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  • 51.
    Abbas, Maisaa
    et al.
    Luleå University of Technology, Department of Health Sciences.
    Andersson, Elisa
    Luleå University of Technology, Department of Health Sciences.
    Personers upplevelser av att överleva ett hjärtstopp - ett litteraturstudie2019Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Hjärtstopp drabbar cirka 10 000 personer årligen i Sverige. Antalet personer som överlever ett hjärtstopp har ökat stadigt de sista åren, men fortfarande är det den vanligaste orsaken till plötslig död utanför sjukhus. För de personen som överlever innebär det att livet plötsligt förändras och fokus i det dagliga livet blir på händelsen och dess konsekvenser. Syftet med denna litteraturstudie var att beskriva de drabbades upplevelser av ett hjärtstopp. En kvalitativ design användes och nio vetenskapliga studier analyserades systematiskt med innehållsanalys. Analysen resulterade i fem kategorier: Att känna oro, att få ett nytt livsperspektiv, att kroppsliga begränsningar leder till känslor av rädsla och maktlöshet, att känna tacksamhet men vara i behov av stödsamtal, att vara i behov av information. Resultatet visade att personer som överlevt ett hjärtstopp hade många frågor och funderingar kring det inträffade men upplevde att de fick bristande information från sjukvården. Känslor som otrygghet, ångest och osäkerhet var vanligt samt oro inför framtiden. Resultatet från denna litteraturstudie kan användas för att öka kunskapen om hur personerna mår psykiskt och fysiskt, samt vilka behov de har för att hantera livet. Det behövs mer omvårdnadsforskning inom området med fokus på sjuksköterskors upplevelser av att vårda de drabbade personerna. Målet är att skapa trygghet hos sjukvårdspersonal så att de kan stötta dessa personer på bästa sätt och främja en läkning hos dem och anhöriga.

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  • 52.
    Abbas, Nahla
    et al.
    School of Engineering & Technology, Central Queensland University, Melbourne, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Wasimi, Saleh
    School of Engineering & Technology, Central Queensland University, Melbourne, Australia.
    Al-Rawabdeh, Abdulla M.
    Department of Earth and Environmental Science, Yarmouk University, Irbid, Jordan.
    Flow Variation of the Major Tributaries of Tigris River Due to Climate Change2019In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 11, no 8, p. 437-442Article in journal (Refereed)
    Abstract [en]

    Iraq relies greatly  on  the  flow of  the  Euphrates  and  Tigris Rivers  and  their tributaries. Five tributaries namely Khabour, Greater Zab, Lesser Zab, AlAd- hiam  and  Daylia,  which  are  the  major  tributaries  of  Tigris  River,  sustain Northern  Iraq  Region,  a  semi-arid,  mainly  a  pastureland.  These  tributaries contribute about 24 km3  of water annually. The discharge in the tributaries, in recent  times,  has  been  suffering  increasing  variability  contributing  to  more severe droughts and floods apparently due to climate change. This is because there were no dams constructed outside Iraq previously. For an appropriate appreciation,  Soil  Water  Assessment Tool  (SWAT)  model  was used  to evaluate  the  impact  of  climate  change  on  their  discharge  for  a  half-centennial lead time to 2046-2064 and a centennial lead time to 2080-2100. The suitability of the model was first evaluated, and then, outputs from six GCMs were incorporated  to  evaluate  the  impacts  of  climate  change  on  water  resources under three emission scenarios: A1B, A2 and B1. The results showed that wa-ter resources are expected to decrease with time.

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  • 53.
    Abbas, Nahla
    et al.
    School of Engineering and Technology, Central Queensland University, Melbourne .
    Wasimi, Saleh A.
    School of Engineering and Technology, Central Queensland University, Melbourne .
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Climate Change Impacts on Water Resources of Greater Zab River, Iraq2016In: Journal of Civil Engineering and Architecture, ISSN 1934-7359, E-ISSN 1934-7367, Vol. 10, no 12, p. 1384-1402Article in journal (Refereed)
    Abstract [en]

    Greater Zab is the largest tributary of the Tigris River in Iraq where the catchment area is currently being plagued by water scarcity and pollution problems. Contemporary studies have revealed that blue and green waters of the basin have been manifesting increasing variability contributing to more severe droughts and floods apparently due to climate change. In order to gain greater appreciation of the impacts of climate change on water resources in the study area in near and distant future, SWAT (Soil and Water Assessment Tool) has been used. The model is first tested for its suitability in capturing the basin characteristics, and then, orecasts from six GCMs (general circulation models) with about half-a-century lead time to 2046~2064 and one-century lead time to 2080~2100 are incorporated to evaluate the impacts of climate change on water resources under three emission scenarios: A1B, A2 and B1. The results showed worsening water resources regime into the future.

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    Climate Change Impacts on Water Resources of Greater
  • 54.
    Abbas, Nahla
    et al.
    School of Engineering and Technology, Central Queensland University, Australia.
    Wasimi, Saleh A.
    School of Engineering and Technology, Central Queensland University, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
    Impacts of Climate Change on Water Resources in Diyala River Basin, Iraq2016In: Journal of Civil Engineering and Architecture, ISSN 1934-7359, E-ISSN 1934-7367, Vol. 10, no 9, p. 1059-1074Article in journal (Refereed)
    Abstract [en]

    Diyala River is the third largest tributary of the Tigris River running 445 km length and draining an area of 32,600 km2. The river is the major source of water supply for Diyala City for municipal, domestic, agriculture and other purposes. Diyala River Basin currently is suffering from water scarcity and contamination problems. Up-to-date studies have shown that blue and green waters of a basin have been demonstrating increasing variability contributing to more severe droughts and floods seemingly due to climate change. To obtain better understanding of the impacts of climate change on water resources in Diyala River Basin in near 2046~2064 and distant future 2080~2100, SWAT (soil and water assessment tool) was used. The model is first examined for its capability of capturing the basin characteristics, and then, projections from six GCMs (general circulation models) are incorporated  to assess the impacts of climate change on water resources under three emission scenarios: A2, A1B and B1. The results showed deteriorating water resources regime into the future.

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  • 55.
    Abbas, Nahla
    et al.
    School of Engineering & Technology, Central Queensland University, Melbourne.
    Wasimi, Saleh A.
    School of Engineering & Technology, Central Queensland University, Melbourne.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Model-Based Assessment of Climate Change Impact on Isaac River Catchment, Queensland2016In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 8, no 7, p. 460-470Article in journal (Refereed)
    Abstract [en]

    Isaac River catchment, which is located within Fitzroy basin in Central Queensland, Australia is mostly a semi-arid region, sparsely populated, but rife with economic activities such as mining, grazing, cropping and production forestry. Hydro-meteorological data over the past several decades reveal that the catchment is experiencing increasing variability in precipitation and streamflow contributing to more severe droughts and floods supposedly due to climate change. The exposure of the economic activities in the catchment to the vagaries of nature and the possible impacts of climate change on the stream flow regime are to be analyzed. For the purpose, SWAT model was adopted to capture the dynamics of the catchment. During calibration of the model 12parameters were found to be significant which yielded a R2 value of 0.73 for calibration and 0.66 for validation. In the next stage, six GCMs from CMIP3 namely, CGCM3.1/T47, CNRM-CM3, GFDLCM2.1, IPSLCM4, MIROC3.2 (medres) and MRI CGCM2.3.2 were selected for climate change projections in the Fitzroy basin under a very high emissions scenario (A2), a medium emissions scenario(A1B) and a low emissions scenario (B1) for two future periods (2046-2064) and (2080-2100). All GCMs showed consistent increases in temperature, and as expected, highest rate for A2 and lowest rate for B1. Precipitation predictions were mixed-reductions in A2 and increases in A1B and B1, and more variations in distant future compared to near future. When the projected temperaturesand precipitation were inputted into the SWAT model, and the model outputs were compared with the baseline period (1980-2010), the picture that emerged depicted worsening water resources variability.

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  • 56.
    Abbas, Nahla
    et al.
    School of Engineering and Technology, Central Queensland University, Melbourne.
    Wasimi, Saleh A.
    School of Engineering and Technology, Central Queensland University, Melbourne.
    Bhattarai, Surya
    School of Medical and Applied Sciences, Centra l Queensland University, Melbourne .
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    The Impacts of Climate Change on Fitzroy River Basin, Queensland, Australia2017In: Journal of Civil Engineering and Architecture, ISSN 1934-7359, E-ISSN 1934-7367, Vol. 11, no 1, p. 38-47Article in journal (Refereed)
    Abstract [en]

    An analysis of historical data of Fitzroy River, which lies in the east coast of Australia, reveals that there is an increasing trend in extreme floods and droughts apparently attributable to increased variability of blue and green waters which could be due to climate change. In order to get a better understanding of the impacts of climate change on the water resources of the study area for near future as well as distant future, SWAT (soil and water assessment tool) model was applied. The model is first tested for its suitability in capturing the basin characteristics with available data, and then, forecasts from six GCMs (general circulation model) with about half-a-century lead time to 2046~2064 and about one-century lead time to 2080~2100 are incorporated to evaluate the impacts of climate change under three marker emission scenarios: A2, A1B and B1. The results showed worsening water resources regime into the future.

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  • 57.
    Abbas, Nahla
    et al.
    School of Engineering & Technology, Central Queensland University, Melbourne, Australia.
    Wasimi, Saleh
    School of Engineering & Technology, Central Queensland University, Melbourne, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Sultana, Nasrin
    RMIT University, Melbourne, Australia.
    Water resources problems of Iraq: Climate change adaptation and mitigation2018In: Journal of Environmental Hydrology, ISSN 1058-3912, E-ISSN 1996-7918, Vol. 26, article id 6Article in journal (Refereed)
    Abstract [en]

    Iraq is suffering from water scarcity, and future predictions indicate that it could get worse due to changing climate. Arguably, climate change is one of the greatest challenges onfronting this region it could have significant adverse effects on water resources and hence the environment and economy, particularly in the agricultural sector. This study considers possible adaptation and mitigation measures that could be undertaken in response to climate change. To overcome this problem,adaptation measures at farm and government level were conferred. Farm-level adaptation comprises adopting crop modification, soil conservation, irrigation, changing crop calendar and planting of trees. The government role is to ensure success of these adaptation measures. The government should get involved and support the farmers financially and technologically.

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  • 58.
    Abbas, Nahlah
    et al.
    Central Queensland University, Melbourne, Australia.
    Nasrin, Sultana
    RMIT, Melbourne, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Ali, Sabah H.
    Remote Sensing Center, University of Mosul, Mosul, Iraq.
    The Impacts of Sea Level Rise on Basrah City,Iraq: The Impacts of Sea Level Rise on Basrah City,Iraq2020In: Open Journal of Geology, ISSN 2161-7570, E-ISSN 2161-7589, Open Journal of Geology, ISSN 2161-7570, Vol. 10, no 12, p. 1189-1197Article in journal (Refereed)
    Abstract [en]

    Sea Level Rise (SLR) above the Mean Sea Level (MSL) is more likely to cause a significant risk to the coastal regions. This research explores the potential impact of sea level rise, due to climate change, on coastal areas. It examines the impact of sea level rise on Basrah city and adjacent cities in Iraq. A digital elevation model (DEM) was used to create a model of Potentially Inundated Areas, manipulated and processed in Geographical Information System version 10.7 (ArcGIS 10.7). Through this model, the impact of sea level rise was assessed on the surface area. After the susceptible areas were delineated, it was estimated that at worst case scenario of 5 m sea level rise will impact Basrah city by losing 38 percent of its total surface area.

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  • 59.
    Abbas, Nahlah
    et al.
    The school of engineering & technology, Central Queensland University, Melbourne, Australia.
    Wasimi, Saleh A.
    The school of engineering & technology, Central Queensland University, Melbourne, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Impacts of Climate Change on Water Resources of Greater Zab and Lesser Zab Basins, Iraq, Using Soil and Water Assessment Tool Model2017In: International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering, ISSN 2010-376X, Vol. 11, no 10, p. 823-829Article in journal (Refereed)
    Abstract [en]

    The Greater Zab and Lesser Zab are the major tributaries of Tigris River contributing the largest flow volumes into the river. The impacts of climate change on water resources in these basins have not been well addressed. To gain a better understanding of the effects of climate change on water resources of the study area in near future (2049-2069) as well as in distant future (2080-2099), Soil and Water Assessment Tool (SWAT) was applied. The model was first calibrated for the period from 1979 to 2004 to test its suitability in describing the hydrological processes in the basins. The SWAT model showed a good performance in simulating streamflow. The calibrated model was then used to evaluate the impacts of climate change on water resources. Six general circulation models (GCMs) from phase five of the Coupled Model Intercomparison Project (CMIP5) under three Representative Concentration Pathways (RCPs) RCP 2.6, RCP 4.5, and RCP 8.5 for periods of 2049-2069 and 2080-2099 were used to project the climate change impacts on these basins. The results demonstrated a significant decline in water resources availability in the future.

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  • 60.
    Abbas, Nahlah
    et al.
    School of Engineering & Technology, Central Queensland University, Melbourne, VIC 3000, Australia.
    Wasimi, Saleh A.
    School of Engineering & Technology, Central Queensland University, Melbourne, VIC 3000, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Baby, Sultana Nasrin
    Department of Geospatial Sciences, RMIT University, Melbourne, VIC 3000, Australia.
    Recent Trends and Long-Range Forecasts of Water Resources of Northeast Iraq and Climate Change Adaptation Measures2018In: Water, E-ISSN 2073-4441, Vol. 10, no 11, p. 1-19, article id 1562Article in journal (Refereed)
    Abstract [en]

    Iraq has been experiencing water resources scarcity, and is vulnerable to climate change. Analysis of historical data revealed that the region is experiencing climate change to a degree higher than generally reported elsewhere. The relationship between climate change and its effect on water resources of a region has been sparsely addressed in published literature. To fill that gap this research work first investigates if there has been a significant change in climate in the region, which has been found to be true. In the next stage, the research projects future climatic scenarios of the region based on six oft-used General CirculationModel (GCM) ensembles, namely CCSM4, CSIRO-Mk3.6.0, GFDL-ESM2M, MEROC5, HadGEM2-ES, and IPSL-CM5A-LR. The relationship between climate change and its impact on water resources is explored through the application of the popular, widely used SWAT model. The model depicts the availability of water resources, classified separately as blue and green waters, for near and distant futures for the region. Some of the findings are foreboding and warrants urgent attention of planners and decision makers. According to model outputs, the region may experience precipitation reduction of about 12.6% and 21% in near (2049–2069) and distant (2080–2099) futures, respectively under RCP8.5. Those figures under RCP4.5 are 15% and 23.4%, respectively and under RCP2.6 are 12.2% and 18.4%, respectively. As a consequence, the blue water may experience decreases of about 22.6% and 40% under RCP8.5, 25.8% and 46% under RCP4.5, and 34.4% and 31% under RCP2.6 during the periods 2049–2069 and 2080–2099, respectively. Green water, by contrast, may reduce by about 10.6% and 19.6% under RCP8.5, by about 14.8% and 19.4% under RCP4.5, and by about 15.8% and 14.2% under RCP2.6 during the periods 2049–2069 and 2080–2099, respectively. The research further investigates how the population are adapting to already changed climates and how they are expected to cope in the future when the shift in climate is expected to be much greater.

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  • 61.
    Abbas, Nahlah
    et al.
    School of Engineering & Technology, Central Queensland University, Melbourne, Australia.
    Wasimia, Saleh A.
    School of Engineering & Technology, Central Queensland University, Melbourne, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Assessment of Climate Change Impact on Water Resources of Lesser Zab, Kurdistan, Iraq Using SWAT Model2016In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 8, p. 697-715Article in journal (Refereed)
    Abstract [en]

    Kurdistan in northern Iraq, a semi-arid region, predominantly a pastureland, is nourished by Lesser Zab, which is the second major tributary of Tigris River. The discharge in the tributary, in recent times, has been experiencing increasing variability contributing to more severe droughts and floods supposedly due to climate change. For a proper appreciation, SWAT model has been used to assess the impact of climate change on its hydrological components for a half-centennial lead time to 2046-2064 and a centennial lead time to 2080-2100. The suitability of the model was first evaluated, and then, outputs from six GCMs were incorporated to evaluate the impacts of climate change on water resources under three emission scenarios: A1B, A2 and B1. The results showed worsening water resources regime.

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    fulltext
  • 62.
    Abbas, Nahlah
    et al.
    School of Engineering & Techno logy, Central Queensland Univ ersity, Melbourne, Australia .
    Wasimia, Saleh A.
    School of Engineering & Techno logy, Central Queensland Univ ersity, Melbourne, Australia .
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Assessment of Climate Change Impacts on Water Resources of Al-Adhaim, Iraq Using SWAT Model2016In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 8, p. 716-732Article in journal (Refereed)
    Abstract [en]

    SWAT model (Sediment and Water Assessment Tool) was used to evaluate the impacts of climate change on water resources in Al-Adhaim Basin which is located in north east of Iraq. Al-Adhaim River is the main source of fresh water to Kirkuk City, one of the largest cities of Iraq. Recent studies have shown that blue and green waters of the basin have been manifesting increasing variability contributing to more severe droughts and floods apparently due to climate change. In order to gain greater appreciation of the impacts of climate change on water resources in the study area in near and distant future, SWAT (Soil and Water Assessment Tool) has been used. The model is first tested for its suitability in capturing the basin characteristics, and then, forecasts from six GCMs with about half-a-century lead time to 2046-2064 and one-century lead time to 2080-2100 are incorporated to evaluate the impacts of climate change on water resources under three emission scenarios: A2, A1B and B1. The results showed worsening water resources regime into the future.

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  • 63.
    Abbas, Nahlah
    et al.
    School of Engineering & Technology Central Queensland University, Melbourne, Australia.
    Wasimia, Saleh A.
    School of Engineering & Technology Central Queensland University, Melbourne, Australia.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Assessment of climate change impacts on water resources of Khabour in Kurdistan , Iraq using SWAT model2016In: Journal of Environmental Hydrology, ISSN 1058-3912, E-ISSN 1996-7918, Vol. 24, p. 1-21, article id 10Article in journal (Refereed)
    Abstract [en]

    The Khabour River is one of five tributaries of Tigris River and the first river flows into Tigris River contributing to Tigris Flow by about 2 BCM at Zakho Station. The area of this catchment is 6,143 km2, of which 57% are located in Turkey and 43% in Iraq with a total length of 181 km. Khabour River is the main source of fresh water to Duhok City, one of the major cities of Kurdistan Region. Hydrometeorological data over the past several decades reveal that the catchment is experiencing increasing variability in precipitation and stream flow contributing to more severe droughts and floods presumably due to climate change. SWAT model was applied to capture the dynamics of the basin. The model was calibrated at Zakho station. The performance of the model was rather satisfactory; R2 and ENC were 0.5 and 0.51, respectively in calibration period. In validation process R2 and ENC were nearly consistent. In the next stage, six GCMs from CMIP3 namely, CGCM3.1/T47, CNRM-CM3, GFDL-CM2.1, IPSLCM4, MIROC3.2 (medres) and MRI CGCM2.3.2 were selected for climate change projections in the basin under a very high emissions scenario (A2), a medium emissions scenario (A1B) and a low emissions scenario (B1) for two future periods (2046-2064) and (2080-2100). All GCMs showed consistent increases in temperature and decreases in precipitation, and as expected, highest rate for A2 and lowest rate for B1. The projected temperatures and precipitation were input to the SWAT model to project water resources, and the model outputs were compared with the baseline period (1980-2010), the picture that emerged depicted deteriorating water resources variability.

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    Khabour
  • 64.
    Abbas, Syed Adeel
    et al.
    Center for High Energy Physics, University of the Punjab, Quaid-e-Azam Campus, 54590 Lahore, Pakistan.
    Mahmood, I.
    Center for High Energy Physics, University of the Punjab, Quaid-e-Azam Campus, 54590 Lahore, Pakistan.
    Sajjad, Muhammad
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
    Noor, N.A.
    Department of Physics, RIPHAH International University, Campus Lahore, Pakistan.
    Mahmood, Q.
    Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P O Box 1982, 31441 Dammam, Saudi Arabia.
    Naeem, M.A.
    Chemical Engineering Department, University of the Punjab, Lahore 54000, Pakistan.
    Mahmood, Asif
    College of Engineering Chemical Engineering Department King Saud University Riyadh, Saudi Arabia.
    Ramay, Shahid M.
    Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
    Spinel-type Na2MoO4 and Na2WO4 as promising optoelectronic materials: First-principle DFT calculations2020In: Chemical Physics, ISSN 0301-0104, E-ISSN 1873-4421, Vol. 538, article id 110902Article in journal (Refereed)
    Abstract [en]

    The mechanical, thermodynamic, electronic, and optical properties of Na2MoO4 (NMO) and Na2WO4 (NWO) spinels are elaborated by density functional theory (DFT) based full potential augmented plane wave method (FP-LAPW + lo). Our optimized lattice constants for the studied spinels are in good agreement with that obtained experimentally. The enthalpy of formation ensures the thermodynamic stability of NMO and NWO in the cubic phase. The Born mechanical stability criteria guarantees their mechanical stability, while Poisson ratio (ν) and Pugh's ratio (B/G) infer their brittle behavior. The Debye temperature (θD) is significant for NMO than NWO. The wide bandgap of 3.5 eV for NMO and 4.4 eV for NWO show the maximum absorption in the ultraviolet region that increases their importance for optoelectronic applications. The optical properties are explained in term of dielectric constant, refractive index, absorption of light, reflection, and optical loss factor.

  • 65.
    Abbas, Zainab Dekan
    et al.
    Environmental Department, Urban Planning College, Kufa University, Iraq.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Jassim, Osama
    Environmental Department, Urban Planning College, Kufa University, Iraq.
    Locating Dam Sites For Water Harvesting: Case Study Of Najaf Province, Iraq2019In: Journal of Environmental Hydrology, ISSN 1058-3912, E-ISSN 1996-7918, Journal of Environmental Hydrology, ISSN 1058-3912, Vol. 27, p. 1-8, article id 10Article in journal (Refereed)
    Abstract [en]

    The Middle East is considered as an arid area. Iraq was an exception due to the presence of the Tigris  and  Euphrates  Rivers. After  1970,  the  flow  of  these  rivers  started  to  decrease  due  to  climate change  and  building  of  dams  in  the  upper  parts  of  the  catchments  of  the  rivers.  Now,  Iraq  is experiencing  water  shortage  problems.  Rain  water  harvesting  will  definitely  minimize  the  effect  of water shortage problems. In this research an arid area was selected (al Najaf) to find out the best sites for water harvesting using GIS techniques. The good agreement between the results from a simple GIS model  and  observations  in  cases  such  as  al  Najaf  Sea  is  indicating  a  promising  future  for  GIS application  in  hydrological  modeling.  The  present  study  proposed  a  function  formula  of  estimating suitable dam site using existing geographic information map such as the digital elevation maps. It is expected that it will save time, cost and work force. Finally, through the contour map of the study area, the lowest three elevation values at the governorate level were observed (20, 40, 60m). Based on these values, three possibilities were suggested to select the dam sites.

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  • 66.
    Abbasi, Hamon
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    Velayat park: En plats för gränsöverskridande möten mellan människor med olika socioekonomisk status2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Tehran, the capital of Iran has undergone major urbanization in the last century, which has caused uncontrollable urban growth. Poor regulation and control of this growth has given rise to environmental problems including high air and water pollution. In turn, this has led to urban growth towards the mountains in the north, where the environment is better. However, this pressure to develop in the north has increased segregation of the city and created a clear social division of class between the northern and southern parts of the City.

    In light of this, and in the context of Tehran as an extremely dense city with limited green space, the City sees a possibility in transforming an unused military airport in the southern districts of the city into a new urban park.

    This master thesis explores how to reclaim the 270Ha former airfield and develop it as an urban park with strengthened links to surrounding neighbourhoods.

    The work aims to gain an understanding of how large vacant areas can become successful public areas and green places in the community. The work is based on urban theory and site analysis and brings forward design proposals for the park.

    Analysis work is divided into an investigative and exploratory stage. The investigative part includes literature studies, data collection and mapping of the city’s urban morphological development, taking into account physical and socio-economic processes. The exploratory part consisted of inventories, site studies and interviews in Tehran, as well as integration analysis with space syntax to explore accessibility and connections in the new park.

    Throughout the study shows how and why the city has evolved and highlights a connection between living in the southern districts, which are low-income areas, with also having poor access to public and recreation areas.

    This analysis forms the foundations for the design proposal, visualizations and programs presented about how the area can be designed as a new urban city park.

    In conclusion, the study highlights that in order to be able to develop new places or renew existing area’s, consideration must be given to urban morphological development. This includes the socio-economic and socio-ecological process. It further concludes, that a ecological viewpoint together with a understanding of the physical environment, the urban landscape identity and the need of people in the context needs to be brought together to plan and create parks and urban spaces

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  • 67.
    Abbasi, Jasim
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
    Predictive Maintenance in Industrial Machinery using Machine Learning2021Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: The gearbox and machinery faults prediction are expensive both in terms of repair and loss output in production. These losses or faults may lead to complete machinery or plant breakdown. 

    Objective: The goal of this study was to apply advanced machine learning techniques to avoid these losses and faults and replace them with predictive maintenance. To identify and predict the faults in industrial machinery using Machine Learning (ML)  and Deep Learning (DL) approaches. 

    Methods: Our study was based on two types of datasets which includes gearbox and rotatory machinery dataset. These datasets were analyzed to predict the faults using machine learning and deep neural network models. The performance of the model was evaluated for both the datasets with binary and multi-classification problems using the different machine learning models and their statistics.

    Results: In the case of the gearbox fault dataset with a binary classification problem, we observed random forest and deep neural network models performed equally well, with the highest F1-score and AUC score of around 0.98 and with the least error rate of 7%.  In addition to this, in the case of the multi-classification rotatory machinery fault prediction dataset, the random forest model outperformed the deep neural network model with an AUC score of 0.98. 

    Conclusions: In conclusion classification efficiency of the Machine Learning (ML) and Deep Neural Network (DNN) model were tested and evaluated. Our results show Random Forest (RF) and Deep Neural Network (DNN) models have better fault prediction ability to identify the different types of rotatory machinery and gearbox faults as compared to the decision tree and AdaBoost. 

    Keywords: Machine Learning, Deep Learning, Big Data, Predictive Maintenance, Rotatory Machinery Fault Prediction, Gearbox Fault Prediction, Machinery Fault Database, Internet of Things (IoT), Spectra quest machinery fault simulator, Cloud Computing, Industry 4.0

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  • 68.
    Abbott, Daniel
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    The architectural design of Swedish live-work premises: A case study on live-work premises and its potential2021Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The pandemic has forced many to work from home and to mix the work environment with the residential environment. The question is if this works? A new concept, based on an old, is live-work premises or as they are called in Sweden bokaler. Bokaler is a concept where the residence is integrated and coexist with work. Bokaler as a concept is not limited to home offices and can involve more traditional work such as service work. A year with this new work environment has made people more aware of the benefits. Many would like to keep being able to work from home after the pandemic, but there has also been reports of concerns regarding how good the home-work environment is. With this new trend, this report will explore the design choices that should be considered when designing a desirable work and residential environment, or in other words desirable bokal premises.

    This study also hypothesises that live-work premises can benefit vision of safer and more attractive cities. As safety and attractiveness is often associated with the “mixed city,” a term used by architects and municipality staff alike. The possibility to establish bokaler as a concept in Sweden will also be explored.

    The research is based upon a casestudy research method, where the empiric data comes from surveys (users of existing bokaler), interviews with architects and urban planners, and even how existing theories about creating desirable environments can becompared with existing bokaler in Sweden. The research will benefit a design method that will use the data as arguments for design choices. The study uses this method to see if the desired qualities can be replicated.

    The research managed to interview ten owners of bokaler, five architects and study six different variations ofthe bokal typology. The result showed that it is often difficult to include allthe desired functions from a work or residential environment. Since bokaler often are placed on the bottom floor many users experience discomfort from being exposed to the city. Architects also points out that there are legislative issues that prevents the concept to thrive fully, they also point out that there could also be cultural and societal limitations to the concept. For instance, workspaces and residences are taxed differently from each other, so that a mix of those functions becomes difficult to assess what law should be abided. The Swedish society also benefits larger companies compared to sole proprietorships, which are oftenthe users of bokal premises. To establish small businesses in a residential area, to achieve a mix of functions would implicate huge risks for thoseowners.

    The resulting considerations to designa bokal, came down to three things, for it to thrive in Swedish society. These three considerations were also replicated in a design proposal for asite in Luleå.Functions (residential and work functions) should preferably not mix inside the premise. This is because separations lead to less conflict and can even be able to create a more pleasant environment. The bokal should be flexible in its use of rooms and spaces so that it can adapt to changes and multiple functions. The bokal premise relation to the city is also important. The placement in the city and the density of people is important for it to thrive, but also for those who live in the premise to prosper the organisation of rooms and functions should be reflected upon.That the bokal can benefit an attractive society is difficult to assess before seeing the concept itself thriving inthe Swedish society. The possibility to achieve social control exist in theory but is something that should be researched more thoroughly.

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  • 69.
    Abbu, Muthanna
    et al.
    Building and Construction Engineering Deptartment, Northern Technical University, Mosul, Iraq.
    Al-Ataar, Alyaa A.
    Building and Construction Engineering Deptartment, Northern Technical University, Mosul, Iraq.
    Abd Alrahman, Saad
    Building and Construction Engineering Deptartment, Northern Technical University, Mosul, Iraq.
    Al-Gburi, Majid
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    The mechanical properties of lightweight (volcanic pumice) concrete containing fibers with exposure to high temperatures2023In: Journal of the Mechanical Behavior of Materials, ISSN 2191-0243, Vol. 32, no 1, article id 20220249Article in journal (Refereed)
    Abstract [en]

    Fires are considered one of the main risks leading to building collapse. Lightweight concrete comprises a variety of components, each of which has a distinct behavior under the effect of temperature change. A total of sixteen concrete mixtures were investigated in this paper. A reference mix of concrete comprising simply ordinary Portland cement and ten mixes having varying percentages of fine and coarse lightweight aggregates (pumice), which were replaced gravel and sand by fine pumice and coarse aggregates pumice by 20%, 40%, 60%, 80%, and 100%, respectively. In addition, the study focused on the effects of adding fibers to lightweight aggregate concrete mixtures. Polypropylene fibers, carbon fibers, and steel fibers were employed as fiber additions. The binary mixture had higher density than the remaining mixtures containing one substitute. The behavior of six concrete mixes in addition to the reference mix of ordinary concrete after exposure to temperatures 100, 250, 350 and 450 °C for two hours and then cooled in two ways (water and air) as well as examined directly and the results showed that the concrete mixes containing fiber better behavior compared to other mixtures, especially at high temperature. If left to cool in the air, the lightweight concrete containing Volcanic Pumice can recover its compression strength after being exposed to high temperatures.

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  • 70.
    Abd El‑Hameed, Mona M.
    et al.
    Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
    Abuarab, Mohamed E.
    Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Abdel Mottaleb, Shady
    Agricultural Botany Department - Plant Physiology Division, Faculty of Agriculture, Cairo University, Cairo, Egypt.
    Bakeer, Gomaa A.
    Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
    Gyasi‑Agyei, Yeboah
    School of Engineering and Built Environment, Griffith University, Nathan, QLD, 4111, Australia.
    Mokhtar, Ali
    Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
    Phycoremediation of contaminated water by cadmium (Cd) using two cyanobacterial strains (Trichormus variabilis and Nostoc muscorum)2021In: Environmental Sciences Europe, ISSN 2190-4707, E-ISSN 2190-4715, Vol. 33, no 1, article id 135Article in journal (Refereed)
    Abstract [en]

    Background

    Water pollution with heavy metals is a severe dilemma that concerns the whole world related to its risk to natural ecosystems and human health. The main objective was to evaluate the removal efficiency of Cd of various concentrations from contaminated aqueous solution by use of two cyanobacterial strains (Nostoc muscorum and Trichormus variabilis). For this purpose, a specially designed laboratory pilot-scale experiment was conducted using these two cyanobacterial strains on four different initial concentrations of Cd (0, 0.5, 1.0 and 2.0 mg L−1) for 21 days.

    Results

    N. muscorum was more efficient than T. variabilis for removing Cd (II), with the optimum value of residual Cd of 0.033 mg L−1 achieved by N. muscorum after 21 days with initial concentration of 0.5 mg L−1, translating to removal efficiency of 93.4%, while the residual Cd (II) achieved by T. variabilis under the same conditions was 0.054 mg L−1 (89.13% removal efficiency). Algal growth parameters and photosynthetic pigments were estimated for both cyanobacterial strains throughout the incubation period.

    Conclusions

    High Cd concentration had a more toxic impact on algal growth. The outcomes of this study will help to produce treated water that could be reused in agrarian activities.

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  • 71. Abdali, Haidar
    Fukthaltsmätning i råbentonit2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The project is about a meter called Water Content Monitor WCM411. It is a moisture meter used in this assignment to measure the actual moisture content of raw bentonite. It is made in Finland with a quite new technology. It is based on infrared measurement technology and is completely non-contact. The purpose of this project is to measure the moisture content of raw bentonite in a reliable manner so that the new plant to be built in Sandskär can control the temperature and amount of drying air to the bentonite. The equipment needs to be calibrated before its initial use. Three methods can be used to calibrate the equipment so that it can measure the actual moisture content of the crude bentonite. The first method is based on taking a sample and determine calibration factor. The second method is based on guessing a value `Learning by doing''. The third method is based on doing mathematical calculations to find calibration. At the end the master's student reviews the key elements that have been discovered which allows one to start up the equipment in a reliable manner. You can read about the instances that can be helpful to know before taking equipment into use. Through discussion, you can see which questions concerning equipment work that the master's student has taken up and which measures student has suggested. Finally, summarizing the student has the conclusions that can be made after this work

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  • 72. Abdel Aziz, Adam
    et al.
    Abdel, Karim
    Methods for ergonomics assessment of agricultural work with hand tools2001Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The objective of the study was to develop methods for ergonomics assessment of agricultural work with hand tools in the laboratory and thereafter adapted in the field. A total of eight male graduate students (mean age, height and weight were 29.4 years, 176.8 cm and 81.0 kg respectively) participated in a digging task using a hand hoe. The digging task was performed within three minutes in a 2 m * 1.5 m metal box full of moist sand. 3 video cameras were installed to record the working posture. At the last minute, during interval of 15 seconds, heart rates (HR) along with rate of perceived exertion (RPE) 6-20 were measured to assess the physical load. Awkward postures while the hoe lifted up as well as stroke the soil were frozen and different joint angles were measured to provide input for 3- dimesional static strength prediction programme (3D SSPP). The data analyses included linear regression for HR as a function of RPE: 3D SSPP software calculated the percentage of population capable of performing the task and low-back compressive forces. Compression force on L5/S1 was plotted as a function of HR and RPE. The results revealed that the correlation coefficient (r) for HR and RPE (p<0.05) was 0.59: the measured and perceived physical load range from light to heavy. the output obtained from the software showed that low-back compressive forces were below the niosh recommended safe limit (3400 n) when the hoe lifted up. however, when the hoe stroke the soil, compression force on l5/s1 for 25% from the subjects exceeded the niosh safe limit and therefore they were at high risk of back injury. when the force on l5/s1 plotted as a function of hr and rpe, the results showed that there was no linear relationship between these variables. in conclusion, hr a long with rpe proved to be used in the laboratory as well as in the field. 3d sspp could be used in the laboratory, nevertheless, in the field, one video camera would be appropriate.

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  • 73.
    Abdelaziz, Ahmed
    et al.
    Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur.
    Ang, Tanfong
    Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur.
    Sookhak, Mehdi
    Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur.
    Khan, Suleman
    Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur.
    Vasilakos, Athanasios
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Liew, Cheesun
    Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur.
    Akhunzada, Adnan
    Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur.
    Survey on network virtualization using openflow: Taxonomy, opportunities, and open issues2016In: KSII Transactions on Internet and Information Systems, ISSN 1976-7277, Vol. 10, no 10, p. 4902-4932Article in journal (Refereed)
    Abstract [en]

    The popularity of network virtualization has recently regained considerable momentum because of the emergence of OpenFlow technology. It is essentially decouples a data plane from a control plane and promotes hardware programmability. Subsequently, OpenFlow facilitates the implementation of network virtualization. This study aims to provide an overview of different approaches to create a virtual network using OpenFlow technology. The paper also presents the OpenFlow components to compare conventional network architecture with OpenFlow network architecture, particularly in terms of the virtualization. A thematic OpenFlow network virtualization taxonomy is devised to categorize network virtualization approaches. Several testbeds that support OpenFlow network virtualization are discussed with case studies to show the capabilities of OpenFlow virtualization. Moreover, the advantages of popular OpenFlow controllers that are designed to enhance network virtualization is compared and analyzed. Finally, we present key research challenges that mainly focus on security, scalability, reliability, isolation, and monitoring in the OpenFlow virtual environment. Numerous potential directions to tackle the problems related to OpenFlow network virtualization are likewise discussed

  • 74.
    Abdeldjouad, Lokmane
    et al.
    EVRNZA Laboratory, University of Ouargla, Ouargla, Algeria; Department of Civil and Hydraulic Engineering, Faculty of Applied Sciences, University of Ouargla, Ouargla, Algeria.
    Dheyab, Wisam
    Department of Civil Engineering, College of Engineering, Tikrit University, Tikrit, Iraq.
    Gamil, Yaser
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Department of Civil Engineering, School of Engineering, Monash University Malaysia, Selangor, Malaysia.
    Asadi, Afshin
    EnvoGéotechnique Ltd, Auckland, New Zealand.
    Shukla, Sanjay Kumar
    Geotechnical and Geoenvironmental Engineering Research Group, School of Engineering, Edith Cowan University, Joondalup, Perth, WA 6027, Australia.
    Thermal curing effects on alkali-activated treated soils with palm oil fuel ash2023In: Case Studies in Construction Materials, E-ISSN 2214-5095, Vol. 19, article id e02455Article in journal (Refereed)
    Abstract [en]

    Regarding the significance of binder quantity, alkali activator molarities, and thermal curing, this work was utilized to geopolymerize with a potassium-based alkaline activator to strengthen soils. Five different molarities of palm oil fuel ash (POFA) in four different amounts were utilized to activate the clayey soil. POFA admixtures have been used to test soils. The results showed that for mixtures with 10 and 12.5 molarities, the unconfined compressive strength (UCS) with 15 % and 20 % of POFA was stronger. Comparing the strengths of the blends with various POFA amounts and concentration molarities allowed for this determination. To increase the strength, it is crucial to consider how the geopolymerization method&apos;s temperature and curing time affect the UCS of the soil-POFA mixture with and without fibers. The UCS of the treated soil mixtures was changed by heating at 30, 50, 70, and 90 degrees C. The outcomes demonstrate that increasing the curing temperature will hasten the alkaline activation process. After seven days of heating, the treated soil specimens with and without fibers exhibit the best mechanical properties at a healing temperature of about 70 degrees C, with compressive strengths of 16.7 and 11.4 MPa. The interaction between the geo-polymeric matrix and the fiber surface, the molarities of the alkaline solution, and the heating temperature were the most important aspects, according to an investigation of the microstructures, in improving the behavior of the reinforced mixes. By offering an efficient approach for increasing the qualities of soil treated by the alkali activation of POFA through the inclusion of glass fibers with adequate molarities of reagent and cure heating temperature, the current work offers new insights into soil stabilization operations. This has advantages over conventional calcium-based binders due to their emission of carbon dioxide during manufacture, which is one of the major causes of global warming.

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  • 75.
    Abdel-Hameed, Amal Mohamed
    et al.
    Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
    Abuarab, Mohamed EL-Sayed
    Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
    Al-Ansari, Nadhir
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
    Mehawed, Hazem Sayed
    Irrigation and Drainage Department, Agricultural Engineering Research Institute, Giza 12613, Egypt.
    Kassem, Mohamed Abdelwahab
    Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
    He, Hongming
    School of Geographic Sciences, East China Normal University, Shanghai 210062, China.
    Gyasi-Agyei, Yeboah
    School of Engineering and Built Environment, Griffith University, Nathan, QLD 4111, Australia.
    Mokhtar, Ali
    Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza 12613, Egypt; School of Geographic Sciences, East China Normal University, Shanghai 210062, China.
    Winter Potato Water Footprint Response to Climate Change in Egypt2022In: Atmosphere, ISSN 2073-4433, E-ISSN 2073-4433, Vol. 13, no 7, article id 1052Article in journal (Refereed)
    Abstract [en]

    The limited amount of freshwater is the most important challenge facing Egypt due to increasing population and climate change. The objective of this study was to investigate how climatic change affects the winter potato water footprint at the Nile Delta covering 10 governorates from 1990 to 2016. Winter potato evapotranspiration (ETC) was calculated based on daily climate variables of minimum temperature, maximum temperature, wind speed and relative humidity during the growing season (October–February). The Mann–Kendall test was applied to determine the trend of climatic variables, crop evapotranspiration and water footprint. The results showed that the highest precipitation values were registered in the northwest governorates (Alexandria followed by Kafr El-Sheikh). The potato water footprint decreased from 170 m3 ton−1 in 1990 to 120 m3 ton−1 in 2016. The blue-water footprint contributed more than 75% of the total; the remainder came from the green-water footprint. The findings from this research can help government and policy makers better understand the impact of climate change on potato crop yield and to enhance sustainable water management in Egypt’s major crop-producing regions to alleviate water scarcity.

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  • 76.
    Abdel-Khalek, N.A.
    et al.
    Central Metallurgical Research and Development Institute (CMRDI), Helwan, Cairo.
    Yassin, K.E.
    Central Metallurgical Research and Development Institute (CMRDI), Helwan, Cairo.
    Kota, Hanumantha Rao
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Kandel, A-H
    Chemistry Department, Faculty of Science, Helwan University.
    Effect of starch type on selectivity of cationic flotation of iron ore2012In: Mineral Processing and Extractive Metallurgy: Transactions of the Institutions of Mining and Metallurgy: Section C, ISSN 0371-9553, E-ISSN 1743-2855, Vol. 121, no 2, p. 98-102Article in journal (Refereed)
    Abstract [en]

    Cationic flotation is one of the most widely accepted technologies for upgrading siliceous iron ore using polysaccharides (mainly starches) as depressing agents for iron bearing minerals while floating silica with amines. In this paper, a group of starches are investigated as depressants for haematite. These starches are wheat, corn, rice, potato and dextrin. The role of starch type on the selectivity of the separation process has been studied through zeta potential, adsorption measurements as well as flotation tests. The effects of type of starch and pH of the medium have been studied. The results indicate that the selectivity of the separation process is strongly affected by the type of starch used, where better results are obtained with corn starch or wheat starch in comparison to the other types. Fourier transform infrared spectroscopy measurements indicated that the interaction between starches and haematite surface is intermolecular interaction

  • 77.
    Abd-Ellah, Mahmoud Khaled
    et al.
    Electronics and Communications Department, Al-Madina Higher Institute for Engineering and Technology, Giza, Egypt.
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Digital Services and Systems. Faculty of Engineering, Al-Alzhar University, P.O. Box 83513, Qena, Egypt.
    Hamed, Hesham F. A.
    Department of Telecommunications Eng., Egyptian Russian University, Cairo, Egypt. Department of Communications and Electronics, Faculty of Engineering, Minia University, Minia, Egypt.
    Khalaf, Ashraf A. M.
    Department of Communications and Electronics, Faculty of Engineering, Minia University, Minia, Egypt.
    Parallel Deep CNN Structure for Glioma Detection and Classification via Brain MRI Images2019In: IEEE-ICM 2019 CAIRO-EGYPT: The 31st International Conference on Microelectronics, IEEE, 2019, p. 304-307Conference paper (Other academic)
    Abstract [en]

    Although most brain tumor diagnosis studies have focused on tumor segmentation and localization operations, few studies have focused on tumor detection as a time- and effort-saving process. This study introduces a new network structure for accurate glioma tumor detection and classification using two parallel deep convolutional neural networks (PDCNNs). The proposed structure is designed to identify the presence and absence of a brain tumor in MRI images and classify the type of tumor images as high-grade gliomas (HGGs, i.e., glioblastomas) or low-grade gliomas (LGGs). The introduced PDCNNs structure takes advantage of both global and local features extracted from the two parallel stages. The proposed structure is not only accurate but also efficient, as the convolutional layers are more accurate because they learn spatial features, and they are efficient in the testing phase since they reduce the number of weights, which reduces the memory usage and runtime. Simulation experiments were accomplished using an MRI dataset extracted from the BraTS 2017 database. The obtained results show that the proposed parallel network structure outperforms other detection and classification methods in the literature.

  • 78.
    Abd-Ellah, Mahmoud Khaled
    et al.
    Al-Madina Higher Institute for Engineering and Technology.
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Khalaf, Ashraf A. M.
    Minia University, Egypt.
    Hamed, Hesham F. A.
    Minia University, Egypt.
    Classification of Brain Tumor MRIs Using a Kernel Support Vector Machine2016In: Building Sustainable Health Ecosystems: 6th International Conference on Well-Being in the Information Society, WIS 2016, Tampere, Finland, September 16-18, 2016, Proceedings / [ed] Hongxiu Li, Pirkko Nykänen, Reima Suomi, Nilmini Wickramasinghe, Gunilla Widén, Ming Zhan, Springer International Publishing , 2016, p. 151-160Conference paper (Refereed)
    Abstract [en]

    The use of medical images has been continuously increasing, which makes manual investigations of every image a difficult task. This study focuses on classifying brain magnetic resonance images (MRIs) as normal, where a brain tumor is absent, or as abnormal, where a brain tumor is present. A hybrid intelligent system for automatic brain tumor detection and MRI classification is proposed. This system assists radiologists in interpreting the MRIs, improves the brain tumor diagnostic accuracy, and directs the focus toward the abnormal images only. The proposed computer-aided diagnosis (CAD) system consists of five steps: MRI preprocessing to remove the background noise, image segmentation by combining Otsu binarization and K-means clustering, feature extraction using the discrete wavelet transform (DWT) approach, and dimensionality reduction of the features by applying the principal component analysis (PCA) method. The major features were submitted to a kernel support vector machine (KSVM) for performing the MRI classification. The performance evaluation of the proposed system measured a maximum classification accuracy of 100 % using an available MRIs database. The processing time for all processes was recorded as 1.23 seconds. The obtained results have demonstrated the superiority of the proposed system.

  • 79.
    Abd-Ellah, Mahmoud Khaled
    et al.
    Al-Madina Higher Institute for Engineering and Technology, Giza, Egypt .
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Digital Services and Systems. Faculty of Engineering, Al-Azhar University, Qena, Egypt.
    Khalaf, Ashraf A. M.
    Minia University, Minia, Egypt .
    Hamed, Hesham F. A.
    Egyptian Russian University, Cairo, Egypt. Minia University, Minia, Egypt .
    Deep Convolutional Neural Networks: Foundations and Applications in Medical Imaging2020In: Deep Learning in Computer Vision: Principles and Applications / [ed] Mahmoud Hassaballah, Ali Ismail Awad, CRC Press, 2020, 1st, p. 233-260Chapter in book (Other academic)
  • 80.
    Abd-Ellah, Mahmoud Khaled
    et al.
    Electronic and Communication Department Al-Madina Higher Institute for Engineering and Technology, Giza.
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Khalaf, Ashraf A. M.
    Faculty of Engineering, Minia University.
    Hamed, Hesham F. A.
    Faculty of Engineering, Minia University.
    Design and implementation of a computer-aided diagnosis system for brain tumor classification2017In: 2016 28th International Conference on Microelectronics (ICM), 2017, p. 73-76, article id 7847911Conference paper (Refereed)
    Abstract [en]

    Computer-aided diagnosis (CAD) systems have become very important for the medical diagnosis of brain tumors. The systems improve the diagnostic accuracy and reduce the required time. In this paper, a two-stage CAD system has been developed for automatic detection and classification of brain tumor through magnetic resonance images (MRIs). In the first stage, the system classifies brain tumor MRI into normal and abnormal images. In the second stage, the type of tumor is classified as benign (Noncancerous) or malignant (Cancerous) from the abnormal MRIs. The proposed CAD ensembles the following computational methods: MRI image segmentation by K-means clustering, feature extraction using discrete wavelet transform (DWT), feature reduction by applying principal component analysis (PCA). The two-stage classification has been conducted using a support vector machine (SVM). Performance evaluation of the proposed CAD has achieved promising results using a non-standard MRIs database.

  • 81.
    Abd-Ellah, Mahmoud Khaled
    et al.
    Electronics and Communications Department, Al-Madina Higher Institute for Engineering and Technology, Giza, Egypt.
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science. Faculty of Engineering, Al-Azhar University, Qena, Egypt.
    Khalaf, Ashraf A.M.
    Electronics and Communications Department, Faculty of Engineering, Minia University, Minia, Egypt.
    Hamed, Hesham F.A.
    Electronics and Communications Department, Faculty of Engineering, Minia University, Minia, Egypt.
    A Review on Brain Tumor Diagnosis from MRI Images: Practical Implications, Key Achievements, and Lessons Learned2019In: Magnetic Resonance Imaging, ISSN 0730-725X, E-ISSN 1873-5894, Vol. 61, p. 300-318Article in journal (Refereed)
    Abstract [en]

    The successful early diagnosis of brain tumors plays a major role in improving the treatment outcomes and thus improving patient survival. Manually evaluating the numerous magnetic resonance imaging (MRI) images produced routinely in the clinic is a difficult process. Thus, there is a crucial need for computer-aided methods with better accuracy for early tumor diagnosis. Computer-aided brain tumor diagnosis from MRI images consists of tumor detection, segmentation, and classification processes. Over the past few years, many studies have focused on traditional or classical machine learning techniques for brain tumor diagnosis. Recently, interest has developed in using deep learning techniques for diagnosing brain tumors with better accuracy and robustness. This study presents a comprehensive review of traditional machine learning techniques and evolving deep learning techniques for brain tumor diagnosis. This review paper identifies the key achievements reflected in the performance measurement metrics of the applied algorithms in the three diagnosis processes. In addition, this study discusses the key findings and draws attention to the lessons learned as a roadmap for future research.

  • 82.
    Abd-Ellah, Mahmoud Khaled
    et al.
    Electronics and Communications Department, Al-Madina Higher Institute for Engineering and Technology, Giza, Egypt.
    Khalaf, Ashraf A. M.
    Faculty of Engineering, Minia University, Minia, Egypt.
    Awad, Ali Ismail
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Digital Services and Systems. Faculty of Engineering, Al-Azhar University, Qena, Egypt.
    Hamed, Hesham F. A.
    Faculty of Engineering, Minia University, Minia, Egypt.
    TPUAR-Net: Two Parallel U-Net with Asymmetric Residual-Based Deep Convolutional Neural Network for Brain Tumor Segmentation2019In: Image Analysis and Recognition: 16th International Conference, ICIAR 2019, Waterloo, ON, Canada, August 27–29, 2019, Proceedings, Part II / [ed] Fakhri Karray, Aurélio Campilho, Alfred Yu, Springer, 2019, p. 106-116Conference paper (Refereed)
    Abstract [en]

    The utilization of different types of brain images has been expanding, which makes manually examining each image a labor-intensive task. This study introduces a brain tumor segmentation method that uses two parallel U-Net with an asymmetric residual-based deep convolutional neural network (TPUAR-Net). The proposed method is customized to segment high and low grade glioblastomas identified from magnetic resonance imaging (MRI) data. Varieties of these tumors can appear anywhere in the brain and may have practically any shape, contrast, or size. Thus, this study used deep learning techniques based on adaptive, high-efficiency neural networks in the proposed model structure. In this paper, several high-performance models based on convolutional neural networks (CNNs) have been examined. The proposed TPUAR-Net capitalizes on different levels of global and local features in the upper and lower paths of the proposed model structure. In addition, the proposed method is configured to use the skip connection between layers and residual units to accelerate the training and testing processes. The TPUAR-Net model provides promising segmentation accuracy using MRI images from the BRATS 2017 database, while its parallelized architecture considerably improves the execution speed. The results obtained in terms of Dice, sensitivity, and specificity metrics demonstrate that TPUAR-Net outperforms other methods and achieves the state-of-the-art performance for brain tumor segmentation.

  • 83.
    Abdelnasser, Amr
    et al.
    Geological Engineering Department, Faculty of Mines, Istanbul Technical University. Geology Department, Faculty of Science, Benha University, Benha.
    Kumral, Mustafa
    Geological Engineering Department, Faculty of Mines, Istanbul Technical University.
    Zoheir, Basem
    Geology Department, Faculty of Science, Benha University, Benaha.
    Karaman, Muhittin
    Geological Engineering Department, Faculty of Mines, Istanbul Technical University.
    Weihed, Pär
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    REE geochemical characteristics and satellite-based mapping of hydrothermal alteration in Atud gold deposit, Egypt2018In: Journal of African Earth Sciences, ISSN 0899-5362, Vol. 145, p. 317-330Article in journal (Refereed)
    Abstract [en]

    New geochemical data of the hydrothermal alteration zones associated with gold-bearing quartz veins at Atud mine are used for better understanding the ore evolution and exploration vectoring. ASTER and Landsat 8 OLI data are used to elucidate the distribution of gold-associated alteration zones. Three alteration zones are defined; zone 1 (sericite-kaolinite-quartz-pyrite), zone 2 (quartz-sericite-albite-pyrite), and zone 3 (chlorite-carbonate-epidote ± pyrite). Sericite and hydrothermal quartz are confined to the mineralized quartz veins. Fe-OH and OH-bearing minerals are observed along NW- and NE-trending shear zones in the Main Atud mine. The association of gold-bearing quartz veins and sericite alteration is constrained by processing ASTER- and OLI-imagery data. The geochemical data of the ore-enveloping hydrothermally altered rocks are used to assess the behavior of the REEs during the mineralization process. Mild enrichment in LREE and significant enrichment in the HREE are associated with sericite in zones (1) and (2) alterations. Carbonate alteration (zone 3) is enriched in LREE and in immobile HREE. Moreover, LREE and Eu anomalies have negative correlated with the Alteration Index (A.I.) and K2O index (K.I.) in zones 1 and 2, suggesting high mobility of LREE in K-rich hydrothermal fluids. On the other hand, HREE anomalies with increasing MgO index (M.I.) in alteration zone 3 may imply low solubility of these elements in alkaline solutions. Au anomalies linked to sericite/silica alteration is a rather meaningful vector for further exploration in the area.

  • 84.
    Abdi, Mohamed
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
    Ali, Mahammed
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
    Hur prototyper kan användas i arbetet med applikationer riktade till ungdomar2020Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Abstract Using prototypes when developing IT artifacts is not something new. With the help of prototypes, developers get a chance to show what the IT artifact can look like without investing too much time or money. The end user also gets the chance to see the IT artifact before it has been developed and gets a chance to add or remove features and requirements. This study examines how to use prototypes and how the use of prototypes improves the experience of mobile application interfaces for young people. In the study, young people from a leisure center were interviewed regarding the development of a mobile application. Three different prototypes have been presented and data has been collected on those prototypes to then see how the different prototypes can be used in a development process. After data collection, it turned out that the Lo-fi prototype did not contribute as much as the Hi-fi prototypes, so there is no need to develop Lo-fi prototypes in order to obtain data on user experience.

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  • 85.
    Abdihalim Yusuf, Awo
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences.
    "Han gick igenom det han behövde göra för att bli en man": Narrativ analys om unga mäns erfarenheter och upplevelser av att få sin maskulinitet ifrågasatt2020Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
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  • 86.
    Abdikalikova, Zamira
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Compactness of embedding between Sobolev type spaces with multiweighted derivatives2009In: AIHT : Analysis, Inequalities and Homogenization Theory: Midnight sun conference in honor of Lars-Erik Persson, 2009Conference paper (Other academic)
    Abstract [en]

    We consider a new Sobolev type function space called the space with multiweighted derivatives. As basis for this space serves some differential operators containing weight functions. We establish necessary and sufficient conditions for the boundedness and compactness of the embedding between the spaces with multiweighted derivatives in different selections of weights.

  • 87.
    Abdikalikova, Zamira
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Embedding theorems for spaces with multiweighted derivatives2007Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    This Licentiate Thesis consists of four chapters, which deal with a new Sobolev type function space called the space with multiweighted derivatives. This space is a generalization of the usual one dimensional Sobolev space. Chapter 1 is an introduction, where, in particular, the importance to study function spaces with weights is discussed and motivated. In Chapter 2 we consider and analyze some results of L. D. Kudryavtsev, where he investigated one dimensional Sobolev spaces. Moreover, in this chapter we present and prove analogous results by B. L. Baidel'dinov for generalized Sobolev spaces. These results are crucially for the proofs of the main results of this Licentiate Thesis. In Chapter 3 we prove some embedding theorems for these new generalized Sobolev spaces. The main results of Kudryavtsev and Baidel'dinov about characterization of the behavior of functions at a singularity take place in weak degeneration of spaces. However, with the help of our new embedding theorems we can extend these results to the case of strong degeneration. In Chapter 4 we prove some new estimates for each function in a Tchebychev system. In order to be able to study also compactness of the embeddings from Chapter 3 such estimates are crucial. I plan to study this question in detail in my further PhD studies.

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  • 88.
    Abdikalikova, Zamira
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Some new results concerning boundedness and compactness for embeddings between spaces with multiweighted derivatives2009Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This Doctoral Thesis consists of five chapters, which deal with a new Sobolev type function space called the space with multiweighted derivatives. This space is a generalization of the usual one dimensional Sobolev space. As basis for this space serves some differential operators containing weight functions.Chapter 1 is an introduction, where, in particular, the importance to study function spaces with weights is discussed and motivated. In Chapter 2 we prove some new estimates for each function in a Tchebychev system. In order to be able to study compactness of the embeddings from Chapter 3 such estimates are crucial.In Chapter 3 we rewrite and present some results of L. D. Kudryavtsev, where he investigated one dimensional Sobolev spaces. Moreover, in this chapter we rewrite and discuss some analogous results by B. L. Baidel'dinov for generalized Sobolev spaces. These results are not available in the Western literatures in this way and they are crucial for the proofs of the main results in Chapter 4. In Chapter 4 we prove some embedding theorems for these new generalized Sobolev spaces. The main results of Kudryavtsev and Baidel'dinov about characterization of the behavior of functions at a singularity take place in weak degeneration of the spaces. However, with the help of our new embedding theorems we can extend theseresults to the case of strong degeneration.The main aim of Chapter 5 is to establish boundedness and compactness of the embedding considered in Chapter 4.In Chapter 4 basically only sufficient conditions for boundedness of this embedding were obtained. In Chapter 5 we obtain necessary and sufficient conditions for boundedness and compactness of this embedding and the main results are proved in a different way.

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  • 89. Abdikalikova, Zamira
    et al.
    Baiarystanov, Askar O.
    Oinarov, Ryskul
    Compactness of embedding between spaces with multiweighted derivatives: the case 1 ≤ p ≤ q2009Report (Other academic)
  • 90.
    Abdikalikova, Zamira
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Kalybay, Aigerim
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Summability of a Tchebysheff system of functions2007Report (Other academic)
  • 91.
    Abdikalikova, Zamira
    et al.
    L.N. Gumilyov Eurasian National University.
    Oinarov, Ryskul
    L.N. Gumilyov Eurasian National University.
    Persson, Lars-Erik
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Boundedness and compactness of the embedding between spaces with multiweighted derivatives when 12011In: Czechoslovak Mathematical Journal, ISSN 0011-4642, E-ISSN 1572-9141, Vol. 61, no 1, p. 7-26Article in journal (Refereed)
    Abstract [en]

    We consider a new Sobolev type function space called the space with multiweighted derivatives W-p(n),(alpha) over bar, where (alpha) over bar = (alpha(0), alpha(1), ......, alpha(n)), alpha(i) is an element of R, i = 0, 1,......,n, and parallel to f parallel to W-p(n),((alpha) over bar) = parallel to D((alpha) over bar)(n)f parallel to(p) + Sigma(n-1) (i=0) vertical bar D((alpha) over bar)(i)f(1)vertical bar, D((alpha) over bar)(0)f(t) = t(alpha 0) f(t), d((alpha) over bar)(i)f(t) = t(alpha i) d/dt D-(alpha) over bar(i-1) f(t), i = 1, 2, ....., n. We establish necessary and sufficient conditions for the boundedness and compactness of the embedding W-p,(alpha) over bar(n) -> W-q,(beta) over bar,(m) when 1 <= q < p < infinity, 0 <= m < n

  • 92.
    Abdikalikova, Zamira
    et al.
    L.N. Gumilyov Eurasian National University.
    Oinarov, Ryskul
    L.N. Gumilyov Eurasian National University.
    Persson, Lars-Erik
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
    Boundedness and compactness of the embedding between spaces with multiweighted derivatives when 1≤ q2009Report (Other academic)
  • 93. Abdo, Eli
    Komplexiteten bakom masken: En kvalitativ studie om intagna ungdomars rolltagande2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
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  • 94. Abdollahi, Golrou
    Creating a model for customer loyalty in banking industry of Iran2008Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The customer loyalty concept has received much attention from both academics and practitioners in different industry. Banking industry is also not excluded and because it has a highly interaction with the customers, getting familiar with this concept would be very important and helpful for managers in defining strategies. So this research attempts to find the customer loyalty factors and their relationships with banking industry in one of the developing countries in order to provide a model for this concept. In order to do this a questionnaire is designed and validated ,then based on the data which were gained from the 400 respondents’ answers to the designed questionnaire, the analysis is done on and the results and the relations are explained. Satisfaction, choosing, habit, tangible and intangible service quality and switching cost are the factors which influence the loyalty factor. To analyze the data, SPSS and LISREL software were used. It is hoped that this Master thesis would be helpful and interesting for both academics and practitioners.

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  • 95.
    Abdollahi, Morteza
    et al.
    Faculty of Engineering, Urmia University, Iran.
    Bahrami, Ataallah
    Department of Mining Engineering, Faculty of Engineering – Urmia University, P.O. Box 57561/51818, Iran.
    Saleh Mirmohammadi, Mir
    School of Mining Engineering, University of Tehran, Iran.
    Kazemi, Fatemeh
    Faculty of Engineering – University of Kashan, Iran.
    Danesh, Abolfazl
    Complex of Copper Processing – Sungun, Headquarters Rd, Tabriz, East Azerbaijan Province, Iran.
    Ghorbani, Yousef
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
    A process mineralogy approach to optimize molybdenite flotation in copper: molybdenum processing plants2020In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 157, article id 106557Article in journal (Refereed)
    Abstract [en]

    The Sungun copper-molybdenum operation in Iran uses a typical copper-molybdenum flowsheet to produce separate copper and molybdenum concentrates through flotation and regrinding of the rougher concentrates arising from the primary circuit. This site was used as a case study limited to the feed and products of the copper-molybdenum separation circuit, in which process mineralogy might improve the quality of the molybdenum concentrate thorough diagnostic analysis of key flowsheet streams. The undesirable presence of copper in the molybdenum concentrate was identified as a key focus for the investigation by process mineralogy, which has a history of successful process diagnosis. This is because it develops information on minerals, which is far more informative than chemical assays alone. Together with the assays, the mineralogical data inform the investigator of the type and quantity of minerals present, their state of liberation and textural associations, and metal recovery.

    A key finding was that the appearance of chalcopyrite in the molybdenum concentrate was due to the presence of a chalcopyrite-pyrite texture that avoided the chalcopyrite depression in the molybdenum circuit because of suitable pyrite flotation conditions. Recovery of liberated pyrite to this concentrate also diluted the molybdenum concentrate. The open-circuit format of the regrind circuit also contributed to the unnecessary production of ultrafine particles. This flaw expressed itself as ultrafine losses of molybdenite to the flotation tailings.

  • 96.
    Abdollahpour, N.
    et al.
    Department of Ergonomics, University of Social Welfare and Rehabilitation Science, Tehran.
    Helali, Faramarz
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences.
    Hoseini, M.A.
    Department of Rehabilitation Management, University of Social Welfare and Rehabilitation Science, Tehran.
    Ghomshe, F. Tabatabaei
    Department of Industrial Engineering, Institute for Higher Education of Kar, Qhazvin.
    Ziarani, M. Hamzeiyan
    Department of Industrial Engineering, Institute for Higher Education of Kar, Qhazvin.
    Peysepar, S.
    HSE Unit of MAPNA Turbine Blade Engineering and Manufacturing Company-PARTO, Karaj.
    An improving working condition system (health, safety and ergonomics) survey and analysis with macroergonomics approach in a manufacturing company from Iran Power Plant Industry in 20102013In: Iran Occupational Health, ISSN 1735-5133, E-ISSN 2228-7493, Vol. 10, no 4, p. 55-64Article in journal (Refereed)
    Abstract [en]

    Background and aims: World experience has shown the positive effect of applying ergonomics in improving work conditions, of quality and quantity of production, reducing prevalence of work-related musculoskeletal disorders, saving costs and increase of productivity in the different contents. These are possible only with utilizing properly improving work condition system and Macroergonomics approach. The aim of the study was how determine situation and analyzing the working conditions using the macroergonomics approach in a Power Plant Industry. Methods: This study is a cross-sectional study. First, the program for improvement of work conditions were evaluated using three questionnaires including managers viewpoint (29 samples), health, safety and environment employees viewpoint (5 samples) and operating workers viewpoint (85 samples) and then three other instruments of macroergonomics were used. Results: According to the results of 1) questionnaires and corresponding tests, three of the program's goals of improving working conditions and promotion practices that have the same opinions, but in some cases had different opinions. 2) Future workshops and interviews, the lack of participatory leadership and lack of collaborative work systems for the company stated. 3) Apply ergonomics checklist of ILO, an appropriate interaction between the top and bottom surfaces revealed. Conclusion: Awakened needs of change in the middle and lower levels of organization to solve problems relate to improving working conditions of the system was created. To implement an Ergonomics Intervention Programme Technique Process requires the full support management and employees.

  • 97.
    Abdollahpour, Nosrat
    et al.
    Department of Occupational Health, School of Health, Tabriz University of Medical Sciences, Tabriz.
    Dastranj, Farahnaz
    Occupational Health, International Campus of Shahid Sadoughi University of Medical Sciences (IC-SSUMS) Yazd – Iran.
    Helali, Faramarz
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Human Work Science.
    Ziarani, M. Hamzeian
    Zeiaei, M.
    Stress Prevention at Work Checkpoints: Practical improvements for stress prevention the workplace2016 (ed. Free)Book (Other (popular science, discussion, etc.))
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  • 98.
    Abdollahpour, Nosrat
    et al.
    Department of Occupational Health Engineering, Tabriz University of Medical Sciences Tabriz, Iran.
    Helali, Faramarz
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Human Work Science.
    Implementing 'Awakened Need of Change' for Applying Ergonomics to Work System with Macroergonomics Approach in an Industrially Derveloping Country and its Meta-Reflection2016In: Journal of Ergonomics, E-ISSN 2165-7556, Vol. 6, no 6, article id 182Article in journal (Refereed)
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  • 99.
    Abdollahpour, Nosrat
    et al.
    Department of Occupational Health Engineering and Ergonomics, Tabriz University of Medical Sciences, Tabriz, Iran.
    Helali, Faramarz
    Luleå University of Technology, Department of Social Sciences, Technology and Arts, Humans and Technology.
    Implementing Practical Ergonomics Knowledge Transfer Using Ergonomic Checkpoints to Support the Participatory Ergonomics Process in an Industrially Developing Country2022In: IISE Transactions on Occupational Ergonomics and Human Factors, ISSN 2472-5838, Vol. 10, no 2, p. 59-70Article in journal (Refereed)
    Abstract [en]

    Background: Implementing ergonomics principles in workplaces requires good knowledge transfer with the participation of professionals, workers, and managers.

    Purpose: This study aimed to investigate practical ergonomics knowledge transfer to support the participatory ergonomics process that could lead problem identification and the implementation and development of feasible and low-cost solutions.

    Methods: This was action research on the type of intervention and conducted in four phases. Accordingly, 106 participants from different organizational levels of a manufacturing company, facilitated by an ergonomist by forming 14 action groups, were involved in practical ergonomics knowledge transfer to identify and solve problems of work divisions. Participant reflections were obtained through interviews and field notes.

    Results: The results contributed to the presentation of 145 solutions to improve working conditions by the action groups. Most solutions were low-cost and 57.5% were implemented. The interviews showed the development of a participation culture, learning and institutionalizing ergonomics principles in practice, and improving competence in identifying problems and implementing solutions.

    Conclusions: The key findings were achieved by the participatory ergonomics intervention approach through different tactics of participant engagement, including a pushing tactic for intentional learning and a pulling tactic for voluntary learning, which resulted in the improvement of working conditions and promotion of a participatory culture.

  • 100.
    Abdollahpour, Nosrat
    et al.
    Department of Occupational Health and Ergonomics, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran.
    Helali, Faramarz
    Luleå University of Technology, Department of Social Sciences, Technology and Arts, Humans and Technology.
    Rasoulzadeh, Yahya
    Department of Occupational Health and Ergonomics, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran; Iranian Traffic Injuries Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran.
    Hassankhani, Hadi
    Centre of Qualitative Studies, Department of Medical Surgical Nursing, School of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran.
    Barriers and Challenges to Human Factors/Ergonomics Knowledge Transfer to Small Business Enterprises in an Industrially Developing Country2023In: IISE Transactions on Occupational Ergonomics and Human Factors, ISSN 2472-5838, Vol. 11, no 1-2, p. 14-31Article in journal (Refereed)
    Abstract [en]

    OCCUPATIONAL APPLICATION

    We found that small business enterprises (SBEs) face intra- and extra-organizational barriers in different dimensions related to their work system to practically implement human factors/ergonomics (HFE) knowledge transfer and to achieve its benefits in an industrially developing country. Utilizing a three-zone lens, we evaluated the feasibility of overcoming the barriers identified by stakeholders, especially ergonomists. To overcome the identified barriers in practice, three types of macroergonomics interventions (top-down, middle-out, and bottom-up) were distinguished through macroergonomics theory. The bottom-up approach of macroergonomics, as a participatory HFE intervention, was considered as the entry point to overcome the perceived barriers in the first zone of the lens, which included such themes as lack of competence, lack of involvement and interaction, and inefficient training and learning approaches. This approach focused on improving emotional literacy as a care zone among the small business enterprise personnel.

    TECHNICAL ABSTRACT

    Background: The human factors/ergonomics (HFE) knowledge transfer process is one of the potential challenges for organizations in industrially developing countries (IDCs), especially in small business enterprises (SBEs).

    Purpose: We explored perceived barriers and challenges to the practical implementation of HFE knowledge transfer to SBEs in Iran, as an IDC, to improve their work systems.

    Methods: An exploratory qualitative study was conducted using a conventional content analysis. To identify perceived barriers, we conducted individual interviews (n = 38) and a focus-group discussion (n = 17) with the participation of the SBEs personnel and the officials of related organizations. Inductive content analysis was used for data analysis. We then categorized the identified perceived barriers (themes) to determine the feasibility of overcoming them.

    Results: Regarding perceived barriers, the following nine themes were extracted: lack of competence, resistance to change, technological infrastructure problems, lack of involvement and interaction, using an inappropriate mode of knowledge, lack of culture-building about HFE, inefficient training and learning approaches, lack of scientific management, and extra-organizational problems. Further, a three-zone lens was identified for the extracted themes to check the feasibility of overcoming them.

    Conclusions: We identified nine intra- and extra-organizational barriers in the HFE knowledge transfer process to SBEs. We further evaluated the ways of overcoming perceived barriers defined in the three-zone lens to adapt them for building creative workplace culture zones (care, creative, and improvement). We distinguished three types of macroergonomics interventions (top-down, middle-out, and bottom-up) and three supporting strategies, including, knowledge, management and employees, and participatory HFE.

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