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Showing results 2079 to 2098 of 9383
  • BB


  • Authors: Aljohani, Alhanouf;  Advisor: -;  Participants: Nejaim, Shatha; Khayyat, Mashael; Aboulola, Omar (2022)

  • Every year millions of Muslims travel to Saudi Arabia to perform the fifth pillar of Islam, the Hajj pilgrimage Aligned with the Kingdom's 2030 vision, the Ministry of Health works to provide advanced free medical services to pilgrims by implementing digital transformation. Hajj service providing companies are concerned with offering high-quality logistical services and removing obstacles that may face the pilgrims including those related to health and safety. In order to integrate healthcare applications with effectiveness, there is a need to have a unified electronic platform.

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  • Authors: Fakorede, Samson Taiwo;  Advisor: -;  Participants: Adekoya, Khalid Olajide; Fasakin, Taiwo Peter; Odufisan, Joshua Odubambo; Oboh, Bola (2021)

  • There was variation in the morphological features of the external ear of the sampled subjects. The external ear features vary in the right and left ears in both sexes of the ethnic groups. All variables were statistically significant (p < 0.05) except ear width. Univariate discriminant function gave sex prediction accuracies between 56.4 and 57.3% for left and right ears, respectively. Population-specific sex prediction accuracy using stepwise discriminant analysis of left ear variables ranged 58–69.7% and 57.5–74.2% for right ear.

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  • Authors: Luo, B.;  Advisor: -;  Participants: Wang, H.; Liu, H.; Li, B.; Peng, F. (2019)

  • In modern digital manufacturing, nearly 79.6% of the downtime of a machine tool is caused by its mechanical failures. Predictive maintenance (PdM) is a useful way to minimize the machine downtime and the associated costs. One of the challenges with PdM is early fault detection under time-varying operational conditions, which means mining sensitive fault features from condition signals in long-term running. However, fault features are often weakened and disturbed by the time-varying harmonics and noise during a machining process. Existing analysis methods of these complex and diverse data are inefficient and time-consuming. This paper proposes a novel method for early fault detection u...

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  • Authors: Gerrity, D.;  Advisor: -;  Participants: Papp, K.; Stoker, M.; Sims, A.; Frehner, W. (2021)

  • The current study aimed to compare the performance of virus recovery and detection methods, detect and quantify SARS-CoV-2 genetic material in two Southern Nevada sewersheds from March–May 2020, and better understand the potential link between COVID-19 incidence/prevalence and wastewater concentrations of SARS-CoV-2 RNA. SARS-CoV-2 surrogate recovery (0.34%–55%) and equivalent sample volume (0.1 mL–1 L) differed between methods and target water matrices, ultimately impacting method sensitivity and reported concentrations. Composite sampling of influent and primary effluent resulted in a ∼10-fold increase in concentration relative to corresponding grab primary effluent samples, presuma...

  • BB


  • Authors: O'Connor, Brian;  Advisor: -;  Participants: - (2015)

  • Biodiversity is continuing to decline. This crisis has been recognised by the Convention on Biological Diversity (CBD), whose members have set ambitious targets to avert ongoing declines in the state of biodiversity by 2020. These so called “Aichi Biodiversity Targets” (ABTs) are organized around five strategic goals, with indicators showing the level of progress made towards each target. Currently, measurements of many ABT indicators are not available. The Essential Biodiversity Variable (EBV) framework, developed by the Group on Earth Observations Biodiversity Observation Network (GEO BON), attempts to form a coherent and harmonised set of observations of biodiversity. In this paper...

  • BB


  • Authors: Ostermann, Frank O.;  Advisor: -;  Participants: - (2015)

  • Biodiversity is continuing to decline. This crisis has been recognised by the Convention on Biological Diversity (CBD), whose members have set ambitious targets to avert ongoing declines in the state of biodiversity by 2020. These so called “Aichi Biodiversity Targets” (ABTs) are organized around five strategic goals, with indicators showing the level of progress made towards each target. Currently, measurements of many ABT indicators are not available. The Essential Biodiversity Variable (EBV) framework, developed by the Group on Earth Observations Biodiversity Observation Network (GEO BON), attempts to form a coherent and harmonised set of observations of biodiversity. In this paper...

  • LA


  • Authors: Verhoef, W.; Gökmen, M.;  Advisor: -;  Participants: - (2013)

  • Thesis deals with improving the quantification of hydrological fluxes, particularly evapotranspiration, for continuously or seasonally water-stressed regions; presents an integrated method, which combines remote sensing based evapotranspiration and precipitation estimates with available ground data to establish each component of the water balance; presents a regional framework for an integrated and spatio- temporally distributed assessment of human-induced trends in the hydrology and the associated ecological health of a semi-arid basin where both human activities (i.e. agriculture) and natural ecosystems are highly groundwater- dependent; describes an RS-based and quantitative framew...

  • SH


  • Authors: -;  Advisor: -;  Participants: - (2016)

  • The report provides companiesan eye-opening approach to sustainable growth in the countries where they operate. Governments seeking to collaborate with the private sector to address development challenges in the context of the global goals for sustainable development. The report provides policy-makers with a framework to guide their engagement of companies and the opportunities for strategic partnerships around key issues.

  • BB


  • Authors: Yang, Zheng;  Advisor: -;  Participants: - (2014)

  • Knowledge of population dynamics is essential for managing and conserving wildlife. Traditional methods of counting wild animals such as aerial survey or ground counts not only disturb animals, but also can be labour intensive and costly. New, commercially available very high-resolution satellite images offer great potential for accurate estimates of animal abundance over large open areas. However, little research has been conducted in the area of satellite-aided wildlife census, although computer processing speeds and image analysis algorithms have vastly improved. This paper explores the possibility of detecting large animals in the open savannah of Maasai Mara National Reserve, Ken...

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  • Authors: Perkins, K.S.;  Advisor: -;  Participants: Miller, D.M.; Sandquist, D.R.; Macias, M.; Roach, A. (2018)

  • We also conducted 90 single‐ring, ponded infiltration experiments in adjacent channels to evaluate field‐saturated hydraulic conductivity and particle size distributions. The abandoned channels are still morphologically evident but are disconnected from runoff sources at higher elevations. Infiltration test results show that water infiltrates twice as fast in the active channels. Excavation showed weak soil development with fewer plant roots beneath the abandoned channel. Scanning electron microscopy of surface samples showed the presence of cyanobacteria only in abandoned channels. Plants up to 3 m away from both channels showed physiological responses to channel water applied in a s...

  • BB


  • Authors: Ibe, Francis Chizoruo;  Advisor: -;  Participants: Duru, Chidi Edbert; Isiuku, Benaiah Obinna; Akalazu, Jacienta Ngozi (2021)

  • Analysis of soil samples revealed mean PAH levels ranging from 1.22E−02 ± 0.00 to 5.60E−02 ± 0.01 mg/kg, with higher PAH concentrations observed at 0–10 cm compared to other depths. The sum of PAHs (∑PAHs) ranged from 1.58E−01 to 6.71E−01 mg/kg, as the sum of low molecular weight PAHs (∑LPAHs) varied from 7.16E−03 to 1–1.60E−01 mg/kg, while the sum of high molecular weight PAHs (∑HPAHs) ranged from 1.81E−02 to 5.42E−01 mg/kg. The sum of carcinogenic PAHs (∑Carcino-PAHs) varied from 5.39E−01 to 9.74E−02 mg/kg, indicating elevated levels of carcinogens in the sampled soils. Diagnostic ratio, principal component, and correlation analysis of the results revealed that pyrogenic sources wer...

  • BB


  • Authors: Oyewole, Odunayo Emmanuel;  Advisor: -;  Participants: Simon-Oke, Iyabo Adepeju (2022)

  • Soil-Transmitted Helminths are a group of parasites that cause gastrointestinal infections in humans and require the soil to develop into their infective forms. Ecological factors such as soil temperature, soil pH and rainfall patterns are, however, important determinants for the successful transmission of soil helminths as they play a major role in their abundance and survival in the soil. The study investigated the ecological factors influencing the transmission of soil-transmitted helminths in Ifedore district, Southwest Nigeria.

  • BB


  • Authors: Groen, T.A.;  Advisor: -;  Participants: - (2017)

  • Background: Culex pipiens is the major vector of West Nile virus in Europe, and is causing frequent outbreaks throughout the southern part of the continent. Proper empirical modelling of the population dynamics of this species can help in understanding West Nile virus epidemiology, optimizing vector surveillance and mosquito control efforts. But modelling results may differ from place to place. In this study we look at which type of models and weather variables can be consistently used across different locations. Methods: Weekly mosquito trap collections from eight functional units located in France, Greece, Italy and Serbia for several years were combined. Additionally, rainfall, rel...

  • BB


  • Authors: AŞKAN, Emine;  Advisor: -;  Participants: - (2019)

  • In this study, producer and consumer prices and the marketing structure of pistachios in Turkey were examined. Between 2003 and 2017, production, consumption, foreign trade, price fluctuations, and marketing were emphasized. It was determined that the number of fruit trees in pistachios increased. According to current and real prices, pistachio marketing margins are calculated, and producer and consumer chain indexes are calculated according to current prices and compared with annual inflation rates. Supply and demand models related to pistachio were estimated and interpreted statistically.

  • BB


  • Authors: El-Shatla, Hani;  Advisor: -;  Participants: Ahmed, Eman A.; Essa, Reda; Mohamed, Manal F. (2019)

  • This work was based on secondary data issued by the Ministry of Agriculture and Land Reclamation and field data obtained through personal interviews of wheat and tomato farmers by irrigation method (spray, flooding, and the method of lifting and distribution of water in the case of the use of diesel and conveyor belts), and the use of electricity and deep pumps, through the questionnaire design. A sample of 40 farmers was used. The results showed that the productivity and economic efficiency indicators for the lifting and distribution of groundwater by a power source during the agricultural season 2017/2018 increased the average productivity of total yield, net revenue/fed., net retur...

  • BB


  • Authors: El-Gendi, A.;  Advisor: -;  Participants: Abdallah, H.; Amin, A. (2021)

  • The cost of the prepared blend membrane using batch casting machine technique reached to 36 $/m2 for flat sheet polymeric membrane which was cheaper than the cost of sheets of commercial RO membranes. The original capital investment will be recovered in 7.5 years with estimation of machine lifetime 25 years.

  • BB


  • Authors: Le, Van Chinh;  Advisor: -;  Participants: - (2021)

  • The water value of rice irrigation is lower about 1.8 times than that of cash crops. In addition, though the household’s farming size remained, the water value of Spring crop with often water shortage occurred, was higher than that of Summer crop with a factor of 1.4. Several solutions are recommended: (i) changing the household's cropping structure toward increased crop area producing high value and using less water; (ii) applying advanced rice cultivation practices with saving-water irrigation, and improving water management including water reuse; (iii) applying water prices to increase water use efficiency in irrigation with adaptation to climate change.