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Search Results: 1 - 10 of 5270 matches for " Mohammed Aljoufie "
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Development of a GIS Based Public Transport Composite Social Need Index in Jeddah  [PDF]
Mohammed Aljoufie
Journal of Geographic Information System (JGIS) , 2016, DOI: 10.4236/jgis.2016.84039
Abstract: Provision of public transport is critical for all social groups with high need. The provision of effective public transport system in Jeddah is at the top priorities of the national, regional and local plans. This paper attempts to develop a public transport composite social need index in Jeddah using GIS. Population density, car ownership, family size and income level indicators were considered for identifying the social need in Jeddah. Results indicate that Jeddah is in high social need for public transport and the provision of an efficient public transport is crucial for the city. The composite social need index has shown both dispersed and clustered patterns of high need for public transport in Jeddah. The results of this study facilitate the identification of the high social need for public transport in Jeddah. Further studies are highly recommended to include other social need indictors in Jeddah city.
Analysis of Illegal Parking Behavior in Jeddah  [PDF]
Mohammed Aljoufie
Current Urban Studies (CUS) , 2016, DOI: 10.4236/cus.2016.44026
Abstract: Parking spaces play a vital role in the transportation system. Parking policies ensure the efficient of the transportation system and the management of traffic demand. Illegal parking practice can hamper sustainability of transportation system. This paper attempts to analyze the illegal parking behavior in Jeddah city, Saudi Arabia. Car parking in the city of Jeddah is largely uncontrolled and there is a lack of management of the public parking supply and controlled parking system. Parking survey at five main locations (roads) at Jeddah city was conducted. Legal and illegal parking were observed at the five roads. The observations were distributed over three time periods: 7:00-9:00 am period (morning peak), 12:00-15:00 pm period (afternoon peak) and 18:00-21:00 pm period (evening peak). The observations were collected, studied and compared for weekdays and weekend. Results indicate that illegal parking seems to be common in Jeddah city both on weekdays and weekend hampering the sustainability of transportation system. It is crucial for Jeddah city to deploy stringent parking policies in order to reduce the consequences of illegal parking behavior and to achieve sustainability in transportation.
People’s Aspirations from Smart City Technologies: What Solutions They Have to Offer for the Crucial Challenges City of Jeddah Is Facing  [PDF]
Mohammed Aljoufie, Alok Tiwari
Current Urban Studies (CUS) , 2017, DOI: 10.4236/cus.2017.54026
Saudi Arabian urban society is faced with critical challenges such as environmental degradation, unsustainable resource consumption, inadequate public transportation, lack of walkable and bike friendly urban neighbourhoods that are hampering general conditions of liveability and wellbeing. In response to these challenges, legislators planned 6 economic cities that are metonym of smart cities, intended to economic diversification and transformation towards a knowledge based economy with the private sector partnership (PPP) and foreign direct investment (FDI). These “smart” or “economic” cities are anticipated to fascinate people to live and work in. This exploratory study was intended to understand people’s aspirations on smart city technologies that can solve urban challenges in Saudi Arabia. A total of 351 samples from the online survey, were analysed. We conclude that people in Saudi Arabia are optimistic about smart city benefits; they are also excitedly willing to contribute in smart city planning and management. We also suggest policymakers to adopt a collaborative planning mechanism based on people’s wisdom to tackle more wicked urban problems and added benefits of ICT (Information & communication technologies) and geospatial technologies.
Beyond Geographical and Cultural Barriers: The Concept of a Virtual Gallery for Arts, Design & Architecture Schools in Saudi Arabia  [PDF]
Abeer Alawad, Mohammed Aljoufie, Alok Tiwari, Lamya Daghestani
Art and Design Review (ADR) , 2015, DOI: 10.4236/adr.2015.34012
Abstract: The aim of this paper is to examine the advantages and disadvantages of a virtual gallery as a substitute for the Saudi Arabian schools of higher education in Arts, Design & Architecture which frequently organise exhibitions. Virtual galleries provide new opportunities for architects, designers, artists and experts of other disciplines to lay foundation for new social networks. These networks may establish interdisciplinary knowledge collaborations beyond global geographical barriers. Additionally, it will be an excellent opportunity for students at Saudi Arabian universities to lower the cultural barriers that separate male and female students. Virtual galleries can enrich students’ learning, enhance professional skills and also offer savings in term of practical costs (time, money and efforts) required to visit physical exhibitions.
Correlation of Endoscopic Findings with Various Helicobacter pylori Tests among Dyspeptic Patients  [PDF]
Mohammed O. Mohammed
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.519151
Abstract: Background: Helicobacter pylori is the most common chronic bacterial infection, and a significant etiological factor in acid peptic diseases and gastric cancer. Dyspepsia is a common gastrointestinal disorder, and the most common indication for gastroscopy. Detection of H. pylori during endoscopy has become standard clinical practice. Elevated levels of inflammatory markers such as C-reactive protein (CRP), are associated with pathological changes, and hence give useful information for exact diagnosis and therapy. Objectives: To determine the relationship between endoscopic findings, highly sensitive C-reactive protein level (hs-CRP) and H. pylori infection among dyspeptic patients using serological tests, stool antigen for H. pylori and antral histology. Methods: This was a prospective study; patients with dyspepsia, who referred to Kurdistan Teaching Center of Gastroenterology & Hepatology in Sulaimani City were assessed, during the period of December 2012 to March 2014. They underwent gastroscopy, and biopsies were taken from the corpus and antral portions of antral portion for histopathological exam. Patients’ serum samples were tested for H. pylori infection using ELISA method to detect (IgG & IgA) anti-bodies and stool samples were examined using rapid immunoassay method to detect H. pylori antigens. hs-CRP was assessed using ELISA. Results: One hundred dyspeptic patients were included in the study. The mean age was 34.2 years and male comprised 54% of the study samples. The common findings in oesophagogastroduodenoscopy (OGD) examination were antral gastropathy (59%) and duodenal ulcer (21%). A statistically significant (P < 0.01) correlation was found between hs-CRP and H. pylori IgG and IgA levels (titer). There was a highly significant (P < 0.01) correlation between the level of H. pylori IgG and the endoscopic findings. The highest serum level of H. pylori IgG was found in duodenal ulcer and antral gastritis, (88.86 ± 42.0) and (70.05 ± 35.2) Au/ml, respectively. There was a highly significant correlation (P < 0.01) between endoscopic findings and H. pylori positive antral biopsy, in duodenal ulcer, antral gastritis and duodenitis was 100%, 94.9% and 75% respectively. Also duodenal ulcer and antral gastritis showed high mean and percentage but no significant differences in both H. pylori IgA and stool Antigen.
General Periodic Boundary Value Problem for Systems  [PDF]
Mohammed Elnagi
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.38130
Abstract: The paper deals with the existence of nonzero periodic solution of systems, where k∈(0, π/T), α, β are n×n real nonsingular matrices, μ=(μ1…μn), f(t, u)=(f1(t, u),…,fn(t, u))∈C([0, T]×□n+,□+) is periodic of period T in the t variable are continuous and nonnegative functions. We determine the Green’s function and prove that the existence of nonzero periodic positive solutions if one of . In addition, if all i=(1…n)where λ1 is the principle eigenvalues of the corresponding linear systems. The proof based on the fixed point index theorem in cones. Application of our result is given to such systems with specific nonlinearities.
Pseudocercospora leaf and fruit spot disease of citrus: Achievements and challenges in the citrus industry: A review  [PDF]
Mohammed Yesuf
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.47046

Citruses are the worlds’ second fruit crops by volume next to banana. It is one of the most important commodity in tropical Africa as source of foreign currency, raw material for agro-industries and source of employment. The production and productivity of citrus in tropical Africa including Ethiopia are critically threatened by a number of diseases. Among others, pseudocercospora leaf and fruit spot of citrus caused by a fungus Pseudocercospora angolensis is the most destructive disease of citrus. Literature reviews have been made by searching the available information on leaf and fruit spot of citrus. Journal articles, research papers, workshop proceedings, Thesis research, manuals, and quarantine regulations were among the information sources of the review. The disease is widespread in 22 African countries including Ethiopia with a single report around Yemen in the Arabian Peninsula. Scattered research efforts have been made by different researchers in Africa mainly dealing with its geographic distribution, biology, and management practices. Fungicides, plant extracts/essential oils, and host resistance are among the research efforts made for the control of P. angolensis. Even though the disease is not yet reported to the rest of the world, it becomes a serious concern as an important quarantine pest thereby critically affecting the world trade and germplasm exchange of the citrus industry. Therefore, the purpose of this paper is to compile the scattered information on various aspects of leaf and fruit spot of citrus mainly to avail the information for researchers, development workers and policy people. Moreover, this review will suggest future research and development direction towards better understanding and sustainable management practices of the disease.

Variation of the Spectrum of Operators in Infinite Dimensional Spaces  [PDF]
Mohammed Yahdi
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.37080

The paper investigates the variation of the spectrum of operators in infinite dimensional Banach spaces. Consider the space of bounded operators on a separable Banach space when equipped with the strong operator topology, and the Polish space of compact subsets of the closed unit disc of the complex plane when equipped with the Hausdorff topology. Then, it is shown that the unit spectrum function is Borel from the space of bounded operators into the Polish space of compact subsets of the closed unit disc. Alternative results are given when other topologies are used.

A New Expression for Rhotrix  [PDF]
Abdul Mohammed
Advances in Linear Algebra & Matrix Theory (ALAMT) , 2014, DOI: 10.4236/alamt.2014.42011
This paper presents a new technique for expressing rhotrices in a generalize form. The method involves using multiple array indexes as analogous to matrix expressions, unlike the earlier method in the literature, which can only be functional in a single array computational environment. The new rhotrix look will encourage the study of rhotrix algebra and analysis from a better perspective. In addition, computing efficiency and accuracy will also be improved, particularly when the operations in rhotrix space over the new expression are algorithmatized for computing machines.
Nature of Centennial Global Climate Change from Observational Records  [PDF]
Mohammed Anwer
American Journal of Climate Change (AJCC) , 2015, DOI: 10.4236/ajcc.2015.44027
Abstract: In order to provide a better benchmark for climate simulation programs, climate data at Global Historical Climatology Network (GHCN) and Global Summary of the Day (GSOD) archived by the National Climate Data Center (NCDC) are used to ascertain the nature of climate change over the last century. After data validation, about 6000 stations are considered globally to determine the change in mean temperature, and about 5000 stations to determine that change in maximum and minimum temperatures. Global nature of temperature and its change are presented separately for January and July. Both maximum and minimum daily temperatures are used in the analysis. Trend of global change in annual precipitation is also reported here. Least square linear regression is used to ascertain the nature of these changes. Global nature of temperatures in both January and July show bimodal distributions, with the geographical region between the tropics in one mode and the region outside the tropic in another mode. The individual distributions of temperatures of both these regions show separate and similar histograms. Results indicate that over the last century, temperature in January increased more than that during July. Furthermore the minimum temperature in each case increased more than the maximum temperature. Ten separate estimates of temperature change are obtained from the data presented here using different methods. Considering all these estimates, the mean rise in temperature during January was 2.19°C, and during July was 1.72°C. The geographical nature of the rise in temperature shows that though it rises in most locations, the temperature also reduces along eastern Asia, some parts of central Russia, along south-eastern Australia, and along the east coast of the United States. Predominant rise in temperature is mostly over Europe, and in the arctic. Change in precipitation shows that though there is significant reduction rainfall globally, rainfall increases along the equator, in areas around the Gulf of Mexico, along eastern Asia, along the western coast of India, and along the eastern coast of Australia.
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