Potential demand for public transport in Riyadh City, Saudi Arabia

In Riyadh City, as an effort to reduce the excess dependency on private vehicles, in 2012 city’s authorities have approved the construction of a public transport system and travel demand management strategies. On this basis, this study question is “what are the procedures and approaches that have to be undertaken to ensure public transport uptake in Riyadh City?” To answer the study question, a relevant literature has been reviewed in order to identify major successes of public transport services around the world. In addition, two empirical studies were conducted in Riyadh during the study course include a series of semi-structured interviews with local stakeholders and a web-based-general-public survey. The study findings were consolidated and discussed to provide concrete answers to the study question. The study found considerable support by stakeholders and the general-public for introducing public transport services and reshaping the existing travel strategies. It was also found that the future planning of the public transport system in Riyadh City has to pay considerable attention to social and cultural perspectives of its citizens; for safety and separate family carriages. The study also found that improving infrastructure to enhance accessibility to and from transit stations, selecting appropriate TOD sites, parking charges are effective strategies. Finding from a stated preference experiment showed that the likelihood of shifting people from private cars to public transport in Riyadh City would increase by a reduction in public transport cost, number of changes, and increase in the service frequency. Most importantly, there are cultural aspects involving perceptions towards public transport that play an important role in people’s intention to use public transport. For example, it found that highly qualified individuals were more likely to perceive public transport as a 'taking a step down into the World' and this is a point in which public transport authorities need to focus in order to ease this perception. Finally, this is the first time to derive estimates of the value of travel time savings for Riyadh City

Introducing public transport and relevant strategies in Riyadh City, Saudi Arabia: a stakeholders? perspective

There is an increasing concern about the growth of car dependence and its associated negative impacts on cities, including economic and environmental factors, urban form and lifestyle. City authorities worldwide now pay increasing attention to sustainable transport systems by enhancing or introducing public transit services. An example is Riyadh City, Saudi Arabia, which has witnessed a significant growth in car ownership and population. Current efforts to reduce high dependence on private cars in Riyadh involve the development of a new public transport system. Against this background, this paper considers the wider impacts of the new public transport system in Riyadh City on urban form, economics, environment, social norms and culture. The analysis is based on in-depth interviews conducted with transport experts and officials of relevant authorities in Riyadh City. The study results highlight that the city’s urban form would have the highest impact on the uptake of public transport. Moreover, stakeholders assumed that the provision of public transport services in Riyadh would improve mobility, decrease travel time, and create more employment opportunities, positively affecting Riyadh City’s economy and the environment. Interviewees concluded that these potential interventions would affect social norms and culture positively in the long term

On-load integrated treatment of giant power transformers in a severe scenario

The article describes the asset and risk management approach of a primary electrical company in the Middle East area. A specific maintenance strategy has been carried out for loss prevention of giant transformers, addressing mainly the corrosive sulfur. Starting from the international standards and considering the specific context, the appointed consultancy company GCC Lab selected the most efficient long-term mitigation technique: the selective depolarization. This process, developed and operated by Sea Marconi, is proven to be effective in the removal of DBDS and oil corrosive compounds, even after one year, also restoring all chemical and physical properties of the oil

Throughput/Area-Efficient Accelerator of Elliptic Curve Point Multiplication over GF(2233) on FPGA

This paper presents a throughput/area-efficient hardware accelerator architecture for elliptic curve point multiplication (ECPM) computation over GF(2233). The throughput of the proposed accelerator design is optimized by reducing the total clock cycles using a bit-parallel Karatsuba modular multiplier. We employ two techniques to minimize the hardware resources: (i) a consolidated arithmetic unit where we combine a single modular adder, multiplier, and square block instead of having multiple modular operators, and (ii) an Itoh–Tsujii inversion algorithm by leveraging the existing hardware resources of the multiplier and square units for multiplicative inverse computation. An efficient finite-state-machine (FSM) controller is implemented to facilitate control functionalities. To evaluate and compare the results of the proposed accelerator architecture against state-of-the-art solutions, a figure-of-merit (FoM) metric in terms of throughput/area is defined. The implementation results after post-place-and-route simulation are reported for reconfigurable field-programmable gate array (FPGA) devices. Particular to Virtex-7 FPGA, the accelerator utilizes 3584 slices, needs 7208 clock cycles, operates on a maximum frequency of 350 MHz, computes one ECPM operation in 20.59 s, and the calculated value of FoM is 13.54. Consequently, the results and comparisons reveal that our accelerator suits applications that demand throughput and area-optimized ECPM implementations

Sleep disorders and its effect on community

The main aim of this paper is to analysis the effect of sleep disorders on the community. This study is quantitative. The questionnaire was designed and distributed among the student in school in the city of Riyadh high and intermediate school. The sample of this study consist 100 students. The researcher visited a school in the city of Riyadh high and intermediate school sections and that on December 10 to 11 to measure the impact of sleep disorders through a questionnaire that measures the effects of lack of sleep and then make them aware of the benefits of sleep and harm of lack of sleep from the physical and psychological effects, and it gave a lecture educate the students and then distribute them brochure contain the benefits and harmful effects of sleep. SPSS 21 was used to analysis that data. The results of the study indicated that lack of sleep limits a person's ability to think and solve the problem effectively, which means that people who wake up for a long time influence them to learn at an effective level. Lack of sleep affects the ability of thinking and can limit your ability to accurately interpret events, which can be difficult to respond correctly to situations in which effective decision-making is intelligent. The lack of sleep, even for one night can lead to swelling of the eyes and turn the skin into pale skin. Keywords: Sleep disorders, community

The Mediating Effect of Organizational Climate on the Relationship between Transformational Leadership and Patient Safety: A Study on Saudi Hospitals

the main aim of this paper is to investigate the mediation effect of organizational climate on the relationship between Transformational Leadership and perceived patient safety in Saudi Hospitals from the nurses perspective. Patient safety has become a significant topic among health professionals, policy makers, and the public owing to the emphasis on the reported and unreported healthcare errors that result in negative situations. A quantitative research design was employed to collect data from nurses in Saudi hospitals to examine the hypothesized model. Out of 254 questionnaires distributed only 217 questionnaires were usable for analysis. The Partial Least Squares Structural Equation Modeling (PLS-SEM) method was used to test the hypotheses. Based on the statistical results, this study supported the relationship between Transformational Leadership and organizational climate and the relationship between organizational climate and perception of patient safety. Finally, this study confirmed the full mediating effect of organizational climate on the relationship between Transformational Leadership and perception of patient safety. The findings of the study are of a great value to both theory and practice and have important implications for practitioners and policy-makers. DOI: 10.5901/mjss.2015.v6n2s1p11

Establishing Pharmacokinetic and Pharmacodynamic Models for Antibiotics Used in Special Paediatric Populations

It is crucial to determine the proper dosage for the drugs prescribed for neonates. Extrapolating dosages from adults and older children is not a good idea to neonates because of the significant physiological differences that impact the distribution, metabolism, excretion, and absorption of medications. It is now feasible to gather more exact data on the pharmacokinetic characteristics of the research population as well as on an individual, as well as on intra- and interindividual variability, thanks to the widespread application of population pharmacokinetic analysis techniques in neonates. A feature of neonatal pharmacology is the heterogeneity of clinical reactions to single doses of a medication; this phenomenon is associated with interindividual variability in pharmacokinetic and pharmacodynamic outcomes, leading to a limited degree of predictability. In order to determine optimal dosages for antibiotics used in specific paediatric populations, this research will examine the fundamentals of pharmacokinetic (PK) and pharmacodynamic (PD) models

Anxiolytic, Antidepressant-Like Proprieties and Impact on the Memory of the Hydro-Ethanolic Extract of Origanum majorana L. on Mice

Marjoram (Origanum majorana L.) infusion has been used as folk medicine against depression and anxiety. However, no studies have been carried out yet to prove those activities scientifically. In this study, the anxiolytic, antidepressant-like effects, and memory impact of the hydro-ethanolic extracts of marjoram were evaluated in mice. The hydro-ethanolic extracts (250 and 500 mg/kg) were evaluated for their central nervous effect using six different behavioral tests such as light–dark box (LDB) and open field (OF) for anxiety, forced swim test (FST), and tail suspension test (TST) for depression, and object recognition test (ORT), Morris water maze (MWM) for the impact on memory. The experiments were realized on days 1, 7, 14, and 21 of treatments and compared with bromazepam for anxiety (1 mg/kg) and paroxetine for depression (11.5 mg/kg). The phytochemical screening was performed by HPLC, and the acute and sub-acute toxicities were performed following OCED guidelines (N°423 and 407) with biochemical parameters evaluation and histopathological analysis. Oral administration of marjoram hydro-ethanolic extract induced significant anxiolytic and antidepressant-like effects without memory impairment, increasing the exploration and time spent in the light area in the LDB test in a similar way to that of bromazepam. In the FST and TST, the extract was as effective as paroxetine (11.5 mg/kg, p.o.) in reducing immobility. The phytochemical screening showed the presence of ferulic acid, naringin, hydroxytyrosol, geraniol, and quercetin. This study approves the traditional use of this plant and encourages further investigation on its bioactive compounds

Anxiolytic, Antidepressant-Like Proprieties and Impact on the Memory of the Hydro-Ethanolic Extract of Origanum majorana L. on Mice

Marjoram (Origanum majorana L.) infusion has been used as folk medicine against depression and anxiety. However, no studies have been carried out yet to prove those activities scientifically. In this study, the anxiolytic, antidepressant-like effects, and memory impact of the hydro-ethanolic extracts of marjoram were evaluated in mice. The hydro-ethanolic extracts (250 and 500 mg/kg) were evaluated for their central nervous effect using six different behavioral tests such as light–dark box (LDB) and open field (OF) for anxiety, forced swim test (FST), and tail suspension test (TST) for depression, and object recognition test (ORT), Morris water maze (MWM) for the impact on memory. The experiments were realized on days 1, 7, 14, and 21 of treatments and compared with bromazepam for anxiety (1 mg/kg) and paroxetine for depression (11.5 mg/kg). The phytochemical screening was performed by HPLC, and the acute and sub-acute toxicities were performed following OCED guidelines (N°423 and 407) with biochemical parameters evaluation and histopathological analysis. Oral administration of marjoram hydro-ethanolic extract induced significant anxiolytic and antidepressant-like effects without memory impairment, increasing the exploration and time spent in the light area in the LDB test in a similar way to that of bromazepam. In the FST and TST, the extract was as effective as paroxetine (11.5 mg/kg, p.o.) in reducing immobility. The phytochemical screening showed the presence of ferulic acid, naringin, hydroxytyrosol, geraniol, and quercetin. This study approves the traditional use of this plant and encourages further investigation on its bioactive compounds

The Role Of EI In Effective Leadership, In The Context Of Saudi Arab: A Systematic Review

Background: The field of Emotional Intelligence (EI) is a growing field reflecting its effectiveness in different professions and institutes. There is little evidence available to seek a comprehensive role of EI in effective leadership. This study explores the role of EI in effective leadership. Aim: The aim of this study is to investigate how the component of EI plays an effective role in leadership, in the context of Saudi Arab. Method: For the purpose, a systematic approach was employed to identify and select relevant studies from key databases. Inclusion and exclusion criteria ensured the consideration of studies published within 05 years that examined the role of EI for effective leadership. Data extraction and analysis were conducted to synthesize findings from 11 selected studies. Results: In total 130 articles were explored and only 03 were found very relevant and 28 somewhat relevant based on inclusion criteria. Findings revealed that EI play a key role in any field specifically in effective leadership and leadership skills including empathy, self-management, and self-awareness. However, limitations including selection bias were acknowledged. Conclusion: The study concludes that EI can enhance the leadership role and can bring very significant advancement in the field of leadership. Since, there was no studies found that studied exclusively EI in relation with effective leadership