834 research outputs found

    International Students’ Perception towards Educational Tourism in the Kingdom of Bahrain

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    Educational Tourism is any type of educational program in which travelers move to another location mainly for the purpose of gaining a learning experience in that location. This research aims to become a contribution to other previous researches conducted in the field of educational tourism to analyze the educational tourism industry in the Kingdom of Bahrain as a basis for its development to attract more international students to study in universities and higher education institutions. The researchfollowed a quantitative methodology by distributing a survey questionnaire to one hundred international students from private universities in the Kingdom. The research adopted the random sampling technique and analyzed the data collected from those surveys statistically using mean, r-value and p-value figures. On the basis of research findings it is recommended that universities should improve their services provided to international students in terms of quality, speed and efficiency and to provide better facilities and more academic qualifications and degrees. Bahrain, in general, should create an educational environment that is strong enough and well-reputed to attract more international students and other universities to establish their campuses inBahrain

    Role of Social Work in Responding To Urgent Social Needs for Senior Citizens -Field Study

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    Social work plays a vital role in containing the corona crisis that has affected millions of people during the last years. This study aims to identify how social work services respond to the urgent social needs of senior citizens. The descriptive-analytical approach was adopted with 50 social workers who work at senior citizens centers at Ajman & Al Sharjah Emirates. The study results reveal modifications in senior citizens’ policies and strategic partnerships. Introduction of new high technology instruments for implementing online social work interventions. Health Care mobile unit was suspended, and more emphasis is placed on using sustainable and high-quality medical and social services. Social workers roles have accommodated participation in the implementation and supervision of new initiatives of online club models-Assala, receiving and responding to requests, supervising subsidies, home nursing, and providing social and psychological care. Also, coordination with relevant institutions, executing research work, reports writing, and adopting WhatsApp group, telephone, Zoom, and other intelligent devices

    Proprioception in motor learning: : lessons from a deafferented subject

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    This document is the Accepted Manuscript version of the following article: N. Yousif, J. Cole, J. Rothwell, and J. Diedrichsen, ‘Proprioception in motor learning: lessons from a deafferented subject’, Experimental Brain Research, Vol. 233 (8): 2449-2459, August 2015. The final publication is available at Springer via https://doi.org/10.1007/s00221-015-4315-8.Proprioceptive information arises from a variety of channels, including muscle, tendon, and skin afferents. It tells us where our static limbs are in space and how they are moving. It remains unclear however, how these proprioceptive modes contribute to motor learning. Here, we studied a subject (IW) who has lost large myelinated fibres below the neck and found that he was strongly impaired in sensing the static position of his upper limbs, when passively moved to an unseen location. When making reaching movements however, his ability to discriminate in which direction the trajectory had been diverted was unimpaired. This dissociation allowed us to test the involvement of static and dynamic proprioception in motor learning. We found that IW showed a preserved ability to adapt to force fields when visual feedback was present. He was even sensitive to the exact form of the force perturbation, responding appropriately to a velocity- or position-dependent force after a single perturbation. The ability to adapt to force fields was also preserved when visual feedback about the lateral perturbation of the hand was withdrawn. In this experiment, however, he did not exhibit a form of use-dependent learning, which was evident in the control participants as a drift of the intended direction of the reaching movement in the perturbed direction. This suggests that this form of learning may depend on static position sense at the end of the movement. Our results indicate that dynamic and static proprioception play dissociable roles in motor learning.Peer reviewedFinal Accepted Versio

    Subsynchronous resonance risk assessment in interconnected power systems

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     Series compensation and high voltage direct current (HVDC) links, technically increase the viability of suppling remote areas by long loading transmission lines, or connecting new remote generation hub to the main network. Nowadays such technologies have become part of utilities’ plans to increase power transfer capability between regions. This is usually due to lack of local reserve within a region under system wide contingencies or when there is redundancy of large unscheduled generation (usually in case of extensive wind generation during low demand durations). Both series compensation and HVDC converters excite frequencies below the synchronous frequency of the system called subsynchronous frequencies. These frequencies will be seen as voltage and current components superimposed on the 50 Hz voltage and current signals. These components may excite tortional torque at the adjacent generator causing excessive voltages and currents, and damage to the generator–turbine shaft. Subsynchronous currents or voltages can also be generated in power systems as inter-harmonics emission from a distorting load such as HV high-capacity variable speed drives (VSDs). In other cases, a series resonance between the cables’ capacitance and the transformer’s inductance can occur, resulting in resonant frequency components. Under all these circumstances, there is a risk of SSR conditions. Subsynchronous resonance will become an important network condition to investigate when the new technologies are introduced in power systems. The purpose of this research is to establish understanding of challenges and issues facing the power networks planning, in particular the SSR conditions. The thesis presents key characteristics of power systems and modelling considerations, which need to be taken into account for SSR assessment. Further, a good understanding of the general requirements and criteria for addressing SSR problems is established. Design requirements for HVDC links and series compensation to reduce the risk of SSR are presented. A guide for power system elements representation for simulation studies is established. New modelling and simulation approaches for SSR analysis are proposed to overcome the difficulty of incorporating the discrete nature of the operation of Thyristor Controlled Series Capacitor (TCSC). A computation algorithm for eigenvalue calculation is developed based on Time Frequency Distribution (TFD) concept, by capturing the time variation of a frequency component. The disproportion between the cost of mitigation solution and the cost implication of the risk of low probability condition such as SSR conditions led the utilities to underestimate the risk, thus increasing the system vulnerability to failure. Two context are realised in SSR risk, firstly is the system states probability and the correlation with SSR risk, and secondly the relationship between SSR risk and the system’s operating conditions. The probability weighted cost implication of the SSR risk is estimated and compared with the cost of mitigation measure. This comparison will assist in the economical justification of the countermeasure. It is concluded that it is possible to optimise system’s operating condition to achieve acceptable risk of SSR by quantifying a relationship between system’s constraints and the system’s operating conditions

    Proprioception in motor learning: : lessons from a deafferented subject

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    This document is the Accepted Manuscript version of the following article: N. Yousif, J. Cole, J. Rothwell, and J. Diedrichsen, ‘Proprioception in motor learning: lessons from a deafferented subject’, Experimental Brain Research, Vol. 233 (8): 2449-2459, August 2015. The final publication is available at Springer via https://doi.org/10.1007/s00221-015-4315-8.Proprioceptive information arises from a variety of channels, including muscle, tendon, and skin afferents. It tells us where our static limbs are in space and how they are moving. It remains unclear however, how these proprioceptive modes contribute to motor learning. Here, we studied a subject (IW) who has lost large myelinated fibres below the neck and found that he was strongly impaired in sensing the static position of his upper limbs, when passively moved to an unseen location. When making reaching movements however, his ability to discriminate in which direction the trajectory had been diverted was unimpaired. This dissociation allowed us to test the involvement of static and dynamic proprioception in motor learning. We found that IW showed a preserved ability to adapt to force fields when visual feedback was present. He was even sensitive to the exact form of the force perturbation, responding appropriately to a velocity- or position-dependent force after a single perturbation. The ability to adapt to force fields was also preserved when visual feedback about the lateral perturbation of the hand was withdrawn. In this experiment, however, he did not exhibit a form of use-dependent learning, which was evident in the control participants as a drift of the intended direction of the reaching movement in the perturbed direction. This suggests that this form of learning may depend on static position sense at the end of the movement. Our results indicate that dynamic and static proprioception play dissociable roles in motor learning.Peer reviewedFinal Accepted Versio

    Effect Times Number of Spray and Concentration of Foliar Fertilizer (PIO20) in Growth and Yield of Cucumber Variety Jamila Planted in Plastic Houses Conditions

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    نفذت التجربة خلال الموسم الزراعي 2016 في البيوت البلاستيكية في منطقة العزاوية بمحافظة بابل لدراسة تأثير عدد مرات الرش (رشتان، ثلاث رشات) مع اربعة مستويات للرش بالسماد الورقي PIO20 وهي 0 ،1.5 ،2 ،2.5   مل. لتر1- في نبات الخيار صنف جميلة، طّبقت تجربة عاملية وﻓﻘﴼ لتصميم (C.R.D) بثلاثة مكررات. أوضحت النتائج التفوق المعنوي لمعاملة الرش لثلاث مرات بالسماد الورقيPIO20  على معاملة الرش لمرتين في معدل طول النبات (291.4) سم وعدد الاوراق (36.63) ورقة والوزن الجاف للمجموع الخضري(25.76) غم وطول الثمرة (17.98) سم ووزن الثمرة ((109.27غم وعدد الثمار((11.80 ثمرة. نبات1- وحاصل النبات الواحد ((1.294 كغم . كما أظهرت معاملات الرش الورقي جميعها تفوﻗﴼ معنوﻴﴼ في معدل صفات النمو الخضري والثمري قياﺴﴼ لمعاملة المقارنة.  وبيّنت نتائج التداخل التفوق المعنوي لمعاملة الرش لثلاث مرات عند المستوى 2مل. لتر1- في معدل طول النبات (311.3) سم وعدد الاوراق (40.71) ورقة والوزن الجاف للمجموع الخضري(32.09) غم وطول الثمرة (19.34) سم ووزن الثمرة ((116.06 غم وعدد الثمار((12.97 ثمرة. نبات1- وحاصل النبات الواحد ((1.506 كغم.The experiment was conducted during a season of 2016 in plastic houses at Azawia- Babylon to study effect times number of spray (two times،  three times ) with four levels of spray by foliar nutrition  PIO20 (0 ،1.5 ، 2 ،2.5 ml. liter-1) in cucumber plant c.v. jamila. The experiment was conducted of factorial in design using (C.R.D) with three replicates. Results showed the treatment spray of three times significantly on the treatment spray two times when imported  plant length rate (291.4) cm ,the number of leaves (36.63) leaf and dry weight of the shoot (25.76) gm , fruit long (17.98) cm , fruit weight (109.27) gm and the number of fruits (11.80) fruit.plant-1 and the one plant yield (1.294)kg. the results also showed all the treatment of spray significantly in vegetative growth and fruiting characteristics as compared with control treatment. the results of the interaction the significant superiority of the treatment spray of three times on the level 2 ml. liter-1 plant length rate (311.3) cm ,the number of leaves (40.71) leaf and dry weight of the shoot (32.09) gm , fruit long (19.34) cm , fruit weight (116.06) gm and the number of fruits (12.97) fruit.plant-1 and the one plant yield (1.506)kg

    Customer application protocol for data transfer between embedded processor and microcontroller systems

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    This paper develops a new customer application protocol (CAP) to improve the efficiency of transferring data between embedded processor and microcontroller systems. The established protocol is characterized by its fidelity and simplicity for using a small header to control and monitor the data flow between the two systems. This is achieved by constructing an embedded processor system with an Ethernet intellectual property (IP) core featured by lightweight IP (lwIP) to settle a connection with a microcontroller device. The embedded system is configured on spartan6E FPGAs slice. The system performance is tested by transferring audio samples and displaying them on chipscope media. The performance test of the designed embedded system with the developed customer application protocol showed fast, efficient and high precision data exchange between the processor and microcontroller systems

    The renewable energy potential of the Maltese Islands

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    The potential of renewable energies is presented for the territory of the Republic of Malta. These are in the main sun, wind and biogas. Taking the base year 2003 for comparing the percentage contribution of electricity generated from renewables to that generated from fossil-fuelled power stations, it was found that rooftop solar photovoltaic systems could produce 9.1%, onshore wind farms could offset 5.4% and the offshore wind potential lies in the region of 3.4%. Energy from waste could contribute another 5.6%, while widespread solar water heating in domestic buildings could offset 4.8%. Economic analysis of applying renewable energy power systems under the present constraints is carried out. A range of barriers to the use of renewable energy devices is described. The currently available incentives are listed and a number of measures that could be implemented to allow widespread applications of renewable energies are suggestedpeer-reviewe

    The Incidence of Lymphoma in Children in Gezira State During 2005-2014:A general Population-Based Study

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    Introduction: Lymphomas are the third most often diagnosed malignant neoplasm among children and adolescents. They constitute about 10-15% of childhood malignancies. We aimed to quantify incidence of Lymphomas (HD and NHD) in the Gezira State and their difference with gender and age. Methods: The data was abstracted and classified accordingly to the third revision of the International Classification of Childhood Cancer. Age-standardised rates (ASR) for three 5-year age groups (0–4 years, 5–9 years and 10–14 years) calculated for males and females.  Results: The total number of children diagnosed with lymphoma was 140 patients.     NHL forms 75/140(53%) and HD 65/140(46%). Incidence of NHL was 6.68/million. Males with NHL was 48/75 (64%) with an ASR of 5.71/million and females 27/75(36%) with ASR of 4.04/million and a ratio of 1.7:1. The most common age group of presentation of NHL in males was 5-9 years of age, while in females was from 10-14 years of age. Incidence of HD was 4.22/million. Males constituted about 40/65 (62%) with an ASR of 4.72/million, while females were 25/65(38%) with ASR of 3.72 and males to females ratio of 1.6:1. The common age of presentation of HD in both males and females was 5-9 years of age. In conclusion: The results presented in this study were similar with international results and comparable with them. Implemented analytical studies to clarify the different types of haematological malignancies will help to choose the right treatment and better cure.&nbsp
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