3,809 research outputs found
Synchrophasors\u27 Application in SVC for Industrial Networks
It is widely understood that as fuel and energy prices continue to increase, new and innovative ways of becoming more energy efficient will be required. This couldn\u27t be more apparent than in industry, where every decision is constrained by economics. Power factor correction is a cost effective way for industry to have economically sound improvements with maximum efficiency benefits. It is proposed that in large industrial systems, where an SVC (Static Var Control) system could be used, synchrophasor measurements could also be used to control the SVC and provide enhanced historical analysis. Currently, many protective relays used in industry provided by SEL (Schweitzer Engineering Laboratories) already have this capability built-in. While synchrophasor measurement technology is still relatively unknown, they are a powerful tool that could greatly increase power system control, efficiency and historical data analysi
A curriculum of civic responsibility : transitioning Black American students to college-level writing.
This dissertation considers how racialized differences educational experience transition with Black students as they perform the expectations of college writing curriculum. I address the question: in what ways can a first-year writing curriculum centered on civic responsibility aid in smoother transitions from secondary to postsecondary academic writing for Black students at predominantly White institutions? My study applies racial and critical race methodologies framed within the tenets of critical race theory, institutional whiteness, and the absent presence of race in composition studies. I apply the methodologies in three key ways: analyzing transition practices through racialized perspectives; evaluating general education writing curriculum through institutional whiteness; and examining the rhetorical education and writing education experiences of transitioning Black American students today and historically. Through these approaches, I argue that, due to its focus on academic writing as one resource for influencing community development, applying a curriculum of civic responsibility to first-year writing courses can effectively address Black students\u27 complexities in transitioning to college-level writing at predominantly White institutions. The dissertation includes five chapters. Chapter One reviews scholarship on race and academic writing, transitioning from secondary to post-secondary writing, and community-based writing pedagogy. Extending from that review, Chapter Two uses the critical race theory principle of counter-story, or the unique voice of color, to review historical models of Black American-centric education from the Civil Rights era. Chapter Three presents the results of an institutional analysis I conducted of the policies and curriculum designed for transitioning students at one institution. Chapter Four demonstrates the need for race-consciousness and civically responsible curriculum by discussing the qualitative interview responses of nine Black American students at the aforementioned research university. I conclude the dissertation by exemplifying the potential for a writing curriculum of civic responsibility entails at both the program level and course level. For Black American students living in a society with a racial social system built on whiteness as most desired and blackness as most disgraced, teaching academic writing practices as one of many resources to build communities can prove critical in helping Black American students transition to academic writing at the college level
A COMPARISON OF TWO METHODS FOR REDUCING TEST-ANXIETY AND IMPROVING ACADEMIC PERFORMANCE
This study examined the effectiveness of cognitive behavioral therapy (CBT) and study skills training (SST) in reducing test-anxiety and improving academic performance. Eighty one high test-anxious male students in the tenth grade were randomly assigned to three groups: CBT, SST and waiting-list control (WLC). CBT aimed to help participants become aware of the anxiety-producing self-statements they emitted both before and during exams, and to train them to develop positive self-statements that would facilitate task attending; whereas SST aimed to teach participants the skills necessary for effective learning, namely SQ3R method of studying, techniques of time management, note-taking methods, test preparation techniques and test-taking techniques. All participants receiving treatment met for a total of six 50-minute treatment sessions spanning over six weeks. The data was analyzed using one-way ANOVA and one way MANOVA. The results indicated that both treatment groups made significant improvements from pretest to posttest in test-anxiety when compared to the WLC group. However, only the CBT group was superior to the WLC group in improving academic performance. Overall, the results were interpreted as giving support to the interference model of the debilitating effect of anxiety on performance
GENDER DIFFERENCES IN BULLYING AND VICTIMIZATION AMONG EARLY ADOLESCENTS IN JORDAN
This study investigated gender differences in bullying and victimization among Jordanian early adolescents. The sample consisted of 330 students (162 males, 168 females) in the seventh and eighth grades. These students were randomly selected from six public schools. Two scales were used, one for bullying and the other for victimization, each of which composed of ten items. Results of independent samples t-tests indicated that males had significantly higher scores than females on each of the two scales. Furthermore, chi-square tests showed that males were more involved in bullying than females across bullying groups. There were also significant differences in terms of the locations of bullying. For boys, bullying most often occurs on the way home from school; while for girls, bullying often occurs in the classrooms. It was found that "hitting or pushing other students" is the most common form of bullying used by adolescent male bullies, and that "calling other students with bad names" is the most common form of bullying used by adolescent female bullies
Test anxiety in Jordanian students : measurement, correlates and treatment
Psychometric properties of the Differential Test
Anxiety Inventory (DAI), and a comparison of cognitive therapy
and study skills counseling in the treatment of test
anxiety
Cr2O3:TiO2 Nanostructure Thin Film Prepared by Pulsed Laser Deposition Technique as NO2 Gas Sensor
تم استخدام تقنية الترسيب بالليزر النبضيPLD)) لتحضير أغشية رقيقة لأوكسيد الكروم (Cr2O3) المطعم بأوكسيد التيتانيوم ((TiO2 النانوية التركيب وبنسب تركيز مختلفة (9,7,5,3)% من أوكسيد التيتانيوم .لقد تمت دراسة تأثير نسب التطعيم لأوكسيد التيتانيوم في معدل الحجم البلوري للبنية التركيبية النانوية والتي تم فحصها باستخدام جهاز حيود الاشعة السينية(XRD) وطبوغرافية السطح تم مناقشتها باستخدام جهاز مجهر القوة الذرية (AFM).وقد لوحظ ان قيم فجوة الطاقة البصرية تتراوح بين (2,68الى 2,55) الكترون- فولت باستخدام مطياف امتصاص الاشعة (ضوء مرئي- فوق بنفسجية ) وكانت تنزاح بشدة نحو طيف الطول الموجي الاطول عند مقارنها مع اوكسيد الكروم (3 الكترون- فولت) وهذا يوضح ان البنية التركيبية للعينات كانت تعزز التأثير الكمي. أيضا تمت دراسة ومناقشة تحسسية الغاز وزمن الاستجابة للمتحسس بوجود غاز أوكسيد النيتروجين (NO2). وفي هذا البحث وجدنا ان التحسسية تزداد عند زيادة نسبة التطعيم من ( 3 الى 5) % ثم تعود تتناقص فوق ذلك .افضل نسبة تركيز لأوكسيد التيتانيوم لكي نتحسس غاز NO2 كانت عند نسبة تطعيم 5% وقد ظهر ان مقدار التحسسية كانت تساوي168,75 % وزمن الاستجابة 23 ثانية عند درجة حرارة 200 سيليزي .Pulsed laser deposition (PLD) technique was applied to prepared Chromium oxide (Cr2O3) nanostructure doped with Titanium oxide (TiO2) thin films at different concentration ratios 3,5,7 and 9 wt % of TiO2. The effect of TiO2 dopant on the average size of crystallite of the synthesized nanostructures was examined by X-ray diffraction. The morphological properties were discussed using atomic force microscopy(AFM). Observed optical band gap value ranged from 2.68 eV to 2.55 eV by ultraviolet visible(UV-Vis.) absorption spectroscopy with longer wave length shifted in comparison with that of the bulk Cr2O3 ~3eV. This indicated that the synthesized samples are attributed to the enhancement of the quantum confinement effect. Gas response sensitivity, and recovery times of the sensor in the presence of NO2 gas were studied and discussed. In this work it is found that, the sensitivity increases when doping ratio increases from 3wt% to 5wt% of TiO2 and return to decrease over that. The optimum concentrations ratio for NO2 gas sensitivity is 5wt% of TiO2 and sensitivity is 168.75% at 200oC. 
Employment Security in Egypt in Light of the COVID-19 Pandemic: Rethinking Policies and Practices
Crises such as COVID-19’s have inequitable impacts on different countries, various population groups and diverse sectors of society and the economy. Areas of work and employment were met with a lot of challenges worldwide, and in particular in countries like Egypt with a large sector of vulnerable and precarious workers. This policy paper addresses the question of employment security both in response to crises such as COVID-19, and on the long term. To do so, the research maps ‘vulnerable work’, including informal labor, labor in the gig economy, self-employed and other types of precarious work. It then assesses Egypt’s policy responses to COVID-19 with regards to the issues of unemployment and informal labor, including by assessing the efficacy of the irregular workers’ fund and the diverse methods used to finance the crisis.
Although some of those responses were in the right direction, their shortcomings revealed much deeper structural obstacles within employment relations and existing labor market vulnerabilities. This research thus provides policy recommendations, both on the short term in response to the crisis, as well as longer term to address vulnerability and precariousness in the world of employment in Egypt
Synthesis and Characterization of Naphthalenediimide-Functionalized Flavin Derivatives
Two acceptor–acceptor dyads have been synthesized featuring a flavin moiety and a naphthalenediimide (NDI) unit. The NDI unit is linked to the flavin through a short spacer group via either the N(3) or N(10) positions of the flavin. We have investigated the UV-Vis and redox properties of these multi-electron accepting systems which indicate that these materials display the collective properties of their component systems. Fluorescence spectroscopy measurements have revealed that their emission properties are dominated by the flavin unit
Adding a Strategic Lens to Feasibility Analysis
Purpose – Traditional feasibility analysis is focused on the immediate and urgent needs of a new venture start-up. All four parts of the feasibility analysis (product/service, industry/market, organizational, and financial) are valuable and essential, but what is missed is a part that provided attention to the longer-term requirements for success and sustainability. A fifth strategic feasibility analysis is needed, focused on the long-term sustainability of the new venture. This strategic/contingent context-dependency lens considers the organization’s long-term survival, confirming that organizational success depends on the new venture’s ability to emphasize its uniqueness and fit with its external environment. Design/methodology/approach – This paper takes advantage of the decades-long literature review in Strategy to combine known data with entrepreneurial practice in undertaking the feasibility analysis. Findings – This enhanced feasibility analysis adds a strategic lens beyond the traditional four-part feasibility analysis, resulting in identifiable value-added benefits and awareness of potential opportunities or threats in the longer term. Research limitations/implications – This research is conceptual and theoretical at this point, without field implementation. Practical implications – New venture failure is an ongoing concern for many. This suggested strategic lens, especially the sustainability aspect (beyond the “what-do-we-need-to-do-to-open-the-doors” of much feasibility analysis) may prove very useful. Competitive advantage is examined in the traditional feasibility analysis, but this strategic lens suggests a longer term examination, and engages with competitor response. Social implications – If adopted, this enhanced analysis may lead to greater success for new venture startups, thus less wasted time, energy and money. Originality/value – This is the first attempt at adding a focused strategic lens to the traditional entrepreneurial feasibility analysis. This may seem like a simple and elementary shift of perspective, but the implications are huge, and take advantage of the decades-long research stream in strategic thinking and planning
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