611 research outputs found

    Arterial and venous adaptations to short-term handgrip exercise training

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    Four studies on vascular and exercise physiology are presented in this document. The 1st study examined the relationships between measures of fitness and FVF in 55 young [22.6 ± 3.5 years] adults. Estimated VO2peak correlated with arterial inflow (Ainf) [r=0.54; p=0.012] and resting venous outflow (Vout) [r=0.56; p=0.016]. Lastly, HG strength was associated with Vcap [r=0.57; p=0.007] and Vout [r=0.67; p=0.001]. The 2nd study examined the relationship between FVF and exercise tolerance (ExT) in 20 patients with HF [age: 59 ± 13 years] and 10 age-matched controls [age: 51 ± 16 years. The ExT was measured as the maximum walking distance (MWD) in 6 minutes. FVF [Ainf: HF 15.3 ± 6; controls 22 ± 6.7; Vcap: HF 1.4 ± 0.5; controls 2.0 ± 0.4; Vout: HF 24.5 ± 9.4; controls 33 ± 10 mL · 100 mL tissue-1 · min-1; and forearm vascular resistance: HF 7.8 ± 3; controls 4.6 ± 1.4U] indices and MWD [HF: 178 ± 65 m; controls: 562 ± 136m, P = .0001] were different between groups. Correlation analysis revealed significant associations between FVF indices and MWD. The 3rd study examined the effect of 25% (LO) and 75% (HI) of MVC short-term HG exercise training on FVF in 28 healthy men [Age:23±4.3]. The 4-week program consisted of non-dominant HG exercise performed 5 d/wk for 20-min. Training resulted in increased Ainf in the non-dominant arm in the LO and HI groups by 16.51% and 20.72%, respectively. The final study examined the time-course FVF adaptations to HG exercise training in 17 men [Age: 22.6 ± 3.5]. The HG exercise was performed in the non-dominant arm 5 d/wk for 20-min at 60% of MVC. The 2 X 5 ANOVA revealed arms X visits interaction for Ainf [p=0.02], while the LSD post-hoc demonstrated unilateral increase in Ainf following the 1st week. Additional 2 X 5 split-plot ANOVA tests revealed arms X visits interaction [p=0.04] for venous compliance (Vcomp) with LSD post-hoc demonstrating a decrease in trained arm Vcomp in visit 2 followed by an increase in visit 4 and return to baseline level at visit 5

    Iconography and style in the statuary of Ramesses II

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    In conclusion, this thesis concentrates on the iconography and style in the statuary of Ramesses II. The present work has achieved three goals: First, studying Schools (Centers) of sculpture in the statuary of Ramesses II. Second, identifying the sculptures of earlier times usurped by the King. Third, preparing a catalogue containing the statues of the Pharaoh. The present study of Schools (Centers) related to the statuary of Ramesses II, revealed the occurrence of a specific number of workshops in Delta, Luxor and Nubia; these Centers show a large variety of attitudes, styles, dimensions and materials. As a result, the thesis managed to frame a comprehensive and integrated analysis of the repertoire of Ramesses II. Summarizing, the iconographic, anatomic and stylistic features in the statuary of Ramesses II: 1)The bodies of the statues The relatively short torsos of Ramesses II show a schematic treatment: the arms, although well carved, are rather vertical, the shoulders often marked by a now-simplified pattern which looks like an engraved ms sign. The muscle of the forearm (brachio-radialis) is generally shallow; the wrist, in most cases adorned by a bracelet, is either cylindrical or has the styled of the ulna barely suggested. It protrudes only on some examples in Upper Egypt, like the red granite fallen colossus in the Ramesseum Temple. 2)The back slab “ back pillar” The back slab is never found on the colossi of Ramesses II; the later statues in his reign are usually provided with narrow back pillars, round-topped or in some cases, ending in the form of an obelisk. 3)The Ramesside statues’ shape of the legs They are extremely massive. The knee-caps are round or have rounded corners; they are surmounted by a shallow reversed V-shaped muscle, sometimes only engraved. The articulations of the femur are executed in lower relief, and the condyles are placed horizontally; the calves hardly project, if at all .Knees and ankles are extremely broad. The malleali are schematized, the fibula is rendered by two parallel lines engraved along the side of the leg or suggested by thin and slight depressions. 4)The shape of the faces in the sculptures of Ramesses II They are triangular on most of the colossal statues, or else they have a rather compact, round shape, particularly on the statues wearing the round ibes wig; they are never long and rectangular. 5)Headdresses On the majority of the statues of Ramesses II, the king wears the nemes – headdress combined with the double crown, the round ibes wig with double or composite crown, or the double crown without additional coiffures and sometimes the blue crown. On the very few examples where the king wears the white crown, the uraeus is present as is generally the case on New Kingdom royal statues with the white crown. 6)Collars and the Bracelets Collars and the bracelets are usually rendered in relief on Ramesside colossi. 7)The Kilts The type of royal kilt favored since the end of 18th Dynasty was the longer ceremonial pleated kilt with an elaborated sporran. Sndyt, still widely in use, is rather densely pleated on statues of Ramesses II; it is long and its central tab is rather wide. 8)The objects in hands of the statues representing the King The front projections of the handkerchief and its etui are either flat or concave, but never rounded or convex .Furthermore, on most of the colossal statues of Ramesses II this surface was used to display the royal names engraved in ring. 9)The eyes 2 They are almost almond-shaped, with softer inner canthi which dip downwards slightly; the upper eyelids are lowered as if the king looks downward (not only for the colossal statues), a practice in use since Amenophis III and the Amarna Period. 10)The mouth On the Ramesses colossi the mouth is usually curved, the corners often drawn upwards in a faint smile. Even on portraits of Ramesses II with accentuated lower lids, drilled mouth corners, and a chin marked by side furrows, the general expression is serene and lacks the sternness of the Memphis colossus (cat.nos38, 39). Furthermore, even if the drilled mouth corners are original. 11)The ears The ears of Ramesses’ statues are small and in most cases in the statuary originally made for him are pierced. With respect to the usurpations, the study allowed to identify three types of usurpation in the sculptures attributed to Ramesses II: a) The names and epithets of Ramesses II are simply added without erasing the original name of the sovereign or changing the appearance of the statue. b) Removing the titles and names of the original owner of the statue and replacing them with names and epithets of Ramesses II. c) A more or less profound reworking of the statue’s facial features, in addition to changing the style and royal insignia; the original texts being always replaced with new ones (second degree of usurpation). The reasons leading to the choice of one or another of these processes still remain obscure. In many cases, the discussion is still open. In spite of the existence of many schools in the statuary of Ramesses II, there are still several sculptures characterizing all of them.Praca niniejsza, zatytułowana „Ikonografia i styl w rzeźbie pełnej Ramzesa II”, jest pierwszym holistycznym opracowaniem bogatego i ważnego zespołu rzeźb przedstawiających Ramzesa II, w tym również rzeźb grupowych ukazujących go w towarzystwie bogów egipskich. Po przedstawieniu stanu badań, zwracając uwagę na cząstkowość dotychczasowych opracowań i braki dokumentacyjne, autor wyróżnia „szkoły” rzeźbiarskie odpowiadające największym ośrodkom kultury i sztuki poświadczonym w zachowanym materiale z okresu panowania tego władcy. Charakteryzuje specyfikę każdej z nich. Szczególnie istotne jest wyodrębnienie warsztatów dolnoegipskich i nubijskich, jako że dotychczasowe opracowania zdominowane były całkowicie perspektywą tebańską, choćby ze względu na liczebność zabytków i łatwość dostępu do nich. Poza kryterium topograficznym (ośrodki produkcji) w układzie pracy znajduje też odzwierciedlenie kryterium chronologiczne. Rzeźby inskrybowane dla Ramzesa II zostały podzielone na trzy grupy: a) posągi wykonane w okresie panowania władcy; b) posągi wcześniejsze (szczególnie z okresu Średniego i Nowego Państwa) uzurpowane przez Ramzesa II; c) posągi Ramzesa II uzurpowane za panowania władców i dynastii późniejszych. Wypracowane w tych rozdziałach kryteria ikonograficzne i stylistyczne mają służyć egiptologom - archeologom w datowaniu rzeźb anepigraficznych, a także dzieł noszących inskrypcje wtórne, mogące sugerować mylną atrybucję. Rdzeń pracy stanowi katalog 146 posągów, oparty na dokumentacji sporządzonej lub zdobytej przez autora dysertacji drogą wieloletnich studiów przeprowadzanych najczęściej na samych obiektach. Najistotniejszy jest bogaty materiał ilustracyjny, w tym ogrom zdjęć wykonanych przez autora zarówno w Egipcie, jak i w zbiorach europejskich, do których dotarł osobiście. W opisie tych rzeźb zwrócono uwagę szczególnie na te aspekty warsztatu rzeźbiarskiego, które pozostawały niezauważone w dotychczasowych opracowaniach. Opisowi każdej rzeźby towarzyszy pełna bibliografia jej dotychczasowej obecności w literaturze naukowej. Ważną częścią pracy jest bibliografia wszystkich dzieł wykorzystanych w dysertacji. Obejmuje ona prawie 40 stron, a większość cytowanych opracowań pojawia się wielokrotnie w tekście rozprawy

    Effects of Novel Synthetic Nucleosides as Anti-Tumor Agents on Human Acute Promyelocytic Leukemia Cell Line (HL-60)

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    Nucleosides and their analogs are considered a clinically proven class of therapeutic agents possessing anticancer and antiviral activity. Several trifluoromethyl-substituted pyrazole N-nucleosides (coded NIA, NIIA and NIIA) and their nucleobases were synthesized and tested for the ability to induce apoptosis in acute human promyelocytic cell line (HL-60). The growth and proliferation of HL-60 was more effectively inhibited by NIA, NIIA and their nucleobases compared to NIIIA and its nucleobase. In addition, DNA fragmentation was detected in a concentration-dependent manner as a result of nucleosides treatment. A caspase-3-dependent apoptosis was observed based on the Western blot analysis of poly-ADP-ribose polymerase (PARP) and caspase-3. Nucleosides and nucleobases also trigger the release of cytochrome-c from the mitochondria by disruption of mitochondrial membrane potential and ROS formation. Furthermore, the use of zDEVD-fmk (caspase-3 inhibitor) and zLEHD-fmk (caspase-9 inhibitor) resulted in an inhibition of the activity of caspase-3 and 9, accompined with no change in the activity of caspase-8 after the use of zIETD-fmk (casapse-8 inhibitor). These findings implicate the involvement of the caspase-9-dependent mitochondrial pathway. Treatment with nucleosides also resulted in a concentration-dependent upregulation and translocation of the proapoptotic molecule Bax, increased expression of other proapoptotic proteins Bad, Bak, decreased expression of antiapoptotic proteins (i.e. Bcl-2 and Bcl-xL), and enhancement of p53 expression. Moreover, treatment with these agents resulted in accumulation of cells in the G0-G1 phase of the cell cycle, indicating the degradation of the cellular DNA. Interestingly, these nucleosides were found to posses anti-histone deacetyl transferase(s) (HDACs) potential, which is an exciting turn in cancer therapy. This conclusion was based on the observed decease in the expressed level of HDAC-1, -2 and -3. Our results suggest that these novel synthetic nucleosides can induce apoptosis via the mitochondrial pathway, and therefore they could be considered as candidate anti-tumor agents

    Measuring logistics performance in ports: a case of Alexandria in Egypt

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    CRYPTOCURRENCIES IMPLICATIONS AND RISKS ANALYSIS OF BITCOIN

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    학위논문(석사)--서울대학교 대학원 :국제대학원 국제학과(국제지역학전공),2019. 8. Rhee, Yeongseop.국문초록 암호화폐의 문제와 위험/위협 요소 분석 -비트코인 대상으로- 인지 마흐무드 힐르미 아와드 서울대학교 국제대학원 국제학연구소 본 연구는 암호화폐의 요소와 문제가 국제법의 틀 내에서 규제되지 않은 경우 물가와 지불제도의 안정성과 더불어 금융안정에 얼마나 큰 영향을 미칠 수 있는지를 밝히는 데에 목적이 있다. 한편, 본 연구는 이 지불 제도가 가져올 기회와 혜택, 그리고 그것이 투자들에게 호소력이 있다는 점을 받아들인다. 무엇보다도, 본 연구는 범죄자, 사기꾼, 돈세탁하는 사람들에 의해 부정한 행위를 하는 데 이용되어 공권력에 큰 도전이 될 수 있다는 점에서 이러한 제도들을 둘러싼 법적 불확실성을 강조한다. 게다가 본 연구는 15개 국가의 연간 데이터를 이용해 2013-2017 기간 내에 가장 널리 거래되는 암호화폐 '비트코인'의 수요에 영향을 미치는 요인을 분석한다. 본 연구는 2SLS 방법을 이용해 다음과 같은 결론을 내렸다. 첫째, 거래 규모와 시장 변동성과 같은 비트코인 시장과 관련된 시장 요소들이 경제적 정책 불확실성, 무역장벽, 선진국과 개발도상국에게 송금과 상당한 연관성이 있는 것으로 나왔다. 두번째, 이민자의 규모는 전체적으로 무의미한데도 선진국에서 낮은 'P-value'로 나온다. 그래서 경제적 불확실성과 무역 마찰에 대한 인식은 국가 분류에게 영향을 받지 않다는 것을 추론할 수 있으며 전체적으로 의미가 있다는 것으로 간주된다. 한편, 소득 수준, 납세 변수는 비트코인 수요와 관련하는 국가의 분류에 의해 크게 영향을 받는다. 마지막으로 인터넷 사용자의 수, 환율과 같은 변수는 통계적으로 아무 의미가 없는 것으로 나왔다. 주요어: 암호화폐, 비트코인, 보호주의, 무역장벽, 송금, 경제적 불확실성, 비트코인 분석, 비트코인 수요 결정 요인.ABSTRACT CRYPTOCURRENCIES IMPLICATIONS AND RISKS ANALYSIS OF BITCOIN Engy Mahmoud Helmy Awad International Area Studies Graduate School of International Studies Seoul National University This dissertation demonstrates how extensive the risks and implications of crypto-currencies can influence the financial stability along with prices and payment systems stabilities, if not regulated under deterrent international legal framework. In contrast, this paper acknowledges the opportunities and benefits these payment schemes might bring about and how appealing they might be perceived by investors. Moreover it highlights the legal uncertainties surrounding these schemes with respect to challenges they rise to public authorities, as they can be used by criminals, fraudsters and money launderers to perform illegal activities. Furthermore, this paper examines factors that influence the demand for the most commonly traded cryptocurrency Bitcoin over the period 2013-2017 using annual data for fifteen designated countries. The study employs 2SLS technique and documents several findings. First, Bitcoin market-related factors such as econometric Beta, trading volume, and volatility appear to be significantly correlated to economic policies uncertainties, trade Barriers and remittance transfers for both developed and developing countries. Second, international migrants stock appears with lower P-value in developed countries despite its overall insignificance. This indicates that; recognition of the economic uncertainties and trade frictions are not influenced by countries classification division and will hold their significance throughout. On the other hand, income level and tax payments variables are highly influenced by the countrys classification when it comes to Bitcoin demand. Finally variables like number of internet users and exchange rates hold strong evidence of statistical insignificance with high likelihood of accepting the null hypothesis. Keywords: Cryptocurrency, Bitcoin, Protectionism, trade barriers, remittance transfers, economic uncertainty, Bitcoin Analysis, Bitcoin demand determinants.Table of Contents 1.1 Background of the study 1 1.2 Chapters outlines: 1 1.3 Crypto-currencies and Bitcoin: 3 1.4 Historical Timeline: 5 1.5 Objective of the study 7 1.6 Research question 8 1.7 Significance of the study 8 1.8 Methodology 8 1.9 Literature review: 9 CHAPTER TWO: RISKS AND IMPLICATIOSNS 14 2.1 Traditional theories of money 14 2.2 Virtual currencies creation and adoption: 16 2.3 Differences between fiat currency and virtual currency 18 2.4 Advantages of cryptocurrency: 19 2.5 Disadvantages of cryptocurrency: 22 2.6 Security implications of cryptocurrency: 23 2.7 Risks and implications of crypto-currencies: 24 2.7.1 Risks to price stability: 25 2.7.2 Risks to Financial stability: 26 2.7.3 Risks to Payment system stability 27 2.7.4 Lack of Prudential supervision: 28 2.8 Mitigating Crypto-currencies risks: 29 CHAPTER THREE: DETERMINANTS OF BITCOIN DEMAND 32 3.1 Introduction: 32 3.2 Methodology used: 33 3.3 Research design: 34 3.4 Data collection: 35 3.5 Data and variables: 35 3.6 Main drivers for the Bitcoin price index: 35 3.7 Variables affecting the demand for Crypto currencies: 37 3.7.1 Globalization and ICT advancements: 38 3.7.2 Personal remittances: 39 3.7.3 Rising protectionism against hyperglobalization and Bitcoin: 39 3.7.4 Economic policy uncertainty: 43 3.7.5 Quality of human capital: 44 3.7.6 Taxation, market regulations and money transfer charges: 45 3.7.7 Stock market: 46 CHAPTER FOUR: FINDINGS, DATA ANALYSIS AND INTERPRETATION 47 4.1 Introduction: 47 4.2 Descriptive statistics: 47 4.3 Data Variables: 48 4.3.1 Dependent variable: 48 4.3.2 Independent variables: 49 4.3.3 Control variables: 50 4.4 correlation matrix results: 51 4.5 Regression analysis: 52 4.5.1 Anva section: 52 4.5.2 Regression formula: 53 4.5.3 Regression results interpretation: 53 4.5.4 Sum of residuals of the regression analysis: 55 4.5.5 Partial and semi-partial correlations: 56 4.6 Two-Stage least squares (2SLS) regression analysis: 57 4.7 Omitted-variables bias: 59 4.8 Developed vs Developing countries: 61 4.9 Conclusion: 62 CHAPTER FIVE: CONCLUSION AND RECOMMENDATIONS 63 5.1 Introduction: 63 5.2 Empirical findings summary and answering the research questions: 63 5.3 Policy implications: 65 5.4 Limitations of the study and recommendations for future studies: 65 5.5 Conclusion: 66 References 68 국문초록 74Maste

    Integrating Environmental Control and Architectural Design: A Coordinated Teaching Framework that uses multiple Strategies to enhance student skills

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    This paper aimed at formulating a teaching framework for environmental control to develop students\u27 skills. It emphasizes the importance of multiple strategies into architectural education and proposes a coordinated approach between three courses’: environmental control, Islamic architecture history, and architectural design. It reviews pedagogical approaches in architectural education to design a framework to environmental control. That framework achieves the course outcomes for the higher education ministry syllabus and goes in line with both Egyptian and American quality standards. The framework involves several activities, including lectures that introduce the theoretical background, construction of physical models, teamwork presentations, use of simulation software, usage of laboratory equipment, and visits to distinctive buildings. The framework was implemented on second-year architecture students in two different Egyptian schools: the Architecture Department at Nile Higher Institute, Mansoura, and the Architecture Department at Higher Technological Institute, 10th of Ramadan City.The framework evaluation implementation was carried in several ways: direct assessment through the analysis of student learning outcomes assessment scores, and indirect assessment through a student questionnaire. Closed-ended answers were analyzed quantitively, and open-ended answers were analyzed qualitatively. Feedback was taken from instructors. The results were discussed twice. Once the department council meeting, the second was with a board consisting of industry representatives, students, and alumnus. The results were used to adjust the new framework. The findings provide insights for educators. It suggests that the framework could be adapted in other education settings, and further research could investigate the long-term impact on students\u27 professional practice

    Integrating Environmental Control and Architectural Design: A Coordinated Teaching Framework that uses multiple Strategies to enhance student skills

    Get PDF
    This paper aimed at formulating a teaching framework for environmental control to develop students\u27 skills. It emphasizes the importance of multiple strategies into architectural education and proposes a coordinated approach between three courses’: environmental control, Islamic architecture history, and architectural design. It reviews pedagogical approaches in architectural education to design a framework to environmental control. That framework achieves the course outcomes for the higher education ministry syllabus and goes in line with both Egyptian and American quality standards. The framework involves several activities, including lectures that introduce the theoretical background, construction of physical models, teamwork presentations, use of simulation software, usage of laboratory equipment, and visits to distinctive buildings. The framework was implemented on second-year architecture students in two different Egyptian schools: the Architecture Department at Nile Higher Institute, Mansoura, and the Architecture Department at Higher Technological Institute, 10th of Ramadan City.The framework evaluation implementation was carried in several ways: direct assessment through the analysis of student learning outcomes assessment scores, and indirect assessment through a student questionnaire. Closed-ended answers were analyzed quantitively, and open-ended answers were analyzed qualitatively. Feedback was taken from instructors. The results were discussed twice. Once the department council meeting, the second was with a board consisting of industry representatives, students, and alumnus. The results were used to adjust the new framework. The findings provide insights for educators. It suggests that the framework could be adapted in other education settings, and further research could investigate the long-term impact on students\u27 professional practice

    Disseminating Training Courses Information Using SMS

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    In these days most media acknowledge the importance of SMS news and web in reaching and interacting with their users. However, there is much discussion regarding the effectiveness when it comes to SMS news. This project to help the students and staff prepared to accept, reading using SMS messages: effective is SMS news compared to traditional news communications. The goal of this study is to investigate the use of SMS news compared to traditional ways distribute in news in different aspects and on the other hand, to develop prototype by using web and SMS technology to apply this system and extent users are willing to accept commercial messages on their mobile phone, since the effectiveness of SMS news highly depends on this willing. The results of this project indicate that the use of the web and SMS for the benefit of disseminating UTLC center training Courses information by extending web technology to SMS using WLAN for students and staff

    Designing games for older adults: an affordance based approach

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