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Antimicrobial Activities of Syzygium aromaticum (L.) Merr. and L.M. Perry (Myrtaceae) Fruit Extracts on Six Standard Microorganisms and Their Clinical Counterpart  [PDF]
Y.-G. Afanyibo, K. Anani, K. Esseh, Y. Sadji, K. Idoh, K. Koudouvo, A. Agbonon, Y. Améyapoh, K. Tozo, M. Gbeassor
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104951
Abstract:
Syzygium aromaticum is used in combination with other plants as an al-coholic infusion by traditional practitioners to treat infections. It has been selected for evaluation for its antimicrobial properties to justify its use in traditional pharmacopoeia. The fruits were used as plant material while the microbial germs consisted of six reference strains: Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 29213, Salmonella typhimurium ATCC 14028, Pseudomonas aeruginosa ATCC 27853, Shigella flexneri ATCC 12022, Candida albicans ATCC 35659 and their clinical counterparts. The extracts were obtained by aqueous decoction, hydroethanolic and ethanolic macerations. The phytochemical screening was performed by chemical staining tests. The antibiotic susceptibility test was performed using the well diffusion method and the MIC and MBC or MFC were determined using the 96-well microplate dilution method. The results showed that 66.67% of the strains tested were sensitive to the aqueous extract with inhibition diameters ranging from 15 to 21 mm and MIC and MCB or MFC between 0.0976 - 0.3906 mg/mL and 0.1953 - 07812 mg/mL respectively, thus determining bacteriostatic activity. 100% of the germs tested were sensitive to hydroethanolic and ethanolic extracts. The inhibition diameters range from 12 - 28 mm for hydroethanolic extract with MIC and MBC or MFC ranging from 0.0488 - 0.3906 mm and 0.0488 - 0.7812 mm respectively. The ethanolic extract gave inhibition diameters of 12 - 26 mm; MIC and MBC or MFC ranging from 0.0976 - 0.7812 mm. Hydroethanolic extract gave three (3) bactericidal/fungicidal activities compared to four (4) as for ethanolic extract. These results prove the use of S. aromaticum among traditional recipes for treating infections in the pharmacopoeia but further studies remain important to produce traditionally improved drugs.
The Constrained Mean-Semivariance Portfolio Optimization Problem with the Support of a Novel Multiobjective Evolutionary Algorithm  [PDF]
K. Liagkouras, K. Metaxiotis
Journal of Software Engineering and Applications (JSEA) , 2013, DOI: 10.4236/jsea.2013.67B005
Abstract:

The paper addresses the constrained mean-semivariance portfolio optimization problem with the support of a novel multi-objective evolutionary algorithm (n-MOEA). The use of semivariance as the risk quantification measure and the real world constraints imposed to the model make the problem difficult to be solved with exact methods. Thanks to the exploratory mechanism, n-MOEA concentrates the search effort where is needed more and provides a well formed efficient frontier with the solutions spread across the whole frontier. We also provide evidence for the robustness of the produced non-dominated solutions by carrying out, out-of-sample testing during both bull and bear market conditions on FTSE-100.

Design of a Cantilever - Type Rotating Bending Fatigue Testing Machine  [PDF]
K. K. Alaneme
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.1011078
Abstract: This research is centered on the design of a low–cost cantilever loading rotating bending fatigue testing machine using locally sourced materials. The design principle was based on the adaptation of the technical theory of bending of elastic beams. Design drawings were produced and components/materials selections were based on functionality, durability, cost and local availability. The major parts of the machine: the machine main frame, the rotating shaft, the bearing and the bearing housing, the specimen clamping system, pulleys, speed counter, electric motor, and dead weights; were fabricated and then assembled following the design specifications. The machine performance was evaluated using test specimens which were machined in conformity with standard procedures. It was observed that the machine has the potentials of generating reliable bending stress – number of cycles data; and the cost of design (171,000 Naira) was lower in comparison to that of rotating bending machines from abroad. Also the machine has the advantages of ease of operation and maintenance, and is safe for use.
FROM THE BOLOGNA DECLARATION IDEAS TO THE CREATION OF COL-LECTIVE INTELLIGENCE В Д ДЕЙ БОЛОНСЬКОЙ ДЕКЛАРАЦ ДО РЕАЛ Й СТВОРЕННЯ КОЛЕКТИВНОГО НТЕЛЕКТУ
K. Метешк?н,Х. Раковський
Information Technologies and Learning Tools , 2010,
Abstract: The results of Bologna process are investigated. It is underlined that theoretical – methodological bases of the Bologna process have been poorly developed. A scheme for master’s education both on requirements of separate states, and on requirements of EU is offered. Досл джуються п дсумки Болонського процесу. П дкреслю ться, що слабко розроблен теоретико-методолог чн основи Болонського процесу. Пропону ться схема навчання маг стр в, як для потреб окремих держав, так для потреб С.
THE FORMING OF NEW METHODOLOGICAL PARADIGM OF EDUCATION AND SCIENCE MANAGEMENT ФОРМУВАННЯ НОВО МЕТОДОЛОГ ЧНО ПАРАДИГМИ УПРАВЛ ННЯ ОСВ ТОЮ НАУКОЮ
Х.В. Раковський,Н.Х. Раковська,K.О. Метешк?н
Information Technologies and Learning Tools , 2010,
Abstract: The process and phenomena connected with the initiation of new methodological paradigm of the scientific and educational management in Ukraine has been investigated. The paradigm is conditioned by global tendencies of informatization, development of communicative means and integrative processes in education and science У статт досл джен процеси та явища, пов’язан з зародженням в Укра н ново методолог чно парадигми управл ння осв тою наукою, яка обумовлена глобальними тенденц ями нформатизац , розвитком комун кац йних засоб в, а також нтеграц йними процесами в осв т та науц .
ДОБ Р КОМП'ЮТЕРНОГО ПРОГРАМНОГО ЗАБЕЗПЕЧЕННЯ ДИСТАНЦ ЙНОГО НАВЧАННЯ ДЛЯ ОРГАН ЗАЦ П СЛЯДИПЛОМНО ОСВ ТИ ВЧИТЕЛ В НФОРМАТИКИ DISTANCE LEARNING COMPUTER SOFTWARE FOR THE ORGANIZATION OF THE POSTGRADUATE EDUCATION FOR INFORMATICS TEACHERS
K.Р. Ковальська
Information Technologies and Learning Tools , 2010,
Abstract: У статт визначено та охарактеризовано основн вимоги до дистанц йних систем, що використовуються для забезпечення потреб навчального процесу; наведено низку безкоштовних систем управл ння навчальними ресурсами; зроблено пор вняльний анал з основних систем для визначення оптимально дистанц йно платформи до розвитку предметно-ор нтовно компетентност вчител в у п слядипломн й педагог чн осв т . The main demands to the distance learning systems which are used for providing the needs of the studying process are defined and characterized in the article. There is also a list of free of charge systems for the management of the educational resources. A comparative analysis of the main systems has been done for determining the optimal distance learning platform for the development of the teachers’ subject-oriented competence in the postgraduate pedagogical education.
DISTANCE LEARNING AS A PERSPECTIVE FORM IN DEVELOPMENT OF SUBJECT-REFERENCE PROFESSIONAL COMPETENCE OF TEACHERS ДИСТАНЦ ЙНЕ НАВЧАННЯ ЯК ПЕРСПЕКТИВНА ФОРМА РОЗВИТКУ ПРЕДМЕТНО-ОР НТОВНИХ ПРОФЕС ЙНИХ КОМПЕТЕНТНОСТЕЙ УЧИТЕЛ В
K.Р. Ковальська
Information Technologies and Learning Tools , 2010,
Abstract: In the article the state and the level of studying of methodological and theoretical bases of distance learning were analyzed and researched; the methodological bases were formed, a list of characteristics was revealed, relevant only to distance learning; a list of advantages and disadvantages of distance learning using for the development of subject-reference competence of information technology teachers was revealed. У статт проанал зовано досл джено стан та р вень вивченост методолог чних теоретичних основ дистанц йного навчання; сформовано методолог чн основи, виявлено низку характеристик, притаманних лише дистанц йному навчанню; виявлено переваги та недол ки застосування дистанц йного навчання до розвитку предметно-ор нтовно компетентност вчител в нформатики.
ПРИЧИНИ НАСЛ ДКИ АСИМЕТР УВАГИ ДО ЗМ СТУ СКЛАДНИХ ПЕДАГОГ ЧНИХ ПОНЯТЬ ТА Х СУПЕРЕЧЛИВИХ ВИЗНАЧЕНЬ CAUSE AND IMPLICATION OF ATTENTION ASYMMETRY TO MAINTENANCE OF DIFFICULT PEDAGOGICAL CONCEPTS AND THEIR CONTRADICTORY DETERMINATIONS
K.В. Корсак
Information Technologies and Learning Tools , 2010,
Abstract: В статт акцентовано на шкоду для модерн зац вищо школи Укра ни використання невдалих терм н в понять, помилок в х визначеннях. Запропонован необх дн зм ни нновац , необх дн для осв тнього технолог чного прогрессу Harm for modernization of the higher education of Ukraine unsuccessful terms and concepts, errors in their definitions is accented. Changes and the innovations necessary for educational and technological progress are offered.
Производительность харвестеров на сплошных рубках
Герасимов Ю. Ю.,Сенькин В. А.,Вяятайнен K.
Resources and Technology , 2012, DOI: 1642
Abstract: При одном и том же размере стволов производительность харвестеров на рубках главного пользования в Финляндии значительно выше, чем на Северо-Западе. Доля времени обработки ствола в эффективном машино-часе (SprocR) для каждого из харвестеров была действительно очень низкой и изменялась в широких пределах от 0,17 до 0,45 со средним значением 0,34. Харвестеры, работающие в Республике Коми, показывают лучшее соотношение, среднеезначение коэффициента SprocR равно 0,35. Размер ствола имеет четкую прямую корреляцию с долей времени обработки ствола в эффективном машино-часе. Особенно это заметно с увеличением среднего размера ствола, так как доля времени обработки ствола SprocR также растет. С точки зрения выполнения операций российские лесозаготовительные компании очень нуждаются в увеличении производительности машин, так как коэффициент использования изученных харвестеров колебался от 0,40 до 0,84 со средним значением 0,60. Эти компании все еще располагают значительным потенциалом более эффективного использования машин, и возможности повышения доли времени обработки ствола для снижения затрат должны быть изучены. Производительность машин может быть увеличена путем повышения доли времени обработки ствола за счет улучшенных методов работы. Результаты исследования показали, что в некоторых лесозаготовительных компаниях рассмотренных регионов производительность харвестеров за 1 эффективный машино-час может быть удвоена. В общем, при увеличении доли времени обработки ствола до уровня ст
Energy and Throughput Optimized, Cluster Based Hierarchical Routing Algorithm for Heterogeneous Wireless Sensor Networks  [PDF]
Mahanth K Gowda, K. K. Shukla
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.45038
Abstract: We propose a novel cluster based distributed routing algorithm in a generalized form for heterogeneous wireless sensor networks. Heterogeneity with respect to number/types of communication interfaces, their data rates and that with respect to energy dissipation model have been exploited for energy and throughput efficiency. The algorithm makes routing assignment optimized for throughput and energy and has a complexity of N/K*logN+k2logk approximately, where N is the number of nodes and k is the number of kcluster heads. Performance experiments confirm the effectiveness of throughput and energy optimizations. The importance of choosing an optimal cluster radius has been shown. The energy consumption in the network scales up well with respect to the network size.
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