333 research outputs found

    Project Selection in Facility and Infrastructure Maintenance Organizations

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    The current Air Force Civil Engineer Center (AFCEC) built infrastructure Facility Sustainment Restoration and Modernization (FSRM) portfolio management methodology results in an unbalanced project portfolio. The consequence of this unbalance is that majority of the funding goes towards buildings on the flightline and Facility Support Services activities do not get adequate funding which leads to further deterioration of those facilities. This research investigates whether decision support framework based on Value-Focused Thinking (VFT) process yields better project selection outcomes for facility and infrastructure maintenance organizations. To accomplish that, the investigation focuses on understanding current AFCEC decision support methodology, building an alternative one based on VFT process, and then applying the result to a sampling of projects. Findings of the investigation prove that the VFT process yields a decision support framework that successfully balances FSRM project portfolio by ranking the projects based on their level of contribution to decision-maker’s values affecting facility and infrastructure maintenance organizations

    Improvement of the paradigm of service

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    Now science about service as the modern type of service, is at a stage of evolutionary development. Therefore, there are numerous views concerning their essence and mechanisms. We, in this work considered some modern views about concepts service, attempt to give new definitions of concepts service, serving and service is mad

    New Technologies of Matrix Composite Polymer Photovoltaic and Photoresistive Materials

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    The goal of the paper is development of more effective technology formation photovoltaic and photoresistive elements based on the polar and nonpolar polymers dispersed by CdS, ZnS, CdSe and CdTl particles. It was established that: 1. The interphase interaction in photoelectric composites on the interphase boundary is considerably depended on particle size of inorganic phase; 2. Polymer matrix is not passive phase in photoelectric composites, but defines a value of Rdark resistance/Rlight resistance parameter and value of photo-emf; 3. 3. Plasma crystallization of photoelectric composites is accompanied by formation of local levels with high concentration and activation energy in quasi-forbidden band of polymer matrix; 4. Doping of ferroelectric component with domain structure into photoelectric composite of polymer-CdS leads to increasing concentration of centers of local electric fields promoted division of photoinduced charges

    Methods for Producing High-Temperature Superconductors

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    This paper presents technologies for obtaining high-temperature superconducting materials

    Pathomorphological Changes in Poultry Pasteurellios, Pullorosis and Colibacteriosis Diseases

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    The organism of chicken infected with individual pathogens exhibits relatively simple patho-anatomical modifications in the presence of two or three separate bacterial pathogens. Because it is highly challenging to differentiate between mixed bacterial infections based just on clinical symptoms, pathologoanatomical examination and distinction are preferred. These disorders will be accurately diagnosed promptly and without delay if the pathologo-anatomical investigations are properly examined, and preventive measures will be consistently applied

    RESEARCH OF THERMAL STATUS OF THREADING ZONE WITH THE HELP OF FULL FACTOR EXPERIMENT

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    Thermal processing zone status when threading in heatproof, high-strength and titanium alloys is a major problem in the general theory of metal cutting. Under other equal conditions temperature in the processing zone of these materials is higher than in cutting of carbon structural steels, as they have high strength and ductility, low thermal conductivity, that makes difficult the working conditions of the taps, increases the area of the tool contact with the workpiece, deteriorates lubrication and cooling of the cutting area because of the increased tendency of heatresistant materials for the curing. This causes an increase in the work and force of friction and as a consequence the rise of cutting temperature. Research of temperature state of the threaded coils formation zone with combined countersink tool-tap is one of the major challenges facing the authors of this work. When performing the work was used factorial experiment. The temperature in the cutting zone of the thread was determined by a built-in chromel-aluminum thermocouple with thermoelectrode cross-sectional area 0,23mm2 . Experiments were carried out using the apparatus of mathematical statistics. Studies have shown that the greatest impact on the temperature state of the cutting area has a tensile strength of the material. Effect of cutting speed in the studied variation range is relatively less noticeable. The explanation for this is a special scheme of cutting of combined countersink tap which allows significantly improve conditions in the cutting zone. The proposed design of the tap allows to reduce the temperature in the area of tapping for 20%

    Results of Off-Pump Coronary Artery Bypass Surgery in Patients with EuroSCORE≥5

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    Background: The lack of reliable data on the possibility, safety and results of OPCABG in patients with high surgical risk hinders the further wide introduction into clinical practice of such operations. In this regard, conducting a comparative evaluation of the results of OPCABG in patients with low and high surgical risk seems to us a worthwhile project. Materials and Methods: During the period between 2015 and 2017, 310 OPCABG operations were performed. Patients were divided into 2 groups depending on the EuroSCORE risk calculator value. Group 1 consisted of 130(41.9%) patients with a high surgical risk (EuroSCORE≥5), and Group 2 consisted of 180(58.1%) patients with a low surgical risk (EuroSCORE<5). Results: We could not find between the two groups significant differences in the number of mean grafts per patients (3.12 in Group 1 and 3.13 in Group 2), in operation times, or in the level of morbidity and mortality (1.5% in Group 1 and 1.2% in Group 2). All intraoperative conversions to on-pump CABG (5 cases or 3.8%) occurred in patients of Group 1 (P=0.008). Conclusion: The OPCABG operation in patients of high-risk group is a safe method and can be performed without compromising the completeness of myocardial revascularization with the same low mortality as in low-risk patients. The most common type of complication in high-risk patients is on-pump conversion, which at earlier and planned implementation is not reflected significantly at the level of hospital mortality

    STUDENT ATTITUDE TO DEMOGRAPHIC SITUATION IN RUSSIA

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    Purpose of the study: Since the new generation is the main entity of material and social benefits’ renewal process of any state, the article aims to identify the students’ attitude to the demographic situation in Russia. It is the younger generation of different age groups that is the main labor unit of the state population. Relevant is the fact that the issues of demography are a global challenge of self-organizing society.&nbsp; The purpose of the article is to identify the students’ attitude to the demographic situation in Russia, as well as to consider various models of reproductive behavior. Methodology: The leading methods for the study of this problem is the survey method, which allows to make a qualitative analysis of the characteristics of the students’ attitude to the demographic situation in Russia and to establish the subjective position of students regarding demographic development. Results: The article reveals that the following administrative and legal measures contribute to the improvement of the demographic situation in the country (legislative acts regulating the marriage age, divorce, attitude to abortion and contraception, the status of mother and children in the divorce, working women’s labor regime); economic measures (paid leave, various benefits at child’s birth, preferential credit conditions if necessary, tax and housing benefits); educational measures (formation of public opinion, the core and standards of demographic behavior, determination of attitude to religious norms, traditions and customs, family planning policy, sexual education of youth). The authors established a high level of awareness of students about the demographic situation in the country; the presence of anxiety about this situation. Applications of this study: The data obtained in the work can be used in sociology, social psychology, political science, as well as for further theoretical development of this issue. Novelty/Originality of this study: The study revealed a high level of awareness of young people about the demographic situation in the country, certain anxiety about this situation. However, young people are not in a hurry to participate in the solution of demographic problems, referring mainly to the difficulties of material nature. This indicates the need for more careful consideration of measures of state support for young families, taking into account the research of their opinion on this matter

    ЭФФЕКТИВНОСТЬ ИСПОЛЬЗОВАНИЯ ВЫСОКОБЕЛКОВЫХ КОРМОВЫХ ДОБАВОК В РАЦИОНАХ КОРОВ

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    In the Republic of Tajikistan, linseeds, cotton seeds and rape seeds are used for producing vegetable oil. The authors highlight that until now the impact of cotton, linseed and rapeseed cake, which are seen as high-protein feed additives, on the dairy productivity, composition and properties of milk are not sufficiently investigated for the conditions of the country. The paper highlights the results of two scientific and economic experiments on investigation of the impact caused by cotton, linseed and rapeseed cake on the milk productivity, quality and physical and chemical parameters of milk of highproductive cows of the Black-and-WhiteTajik type breed. The researchers found out that application of various seed cakes when feeding cows in DIM increases the milk yield and improves the quality and physical and chemical parameters of milk. The authors observed experimental cows which received different types of seed cake and the milk their produced and found out that experimental cows exceeded 5.9-12.3 % according to the parameters of milk of natural fat; 4% milk - on 12.0-17.9 %. The cows from experimental groups produced 6.55-11.51 kg milk fat more. Feed costs in energetic feed unit pro 1 kg of 4-% -milk were 7.7-15.2% lower in the experimental groups of cows in comparison with the control group. According to organoleptic and sanitary-hygienic parameters, the milk produced by the cows from experimental groups was of higher quality and fulfilled the requirements of the state standard for purchased milk. Fat concentration increased on0.08-0.19%; total protein - on 0.07-0.15, dry skimmed milk residue - on 0.07-0.16 and dry matter - on 0.15-0.35%. According to the chemical composition, the milk produced by cows, which were fed with linseed cake was the best one. The content of milk sugar, ash, calcium and phosphorus was approximately the same in all the groups. The cost of 1 centner of milk in the experimental groups was 6.3-12.7% lower, and the profitability level of milk production was 9.8-16.3% higher in comparison with the control groups.В Республике Таджикистан для производства растительного масла наряду с семенами хлопчатника используют семена льна и рапса. Однако до настоящего времени в условиях республики вопросы влияния хлопчатникового, льняного и рапсового жмыхов, которые являются высокобелковыми кормовыми добавками, на молочную продуктивность, состав и свойства молока коров остаются не изученными. В данной статье изложены результаты двух научно-хозяйственных опытов по изучению влияния хлопчатникового, льняного и рапсового жмыхов на молочную продуктивность, качество и физико-химические показатели молока высокопродуктивных коров таджикского типа черно-пестрой породы. Установлено, что использование различных жмыхов в кормлении коров в период раздоя повышает молочность коров, улучшает качество и физико-химические показатели молока. По удою молока натуральной жирности опытные группы коров, получавшие различные виды жмыха, превосходили контрольных на 5,9–12,3, а по удою 4%-го молока – на 12,0–17,9%. От коров опытных групп получено на 6,55–11,51 кг больше молочного жира. Затраты кормов в ЭКЕ на 1 кг молока 4-%-й жирности в опытных группах коров были на 7,7–15,2% ниже по сравнению с контролем. По органолептическим и санитарно-гигиеническим показателям молоко, полученное от коров опытных групп, было высшего сорта и отвечало требованиям государственного стандарта на закупаемое молоко. Содержание жира увеличилось на 0,08–0,19%, общего белка – на 0,07–0,15, сухого обезжиренного молочного остатка – на 0,07–0,16, сухого вещества – на 0,15–0,35%. По химическому составу наилучшим оказалось молоко коров, которым скармливали льняной жмых. Примерно одинаковым во всех группах было содержание молочного сахара, золы, кальция, фосфора. Себестоимость 1 ц молока в опытных группах была на 6,3–12,7% ниже, а уровень рентабельности производства молока – на 9,8–16,3% выше по сравнению с контрольными группами

    Remote Prophylaxis of Social and Educational Adaptation of University International Entrants in Total Pandemic

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    The relevance of the study is due to the trends of the global pandemic, which provoked an extremal transition of all areas of higher education to distance learning, as the only possible way to work with domestic and international entrants and students. In addition, the trends of the pandemic in the current educational environment also determine the special need to develop remote mechanisms for a prophylaxis approach to solving the problems of social and educational adaptation of international entrants – future University students. In this regard, this article is aimed at identifying the features of remote prophylaxis of social and educational adaptation of entrants. The article reveals the transformation of social and educational adaptation of international entrants in the global pandemic; defines the structure and content of remote prophylaxis of social and educational adaptation of international University entrants in the global pandemic. Based on the results of the research, the authors of the article substantiate the prophylaxis model of the educational and software complex for remote prophylaxis of social and educational adaptation of University international entrants. The effectiveness of the model is proved by the results of its use in the process of remote social and educational adaptation of University international entrants in the context of a global pandemic. The materials of the article have practical application and can be useful in the development and implementation of various methods and practices of social and educational adaptation of international entrants – future University students in the context of a global pandemic. It is recommended for University teachers and students, methodologists, curators, Tutors
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