10 research outputs found
The Structural Organization of the Event Space of the Time Perspective of the Personality of the Combatants
No full textThe work is aimed at studying the structural organization of the event space of the time perspective of the personality of the combatants. The materials of an empirical study obtained on a sample of male combatants with manifestations of post-traumatic stress disorder are presented. The study involved respondents aged 20-53 years (32.5±8.94 years). The criteria for inclusion in the research group were the presence of mine-explosive and gunshot injuries, as well as normative cognitive status (29-30 points on the MMSE scale). The study was carried out using the following methods: the Mississippi scale for assessing post-traumatic reactions (military version), the method of event-based reconstruction of a person’s temporal perspective (Nikishina V.B., Petrash E.A.), the hospital scale of anxiety and depression (HADS), the method of detecting suicidal tendencies (CP-45) by P.I. Yunatskevich. As a result of the study of the structural organization of the event space of participants in hostilities with a high level of severity of manifestations of PTSD, a significant narrowing of the size of the present and future, the size of the event space as a whole, the disintegration of the event space of the present and future, as well as a decrease in the chronological length of the time perspective of the individual was revealed.</p
Interference Features of Auditory Memorization in Traumatic Experiences (for Example, Amputation of Lower Limbs)
No full textThe article presents an analysis of the results of a study of the interference of auditory memorization in traumatic experience (traumatic and non-traumatic amputation of the lower limbs). The effectiveness of processes of auditory and visual memorization in conditions of interference was analyzed. As a result of the study, the effectiveness of the process of memorizing auditory and visual information in the conditions of interference was reduced. It is definitely established that the effectiveness of the memorization process with amputation of the lower extremities is influenced by the semantic content of the interfering information. The cause of amputation (trauma or complication of prolonged chronic somatic disease) does not affect the processes of auditory and visual memory in conditions of interfering effects.</jats:p
O parlamento das técnicas e dos homens: um estudo sobre as redefinições do trabalho numa indústria da Zona Franca de Manaus
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro tecnológico. Programa de Pós-Graduação em Engenharia de ProduçãoA tese intitulada "O Parlamento das Técnicas e dos Homens. Um estudo sobre as redefinições do trabalho numa indústria da Zona Franca de Manaus" investiga as redefinições do trabalho e os novos espaços de conhecimento emergentes no contexto do atual avanço científico e tecnológico através da conceituação, organização e desenvolvimento cognitivo do agente humano na planta produtiva enquanto mediada por novos atores tecnológicos como a tecnologia digital. Adota-se como horizonte de análise a identificação dos novos espaços teórico-práticos de formação do homem como perspectiva de alargamento da compreensão e prática dos processos cognitivos humanos no trabalho
Heat supply based on thermotransformed energy of stabilizing cooling of the furnace and supercooling of coolant of low–potential sources
No full textВ статье представлены исследования совместной работы отопления и горячего водоснабжения. Установлено, что эффективность системы возрастает с увеличением расхода теплоносителя на горячее водоснабжение, а также при снижении температуры теплоносителя в системе отопления. Аналитическим способом установлено для системы с доохлаждением рациональное сочетание исходных и режимных условий, которое в системе анализируемой структуры обеспечивает оптималное значение коэффициента преобразования.The article presents a study of the joint work of heating and hot water. It has been established that the efficiency of the system increases with an increase in the coolant flow rate for hot water supply, as well as with a decrease in the coolant temperature in the heating system. Analytically, a rational combination of initial and regime conditions is established for a system with subcooling, which in the system of the analyzed structure provides the optimal value of the conversion coefficient
Design, control and management of renewable energy plants and technologies
No full textNowadays, and even more in the next decades, the availability and easy-access to energy sources represent a crucial asset for the world development and the progress of people and nations. At the same time, the depletion of natural resources, together with the increase of the anthropic activity impact on the Earth ecosystem and climate, force communities and institutions, at all levels, to discuss and actuate different approaches to achieve the social and economic growth, based on the so-called sustainable development pattern. In such a scenario, renewable energy sources, i.e. solar, wind, hydro, biomass, geothermal, etc., certainly play a key role to join progress and attention to the environmental issues.
The present Ph.D. dissertation focuses on such topics investigating strategies, methods and innovative approaches for the effective design, control and management of renewable energy plants and technologies.
Specifically, the energy scenario is investigated from a global point of view proposing studies and optimization models highlighting the relevance and the potential impact of the major energy sources, both renewable and conventional. Such sources represent the elements of a big puzzle, i.e. the energy mix, in which their economic and environmental strengths should be emphasized minimizing the associated negative impacts and weaknesses.
Among renewable sources, solar energy is of primary importance for availability, diffusion and potential impact. The present Ph.D. dissertation particularly investigates such a source presenting models, methods and prototypes to increase its relevance in the energy mix. The fundamentals of solar energy, together with innovative approaches to estimate the solar radiation components, are provided. Furthermore, the pioneering concentrating solar sector is deeply focused presenting the design, development and preliminary field-test of a bi-axial Fresnel solar photovoltaic/thermal (PV/T) concentrating prototype. Possible solar tracking strategies and control algorithms are, then, investigated describing a customized semi-automatic motion control platform, developed in LabViewTM programming environment. Finally, the last section, proposes an effective approach for the design of a solar simulator, the most frequently adopted device in solar optic laboratory tests.
In conclusion, the present Ph.D. dissertation describes effective strategies for the renewable energy spread, considering their performances and their potential impact to achieve the ambitious challenge of a sustainable living planet
The Role of Youth Social Activity in the Expression of Identities and their Consistency
No full textObjective. To identify the role of commitment to various forms of social activity in the expression of student youth identities and their consistency. Background. Social activity is the sphere of socialization of young people. Therefore, in the process of its implementation, various socio-psychological formations of the individual are formed. One of the most important is social and personal identity, considered in this study as the effects of social activity. The most important task is to study the role of involvement in various forms of activity in the formation of social identity and the stability of the personal role identity of young people. Such scientific knowledge will allow to establish the potential of social activity in the formation of youth identity. Study design. The factor structure of social identity and the relationship between types of identity and forms of social activity were studied. To establish the types of identity, factor analysis was used, the presence and nature of the relationship were recorded through correlation and regression analyses. Participants. 442 residents of Russia (average age 21,8; 33,5% men, 66,5% women). Measurements. Questionnaire, including 18 scale questions, meaningfully describing the forms of social activity (R.M. Shamionov, etc.); 17 categories of social identity, identified on the basis of preliminary piloting; methodology of stability of personal-role identity (E.A. Petrash, V.B. Nikishina). Results. Various categories of social identity form 4 enlarged groups (types) based on factor analysis. Various forms of social activity of young people form 4 enlarged groups (types) based on factor analysis: identity – personal, Internet-user, political and civil-family identity. The effects of combinations of different forms of social activity is the formation of a particular type of social identity. Forms of social activity explain from 21% to 36% of variations in social identity. The most pronounced relationship between the stability of personal-role identity was found with civic identity. Conclusions. The inclusion of students in certain forms of social activity can contribute to the formation of various types of identity and achieve a certain level of them. It is also established that the consistency of personal-role identity is positively conditioned by religious and family-household activity, and protest, spiritual and leisure forms contribute to its decrease.</p
Modelagem da interação fluido-sólido para simulação de molhabilidade e capilaridade usando o modelo Lattice-Boltzmann
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia MecânicaO estudo de problemas que envolvem a molhabilidade e a capilaridade em meios porosos tem sido assunto de grande interesse científico e econômico. A importância desse estudo é revelada por muitos processos tecnológicos que incluem a aplicação direta de fluidos sobre diferentes tipos de superfícies. O principal objetivo desta tese de doutorado é o melhor entendimento destes fenômenos físicos. Com esse enfoque, um método Lattice-Boltzmann baseado em mediadores de campo é proposto para a simulação de fenômenos que envolvem a interação fluido-sólido, no qual os efeitos das forças de interação de longa distância são importantes e devem ser considerados para que a dinâmica macroscópica observada experimentalmente seja recuperada. A modelagem da interação fluido-fluido foi feita através de um modelo conhecido na literatura. Este modelo possibilita a simulação de equilíbrio de fases através de uma equação de estado que possui um comportamento semelhante à equação de van der Waals. Os resultados obtidos mostram que o ângulo de contato depende fortemente das interações de longa distância e o aumento das forças de adesão leva à diminuição do ângulo de contato, em concordância com simulações baseadas em dinâmica molecular. No caso de superfícies sólidas irregulares, observa-se a histerese de ângulo de contato. A universalidade da dinâmica de espalhamento sobre superfícies sólidas é observada numa escala característica, na qual os efeitos microscópicos parecem ser desprezíveis. A formação de um filme precursor deslocando-se mais rapidamente que o restante da gota é notada. Os resultados obtidos para a ascensão capilar entre placas paralelas em condições estáticas concordam com resultados teóricos e ilustram que o balanço de forças local em torno da linha de contato não é influenciado pela gravidade, definindo o ângulo de contato medido na presença do campo gravitacional como uma propriedade aparente. Em condições dinâmicas, a comparação entre resultados teóricos e simulados foi feita através da equação de Bosanquet. Verifica-se que o comportamento dinâmico previsto pela solução teórica é satisfatoriamente recuperado pelas simulações em condições de reservatório infinito, particularmente se a separação entre as placas é pequena. Quando é observada alguma discrepância, nota-se que teoria e simulação não coincidem nos primeiros estágios da ascensão devido ao modelo teórico não prever a formação inicial do menisco. É mostrado que a dependência entre o ângulo de contato dinâmico e o número capilar é representativa de superfícies lisas e homogêneas
