bluuebunny/crossref_metadata_2025 huggingface dataset:
Extração do Paralelismo em Arquiteturas com Capacidade de Execução Condicional
Authors: Santos Anna Dolejsi , Fernandes Edil S. T.
Published: November 2022

O artigo apresenta o modelo CONDEX: uma arquitetura do tipo VLIW com capacidade de execução condicional. A arquitetura básica é formada por múltiplas unidades funcionais independentes que podem operar concorrentemente, processando diversas instruções procedendo do mesmo programa de aplicação. Além da especificação do modelo de arquitetura, o artigo descreve algumas técnicas para geração de código paralelo para configurações derivadas do modelo CONDEX e os experimentos para avaliar a qualidade desse código.
Alto Desempenho e Eficiência em Processamento Numérico
Authors: Diverio Tiaraju Asmuz , Navaux Philippe Olivier A. , Claudio Dalcidio Moraes
Published: November 2022

Este trabalho data das características: desempenho e eficiência em processamento numérico, através da definição de aritmética de alta exatidão e alto desempenho. Esta definição reúne os avanços nas áreas da aritmética computacional, qualidade numérica e processamento de alto desempenho. No aspecto da matemática computacional, a aritmética de alta exatidão e desempenho inclui: padronização do formato dos números e das operações em ponto flutuante pelo padrão IEEE 754; cálculo de operações com máxima exatidão; controle automático do erro nas operações aritméticas pelo uso de arredondamentos direcionados; produto escalar ótimo e matemática intervalar. No aspecto de alto desempenho, inclui rapidez no processamento obtida pelo uso da vetorização e verificação automática do resultado. Este trabalho, descreve ainda, os resultados obtidos com a biblioteca de rotinas intervalares, desenvolvida em Fortran 90, no ambiente do supercomputador Cray Y-MP, como protótipo desta aritmética de alto desempenho.
Uma Implementação do Modelo Linda para Programação Paralela em Transputers
Authors: Charão Andréa Schwertner , Machado Rita de Cássia Pivetta , Costa Celso Maciel da , Pandikow Wolfgang
Published: November 2022

Embora as máquinas paralelas atuais possam atingir alto desempenho, a programação neste tipo de plataforma geralmente é bastante rudimentar e intimamente ligada à sua arquitetura. Deste modo, ferramentas de mais alto nível, como a linguagem Linda, têm sido propostas para facilitar a programação em ambientes paralelos. Este trabalho apresenta a implementação de Linda sobre um sistema multiprocessador baseado em transputers. Seu principal objetivo é oferecer uma interface de programação mais simples e independente de máquina para o desenvolvimento de aplicações paralelas neste sistema.
Um Esquema de Escalonamento em Dois Níveis para Jobs Paralelos em uma Rede de Estações de Trabalho
Authors: Almeida Virgílio Augusto Fernandes , Árabe José Nagib Cotrim , Oliveira Adriana de Andrade , Mendes Marco Aurélio de Souza
Published: November 2022

Redes de estações de trabalho são um ambiente adequado para processamento paralelo. Ambientes de computação distribuída como o PVM provêm integração entre máquinas heterogêneas a fim de suportar a execução de vários jobs paralelos. Embora estes sistemas permitam que programas paralelos executem num conjunto de estações de trabalho, eles não tratam questões relativas ao gerenciamento e coordenação da distribuição do trabalho pela rede. Este trabalho trata o problema do escalonamento de jobs paralelos numa rede heterogênea de estações de trabalho. Heterogênea significa nesse contexto uma gama de arquiteturas de processadores e um amplo conjunto de jobs paralelos, com graus de paralelismo diferentes e mutáveis, co-existindo com jobs seqüenciais. O artigo consiste de duas partes. A primeira apresenta o projeto e a implementação de um escalonador distribuído para jobs paralelos, cujos objetivos são manter uma carga de trabalho balanceada e reduzir o tempo médio de execução dos jobs. A segunda parte analisa o impacto de jobs paralelos globais na performance de jobs interativos locais e propõe mecanismos para minimizar este impacto.
Performance Analysis of a Strategy to Distribute And-work and Or-work in Parallel Logic Programming Systems
Authors: Dutra Inês de Castro
Published: November 2022

This paper studies the performance of Andorra-I, a parallel logic programming system that exploits and-parallelism and or-parallelism with a novel strategy to distribute and-work and or-work among processors. The strategy, work-guided guides it’s decisions by looking at the amount of current and-work and or-work avaliable in an application during execution. The scheduler decision strategy moves workers from one parallel task to another according to the tasks sizes. Results show that the work-guided strategy works quite well and produces better results than the ones produced with a version of Andorra-I that does not a flow dynamic migration of workers during execution. We believe that this strategy can be applied to other parallel logic programming systems that aim to exploit both and-and or-parallelism in a single framework.
Modelagem e Análise de Desempenho de uma Aplicação Paralela Utilizando Lost Cycles Toolkit
Authors: Castro M. C. S. de , Meira Jr. W. , Amorim C. L. de
Published: November 2022

Neste trabalho realizamos a modelagem e o desempenho de uma aplicação particular na área de processamento sísmico. Para isso, utilizamos o Lost Cycle Toolkit, que se baseia principalmente em medidas dinâmicas dos programas de aplicação. O toolkit usa a priori o conhecimento das fontes e características de overhead em um sistema paralelo para guiar o processo de modelamento e avaliar o desempenho. Podem ser medidos o desbalanceamento de carga, o paralelismo, as perdas por sincronização, por comunicação e por contenção de recursos. Com este experimento foi possível observar o comportamento da aplicação quando submetida a uma quantidade variável de processadores.
Parallel Boundary Elements Using OpenMP
Authors: Cunha M. T. F. , Coutinho A. L. G. A. , Telles J. C. F.
Published: November 2022

This work presents our efforts towards single node optimization and parallelization of an existing Boundary Element Method (BEM) code using OpenMP. Basic techniques of High Performance Computing (HPC) are employed to enhance serial code performance and to identify code parts to be parallelized. Numerical experiments on a SGI Origin 2000 on large problems show the effectiveness of the proposed approach.
A Reconfigurable Computer REOMP
Authors: Ide Alessandro Noriaki , Saito José Hiroki
Published: November 2022

This work describes a proposal of reconfigurable computer, and their application to hardware implementations of neural networks. Although the neural network functions correspond to the brain functions, our computer is based on the current technology, which is completely different from the internal structure of the brain based on the neuronal cells. The proposed Reconfigurable Orthogonal Multiprocessor. REOMP, is based on processing units that are reconfigured to execute the algorithms by demanding driven rule. The performance analysis of the architecture is made with the implementation of an artificial neural network, neocognitron, which involves concurrent operations of a great number of artificial neurons. The analysis of the architecture showed that its speed-up is linear in a wide range, where the implementation of REOMP is appropriate. We conclude that the proposed architecture is able to be used to neural network hardware implementation. To obtain the best performance of the architecture, the neural network model should make use of massively parallel neural processing of the previously processed data that is the case of feedforward neural networks.
The Scalable Coherent Interface (SCI) as an Alternative for Cluster Interconnection
Authors: De Rose César A. F. , Novaes Reynaldo , Ferreto Tiago , Oliveira Fabio A. D. de , Barreto Marcos E. , Ávila Rafael B. , Navaux Philippe O. A. , Heiss Hans-Ulrich
Published: November 2022

The SCI standard was proposed in 1992 to be a high performance bus for processor interconnection in multicomputers. With the growing popularity of cluster architectures, the standard was implemented in PCI cards and of offered as a flexible an efficient alternative for the construction of parallel systems. After some initial difficulties, like incompatibilities with various PCI chipsets and the absence of drivers for some platforms, the SCl-based products are already mature but the expected breakthrough is not yet reached. In this paper we present our experience in the construction and utilisation of SCI clusters and in the development of support tools and applications for these systems. We present a survey of the obtained results over the last years in this area, including our own research, and make an analysis on how the standard and its implementations are performing today.
A Distributed Architecture Supporting Heuristic and Metaheuristic Optimization Methods
Authors: Costa Celso M. da , Dotti Fernado L. , Mathias Eder N. , Müller Felipe M.
Published: November 2022

This paper presents a distributed software architecture that allows the cooperation among research institutions in the field of Operations Research. It has as main aims to share existing algorithms for optimization problems, to allow the easy testing of these algorithms with existing instances, and to share computational power among the cooperating institutions. This is achieved respecting the autonomy and heterogeneity of the cooperating institutions. The five functional blocks that build the architecture are discussed here and also a study case of a Parallel Memetic Algorithm to solve the Traveling Salesman Problem running on this environment is analysed.
Using the SGI Pro64 Open Source Compiler Infra-Structure for Teaching and Research
Authors: Amaral José Nelson , Barton Christopher , Macdonell Andrew C. , McNaughton Matthew
Published: November 2022

Modem optimizing compilers are complex programs that require from tens to hundreds of people-years to be developed. Thus professors must use third-party compiler infra-structures to introduce students to compiler optimizations. Until recently only infra-structures developed at universities, research institutes, or by GNU were widely available for teaching. However, in May 2000, SGI made public the source code for Pro64, a highly optimized suite of compilers for the Intel Architecture 64 (IA-64) that is an evolution of the established MIPSPro suite of compilers. The use of a production-level compiler infra-structure for teaching is thus new. In this paper we report our experience using the Pro64 in a graduate compiler optimization class. We paired the study of the Pro64 with the use of IMPACT within Trimaran, and with performance studies conducted with the MIPSPro compilers. The students feedback indicate that they valued working with a state-of-the-art compiler infrastructure and studying open research topics for their class projects.
Für ein Europa der Bürger!
Authors: Höffe Otfried
Published: November 2022

Die größte politische Errungenschaft seit dem Zweiten Weltkrieg, die Europäische Union, sieht sich mit enormen Herausforderungen (Pandemie, Ukrainekrieg, Energiekrise, Klimawandel etc.) konfrontiert, die einen erneuten Europadiskurs erforderlich machen. Auf der einen Seite wollen immer mehr Länder der Union beitreten, neuerdings die Ukraine und Moldau. Weitere Länder wie Serbien und Montenegro führen seit bald zehn Jahren Beitrittsgespräche, ohne daß sich der Abschluss abzeichnete. Auf der anderen Seite wird die bestehende Union nicht nur von europafeindlichen Bewegungen bedroht, sondern verstoßen auch einige Länder gegen die europäischen Grundwerte, auf die sie sich mit dem Beitritt zur Union verpflichtet hatten. Nicht zuletzt ist ein so bedeutendes europäisches Land wie das Vereinigte Königreich aus der Union ausgetreten und sind so wichtige Staaten wie Island, Norwegen und die Schweiz der Union erst gar nicht beigetreten. Diese Phänomene mahnen zur Bescheidenheit. Die Union muß einsehen, dass Europa in politischer, auch in wissenschaftlicher und kultureller Hinsicht in weit mehr als lediglich der Union besteht. Die teils gedankenlose, teils durchaus imperialistische Gleichsetzung unseres Kontinents mit der Union ist aufzugeben.

Jedenfalls ist es an der Zeit, den Europadiskurs in der nicht bloß wirtschaftlichen, sondern auch gesellschaftlichen, politischen, insbesondere auch in der kulturellen Vielfalt und in jener Gründlichkeit zu erneuern, den die für uns existentiell überragende Sache, Europa, verdient.
Subventionierte Hegemonie
Authors: Hofmann Jens
Published: November 2022

Between 1961 and 1974, the Federal Republic of Germany and the USA concluded eight offset agreements. Under these agreements, the FRG purchased armaments and US government bonds to offset the foreign exchange costs of US troops stationed in the Federal Republic. Figuratively, the FRG thus supported the US’s military and monetary hegemony within NATO and the Bretton Woods monetary system.

This work is the first systematic study of the German–American foreign exchange adjustment until its termination in 1976. Based on an analysis of American and German files, it remeasures the weakening asymmetrical power relationship between the Federal Republic and the United States during the Cold War.
Weniger ist Mehr?
Authors: Ebner Gordian Konstantin
Published: November 2022

Subject of the work is a comprehensive analysis of the constantly criticised Art. 12-14 GDPR. In the process, the behavioural economic background of the information duties is first discussed in an abstract manner. Taking these fundamental findings into account, all controversial issues of Art. 12-14 GDPR as well as their excep-tions in §§ 32, 33 BDSG are discussed in the style of a large commentary. After a brief comparative law review, all results of the work are consolidated in concrete regulatory proposals de lege ferenda. In this way, the work attempts to contribute to the improvement of a regulatory field that has been strongly discussed in society, not only since the entry into force of the GDPR.
Estudio epidemiológico de lesiones en un equipo profesional de fútbol en Argentina
Authors: Baldjian Agustin , Mohrenberger Hernan , Ciladi Mauricio
Published: November 2022

Objetivo: Describir la prevalencia, incidencia, gravedad y el correspondiente impacto lesional de nuestra población, así como establecer una diferenciación entre el periodo del año, puestos y las situaciones en las que se producen las lesiones en un equipo de fútbol.

Materiales y método: Estudio observacional, descriptivo, retrospectivo y longitudinal de un equipo de la tercera categoría profesional del fútbol argentino durante dos temporadas (junio 2018 a mayo 2019 y junio 2019 a mayo 2020).

Resultados: De 66 jugadores, 53 informaron al menos una lesión, lo que resultó en una prevalencia de lesiones del 80,3% en el período de 2 temporadas. En total se registraron 139 lesiones, de las cuales 54 (38,8%) se produjeron durante los partidos y 85 (61,2%) durante los entrenamientos. Se registró una tasa de incidencia de lesiones de 53,6/1000 horas-partido-jugador y de 3,8/1000 horas-entrenamiento-jugador. La tasa de incidencia global fue de 6,0/1000 horas-jugador. La entidad más frecuente fue la lesión muscular estructural del bíceps femoral, con un total de 16 lesiones, seguida del esguince lateral de tobillo con 13 jugadores afectados.

Conclusión: La prevalencia de lesión fue de 80,3%, dentro de ella la lesión estructural del bíceps femoral, el esguince lateral de tobillo, las lesiones funcionales de los isquiotibiales fueron las de mayor incidencia en nuestra población, seguidas de las lesiones funcionales y estructurales de los aductores. Sin embargo, las lesiones del LCA fueron las que causaron mayor impacto lesional.
Características clínicas y sociodemográficas de sujetos con lesión medular espinal de un hospital público de la provincia de Mendoza, Argentina
Authors: Heredia Yamila , Caleri Brenda , Toledo Melisa , Gómez Daiana , Rearte Carolina
Published: November 2022

Objetivo: Describir las características clínicas y sociodemográficas de sujetos con diagnóstico de lesión medular espinal (LME) que asistieron a un servicio de rehabilitación en un hospital público de la provincia de Mendoza.

Materiales y método: Se realizó un estudio observacional, descriptivo, retrospectivo y transversal en 33 sujetos, mayores de 18 años, con diagnóstico de lesión medular que asistieron al Hospital José Néstor Lencinas de Mendoza, Argentina, entre el 1 de enero de 2017 y el 31 de diciembre de 2020. Se recolectaron variables sociodemográficas, variables relacionadas a la lesión y variables de resultado.

Resultados: El 74,4% de la muestra fue de sexo masculino. La media de edad fue de 37 ± 15 años. El 51,6% de los sujetos presentó nivel A, según la escala de la  Asociación Estadounidense de Lesión Medular (ASIA). La etiología de lesión más frecuente fue la traumática. El nivel topográfico de lesión más frecuente fue el dorsal bajo, seguido del lumbar. El 45,2% de los sujetos utilizó silla de ruedas al alta. El 80% de los sujetos presentaba ocupación previa a la lesión, que se redujo al alta en un 46%.

Conclusión: La LME fue más frecuente en hombres de aproximadamente 37 ± 15 años. La lesión torácica baja causada por accidentes automovilísticos y heridas de arma de fuego fue la más prevalente.
Estimación de la presión muscular a partir de la medición de la presión de oclusión en ventilación mecánica invasiva
Authors: García Guillermina , Gigena Santiago
Published: November 2022

La ventilación mecánica asistida debe ser optimizada para mantener un esfuerzo muscular adecuado. La herramienta de excelencia para monitorizarlo es la manometría esofágica, ya que permite calcular la presión desarrollada por los músculos inspiratorios. Sin embargo, es invasiva y poco utilizada en la práctica diaria.

Bertoni et al. proponen que, a partir de una maniobra de oclusión espiratoria, la deflexión de la presión de la vía aérea provocada por el esfuerzo del paciente contra la vía aérea ocluida (ΔPocc) permite estimar el valor de presión muscular de manera sencilla y no invasiva.

En la actualidad, gran parte de los ventiladores tienen la posibilidad de realizar maniobras de oclusión en modos controlados y espontáneos. El objetivo del presente paso a paso es describir el procedimiento de la medición y el cálculo de la presión muscular a partir de la ΔPocc.
O conhecimento tradicional sobre plantas medicinais no âmbito da saúde da mulher: uma perspectiva no contexto do produto tradicional fitoterápico
Authors: Cipriano de Oliveira Ana Paula
Published: November 2022

Substâncias derivadas de plantas tem notório destaque no mundo como agentes terapêuticos. Neste contexto a mulher ganha um importante papel como detentora e difusora dos conhecimentos tradicionais relacionados às plantas. Através de uma revisão sistemática pôde-se observar importantes avanços na área de regularização de fitoterápicos, como é o caso do Produto Tradicional Fitoterápico.
Radiopacity of premixed and two-component Calcium silicate-based Root Canal sealers
Authors: Dželetović Bojan , Milanović Ivana , Antonijević Đorđe , Badnjar Jovan , Petrov Zoran , Antić Svetlana , Ležaja-Zebić Maja
Published: November 2022

Background/Aim: Radiopacity enables radiographic visualization, which is significant in diagnostic procedures and assessment of the quality of endodontic filling. It is important to compare newly developed endodontic sealers with materials that are already in clinical use in order to promote evidence-based dentistry. The aim of our study was to evaluate radiopacity of different calcium silicate-based sealers in comparison with control, epoxy resin-based sealer. The null hypothesis was that there were no statistically significant differences in radiopacity of the tested sealers. Material and Methods: Premixed (TotalFill BC Sealer, EndoSequence BC Sealer, Ceraseal, Bio-C Sealer), two-component (BioRoot RCS, MTA Fillapex, Bioceramic Root Canal Sealer, GuttaFlow Bioseal) calcium silicate-based sealers and AH Plus, as a control, were used. Specimens were radiographed using a Radiovisiography (RVG-4) CCD (charge-coupled devices)-based digital sensor. Results: Ceraseal had the highest, while Bioceramic Root Canal Sealer had the lowest radiopacity. Bioceramic Root Canal Sealer and MTA Fillapex had radiopacity significantly lower than all other sealers. Radiopacity level of AH Plus, was similar to premixed and significantly higher than radiopacities of all two-component endodontic sealers. Conclusions: Calcium silicate-based sealers radiopacity ranged from slightly above minimal required value (3mm), to a value higher than control sealer. Premixed endodontic sealers showed similar radiopacity as AH Plus which suggests that their clinical performance, in terms of visibility on dental radiograms, should be similar
Analysis of the pattern, type and the extent of dental services provided to children and youth on the territory of Republic of Serbia
Authors: Petrović Bojan , Marković Dejan , Perić Tamara , Marković Evgenija , Vuković Ana , Kilibarda Biljana
Published: November 2022

Background/Aim: The requirements for dental specialties and the number of specialists in each country are unique and strong indicator of the availability and affordability of primary health care for children and adolescents. The aim of this study was to determine the pattern, type and the extent of dental services, as well as the influence of regional factors and data on whether services are provided by a pediatric dentist or general dentist have effect on these parameters, based on information obtained from dentists providing dental care to children and youth. Material and Methods: Within the project "Program for the improvement of oral health of children and youth in the Republic of Serbia", supported by the Ministry of Health of Serbia, a research was conducted among dentists involved in dental care for children and youth in Serbia. Data collection from primary health care facilities was performed through a specially designed questionnaire. A total of 445 questionnaires were collected from dentists from 102 health centers in Serbia in the period June - October 2019. Results: There are significant differences between regions in the pattern, type and the extent of dental services. In the quantitative analysis, there are no significant differences in the type of dental services between pediatric and preventive dentistry specialists and general dentists. Conclusions: The data from the conducted research speak in favor of a large daily workload of dentists who deliver oral health care for children and youth in Serbia. Additional multifactorial analysis, which includes epidemiological data from the region, but also environmental, demographic and cultural parameters of oral health could be the basis for improving the provision of preventive dental and preventive oral care
Leukopenia as the only symptom of COVID-19 in patients with schizophrenia on Clozapine therapy
Authors: Greš Alen , Staver Dijana , Šagud Marina
Published: November 2022

Patients suffering from Covid-19 often have leukopenia, most often lymphopenia, as an accompanying laboratory manifestation of the clinical syndrome, but there are indications that at the beginning of the disease they also have mild neutropenia. Clozapine can have hematological side effects in terms of leukopenia - most often neutropenia. The paper presents a patient with schizophrenia who is on long-term Clozapine therapy. At the time when leukopenia was detected in the blood count, he was mentally stable and physically asymptomatic. He had a reduced number of leukocytes as the only symptom of infection with the new coronavirus SARS CoV 2, which we confirmed by PCR. In this paper, we present the clinical picture of COVID-19 in connection with the possible overlapping etiology of leukopenia, which can also appear as a separate symptom of infection with the SARS CoV 2 coronavirus and be a hematological side effect of Clozapine treatment.
Retraction: State of the art and new frontiers in sleep research: New qualitative and quantitative approaches (2002, vol. 24, no. 2, pp. 62-73)
Authors: Editorial Board
Published: November 2022

Based on the fact that journal ENGRAMI is indexed in Serbian citation index SCIndeks, which provides journal a check of the manuscript, we are informed that based on subsequent, retroactive manuscript checking on the presence of plagiarism by means of CrossRef/iThenticate service, a violation of academic ethical principles was found. The paper entitled: State of the art and new frontiers in sleep research: New qualitative and quantitative approaches by authors Ilanković N. and Ilanko vić A. (https://scindeks.ceon.rs/article. aspx?artid=0351-26650202062I) which is published in the journal ENGRAMI (2002): 24(2) (pp. 62-73) presents the (auto)plagiate (extensive Editorial board use of the text published in the previous papers without quoting the original) of the articles: Ilanković N, Draganić S and Ilanko vić A. EEG and the sleep disorders. in: Ilanković N, Ilanković V. i Jašović-Gašić M. (eds). Bolesti spavanja dijagnostika i lečenje (Cibif, 1995): 79-96. Ilanković N and Ilanković AN. EEG and the Sleep Disorders: a new quantitative approach. In: Brain and Consciousness. Proceedings of the First Annual ECPD International Workshop on Scientific Bases of Consciousness. (Belgrade, 1997, Čigoja štampa), pp. 117-128. Moreover, paper "State of the art and new frontiers in sleep research: New qualitative and quantitative approaches" published in Engrami, 2002 was almost identical with the later publication: Ilanković N, Ilanković A, Ilanković V. New Hypothesis and Theory about Functions of Sleep and Dreams. Macedonian Journal of Medical Sciences. 2014 Mar 15; 7(1):78-82. The authors approached inadequately the quotation and citation of sources and thus acted contrary to the ethical code of scientific research, grossly violating the editorial policy of the journal ENGRAMI and Committee for Ethics of Publication principles. Bearing in mind a violation of ethical principles relating to a multiple submissions from 1995 to 2014, the editorial board of the journal EN GRAMI made a retraction of the paper.
Chamber music of Szilárd Mezei and differentiated congruence in its composing layers (II)
Authors: Sovtić Nemanja
Published: November 2022

A look at the morphology of the musical language of the Vojvodina composer Szilárd Mezei reveals different relations among its composing layers. On a selection of fifteen of Mezei's chamber compositions, the basis of their compositional structure was abstracted and typologically classified into four fundamental ways of coexistence of textural layers. These modalities are defined as differentiated congruence. The chosen syntagm does not refer to the mathematico-logical meaning of congruence , but to the resemantization of that notion in the context of the fact-object reality of musical space-time. Although none of these four types of congruence is specific only to the musical world of Szilárd Mezei, the fact that they appear in the composer's work somewhat proportionally indicates specific ideological aspirations included in the poetic plane of the work.
The Holocaust, God, and philosophy's 'ratlines'
Authors: Soldat Oleg
Published: November 2022

The subject of this paper concerns two mechanisms wich help philosophy to circumvente the subject of Holocaust. These are: the philosophy of Heidegger and the neo-marxists tenets of so called Frankfurt School, especially those of Theodor Adorno. While Heidegger is seen in this paper as a resulting prioritization of chtonic symbolism within the the culture of Wiemar Germany, which pushes out the alternative of Ernst Cassirer, the leftist matrix of Adorno's thought is equally seen as a distancing paradigm that abolishes Biblical language, through metaphysics. Paper investigates in some details these mechanisms which aim at abolishing strategic solutions of both Jewish nation and Holocaust - in the package of Zionist ideals. Author sees philosophical fixation on generic trajectoria of man-as-species, as a way of devious handling of the specifics of the Jewish existence.
Everyday forms of resistance of the traditional Serbian peasantry
Authors: Šljukić Srđan , Šljukić Marica
Published: November 2022

Weber's definition of power includes the existence of a social relationship, but also a possibility of resistance and, consequently, a conflict with it. The resistance to the enforcement of the will on the part of the side with power takes various forms: violent and non-violent, individual, and collective. In sociology, peasantry is seen as a social class without power, that is, the one that always stands opposite powerful social forces, which exert their will over it. In this paper, the authors pay attention to everyday forms of resistance used by peasantry and analyzed by J. Scott, an American researcher. Historically speaking, the Serbian peasantry used everyday forms of resistance as well, especially during the periods of foreign domination. Everyday forms of resistance can also be observed in some other powerless social entities. The consciousness of social actors usually does not go beyond the understanding of open forms of (violent) resistance. Besides these open forms of resistance (macro politics), however, there has always been the micro politics of resistance, that is, the everyday forms of resistance, especially practiced by traditional peasantry. In this paper, we focus on the hidden transcript (Scott) of the traditional Serbian peasantry, using the funny folk tales as a sociological material. Resistance can be understood as the other side of power, always present in relations of power, even though in various forms. Traditional peasantry, being a social class without power, often uses everyday forms of resistance and, at the same time, forms a special kind of its own ideology, a hidden transcript. Among other things, a hidden transcript includes folk songs, folk tales, etc. From funny folk tales of the traditional Serbian peasantry we can understand how the peasantry saw their relation with the oppressors (the Turks and others). In these tales it was especially important to show that peasants are cleverer than the oppressors, since the violent means were in the hands of the Turks. Once the situation had changed, the open resistance took place of everyday forms, and the power relation changed as well. The wider meaning and explanatory use of the concept of everyday forms of resistance can be seen in the fact that they can be used for understanding and explanation of behavior of any powerless group.
Old and new forms of artistic engagement in a culture of resistance
Authors: Gudović Zoran
Published: November 2022

Using the ethno-methodological theoretical paradigm and the historical method, the author comes to the conclusion that culture, politics and the artistic atmosphere that enriches space form an indivisible structure of events and phenomenological perception of the culture of resistance in modern society. The culture of civil resistance present in art is inseparable from political movements and opposition to repression. Political protests have also become a form of performance that the author seeks to observe from a broader context of street culture in the theoretical perception of the epistemology of space. This way, the tendency and ability to see the meaning and spirit of various manifestations is allowed to come forth. Socio-cultural preconceptions of various art forms and manifestations as well as their historical, political, and ideological conditioning in the global environment and (post) globalism are all explored. As the main research subject, the author takes caricature and art of aphorism, perceived as traditional forms of resistance, and performance, due to its visual and expressionist-based message as a relatively new artistic practice and a more effective form of civil resistance. By determining the meaning of phenomena using linguistic and visual representations, the author notices the political nature of their expression. In this paper, the author strives to break the 'modern dogma' by which politics and art are in an inherent conflicting relationship. Therefore, the basic thesis of the text is the author's effort to bring the goals of politics and art conceptually closer through the basic proclamation of human freedom. The foundation of freedom and creative choice constitute their common and fundamental value. Performance establishes a rational compromise in which the government and opposition groups believe in the democratic potential of their role, pacifying the space in the new circumstances. Ideological fervor and propaganda goals make an unfortunately thin line between the cultured and the uncultured.
Medial turn and aesthetics of excess
Authors: Stojanović-Prelević Ivana
Published: November 2022

The evolution of media system had an impact on human forms of communication and the relationship between human beings and reality (Schmidt,2013). In addition, the relationship between the media and human beings has undergone changes. Human beings have become an instrument of the media, rather than its goal, which is opposite to deontological ethics based on the respect of human dignity. After transition from communicativeness to mediality, one can talk about the mediatization of mind, which consists of the development of new tools: computers (Hudzik, 2018) and technocentrism (Krämer, 1989). The medial turn means that the form is more important than the content, which is reflected in the media aesthetics, also called (after the media turn occurred) the aesthetics of excess. (Lipovecki, Seroa 2013). The author explains the medial turn phenomenon and explores the nature of the corresponding media aesthetics. A descriptive method is used. Given that visual culture is widespread, due to the development of technologies and possibilities of manipulating and using different effects, the focus of media contents is more on the image, which goes in favor of the hypothesis that contemporary society is the society of images, not of the text (Mirzoef, 1983). This is also the main hypothesis in the paper, which is confirmed in the conclusion.
Political theory of secession: Some aspects of the Kosovo case
Authors: Krnetić Helena
Published: November 2022

In this paper, we will try to test the dominant political theory of secession, namely the contractualist one, in one specific case - the secession of Kosovo. This case is particularly important because it represents the most important, if not the only, exception of the dominant political theory of secession and the existing political practice of secessionist movements as well. Obviously, this exceptionality must be based on some other basis. One possible claim is the "historical" basis of independence. In this text, we will test this argument and show its untenability.
Analysis Methods for Evaluating Motions and Accelerations of Planning Boats in Waves
Authors: Zseleczky John , McKee Glenn
Published: November 2022

For some time, the experimental testing or model planing hulls in rough water has been done by towing tanks throughout the world. The common goal or all these efforts is to provide designers with information that will give them a better understanding or the effects of hull form on the response to waves -in terms of motions, accelerations, added resistance, loads, and operating conditions.

It has become increasingly common to analyze the time series data from these experiments using a peak-trough identification. technique (PKT). Once peaks and troughs are identified, they are sorted and averaged over subsets to obtain averages of the 1/m-th highest statistics - which are the statistics currently used by planing boat designers.

There are two problems involved with the current approach, one is conceptual and the other is operational: 1) 1 /m-th highest statistics involve the construction of averages based on the number or oscillations observed, however there are no rules for determining the number or small oscillations to be rejected, consequently, 2) the PKT Method requires subjective input from the user that can affect the statistics.

This presentation is a joint effort between the Davidson Laboratory and Naval Academy Hydromechanics Laboratory to inform both designers and other experimentalists about the care that must taken in using the average or the 1/m-th highest statistics and to suggest alternative measures or motion and acceleration response that are objective and easy to understand.

It is also hoped that this paper will start a discussion with designers about the specific nature of the hydrodynamic data needed to enable more mission and cost effective boat designs to be produced.
Construction and Commissioning of the Offshore Engineering and Seakeeping Basin at the Institute for Marine Dynamics
Authors: Murray J. , Fudge G.
Published: November 2022

The National Research Council of Canada is presently constructing and preparing to commission a 75 m x 32 m x 3.5 m Offshore Engineering and Seakeeping Basin at the Institute for Marine Dynamics in St. John's, Newfoundland. The Basin will be capable of simulating waves, wind and current, for use in both commercial and research programs. The first stage of commissioning and calibration will focus on preparing the Basin, scheduled for completion in February 1990, for commercial testing of moored and free running vessels.

Waves are gene rated in the Basin by means of a 192 segment wave machine, mounted in a "J" configuration. Short and long-crested monochromatic and random waves will be generated using the snake principle. Passive wave absorption is utilized in the Basin using expanded metal sheets of varying porosities and spacings. These are located at all Basin wall locations not supporting wave generators.

A bank of 24 analog controlled fans is used to generate wind. Turbulence spectra and velocity profiling are established by fluctuating the speed of the fans using precalibrated drive signals. Surface current is generated by setting up water circulation within the Basin. Submersible pumps are used to charge manifolds positioned at various levels below the surface.

The data acquisition system, controlled by a microVAX-II computer, is capable of variable rate sampling of 128 channels of A/0 and can simultaneously output 16 channels of DIA. The microVAX is networked to a local VAX 3200 used for synthesis of drive signals and test data reduction and analysis. Model motions in six degrees-of-freedom are measured using an optical tracking system, consisting of three vertical and two horizontal cameras, and light emitting diodes positioned on the model.
Some Design Considerations for Multidirectional Wave Basins
Authors: Miles M.
Published: November 2022

Procedures are described for estimating the useful working area and the maximum run length in rectangular basins with segmented wave generators installed on one or two sides. These are based on evanescent wave zones, wave diffraction boundaries and wavelength limits due to segment width. Directional wave spectrum distortions due to basin limitations are also discussed and some wave generation techniques based on the use of sidewall reflection are reviewed.
Pressure Panel Design and Application for the Measurement of Wave Impacts
Authors: Kuny James , Lesko John , Lewis Richard , Hay William
Published: November 2022

The design of high-performance ships (SES, Hydrofoil, Swath) frequently involves the determination of secondary (wave impacts) loads. An inability to accurately determine wave impact pressures analytically necessitates model testing to provide this in formation. Conventional pressure transducers which sense pressure over a small area do not accurately measure the load experienced by a panel/grillage combination. Thus, by employing a transducer that models the stiffness, area and dynamic characteristics of the structure in question, structural responses to wave impacts can be measured. From the responses of these statically calibrated panels /grillages, equivalent uniform static pressures can be directly measured so as to provide secondary load design criteria.
Generation of Long Runs of Waves in Laboratory Basins
Authors: Wallendorf Louise
Published: November 2022

The procedures used to collect laboratory data for the determination of the statistical properties of wave groups in irregular long crested deep-water waves are described. This discussion summarizes the practical aspects of generating non-repetitive long runs of data, the analysis of group statistics based on an envelope of the wave crests and operational tests to estimate the effects of tank reflections on a stationary wave measurement. Data analysis is shown for a sample Bretschneider spectrum. This work is part of a large comprehensive study of wave group theories and their verification using laboratory data.
Multi-Directional Seas - A practical Tool for Evaluating the Feasibility of Marine Operations
Authors: Edwards R.
Published: November 2022

The timing and feasibility of installing skyscraper sized structures in the ocean depends strongly upon limitations dictated by motion response of complex combinations of heavy 11ft vessels, barges and the structures to be installed, all Joined by elastic tethers. Exposure of these systems to long crested and Irregular seas in a model test does not produce a complete picture of the response to a realistic environment.

In several recent model test programs to support the assessment of the feasibility of Installing large structures, short crested seas have been generated and imposed on combinations of semi-submerged vessels and jacket structures in partial contact with the bottom. In some cases, the expectation that short crested seas would result in less severe system loads and motions was not realized.

This paper will discuss the methodology employed to set up the complex physical simulation of lowering a 10,000 + ton offshore tower and mating It to a predrilled template in a North Sea environment.

The techniques used to generate the multi-directional seas will be presented and the resulting functions characterizing the measured model sea will be presented and compared to the desired.

The responses of a complex moored system of structure and semi-submersible lift ship to irregular and short crested seas will be presented and compared.
A Design Method and an Application for Contrarotating Propellers
Authors: Chen Benjamin , Reed Arthur
Published: November 2022

A design methodology for contrarotating propellers bas been developed based on rational hydromechanics. Three fundamental principles need to be satisfied: momentum, mass, and circulation conservation. Momentum conservation requires the net force generated by the contrarotating propeller to be balanced by the drag of the bare body and the drag due to hull-propulsor interaction. Mass conservation determines the circulation distribution of the aft propeller once the forward propeller circulation distribution is specified. Circulation conservation determines the magnitude of the circulation distribution of the aft propeller to ensure the proper thrust and torque ratios. The effects of the hub boundaries have been taken into account in the design and analysis methods. A contrarotating propeller set was designed for uniform flow at the operating point of the propeller for a high-speed surface ship. Open water results show that the performance predictions agree well with the measurements.
The use of System Identification Techniques to Measure the Ship Resistance, Powering and Maneuvering Coefficients of the Exxon Philadelphia and a Submarine from Simple Trials During a Routine Voyage
Authors: Abkowitz Hartin
Published: November 2022

The ship modeling testing community is well aware of the difficulties and uncertainties that exist in predicting ship performance from scaled model tests because of the inability to satisfy the condition that the model be tested at the same Reynolds’ number at which the ship operates. As a result, the hydrodynamic coefficients measured on the model are not the same as those of the ship at this scale effect must be corrected for in order to produce realistic and reliable prediction of ship performance. Many methods of correcting for scale effect involving theoretical and experimental studies have been developed over the years to help improve predictions, but we presently are not satisfied and strive to improve out techniques.
The effects of Reynolds Number, Section Shape, and Turbulence Stimulation on the Lift of a Series of Model Control Surfaces
Authors: Lewandowski Edward
Published: November 2022

A series of model control surfaces with equal areas but varying aspect ratio, was lasted in a towing tank on a ground board. The size of the fins, approximately 3 inches span and two inches chord, is typical of control surfaces used on models which are about five feel long. Lift and drag on the fins were measured over a range of angles of attack of 0 to 35 degrees. The tests covered a range of chord-based Reynolds numbers between 42,000 and 150,000.

Two sets of fins were tested, one having flat-plate sections and the other having NACA 0015 sections. The fins were each tested with and without turbulence stimulation In the form of tape with a serrated leading edge placed at 5% of the local chord aft of the leading edge of the foil.

The study has shown that the lift of the NACA 0015 fins was insensitive to Reynolds number in the range of the tests, and that the lift rates compare well with the results of previous tests carried out at high Reynolds numbers. Differences were noted in the characteristics of flat-plate and NACA 0015 fins which would indicate that the use of flat plates in the place of foil-shaped fins to save model construction cost is not good practice. Turbulence trips increase the measured drag, as expected, but also reduce the lift rate, most noticeable on the flat-plate fins.
Drag Reduction with Riblets on Rowing Shells
Authors: Coder David , Walker David , McKelvey Dennis , Enzinger Steven
Published: November 2022

An experiment is described in which riblets, which are longitudinal surface groves that have been shown by NASA to reduce turbulent flow skin friction on flat plates by much as 8 percent, are used to attempt to reduce the overall vehicle drag of rowing shells. Two single rowing shells, borrowed from the USNA rowing team and ballasted (with the outriggers removed) to represent a 200 lbf rower, were attached to the drag balance of the carriage of the USNA tow tank and towed at steady velocities from 4 to 20 ft/sec in 2 ft/sec increments. The attachment mechanism allowed the shells to move freely in heave and pitch (sinkage and trim) which were measured with a sonic height probe and angleometer, respectively. Various surface conditions tested include bare hull, flat (non-ribleted) tape, and riblet tape (cleaned and uncleaned) in combination with two sizes of trip wire and three trip locations. The particular riblet tape used provided a surface geometry of saw-tooth pattern transverse to the flow with a height and spacing of 0.003 in.

This provided an optimum non-dimensional height (s+) recommended by Walsh and Lindemann (1984) of NASA of 12 to 15 over most of the shell length for the higher velocities. The overall vehicle drag results are compared with and without riblets and with and without trip wire. Riblet drag reductions of between 3 and 5 percent are observed. The trip wire results showed an increase in drag due to their parasite drag at. the lower velocities but a drag reduction at the higher velocities. Predictions of the viscous component of the drag difference between configurations are developed including the effects of sinkage and trim. The predictions compare qualitatively with the experimental results except for the apparent drag reduction with a trip wire at the higher velocities.