bluuebunny/crossref_metadata_2025 huggingface dataset:
PREMATURE EJACULATION: CURRENT ASPECTS ON DIAGNOSIS AND TREATMENT. INTERDISCIPLINARY UROLOGICAL CONCILIUM
Authors: Zhukov O. B. , Kibrik N. D. , Astafyeva L. I. , Vasilyev A. E.
Published: August 2018

The article deals with the main aspects of the diagnosis and treatment of premature ejaculation in the framework of an interdisciplinary approach – involving data of psychology, urology, andrology, endocrinology, neurology. The possibilities of therapy of this disease with the use of selective serotonin reuptake inhibitors, allowing to increase the time of intravaginal delay of ejaculation by 3.0–3.5 times, are analyzed.
EFFECTIVENESS OF ASSISTED REPRODUCTIVE TREATMENT PROGRAMS DEPENDING ON THE CHARACTERISTICS OF SPERMOGRAM CHANGES
Authors: Gamidov S. I. , Ovchinnikov R. I. , Popova A. Yu. , Polozov V. V. , Naumov N. P. , Gasanov N. G.
Published: August 2018

Introduction. There’re some pathological mechanisms of male fertility disorders that still don’t have proper diagnostic tests. This significantly decreases diagnostic value of a spermogram and makes the problem of evaluation of the characteristics of spermogram changes and their effects on the effectiveness of assisted reproductive technologies (ART) a pressing problem.

The study objectiveis to identify the correlation between effectiveness of ART programs and the characteristics of spermogram changes, in particular sperm concentration, motility, and morphology Materials and methods. At the V.I. Kulakov Research Center for Obstetrics, Gynecology and Perinatology in the period from December of 2012 to December of 2016, 10,042 married couples who underwent treatment using ART (2221 – in vitro insemination (IVF), 7821 – IVF with intracytoplasmic sperm injection) were examined.

Results. In patients after IVF, the frequency of live births significantly depended on sperm concentration: 28.6 % for concentration above 5 mil/ml and 51.5 % for concentration above 15 mil/ml (p <0.0001). No significant difference was observed for the dependence of the frequency of live births on the number of progressive-motile sperm (grade А): 38.2 % for <5 % and 57.7 % for >15 % (p = 0.11), or on the number of spermatozoa with normal morphology: 50 % for ≥4 % and 45.5 % for <4 % (p = 0,23). In patients after IVF with intracytoplasmic sperm injection, the concentration of spermatozoa, number of progressive-motile sperm (grade А), and number of spermatozoa with normal morphology didn’t affect the frequency of live births in a statistically significant way.

Conclusion. Sperm concentration, motility, and morphology can affect the frequency of live births in the IVF program, but statistically significant correlation was observed only for sperm concentration. After IVF with intracytoplasmic sperm injection, only sperm morphology affects the frequency of live births, but not in a statistically significant way.
IMPULSE BAROTHERAPY IN A COMPLEX TREATMENT OF PATIENT WITH CHRONIC ABACTERIAL PROSTATITIS AND ERECTILE DYSFUNCTION USING THE MKV-01 “IVAVITA” SYSTEM (CLINICAL CASE)
Authors: Dolgov A. B. , Churakov A. A. , Fomkin R. N. , Korolev A. Yu. , Popkov V. M.
Published: August 2018

In this article clinical case of treatment of chronic abacterial prostatitis and erectile dysfunction using the local baroimpulse therapy with the urogynecological device “Ivavitа” is presented. This method is included in complex therapy along with standard methods. Clinical and instrumental parameters were corrected by this treatment regimen in this patient.
PROBLEMS OF MEDICAL CARE IN PEOPLE WITH GENDER IDENTITY DISORDER
Authors: Kibrik N. D. , Yagubov M. I. , Shigapova V. I.
Published: August 2018

In the article, a clinical example demonstrating problems of differential diagnosis of gender identity disorder is considered. The main examination and treatment principles currently used for patients seeking sex reassignment are described. The necessity of optimization of diagnostic, treatment, and rehabilitation approaches is demonstrated. Inadvisability of simplification of the gender reassignment procedure which due to diagnostic errors can worsen a patient’s maladaptation is noted.
Introduction of medical products into healthcare practice and costs reimbursement: European experience
Authors: Omelyanovsky V. V. , Otstavnov S. S. , Musina N. Z. , Dombrovskii V. S.
Published: August 2018

in the present article, we review the ways of introducing medical products into healthcare practice in countries of the european Union and compare them with the Russian experience. in this analysis, we underscore the existing differences but also identify the common aspects, for example, the mandatory stage of integrated assessment; all those are described in detail in the review. The eU experience should be considered when introducing medical products into the healthcare practice in the Russian Federation. The comprehensive assessment of new technologies will provide for the transparency of the proposed system.
V.M. Bekhterev`s Pedagogical Institute for Social Breeding and Research of the Normal and Defective Child (1921-1925): Theoretical and Applied Value
Authors: Dolgova E.A. , Hivinova D.A.
Published: August 2018

In article is covered the history of one of interesting educational institutions of the beginning of the 1920th – Vladimir Bekhterev`s Pedagogical institute for social breeding and research of the normal and defective child acting as a part of Psychoneurological academy in 1921-1925. Addressing unpublished documentation from funds of the Central state archive of St. Petersburg, the State archive of the Russian Federation, authors reconstruct history of creation and feature of functioning of Institute, investigate its scientific educational program and possibilities of its realization in practice, characterize structure and dynamics of training of students, place emphasis on establishment of interrelation of Institute with other institutions and laboratories of Psychoneurological academy, providing his functioning infrastructure. Authors draw a conclusion that the Vladimir Bekhterev`s Pedagogical institute for social breeding and research of the normal and defective child became useful experience of coordination of theoretical researches and applied developments in field of experimental pedagogics of the 1920th. Classical psychoneurological theories, on the one hand, and the ideas of the doctrine of V.M. Bekhterev - reflexology (individual and collective) - with another have been the basis for an institution. The educational program offered as a result differed from existing at that time and assumed attention to a labor element of education and a priority of a practical training over theoretical. The last answered the essential tasks set for scientific community and it was demanded in the early twenties: the project has got public financing and support. Though the idea of Institute was impractical, it reflects a bright, contradictory and interesting era of experimental science in the 1920th.
Сonditions of Formation of Cognitive Meta-Subject Results in Younger Schoolchildren
Authors: Zak A.Z.
Published: August 2018

The article presents a study aimed at evaluating the author's program "Intellectics" as a condition for the formation of cognitive actions in younger schoolchildren. This program includes search tasks for non-curricular content of a different kind and types, which were solved by fourth-graders in group form during off-hour time in 32 classes during the school year. The author's technique "Substitution" is presented, which includes two tasks: to determine the formation of a method for solving search problems (general or particular) and the formation of reflection in solving problems (meaningful or formal). For the first time, , the results indicating the significant impact of the program "Intellektika" on the achievement of children of high metasubject educational results.
Professional-Public Mechanisms Assess the Qualifications of Educators
Authors: Egorov I.A. , Yamburg Y.S. , Akhapkina M.E. , Volkova A.A. , Katrenko O.N. , Kocherejko S.S. , Odintsova N.N.
Published: August 2018

The article describes the progress of work on the project "Professional and public mechanisms for assessing the qualifications of educators " implemented by the Pedagogical Association «XXI century educator» using the grant of the President of the Russian Federation for the development of civil society provided by the Foundation for Presidential Grants (No. 17-1-008266) and its main results. Based on the current achievements of Russian and foreign pedagogical science and practice, in accordance with the professional standard of the educator and taking into account the current formation and introduction of the national system of teacher growth, proposals have been developed for assessing the qualifications (labor actions) of educators in the form of draft normative legal act and methodological recommendations. The necessity of active and wide participation of the professional pedagogical community in the organization and evaluation of the qualification of pedagogical workers as a necessary condition for building an effective system ensuring the professional growth of educators is substantiated.
Stroke types and management
Authors: Alrabghi Lujain , Alnemari Raghad , Aloteebi Rawan , Alshammari Hamad , Ayyad Mustafa , Al Ibrahim Mohammed , Alotayfi Mohsen , Bugshan Turki , Alfaifi Abdullah , Aljuwayd Hussain
Published: August 2018

Strokes are a leading cause of morbidity and mortality across the world, in fact the third leading cause after heart diseases and cancer. Additionally, among the survivors of stroke, one-third suffers from permanent disabilities. Strokes can be classified broadly as ischemic and hemorrhagic, which account for 80% and 20% of total respectively. The prognosis of cerebrovascular accidents depends on quick diagnosis of the type, followed by appropriate and fast management. We conducted this review using a comprehensive search of MEDLINE, PubMed and EMBASE, from January 1982 to March 2017. The following search terms were used: stroke, cerebrovascular accidents, ischemic stroke, hemorrhagic stroke, stroke types, management of stroke, rehabilitation, CVA prevention. The most critical part about approaching a stroke patient is to identify the type of stroke, whether hemorrhagic or ischemic, as each type requires a different guideline of management. Also, time is the key in preserving neuronal function and preventing further damage. At the same time, the general population must be educated about methods of preventing stroke by making positive lifestyle changes.
Competência Social, Problemas Emocionais/Comportamentais e Reprovação Escolar: Estudo de Comparação entre Adolescentes
Authors: Pezzi Fernanda Aparecida Szareski , Mahendra Fénita , Ghedin Dienifer Mattos , Marin Angela Helena
Published: August 2018

A reprovação escolar ainda se apresenta como um relevante problema no Brasil, fazendo-se importante investigar fatores a ela associados. O presente estudo teve como objetivo avaliar a competência social e problemas de comportamento entre adolescentes com e sem histórico de reprovação escolar. Trata-se de uma pesquisa quantitativa, com delineamento correlacional e comparativo de corte transversal, da qual participaram 76 adolescentes, sendo 35 com histórico de reprovação e 41 sem este histórico, de duas escolas municipais de São Leopoldo/RS. O instrumento utilizado foi o Inventário de Comportamentos Autorreferidos para jovens de 11 a 18 anos, além do registro do número de reprovaçõs escolares, obtido junto as secretarias de cada escola acessada. Os resultados evidenciaram que os dois grupos apresentaram níveis de competência social e de problemas emocionais e de comportamento semelhantes, demonstrando que nesta amostra o desempenho escolar não estava associado às variáveis analisadas. Tais dados sugerem que a reprovação escolar se constitui como um fenômeno multidimensional para o entendimento do qual a avaliação isolada de variáveis individuais não parece ser suficiente.
Relações entre não Maternidade e Sexualidade Feminina: Revisão Integrativa da Literatura Científica
Authors: Farinha Ana Julia Queiroz , Scorsolini-Comin Fabio
Published: August 2018

A sexualidade feminina ancorou-se, por décadas, nos estereótipos culturais de que a vida sexual conjugal era desnecessária assim que a mulher cumprisse a função de procriar. Este estudo objetivou apresentar uma revisão integrativa da literatura científica acerca de como a não maternidade interfere na sexualidade feminina. O método baseou-se na busca por artigos completos nas bases/bibliotecas LILACS, PePSIC e SciELO, publicados em português no período de janeiro de 2012 a novembro de 2017. Os artigos tinham que contribuir para responder à pergunta norteadora: Como a não maternidade interfere na sexualidade feminina? Foram recuperados para análise 19 artigos e os resultados mostram que 15 são estudos empíricos que utilizaram enfoques quantitativos e qualitativos. A literatura aponta que parece haver uma identidade de papel sexual menos tradicional nas mulheres voluntariamente sem filhos. Dar visibilidade à maternidade e a não maternidade é um movimento igualmente importante, abrindo possibilidades de leitura e construção de roteiros sexuais e afetivos menos conservadores e engessados em uma lógica restritiva, punitiva e inflexível, o que deve ser permanentemente capturado pela literatura da área.
Mobile Learning Perception of Graduate Student Teachers: A Case Study in Magister Program of Educational Technology of University of Sebelas Maret
Authors: Hanif Muhammad , Asrowi Asrowi
Published: August 2018

In the context of higher education institutions in Indonesia, some of schools authority refuses the implementation of mobile learning. Although m-learning is widely used in some school in Indonesia and considered as an effective educational tool, it is not yet fully utilized in most Indonesian school. Before designing a mobile learning system, it is necessary to assess the perception of target users towards mobile learning since their perception will influence the successful the system. This research aims to investigate the perception of students of educational technology program who currently are being teachers in several level of educations towards mobile learning to ascertain their readiness to apply a mobile learning system in their teaching. The respondents of this study are 18 teachers who are being students of Magister Program on Educational Technology in e-learning & mobile learning class in even semester. This research is conducted with a survey related to implementation of mobile learning. The results show that teachers in Indonesia had positive perception and were looking forward to apply mobile learning in their teaching. Knowledge and learning method issues were not obstacles for them to use a mobile learning as well as financial obstacle. The readiness for mobile learning of teachers are vary based on the school level even though they have been taught mobile learning subject. The findings surprisingly show that accessibility of device may be a big problem on implementing mobile learning in class.
Does laparoscopic appendectomy increase the risk of intra-abdominal abscess in children who have perforated appendicitis?
Authors: AKBIYIK Fatih , EKBERLİ Günay , ÇAVUŞOĞLU Yusuf Hakan
Published: August 2018

Objective: The
aim of this study is to compare the rates of intraabdominal abscesses (IAAs),
in laparoscopic appendectomy (LA) and open appendectomy (OA) for perforated
appendicitis in children. Methods: A
retrospective database search of consecutive cases of children with a diagnosis
of perforated appendicitis who underwent OA or LA by the first author or were
operated under his supervision diagnosed with appendicitis between 2011 and
2014 and who underwent surgery as treatment was conducted.Results: Seventy-eight
patients were included in our study. Forty-two and 36 patients underwent LA and
OA, respectively. One case was converted from LA to OA. There was no
statistically significant difference at superficial incisional surgical-site
infections and IAA between groups but drain placement ratio and length of
hospital stay was higher in OA group.

Conclusions:
The lack of difference
in postoperative incidence of IAA supports the idea that LA does not increase
the risk of IAA in perforated appendicitis. Although LA for perforated
appendicitis in children has been intensely debated, our findings indicate that
laparoscopic procedures performed by experienced pediatric surgeons will
decrease the risk of complication and conversion to OA. Laparoscopy in children
is a safe procedure for perforated, complicated appendicitis.
THE PHILOSOPHY ON INSTITUTIONAL CHANGES OF STATE ISLAMIC HIGHER EDUCATION (PTKIN) INTO UNIVERSITY
Authors: Esha Muhammad In'am
Published: August 2018

A policy can is inseparable  from the philosophy that underlies and influences its actors. Institutional changes to university, we called as universitization, that occurred in State Islamic Higher Education (SIHE/PTKIN) can not be separated from the philosophy that surrounds it. Learning from the experience of Universitas Islam Negeri Maulana Malik Ibrahim Malang, as one of the IAIN that changed its institutional status from State Islamic College (SIC/STAIN) into the State Islamic University (SIU/UIN) can be reconstructed based on philosophy which became the foundation of the institutional change policy. The study found that the basic ideas are the universality of Islam, the philosophy of tarbiyah ulul albab, and the integration of science. The philosophy of institutional change can not be separated from the long history of reform thinking in Islam.
¿Puede la enseñanza de la Historia cambiar las representaciones sociales de los chicos y chicas?
Authors: Olmos Vila Rafael
Published: August 2018

En este artículo se indaga sobre las representaciones sociales de chicos y chicas de 16 a 18 años ante la realidad política y económica actual: las causas, los culpables y soluciones a la crisis económica. Los y las adolescentes cursan estudios de Bachillerato en dos grupos del mismo centro educativo y provienen de contextos socioeconómicos similares, sin embargo, uno de los dos recibe las clases de Historia Contemporánea (Grupo A) y el otro no cursa la asignatura (Grupo B). Se recopila la información a partir de un cuestionario de preguntas sobre la crisis, en torno a imágenes de la actualidad socioeconómica y comentarios de fuentes históricas sobre las crisis de 1873, 1929 y 2008. Los resultados muestran que el grupo que recibe las clases de Historia es más crítico a la hora de analizar los problemas actuales de la sociedad, además de establecer analogías con el pasado para explicar las situaciones del  presente, mientras que el otro grupo reproduce las opiniones de los medios de comunicación.
Voces que narran el pasado reciente: La enseñanza de la memoria y la historia desde una experiencia docente en básica primaria
Authors: Gómez Sepúlveda Diana María
Published: August 2018

Este artículo presenta los alcances de una experiencia docente sobre la enseñanza de la historia y la memroia con estudiantes del grado quinto de básica primaria. En la primera parte, abordo el lugar de la experiencia, la cual movilizó el quehacer docente hacia nuevas búsquedas y diálogos entre saberes, sujetos y realidades. En la segunda parte, se analiza la enseñanza de la historia y la memoria. La primera aún cautiva de su herencia, a partir de la recordación de ciertos hechos y personajes, con recientes transformaciones en su didáctica y legislación escolar; por su parte, la enseñanza de la memoria, de ingreso más reciente en la escuela, asume la temporalidad a través de la palabra, el sentir y la corporeidad del otro, cuyas versiones pueden ser oiciales, polémicas u omitidas. En la última parte, se narra la  experiencia docente cuyo eje articulador fue el 9 de abril de 1948 y la toma y retoma al Palacio de Justicia, proponiendo desde la sistematización de experiencias, la memoria de las vivencias, para la construcción  de conocimientos compartidos a través de una lectura relexiva y sensible de lo acontecido.
Memoria y enseñanza de la historia del narcotráfico y las guerras esmeralderas. El valor sociocultural del corrido prohibido
Authors: Almonacid Buitrago Julián Alveiro , Burgos Dávila César Jesús
Published: August 2018

El objetivo de este artículo es analizar una práctica de la enseñanza de la historia a nivel bchillerato entorno a la violencia, las guerras esmeralderas y el narcotráico en la Provincia del Rionegro, Colombia. Se trabajó en el aula desde el método etnográico con la propuesta de la doble relexividad, la enseñanza de historia con memoria y las técnicas de observación-inserción. Se retomaron los corridos prohibidos como recurso didáctico para generar conciencia histórica con la rememoración de conlictos situados. Los resultados se organizaron en tres categorías: a) la función del corrido como memoria viva y su valor didáctico; b) memoria comunicativa y entornos cotidianos de la música; c) otros lugares de memoria.  Concluimos que: los corridos prohibidos ofrecen memorias sociales alternativas para la enseñanza de la historia en Colombia, que ayudan en la construcción de sentido histórico, favorecen la comprensión del postconlicto y la generación de paz territorial.
Los fines de la historia en el siglo XXI
Authors: Barros Carlos
Published: August 2018

En esta ocasión no entendemos por «ines de la historia» las terminaciones de la historia al modo ilosóico de Hegel, Marx y otros 2 sino los objetivos históricos que partes de la humanidad van construyendo y expresando en este nuevo siglo en marcha, reales, que conllevan a menudo representaciones imaginarias que movilizan a sectores amplios de la sociedad. Vamos pues a deinir y analizar 3 en este siglo XXI ines de la historia ya existentes, a las puertas de la tercera década, sostenidos -o impuestos- por fuerzas económicas, políticas, sociales o religiosas en ámbitos internacionales, con la ventaja de la inmediatez.
ANTROPOLOGIA, CULTURA E INDIVÍDUO: REFLEXÕES SOBRE IDENTIDADE
Authors: Feldens Dinamara Garcia , Fusaro Luana Garcia Feldens , Carvalho Lucas de Oliveira
Published: August 2018

O presente artigo tem o objetivo de fazer uma discussão em torno de alguns conceitos e de teóricos da Antropologia sobre identidade cultural. Para isto, aponta questões referentes à noção de sociedade, de cultura e de indivíduo. Estes elementos ajudam a compor o corpo daquilo que entendemos ser a noção de identidade cultural. Busca, também, fazer uma reflexão sobre a necessidade do estudo e da pesquisa dentro dessas temáticas, da constante reflexão sobre os métodos e ferramentas usados nas análises e do  processo contínuo de transformação dos aspectos culturais e identitários.
FORMAÇÃO INICIAL E DOCÊNCIA NA EDUCAÇÃO INFANTIL
Authors: Côco Valdete
Published: August 2018

In the context of the challenges related to teacher training, this article results from an articulated research to accompany in a Pedagogy Course (2006 – 2017), focusing on the perspectives of action of the students with attention to early childhood education. With Bakhtinian theoretical-methodological references, it discusses the axes linked to formation, the experiences of performance and the requirements for teaching work implicated in the positioning of children's education in the horizon of professional choices. From the data, it reports the presence of early childhood education in the repertoire of professional possibilities, marked by meanings of discredit, signaling the recognition of an action field which needs to advance in its affirmation and social recognition.
Apresentação
Authors: Morato Edwiges Maria , Tavares Eliana Silva , Cruz Fernanda Miranda
Published: August 2018

Temos a satisfação de levar a público este número temático dos “Cadernos de Estudos Lingüísticos” composto de 14 papers relativos às sessões de comunicação da I CONFERÊNCIA LINGÜÍSTICA E COGNIÇÃO, realizada no Auditório do Instituto de Estudos da Linguagem (IEL/UNICAMP), de 22 a 24 de abril de 2003. A I CONFERÊNCIA foi uma iniciativa de agregar pesquisadores brasileiros que se dedicam à problemática cognitiva, destacando as contribuições e as reflexões do campo lingüístico relativamente ao tema, identificando a inserção da Lingüística na agenda atual dos estudos sobre cognição. Os pesquisadores que estiveram presentes no evento têm trabalhado com o tema a partir de distintos domínios lingüísticos (Semântica, Pragmática, Neurolingüística, Psicolingüística, Lingüística Textual, Análise da Conversação, Lingüística Cognitiva, etc), destinando boa parte de seu esforço intelectual a arbitrar a relação entre linguagem e cognição.
O conhecimento de colocações no processamento de relações anáforas
Authors: Rocha Marco
Published: August 2018

This paper presents a corpus-based approach to the study of anaphora. A sample demonstratives collected in a dialogue corpus is analysed with the purpose of investigating collocations and patterns of texts, associating anaphoras with antecedents by means of a data-driven classification wich attempts to capture cognitive processes.
Compreensão de descrições definidas e de anáforas associativas
Authors: Cafiero Delaine
Published: August 2018

In this study, we observe how children and adults build thematic continuity when reading expositive texts of scientific diffusion. We deal with the interference of both reading experience and definite noun phrases organization in achieving reading comprehension. It is our intention to answer questions such as: to what extent do definite noun phrases and associative anaphora interfere in reading, making information processing a more complex activity? Following Marcuschi e Koch, 1998; Marcuschi, 1998; Koch, 1998; Koch, 2000 e 2002; Apothéloz e Reichler-Béguelin, 1995; Mondada e Dubois, 1995, we consider that the activity of constructing reference is a discursive one and that the referents of anaphoric expressions are built by the cognitive-discursive action of subjects in communicative situations.
Construção do espaço virtual: interação mediada por ambientes de chat e estratégias cognitivas de localização
Authors: Melo Lafayette Batista , Meira Luciano
Published: August 2018

This work examines the notion of space on the Internet, especially in chat rooms. The peculiarities of virtual interactions and their language are examined in this research. Five concepts explain how virtual space is created based on an analysis unit which evolves localization textual linguistics resources, mainly deitics.
Marcador negativo final no português brasileiro
Authors: Fonseca Hely Dutra Cabral
Published: August 2018

This study analyses the final negative marker in Brazilian Portuguese (BP), trying to find for such a phenomenon an adequate explanation within the theoretical background adopted - the Principle and Parameters Theory and its updated research on negation.
Botswana’s Ipelegeng Programme Design and Implementation: Reduction or Perpetuation/Entrenchment of Poverty?
Authors: Nthomang Keitseope
Published: August 2018

Botswana launched a Public Works Programme (PWP) – commonly known as Ipelegeng (IP) in 2008 as one, among a myriad of initiatives meant to reduce poverty for sustainable development in marginalized contexts. Research shows that well designed and properly implemented (PWPs) have potential to reduce poverty among the poor by creating the much needed employment opportunities and other forms of sustainable livelihood. This paper assesses the contribution of Ipelegeng towards poverty reduction in Botswana. A nationwide review of Ipelegeng was conducted in 2012. In-depth interviews and focus group discussions (FGDs) were conducted at 23 research sites followed by a detailed analysis of data collected. Evidence based on both empirical and documentary analysis suggests that although Ipelegeng has made some contribution to poverty reduction, its successes are far outweighed by its failures. Poor programme designs and flawed implementation has been blamed for Ipelegeng failure to deliver on set objectives. This paper concludes by asserting the need for the development of robust Ipelegeng designs and implementation tools that will ensure the realisation of sustained poverty reduction outcomes.
Design and Verification of a Security Policy to Defense DDoS Attack for Cloud Robot
Authors: Liu Boyi , Cheng Jieren , Li Yijie , Tang Xiangyan , Chen Jiquan
Published: August 2018

Cloud robot is becoming popular and security of cloud robot is important. However, the researches of cloud robot safety are a few. This work develops a security policy to defense DDoS attack of cloud robot. In this policy, complex, but accurate calculation models are deployed on the cloud, simple but efficient calculation models are deployed on the robot. In the cloud, there are master server and standby server. The master server transfers parameters of complex but accurate models to the standby server periodically and the master executes the start-stop backup policy. Specifically, this work proposes and proves an algorithm to dynamically adjust the interval of parameter transfer. According to a PDRA feature of Netflow, when DDoS attacks, the master server sends warning signals to the robot and standby server. The robot runs local models to avoid stopping work until it is connected to the standby server. Then, standby server provides service to the robot until the master server recover. Finally, this work implemented a gesture recognition cloud robot based on convolutional neural network, hidden Markov model and PDRA feature of Netflow to verify the policy. Experiment shows that the security policy to defense DDoS attack for cloud robot is effective.
Scattering Theory of Graphene Grain Boundaries
Authors: Romeo Francesco , Di Bartolomeo Antonio
Published: August 2018

The implementation of graphene-based electronics requires fabrication processes able to cover large device areas since exfoliation method is not compatible with industrial applications. Chemical vapor deposition of large-area graphene represents a suitable solution having the important drawback of producing polycrystalline graphene with formation of grain boundaries, which are responsible for limitation of the device performance. With these motivations, we formulate a theoretical model of graphene grain boundary by generalizing the graphene Dirac Hamiltonian model. The model only includes the long-wavelength regime of the particle transport, which provides the main contribution to the device conductance. Using symmetry-based arguments deduced from the current conservation law, we derive unconventional boundary conditions characterizing the grain boundary physics and analyze their implications on the transport properties of the system. Angle resolved quantities, such as the transmission probability, are studied within the scattering matrix approach. The conditions for the existence of preferential transmission directions are studied in relation with the grain boundary properties. The proposed theory provides a phenomenological model to study grain boundary physics within the scattering approach and represents per se an important enrichment of the scattering theory of graphene. Moreover, the outcomes of the theory can contribute in understanding and limiting detrimental effects of graphene grain boundaries also providing a benchmark for more elaborated techniques.
Influence the Fillers Orientation: A Short Review
Authors: Mohd Radzuan Nabilah Afiqah , Sulong Abu Bakar , Rao Somalu Mahendra
Published: August 2018

Bipolar plates significantly contribute in the development of the polymer electrolyte membrane (PEM) fuel cells technology due to their ability to produce high electrical conductivity based on type of materials used. Mismatching of inappropriate materials and manufacture may lead to the inferior performance of PEM fuel cells. Hence, material development was determined crucial to balance the overall performance of PEM fuels including the mechanical properties and electrical conductivity of the materials. Studies on conductive polymer composites (CPCs) offered filler orientation as an alternative method to enhance the overall performance of bipolar plate. Filler orientations permit an excellent conductivity network formation while controlling the filler alignment based on required applications. This paper reviewed various studies of filler orientations including materials used and methods of manufacture of CPC materials for the effective development of bipolar plate.
Two-Thirds of Seniors Like Using a Wellness App
Authors: Robinson John , Gorski Gabriel , Pugh Suzanne
Published: August 2018

Objective: Health/wellness applications on mobile devices (Apps) may positively affect the health of seniors (persons age 65+). But for an App to promote health in its target audience, it must achieve meaningful use. Method: For one and a half years, residents at a Life Plan Community (mean age 86) used a wellness App running on iPad. In a digital survey, residents rated their overall satisfaction with the App on a scale from 1 (strongly dislike) to 10 (strongly enjoy). Results: User satisfaction (96 respondents of 252; 38% response rate) was distributed with maximum 8, median 7, mean 6.6, and standard deviation 2.3. Discussion: The results suggest that it is feasible to inspire seniors to pursue whole-person wellness using an App: technology may promote “active aging.”
Effects of NaCl applications on root growth and secondary metabolite production in madder (Rubia tinctorum L.) root cultures
Authors: ARAS AŞCİ Özlem , DEMİRCİ Tunhan , GÖKTÜRK BAYDAR Nilgün
Published: August 2018

Madder
(Rubia tinctorum L.) is a valuable
plant rich in anthraquinones having dying properties and biological activities.
This study was carried out to determine the effect of sodium chloride (NaCl) applications
on the root growth and secondary metabolite accumulation in adventitious roots
of madder. For this aim, adventitious roots derived from stem explants in in vitro conditions were cultured in MS
medium containing different concentrations of NaCl (0, 1, 2, 3 and 4 g/l) for 7
days. Then roots were evaluated in terms of root growth index, total AQ,
alizarin, purpurin and total phenolic contents. Based on the results, root
growth decreased in line with the elevating level of NaCl while secondary
metabolite accumulation significantly increased with NaCl applications compared
to the controls. It was determined that NaCl at 3 g/l concentration was the
most effective application in terms of total AQ, alizarin, purpurin and
phenolic accumulation.
On the self-excitation of vibrations of a boring bar in the process of deep boring
Authors: Igumnov A. Leonid , Metrikin S. Vladimir , Lyubimov K. Aleksandr , Ovchinnikov F. Viktor , Grezina V. Aleksandra
Published: August 2018

The article presents equivalent mathematical models of a boring bar designed for deep boring, in a distributed and a discrete idealizations. A mathematical model describing coupled torsional and lateral vibrations of a boring bar is constructed in the form of a set of differential equations with lagging of the cutting process dynamics. A methodology for studying stability in small of the deep boring process using a characteristic quasi-polynomial is presented. The numerical-analytical results of the studies made it possible to discern stability regions in the parameter space of the model and to obtain relations for maximal cutting depth as a function of geometrical and technological parameters (stiffness, cutting velocity, feeding etc.) of the boring bar considered. It is noted that the obtained numerical-analytical results are in good agreement with experimental data.
Optimization and evaluation of three-dimensional high-rise concrete structure equipped by TMD with considering the soil-structure interaction effect
Authors: Mortezaie Hamid , Rezaie Freydoon
Published: August 2018

During the past two decades, countless and valuable studies have been conducted on passive seismic control of structures on two-dimensional shear frame model and a few on three-dimensional shear frames. To simulate the actual behavior of buildings with higher accuracy, it is necessary to use more realistic and more complex models in evaluating the seismic performance and controller design. In this study, two indicators related to the structural damage and efficiency control have been used for the seismic control of the structure considering the soil-structure interaction (SSI) effect. with a detailed and complex three-dimensional finite element model in the OpenSees software, a twenty-story concrete structure is designed by the performance based plastic design (PBPD) method; the optimization process of control system and structure performance under the circumstances taken into account at the design stage have been studied. Seismic performance subjected to three acceleration records of far-field earthquake has been investigated and to consider the effects of SSI, the simplified cone physical model has been used. Results indicate that according to the type of soil for which the structure is designed, Tuned Mass Damper (TMD) cannot be reliably used to reduce lateral displacement of the structure, but TMD shows a proper performance in reducing inter-story drift
Deployment accuracy analysis of cable-strut deployable mechanism with joint clearances and forces constrained
Authors: Lin Fei , Chen Jinbao , Chen Chuanzhi , Chen Meng , Dong Zirui , Zhou Jinhua
Published: August 2018

The effects on deployment accuracy of joint clearances and forces acting on the deployable mechanism are investigated. “A virtual massless link” is used to describe the joint clearance of the mechanism in the free state. Aiming at the following problems of multi-loop linkages mechanical system such as loop constraints coupling and complicated topology structure, the geometric relationships and the deploying error equations of deployable mechanism are provided based on Denavit-Hartenberg matrix by splitting multi-loop linkage into 3 single-loop linkages. In addition, with consideration of forces, “a virtual massless rope” is used instead of “virtual massless link” to describe the joint clearance for avoiding the extra singularities. And the criterion of mechanism in stable configuration is obtained by weighting coefficient method on the basis of minimum potential principle. The solving procedure of deploying error equations in the state of forces constrained is presented by combining Monte-Carlo method with genetic algorithm, it is an effective solution for the nonlinear objective function with multiple constraints and strong coupling. The results indicate that the appropriate forces acting on mechanism produce a significant effect on improving repeat accuracy, and the absolute accuracy can be improved with the future error compensation.
Analysis of coupling vibration characteristics of electrically driven pile hammer linkage system
Authors: Liao Gaohua , Lai Xin
Published: August 2018

In order to solve the problem that electromechanical coupling had influences on the control effect of multi-pile hammers linkage, the coupling influence rules were studied. With the complex system of hammer-pile-soil being simplified, the dynamic model was constructed for the two pile hammers vibration system. The mathematical equations of systemic electromechanical coupling were established. Based on the Hamilton principle, synchronous operation conditions and system stability were established. Simulation model was developed with MATLAB/Simulink for numerical simulation. The electromechanical coupling processes and the basic system rules were obtained under different electrical motors’ speeds, the initial phase differences, soil parameters and fixing parameters. It could be found that electromechanical coupling might result in self-synchronization under given conditions. Finally, the mathematical model’s validity, theoretical derivation and simulation results were proved by some experiments. The analytical conclusions of electromechanical coupling rules provide the theoretical evidence for making control strategy on electric control linkage mode, and the basis for related engineering applications and experiments.
A unified Gram-Schmidt-Ritz formulation for vibration and active flutter control analysis of honeycomb sandwich plate with general elastic support
Authors: Lin Huagang , Cao Dengqing
Published: August 2018

An admissible function constructed by orthogonal polynomials is presented to investigate the vibration and active flutter control of Honeycomb sandwich plate with general elastic support in a supersonic airflow. The control strategies based on the displacement feedback and LQR method are applied by means of pasting the piezoelectric material on the surface of the plate structure. Employing the first-order piston theory to describe the aerodynamic loads, the governing equation of plate system with the piezoelectric actuator is established based on the Hamilton principle. The mode shapes are obtained using the admissible functions, which are a set of characteristic orthogonal polynomials generated directly by employing the Gram-Schmidt process, and the general elastic constraint is modeled using the artificial spring technology. The frequency and mode shape under different boundary are calculated by Rayleigh-Ritz method. The validity of the proposed approach is confirmed by comparing the results with those obtained from FEM and literatures. The phenomenon of mode jumping is observed with the increase of the aerodynamic pressure. The study of active control shows that, the increasement of displacement feedback gain improves the critical dynamic pressure.
Analysis on vibration response of structure of hydrocyclone under action of internal spiral flow
Authors: Li Sen , Li Xinyan , Wang Zunce , Xu Yan , Yan Yuejuan
Published: August 2018

The numerical modeling and experimental test are carried out to analyze the effects of the coupling between the structure of the hydrocyclone and the internal spiral flow on the structure motion of the hydrocyclone, and the interaction of the fluid and the structure is fully considered. The model of fluid structure interaction (FSI) of the hydrocyclone with variable diameter circular pipe is presented in this paper, and the related numerical simulation and experimental research are also carried out. Using the established fluid-structure interaction model, the dynamic characteristic of the hydrocyclone under the FSI condition is discussed, which obtained the vibration characteristics and the inter facial stress distribution characteristics. The maximum value of deformation is at the small cone-shaped part and the tail part connection of the hydrocyclone. The inter facial stress distribution is showed non symmetric state, and the maximum value of stress is located in the large cone-shaped part. After compared analysis the numerical results and the measured results, the numerical simulation is the same as the distribution trend of the test results at the maximum acceleration and position. The above analysis shows that the two-way FSI calculation model of hydrocyclone with variable diameter circular pipe is reasonable, and the motion characteristics of the structure are changed under the interaction of fluid and structure each other. The influence of the motion of the structure on the flow field of the hydrocyclone cannot be ignored. This is a problem that should be considered in the future design and application of hydrocyclone.
Free longitudinal vibrations of functionally graded tapered axial bars by pseudospectral method
Authors: Pillutla Sri Harikrishna , Gopinathan Sudheer , Yerikalapudy Vasudeva Rao
Published: August 2018

In this work, the problem of free longitudinal vibration of rods with variable cross-sectional area and material properties is investigated using the pseudospectral method. With the gradation of material properties like modulus of elasticity and mass density in the axial direction, the results corresponding to a functionally graded axial bar are obtained using the proposed pseudospectral formulation. The pseudospectral formulation used is relatively easy to implement and powerful in analyzing vibration problems. With the help of several numerical examples, the non-dimensional natural frequencies of rods obtained using the pseudospectral method are compared with those obtained by the analytical solution, generalized finite element method, the discrete singular convolution method and differential transformation method. The numerical results obtained show that the proposed technique allows boundary conditions to be incorporated easily and yields results with good accuracy and faster convergence rates than other methods.
Free vibration of functionally graded SWNT reinforced aluminum alloy beam
Authors: Selmi Abdellatif , Bisharat Awni
Published: August 2018

Aluminum alloy (Al-alloy) reinforced with Single walled carbon nanotubes (SWNT), which represents an important industrial application, is studied. Different beam theories (BT) are applied to investigate functionally graded (FG) beams made of Al-alloy reinforced with randomly oriented, straight and long SWNT. The Rayleigh-Ritz method is used to estimate the beam frequencies. First, the Mori-Tanak (M-T) homogenization technique is used to predict the effective material properties of the beams. Second, results from BT are verified against finite element (FE) simulations. Next, a parametric study is carried out in order to investigate the influence of SWNT volume fractions, SWNT distributions and beam edge-to-thickness ratios on the vibration behavior of the FG beam. Results demonstrate the important effect of the studied parameters on the dynamic behavior of the FG SWNT reinforced Al-alloy composite beams.
The Baglihar difference and its resolution process - a triumph for the Indus Waters Treaty?
Authors: Salman Salman M. A.
Published: August 2018

On January 15, 2005, Pakistan approached the World Bank asking the Bank to appoint a Neutral Expert to address a “difference” which had arisen with India under the Indus Waters Treaty. The difference related to the Baglihar hydropower plant which was under construction by India. The Bank appointed a Neutral Expert four months later, following lengthy exchanges with the two parties. On February 12, 2007, about 20 months after his appointment, the Neutral Expert issued his decision on the difference. This article reviews the main provisions of the Treaty, examines the process for the appointment and for the decision of the Neutral Expert, and analyzes the decision.
Responsabilidad social empresarial en las empresas del sector minorista
Authors: Quintero-Arango Luis Fernando
Published: August 2018

El presente artículo es derivado de la investigación realizada en tiendas del sector minorista de la ciudad de Medellín, Colombia. La finalidad de la investigación fue considerar cómo la Responsabilidad Social Empresarial tiene un impacto frente a los clientes y los grupos de interés. La investigación se realizó mediante una metodología cualitativa, a través de un enfoque hermenéutico. Cabe señalar que las fuentes teóricas tienen una fundamentación sobre la gestión de la Responsabilidad Social Empresarial, aportando a una construcción empresarial de forma integral y estratégica. No obstante, se identificó que las empresas del sector minorista no están convencidas de que actuar conforme a la Responsabilidad Social Empresarial, aporta a su reputación y genera un impacto positivo frente a sus clientes y grupos de interés. Los resultados del estudio sugieren dos propuestas para implementar la responsabilidad social en las empresas de este sector; primero se plantea considerar desde la planeación estratégica de la empresa definir una política de Responsabilidad Social dentro de la organización, y la segunda, es identificar la manera en que la Responsabilidad Social aporta valor de marca y reputación frente a los clientes y demás grupos de interés.