bluuebunny/crossref_metadata_2025 huggingface dataset:
Hiperparatiroidismo primario por adenoma paratiroideo gigante
Authors: Baltodano Acuña Adriana , Mora Segura Esteban , Solís Ramírez Diego Francisco
Published: January 2019

El adenoma paratiroideo es un tumor no canceroso de las glándulas paratiroides, que provoca un aumento en los niveles de la hormona paratiroidea. Esta hormona se encarga de regular los niveles de calcio, fósforo y vitamina D en sangre y huesos. Su triada clásica se caracteriza por aumento de los niveles de la hormona paratiroidea, hipercalcemia e hipofosfatemia. Esta entidad es la causa principal de hiperparatiroidismo primario en un 85 % de los pacientes. El tratamiento estándar es la resección quirúrgica de las glándulas paratiroideas anormales. El siguiente caso es el de una paciente femenina de 52 años que presenta hiperparatiroidismo primario, secundario a un adenoma paratiroideo, el cual resolvió posterior a unaparatiroidectomia.
Ejercicios hipopresivos: prescripción, técnicas y efectividad
Authors: Flores López María Gabriela , Uclés Villalobos Vanessa
Published: January 2019

Los ejercicios hipopresivos son una técnica de fortalecimiento muscular beneficiosa para la faja abdominal pero sin efectos negativos sobre el suelo pélvico, que persigue mejorar el control y las cualidades musculares de los programas de reeducación del periné incluidos en la llamada Fisioterapia del Suelo Pélvico (SP) o Fisioterapia Uroginecológica. Este tipo de terapia beneficia a las patologías de disfunción del suelo pélvico o como una medida preventiva del mismo. La realización de ellos durante un período de aprendizaje estructurado, dan como resultado, descenso de la presión intraabdominal y la activación refleja de los músculos abdominales y del suelo pélvico, consiguiendo a largo plazo un aumento del tono en ambos grupos musculares; siendo beneficioso para la faja abdominal. El objetivo del presente artículo es realizar una revisión bibliográfica del tema e indicaciones generales para la prescipción de la terapia hipopresiva.
Riesgo de endocarditis bacteriana asociado a modificaciones corporales
Authors: Alvarado Arce Edwin , Chacón Rodríguez Angie Karina , Mesenguer Wong José Pablo
Published: January 2019

Las modificaciones corporales, incluidas piercings, tatuajes e implantes subcutáneos han aumentado sustancialmente su popularidad en épocas recientes. Representan una disrupción de las barreras naturales corporales y un riesgo elevado de infecciones, tanto locales como distantes, como es el caso de endocarditis infecciosa, predisponiendo el torrente sanguíneo a patógenos externos. Este artículo corresponde a un reporte de caso de un paciente de 35 años con múltiples modificaciones corporales e historia de uso de drogas intravenosas, quién se presentó con endocarditis en la válvula aórtica, causando insuficiencia severa de la misma. Se presenta, además, una revisión bibliográfica de la relación entre endocarditis infecciosa y piercings, tatuajes u otras modificaciones corporales.
Atención de pacientes con Metástasis Óseas en rehabilitación
Authors: Uclés Villalobos Vanessa , Espinoza Reyes Roison , González Rodríguez Sirlene
Published: January 2019

La enfermedad ósea metastásica es una condición frecuente y la causa más común de dolor asociado alcáncer. Con la mejora en los tratamientos del cáncer se ha prolongado la supervivencia de los pacientes y por lo tanto también han incrementado el número de pacientes con metástasis óseas. La profilaxis de las posibles complicaciones es importante ya que con la mayor causa de morbilidad y disminución de la calidad de vida en los pacientes con cáncer. Siendo la Rehabilitación clave para el mantenimiento de la funcionalidad en los meses de supervivencia del paciente, previniendo el encamamiento y manteniendo la funcionalidad.
Rehabilitación del paciente con tumor cerebral
Authors: Uclés Villalobos Vanessa , Segura Corrales Pablo , Espinoza Reyes Roison Ali
Published: January 2019

Los tumores del Sistema Nervioso Central (SNC) tienen una muy alta probabilidad de producir efectos discapacitantes a largo plazo; a causa del propio tumor (tamaño, localización, invasividad), así como por los efectos de su tratamiento, incluyendo las complicaciones quirúrgicas, efectos neurotóxicos de la radiación y la quimioterapia.La rehabilitación al paciente con diagnóstico de tumor cerebral se enfoca en calidad de vida y dignidad, así como en nuevas oportunidades para un proyecto de vida, y ha mostrado buenos resultados. Dentro de los objetivos de esta terapia se busca obtener una máxima función física, social, psicosocial, y vocacional a pesar de los límitesimpuestos por la enfermedad o sus tratamientos.
Neumotórax Oculto Una Revisión Dinámica
Authors: Sánchez González Luis , Gómez Herrera Wilfredo
Published: January 2019

El neumotórax, en el contexto de barotrauma ocurre frecuentemente, con efectos potencialmente letales. El neumotórax oculto es la presencia de neumotórax no diagnosticado por radiografía convencional posteriorantero, pero si por otros métodos como ultrasonido y tomografía. Su epidemiología varia, observándose un incremento en la incidencia de hasta un 78%. Las condiciones adversas en la atención del paciente politraumatizado incrementan la misma. El ultrasonido es un método eficaz y oportuno para el diagnóstico de neumotórax oculto, sobre todo en la valoración inicial del paciente inestable. La vanguardia en sensibilidad y especificidad es propia de la tomografía, por lo que ante la inquietud diagnóstica y pronta estabilidad hemodinámica, será el método de elección. El tratamiento del neumotórax oculto ha sido controversial, sin embargo, aunque el manejo expectante es una opción terapéutica eficaz, aquel paciente bajo ventilación mecánica requerirá inserción de tubo torácico. Ha de considerarse el tipo de neumotórax oculto según la clasificación tomográfica, para tomar una decisión terapéutica temprana y oportuna
Neostigmina en el tratamiento de la Distrofia Muscular Progresiva: Estudio de 6 pacientes, 4 con seguimiento de 13 años
Authors: Álvarez Rojas Martín , Álvarez Alvarado Ana María , Barrantes Jiménez Max
Published: January 2019

Estudio realizado durante 13 años, en seis pacientes con distrofia muscular. Dos de ellos asociados con neuropatía y cuatro con nervios sanos. El objetivo de la investigación es demostrar el uso de la neostigmina en el tratamiento de la distrofia muscular progresiva, como competidor reactivador y facilitador de la glicolización de los receptores alfa distroglicano. Los 6 pacientes iniciaron con neostigminade 3 a 5 tabletas al día. Con este tratamiento se mostró un aumento de la fuerza muscular en un mes. Cuatro de los pacientes experimentaron un aumento de fuerza muscular que se mantuvo por 13 años con una mejor calidad de vida e iguales oportunidades que un individuo saludable. La fisiopatología de la distrofia muscular progresiva es el bloqueo genético a la glicolización de los receptos alfa distroglicano que produce debilidad muscular. La neostigmina es utilizada como inhibidor de la acetilcolinesterasa en el tratamiento de la Miastenia Gravis (acción indirecta). La acción directa es competidor y desbloqueador del receptor, esto facilita la glicolización, aumentando la fuerza muscular.
Fatores de risco do diagnóstico de enfermagem: risco de infecção em pacientes com a Síndrome da Imunodeficiência Adquirida hospitalizados
Authors: Marques Cristiane Da Câmara , Pinheiro Barreto Vanessa , De Souza Martins Elaine , Pereira de Medeiros Isabela , Andreza de Oliveira Gomes Walida , Rodrigues Feijão Alexsandra
Published: January 2019

O objetivo desta investigação é fueidentificar na literatura os fatores de risco do diagnóstico de enfermagem Risco de Infecção presentes em pacientes com Síndrome da Imunodeficiência Adquirida hospitalizados. Trata-se de uma revisão integrativa, realizada nas bases de dados PubMed, SCOPUS,Cumulative Index to Nursing and Allied Health Literature, Literatura Latino-Americana em Ciências de Saúde, Scientific Electronic Library Online.Foram selecionados 10 artigos que atenderam aos critérios de inclusão. Identificaram-se estudos de caso-controle, ensaio clínico, transversal, coorte e descritivo. Os resultados evidenciaram cinco dos 19 fatores presentes no diagnóstico de enfermagem “Risco de infecção”, indicados na North American Nursing Diagnosis Association, sendo eles: imunossupressão (considerado o mais prevalente, presente em 70% dos estudos), desnutrição, alteração do peristaltismo, procedimento invasivo e enfermidade crônica. Conclui-se que o conhecimento sobre os fatores de risco que uma população estudada está suscetível, oferece um norteamento para uma assistência direcionada e eficaz, uma série de riscos diferentes.
Nível de atividade física e qualidade de vida de profissionais bancários
Authors: Souza Júnior Edison Vitório de , Cunha Caroline Valois , Oliveira Bruno Gonçalves de , Bomfim Eliane Dos Santos , Boery Rita Narriman Silva de Oliveira , Boery Eduardo Nagib
Published: January 2019

Este estudo teve como objetivo descrever o nível de atividade física e a qualidade de vida de bancários. Trata-se de um estudo quantitativo e descritivo de corte transversal realizado com 36 bancários da cidade de Jequié, Bahia, Brasil. Para coletar o nível de atividade física adotou-se o Questionário Internacional de Atividade Física (IPAQ) que avalia a prática dessa atividade no período de 1 semana. Para avaliar a Qualidade de Vida utilizou-se o WHOQOL-bref que considera quatro domínios para avaliação: físico, psicológico, relações sociais e meio ambiente. Os dados foram tabulados e analisados por meio de estatística descritiva simples no software Statistical Package for the Social Sciences (SPSS) versão 21.0. Entre os resultados, constatou-se que 66,7% (n=24) dos bancários eram insuficientemente ativos. Quanto à avaliação dos domínios da Qualidade de Vida, observou-se que os bancários apresentaram melhor percepção de Qualidade de Vida no domínio físico (82,1) e pior percepção no domínio meio ambiente (59,3). Conclui-se que, a partir desse estudo, foi possível à compreensão sobre o nível de atividade física, em que houve predominância de trabalhadores insuficientemente ativos, sendo que este fator pode estar influenciando na sua qualidade de vida no domínio físico e meio ambiente.
FEATURES OF THE TECHNICAL OBJECTS CONTROL WITH REGISTRATION THEIR WEAR-OUT
Authors: Voinova S
Published: January 2019

The operation of technical objects is subject to the regulatory conditions established by their manufacturer. Regime of regulatory conditions keeping needs to be controlled. A new technical object at the time of commissioning has an initial, maximum level of technological efficiency of operation, including ecological, economic and general technical components, and has an initial, complete working capacity resource too. During operation, the technical object wears-out, its technological efficiency is reduced. In accordance with the international standard and the standard of Ukraine, a technical object that has exhausted a resource is subject to decommissioning and replacement with a new technical object, since at a level of technological efficiency that is less than the minimum, the use of technical object is inexpedient. However, in the current difficult economic conditions in Ukraine, the replacement of worn-out equipment with a new one is impracticable. Further use of worn-out equipment is inevitable. To control a worn out object, complex automation is required. The technical object is studied in this direction from three positions. The first is to study the process of wearing-out. The second is the prediction of wearing-out dynamics. The third is the object control in the process of its wearing-out. The development of the theory and practice of worn out objects automating leads to the formulation of new tasks. With long-term operation of the equipment, it is necessary to periodically adjust its characteristics. It is necessary to create adaptive automatic control systems that take into account the degree of equipment wear-out and conditions of its operation. It is important to establish the patterns of influence of the current state of the equipment and the operating conditions on its residual resource. A productive way to increase the efficiency of worn-out equipment is its renovation by implementing measures that increase the level of efficiency of the most worn-out elements of technical objects. The technical objects control with registration their wear-out will ensure compliance with the regulations for their operation.
CHANGE OF MICROBIOTAS OF MAIZE-BASED EXTRUDED PRODUCTS WITH VEGETABLE ADDITIVES DURING STORAGE
Authors: Bunyak O. , Sots S. , Egorova A. , Valevskaya L. , Evdokimova G.
Published: January 2019

Recently, sugar maize has become more and more widely used for the production of new types of food. Its use in the production of cereal products for babies makes it possible to use no sugar in their composition, switch to the production of dietary and prophylactic products, which acquires high importance against the background of “rejuvenation” of diabetes and the manifestation of other nutritional diseases. To enhance the consumer properties of the finished product, to give it the appropriate taste, colour and aroma, as well as to enrich with vitamins, mineral components, flavonoids, phytoncides and glucosides, the following raw materials were selected as the main components for their preparation: maize grains, hullless barley grains in the ratio 1:1, liquorice root (2–4%), carrot roots (2–4%). The article presents the results of microbiota studies of extruded grain products with plant additives during storage. The obtained samples were stored in the laboratory in polypropylene, plastic packaging and cardboard boxes at room temperature of the air +(15–20)°C and air humidity 60–75%. The obtained results allow us to establish that with prolonged storage of commercial samples of extruded grain products with the inclusion of vegetable additives in different temperature and humidity conditions, as the shelf life increases, the number of bacteria decreases. The absolute number of spore-forming bacteria in the samples under study, which were stored in synthetic packaging, remained at the same level, and their relative content in the total bacterial flora increased. On the basis of the research, it has been established that the enrichment of products extruded from sugar maize grain with vegetable additives does not impair their microbiological and physico-chemical characteristics during long-term storage in unregulated conditions. It also allows expanding the range of this type of products.
SCIENTIFIC AND PRACTICAL BASIS OF USING PROTEIN PLANT CONCENTRATES FOR THE PRODUCTION OF COMPOUND FEEDS
Authors: Yegorov B. , Makarynska A. , Cherneha I. , Oganesian A.
Published: January 2019

In the article the advantages of using grain legumes as protein plant concentrates are analysed, and a comparative analysis of the chemical composition of the pea and the soybean meal is carried out. Besides, the official parameters for different protein products for pig feeding are presented. To determine whether it is possible to introduce protein plant concentrates into compound feed, it is necessary to know their physical properties. So, the physical properties of the protein plant concentrates have been investigated for the following parameters: moisture content, bulk density, angle of repose, and flowability. Methods of introducing protein plant concentrates into compound feeds have been developed and presented. Taking into account the physical properties and norms of introducing protein plant concentrates for farm animals and poultry, a scheme has been developed for a technological line preparing a portion of grain, powdery, mineral raw materials and meals. One of the methods of introducing protein plant concentrates into compound feeds is extrusion. That is why, a technological scheme of an extrusion line for grain legumes has been developed. The technological scheme provides for the extrusion of a soybeans and peas mixture in the ratio 1:1. Also, the physical properties of the extruded feed additive have been studied. With the software package “Korm Optima Expert,” recipes for feeding piglets aged 43–60 days have been calculated (with protein plant concentrates used in the recipes), and some feeds of animal origin have been replaced with extruded feed additives. According to the calculated recipes, an experimental batch of mixed feeds with the use of protein plant concentrates has been manufactured, and its physical properties have been determined.
STUDY OF THE PROCESS OF CALIBRATION OF CONFECTIONERY SUNFLOWER SEEDS
Authors: Shevchenko I. , Aliiev E.
Published: January 2019

The aim of the research was to make the mechanical and technological process of calibrating confectionery sunflower seeds with a vibrating sieve more effective by giving reasons for its rational methodical and technological parameters. The study of calibration of confectionery sunflower seeds had two stages: numerical simulation and experimental verification. For the first stage, the physical models for numerical simulation (in the STAR-CCM+ software package) of the movement of seeds with a vibrating sieve were: k-ɛ model of separated flow turbulence, gravity field, Van der Waals real gas model, discrete elements model, multiphase interaction model. The second stage, experimental verification of the models obtained, was carried out on a calibration machine (sizer) OKMF. Sieves of three types were selected: perforated sieves, rod sieves, and precision sieves (produced by laser cutting). The numerical simulation of moving the confectionery sunflower seeds with a vibrating sieve has allowed determining how changes in total concentration and productivity depend on the way of the input of the seeds, the sieve angle, the vibration frequency and vibration amplitude of the sieve. To make the seed separation process effective, the vibrating sieve is to operate with the maximum productivity equal to the seed input (1,202 kg/h), with the maximum total seed concentration (10.83%). Experimental studies of moving the seeds of confectionery sunflower with vibrating sieves of different types (perforated screens, rod sieves, and precision sieves) have allowed establishing how changes in total concentration, productivity, and consumed power of the calibrating machine depend on the seed input, sieve angle, and frequency of vibrations of the sieve. To make the seed separation process effective, the vibrating sieve is to operate with the maximum productivity equal to the seed input (perforated screens – 1.116 kg/h, rod sieves – 1,518 kg/h, precision sieves – 1,781 kg/h), with the following total seed concentrations: perforated sieves – 14.54%, rod sieves – 12.45%, precision sieves – 10.41%, and power P (perforated sieves – 0.24 kW, rod sieves – 0.30 kW, precision sieves – 0.35 kW) consumed by the calibrating machine must be minimum. Precision sieves (produced by laser cutting) have the best characteristics of their performance (q=1781 kg/h) and quality (θ=10.41%). For this, the frequency of their vibrations should be 5.9 Hz, and their angle should be 5°.
SYSTEM FOR ANALYZING THE QUALITATIVE CHARACTERISTICS OF GRAIN MIXES IN REAL TIME MODE
Authors: Yehorov V. , Golubkov P. , Putnikov D. , Honhalo V. , Habuiev K.
Published: January 2019

During the implementation of scientific research on the direction of automation of feed mills there was a significant disadvantage. The losses resulting from this shortcoming are, according to our estimates, about 1.2 billion hryvnias per year only within the framework of Ukraine. The disadvantage is connected with the current system of techno-chemical control. The presence of significant delays in the channel analysis of qualitative characteristics leads to the loss of the possibility of using the information obtained in the work of the automatic control system. The developed system of automatic samplers allows to minimize the time for obtaining actual data on the qualitative characteristics of grain mixtures directly during their processing and accordingly expands the possibilities of automation of these processes. Existing systems of analysis of grain characteristics in real time, i.e. directly during the process of processing, are quite costly, which greatly complicates the possibility of constructing an expanded system for analyzing the quality of raw materials at all stages of production. In addition, the integration of these analyzers requires the production of serial installation work on the production line, and accordingly requires for the installation of a temporary stop of production. The installation of stationary multispectral analyzers requires the presence and, accordingly, further maintenance of a full-fledged laboratory. However, the essential disadvantage in this case is the lack of relevance of the data. Thus, when using stationary multispectral analyzers, the data obtained only records the logs and in no way are used by systems of automatic process control at the enterprise. In a sublunary manner, analyzers have been tightened due to the separation of two different processes in principle, which are to be in the multispectral analysis, namely, the process of removing the multispectral sweep and analyzing the resulting scan with the aim of determining specific quality characteristics of the grain mixtures. Thus, in some devices, the sweep is taking place, and their analysis is already taking place in a single multispectral analyzer, which in turn is connected to cloud technologies.
The Best Practice Conference: An Interactive Practice-Based Learning Activity for Resident and Faculty Development
Authors: Welton Randon , Andre Tana
Published: January 2019

This article was migrated. The article was marked as recommended. Objective: The Best Practice Conference (BPC) was designed to use active techniques to enhance measurable learning from a continuing medical education program. Design: The BPC incorporated flipped-classroom techniques, guided discussion, and peer based components to enhance learning. The impact of the BPC was measured by comparing pre-conference, post-conference, and 3-month follow-up data. Setting: The BPC started with emails to likely attendees. The conference occurred during a regularly scheduled Grand Rounds time slot. There were subsequent follow up e-mails to those who had attended. Methods: The Best Practice Conference involved e-mail contact with residents and faculty members who were likely to attend the conference. These e-mails included clinical scenarios, questions about treatment options, and journal articles. The BPC lasted for 1.5 hours and included a variety of active learning techniques. These conferences were attended by psychiatry residents and faculty members. The attendees were contacted several months later and asked questions about the BPC. Results: Between 39 - 48% of attendees changed their recommended treatment over the course of the conference, and three months later approximately 10% of attendees reported that their practice patterns had changed because of the Best Practice Conference. The Best Practice Conference catalyzes developmental learning where clinicians critically evaluate their practice habits in the context of the medical literature and the practices of their peers. Conclusions: The Best Practice Conference promotes impactful Practice Based Learning and Improvement among residents and faculty members.
Fluency training in medical education: Improving competence in IV fluid therapy knowledge and skills
Authors: Walsh Ian K , Dounavi Katerina , Houghton Joseph , Cullen Kathy M , Dillenburger Karola
Published: January 2019

This article was migrated. The article was marked as recommended. Objectives: Intravenous fluid (IV) therapy is an important component of care for many hospital patients, especially in perioperative and acute care settings. However, errors in fluid composition and dosing can be life-threatening. To achieve competent professional performance, i.e., accurate and fluent, it is vitally important that medical students receive effective training in IV fluid therapy. Methods: In this study, we explored how Precision Teaching (PT), a behaviour analytic teaching method, can enhance outcomes of usual medical education techniques.A total of 178 third-year medical students participated in the study during the IV fluid therapy training week. All students completed a multiple-choice test pre- and post-training. In addition to standard IV fluid therapy teaching, the experimental intervention group (n=83 students) used SAFMEDS (Say All Fast MinuteEvery Day Shuffled) cards approximately 3-5 times per day for 5 days. The other 95 students (control group) received teaching as usual, but did not undergo the additional training. Results: Results show that the SAFMEDS boosted performance of the intervention group on the MCQ by 20 percentage points when compared to the control group. Fluency (accuracy and speed) of performance on SAFMED trials increased markedly during the intervention week and there was evidence that weaker students benefitted in particular. Conclusions: Implications for medical education are outlined.
Sarah Staples, The Child in International Refugee Law
Authors: Staples Sarah Dawn Elisabeth
Published: January 2019

Copyright, Cambridge University Press
Aubrianne Norton, Race, Criminal Justice, and Migration Control
Authors: Norton Aubrianne
Published: January 2019

Race, Criminal Justice, and Migration Control: Enforcing the Boundaries of Belonging, edited by Mary Bosworth, Apla Parmar, and Yolanda Vazquez, is an anthology of essays involving the intersectionality of race separated into four sections: 1) Race, Borders, and Social Control; 2) Race, Policing, and Security; 3) Race, Courts, and the Law; and 4) Race, Detention, and Deportation. As an introduction to intersectionality between race, and gender and class, this anthology gives a somewhat comprehensive compilation of migration issues stemming in countries that exercise firm control over migration of incoming migrants and exiting migrants. Each article focuses on an issue ongoing with a specific population of people, and how the mechanisms in place for migration function criminally and divisively.
Alexandra Nickerson, The Privacy Paradox
Authors: Nickerson Alexandra A
Published: January 2019

Privacy is as complex a concept as it is ubiquitous. But Vanderbilt law and history professor Sarah Igo bravely takes on the challenge of chronicling the history of this mutable, yet fundamental American value. In doing so, she demonstrates the irreconcilable trade-off between privacy and exposure, both of which can be liberating and oppressive in their own right. Readers will be impressed by the depth and the breadth of this tome, as Igo examines privacy’s role in fields as disparate as law, psychometrics, philosophy, and technology. As a result, they will come away with a profound, new consciousness of being “known” to the government and to all facets of society. Despite the feelings of vulnerability this awareness may induce, Igo’s book gives us the knowledge, perspective, and foresight to revisit our own privacy debates with agency and determination. As known citizens, the future of privacy is in our hands.
20th Biennial BDS Conference 2018 – Tour 1: Caerphilly Castle
Authors: Griffin Orla
Published: January 2019

This paper is an account of the 20th Biennial British Dam Society Conference 2018 – Site Tour 1: Caerphilly Castle. Caerphilly Castle is the second largest castle in the United Kingdom and is surrounded by an inner and outer moat, which is impounded by earth embankments. This paper describes the general background of the visits, including some of the challenges that have arisen with the moats through the years and the work done to resolve them.
20th Biennial BDS Conference 2018 – Tour 2: Dwr Cymru Welsh Water Reservoirs – Shon Sheffrey and Rhymney Bridge No. 2
Authors: Grierson Richard
Published: January 2019

This paper is an account of the 20th Biennial British Dam Society (BDS) Conference 2018 – Site Tour 2: Dwr Cymru Welsh Water Reservoirs – Shon Sheffrey and Rhymney Bridge No. 2. It describes the general background of the visits including recent upgrade works to the spillways at both sites. At Shon Sheffrey works were complete to upgrade the spillway following recommendations made in the interests of safety in 2010 to investigate and upgrade the spillway of the reservoir as well as grouting to stem leakage through the embankment. At Rhymney Bridge No. 2 works were complete following an incident in 2013 where the spillway failed due to uplift pressures during a major storm event. Approximately 40 BDS delegates visited both Shon Sheffrey and Rhymney Bridge No. 2 reservoirs owned and managed by Dwr Cymru Welsh Water.
Effects of design parameters on behaviour in bottle-shaped struts
Authors: Yuan Aimin , Qian Shoulong , Dai Hang
Published: January 2019

For this paper, an experimental investigation of the impact of the concentration ratio and the mats’ rotation angle on the behaviour and efficiency coefficient of the bottle-shaped struts was conducted. The behaviour of tested panels, including the load–transverse extension curve and strain redistribution, is presented and the quantitative effects of the concentration ratio and the mats’ rotation angle on the efficiency coefficient and the dispersion angle of compressive stresses of bottle-shaped struts are given. The related provisions of ACI 318-14 and BS EN 1992-1-1 are examined. The results indicate that as the concentration ratio increases, the efficiency coefficient and the dispersion angle decrease, and that as the mats’ rotation angle increases, the efficiency coefficient also increases. Some recommendations for ACI 318-14 and BS EN 1992-1-1 are finally presented.
Pricing of Platforms in Two-Sided Markets with Heterogeneous Agents and Limited Market Size
Authors: Feng Zhenhua , Лиу Таосин , Мазалов Владимир , Mazalov Vladimir , Zheng Jie
Published: January 2019

We study a two-sided market represented by network platforms and heterogeneous agents. Our setup departs from Armstrong (2006)’s monopoly model by assuming both (1) a continuum of agents of limited size on each side of the market and (2) heterogeneous utility of agents with Hotelling specification. We show that the monopoly’s optimal pricing strategy always results in a corner solution in terms of the equilibrium market share. We also solve for the social planner’s optimization problem and obtain a similar corner solution result. In addition, the exact values for the equilibrium in the case of duopoly for a two-sided market on two platforms are obtained.
Game-theoretic model of a volunteer computer GRID
Authors: Чернов Илья , Chernov Ilya
Published: January 2019

In the paper we propose a simple game-theoretic model of a Desktop Grid for volunteer computing. Task replication reduces the risk of accepting wrong answers due to sabotage. Saboteur's attack by intruding multiple computing nodes brings him some profit in case a wrong answer is accepted, while the server suffers some penalty in this case. Nodes are assigned some reputation as a monotone function of the number of produced correct (or not exposed) answers. We obtain the optimal mixed strategies and show that the average gain of the players depends only on the server's penalty, nodes' reputation, and the size of the subgrid of nodes with the same reputation. Also we estimate the server's cost per an answer. Numerical examples show that the average cost of the server is not more than that in the case when the number of intruders is known.
A New Longitudinal Examination on the Relationship between Teaching Style and Adolescent Depression
Authors: Yao Zhuojun , Luh Weiming
Published: January 2019

Guided by the theoretical framework of Baumrind’s parenting style, this study aimed at providing a

better understanding of the relationship between teaching style and adolescent depression. The

panel data is from the Taiwan Educational Panel Survey (N=654). Findings showed that the effect of

teaching style on adolescent depression had different pattern accross junior and senior high school

students. And there is interaction effects between teaching style in junior and senior high school.

Authoritarian teaching style played a more significant role for junior high students, and this effect

can last especially among those whose perception of teaching style is authoritarian and authoritative

in high school. And permissive teaching style was more important in senior high stage, it could

decrease the levels of depression especially for those who perceived teaching style is indifferent and

authoritarian in junior high school. Implications for future research were discussed.
Learning Styles in the Context of Reasoning and Problem Solving Ability: An Approach based on Multivariate Analysis of Variance
Authors: Bhat Mehraj
Published: January 2019

Reasoning and problem solving skills are not just for researchers; they are also progressively significant for making knowledgeable decisions in our everyday lives. Showing variations in learning styles have any influence on these skills? The current state of research address the learning styles in context of reasoning and problem solving ability. High school students (598) completed the reasoning ability test, problem solving ability test and learning style inventory. SPSS software was used for evaluating data obtained from three measurement tools. The entire three tools were validated through different techniques and found significant and acceptable. The data was analysed by using MANOVA and Scheffe’s post hoc test. The results indicated that participants showed variations in reasoning and problem solving ability while using learning styles. Moreover, students having assimilating and diverging learning styles possess better reasoning and problem solving ability skills. The results of this research will contribute to the literature of learning styles and cognitive abilities, as well as provide a wide range of implications for class room teachers, curriculum developers, researchers and educational planners.
Environmental DNA (eDNA) extraction using Qiagen DNeasy Blood and Tissue Kit v2
Authors: Walz Kristine , Yamahara Kevan , Michisaki Reiko , Chavez Francisco
Published: January 2019

Nucleic acids extraction from the filters using the Qiagen DNeasy Blood and Tissue Kit with some modifications to the manufacturer’s protocol. These extraction protocols, adapted from Thomsen et al (2012), are used by the Monterey Bay Aquarium Research Institute (MBARI) for Monterey Bay, CA samples (MB). All MB samples were extracted in the Chavez Laboratory at the Monterey Bay Aquarium Research Institute, Moss Landing California. This work was supported by NASA grant NNX14AP62A ‘National Marine Sanctuaries as Sentinel Sites for a Demonstration Marine Biodiversity Observation Network (MBON)’ funded under the National Ocean Partnership Program (NOPP RFP NOAA-NOS-IOOS-2014-2003803 in partnership between NOAA, BOEM, and NASA), and the U.S. Integrated Ocean Observing System (IOOS) Program Office. Thomsen, P. F., Kielgast, J., Iversen, L. L. N., Møller, P. R., Rasmussen, M. & Willerslev, E., 2012, Detection of a Diverse Marine Fish Fauna Using Environmental DNA from Seawater Samples. Plos One, 7(8),e41732. Qiagen Inc., July 2006 DNeasy Blood and Tissue Handbook; available online from Qiagen Inc§ . Qiagen, Inc., June 2012 Qiamp DNA Mini and Blood Mini Handbook, available online from Qiagen, Inc.
Unknown Input Observer Based Robust Actuator Fault Detection and Isolation in Interconnected Power Systems
Authors: GENC V. M. İstemihan , CALİSKAN Fikret
Published: January 2019

In this paper, the performance degradation of a
generating unit in a multi-area power system regulated by an area-wise
decentralized load frequency control is detected and isolated via a scheme of
unknown input observers. This scheme is robust to the changes in the load
demand, which are considered as the unknown inputs. The actuator faults studied
in this work are meant to be the performance degradations in generating units
under load frequency control. Both stuck and non-stuck actuator faults are
analyzed and the performances of the proposed method in both cases are tested
through computer simulations on a two-area power system composed of five
generating units. The results show that a performance degradation in any
generating unit can be detected and isolated successfully provided that the
faults in the sensors measuring generator outputs are absent.
SECULAR STATE AS AN ASSET OF THE MEDIEVAL UNIVERSITY TRADITIONS OF POLEMICS AND SCIENTIFIC DISCUSSIONS
Authors: Kushinska L.A.
Published: January 2019

The article is devoted to the transformation of the religious character of the state into a secular type and factors of such evolution. The author's vision of secular state and the role of the university tradition of polemics and scientific discussions in its formation are presented.
HISTORICAL STUDIES OF VOLODYMYR HRYHOROVYCH LIASKORONSKYI (20.04.1858 – 21.05.1920)
Authors: Oryshchenko I.
Published: January 2019

The article is devoted to the coverage of the life path and the scientific and professional activities of the scientist-medieval Vladimir Lyaskoronsky (1858-1920). On the basis of archival materials, the main milestones of the biography of the scientist, his teaching work are determined. The scientific works of V. Lyaskoronsky «Ethnography for Adam Bremen» and «Philippe August and its relation to the cities» are analyzed. The views of the medieval on the essence of the medieval city, its evolution, and the main features that characterized the wide movement of the urban population for gaining the right to self-government were established. The socio-economic and political foundations that influenced the support of the French King Philippe August communes and gave them a special status were identified. The connection between the development of cities and the obtaining of privileges with the process of the establishment of royal power in France, the expansion of the domain, the struggle with influential feudal lords (Plantagenets, graphs of Flanders), strengthening the military power of France in the late XII - early XIII century. The relationship between Philip Augustus and the clergy and ways of resolving conflicts between the city's population and representatives of the church are considered.
Análisis de falla operacional de un sistema hidroneumático en instalación hospitalaria
Authors: Monteagudo Yanes José Pedro , Jiménez Borges Reinier
Published: January 2019

Introducción: El trabajo presenta el estudio de la falla operacional de un sistema hidroneumático destinado al suministro de agua a una institución hospitalaria.

Objetivo: Determinar la o las causas de interrupción del suministro de agua del sistema hidroneumático a la edificación.

Metodología: Se trazó la característica hidráulica del sistema de tubería y se comparó con la característica hidráulica del sistema hidroneumático, comprobando que satisfacía plenamente las solicitudes de carga y flujo requeridas por la edificación. Dada la presencia de ruidos y vibraciones en la tubería de succión se realizó la comparación del NPSH requerido con el NPSH disponible, determinando que el actual diseño de la tubería de succión es la causa de la falla del sistema hidroneumático.

Resultados: Se proponen tres variantes de modificación al diseño de la tubería de succión que eliminan el fenómeno de la cavitación. Ello evita poner en operación una bombea auxiliar que incrementa el consumo energético en 8760 kWh/año con un costo de 1839,6 $/año y la inseguridad en el servicio de agua.

Conclusiones: El equipo hidropresor seleccionado cumple satisfactoriamente los requerimientos de la instalación, exceptuando el diseño de la tubería de succión donde el NPSH disponible es inferior al NPSH requerido para caudales superiores a 900 l/min, apareciendo el fenómeno de la cavitación y provocando la salida de servicio del sistema.
Sistema anticolisión para invidentes usando redes neuronales evolutivas
Authors: Alvarado Coral Juan David , Muñoz España Elena
Published: January 2019

Introducción: El presente artículo muestra el diseño e implementación de un sistema anticolisión para invidentes usando redes neuronales evolutivas.

Objetivo: Presentar la implementación de redes neuronales evolutivas en un sistema guía para invidentes en la detección de obstáculos estáticos y en movimiento.

Metodología: La metodología empleada se basa en la creación de redes neuronales artificiales a partir del algoritmo genético cooperativo coevolutivo (AGCC), este se encarga de estructurar, modificar y entrenar las redes neuronales. Para ello utiliza la matriz de definición de red (MDR). Para la elaboración de una MDR se toma como base un cromosoma “parte del algoritmo genético”. Una vez este realizada la MDR se crea una red neuronal artificial para luego ser entrenada.

Resultados: El programa realizó varias redes neuronales generando en cada ejecución 10 cromosomas, que al ser entrenados con el AGCC y aplicando la cooperatividad, se obtuvieron las mejores redes neuronales anticolisión teniendo en cuenta un tiempo definido, funcionando efectivamente para la detección de obstáculos estáticos y en movimiento.

Conclusiones: En el sistema anticolisión para invidentes se observó la eficacia de las redes neuronales en dar una respuesta, detectando objetos tanto estáticos como en movimiento proporcionando seguridad al invidente, evitando colisiones con estos.
Desarrollo de un modelo de gasificación en equilibrio químico para evaluar el potencial energético del cuesco en plantas extractoras de aceite de palma en Colombia
Authors: Quintero Coronel Daniel Andrés , Lenis Rodas Yuhan Arley , Corredor Martínez Lesme Antonio
Published: January 2019

Introducción− En las industrias de extracción de aceite de palma, por cada 10 ton de racimos de fruto fresco (RFF) procesados, se producen cerca de 3700 kg de residuos con Poder Calorífico Inferior (PCI) de alrededor de 18 MJ/kg. Estos residuos, compuestos principalmente por racimos de frutos vacíos, fibra y cuesco podrían ser utilizados para generación de electricidad o vapor supliendo de manera parcial o total la demanda de energía de las empresas del sector. De estos residuos, el que mejor se adapta para generación de electricidad a partir de biomasa, en rangos menores a 2MW, es el cuesco, el cual puede ser utilizado en sistemas de gasificación de lecho fijo acoplados a motor generador.
Objetivo− Evaluar el potencial energético del cuesco de palma de aceite para la generación de electricidad utilizando gasificación en lecho fijo acoplada a motor generador.
Metodología− Se desarrolló un modelo de gasificación en equilibrio químico que permite estimar la composición de gases y, por tanto, el potencial energético de los residuos de cuesco de palma.
Resultados- El modelo permite analizar variaciones en el proceso debidas a cambios en agente gasificante (AG), composición y contenido de humedad de la biomasa. Los resultados son validados utilizando información reportada en la literatura. El modelo es utilizado para analizar el potencial energético de los residuos de una planta extractora típica de 10000 ton RFF/mes.
Conclusiones− Se estima que por cada 22 kg/h de cuesco se producen aproximadamente 70 kg/h de gas con composición promedio de 12,5 % H2, 21,8 % CO, 9,5 % CO2, 56 % N2 y trazas de CH4 c on p oder c alorífico i nferior ( PCI) c ercano a 4 ,1 M J/Nm3. Lo anterior, cuando el proceso opera con una relación de equivalencia (ER) de 0,33 y humedad de biomasa de 15 % w.t. Así, utilizando el gas como combustible para un conjunto motorgenerador, la demanda eléctrica de una planta extractora de aceite puede ser suplida en su totalidad, empleando menos del 85 % del cuesco resultante del proceso.
Sosyal Medya Kullanımının Kurum Çalışanlarının Olumlu Elektronik Ağızdan Ağıza İletişimine Etkisinin Yol Analizi ile İncelenmesi: Aile ve Sosyal Politikalar Bakanlığında Bir Uygulama
Authors: AYDIN Bayram Oğuz , GÜRBÜZ Salih
Published: January 2019

Sosyal medyada kurumlar hakkında yapılan olumlu elektronik ağızdan ağıza iletişim önemli bir değere sahiptir. Sosyal medya kullanan kurum çalışanları bu değerin oluşumunda kurum ve kamusu arasında bir köprü oluşturmaktadır. Bu çalışmanın amacı kurum çalışanlarının sosyal medya kullanımı ile olumlu elektronik ağızdan iletişimi arasındaki ilişkiyi incelemek ve literatüre dayanarak geliştirilen yapısal modeli test etmektir. Araştırma 619 (375 erkek, 244 kadın) Aile ve Sosyal Politikalar Bakanlığı çalışanı ile gerçekleştirilmiştir. Çalışmanın veri toplama araçları Sosyal Medya Kullanım Ölçeği (SMKÖ) ve Olumlu Elektronik Ağızdan Ağıza İletişim Ölçeğidir. Ölçüm modeli oluşturulmadan önce değişkenlerin yapısı test edilmiş ve yapısal eşitlik modeline dahil edilecek kadar verimli olduğu gözlemlenmiştir. Daha sonra önerilen model test edilmiştir. Analiz neticesinde, sosyal medya kullanım uyumunu ölçen Sosyal Uyum ve Duygusal Bağlantı (SUDB) ve Sosyal Rutinlere Uyum (SRU) alt boyutlarının her ikisinin çalışmaya katılan kurum çalışanlarının kurumları hakkında olumlu ağızdan ağıza iletişimleri üzerinde anlamlı ve olumlu bir etkisi olduğu görülmüştür. Kurum içi halkla ilişkiler uygulamalarında bu olumlu etki göz önünde bulundurulmalıdır
Absolute eosinophil count as a reliable prognostic marker in patients with perforative peritonitis: a prospective study
Authors: Swaminathan Shanthi Ponnandai , Velayutham Manivannan , Sundar Babu Venkatesh
Published: January 2019

Background: The aims of the study were to find whether a decrease in absolute eosinophil count was a reliable prognostic marker in patients with perforative peritonitis and to determine whether the levels of Absolute eosinophil count had any correlation with the type of perforation.Methods: A total of 104 patients with perforative peritonitis presented consecutively to Madras Medical College, Rajiv Gandhi Government General Hospital from October 2017 to October 2018 were chosen and were allocated into two groups based on the outcome as mortality or survival. 88 patients were in the survival group and 16 patients were in the mortality group. The Absolute eosinophil count distribution in both these groups were recorded along with the type of perforation.Results: Data were processed using SPSS software. All values were expressed as mean±standard deviation / median. Comparison of absolute eosinophil count between the two groups was done using student ‘t’ test and prognostic accuracy of the parameters were done using ROC curve analysis. It was found that a decrease in absolute eosinophil count was associated with adverse outcome in perforative peritonitis patients.Conclusions: From this study, we conclude that Absolute Eosinophil Count is a reliable marker of survival. It allows timely identification of high-risk patients and can be used as a marker for risk stratification and hence can be considered a reliable prognostic marker in perforative peritonitis patients. It can also be concluded that there is no correlation between the Absolute eosinophil count levels and the type of perforation.