bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of Modulus of Elasticity and Shear Modulus by the Measurement of Relative Strains
Authors: Labašová Eva 
Published: April 2017

Abstract
This contribution is focused on determining the material properties (Young modulus and shear modulus) of the testing samples. The theoretical basis for determining material properties are the knowledge of linear elasticity and strength. The starting points are dependencies among the modulus of elasticity, shear modulus, normal stress and relative strain. The relative strains of the testing samples were obtained by measuring predefined load conditions using a strain-gauge bridge and the universal measurement system Quantum X MX 840. The integration of these tasks into the teaching process enhances practical and intellectual skills of students at secondary level technical universities.
Improving Logistics Processes in Industry Using Web Technologies
Authors: Jánošík Ján , Tanuška Pavol , Václavová Andrea 
Published: April 2017

Abstract
The aim of this paper is to propose the concept of a system that takes advantage of web technologies and integrates them into the management process and management of internal stocks which may relate to external applications and creates the conditions to transform a Computerized Control of Warehouse Stock (CCWS) in the company. The importance of implementing CCWS is in the elimination of the claims caused by the human factor, as well as to allow the processing of information for analytical purposes and their subsequent use to improve internal processes. Using CCWS in the company would also facilitate better use of the potential tools Business Intelligence and Data Mining.
Kinematics Simulation of the Cardan Shaft for Investigation of the Cardan Error in Catia V5
Authors: Hajdu Štefan , Rolník Ladislav , Švoš Juraj 
Published: April 2017

Abstract
The goal of this paper is the creation of kinematic systems of the cardan shaft in the CAD/CAM/CAE system CATIA V5 and analysis of three cases of assembly to determine upon which, angular accelerations had been observed between the input driving shaft, central cardan shaft and output driven shaft. The scientific result of this paper was to confirm the presence of cardan error and how this type of error can be successfully eliminated.
Cluster Analytical Method of Fault Risk Analysis in Systems
Authors: Michaľčonok German , Horalová Kalinová Michaela 
Published: April 2017

Abstract
In providing safety functions, the proposal of safety functions of control systems is an important part of a risk reduction strategy. In the specification of security requirements, it is necessary to determine and document individual characteristics and the desired performance level for each safety. This article presents the results of the experiment cluster analysis.
The results of the experiment prove that the methods of cluster analysis provide a suitable tool for analyzing the reliability of safety systems analysis. Regarding the increasing complexity of the systems, we can state that the application of these methods in the subject area is a good choice.
Using Sodium Hydrogen Carbonate for Foaming Polymers
Authors: Satin Lukáš , Likavčan Lukáš , Košík Miroslav , Rantuch Peter , Bílik Jozef 
Published: April 2017

Abstract
All plastics products are made of the essential polymer mixed with a complex blend of materials known collectively as additives. Without additives, plastics would not work, but with them, they can be made safer, cleaner, tougher and more colourful. Additives cost money, but by reducing production costs and making products live longer, they help us save money and conserve the world's precious raw material reserves. In fact, our world would be a lot less safe, a lot more expensive and a great deal duller without the additives that turn basic polymers into useful plastics. One of these additives is sodium bicarbonate. Influence of sodium bicarbonate on properties of the product made of polystyrene was observed in the research described in this paper. Since polystyrene is typically used as a material for electrical components, the mechanical properties of tensile strength and inflammability were measured as a priority. Inflammability parameters were measured using a cone calorimeter.
Wear of Cutting Tool with Excel Geometry in Turning Process of Hardened Steel
Authors: Samardžiová Michaela 
Published: April 2017

Abstract
This paper deals with hard turning using a cutting tool with Xcel geometry. This is one of the new geometries, and there is not any information about Xcel wear in comparison to the conventional geometry. It is already known from cutting tools producers that using the Xcel geometry leads to higher quality of machined surface, perticularly surface roughness. It is possible to achieve more than 4 times lower Ra and Rz values after turning than after using conventional geometry with radius. The workpiece material was 100Cr6 hardened steel with hardness of 60 ± 1 HRC. The machine used for the experiment was a lathe with counter spindle DMG CTX alpha 500, which is located in the Centre of Excellence of 5–axis Machining at the Faculty of Materials Science and Technology in Trnava. The cutting tools made by CBN were obtained from Sandvik COROMANT Company.
The aim of this paper is to investigate the cutting tool wear in hard turning process by the Xcel cutting tool geometry.
Theoretical Aspect of Assembly
Authors: Václav Štefan , Jurko Jozef , Božek Pavol , Lecký Šimon 
Published: April 2017

Abstract
Assembly plays a decisive role in global production in terms of its share in the total costs of the products assembled and in terms of the number of people working in the field. The author of (1) indicates that the percentage of the workers in assembly out of the total number of the workers in manufacturing in the U.S.A. ranged from 26.3% (bicycles) to 45.6% (automobiles), while the cost of the product assembly represented typically more than 50% of the total costs. Despite the above-mentioned importance of assembly in the industry, the discontinuous production processes have not been paid adequate attention until recently. It was sufficient to manufacture parts and then an operative reasonably and inexpensively assembled each product manually. The authors of this paper would like to emphasise “the method of a systemic approach” which focuses upon identifying the key activities to meet the objective. Harmonious interrelations of the activities are often a source of greater profit than in a system where some activities are of the top level while the others are neglected (2). The aim of this paper is to describe theoretical aspects of all the typical activities of the assembly system.
Can Resistance Training Enhance the Rapid Force Development in Unloaded Dynamic Isoinertial Multi-Joint Movements? A Systematic Review
Authors: Van Hooren Bas , Bosch Frans , Meijer Kenneth 
Published: April 2017

Abstract
Van Hooren, B, Bosch, F, and Meijer, K. Can resistance training enhance the rapid force development in unloaded dynamic isoinertial multi-joint movements? A systematic review. J Strength Cond Res 31(8): 2324–2337, 2017—The objectives of this systematic review were to (a) evaluate whether resistance training can improve the rapid force development in unloaded dynamic isoinertial multi-joint movements and (b) investigate whether these effects differ between untrained/recreationally trained and well-trained individuals. Four electronic databases were screened for studies that measured the effects of resistance training on rapid force development in unloaded dynamic isoinertial multi-joint movements. Twelve studies with a total of 271 participants were included. 10/26 (38%) and 6/14 (43%) of the measures of rapid force development in unloaded dynamic isoinertial multi-joint movements significantly improved following training in the untrained/recreationally trained and well-trained individuals, respectively. Additionally, 7/14 (50%) and 3/12 (25%) of the measures significantly improved during a countermovement and squat jump in the untrained/recreationally trained individuals and 4/6 (67%) and 2/8 (25%) significantly improved during a countermovement and squat jump in the well-trained individuals, respectively. These findings indicate that resistance training has a limited transfer to rapid force development in unloaded dynamic isoinertial multi-joint movements, especially for well-trained individuals and in movements without a countermovement. Furthermore, rapid force development has likely a limited transfer from movements with countermovement to movements without a countermovement and from bilateral movements to unilateral movements. Therefore, it is important to specifically mimic the actual sport movement in order to maximize the transfer of training and testing.
Position-Specific Acceleration and Deceleration Profiles in Elite Youth and Senior Soccer Players
Authors: Vigh-Larsen Jeppe F. , Dalgas Ulrik , Andersen Thomas B. 
Published: April 2017

Abstract
Vigh-Larsen, JF, Dalgas, U, and Andersen, TB. Position-specific acceleration and deceleration profiles in elite youth and senior soccer players. J Strength Cond Res 32(4): 1114–1122, 2018—The purpose of the study was to characterize and compare the position-specific activity profiles of young and senior elite soccer players with special emphasis put on accelerations and decelerations. Eight professional senior matches were tracked using the ZXY tracking system and analyzed for the number of accelerations and decelerations and running distances within different speed zones. Likewise, 4 U19 and 5 U17 matches were analyzed for comparison between youth and senior players. In senior players, the total distance (TD) was 10,776 ± 107 m with 668 ± 28 and 143 ± 10 m being high-intensity running (HIR) and sprinting, respectively. Number of accelerations and decelerations were 81 ± 2 and 84 ± 3, respectively, with central defenders performing the lowest and wide players the highest number. Declines were found between first and second halves for accelerations and decelerations (11 ± 3%), HIR (6 ± 4%), and TD (5 ± 1%), whereas sprinting distance did not differ. U19 players performed a higher number of accelerations, decelerations, and TD compared with senior players. In conclusion, differences in the number and distribution of accelerations and decelerations appeared between player positions, which is of importance when monitoring training and match loads and when prescribing specific training exercises. Furthermore, youth players performed as much high-intensity activities as senior players, indicating that this is not a discriminating physiological parameter between these players.
Increased Leg Bone Mineral Density and Content During the Initial Years of College Sport
Authors: Scerpella John J. , Buehring Bjoern , Hetzel Scott J. , Heiderscheit Bryan C. 
Published: April 2017

Abstract
Scerpella, JJ, Buehring, B, Hetzel, SJ, and Heiderscheit, BC. Increased leg bone mineral density and content during the initial years of college sport. J Strength Cond Res 32(4): 1123–1130, 2018—Bone mineral density (BMD) and bone mineral content (BMC) data are useful parameters for evaluating how training practices promote bone health. We used dual-energy X-ray absorptiometry (DXA) to longitudinally assess sport-specific growth in leg and total body BMD/BMC over the initial 2 years of collegiate training. Eighty-five Division 1 collegiate basketball, hockey, and soccer athletes (50 males and 35 females; age 19.0 [0.8] years) underwent annual DXA scans. Leg and total body BMD/BMC were compared within and across two 1-year intervals (periods 1 and 2) using repeated-measures analysis of variance, adjusting for age, sex, race, and sport. Leg BMD, leg BMC, and total body BMC all increased over period 1 (0.05 g·cm−2 [p = 0.001], 0.07 kg [p = 0.002], and 0.19 kg [p < 0.001] respectively). Changes in period 2 compared with period 1 were smaller for leg BMD (p = 0.001), leg BMC (p < 0.001), leg fat mass (p = 0.028), and total BMC (p = 0.005). Leg lean mass increased more during period 2 than period 1 (p = 0.018). Sports participation was the only significant predictor of change in leg BMD. Significant increases in both leg BMD and BMC were demonstrated over both 2-year periods, with greater gains during period 1. These gains highlight the importance of attentive training procedures, capitalizing on attendant physical benefits of increased BMD/BMC. Additional research in young adults, evaluating bone mass acquisition, will optimize performance and decrease risk of bone stress injury among collegiate athletes.
Maximum Dynamic Lower-Limb Strength Was Maintained During 24-Week Reduced Training Frequency in Previously Sedentary Older Women
Authors: Walker Simon , Serrano Javier , Van Roie Evelien 
Published: April 2017

Abstract
Walker, S, Serrano, J, and Van Roie, E. Maximum dynamic lower-limb strength was maintained during 24-week reduced training frequency in previously sedentary older women. J Strength Cond Res 32(4): 1063–1071, 2018—There is little study into the effects of reducing strength training below the recommended twice weekly frequency, particularly in older women, despite the possibility that individuals will encounter periods of reduced training frequency. The purpose of the present study was to determine the effects of a period of reduced training frequency on maximum strength and muscle mass of the lower limbs in comparison with the recommended training frequency of twice per week. After an initial 12-week period, where all subjects trained twice per week, a reduced strength training group (RST) trained once per week, whereas another strength training group (ST) continued to train twice per week for 24 weeks. A nontraining age-matched control group (CON) was used for comparison. All subjects were tested for leg press 1-repetition maximum (1RM), electromyogram (EMG) amplitude of vastus lateralis and medialis, and quadriceps cross-sectional area (CSA) measured by panoramic ultrasound at weeks 0, 12, and 36. Both ST and RST continued to increase 1RM during the reduced training frequency period compared with control (∼8% and ∼5% vs. ∼−3%, respectively; p ≤ 0.05). Accompanying these changes were significant increases in EMG amplitude in both ST and RST (p ≤ 0.05). However, the initial gains in quadriceps CSA made from week 0 to week 12 in RST were lost when training once per week (RST ∼−5%). Therefore, reduced training frequency in this population does not adversely affect maximum strength or muscle activity but can negatively affect muscle mass, even reversing training-induced gains. Older individuals not training at least twice per week may compromise potential increases in muscle mass, important in counteracting effects of aging.
A Balanced Comparison of Object Invariances in Monkey IT Neurons
Authors: Ratan Murty N. Apurva , Arun Sripati P. 
Published: April 2017

AbstractOur ability to recognize objects across variations in size, position, or rotation is based on invariant object representations in higher visual cortex. However, we know little about how these invariances are related. Are some invariances harder than others? Do some invariances arise faster than others? These comparisons can be made only upon equating image changes across transformations. Here, we targeted invariant neural representations in the monkey inferotemporal (IT) cortex using object images with balanced changes in size, position, and rotation. Across the recorded population, IT neurons generalized across size and position both stronger and faster than to rotations in the image plane as well as in depth. We obtained a similar ordering of invariances in deep neural networks but not in low-level visual representations. Thus, invariant neural representations dynamically evolve in a temporal order reflective of their underlying computational complexity.
Endoscopic ultrasound-guided ethanol ablation therapy for pancreatic insulinoma: an unusual strategy
Authors: de Sousa Lages Adriana , Paiva Isabel , Oliveira Patrícia , Portela Francisco , Carrilho Francisco 
Published: April 2017

Summary
Insulinomas are the most frequent cause of hyperinsulinaemic hypoglycaemia. Although surgical enucleation is the standard treatment, a few other options are available to high-risk patients who are elderly or present with co-morbidities. We present a case report of an 89-year-old female patient who was admitted to the emergency department due to recurrent hypoglycaemia, especially during fasting. Laboratory work-up raised the suspicion of hyperinsulinaemic hypoglycaemia, and abdominal CT scan revealed a 12 mm nodular hypervascular lesion of the pancreatic body suggestive of neuroendocrine tumour. The patient was not considered a suitable candidate for surgery, and medical therapy with diazoxide was poorly tolerated. Endoscopic ultrasound-guided ethanol ablation therapy was performed and a total of 0.6 mL of 95% ethanol was injected into the lesion by a transgastric approach; no complications were reported after the procedure. At 5 months of follow-up, no episodes of hypoglycaemia were reported, no diazoxide therapy was necessary, and revaluation abdominal CT scan revealed a pancreatic nodular lesion with a size involution of about half of its original volume. The patient is regularly followed-up at the endocrinology clinic and shows a significant improvement in her wellbeing and quality of life.

Learning points:

Insulinomas are the most frequent cause of hyperinsulinaemic hypoglycaemia.

Surgical enucleation is the standard treatment with a few other options available to high-risk patients.

Endoscopic ultrasound-guided ethanol ablation therapy is one feasible option in high-risk patients with satisfactory clinical outcomes, significant positive impact on quality of life and low complication rates related to the procedure.
Inference on the Genetic Basis of Eye and Skin Color in an Admixed Population via Bayesian Linear Mixed Models
Authors: Lloyd-Jones Luke R , Robinson Matthew R , Moser Gerhard , Zeng Jian , Beleza Sandra , Barsh Gregory S , Tang Hua , Visscher Peter M 
Published: April 2017

AbstractGenetic association studies in admixed populations are underrepresented in the genomics literature, with a key concern for researchers being the adequate control of spurious associations due to population structure. Linear mixed models (LMMs) are well suited for genome-wide association studies (GWAS) because they account for both population stratification and cryptic relatedness and achieve increased statistical power by jointly modeling all genotyped markers. Additionally, Bayesian LMMs allow for more flexible assumptions about the underlying distribution of genetic effects, and can concurrently estimate the proportion of phenotypic variance explained by genetic markers. Using three recently published Bayesian LMMs, Bayes R, BSLMM, and BOLT-LMM, we investigate an existing data set on eye (n = 625) and skin (n = 684) color from Cape Verde, an island nation off West Africa that is home to individuals with a broad range of phenotypic values for eye and skin color due to the mix of West African and European ancestry. We use simulations to demonstrate the utility of Bayesian LMMs for mapping loci and studying the genetic architecture of quantitative traits in admixed populations. The Bayesian LMMs provide evidence for two new pigmentation loci: one for eye color (AHRR) and one for skin color (DDB1).
PROSTITUCIÓN Y SALUD: EXPERIENCIAS INVISIBILIZADAS DE MUJERES Y PERSONAS TRANS 1 EN ARGENTINA
Authors: Chazarreta Irma Elizabeth 
Published: April 2017

Las mujeres y las personas trans que ejercen la prostitución constituyen un grupo vulnerado y estigmatizado socialmente, no sólo por pertenecer al género femenino, sino por el tipo de actividad que realizan, estigmatizada por la sociedad en su conjunto, inclusive los varones que consumen. En ese sentido, el presente trabajo analiza los factores sociales que afectan la salud de las mujeres y de las personas trans en situación de prostitución; asimismo, examina las influencias del género en la salud de ellas. Se utiliza como instrumento para la recolección de datos las historias de vida. Cabe aclarar que el mismo se trata de avances logrados hasta el momento como resultado de un proceso de investigación cualitativa más amplio. Las mujeres y las personas trans en situación de prostitución se encuentran expuestas a condiciones laborales y de salud, desfavorables. Dentro de ellas se pueden mencionar: la mercantilización del cuerpo, la violencia que pueden sufrir a causa de transitar a altas horas de la noche en zonas céntricas como periféricas, las escasas posibilidades de negociar el uso del preservativo; ya que, los prostituyentes ofrecen mayor remuneración a cambio de no utilizarlo. Como si esto fuera poco, la asistencia a los centros de salud se torna difícil por los horarios de atención (en sus momentos de descanso) y por la discriminación a la que se ven expuestas.
EL PODER Y LOS AFECTOS EN EL ANÁLISIS DE LAS RELACIONES Y LAS TRANSFORMACIONES EN LAS FAMILIAS
Authors: Piedra Guillén Nancy 
Published: April 2017

El trabajo presenta un análisis de los estudios que se han realizado en América Latina y varios países desarrollados sobre las familias. Por la prolífica producción en la temática se le da principal importancia a los textos que en las últimas tres décadas analizan las modificaciones en las familias considerando la incorporación de las mujeres al mercado laboral y enfatizan en las relaciones de poder al interior de las familias y los afectos en estas, los dos últimos temas de reciente incursión en las ciencias sociales. Este tipo de análisis observan la complejidad de la dinámica familiar que es micro social y que impacta procesos macro sociales. Estos estudios dan un giro a la perspectiva lineal que hasta el momento dominaba las investigaciones anteriores de los años 90s en las familias, que enfatizaban en el tema de la composición de las mismas para estudiar los cambios ocurridos en las últimas décadas. Actualmente, la temática de las familias se analiza de forma más integral y multidimensional.
EL SUJETO DE LA FISURA ESTRUCTURAL: CONSIDERACIONES ONTOLÓGICAS
Authors: Martínez Herrera Manuel 
Published: April 2017

El sujeto de la historia y el sujeto del inconsciente son conceptos producidos por desarrollos teóricos desarticulados. Lo cual genera, en el ámbito de las ciencias sociales, una fluctuación entre monismos estructuralistas, logocéntricos y psicoanalíticos; dicha desarticulación constituye una de las grandes deudas de las ciencias sociales. Los procesos de subjetivación, emanan de las dimensiones históricas e inconscientes constructoras de realidades. Ontológicamente, la concreción del sujeto implica unaruptura con la realidad establecida, la subjetividad tiene su origen en una ausencia absoluta que trasciende el orden societal y al propio sujeto, ubicándose más allá de la estructura social, de las posibilidades comprensivas del lenguaje, incluso, de la representación inconsciente. Desde el punto de vista ontológico, la subjetividad se constituye en un anhelo imposible e innombrable que jamás se obtura, poniendo en movimiento al sujeto y a los dominios societarios. Esta vacuidad interna, producto de las falencias y deseos humanos en pos de una plenitud perdida, encuentra, en parte, su alivio en una promesa supraterrenal. En el presente trabajo se realiza una somera revisión de algunas de las principales conceptualizaciones acerca del sujeto y de la sociedad, desde las perspectivas del marxismo y del psicoanálisis. Se abordan las posibilidades analíticas de dichas perspectivas, en función de la noción del sujeto histórico y del sujeto del inconsciente, el inconsciente entendido como acontecimiento social y la noción de acontecimiento concebida como fisura-vacuidad en el orden estructural. Es, a partir de dichas conceptualizaciones, que se propone la intelección de la subjetividad como producción social.