bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of Friction Stir Welding Parameters on the Mechanical Properties of EN AW-7075 Weld Joints
Authors: Nagy Máté , Behúlová Mária
Published: May 2016

The paper deals with the friction stir welding (FSW) of the high strength EN AW 7075-T651 aluminium alloy with the aim to analyze the influence of welding parameters on the mechanical properties of Al-weld joints. FSW represents relatively novel solid-state technology of material joining which can be successfully applied for welding of several metallic alloys including the high-strength aluminium alloys that are hard to weld by conventional fusion welding processes. In cooperation with VÚZ - PI SR Bratislava, nine experimental weld joints of samples with dimensions of 300 × 150 × 10 mm were prepared using the welding machine of the FSW-LM-060 type and different parameters of welding – the welding speed from 60 to 120 mm/min and the tool rotation rate from 600 to 1000 rpm in clockwise direction. The quality of weld joints was evaluated by static tensile tests and micro-hardness measurements. According to obtained results of tensile testing, the average values of ultimate strength of weld joints are by 32.2 % lower comparing with the ultimate strength of the base material. On the other hand, the ductility increased by 7.2 %. The highest micro-hardness of weld joints at the level of 129 HV was measured in thermo-mechanically affected zone on the retreating side.
Phase Morphology, Mechanical and Thermal Properties of Poly (Trimethylene Terephthalate) and Poly (Ethylene Terephthalate) Blends
Authors: Jia Pan Jin , Wang Ya Fei , Li Hui Bo , Run Ming Tao
Published: May 2016

The poly (ethylene terephthalate)/poly (trimethylene terephthalate) (PET/PTT) blends were prepared and their phase morphology, mechanical and thermal properties were investigated by scanning electron microscopy (SEM), polarized optical microscopy (POM), universal material testing machine, differential scanning calorimetry (DSC), wide-angle X-ray (WAXD), respectively. The glass transition and SEM results suggest apparently that the PET and PTT have good miscibility at amorphous state. The blends with more PET content less likely undergo a melting/recrystallization process during DSC heating scan. In the blends, PET component with higher supercooling degree crystallizes first, and then the crystallites of PET will be the nucleating agents for PTT, which greatly improves the crystallization rate of PTT. Because of the interaction between the PET and PTT, there are much smaller spherulites formed in blends with increasing PET component. The blend with more PET contents has larger tensile strength and modulus.
Isoconversional Methods for Kinetic Modeling of Kerogen Pyrolysis Using TG Data
Authors: Shawabkeh A. , Abdel Halim K.S. , Al-Ayed O.
Published: May 2016

The pyrolysis kinetics of the Jordanian Lajjun oil shale kerogen was investigated inside a TGA reactor. Kerogen samples (extracted by mineral digestion) were non-isothermally heated at rates varying from 1 to 50°C/min under 350-550C in N2 atmosphere. Friedman, Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) models were employed to estimate the kinetic parameters at isoconversional points ranging from 0.1 to 0.9. The value of the calculated apparent activation energy (E) was found to vary with both the employed model and the conversion (x). Using the three models, the calculated increased with from 10 to 30% (low level), and then decreased with from 30 to 60% (medium level). At high level (60 to 90%), however, increased with increase using both KAS and FWO models, while it continuously dropped with increase using Friedman model. The frequency factor (k0) calculated form each model was found to linearly correlate with E. Compared to KAS and FWO models, Friedman' provided a more accurate fit to the experimental data.
Natural Materials to Absorb Water from Environment
Authors: Santamaría Ortega Arturo , Rubio Toledo Miguel Angel , Victoria Uribe Ricardo , Utrilla Cobos Sandra Alicia
Published: May 2016

In nature, there is a large number of materials to be discovered, all with different characteristics and for certain functions. In the case of plants, they are responsible for collecting, taking care and protect water naturally.In Mexico there are different plants of the cactus family, which catch and retain water for their existence, so some plants collect more volume of body water than they have. It is very important for this investigation.In Mexico and throughout the continent there is a common cactus or chumbera that easily adapts to the environment and very rampant in this country, so that its study and analysis makes it one of the most important natural systems for this research, because 95% of it is water and the other 5% is organic material.Later, the common Maguey or agave plant is analyzed, which is important for the history of ancient Mexico, this long before the Spaniards arrived in America. The agave juice and whole plant were an important part of Mexican culture [1], even today is used in many regions and is an important part of the economy in this country.Last but not least is the barrel cactus plant, which surprisingly lets us see how natural systems build structural and formal elements in order to the creation and configuration of new materials that can significantly help to collect water.
The Effect of Reactive Red 4 Dye as a Sensitizer in Enhancing Photocatalytic Activity of TiO2 for Degradation of Methyl Orange
Authors: Bakar F. , Azami M.S. , Ain S.K. , Zaharudin R. , Nawawi Wan Izhan
Published: May 2016

In this work, anionic RR4 dye was used to sensitize TiO2/PVA and TiO2/PEG immobilized system in enhancing photocatalytic degradation of anionic methyl orange (MO) dye. 0.3g of TiO2 and polymer binder was coated onto a clean glass plate by using brush technique to develop optimum immobilize TiO2 system. A comparison study between immobilized TiO2/PVA (Im/TiO2/PVA) and immobilized TiO2/PEG (Im/TiO2/PEG) system with and without RR4 sensitizer were carried out under 55-W fluorescent lamp and visible light irradiation. The photocatalytic degradation of MO was significantly enhanced for both RR4 dye sensitized Im/TiO2/PVA and Im/TiO2/PEG with first order rate constant was ca. 0.080 min-1 and 0.071 min-1 respectively under 55-W fluorescent lamp. Same observation as well under visible light irradiation whereby enhanced of those RR4 sensitized immobilized photocatalysts were recorded as compared with immobilized photocatalysts without RR4 as sensitizer. The photocatalytic enhancement under Im/TiO2/PVA/RR4 and Im/TiO2/PEG/RR4 are due to the ability of RR4 dye to become electron (e-) donor for conduction band (CB) of TiO2, thus making TiO2 CB riches with electron, eventually this e is used to remove MO dye by producing hydroxyl radical.
Thermal Analysis Application in Study of Alkali-Activated Blast Furnace Slag
Authors: Mec Pavel , Boháčová Jana , Turicová Martina
Published: May 2016

The most modern methods are used for study of alkali-activated material nowadays. Due to structure of these materials which is less structured most of these methods provide only limited information. Thermal analysis is partially applicable to alkali activated materials based on blast furnace slag. The article describes the application possibilities of thermal analysis to the study of thermal transformations of these materials and their applicability to the description of the tested structure.
Design of Sliding Mode Based Differential Flatness Control of Leg-Wheel Hybrid Robot
Authors: Mauledoux Mauricio , Mejia-Ruda Edilberto , Aviles Sanchez Oscar , Dutra Max Suell , Rojas Arias Alejandra
Published: May 2016

The sliding mode based differential flatness control is used to stabilize the error dynamics in view of unmodeled dynamics employing position, velocity and acceleration as reference values but feeding back to system only the position and velocity measurements. This controller is able to plan trajectories of control gains within the proposed scheme of the controller. By above this paper describes a sliding mode based differential flatness control to a leg-wheel hybrid robot, in order to design a robotic prototype with the ability to move an uneven ground. To prove the controller working a simulation in Matlab-Simulink using Simmechanics is made. The result of this work shows a controller that is able to follow the reference trajectories without overshoots and small chattering.
Development of Parallel Delta Robot System Controller Based on Raspberry Pi and FPGA
Authors: Sanngoen Wanayuth , Po-Ngaen Watcharin , Charitkhuan Chirot , Doungjitjaroen Kitsada
Published: May 2016

This paper presents a system control design on 2 axes “Delta Industrial Robot”. The control system utilizes both the embedded technology and the “Raspberry Pi" which is a low power consumption PC with open source operating system. The user can communicate with the PC and FPGA (Field Programmable Gate Array) via the system GUI interface. The FPGA acts as dedicated hardware to provide both the efficiency and flexibility for the closed-loop servo control system.To calculate all related kinematics equations for the robot, look up table approach has been implemented to reduce the calculation complexity. Python programs are also implemented to create and search the look up tables. The inverse kinematics is the key to find the position of the robot. A test load of 0.2 kg at the velocity of 2.618 m/s, the S.D. of the end effector’s position of the test result is within 0.06 mm.
Modeling and Control of a Haptic Lever to Regulate the Speed in Maritime Vehicles
Authors: Prada Vladimir , Conde Gregory , Figueredo Armando , Sánchez Julián , Santos Alexander
Published: May 2016

This paper presents the design and construction of a haptic device. This device aims to generate a tactile feedback to the user. The feedback is generated when the user has contact with virtual limits (through a graphical interfaces or electronic cards). These limits could be due to speeding or recklessness from the pilot under conditions of low visibility or turbulence. The paper begin with the design of the lever-shaped cam which has two Degree of Freedom (DOF). It proceeds with the kinematic analysis to obtain the work area. As of workspace is possible to determine the contact point with the geometry of the virtual object. In this event the user will have a tactile feedback, a force or vibration. This force must be minimal, to prevent injury to the user.
Experimental Study on the Wet Electrostatic Precipitator for Purifying Biomass Fuel Gas
Authors: Xiao Li Chun , Yang Xiao Yuan
Published: May 2016

Recently, biomass fuel gas from the gasification furnace is widely used for power generation. However, there are many kindes of impurities in the biomass fuel gas. If they aren’t removed, they will have great disadvantages on the safe operation of gas turbine. So it must be purified before combustion in order to protect the gas turbine. Wet electrostatic precipitator can be used for purifying the biomass fuel gas for its high collection efficiency. The characteristics of biomass dust and collection efficiency of wet electrostatic precipitator are presented in the paper. A compared study on collection efficiency between dry electrostatic precipitator and wet one are carried out at the same condition. The results show that the dust in biomass fuel gas contains many elements, such as Si, O, Mg, Al, K, Ca and Fe. Its median diameter d50 is 26.05 μm. Collection efficiency gradually increases with the water pressure at beginning of test. It doesn’t increase until the water pressure is 0.4 MPa. The higher the wind speed in electric field, the lower the collection efficiency is. Collection efficiency can be improved by adding alkali to the spraying water. When the polar matching is RS tubular barbed wire with 480C plate, water pressure is 0.4 MPa and gas velocity is 1.0 m/s, collection efficiency of the wet electrostatic precipitator is 5% more than the dry one.
Passenger Safety Assessment in Urban Rail Transit Station Based on Systematic Dynamics
Authors: Jia Ning , Wang Yan Hui
Published: May 2016

This article describes the service facilities in urban rail station, introduces the concept of passenger safety, and elaborates the few research on the safety level of the passenger. Using systematic dynamics method, the passenger behavior processes at the station can be analyzed and the passenger flow could be calculated. Silimar with service level evaluation factors, the paper proposes a method to assess the security both at escalator and platform in station for practical applications.
The Concept of Mechanical Part of the Model Micro-Energy Sources for Electrical Laboratories
Authors: Drtina René , Lokvenc Jaroslav , Šedivý Josef , Škoda Jan
Published: May 2016

The use of renewable (alternative) energy sources of energy is still a hot topic. In the electrical engineering laboratories of the Department of technical subjects created a model of micro energy sources that can be operated in various operating modes to simulate in various operating conditions. The machine set is dedicated for laboratory of electric engeneering. Goal is to show students in the subject Renewable energy sources and their application, practical use and parameters an the asynchronous generator. The article deals with the mechanical concept and mechanical construction of laboratory machine set.
An Instructional Assistant Collaboration Server System Based on Cloud Platform
Authors: Wang Wei Hong , Zhang Qing , Cao Yu Hui , Shi Dian Yuan
Published: May 2016

In order to take full advantage of available resources in existed campus experimental platform and be able to integrate and optimize resources of the platform, increase the rate of resource sharing, and promote the reform of the existing education system, this paper built an instructional assistant collaboration service system based on cloud platform, named briefly IACSS, in campus for teaching assistant. At first, the existed experimental system was discussed deeply. Then, aiming at the lacking of efficiency and resource sharing degree and so on, the system platform of IACSS based on cloud and mobile technology introduces the data fusion and interaction. The architecture of IACSS was given after that. Then, the system platform was built. The system platform of IACSS supports the optimization of resources and personalized services customized mechanism. And it also supports the accessed and cooperated with each other at anytime and anywhere. Nowadays, the system has been successfully deployed in the campus and the test run, the practice shows that the platform can reasonably integrate resources, improve resource sharing rate, improvement of the existing education system.
A Hybrid Differential Evolution Algorithm Based on Dynamic Variable Neighborhood Search for Permutation Flowshop Scheduling Problem
Authors: Liu Wen Bo
Published: May 2016

Permutation flowshop scheduling problem (PFSP) is a classical NP-hard combinatorial optimization problem, which provides a challenge for evolutionary algorithms.Since it has been shown that simple evolutionary algorithms cannot solve the PFSP efficiently, local search methods are often adopted to improve the exploitation ability of evolutionary algorithms. In this paper, a hybrid differential evolution algorithm is developed to solve this problem. This hybrid algorithm is designed by incorporating a dynamic variable neighborhood search (DVNS) into the differential evolution. In the DVNS, the neighborhood is based on multiple moves and its size can be dynamically changed from small to large so as to obtain a balance between exploitation and exploration. In addition, a population monitoring and adjusting mechanism is also incorporated to enhance the search diversity and avoid being trapped in local optimum.Experimental results on benchmark problems illustrated the efficiency of the proposed algorithm.
Modifiable antenatal risk factors for stillbirth amongst pregnant women in the Omusati region, Namibia
Authors: Tshibumbu Desire D. , Blitz Julia
Published: May 2016

Background: Reduction of stillbirth rates is important because of the social and economic implications. Access to quality antenatal care is important in preventing the risk factors associated with stillbirth.Aim: To determine the prevalence of modifiable antenatal risk factors associated with stillbirth so as to determine possible gaps in their prevention.Setting: The study was conducted at four district hospitals in the Omusati Region of Namibia.Methods: A descriptive study using recorded antenatal data was used. Data were collected from the records of 82 women at the time that they had a stillbirth, during the period October 2013 to December 2014. Data were collected for modifiable risk factors related to maternal characteristics, antenatal care received, medical conditions and obstetric complications.Results: The average prevalence of each category of risk factors was as follows: quality of antenatal care (19.8%), maternal characteristics (11.4%), medical conditions (8.9%) and obstetric complications (6.5%). The most prevalent individual risk factors included: no folate supplementation (30.5%), HIV infection (25.6%), late booking (16.7%), intrauterine foetal growth retardation (13.4%) and alcohol use (12.5%).Conclusion: Amongst the 14 modifiable risk factor included in the present study, 11 (78.6%) were prevalent amongst women who had a stillbirth. Risk factors associated with quality of antenatal care were the most prevalent. Whilst further investigation is needed to determine the causes behind this prevalence, health education on the availability and benefits of antenatal care, pregnancy timing and spacing may contribute to reducing the prevalence of these risk factors.Keywords: Stillbirth; modifiable risk factors; pregnant women; Omusati region; Namibia
Functional outcomes of post-traumatic metacarpal hand reconstruction with free toe-to-hand transfer
Authors: Venkatramani Hari , Bhardwaj Praveen , Sierakowski Adam , Sabapathy S. Raja
Published: May 2016

Introduction: We present the functional outcomes of microvascular toe transfer to reconstruct the post-traumatic metacarpal hand deformity. Twelve toe transfers were successfully carried out in 11 patients. Materials and Methods: In each patient, the level of injury was classified according to the Wei classification system. Functional outcome was measured in seven patients using the Tamai score. Additional objective tests of function were carried out in three patients, including the Jebsen test, grip strength, pinch strength, web opening, static and moving two-point discrimination and Semmes–Weinstein monofilament testing. Observation and Results: The average Tamai score was 69 (range 60–83.5). Six patients achieved 'good' outcomes and one patient, with a double toe transfer, an 'excellent' outcome. The average follow-up time was 43 months (range 10–148 months). Conclusion: This study shows how even a single toe transfer can restore useful function to a hand that has otherwise lost all prehensile ability.
Novel expansion techniques for skin grafts
Authors: Kadam Dinesh
Published: May 2016

The quest for skin expansion is not restricted to cover a large area alone, but to produce acceptable uniform surfaces, robust engraftment to withstand mechanical shear and infection, with a minimal donor morbidity. Ease of the technique, shorter healing period and reproducible results are essential parameters to adopt novel techniques. Significant advances seen in four fronts of autologous grafting are: (1) Dermal–epidermal graft expansion techniques, (2) epidermal graft harvests technique, (3) melanocyte-rich basal cell therapy for vitiligo and (4) robust and faster autologous cell cultures. Meek's original concept that the sum of perimeter of smaller grafts is larger than the harvested graft, and smaller the graft size, the greater is the potential for regeneration is witnessed in newer modification. Further, as graft size becomes smaller or minced, these micrografts can survive on the wound bed exudate irrespective of their dermal orientation. Expansion produced by 4 mm × 4 mm sized Meek micrografts is 10-folds, similarly 0.8 mm × 0.8 mm size micrografts produce 100-fold expansion, which becomes 700-fold with pixel grafts of 0.3 mm × 0.3 mm size. Fractional skin harvest is another new technique with 700 μ size full thickness graft. These provide instant autologous non-cultured graft to cover extensive areas with similar quality of engraftment surface as split skin grafts. Newer tools for epidermal blister graft harvest quickly, with uniform size to produce 7-fold expansions with reproducible results. In addition, donor area heals faster with minimal scar. Melanocyte-rich cell suspension is utilised in vitiligo surgery tapping the potential of hair root melanocytes. Further advances in the cell culture to reduce the cultivation time and provide stronger epidermal sheets with dermal carrier are seen in trials.
Academic use and attitude of the 1st year medical students toward smartphones in a North Indian city
Authors: Rohilla Jyoti , Rohilla Ravi , Rohilla Aarti , Singh Kamal
Published: May 2016

ABSTRACT

Objective:

Smartphones have evolved from luxury to essential need items in general population nowadays. iOS by Apple, Android by Google, Windows by Microsoft and Blackberry account for the majority of smartphone operating system which are currently in use today.

Materials and Methods:

The present study was done among 350 students of medical, dental, nursing and physiotherapy streams to know the prevalence of smartphone use and attitude towards its use. Of the 350 students enrolled in the study, 257 completed the questionnaire with a response rate of 73.4%.

Results:

Out of 222, 198 had android devices, 13 had iPhones, and 11 had other operating systems including Windows and Blackberry. 191 (74.3%) of the subjects had a working email account.

Conclusion:

First year students have positive perception towards smartphone use and medical schools should encourage the use of medical applications among them. However, students and medical professionals should be cautious of the negative issues with smartphone use.
Investigation of postoperative satisfaction of facial autologous fat grafting with platelet-rich plasma
Authors: Qi Xiangdong , Zhou Jie
Published: May 2016

ABSTRACT

Objectives:

This single-center prospective, case-controlled study investigated satisfaction and esthetic results as rated by the physician and patient, respectively, by following up thirty patients with aging face, who underwent facial autologous fat grafting with platelet-rich plasma (PRP).

Materials and Methods:

A retrospective review of thirty patients, who were suffering from facial sagging or partial depression and requiring autologous fat grafting between February 2012 and September 2015. Photograph was taken before and 3-month after the operation. Patient and physician satisfaction was rated using visual analog scale (VAS) ranging from 1 (least satisfied) to 10 (most satisfied) 3 months after the operation. Statistical difference between the patient and physician satisfaction scores was analyzed by SPSS 17.0 software.

Results:

The patients' average age was 34.5 ± 1.2 years. The average VAS score of physician satisfaction was 7.9 ± 1.0, and the average VAS score of patient satisfaction was 8.0 ± 1.2. There was no statistically significant difference between the two groups in scores (P = 0.859; P > 0.05).

Conclusion:

There is no evidence that different donor sites or different donor-site preparation will lead to different outcomes. Multilevel injection is recommended for autologous fat injection. The high satisfaction scores indicated a good esthetic result of facial autologous fat grafting with PRP. Autologous fat as one of the popular soft tissue fillers is durable and safe. The biggest challenge is the high variation in absorption rate. PRP may lead to higher survival rate of fat and satisfaction level. The stability of survival rate of autologous fat grafting with PRP and the connection between complications and PRP technique need further study.
Fat distribution in the rotator cuff interval determining the coracohumeral ligament visualization: Magnetic resonance imaging findings
Authors: Li Jinqing , Song Linheng , Yu Zhibo , Qiao Qing , Li Fusuo , Zhang Yunquan , Zhang Hongguang , Lan Xiaochuan , Huang Min , Wu Yi , Zhang Shaoxiang
Published: May 2016

ABSTRACT

Objective:

The purpose of this study was to analyze how fat distribution in the rotator cuff interval (RCI) in normal volunteer shoulders determines the coracohumeral ligament (CHL) visualization, including the CHL visualization rate, type, and thickness, using routine magnetic resonance imaging (MRI).

Materials and Methods:

This study prospectively analyzed 120 shoulder joints in 60 normal volunteer individuals (30 males and 30 females) using MRI to identify the fat distribution type in the RCI as well as the CHL visualization rate, type, and thickness.

Results:

The fat in the RCI was visualized in 110 of 120 shoulders (91.7%) while the fat in the RCI was not identifiable in 8.3% of normal volunteer shoulders. The fat distribution in the RCI was classified into five types: Type A (52.5%), Type B (26.7%), Type C (5.8%), Type D (6.7%), and Type E (8.3%). The CHL types included the horizontal type (73.3%), upsloping type (12.5%), downsloping type (5.9%), and unseen type (8.3%) (The CHL was not identifiable in 8.3% of normal volunteer shoulders). No significant difference existed for the fat distribution types in the RCI or the CHL visualization rate, types, or thickness in either different lateral shoulders or different gender shoulders, using a Chi-square test (P > 0.05). In addition, no significant correlation emerged between body mass index (23.4 ± 2.5, n = 110) and the CHL thickness (3.1 ± 1.3 mm) in normal volunteer shoulders, using the Pearson correlation test (n = 110) (r = −0.095, P> 0.05).

Conclusion:

MRI is a satisfactory method for determining the fat distribution in the RCI and CHL depiction in normal volunteer shoulders. The fat distribution in the RCI determines the CHL visualization, including the CHL visualization rate, type, and thickness.
Domače govedo v romaniziranem jugovzhodnoalpskem prostoru : arheozoološki pogled
Authors: Toškan Borut
Published: May 2016

V članku obravnavamo vlogo domačega goveda (Bos taurus Linnaeus, 1758) v ekonomiji romaniziranega prebivalstva jugovzhodnoalpskega prostora. Študija je zajela 8.579 ostankov te vrste iz časa od sredine 1. stoletja pr. n. št. do 6. stoletja n. št., ki izvirajo iz 22 različnih vzorcev z najmanj 100 taksonomsko opredeljenimi najdbami. Rezultati so potrdili izjemen pomen govedoreje, ki je temeljila na uvoženi napredni rimski pasmi in je bila primarno usmerjena v izkoriščanje sekundarnih proizvodov reje. Z nastopom politično in varnostno nestabilne pozne antike se je število goved močno zmanjšalo, v ospredje pa so zopet prišle sicer nizkorasle, a vzrejno manj zahtevne tradicionalne lokalne forme.
De mortibus persecutorum med krščansko in pogansko historiografijo
Authors: Maver Aleš
Published: May 2016

Prispevek obravnava razmerje Laktancijevega najbolj znanega spisa De mortibus persecutorum do krščanskega in poganskega zgodovinopisja. Pogosto je bilo namreč izraženo mnenje, da njegovo pisanje kljub svoji tematiki s historiograftjo nima mnogo skupnega.
Prevzete besede iz latinščine. Latinski samostalniki, ki so postali slovenski samostalniki
Authors: Lajevec Eva
Published: May 2016

Latinski samostalniki, ki so postali slovenski samostalniki Izvleček Pričujoči članek predstavlja latinske samostalnike, ki so ob prevzetju v slovenščino ohranili svojo besednovrstno pripadnost, in poskus njihovega razporejanja po oblikoslovnih kategorijah. Pri tem opozarja predvsem na vlogo, ki sta jo pri prevzemanju latinskih prvin imeli francoščina in nemščina, na jezikovno zmožnost prevzemalcev ter na nekaj zanimivih primerov, ko je izid prevzemanja v slovenščino drugačen od pričakovanega.
Applying Electronic Medical Records in health care
Authors: Abdekhoda Mohammadhiwa , Dehnad Afsaneh , Noruzi Alireza , Gohari Mahmodreza , Ahmadi Maryam
Published: May 2016

In order to fulfill comprehensive interoperability and recognize the electronic medical records (EMRs’) benefits, physicians’ attitudes toward using and applying EMR must be recognized.

The purpose of this study was to present an integrated model of applying EMRs by physicians.

This was a cross sectional study in which a sample of 330 physicians working in hospitals affiliated to the Tehran University of medical sciences (TUMS) was selected. Physicians’ attitudes toward using and accepting EMR in health care have been analyzed by an integrated model of two classical theories i.e. technology acceptance model (TAM) and diffusion of innovation (DOI). The model was tested using an empirical survey. The final model was tested by structural equation modeling (SEM) and represented by Analysis of Moment Structures (AMOS).

The results suggest that the hybrid model explains about 43 percent of the variance of using and accepting of EMRs (R2=0.43). The findings also evidenced that Perceived Usefulness (PU), Perceived Ease of Use (PEOU), Relative Advantage, Compatibility, Complicatedness and Trainability have direct and significant effect on physicians’ attitudes toward using and accepting EMRs. But concerning observeability, significant path coefficient was not reported.

The integrated model supplies purposeful intuition for elucidates and anticipates of physicians’ behaviors in EMRs adoption. The study identified six relevant factors that affect using and applying EMRs that should be subsequently the major concern of health organizations and health policy makers.

Citation: Abdekhoda M, Ahmadi M, Dehnad A, Noruzi A, Gohari M. Applying electronic medical records in health care: Physicians’ perspective.
La entrevista como herramienta para la evaluación de las competencias genéricas: formación y construcción de un consenso sobre evidencias.
Authors: Poblete Ruiz Manuel , Fernández Nogueira Donna , Campo Carrasco Lucía , Nöel López Marcelo
Published: May 2016

La actual realidad educativa en la Educación Superior está caracterizada por la implementación del proceso de convergencia europeo. Un  factor clave es el protagonismo del estudiante en el modelo de aprendizaje basado en competencias, donde el proceso de evaluación es un factor importante a desarrollar. En el presente estudio, cinco profesores de la Universidad de Deusto diseñaron una entrevista como herramienta de evaluación de cuatro competencias genéricas. La entrevista se aplicó a 21 estudiantes de un curso de emprendizaje social. Para la evaluación, se definieron lo que se considerarían evidencias de desempeño en las respuestas. Por último, se validaron los resultados aplicando el coeficiente de similitud de Gower. Los resultados sugieren una alta similitud en la evaluación de evidencias entre los cinco docentes, lo cual aporta fiabilidad a la medición. Se puede concluir que, existiendo un consenso en los criterios de evaluación entre docentes, se puede mejorar la fiabilidad de las evaluaciones a los estudiantes, así como se aporta una herramienta para su evaluación.
Relación entre consumo de tabaco y alcohol y el autoconcepto en adolescentes españoles
Authors: Álvaro González Jose Ignacio , Zurita Ortega Félix , Castro Sanchez Manuel , Martínez Martínez Asunción , García Sánchez Susana
Published: May 2016

La etapa adolescente constituye una fase esencial en el desarrollo de la persona; en estas edades las relaciones sociales y la adquisición de la personalidad son elementos claves, por tanto se planteó el siguiente estudio con los objetivos de determinar el autoconcepto de los adolescentes y cada una de sus dimensiones, así como describir el consumo habitual de alcohol y tabaco en la población adolescente y analizar las relaciones existentes entre el autoconcepto y las sustancias nocivas (alcohol y tabaco). Participaron un total de 2.134 adolescentes que permitió el registro y evaluación de las variables Autoconcepto (AF5), Consumo de Tabaco (FTND) y Consumo de Alcohol (AUDIT). Los resultados mostraron que el autoconcepto global era alto en los adolescentes, que en su mayoría eran no fumadores y el consumo de alcohol era perceptible únicamente en tres de cada diez jóvenes; y entre las dimensiones las más puntuadas eran la familiar y la social. Se encontró asociación en el caso de las dimensiones de autoconcepto familiar, académico y social con el consumo de alcohol, sin embargo debe señalarse que el número de adolescentes que ingerían alcohol era bastante escueto por lo que debemos ser cautos con dicha afirmación.
La valoración que los graduados tienen sobre su formación universitaria desde su situación laboral actual
Authors: Sanchez-Gelabert Albert , Navarro-Cendejas José
Published: May 2016

En este artículo analizamos la valoración de los titulados universitarios sobre la formación recibida y su utilidad en la ocupación actual. El objetivo es analizar si existen diferencias por el nivel formativo de origen y el sexo de los estudiantes. A su vez, examinamos si las características de la situación laboral intervienen en estas relaciones afectando diferencialmente según las características sociodemográficas. Los resultados muestran la existencia de diferencias valorativas entre los jóvenes según su origen social y sexo, siendo las mujeres y los jóvenes de clase trabajadora los que valoran mejor su formación recibida. Finalmente, con la introducción de la situación laboral como variable de control constatamos que, en algunos casos, estas diferencias valorativas son debidas al contexto laboral actual de los graduados más que a diferencias sociodemográficas.
Reconfigurando el sentido del liderazgo en organizaciones escolares contemporáneas: La perspectiva del liderazgo distribuido
Authors: Maureira Cabrera Óscar , Garay Oñate Sergio , López Alfaro Pablo
Published: May 2016

El liderazgo en las organizaciones escolares tiene una amplia base empírica y teórica que lo avala como factor de efectividad escolar. Alcanzando notoriedad por su estudio, programas de formación en políticas educativas y por sus efectos en procesos de enseñanza y aprendizaje. Las interrogantes de la problemática de discusión y sistematización de conocimiento, en que se enmarca esta revisión, se manifiestan en responder cómo se ha reconfigurado el liderazgo educativo, las características que le han identificado y cuál enfoque emerge como referente de mejora escolar sostenible, para un contexto iberoamericano. Constatándose como resultado una alta referencia en torno al liderazgo distribuido y sus diferentes adjetivaciones, destacándolo como opción y estrategia para afrontar desafíos de calidad y equidad. No obstante, es baja la cantidad de investigaciones, a gran escala y comparativa, que relacione cualquiera de las interpretaciones del liderazgo distribuido con mejora de la eficacia escolar.
Pautas de selección de materiales curriculares en la enseñanza del inglés como lengua extranjera
Authors: Malla García Noelia
Published: May 2016

El objetivo del presente estudio pretende analizar la selección de materiales curriculares didácticos y el papel que desempeñan en los procesos de enseñanza-aprendizaje. Antes de ello, se mencionará el concepto de análisis de necesidades a efectos de encontrar los mejores materiales que las puedan satisfacer. Se prestará especial atención a las posibilidades de selección, análisis y evaluación de materiales, en tanto que constituyen los principales medios de transmisión de los contenidos a los estudiantes intentando ayudarlos a desarrollar las competencias básicas establecidas en el Anexo I de la LOE. Se enfocará el presente estudio sobre materiales curriculares aplicados a la enseñanza de idiomas, hablando de las ventajas y desventajas de usarlos como recursos didácticos. Para finalizar, se expondrán algunas reflexiones en torno a la práctica docente, los libros de texto y materiales multimedia.
Estudio de la satisfacción de los estudiantes de Interpretación Textual de la Escuela Superior de Arte Dramático de Córdoba
Authors: Gil Palacios Miguel Francisco
Published: May 2016

El estudio de la satisfacción de los estudiantes es fundamental para conocer los errores y aciertos de una institución educativa superior con el fin de poner en práctica estrategias que conduzcan a una mejora en la calidad de su enseñanza. Con este fin, en este artículo hemos evaluado el grado de satisfacción de los estudiantes de Interpretación Textual de la Escuela Superior de Arte Dramático de Córdoba “Miguel Salcedo Hierro”. Alejándonos de los modelos habituales de medir la satisfacción, principalmente de carácter cuantitativo, hemos utilizado como eje metodológico la Teoría Fundamentada en Datos, y como técnicas, la entrevista comprehensiva de Kaufmann y los grupos de discusión. Los resultados han sido muy positivos, pues han mostrado que estos estudiantes tienen un alto nivel de satisfacción, lo que resulta muy valioso para conocer la calidad de esta enseñanza en el momento presente, así como para desarrollar planes específicos que conduzcan a su mejora en el futuro cercano.
Relación entre la edad del profesorado de música andaluz y el desarrollo de la Escuela TIC 2.0
Authors: Martos Sánchez Emilia , Pérez-García Purificación , Bernal Vázquez Julia
Published: May 2016

El objetivo de este artículo era conocer si la edad se asociaba al desarrollo del programa andaluz Escuela TIC 2.0. en los profesores andaluces de Música de Educación Secundaria Obligatoria (ESO). Para esta investigación, la muestra estuvo compuesta por 207 docentes de música de la ESO, quienes cumplimentaron un cuestionario sobre los diferentes aspectos que conllevaba dicho programa en conexión con su área, tales como la formación en TIC, las tecnologías en el aula, la actitud hacia las TIC y las competencias, los recursos digitales, o la vinculación entre las familias y la Escuela TIC. Dicho cuestionario, fue sometido tanto a la validación estadística por componentes principales como a la validación de jueces y a procedimientos de fiabilidad mediante el alpha de Cronbach y las dos mitades. Se aplicó un análisis de contingencias y los resultados mostraron que el profesorado entre 25 y 35 años usaba otras webs en el aula,  integraba las TIC porque creía que aumentaban la calidad del aprendizaje y conocían más el correo electrónico. El profesorado de 35 a 44 años manifestó más aceptación por el proyector mientras que el mayor de 55 años, aunque tenía formación en tecnología, prefería la metodología tradicional.  El estudio reveló que, efectivamente, la edad del profesorado de música andaluz de la ESO estaba relacionada con la determinación de incorporar las TIC y el desarrollo de la Escuela TIC 2.0
Manipulación emocional televisiva como instrumento para someter a los pueblos latinoamericanos
Authors: Taibo Rodríguez Lautaro Matias
Published: May 2016

La construcción de nuevos polos de poder en el área de medios de comunicación es la herramienta para contribuir a la ruptura de la dominación de los imperios sobre nuestros territorios. Se hace impostergable centrar los ejes de las discusiones contemporáneas en el papel de los medios de comunicación y en la influencia de los mismos a la hora de fortalecer o debilitar el apoyo de la población a diferentes gobiernos populares. Para esto es necesario analizar las principales herramienta que se utilizan en la tan nombrada y aun así poco explorada “Guerra de Cuarta Generación”.En nuestro trabajo hemos interpretado la manipulación emocional ejercida tanto por los noticieros estelares de los medios de comunicación Canal 7 (La tv Pública) y Canal 13 (el Trece) de Argentina, como por los de los canales Globovisión y VTV (Venezolana de Televisión) en la República Bolivariana de Venezuela. Para esto hemos creado una nueva metodología de investigación denominada “Deconstruccionismo Sensorial” la cual tiene como particularidad que, para su aplicación, el investigador debe anular algunos de sus sentidos sensoriales para evitar ser manipulado mientras realiza la investigación. Los resultados obtenidos constituyen ejes centrales para entender en de qué forma operan las armas de manipulación televisivas.
Carcass physical composition and physic-chemical characteristics of meat from Nellore cattle
Authors: Freitas Aline Kellermann de , Restle João , Missio Regis Luis , Pacheco Paulo Santana , Padua João Teodoro , Miotto Fabrícia Rocha Chaves , Greco Leandro Ferreira , Lage Moacir Evandro , Neiva José Neuman Miranda
Published: May 2016

Assessment of carcass physical composition and physicochemical characteristics of meat from Nellore males distributed randomly into three treatments: males castrated at 13 months of age at puberty (n=26); castrated at 18 months of age, 15 days before confinement (n=26); and young bulls (n=25). For the evaluation of meat chemical characteristics, we used samples of 12 animals taken at random from each treatment. The experimental design was completely randomized. Animals were slaughtered at 22 months of age after 100 days of confinement. The carcasses of young bulls showed higher contents of muscle (66.46 %) and bone (16.03 %), and lower fat content (17.66 %), in relation to that of steers castrated at 13 (62.83,15.28, and 22.11 %, respectively) or 18 months (63.99, 15.29, and 21.53%, respectively), which did not differ amongst themselves. The meat of young bulls was darker (3.07 points) than the meat from those castrated at 13 months of age (3.43 points), while the meat from those castrated at 18 months displayed an intermediate color (3.29 points), not differing from the others. Young bulls yielded meat with lower content of intramuscular fat (3.18 points) and lipids (3.81%) in relation to those castrated at 13 (4.58 points and 6.77%, respectively) or 18 months (4.52 points and 5.66%, respectively). Protein content was higher (P 0.05) by the age of castration, with young bulls having lower values in relation to the castrated males. Castration of Nellore young bulls in early puberty increases the edible portion of the carcass due to the higher body fat deposit.
Energy and protein requirements of crossbred cattle in feedlot
Authors: Neves Maria Luciana Menezes Wanderley , Véras Antonia Sherlânea Chaves , Souza Evaristo Jorge Oliveira de , Ferreira Marcelo De Andrade , Valadares Filho Sebastião De Campos , Silva Gabriel Santana da , Carvalho Francisco Fernando Ramos de , Oliveira Diogo José Gomes de , Lima Edine Roberta de , Barreto Ligia Maria Gomes
Published: May 2016

The objective of this study is to predict the energy and protein requirements of crossbred dairy cattle in feedlot. The study was conducted at the Unidade Acadêmica de Serra Talhada, Universidade Federal Rural de Pernambuco, Brazil with 30 bulls with a body weight of 339.1 ± 35.4 kg. Five animals were slaughtered at the end of the adaptation period to serve as the reference group; the remainder of the animals was slaughtered after 112 days. The latter group was randomly allocated to receive five treatments: 0, 17, 34, 51 and 68% of concentrate in the feed using a completely randomized design. The dietary intake of the animals that were not given concentrate was restricted to 1.5% of their body weight; these animals composed the group fed for maintenance. The body composition and empty body weight (EBW) were estimated by means of the comparative slaughter method and full dissection of a half-carcass. The results showed that for crossbred dairy bulls in confinement, the net and metabolizable energy requirements were 86.49 and 138 kcal EBW-0.75 day-1, respectively, and the efficiency of use of metabolizable energy for maintenance and gain were 62.67% and 31.67%, respectively. The net energy (NEg) and net protein (NPg) requirements for gain can be estimated using the following equations, respectively: NEg= 0.0392*EBW0.75*EBWG1.0529 and NPg= 242.34 x EBWG - 23.09 x RE. The efficiency of use of metabolizable protein for gain was 25.8%, and the protein requirement for maintenance was 2.96 g EBW-0.75 day-1. The rumen degradable protein can supply 62.44% of the crude protein requirements of feedlot dairy crossbred bulls with a body weight of 450 kg while gaining 1 kg day-1.
Feed intake, nutrient digestibility, milk production and composition in dairy cows fed silage of wet brewers grain
Authors: Souza Leiliane Cristine de , Zambom Maximiliane Alavarse , Alcalde Claudete Regina , Fernandes Tatiane , Castagnara Deise Dalazen , Radis Ana Claudia , Santos Sérgio Mangano de Almeida , Possamai Ana Paula , Pasqualoto Michele
Published: May 2016

The aim of this study was to evaluate the supply of wet brewers grain silage with and without nutrient additives in ensiling (wheat bran, soybeans hulls and ground corn), and the effect of additives on the intake and digestibility of dry matter and nutrients as well as the efficiency, production and milk composition of Holstein cows. Four multiparous Holstein cows were used, with an average milk production of 25 liters per day. The cows were randomly assigned, via the Latin Square design (4x4), to one of four experimental diets. The experimental period was 21 days. The results obtained in the experiment were evaluated by analysis of variance, Fisher’s F test and Tukey’s test at 5 % probability. The experimental diets consisted of wet brewers grain silage alone, and this silage with the addition of wheat bran, soybean hulls or ground corn. The diets did not affect the initial body weight of the animals. Diets containing wheat bran and ground corn provided a higher intake of dry matter (21.78 and 21.50 kg day-1) and organic matter (20.42 and 20.22 kg day-1) compared to the wet brewers grain silage alone and the diet containing soybean hulls. The results observed for dry matter (636.96 and 632.96 g kg-1), organic matter (659.16 and 654.35 g kg-1 DM), crude protein (712.84 and 717.79 g kg-1 DM) and neutral detergent fiber (598.99 and 538.90 g kg-1 DM) when cows were fed diets containing soybean hulls and ground corn, respectively, were higher than other diets. The different diets did not change daily milk production, milk production corrected for 3.5 % fat or milk composition. The milk urea nitrogen from cows fed ground corn diets was a lower concentration (17.67 mg dL-1), however, it was still above the suitable range (10 to 14 mg dL-1). Providing wet brewers grain silage with soybeans hulls or ground corn to Holstein cows increased the digestibility of dry matter and nutrients. However, the use of silages with wheat bran, soybean hulls or ground corn did not alter the efficiency, production or milk composition of cows fed with these silages.