bluuebunny/crossref_metadata_2025 huggingface dataset:
Price to Compete … with Many: How to Identify Price Competition in High-Dimensional Space
Authors: Li Jun , Netessine Serguei , Koulayev Sergei
Published: September 2017

We study price competition in markets with a large number (in the magnitude of hundreds or thousands) of potential competitors. We address two methodological challenges: simultaneity bias and high dimensionality. Simultaneity bias arises from joint determination of prices in competitive markets. We propose a new instrumental variable approach to address simultaneity bias in high dimensions. The novelty of the idea is to exploit online search and clickstream data to uncover customer preferences at a granular level, with sufficient variations both over time and across competitors in order to obtain valid instruments at a large scale. We then develop a methodology to identify relevant competitors in high dimensions combining the instrumental variable approach with high-dimensional l − 1 norm regularization. We apply this data-driven approach to study the patterns of hotel price competition in the New York City market. We also show that the competitive responses identified through our method can help hoteliers proactively manage their prices and promotions.

The online appendix is available at https://doi.org/10.1287/mnsc.2017.2820 .

This paper was accepted by Vishal Gaur, operations management.
A DECISION MODEL FOR DETERMINING PUBLIC LOCATIONS SUITABLE FOR AUTOMATED EXTERNAL DEFIBRILLATOR (AED) DEPLOYMENT: A CASE STUDY IN CITY OF VALENCIA
Authors: Ekmekci Esin , Aragonés-Beltrán Pablo , Rodríguez de Sanabria Gil Rafael , Topcu Ilker
Published: September 2017

Automated external defibrillators (AED) offered a new perspective on resuscitation by enabling first-responders to deliver life-saving defibrillation within the critical first minutes after sudden cardiac arrest (SCA). This raised the question about where to place the AEDs. This study aims to provide a novel approach to the problem and to serve as a guideline for health policy decision makers in future projects. We used the Analytic Hierarchy Process (AHP) to form a decision model with four main criteria, and six sub-criteria. “Response time” was the most important criterion with an importance of 65.07%. Locations with the highest scores were a sports center, two stadiums, the central market, and the central bus station. A simple ranking of the alternatives would not be sufficient for the purpose of this study because the aim is to offer a guide for selecting locations for deploying AEDs rather than ranking the alternatives according to their suitability. Therefore, we formed priority groups. Sensitivity analysis showed that especially the alternatives in the first-priority group are not highly sensitive to changes, emphasizing their importance. https://doi.org/10.13033/ijahp.v9.i2.492
International Symposium on Analytic Hierarchy Process - ISAHP 2018
Authors: Rokou Elena
Published: September 2017

The upcoming ISAHP conference, ISAHP 2018, will take place in Hong Kong, July 13-15, 2018 in the Grand Hyatt Hong Kong and will be chaired by Dr Luis Vargas and Dr Jennifer Shang.The themes of this conference will be: AHP/ANP in Technology, Entrepreneurship and Corporate Social Responsibility and they focus on three areas that have changed the world in recent years.  However, rather than consider them as being independent, we need to think of them as interlocked because their future depends on each other.  Thus, it is befitting that the AHP/ANP focuses on them at this point in time, for the ANP helps us study interdependent systems.
Epistemological dimensions on screen: The role of television presentations in changing conceptions about the nature of knowledge and knowing
Authors: Guenther Lars , Kessler Sabrina H.
Published: September 2017

In (in)formal learning scenarios, individuals should develop epistemological beliefs (i.e., individual conceptions about the nature of knowledge and knowing) that are advantageous for understanding everyday science- and health-related information. To date, researchers measuring how to foster students’ discipline-specific epistemological beliefs have often tested researcher-designed texts in short-term interventions. Applying this logic to audio-visual stimuli, television clips might also affect (e.g., change) the epistemological beliefs of students. To test this assumption, three different television stimuli on the subject of Alzheimer’s disease with varying levels depicting the presented knowledge (as more advantageous, moderate, or less advantageous) were therefore selected by means of a content analysis, and their effects tested on a sample of 72 students using a pre-/post-test questionnaire. The results showed some partial support for the assumption that the epistemological beliefs of participants could become less advantageous when they are exposed to television clips depicting knowledge as moderate or less advantageous.
Effects of Corrective Exercise for Thoracic Hyperkyphosis on Posture, Balance, and Well-Being in Older Women: A Double-Blind, Group-Matched Design
Authors: Jang Hyun-Jeong , Hughes Lynne C. , Oh Duck-Won , Kim Suhn-Yeop
Published: September 2017

Background and Purpose:

The purpose of this study was to identify the effects of a corrective exercise for thoracic hyperkyphosis on posture, balance, and well-being in Korean community-dwelling older women.

Methods:

Fifty women 65 years of age and older, recruited from 2 senior centers, participated in this study. Participants were assigned to either the experimental group (EG) or the control group (CG) on the basis of convenience of location, and 22 in each were analyzed. Participants in the EG underwent a thoracic corrective exercise program 1 hour each session, twice per week for 8 weeks (a total of 16 sessions), which consisted of specific exercises to enhance breathing, thoracic mobility and stability, and awareness of thoracic alignment. The CG received education on the same thoracic corrective exercise program and a booklet of the exercises. Outcome measures included the extent of postural abnormality (angle of thoracic kyphosis, kyphosis index calculated both in relaxed- and best posture using flexicurve, the ratio of the kyphosis index calculated best posture/relaxed posture, craniovertebral angle, and tragus-to-wall distance), balance (Short Physical Performance Battery and limit of stability), and well-being (Geriatric Depression Scale Short Form and the 36-Item Short Form Health Survey [SF-36]). All data were collected by 6 blinded assessors at baseline, at 8 weeks after the completion of intervention, and at 16 weeks for follow-up.

Results and Discussion:

For participants of the EG, means of all parameters showed significant improvements over time (P < .05), with improved values both in comparison of baseline to postintervention and baseline to follow-up. Means of CG parameters were significantly improved in only the angle of thoracic kyphosis and the tragus-to-wall distance (P < .05). Furthermore, in all parameters, percent change between baseline and postintervention data was significantly (P < .05) higher for the EG than that for the CG, except for the limit of stability and SF-36 which improved but not significantly. All parameters between baseline and follow-up data were significantly (P < .05) higher for the EG than those for the CG, except for the limit of stability.

Conclusions:

The findings of this study suggest that a well-designed exercise program may be beneficial to improve spinal posture, balance, and well-being in older women with thoracic hyperkyphosis. We recommend the use of the therapeutic strategies utilized in this study to enhance thoracic posture, balance, and well-being of older women with thoracic hyperkyphosis. Future research is needed to apply this exercise protocol on a larger and more diverse population.
Psychopathy in the Medical Emergency Department
Authors: Benning Stephen D. , Molina Stephany M. , Dowgwillo Emily A. , Patrick Christopher J. , Miller Karen F. , Storrow Alan B.
Published: September 2017

Psychopathy is a personality disorder representing an admixture of a fearless and dominant temperament with an impulsive and antisocial orientation. A sample of 1,026 participants in the waiting room of the medical emergency department of a city hospital exhibited levels of fearless dominance similar to university undergraduates and federal inmates; their levels of impulsive antisociality fell between those of federal and state inmates. Both psychopathy factors were correlated with male gender, younger age, and more frequent average alcohol consumption. Fearless dominance was associated with agentic success (e.g., being employed, higher household income), fewer psychological problems, and less use of psychotropic medications, including anxiolytics. Impulsive antisociality was negatively related to both agentic and communal (e.g., ever being married) success and positively correlated with substance use and self-reported bipolar, ADHD, and psychotic psychiatric conditions. Further, only impulsive antisociality was associated with presenting to the emergency department for physical injury or psychological disturbance.
MECHANISMS IN ENDOCRINOLOGY: Clinical and pharmacogenetic aspects of the growth hormone receptor polymorphism
Authors: Boguszewski Cesar L , Barbosa Edna J L , Svensson Per-Arne , Johannsson Gudmundur , Glad Camilla A M
Published: September 2017

Pharmacogenetics aims to maximize the beneficial effects of a medical therapy by identifying genetic finger prints from responders and non-responders and, thereby improving safety and efficacy profile of the drug. Most subjects who are deficient in growth hormone (GHD) are candidates for recombinant human GH (rhGH) therapy. To date, it is well established that even after adjustments for several clinical variables, such as age, gender, body composition and the age at onset of the GHD, response to rhGH treatment is highly variable among individuals, part of which is believed to be due to genetic factors within the GH system. As the first genetic variant to potentially influence the individual response to rhGH therapy in children with growth disorders, polymorphism in the GH receptor (GHR) has attracted a great interest as a target for pharmacogenetics. Studies have been conducted to compare the functional and molecular effects of the full-length GHR (fl-GHR) isoform with the exon 3 deleted (d3-GHR) isoform in children and adults treated with rhGH therapy. Additionally, the impact of the GHR polymorphism has been investigated in relation to the clinical status and response to medical treatment in acromegaly, especially to the GHR antagonist drug pegvisomant. We have performed a narrative review of the studies performed to date on the association of GHR polymorphism with rhGH response in children and adults, and its potential influence in the medical management of acromegaly. In addition, data from studies on the general population and in other chronic diseases examining a role of this genetic variant in the regulation of growth and metabolism are summarized.
The Role of Socioeconomic Position in Determining Tooth Loss in Elderly Costa Rican: Findings from the CRELES Cohort
Authors: Barboza Solís DDS, MSc, PhD Cristina , Fantin MSc Romain
Published: September 2017

Objective: Differences in health status between socioeconomic groups continue to challenge epidemiological research. To evaluate health inequalities in tooth loss, using indicators of socioeconomic position (education level, occupation and subjective economic situation), in a large representative sample of elderly Costa Ricans, can contribute to conceive better adapted public health interventions. Methods: Data are from the Costa Rican Longevity and Healthy Aging Study (CRELES Pre-1945), a longitudinal study of a nationally representative sample of elders. 2827 participants were included in the study using data from the first wave conducted in 2005, and analyzed cross-sectionally. The sample was imputed for missing data using a multiple imputation model. Tooth loss was self-reported and informed about the quantity of missing teeth. Information on participant’s socioeconomic factors was collected via a questionnaire, including three measures approaching socioeconomic position: education level, occupation and subjective economic situation. Additional variables were included in the multivariate analyses as potential confounders. Results: Tooth loss was found to be strongly socially patterned, using variables characterizing socioeconomic position, mainly education level, occupational status and subjective economic situation. Conclusions: To highlight how socioeconomic position relates to tooth loss, can allow a better understanding of the origins of the social gradient in oral health, to tackle the most common chronic diseases across the world.
Migración en Chile: nuevo desafío para la formación de competencias culturales en estudiantes de enfermería
Authors: Jofre Soledad Alejandra , Sepúlveda Cerda Claudia Andrea
Published: September 2017

En las últimas dos décadas, Chile ha incrementado su tasa de inmigración nacional: la última estimación determinó que, para el año 2014, el 2,3 % de la población nacional correspondería a migrantes permanentes, lo cual se ha duplicado en los últimos 12 años. Ante este panorama, es necesario que la formación de profesionales de enfermería se adapte con el fin de responder a las nuevas necesidades sociales del país y, consecuentemente,  brindar cuidados considerando la diversidad cultural. El siguiente texto invita a reflexionar sobre la preparación brindada a los enfermeros en formación para la entrega de cuidados culturales sensibles, mediante la adquisición de competencias culturales. A partir de las evidencias, incluir el desarrollo de las competencias culturales en los diversos planes de estudio no es tarea fácil, por el contrario, es un desafío inmensurable. En el contexto de la innovación curricular de la carrera de Enfermería de la Universidad de Chile, se están implementando acciones orientadas a formar competencias culturales a través de la inclusión de un curso: de acuerdo con docentes y estudiantes, la experiencia es satisfactoria y necesaria, pero insuficiente para lograr el objetivo esperado. Dado lo anterior, es indispensable que los profesionales de enfermería desarrollen competencias culturales, máxime ante la oportunidad de generar nuevas estrategias que contribuyan al desarrollo de estas y de generar un modelo que permita avanzar en una gestión del cuidado más equitativa, inclusiva y con pertinencia cultural.
Chronic gastritis: Instructions for use of medications
Authors: Simanenkov V I , Vyalov S S
Published: September 2017

The paper highlights the features of drug use in the legal aspect. It analyzes instructions for medical use of proton pump inhibitors (PPIs) and gastric protective agents. Taking into account the characteristics of indications registered in the instruction, the authors discuss the possibility of using various PPIs. The instruction for medical application is an official document approved by the Ministry of Health, the basis of which is the data of trials carried out by a manufacturer, and it should be a key or fundamental source for a physician in choosing a medication. The use of a drug with no indications given in the manual (the so-called “off-label” use in foreign practice), is a clinical trial of a sort conducted by a physician individually, by taking upon himself/herself a legal liability. If arguments break out over the correct choice of this or that drug in treating the specific patient, the instruction containing the indications for use of specific medications to treat a specific disease is one of the proofs that the physician has correctly chosen the drug or a criterion for skilled medical care. The inclusion of chronic gastritis as a primary and only diagnosis into the primary documentation substantially limits the possibilities of using PPIs. When a PPI is indicated for therapy of erosive gastritis, a formal rationale is contained only in the instruction for use of Controloc. There are no registered indications for PPI use to treat chronic non-erosive gastritis; the gastric protective agent Rebagit is indicated.
Hyponatremia: A clinical approach
Authors: Shchekochikhin D Yu , Kozlovskaya N L , Kopylov F Yu , Syrkin A L , Shilov E M
Published: September 2017

Hyponatremia is the most common electrolyte metabolic abnormality in clinical practice. The unfavorable course of many diseases is associated with hyponatremia. Acute severe hyponatremia is life-threatening because cerebral edema may develop. Less obvious chronic hyponatremia increases the risk of balance problems, falls and fractures, especially in elderly patients. In any occasion, hyponatremia should not be now regarded only as a laboratory phenomenon in critically ill patients, but it necessitates a thorough clinical analysis of each individual case and appropriate therapy. The paper presents approaches to diagnosing and treating hyponatremia in various clinical situations.
Surface roughness analysis (RA) in the machining of Poly-Ether-Keton (PEEK) for tailored implants
Authors:   , Calvo-Correa M. P.
Published: September 2017

El objetivo de esta investigación es determinar los valores de velocidad de corte, avance y trayectoria (estrategia de mecanizado) en el mecanizado del PEEK que permitan obtener una rugosidad (Ra) recomendada según la literatura para la adecuada diferenciación, proliferación y adhesión de células mesenquimales aplicables en implantes óseos [3, 4, 6, 7, 11]. De la revisión del estado del arte se determinó que dichos procesos celulares se obtienen cuando la rugosidad superficial Ra tiene un valor entre 1 μm a 3 μm [9, 12], de igual forma, a mayor anisotropía superficial, mayor diferenciación celular se obtendrá [7, 8]. Para determinar los parámetros de corte con los que se obtiene una rugosidad Ra óptima se realizó un diseño experimental de superficie de respuesta con rangos de exploración de: velocidad de corte: 60 m/min - 90 m/min y velocidad de avance : 900 mm/min - 1500 mm/min usados para ambas estrategias evaluadas: Raster y Espiral. La investigación concluyó que los parámetros de mecanizado con los cuales se obtiene una rugosidad recomendada Ra para la elaboración de implantes óseos son: velocidad de avance 1500 mm/min y velocidad de corte de 90 m/min mecanizando con una trayectoria (técnica de mecanizado) Raster, con la cual se obtiene una rugosidad Ra de 2,7 μm.
Statistical analysis of the Fourier Spectra of the ENCODE regulatory regions
Authors:   , Paredes O.
Published: September 2017

En la actualidad, nuevas bases de datos genómicos (secuencias de ADN) son puestas al alcance del dominio público para su análisis. La bioinformática ha desarrollado algoritmos para extraer información y características de dichas secuencias. Sin embargo, estos algoritmos bioinformáticos tienen limitaciones. Una alternativa es utilizar herramientas propias del procesamiento digital de señales (DSP) adaptadas a secuencias genómicas (procesamiento de señales genómicas - GSP). El presente trabajo versa sobre el análisis de los cuatro primeros momentos centrales (media, desviación estándar, asimetría y curtosis) y dos momentos estadísticos (mediana y varianza) de los espectros frecuenciales de las 15 Regiones Reguladoras (RRs) de la base de datos ENCODE con el objetivo de estudiar diferencias estadísticas y frecuencias características. La base de datos seleccionada es “mapeada”. Luego, la FFT es calculada a estas señales genómicas y finalmente los momentos estadísticos son implementados. Los resultados muestran la existencia de 3 grupos de RRs utilizando la media, mediana y curtosis. La desviación estándar y la varianza, parecen no resaltar información importante. Finalmente, la asimetría revela un comportamiento homogéneo ante la presencia de valores atípicos en algunas RRs. Estas observaciones permiten inferir que la periodicidad dentro de la secuencia está relacionada o podría determinar la función biológica que desempeña la misma secuencia.
Mesenchymal Stem Cell Culture on Composite Hydrogels of Hydroxyapatite Nanoparticles and Photo-Crosslinking Chitosan
Authors:   , Alvarez-Barreto J.
Published: September 2017

El quitosano (QT) es un biopolímero que ha sido ampliamente utilizado en aplicaciones de ingeniería de tejido óseo, demostrando un gran potencial para este propósito. El presente estudio tiene como objetivo desarrollar un sistema de hidrogel entrecruzable in situ, compuesto de quitosano y nano-partículas de hidroxiapatita (HAP), un equivalente al componente mineral del hueso. El quitosano fue modificado, utilizando reacciones de carbodiimida, con ácido lactobiónico y ácido azidobenzoico para hacerlo soluble a pH fisiológico y foto-entrecruzable, respectivamente. El quitosano modificado fue mezclado en diferentes proporciones con HAP, y luego de una corta exposición a luz UV, se formaron hidrogeles. Células madre mesenquimales de médula ósea de rata (MSC) fueron sembradas sobre estos hidrogeles y cultivadas por 4, 10 y 16 días, bajo condiciones osteogénicas y no-osteogénicas. A través de ensayos de proliferación celular, actividad de fosfatasa alcalina, y microscopía confocal, se observó que la mayoría de las formulaciones soportan la adhesión y proliferación celular, mostrando importantes interacciones célula-biomaterial, y una diferenciación osteogénica temprana destacada en las formulaciones 70:30 y 50:50, QT:HAP. Algunas formulaciones del sistema foto-entrecruzable tienen potencial en aplicaciones de ingeniería de tejido óseo, y se propone estudios más detallados de diferenciación celular.
Effect of an experimental surface treatment on Y-TZP zirconia flexural strength
Authors:   , Gómez B. C.
Published: September 2017

Objetivo: Analizar el efecto del microgranallado superficial como tratamiento experimental de regeneración, en la resistencia flexural y esfuerzos residuales de una Zirconia Y-TZP, una vez ha sido alterada con otros tratamientos mecánicos como microarenado y fresado. Métodos: Un total de 75 probetas de Zirconia Y-TZP fueron divididas en cinco grupos n=15 y sometidas a tratamientos de superficie así: fresado y microarenado (Grupos 2 y 4) microarenado + microgranallado y fresado + microgranallado (Grupos 3 y 5), y comparadas con un grupo control (Grupo 1), mediante Difracción de Rayos X (DRX), Microscopía electrónica de barrido (SEM), Microscopía confocal (CLSM) y sometida a falla en máquina universal de ensayos. Resultados: Los grupos de microgranallado y microarenado presentaron un aumento significativo de la resistencia flexural p=0.0082 con relación al grupo de fresado. Las mediciones mediante DRX no mostraron relación estadística con los cambios en la resistencia flexural. Significancia: Es posible que el microgranallado se considere un tratamiento para regenerar las propiedades mecánicas reducidas por fresado o arenado en la Zirconia Y-TZP.
Groundwater sampling from bores ~5 cm wide and < 60 m sampled depth v2
Authors: Lloyd Strack Michael
Published: September 2017

This protocol describes a method of sampling groundwater from bore-holes. The method was used in my PhD research on aquifer microbial ecology over two weeks at the Wellington Research Station in New South Wales, Australia. With a little practise, the method can probably be carried out solo by most people, although additional assistance would certainly speed things up. I managed to consistently sample and process groundwater from eight bores a day using this method; your mileage may vary depending on number of workers, distance between bores, and so on. The sampling protocol describes the use of an inertia pump for bores with an internal diameter of approximately 5 cm and a sampled depth of less than 60 m. It includes the measurement of bore information - such as depth and water table - as well as the use of water meters to measure the pH, dissolved oxygen, temperature and conductivity of groundwater, and of course the collection of the groundwater sample itself. Separete protocols will be provided for sampling narrow-diameter bores, sampling stygofauna, sampling surface soils, conducting colorimetric analysis of ferrous and sulphide anion concentrations, and further post-processing and analyses of the groundwater samples collected in this protocol.
Identifying Money Laundering in Business Operations as a Factor for Estimating Risk
Authors: Cindori Sonja , Slović Jelena
Published: September 2017

Money laundering and terrorist financing can be performed in many ways, regular business operations being among them. Business activities go through a large number of business changes, which offers numerous options for money or assets to enter the company via seemingly legal business transactions, enabling money or assets to remain in regular business flows once money laundering is completed. On the other hand, the opposite scenario, in which there is interest in money to be transferred from regular flows to alternative flows, including terrorism financing, is also common. This paper will discuss legal business operations as a framework for money laundering and terrorist financing. Cash flow cycles are presented in form of an algorithm as connections between irregularly and regularly acquired assets in the process of money laundering through business operations, as well as re-entry from regular flows into alternative cash flows. The “Butterfly Diagram”, presenting groups of business changes enabling entry of larger amounts of money and assets owned by a company in order to be laundered or their exit with the effect or tax evasion or terrorism financing, evolved from the algorithm. Also, the “Butterfly Diagram” includes certain forms of legal and tax misuse which enable legalizing the specified activities. The business reality is exceptionally dynamic and needs of money launderers keep growing, this is why there is an increase in types and numbers of business transactions that can be used for money laundering or terrorism financing, resulting in the need to keep modifying the presented “Butterfly Diagram”.
An Application-Oriented Design Method for Networked Driving Simulation
Authors: Abdelgawad Kareem , Gausemeier Jürgen , Trächtler Ansgar , Gausemeier Sandra , Dumitrescu Roman , Berssenbrügge Jan , Stöcklein Jörg , Grafe Michael
Published: September 2017

Autonomous and cooperative vehicle systems represent a key priority in the automotive realm. Networked driving simulation can be utilized as a safe, cost-effective experimental replica of real traffic environments in order to support and accelerate the development of such systems. In networked driving simulation, different independent systems collaborate to achieve a common task: multi-driver traffic scenario simulation. Yet distinct system complexity levels are necessary to fulfill the requirements of various application scenarios, such as development of vehicle systems, analysis of driving behavior, and training of drivers. With myriad alternatives of available systems and components, developers of networked driving simulation are typically confronted with high design complexity. There are no systematic approaches to date for the design of networked driving simulation in accordance with the specific requirements of the concerned application scenarios. This paper presents a novel design method for networked driving simulation. The method consists mainly of a procedure model that is accompanied by a configuration software. The procedure model includes the necessary phases for the systematic design of application-oriented platforms for networked driving simulation. The configuration software embeds supportive decision-making processes that enable developers to apply the design method and easily create different system models. The design method was validated by generating system models and developing platforms of networked driving simulation for three different application scenarios.
Efficiency of True-Green Light Emitting Diodes: Non-Uniformity and Temperature Effects
Authors: Titkov Ilya E. , Karpov Sergey Yu , Yadav Amit , Mamedov Denis , Zerova Vera L. , Rafailov Edik
Published: September 2017

External quantum efficiency of industrial-grade green InGaN light-emitting diodes (LEDs) has been measured in a wide range of operating currents at various temperatures from 13 K to 300 K. Unlike blue LEDs, the efficiency as a function of current is found to have a multi-peak character, which could not be fitted by a simple ABC-model. This observation correlated with splitting of LED emission spectra into two peaks at certain currents. The characterization data are interpreted in terms of non-uniformity of the LED active region, which is tentatively attributed to extended defects like V-pits. We suggest a new approach to evaluation of temperature-dependent light extraction and internal quantum efficiencies taking into account the active region non-uniformity. As a result, the temperature dependence of light extraction and internal quantum efficiencies have been evaluated in the temperature range mentioned above and compared with those of blue LEDs.
RELACIÓN ENTRE ÍNDICES ANTROPOMÉTRICOS DE SALUD CON EL CONSUMO DE ALIMENTOS EN ADULTOS MAYORES FISICAMENTE ACTIVOS
Authors: Valdés-Badilla Pablo Antonio , Godoy-Cumillaf Andrés , Ortega-Spuler Jenny , Díaz-Aravena Daniela , Castro-Garrido Nibaldo , Sandoval-Muñoz Luis , Herrera-Valenzuela Tomás , López-Fuenzalida Antonio , Vargas-Vitoria Rodrigo , Durán-Aguero Samuel
Published: September 2017

Introducción: Los programas enfocados en el envejecimiento activo no siempre cuentan con acciones que orienten a los adultos mayores en torno a la alimentación saludable. Situación que hace poco conocida la concordancia entre los hábitos de alimentación con las características morfológicas de este grupo de la población.Objetivo: Relacionar los índices antropométricos de salud con la frecuencia en el consumo de alimentos en adultos mayores físicamente activos (AMFA).Métodos: La muestra incluyó 307 adultos mayores chilenos físicamente activos de ambos sexos (8,4% varones), con una edad media de 70,2 años. Las variables estudiadas correspondieron al estado nutricional, adiposidad abdominal, riesgo cardiovascular y frecuencia en el consumo de alimentos. Se aplicó un modelo de regresión logística, considerando un α <0,05.Resultados: La ingesta de frutas OR=0,12 (IC95% 0,02-0,92) y el consumo de agua OR=0,20 (IC95% 0,04-0,90) se exhiben como factores protectores para la obesidad, en cambio, el consumo de alcohol OR=4,19 (IC95% 1,03-17,02) y snack dulces OR=10,68 (IC95% 1,85-61,74) se presentan como factores de riesgo para la obesidad. Además, la ingesta de verduras OR=0,32 (IC95% 0,11-0,92) se asoció como un factor protector frente a la adiposidad abdominal normal y el consumo de snack dulces OR=6,45 (IC95% 1,08-38,43) como un factor para presentar riesgo cardiovascular.Conclusión: Los AMFA que presentan mayor frecuencia en el consumo de alimentos saludables, manifiestan también, mejor estado nutricional, adiposidad abdominal y menor riesgo cardiovascular respecto a los adultos mayores chilenos activos que exhiben conductas de alimentación menos saludables.
TELÓMEROS Y CALIDAD DE LA DIETA: UNA REVISION SISTEMATICA
Authors: Marti Amelia
Published: September 2017

Fundamento: Existen pocos estudios que hayan evaluado la relación entre la calidad de la dieta y la integridad telómerica en humanos. Los telómeros son regiones de ADN no codificante que se encuentran en los extremos de los cromosomas, cuya longitud además de indicar la esperanza de vida, indica el estado global de salud. El objetivo de la presente revisión sistemática es recopilar la evidencia existente sobre la relación entre la longitud de los telómeros y la calidad de la dieta para conocer el impacto que algunos nutrientes, alimentos y patrones dietéticos pueden tener sobre la homeostasis telomérica y por lo tanto, sobre la salud en general. Material y métodos: Se realizó una revisión sistemática tipo PRISMA en la base de datos PubMed para identificar los artículos publicados (en inglés o español) hasta diciembre de 2016 que cumplían los siguientes criterios: incluían sujetos humanos; eran estudios transversales; estudios de casos y controles; estudios de cohortes prospectivos o estudios de intervención; que evaluaban la relación de los nutrientes, alimentos o patrones dietéticos con la longitud de los telómeros. La estrategia de búsqueda incluía las siguientes palabras clave: Nutrients or food OR food groups OR diet OR dietary pattern OR eating pattern OR dietary habits OR diet type AND telomere attrition OR telomere length. En total, se incluyeron 19 estudios transversales, 5 estudios de casos y controles, 5 estudios de cohortes prospectivos y 2 estudios de intervención, incluyendo aquellos artículos que se encontraron por listas de referencias de otras publicaciones. Resultados: Se encontraron asociaciones positivas entre la longitud de los telómeros y la adherencia a la dieta mediterránea y el consumo de verduras y frutas. Los resultados obtenidos para otros nutrientes, alimentos o patrones dietéticos fueron incoherentes aunque parece que las carnes procesadas, cereales, alcohol y bebidas endulzadas podrían estar asociados con telómeros más cortos. Conclusiones: La intervención dietética, y en particular la promoción de una dieta de estilo mediterráneo, podría desempeñar un papel en la protección de la integridad telomérica.
Probiotics for Fibromyalgia: Study design for a pilot double-blind, randomized controlled trial.
Authors: Roman Pablo , Estévez Angeles F , Sánchez-Labraca Nuria , Cañadas Fernando , Miras Alonso , Cardona Diana
Published: September 2017

Background: Fibromyalgia Syndrome (FMS) is a chronic, generalized and diffuse pain disorder accompanied by other symptoms such as emotional and cognitive deficits. The FMS patients show a high prevalence of gastrointestinal symptoms. Recently it has been found that microbes in the gut may regulate brain processes through the gut-microbiota-brain axis, modulating thus affection, motivation and higher cognitive functions. Therefore, the use of probiotics might be a new treatment that could improve the physical, psychological and cognitive state in FMS, however, no evidence about this issue is available.Methods: This paper describes the design and protocol of a pilot study double-blind, placebo-controlled and randomized. We use validated questionnaires, cognitive task through E-Prime and biological measures like urine cortisol and stool faecal samples. The trial aim is to explore the effects of eight weeks of probiotics therapy in physical (pain, impact of the FMS, and quality of life), emotional (depression, and anxiety) and cognitive symptoms (attention, memory, and impulsivity) in FMS patients as compared to placebo. Discussion: This pilot study is the first, to our knowledge, to evaluate the effects of probiotics in FMS. The primary hypothesis was that FMS patients will show a better performance on cognitive tasks, and an improvement in emotional and physical symptoms. These results will contribute to a better understanding in the gut-brain axis. Here we present the design and protocol of the study.
Octava Lección Jesús Culebras Medicina Intensiva, nutrición e hiperglucemia: una relación muy estrecha
Authors: Mesejo Arizmendi Alfonso
Published: September 2017

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Efecto del consumo de quinua (Chenopodium quinoa) como coadyuvante en la intervención nutricional en sujetos prediabéticos.
Authors: López Román Francisco Javier , Abellán Ruiz María Salud , Barnuevo Espinosa María Dolores , García Santamaría Carlos , Contreras Fernández Carlos Javier , Aldeguer García Miriam , Soto Méndez Fulgencio , Guillén Guillén Isabel , Luque Rubia Antonio Jesús , Quinde Ràzuri Francisco Javier , Martínez Garrido Antonio
Published: September 2017

Introducción: La quinua es un pseudocereal que contiene hidratos de carbono de bajo índice glucémico, fibra alimentaria, proteínas de alto valor biológico, fitoesteroles y ácidos grasos n-3 y n-6 que ha suscitado interés en la intervención nutricional de la prediabetes. Este estudio aleatorizado (2:1), controlado con placebo y doble ciego evaluó los efectos de la quinua sobre el índice de masa corporal (IMC), hemoglobina glicada (HbA1c), glucemia basal (GB) y el grado de saciedad y plenitud en pacientes prediabéticos. Material y método: Se aleatorizaron (2:1) 30 pacientes en dos ramas a estudio: el producto Kuska Active (quinua procesada) y placebo (maltodextrina). El periodo de ingesta fue de 28 días. Antes de iniciar el tratamiento y a los 28 días se determinó el IMC, HbA1c y la GB. La sensación de saciedad y plenitud se evaluó mediante escala visual analógica (EVA).  Para demostrar la eficacia de la quinua procesada Kuska Active sobre las variables a estudio se realizó ANOVA para medidas repetidas con dos factores a estudio (factor intrasujeto: tiempo y factor intersujeto: producto consumido). Resultados: Finalizaron un total de 29 pacientes (placebo, n=10; quinua, n= 19). Se detectó en el grupo quinua procesada una disminución significativa en los valores de IMC (p<0,05), HbA1c (p<0,001) y un aumento en la sensación de saciedad y plenitud (p<0,001). No se encontraron diferencias significativas en los niveles de GB desde el momento basal hasta el periodo post-ingesta. Conclusiones: Los resultados muestran que la quinua procesada disminuye el IMC, los niveles de HbA1c, mantiene los niveles de GB y aumenta la sensación de saciedad y plenitud en pacientes prediabéticos.
PENGARUH KUALITAS LAYANAN SIRKULASI TERHADAP KEPUASAN PEMUSTAKA PADA PERPUSTAKAAN SMK-PP NEGERI KUPANG
Authors: Widaryono Widaryono
Published: September 2017

Penelitian ini bertujuan untuk mengetahui pengaruh dimensi libqual dalam kualitas layanan sirkulasi di perpustakaan SMK-PP Negeri Kupang dan menganalisis faktor yang paling dominan memengaruhi kepuasan pemustaka. Dimensi libqual kualitas pelayanan yang dianalisis meliputi akses terhadap informasi (X1), sikap dan kemampuan petugas dalam melayani (X2), kemampuan pencarian informasi secara individu (X3), dan perpustakaan sebagai tempat (X4). Populasi penelitian adalah siswa SMK-PP Negeri Kupang sebanyak 364 orang, dengan sampel penelitian 79 orang yang diambil secara acak sederhana. Berdasarkan analisis statistik diperoleh persamaan regresi Y = -0,902 + 0,258 X1 + 0,262 X2 +     -0,042 X3 + 0,491 X4. Indikator pada penelitian ini bersifat valid dan variabelnya reliabel. Secara parsial, variabel yang paling berpengaruh terhadap kepuasan pemustaka adalah perpustakaan sebagai tempat dengan koefisien regresi 0,491, diikuti sikap dan kemampuan petugas dalam melayani (0,262) dan akses terhadap informasi (0,258), sementara variabel pencarian informasi secara individu (-0,042) tidak memengaruhi kepuasan pemustaka. Secara simultan, keempat variabel tersebut berpengaruh terhadap kepuasan pemustaka dengan nilai F hitung 33,720 dan signifikansi 0,000<0,005. Nilai koefisien determinansi (R2) sebesar 0,627. Hal ini berarti 62,7% kepuasan pemustaka dipengaruhi oleh akses terhadap informasi, sikap dan kemampuan petugas dalam melayani, kemampuan pencarian informasi secara individu, dan perpustakaan sebagai tempat, sisanya 37,3% dipengaruhi oleh variabel lain di luar penelitian.
Nitrogen and Grazing Affect Napier Grass Leaf Litter Biomass and Decomposition
Authors: Apolinário Valéria X. O. , Dubeux José C. B. , Lira Mário A. , Mello Alexandre C. L. , Santos Mércia V. F. , Muir James P. , Viana de Freitas Erinaldo
Published: September 2017

Core Ideas

Stocking rate reduced litter deposition.

Management intensity affected litter decomposition.

Nitrogen fertilization did not change litter deposition in grazed pastures.

Stocking rate (SR) and N fertilization are important management practices that may alter nutrient cycling. We tested three SR [2, 3.9, and 5.8 animal units (AU) ha−1; 1 AU = 450 kg BW] and three N rates (0, 150, and 300 kg N ha−1yr−1) on litter mass, chemical composition, and decomposition in a napier grass (Pennisetum purpureum Schum.) pasture. Fertilizer rate did not change (P = 0.4658) litter accumulation but decomposition after 254 d was greatest (P ≤ 0.05) at the greatest management intensity. Litter mass was affected by a year × month interaction (P ≤ 0.01), but in general the greatest litter mass occurred (P ≤ 0.05) at the end of the growing season, and carried over to beginning of the next growing season. There was a SR × year interaction for litter mass. At 3.9 and 5.8 AU ha−1, litter mass was greater in 2009 than in 2010. Visual observation indicated that in 2010 at the 3.9 and 5.8 AU ha−1 SR, the napier grass pasture was degrading, generating less biomass and consequently less litter than in 2009. In general, litter C/N ratio was above 30. There was no effect of SR (P = 0.2684) or SR interaction with year (P = 0.1558) on litter N concentration, with an average of 14 g N kg−1. Our results indicated that napier grass management affect litter mass and C/N ratio. This has implications for litter decomposition and nutrient dynamics in these pastures.
Factors Affecting the English Reading Literacy of Junior High School Students
Authors: Setianingsih Ika Sulis
Published: September 2017

This study aims at finding out how: (1) amount of input, (2)  amount of vocabulary, (3) learner’s motivation, (4) amount of input, amount of vocabulary, and learner’s motivation affect the English reading literacy; (5) amount of input affects amount of vocabulary, (6) amount of vocabulary affects learner’s motivation, and (7)  amount of input affects learner’s motivation. This study was an ex-post facto. The population comprised year VII students of SMP’s in Bantul District in the second semester of the academic year of 2013/2014. A sample of 384 students was established using the proportional sampling technique. The data were collected through a close-ended questionnaire and test. The close-ended questionnaire was used to collect the data related to students’ learning input and motivation. The test was used to find out the students’ knowledge on vocabulary and reading comprehension. The data were analyzed by employing the linear regression analysis for the linear variables, continued by the multiple regression analysis for the whole variables, and then followed by partial correlation. The findings showed that there is a significant effect of: (1) amount of input; (2) amount of vocabulary; (3) amount of inputs, the learner’s motivation, and amount of vocabulary; (4) amount of inputs and learner’s motivation; (5) learner’s motivation and amount of vocabulary; and (6) amount of inputs and amount of vocabulary on the English reading literacy of SMP students in Bantul District. Meanwhile, there is no significant effect of learner’s motivation on the English reading literacy of SMP students in Bantul District.
Perancangan E-Commerce pada PT DAF
Authors: Rudy Rudy , Abraham George Aryanto , A Ryan M , Yohanna Yohanna
Published: September 2017

The purpose of this study is to analyze and design e-commerce at. DAF to help the sales process is then expected to improve service. The methodology used is the method of analysis, where the review is held directly to the field, observing and analyzing the data obtained, and using the design method, which includes design of business models, screen designs and database design. Results to be achieved is the application of e-commerce web-based, whereby the system can enable customers to obtain the desired information is complete, make transactions easier and faster. Conclusions obtained are PT DAF can take advantage of e-commerce to support their business today and an appropriate business model is the highest-quality models.
Perancangan Program Aplikasi Kriptografi Menggunakan Algoritma Magenta dengan Panjang Kunci 128 Bit
Authors: Wibisono Steffie Hugh , Santoso Djunaidy
Published: September 2017

Along with the development of computer technology, the growing crimes against the computer. Crimes against the computer makes people increasingly competing to make the algorithms-algorithms that can maintain the confidentiality of data. Algorithms algorithm Magenta is one of the many algorithms that exist today. Magenta algorithms have been developed since 1990 by using a simple and transparent technique that can be implemented in hardware and software. First time algorithms are analyzed using the butterfly structure - the structure of the butterfly which was then replaced by a Fast Hadamard Transform (FHT) shuffle structure which has the advantage of providing some structure in each level. In 1994 there was a slight change in the use of hardware that was not processed according to plan so that now the algorithm used by Deutsche Telekom Magenta for secure management of sensitive data with 128-bit key length. These algorithms break the 128-bit key length into 16 blocks with each block containing the 8-bit and one other advantage of this algorithm is the recursive part is calculated repeatedly at each iteration.
Analisis dan Perancangan Electronik Customer Relationship Management Pada Klinik XYZ
Authors: Suhartono Joni
Published: September 2017

This research is to foster a good connection between company and customers. For customers, e-CRM will accommodate in interation and transaction with the company. This research is done because there are still weaknesses for customer’s service. The research method used is literature, analysis method, and also designing method in identifying system needs then design one supporting system for the company. The research result is a CRM website that gives up-to-date information and suitable for customer needs. Therefore, CRM is hoped to help company giving a better service to customers.
Prediksi Pendapatan Sewa Dengan Data Mining Pada Perusahaan XYZ
Authors: Liana May , Sanjaya Christine , Widodo Agus , Martinus Marshall
Published: September 2017

XYZ Company has a program to predict leasing income that only predict in constant condition where every tenant assumed for leasing renewal. This research is done to build accurate income prediction system that accommodate in making strategic decision towards the company. Premier data collecting is through direct interview with the company management. The analysis is through data training from the previous years to build neural network model. The analysis result shows that this model has produced error total value that is smaller than the previous error total value in years before. Therefore, it could be concluded that data mining with neural network technique that produced more accurate leasing income that could help the company making decision based on the hidden information in the database.
Pemanfaatan Video Streaming Pada Sistem Keamanan Rumah Dengan Menggunakan Mobile Devices
Authors: Mahatmaputra Samuel
Published: September 2017

This research has been produced a function prototype of video streaming with JPEG/MJPEG picture quality in a residential security system using mobile device (cell phone). The security system is an early warning system which server will deliver text messaging to client if there is an event in the censor of home webcam to detect movement. The prototype is divided into two types, server and client. The client will be installed a mobile application that automatically activated if there is inbound message in specific port. Meanwhile, the application in user client is completed with functionality to visit particular webpage, one touch call to security phone numbers to do setting (previous research result). And, as the research objective this year, user will see the video streaming in a good quality from the object.