bluuebunny/crossref_metadata_2025 huggingface dataset:
Forecasting Stock Returns Based on a Time-Varying Factor Weighted Density Model
Authors: Gu Wentao ,   Department of Statistics, Zhejiang Gongshang University 18 Xuezheng Street, Xiasha Education park, Hangzhou 310018, China, Yang Yongwei , Liu Zhenshan
Published: October 2018

Stock returns play an important role in the empirical study of asset pricing, and are often applied in portfolio allocation and performance evaluation. The effect of macroeconomic and financial variables on stock returns is a hot topic and many studies have utilized these variables in time series models to improve the forecasts of stock returns. This study imposes macroeconomic and financial variables as weighting factors on kernel density and establishes a new prediction model – the time-varying factor weighted density model. We apply this model to monthly price data of the Chinese stock index and employ the rolling window strategy for out-of-sample forecasting. The result shows that this method improves both statistical and economic measures of out-of-sample forecasting performance.
Humanoid Robot Motion Modeling Based on Time-Series Data Using Kernel PCA and Gaussian Process Dynamical Models
Authors: Mi Jian ,   Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui 3-9-1 Bunkyo, Fukui, Fukui 910-8507, Japan, Takahashi Yasutake
Published: October 2018

In this article, contrary to popular studies on human motion learning, we focus on addressing the problem of humanoid robot motions directly. Performances of different kernel functions with principal components analysis (PCA) in Gaussian process dynamical models (GPDM) are investigated to build efficient humanoid robot motion models. A novel kernel-PCA-GPDM method is proposed for building different types of humanoid robot motion models. Compared with the standard-PCA-GPDM and auto-encoder-GPDM methods, our proposed method is more efficient in humanoid robot motion modeling. In this work, three types of NAO robot motion models are studied: walk-model, lateral-walk model, and wave-hand model, where motion data are collected from an Aldebaran NAO robot using magnetic rotary encoder sensors. Using kernel-PCA-GPDM method, the motion data are first projected from the high 23-dimension observation space to a 3-dimension low latent space. Then, three types of humanoid robot motion models are learned in the 3D latent space. Compared with other kernel-PCA-GPDM or auto-encoder-GPDM methods, our proposed novel kernel-PCA-GPDM method performs efficiently in motion learning. Finally, we realize humanoid robot motion representation to verify the motion models that we build. The experimental results show that our proposed kernel-PCA-GPDM method builds efficient and smooth motion models.
Reducing Lumbar Load with Active Corset
Authors: Yoshida Michihiro , Tanaka Takayuki , Tsuchiya Yoshio , Kusaka Takashi ,   Hokkaido University Kita 14, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-0814, Japan,   National Institute of Technology, Tomakomai College 443 Nishikioka, Tomakomai, Hokkaido 059-1275, Japan
Published: October 2018

This study describes the effect of Active Corset on the lumbar spine. Active Corset is assist tools used to prevent low back pain. It tightens the waist optimally according to the lumbar load during work. This study aimed to clarify the mechanical effect of tightening of the pelvis on lumbar joints and determine the mechanism leading to reduction of the lumbar load. Moreover, this study examined the phenomena commonly occurring among the subjects with reduced lumbar load by tightening of the pelvis. First, we will present some examples of currently used assist tools and demine the utility of the Active Corset among the various tools used. Next, the mechanism of the Active Corset will be described. Further, we will present a hypothesis about reducing the lumbar load by tightening the pelvis. After describing the change in the joint bending angle on tightening, we will describe reduction of burden from the antigravity torque around the lumbar joint. Finally, we will compare active tightening using Active Corset with tightening using a constant force and describe the advantage of active tightening.
Training System for Endoscopic Surgery Aiming to Provide the Sensation of Forceps Operation
Authors: Tokuyasu Tatsushi , Motodoi Kumiko , Endo Yuichi , Iwashita Yukio , Etoh Tsuyoshi , Inomata Masafumi ,   Fukuoka Institute of Technology 3-30-1 Wajiro-higashi, Higashi-ku, Fukuoka 811-0295, Japan,   Oita University 1-1 Idaigaoka, Hasama-machi, Yufu City, Oita 879-5593, Japan
Published: October 2018

In Japan, a rising number of endoscopic surgery operations have boosted an expectation for the development of a training environment for qualified surgeons. The endoscopic surgery operation requires the operator to operate forceps by hand based on two-dimensional operative field information displayed on the monitor. The characteristics of the operation include a lack of stereoscopic visual field information and movement of the tip of the forceps, which is symmetric about the trocar. These are issues that require an empirical solution from the operator. It is desirable that these issues have already been overcome before the operator starts practicing as an operating surgeon. To this end, it is effective to train the operator in the sensation of forceps operation, which associates the operative field vision with the forceps operation by hand. Therefore, this study includes digitizing the forceps operation by qualified surgeons and providing it to the trainee as visual and force information in order to build a training device that facilitates the cultivation of the sensation of forceps operation.
Sporun Psiko-Motor Gelişim ve Sosyal Gelişime Etkisi
Authors: YILDIZ Emre , ÇETİN Zeynep
Published: October 2018

Spor, hareket
içeren ve bireylerin sosyal çevrelerini genişleten bir olgudur. Bireyler, spor
sayesinde sosyal ortamlarda nasıl davranmasına ilişkin bazı sosyal becerileri
gözlemleme fırsatı bulurlar. Hareket içeren spor, aynı zamanda motor becerileri
de destekler. Çocuklar için de motor beceriler okul öncesi dönemde;
oyunlarındaki rolü ve mutluluğu açısından önemlidir. Okul öncesi dönemdeki bu
beceriler okul döneminde çocuğun ilgisi doğrultusunda sporda branşlara
yönlendirilebilinir. Çocuklar spor yaptığında hem motor becerileri hem de
sosyal becerileri desteklenmiş olacaktır. Aynı zamanda daha çok insanla
tanışıp, aynı sosyal ortamı paylaşma fırsatı bulacaklardır ve böylelikle
kişilerarası iletişim, gruba dahil olma, kendini tanıma ve sınırlılıklarını fark
etme, kazanma-kaybetme gibi duyguları yaşayıp öğrenme, kendini ifade etme,
özgüven kazanma gibi becerileri de spor yaparken kazanma fırsatları olacaktır.
Bunlara ek olarak spor yapmanın gelişimsel olarak katkısının yanı sıra beden
sağlığına da faydası olduğu toplum tarafından bilinen, yadsınamaz bir
gerçektir. Yukarıdaki bilgilerden yola çıkılarak bu makalede de sporun
psikomotor ve sosyal gelişimle etkileşimi irdelenmiştir.
Attractors for a nonautonomous reaction-diffusion equation with delay
Authors: Harraga Hafidha , Yebdri Mustapha
Published: October 2018

In this paper, we discuss the existence and uniqueness of solutions for a non-autonomous reaction-diffusion equation with delay, after we prove the existence of a pullback 𝒟-asymptotically compact process. By a priori estimates, we show that it has a pullback 𝒟-absorbing set that allow us to prove the existence of a pullback 𝒟-attractor for the associated process to the problem.
Design of Gravity Assist trajectory from Earth to Jupiter
Authors: Ammar M. K. , Oda D. A.
Published: October 2018

The goal of this paper is to find a combination of conical trajectories, using gravitational assisted maneuvers (swing-by), which perform the transfer from a nearby of the departure planet (Earth) to the vicinity of the arrival planet (Jupiter), making a closest approaches with Mars (flyby) to reduce the fuel consumption for the journey. A detailed description of the mission from Earth— Mars—Jupiter, that used this technique is presented. The table of flyby dates, altitudes of closest approaches is also included. A methodology known as the Patched Conics was used, where the trajectory is divided into three parts:

Departure phase, inside of the sphere of influence of the departure planet,

Heliocentric phase, during the journey between the planets,

Arrival phase, inside the sphere of influence of the arrival planet.
Numerical investigation on global dynamics for nonlinear stochastic heat conduction via global random attractors theory
Authors: Chen H. , Jiang Jingfei , Cao Dengqing , Fan Xiaoming
Published: October 2018

In term of the global random attractors theory, global dynamics of nonlinear stochastic heat conduction driven by multiplicative white noise with a variable coefficient are investigated numerically. It is shown that global 𝒟-bifurcation, secondary global 𝒟-bifurcation and complex dynamical behavior occur in motion of the system with increasing the intensity of linear component in the heat source. Furthermore, the results obtained here indicate that Hasudorff dimension which is relevant to global Lyapunov exponent can be used to describe global dynamics of the associated system qualitatively.
Attendance at university lectures: A study into factors which influence it, and exam performance as a consequence of it.
Authors: Khan Salim Neil
Published: October 2018

This article investigates whether various factors affect attendance rates at university lectures, and whether there is any relationship between attendance and exam performance. Data were collected over 7 years from a 3rd Year statistics module. It was found that the time of day that the lecture occurred made no difference to attendance, and that there was no difference in attendance between the genders. It was discovered that an increase in tuition fees led to a rise in attendance. Additionally, it was observed that higher attendance rates led to better exam performance.
Using LaTeX's moodle package and R's Sweave to easily create data-driven, up-to-date financial mathematics and statistics quizzes for Moodle
Authors: Jach Agnieszka
Published: October 2018

Preparation of Moodle quizzes which are data-based and contemporary tends to be tedious and time-consuming. By using innovative tools, this process can be simplified and automated, providing a substantial benefit to the teacher wishing to employ such quizzes, and ultimately improving student learning experience. The purpose of this article is to show how to create data-driven, up-to-date quizzes for Moodle in an easy fashion. The methodology is based on several popular, open-source, free tools, and its implementation details are demonstrated with an example. This makes the methodology readily-available to the practitioners.
Contents page
Authors: Owen Alun
Published: October 2018

Contents page.
Enhancing the Performance of the Distributed Gauss-Newton Optimization Method by Reducing the Effect of Numerical Noise and Truncation Error With Support-Vector Regression
Authors: Guo Zhenyu , Chen Chaohui , Gao Guohua , Vink Jeroen
Published: October 2018

Numerical optimization is an integral part of many history-matching (HM) workflows. However, the optimization performance can be affected negatively by the numerical noise existent in the forward models when the gradients are estimated numerically. As an unavoidable part of reservoir simulation, numerical noise refers to the error caused by the incomplete convergence of linear or nonlinear solvers or truncation errors caused by different timestep cuts. More precisely, the allowed solver tolerances and allowed changes of pressure and saturation imply that simulation results no longer smoothly change with changing model parameters. For HM with linear-distributed Gaussian-Newton (L-DGN), caused by the discontinuity of simulation results, the sensitivity matrix computed by linear interpolation might be less accurate, which might result in slow convergence or, even worse, failure of convergence.

Recently, we have developed an HM workflow by integrating the support-vector regression (SVR) with the distributed-Gaussian-Newton (DGN) method optimization method referred to as SVR-DGN. Unlike L-DGN that computes the sensitivity matrix with a simple linear proxy, SVR-DGN computes the sensitivity matrix by taking the gradient of the SVR proxies. In this paper, we provide theoretical analysis and case studies to show that SVR-DGN can compute a more-accurate sensitivity matrix than L-DGN, and SVR-DGN is insensitive to the negative influence of numerical noise. We also propose a cost-saving training procedure by replacing bad-training points, which correspond to relatively large values of the objective function, with those training-data points (simulation data) that have smaller values of the objective function and are generated at most-recent iterations for training the SVR proxies.

Both the L-DGN approach and the newly proposed SVR-DGN approach are tested first with a 2D toy problem to show the effect of numerical noise on their convergence performance. We find that their performance is comparable when the toy problem is free of numerical noise. As the numerical-noise level increases, the performance of the L-DGN degrades sharply. By contrast, the SVR-DGN performance is quite stable. Then, both methods are tested using a real-field HM example. The convergence performance of the SVR-DGN is quite robust for both the tight and loose numerical settings, whereas the performance of the L-DGN degrades significantly when loose numerical settings are applied.
Mechanical Response of Reservoir and Well Completion of the First Offshore Methane-Hydrate Production Test at the Eastern Nankai Trough: A Coupled Thermo-Hydromechanical Analysis
Authors: Yoneda Jun , Takiguchi Akira , Ishibashi Toshimasa , Yasui Aya , Mori Jiro , Kakumoto Masayo , Aoki Kazuo , Tenma Norio
Published: October 2018

During gas production from offshore gas-HBS, there are concerns regarding the settlement of the seabed and the possibility that frictional stress will develop along the production casing. This frictional stress is caused by a change in the effective stress induced by water movement caused by depressurization and dissociation of hydrate as well as gas generation and thermal changes, all of which are interconnected. The authors have developed a multiphase-coupled simulator by use of a finite-element method named COTHMA. Stresses and deformation caused by gas-hydrate production near the production well and deep seabed were predicted using a multiphase simulator coupled with geomechanics for the offshore gas-hydrate-production test in the eastern Nankai Trough. Distributions of hydrate saturation, gas saturation, water pressure, gas pressure, temperature, and stresses were predicted by the simulator. As a result, the dissociation of gas hydrate was predicted within a range of approximately 10 m, but mechanical deformation occurred in a much wider area. The stress localization initially occurred in a sand layer with low hydrate saturation, and compression behavior appeared. Tensile stress was generated in and around the casing shoe as it was pulled vertically downward caused by compaction of the formation. As a result, the possibility of extensive failure of the gravel pack of the well completion was demonstrated. In addition, in a specific layer, where a pressure reduction progressed in the production interval, the compressive force related to frictional stress from the formation increased, and the gravel layer became thin. Settlement of the seafloor caused by depressurization for 6 days was within a few centimeters and an approximate 30 cm for 1 year of continued production.
Analogy in the World of Geological Uncertainties, or How Reservoir Analogs May Refine Your Probabilistic Geomodel
Authors: Popova Oksana
Published: October 2018

Assessment of geological uncertainties based on probabilistic models has become widespread in the last few decades. One of the main problems of probabilistic modeling is the complexity of justifying ranges of variable parameters. Analogs play an important role in solving this issue. In this paper, the specifics of utilization of analogous information in probabilistic geological modeling are considered, and tools for integrating analogs and actual data in the model at different states of geological exploration are proposed. So, to justify the range of acceptable values of a parameter with analogs, it is rational to use statistical criteria, rather than minimum and maximum values among analogs list. This leads to reduction of sample size influence on estimate reliability. With a small amount of information, distribution type of an analyzed quantity can be proposed analytically. Most geological parameters can be described by normal and lognormal distributions. For complex quantities, the uncertainty of which is formed by several factors, the distribution type depends on their exploration maturity. As a rule, the greater the uncertainty, the stronger the mode of distribution is shifted towards smaller values. The refusal to use analog data in a probabilistic model should be made only if the object studies are sufficient to characterize the entire volume of the accumulation. In other cases it is recommended to use both actual field data and parameters collected from analogs.
Automating Simulation Research for Item Response Theory using R
Authors: LEE Sunbok , CHOİ Youn-jeng , COHEN Allan S.
Published: October 2018

A simulation study is a useful tool in examining
how validly item response theory (IRT) models can be applied in various settings.
Typically, a large number of replications are required to obtain the desired precision.
However, many standard software packages in IRT, such as MULTILOG and BILOG, are
not well suited for a simulation study requiring a large number of replications
because they were developed as a stand-alone software package that is best suited
for a single run. This article demonstrated how built-in R functions can be used
to automate the simulation study using the stand-alone software packages in IRT.
For a demonstration purpose, MULTILOG was used in the example codes in the appendices,
but the overall framework of a simulation study and the built-in R functions used
in this article can be applied for a simulation study using other stand-alone software
packages as well.
Comparación del índice de aerosol entre la provincia de Huancayo y la Estación Antártica Peruana Machu Picchu
Authors: Angeles Julio
Published: October 2018

El presente trabajo ha presentado evidencias que si existen diferencias significativas del índice de aerosol como la concentración de la columna total de ozono entre Huancayo y la Antártida, usando el satélite AURA con el sensor OMI. En el que se ha podido establecer la significancia estadística, asimismo se muestra que existe un incremento en las estaciones secas (otoño e invierno) de 0.4 a 0.8 y una disminución en la estación húmeda (verano y primavera) de 0.22 a 0.4 en la provincia de Huancayo. También se indica valores máximos de índice de aerosol el mes de setiembre de 0.98 y mínimo de 0.69 en el mes de mayo en la Antártida.En conclusión, el trabajo presenta el análisis de t-Student de 2 colas con variancias desiguales realizado; donde indica diferencias altamente significativas de las medias entre los índices de aerosol entre Huancayo y la Antártica siendo su p-value 8.3*10-10 al 5 % de nivel de significancia.
Implicancias en el uso del “maguey” (Agave americana L) y la “cabuya” (Furcraea occidentalis T) desde el horizonte tardío (inca): un continuo relacional enmarcado a partir del enfoque etnobotánico e histórico
Authors: Sucllar Efraín
Published: October 2018

Se desarrolla y amplia elementos de discusión acerca del origen y usos de dos especies de Agave Americano: Agave americana L. “maguey” y Furcraea occidentalis Trelease “cabuya” enhebrados desde el Horizonte Tardío (Inca) hasta las economías campesinas de nuestros días. Se correlacionan datos etnobotánicos e históricos. Se pone en énfasis el carácter utilitario y dimensión relacional de éstas dos especies de orígenes disímiles en el orden social de los valles de Cusco y Urubamba, donde convergen. Finalmente se desarrolla una aproximación al tratamiento botánico de A. americana L. en razón a que surge la disyuntiva de que correspondería a una especie autóctona denominada Agave cordillerensis Lodé & Pino.
TiO2 NPs-Coated Carbone Nanotubes as a Green and Efficient Catalyst for the Synthesis of [1]Benzopyrano[b][1]benzopyranones and Xanthenols in Water
Authors: Abdolmohammadi Shahrzad
Published: October 2018

Aim and Objective:

Results of pharmacological studies have revealed that chromenes
(2H-1-benzopyran derivatives) and xanthenes (dibenzopyrans) constitute major classes of
heterocyclic compounds, due to their useful biological activities. Moreover, during the last decade,
the use of metal oxide nanoparticles (NPs) as heterogeneous catalysts has been extensively studied
due to their high physical and chemical abilities. The aim of the ongoing research was to prove the
catalytic efficiency of the synthesized TiO2 NPs supported by carbon nanotubes (TiO2-CNTs) for the
preparation of these heterocyclic scaffolds.

Materials and Methods:

The present work is focused on a green and efficient synthesis of
[1]benzopyrano[b][1]benzopyran-6-ones and xanthenols via a pseudo three-component reaction of
salicylaldehydes with active methylene compounds including 4-hydroxycoumarin (4-hydroxy-2H-1-
benzopyran-2-one) or 3,4-methylenedioxyphenol, in a molar ratio of 1:2. The reaction was carried
out in the presence of the synthesized TiO2-CNTs as a catalyst in aqueous media at room
temperature. The synthesized catalyst was fully characterized by the scanning electron microscopy
(SEM), the transmission electron microscopy (TEM), the powder X-ray diffraction (XRD), and the
energy dispersive X-ray detector (EDX) techniques. All the synthesized compounds were
characterized by IR, 1H and 13C NMR spectroscopy, as well as elemental analyses.

Results:

Sixteen target compounds containing [1]benzopyrano[b][1]benzopyran-6-ones and
xanthenols were successfully synthesized in high yields (92-98%) within short reaction times (1.5-3
h).

Conclusion:

In this research, TiO2-CNTs were used as an efficient recyclable catalyst for the
synthesis of [1]benzopyrano[b][1]benzopyran-6-ones and xanthenols by the pseudo three-component
reaction of salicylaldehydes with active methylene compounds including 4-hydroxycoumarin (4-
hydroxy-2H-1-benzopyran-2-one) or 3,4-methylenedioxyphenol. The introduced method is mild,
environmentally benign and effective to give the products in high yields and in short reaction times.
Prevalence of HIV in Patients with Malignancy and of Malignancy in HIV Patients in a Tertiary Care Center from North India
Authors: Sinha Sanjeev , Agarwal Ashish , Gupta Kartik , Mandal Dibyakanti , Jain Mitul , Detels Roger , Nandy Karabi , DeVos Michelle A. , Sharma S.K. , Manoharan N. , Julka P.K. , Rath G.K. , Ambinder Richard F. , Mitsuyasu Ronald T.
Published: October 2018

Background and Objectives:

People living with HIV/AIDS are at an increased risk of developing cancer. The goals of this study were to obtain data on the prevalence of HIV in the cancer population and vice versa at a major tertiary cancer and HIV center in North India.

Methods:

This cross-sectional study was conducted over a 3-year period from July 2013 to June 2016, wherein successive HIV positive patients from an anti-retroviral therapy (ART) center were screened for malignancy. Simultaneously, successive cancer patients at the cancer center were screened for HIV. Baseline demographic details, risk factors, and laboratory investigations were obtained for all the patients.

Results:

Among the 999 HIV-positive patients at the ART center, the prevalence of malignancy was 2% (n=20; 95% confidence interval (CI) 1.13, 2.87). Among the 998 patients with a malignancy, the prevalence of HIV infection was 0.9% (n=9; 95% CI 0.31, 1.49). Weight loss, loss of appetite, and fever were the most common symptoms in patients with HIV and cancer. Among 29 patients with HIV and cancer, AIDS-defining cancer was found in 19 patients; non-Hodgkin’s lymphoma was the most common malignancy reported (n=13).

Interpretation and Conclusion:

There is a low prevalence of HIV in cancer patients as well as a low prevalence of cancer in HIV patients. AIDS-defining cancers remain much more common than non-AIDS-defining cancers. With the increased coverage of ART, it is expected that non-AIDSdefining cancers will increase, as is evident from data from more developed countries.
An Online Support Group Intervention for Adolescents Living with HIV in Nigeria: A Pre-Post Test Study (Preprint)
Authors: Dulli Lisa , Ridgeway Kathleen , Packer Catherine , Plourde Kate F , Mumuni Tolulope , Idaboh Tosin , Olumide Adesola , Ojengbede Oladosu , McCarraher Donna R
Published: October 2018

BACKGROUND

Adolescents living with HIV (ALHIVs) enrolled in HIV treatment services experience greater loss to follow-up and suboptimal adherence than other age groups. HIV-related stigma, disclosure-related issues, lack of social support, and limited HIV knowledge impede adherence to antiretroviral therapy (ART) and retention in HIV services. The 90-90-90 goals for ALHIVs will only be met through strategies targeted to meet their specific needs.

OBJECTIVES

We aimed to evaluate the feasibility of implementing a social media-based intervention to improve HIV knowledge, social support, ART adherence, and retention among ALHIV aged 15-19 years on ART in Nigeria.

METHODS

We conducted a single-group pre-post test study from June 2017 to January 2018. We adapted an existing support group curriculum and delivered it through trained facilitators in 5 support groups by using Facebook groups. This pilot intervention included five 1-week sessions. We conducted structured interviews with participants before and after the intervention, extracted clinical data, and documented intervention implementation and participation. In-depth interviews were conducted with a subset of participants at study completion. Quantitative data from structured interviews and group participation data were summarized descriptively, and qualitative data were coded and summarized.

RESULTS

A total of 41 ALHIV enrolled in the study. At baseline, 93% of participants reported existing phone access; 65% used the internet, and 64% were Facebook users. In addition, 37 participants completed the 5-session intervention, 32 actively posted comments in at least one session online, and at least half commented in each of the 5 sessions. Facilitators delivered most sessions as intended and on-time. Participants were enthusiastic about the intervention. Aspects of the intervention liked most by participants included interacting with other ALHIVs; learning about HIV; and sharing questions, experiences, and fears. The key recommendations were to include larger support groups and encourage more group interaction. Specific recommendations on various intervention components were made to improve the intervention.

CONCLUSIONS

This novel intervention was feasible to implement in a predominantly suburban and rural Nigerian setting. Social media may be leveraged to provide much-needed information and social support on platforms accessible and familiar to many people, even in resource-constrained communities. Our findings have been incorporated into the intervention, and an outcome study is underway.

CLINICALTRIAL

ClinicalTrials.gov NCT03076996; https://clinicaltrials.gov/ct2/show/NCT03076996 (Archived by WebCite at http://www.webcitation.org/73oCCEBBC).
Assessment and Management of Hypertension among Patients on Peritoneal Dialysis
Authors: Vaios Vasilios , Georgianos Panagiotis I. , Liakopoulos Vassilios , Agarwal Rajiv
Published: October 2018

Approximately 7%–10% of patients with ESKD worldwide undergo peritoneal dialysis (PD) as kidney replacement therapy. The continuous nature of this dialytic modality and the absence of acute shifts in pressure and volume parameters is an important differentiation between PD and in-center hemodialysis. However, the burden of hypertension and prognostic association of BP with mortality follow comparable patterns in both modalities. Although management of hypertension uses similar therapeutic principles, long-term preservation of residual diuresis and longevity of peritoneal membrane function require particular attention in the prescription of the appropriate dialysis regimen among those on PD. Dietary sodium restriction, appropriate use of icodextrin, and limited exposure of peritoneal membrane to bioincompatible solutions, as well as adaptation of the PD regimen to the peritoneal transport characteristics, are first-line therapeutic strategies to achieve adequate volume control with a potential long-term benefit on technique survival. Antihypertensive drug therapy is a second-line therapeutic approach, used when BP remains unresponsive to the above volume management strategies. In this article, we review the available evidence on epidemiology, diagnosis, and treatment of hypertension among patients on PD and discuss similarities and differences between PD and in-center hemodialysis. We conclude with a call for randomized trials aiming to elucidate several areas of uncertainty in management of hypertension in the PD population.
Propuesta de un proyecto para disminuir los altos índices de violencia y delincuencia en la provincia de La Romana, República Dominicana
Authors: Ortiz Rodríguez Magnolia
Published: October 2018

El objetivo de esta investigación es hacer un diagnóstico de la violencia y la delincuencia en la provincia de La Romana en el año 2017. Metodología: Es un estudio descriptivo en el cual se utilizan datos secundarios de la Fiscalía de La Romana; datos de informes de trabajos de campo en destacamentos preventivos y se realizan estimaciones sobre el costo de la delincuencia a través del método contable. Se utiliza la observación y análisis. En éste se analiza el nivel de violencia y delincuencia.  Se verifica el porcentaje de presos preventivos y condenados, se calcula la tasa de hacinamiento carcelario y se estima el costo del sistema judicial y penitenciario. Los hallazgos muestran que La Romana tiene un elevado índice de violencia y delincuencia; la tasa de homicidios de 24% por cada 100,000; el robo, una tasa de 110% por 100,000 habitantes. Se revela que solo el 15% de los presos estaban condenados y el 85% eran preventivos. Se encontró hacinamiento crítico en el destacamento del Palacio de Justicia; con una tasa entre 320% y 490%.  Se calculó que el consto en el sistema penal y penitenciario fue de RD$ 763,332,360, equivalente a USD15.902.757.
Editorial
Authors: Ulloa Hung Jorge
Published: October 2018

No precisa de un resumen.
Presentación de la obra Discurso y acción, de Manuel Matos Moquete
Authors: Rincón González María José
Published: October 2018

No precisa de un resumen.
A PRÁTICA DE ENSINO SUPERVISIONADA NOS MESTRADOS DE FORMAÇÃO DE EDUCADORES/AS E PROFESSORES/AS EM PORTUGAL: VOZES DAS COORDENADORAS
Authors: Tomás Catarina , Gonçalves Carolina
Published: October 2018

A investigação sobre formação de professores/as e educadores/as tem sido profícua e plural.Não obstante, pouco se sabe sobre o que coordenadores/as ou diretores/as de curso sentem e refletemacerca da Prática de Ensino Supervisionada (PES). O estudo exploratório que apresentamos nopresente artigo, a partir da interlocução entre a Sociologia e as Ciências da Educação, teve comoprincipal objetivo identificar e analisar a opinião de 13 coordenadoras sobre os mestrados de formaçãode educadores/as e professores/as do 1.º e 2.º Ciclo do Ensino Básico em Portugal - o lugar, a função eo perfil dos supervisores/as, a avaliação do processo de supervisão, bem como o modelo supervisivoadotado, os pontos fortes e fracos identificados no atual modelo da PES, propostas de alteração aomodelo existente e o grau de satisfação das coordenadoras com a PES. O desenho da pesquisamobilizou procedimento de recolha de dados assente numa metodologia qualitativa, a partir daaplicação de um questionário e consequente análise e interpretação analítica. Como principaisresultados, verificamos, globalmente, a ausência de um modelo de supervisão institucionalizado, aindaque a PES assuma, nos discursos, um lugar central na formação docente.
PESQUISADORAS NEGRAS NA DOCÊNCIA DO ENSINO SUPERIOR: UMA ANÁLISE A PARTIR DA PERSPECTIVA (AUTO)BIOGRÁFICA
Authors: Miranda Claudia
Published: October 2018

As estratégias de sujeitas negras, que se profissionalizam, com vistas a alcançar deslocamento de seu status sócio educacional, são problematizadas a partir de uma análise (auto)biográfica. Como parte das alternativas de construção do conhecimento arrisco-me a sugerir, como uma contribuição transgressora, alguns atalhos experimentados no percurso de estudante universitária, pesquisadora e professora do ensino superior. Apresento interseções e contornos investigativos sobre a formação acadêmica tomando como objeto uma travessia insurgente em instituições públicas. O ponto de partida é uma análise onde a presença negra e feminina na docência do ensino superior ganha relevo. Sob tal perspectiva, arrisco-me a sugerir, como uma contribuição transgressora, alguns descaminhos experimentados no percurso que fiz como professora e pesquisadora negra.
AÇÃO COMUNICATIVA EM HABERMAS E PESQUISA-AÇÃO: DIÁLOGOS PARA FORMAÇÃO NA UNIVERSIDADE
Authors: Carla do Nascimento Givigi Rosana , Nascimento de Alcântara Juliana , Lúcia de Oliveira Ralin Vera
Published: October 2018

O presente trabalho aborda a universidade enquanto espaço formativo. Tem por objetivo discutir a formação fomentada num grupo de pesquisa a partir do diálogo entre os preceitos da Teoria da Ação Comunicativa de Habermas e da Pesquisa-Ação crítico-colaborativa. Para tanto, as análises partiram do trabalho do XXX da Universidade Federal de Sergipe, que conta com 20 integrantes, desde alunos de iniciação cientifica até alunos de pós-graduação. A formação nesse grupo ocorre segundo o tripé: supervisões, grupos de estudos e trabalho em campo. Como resultados, apontam-se algumas estratégias formativas, tais como a garantia de acesso ao discurso teórico-epistemológico; a necessidade de efetiva participação em grupos de pesquisa e atividades de extensão; o acompanhamento assistido em atividades práticas; o enaltecimento da práxis, com articulações profícuas entre ações e sua deliberada relação com os aspectos teóricos imanentes.
The effect of sintering temperatures of TiO2(B)-nanotubes on its microstructure
Authors: Sutrisno H. , Siswani E.D. , Budiasih K.S.
Published: October 2018

Titanium dioxide (TiO2)-nanotubes were prepared by a simple technique reflux.
The morphologies and microstructures of nanotubes were characterized by high
resolution scanning electron microscopy (HRSEM), high resolution
transmission electron microscopy (TEM), powder X-ray diffraction (XRD,)
energy dispersive X-ray spectroscopy (EDS) and surface area analyzer. The
microstructures of TiO2 phases obtained from the sintering process of
TiO2-nanotubes for 1 hour at various temperatures from 100 to 1000?C at
intervals of 50?C were investigated from the XRD diffractograms. The
analyses of morphologies and microstructures from HRSEM and HRTEM images
describe the sample as nanotubes. The nanotube is single phase exhibiting
TiO2(B) structure. The XRD patterns show that TiO2(B)-nanotubes transform
into anatase phase and then become rutile due to increasing sintering
temperatures.
Comparative study of conventionally sintered Co-Ni-Al alloy with spark plasma sintered alloy
Authors: Johnsy Arputhavalli , Agilan S. , Dinesh M. , Vijay S.J. , Johnson Roy
Published: October 2018

Co-Ni-Al alloy samples were prepared by compacting the powdered alloy at
various pressures in proper stoichiometric ratio and the high density
compacted alloy was sintered at 673 K. The magnetic, mechanical properties,
microstructure and phase analysis were studied and compared with that of
spark plasma sintered (SPS) alloy. The sintered alloy exhibit martensitic
twin variants with ? phase structure. Along with the diffused particle, few
agglomerated clusters were observed on the topographic images. The magnetic
and the mechanical studies of the test specimens were investigated using the
vibrating sample magnetometer, pin on disk tribometer and universal testing
machine respectively. The coercivity value and the ductility of the SPS
alloy are higher than the same of the as-sintered alloy.
Robert Rosen’s relationalist understanding of biological states and quantum mechanics
Authors: Perovic Slobodan
Published: October 2018

Robert Rosen?s intriguing ideas of a formalized framework to understand
biological systems have been discussed across the life and cognitive
sciences. Yet his crude account of physical states, quantum states in
particular, seems to be irreconcilable with his account of biological
states, thus preventing a pursuit of his framework as a general ontological
account. A more subtle understanding of quantum states, however, leaves room
for a relationalist understanding of physical states in general agreement
with Rosen?s framework of biological states.
Metaphysical character of metaontological disputes
Authors: Rakonjac Stevan
Published: October 2018

This paper will, to a large extent, be concerned with the meatontological
position of David Chalmers. Chapters 1, 2, and 4 will respectively present
Chalmers? terminology, his argument based on a thought experiment and his
classification of metaontological positions. In chapter 3 attempt will be
made to show that there are some unjustified steps in Chalmers?
argumentation, because the conclusion that egzistential ontological claims
are not supstantive is built into the definitions of the terms he uses.
Chapter 5 will present some of Chalmers? arguments against ontological
realism, and it will be shown that they are not successful, or only partialy
successful. In chapter 6 attempt will be made to show that opposed
metaphysical claims lie at the heart of the disputes between opposed
metaontological positions, at least as they are presented by Chalmers. The
main purpose of this paper will be to explicate the role of some
metaphysical assupmtions in metaontological analysis of David Chalmers.
The problem of naturalism and causal explanation in the interpretations of Nietzsche’s philosophy
Authors: Agatonovic Milos
Published: October 2018

In this paper we are going to discuss the two forms of naturalism that are
attributed to Nietzsche, that are shown to be the most important in the
recent interpretations of his philosophy: the methodological naturalism in
Brian Leiter?s formulation and the naturalism in the broad sense in the
interpretation of Christopher Janaway. This paper suggests an interpretation
of Nietzsche?s genealogy that leans toward the naturalism in the broad sense,
and attempts to show that the result of genealogical research should be the
causal explanation which uses the everyday-concept of causality and the
organicistic conception of part-whole relation. The suggested interpretation
of Nietzsche?s genealogy will result with the explanation of his concept of
life according to which that concept refers to any whole, natural or social,
as a specific causal domain of will to power.
Investor Sentiment for Corporate Social Performance
Authors: Naughton James P. , Wang Clare , Yeung Ira
Published: October 2018

We document time-varying investor sentiment for corporate social responsibility (CSR) performance. We show that announcements of CSR activities generate positive abnormal returns during periods when investors place a valuation premium on CSR performance. In addition, we find that firms boost CSR performance in response to investor sentiment, and that this response is more pronounced for those firms that are more inclined to respond to investor sentiment due to valuation uncertainty and investor horizon. Our results suggest that investor sentiment plays a role in firms' commitment to CSR.

JEL Classifications: M41; D82; G14; G30; G31; G32; G34.

Data Availability: Data are available from the public sources cited in the text.
MATHEMATICAL MODELING OF THE INFLUENCE OF EXTERNAL FACTORS ON CHARACTERISTICS OF CABLE LINE
Authors: Tutarinov Alexandr Sergeevich , Romanenko Nickolai Gennadievich
Published: October 2018

Electric power is a branch of the power industry, which includes the production, transmission and sale of electricity. Electric power is the most important branch of the power industry, which is explained by such advantages of electricity over the other types of energy as the relative ease of transmission over long distances. Activity of "IDGC of the South - Astrakhanenergo", PJCS is organized to supply electricity to the consumer. One of the important factors of electricity supply is timely testing and inspecting the cable. The subject of research are cable lines. There have been considered different types of cables (designation, specifications) that are put into operation in four districts in Astrakhan. The statistics data obtained during 2001-2017 demonstrate the change in insulation resistance over the time. There has been found the influence of the environment and ground characteristics on soundness of the cable line insulation. Assessment of the impact of soil parameters on the cable line in the Sovetsky district in Astrakhan has been carried out. When modelling dependence of insulation from external factors there were studied models of two types: linear and logarithmic. It has been stated that the logarithmic model is more suitable for mathematical modelling due to its adequate evaluation of dependence of resistance on the ground characteristics. Mathematical calculations done and the choice of logarithmic models helped to propose a method of predicting the continuous working time of the cable line without involvement of electrical personnel in testing and visual inspection, which in future will significantly reduce the number of emergency situations in the facilities and save the budget.
PREDICTION MODELS FOR ELECTRICITY CONSUMPTION UNDER INFLUENCE OF METEOFACTORS
Authors: Tokareva Guzel' Raisovna , Sanzhapov Rastyam Raisovich , Savenkov Maxim Vladimirovich , Ilyin Dmitry Aleksandrovich
Published: October 2018

The purpose of the study is to assess the effect of meteorological factors on electricity consumption. The object of the study is the power system of the Astrakhan region. As the initial data, a sample was compiled of the data of 12 months of 2015 and 2016. One of the main indicators in planning the work of the energy association and the energy system is the magnitude of the forecasts of the expected power consumption (electricity and power consumption) as a whole for the system, groups and individual consumers, the nodes of the electrical scheme. The magnitude of the forecast of power consumption is a reference indicator for the subsequent planning of energy balances, power and calculation of electrical regimes. The need for accurate forecasting is due to technological and economic reasons. Accurate calculations to ensure the optimal distribution of the load between stations, from an economic point of view, facilitate sales of economically viable operations for the purchase and sale of electricity. There has been given analysis of energy consumption depending on temperature changes and the amount of precipitation during the accounting period. Calculations are made for the deviations of each indicator. The graphs of the dependences of power consumption on the amount of precipitation and temperature are plotted. For these dependencies, polynomial equations are compiled. For a constant relationship between power consumption and the temperature of the calculated correlation coefficients. The correlation coefficient makes it possible to determine how proportional the variability of the two variables is. Taking into account the set of meteorological factors makes it possible to increase the effectiveness of the predicted changes in the energy sector.
Estética de la indiscernibilidad. El trastorno de la mímesis
Authors: Dipaola Esteban
Published: October 2018

El artículo propone interrogar el problema de la disoluciónde la representación en el arte contemporáneo proponiendola condición de la indiscernibilidad para definir una nuevadimensión estética del presente. Con sustento en la filosofíade Arthur Danto y de Gilles Deleuze, se indaga acerca delproblema de los objetos indiscernibles y con esto se identificancaracterísticas necesarias para definir las estéticas de laindiscernibilidad del arte contemporáneo, entendido comoun trastorno de la mímesis.
Cruces en la idea de la representación
Authors: Unzué Martín
Published: October 2018

El texto plantea la pregunta por el modo en que se construyela idea de la representación política moderna, partiendodel análisis del proceso histórico por el cual la misma vatomando forma en los inicios del período independentistaen el Río de la Plata. De ese modo, se señalan las formas enque la figura del representante se autonomiza de la fuenteoriginal de la soberanía, identificada con el pueblo. En esamutación, los sectores populares quedarán reducidos a unnuevo rol de menor trascendencia: como el de peticionantes.
El sonido, ¿resiste? La música como símbolo de resistencia
Authors: Martínez Castillo Rubén
Published: October 2018

El objetivo de este escrito es realizar una reseña del librode Esteban Buch titulado Música, dictadura, resistencia.La Orquesta de París en Buenos Aires. Ahondaremos enla búsqueda de herramientas de análisis que realiza elautor para interpretar, desde una perspectiva histórica,un acontecimiento musical y su percepción. A partir de losestudios de caso del libro, se desplegarán los principalesaportes que realiza Buch sobre la interpretación de unaobra musical como signo de resistencia frente a un podersistematizado.
Fue lo que empezó una vez, lo que después dejó de ser. Promoción musical y dependencia cultural en Latinoamérica
Authors: Cannova María Paula
Published: October 2018

En Latinoamérica, la promoción musical organizada y/o institucionalizada señaló,desde el siglo XIX, a la dependencia cultural como un problema a resolver,aunque modificando el centro metropolitano identificado como dominador. Demanera paralela, dichas asociaciones se caracterizaron por la discontinuidad desus tareas, dificultad relativa al problema anterior. A los fines de luchar contra elretraso de los músicos locales, el asociacionismo y las fundaciones organizaronfestivales, conciertos, conferencias y cursos de formación superior sobremúsica. Sus acciones se entretejieron con políticas y con diplomacias culturalesinternacionales que, en torno a la música, operan bajo diferentes modelossociales. Este trabajo analiza las constantes de las asociaciones promotoras demúsica en Latinoamérica.
Notas sobre la recepción de Worringer en Latinoamérica
Authors: Fernández Harari Inés
Published: October 2018

El presente trabajo se propone explorar la recepción de Wilhelm Worringer enLatinoamérica durante los años cincuenta a partir de los escritos sobre arte deMarta Traba y Romualdo Brughetti. Veremos cómo, a pesar de diferir en susposiciones respecto de la modernidad artística y el nacionalismo, ambos autoresrecurrieron a la obra del historiador del arte alemán en busca de categoríascapaces de sustentar sus ideas. A través de estas apropiaciones estratégicas,el pensamiento worringeriano se vio reactualizado en un contexto de intensosdebates acerca del lugar del arte latinoamericano en el escenario internacional.