bluuebunny/crossref_metadata_2025 huggingface dataset:
Intelligent Tool To Design Drilling, Spacer, Cement Slurry, and Fracturing Fluids by Use of Machine-Learning Algorithms
Authors: Shadravan Arash , Tarrahi Mohammadali , Amani Mahmood
Published: March 2017

Design of drilling fluids, spacers, cement slurries, and fracturing fluids is often done by trial and error in the laboratory. In the first step, the required properties of these fluids are categorized and then efforts will be started with a rough idea of the optimal composition. This first guess usually depends on the experience of the laboratory analyst or fluid engineer. Afterward, the trial-and-error testing starts, and it continues until the fluid design moves closer to the desired fluid criteria. There are several test data that would not be used in this method, and it is difficult to digest a large amount of information by the user. Trial and error could be time-consuming, very costly, and misleading. Today, there is a need for an intelligent system that uses all the available data (big data), even if the data sets are not close to the desired goal, and offers insights for fluid designs.

This paper conducted a study on the application of machine-learning-based methodologies, including Gaussian-process regression (GPR) and artificial neural networks (ANNs), to reduce the costs of testing, integrate available experimental data, and eliminate the need for personnel supervision. These practical nonlinear-regression methods empower efficient and fast prediction tools that do not require including complex physics of the underlying system while integrating all available data from different sources. GPR, which is also known as Kriging in geostatistics literature, has exceptional advantages over traditional regression methods because it does not require a known form for regression function and also has the capability of determining the estimation error and the confidence interval. This machine-learning-based tool offers insights for intelligent fluid design and could reduce costs.
Supranumerários bilaterais em mandíbula: relato de caso
Authors: Teslenco Vítor Bruno , Gaetti-Jardim Ellen Cristina , Leite da Silva Júlio César
Published: March 2017

O aparecimento de dentes supranumerários na arcada dentária é denominado hiperdontia. Tal patologia ainda não apresenta etiologia definida e seu diagnóstico é feito, geralmente, por exames de rotina. Sua prevalência é maior em região de maxila (pré-maxila), sendo os homens mais afetados em uma proporção de 2:1. O propósito do presente trabalho foi relatar caso clínico com tratamento da patologia por meio de exérese do elemento supranumerário, a fim de manter a integridade das estruturas adjacentes ao elemento. Paciente de 23 anos, do sexo feminino, procurou às clínicas da Faculdade de Odontologia (FAODO) da Universidade Federal de Mato Grosso do Sul para avaliação e conduta de sua patologia. A cirurgia dos supranumerários foi realizada em duas etapas, sendo a primeira no dia 07/12/2015 e a segunda 01/02/2016. Concluiu-se que se faz necessária a realização de exames radiográficos de rotina para se controlar a presença destas anomalias. Se bem planejado e indicado pelo profissional, o tratamento cirúrgico se mostra eficiente para a resolução dos casos.Descritores: Dente Impactado; Dente Supranumerário; Cirurgia Bucal.
THE USER OF ADSORPTION FOR PURIFICATION OF WASTEWATER FROM THE PRODUCTION OF PHENOL-FORMALDEHYDE RESINS
Authors: Timoshchuk Irina , Timoshchuk Irina
Published: March 2017

To increase ecological safety of phenol-formaldehyde resins production of the novolac type, the adsorption technology for purification of wastewater containing mainly phenol and formaldehyde was developed. The research of organic substances adsorption (formaldehyde, phenol) from individual aqueous solutions and their mixtures on carbon sorbents grades AG-3, AG-OV-1, SKD-515, BAU, ABG, XAU was conducted, this grades differ in composition, method of producing, structure, and chemical state of the surface. The basic laws, characteristics and mechanism of adsorption of organic substances on activated carbon (AU) were established. The mechanism of mass transfer during adsorption of a mixture of phenol and formaldehyde on the investigated sorbents was showed, and the external mass transfer coefficients were calculated. There was proposed the method of optimization of parameters and continuous adsorption treatment process modes, based on the fundamental external diffusion dynamics adsorption formula using the adsorption constants of the Dubinin-Radushkevich’s equation and kinetic dependencies. The main features of the adsorption dynamics were established, which allowed to determine the duration of column operation, the amount of feed water depending on the throughput rate, the height of the fixed bed and size of the column. According to the results of experimental studies and derivatographic analysis we developed the technology of carbon sorbents regeneration after adsorption of formaldehyde and phenol mixture, which allowed to restore the AC (activated carbon) sorption capacity to 95-98%. On the basis of aggregate balance studies, kinetics and dynamics of adsorption process, optimization of the cleaning regime and the parameters of adsorption column using mathematical modeling, we recommend the technological solution for waste water purification from phenol and formaldehyde, which are formed in the process of phenol-formaldehyde resins of the novolac type production.
THE RESIDUE THEOREM AND AN ANALOG OF P. APPELL’S FORMULA FOR FINITE RIEMANN SURFACES
Authors: Chueshev Viktor , Chueshev Viktor , Chueshev Aleksandr , Chueshev Aleksandr
Published: March 2017

A theory of multiplicative functions and Prym differentials for the case of special characters on compact Riemann surfaces has found applications in geometrical function theory of complex variable, analytical number theory and in equations of mathematical physics. Theory of functions on compact Riemann surfaces differs from the theory of functions on finite Riemann surfaces even for the class of single meromorphic functions and Abelian differentials. In this article we continue the construction of the general function theory on finite Riemann surfaces for multiplicative meromorphic functions and differentials. We have proved analogues of the theorem on the full sum of residues for Prym differentials of every integral order and P. Appell's formula on expansion of the multiplicative function with poles of arbitrary multiplicity in the sum of elementary Prym integrals.
THE STUDY OF NATURAL POLYSACCHARIDES: ORGANOLEPTIC, PHYSICAL, CHEMICAL, MICROBIOLOGICAL PROPERTIES, AND THERMODYNAMIC CHARACTERISTICS OF AQUEOUS SOLUTIONS
Authors: Belova Dar’ya , Belova Dar’ya , Dyshlyuk Lyubov , Dyshlyuk Lyubov
Published: March 2017

Natural polysaccharides is a promising raw material for biodegradable polymers production. To properly select sources of their origin would require conformity with safety standards in force for the similar products. This work conducts a study with a view to examine the extent to which the organoleptic, physical and chemical properties of the polysaccharides in question, as well as their safety indicators conform with the provisions of GOST 16280-2002, CAS 11114-20-8 and CAS 9004-65-3. It is determined that the samples selected, namely, agar-agar produced by Panreac (Germany) and Helicon (USA), carrageenan produced by Boc Sciences (USA) and Newgreen Pharmchem Co. (China) and hydroxypropylmethyl cellulose produced by Acros (Belgium) and Ashland Aqualon Functional Ingredients (USA), meet safety requirements for this type of raw material. Simultaneously, we employ high-sensitivity differential scanning calorimetry method to analyze thermodynamic characteristics of natural polysaccharides’ aqueous solutions. It is shown that gels based on agar-agar have high melting temperature and can withstand temperature rise; after, their microscopic structure is not affected by thermal history, and the gel system remains stable. Thermodynamically, aqueous solution of kappa-carrageenan forms more stable gel than iota-carrageenan; strength and melting point of kappa-carrageenan gels can be adjusted by changing the concentration of potassium chloride in the solution. Aqueous solutions of hydroxypropylmethylcellulose are thermodynamically stable. The experimental data obtained confirm the feasibility of natural polysaccharides application in the production of biodegradable polymers.
RESIDENTS OF INDUSTRIAL REGIONS: LONG TERM DYNAMICS OF SPONTANEOUS MUTAGENESIS
Authors: Chshieva Fatima , Chshieva Fatima
Published: March 2017

The studies shows results of the 10-years research related to the frequency of chromosome aberrations in peripheral blood lymphocytes of North Ossetia inhabitants. The study of cytogenetic indexes in the blood of healthy individuals showed an increase in the average frequency of chromosome aberrations as time passed. The long-term cytogenetic study of North Ossetia residents’ blood showed the growth of medium frequency of aberrant metaphases from 2.07 ± 0.37 to 3.04 ± 0.16 in the group of adults and from 0.5 ± 0.25 to 1.9 ± 0.2 in the groups of children. The most significant increase among all studied cytogenetic indexes in groups of North Ossetia adults and children was in 2009 due to accidental release at one of the metallurgical enterprises in the capital city. All studied groups were characterized by prevailed acentric fragments among chromosome disorders, with an increase of all types of aberrations as time passed. There was a growth in the proportion of chromosome aberrations (adults had an increase of double fragments from 0.20 ± 0.11 to 0.60 ± 0.15 and chromosome exchanges from 0.27 ± 0.15 to 0.64 ± 0.13, children: from 0.13 ± 0.13 to 0.26 ± 0.12 and from 0 to 0.26 ± 0.20 respectively). Sex and smoking factors had no significant effect on the studied samples during the observation period. The 10-year (2002-2011) dynamics analysis of cytogenetic disorders has shown an intensification of mutagenic effects on residents of the republic, which were the most severe after accidental releases in 2009. The results of cytogenetic studies suggest that a mutagenic impact of chemical and radioactive nature takes place.
Hydrological model parameterization using NDVI values to account for the effects of land cover change on the rainfall–runoff response
Authors: Nourani Vahid , Fard Ahmad Fakheri , Gupta Hoshin V. , Goodrich David C. , Niazi Faegheh
Published: March 2017

Classic rainfall–runoff models usually use historical data to estimate model parameters and mean values of parameters are considered for predictions. However, due to climate changes and human effects, model parameters change temporally. To overcome this problem, normalized difference vegetation index (NDVI) derived from remotely sensed data was used in this study to investigate the effect of land cover variations on hydrological response of watersheds using a conceptual rainfall–runoff model. The study area consists of two sub-watersheds (Hervi and Lighvan) with varied land cover conditions. Obtained results show that the one-parameter model generates runoff forecasts with acceptable level of the considered criteria. Remote sensing data were employed to relate land cover properties of the watershed to the model parameter. While a power form of the regression equation could be best fitted to the parameter values using available images of Hervi sub-watershed, for the Lighvan sub-watershed the fitted equation shows somewhat lower correlation due to higher fluctuations of the model parameter. The average values of the Nash–Sutcliffe efficiency criterion of the model were obtained as 0.87 and 0.55, respectively, for Hervi and Lighvan sub-watersheds. Applying this methodology, the model's parameters might be determined using temporal NDVI values.
Fate of selected pharmaceutically active compounds in the integrated fixed film activated sludge process
Authors: Murray K. J. , Parker W. J. , Bragg L. M. , Servos M. R.
Published: March 2017

The potential for integrated fixed film activated sludge (IFAS) processes to achieve enhanced transformation of pharmaceuticals relative to conventional activated sludge (CAS) processes was assessed. Previous studies have focused on direct comparisons of parallel reactors with and without fixed film carriers and little information is available on the impacts of how varying operating parameters impact the differences in observed pharmaceutical compound (PC) transformation capabilities between CAS reactors and those equipped with both an activated sludge (AS) and fixed film carriers. The testing was carried out using bench scale sequencing batch reactors fed with authentic municipal wastewater and operated at selected combinations of temperature and solids retention time (SRT). PC transformation efficiencies were assessed in a 22 factorial design that employed the IFAS and CAS processes, operated in parallel under identical process conditions. Nitrification rate testing that was conducted to obtain insight into the biomass activity demonstrated that IFAS consistently had improved nitrification kinetics despite lower mixed liquor volatile suspended solids levels thereby demonstrating the contribution of the biofilm to nitrification. Increased transformation of atenolol (ATEN; ranging from 10–60%) and trimethoprim (TRIM; ranging from 30–50%) in the IFAS equipped reactors relative to their respective activated sludge (AS) controls was observed under all experimental conditions. Negligible transformation of carbamazepine was observed in both reactors under all conditions investigated. More than 99% of acetaminophen was transformed in both configurations under all conditions. There was no correspondence between nitrification activity and TRIM removal in the control AS while conditions that stimulated nitrification in the control AS also resulted in enhanced removal of ATEN. The results of this study indicate that the integration of biofilms in AS processes enhances transformation of some PCs.
Controlling the COD removal of an A-stage pilot study with instrumentation and automatic process control
Authors: Miller Mark W. , Elliott Matt , DeArmond Jon , Kinyua Maureen , Wett Bernhard , Murthy Sudhir , Bott Charles B.
Published: March 2017

The pursuit of fully autotrophic nitrogen removal via the anaerobic ammonium oxidation (anammox) pathway has led to an increased interest in carbon removal technologies, particularly the A-stage of the adsorption/bio-oxidation (A/B) process. The high-rate operation of the A-stage and lack of automatic process control often results in wide variations of chemical oxygen demand (COD) removal that can ultimately impact nitrogen removal in the downstream B-stage process. This study evaluated the use dissolved oxygen (DO) and mixed liquor suspended solids (MLSS) based automatic control strategies through the use of in situ on-line sensors in the A-stage of an A/B pilot study. The objective of using these control strategies was to reduce the variability of COD removal by the A-stage and thus the variability of the effluent C/N. The use of cascade DO control in the A-stage did not impact COD removal at the conditions tested in this study, likely because the bulk DO concentration (>0.5 mg/L) was maintained above the half saturation coefficient of heterotrophic organisms for DO. MLSS-based solids retention time (SRT) control, where MLSS was used as a surrogate for SRT, did not significantly reduce the effluent C/N variability but it was able to reduce COD removal variation in the A-stage by 90%.
Study on method and mechanism of deep well circulation for the growth control of Microcystis in aquaculture pond
Authors: Cong Haibing , Sun Feng , Wu Jun , Zhou Yue , Yan Qi , Ren Ao , Xu Hu
Published: March 2017

In order to control the growth of Microcystis in aquaculture ponds and reduce its adverse effect on water quality and aquaculture, a production-scale experiment of deep well circulation treatment was carried out in an aquaculture pond with water surface area of 63,000 m2 and water depth of 1.6–2.0 m. Compared with the control pond, the experiment pond had better water quality as indicated by 64.2% reduction in chlorophyll a, and 81.1% reduction in algal cells. The chemical oxygen demand, total nitrogen, and total phosphorus concentration were reduced by 55.1%, 57.5%, and 50.8%, respectively. The treatment efficiency is mainly due to the growth control of Microcystis (i.e. cell reduction of 96.4%). The gas vesicles collapsing because of the water pressure was suggested to be the mechanism for Microcystis suppression by the deep well circulation treatment. The Microcystis lost its buoyancy after gas vesicles collapsed and it settled to the bottom of the aquaculture pond. As a result, the algae reproduction was suppressed because algae could only grow in the area with enough sunlight (i.e. water depth less than 1 m).
The solution of the hydrodynamic submodels of rank 2 with rotation
Authors: Yulmukhametova Yu.V.
Published: March 2017

Found all solutions invariant submodel of grade 2 evolution type for the polytropic gas with the assumption of a linear dependence of the radial component of the velocity from the spatial coordinates.
AS REPRESENTAÇÕES DOS SENTIDOS E SIGNIFICADOS ATRIBUÍDOS AO TRABALHO DOCENTE NA PERSPECTIVA DE GÊNERO
Authors: Dias Alfrancio Ferreira , Cruz Maria Helena Santana
Published: March 2017

Este artigo aborda as representações de gênero no campo da educação, destacando as experiências de socialização do trabalho docente a partir das trajetórias escolares, familiares e profissionais, o sentido e significado do trabalho na perspectiva dos/as docentes e o trabalho como uma categoria central e imaterial na vida dos/as docentes. A metodologia utilizada neste trabalho apoia-se em análises de fontes bibliográficas e em resultados de pesquisas de campo com diferentes dimensões metodológicas. Infere-se que os/as docentes vivenciam as mudanças das relações no interior do trabalho e na família, atribuindo sentidos ao trabalho que realizam a partir de suas identificações como professores/as e homens/mulheres, construídas no decorrer de suas trajetórias.
Historical water supply to The Monastery of El Paular: a “qanat” in the Guadarrama mountain range (Madrid, Spain)
Authors: López Vera Fernando , López-Camacho Bernardo
Published: March 2017

The "qanat" is an ingenious system of collecting and conducting groundwater to a supply point. Its origin dates back to 3,000 years ago in the area known today as Armenia, and it had spread widely throughout Persia by 600 BC. The expansion of Islam spread this technique from China to the Iberian Peninsula, where it has received various local names. In Madrid, the technique was widely used for water supply from the ninth century until the mid-twentieth century, and in recent centuries received the name "Viajes de agua".
However, the geological and socio-economic environment of the Sierra de Guadarrama in Madrid is not, and has never been, appropriate for the implementation of this type of water catchment. This is why the qanat supply of the former Charterhouse of Santa María de El Paular (Rascafría), which shows a very similar typology to the "Viajes de agua" modified or constructed in Madrid between the 17th and 19th centuries, is so original. Three "capirotes" (hoods) and a "distribution ark" have been located "in situ" in the vicinity of the Monastery and another "capirote" is used as an ornamental element in the courtyard of the old Hotel El Paular.
In this paper, we present the results obtained in the field study and files on this "Viaje de agua", its context within the old Monastery supply, its water quality, and various hydrological and hydraulic considerations. Its builders must have been "plumbers" from Madrid in the seventeenth century, and it underwent several modifications during the eighteenth century.
MODELO AHP PARA SELECCIONAR PROVEEDORES DE CLOUD COMPUTING
Authors: Huamaní Huamaní Gloria Teresita
Published: March 2017

En este documento se describe la aplicación del Proceso Analítico Jerárquico (PAJ), y luego se identifica los servicios de los proveedores de computación en la nube. La primera actividad en la toma de decisiones multicriterio es establecer los factores que son importantes para esa decisión. Así se ha determinado como criterios en la selección de proveedores de cloud computing: escalabilidad, accesibilidad, rendimiento, y seguridad. El modelo SEPROCCAHP v01, ha sido aplicado por tres grupos de alumnos del curso de logística empresarial. Dos grupos de alumnos han seleccionado Google, y un tercer grupo a Microsoft. Los resultados difieren, porque depende de los juicios de valor emitidos en la evaluación de pares de criterios y las alternativas a seleccionar. Palabras clave.- Seleccionar proveedores, Proceso analítico jerárquico, Computación en la nube.. ABSTRACTIn this paper the application of the Analytic Hierarchy Process (AHP) is described, and then the service providers cloud computing is identified. The first activity in multicriteria decision- making is to establish the factors that are important to that decision. This has been determined as criteria in selecting cloud providers: accessibility scalability, performance, security. The SEPROCCAHP v01 model has been applied for three groups of students in the course of business logistics. Two groups of students have selected Google, and a third group at Microsoft. The results differ because it depends on value judgments issued in the peer evaluation criteria and alternatives to select. Keywords.- Select suppliers, Analytic hierarchy process, Cloud computing.
ANALISIS DE CALIDAD DE SERVICIO EN REDES IPv6
Authors: Tavara Carbajal Jose Carlos
Published: March 2017

RESUMENEste documento tiene como objetivo analizar el comportamiento de la calidad del servicio del protocolo IPv6 sobre el tráfico de video, para esto se realizó sobre un entorno real y se llevó acabo el análisis de resultados a través de un software estadístico de control del tráfico.Palabras Clave.-  Calidad de Servicio, Ancho de Banda, Retardo, Fluctuación de Retardo, Pérdidas de Paquetes.ABSTRACTThis paper has aimed to analyze of the service quality of the IPv6 protocol on video traffic, this was about a real environment and was conducted analysis of results through statistical traffic control software. Keywords- Quality of Service, Bandwidth, End to end delay, Jitter, Packet loss.
Optimización de un magnetómetro de muestra vibrante para un curso de física de laboratorio
Authors: Avilés-Felix Luis , Monteblanco Elmer Nahuel , Gutarra Abel
Published: March 2017

Este artículo describe la implementación y una optimización detallada de un magnetómetro de muestra vibrante (VSM) para un laboratorio de licenciatura en física. Los parámetros de operación de VSM se discutieron ampliamente usando la configuración de bobinas de Foner y Mallison. Se discutió la influencia de los parámetros implicados (por ejemplo, frecuencia de oscilación, amplitud de oscilación, cambio de velocidad del campo magnético externo, configuración de bobinas, etc.) sobre la tensión inducida en las bobinas de captación. Se utilizó un disco de níquel de 6 mm de diámetro para la calibración del magnetómetro, comparando el bucle de histéresis medido con nuestro magnetómetro con el obtenido utilizando un VSM comercial. Se obtuvieron curvas de magnetización de dos muestras diferentes para probar la sensibilidad del magnetómetro. El magnetómetro de muestra vibrante implementado en el presente trabajo es capaz de detectar cambios en el momento magnético total hasta 10-3 emu. La optimización detallada del VSM descrita en el presente trabajo es un ejemplo de cómo resolver un problema real en materia condensada, relacionado con la determinación del valor de magnetización de una muestra magnética.
Does the Forty Year’s Success Myth of the Korea Shipbuilding Industry Come to an End?
Authors: Jeong Hong-Yul
Published: March 2017

Shipbuilding industry, having a great ripple effect on national economy, has been fostered by some countries as the national key industries. Korea also has supported shipbuilding industry as one of the industries politically fostered by the state. Accordingly, the shipbuilding industry of Korea has started to developed since 1970’s, reaching the world’s top position in 2000’s with reference to all the relevant indices.

However, after the global financial crisis in 2008, the shipbuilding industries of Korea focused on offshore plants, resulting in huge deficit and being outranked by China.

In this article, the past growing procedure of Korea’s shipbuilding industry was briefly reviewed, and the future plans for regaining the past glories as the shipbuilding power were sought.
Analisis Kadar Unsur Nitrogen (N) Dan Posforus (P) Dalam Lamun (Enhalus acoroides) Di Wilayah Perairan Pesisir Kabonga Besar Kecamatan Banawa Kabupaten Donggala
Authors: Ramadhan Sofyan , Tiwow Vanny M. A. , Said Irwan
Published: March 2017

The caring of community and local government toward sustainability of seagrass ecosystem has not built properly as well as toward the ecosystem of coral reef and mangrove, as a result, this plant needs attention for its sustainability. One of sea grass’s species which is avalaible abundantly in Banawa district Donggala regency, is enhalus acoroides type. This research aims to know the level of nitrogen dan phosphorus in enhalus acoroides which grow in the bay of Kabonga besar, Banawa district Donggala regency. Determination of nitrogen level used kjeldhal method which consisted of destruction, destilation, titration and phosphorus used wet ash method which continued to use the UV-Vis spectrometry. The result showed that the level of nitrogen in sea grass (enhalus acoroides) type was 1.89 in percentage and phosphorus was 0.413 in percentage.
Uji Aktivitas Ektrak Daun Palado (Agave angustifolia) Sebagai Antioksidan
Authors: Nur Kurniati , Diah Anang Wahid M. , Nuryanti Siti
Published: March 2017

Study on the antioxidant activity test has been conducted using palado (agave angustifolia) leaves from Tondo, Central Sulawesi. Palado plant is one of the succulent plants that can grow to a large size, and it is possible to contain antioxidant compounds. This study was conducted by an experimental method using maceration extraction technique and 1,1-difenil-2-picrylhydrazyl (DPPH) as the free radicals source, and vitamin C as the positive control, whereas UV-Vis spectrophotometer as for determining wavelength (λ) of palado leaves extracts. Sample used as much as 5 grams palado leaves, and methanol as the solvent. Variation concentrations of palado leaves extract were 20, 40, 60, 80, 100, 120, and 140 ppm. The results showed that the IC50 value of palado leaves extract was 26.182 ppm. Palado leaves extract is classified as a very powerful antioxidant based on the IC50 value. The optimum percentage antioxidant activity of palado leaves extract in inhibiting free radicals was by 84.84%.
Organizational elites and the discourse of flexibility: Will be the consultants in the future managers?
Authors: Sanchez Jose Paulo de Angelo , Donadone Julio Cesar
Published: March 2017

The purpose of this article is to investigate how the discourse of flexibility could be used instrumentally by organizational elites in their disputes for power within the firms and how this phenomenon can affect some aspects of organizational behavior. The careers of business consultants who worked in a consulting firm operating in Brazil have been searched. Resumes of 239 individuals were analysed and the empirical evidence found allowed to advance in the understanding of the issue under study. The data obtained were analysed from the perspective of institutional logic and power structures established by organizational elites. The results showed that the passage by a renowned consulting firm represents a very effective shortcut to executive positions in organizations of various sectors of activity, especially when associated with a MBA for some prominent international business school, highlighting the use and alignment of the discourse of the interests of the elites to legitimize their organizational claims to rise to positions of power in organizations without having to go through the time-consuming path required for the assimilation of specific knowledge of each type of activity or business.
Board attributes and performance of government-linked companies (GlCs): Evidence from an emerging economy
Authors: Hassan Ahmad Fahmi Sheikh , Karbhari Yusuf , Isa Ahmad Afendi Mohamad , Ab Razak Nazrul Hisyam
Published: March 2017

Government linked companies (GLCs) play a unique role in the Malaysian public sector and are perceived to be the key drivers of the economy wielding influence in the financial market. This study investigates the impact of an important governance mechanism, i.e. the board of directors on performance of 32 Malaysian listed GLCs for the period 2008 to 2013. The board attributes examined include board size, board structure, board independence, board competence, board meetings and directors’ equity ownership. The three proxies of financial performance employed are return on assets (ROA), return on equity (ROE) and earnings per share (EPS) with firm size and leverage being used as control variables. We find board size to have a positive but insignificant relationship with ROA whilst board structure, board independence and board competence indicate a positive relationship with ROE. Board competence also shows a positive relationship with EPS. However, board independence and directors equity ownership report a significant inverse relationship with ROA. A possible explanation is that independence and controlling stake of the board could not influence board strategy formulation and business decisions as government maintains full authority and final say on matters. Overall, the study contributes to the growing body of literature especially relating to Government linked companies.
Subscales correlations between MSSS-88 and PRISM scales in evaluation of spasticity for patients with multiple sclerosis
Authors: Knezevic Tatjana , Rodic Sindi , Foti Calogero , Nikolic-Drulovic Jelena , Dujmovic Irena , Konstantinovic Ljubica
Published: March 2017

Introduction/Objective. Patient-reported outcomes have been recognized as an important way of assessing health and well-being of patients with multiple sclerosis (MS). The aim of the study is to determine the correlation between different subscales of Patient-Reported Impact of Spasticity Measure (PRISM) and Multiple Sclerosis Spasticity Scale (MSSS-88) scales in the estimation of spasticity influence on different domains Methods. The study is a cross-sectional observational study. MSSS-88 and PRISM scales were analyzed in five domains (body-function domain, activity domain, participation domain, personal factors/wellbeing domain, and hypothesis). For statistical interpretation of the correlation we performed the Spearman?s ?-test, concurrent validity, divergent validity, and the linear regression model. Results. We found a significant correlation between subscales of evaluated MSSS-88 and PRISM scales for body domains; the highest correlation was between the need for assistance/positioning (NA/P) and walking (W). Spasticity has the weakest correlation with the need for intervention (NI). The presence of pain has a negative impact and significant positive correlation between pain discomfort and NI. In the domain of body function for males, there was a non-significant correlation between muscle spasms and NI. The same applies for social functioning and social embarrassment domains, as well as for emotional health and psychological agitation for personal factors / wellbeing domain. The differences between genders of MS patients persist in different domains; muscle spasms are strong predictors for NI, and body movement is a strong predictor versus W for NA/P. Conclusion. MSSS-88 and PRISM scales can be considered reliable in measuring different domains of disability for MS patients with spasticity. Because it is shorter, quicker, and simple to use, it is concluded that the PRISM scale can successfully compete with and replace the MSSS-88 scale in certain domains.
Ethics and marketing in esthetic dentistry
Authors: Obradovic-Djuricic Kosovka , Djuricic Tijana , Medic Vesna , Radovic Katarina
Published: March 2017

Contemporary dentistry is, first of all, characterized by diverse accelerated development, owing to improvements of information and other technologies, as well as the development of dental materials (shape-memory biomaterials, nanomaterials, biomaterials for application in tissue engineering, etc.). Expert doctrinaire attitudes move from the direction of operative interventions, whereby disease and acute symptoms are primarily treated, towards the strengthening of oral health by minimally invasive procedures. A particular place in patients? total rehabilitation belongs to numerous esthetic procedures which, to a large extent, make up a wants-based service, led by the patients? needs and affinities. This paper deals with differences between cosmetic and esthetic dentistry. The complexity of esthetic dentistry, which favors therapy with the change of function parameters in care for the patient, is emphasized. On the other hand, more attention is paid to the need to know and respect ethical and marketing principles that follow any activity of dentists, starting from the first contact with the patient, the selection of certified materials, to the implementation of the appropriate treatment plan. Well-directed communication and comprehensive awareness of the patient, the use of the visual analog scale, consideration of realistic resources in therapy, and the acceptance of de Bono model of adopted parallel thinking are determinants which help dentists define a problem adequately, find quality solutions, open alternative solutions, and reduce the potential risks in patients? therapy.
Exocytosis-Mediated Urinary Full-Length Megalin Excretion Is Linked With the Pathogenesis of Diabetic Nephropathy
Authors: De Shankhajit , Kuwahara Shoji , Hosojima Michihiro , Ishikawa Tomomi , Kaseda Ryohei , Sarkar Piyali , Yoshioka Yusuke , Kabasawa Hideyuki , Iida Tomomichi , Goto Sawako , Toba Koji , Higuchi Yuki , Suzuki Yoshiki , Hara Masanori , Kurosawa Hiroyuki , Narita Ichiei , Hirayama Yoshiaki , Ochiya Takahiro , Saito Akihiko
Published: March 2017

Efficient biomarkers for diabetic nephropathy (DN) have not been established. Using ELISA, we found previously that urinary levels of full-length megalin (C-megalin), a multiligand endocytic receptor in proximal tubules, was positively correlated with DN progression in patients with type 2 diabetes mellitus (T2DM). Here, we found that urinary extracellular vesicle (UEV) excretion and C-megalin content in UEVs or in their exosomal fraction increased along with the progression of the albuminuric stages in patients with T2DM. Cultured immortalized rat proximal tubule cells (IRPTCs) treated with fatty acid–free BSA or advanced glycation end product–modified BSA (AGE-BSA), endocytic ligands of megalin, increased EV excretion, and their C-megalin content. C-megalin excretion from IRPTCs via extracellular vesicles was significantly blocked by an exosome-specific inhibitor, GW4869, indicating that this excretion is mainly exocytosis-mediated. AGE-BSA treatment of IRPTCs caused apparent lysosomal dysfunction, which stimulated multivesicular body formation, resulting in increased exosomal C-megalin excretion. In a high-fat diet–induced, megalin-mediated kidney injury model in mice, urinary C-megalin excretion also increased via UEVs. Collectively, exocytosis-mediated urinary C-megalin excretion is associated with the development and progression of DN in patients with T2DM, particularly due to megalin-mediated lysosomal dysfunction in proximal tubules, and hence it could be a candidate biomarker linked with DN pathogenesis.
Electrocardiographic Abnormalities and Cardiovascular Disease Risk in Type 1 Diabetes: The Epidemiology of Diabetes Interventions and Complications (EDIC) Study
Authors: Soliman Elsayed Z. , Backlund Jye-Yu C. , Bebu Ionut , Orchard Trevor J. , Zinman Bernard , Lachin John M. ,   the DCCT/EDIC Research Group
Published: March 2017

OBJECTIVE

We examined the association between the prevalence and incidence of electrocardiographic (ECG) abnormalities and the development of cardiovascular disease (CVD) in patients with type 1 diabetes, among whom these ECG abnormalities are common.

RESEARCH DESIGN AND METHODS

We conducted a longitudinal cohort study involving 1,306 patients with type 1 diabetes (mean age 35.5 ± 6.9 years; 47.7% female) from the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) Study. ECG abnormalities were defined by the Minnesota Code ECG classification as major, minor, or no abnormality. CVD events were defined as the first occurrence of myocardial infarction, stroke, confirmed angina, coronary artery revascularization, congestive heart failure, or death from any CVD.

RESULTS

During a median follow-up of 19 years, 155 participants (11.9%) developed CVD events. In multivariable Cox proportional hazard models adjusted for demographics and potential confounders, the presence of any major ECG abnormalities as a time-varying covariate was associated with a more than twofold increased risk of CVD events (hazard ratio [HR] 2.10 [95% CI 1.26, 3.48] vs. no abnormality/normal ECG, and 2.19 [1.46, 3.29] vs. no major abnormality). Also, each visit (year) at which the diagnosis of major ECG abnormality was retained was associated with a 30% increased risk of CVD (HR 1.30 [95% CI 1.14, 1.48]). The presence of minor ECG abnormalities was not associated with a significant increase in CVD risk.

CONCLUSIONS

The presence of major ECG abnormalities is associated with an increased risk of CVD in patients with type 1 diabetes. This suggests a potential role for ECG screening in patients with type 1 diabetes to identify individuals at risk for CVD.
دراسات في علوم القرآن المعاصر: موقف السر سيد أحمد خان من إعجاز القرآن الكريم
Authors: Maghribi Hamdan
Published: March 2017

This paper deals with the I’jaz Alquran according to Sir Syed Ahmad Khan. It is concluded that Khan toughly emphasized his interpretation concept on rationalism. Khan also applied it for Quranic studies, such as emphasizing on rational and scientific facts that negate several metaphysical and invisible issues contained in Qur’an. Following his view on the prophets’ miracle which is irrational and unacceptable for human mind. Again, the concept of I’jaz Alquran is also one of Khan’s thought on rationality, though he acknowledged the great literary contents of Quran, as well he uncategorized it as a miracle. He then said that God’s challenge human to afford the similar verses to Qur’an is unclassified among I’jaz Qur’an, since God did the similar thing to the book of Torah as well. Unlike the opinion of majority Tafseer scholars, among the Salaf and Khalaf, they viewed that God’s challenge and the Quran high literature are evidence of I’jaz Quran.
HUBUNGAN GAYA KOGNITIF, KECERDASAN EMOSIONAL DENGAN PRESTASI BELAJAR FISIKA SISWA IPA SMA KRISTEN BARANA RANTEPAO TORAJA
Authors: Sanang Yulia , Loekmono J.T.Lobby
Published: March 2017

Penelitian korelasional ini dilakukan dengan tujuan untuk: mengetahui signifikansi hubungan gaya kognitif dan kecerdasan emosional dengan prestasi belajar fisika pada siswa SMA Kristen Barana yang melibatkan 135 orang siswa jurusan IPA. Pengumpulan data pada penelitian ini mengunakan instrument The Embedded Figure Test untuk mengukur variabel gaya kognitif dan Bar on Inventory untuk mengungkap kecerdasan emosional sedang analisis datanya menggunakan uji korelasional Rank Spearman. Hasil analisis menunjukkan bahwa ada hubungan signifikan antara gaya kognitif dengan prestasi belajar fisika r = 0,257 dengan p = 0,003<0,05 dan tidak ada hubungan signifikan antara kecerdasan emosional dengan prestasi belajar fisika peserta didik IPA di SMA Kristen Barana dengan koefisien r xy xy = 0,053 dengan p = 0,541>0,05.
MENUMBUHKAN PERAN SERTA MASYARAKAT DALAM MELESTARIKAN KEBUDAYAAN DAN BENDA CAGAR BUDAYA MELALUI PEMBERDAYAAN MASYARAKAT DI KAWASAN WISATA DUSUN CETO
Authors: Wuryani Emy , Purwiyastuti Wahyu
Published: March 2017

Hasil kebudayaan dan benda cagar budaya sebagai atraksi wisata telah banyak menarik wisatawan untuk berkunjung ke tempat itu. Benda Cagar Budaya yang banyak dikunjungi wisatawan antara lain berupa candi dan situs sejarah. Di kawasan wisata dusun Ceto, candi dan situs sejarah menjadi tujuan utama wisatawan berkunjung ke Dusun Ceto. Namun ada kekhawatiran, dari beberapa warga apabila kawasan ini nanti “dijajah” dan tergerus arus modernisasi yang dibawa wisatawan sehingga masyarakat tidak lagi melestarikan peninggalan sejarah dan budaya yang menjadi warisan leluhurnya. Untuk itu perlu ada peranserta dari warga masyarakat dalam melaksanakan program konservasi di kawasan wisata Dusun Ceto. Tujuan dari penelitian ini adalah untuk mendeskripsikan bentuk-bentuk peran serta masyarakat di kawasan wisata Dusun Ceto dalam upaya melestarikan kebudayaan dan BCB di dusun Ceto. Adapun manfaat dari penelitian ini berfungsi sebagai pemberdayaan masyarakat yang memiliki kepedulian atas peninggalan sejarah dan warisan budaya yang harus dilestarikan. Metode penelitian dengan menggunakan teknik wawancara, observasi – partisipasi, survei untuk wisatawan, studi banding ke desa wisata, dan pendampingan. Hasil penelitian menunjukkan bahwa peranserta masyarakat di kawasan wisata Dusun Ceto memiliki kepedulian yang tinggi dan berperan aktif dalam menjaga dan melestarikan peninggalan sejarah dan budayanya. Hal ini ditunjukkan melalui kegiatan kerja bakti setiap hari Minggu di situs sejarah, pertemuan rutin, menghidupkan kesenian karawitan, dan mengadakan pasraman.
PERMASALAHAN DAN TANTANGAN GURU PKn MENGHADAPI PERUBAHAN KURIKULUM (2013)
Authors: Nusarastriya Yosaphat Haris
Published: March 2017

Perubahan kurikulum selalu untuk menjawab tantangan yang sedang dirisaukan masyarakat, salah satunya ialah karena siswa lebih cenderung memiliki (mendapatkan) kompetensi kognitif. Apa yang harus dijawab dengan kurikulum mendatang? Untuk menjawab pertanyaan itu harus mengerti benar tentang kelemahan dalam pendidikan pada umumnya di Indonesia. Banyak ahli menilai bahwa pendidikan di Indonesia lebih mengisi pikiran dari pada mengajarkan cara berpikir. Hasil berpikir dan bernalar siswa-siswa Indonesia masih rendah dan oleh karena itu tantangan terbesar pendidikan di Indonesia adalah bagaimana menerjemahkan konsepsuccessful intelligence (SI) ke dalam operasional
sistim pendidikan. Pendidikan di Indonesia nampaknya belum berhasil membentuk SI, khususnya dalam kemampuan berpikir tingkat tinggi. Dalam hal inilah tantangan guru PKn menghadapi kurikulum 2013 yang arahnya tidak hanya memberi pengetahuan tetapi juga mengajar cara berpikir. Pendidikan Pancasila dan Kewarganegaraan memiliki kepentingan untuk menterjemahkan berpikir tingkat tinggi dalam proses pembelajarannya karena salah satu tujuan Pendidikan Pancasila dan Kewarganegaraan adalah membentuk kepribadian di mana berpikir kritis merupakan unsur penting dalam kepribadian itu.
REVISI TAKSONOMI PEMBELAJARAN BENYAMIN S. BLOOM
Authors: Darmawan I Putu Ayub , Sujoko Edy
Published: March 2017

Fokus utama dalam tulisan ini adalah untuk mendeskripsikan perubahan Taksonomi Bloom diantaranya perubahan nama dalam taksonomi yang mengambil bentuk menjadi kata kerja, perubahan urutan taksonomi dimana evaluasi dalam taksonomi lama terdapat pada urutan akhir berubah menjadi urutan kelima dan sintesis dalam taksonomi lama diganti menjadi mencipta, dan perubahan sub kategori. Tulisan ini juga menguraikan tentang hal-hal penting dalam revisi taksonomi seperti pengetahuan metakognisi dan tabel taksonomi. Serta manfaat taksonomi revisi dalam belajar bermakna. Taksonomi Bloom menjadi kasifikasi pernyataan-pernyataan yang digunakan untuk memprediksi kemampuan peserta didik dalam belajar sebagai hasil dari kegiatan pembelajaran. Pengaruh taksonomi Bloom lama telah dirasakan sampai saat ini dan memberi manfaat yang sangat berharga. Revisi taksonomi Bloom meliputi perubahan nama dalam taksonomi dari kata benda menjadi kata kerja, urutan taksonomi yang melingkupi perubahan tata letak evaluasi,
perubahan sintesa menjadi mencipta.
PERBANDINGAN HASIL BELAJAR SISWA DENGAN MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD DAN PEMBELAJARAN KOOPERATIF TIPE NHT TERHADAP HASIL BELAJAR SISWA PADA MATA PELAJARAN MATEMATIKA KELAS VIII DI SMP NEGERI 1 GETASAN
Authors: Prasetyo Jonet , Sutriyono Sutriyono
Published: March 2017

Penelitian ini merupakan jenis penelitian eksperimen dengan menggunakan desain penelitian Quasi Experimental Nonequivalent Control Group Design. Tujuan dari penelitian ini yaitu untuk mengetahui perbedaan hasil belajar siswa pada matapelajaran matematika, setelah diajar dengan menggunakan Model Pembelajaran Kooperatif tipe STAD dan Model Pembelajaran Kooperatif Tipe NHT. Populasi penelitian ini adalah siswa kelas VIII SMP Negeri 1 Getasan,
dengan dua kelas eksperimen yaitu kelas VIII A yang memperoleh perlakuan berupa Pembelajaran Kooperatif Tipe STAD dan Kelas V III F yang memperoleh perlakuan berupa Pembelajaran Kooperatif Tipe NHT. Teknik pengumpulan data menggunakan instrumen tes, yang meliputi pretes dan postes. Untuk analisis data menggunakan uji beda t-test. Dari hasil penelitian menyatakan bahwa, terdapat perbedaan signifikan antara hasil belajar siswa yang diajar menggunakan Model Pembelajaran Kooperatif Tipe STAD dan Model Pembelajaran Kooperatif Tipe NHT pada mata pelajaran matematika. Nilai rata-rata hasil belajar matematika siswa yang diajar menggunakan Model Pembelajaran Kooperatif Tipe STAD lebih baik, daripada siswa yang diajar dengan menggunakan Model Pembelajaran Kooperatif Tipe NHT.
MENINGKATKAN KOMUNIKASI INTERPERSONAL MELALUI LAYANAN BIMBINGAN KLASIKAL PADA SISWA KELAS X SMA NEGERI 1 GETASAN, KABUPATEN SEMARANG
Authors: Kesitawahyuningtyas Maya Theofany , Padmomartono Sumardjono
Published: March 2017

Tujuan penelitian ini yaitu untuk meningkatkan komunikasi interpersonal siswa SMA Negeri 1 Getasan, Kabupaten Semarang melalui layanan bimbingan klasikal. Penelitian eksperimen semu ini menggunakan desain pretest dan posttest. Ditetapkan 20 siswa kelas X.1 sebagai kelompok eksperimen dan 20 siswa kelas X.2 sebagai kelompok kontrol berdasarkan perolehan skor yang rendah pada skala komunikasi interpersonal. Kelompok eksperimen mendapatkan bimbingan klasikal dengan materi untuk meningkatkan komunikasi interpersonal selama 5 (lima) sesi. Untuk menguji perbedaan perolehan skor komunikasi interpersonal digunakan analisis Mann Whitney dengan p = 0,000 0,050 pada mean rank pretest kelompok eksperimen 10,75 dan mean rank posttest kelompok eksperimen 30,25. Selisih mean rank pretest dan mean rank posttest kelompok eksperimen sebesar 19,50 artinya ada peningkatan keterampilan komunikasi interpersonal yang signifikan setelah siswa menempuh bimbingan klasikal selama 5 sesi. Disimpulkan bahwa bimbingan klasikal dapat meningkatkan secara signifikan komunikasi interpersonal siswa kelas X.1 SMA Negeri 1 Getasan, Kabupaten Semarang.