bluuebunny/crossref_metadata_2025 huggingface dataset:
The familiarity of parents-teenagers and depressed high school adolescents in the city of Yogyakarta
Authors: Emilda Febriani , Machira Carla , Wahab Abdul
Published: March 2018

Familiarity of teens-parents and high school teenagers with incidence of depression in Yogyakarta CityPurposeThis study aimed to determine the differences in the incidence of depression in high school teenagers who are familiar and not familiar with their parents in Yogyakarta City.MethodsThis research was a cross-sectional study, involving 200 high school teenagers in Yogyakarta city and conducted in five high schools in Yogyakarta city. The independent variable was familiarity of parent-teens, the dependent variable was teenager depression and external variables were gender, parental employment status, and socioeconomic status. Data analysis included univariable, and bivariable analysis with Chi-square tests, to determine the strength of the relationship between independent and dependent variable and multivariable analysis with logistic regression tests.ResultsBivariable analysis showed a significant correlation between familiarity of parent-teens with teenagers’ depression. Teenagers who were not familiar with their parents were potentially 3.7 times more likely to get depressed than teenagers who were familiar with their parents. Multivariable analysis showed that there was a significant relationship between parental familiarity with teenagers’ depression when controlled for the variable of gender. Teenagers who are not familiar with their parents and female gender have 7.6 times greater potential to become depressed than teenagers who are familiar with their parents and male gender.ConclusionThe incidence of depression in high school teenagers who are not familiar with their parents was higher than teenagers who are familiar with their parents.
Perilaku gaya hidup dan obesitas sebagai faktor risiko kejadian diabetes melitus tipe 2 di RSUD. Aji Batara Agung Dewa Sakti Samboja Kabupaten Kutai Kartanegara
Authors: Sundari Neni , Dewi Fatwa Sari Tetra , Ikhsan Muhammad Robikhul
Published: March 2018

Lifestyle behavior and obesity as risk factors for the occurrence of type 2 diabetes mellitus at RSUD Aji Batara Agung Dewa Sakti Samboja, Kutai KartanegaraPurposeThe aim of this study was to determine the correlation between knowledge of healthy behavior and obesity on the occurrence of type 2 diabetes mellitus.MethodsThis research was an observational-analytical- quantitative study with a case-control design. The study subjects were selected by purposive sampling totaling 212 outpatients and inpatients in the RSUD Aji Batara Agung Desa Sakti in which 106 patients were suffering type 2 diabetes and 106 control patients that were not suffering diabetes mellitus. All subjects were between 25-64 years old.ResultsKnowledge of healthy behavior was not statistically significant in the occurrence of type 2 diabetes mellitus while in the univariable data analysis, central obesity was statistically significant. This finding was closely related to the behavior of low physical inactivity but central obesity increased with age and the prevalence was greater in women. Multivariable analysis showed that central obesity, physical inactivity (moderate physical activity and low activity) and very high incomes were the main risk factors for type 2 diabetes mellitus.ConclusionThe occurrence of type 2 diabetes mellitus in the community needs to be reduced by improving healthy lifestyles, physical activity and patterns of healthy diet, by eating fruits and vegetables, and not drinking alcohol nor smoking.
Determinan kejadian TB Paru BTA (+) di Kabupaten Bandung Barat
Authors: Agustina Fitria , Saleh Yusrizal Djam’an , Kusnanto Hari
Published: March 2018

Determinants of pulmonary tuberculosis BTA (+) in the district of West BandungPurposeThis study aimed to determine the incidence of TB determination BTA (+) in the district of West Bandung. MethodsThis research was an analytic observational study with a case control design. Subjects were patients aged 15 years and over who came to the clinic for treatment with a diagnosis of patients with TB BTA (+) as the case group, and patients who did not have TB diagnosis by an examining physician in the clinic as a control group. Samples included 140 people. Data analysis was performed by  univariable, bivariable and multivariable analysis. ResultsIncome and education were significantly associated with the incidence of TB BTA (+), with p-value 0.040 and 0.037 (p<0.05), respectively. Physical environment, smoking habits, the walls, the floor of the house, humidity, ventilation, lighting, cooking fuel, cigarette smoke exposure were significantly associated with the incidence of TB BTA (+) (p-value <0.05). History of contact (p-value 0.946> 0.05) and a history of BCG immunization (p-value 0.611> 0.05) were not significantly associated with the incidence of TB BTA (+). Conclusion Physical factors in the environment such as ventilation and fuel for cooking were significantly associated with the incidence of TB BTA (+). Appropriate efforts are recommended to avoid risks.
Aktivitas fisik dan konsumsi camilan pada remaja obesitas
Authors: Irdianty Mellia Silvy , Sudargo Toto , Hakimi Mohammad
Published: March 2018

Physical activities and snack consumption of rural and urban obese adolescents in Bantul PurposeThis study to determine the difference of physical activity and snack consumption in adolescent obesity in urban and rural areas in the district of Bantul.MethodThis study used a case control study design, with a population of high school teenagers in Bantul. Cases are obese adolescents who were diagnosed at screening, while the control is not obese adolescents. Data analysis included univariable consist of frequency distribution, bivariable consist of chi-square and t-test and also logistic regression test for mulitivariabel analysis.ResultsAdolescents who do light physical activities are more likely have obesity almost 5 times than those who do physical activity in normal. Kind of snack and obesity have correlation in statistic and practical, which is many research prove that obesity found 2 times than adolescents who consume fried foods.ConclusionThere are differences of mean in snack weight and snack intake in obese adolescents. The low physical activity, high snack frequency, type of fried foods, snack weight, and snack intake are most likely to increase the incidence of obesity.
Kebiasaan Ibu untuk cuci tangan dan kejadian diare anak; Studi korelasi di Desa Muara Badak Ilir Kecamatan Muara Badak Kabupaten Kutai Kartanegara tahun 2015
Authors: Rifai Rahmawati , Wahab Abdul , Prabandari Yayi Suryo
Published: March 2018

Mothers’ hand-washing habits and incidence of diarrhea among their children: a community study in Kutai KartanegaraPurposeThis study aimed to explore the relationship between mothers’ handwashing with children’s diarrhea in Muara Badak Ilir Village, Muara Badak District, Kutai Kartanegara Regency. MethodsSixty-one mothers residing in Muara Badak Ilir village who have children aged 7-24 months were interviewed with questionnaires and guidelines. Data were analyzed using univariable, bivariable with chi square tests and multivariable analysis. ResultsThere were 43 respondents who were not used to washing their hands with soap, while, children aged 7-24 months who had diarrhea in the last 2 months were 39 children. Respondents who did not wash their hands with soap were 6.6 times more likely to experience diarrhea compared with respondents who wash their hands with soap.ConclusionThere was a correlation between mothers’ hand-washing habit and incidence of diarrhea among children in Kutai Kartanegara. Primary health care workers are expected to be more active in providing information about diarrhea and how to do hand-washing properly. This study recommends to increase the role of primary health workers through training and coaching in order to become better health promoters in each region.
Determinan ketidakpatuhan terapi antiretroviral pada orang dengan HIV/AIDS dewasa
Authors: Harahap Zulpahmi , Arguni Eggi , Rahayujati Theodola Baning
Published: March 2018

Determinants of non-adherence to antiretroviral therapy in adults with HIV/AIDSPurposeThis study aimed to determine the factors of non-adherence ARV therapy in adult PLWHA.MethodsA case-control study was conducted using secondary data of the Cilacap VCT clinic with consecutive sampling technique. The total sample was 204, consisting of 102 cases and 102 controls (1:1). The cases were adult PLWHA who did not adhere to ARV therapy and the controls were adult PLWHA who adhere to ARV therapy. The bivariate analysis used Chi-square and Fisher's exact tests and multivariate analysis used logistic regression tests. ResultsThe variables that were shown to jointly affect non-adherence to ARV therapy in adult PLWHA were the level of education, CD4 count, PMO and opportunistic infections.ConclusionsThe risk factors of non-adherence to ARV therapy in adult PLWHA were the level of education, PMO, CD4 count and opportunistic infections. There needs to be a special assistance and counseling program on a regular basis to PLWHA adults with low education, obligating all PLWHA adults that start ARV therapy to have a PMO, continue HIV screening programs to entire population at risk and advocate the local governments to facilitate PLWHA who can not afford to obtain CD4 test .
Purwarupa Kendali Lengan Dental Light dengan Isyarat Jari Berbasis Pengolahan Citra Digital
Authors: Al Hilmi Muhammad Anis , Harjoko Agus
Published: March 2018

AbstrakDental light atau lampu sorot yang terdapat pada kursi praktik dokter gigi  merupakan salah satu bagian penting pada dental chair. Dental light perlu diatur posisinya agar arah cahaya sorot sesuai kebutuhan dokter. Cara biasa untuk mengaturnya adalah dengan digerakkan dengan tangan secara langsung oleh dokter. Cara tersebut dirasakan cukup merepotkan dan mengurangi kesterilan tangan dokter karena harus menyentuh dental light secara langsung. Dalam penelitian ini, masalah tersebut dicoba diselesaikan dengan teknologi pengolahan citra digital.  Sebuah webcam digunakan untuk meng-capture citra. Kemudian citra diolah sampai mengenali isyarat jari, untuk kemudian dapat mengendalikan dental light. Pengenalan isyarat jari dalam penelitian ini menggunakan metode pemisahan objek dengan latar belakangnya. Range warna dari sarung tangan dokter dipakai sebagai acuan pengenalan objek tangan. Model warna yang dipakai adalah model HSV.Dari 4 warna sarung tangan yang diuji, warna dengan hasil terbaik adalah warna kuning. Jarak optimal antara webcam dan posisi tangan adalah 55-65 cm. Waktu respon rata-rata dari saat ada isyarat sampai lengan robot bergerak adalah 0,4-0,6 sekon. Dengan hasil penelitian ini diharapkan dokter tidak perlu lagi menyentuh langsung dental light sehingga pemakaiannya lebih mudah dan steril. Kata kunci—dental light, lengan robot, pengolahan citra, range warna Abstract Dental light or head-light that exists on a dental chair, is one of essenstial part of dental chair instruments. Dental light needs an appropriate  positioning control to direct the light as needed by the dentist. The common way of controlling dental light is the dentist manually directing the lamp using their hand. In this research, that problem is tried to be solved using digital image processing technology. A webcam is used to capture image, then the image is processed until yield a recognition result for finger gesture and then create an output to contol dental light. Finger gesture recognition is carried out by color filter method. The color range of dentist gloves is used as references to recognize the dentist’s hand. The color model that used in this research is HSV.From 4 colors of dentist gloves that tested, the best color is yellow. The optimum distance between webcam and hand position is 55-65 cm. The average time response from the time that finger gesture appear until the prototype of arm robot moves is 0.4-0.6 second. Keywords—dental light, arm robot, image processing, color range
Tratamiento con hormona de crecimiento y craneofaringioma: presentación de caso
Authors: Carvajal Martínez Francisco
Published: March 2018

El craneofaringioma es el tumor más frecuente de la edad pediátrica. Se localiza frecuentemente en el área supraselar; histológicamente benigno, pero con carácter expansivo que provoca manifestaciones clínicas secundarias a la afectación de estructuras vecinas. El tratamiento es quirúrgico y, en la mayoría de los casos, trae como consecuencia un panhipopituitarismo. El tratamiento con hormona de crecimiento (GH) en estos casos es un tema de debate. A nivel internacional se ha realizado en situaciones excepcionales, obteniendo resultados favorables. En Cuba, este es el primer caso dentro de una casuística de 813 pacientes tratados con GH, en 12 años de experiencia.Describimos el caso clínico de una paciente con diagnóstico de craneofaringioma, operada, que recibió tratamiento con hormona de crecimiento. Se trata de una fémina que a los 9 años de edad inicia sus estudios por presentar talla baja. Se le realizó test de clonidina que reveló déficit de GH. En la tomografía computarizada de cráneo se observó lesión hipofisaria de 2 cm de diámetro que ocupa cisterna supraselar, con lo que se llega al diagnóstico de un craneofaringioma. Se lleva a cabo la intervención quirúrgica con resección total macroscópica del tumor. Posteriormente, se instaura un panhipopituitarismo, por lo que se realiza sustitución del eje tiroideo, adrenal, gonadal y hormona antidiurética. Se evalúa alteración del crecimiento, ausencia de recidiva tumoral y, con el consentimiento de la familia, se inicia tratamiento con GH, con lo que se obtiene ganancia de talla favorable de 39 cm/5años, sin evidencia de recidiva tumoral.
Intoxicación con amlodipina con hipotensión y edema pulmonar no cardiogénico
Authors: Ramos Mercedes
Published: March 2018

Las intoxicaciones por medicamentos han sido, en los últimos años, una importante causa de morbilidad y mortalidad en edades pediátricas. La Amlodipina es un grupo de dihidropiridina de Bloqueadores de Canales de Calcio (BCC) con una vida media de 30-50 horas y con un gran volumen de distribución. En este trabajo describimos una fémina de 14 años de edad, que ingiere 20 pastillas antihipertensivas tipo calcio antagonista (Amlodipina). A los tres días, presenta hipotensión y datos clínicos de edema pulmonar. Entonces, se procede a colocar a la paciente en ventilación asistida, proporcionándole infusión de dobutamina, adrenalina y bolus de gluconato de calcio, mejorando así el cuadro clínico en 72 horas.
Frecuencia de enfermedad nodular tiroidea en los pacientes que asisten al servicio de endocrinología en un hospital de Santo Domingo, República Dominicana, durante el período febrero-abril de 2016
Authors: Díaz Jacquelín
Published: March 2018

La Enfermedad Nodular Tiroidea (ENT) es motivo de frecuente consulta médica, por lo que debe ser evaluada con precisión para realizar un tratamiento adecuado, en el momento preciso. Esta afecta entre el 4-7% de la población, siendo las mujeres las más propensas a presentar la enfermedad.Determinamos la frecuencia de Enfermedad Nodular Tiroidea en los pacientes que asisten al servicio de endocrinología en un hospital de Santo Domingo, República Dominicana, durante el período febrero-abril de 2016, en un estudio de carácter retrospectivo, descriptivo y de corte transversal. Evaluamos 206 archivos médicos y sonografías de los pacientes diagnosticados con Enfermedad Nodular Tiroidea.El 96% de los pacientes, equivalente a 197 casos de los nódulos tiroideos, se presentan en mujeres, mientras que solo un 4%, igual a 9 casos, fueron identificados en hombres. La aparición de nódulos se incrementa entre los rangos de edad de 50-60 años y disminuye significativamente al superar los 60 años de edad. Predominan los coloides y quistes simples, según el tipo histológico de los nódulos, con una aparición muy poco frecuente de carcinomas.
Experiencia en el tratamiento con hormona de crecimiento en las pacientes con Síndrome de Turner
Authors: Morales Sandra , Almánzar Rosario
Published: March 2018

En este trabajo se presenta la evaluación de la experiencia de 38 pacientes con Síndrome de Turner que recibieron hormona del crecimiento en el Hospital Infantil Dr. Robert Reid Cabral, dentro del Programa de Alto Costo del Ministerio de Salud Pública, durante el período comprendido entre enero de 2015 y enero de 2017. El grupo etario más representativo fue el de 11-14 años, el cual presentó una velocidad de crecimiento igual o mayor a 6 cm/año. La mayoría de estos pacientes proviene de Santo Domingo. El cariotipo de mayor porcentaje fue el tipo mosaico, con 71.1%. El 100% de las pacientes asistió a su cita periódica y recibió la hormona de crecimiento de manera continua.Las comorbilidades más frecuentes fueron las osteopatías y las endocrinopatías, más asociadas a cariotipo mosaico. En 15 casos hubo interrupción del tratamiento debido a clinodactilia pronunciada más escoliosis, cefalea persistente, cuadro de mareos y debilidad más cianosis. En 8 de estos casos se completó la edad ósea tope (12 años). Dos casos no respondieron al tratamiento. Hubo un caso que inició residencia fuera del país y otro de traspaso a un plan de seguro de salud privado. Los 23 casos restantes siguen activos en el Programa de Alto Costo. Las niñas con Turner llegan muy tarde por lo que no pueden obtener un beneficio mayor en su talla final.
Análisis del perfil sociodemográfico de las adolescentes embarazadas asistidas en una unidad de atención integral de un hospital de Santo Domingo, República Dominicana, período febrero-abril, 2017
Authors: De la Rosa Omar
Published: March 2018

El embarazo en adolescentes es una de las problemáticas más frecuentes en la población dominicana. Según el Fondo de Población de las Naciones Unidas (UNFPA), la República Dominicana está entre los cinco países de América Latina con mayor número de embarazos prematuros, con una tasa de natalidad en jóvenes entre 15 y 19 años del 20,5%, en 20151. Numerosos estudios han concluido que los factores sociodemográficos tienen una gran influencia en el embarazo precoz; debido a la falta de esfuerzos para realizar campañas nacionales de educación sexual, es preocupante la cantidad de adolescentes, principalmente entre 13 y 19 años, que quedan embarazadas, desconociendo los grandes riesgos que esto supone.En este trabajo, analizamos el perfil sociodemográfico de las adolescentes embarazadas asistidas en una  unidad de atención integral de un hospital de Santo Domingo, República Dominicana, durante el período febrero-abril de 2017, mediante un estudio prospectivo, descriptivo y de corte transversal, en el que se analizaron las características sociales implicadas en el embarazo temprano, a partir de una muestra de 130 adolescentes embarazadas. El estudio indicó que la edad más frecuente en la que se presenta el embarazo adolescente fue 19 años, con un 34.6%. Del mismo modo, se determinó que más de la mitad de las muestras se encontraban en un estado de unión libre (53%), equivalente a 69 casos; además, el sector más frecuente fue Villa Mella, con un 18.5%; y más del 80% de las pacientes tenía seguro de salud público subsidiado por el gobierno.
Editorial
Authors: Morla Báez Elbi
Published: March 2018

No precisa de resumen.
Galactosemia clásica (a propósito de un caso) Unidad Estudios Especiales Adjunto Cenismi, Hospital Infantil Dr. Robert Reid Cabral (HIRRC), República Dominicana
Authors: Fortuna Pérez Mayra
Published: March 2018

La galactosemia es una ocurrencia rara debido a la falla del metabolismo del azúcar galactosa en la ruta de Leloir, usada por el cuerpo para transformar D-galactosa a D-glucosa 1 fosfato, para lo cual requiere la participación de las enzimas GALK1, GALT y GALE. El gen que codifica la enzima galactosa 1 fosfato uridil transferasa (GaLT) se localiza en el cromosoma 9p13. Es la primera enzima identificada en este trastorno y también es la causa más común de galactosemia tipo I y/o galactosemia clásica (OMIM No. 230400). En este trabajo presentamos el caso de un niño de un año y tres meses de edad que, después de tres meses de vida, fue hospitalizado en varias ocasiones a causa de infecciones del tracto urinario y neumonía.Al año de edad presentó anemia severa, desnutrición marasmática, retraso motor, opacidad del cristalino bilateral y hepatomegalia de 7 cm por debajo del reborde costal derecho.
RIGID AND NON-RIGID KINEMATIC EXCITATION FOR MULTIPLY-SUPPORTED SYSTEM: ONCE MORE ABOUT THE CONTRIBUTION OF DAMPING TO THE DYNAMIC LOADS IN SEISMIC ANALYSIS
Authors: Tyapin Alexander G.
Published: March 2018

Development of linear equations of motion for seismic analysis is discussed in the paper. The paper continues the discussion: the author does not agree with colleagues putting damping matrix into the right-hand part of the equation of motion describing dynamic loads. This disagreement refers to the most popular case of “rigid” motion of multiple supports. In this paper the author follows the logic of general “non-rigid” support motion and points out a step in the equation development when the transition to “rigid” support motion (as a particular case of “non-rigid” motion) is spoiled by the opponents. In the author’s opinion, the mistake is in the implementation of the Rayleigh damping model for the right-hand part of the equation. This is in the contradiction with physical logic, as damping in the Rayleigh model is not really “internal”: due to the participation of mass matrix it works on rigid displacements, which is impossible for internal damping.
ANALYSIS OF POSSIBLE CAUSES AND MECHANISMS OF DESTRUCTION OF BUILDING STRUCTURES
Authors: Zveryayev Еvgeniy M. , Larionov Evgeniy A.
Published: March 2018

In order to better understand the wave properties of the Timoshenko equation, the derivation of the refined equation from the equations of the plane elasticity problem for a long band is carried out. The simple iterations method is used for the derivation. It includes known methods: the semi-inverse method of Saint-Venant and Picard operator. In accordance with the semi-inverse method, a part of the unknowns is defined, which are interpreted as the values of the initial (zero) approximation. Proceeding from them, a sequential computation is carried out using a sequence of the four Picard operators in such a way that the outputs of the one operator are the inputs for the next. Calculating in this way all the unknowns in the zeroth approximation by the direct integration over the transverse coordinate, the values of the initial approximation are calculated in the first approximation. These quantities are small of the second order with respect to the dimensionless thickness. Expressions for the unknowns are obtained as power functions of the transverse coordinate and as a function of the deriva-tives along the longitudinal coordinate. By the Banach fixed point theorem, the computation process is asymptot-ically convergent one. After this, boundary conditions on the long sides are satisfied by means of the derivatives of the arbitrariness, depending only on the longitudinal coordinate. This gives us the ordinary differential equations for the determination of these arbitrary functions. In turn, the integration constants of the last equations can be found from the conditions on the short sides of the strip. The ordinary differential equations are split into equations for slowly varying and quickly varying quantities. The slowly changing values give the classical solu-tion of the beam oscillations. The quickly varying solutions give the perturbed solutions describing high-frequency oscillations and singularly perturbed wave solutions for time-concentrated effects. Some of these soluions are absent in the Timoshenko equation. It is assumed that the selected shear waves provoke in the buildings subjected to the rapid impacts (shock by airplane, explosions, and seismic movements of the base) the interruptions of interlayers between the floors and subsequent progressive collapse.
ETHOD OF COMPENSATING LOADS FOR SOLVING OF ANISOTROPIC MEDIUM PROBLEMS
Authors: Koreneva Elena B.
Published: March 2018

The work applies the method of compensating loads (MCL) for solution of statics and vibrations problems of plates with cylindrical anisotropy. For receiving of basic and compensating solutions Nielsen’s equation is used. The solution expressed in terms of Bessel functions is obtained. Such way can be used in con-sideration of symmetric, antisymmetric and unsymmetric flexure of orthotropic circular plates resting on an elastic Winkler’s subgrade. The similar method can be also utilized for examination of the symmetric vibrations of the orthotropic circular plates as well as for the cases of vibrations with one or a few nodal diameters. The solutions are obtained in closed form in terms of the cylindrical functions.
Using Video to Improve Pronunciation of The Second Years Students of FKI UIR Pekanbaru
Authors: Putra Al Malikul Ikhwanda
Published: March 2018

The purpose of the research is to find out the use of video to improve students’ pronunciation. The study employed a classroom action research. The participants of this study were 37 students. They were the second year students of FKIP (faculty of teacher training and education) in Islamic University Riau (UIR) Pekanbaru, Indonesia. This study was conducted in two cycles. Each cycle comprised four meetings. The data of this research were obtained through (1) observation sheets, (2) field notes, (3) interview, and (4) tests which consisted of consonants in detail, linking, and stress within target segments based on the phonetic symbols. The findings showed that the use of video in mastering pronunciation was able to improve students’ pronunciation. The study also revealed that the activities of using video enable students to enhance the quality of sound patterns they pronounce. In this case the researcher found that the key factors that enhance the quality of sound patterns were also influenced by familiar words, student’s basic needs and level. Hence, those factors should be considered in learning and teaching pronunciation. Moreover, the activity such as listening and imitating the way native speaker pronounces words and sentences as the lesson material can help students improve their pronunciation. The average class score of students’ pronunciation increased from 58.4 in the first cycle to 88.3 in the second cycle. Material, media, classroom activities, classroom management, teacher’s approach, and teacher’s strategy were also significantly essential for the improvement of students’ pronunciation.
From English to Indonesia: Translation Problems and Strategies of EFL Student Teachers - A Literature Review
Authors: Sandra Risni Ade
Published: March 2018

This research articulates problems and strategies in translating text from English as the source text to Indonesia language as the target text. By reviewing and analysing critically mélange of concepts, examples and findings explained in some collected references, it is known that problems in translation mostly are around lexical, grammatical and semantic elements. In the other hand, the strategies used to produce acceptable translation result regarding to the readers’ of target text understanding have to consider aspects such as cultural content, the availability of equivalencies, and the ability to use the monolingual dictionary. This research also try to emphasize and to convince why finding problems and strategies of EFL student teachers in translating text is very prominent to help the mapping of which elements in English language that are still hard to be transmitted back to Indonesia language and how to overcome that problems.
The The Implementation of Project-Based Learning to Improve Students’ Speaking Skill
Authors: Riswandi Diki
Published: March 2018

This study addresses specific teaching methods, which are believed to achieve a beneficial outcome to students’ learning ability. Project Based Learning is a modern teaching method. The core idea of Project Based Learning is to connect student's experiences with school life and to provoke students to acquire new knowledge. This study aims at (1) describing to what extent the use of Project-based Learning can improve the students' speaking skill and (2) describing the teaching and learning process when Project-Based Learning is implemented in the class. The subject of the study is the seventh-grade students of one of Junior High Schools in Surakarta. The method of the study was classroom action research with two cycles. Furthermore, the data were collected through speaking assessment. The finding showed that there was improvement in the students' speaking skill. Some aspects which are improved including students' fluency, vocabulary, pronunciation, grammar, and comprehension. To conclude, PBL (Project-based learning) help student in improving their speaking skill.
Front Matter Vol. 2 March 2018
Authors: Editor Distribusi
Published: March 2018

Front Matter Vol 2, March 2018
The Roles of H2S Gas in Behavior of Carbon Steel Corrosion in Oil and Gas Environment: A Review
Authors: Asmara Yuli Panca
Published: March 2018

Hydrogen sulfide (H2S) is the most dangerous element which exists in oil and gas reservoir. H2S acidifies water which causes pitting corrosion to carbon steel pipelines. Corrosion reaction will increase fast when it combines with oxygen and carbon dioxide (CO2). Thus, they can significantly reduce service life of transportation pipelines and processing facilities in oil and gas industries. Understanding corrosion mechanism of H2S is crucial to study since many severe deterioration of carbon steels pipelines found in oil and gas industries facilities. To investigate H2S corrosion accurately, it requires studying physical, electrical and chemical properties of the environment. This paper concentrates, especially, on carbon steel corrosion caused by H2S gas. How this gas reacts with carbon steel in oil and gas reservoir is also discussed. This paper also reviews the developments of corrosion prediction software of H2S corrosion. The corrosion mechanism of H2S combined with CO2 gas is also in focused.
Specific Hepatic Sphingolipids Relate to Insulin Resistance, Oxidative Stress, and Inflammation in Nonalcoholic Steatohepatitis
Authors: Apostolopoulou Maria , Gordillo Ruth , Koliaki Chrysi , Gancheva Sofia , Jelenik Tomas , De Filippo Elisabetta , Herder Christian , Markgraf Daniel , Jankowiak Frank , Esposito Irene , Schlensak Matthias , Scherer Philipp E. , Roden Michael
Published: March 2018

OBJECTIVE

Insulin resistance and nonalcoholic fatty liver disease have been linked to several lipid metabolites in animals, but their role in humans remains unclear. This study examined the relationship of sphingolipids with hepatic and peripheral metabolism in 21 insulin-resistant obese patients without (NAFL−) or with (NAFL+) nonalcoholic fatty liver and nonalcoholic steatohepatitis (NASH) and 7 healthy lean individuals undergoing tissue biopsies during bariatric or elective abdominal surgery.

RESEARCH DESIGN AND METHODS

Hyperinsulinemic-euglycemic clamps with d-[6,6-2H2]glucose were performed to quantify tissue-specific insulin sensitivity. Hepatic oxidative capacity, lipid peroxidation, and the phosphorylated-to-total c-Jun N-terminal kinase (pJNK-to-tJNK) ratio were measured to assess mitochondrial function, oxidative stress, and inflammatory activity.

RESULTS

Hepatic total ceramides were higher by 50% and 33% in NASH compared with NAFL+ and NAFL−, respectively. Only in NASH were hepatic dihydroceramides (16:0, 22:0, and 24:1) and lactosylceramides increased. Serum total ceramides and dihydroceramides (hepatic dihydroceramides 22:0 and 24:1) correlated negatively with whole-body but not with hepatic insulin sensitivity. Hepatic maximal respiration related positively to serum lactosylceramide subspecies, hepatic sphinganine, and lactosylceramide 14:0. Liver lipid peroxides (total ceramides, sphingomyelin 22:0) and the pJNK-to-tJNK ratio (ceramide 24:0; hexosylceramides 22:0, 24:0, and 24:1) all positively correlated with the respective hepatic sphingolipids.

CONCLUSIONS

Sphingolipid species are not only increased in insulin-resistant humans with NASH but also correlate with hepatic oxidative stress and inflammation, suggesting that these lipids may play a role during progression of simple steatosis to NASH in humans.
MODELOS LOGÍSTICOS APLICADOS EN LA DISTRIBUCIÓN URBANA DE MERCANCÍAS
Authors: Gómez Marín Cristian Giovanny , Arango Serna Martín Dario , Serna Urán Conrado Augusto
Published: March 2018

Este artículo presenta una clasificación de los modelos logísticos que se han desarrollado para dar solución a los problemas de integración, coordinación, sostenibilidad y movilidad que surgen en la distribución urbana de mercancías (DUM). La búsqueda de la mejora y optimización de los procesos en los sistemas de distribución de bienes y servicios en zonas urbanas ha crecido en los últimos años debido al aumento de la población y el incremento de la congestión vehicular, que se dan en las grandes ciudades, dificultando el logro de objetivos comunes entre los diferentes actores en DUM entre otros, por la alta complejidad que se presenta. Para este artículo, se realizó una revisión amplia y actualizada en la literatura científica sobre el tema, posteriormente se realizó una categorización de los modelos utilizados en la DUM y las técnicas utilizadas en estos modelos, por último se presentan las tendencias actuales y posibles soluciones futuras en el modelado de los problemas en esta área de investigación.
Alpha - Skew Pi - Armendariz Rings
Authors: Abduldaim Areej M , Ajaj Ahmed M
Published: March 2018

In this article we introduce a new concept called Alpha-skew Pi-Armendariz rings (Alpha - S Pi - AR)as a generalization of the notion of Alpha-skew Armendariz rings.Another important goal behind studying this class of rings is to employ it in order to design a modern algorithm of an identification scheme according to the evolution of using modern algebra in the applications of the field of cryptography.We investigate general properties of this concept and give examples for illustration. Furthermore, this paperstudy the relationship between this concept and some previous notions related to Alpha-skew Armendariz rings. It clearly presents that every weak Alpha-skew Armendariz ring is Alpha-skew Pi-Armendariz (Alpha-S Pi-AR). Also, thisarticle showsthat the concepts of Alpha-skew Armendariz rings and Alpha-skew Pi- Armendariz rings are equivalent in case R is 2-primal and semiprime ring.Moreover, this paper proves for a semicommutative Alpha-compatible ringR that if R[x;Alpha] is nil-Armendariz, thenR is an Alpha-S Pi-AR. In addition, if R is an Alpha - S Pi -AR, 2-primal and semiprime ring, then N(R[x;Alpha])=N(R)[x;Alpha]. Finally, we look forwardthat Alpha-skew Pi-Armendariz rings (Alpha-S Pi-AR)be more effect (due to their properties) in the field of cryptography than Pi-Armendariz rings, weak Armendariz rings and others.For these properties and characterizations of the introduced concept Alpha-S Pi-AR, we aspire to design a novel algorithm of an identification scheme.
Entrepreneurial Skills Assessment of Expatriates in Abu Dhabi (U.A.E)
Authors: Purohit Sonal , Nanditha Kumar Kallalathil Venglath
Published: March 2018

The main aim of this study is to examine the Expatriate entrepreneurship skills which motivate them to turn into a successful entrepreneur. United Arab Emirates has always welcomed Different expatriates no matter what color, religion, language sex or nationalities. And at present also United Arab Emirates is welcoming all the expatriates warmly and providing very huge opportunities for the Expatriates. United Arab Emirates is a welcoming landscape for startups. United Arab Emirates has a diverse economy which is a very huge opportunity for an entrepreneur. Only very few of the expatriates truly turn into a successful entrepreneur and the rest are still struggling for their living and to turn into an entrepreneur. The concept of Entrepreneurship skills is constantly growing, more over in today’s busy and competitive schedule, proper entrepreneurship skills can contribute hugely to overall prosperity of the individual as well as the economy of United Arab Emirates. Entrepreneurship skills are classified into technical skills, Entrepreneurial skills, Managerial skills, personal maturity skills and emotional skills. An expatriate entrepreneur should equally balance these five skills in order to become successful. Many authors have examined the entrepreneurship skills but up to date no studies has been conducted in expatriate entrepreneurship skills in United Arab Emirates. This may be because of the lack of information’s. The research aims to focus on the Entrepreneurship skills of Expatriate which will turn them to become a successful one and the ways to develop them. The data is obtained from Quantitative collection method by direct interviews, which may be structured, semi- structured or unstructured. This study collected information from primary data and secondary data also. The collected data will be analyzed using statistical package for social science software (SPSS). The study adopted statistical tool Chi Square Test. The study further discusses the ways to improve the skills by Development and training programs. The study also discussed about the training programs, in which models are considered to study into the relationship between the entrepreneurs, entrepreneurship skills, and the market. This study concluded that to become a successful entrepreneur in United Arab Emirates, Expatriates should have a strong entrepreneurship skill which can be developed by undergoing training. The author thus submitting a theoretical study of expatriates entrepreneurship skills required by entrepreneurs to become a successful entrepreneurs in United Arab Emirates .Only if the Entrepreneurial Skills are developed and focused on, the Expatriates can develop into a successful Entrepreneurs. And when that expatriate turns into a successful entrepreneurs it will boost the economy of Abu Dhabi (United Arab Emirates) and provide more opportunities for employment and growth of New Entrepreneurs.
Study of Convert Waste Stabilization Pond Geometry to Treated Wastewater Efficiency, (El- Burullus Lake, Egypt) As a Case Study
Authors: Moustafa Medhat , Hamdy Seif Diaa , Elbarki Walid , Reda Soliman Mohamed
Published: March 2018

The simulation of hydrodynamics water quality in ponds is a developing tool that worth studying in order to understand their internal processes and interactions. Pond design involves several physical, hydrological, geometrical, biological and dynamic variables to provide high hydrodynamic efﬁciency and maximum substrate utilization rates.  Computational fluid dynamic modelling (CFD) allows the combination of these factors to predict the behavior of ponds by using different configurations. In this research mathematical model developed by Danish Hydraulic Institute (DHI), was formulated to simulate WQ parameter. This model was calibrated and used to simulate a scenario to improve study reach water quality in polluted lakes. The study applied on El-Burullus Lake, which is the second largest northern lake in Egypt which belongs to high eutrophic lake type and suffers from several problems. The model was run at steady and variable state with raw wastewater to study the real effect of the polluted drains, which discharge high amount of polluted wastewater into the El-Burullus Lake and know the lake situation after make baffles scenario. The major functions performed by baffles are to reduce hydraulic short-circuiting and to provide a submerged surface which can encourage the growth of attached biomass. Attached biomass growing on the surface of the baffles could increase the total mass of organisms in the pond and thus improve the treatment efficiency and therefore reduce the eutrophication rate in the pond such as (NH3-N, PO4-P and NO3-N). Results showed that there are a significant variance between the rate of NH3-N, PO4-P and NO3-N  before and after make baffles, and the overlap between baffles (L=0.50 baffle) is more efficient than no overlap. In conclusion, waste ponds and be improved easily and economically to be more efficient by making baffles in the lake which can increase the water velocity, avoided the dead zones area and reduce the eutrophic concentration.
Effect of Calcination Temperature on Hydrogen Production via Ethanol Dry Reforming Over Ni/Al2O3 Catalyst
Authors: Samsudeen Kasim , Ahmed Al fatesh , Yahya Mohammad , Ahmed Aidid , Anis Fakeeha
Published: March 2018

Ni/Al2O3 catalysts were prepared by the wet-impregnation method and calcined at different temperatures (500°C, 600°C and 700°C) to obtain NiAl-1, NiAl-2 and NiAl-3 respectively. NiAl-1, NiAl-2, NiAl-3 represent catalysts calcined at 500°C, 600°C and 700°C respectively. The catalysts were characterized using different techniques, XRD, BET and TGA. XRD results revealed the presence of NiO phase on all the catalysts during calcination, however, the presence of spinel, NiAl2O4, was more pronounced on the catalyst calcined at 600°C (i.e. NiAl-2), indicating the existence of strong metal-support interaction. BET results showed that NiAl-1 has the highest surface area of about 190cm2/g.  All the catalysts were tested for ethanol dry reforming in a tubular stainless steel fixed-bed reactor at 700°C and CO2/ethanol ratio of 3 under atmospheric pressure and were evaluated in terms of reactants conversion and selectivity of H2 to see the effect of the different calcination temperatures on the catalysts’ activities. Ethanol conversion was 100% for all the three catalysts and NiAl-2 has the highest CO2 conversion with an average value of about 57%. The three catalysts have almost the same performance in terms of H2 selectivity. The presence of multi-walled carbon nanofibers (MWCNFs) were confirmed on all the catalysts as revealed by the TGA result. The catalyst calcined at 600°C (i.e. NiAl-2) displayed the best relative catalytic activity
Characterization of P(Hema-Gma)-Ida Membrane to Adsorbing Leather Dye
Authors: Aslan Ahmet , Acikel Safiye Meric , Senay Raziye Hilal , Akgol Sinan
Published: March 2018

Different chemical substances and too much water are used during leather production. Therefore, the waste water load of the leather industry is harmful to the environment. One of the pollution source is the production of leather coloring process is a further need to focus on the removal of dye waste waters subject. These water-soluble dyes have a small organic molecular size. Besides the environmental hazards that these dyes cannot be underestimated, they also have harmful effects on human health.

In this study, poly (hydroxyethyl methacrylate-glycidyl methacrylate) p (HEMA-GMA) hydrogel membranes were synthesized by UV polymerization method. The hydrogel synthesized is modified with imino diacetic acid (IDA) and then chelated with trivalent chromium ions. The chelating capacity of the membranes were determined according to the time, pH and concentration parameters. Dynamic swelling test, elemental analysis, ninhydrin analysis and adsorption, desorption and reusability performances of membranes were also determined. As a result of the analyzes, it was understood that the hydrogel membrane had high adsorption capacity. The adsorption capacity of the p (HEMA-GMA) -IDA-Cr (III) hydrogel membrane did not decrease even after 5 desorption. At the end of the fifth cycle, the membrane was found to have a dye-binding capacity of about 92%. According to these results, the reusable property of the membrane also makes it cost effective as well as effective adsorption.
Using mobile device in-store: which implications for retailers?
Authors: Bellini Prof.ssa Silvia , Cardinali Prof.ssa Maria Grazia , Aiolfi Dott. Simone
Published: March 2018

The widespread mobile connectivity has not only changed the way we interact and communicate, but has significantly impacted on consumer decision-making process. Consumers in a retail setting use mobile devices with different purposes: finding information on the web, comparing pricing and purchasing goods and services. Therefore, it becomes crucial to understand how the mobile influences the decision-making process as well as the purchasing decisions in-store. This topic is of great importance in grocery sector since retailers and manufacturers devote many investments in instore marketing activities with the aim to influence consumers’ decisions and stimulate impulse purchases. The rise of the mobile channel has produced disruptive changes in shopping habits designed to gradually reduce the effectiveness of in-store marketing levers in influencing shopping behavior. Manufacturers and retailers are worried that the mobile could potentially distract the customer from the products and services offered within the store. Our research intends to explore the impact of in-store mobile technology use on shopper behavior instore in order to understand its effects on planned versus unplanned purchases. According to our preliminary results, consumers using mobile technology instore make less unplanned items and fail to purchase more planned items. Moreover, the use of mobile technology negatively affects shoppers’ ability to recall in-store stimuli. Our findings are interesting for both retailers and manufacturers who are looking for new ways to better address their marketing efforts and increase consumers’ engagement instore.
Cloud Computing and K-12 School IT Infrastructure in Western Canada: From Challenges to Opportunities
Authors: Holowka Peter
Published: March 2018

This paper is based on the findings of an exhaustive study of all 75 large K-12 districts in Canada's three western-most provinces: British Columbia, Alberta, and Saskatchewan.  This study encompassed over 1.1 million students and a geographical area of 2,258,483 square kilometers.  Facilitating teaching and learning activities for so many students across such a large territory, with diverse provincial regulations, is an impressive feat achieved by the information technology leaders of the K-12 school districts.  Multiple case study analysis, followed by correlation analysis, were used to explore the nature of IT infrastructure and cloud computing use in Western Canada.  A data transformation model mixed methods triangulation design methodology was used.  This paper discusses the strategies used in Western Canada to deliver educational technology resources through to students, teachers, parents, and district staff.  The findings of this study are that cloud computing is the primary IT infrastructure in Western Canadian K-12 education.  All school districts in the three provinces studied use cloud computing for some aspects of their infrastructure.  In instances where cloud computing infrastructure is not used, school-level LAN and server infrastructure is used.  In addition to being an alternative to cloud computing, the rare instances of school-level server use are either to supplement or complement a district’s centralized cloud computing infrastructure, with cloud computing infrastructure existing in parallel.