bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementation of solar photovoltaic array and battery powered enhanced DC-DC converter using B4-inverter fed brushless DC motor drive system for agricultural water pumping applications
Authors: Shanmugam Sathish Kumar , Arumugam Senthilkumar , Palanirajan Gowtham , Ramachandran Meenakumari , Kanagaraj Krishna Kumar
Published: March 2018

The proposed research involves, an implementation of solar photovoltaic array and battery powered enhanced dc-dc converter using B4-inverter fed brushless dc motor drive system for agricultural water pumping applications. It consists of step up and step-down converter, DC-link module. DC-link switching is achieved by reduced ripple voltage which results in improved quality of obtained output power. The Three Port Converter has been proposed and operated in unidirectional and/or bidirectional way simultaneously, for achieving an inherent dual voltage and power flow control. Switch count makes the system more cost effective. An excellent tracking performance under dynamic condition with negligible oscillations around optimum operating point is achieved. Optimally selecting the initial value of duty ratio and its perturbation size offer soft starting of BLDC motor by slowly increasing the DC-link voltage of VSI. A simulation model of solar photovoltaic array and battery powered enhanced DC-DC converter is developed and its performance is analysed for various operating conditions.
Bending vibrations of an orthotropic plate with Braille elements
Authors: Kibirkštis E. , Vaitasius K. , Bakanauskas V. , Eidukynas D. , Venytė I. , Ragulskis K. , Ragulskis L.
Published: March 2018

Purpose of this research is to investigate the vibrations of the orthotropic plate which has Braille elements formed on its surface. Results of investigations are applied in the process of formation of Braille elements. Bending of orthotropic plate is investigated. Supplementary stiffness from the static loading in the plane stress problem caused by centrifugal forces is taken into account. Experimental investigations on a special designed experimental setup were performed. Correspondence of the experimental results with the numerical ones is determined.
Production and characterization of used cooking oil as an alternative fuel: optimization by response surface methodology
Authors: Kumar K. Vinod , Prasad V. V. S.
Published: March 2018

The application of biodiesel in internal combustion engines are increasing at a faster rate, due to the fact that biodiesel posses more oxygen content (Approximately 12 %), which helps in the complete combustion of the fuel. On the other hand the production cost of the biodiesel is high compared to mineral diesel fuel. This may be due to the availability of raw oil and its high initial cost. To minimize the high initial cost of the biodiesel used cooking oil is one of the best solutions. In this paper an attempt was made to analyze the fatty acid compositions and other characteristics of used cooking oil. Optimization techniques like response surface methodology (RSM) was successfully used for better yield estimation with the help of advanced software Design Expert. The optimum values of the variables were: oil to methanol ratio (1:8.37), catalyst concentration (0.74 Wt%), reaction temperature (47.950 °C) and reaction time (54.58 min) at 250 rpm. The predicted response value at these optimum values was 96.15 %. To confirm these optimum values, experimentations were conducted based on the optimum values and achieve the yield of 96 %. This shows that the yield of used cooking oil methyl ester is very near to the optimum value with an error of 0.15 % which may be accepted. This showed that the model correctly explains the influence of the process variables on the production of FAME from used cooking oil (UCOME). And from the gas chromatography results there is equal distribution of saturated and unsaturated fatty acids. 14 % oxygen can be acclaimed in UCOME by elemental analysis. Unsaturated level of fatty acids are observed.
Zakres odpowiedzialności majątkowej małżonków majątkiem wspólnym a zgoda na zaciągnięcie zobowiązania przez współmałżonka
Authors: Olszewski Przemysław
Published: April 2018

Artykuł przedstawia kwestię odpowiedzialności majątkowej małżonków majątkiem wspólnym za zobowiązania powstałe z czynności prawnych w kontekście udzielenia zgody pierwszego małżonka na zaciągnięcie zobowiązania przez drugiego. Analizie pod kątem odpowiedzialności majątkowej małżonków za zobowiązania powstałe z czynności prawnych poddany został artykuł 41 Kodeksu rodzinnego i opiekuńczego. W pracy poruszona została między innymi problematyka wyrażenia zgody małżonka na zaciągnięcie zobowiązania jako elementu determinującego zakres odpowiedzialności majątkowej małżonków pozostających w ustawowym ustroju majątkowym. Na gruncie rozważań dotyczących odpowiedzialności majątkowej małżonków niniejszy artykuł pomoże w odpowiedzi na pytanie, czy obecne regulacje dotyczące rozważanego zagadnienia są właściwe i adekwatnie odnoszą się do wagi normowanej materii mającej wpływ na funkcjonowanie rodziny, ale również na sprawność i pewność obrotu prawnego. Powyższa analiza pozwoli ustalić, czy interesy każdej ze stron są właściwie chronione przez prawo.
Endoscopic Analysis of Wave Propagation with Ag-nanoparticles in Curved Tube Having Permeable Walls
Authors: Irshad Nuzhat , Saleem Anber , Nadeem Sohail , Shahzadi Iqra
Published: April 2018

Objective: The purpose of this article is to analyze the effects of different shaped Agnanoparticles
on peristaltic flow through curved tube with permeable walls.

Method:

In the considered endoscope the inner tube is rigid while outer tube experience a sinusoidal
wave and both tubes make an annulus. Bricks, cylinders and platelets are different shaped Agnanoparticles.
Toroidal coordinate system is used to examine the nature of Ag-nanoparticles mathematically
in the curved tube with viscous fluid. Analysis is performed with the consideration of
low Reynolds number and long wavelength approximation. Perturbation approximation is used to
solve the problem and achieve results for pressure gradient, pressure rise, axial velocity and stream
functions.

Results:

The effects of various parameters such as Grashoff's number, Darcy's number, radius of
the endoscope and amplitude ratio on flow variables have been discussed graphically. The contemporary
investigation has revealed that the temperature profile shows a decrease for larger shape factor
of Ag-nanoparticles. Pressure gradient exhibits higher results with larger Darcy's number. Also
trapped bolus tend to have bigger size for greater shape factor.

Conclusion:

Temperature profile for the nanofluid decreases with the increase in shape factor m of
nanoparticles. The trapping phenomena reveal that the size of inner bolus appears larger for platelet
nanoparticles as compared to brick and cylinder nanoparticles.
Micro-morphological studies in some species of Dichanthium Willemet (Poaceae) from Maharashtra, India
Authors: T. J. Shaikh , Gajanan Potdar Girish
Published: March 2018

The present study was carried out to determine the micro-morphology of some species of Dichanthium Willemet (Poaceae) from Maharashtra. Species of Dichanthium were collected from the different localities of Maharashtra for detailed micro-morphological study. Epidermal studies pertains to epidermal cell size, presence and absence of micro-hairs, papillae, its types of silica bodies of species of Dichanthium. All the 7 studied members show the variation in the types and arrangement of the epidermal cells of leaf.
Micropropagation and conservation of Rheum webbianum collected from Zanaskar valley via tissue culture
Authors: Khan Shagoon Tabin , Kamili Azra N. , R.C. Gupta
Published: March 2018

Rheum webbianum is one of the famous and popular medicinal plant found in Ladakh region. Rheum webbianum Royle is an important medicinal plant belonging to the family Polygonaceae. It is commonly known as ‘Himalayan Rhubarb’ in English, ‘Revandchini’ in Hindi, ‘xu mi da huang’ in Chinese, and ‘Lachhu’ or ‘Chu-rtsa’ in Ladakh. It is native to Asia-Temperate to Asia-Tropical, from China to India, Nepal and Pakistan. In India, it is found in Himachal Pradesh, Jammu and Kashmir, Uttar Pradesh. In Jammu and Kashmir, it is grown on open slopes and shrubberies. Due to overexploitation the Rheum webbianum has become endangered. so, it was conserved by the tissue culture and showed best results on different phytohormones. The plant formation was observed on combination of 6-Benzyl Amino Purine, Thidiazuron, 2, 4-Dichlorophenoxyacetic acid and Indole 3-butyric acid.
Consumer confusion moderates the inertia–purchase intention relationship
Authors: Shiu Jerry Yuwen , Tzeng Shian-Yang
Published: April 2018

We investigated the moderating effect of consumer confusion on the relationship between inertia and purchase intention. Customers (N = 166) were approached randomly with a request to complete our survey as they finished shopping at a convenience store in Taiwan in August 2014.
The results revealed that the purchase intention behavior relied on consumer inertia, which increased when consumers were confused because they were less capable of making rational buying decisions when choosing between retailer brands in the marketplace. In a marketing campaign context, our
findings show that substantial differentiation is crucial for convenience store chains to strengthen the belief system and behavioral routines of their customers, thereby helping the convenience stores to strengthen their brand image, build consumer trust, achieve a competitive advantage,
and capture a greater share of the market in both the short and long term.
Relationships between student engagement and academic achievement: A meta-analysis
Authors: Lei Hao , Cui Yunhuo , Zhou Wenye
Published: April 2018

Most scholars have argued that student engagement positively predicts academic achievement, but some have challenged this view. We sought to resolve this debate by offering conclusive evidence through a meta-analysis of 69 independent studies (196,473 participants). The results revealed
that (a) there was a moderately strong and positive correlation between overall student engagement and academic achievement, and an analysis of the domains of behavioral, emotional, and cognitive engagement showed that almost all had a positive correlation with students' academic achievement;
and (b) a moderator analysis revealed that the relationship between student engagement and academic achievement was influenced by the method of reporting engagement, cultural value, and gender. Furthermore, the relationships of behavioral, emotional, and cognitive engagement with academic
achievement were influenced by reporting method for engagement, cultural value, or gender.
The The Implementation of CTL Approach in Teaching Speaking at College Students Akademi Kebidanan Keluarga Bunda Jambi
Authors: Rahmah Rahmah Rahmah
Published: March 2018

The study aimed at describing the use of contextual teaching and learning on students’ speaking skills. Apart from analyzing the students’ problems, it also looked at improvement in the students’ speaking skills through the use of contextual teaching and learning. The research involved of the third semester students at KeluargaBunda Jambi Midwifery Academy academic year 2015/2016. The students were 50 students consists of 25 as experimental group and 25 students as control group. This was an experimental research, conducted in experimental group and control group. Each group consists of five meeting. The material for the first meeting was about examination of pregnancy. The second meeting was about examination of Leopold. The third meeting was about baby’s care. The fourth meeting was about breast self-exam. And the last meeting was about infuse. In collecting the data, the researcher used observation and recording. The findings show that there was a significant effect between students who taught using CTL and who taught by using conventional teaching. The test result of experimental group after being analyzed was 0.023 < 0.05. The analysis was conducted the mean score of each category both pretest and posttestin experimental group was higher than control group. Therefore, it can be concluded that contextual teaching and learning can help teacher to teach the students easier and students are easier to understand the material.
ANALISIS PENETAPAN KADAR NIPAGIN DALAM SEDIAAN BODY LOTION TIE (TANPA IZIN EDAR) YANG BEREDAR DI PASAR TRADISIONAL KOTA PALU
Authors: Mandasari Vini , Anam Syariful , Yuyun Yonelian
Published: April 2018

This study aims to determine the levels of nipagin as preservative in body lotions which have no marketing authorization (MA). Each sample was taken from 4 traditional markets located in Palu City. The assay of nipagin in the body lotions was done by using ultraviolet (UV) at wavelength of 257 nm. From 8 different samples, 5 of them contain nipagin of which levels are as follows: A1 = 0.232%; A2 = 0.229%; B1 = 0.124%; B2 = 0.120%; C1 = 0.120%; C2 = 0.117%; and D1 = 0.267%; D2 = 0.273%; and F1 = 0.213%; and F2 = 0.215%. Based on the results obtained, those body lotions that have no marketing authorization meet the requirement of nipagin’s preservative levels according to Analitical Method of National Center for Drug and Food Testing, in which the allowed levels of nipagin for body lotion is 0.4%.Keywords: Body Lotion, Nipagin, Ultraviolet Spectrophotometer.
SINTESIS HIDROKSIAPATIT DARI TULANG SAPI DENGAN METODE BASAH PADA BERBAGAI WAKTU PENGADUKAN DAN SUHU SINTERING
Authors: Yuliana Reflin , Rahim Erwin Abdul , Hardi Jaya
Published: April 2018

Synthesis of hydroxyapatite (HAp) can be obtained from a reaction between calcium of cow bones and phosphate under wet method. Completely Random Design (CRD) was used in this research with three levels of stirring time and four levels of sintering temperature i.e. 60, 90, 120 minutes and 800oC, 850oC, 900oC, 950oC, respectively. The result showed that synthesis reaction at the sintering temperature of 850oC for 120 minutes were the best conditions to produce HAp. The yield of HAp product in those conditions was 48,5%. XRD spectrum of HAp had the highest intensity of 1000 at a 2Ɵ angel of 31.78o.Keywords: Hydroxyapatite, Stirring Time, Sintering Temperature, Cow Bone
KAJIAN KEMAMPUAN AKAR TANAMAN KANGKUNG DARAT (Ipomoea reptans Poir) DALAM MENYERAP LOGAM MERKURI PADA TANAH TERCEMAR
Authors: Khairuddin Khairuddin , Sikanna Rismawaty , Sabaruddin Sabaruddin
Published: April 2018

The Research has done on assessment ability plants of kale land root’s (Ipomoea reptans Poir) in absorbing metallic of mercury (Hg) on polluted soil. Methods of assessment done by complete randomized design (CRD) to determine the influence of plant age and concentration of the planting medium to large concentrations absorbed of mercury in plant roots. Age of planting consists of 4 harvest time, it is 2, 3, 4, and 5 weeks. The concentration of the cultivation medium is 25 ppm, 50 ppm, 75 ppm dan 100 ppm. The results of analysis variance test for the effect of cultivation age indicate the real difference (F calculation > F 5 %), where the test results of BNT 0,05 obtained in the third week is the maximum age of planting. The influence of concentration on analysis variance test and LSD analysis indicate the real difference, where F calculation > F 1%.Keywords: Absorption, Metal Mercury, Land Plants kale, Age of planting, growing media concentration.
Simplified calculation method of annual incoming solar energy on tilted and oriented surfaces for the Carpathian basin
Authors: Horvath Miklos , Csoknyai Tamas
Published: April 2018

The present paper aims at introducing a simplified method of manual calculation of annual incoming solar energy on any tilted and oriented surface using annual horizontal global radiation or sunshine duration hours as input. The proposed simplified formula is developed for the Carpathian basin and can be used in eight countries with a total geographical area of 483 495 km2. In prospect, a similar formula can be determined for other regions applying the presented methodology. In our work we used the following: the open access CarpatClim database as in-put data, and the Liu-Jordan model as detailed method that was validated with measurement data. The simplified method was developed and validated by use of various statistical approaches and methods
Support vector machine for the prediction of heating energy use
Authors: Sretenovic Aleksandra , Jovanovic Radisa , Novakovic Vojislav , Nord Natasa , Zivkovic Branislav
Published: April 2018

Prediction of a building energy use for heating is very important for adequate energy planning. In this paper the daily district heating use of one university campus was predicted using the support vector machine model. Support vector machine is the artificial intelligence method that has recently proved that it can achieve comparable, or even better prediction results than the much more used artificial neural networks. The proposed model was trained and tested on the real, measured data. The model accuracy was compared with the results of the previously published models (various neural networks and their ensembles) on the same database. The results showed that the support vector machine model can achieve better results than the individual neural networks, but also better than the conventional and multistage ensembles. It is expected that this theoretically well-known methodology finds wider application, especially in prediction tasks.
Theory and smart practice in the reduction of negative effects of urban heat island
Authors: Stevovic Svetlana , Mirjanic Dragoljub , Djuric Nedjo
Published: April 2018

Urban environment could be considered as a complex biotechnical system. Multidisciplinary, interdisciplinary, and intradisciplinary analyses are required in order to achieve sustainable urban communities and healthier cities, especially in the era of climate changes. The main goal of this paper is to investigate, select, and review the theories and smart practices in negative effects of urban areas heat problems reduction and to define the objective function of the issue. The objective function could be treated as the force, with magnitude and direction of influence that operates in a certain space, which is considered to control certain factors and parameters, including time as a dimension. Spatial and temporal gradient of canyon effect are defined with nodes canyon effects interaction. The thermal islands are analyzed by its volume, sources of heat, thermal gradient, with the goal to select strategies to reduce the negative effects of heat islands. Positive smart practice in the world is discussed. The purpose of this study is to find, by literature review and by holistic methodological approach application, better practice and adequate solutions for building, energy, water, and carbon balance in urban environment. The results are expected in the movement towards the blue and green cities.
Health monitoring modular panel: Interface design and evaluation
Authors: Vujovic Milica , Ristanovic Milan , Milos Marko , Perales-López Francisco
Published: April 2018

In this paper we present a conceptual solution of modular panel for measuring health parameters of the elderly. The conceptual solution was followed by a study that analyzed the design and evaluated interface of the system. Modular panel contains sensors, processing unit, and interface enabling data acquisition and communication between the user and the medical staff. Positioning of the panel within the residential unit was determined by the categories of actions which it should provide and functional areas of typical housing unit. Interface design is based on a specific type of users and is on the basis of the type of data that should be collected and displayed. Evaluation of interface is conducted by using two user groups, where the first is made up of people older than 60 years and represents the interest group of the study, while the second group consisted of people younger than 60 years as the control group. The collected data were analyzed and the results indicate that the simplicity of the interface suits good to the users. Elderly users need more time to conduct certain commands, but most of them understood interface completely. The limitations of the system, such as lack of information provided for the users, will be considered in the future work.
Modeling and simulation of natural convection flow along a rough surface of sinusoidal nature with variable heat flux: Using Keller box scheme
Authors: Ghaffari Abuzar , Javed Tariq , Mustafa Irfan , Labropulu Fotini
Published: April 2018

In this study, natural convection flow along a vertical wavy surface has been investigated with variable heat flux. The governing equations are transformed into dimensionless PDE by using the non-dimensional variables and then solved numerically by using an implicit finite difference scheme known as Keller Box method. The effects of the parameters amplitude of the wavy surface, ?, exponent of the variable heat flux, m, and Prandtl number on the local skin friction coefficient and local Nusselt number are shown graphically. It is found that for the negative value of exponent of the variable heat flux, m, the local skin friction coefficient increases and Nusselt number decreases but the opposite behavior is observed for the positive values of m. The comparison of limiting case with the previous study is shown through table and it is found that the solution obtained is in excellent agreement with the previous studies.
Combustion of lycopodium particles in random media: Analytical model and predicting the effect of heat loss and Lewis number
Authors: Bidabadi Mehdi , Harati Mohammadali
Published: April 2018

In this paper, a new analytical model is proposed to model combustion of micro organic dust particles. In contrast with previous studies, random combustion of lycopodium particles and analyze the effect of heat loss and different Lewis number on the combustion properties is taken which has not be considered before this. It is assumed that flame structure is consisted of a preheat-vaporization zone, a reaction zone and a post flame zone. Then, different Lewis numbers are applied in governing equations. To perform the random model of particle combustion, source term in energy equation has been modeled by means of random states for volatilization of particles in preheat zone. Therefore, different groups which contains random amount of particles and sense a random temperature in the preheat zone has been considered. In this analysis, the impact of random combustion, Lewis number, and particles diameter on the combustion properties of lycopodium particles such as burning velocity, flame temperature and effective equivalence ratio are studied. Consequently, comparison made between results obtained from random model by experimental data, indicated that the random model have a better agreement with experimental data than non-random model.
Effect of radiation on the flow structure and heat transfer in a 2-D gray medium
Authors: Rachedi Nesrine , Bouafia Madiha , Guellal Messaoud , Hamimid Saber
Published: April 2018

A numerical study of combined natural convection and radiation in a square cavity filled with a gray non-scattering semi-transparent fluid is conducted. The horizontal walls are adiabatic and the vertical are differentially heated. Convection is treated by the finite volumes approach and the discrete ordinates method is used to solve radiative transfer equation using S6 order of angular quadrature. Representative results illustrating the effects of the Rayleigh number, the optical thickness and the Planck number on the flow and temperature distribution are reported. In addition, the results in terms of the average Nusselt number obtained for various parametric conditions show that radiation modifies significantly the thermal behavior of the fluid within the enclosure.
Plan de acción tutorial para evitar el plagio en materias de formación básica / Tutorial action plan to avoid plagiarism in basic training subjects
Authors: Ruiz Ledesma Elena Fabiola
Published: April 2018

En el presente artículo se muestra el desarrollo de un Plan Tutorial que permitió identificar y proponer estrategias que ayuden a los estudiantes de una de las Unidades Académicas del Instituto Politécnico Nacional (IPN), a evitar que incurran en prácticas de plagio tanto de trabajos académicos como de la resolución de problemas y ejercicios de áreas de formación básica.El estudio se apoya en  el paradigma sociocrítico pues se tuvo como finalidad  el que los estudiantes reflexionaran y tomaran conciencia de lo nocivo que es el incurrir en prácticas de plagio.Se trabajó con 60 estudiantes quienes cursaban dos unidades de aprendizaje de formación básica (Cálculo Aplicado y Probabilidad y Estadística). Para la toma de decisiones en el desarrollo del plan de acción fue indispensable conocer el perfil de los estudiantes, mismo que se pudo identificar mediante la fase de diagnóstico. Se muestran algunos otros factores que intervienen en la problemática considerada, factores de tipo  epistemológico, social, demográfico, didáctico, entre otros. Se emplearon instrumentos metodológicos como lo es el cuestionario y la entrevista, para recopilar información que permitió  realizar un análisis cuantitativo para determinar categorías  que condujeron a la realización de un análisis cualitativo, llegando a la determinación de estrategias que son sugeridas a los estudiantes como caminos que pueden seguir para dejar de realizar prácticas de plagio y formas que pueden ayudarles a mejorar su aprovechamiento académico en las asignaturas de matemáticas.
EFEKTIVITAS BUBUK BIJI PEPAYA (Carica Papaya Linnaeaus) SEBAGAI LARVASIDA ALAMI TERHADAP KEMATIAN LARVA AEDES AEGYPTY TAHUN 2015
Authors: Iskandar Iwan , Horiza Hevi , Fauzi Nanang
Published: April 2018

Papaya seeds are excellent to be used as a repellent larvae of Aedes aegypti because of the toxins contained in papaya seeds called alkaloid karpaina. The research objective was to determine the effectiveness of papaya seeds powder as Aedes aegypti larvicides. This type of research is True Experiment with Posttest Only Control Group research design, using five treatments (4 grams, 8 grams, 12 grams, 16 grams and 20 grams) and one control. Objects that are used as many as 600 larvaes of Aedes aegypti. If the papaya seeds powder in a simple processsuch as drying and grinding. Each treatment contains 50 larvaes and by doing 2 times repeatedly. The results of data analysis on the number of dead larvaes at a dose trending dead at the lowest possible total percentage of 22% at a dose of 4 grams and the highest percentage of 97% at a dose of 20 grams. The analysis result of one-way ANOVA for the number of differences in the number of dead larvaes, with the value obtained sig. = 0.000, so that ? <? (0.05) means that there is a significant influence on differences in doses of papaya seeds powder solution used against the death of Aedes aegypti larvaes. The control of Aedes aegypti larvaes using papaya seeds powder can be done by puttingthe powder of papaya seeds as much as 20 grams per 10 liters of water for 24 hours of treatment.
ANALISIS RESIDU KLORPIRIFOS DALAM SAYURAN KUBIS DENGAN METODE HPLC DI BEBERAPA PASAR TRADISIONAL DI SULAWESI UTARA
Authors: Saiya Abdon
Published: April 2018

One type of pesticide that is widely used is a group of organophosphates with chlorpyrifos as the active ingredients, because it has more favorable characteristics such as easy to decompose and short persistence time. However, the use of pesticides in addition to leaving residues that can cause environmental pollution, also cause disruption to human health and inhibit trade. Therefore, it is necessary to monitor the use of pesticides through the fulfillment of the maximum residual limit (MRL) so as to ensure food safety by limiting pesticide residue levels on agricultural products. The purpose of this study was to determine the residual levels of chlorpyrifos in cabbage vegetables with previously optimized and validated HPLC methods. The sample of this research is vegetable cabbage taken from several traditional markets in North Sulawesi. Based on the results of the study, it was found that chlorpyrifos were detected in all samples analyzed, although the levels were still below the specified MRL value.  The results of this study can be a consideration for consumers and relevant agencies in North Sulawesi to more frequently monitor and evaluate the existence and use of these compounds.
APLIKASI SENSOR PVDF UNTUK PENGUKURAN PERGESERAN SUDUT
Authors: Hartono Ambran
Published: April 2018

In this paper we will present the results of the study at the application of Polyvinylidene Fluoride (PVDF) sensors to determine the value of angular shift. In the study carried out the loading on the PVDF sensor so that the PVDF film on the sensor changes in the form of angular shift. For every angle shift that occurs then the sensor will detect in the form of output current on the display. The sensor loading is done for the angle change ranges from 100 to 800. From the research results show that the sensor output shows a mathematical relationship between the magnitude of the angular shift with the resulting current. The mathematical relationship is expressed in terms of exponential equations. This clearly indicates that this PVDF sensor can work well in detecting large angular changes.
Penerapan Pendekatan dan Metode yang Relevan dalam Pembelajaran Tari di SMP Negeri 5 Kota Solok
Authors: Indrayuda Indrayuda
Published: April 2018

This article discusses about application of approaches and method in dance learning regarded to be relevance with the situation and condition in the SMPN 5 Solok. This article is going to answer many problems existing in the school faced by the dance teachers of West Sumatera. The problem is that the teachers are often not able to catch the appropriate method in the application of dance learning as well as to measure the students’ creativity correctly. This case is caused by the in appropriate approach and method of learning used by the teachers and less of facilities available. Related to that problem, the dance teachers of SMPN 5 Solok city try to answer it through applying approach and method that they consider to be relevance to the condition and situation of the school. The teachers use persuasive, cooperative, and motivated approach to analyze the problem. The learning method used in this study is the combination, of exploration and appreciation method, and then this approach is finally done effectively and efficiently in the school. Keywords: The dance teachers, strategy and the dance learning method.
Peran Masyarakat Lokal dalam Usaha Pelestarian Naskah-Naskah Kuno Paseban
Authors: Primadesi Yona
Published: April 2018

This study aims to determine the role of local communities in conservation efforts of Paseban manuscripts. This research uses dominant less-dominant design, which combines quantitative and qualitative approaches in one study. The data were obtained from field observations, interviews, and library studies. The results are the conservation efforts undertaken on manuscripts in surau Paseban were limited to activities to save the script and clean manuscripts from dust and dirt. There were no special conservation activities on these texts, and the activities tended to damage the manuscript. The recommendation is the community is more responsive to the presence and the values of the manuscripts so that the joint conservation activities can be done optimally. In addition, special attention from the government for handling the manuscripts is needed. Key words: conservative manuscripts, surau Paseban, conservation efforts
Makna Simbolis Sumbang Duo Baleh dalam Seni Pertunjukan Wanita Minangkabau
Authors: Astuti Fuji
Published: April 2018

The limitation of women’s opportunities in the activities of the performing arts in the past were opportunities associated with the regulation norms in the foundations of Minangkabau customs. Within the social order, Minangkabau custom placed a woman as a person having the autonomy known as Bundo Kanduang, a perfect woman that should be the model for her descendants, the light in the village, the one who can keep the beauty of the country. Because of this, the women’s participation was limited around Rumah Gadang. In Line with the development of the era, the improvement on formal and non-formal education makes the Minangkabau women aware their limitation to participate in the world of performance arts. Nowadays there is a great opportunity for the women to determine their own choices in the performance arts. This opportunity has resulted in the more dominant presence of woman in the Minangkabau performing arts. Particularly in the world of dancing, the initiators of dance creation art have produced the dances with both the masculine and feminine moves which can be performed by Minangkabau women in the world of performing arts. The most interesting thing is there is a widely open opportunity for the women make their own choices. However, all the movements and behaviors of the Minangkabau women should be based on the social norms that are set in the philosophy of sumbang duo baleh and Alua jo patuik Raso jo pareso. Raso dibao naiak, pareso dibawo turun. Keywords: symbolic meaning, sumbang duo baleh, performing arts
Combining Form and Function in Language Teaching: Teaching Grammar Communicatively
Authors: Marzuki Doni
Published: April 2018

perdebatan mengenai metode terbaik untuk diterapkan dalam pembelajaran bahasa, terutama di dalam konteks bahasa Inggris sebagai bahasa kedua dan bahasa asing, telah berlangsung selama sekitar empat puluh tahun. Kelompok pertama adalah pendukung metode pengajaran bahasa yang berfokus pada bentuk, sedangkan kelompok kedua adalah mereka yang mendukung metode yang berfokus pada fungsi. Dalam praktik pembelajaran, metode yang berfokus pada bentuk (form-focused) memandang pembelajaran gramatika dan semua aturannya sebagai syarat mutlak, sedangkan metode yang berfokus pada fungsi (function-focused) percaya bahwa pemerolehan keterampilan komunikatif yang baik dalam bahasa target adalah tujuan akhir dalam pembelajaran bahasa kedua. Kedua belah pihak mengklaim bahwa metode yang mereka gunakan dalam praktik pembelajaran sebagai cara terbaik untuk membuat peserta didik memperoleh bahasa target dengan baik. Terlepas dari keuntungan yang ditawarkan oleh masing-masing metode, beberapa peneliti  menemukan bahwa setiap metode sebenarnya tidak bebas dari kelemahan. Dengan menyadari kelemahan dari setiap metode, tampaknya rasional untuk tidak berdiri di satu metode saja dalam praktik pembelajaran bahasa. Mungkin dengan menggabungkan dua metode dalam praktik pembelajaran, guru bahasa akan mendapatkan keuntungan dan menghilangkan kelemahan yang dimiliki oleh masing-masing metode. Sebuah metode baru dapat dibentuk dengan menerapkan pembelajaran formal dalam kegiatan komunikatif . Kata kunci: pembelajaran bahasa, metode berfokus pada bentuk, metode berfokus pada fungsi
”Ojigi” sebagai Alat Komunikasi
Authors: Roza Ilvan
Published: April 2018

Every country in the world has its own culture that characterizes each nation. One of the cultures of every nation is the way to have the social interaction through verbal and non-verbal communication. Verbal communication can be in forms of greetings and so forth, while the non-verbal communication can be signaled by using the scattering; wave of the hand, eye blink, bow weight and so forth. This article discusses the Japanese culture that initiates communications with bowing, known as Ojigi. Keywords: ojigi, means, communications, social, interaction, social interaction
Peningkatan Keterampilan Menulis Naskah Drama melalui Pendekatan Pembelajaran Kontekstual Siswa Kelas VIII RSBI-1 SMP N 12 Padang
Authors: . Yurnelis
Published: April 2018

The background of this research is the low ability of the students in writing the role play text, in which they can not pass the minimum mastery criterion (KKM). The type of the research is Classroom Action Research which is employed in two (2) cycles. The act of the teaching and learning process is done by using CTL approach. Each cycle is done by integrating some CTL components and observed by the observers. The steps of the research are planning, doing, observation and reflection. The data are qualitative and quantitative. Qualitative data are collected from the observation and filed note while the quantitative data are collected from the result of students performance test. The research resuts shows that there is an increasing of student’s activity during teaching and learning processes after finishing the first and the second cycles. Furthermore, there is an increasing of students achievement result in writing the role play text from 68,38 in pre-cycle, which indicates that  40% of the students passed the KKM. Furthermore, the students achievement increases into 73,75 on the first cycle in which 64 % of students passed the KKM. Moreover, the second cycle shows that the average students’ grade is 88,25. This  grade means that 100% of the students pass the minimum mastery criteria (KKM). Keywords: writing, role play text, contextual teaching approach
Menggali dan Mengembangkan Potensi Kreativitas Seni pada Anak Usia Dini
Authors: Astuti Fuji
Published: April 2018

Kehadiran anak usia dini dalam aktivitas tari tumbuh dengan pesat. Hal itu tampak baik dalam pendikan formal maupun nonformal. Namun yang sangat memprihatinkan tidak ada perbedaan materi yang ditampilkan antara orang dewasa dengan anak-anak, sehingga apa yang disajikan tidak maksimal. Hal ini terjadi karena lagu atau gerak tari yang ditampilkan tidak sesuai dengan tingkat kemampuan anak, misalnya wilayah suara atau gerak anak sesuai dengan kapasitas struktur anatomi, yang pada gilirannya apa yang hendak disampaikan tidak komunikatif. Untuk mengatasi kendala tersebut diperlukan penggalian dan pengembangan potensi kreatif yang dimulai dari usia dini. Dapat di pastikan jika anak telah diasah dan diasuh dari usia dini untuk memaksimalkan kemampuan potensi geraknnya maka akan lahirlah sejumlah penari yang professional yang pada giliranya akan meujudkan penari-penari yang fungsional. Untuk mengatasi fenomena di atas diperlukan kepedulian dari berbagai pihak, misalnya koreografer harus memproduksi tari yang sesuai dengan tingkat kesulitan gerak yang mampu dicapai oleh anak-anak. Para seniman seni yang bertindak sebagai instruktur harus mempertimbangkan materi yang sesuai dengan dunia anak-anak agar mereka dapat menampilkannya lebih luwes dan fleksibel. Di sisi lain kepedulian pengamat seni seperti Taman Budaya, Dewan Kesenian juga sangat dibutuhkan dalam rangka memberi motivasi dan pengontrolan untuk menjaga kualitas baik lagu ataupun gerak tari yang ditampilkan. Key Word: Potensi Kreativ, Pendidikan Usia Dini.koreografer, seniman seni, pengamat seni
Idiom-idiom Estetik Pastiche, Parodi, Kitsch, Camp, dan Skizofrenia dalam Karya Teater Postmodern Indonesia Jalan Lurus
Authors: Syafril Syafril
Published: April 2018

Theater can be viewed as the strongest in denying post modernization. It also can be found in Indonesian postmodernism theater, especially through pastiche aesthetic idiom, parody, kitsch, camp, and schizophrenia which reveal and deconstruct the previous art theater modernization as well as the high culture modernization, or modernism itself. The purpose of this paper is to show how deconstructionist idiom occurs in the “Jalan Lurus” which can be viewed as one of Indonesian postmodern theaters. Keywords: theater, postmodern, pastiche, parody, kitsch camp, schizophrenia.
THE IMPLEMENTATION OF WRITING ASSESSMENT BASED ON KTSP (SCHOOL-BASED CURRICULUM) AT SMAN 2 SOLOK
Authors: Karyawetti Yunita
Published: April 2018

The aim of the research is to describe how the English teachers of SMAN 2 Solok implement School-Based Curriculum in writing assessment which consists of Genre - Based Assessment (portfolio), Curriculum - Oriented Assessment (Competence - Based Assessment and Process - Oriented Assessment), and criteria of writing assessment (social function, generic structure, and language features). Beside that this research is also aimed to find out the problems they face in assessing the students’ writing. The research is descriptive which applied qualitative method. The data were collected by interviewing, observing the process, and examining the documentation of the informants (six informants which two of them were key informants). The researcher found that (1) three English teachers have implemented portfolio assessment, (2) all English teachers have implemented competence-based assessment, (3) three English teachers have implemented process-oriented assessment, and (4) all English teachers have considered criteria in writing assessment although two of them still did not consider language features of the students’ writing.
PELAKSANAAN PEMBELAJARAN BAHASA INGGRIS DI SEKOLAH DASAR KOTA PADANG
Authors: Radjab Desmawati , Syarif Hermawati
Published: April 2018

This article discusses and interpretes the findings of the study of the implementation of English instruction at Elementary Schools of Padang City. Through observation, questionnaire, informal interview, and documentation, the data were collected from the sample of state schools which offer English as the local subject. Using descriptive analysis technique, it was found that the implementation of the English instructional strategies did not truly follow the directions designed for the elementary school students for the teachers did not have definitive curriculum. Thus, the instruction was not much in a good track, that is (1) oral language skills tended to be ignored; (2) the instruction for three grades of the students (3, 4, and 5) was seen overlapped for they used the same book as the only source of the teaching materials; (3) the instructional assessment was conducted in all kinds, such as process evaluation, port-folio, formative and summative test. However, it was mostly on the written form, different from the objective of English learning at the elementary schools; and (4) there were problems faced in offering the subject, namely, the teachers were not fully given the opportunity to improve their English, and the status of English as local subject makes the subject ignored by the headmasters of schools.
PERBEDAAN BAHASA SISWA LAKI-LAKI DAN SISWA PEREMPUAN: SEBUAH STUDI KASUS DI KELAS V SDN 09 AIR TAWAR BARAT PADANG SUMATERA BARAT
Authors: Amri Zul
Published: April 2018

Male and female are said to speak differently in any communities. Many studies have made use of oral discourse as the source of the data and it is very rare found that the studies make use of written discources. This study is based on the students writing entitled “Experience during Vacation”. They are the fifth grade of 09 Elementary School Air Tawar Barat Padang. After analyzing their writings, it is found that female students produce more words, more verbs, more sentences (verbal or nominal and simple or embedded) compared to male students. In addition, female students produce less mistakes in using capital letter and other mechanical matters. The male students, on the other hand, produce less words, less verbs, less sentences (verbal or nominal and simple or embedded) compared to female students. In addition, male students produce more mistakes in using capital letter and other mechanical matters. One interesting thing is that even though male students produce less verbs in numbers, they have more various verbs compared to female students. Many female students use the same verbs as others and some use the same verbs repeatedly in their writings. The male students did not repeat the use of the same words very often.
DUNIA ABSURD DAN PERLAWANAN KELAS PADA DRAMA DAG-DIG-DUG KARYA PUTU WIJAYA
Authors: Yasa I Nyoman
Published: April 2018

Research on drama in Indonesia is an effort to apply and express the theory in Indonesia. Naturally a theory existence from research accumulation to applied skills. It is hoped that this research can accumulate the science, mainly drama. The term of absurd was used by Martin Esslin for kind of theater that used the failure of language as main of communication. Besides, this term is popularized by Eugene Ionesco. He is a writer of absurd theater. Many of his drama already translated and performed in Indonesia. The data that already collected is analyzed by using the concept of absurdity to reveal the absurdity in Dag-Dig-Dug drama. In other side, the concept of class from Karl Marx is used to comment the domination and class resistance that are taken from Dag-Dig-Dug drama. Dag-Dig-Dug shows the social problems, mainly domination and hegemony of powerful person toward proletarian people. The domination and hegemony are in form of physics and psychology.
MASYARAKAT MINANGKABAU PASCA-PRRI: Dalam cerpen Ketika Jendral Pulang karya Khairul Jasmi
Authors: Ronidin Ronidin
Published: April 2018

This article describes the influence of PRRI events (Revolutionary Government of the Republic of Indonesia) on the life of the people of West Sumatra (Minangkabau) in the short story "Ketika Jendral Pulang"  by Khairul Jasmi. The analysis was done by using literary of sociology. The results show that the short story "Ketika Jendral Pulang" is sociologically reflects life in post-PRRI Minangkabau generation experiencing a difficult phase in life. They become timid generation, low self-esteem, and pragmatic. The young people who go wander Minangkabau rename or exchange their identities, no longer as a son of the Minangkabau. This short story also describes the life of the Minangkabau generation today as the generation that was educated and raised by television. Their lives are very familiar with the various trappings of televised violence.
MENINGKATKAN KEMAMPUAN ‘GRAMMAR’ MAHASISWA JURUSAN BAHASA INGGRIS FBS UNP SECARA LISAN DAN TULISAN
Authors: Isyam Amri , Zainil Yetty
Published: April 2018

English Department Students as EFL learners must be able to use correct grammar of English well either in oral or written form; nevertheless, based on a prelimenary observation many of the English Department Students of Faculty of Languages, Letters and Arts of State University of Padang committed grammatical deviations when they communicated in English. This article aims at describing the action research about using OHP/LCDP, Role Plays/Language Games, and written exercises as the efforts to improve Grammatical Ability of the English Department Students. The research was carried out in two cycles, and the subjects were a class of education program consisting of thirty students, who were taking Structure 2 at that time. The findings of the research showed that using OHP/LCDP as media of teaching, Role Play/Language Games as oral exercises, and asking the subjects to do two kinds of written exercises (homework from their handbook as usual and their own sentences/paragraphs as assignments) in teaching Structure 2 communicatively improved the students’ grammatical ability either in oral or written forms much more significantly. Their grammatically-oral ability increased by 14.5 points/73.5% (from 21.8 to 36.3) whereas their grammatically-written ability increased by 13.1 points/82.3% (from 19.1 to 32.2) on the average. Thus, the research questions were answered positively, and the hyphotheses were proven.
REFUSAL STRATEGIES USED BY MALE AND FEMALE SELLERS AT PASAR RAYA PADANG
Authors: Rosa Rusdi Noor
Published: April 2018

This article is aimed at finding different strategies used by male and female sellers while refusing the buyers’ offer. This study was done by using descriptive research design in which the data related to the object of the study were collected to answer the research question. The data of this study are refusals in the bargaining process between sellers and buyers that took place in Pasar Raya Padang. The finding of the research shows that male sellers used non performative statement strategy most frequently which implicitly indicated that they tended to refuse the buyers’ offer in a direct way. Female sellers, on the other hand, used excuse, reason, and explanation strategy most frequently which indicated that they preferred to refuse their buyers’ offer in an indirect way.