bluuebunny/crossref_metadata_2025 huggingface dataset:
Ortaokul Öğretmenlerinin Algılarına Göre Okul Etkililiği ile Kolaylaştırıcı Okul Yapısı ve Akademik İyimserlik Arasındaki İlişki
Authors: ÇALIK Temel , TEPE Nagihan
Published: July 2019

Bu araştırmanın amacı ortaokul öğretmenlerinin kolaylaştırıcı okul yapısı, akademik iyimserlik ve okul etkililiği algıları arasındaki ilişkileri inceleyerek, öğretmenlerin kolaylaştırıcı okul yapısı ve akademik iyimserlik algılarının okul etkililiği algıları üzerindeki yordayıcılık etkisini belirlemektir. Katılımcılar; 589’u kadın ve 562’si erkek olmak üzere 1151 ortaokul öğretmeninden oluşmaktadır. Araştırma ilişkisel tarama modelinin kullanıldığı nicel bir araştırmadır. Araştırma sonuçlarına göre öğretmenlerin okul yapısı, akademik iyimserlik ve okul etkililiği düzeyleri arasında pozitif yönlü ve anlamlı ilişkiler tespit edilmiştir. Ayıca öğretmenlerin okul yapısı ve akademik iyimserlik algılarının, okul etkililiği algıları üzerinde anlamlı yordayıcılar olduğu sonucuna ulaşılmıştır.
Change in the Level of Justification in Problem Solving Over Time
Authors: AKKUŞ Recai
Published: July 2019

Students’ actions in a mathematical context contain some sort of proving in the forms of justification, explanation, verification, etc. Each form has levels in terms of the quality that adds to mathematical understanding of students. In this study, 58 teacher candidates’ problem solving processes were analyzed across time in terms of the level of justification. The key findings from this study were as the use of external justifications decreased over time, that of internal increased especially for the first five weeks and the use of schematic justifications was fluctuated. The findings suggest that through teacher feedback and structured writing with prompted questions, students can develop an awareness of rigorous mathematical justifications over time.
Ortaokul Düzeyinde Geometriye Yönelik Bir Tutum Ölçeğinin Geliştirilmesi
Authors: ÖZDİŞÇİ Selda , KATRANCI Yasemin
Published: July 2019

Bu çalışmanın amacı ortaokul düzeyinde öğrenim görmekte olan
öğrencilerin geometriye yönelik tutumlarını belirlemek için bir ölçeğin
geliştirilmesidir. Bu amaçla çalışma tarama modeline göre tasarlanmıştır.
Çalışma grubunun belirlenmesinde uygun/kazara örnekleme yöntemi ele alınmış ve
çalışma İzmir ilindeki bir devlet ortaokulunda gerçekleştirilmiştir. Çalışmaya
bu ortaokulda öğrenim görmekte olan 640 ortaokul öğrencisi katılmıştır. Ölçeğin
faktör yapısının belirlenmesi için açımlayıcı faktör analizi ve ortaya konan
yapının sınanması amacıyla doğrulayıcı faktör analizi yapılmıştır. Madde
analizleri gerçekleştirilerek, iç tutarlılığın belirlenmesi için de Cronbach alfa
güvenirlik analizleri yapılmıştır. Açımlayıcı faktör analizi sonucunda ölçeğin
üç faktörden meydana geldiği belirlenmiştir. Bu faktörler; Olumlu tutumlar, Olumsuz
tutumlar ve Teknolojidir. Doğrulayıcı faktör analizi sonuçlarına göre ölçeğin
mükemmel derecede uyum sergilediği belirlenmiştir. Madde analizleri sonucunda
ise ölçekte yer alan maddelerin yeterince ayırt edici, yüksek geçerliğe sahip
ve aynı yapıyı ölçen maddeler oldukları ortaya konmuştur. Güvenirlik analizleri
ile ölçek ve ölçek alt faktörlerinin yeterince güvenilir oldukları tespit
edilmiştir. Sonuçta geliştirilen ölçeğin ortaokul öğrencilerinin geometriye
yönelik tutumlarının belirlenmesinde kullanılabilecek geçerli ve güvenilir bir
araç olduğu ortaya çıkmıştır.
Üniversite Öğrencilerinin Psikolojik Yardım Alma ve Romantik İlişki Durumunun Gestalt Temas Biçimleri Açısından İncelenmesi
Authors: YAZICI Sema , ŞAHİN Mustafa
Published: July 2019

Bu araştırmada üniversite
öğrencilerinin psikolojik yardım alma ve romantik ilişki durumunun yanı sıra
cinsiyetlerinin ve ebeveyn tutumlarının Gestalt temas biçimleri açısından
incelenmesi amaçlanmaktadır. Çalışma grubu çeşitli üniversitelerde eğitim
almakta olan 794 üniversite öğrencisinden oluşmaktadır. Veri toplama aracı
olarak “Gestalt Temas Biçimleri Yeniden Düzenlenmiş Formu” ve araştırmacı tarafından
hazırlanan “kişisel bilgi formu” kullanılmıştır. Veriler SPSS 18.0 paket
programı ile analiz edilmiştir. Verilerin analizinde “t-testi” ve “tek yönlü
varyans analizi” teknikleri kullanmıştır. Araştırma sonuçları üniversite
öğrencilerinin Gestalt temas biçimleri ile cinsiyet, algılanan anne-baba tutumu,
romantik ilişki durumu ve psikolojik yardım alma durumu arasında anlamlı
ilişkiler olduğunu göstermektedir. Bu doğrultuda elde edilen bulgular ilgili
literatür çerçevesinde tartışılmış ve bazı önerilerde bulunulmuştur.
8. Sınıf Öğrencilerinin Matematiksel Problemler Bağlamındaki Argümantasyon Süreçlerinin İncelenmesi
Authors: ŞENGÜL Sare , TAVŞAN Sevilay
Published: July 2019

Bu araştırmanın amacı 8. sınıf öğrencilerinin matematiksel problemler bağlamındaki argümantasyon süreçlerinin incelenmesidir. Çalışma Trabzon ilinde bir devlet ortaokulunda gerçekleştirilmiştir. Çalışma grubu, “benzeşik (homojen) örnekleme” yöntemi ile seçilen üç öğrenciden oluşmaktadır. Bu öğrencilerin ikisi kız, biri erkektir. Araştırmada, nitel araştırma modellerinden biri olan özel durum çalışması kullanılmıştır. Veri toplama aracı olarak iki problem çözme etkinliği, yarı yapılandırılmış görüşme formu, video ve ses kayıt cihazları kullanılmıştır. Problem çözüm süreçlerinde, öğrenciler arasında meydana gelen tartışmalar Toulmin’in argümantasyon modeline göre analiz edilmiştir. Öğrencilerin sürece yönelik görüşlerini incelemek için ise Akı ve Gürel’in (2016) çalışmalarında kullanmış oldukları çerçeveden yararlanılmıştır. Araştırma sonucunda öğrencilerin argümantasyon bileşenlerinden en çok iddia (94), en az ise destekleyici (0) bileşenini kullandıkları tespit edilmiştir. Öğrencilerin ikinci uygulama sürecinde oluşturdukları argüman sayısının birinciye göre daha fazla olduğu belirlenmiştir. Bununla birlikte öğrencilerin grupça tartışarak problem çözme sürecinin kendilerine bilişsel, duyuşsal, sosyal paylaşım ve dilsel bileşenler bağlamında katkı sağladığı yönünde açıklamalarda bulundukları görülmüştür.
The Effectiveness of Using the Course Lab Program for Teaching and Assessing Sciences in Improving Grade Ten Students’ Academic Achievement and their Attitudes towards it in Oman
Authors: Albarashdi Hanan S. , Albarashdi Hafidhaa S. , Al Hamadani Mariam T.
Published: July 2019

The study aimed at measuring the effectiveness of using the Course Lab program in improving the academic achievement and the attitudes toward science among 10th grade students in Oman. The study was based on a Quasi-experimental method. The study was applied to a sample of 52 students in the tenth grade. Students were randomly divided into two groups (experimental group=26; control group=26). The two groups were equal in terms of achievement level and attitude towards science. The experimental group was taught using Course Lab program, while the control group was taught traditionally. An academic achievement test and an attitudes towards science measure was given to both groups, pre and post the intervention. The results of the study showed statistically significant differences between the control and experimental groups in the academic achievement in favor of the experimental group. There was also a statistically significant improvement in the attitudes of students of the experimental group towards science due to the use of the Course Lab program. A statistically significant relationship was found between the improvement of academic achievement and the improvement in the attitudes towards science in the post-measurement of the experimental group.
The Effectiveness of Interspersal Strategy in the Improving Accuracy Level to Solve Mathematics Problems and Task Engagement among Grade 4 Students with Learning Disabilities at the Sultanate of Oman
Authors: AL-hinai Malika A. , El Shourbagi Sahar , Emara Ehab
Published: July 2019

This study aimed to identify the effectiveness of interspersal strategy in improving accuracy level to solve mathematics problems and facilitating task engagement among grade 4 students with learning disabilities. The study sample included 20 students. They were divided randomly into two equal groups each consisting of 10 students; experimental group and controll group. The researchers used the semi-experimental method. The researchers designed mathematical problems tests, a task engagement scale and a manual for the implementation of the interspersal strategy. The findings of the study revealed statistically significant differences between the result of the pre and post-test of the experimental group in favor of the post-test. Additionally, there were statistically significant differences between the average achieved by the experimental group and the controlled group in relation to the mathematics problems. Furthermore, the study found out that there were statistically significant differences between the average resulting from the pre and post-tests relative to the level of task engagement. However, there were no statistically significant differences between the average achieved by the experimental group and the controlled group in the engagement on task.
The Effectiveness of Family Group Counseling Program Based on Structural Theory in the Parenting Skills and Family Parental Adjustment among Alternative Families
Authors: Abueita Siham D. , Alniemat Hanadi A.
Published: July 2019

This study aimed to explore the impact of a family group counseling program in the parenting skills and family parental adjustment among alternative families that have included a child into their families through alternative care programs offered by the Ministry of Social Development. The study population which was selected in a purposive way, consisted of (16) alternative families. They were randomly assigned into which experimental group (8) families and the control group (8) families, the parental skills and the family parental adjustment scales were applied pre, posttest and fellow up test at the study groups. A family counseling program based on structural theory had been developed, it consists of (15) sessions and applied on the experimental group. The results of the study indicated: There were statistically significant differences in the total, sub tests parental skills, and the family parental adjustment; were in a favor of the experimental group. There were no statistically significant differences in the parental skills and family adjustment according to the gender. There were no statistically significant differences between post-test and the follow-up test on the experimental group in the parental skills and family parental adjustment. The study recommended applying this program, on alternative families.
PENGAJIAN HALAQAH DALAM MEMBENTUK KARAKTER SANTRI DI MADRASAH ALIYAH AS’ADIYAH PUTRA PUSAT SENGKANG DI MACANANG KECAMATAN MAJAULNG KABUPATEN WAJO
Authors: Basri Hasan
Published: July 2019

ABSTRAKPenelitian Tesis ini bertujuan untuk mendeskripsikan realitas pelaksanaan sistem pembelajaran ḥalaqah Madrasah Aliyah As’adiyah Putra Pusat Sengkang di Macanang Kecamatan Majaulng Kabupaten Wajo, menelusuri ragam faktor pendukung dan penghambat dalam pelaksanaan sistem pembelajaran ḥalaqah di Pondok Pesantren As’adiyah Sengkang, dan menemukan implikasi sistem pembelajaran Halaqah dalam membentuk karakter santri.Penelitian ini tergolong jenis penelitian kualitatif dengan pendekatan fenomenologik dari segi metodologis. Sementara itu, dari segi keilmuan menggunakan pendekatan teologis, sosiologis, filosofis, dan psikologis. Untuk mendapatkan data di lapangan, peneliti melakukan wawancara terhadap guru, nara sumber, dan santri yang ada di Madrasah Aliyah As’adiyah Putra Pusat Sengkang di Macanang Kecamatan Majaulng Kabupaten Wajo. Selain itu, pengamatan secara langsung juga dilakukan pada metode dan materi pembelajaran yang disajikan pada pengajian Magrib dan Subuh. Data yang diperoleh dari hasil wawancara dan pengamatan langsung tersebut, dianalisis dengan metode kualitatif untuk mengetahui implikasinya.Hasil penelitian menunjukkan bahwa kegiatan pembelajaran ḥalaqah di Madrasah Aliyah As’adiyah Putra Pusat Sengkang di Macanang Kecamatan Majaulng Kabupaten Wajo, dilaksanakan dalam bentuk pengajian Magrib dan Subuh, dengan menggunakan beberapa kitab klasik standar, baik yang bertemakan tafsir, hadis, fikih, maupun tasawuf. Faktor pendukung lokasi pengajian yang strategis, sebab jauh dari kebisingan dan hiruk-pikuk suasana perkotaan. Adapun faktor-faktor penghambat, antara lain: Berbagai sarana dan fasilitas yang tidak mendukung, baik dari segi pemondokan, air bersih, dan sarana kesehatan.Implikasi pelaksanaan pengajian Magrib dan Subuh tersebut, dapat menambah ilmu dan memperluas wawasan para santri dan alumni, terutama: Pertama, meningkatkan kemampuan para santri dalam penguasaan tata bahasa Arab. Kedua, menambah wawasan keilmuan para santri terhadap materi kitab-kitab klasik, baik yang berkaitan dengan pengetahuan tafsir al-Qur’an, hadis-hadis Rasulullah saw., problematika fikih, dan wawasan tasawuf. Ketiga, memberikan bekal kepada santri dan alumni untuk menjadi muballig yang handal dan professional. Keempat, membentuk karakter santri berupa kedisiplinan, kebersamaan, kesungguhan, kasih sayang, penghargaan, kesabaran, kemandirian, kesetaraan, musyawarah, kerjasama, kepedulian, tanggung jawab dan keikhlasan.
Estudo da adaptação estratégica da accountability
Authors: Jesus Marlene Rodrigues de , Sausen Jorge Oneide , Fernandes Sandra Beatriz Vicenci
Published: July 2019

O presente artigo discorre sobre o processo de mudança e adaptação estratégica da accountability do município de Ijuí/RS, em um estudo a partir da institucionalização do processo de accountability, indicando as possibilidades de desenvolvimento no município ao longo do período de mudança e de adaptações, de ordem da legislação pública, do exercício da cidadania e do controle social. Propõe-se uma análise longitudinal da direct research (MINTZBERG, 1978), contemplando o ambiente de mudança e as questões de organização e adequação realizadas no decorrer do processo, com as contribuições de Pettigrew, Ferlie e Mckee (1992) para o contexto, conteúdo e processo de mudança, e de Hrebiniak e Joyce (1985) para a análise e interpretação das tipologias de adaptação estratégica. O município está situado na região Noroeste/RS e destaca-se por sua população e pela participação da sociedade no acompanhamento da gestão pública, dando importância para a accountability como fundamental no processo de gestão estratégica perante a responsabilidade com ética, na condução dos recursos públicos em geral. O estudo revela que no processo de mudança e adaptação estratégica da accountability o ambiente é determinante tanto para a escolha diferenciada como para a escolha estratégica, e a adaptação por vontade prevalece no sentido de aproximar o desempenho do governo com as necessidades do cidadão. Em relação ao desenvolvimento da accountability, a interação da gestão pública com o cidadão é capaz de produzir resultados por meio das escolhas estratégicas.
Palavras-chave: Adaptação estratégica. Esfera pública. Accountability. Desenvolvimento. Ijuí.
A comunicação dos riscos na logística reversa das embalagens de agrotóxicos no Brasil
Authors: Leal Daniela de Ulyssea , Lopes Ivonete da Silva
Published: July 2019

Este artigo investiga como o Instituto Nacional de Processamento de Embalagens Vazias, responsável pelo programa de recolhimento de embalagens de agrotóxicos, comunica os riscos que envolvem as práticas com produtos agroquímicos através do conteúdo do seu site. Desde 2002, a responsabilidade compartilhada nesta cadeia de logística reversa é obrigatória por lei. Com a ajuda do softwear Iramuteq foi realizada uma análise de conteúdo baseada na frequência das palavras, resultando numa estrutura de nuvem, e de similitude. Através destas análises pode-se apreender que o instituto lança mão de eufemismo para comunicar tais riscos, inclusive substituindo o termo agrotóxico por defensivo agrícola.

Palavras-chave: Comunicação de Risco. Agrotóxico. Logística Reversa.
Influence of Zinc Sulphate on the Probiotic Properties of Lactobacillus plantarum CCM 7102
Authors: Mudroňová D. , Gancarčíková S. , Nemcová R.
Published: July 2019

The effects of zinc sulphate on selected properties of L. plantarum CCM 7102 were tested in vitro. The resistance of lactobacilli to higher concentrations of ZnSO4 (up to 5000 mg Zn2+.l−1) in growth media was strain-dependent. Further studies were carried out on the most resistant strain of L. plantarum CCM 7102. While the addition of low concentrations of zinc sulphate into the growth media (< 100 mg Zn2+.l−1) did not influence the properties of L. plantarum CCM 7102, the concentrations of 100—500 mg Zn2+.l−1 stimulated: the growth rate, production of lactic acid, adhesion to porcine enterocytes and the inhibition of pathogens E. coli O8:K88+ent+, S. enterica and S. Typhimurium. Conversely, however, high concentrations > 500 mg Zn2+.l−1 inhibited these properties. The addition of zinc (250 mg Zn2+.l−1) did not affect the resistance to antimicrobials, low pH, and the resistance to bile salt was affected only weakly. Zinc-resistant probiotic Lactobacillus strains are suitable for use in feedstuffs with a higher content of zinc designed for the prevention of post weaning diarrhoea in pigs.
Effects of Slackline Training on Acceleration, Agility, Jump Performance and Postural Control in Youth Soccer Players
Authors: Fernández-Rio Javier , Santos Luis , Fernández-García Benjamín , Robles Roberto , Casquero Iván , Paredes Raúl
Published: July 2019

The goal of this study was to assess the effects of a supervised slackline training program in a group of soccer players. Thirty-four male division I under-19 players (16.64 ± 0.81 years) agreed to participate in the study. They were randomly divided into an experimental group (EG) and a control group (CG). The first group (EG) followed a 6-week supervised slackline training program (3 sessions/week; 5-9 min/session), while the CG performed only regular soccer training. Several variables were assessed in all participants: acceleration (20-m sprint test), agility (90º turns test), jump performance (squat jump, countermovement jump), and postural control (Center of Pressure ( CoP) testing: length, area, speed, Xmean, Ymean, Xspeed, Yspeed, Xdeviation, Ydeviation). Ratings of perceived exertion and local muscle ratings of perceived exertions were also recorded after each slackline training session. At post-tests, there was a significant increase only in the EG in acceleration, agility, squat jump and countermovement jump performance, as well as several CoP variables: area in the bipedal support on a firm surface, and length, area and speed in the left leg on a firm surface. The program was rated as “somewhat hard” by the players, while quadriceps, gastrocnemius and tibialis anterior were the most exerted muscles while slacklining. In conclusion, slackline training can be an effective training tool for young, high-level soccer players.
Experimental and Numerical Investigations of Pipeline with Resonator
Authors: Pałczyński Tomasz , Kantyka K.
Published: July 2019

This article presents the current state of the art regarding the use resonators in straight pipes. There is considerable need to control and reduce pressure pulsation in pipelines supplied with pulsating flows. The use of a Helmholz resonator introduces an additional degree of freedom to the analysed dynamic system. Building on previous experimental investigations by the authors, which identified the nonlinear properties of straight pipes supplied with pulsating flows, this study describes an experimental test rig, measurement methods and mechanical analogies for one (1DOF) and two (2DOF) degrees of freedom. The results are presented in the form of a 3D map of amplitude-frequency characteristics, as a function of the resonator volume determined by piston height. The dynamic properties of the described system are presented as amplitude-phase characteristics, based on a comparison of the numerical and experimental results.
Theoretical Investigation on Growth Kinetics and Thermodynamic Properties of Pyridine-2-Carboxylic Acid Crystals
Authors: Manopradha N. , Rama S. , Gowri S. , Kirubavathi K. , Selvaraju K.
Published: July 2019

This work illustrates the significance of kinetic parameters of nucleation and thermal decomposition for Pyridine-2-carboxylic acid crystals. In the interest of maximizing the growth condition for the production of single crystals, nucleation parameters such as interfacial energy (σ), volume free energy (ΔGv
), critical energy barrier for nucleation (ΔG
*), radius of the critical nucleus (r*) and nucleation rate (J) were determined from the classical nucleation theory of solubility-enthalpy relation. The optimized geometry of the compound was computed from the DFT-B3LYP gradient calculations employing 6-31G(d,p) basis set and its vibrational frequencies were evaluated. Based on the vibrational analysis, the thermodynamic parameters were obtained and the correlative equations between these thermodynamic properties and variation in temperatures were also reported.
Investigation of mechanical behavior of friction stir welded joints of AA6063 with AA5083 aluminum alloys
Authors: Dharani Kumar S. , Sendhil Kumar S.
Published: July 2019

Aluminum alloy finds its applications in various sectors of engineering. This paper discusses the investigation of mechanical characteristics of butt weld joints of aluminum alloy AA6063 along with AA5083. An experiment was conducted for different tool rotational speeds of 600 rpm, 800 rpm and 1000 rpm. Specifications of friction stir welding machine were 4 kN axial load and welding speed of 40 mm/min. Friction stir welded (FSW) joints of higher tensile strength, lower flexural strength and lower impact strength with maximum hardness, for the work piece fabricated at 1000 rpm using a high speed steel tool with a cylindrical profile was observed. Better understanding of the effect of tool rotational speed and mechanical properties was illustrated through the experimental result.
Studying of movement kinematics of dynamically active sieve
Authors: Popolov Dmitry , Shved Sergey , Zaselskiy Igor , Pelykh Igor
Published: July 2019

The article presents the movement kinematics of the modular bar element of a dynamically active polymer sieve of a vibrating screen. On the basis of analytical methods, the mathematical model was obtained, which makes it possible to determine the law and trajectory of the modular bar element movement depending on its geometric characteristics, physico-mechanical properties of the polymer material, the regime and technological parameters of the vibrating screen. The results of this research show that in the working frequency range of the vibrating screen grate, modular bar element of the dynamically active sieve moves along the trajectories, the envelope of which is represented by Cassini’s ovals, which along with the generation of the amplitude component in the horizontal and vertical directions allows one to obtain the selfcleaning effect of the sowing surface.
Shear buckling of steel foam sandwich panel resting on Pasternak foundation
Authors: Nazarimofrad Ebrahim , Barang Mehdi
Published: July 2019

The objective of this paper is to assess the inplane shear buckling of a steel foam sandwich panel that relies on elastic Pasternak foundation. The panel is a combination of solid steel face sheets and foamed steel cores. Foamed steel, that is steel with internal voids, provides enhanced bending rigidity and energy dissipation, and also, the potential to reduce local buckling. The Classic plate theory is employed where their governing equations are solved by the Rayleigh–Ritz method. Uniformly distributed in-plane shear loads are applied to the two opposite edges of the panel and all the four edges of the panel are simply supported. Finally, the effects of the panel parameters, such as the existence of a Pasternak foundation, aspect ratios, and central fraction of the steel foam core, are presented. The results showed that the optimum central fraction of the steel foam core would be 65%, so that the maximum critical shear buckling load has taken place.
A Detailed Study of Row-Trenched Holes at the Combustor Exit on Film-Cooling Effectiveness
Authors: Kianpour Ehsan , Sidik Nor Azwadi Che
Published: July 2019

To analyse the effects of cylindrical- and row-trenched cooling holes with an alignment angle of 90 degrees on the film-cooling effectiveness near the combustor end wall surface at a blowing ratio of 3.18, the current research was done. This research included a 3D representation of a Pratt and Whitney gas turbine engine, which was simulated and analysed with a commercial finite volume package FLUENT 6.2.26. The analysis was done with Reynolds-averaged Navier–Stokes turbulence model on internal cooling passages. This combustor simulator was combined with the interaction of two rows of dilution jets, which were staggered in the streamwise direction and aligned in the spanwise direction. In comparison with the baseline case of cooling holes, using row-trenched hole near the end wall surface increased the film-cooling effectiveness 44% in average.
Investigation of the effect of thermal stress on the interface damage of hybrid biocomposite materials
Authors: Sadat Salima , Mokaddem Allel , Doumi Bendouma , Berber Mohamed , Boutaous Ahmed
Published: July 2019

In this paper, we have studied the effect of thermal stress on the damage of fiber-matrix interface of a hybrid biocomposite composed of two natural fibers, Hemp, Sisal, and Starch matrix. Our genetic modeling used the nonlinear acoustic technique based on Cox’s analytical model, Weibull’s probabilistic model, and Lebrun’s model describing the thermal stress by the two coefficients of expansion. The stress applied to our representative elementary volume is a uni-axial tensile stress.

The numerical simulation shows that the Hemp- Sisal/Starch hybrid biocomposite is most resistant to thermal stresses as compared with Hemp/Starch biocomposite. It also shows that hybrid biocomposite materials have a high resistance to applied stresses (mechanical and thermal) compared to traditional materials and biocomposite materials. The results obtained in our study coincide perfectly with the results of Antoine et al., which showed through experimental tests that natural fibers perfectly improve the mechanical properties of biocomposite materials.
Application of Genetic Algorithm Technique for Machining Parameters Optimization in Drilling of Stainless Steel
Authors: Kannan T. Deepan Bharathi , Kumar B. Suresh , Kannan G. Rajesh , Umar M. , Khan Mohammad Chand
Published: July 2019

This work is aimed at developing relations between the pertinent variables that affect drilling process of stainless steel using artificial neural network. The experiments were conducted on vertical CNC machining centre. The parameters used were spindle speed and feed rate. The effect of machining parameters on entry burr height, exit burr height and surface roughness was experimentally evaluated for different spindle speeds and feed rates. A model was established between the drilling parameters and experimentally obtained data using ANN. The predicted values and measured values are fairly close, which indicates that the developed model can be effectively used to predict the burr height and surface roughness in drilling of stainless steel. Genetic algorithm (GA) technique was used in this work to identify the optimized drilling parameters. Confirmation test was conducted with the optimized parameters and it was found that confirmation test results were similar to that of GA-predicted output values.
Numerical Validation of Drilling of Al6061-T6 with Experimental Data
Authors: Elango Prashant , Marimuthu K. Prakash
Published: July 2019

Drilling is a cutting process that uses a drill bit to cut a circular profile in workpiece. Forces acting on the drill bit reduce its life expectance. Analysis of forces acting on the drill bit during drilling prevents the tool from failing prematurely because of wear and excess feed rate. Excess feed rate can induce excessive internal stress on both the tool and workpiece. This paper aims to study the effects of reaction force acting on a drill bit during drilling of Al6061-T6. A numerical finite element simulation study is performed with commercially available software called Abaqus. Simulation results depend on the right choice of material property such as Johnson–Cook material property and Johnson–Cook damage property. Validation of material property is achieved by comparison of experimental results with simulative results. Reaction force acting against the drill bit during drilling is compared.
Development of a cryogenic condenser and computation of its heat transfer efficiency based on liquefaction of nitrogen gas
Authors: Chowdhury Debajyoti R. , Chakraborty Nathuram , Sarkar Swapan C.
Published: July 2019

The typical cryogenic condenser described here transfers the refrigerating effect from its inner side to its outer side through the wall of the condenser. The separate close refrigeration cycle operates on Reverse Stirling Cycle using hydrogen or helium as working fluid. The nitrogen gas gets liquefied when it comes in contact with the cold outer surface of the condenser. We have successfully developed a cryogenic condenser using copper of electrolytic grade for a liquefaction duty of 10 liters of liquid nitrogen per hour. Condenser effectiveness is evaluated by assembling it in Cryogenerator model, ZIF-1002 and by noting the liquefaction rate. Both the results are satisfactory. Selection of material, fabrication, testing of the condenser developed for a Cryogenerator have been described in the paper to assess its suitability for a Cryogenerator based on Reverse Stirling cycle liquefier.
Finite element simulation and experimental validation of the effect of tool wear on cutting forces in turning operation
Authors: Sai Venkatesh S. , Ram Kumar T. A. , Blalakumhren A. P. , Saimurugan M. , Marimuthu K. Prakash
Published: July 2019

Machining is the most widely used process in manufacturing, and tool wear plays a significant role in machining efficiency and effectiveness. There is a continuous requirement to manufacture high-quality products at a lower cost. Many past researches show that variations in tool geometry affect the cutting forces significantly. The increase in cutting forces leads to excessive vibrations in the system, giving a poor surface finish to the machined product. In this work, a 2D coupled thermo-mechanical model is developed using Abaqus/Explicit to predict the cutting forces during turning of mild steel. Johnson–Cook material model along with damage model has been used to define the material behavior. Coulomb’s friction model is considered for defining the interaction between the tool and the work piece. Metal cutting process is simulated for different sets of cutting conditions and compared with experimental results. The finite element method results correlate well with the experimental results.
Polish Indian Hobbyists and Cultural Appropriation
Authors: Wilczyńska Elżbieta
Published: July 2019

This article attempts to describe the Polish-American Friends Movement (PAIFM) in the context of cultural appropriation. It first describes the history of the movement by linking it to the phenomenon of playing Indian, which started in the United States in the colonial period and then was transplanted to Europe in the late 19thcentury. Subsequently, it briefly presents the history of the Polish hobbyism movement in Poland, pointing out the historical, social, and psychological circumstances of its development. In the next part it defines the concept of cultural appropriation and its main types according to James Young (2010). The last part is devoted to a detailed analysis of different forms of activities of the PAIFM, especially the annual week gathering, as observed by the author during the 40thgathering of Polish Indian enthusiasts in 2016. Different types of cultural appropriation and an array of consequences resulting from such a positioning are discussed. In this paper it is argued that the negative undertones of the concept obscure the complexity of the movement as a cultural phenomenon and its multiple links with Native American cultures and their present political and cultural situation.
Let Them Be Heard: Bringing Native American Experience Closer in Teaching
Authors: Wood Edyta
Published: July 2019

Teaching about Native Americans, especially as a non-Native person, involves a number of complications. The experience and histories of Indigenous peoples have often been presented from the point of view of the Euroamerican hegemonic power and complicated by a long pattern of colonization, including education. As a result, Native peoples themselves as well as outsiders have been mostly exposed to the dominant culture’s perspectives of Native Americans, often being stereotyped and reductive. The aim of the present paper is to examine the theoretical frameworks advanced by American Indian scholars and educators who demonstrate the methods which expose colonization and show the fundamental Native concepts needed to be involved in the pedagogies concerning Indigenous people. The primary consideration is to be guided by Native peoples' own concepts in trying to avoid perpetuating the colonizing pattern. Bryan McKinley Jones Brayboy (a Lumbee scholar and educator) advanced the Tribal Critical Race Theory, which offers a comprehensive framework which can provide useful guidelines for teaching about Native Americans. The paper also offers suggestions for implementing this framework in the classroom such as using contemporary Native American autobiographical writing, involving the concept of performance or digital resources like those developed by Craig Howe, an Oglala Sioux, and the Center for American Indian Research and Native Studies. Exposing students to Native people through Indigenous people's own stories and resources may be helpful in presenting them as real people. Such an approach may help students to be able to hear and access Native peoples’ own voices sharing their lives, which can contribute to bringing their experience closer to students.
GAMBARAN TINGKAT KEPUASAN ESTETIK DAN FONETIK PADA PEMAKAI GIGI TIRUAN LENGKAP DI FAKULTAS KEDOKTERAN GIGI UNIVERSITAS TRISAKTI
Authors: Falatehan Niko , Kusumah Eddy
Published: July 2019

Kehilangan seluruh gigi merupakan masalah kesehatan yang diderita oleh kebanyakan lansia. Jika masalah ini tidak diperbaiki akan mengganggu kecantikan (estetik) dan gangguan bicara (fonetik) pada pasien lansia. Untuk mengatasi masalah ini pasien dibuatkan gigi tiruan lengkap (GTL). Pasien lansia memiliki beragam tingkat kepuasan tergantung dari hasil pelayanan yang diberikan dan GTL yang dibuatkan. Penelitian ini adalah untuk mengetahui tingkat kepuasan pasien dalam menggunakan gigi tiruan lengkap dari segi estetik dan fonetik. Penelitian ini adalah penelitian non eksperimental yang bersifat observasional deskriptif. Pengumpulan data dilakukan dengan tekhnik pembagian kuisioner kepada pasien lansia pengguna gigi tiruan lengkap yang berada di Rumah Sakit Gigi Mulut (RSGM) Fakultas Kedokteran Gigi (FKG) Usakti Jakarta Barat yang berusia 60 tahun keatas sebanyak 30 orang. Berdasarkan hasil analisis program SPSS menggunakan windows versi 22.0 menunjukkan bahwa pengguna gigi tiruan lengkap terhadap faktor estetik memiliki tingkat kepuasan 67% dan tidak puas 33%. Demikian juga faktor fonetik memiliki tingkat kepuasan sebesar 74% dan tidak puas 26%. Berdasarkan data yang diperoleh penggunaan gigi tiruan lengkap lebih banyak pada pasien perempuan yang berusia 60-74 tahun. Tingkat kepuasaan estetik penggunaan gigi tiruan lengkap di RSGM FKG Usakti wanita lebih rendah dibandingkan pria.Kata Kunci: Gigi tiruan lengkap, estetik, fonetik
KONSENTRASI HAMBAT DAN BUNUH MINIMUM EKSTRAK SERAI (Cymbopogon citratus) TERHADAP Candida albicans
Authors: . Afrina , Nasution Abdillah Imron , Rahmania Nur
Published: July 2019

Candida albicans merupakan spesies yang paling banyak terdapat di rongga mulut sebagai flora normal dan juga sangat berkaitan dengan candidiasis terutama oral candidiasis. Oral candidiasis adalah infeksi oportunistik yang paling umum berdampak pada mukosa rongga mulut. Serai (Cymbopogon citratus) memiliki kandungan kimia yang terdiri dari alkaloid, tanin, dan terpenoid yang dapat menghambat pertumbuhan jamur C.albicans. Penelitian ini bertujuan untuk mengetahui Konsentrasi Hambat Minimum (KHM) dan Konsentrasi Bunuh Minimum (KBM) ekstrak serai terhadap C. albicans. Ekstrak Serai dalam konsentrasi 6,25%, 12,5%, 25%, 50%, 75%, dan 100% dibuat secara maserasi menggunakan pelarut etanol 96%.Pengujian untuk menilai KHM dan KBM ekstrak serai terhadap C.albicans dengan metode dilusi yang terdiri dari kelompok perlakuan, kelompok kontrol negatif (aquades) dan kelompok kontrol positif (flukonazol). KHM dan KBM diketahui dengan menghitung jumlah koloni pada media SDA. Data dianalisis dengan uji One Way ANOVA yang kemudian dilanjutkan dengan uji Kruskal Wallis. Tidak ada perbedaan bermakna antara kelompok perlakuan. Konsentrasi yang efektif dalam menghambat C. albicans adalah pada konsentrasi 25% dan Konsentrasi Bunuh Minimum didapatkan pada konsentrasi 100% dengan tidak ada pertumbuhan koloni C. albicans pada media SDA.Kata Kunci: Candida albicans, Oral Candidiasis, serai
DAMPAK KARAKTERISTIK MALOKLUSI GIGI ANTERIOR BERDASARKAN TINGKAT KEPARAHANNYA TERHADAP STATUS PSIKOSOSIAL
Authors: Arifin Rafinus , . Sunnati , Daulay Armi Amanda
Published: July 2019

Usia puncak pertumbuhan anak merupakan masa peralihan antara masa anak-anak hingga menuju masa dewasa yang meliputi perubahan biologis, kognitif dan sosial emosional. Maloklusi adalah suatu anomali yang menyebabkan gangguan fungsi oral dan estetika serta memerlukan perawatan jika sudah mengganggu fisik dan emosional. Berbagai penelitian telah membuktikan bahwa remaja pada usia puncak pertumbuhan yang mengalami maloklusi gigi anterior akan berdampak negatif terhadap status psikososial remaja. Tujuan penelitian ini untuk mengetahui dampak karakteristik maloklusi gigi anterior terhadap status psikososial (studi kasus pada usia puncak pertumbuhan di Sekolah Menengah Pertama (SMP) Negeri Banda Aceh dengan menggunakan indeks PIDAQ). Jenis penelitian ini adalah observasional analitik dan penelitian ini dilakukan di SMP Negeri dengan total subjek 279 siswa. Subjek diberikan kuisioner PIDAQ untuk mengetahui dampak karakteristik maloklusi gigi anterior terhadap status psikososial. Hasil uji Wilks’ Lamda menunjukkan dampak signifikan karakteristik maloklusi gigi anterior terhadap status psikososial pada usia puncak pertumbuhan, diperoleh nilai p=0,003 (p0,05). Kesimpulan dari penelitian ini menunjukkan adanya dampak karakteristik maloklusi gigi anterior berdasarkan tingkat keparahannya terhadap status psikososial pada usia puncak pertumbuhan.Kata kunci: maloklusi, protrusif, PIDAQ
Strategi Pengembangan Usaha Tembakau Rajangan pada Kelompok Tani Tegal Suci Desa Yangapi Kecamatan Tembuku Kabupaten Bangli
Authors: PUTRA I GEDE WIRATHAMA BHASKARA , USTRYANA I NYOMAN GEDE , DEWI IDA AYU LISTIA
Published: July 2019

Cut Tobacco Business Development Strategy in the Farmers Group of TelagaSuci, Village of Yangapi Sub-District of Tembuku Regency of BangliThis study aimed to find out alternative of cut tobacco business development strategyin the Farmers Group of Telaga Suci, Village of Yangapi, to identify how thestrengths, weaknesses, opportunities, and threats of the cut tobacco businessdevelopment at the Farmers Group ofTelaga Suci, Yangapi village. It was seen fromthe internal environment to find out the strengths and weaknesses, and the externalaspects to determine the opportunities and threats.The research location was in theFarmers Group of Telaga Suci, Village of Yangapi. The key informants in thisresearch were seven people. The key informants were determined deliberatelybecause the internal environment and the external environment of the cut tobaccobusiness in the Farmers Group ofTelaga Suci, of Yangapi Village was alreadyknown. This study used three kinds of analysis: analysis of the internal environment,external environment analysis and SWOT analysis (strengths, weaknesses,opportunities, threats).The cut tobacco business in the Farmers Group ofTelaga Sucihas been able to utilize the strength to overcome the weaknesses and to take theopportunity to address the threat. It was obtained five alternative strategies, namely:providing guidance to the group on how to manage the business and providingassistance of production facilities, development-oriented agribusiness to attractconsumers by utilizing the financial institution to increase capital, promotion topenetrate the wider market, making the rules of the group to overcome theconversionof farmland, and to improve the quality of tobacco in order to compete with othergroups of tobacco.
Peran Aspek Kelembagaan Subak dalam Konteks Pengendalian Alih Fungsi Lahan (Kasus Subak Semat, Desa Tibubeneng, Kecamatan Kuta Utara, Kabupaten Badung)
Authors: DEWI NI LUH MADE KUSUMA PARAMITA , SUARDI I DEWA PUTU OKA , SARJANA I DEWA GEDE RAKA
Published: July 2019

TheRole of Institutional Aspects of Subak in the Context of Land Conversion Control (A Case at Subak Semat, Village of Tibubeneng, Sub-District ofKuta Utara,Regency of Badung)Land conversion phenomenon that occurred in Bali is very high. The great number ofland conversion leads to reduced agricultural land in an irrigation system of Subak. Itwill affect the sustainability of Subak. Subak role in the institutional aspects must beconsidered in controlling land conversion. The purpose of this study was todetermine how the roles of the institutional aspects of water control system in thecontext of land conversion control at Subak Semat, Sub-District of Kuta Utara. Thescope of this research is the institutional role ofSubak as controller of the landconversion. The study examined three indicators, namely regulation, Subak activities,services and facilitation of Subak. The research method was a qualitative descriptivemethod.Based on the research results, judging from the three indicators of research,namely regulation, Subak activities and services and facilitation, institutional role inregulation needs to accommodate the provisions of the ban on land conversion intotraditional rules of awig awig. The role of the institutional aspects of the activities,services and facilitation has been at a good category, each categories was good with ascore 70% and 80%. The provisions of the ban on land conversion into traditionalrules of awig awigSubak is needed with a score 81,17% so that the land conversioncan be controlled. The lack of clear boundaries related to the ban on land conversionwill be the reference for the members of Subak if they want to sell their land. Inaddition, the role of activities, services and facilitation of Subak still need to beimproved to be in much better category.
Analisis Integrasi Pasar Beras di Provinsi Bali
Authors: AGUNG I DEWA GEDE , DARYANTO JOKO
Published: July 2019

Analysis of Rice Market Integration in The Province of BaliThe creation of market integration in Indonesia will guarantee production stabilityand the national rice consumption. One of the criteria for integration of the marketcan be seen from the integration level among the rice markets. This study aimed tolook at the degree of integration of rice markets in Bali Province. The data used wasthe real price of rice in the local market as well as data from BPS from 2011 to 2015.To the market integration, it was measured based on IMC (Index of MarketConnection). The results showed that Bali rice market integration integrated in theshort terms with other provinces except with Central Java, South Sumatra, andLampung. In the long terms Bali integrated with other provinces, and best integratedwith West Java, Central Java, Yogyakarta, East Java, and NTB, with their respectiveelasticity transmissions of 0.75; 0.88; 0.82; and 0.79. The role of government isexpected to build good information network, so farmers as producers can have betterbaraining position in determining the prices at the producer level.
Analisis Kinerja Keuangan berdasarkan Rasio Keuangan pada PT. BPR. Saptacristy Utama
Authors: PRADNYANI NI LUH KOMANG AYU , USTRIYANA I NYOMAN GEDE , ANGGRENI I GUSTI AYU AGUNG LIES
Published: July 2019

Analysis of Finece Performance Base on Fund Finance Ratio of PT. BPR. Saptacristy UtamaRural Banks (BPR) is a formal financial institution that has a function as a financialintermediary, especially on the national microfinance system. The study aimed tofind out the financial performance of PT. BPR. Saptacristy Utama when it wasanalyzed based on the financial ratios during the period of 2011 to 2015. Based onthe results of the financial analysis, liquidity ratio is categorized good, when viewedfrom the average cash ratio and the average loans to deposit ratio. The solvency ratiois said to be good, judging by the average capital adequacy ratio. Activity ratio isquite good when viewed from the multiplier leverage ratio and asset utilization ratiothat continue to increase. The profitability ratio is classified to be good,as can beseen on the average net profit margin, return on assets and return on equity. PT. BPR.Saptacristy Utama is expected to maintain its financial performance by strengtheningits business activities to increase the amount of its assets, the amount of thedistribution of funds in the form of loans and the placement of funds in other banksshould also be increased, revenue of operations and profits for subsequent yearsshould beincreased, as well as improving sale and service to its customers andprospective customers.
Identifikasi Faktor-Faktor yang Mempengaruhi Pendapatan Petani Asparagus (Kasus pada Kelompok Tani Sayur Mertanadi di Desa Pelaga, Kabupaten Badung)
Authors: SUYOGA K A EDI , DARMAWAN DWI PUTRA , USTRIYANA I NYOMAN GEDE
Published: July 2019

Identification of Factors Affecting Asparagus Farmer’s Income (Case On Kelompok Tani Mertanadi at Pelaga Village, Badung Regency)Asparagus is one of the horticultural products that has high sales value. MertanadiVegetables Farmer group is a group of farmers who produce asparagus in Bali. Thepurpose of this study was to determine the factors of production that have an impacton farmer’s income. Data collection for this study was conducted from May to June2016 with accidental sampling method. PLS path modeling is used to analyze theinfluence of production factors on income. Results showed some of the factors ofproduction such as chicken manure, cow manure, NPK fertilizer, and urea fertilizerhas effect on revenue. All factors of production are reflected through latent variablesfertilizers and chemicals, with t-statistics value of 5.625 at 5% significance level andalso with f2 value of 0.552 in the model. Other factors of production used as anindicator obtained did not have a significant effect on revenue. Suggestion can begiven based on this research to farmers is to optimize the use of fertilizers and drugsin the production process by taking into account the costs required. Government isexpected to support the farmers with price support policies. Further research isexpected to do research with indicators relating to cost with more indicators and alarger sample.