bluuebunny/crossref_metadata_2025 huggingface dataset:
Combustors with Low Emission Levels for Aero Gas Turbine Engines
Authors: Guellouh Noureddine , Szamosi Zoltán , Siménfalvi Zoltán
Published: March 2019

The aircrafts are responsible for emitting several types of pollutants, especially the pollutants in the form of NOX, CO2, CO, UHC, SOX and Particulate Matter PM (smoke/soot). The impact of aviation emissions on the global is well known, where these emissions modify the chemical and microphysical properties of the atmosphere resulting in changes of earth’s climate system, which can ultimate in critical changes in our planet fragile ecosystem, also the pollutants produced by aircraft engines cause many health problems. This is why the International Civil Aviation Organisation (ICAO) is seriously seeking to control the emission levels by issuing new standards during the successive meetings of the Committee on Aviation Environmental Protection CAEP (CAEP/01 in 1986, CAEP/2, CAEP/4, CAEP/6, CAEP/8, etc). The new regulations include more stringent standards aimed to reduce emission levels, this led to increased interest in low emission technologies. In this paper, a comprehensive review of low emissions combustion technologies for modern aero gas turbines is represented. The current low emission technologies include the high Technologies Readiness Level (TRL) including RQL, TAPS, DAC and LDI. Also, there are advanced technologies at lower TRL including LPP, ASC and VGC.
Tribological Behaviour Comparison of ABS Polymer Manufactured Using Turning and 3D Printing
Authors: Hanon Sharba Muammel M , Kovács M. , Zsidai László
Published: March 2019

Additive and subtractive manufacturing of Acrylonitrile Butadiene Styrene (ABS) were employed for fabricating samples. The Additive manufacturing was represented through 3D printing, whereas subtractive manufacturing carried out by Turning. Some developments have been applied for enhancing the performance of the 3D printer. Tribological measurements of the turned and 3D printed specimens have been achieved. Studying the difference between static and dynamic friction factors and the examination of wear values were included. A comparison of the tribological behaviour of the turned and 3D printed ABS polymer has been investigated.
Резонансное поглощение электромагнитного излучения в монослое фосфорена
Authors: Карпунин В.В. , Маргулис В.А.
Published: March 2019

AbstractThe absorption coefficient of the electromagnetic radiation in a phosphorene single layer placed in a magnetic field is found. A degenerate and nondegenerate electron gas is considered. The resonant dependences of the absorptance on the radiation frequency and applied magnetic field are found. Taking into account electron scattering at an ionized impurity leads to oscillation dependences of the absorption coefficient on the radiation frequency and external magnetic field. The resonance character of the absorption curve is shown. The conditions of resonances and position of resonance peaks are found.
О способе увеличения предельно допустимого уровня ударных токов короткого замыкания в электрических контактах
Authors: Чалый А.М. , Дмитриев В.А. , Павлейно М.А. , Павлейно О.М. , Сафонов М.С.
Published: March 2019

AbstractCurrent passing through electrical contacts causes additional heat release due to the presence of a contact resistance. Heat release in contacts may be considerable. In high-current contacts of high-voltage electrical equipment, the problem of overheating gets worse when fault short-circuit currents pass through the contacts. The maximum permissible level of these currents is limited by heating contact areas to their melting point. Welds due to melting of contacts lead to their failure as a rule. A way of considerably raising maximum permissible short-circuit currents has been suggested. Its idea is impulsive preheating of contacts to a temperature higher than the recrystallization temperature of the contact material. The efficiency of this approach has been confirmed experimentally. Numerical simulation of impulsive heating has been conducted. The results have helped us elaborate recommendations for selecting parameters of a train of current pulses that, acting on a contact, may greatly improve its stability against short-circuit currents.
RHETORICAL ANALYSIS OF ENGLISH STUDENTS’ BUSINESS EXPRESSIONS:A RESEARCH PAPER
Authors: Supeno Supeno
Published: March 2019

In order to persuade, a speaker must analyze the speech situation and adapt his or her speech to it. In discussions about rhetoric, Aristotle is recognized as an expert in rhetoric who devoted more than a third of his Art of Rhetoric to study of the audience. Ever since, rhetoricians have taught that a speaker who would persuade others to believe and to act in a certain way must understand how the listeners feel, what they want, and what they need; the speaker must begin where the listeners are. A persuasive writing or speaking is often aimed at the heart or the stomach instead of the head. That is, some things or reasons are more acceptable to the readers or listeners’ feeling (in the stomach) than to their logic (in the head) . Instead of being logical only, therefore, a persuasive speaker needs to add some strategies to win the listeners’ assent. Discussed in terms of tripartite as the core theory of rhetoric, this paper is intended to analyse English students’ replies to their customers’ requests through WhatsApp business role-playing. The findings show that most of the students’ replies need to be rhetorically modified to make them more persuasive.
Higher education service quality and student satisfaction, institutional image, and behavioral intention
Authors: Hwang Yong-Sik , Choi Yung Kyun
Published: March 2019

Our aim in this study was to propose an integrated model to examine the structural relationships among a higher education institution’s service quality, student satisfaction, institutional image, and behavioral intention at a private university located in South Korea. We conducted
a survey of students majoring in business to analyze these relationships. Structural equation modeling showed that students were satisfied with various aspects (tangibles, reliabilities, responsiveness, empathy, and assurance) of service quality. Also, service quality directly affected both
student satisfaction and perceived institutional image. In addition, the results indicated that students’ perceived institutional image and satisfaction directly influenced behavioral intention. Although perceived service quality was not a significant construct to predict behavioral
intention of students, our results showed a mediating effect of perceived institutional image and student satisfaction on the relationship between service quality and behavioral intention.
Structural relationships among exercise passion, emotion, and adherence behaviors of sports participants
Authors: Bum Chul-Ho
Published: March 2019

My objective was to investigate the relationships among exercise passion, emotion, and exercise adherence behaviors of social-sports participants. I found that harmonious passion of sports participants increased positive emotions, but the effect of obsessive passion was not statistically
significant. Harmonious passion decreased negative emotions, but stronger obsessive passion was associated with emotions that were more negative. Second, harmonious passion increased the participants’ exercise-adherence behaviors; however, obsessive passion had the exact opposite effect.
Third, positive emotions increased exercise-adherence behaviors, but negative emotions decreased such behaviors. With respect to indirect effects, harmonious passion for exercise had significant emotion-mediated effects on exercise-adherence behaviors. The findings of this study emphasize
the importance of passion for specific activities or behaviors that are performed by voluntary will, without any external constraints or restrictions.
Artificial Intelligence in the Legal Space
Authors: Yastrebov Oleg A
Published: March 2019

The active implementation of digital technologies into all spheres of public life, as well as the rapid development of artificial intelligence, is assuming a serious dimension, thus requiring a special attention of the legislator. The article examines the current state of the legal regulation of the artificial intelligence. The author considers the Strategy of the Information Society Development in the Russian Federation for 2017-2030, as well as provides some clear examples of active implementation of artificial intelligence into social reality. The author also provides the McKinsey consulting group's research findings which reflect the prospects for replacing human labor by robots. It is pointed out that the issue of total computerization and the corresponding displacement of a human from the sphere of intellectual activity is rather controversial. The article also discusses the main possible problems related to the artificial intelligence technologies: the problems of responsibility that may arise in the operation of industrial robots; the continuity of digital activity can affect the psychoemotional state. The issue of a possibility for creating robots with intelligence and endowed with personality is being considered from the Philosophy perspective. The conclusion is drawn that the theoretical study of the intellect and the "electronic person" is one of the possible redirections of the Russian law development in modern conditions.
Differences in food product consumption in selected Asian countries
Authors: Ochnio Luiza , Koszela Grzegorz , Suebpongsang Pornsiri
Published: March 2019

The study of consumers’ food preferences has not only sociological dimensions but also economic ones, e.g. regarding producers searching for new markets. It is also a good starting point for estimating the willingness of consumers to spend money on the consumption of individual products. In this paper, the authors attempt to compare these preferences on the Asian market for nine product groups. Due to the problem complexity (considerations of tradition, religion, geographical location and size of the continent), the study included selected countries of Central and Southeast Asia (i.e. China, Mongolia, Japan, India, Thailand, Indonesia, Kazakhstan, Uzbekistan, Tajikistan, Malaysia, Myanmar, the Philippines, Pakistan, Cambodia, Vietnam, Laos and Sri Lanka). The study covered the period 2011–2013, and consumption was defined as the arithmetic mean of three years. According to the research results, contrary to the European literature, food preferences in the surveyed Asian countries vary, sometimes even considerably. This is probably related, to a large extent, to the cultural and environmental conditions that prevail in the area in question. This is evidenced by the fact that several countries can be assigned into groups in terms of similarities in food preferences. The study uses Gradual Data Analysis (a measure of ar as an indicator of the dissimilarity of food preferences, overrepresentation maps in order to visualize these dissimilarities and assign countries into groups of similar dietary preferences).
Zmiany na rynku śliwek w Polsce w latach 2010–2016 ze szczególnym uwzględnieniem śliwek regionalnych z oznaczeniami geograficznymi ChOG
Authors: Borowska Agnieszka
Published: March 2019

Celem opracowania jest przedstawienie sytuacji na rynku śliwek w Polsce na tle zmian światowych po stronie podażowej w latach 2010–2016, ze szczególnym uwzględnieniem sytuacji na rynku śliwek regionalnych mających oznaczenia geograficzne. Określono kierunki zmian w powierzchni upraw, produkcji owoców i plonu w Polsce na tle tendencji w sytuacji światowej i UE-28. Przedstawiono specyfikę, skalę i uwarunkowania produkcji oraz kształtowanie się cen śliwek regionalnych mających chronione oznaczenie geograficzne (ChOG). Główne tendencje na rynku światowym określono na podstawie wielkości z lat 2010–2016 zawartych w publikacjach FAO, dane krajowe natomiast pochodziły z GUS, ARIMR, GIJHARS, badań własnych w latach 2010–2017 oraz ze Stowarzyszenia Producentów Owoców i Warzyw w Ujanowicach.
Zróżnicowanie przestrzenne wykorzystania środków na modernizację gospodarstw rolnych z Programu Rozwoju Obszarów Wiejskich
Authors: Wicki Ludwik , Pietrzykowski Robert
Published: March 2019

Celem pracy jest określenie zmian przestrzennego zróżnicowania wykorzystania środków na modernizację gospodarstw rolnych w Polsce w ramach Programu Rozwoju Obszarów Wiejskich na lata 2007–2013 i 2014–2020. Analizą objęto okres 2007–2018. Wykorzystano dane ARiMR, GUS i Eurostat. Do oceny zmian zróżnicowania przestrzennego użyto wskaźnik autokorelacji przestrzennej Morana (Ig). Stwierdzono, że w okresie realizacji PROW 2014–2020 nastąpiły zmiany w przestrzennym rozkładzie wykorzystania dotacji na wsparcie inwestycji w gospodarstwach rolnych w stosunku do lat 2007–2013. Obserwowano wzrost intensywności wykorzystania środków na inwestycje w województwach, w których występowały duże gospodarstwa rolne, a ograniczenie aktywności w korzystaniu z tego działania w województwach z rozdrobnionym rolnictwem. Może to oznaczać, że w małych gospodarstwach nie jest generowana wystarczająca nadwyżka potrzebna do współfinansowania inwestycji rozwojowych. Działania ukierunkowane na wsparcie modernizacji gospodarstw w ramach PROW sprzyjają przede wszystkim rozwojowi gospodarstw silnych ekonomicznie.
Identyfikacja sposobów implementacji II filaru WPR w krajach Europy Środkowo-Wschodniej
Authors: Pawłowski Krzysztof , Czubak Wawrzyniec
Published: March 2019

Bardzo znaczącą rolę w kształtowaniu obrazu nowoczesnej, europejskiej wsi odgrywa II filar wspólnej polityki rolnej. Jego wpływ na rozwój rolnictwa i obszarów wiejskich wydaje się oczywisty, chociażby ze względu na miejsce, jakie zajmuje w strukturze budżetu Unii Europejskiej. Bardzo istotne jest jednak ścisłe określenie efektów, jakie przynosi jego realizacja. Stąd w niniejszym artykule głównym celem było ukazanie przyczyn zróżnicowania implementacji Programu Rozwoju Obszarów Wiejskich 2007–2013 w państwach środkowo- wschodniej Europy. Na tle różnic w sytuacji ekonomiczno-produkcyjnej sektora rolnego dokonano oceny konstrukcji programów i porównano jego wpływ na zmiany zachodzące w sektorach rolnych tych krajów. Dla ukazania wpływu funduszy II filaru WPR zakres czasowy prezentujący zmiany w rolnictwie obejmuje lata przed i po integracji. Na ich podstawie dokonane zostało porównanie wdrażanych działań oraz struktury ich finansowania.
Influence of environmental colors and long-term sex isolation on zebrafish shoaling behavior
Authors: Lenzi Christian , Grasso Chiara , Nicoara Mircea , Savuca Alexandra , Ciobica Alin , Plavan Gabriel , Strungaru Stefan
Published: March 2019

Zebrafish has a complex social behavior and little is known about the role of sexual preference and their environmental social interactions. In this study we investigated the potential influence of environmental colors and shoaling preferences of zebrafish male and female populations, with a focus on visual communication. Males and females were kept for 7 days in gender-isolated tanks, with a specific habitat color for each group: green for males and red for females. After the pre-test period, all the animals were kept separated and 8 noninvasive behavioral tests were conducted in a T-maze, with the application of different visual stimuli. We did not observe any clear influence of environmental coloring on social zebrafish choices. Significant sex-related differences were found in shoaling partner preference (i.e. same sex vs. other sex, one fish vs. three fish) as follows: females showed a tendency to avoid other females and spent more time with males. Male fish did not display a preference between one or three fish stimuli and they shoaled more with another male and less with a potential sexual partner. There was an obvious difference between males and females in responses and selection of shoaling partners.
Forced-eruption time for palatally impacted canines treated with and without ostectomy-decortication technique
Authors: Ferguson Donald J. , Rossais Dalal Al , Wilcko M. Thomas , Makki Laith , Stapelberg Roelien
Published: March 2019

Objectives:

To compare forced-eruption times for palatally impacted canines treated with and without the ostectomy-decortication technique and to assess the influence of palatally impacted canine pretreatment position and angle on forced-eruption time.

Materials and Methods:

The sample was composed of 118 patient-subjects with 151 palatally impacted canines treated with the ostectomy-decortication technique (n = 72) and without (n = 79). The orthopantomogram radiographs (OPGs) were analyzed for palatally impacted canine angle and horizontal and vertical position. Recovery time was measured from the start of forced eruption until the canine was within ±1 mm of final dental arch position.

Results:

The time of forced canine eruption with ostectomy-decortication technique was significantly shorter than without (6.6 vs 21.0 months). Pretreatment canine position significantly increased forced-eruption time in the ostectomy-decortication group but not in the control sample.

Conclusions:

Forced-eruption time of palatally impacted canines using the ostectomy-decortication technique was 3.2 times more rapid than without. Forced-eruption time increased significantly as a function of pretreatment palatally impacted canine position severity in the ostectomy-decortication group but not in the control.
Nine Amino Acids Are Associated With Decreased Insulin Secretion and Elevated Glucose Levels in a 7.4-Year Follow-up Study of 5,181 Finnish Men
Authors: Vangipurapu Jagadish , Stancáková Alena , Smith Ulf , Kuusisto Johanna , Laakso Markku
Published: March 2019

Several amino acids (AAs) have been shown to be associated with insulin resistance and increased risk of type 2 diabetes, but no previous studies have investigated the association of AAs with insulin secretion in a longitudinal setting. Our study included 5,181 participants of the cross-sectional METabolic Syndrome In Men (METSIM) study having metabolomics data on 20 AAs. A total of 4,851 had a 7.4-year follow-up visit. Nine AAs (phenylalanine, tryptophan, tyrosine, alanine, isoleucine, leucine, valine, aspartate, and glutamate) were significantly (P < 5.8 × 10−5) associated with decreases in insulin secretion (disposition index) and the elevation of fasting or 2-h glucose levels. Five of these AAs (tyrosine, alanine, isoleucine, aspartate, and glutamate) were also found to be significantly associated with an increased risk of incident type 2 diabetes after adjustment for confounding factors. Our study is the first population-based large cohort to report that AAs are associated not only with insulin resistance but also with decreased insulin secretion.
Tooth Sensitivity After Dental Bleaching With a Desensitizer-containing and a Desensitizer-free Bleaching Gel: A Systematic Review and Meta-analysis
Authors: Rezende M , Coppla FM , Chemin K , Chibinski AC , Loguercio AD , Reis A
Published: March 2019

Objectives:

A systematic review and meta-analysis were performed to evaluate the risk and intensity of tooth sensitivity (TS) after dental bleaching with a desensitizer-containing and a desensitizer-free bleaching gel in adult patients. Color change and risk of gingival sensitivity was also evaluated.

Methods:

A comprehensive search was performed MEDLINE via PubMed, Scopus, Web of Science, Latin American and Caribbean Health Sciences Literature database (LILACS), Brazilian Library in Dentistry (BBO), EMBASE and Cochrane Library, and System for Information on Grey Literature in Europe (SIGLE) without restrictions to identify randomized clinical trials. Abstracts from the annual conference of the International Association for Dental Research (1990–2016), unpublished and ongoing trials registries, dissertations, and theses were also searched. The quality of the evidence was rated using the Grading of Recommendations: Assessment, Development and Evaluation (GRADE) approach.

Data:

After duplicates were removed, 1352 articles were identified. After title and abstract screening, only 47 studies remained for qualitative evaluation. Most of the studies had unclear risk of bias. No difference between groups were observed for the risk ratio of TS (risk ratio = 0.99; 95% confidence interval [CI] = 0.74–1.33); intensity of TS (standardized difference in means [SMD] = 0.04; 95% CI = 0.79–0.70); color change in shade guide units (SMD – 0.04; 95% CI = 0.50–0.42); color change in ΔE* (SMD = 0.41 (95% CI = 0.07–0.89); and risk ratio of gingival irritation (SMD = 1.05; 95% CI = 0.81–1.36). Except for the risk of TS, graded as moderate quality of evidence, all other outcomes were rated as low and very low quality.

Conclusions:

Incorporating desensitizers in the bleaching gel did not reduce the risk of TS, and the quality of this evidence was considered moderate. On the other hand, the intensity of TS, color change, and risk of gingival irritation was similar between groups, but the quality of the evidence for these outcomes was graded as low or very low, thus reducing the level of confidence in these outcomes.
Delayed Photoactivation of Dual-cure Composites: Effect on Cuspal Flexure, Depth-of-cure, and Mechanical Properties
Authors: Hughes KO , Powell KJ , Hill AE , Tantbirojn D , Versluis A
Published: March 2019

Objectives:

This study tested whether delayed photoactivation could reduce shrinkage stresses in dual-cure composites and how it affected the depth-of-cure and mechanical properties.

Methods and Materials:

Two dual-cure composites (ACTIVA and Bulk EZ) were subjected to two polymerization protocols: photoactivation at 45 seconds (immediate) or 165 seconds (2 minutes delayed) after extrusion. Typodont premolars with standardized preparations were restored with the composites, and cuspal flexure caused by polymerization shrinkage was determined with three-dimensional scanning of the external tooth surfaces before restoration (baseline) and at 10 minutes and one hour after photoactivation. Bond integrity (intact interface) was verified with dye penetration. Depth-of-cure was determined by measuring Vickers hardness through the depth at 1-mm increments. Elastic modulus and maximum stress were determined by four-point bending tests (n=10). Results were analyzed with two- or three-way analysis of variance and pairwise comparisons (Bonferroni; α=0.05).

Results:

Delayed photoactivation significantly reduced cuspal flexure for both composites at 10 minutes and one hour (p≤0.003). Interface was >99% intact in every group. Depth-of-cure, elastic modulus, and flexural strength were not significantly different between the immediate and delayed photoactivation (p>0.05). The hardness of ACTIVA reduced significantly with depth (p<0.001), whereas the hardness of Bulk EZ was constant throughout the depth (p=0.942).

Conclusions:

Delayed photoactivation of dual-cure restorative composites can reduce shrinkage stresses without negatively affecting the degree-of-cure or mechanical properties (elastic modulus and flexural strength).
IMPLEMENTASI KOOPERATIF TIPE NHT UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR PASSING BOLA BASKET
Authors: Pranatha I Wayan Oka
Published: March 2019

Penelitian ini bertujuan untuk meningkatkan aktivitas dan hasil belajar teknik dasar passing bola basket melalui implementasi model pembelajaran kooperatif tipe NHT pada siswa kelas X AP3 SMK Negeri 2 Singaraja Tahun Pelajaran 2017/2018. Penelitian ini adalah penelitian tindakan kelas, dengan bentuk guru sebagai peneliti. Data dianalisis menggunakan analisis statistik deskriptif. Subjek penelitian yaitu siswa kelas X AP3 SMK Negeri 2 Singaraja, yang berjumlah 35 siswa, terdiri dari 13 siswa putri dan 22 siswa putra. Hasil analisis data penelitian didapatkan aktivitas belajar teknik dasar passing bola basket mengalami peningkatan 33,2% pada observasi awal ke siklus I. Kemudian meningkat sebesar 28,5% dari siklus I ke siklus II. Dan meningkat sebesar 61,8% dari observasi awal ke siklus II. Sedangkan hasil belajar teknik dasar passing bola basket mengalami peningkatan sebesar 42,8% dari observasi awal ke siklus I. Kemudian meningkat sebesar 37,2% dari siklus I ke siklus II. Dan meningkat sebesar 81,0% dari observasi awal ke siklus II.Berdasarkan hasil analisis data dan pembahasan dapat disimpulkan aktivitas dan hasil belajar teknik dasar passing bola basket meningkat melalui Implementasi model pembelajaran kooperatif tipe NHT pada siswa kelas X AP3 SMK Negeri 2 Singaraja Tahun Pelajaran 2017/2018. Peneliti menyarankan agar guru PJOK mengimplementasikan model pembelajaran kooperatif tipe NHT karena sudah terbukti mampu meningkatkan aktivitas dan hasil belajar.
MENINGKATKAN TANGGUNG JAWAB BELAJAR MELALUI STRATEGI GIVING QUESTIONS AND GETTING ANSWERS PADA SISWA
Authors: Syafitri Rodhiyah
Published: March 2019

Penelitian ini bertujuan untuk mengetahui peningkatan tanggung jawab belajar siswa melalui strategi giving questions and getting answers. Penelitian ini adalah penelitian tindakan kelas dengan subjek penelitian adalah siswa kelas III B SD Laboratorium Undiksha sebanyak 35 orang. Pengumpulan data dalam penelitian ini dilakukan dengan metode kuesioner. Data yang telah didapatkan selanjutnya dianalisis dengan menggunakan metode analisis deskriptif kuantitatif. Data hasil penelitian siklus I menunjukkan tanggung jawab belajar siswa secara klasikal mencapai 58,04% pada kategori cukup tinggi. Pada siklus II secara klasikal mencapai 66,69% pada kategori tinggi. Dengan demikian peningkatan tanggung jawab belajar siswa mencapai 8,65%. Hasil penelitian ini menunjukkan bahwa tanggung jawab belajar siswa dapat meningkat melaui strategi giving questions and getting answers.
Korelasi Antara Motivasi Belajar Dan Sikap Tanggung Jawab Dengan Hasil Belajar IPA
Authors: Lestari Pitri Ari
Published: March 2019

Penelitian ini bertujuan untuk mengetahui korelasi yang signifikan antara motivasi belajar dan sikap tanggung jawab dengan hasil belajar IPA siswa kelas V SD Gugus III Kuta Utara Tahun Pelajaran 2017/2018. Jenis Penelitian ini adalah penelitian ex post facto yang bersifat korelasional dengan teknik korelasi product moment dan korelasi ganda. Populasi penelitian ini adalah seluruh siswa kelas V SD Gugus III Kuta Utara yang berjumlah 527 orang siswa. Pengambilan sampel menggunakan teknik proporsional random sampling sehingga diperoleh sampel dengan jumlah 225 orang siswa. Data penelitian dikumpulkan dengan menggunakan metode nontes yaitu dengan instrumen dalam bentuk angket motivasi belajar,sikap tanggung jawab dan metode dokumentasi untuk data hasil belajar IPA. Data hasil penelitian dianalisis menggunakan metode analisis statistik inferensial dengan teknik analisis korelasi product moment dan teknik analisis korelasi ganda. Uji prasyarat yaitu uji normalitas sebaran data dalam penelitian ini menggunakan kolmogorov smirnov. Hasil analisis diperoleh bahwa rx1yhitung=0,293>rxy tabel=0.138 pada taraf signifikansi 5% yang berarti rxyhitung>rxytabel,sehingga H1 yang menyatakan terdapat korelasi yang signifikan antara motivasi belajar dengan hasil belajar diterima, dan rx2y hitung=0,299>rxy tabel =0,138 yang berarti rxy hitung > rxy tabel, sehingga H1 yang menyatakan terdapat korelasi yang signifikan antara sikap tanggung jawab dengan hasil belajar diterima. rx1x2y hitung =0,324>rxy tabel=0,138 yang berarti rx1x2y hitung>rxy tabel, sehingga H1 yang menyatakan terdapat korelasi yang signifikan antara motivasi belajar dan sikap tanggung jawab dengan hasil belajar diterima. Hasil ini berarti dapat disimpulkan bahwa Terdapat korelasi yang signifikan antara motivasi belajar dengan hasil belajar IPA pada siswa kelas V SD Gugus III Kuta Utara Tahun Pelajaran 201/2018, Terdapat korelasi yang signifikan antara sikap tanggung jawab dengan hasil belajar IPA pada  siswa kelas V SD Gugus III Kuta Utara Tahun Pelajaran 201/2018, terdapat korelasi antara motivasi belajar dan sikap tanggung jawab dengan hasil belajar IPA siswa kelas V SD Gugus III Kuta Utara Tahun Pelajaran 2017/2018
Hubungan Antara Kecerdasan Emosi dengan Tingkat Stress Mahasiswa Bimbingan Konseling yang sedang Menjalani Tugas Akhir
Authors: Putra Agustinus Goldi Anggara , Danny Tritjahjo , Windrawanto Yustinus
Published: March 2019

Setiap manusia yang berada di dalam belahan dunia manapun pasti memiliki masalah di dalam hidupnya dan mereka harus menyelesaikan masalah – masalah itu dengan kemampuan dan rasa percaya diri yang tinggi. Stanley Hall mengemukakan bahwa masa remaja merupakan 'masa badai dan tekanan' (storm and stress). Banyak dari mereka mengalami stress hingga depresi karena dianggap sudah bias menyelesaikan masalah mereka sendiri. Mahasiswa merupakan remaja yang sangat rentan mengalami stress. Penelitian ini bertujuan untuk mengetahui hubungan antara kecerdasan emosi dengan tingkat stress mahasiswa bimbingan konseling yang sedang menjalani tugas akhir. Subyek penelitian yang digunakan adalah mahasiswa Bimbingan dan Konseling Universitas Kriten Satya Wacana yang sedang mengerjakan tugas akhir berjumlah 56 orang, penulis menggunakan teknik total sampling. Teknik pengambilan sampel yang digunakan adalah teknik Total Sampling. Metode analisis data yang digunakan adalah Kendall Tau dengan bantuan SPSS Windows 20.0. berdasarkan Analisis data, hasilnya didapatkan koefisien rᵪᵧ = 0,063 dengan p = 0,588 > 0,05. Dengan demikian, dapat disimpulkan bahwa tidak terdapat hubungan yang signifikan antara kecerdasan emosi dengan tingkat stress mahasiswa bimbingan dan konseling yang sedang menjalani tugas akhir
Keefektifan Media Komik Strip terhadap Peningkatan Kemampuan Menulis Karangan Sederhana Siswa Kelas III
Authors: Pratiwi Dwi Sabti
Published: March 2019

Penelitian ini bertujuan untuk mengetahui keefektifan media komik strip terhadap kemampuan menulis karangan sederhana siswa kelas III SDN Kedungmundu Semarang. Penelitian ini adalah penelitian kuantitatif dengan desain Pre-Experimental dengan jenis One Group Pretest-Posttest. Teknik sampel yang digunakan adalah nonprobability sampling dengan jenis sampling jenuh. Populasi dalam penelitian ini adalah seluruh siswa kelas III SDN Kedungmundu Semarang tahun ajaran 2017/2018. Hasil dari penelitian ini menunjukkan bahwa media komik strip efektif terhadap kemampuan menulis karangan sederhana yang dibuktikan dengan thitung=4,482> ttabel=1,697.
Pengaruh Model Pembelajaran Kooperatif Tipe Scramble Berbantuan LKS Terhadap Hasil Belajar IPA
Authors: Andriyani P. I. , Tegeh I Made , Suwatra I W.
Published: March 2019

Penelitian ini bertujuan untuk mengetahui perbedaan yang signifikan hasil belajar IPA antara kelompok siswa yang dibelajarkan dengan model pembelajaran kooperatif tipe scramble berbantuan LKS dan kelompok siswa yang dibelajarkan dengan pembelajaran konvensional pada siswa kelas V semester II di SD Gugus XIV Kecamatan Buleleng Tahun Pelajaran 2017/2018. Penelitian ini merupakan penelitian eksperimen dengan desain kuasi eksperimen dengan rancangan non-equivalent post-test only control group design. Populasi penelitian ini adalah seluruh siswa kelas V di SD Gugus XIV Kecamatan Buleleng yang berjumlah 134 orang. Sampel penelitian ini adalah siswa kelas V SDN 2 Tukadmungga yang berjumlah 21 orang sebagai kelompok eksperimen dan siswa kelas V SDN 3 Tukadmungga yang berjumlah 20 orang sebagai kelompok kontrol. Data hasil belajar IPA siswa diperoleh melalui metode tes pilihan ganda dan analisis uji-t. Berdasarkan analisis uji hipotesis dengan uji-t, diperoleh thitung = 6,078 pada taraf signifikansi 5% dengan derajat kebebasan (dk=39) diperoleh ttabel = 2,021, sehingga diketahui nilai thitung > ttabel maka h0 ditolak dan h1 diterima. Hal ini menunjukkan bahwa terdapat perbedaan yang signifikan hasil belajar IPA siswa antara kelompok siswa yang dibelajarkan dengan model pembelajaran kooperatif tipe scramble berbantuan LKS dan kelompok siswa yang dibelajarkan dengan pembelajaran konvensional pada siswa kelas V Semester II di SD Gugus XIV Kecamatan Buleleng Tahun 2017/2018. Selain itu, diperoleh Mean (M) kelompok eksperimen lebih besar dari kelompok kontrol (21,14 > 13,9), sehingga dapat dikatakan bahwa hasil belajar IPA siswa pada kelompok eksperimen lebih baik daripada kelompok kontrol. Dengan demikian, dapat disimpulkan bahwa model pembelajaran kooperatif tipe scramble berbantuan LKS berpengaruh terhadap hasil belajar IPA siswa kelas V Semester II di SD Gugus XIV Kecamatan Buleleng Tahun 2017/2018.
Pengaruh Model Pembelajaran Time Token Berbantuan Media Audio Visual Terhadap Hasil Belajar IPS
Authors: Tamara Ni Md. Tita , Suarjana I Md.
Published: March 2019

Penelitian ini dilaksanakan untuk mengetahui perbedaan hasil belajar IPS antara dua kelompok siswa, yaitu kelompok siswa yang dibelajarkan dengan model pembelajaran Time token berbantuan media Audio visual dan kelompok siswa yang dibelajarkan dengan pembelajaran konvensional pada siswa kelas V SD di Gugus III Kecamatan Sukawati Tahun Pelajaran 2017/2018. Jenis penelitian ini adalah penelitian eksperimen semu (quasi experiment) dengan rancangan penelitian nonequivalent post-test only control group design. Populasi dalam penelitian ini adalah seluruh siswa kelas V SD di Gugus III Kecamatan Sukawati yang masih menggunakan Kurikulum Tingkat Satuan Pendidikan. Pengambilan sampel dilakukan dengan teknik random sampling, kelompok siswa yang menjadi sampel adalah siswa kelas V SD Negeri 2 Batuan Kaler dan siswa kelas V SD Negeri 4 Batuan. Metode pengumpulan data hasil belajar IPS pada penelitian ini menggunakan metode tes. Data hasil belajar IPS yang diperoleh dianalisis menggunakan statistik inferensial dengan analisis uji-t (polled varians). Berdasarkan hasil analisis data, diperoleh thitung sebesar 5,231 dan ttabel pada taraf signifikansi 5% sebesar 2,000. Hal ini berarti, thitung lebih besar dari ttabel (thitung > ttabel). Dilihat dari perolehan rata-rata skor hasil belajar antar kedua kelompok, diperoleh bahwa rata-rata skor hasil belajar kelompok siswa yang dibelajarkan dengan model pembelajaran Time token berbantuan media Audio visual lebih besar yaitu 21,46 dibandingkan dengan rata-rata skor hasil belajar kelompok siswa yang dibelajarkan dengan pembelajaran konvensional yaitu 15,81. Jadi dapat disimpulkan bahwa model pembelajaran Time token berbantuan media Audio visual berpengaruh positif terhadap hasil belajar IPS pada siswa kelas V SD di Gugus III Kecamatan Sukawati Tahun Pelajaran 2017/2018
Implementasi Lesson Study Sebagai Upaya Peningkatan Kemampuan Mengajar Dosen Muda
Authors: Roffiq Ainoer , Supriyanto Achmad , . Burhanuddin
Published: March 2019

Penelitian ini bertujuan untuk menganalisis proses lesson study sebagai upaya membina para dosen muda untuk meningkatkan kualitas mengajar. Hasil penelitian pada tahap perencanaan ditemukan beberapa kendala yang dihadapi dosen model saat mengajar, diantaranya tidak percaya diri mengajar mahasiswa, kurang pengalaman, penggunaan metode serta media yang monoton, serta teknik penilaian yang belum sesuai. Pada tahap implementasi, ditemukan beberapa kelemahan yang harus diperbaiki, seperti penggunaan media dan teknologi pembelajaran, serta kemampuan memaparkan materi saat sesi ceramah. Sebagai tahapan berikutnya yakni tahapan refleksi, dilaksanakan forum group discussion (FGD) yang menghasilkan perbaikan untuk perencanaan serta implementasi tahap berikutnya
Analisis Faktor-Faktor yang Mempengaruhi Kesiapan Kerja Pramusaji untuk Meningkatkan Kualitas Pelayanan pada El Patio Restaurant di Melia Bali
Authors: Suastini Ni Made
Published: March 2019

Kesiapan kerja merupakan persyaratan pengetahuan, sikap dan keterampilan yang harus dimiliki karyawan sebelum memulai pekerjaan untuk dapat memberikan pelayanan yang berkualitas kepada tamu. Penelitian ini dilakukan di El Patio Restaurant Melia Bali, yang bertujuan untuk mengetahui faktor-faktor apa saja yang menyebabkan menurunnya kualitas pelayanan di El Patio Restaurant. Penelitian ini menggunakan analisis mix method yaitu dengan mengkuantitatifkan data kualitatif dan mengkualitatifkan data kuantitatif dengan menyebarkan 15 kuesioner kepada pramusaji untuk menilai dirinya sendiri dan 15 kuesioner kepada manajer untuk menilai setiap pramusaji. Hasil penelitian ini menunjukkan bahwa terdapat beberapa aspek pada pengetahuan, sikap dan keterampilan pramusaji yang masih kurang. Hal tersebut menjadi faktor-faktor yang mempengaruhi menurunnya kualitas pelayanan di El Patio Restaurant khususnya pada kesiapan kerja, diantaranya adalah: (1) Berbicara dalam Bahasa Inggris, (2) Kemampuan dalam memberikan penjelasan ingredients menu di El Patio Restaurant, (3) Kemampuan dalam memberikan penjelasan tentang method of cooking dari setiap menu, (4) Etika terhadap rekan kerja, atasan dan tamu, (5) Kemampuan mengendalikan emosi, (6) Kemauan menerima masukan, arahan dan kritikan, (7) Terampil menjaga dan memelihara kebersihan peralatan. Kata kunci : Pramusaji, Kesiapan Kerja, Kualitas Pelayanan
Pengembangan Media Puzzle Susun Kotak Pada Tema Ekosistem
Authors: Darmawan Lutfi Andi , Reffiane Fine , Baedowi Sunan
Published: March 2019

Latar belakang penelitian ini adalah penggunaan media pembelajaran yang masih rendah. Media puzzle susun kotak dapat digunakan untuk mendukung kegiatan pembelajaran dan meningkatkan konsentrasi belajar siswa. Tujuan penelitian ini adalah untuk mengetahui kevalidan dan kepraktisan media puzzle susun kotak yang digunakan untuk siswa kelas V sekolah dasar. Jenis penelitian ini adalah penelitian dan pengembangan dengan menggunakan prosedur pengembangan model ADDIE.  Penelitian ini dilaksanakan pada 3 sekolah dasar yaitu SD Negeri 2 Dermolo, SD Negeri 1 Balong dan SD Negeri 2 Balong. Hasil uji kevalidan diperoleh dari penilaian ahli media sebesar 99% (baik sekali) dan penilaian ahli materi  sebesar 98% (baik sekali). Sedangkan hasil uji kepraktisan diperoleh dari penilaian respon guru sebesar 98% (baik sekali) dan penilaian respon siswa sebesar 96% (baik sekali). Kesimpulannya bahwa media puzzle susun kotak valid dan praktis digunakan untuk siswa kelas V sekolah dasar.
Curso de nivelación algebraica para incrementar el rendimiento académico en estudiantes de ingeniería en un ambiente virtual de aprendizaje / Algebraic Leveling Course to Increase Academic Performance in Engineering Students in a Virtual Learning Environment
Authors: Díaz Perera Juan José , De Luna Flores María del Carmen , Salinas-Padilla Heidi Angélica
Published: March 2019

El propósito de este estudio fue determinar la influencia que tuvo el desarrollo de un entorno virtual de aprendizaje con contenidos básicos de álgebra en estudiantes de la materia de Matemáticas II en el tema de diferenciación. La investigación fue cuasi experimental con pretest y postest; la muestra se integró de estudiantes de primer semestre de la carrera de Ingeniería Petrolera de la Universidad Autónoma del Carmen en el periodo de agosto-diciembre del 2017. Esta muestra fue subdividida en dos grupos: el primero con 24 estudiantes correspondientes al grupo experimental y el segundo con 41 estudiantes para el grupo control. La realización del pretest consistió en una prueba objetiva de opción múltiple, con la cual se determinó que ambos grupos fueron homogéneos al inicio del experimento. Se desarrolló un entorno virtual de aprendizaje tomando como modelo de diseño instruccional la estructura Análisis, Diseño, Desarrollo, Implantación y Evaluación (ADDIE). Tras la implementación del entorno virtual se aplicó una prueba postest, con reactivos similares a los establecidos en la primera prueba.Como parte de los resultados se registró que ambos grupos dejaron de ser homogéneos; el grupo experimental resultó favorecido. Además, se aplicó una prueba departamental correspondiente al tema de diferenciación en ambos grupos, se correlacionaron los resultados de la prueba con los obtenidos en el curso virtual y se obtuvo una correlación positiva moderada. De igual forma, al realizar la comparación de ambos grupos, se pudo establecer que el grupo experimental tuvo un mejor rendimiento académico que el grupo control. En relación con la apreciación que los estudiantes tuvieron con respecto al uso de los entornos virtuales de aprendizaje, manifestaron una apreciación positiva e indicaron que el entorno virtual había apoyado su aprendizaje.
Consumer Preferences for The Design of Smoked Fish Packaging Using Conjoint Analysis
Authors: Izzhati Dwi Nurul , Mastrisiswadi Hasan , Jazuli J. , Talitha Tita
Published: March 2019

Research on smoked fish packaging has only focused on its functional side to increase product life. Meanwhile, research on smoked fish packaging design that focuses on improving and expanding markets has never existed. Until now, smoked fish was sold without packaging even though the amount of production continued to increase. The purpose of this study was to determine consumer preferences for the design of smoked fish packaging. With the recognition of these preferences, it is expected that the smoked fish industry players can apply it so that it can increase the sale value and the number of sales. This study uses focus group discussion as a qualitative method and conjoint analysis as a quantitative method. Color, material, shape, size, brand, and additional information is the attribute chosen at the focus group discussion as a representation of smoked fish packaging to determine the level of its preference. The results of this study indicate that brands have the highest preference compared to others (importance values 30.303%).
The Agreedness between Observation and Self-report Method in Work Posture Analysis
Authors: Widyanti Ari
Published: March 2019

Work posture analysis plays an important role in providing safe and productive workplace, through minimizing musculoskeletal symptoms or disorders. The postural analysis can be conducted through observation, direct, and self-report method. Each has their advantages and disadvantages. Purpose of this study is to compare obervation and self-report analysis in the context of degre of agreenes. One rater observes and gives rating to the fifteeen work postures in an automotive service company using Rapid Entire Body Assessment (REBA) and Rapid Upper Limb Assessment (RULA). In addition, six workers in the automotive service company also fill out the Nordic questionnaire as a self-report of musculoskeletal symptoms or disorders. Descriptive analysis is conducted to compare the musculoskeletal symptoms using both observer and self-report analysis. Results show that RULA is slighlty better than REBA in accordance to the Nordic questionnaire’ result. Implications of the result is discussed.
Mathematical Creative Thinking Ability of Junior High School Students in Solving Open-Ended Problem
Authors: Damayanti Herwinanda Trisnaning , Sumardi Sumardi
Published: March 2019

The study aims to describe the ability of mathematical creative thinking on the aspects of fluency, flexibility, and originality in solving open-ended problem of Linear Equations with One Variable. The subjects are 7th grade students of one private junior high school in Surakarta, Central Java, Indonesia. The data was collected by the test, interview, and documentation. The method of data validation was used triangulation, i.e. techniques and resources. The analysis technique of the data was used an interactive method that consists of the reduction, presentation, and conclusion. The result of the research shows that the fluency aspect achieved by the students ability to mention the possibility of other answers. Then, the flexibility aspect is showed by the students use different method to solve the problem, or at least use the appropriate method. The originality aspect is showed by the students‘ ability to make the problem which are rarely found by other students.
Mathematical Representation Ability of Senior High School Students: An Evaluation from Students’ Mathematical Disposition
Authors: Fitrianna Aflich Yusnita , Dinia Sofie , Mayasari Mayasari , Nurhafifah Astri Yuliani
Published: March 2019

The purpose of this study is to describe students’ ability in solving mathematical representation problems evaluated from mathematical disposition.  The subjects are three students of 10th grade of public senior high school (PSHS) in Padalarang, West Java, Indonesia. They were selected from 35 students with high, medium, and low mathematical disposition ability. The results of the study showed that almost all of the students able to use visual representation to solve mathematical problems, and create mathematical models and solve problems by involving mathematical expressions. In contrast, most of students could not fulfill two indicators of the mathematical representation ability, i.e. creating the sketch of geometric patterns and making the mathematical model based on the situation and data given.
Mathematical Creative Thinking and Student Self-Confidence in the Challenge-Based Learning Approach
Authors: Nufus Hayatun , Duskri Muhammad , Bahrun Bahrun
Published: March 2019

The new curriculum (K13) requires a teacher to develop students’ ability in order to learn and fully understand Mathematics. The important abilities needed for a student in understanding Mathematics are the creative thinking and self-confidence. The certain study is essential in order to enhance students’ ability of mathematical creative thinking and self-confidence. Challenge-Based Learning is not only demanding a student to discover a solution to a problem, but also to be confident in what he has done. The qualitative method is used in this research to describe the students’ mathematical creative thinking ability and self-confidence. The subjects are six students chosen from 21 students of seventh grade at one of Junior High Schools in Aceh, Indonesia. They are the student with high, moderate, and low creative thinking ability. The research instrument is a test for creative thinking ability, a questionnaire of self-confidence and an interview guideline. The result indicates that the students with high and moderate level meet at least three indicators of creative thinking ability. They are also confident in solving the problem. In contrast, the student with low level did not reach any indicators of creative thinking ability and have poor self-confidence.  Keywords: Challenge-based Learning, Creative thinking ability, Self-confidence.
Improving the Conceptual and Procedural Knowledge of Prospective Teachers through Multisensory Approach: Experience from Indonesia
Authors: Yurniwati Yurniwati
Published: March 2019

Abstract. In mathematics, there is conceptual and procedural knowledge. Conceptual knowledge is about ideas or mathematics understanding but procedural knowledge is about procedure to solve mathematics problems. Multisensory approach involve many senses like kinaesthetic,  visual and auditory to gain knowledge. This research aims to find information about how to apply multisensory approach to improve conceptual and procedural knowledge of prospective teacher in Jakarta State University. This action research study used Kemmis and Taggart model and implemented in two cycles. The data were collected through questionnaires and observation sheets. Then, the data was analyzed descriptively.  The research results showed that the multisensory approach can enhance the conceptual and procedural knowledge of the prospective teachers. The Kinaesthetic approach was implemented in hands-on activity using concrete materials while the visual using images. The concrete materials and image provide different presentation but it helped to constructed concepts and abstraction. Furthermore, the auditory approach was developed along learning activities trough discussion to produce and clarify the ideas. Keywords: Conceptual knowledge, Procedural knowledge, Multisensory approach