bluuebunny/crossref_metadata_2025 huggingface dataset:
Оптическая характеризация структурных и электрических свойств нанослоев n-GaP, выращенных на проводящих подложках (001) n-GaP
Authors: Байрамов Б.Х. , Топоров В.В. , Байрамов Ф.Б.
Published: October 2020

Сообщается о результатах исследования структурных и электрических свойств гомоэпитаксиального наномасштабного слоя (001) n-GaP, толщиной 70 nm, выращенного методом газофазной эпитаксии из металлоорганических соединений на проводящей сильнолегированной подложке кристалла n-GaP, ориентированного по оси (001). В спектре рамановского рассеяния света такого нанослоя n-GaP в образце n-GaP/n-GaP (001) в сравнении со спектром высокоомного кристаллического образца (001) si-GaP удалось обнаружить две достаточно узкие линии, приписанные колебаниям поперечных TO()- фононов и высокочастотным продольным связанным плазмон-фононным LO()+ колебаниям. При этом установлено, что спектральные параметры LO()+ колебаний как в нанослое n-GaP, так и в подложке (001) n-GaP существенно отличаются между собой, а также и от спектральных параметров линии продольных оптических LO()- фононов. Анализ выявленных строгих количественных особенностей спектральных параметров позволил получить ценную информацию о совершенстве кристаллической структуры наномасштабного гомоэпитаксиального слоя (001) n-GaP. Помимо этого, показано что, численные расчеты на основе микроскопической модели рассеяния света LO()+ колебаниями, обусловленного механизмами деформационного потенциала и электрооптическим рассеянием, позволили бесконтактным и неразрушающим образом определить онцентрацию n и подвижность μ свободных носителей заряда гомоэпитаксиального слоя наномасштабной толщины и проводящей сильнолегированной подложки. Полученные значения оказались nhepi=(3.25±0.1)·1017 cm-3 и подвижности μhepi=(40.0±0.1) cm2·V-1·s-1 для гомоэпитаксиального слоя (001) n-GaP в сравнении с nsubs=(2.52±0.1)·1017 cm-3 и μsubs=(51.0±0.1) cm2·V-1·s-1 для подложки (001) n-GaP образца n-GaP/n-GaP (001). Ключевые слова: гомоэпитаксиальный наномасштабный слой (001) n-GaP, сильнолегированная подложка, концентрация и подвижность носителей заряда.
Распределение дислокаций несоответствия и упругих механических напряжений в метаморфных буферных слоях InAlAs разной конструкции
Authors: Побат Д.В. , Соловьев В.А. , Чернов М.Ю. , Иванов С.В.
Published: October 2020

Here we report on computing of the distribution of the equilibrium misfit dislocation density ρ(z) as well as the elastic strain ε(z) along the grow direction for metamorphic buffer layer InAlAs/GaAs(001) with high In content (x ≤ 0.87) and different design of composition profile: step-, linear- and convex-graded. For the computation, an approach based on the iterative finding the system total energy minimum have been used. It was shown, that the significant difference between different types of the buffer layer is observed for the ρ(z) distribution rather than for ε(z). In contrast to traditionally used step- and linear-graded metamorphic buffer layers, which are characterized by homogenous spreading of misfit dislocations, the main part of such dislocations in the convex-graded composition profile is concentrated at the bottom part of the buffer layer near to heterointerface InAlAs/GaAs, and the dislocation density drop by more than one order of magnitude along the layer thickness reaching near the surface the minimal value among the buffer types. Despite the fact, that the significant effect of interaction between misfit dislocations is not taken into account in the computation, the results obtained allowed one to determine the main features of the ρ(z) and ε(z) distributions in the different InAlAs metamorphic buffer layers, which were previously obtained experimentally. Thus, such an approach can be effectively utilized for the development of the metamorphic heterostructure based devices.
Квазиодномерные модели Изинга с дефектами типа "случайное локальное поле": фаза Имри-Ма в пространствах размерности, большей нижней критической
Authors: Берзин А.А. , Морозов А.И. , Сигов А.С.
Published: October 2020

Исследована фазовая диаграмма "температура--концентрация дефектов" квазиодномерных моделей Изинга с дефектами типа "случайное локальное поле". Изучено противоборство тенденции к возникновению дальнего порядка вследствие слабого взаимодействия между одномерными спиновыми цепочками и тенденции к образованию фазы Имри-Ма, в которой параметр порядка следует за флуктуациями случайного поля, созданного дефектами. Показана возможность возникновения фазы Имри-Ма в ситуации, когда размерность пространства превосходит нижнюю критическую размерность. Рассмотрен вопрос о наличии дальнего порядка в модели Изинга со случайными полями в пространстве с критической размерностью dl=2. Ключевые слова: дефекты типа "случайное локальное поле", квазиодномерная модель Изинга, фазовая диаграмма, фаза Имри-Ма.
Модельные оценки свойств флюорографена
Authors: Давыдов С.Ю.
Published: October 2020

Green’s function method together with the tight-binding approach are used to get analytical estimations for the electron bands dispersions. The parabolic approximation is proposed which permits to find carriers effective masses and quantum capacitance. With the use of the Koster – Slater and Haldane – Anderson models the problem on the local states of vacancies is considered. Analytical estimates of the specific phonon frequencies and elastic constants are given. The obtained results are compared with the data available.
RESPONSE OF HYPOTHYROIDISM TO HOMEOPATHIC TREATMENT: A REPORT OF THREE CASES
Authors: DOGRA SOUMYABRATA , MANDAL PRATIMA
Published: October 2020

Objectives:Hypothyroidism is a disease in which the thyroid gland does not produce enough thyroid hormone.It is the second most common endocrine disorder among women.Common causes are autoimmune disease such as Hashimoto’s thyroiditis, surgical removal of the thyroid and radiation therapy.Symptoms of Hypothyroidism include weight gain, alteration in cognition, fatigue, infertility and menstrual abnormalities.Thyroid stimulating hormone is highly sensitive to thyroid dysfunction and is used to evaluate thyroid disorders.Monotherapy with Levothyroxine is the standard for treating hypothyroidism in the conventional method.Apart from coventional method of treatment homoeopathy also has a scope in the treatment of hypothyroidism.

Methods: This is a series of three cases which presented with symptoms of Hypothyroidism thoroughly evaluated and treated with constitutional homoeopathic medicine in a variable period of time.Assesment of thyroid stimulating hormone was done to see the improvement in the cases .

Results: A marked improvement in the clinical symptoms as well as the pathological report was observed.

Conclusion: This case series shows that Homoeopathic intervention can be used in the treatment of Hypothyroidism.
Silencio de la administración en los derechos uruguayo y argentino
Authors: Goldfarb Mauricio
Published: October 2020

El silencio de la administración es un instituto del Derecho Administrativo en el que a la falta de respuesta del ente público se le asigna un significado, por lo general desestimatorio. Los sistemas administrativos uruguayo y argentino poseen importantes similitudes y algunas diferencias en su regulación. En este artículo se comparan críticamente ambos sistemas y se exponen sus diferencias y puntos en común.
El efecto de los paquetes tecnológicos en la productividad del maíz en Ecuador
Authors: Sánchez Arizo Víctor Hugo , Fernández Sastre Juan
Published: October 2020

El presente artículo analiza el efecto de la adopción del maíz híbrido en la productividad por hectárea, utilizando datos de 1 622 productores de Ecuador. En particular, se estudia si existen diferencias entre los productores que lo adoptaron por cuenta propia, frente a los que lo hicieron a través de un paquete tecnológico–parcialmente subvencionado por el Estado–, que además de la semilla híbrida incluía tecnologías complementarias, capacitaciones y asistencias técnicas. Los resultados indican que la adopción de semilla híbrida influyó positivamente en la productividad por hectárea, independiente de que ésta fuese adoptada por cuenta propia o a través del paquete tecnológico; aunque el efecto fue mayor sin duda para los productores que adoptaron el paquete tecnológico.
Desafíos del desarrollo en la provincia de Río Negro, Argentina
Authors: Núñez Paula Gabriela , Lara Michel Carolina , Conti Santiago
Published: October 2020

El artículo explora el desarrollo rural en la región norpatagónica andina de la provincia de Río Negro, Argentina. Analiza un área ambiental adecuada para un desarrollo rural extensivo que no termina de integrarse como área productiva. Vincula las dificultades del presente a contradicciones estructurales de su incorporación regional a las administraciones nacional y provincial. Indaga los términos significativos que marcaron las políticas territoriales observando el modo en que las mismas consideraron a los habitantes de la región y sus actividades. Expone cómo los límites a las dinámicas de integración se sostienen en modelos de crecimiento que, desde las nociones de progreso, desarrollo e innovación, han omitido reconocimientos a los actores productivos locales
Tomato seed value chain analysis and seed conditioning among seed companies in Uganda
Authors: Tusiime Sharon M. , Nonnecke Gail R. , Jensen Helen H.
Published: October 2020

Tomatoes increase nutritional food security and income among Ugandan smallholder farmers who have limited access to high quality seed. The objective of this study was to analyze the current tomato seed value chain for Uganda. Survey responses determined roles of key participants, including Ministry of Agriculture, Animal Industry and Fisheries (MAAIF) for regulation and certification; National Agricultural Research Organization for breeding cultivars and seed multiplication; Makerere University for education and research; commercial seed companies for seed importation and conditioning; seed distributors for sales; and smallholder farmers as savers and end users of seed. Challenges included an inefficient domestic seed distribution system, technical constraints in seed production and conditioning by seed companies, inadequate networks and communication among the seed industry’s key participants, and partial regulation of the seed industry. Seed companies played a key role in seed conditioning processes. Companies imported all tomato seeds into Uganda and stated germination as their primary goal for quality. Challenges for seed companies included assistance from MAAIF to regulate and certify seed and access to improved technologies. Attaining high quality seed by commercial Uganda-parent companies will require additional investment and training of seed technologists for domestic testing and seed quality assurance.
Trends of non-financial corporations listed on Borsa Istanbul: Rethinking corporate ownership and governance under COVID-19
Authors: Atici Gonca , Gursoy Guner
Published: October 2020

The purpose of this study is to analyze trends of non-financial corporations listed on Borsa Istanbul (BIST) in terms of ownership structure for the period of 2002-2019. According to our findings, Turkish non-financial corporations reveal a concentrated nature as an example of family capitalism. Findings also reveal that initial public offerings are mainly from family-controlled corporations. This is noteworthy as corporations integrate more to the capital markets of Turkey. Besides, they get more disciplined as they subject to the regulations of the governing bodies and internalise corporate governance criteria. In terms of ownership mix, findings denote that non-financial corporations listed on BIST benefit from the advantages of conglomerates, cross-ownership, and foreign ownership in line with the literature. Contrary to several emerging economies, state-ownership has a minor share which renders strength and quality of governance level. The concentrated nature of corporations is believed to have a positive effect on governance mechanisms for controlling agency problems especially in the environment of uncertainty during COVID-19. Although Turkish capital markets have promising and progressing corporate governance mechanisms, steps to build up advanced digital governance mechanisms for the “digital new normal” should be taken as soon as possible.
Pengaruh Perbedaan Keterangan Saksi Jarimah Zina (Perpektif Hukum Positif dan Hukum Pidana Islam)
Authors: Haq Islamu
Published: October 2020

This study aims to examine the influence of witnesses' different opinion in adultery jarimah verification on suspect determination between positive law and Islamic criminal law perspectives.This research adapts library research (library research) conducted through reading, understanding books, theses,  dissertations, websites and other literature related to problems by content analysis and the comparative approach between positive law and Islamic criminal law. The results of this study indicates that in a positive law, different witness testimonies can release a suspect from a guilty charge especially if the crime of adultery is lone standing criminal  (Zelfstanding Delict). In the case of act of continuing (voortgezette handeling), differences in the testimony of witnesses does not make witness statements denied as long as the difference in witness testimony does not exceed the set limits. In Islamic Criminal Law, If there are differences in the statements of the four witnesses, all witnesses' opinions cannot be accepted unless the differences of opinion regarding time and place are not far apart. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh perbedaan pendapat saksi dalam pembuktian jarimah zina terhadap penetapan tersangka persfektif hukum positif dan hukum pidana Islam.  Penelitian ini merupakan penelitian kepustakaan (library research), yaitu metode yang menggunakan riset kepustakaan baik melalui membaca, memahami buku-buku, tesis, disertasi, website maupun literatur lainnya yang sifatnya pustaka terkait dengan permasalahan dalam rangka memperoleh data, menggunakan analisis kontent (content analyzis ) dan metode komparasi antara hukum positif dan hukum pidana Islam. Hasil penelitian ini menunjukkan bahwa dalam hukum positif perbedaan keterangan saksi  dapat membebaskan tersangka dari tuntutan bersalah, khususnya jika tindak pidana zina tersebut merupakan tindak pidana yang berdiri sendiri (Zelfstanding Delict). Berbeda jika tindak pidana zina merupakan perbuatan berlanjut (voortgezette handeling) perbedaan keterangan saksi tidak menjadikan keterangan saksi ditolak sepanjang perbedaan keterangan saksi tidak melewati batas yang telah ditetapkan. Dalam Hukum Pidana Islam Jika terjadi perbedaan keterangan pada keempat saksi, maka semua pendapat saksi tidak dapat diterima kecuali jika perbedaan pendapat mengenai waktu dan tempat tidak berjauhan.
IMPACT OF HOTEL CLASSIFICATION IN POLAND ON THE QUALITY OF SERVICES RENDERED
Authors: Ozimek Irena , Kozłowska Justyna
Published: October 2020

A hotel facility classification system makes it possible to standardise the quality of hotel services, and should guarantee hotel compliance with predefined requirements and criteria. In order to determine the impact of a hotel’s rating in Poland on the quality of services it offers, the authors conducted a survey which covered a sample of 226 respondents. Based on the study, it was established that the classification system affects the quality of services provided by the classified properties, and that consumers of hotel services are aware of the standards and amenities which the hotels they choose should offer. However, it is important to indicate that nearly half of the respondents noted that a hotel’s category does not always guarantee that the appropriate standard required by law is being maintained.
SHEEP MEAT PRODUCTION IN AUSTRIA AND POLAND – SIMILARITIES AND DIFFERENCES
Authors: Rokicki Tomasz , Ringdorfer Ferdinand
Published: October 2020

The aim of the article was to compare sheep meat production in Austria and Poland. The level of sheep population in both countries was similar. The sources of the materials were a literature review and data obtained from Statistics Austria and Statistics Poland. The research period concerned the years 1992–2018. Methods of data analysis were used, such as constant dynamics indicators, Gini coefficient and Lorenzo curve, Pearson correlation coefficients. A number of differences were found, e.g. in the direction of changes in the size of the sheep population, the scale of total slaughtering and industrial slaughtering, the share of self-supply in total meat production, traditional consumption of lamb during holidays, the average carcass weight of sheep, prices of lamb meat, interdependence of the sheep population with changes in economic parameters. The similarities concerned the level of concentration of the sheep population and their regional slaughtering, prejudices regarding the consumption of lamb, the share of lambs in slaughtering and meat production, the productivity of meat obtained from the slaughter of sheep.
Social Studies Learning With Visualization, Auditory, Kinesthetic (VAK) Learning Model Assisted by Diorama Media Increases Student Knowledge Competence
Authors: Santhi Ni Luh Komang Widya , Sri Asri I Gusti Ayu Agung , Manuaba Ida Bagus Surya
Published: October 2020

The low students’ competency of IPS (social science) is caused by the not optimal application of creative and innovative learning models and lack of learning media use. This research is aimed to analyze the impact of visualization, auditory, kinesthetic (VAK) learning model assisted with a diorama on social studies competency of elementary school students. It is quantitative research with the experimental design of quasi-experiment and non-equivalent pretest-posttest control group design. The population in this research are 275 grade IV students. Samples were taken with a random sampling technique, resulted in two classes. Class IV numbering 39 students were treated with VAK learning model assisted with diorama, and class IV numbering 37 students treated with conventional teaching and learning. Data were obtained by a common multiple-choice test and were then analyzed using polled variants t-test. It resulted the t count = 6,762 at 5% significance level with 39+37-2= 74 and t table = 1,993. Based on test criteria t count =6,726> t table =1,993. It leads to a conclusion that there is a significant influence of the VAK learning model aided with diorama media on IPS competency of grade IV students.
Improving Science Learning Outcomes Through Student Team Achievement Division (STAD)
Authors: Dewi Luh Monik Septiani , Wibawa I Made Citra , Tri Agustiana I Gusti Ayu
Published: October 2020

The low student learning outcomes of Science competencies are experienced by many students. The causes of the decline in science learning outcomes are the teacher's love for one learning method and the use of inadequate learning models so that students find it difficult to understand learning, lack of communication and participation between students which causes students to be less courageous in asking and arguing so learning is not optimal, students still lacking discipline during learning takes place. Based on the description, the purpose of this study is to determine the significant effect of the STAD Cooperative Model on Science Learning Outcomes. This study uses the design of a non-equivalent post-test only control group design with an intact group random sampling technique. The total population of this study was 95 students and the total sample in this study amounted to 49 students. The method used is a test with multiple-choice instruments totaling 20 items. The data obtained were analyzed using descriptive statistical analysis and inferential analysis with data distribution normality test, variant homogeneity test (F-Test), and hypothesis testing (t-test) using the pooled variance formula. The results of data analysis using the t-test obtained by t-count 2.540 while the table with db = 47 of 2.067 with a significance level of 5%. The results showed that there was a significant influence on the learning outcomes of science groups of students who were taught with the STAD type cooperative model with groups of students who were not taught with the STAD type cooperative model. The STAD type cooperative model makes students the center of learning through the application of the STAD type cooperative model students are motivated to compete in understanding lessons, train women in expressing opinions, discipline and take responsibility for themselves and the group.
Contextual Learning Based on Multicultural Increase Students’ Knowledge Competence in Civic Education
Authors: Sudira Ni Made Lyvia Komalasari , Wiyasa I Komang Ngurah
Published: October 2020

Civic education that has not been able to give meaning to students results in the need for innovation in learning. Learning can be realized by applying contextual learning based on multiculturalism. This research is a quasi-research with nonequivalent control group design. The population in this study amounted to 130 students, while the sample in this study amounted to 44 students taken using the Cluster Random Sampling technique. The collection in this study was a multiple-choice objective test instrument of 32 questions. Based on the analysis of the polled variance t-test obtained t-count = 3.83> t-table = 1.68 at a significance level of 5% with dk = 42, which means that H0 is rejected and Ha is accepted. This proves that there are significant differences in the competence of civic knowledge between groups of students who are taught with the Multicultural Contextual learning model and students who are taught by conventional learning. So, it can be concluded that Multicultural-based Contextual learning has a significant effect on the civic knowledge competence of elementary students. The implication of this research is through the application of Multicultural-based Contextual learning students can easily interpret the learning that is done.
Analysis of Habit Patterns in Academic Behavior in Student Learning Discussions
Authors: Mila Zulfa Maulida Noor , Setiawan Deka , Fardani Much Arsyad
Published: October 2020

The discussion method can encourage inactive students to be active and confident, but there are still some students who are not able to cooperate well. This study aimed to analyze the pattern of academic behavior habits in the learning discussion of grade 4 students. The population in this study was all grade 4 students at SD 5 Karangbener totaling 24 students including 15 girls and 9 boys. This research used data collection techniques including the stages of observation, interviews and field notes. This study used descriptive qualitative data analysis method. The results of the analysis of students 'academic behavior during the learning discussion were the classification of student behavior during discussion including praying before the lesson began, paying attention to the teacher's explanation, making material summaries, being on time in doing assignments, participating in discussions, daring to express opinions, respecting other students' opinions, writing the results of the discussion, conveying the results of the discussion confidently, reading diligently, enthusiastically taking part in learning, concentration during the learning process, diligently working on the exercises, daring to ask questions while having difficulty doing the exercises. The academic behavior of fourth grade students of SD 5 Karangbener was included in very good interpretations with behavioral indicators that have been found based on field data. The discussion method has a positive academic impact on students which can be viewed from the cognitive, affective, and psychomotor domains.
E-Module for Learning Volley Ball Using Character Based on Adobe Flash Cs6
Authors: Prasetyo Dian Estu , Handayani Fitry
Published: October 2020

The low character of students plus the absence of learning resources that support learning about basic volleyball technical skills in the Covid-19 pandemic situation makes it difficult for lecturers to teach. The purpose of this research and development was to produce a character-based volleyball e-module for students using Adobe CS 6 with valid, practical, and effective criteria. This research is a development research. This research used the ADDIE model which consists of 5 stages, namely, needs analysis (analysis), design (design), develop (develop), implement (implement), evaluate (evaluate). The research data was using quantitative data that the data were taken from the results of the evaluation by the validator and the practical data was taken from the responses of lecturers and students to the e-module. The research instruments were validation questionnaires, practicality questionnaires, student character effectiveness sheets, volleyball skills assessment effectiveness sheets. The results of the e-module research on character-based volleyball learning for students using Adobe Flash CS-6 have met the criteria of being valid, practical and effective. From these results, the e-module volleyball learning based on character education for students using adobe flash CS 6 is effective for learning, especially in volleyball lectures, namely the basic technique of volleyball.
Development of Mobile Learning for Simulation and Digital Communications
Authors: Amir Hazira Fakhrurrozi , Huda Asrul , Maksum Hasan
Published: October 2020

Simulation and digital communication subjects at SMKN 1 Singkarak do not have support other than text books and modules. This study aimed to develop a practical and effective learning platform that can support students in learning. This study used a 4D development model, and the trial subjects in this study were 31 students of class X in the 2020/2021 academic year. The instruments used were test and questionnaire instruments. The research method used was pre-experimental. The data obtained were analyzed using quantitative descriptive statistical analysis methods. From the research results, it was found that classical completeness reached 90% and the average score in terms of the gain score of students before and after using mobile learning was 0.49. The conclusion of this research is that the results of assessments from both teachers and students show that mobile learning in simulation and digital communication subjects can be categorized as very practical and effective
Pengembangan Multimedia Pembelajaran Interaktif Mata Pelajaran IPA Untuk Siswa SD Kelas V
Authors: Dwiqi Gede Cris Smaramanik , Sudatha I Gde Wawan , Sukmana Adrianus I Wayan Ilia Yuda
Published: October 2020

Penelitian pengembangan ini dilaksanakan karena kurangnya pemanfaatan media digital oleh pendidik dalam melakukan proses pembelajaran sehingga peserta didik kurang tertarik dalam belajar dan menyebabkan menurunnya hasil belajar peserta didik secara signifikan. Dilaksankannya penelitian pengembangan ini yaitu bertujuan untuk mendeskripsikan rancang bangun pengembangan multimedia pembelajaran interaktif dan validitas multimedia pembelajaran interaktif. Penelitian ini merupakan penelitian pengembangan dengan model penelitian pengembangan ADDIE (analyze, design, development, implementation, evaluation). Data yang dikumpulkan adalah data kuantitatif dan data kulitatif dengan mengunakan 3 metode pengumpulan data yaitu metode observasi, metode wawancara, dan metode kuesioner. Hasil Penelitian menunjukkan 1) Rancang bangun pengembangan multimedia pembelajaran interaktif meliputi tiga tahapan yaitu: (a) analisis kebutuhan, (b) desain, (c) pengembangan dan implementasi, valid dengan: (a) hasil review ahli mata pelajaran dengan kualifikasi sangat baik (97,33%), (b) hasil review ahli desain pembelajaran dengan kualifikasi sangat baik (100%), (c) hasil review ahli media pembelajaran dengan kualifikasi sangat baik (98%), (d) hasil uji coba perorangan dengan kualifikasi sangat baik (96,67%), (e) hasil uji coba kelompok kecil dengan kualifikasi sangat baik (96,85%). 2) Jadi berdasarkan uji validitas pengembangan multimedia pembelajaran interaktif menunjukkan hasil yang efektif didalam meningkatkan hasil belajar IPA sehingga layak untuk digunakan dalam proses pembelajaran.
Pengaruh Model Pembelajaran SAVI Berbantuan Multimedia Terhadap Kompetensi Pengetahuan IPA
Authors: Muliarta Adi , Negara I Gusti Agung Oka , Wiarta I Wayan
Published: October 2020

Pembelajaran yang cenderung menggunakan metode ceramah mengakibatkan siswa cepat merasa bosan dan rendahnya penguasaan kompetensi pengetahuan IPA. Oleh karena itu, penelitian ini dilaksanakan untuk mengetahui Pengaruh Model Pembelajaran SAVI Berbantuan Multimedia Terhadap Kompetensi Pengetahuan IPA Kelas V. Penelitian ini merupakan penelitian Quasi Eksperimen, dengan rancangan nonequivalent control group design. Populasi keseluruhan dalam penelitian ini seluruh kelas V sebanyak 269 siswa. Sampel yang digunakan yaitu 38 siswa kelas kontrol dan 39 siswa untuk kelas eksperimen. Sampel diperoleh dengan teknik cluster random sampling. Data kompetensi Pengetahuan IPA siswa dikumpulkan dengan Instrumen tes objektif. Selanjutnya data tersebut dianalisis menggunakan uji-t. Berdasarkan hasil analisis uji-t diperoleh thitung =3,380 > ttabel 2,000. Sehingga dapat disimpulkan terdapat pengaruh yang signifikan model pembelajaran SAVI terhadap kompetensi pengetahuan IPA kelas V. Hasil penelitian ini diharapkan dapat menjadi salah satu referensi dalam mengembangkan penelitian selanjutnnya.
Portfolio Assessment Based Numbered Head Together Toward Students’ Knowledge Competency of Mathematics
Authors: Purwatiningsih Ni Luh Dian , Wulandari I Gusti Agung Ayu
Published: October 2020

The low competency of students' mathematical knowledge is caused by the lack of optimal models during learning so the students find it difficult to understand learning. It was proven by the results of observations, 53 students or 21.73% of Mathematics PTS scores had reached KKM while as many as 191 people or 78.27% had not yet reached the KKM. This study aimed at analyzing the effect of the NHT model based on portfolio assessment on the competency of the fifth-grade elementary school. This research was a quasi-experimental study with a non-equivalent control group design. The population was all grade V elementary schools consisting of 10 classes of 244 students. The sample was determined using a random sampling technique so selected the fifth grade (Elementary School) SD 1 Mengwi of 34 students as the experimental group and the fifth grade Elementary School Mengwi of 35 students as a control group. In the process of data collection, the test was chosen as a research instrument in the form of an ordinary multiple-choice objective test so the obtained data in the form of mathematical knowledge competency values in the form of quantitative data, then it was analyzed using uji-t analysis with the polled variance formula. The results of data analysis obtained tcount = 4.351> ttable = 2,000 (α = 0.05 and dk = 67) then H0 was rejected and Ha was accepted, which means that there are significant differences between the experimental and control groups. Based on these results, it can be concluded that the NHT model based on portfolio assessment influences the competency of mathematics knowledge in the fifth-grade elementary school.
The Analysis of Guided Inquiry Learning Model Influence towards Primary School Students Science Learning Outcomes
Authors: Saputra I Putu Agus Adi , Wibawa I Made Citra , Suarjana I Made
Published: October 2020

The research that examines the effect of guided inquiry learning models on science learning outcomes has been done a lot, but the results of these studies have not received further study to be summarized and re-tested the effectiveness of the effects of the learning model used. This study aimed to determine the effect of guided inquiry learning models on the science learning outcomes of elementary students. This research was library research with meta-analysis data analysis techniques. The subjects of this study were 7 research articles from various Sinta accredited research journals. Data collection used literature study techniques which were followed by reviewing articles related to the research topic. This study analyzed the effect size of each article. The results of the analysis of the value of each research article obtained the highest value of 1.34, which is included in the large category and there is a research article obtaining a value of 0.78 which has a medium category. Based on the results of the analysis, it was concluded that the guided inquiry learning model has a great influence on improving the learning outcomes of elementary school science students. It also reinforces the results of previous research which states the guided inquiry learning model has a positive effect on improving science learning outcomes of elementary school students.
Improving Poem Writing Skill Through Smart Ludo Media For Grade IV Students
Authors: Kara Raka Bagas , Fathurohman Irfai , Fajrie Nur
Published: October 2020

The low learning outcomes of students' writing skills were the main reason this research was conducted. It happens because the learning model that applied is less effective so it has not been able to optimally hone students writing skills. This study aims to determine the application of smart ludo media to improve poem writing skills in elementary students. This type of research is a classroom action research subject. This research lasted for two cycles, where each cycle consisted of four stages including planning, implementing, observing, and reflecting. Data collection techniques used tests, interviews, observation, and documentation. The results showed that there was an increase in students’ skills in writing poems through smart ludo media. The improvement of writing p[oetry skills in the first cycle obtained a classical completeness value of 73.91% and the second cycle obtained a classical completeness value of 91.30%. based on the results of classroom action research that has been carried out on fourth-grade elementary school students, it can be concluded that there is a positive effect of the application of smart ludo media on improving student learning outcomes in poem writing skills. The results of this study can be used by the teacher as a tool in conveying learning to students and it can be a reference for research using similar research objects.
Media Learning Pansirbongpas on Operating Fractive Materials in Class IV
Authors: Yasa Arnelia Dwi , Suastika Ketut , Wahyu Ningtyas Nur Vita
Published: October 2020

The results of the analysis of the learning process show that the teacher does not use attractive learning media and students do not pay attention to the teacher during the lesson. This result in students often experiencing misconceptions about the material of adding fractions, so there is a need for the development of learning media in the form of unloading shading boards that can support the learning process. The purpose of this study was to determine the validity, practicality, and effectiveness. This research method was a development research by adapting the ADDIE model with 5 stages, namely: Analysis, Design, Development, Implementation, and Evaluation. The test subjects in this study were media expert lecturers, material expert lecturers, teachers and fourth grade students of SDN Ngembul 03, Blitar Regency. The data analysis technique used descriptive qualitative and quantitative. The data collection instrument used in this study was a questionnaire. The loading and unloading shading board based on the results of material validation obtained a score of 79.15% in the feasible category, the results of media validation obtained 75% with the feasible category. The results of the validation of the teacher's practicality got 83.65% in the very good category, the results of the student's practicality got 86.66% with the very good category and the results of the student's effectiveness got 81% with the very good category. The unloading shading board can be used by the teacher in the learning process to make it more interesting and fun. Provide a reference for other researchers in developing interesting and fun learning media for loading and unloading shading boards.
The LOC Learning Model on Student Learning Achievement in Theme 7 of Sub-Themes 1 of The Science Content
Authors: Pidianti Lilis , Taufik Saleh Yopa , Nurfitriani Meiliana
Published: October 2020

This research talks about research that uses the Inside-Outside Circle (IOC), the learning model. This study aimed to determine the effect of the IOC learning model on student achievement on the theme 7 sub-themes 1 of science content in grade IV SDN Kersagalih. The type of research used in this study was quantitative by using Quasi-Experimental Design with the design of nonequivalent control group design. This research was conducted at Kersagalih Elementary School. The population was all students in grade IV Kersagalih Elementary School, totaling 30 students. The sample used was the entire population (total sampling), the sampling was a simple random sampling method. For the data collection techniques used tests that were pretest and posttest and the data were analyzed using the SPSS 25 application. From the results of the analyzed data, it was found that sig 0.003 <0.05, which means that H0 is rejected. The Inside-Outside Circle (IOC) Learning Model has a significant influence on the learning achievement of the fourth-grade students of SDN Kersagalih on the theme 7 sub-themes 1 of science content. Obtaining a t-count is 3.306 and the t-table is 2.04841. For t-count obtained in a positive region or 3.306> 2.04841 so that Ha is accepted. The average value of the experimental class is 82.33 and the control class is 70.33 (82.33> 70.33). So, the Inside-Outside Circle (IOC) learning model has a positive influence on the learning achievement of the fourth-grade students of Kersagalih Elementary School on the theme of 7 sub-themes 1 of science content.
Analisa Erosi Metode USLE pada Lahan Sawit Kabupaten Muara Enim
Authors: Agustina Hilda , Dewi Vita Ayu Kusuma
Published: October 2020

Manusia sangat menentukan tindakan kelestarian lingkungan terutama pada tanah dan air.  Manusia sebagai pengguna pada tanah untuk berbagai macam keperluan, terutama sebagai pemukiman dan usaha. Guna menjaga kelestarian pada tanah maka diperlukan pengelolaan tanah yang juga mengikutsertakan tindakan konservasi di dalam kegiatan pengelolaan dan pemanfaatan tanah.  Sebelum dapat menentukan tindakan konservasi untuk kelestarian tanah, maka diperlukan analisa erosi yang dapat diaplikasikan sebagai media untuk menentukan besarnya erosi pada suatu lahan.  Metode USLE (Universal Soil Loss Equation) adalah metode yang dapat diaplikasikan pada wilayah Indonesia sampai sekarang. Perkembangan intensifikasi lahan perkebunan terutama tanaman sawit sangat mempengaruhi kelestarian lingkungan.  Sehingga diperlukan tindakan penanggulangan dini dengan menganalisa erosi dari lahan perkebunan sawit dengan menggunakan metode USLE.
PENERAPAN REKAYASA MESIN SORTIR SEBAGAI PENENTU KEMATANGAN BUAH JERUK DAN TOMAT MERAH BERBASIS IMAGE PROCESSING
Authors: Siskandar Ridwan , Indrawan Noer A , Kusumah Billi Rifa , Santosa Sesar Husen , Irmansyah Irmansyah , Irzaman Irzaman
Published: October 2020

The embedded systems in the industrial, especially image processing, is increasingly leading to the study of production automation systems such as fruit sorting. Post-harvest sorting system implemented by the industry is manual, so it’s not effective. The solution was to conduct research aimed at modifying post-harvest sorting tools by engineering tomato and orange sorting machines based on their color. The method uses image processing. It’s the most efficient alternative in terms of cost and complexity of hardware design, does not require many sensors, but produces an accurate output. The camera is placed on the mechanical sorting machine system, taking images to determine the sorting execution after the fruit color type are recognized. The results of the research were carried out through several tests, namely: light intensity, color image data, and organoleptics. Light intensity test showed that the position of the tool had a value of 0.78% of the outside light disturbance. Color image shows the range of ripeness values (R/G) for raw tomatoes 0<=1.04; half ripe tomatoes 1.04<=1.39; ripe tomatoes 1.39<=3.59; raw orange 0<=0.92; undercooked oranges 0.92<=0.98; and ripe oranges 0.98<=1.66. Organoleptic test from five observers had the same results as the reading on the fruit sorting tool. Keywords : engineering, fruit maturity, oranges, sorting machines, tomatoes
TREN PERUBAHAN CROP WATER PRODUCTIVITY KAKAO (Theobroma cacao L. ) DI D.I. YOGYAKARTA
Authors: Suhartanto Eka , Safitri Lisma
Published: October 2020

The studies on the Crop Water Productivity (CWP) of cocoa to increase productivity in the midst of water scarcity and climate change are currently underdeveloped. Thus, this study aims to find out the trends in climate, productivity, crop water use and CWP of cocoa plantations. The methods included collecting climate and productivity data during 2014-2019, simulating crop water use with Cropwat 8.0 software and analysing the changing trends of CWP in cocoa plantations, DI Yogyakarta. The results indicated the changes in productivity of cocoa plantation ranged from 0,41 – 0,53 tons / ha. The Crop Water Usage (CWU)  decreased from 11.107 m3 in 2014 to 8.482 m3 in 2019 under rainfed schenario. Subsequently, the trend of CWP tended to increase from 0,037 kgm-3 in 2014 to 0,059 kgm-3 in 2019. CWP of cocoa plantation increased when CWU decreased and productivity increased. CWP value illustrated that every 1 m3 of water used have produced 0,037 – 0,059 kg of dried cocoa beans. In terms of water use efficiency, this relatively small CWP value indicates that the level of water use by cocoa plants in DI Yogyakarta is inefficient that requires improvement in the future such as increasing land productivity and precision irrigation schemes for cocoa plantations.  Keywords: Cacao (Theobroma cacao L.), crop water productivity, crop water use, D.I Yogyakarta
Analisis Miskonsepsi Siswa SD Kelas V Pada Konsep Sifat-sifat Cahaya
Authors: Nurfiyani Yenni , Putra M. Jaya Adi , Hermita Neni
Published: October 2020

Tujuan penelitian ini untuk mengetahui dan mendeskripsikan miskonsepsi siswa sekolah dasar (SD). Seharusnya siswa tidak boleh memiliki konsep yang keliru karena dapat  mempengaruhi pemahamannya pada materi berikutnya. Metode pengumpulan data menggunakan tes berupa four tier test dan wawancara. Teknik pengambilan sampel melalui sampling jenuh yaitu  seluruh kelas V SD Negeri 37 Pekanbaru. Data hasil penelitian dianalisis menggunakan analisis kuantitatif deskriptif. Hasil penelitian menunjukkan bahwa miskonsepsi siswa SD dapat dikategorikan “sedang” dengan rata-rata 53,57 % atau berjumlah 60 siswa dari 112 siswa. Miskonsepsi tertinggi pada sub indikator materi terkait sumber cahaya dengan miskonsepsi sebesar 68,75 % atau berjumlah 77 siswa dari 112 siswa. Miskonsepsi terendah yaitu sebesar 35,71 % atau sebanyak 40 siswa yaitu pada sub indikator cahaya dapat dibiaskan. Berdasarkan faktor gender, miskonsepsi siswa laki-laki dan perempuan dikategorikan sedang yaitu sebesar 53,57%  dan 55,36%. Hal ini menunjukkan  bahwa masih banyak siswa SD yang mengalami miskonsepsi pada materi sifat-sifat cahaya.
Efektivitas Lesson Design Berbasis Hypothetical Learning Trajectory dalam Pembelajaran Faktor yang Mempengaruhi Laju Reaksi
Authors: Sari Wiwik Kartika , Nada Ella Izzatin
Published: October 2020

Perencanaan pembelajaran merupakan aspek penting untuk menciptakan pembelajaran yang berkualitas. Kualitas pembelajaran dapat ditinaju dari dialog dan aktivitas yang terjadi di kelas. Dialog yang efektif akan terjadi ketika interaksi antara guru dan siswa dapat secara kritis menginterogasi topik pelajaran, mengekspresikan dan mendengarkan banyak sudut pandang, serta menciptakan proses pembelajaran yang berpusat pada siswa. Dialog yang efektif adalah dialog yang responnnya terantisipasi sehingga tujuan pembelajaran tercapai. Prediksi dan antisipasi respon dapat disusun dalam suatu lintasan pembelajaran yang biasa disebut hypothetical learning trajectory. Tujuan dari penelitian ini adalah untuk menganalisis prediksi respon siswa dan antisipasi respon dalam lesson design dengan respon siswa saat proses pembelajaran serta untuk mengetahui kecenderungan aktivitas pembelajaran. Metode dalam penelitian ini adalah deskriptif kualitatif dengan sampel sebanyak 32 siswa kelas XI. Materi pada penelitian ini adalah faktor yang mempengaruhi laju reaksi. Proses pembelajaran direkam dan ditranskrip, dialog selama proses pembelajaran dianalisis kesesuaiannya dengan prediksi respon siswa dan antisipasi respon yang ada dalam lesson design. Hasil analisis menunjukan bahwa 16%  prediksi respon siswa tidak muncul, 21% respon siswa diluar prediksi dan 63% respon sesuai dengan prediksi respon yang telah disiapkan serta kecenderungan aktivitas selama proses pembelajaran menunjukan pembelajaran berpusat pada siswa. Melalui penelitian ini, dapat diketahui bahwa tugas – tugas yang dikembangkan guru, pertanyaan dan umpan balik yang diberikan atas respon siswa mempengaruhi kedalaman dan keluasan pemikiran siswa.
Diversity and Distribution of Curry Leaf in India
Authors: B R Raghu
Published: October 2020

Curry leaf is an aromatic tropical and sub-tropical plant originated from India. Besides its culinary purpose, curry leaf is known for its medicinal and industrial applications. Based on ethno-botanical reports and other floral distribution studies, the germplasm rich regions of curry leaf in India could be identified into six zones as Foot hills of Himalaya, North-East region, Middle India, Eastern Ghats, Western Ghats and Andaman – Nicobar Islands. With respect to color and size of leaves, habitat and flavor, the curry leaf plant is classified as brown/ gamthi, regular and dwarf morphotypes. Four genetically diverse chemotypes of curry leaves such as -pinene, -pinene, -carophyllene and -phellandrene exist in India. Due to its nutritional value, increasing export potential, less input, lower cost of cultivation, assured income, perennial nature and constant demand in local, national and international markets, the curry leaf is being cultivated on commercial scale in recent years in India.
Standardization of Spacing and Soil Volume Wetting for Drip Irrigationin Papaya (Carica papaya L.)
Authors: B L Manjunath , A K Nair , R H Laxman
Published: October 2020

Field experiments in two crops of papaya were conducted at ICAR-Indian Institute of Horticultural Research for four years during 2016-19 to standardise spacing with optimum soil volume wetting for drip irrigation. Narrowing the plant rows drastically reduced the plant height while leaf production affected significantly due to reduction in intra row spacing. The height at first fruiting was significantly lower with a spacing of 1.8 m x 1.5 m (56.4 cm) significantly differing from both 1.5 m x 1.5 m (60.9 cm) or 1.8 m x 1.8 m (66.8 cm). Significantly higher mean fruit yield (42.2 t/ha) was recorded with the spacing of 1.5 m x 1.5m as compared to either 1.8m x 1.5m (23.4 t/ha) or 1.8m x 1.8m (22.1 t/ha). Significantly higher water use efficiency (71.3 kg/ha.mm) was recorded in papaya by following closer spacing of 1.5 m x 1.5 m. Among the interactions, higher papaya yield (48.0 t/ha) was recorded with normal drip irrigation (80% soil volume wetting) under closer spacing (1.5 m. x 1.5 m). Further, higher water use efficiency (129 kg/ha. mm) could be obtained by scheduling the irrigation at 30% soil volume wetting especially by planting at 1.5 m. x 1.5 m. spacing suggesting its suitability for water scarcity areas.