bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH GOOD CORPORATE GOVERNANCE DAN DEBT MATURITY TERHADAP PREDIKSI BOND RATING
Authors: Marfuah Marfuah 
Published: March 2017

The objective of this study is examine the effect of good corporate governance and debt maturity towards bond rating prediction. Good corporate governance is proxied by institutional ownership, managerial ownership, board size, independent directors, audit committee, and audit quality. The sample in this study consist of 229 bonds issued by financial companies listed on the Indonesia Stock Exchange from 2011 to 2013 and was ranked by PT PEFINDO. This study uses ordinal regression analysis model to test the effect of good corporate governance and debt maturity towards bond rating prediction. The results of this study showed that institutional ownership and audit committee have significant positive effect towards bond rating prediction while independent commissioner have significant negative effect towards bond rating prediction. Managerial ownership, board size, audit quality and maturity haven’t significantly affect toward bond ratings. The findings of this study indicated that companies with the bigger institutional ownership and the bigger audit committees, then predicted the company has bonds with higher ratings. The findings that the independent commissioner has significant negative effect toward bond rating prediction indicate that the presence of independent commissioner haven’t been able to role effectively so expected the quality of independent commissioner should be improved.
Ekperimentasi Model Pembelajaran Discovery dan Group Investigation Terhadap Prestasi Belajar Matematika Ditinjau dari Kreativitas Siswa
Authors: Vahlia Ira 
Published: March 2017

The aim of the research was to determine the effect of learning models on mathematics achievement viewed from the student creativity. The learning model compared were discovery, group investigation and conventional. The type of the research was a quasi-experimental research. The population was the students of Junior High Schoolin Surakarta city on academic year 2012/2013. The samples of this research were taken by using the stratified cluster random sampling technique. The samples consist of 281 students who were divided into 94 students in the first experiment class, 94 students in the second experiment class, and 93 students in the control class. The results of this research are as follows: (1) the discovery learning model results in better learning achievement than the group investigation and conventional learning model. The group investigation learning model results in an equal learning achievement to the conventional learning model, (2) the students having high level of creativity have better learning achievement than those having medium and low levels of creativity. The students having medium level of creativity have an equal learning achievement to those having low level of creativity, (3) on the discovery learning model, students having high creativity have better learning achievement than those having medium and low levels of creativity and students having medium level of creativity have an equal learning achievement to those having low creativity. On the group investigation model, students in each level of creativity have the same learning achievement, (4) the students who were tought with the discovery learning model have better learning achievement than those taught with the group investigation and conventional learning model in the category of having high level of creativity. The students who were tought group investigation and conventional model results in an equal learning achievement in the category of having high level of creativity. The students having medium level of creativity have an equal learning achievement to those having low level of creativity in each learning model.
Efektivitas Penerapan Metode Diskusi dengan Pendekatan Matematika Realistik (PMR) Ditinjau dari Tipe Kepribadian Siswa Kelas VIII SMP Negeri di Kabupaten Lampung Timur
Authors: Septianawati Desty 
Published: March 2017

The aims of this research are to know: (1) Which one more effective, learning using discussion with realistic mathematics approach or a conventional learning. (2) Which one gives better mathematics learning achievement, student with personality types Sanguine or Phlegmatis. (3) Which one more effective for each personality typeof students, learning using discussion withPMR or a conventional learning.This research used quasi experimental method with its population included all of students of state junior high school in East Lampung Regency. Sampling was done by stratified cluster random sampling. The size of the samples was 202 students. The data collection technique were the document that was the last of examination theseven grade for initial capability data before the experiment, achievement tests for mathematics student achievement data, and questioner of personality types. The data was analyzed using analysis of variance. The conclusions of the research were as follows: (1) learning mathematics using discussion with PMR is more effective than learning mathematics usingdiscussion with conventional approach. (2) Students with personalitytypesof Sanguinenor Phlegmatis have the same mathematics achievement. (3) For each personality type of students, learning using discussion with PMR approach is more effective than learning mathematics the method of discussion withconventional approach.
Upaya Peningkatan Kemampuan Komunikasi Matematis Siswa dengan Model Pembelajaran Kooperatif di SMP N 2 Sedayu Yogyakarta
Authors: Istikomah Dhian Arista 
Published: March 2017

Penelitian ini bertujuan untuk meningkatkan kemampuan komunikasi matematika siswa pada mata pelajaran matematika materi pokok kubus dan balok dalam pokok bahasan luas permukaan dan volume melalui model pembelajaran kooperatif. Penelitian ini adalah penelitian tindakan kelas dengan subjek penelitian adalah siswa kelas VIIIE SMP N 2 Sedayu semester genap tahun ajaran 2012/2013. Penelitian ini terdiri dari dua siklus, siklus pertama dilaksanakan dalam 3 pertemuan dan siklus kedua dilaksanakan dalam 3 pertemuan. Teknik pengumpulan data menggunakan observasi, tes kemampuan komunikasi matematika siswa, wawancara dan catatan lapangan. Analisis data yang digunakan yaitu, analisis observasi siswa dan analisis tes kemampuan komunikasi matematika dengan analisis persentase. Hasil penelitian menyimpulkan bahwa (1) pembelajaran dengan model pembelajaran kooperatif dapat meningkatkan kemampuan komunikasi matematika siswa dengan persentase hasil observasi kegiatan siswa sebesar 68,6% pada siklus I menjadi 86,9% pada siklus II. (2) pembelajaran dengan model pembelajaran kooperatif dapat meningkatkan kemampuan komunikasi matematika siswa dari nilai rata-rata kelas awal sebelum tindakan sebesar 41,63 dengan ketuntasan prasiklus sebesar 9% (kualifikasi kurang) menjadi nilai rata-rata kelas sebesar 79,81 dengan ketuntasan kelas sebesar 81,8% (kualifikasi tinggi) pada siklus I, nilai rata-rata kelas sebesar 84,9 dengan ketuntasan kelas sebesar 90,9% (kualifikasi tinggi) pada siklus II.
PENINGKATAN AKTIVITAS DAN HASIL BELAJAR SISWA MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE JIGSAW PADA MATA PELAJARAN MATEMATIKA SISWA KELAS VII SMPN 2 BUMIRATU NUBAN TAHUN PELAJARAN 2014/2015
Authors: Basuki Nur 
Published: March 2017

Based on preliminary observations obtained activity data and student learning outcomes are still low, especially subjects of mathematics, as many as 6 students or 28.23% of the students completed and 15 students or 71.78% of students have not been completed. Based on the above facts applied learning model of Jigsaw Cooperative type that aims to improve the activity and student learning outcomes in mathematics in comparison material and scale. The study involved 21 students of class VII SMPN 2 BUMIRATU Nuban in semester 1 Academic Year 2014 / 2015.This research used a Class Action Research (PTK) by using two cycles. Each cycle consists of four stages: planning, implementation, observation and reflection. Data collected by the observation sheet and test student learning outcomes in each cycle. From the analysis of the data shows that the use of cooperative learning model Jigsaw Type in the learning process of Mathematics students can increase the activity and student learning outcomes. It can be seen from the average percentage of the activity of students in the first cycle was 55.5 and increased in the second cycle to 70.5. While the average value of student learning outcomes in the first cycle was 58.75 and increased in the second cycle into 72.50
PENERAPAN MODEL COOPERATIVE LEARNING TIPE THINK PAIR SHARE UNTUK MENINGKATAN AKTIVITAS DAN HASIL BELAJAR MATEMATIKA SISWA KELAS VI SD NEGERI KALIWADAS 01
Authors: Paryanti Paryanti 
Published: March 2017

The aims of this research were to increase the activities and the result of study by implementation of cooperative learning model type think pair share. The method of the research was Classroom Action Reserach. The instrument of data collection used observation sheet and test. Technique of data analysis used qualitative and quantitative analysis. The result showed that the student activity in cycle I 62,54% (active) and cycle II 78,27%(active). The result study of the cognitivie in cycle I 71,70% (good) and cycle II 78,61% (good). Keywords : activity, result study, think pair share
PENGEMBANGAN MODEL PEMBELAJARAN KOOPERATIF MENGGUNAKAN PENDEKATAN REALISTIK PADA MATA KULIAH STATISTIKA MATEMATIKA I
Authors: Andayani Sutrisni , Jazim Jazim 
Published: March 2017

The purpose of this research is developing the cooperative model by using the realistic approach in Mathematic Statistics I. As the form of development and research, collecting data done through observation method, questionnaire, interviewing, and a test. The step of this research are introduction study, plan, develop and evaluation. Based on the introduction study, was developed of cooperative instructional and realistic approach instructional. Syntax in cooperative instructional model done by realistic approach is running well and there are increasing of activity, response and student’s learning achievement, and difference of probability explanation using realistic approach. Syntax instructional of the model are 1) material explanation 2) group discussion by using context, model, alternative in problem-solving and finally concluding of all, 3) the group member is given the quiz individually, and 4) the score and reward are given to the group. Keywords: cooperative instructional model, mathematic statistics I, realistic approach
UPAYA MENINGKATKAN HASIL BELAJAR MATEMATIKA DENGAN PEMBELAJARAN THINK TALK WRITE BERBANTUAN MEDIA GAMBAR PADA SISWA KELAS VI SD NEGERI 1 PURWOSARI
Authors: Samsi Samsi 
Published: March 2017

The aims of this research were to increase the mathematics result of study by implementation of Think Talk Write (TTW) learning with picture media. The method of the research was Classroom Action Reserach. The instrument of data collection used test. Technique of data analysis used qualitative and quantitative analysis. The research result showed mean the result of study in cycle I is 56,30 and cycle II is 76,10. Then Think Talk Write (TTW) learning with picture media can increase the mathematics result study.Keyword : mathematics result study, picture media, think talk write
PERBANDINGAN HASIL BELAJAR DISCOVERY LEARNING BERBASIS PROBLEM SOLVING DAN GROUP INVESTIGATION BERBASIS PROBLEM SOLVING PADA PEMBELAJARAN METODE NUMERIK
Authors: Vahlia Ira , Agustina Rina 
Published: March 2017

Discovery learning is a learning that involves students in the process of mental activity through a brainstorm, to discuss, and try it yourself, so that children can learn to be independent. Resulting in the discovery-based learning problem solving is to let children discover things on their own and group investigation that emphasizes problem solving based on a debriefing activities and student participation. The classes drawn into the sample, the class as a class given control based discovery learning and problem solving one class another group investigation given learning-based problem solving. Data analysis techniques in this study using Ttes. From the results of this study concluded that: (a) In the first experiment class that implements learning model-based problem solving group investigation obtained average value of learning outcomes at 73.10 while the experimental class II implementing discovery-based learning problem solving obtained average value postest average of 66.55. (b) There are significant differences between the results of student learning in the class that implements the discovery-based learning and problem solving class that implements the learning model based problem solving group investigation. Student results in learning problem solving based group investigation better on the class that implements the model-based discovery learning problem solving. Keywords: discovery learning, group investigation, learning numerical methods, problem solving
MENGETAHUI PENGARUH KOEFISIEN VISKOSITAS AKUADES TERHADAP VARIASI DIAMETER TABUNG MENGGUNAKAN ADOBE AUDITION 1.5
Authors: Salim M Barkah 
Published: March 2017

An experiment had been carried out to determine the viscosity coefficient of aquadest (destilled water) by using Stokes falling ball method. The detection of the balltime during the experiment is done using magnetic induction censor while the reading of induction time data uses adobe audition 1.5 software. By doing this technique the measurement of magnetic ball travel time can minimize the weakness of the ball falling travel measurement which is usually done manually. In this experiment the determination of the coefficient of viscosity by varying the diameter of the tube. The purpose of this experiment was to determine the effect of tube diameter on the viscosity coefficient Based on the results of the experiment, the bigger the tube diameter is, the smaller the viscosity coefficient will be. If the tube diameter is bigger again, the viscosity coefficient will be flatter. So, viscosity coefficient is always constant for each of the increase of tube diameter.
PENERAPAN MODEL CHALLENGE BASED LEARNING DENGAN METODE EKSPERIMEN DAN PROYEK DITINJAU DARI KEINGINTAHUAN DAN SIKAP ILMIAH TERHADAP PRESTASI BELAJAR SISWA
Authors: . Sodikin 
Published: March 2017

The purposes of the research were to know the effect of challenge based learning (CBL) model by experiments method and project, learning of inquiring and scientific attitude and their interaction towards students’ achievement in cognitive, affective and psychomotoric. Data was collected using test technique for cognitive, non test technique for affective, psikomotoric, learning motivation, learning activity, and obsevation sheet is used for affective and psychomotoric. The data were analyzed by using anova test through software PASW 18. Based on the analysis of the data concluded: 1) there was effect of CBL model by experiments method and project toward cognitive, affective and psychomotoric towards students’ achievement; 2) there was an effect of learning inquiring towards cognitive and affective students’ achievement, but there was no effect towards psychomotoric students’ achievement; 3) there was an effect of scientific attitude toward cognitive students’ achievement, but there was no effect toward affective and psychomotoric students’ achievement; 4) there was no an interaction between CBL model by experiments method and project method with learning inquiring toward cognitive, affective and psikomotoric student’ achievement; 5) there was no an interaction between CBL model by experiments method and project method with scientific attitude toward cognitive, affective and psychomotoric students’ achievement; 6) there was no an interaction between learning inquiring with scientific attitude toward cognitive, affective and psychomotoric students’ achievement; 7) there was no an interaction between CBL model by experiments method and project with learning inquiring and scientific attitude toward cognitive, affective and psychomotoric students’ achievement.
ANALISIS RESISTANSI COIL KAWAT TEMBAGA TERHADAP PERUBAHAN SUHU SANGAT RENDAH SEBAGAI RANCANG DASAR PENGUKURAN SUHU RENDAH
Authors: Riswanto Riswanto 
Published: March 2017

The resistance of a wire conductor depend of the wire material. Copper wire formed into a coil shape an effective form to produce a large resistance. Copper wire resistance influenced bytemperature about it. Coil of copper wire has a good response at low temperature changes produced by liquid nitrogen. This response is shown by the index value determination (R2 = 0.999) which is close to the value 1,that means changes in temperature approaching a linear response to changes in a voltage. The results can be used as a basis for the design of the low-temperature measurements cheaper
PENINGKATAN HASIL BELAJAR IPA MELALUI MODEL PEMBELAJARAN KOOPERATIF TIPE THINK-TALK-WRITE PADA SISWA KELAS VIII.5 TAHUN PELAJARAN 2014/2015
Authors: Sudarmiyati Wiwik 
Published: March 2017

Penelitian ini bertujuan untuk meningkatkan hasil belajar fisika serta aktivitas siswa kelas VIII SMP Negeri 3 Batanghari. Bentuk penelitian ini adalah penelitian tindakan kelas. Sampel penelitan siswa kelas VIII.5 dengan jumlah 30 siswa. Penelitian dilakukan dua siklus. Setiap siklus terdiri dari empat tahap yaitu perencanaan, pelaksanaan, pengamatan, dan refleksi yang dilakukan dua kali pertemuan. Dari hasil penelitian, rata-rata menunjukan bahwa model pembelajaran Think-Talk-write dapat meningkatkan persentase aktivitas siswa dari siklus I sebesar 55% dan siklus II sebesar 69,41% sehingga berada pada rentang skor tinggi. Pembelajaran dengan strategi Think-Talk-write juga dapat meningkatkan hasil belajar dengan ketuntasan belajar pada siklus I sebesar 53,33% dan siklus II sebesar 90%. Dapat disimpulkan bahwa dengan menggunakan model pembelajaran Think-Talk-Write dapat meningkatkan hasil belajar siswa pada materi tekanan.
Computational Prediction of the Protonation Sites of Ac-Lys-(Ala)n-Lys-NH2 Peptides through Conceptual DFT Descriptors
Authors: Sastre Sebastián , Frau Juan , Glossman-Mitnik Daniel 
Published: March 2017

Six density functionals (M11, M11L, MN12L, MN12SX, N12, and N12SX) in connection with the Def2TZVP basis set and the SMD solvation model (water as a solvent) have been assessed for the calculation of the molecular structure and properties of several peptides with the general formulaAc-Lys-(Ala)n-Lys-NH2,withn=0to5 [...]
Topical Treatment of Herpes Simplex virus Infection with Enzymatically Created siRNA Swarm
Authors: Paavilainen Henrik , Lehtinen Jenni , Romanovskaya Alesia , Nygårdas Michaela , Bamford Dennis H , Poranen Minna M , Hukkanen Veijo 
Published: March 2017

Background Herpes simplex virus (HSV) is a common human pathogen. Despite current antivirals, it causes a significant medical burden. Drug resistant strains exist and they are especially prevalent in immunocompromised patients and in HSV eye infections. New treatment modalities are needed. Methods BALB/c mice were corneally infected with HSV and subsequently treated with a swarm of enzymatically created, Dicer-substrate small interfering RNA (siRNA) molecules that targeted the HSV gene UL29. Two infection models were used, one in which the infection was predominantly peripheral and another in which it spread to the central nervous system. Mouse survival, as well as viral spread, load, latency and peripheral shedding, was studied. Results The anti-HSV-UL29 siRNA swarm alleviated HSV infection symptoms, inhibited viral shedding and replication and had a favourable effect on mouse survival. Conclusions Treatment with anti-HSV-UL29 siRNA swarm reduced symptoms and viral spread in HSV infection of mice and also inhibited local viral replication in mouse corneas.
ESTUDO PRELIMINAR DO PROCESSO DE INTRODUÇÃO DE NOVAS ATIVIDADES PRODUTIVAS: O CASO DA PIMENTA-DO-REINO NO ASSENTAMENTO LUIZ INÁCIO EM PARAGOMINAS – PA
Authors: Santos Cleber Assis dos , Alves Livia De Freitas Navegantes , Farias Monique Helen Cravo Soares , Pinheiro José Bruno Santos 
Published: March 2017

Em Paragominas, município do Nordeste do Pará, o processo de introdução de novas atividades produtivas é comum em lotes de agricultores familiares. Nesse sentido, se destaca o cultivo da pimenta-do-reino. Este estudo tem como objetivo entender como se processa a introdução de uma nova atividade produtiva e os motivos dos agricultores em introduzirem determinadas mudanças nos sistemas de produção. A pesquisa de campo foi realizada com agricultores do assentamento Luiz Inácio, onde foram aplicados 71 questionários para caracterização geral dos sistemas de produção. Através da aplicação dos questionários foram identificados agricultores que tinham introduzido novas atividades, destacando-se a pimenta-do-reino. A sistematização dos dados revelou que 44% do total de agricultores entrevistados iniciaram uma nova atividade produtiva, dentre eles 29% cultivam a pimenta-do-reino. Os resultados mostram que o cultivo da pimenta-do-reino está crescendo no assentamento, principalmente pela estabilidade e alto preço de comercialização, contribuindo para o desenvolvimento econômico dos agricultores e possibilitando-lhes segurança financeira. É extremamente importante entender as possibilidades de mudança nos sistemas de produção para poder subsidiar um apoio mais realista aos agricultores no planejamento e implementação de novas atividades.
ANÁLISE DA EXPLORAÇÃO MINERÁRIA E SEUS IMPACTOS, VISANDO A RECUPERAÇÃO DE ÁREAS DEGRADADAS: ESTUDO DE CASO NO MUNICÍPIO DE PEDRA LAVRADA-PB
Authors: Silva de Assis Dantas Heline Fernanda , Silva José Adailton Lima , Medeiros Monalisa Cristina Silva , Cabral Laíse Nascimento 
Published: March 2017

O presente artigo trata-se de uma pesquisa exploratória, baseada no estudo de casoreferente à exploração mineral de uma mina de quartzo, no município de Pedra Lavrada, noestado da Paraíba, visando analisar seus impactos e a recuperação de áreas degradadas. Destaforma, enfatizou-se práticas para minimizar os impactos ambientais ou para a recuperação dasáreas degradadas pela mineração local. Para tanto, utilizou-se como metodologia: pesquisasbibliográficas, estudos in loco, e registro icnográfico para evidenciar a inter-relação entre asatividades minerárias e os impactos ambientais. Depois de realizados os estudos, pôde-seconcluir que a atividade mineral local se dá de forma rudimentar e predatória, tendo comoresultado o advento de impactos ambientais (poluição do ar, redução da biodiversidade, edegradação da qualidade ambiental), os quais podem ser mitigados a partir detécnicas/práticas de recuperação de áreas degradadas-RAD. Palavras-Chave: Mineração. Degradação ambiental. Recuperação de áreas degradadas.