bluuebunny/crossref_metadata_2025 huggingface dataset:
Medidas de composição corporal com adipómetro e bioimpedância – comparação entre resultados
Authors: De Almeida Rodrigo Alves , Tiengo Andrea , Brasil e Bernardes Ana Carolina
Published: April 2020

Introdução: A avaliação nutricional tem por objetivo verificar e acompanhar o crescimento e desenvolvimento corporal, seja individual ou de determinado grupo, estabelecendo uma intervenção quando necessário, sendo um bom indicador da qualidade de vida. Para realizar a avaliação nutricional, é necessário que o profissional utilize vários parâmetros para obtenção de um resultado mais preciso e fidedigno. Objetivo: Comparar os diversos resultados das avaliações corporais obtidos através das avaliações com adipômetro, bioimpedância tetrapolar, bioimpedância perna-perna e monitor de gordura corporal. Métodos: A amostra foi composta por 78 acadêmicos da Universidade do Vale do Sapucaí­ – Univas, no municí­pio de Pouso Alegre/MG, sendo 37 do gênero masculino e 41 do gênero feminino. Os métodos comparados no estudo foram: Bioimpedância tetrapolar, avaliação de dobras cutâneas aferidas com adipômetro Langer®, monitor de gordura corporal Omron HBF-306INT® e balança digital da marca Oxer, Body – 923®. Resultados: Todos os métodos de avaliação corporal analisados mostraram-se com uma correlação alta quando comparados com o padrão ouro avaliado bioimpedância tetrapolar, (p â‰¤ 0,05). Conclusão: Métodos como avaliação de dobras cutâneas aferidas com adipômetro, monitor de gordura corporal Omron, e balança digital da marca Oxer, Body – 923® mostraram-se eficientes para avaliação da composição corporal, sendo estes, métodos rápidos, baratos e não invasivos para serem utilizados nas avaliações corporais.Palavras-chave: avaliação nutricional, composição corporal, peso corporal, tecido adiposo.
Aspectos higiênico-sanitários da cozinha de uma instituição de longa permanência para idosos
Authors: Ferreira Aline Cardoso , Paes Sany do Nascimento Dias , Do Nascimento Kamila de Oliveira
Published: April 2020

Embora todas as pessoas estejam suscetí­veis a Doenças Transmitidas por Alimentos, sabe-se que os idosos fazem parte do grupo de risco a infecções de qualquer natureza, principalmente microbiológica, em função de alterações no sistema imunológico. Entende-se ainda que o fornecimento de uma alimentação saudável e higienicamente segura possui propriedades que colaboram para a manutenção da saúde dos indiví­duos, especialmente dos idosos. Fez-se necessário avaliar os aspectos higiênico-sanitários da cozinha de uma Instituição de Longa Permanência para Idosos de Barra Mansa/RJ, a fim de colaborar para sua adequação. Foi elaborada uma lista de verificação (check list) para analisar os aspectos higiênicos sanitários da instituição embasada no cumprimento das boas práticas a partir das resoluções da Anvisa nº 216/04 e nº 275/02. Verifica-se que dos 241 subitens aplicáveis, apenas 8 foram satisfatórios e 233 foram caracterizados como insatisfatórios, ou seja, 59 % de irregularidades foram encontradas. Conclui-se através dos resultados encontrados, um perfil insatisfatório dos aspectos higiênico-sanitários na cozinha da instituição, sendo que é necessária uma intervenção nas condições higiênicos sanitárias da ILPI, a fim de evitar contaminações alimentares e garantir melhores condições de atendimento aos idosos residentes nesta instituição.Palavras-chave: higiene, idosos, segurança de alimentos.
Perfil nutricional e estado de saúde de idosos fisicamente ativos
Authors: Silva Antonia Ilka da Cruz , Landim Liejy Agnes dos Santos Raposo
Published: April 2020

A população brasileira está sofrendo modificações, com o crescimento do grupo dos idosos longevos, que vivem 80 anos ou mais. O objetivo desse estudo foi analisar o perfil nutricional e estado de saúde de idosos fisicamente ativos. Trata-se de um estudo observacional e transversal. Foi aplicado um questionário sociodemografico e avaliados os parâmetros: í­ndice de massa corporal, peso e altura, perí­metros (braço, muscular do braço, cintura), razão cintura-quadril, e recordátorio de 24 horas. Os dados foram analisados por estatí­stica descritiva e analisados no software IBM SPSS 22 for Windows. O sexo feminino era predominante (88,8%), com idade média de 65 anos, e 40,74% dos indiví­duos tiveram 5 ou mais filhos. O IMC médio foi de 28,9 kg/m2, e 48,1%da amostra com excesso de peso. Na correlação da idade e razão cintura-quadril, teve correlações significativas para doenças crônicas não transmissí­veis. Os participantes apresentavam adequação de macronutrientes e baixa ingestão de cálcio, 51,47% apresentavam hipertensão arterial e 36,84% diabetes. Concluiu-se que os participantes apresentavam excesso de peso e baixa ingestão de cálcio, tendo a necessidade de orientação alimentar para a melhoria da qualidade de vida dessa população.Palavras-chave: idoso fisicamente ativo, estado nutricional.
A Security Framework for Mobile Application Systems: Case of Android Applications.
Authors: Bwalya Michael , Chembe Christopher
Published: April 2020

Smartphones have become a major part of humanâ€™s life. And also it has been seen that new mobile applications are built day by day. Currently mobile applications are playing major role in many areas such as banking, social networking, financial apps, entertainment and many more. With this increasing number of applications, security is an important issue. The growth of android market has increased security risk and thus focus should be given to the security. Security is the biggest issue in the field of mobile technology. Therefore, mobile applications need to be assessed and ensure that secure coding practices have been followed during development. Mobile application security breach can lead to fraudulent transactions through mobile applications, confidentiality and revenue loss through communications services misuse. Data that is shared on an unsecured channel is vulnerable to attacks and to stop unauthorized access to this data, there is need to encrypt the data before it is sent to the server. In this research work, different cryptographic algorithms for encrypting data and secure data sharing in mobile applications across communications channels were examined. Simulation methodology was used to investigate a suitable cryptographic algorithm and to design a security framework for mobile applications to solve mobile application security problems. The proposed framework employs the use of Advanced Encryption Standard (AES) algorithm for encrypting meter readings data being exchanged between a smart phone and the server. The results obtained from the simulation of the security framework, showed that the four fields namely: Account number, image path, meter number and phone number on which AES encryption was applied were in an unreadable format (ciphertext), implying that the fields have been successfully encrypted. This solution allows application users to transfer (upload readings) data between a smart phone and database server in a secure manner without facing the problem of data attack. Data being uploaded to the server is encrypted before it is transferred and decrypted once it reaches the server side. This solution addresses android application security in the application and network communications layers and data transmission. The research paper ensures information security is guaranteed between an organisation and its customers.
Iniciativa emprendedora del recurso humano inactivo en el Establecimiento Penitenciario de Mediana Seguridad y Carcelario de Bucaramanga
Authors: Garavito-Hernández Youseline , Córdoba-Campos Jesús Alberto , Ardila-Sequeda Reinaldo
Published: April 2020

El código penitenciario colombiano se encuentra regulado por la Ley 65 de 1993, que establece que las funciones y finalidades de la pena en Colombia son la protectora y la preventiva, pero su fin fundamental es la resocialización. Actualmente, se presenta en el país una crisis penitenciaria y carcelaria en el proceso de resocialización a la vida laboral del recluso, por su condición de expresidiario. En esta investigación se hace un análisis de las características personales y del entorno del recurso humano inactivo y su influencia en la iniciativa emprendedora en el Establecimiento Penitenciario de Bucaramanga, con el fin de proponer estrategias que favorezcan la resocialización de esta población vulnerable. El estudio tiene un enfoque cuantitativo no experimental, de corte transversal y de alcance relacional. Se comprobó que las características personales y del entorno global influyen positivamente en la iniciativa emprendedora del privado de la libertad, por lo que se propone la creación de una unidad de emprendimiento en el Establecimiento Penitenciario.
Relación entre clima organizacional y riesgo psicosocial intralaboral de una empresa de transporte en Bucaramanga
Authors: Garcia-Mendez Sebastián , Galvis-Rojas Yurley Paola , Ortiz-Olago Jhonatan Andrés
Published: April 2020

Este documento muestra la relación entre clima organizacional y el nivel de riesgo psicosocial intralaboral en empleados operativos de la empresa de transporte Cotaxi S. A. S., de Bucaramanga. Para el desarrollo de esta investigación se determina el clima organizacional en las dimensiones objetivos, cooperación, liderazgo, toma de decisiones, relaciones interpersonales, motivación y control, mediante la aplicación del instrumento IMCOC; seguido del nivel de riesgo psicosocial en los dominios liderazgo y relaciones sociales en el trabajo, control sobre el trabajo, demanda de trabajo y recompensas, aplicando la batería propuesta por el Ministerio de Protección Social, para finalmente determinar su relación mediante la correlación de Pearson. Los hallazgos de este estudio indican que una empresa con un clima organizacional que posee una buena cooperación entre los miembros de la organización, un control adecuado sobre las tareas y alta satisfacción laboral tiene niveles de riesgos psicosociales intralaborales bajos concernientes principalmente con las relaciones interpersonales.
Use of graded responsibility and common entrustment considerations among United States emergency medicine residency programs
Authors: Lai Jason , Schnapp Benjamin Holden , Tillman David Simon , Westergaard Mary , Hess Jamie , Kraut Aaron
Published: April 2020

Purpose: The Accreditation Council for Graduate Medical Education (ACGME) requires all residency programs to provide increasing autonomy as residents progress through training, known as graded responsibility. However, there is little guidance on how to implement graded responsibility in practice and a paucity of literature on how it is currently implemented in emergency medicine (EM). We sought to determine how EM residency programs apply graded responsibility across a variety of activities and to identify which considerations are important in affording additional responsibilities to trainees.Methods: We conducted a cross-sectional study of EM residency programs using a 23-question survey that was distributed by email to 162 ACGME-accredited EM program directors. Seven different domains of practice were queried.Results: We received 91 responses (56.2% response rate) to the survey. Among all domains of practice except for managing critically ill medical patients, the use of graded responsibility exceeded 50% of surveyed programs. When graded responsibility was applied, post-graduate year (PGY) level was ranked an “extremely important” or “very important” consideration between 80.9% and 100.0% of the time.Conclusion: The majority of EM residency programs are implementing graded responsibility within most domains of practice. When decisions are made surrounding graded responsibility, programs still rely heavily on the time-based model of PGY level to determine advancement.
MENUNTASKAN HASIL BELAJAR MAHASISWA PRODI PENDIDIKAN KIMIA FKIP UNIVERSITAS RIAU DALAM MATA KULIAH KIMIA DASAR II MELALUI PEMBELAJARAN BERDASARKAN MASALAH TAHUN AKADEMIS 2011/2012
Authors: ' Rasmiwetti , ' Miharty , ' Rini
Published: April 2020

Basic Chemistry II course is a repetition and development of chemistry which have been learned by students in high school. Therefore, the learning outcomes of student at the course Basic Chemistry II was expected in the high category. Through observations and interviews with students was obtained information that most of the students was difficult to understand about the material. It is necessary to increase the quality of learning in order to better and complete student results through class action research by applying problem-based learning. This class action research aims to improve and complete the learning ability of students of study program of Chemical Education FKIP Riau University academic year 2011/2012 in the course of Basic Chemistry II. This study was conducted in three cycles. The increasing of mastery learning outcomes of students from the cycle I to Cycle II was 25% and from Cycle II to Cycle III was 54.17%. Improving the ability of students to learn this by: 1) Teaching takes place in groups of 5 or 6 people. 2) Using instructional media in the form of textbooks, learning2materials and Student Work Sheet. 3) Lecturers encourage student to be active when group activities. 4) Lecturers provide guidance in groups and classical. 5) Time for classical discussion was long.Keywords : Basic Chemistry II, Problem-based learning, Mastery learning outcomes.
PENGEMBANGAN LKPD PEMBELAJARAN KIMIA BERBASIS PROBLEM SOLVING UNTUK MENUNJANG PEMBELAJARAN KELARUTAN DAN HASILKALI KELARUTAN DI KELAS XI SMA
Authors: Putri Meuthia Kartika , Erviyenni Erviyenni , Haryati Sri , Rery R. Usman , Susilawati Susilawati
Published: April 2020

The objective of this research was to develop the student’s activity sheet as support the implementation. This research used a research and development Research and Development (R & D) with 4-D model of development that includes Definition, Design, Develop and Disseminate. Research and development conducted in the Laboratory of the Department of Study Program of Chemistry Education PMIPA the Faculty of Teacher Training and Education University of Riau. The object of this research was the students’ activity paper based on the problem solving. The data analysis techniques used in the study was descriptive statistical analysis, by calculating the percentage of validation value. The average score of the five aspects of student’s activity sheet by validator’s team, such as the content properness, presentation, didactic, construction (linguistic) and technical (graphical) respectively has a value of eligibility 89.58%, 93.75%,90, 96.67% and 89.5%, totality score validation is 91.9% meaning the student’s activity sheet developed (LKPD Developed) is proper be use in chemistry learning.Key Words: Student Activity Sheet, Problem Solving, Ksp
PENERAPAN MODEL E-LEARNING BERBASIS MASALAH UNTUK MENINGKATKAN HASIL BELAJAR DAN MOTIVASI BELAJAR MAHASISWA PADA MATAKULIAH AN-ORGANIK II
Authors: Yasmi Elva , Yenni Ervi , Albeta Sri Wilda
Published: April 2020

This study was conducted in an effort to improve learning outcomes and learning motivation. The population in this study were students of Chemistry Education, University of Riau. The Samples of this research is fifth semester students. Class experiments using problem-based e-learning model, while the control class using classical learning. To test research hypothesis on difference learning motivation and improved learning outcomes using independent sample T-test SPSS-20. To Test research hypothesis on Correlations between students motivation in learning and learning outcomes using Correlations SPSS-20. The result showed that : 1) there was a significant difference in motivation and learning outcomes of students who are taught using a problem-based e-learning model, than students who are taught using classical learning; 2) there was no correlation learning motivation and learning outcomes of students who are taught by classical learning; 3) there was correlation between motivation to learn the results of student learning is taught by Problem-Based E-Learning Model.
PENGINTEGRASIAN BUDAYA MELAYU DALAM PENGEMBANGAN PERANGKAT PEMBELAJARAN KOLOID UNTUK PENINGKATAN PENDIDIKAN KARAKTER PESERTA DIDIK
Authors: Haryati Sri , Erviyenni Erviyenni , Rery Usman , Yasmi Elva , Rahmi Fauzia
Published: April 2020

The research aims to develop devices integrated learning Malay culture in the form of RPP, LKPD and evaluation tools to improve character education learners. This type of research is the development of research (research and the development) with the procedural model. Research has been conducted in the development of chemistry teaching lab FKIP Riau University from June to November 2016. The prototype learning device generated through research is Learning Implementation Plan (RPP) consisting of 4x meeting, Activity Sheet Students (LKPD) for 4x meetings and 1 set of tools evaluation. Product prototype learning device has been evaluated by 3 validator. Data collected through questionnaires and observation techniques. The data analysis technique is a descriptive quantitative by calculating the percentage of the value of the validation. The average score ratings seventh aspect of the RPP is 95.95% with a valid category. The average score of the four aspects of the feasibility assessment LKPD is 95.95% with a valid category. The average score of all fifth aspects of the feasibility assessment evaluation tool was 94.58% with a valid category. While the percentage of learners response to LKPD is 97.36% which is at the criteria very well.
PENGEMBANGAN MODUL PEMBELAJARAN KIMIA BERORIENTASI CHEMOENTREPRENEURSHIP (CEP) PADA POKOK BAHASAN SENYAWA TURUNAN ALKANA KELAS XII SMA/MA
Authors: Afwa Siti Rahmi , Abdullah Abdullah , Linda Roza
Published: April 2020

Penelitian pengembangan modul senyawa turunan alkana berorientasi chemoentrepreneurship pada pokok bahasan senyawa turunan alkana  untuk kelas XII SMA/MA merupakan suatu inovasi pengembangan bahan ajar sesuai dengan tuntutan kurikulum 2013 yaitu life skill peserta didik. Penelitian ini dirancang menggunakan desain penelitian dan pengembangan (R & D) dengan model pengembangan Plomp.  Secara garis besar, tahapan penelitian dengan menggunakan model Plomp meliputi fase investigasi awal; fase perancangan; fase realisasi/konstruksi, dan fase validasi, uji coba dan revisi, dan fase implementasi. Pengembangan modul berorientasi chemoentrepreneurship pada pokok bahasan Senyawa Turunan Alkana hanya dilakukan sampai fase validasi, uji coba dan revisi. Hasil analisis lembar valiadasi yang berupa penilaian dan saran oleh tim validator meliputi beberapa aspek  yaitu meliputi aspek self-instructional, aspek self-contained, aspek stand alone, aspek adaptive, aspek user friendly, aspek chemoentrepreneurship (CEP), aspek pedagogik dan aspek kegrafisan. Kuesienor respond pengguna meliputi guru dan peserta didik. Modul dinyatakan valid dengan skor keseluruhan validasi 92,77%. Skor respon pengguna yaitu guru dan peserta didik berturut turut adalah adalah 93,94% dan 93,33% dengan kriteria sangat baik.
MENINGKATKAN PRESTASI BELAJAR KIMIA SISWA KELAS X MELALUI PENERAPAN METODE TUTOR TEMAN SEBAYA DI SMA NEGERI 3 BUKIT BATU
Authors: Agustini Agustini , Yandriani Yandriani
Published: April 2020

Pembelajaran Kimia di SMA Negeri 3 Bukit Batu saat ini kurang memuaskan. Karena masih banyak masalah yang mengakibatkan siswa kurang antusias untuk belajar. Pembelajaran kurang menarik minat siswa sehingga siswa mudah bosan dan kurang aktif; dan prestasi belajar siswa rendah. Peneliti memilih metode tutor teman sebaya dalam proses belajar agar dapat memberikan kesempatan kepada siswa untuk berpartisipasi aktif. Sehingga dapat meningkatkan pemahaman siswa terhadap mata pelajaran Kimia. Metode tutor teman sebaya dilakukan dengan cara mengadakan kegiatan diskusi kelompok guna menyelesaikan persoalan yang diberikan guru dan presentasi dari masing-masing kelompok  pada setiap pertemuan. Beberapa siswa pintar dipilih untuk menjadi tutor didsalam kelompoknya masing- masing. Dengan demikian pembelajaran Kimia tidak hanya mendengarkan penjelasan dari guru tetapi menyangkut kegiatan diskusi serta latihan soal di setiap pertemuan. Subjek yang digunakan dalam penelitian ini adalah siswa kelas X SMA Negeri 3 Bukit Batu Tahun Pelajaran 2017/ 2018 yang berjumlah 20 orang. Adapun kesimpulan dari penelitian ini adalah penerapan metode tutor teman sebaya pada materi Redoks di kelas X Tahun Pelajaran 2017/2018, terbukti dapat meningkatkan prestasi belajar siswa, yang diindikasikan dengan adanya peningkatan dalam ulangan harian siswa, kerjasama antar kelompok, dan rasa tanggung jawab terhadap tugas- tugas yang diberikan.
PEMBELAJARAN BERBASIS PROYEK UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS DAN PENGUASAAN KONSEP SISWA SMKN KEHUTANAN PROVINSI RIAU PADA MATERI PEMISAHAN CAMPURAN
Authors: Rahmadani Sri , Albeta Sri Wilda
Published: April 2020

Penelitian ini bertujuan untuk melihat peningkatan keterampilan proses sains dan penguasaan konsep siswa menggunakan pembelajaran berbasis proyek pada materi pemisahan campuran. Metode yang digunakan adalah Weak Experimental  One Group Pretest-Postest Design. Objek penelitian adalah siswa kelas X SMKN Kehutanan Provinsi Riau. Teknik analisis data yang digunakan adalah analisis statistik deskriptif,  dengan cara menghitung persentase aspek keterampilan proses sains siswa (memprediksi, mengelompokkan, menerapkan konsep, berkomunikasi, observasi, merancang percobaan) yang berimplikasi pada peningkatan penguasaan konsep siswa. Aspek keterampilan proses sains siswa yang mengalami peningkatan tertinggi adalah aspek mengelompokkan sebesar 97%, dan terendah dicapai pada aspek menerapkan konsep sebesar 54% serta peningkatan penguasaan konsep pemisahan campuran sebesar 66,6% dengan kategori sedang. Dapat disimpulkan bahwa pembelajaran berbasis proyek dapat meningkatkan keterampilan proses sains dan penguasaan konsep siswa pada materi pemisahan campuran.
IDENTIFIKASI MISKONSEPSI MATERI KESETIMBANGAN KIMIA MENGGUNAKAN TES DIAGNOSTIK PILIHAN GANDA TIGA TINGKAT (THREE-TIER MULTIPLE CHOICE) PADA PESERTA DIDIK KELAS XI MIA SMA NEGERI 2 PEKANBARU
Authors: Akbar Zaki Dayatul , Herdini Herdini , Abdullah Abdullah
Published: April 2020

The aim of this research were to know misconceptions and the category level of misconceptions in the second year students of SMA Negeri 2 Pekanbaru aboutt concepts of chemical equallibrium. This research took place in SMA Negeri 2 Pekanbaru and the data were collected on April 2017. was all the students of XI MIA class of four classes. The population consisted of 161 students. The sample was all the population. This research was descriptive quantitative. The technique of collecting data used diagnostic test and interview. The result showed that students found misconception in the definition concept of chemical equallibrium with the percentage was 34,78% (category of average), for the concept of heterogen and homogen was 36,335% (average), the concept of dissociation degree was 33,54% (average), the concept of Kc measurement was 43,785% (average), the concept of Kp measurement was 27,55% (poor), the principle concept of Le Chatelier was 36,764% (average), the concept of using chemical equallibrium in world industry was 23,60% (poor).
PENGGUNAAN MODEL PEMBELAJARAN DISCOVERY LEARNING MELALUI MEDIA WORD SQUARE UNTUK MENINGKATKAN KEAKTIFAN DAN KETUNTASAN BELAJAR SISWA PADA POKOK BAHASAN LARUTAN ELETROLIT DAN NON ELEKTROLIT DAN KOLOID DI KELAS X KIMIA ANALIS SMKN 2 PEKANBARU
Authors: Fitri Lidiana , Nofianti Nofianti
Published: April 2020

This research study about application of discovery learning model through word square media to increase activity and student mastery learning. This research goal to know whether discovery learning model through word square media can increase activity and student mastery learning and whether this model were pleased by student. This research is class action research consisted of 2 cycle, where first cycle is electrolyte and non-electrolyte solutions chapter and second cycle is colloid. This research done in SMKN 2 Pekanbaru at X Kimia Analis class in year 2016/2017. In this research, data collected with teacher and student observation sheet, LKS and evaluation value, block test value and student perception enquette in lerning as supporter data. As for result obtained for the student activity, clasical student mastery learning according to national and school standard in first cycle average are 53, 40%, 96,97% and 93,94% and also for second cycle are 65,36%, 100% and 93,94%. Student perception to study discovery learning through word square media applied get positive respon, this matter can see from student percentage amount chosening very agree and agree for the first cycle and second cycle enquette answer successively are 91,73% and 93,47%.
PENERAPAN MODEL STUDENT FACILITATOR AND EXPLAINING UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS PESERTA DIDIK PADA POKOK BAHASAN TERMOKIMIA
Authors: Yati Catur Darma , Susilawati Susilawati , Azmi Johni
Published: April 2020

Penerapan model pembelajaran kooperatif Student Facilitator and Explaining (SFAE) telah dilakukan. Penelitian ini bertujuan untuk meningkatkan kemampuan berpikir kritis peserta didik pada pokok bahasan termokimia di kelas XI MIA MAN 2 Model Pekanbaru. Bentuk penelitian adalah eksperimen dengan rancangan penelitian randomized control group pretest-posttest. Sampel dalam penelitian ini adalah kelas XI MIA 4 sebagai kelas eksperimen dan kelas XI MIA 5 sebagai kelas kontrol yang ditentukan secara acak setelah dilakukan uji normalitas menggunakan uji Liliefors dan diuji homogenitas menggunakan uji kesamaan dua rata-rata. Kelompok eksperimen diberi perlakuan dengan penerapan model pembalajaran Student Facilitator and Explaining (SFAE) sedangkan kelompok kontrol tanpa penerapan model pembalajaran SFAE. Analisa data untuk pengujian hipotesis dilakukan menggunakan uji-t pihak kanan. Berdasarkan hasil analisis pengolahan data didapatkan thitung > ttabel yaitu 2,56 > 1,67 artinya penerapan model pembelajaran kooperatif SFAE dapat meningkatkan kemampuan berpikir kritis peserta didik pada pokok bahasan termokimia di kelas XI MIA MAN 2 Model Pekanbaru. N-Gain peningkatan kemampuan berpikir kritis peserta didik pada pokok bahasan termokimia di kelas XI MIA MAN 2 Model Pekanbaru sebesar 0,75 dengan kategori sedang.
PENERAPAN STRATEGI PROCESS ORIENTED GUIDED INQUIRY LEARNING (POGIL) UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA
Authors: Yusuf Nia Junita , Herdini Herdini , Rery Radjawali Usman
Published: April 2020

Penelitian ini bertujuan untuk mengetahui peningkatan prestasi belajar peserta didik dengan penerapan strategi process oriented guided inquiry learning (POGIL) pada pokok bahasan senyawa hidrokarbon. Penelitian ini dijalankan di kelas XI SMA Negeri 10 Pekanbaru. Metode penelitian yang digunakan adalah eksperimen dengan desain penelitian randomized control group pretest-posttest. Instrumen penelitian berupa soal pilihan ganda materi senyawa hidrokarbon yang telah diuji validitas dan reliabilitasnya (r = 0,953). Sampel dalam penelitian ini terdiri atas kelas eksperimen (n = 36) dan kelas kontrol (n = 35) sebagai kelas kontrol. Kelompok eksperimen diberi perlakuan dengan penerapan strategi POGIL, sedangkan kelompok kontrol tanpa penerapan strategi POGIL. Analisa data dilakukan menggunakan uji-t pihak kanan. Berdasarkan hasil analisis data diperoleh thitung > ttabel (3,07 ˃ 1,67) dengan α = 0,05, dk = 69 sehingga dapat disimpulkan bahwa penerapan strategi POGIL dapat meningkatkan prestasi belajar peserta didik pada pokok bahasan senyawa hidrokarbon.
PENGEMBANGAN MODUL TERINTEGRASI PENDIDIKAN KARAKTER PADA MATERI KOLOID
Authors: Viorita Nensia , Holliwarni Betty , Erviyenni Erviyenni
Published: April 2020

Penelitian ini bertujuan untuk mengembangkan modul terintegrasi pendidikan karakter pada materi koloid. Penelitian pengembangan menggunakan model 4-D yang memiliki 4 tahap yaitu, Define, Design, Develop dan Disseminate. Penelitian hanya dilakukan sampai pada tahap Develop. Validitas modul dinilai dengan 4 aspek, yaitu aspek kelayakan isi, aspek kebahasaan, aspek penyajian dan aspek kegrafisan. Untuk melihat kepraktisan modul dilakukan uji terbatas di dua sekolah, yaitu SMAN 5 Pekanbaru dan MA Darel Hikmah Pekanbaru. Hasil penilaian yang dilakukan oleh 3 validator menyatakan bahwa modul valid dengan persentase rata-rata sebesar 91,59%. Hasil angket terbatas pada 30 orang peserta didik adalah 97,17% dan hasil respons dari 2 orang guru kimia adalah 95,83%. Berdasarkan hasil validasi dan uji terbatas, modul terintegrasi pendidikan karakter pada materi koloid dinyatakan valid dan praktis.
PENERAPAN STRATEGI BELAJAR SQ4R UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK
Authors: Usmansyah Wida , Herdini Herdini , Copriady Jimmi
Published: April 2020

Penelitian ini bertujuan untuk meningkatkan hasil belajar peserta didik dengan penerapan strategi belajar Survey, Question, Read, Recite, Record, Review (SQ4R) pada pokok bahasan Hidrokarbon di kelas XI Matematika Ilmu Pengetahuan Alam (MIA) SMAN 3 Pekanbaru. Bentuk penelitian adalah kuasi eksperimen dengan rancangan penelitian randomized control group pretest-posttest design. Populasi seluruh kelas XI MIA yang terdiri dari tiga kelas, yang selanjutnya dilakukan uji normalitas dan homogenitas terhadap data nilai test pada materi sebelumnya. Sampel penelitian adalah dua kelas yang memenuhi syarat normalitas dan homogenitas dipilih secara acak, yaitu kelas XI MIA 3 sebagai kelas eksperimen dan kelas XI MIA 2 sebagai kelas kontrol. Kelas eksperimen diberi perlakuan penerapan model pembelajaran Direct Instruction menggunakan strategi belajar SQ4R. Sedangkan kelas kontrol menggunakan model pembelajaran Direct Instruction saja. LKPD yang digunakan telah diuji validitas oleh pakar. Hasil pengujian instrumen dikatakan valid dan reliabel. Pengujian hipotesis menggunakan uji-t satu arah (pihak kanan). Hasil analisis statistik diperoleh thitung > ttabel ; yaitu 8,67 > 1,67, dengan α = 0,05 dan dk = 67 . Berdasarkan hasil pengujian statistik disimpulkan penerapan strategi belajar SQ4R dapat meningkatkan hasil belajar peserta didik pada pokok bahasan Hidrokarbon kelas XI MIA SMAN 3 Pekanbaru.
PENGEMBANGAN INSTRUMEN LITERASI DIGITAL SEKOLAH, SISWA DAN GURU
Authors: Febliza Asyti , Okatariani Oktariani
Published: April 2020

This study aims to develop digital literacy instruments for schools, teachers and students whose function is to measure the extent of the digital literacy levels of schools, teachers, and students. It is not possible for a school to follow the development of science and technology if the school's potential is inadequate and its human resources are not ready. Therefore, the development of digital literacy instruments needs to be made in order to identify the level of readiness of schools, teachers and students in facing the digital era in the industrial revolution 4.0. Subjects of the study were 90 respondents consisting of 30 teachers and 60 students in SMA Negeri 14 Pekanbaru. The questionnaire that was made was first validated by 2 expert validators, after being declared valid by the expert validator, then the questionnaire was conducted a limited test to calculate the level of validity and reliability of each question item. The questionnaire uses a Likert scale with 3 categories of answer choices (often, rarely, never or there is, is being planned, no, etc.). Based on the results and conclusions, conclusions can be drawn, namely: the items that can be used as data collection tools on the school digital literacy questionnaire instrument are 23 questions, while the items that can be used as data collection tools on the teacher's digital literacy questionnaire are 52 items and instrument digital student literacy questionnaire as many as 31 questions. Based on the reliability criteria, the three digital literacy questionnaires show high and very high reliability criteria with a reliability level greater than 0.684.
Tribonacci numbers that are concatenations of two repdigits
Authors: Ddamulira Mahadi
Published: April 2020

Let $ (T_{n})_{n\ge 0} $ be the sequence of Tribonacci numbers defined by $ T_0=0 $, $ T_1=T_2=1$, and $ T_{n+3}= T_{n+2}+T_{n+1} +T_n$ for all $ n\ge 0 $. In this note, we use of lower bounds for linear forms in logarithms of algebraic numbers and the Baker-Davenport reduction procedure to find all Tribonacci numbers that are concatenations of two repdigits.
O Uso de Jogos Didáticos no Ensino de Doenças Intestinais Causadas por Protozoários Entamoeba histolytica e Giardia duodenalis
Authors: Romeiro Sinara Silva , Paula Patricia de Lima , Rosa Florence Mara
Published: April 2020

O ensino das doenças parasitárias tornou-se algo essencial e de extrema relevância na sala de aula, principalmente por se fazerem presentes no cotidiano dos alunos e da comunidade na qual estão inseridos. Geralmente as doenças intestinais exibem sintomas que estão fortemente ligados a quadros de diarreia e desnutrição, fazendo com que o desenvolvimento físico e intelectual da criança e do adolescente seja prejudicado. Neste sentido, foi desenvolvido um trabalho com os escolares no intuito de levar conhecimento sobre os principais protozoários que podem infectar o homem, bem como as medidas de controle. Além dos métodos tradicionais de ensino, também foram utilizados jogos didáticos como uma forma de auxiliar no processo de ensino e aprendizagem sobre o tema abordado. A atividade foi realizada com 20 alunos do 7º ano do ensino fundamental, no qual o tema “seres vivos” é abordado, em especial, os temas protozoários e helmintos. Durante o decorrer das aulas, por meio do uso de metodologias alternativas (jogos didáticos), foi perceptível o quanto os discentes estavam envolvidos na realização das tarefas propostas e faziam indagações além dos conteúdos abordados. Diante dos resultados obtidos, verificou-se que a aplicação de atividades diferenciadas é de extrema importância para as inovações em sala de aula. Neste contexto, foi observada a função educativa do jogo didático durante sua aplicação com os alunos, notando que tais atividades favoreceram a aquisição e retenção de conhecimento bem como a satisfação por parte dos alunos.
Görme Engelli Öğrenciler İçin Matematik Materyalleri Tasarımı
Authors: ATASAY Merve
Published: April 2020

Matematik konularının çoğu, görsel unsur içermese de görsel modellerle desteklenerek anlatılmaktadır. Örneğin, tam sayılar konusu sayı doğrusu modeli ile anlatılmaktadır. Görme engelli öğrencilerin bu modelleri kullanarak konuları öğrenmelerinde özellikle dokunma duyularından yararlanmaları gerekmektedir. Bu çalışmanın amacı, 7.sınıf seviyesinde ilk kez karşılaşılan tamsayılar, rasyonel sayılar ve koordinat sistemi konularını ele alan ve özellikle kaynaştırma sınıflarında görme engelli öğrencilerin de anlayarak kullanabileceği materyallerin tanıtılarak kullanışlılığını tartışmaktır. Bu amaçla çalışmanın yöntemi durum çalışması olarak belirlenmiştir. Bu çalışma kapsamında 7. sınıf matematik derslerinde kullanılmak üzere, yapımı ve kullanımı oldukça pratik beş farklı materyal tasarımı yapılmıştır. Bunlardan ilki tamsayılarda işlemler konusunun öğretiminde kullanılabilecek tam sayı pulları tasarımıdır. Ayrıca tamsayılar ve rasyonel sayılar konularının öğretiminde kullanılabilecek sayı doğrusu modeli ile rasyonel sayılar konusunda kullanılabilecek kesir takımı ve ondalık gösterim takımı da tasarlanmıştır. Son olarak, dik koordinat düzlemi tasarımı yapılmış ve grafik çizimi yapmalarına imkân verecek materyaller eklenmiştir. Tasarlanan bu materyallerin birer örnekleri yapılarak, 7. sınıfa devam eden ve belirtilen konuları yeni öğrenen doğuştan görme engelli bir öğrenci ile kullanışlılıkları test edilmiştir. Veriler gözlem ve görüşme yapılarak elde edilmiştir. İlk olarak öğrencinin dersler boyunca daha aktif olduğu gözlenmiştir. Derslerin sonunda öğrenci konuyu daha iyi anladığını ifade etmiş ve sorulan sorulara doğru cevap vermiştir.
Pinus Leucodermis Ant. et Pinus Nigra Arn. en Calabre Septentrionale
Authors: Pennacchini Vito , Bonin Gilles
Published: April 2020

Pinus leucodermis Ant. e Pinus nigra Arn., già indicati nell' appennino Lucano-Calabrese, sono signalati in tutte le stazioni di questa regione-Parecchie sono nuove. Uno studio anatomico comparato degli aghi permette di stabilire quelche relazione di ordine sistematico tra il Pinus nigra, il Pinus nigra di Villetta Barrea, e le subspecies nigricans, laricio, pallasiana di Pinus agg. nigra.

I raggruppamenti constituiti dai due pini, studiati in questo lavoro sono analizzati dal punto di visto fitosociologico.

Un ragruppamento à Pinus nigra et Genista sericea viene descritto.

La situazione di questi due pini nei piani di vegetazione dell' Appennino è precisata.

Dopo uno studio ecologico succincto, viene proposta una prospettiva dell' utilizzazione di questi pini nel rimboschimento.
Analyse de l'endémisme dans la faune des eaux courantes de la Corse
Authors: Giudicelli Jean
Published: April 2020

Corsica, along with the Iberian Peninsula and the Caucasian range, represents one of the most important centers of endemism for the fauna of Europe's fresh and running waters.

The Plecoptera, Trichoptera and Diptera Blepharoceridae comprise the largest percentage of the endemic species . Endemicity is found primarily in the communities of springs and in the populations of streams at high altitudes. The phyletic and biogeographical origin of these endemic species from Corsica are analyzed.

The Corsican endemisms are the remains of the European tertiary fauna which survived the insular shelter.
Influence des facteurs abiotiques sur la dynamique des peuplements de Collemboles de la sansouire camarguaise
Authors: Poinsot-Balaguer Nicole
Published: April 2020

Les stations du programme «sansouire», Salin de Badon et La Gacholle suivies depuis février 1973, permettent de donner deux bons exemples de la dynamique des populations de Collemboles en fonction des varia tions de la teneur en eau et en sel du sol. Les stations exondées sont les plus riches qualitativement et quantitativement. Elles sont occupées par des groupements de Collemboles ubiquistes et eurytopes. On peut penser que ces insectes sont tous capables de supporter des variations micro-climatiques importantes, ce qui n'est pas le cas de nombreuses espèces provençales que l'on ne retrouve pas dans le delta.

A partir d'une réserve de faune cantonnée dans les biotopes surélevés à l'abri de la montée des eaux temporaires, il y a déplacement de peuplements de Collemboles vers les zones libérées par le retrait de la nappe. Celui-ci est d'autant plus restreint que la teneur en sel est élevée même si la teneur en eau est suffisante, ce qui est le cas dans les associations à Arthrocnemum glaucum. La présence de mares temporaires joue un rôle capilal dans la dispersion de la faune qui, sauf pour une espèce inféodée aux berges des eaux (f. palustris ) s'effectue toujours des «milieux terrestres» vers les places vides. L'amplitude des migrations est fonction du cycle des eaux. Dans le cas d'arrêt prolongé de la remontée de la nappe -ce qui correspond à un adoucissement du biotope (à Salin de Badon par exemple) -presque toutes les espèces s'installent dans les places vides.

Cette dynamique est comparable à ce que l'on observe autour des étangs doux de Provence et d'autres régions de la zone tempérée.
Les groupements forestiers de Grèce Centro-Méridionale
Authors: Barbero Marcel , Quézel Pierre
Published: April 2020

Gli autori studiono la posizione fitosociologica delle foreste della Grecia nella parte centrale e meridionale del Paese.

La significazione biogeografica, climatológica delle foreste viene studiata.

L'evoluzione dei raggruppamenti dal punto di visto dinamico viene proposta e paragonata con altre formazione forestale del bacino mediterraneo.
Les formations à conifères méditerranéens en Syrie littorale
Authors: Barbero Marcel , Chalabi N. , Nahal Ibrahim , Quézel Pierre
Published: April 2020

Les auteurs étudient les groupements à Conifères méditerranéens : Pinus brutia, Pin d’Alep et Cyprès en Syrie littorale. Ils apportent un certain nombre de précisions sur la composition floristique de ces formations dont ils donnent une interprétation phytosociologique.

Parallèlement sont envisagés les rapports végétation-climat et les relations existant entre les groupements végétaux ainsi définis, les séries dynamiques et les étages altitudinaux de végétation.
Etude sylvo-pastorale de la tétraclinaie de l'Amsittène (Maroc)
Authors: Benabid Abdelmalek
Published: April 2020

Having studied the phytosociological and ecological characters of the Thuya puplements at Amsittene, the author studies in details the regeneration conditions and forestery values of this coppice. Modes for forestry and pastorale use are looked upon.
Réflexions sur le problème d'aménagement des espaces plantés d'une autoroute, en région méditerranéenne. Quelques incidences de cette autoroute sur l'environnement
Authors: Safi Samir
Published: April 2020

To grass the banks of a highway and to manage its planted areas, in a mediterranean region, raise problems directly connected with the environmental characteristics of the site in question. Optimal choice of vegetal species for such a purpose must, imperatively, take into consideration their ecological requirements, in particular : interspecific competition, enrooting mode of these species, their periodicity and their ecological adaptability. Pollution by automobile exhaust gases calls in the notion of tolerance and resistance of vegetation to these toxic elements. Impacts at a distance of the highway are also discussed : landscape modifications, perturbation of the microclimate, phonic channel, modification of the riparian vegetation...
Remarques sur quelques groupements végétaux assurant la transition entre les étages montagnard et subalpin en Corse
Authors: Gamisans Jacques
Published: April 2020

The author presents six vegetal communities which assure in Corsica the transition between montane woods and subalpine formations. A new association is described : Pyrolo-Fagetum sylvaticae. Betula pendula is cited in subalpine level.

In a rider, the typification of the names of vegetal communities described previously in Corsica is given.
Variations spatio-temporelles de la salinité du sol d'un peuplement de pins pignons (Pinus pinea L.) du littoral méditerranéen
Authors: Ibrahim Muhammad , Rapp Maurice
Published: April 2020

Soil salinity variation in a coastal.

A study was undertaken during one year in a sandy soil of the mediterranean coast, in stands colonised by trees Pinus pinea (L) stand.

Clear differences were observed in the salinity content of the two sites : it is much lower under the grass site than the forest site, except for the surface layer. These differences could be attributed to biotic and climatic factors.The data indicated also that the seasonal évolution of total salinity and the concentration of the majors ions : Na, K, Ca, Mg and Cl is very correlated with climatic factors such as precipitation and evaporation. The highest values are observed in July and August, during the dry season, the lowest in winter, after the rains of the autumn.

Regarding chloride concentration, the maximum observed during the dry months was nearly 2 g l-1 This value allow to use a neutron moisture probe for measuring the soil water in this site.
Analyse des communautés de scarabéidés coprophages dans le maquis corse et étude de leur rôle dans l'utilisation des excréments
Authors: Lumaret Jean-Pierre
Published: April 2020

An analysis of the dung beetles communities (Coleoptera, Scarabaeidae) has been carried out in Corsica (valley of the Fango). 39 species have been collected. They are distributed according to several factors ; the most important are density and height of the vegetation. Most species usualy live into open stations and they disappear as scrub become closed. The quantity of organic matter which is incorpaorated into the ground has been estimated for the dung beetle Geotrupes spiniger Marsh. Its action is most important into open stations.
À propos de certains peuplements forestiers de la Drôme
Authors: Gamisans Jacques , Grüber Michel
Published: April 2020

Les auteurs font une description phytosociologique des groupements sylvatiques aux étages collinéen et montagnard de divers secteurs de la Drôme. Parmi les quinze groupements mis en évidence, deux correspondent à des associations nouvelles (Teucrio scorodoniae-Fagetum et Vulpariae-Fagetum).
L'élaboration des "groupes écologiques". Une étude sur la dorsale calcaire du Rif (forêt de Talassemtane)
Authors: Germani B. , M'Hirit Omar
Published: April 2020

Les auteurs étudient les relations entre 239 espèces végétales et 10 variables écologiques totalisant 57 modalités , relevées le long de transects, sur 117 placettes de 100 à 300 m2 chacune .

L'analyse des correspondances du tableau de contingence (239 X 57) a permis de dégager les grands traits écologiques du massif forestier étudié et, d'élaborer 13 groupes d'espèces indicateurs des différents milieux.
Relations entre variables du "milieu édaphique" et groupements végétaux préforestiers et forestiers au Mont Ventoux
Authors: Bonin Gilles , Thinon Michel
Published: April 2020

Ce travail utilise l'analyse multidimensionnelle pour comparer l’évolution du milieu sous divers reboisements implantés depuis plus d’un siècle sur le versant méridional du Mont Ventoux. Les résultats permettent de souligner l ’individualisation des reboisements en Pins avec une régression notable du taux de calcium échangeable et de faibles taux d'azote et d’acides humiques.

Par ailleurs, Quercus pubescens Willd. apparaît comme un élément très favorable à la reconstitution des sols dégrades en région méditerranéenne.
Chapitre V. Les groupements végétaux du Niolu (Corse). Carte de la végétation au 1/25 000
Authors: Gamisans Jacques , Grüber Michel , Cerutti F.
Published: April 2020

Les auteurs décrivent les séries de végétation en mettant en évidence les particularités du Niolu vis-à-vis du reste de la Corse. Ces séries correspondent aux étages méditerranéen, supraméditerranéen, montagnard, subalpin /oroméditerranéen et alpin. Un certain nombre de remarques sont faites sur les relations entre la végétation d’une part, le substrat, le climat et l’impact humain d’autre part.
Tentatives d'analyses polliniques de la brèche et des tufs de Peyre (Aveyron, France)
Authors: Coûteaux Michel , Goeury Claude
Published: April 2020

Twenty-nine samples from travertine material have been treated using the method of pollen concentration with the Thoulet solution. The sediment is characterized by an important destruction of pollen grains and high probabilities of pollution. The pollen of some thirty taxa is found the origin of which is doubtful. Picea and Carya pollen may be contemporaneous with the travertine deposit.
Analyse pollinique d'une séquence tourbeuse de Provence orientale (Seillons-Source d'Argens, Var, France )
Authors: Triat-Laval Hélène , Reille Maurice
Published: April 2020

Cette étude pollinique permet de retracer l'histoire récente (depuis la fin de l'Atlantique) de la végétation provençale varoise dans la région des sources de l’Argens. Elle montre que l'incidence profonde de l'action humaine sur la végétation est relativement récente. La pauvreté de ce matériel en grains de pollen a rendu nécessaire la mise en oeuvre de techniques spéciales d'enrichissement.
Les reptiles du Liban: 1 - Nomenclature et notes écologiques
Authors: Hraoui-Bloquet Souad
Published: April 2020

36 species of Lebanese Reptiles are mentionned : 17 species of Lizards, 17 species of Snakes and 2 species of Turtles. The repartition of all these species is presented and also first elements of their ecology.
Contribution à l'étude des relations trophiques microarthropodes - matière organique: collemboles - litière de pin
Authors: Poinsot-Balaguer Nicole
Published: April 2020

Feeding habits for two species of Collembola are investigated using pine needles in various stages of decomposition. Fresh needles are never eaten and the Collembola show a preference for needles decomposed by two fungi species Cladosporium and A Itemaria.

The grazing by the Collembola Folsomides angularis increases the metabolism of nutriants growing on the pine needles. Microarthropods play a little part in the energy flow of the soil they represent an indispensible pathway in the process of decomposition of the organic matter because they provide specific interrelations with the various compounds of the soil.