bluuebunny/crossref_metadata_2025_split huggingface dataset:
PROFIL PERUBAHAN KONSEPTUAL SISWA PADA MATERI KEPENDUDUKAN DAN PENCEMARAN LINGKUNGAN
Authors: Muchyar Lusiana Dwi Hastuti , Widodo Ari , Riandi Dr. 
Published: September 2016

The purpose of this study was to understand students’ initial and final concept profile, in order to investigate the process and the patterns of students’ conceptual change. This study was conducted because many students have a conception which is not in accordance with the scientific conception for environmental problems such as global warming, ozone layer depletion, acid rain and radioactive pollution caused by environmental pollution. Research method was descriptive method and subjects used in this study were seventh grade students taught by experienced teachers and pre-service teacher in one of junior high schools in Bandung. The instrument used to view the initial conception profile, final conception profile, and the patterns of students' conceptual change was a written test in the form of multiple choice questions along with the explanations that is given at the beginning and the end of the lesson. Tests answers were then qualitatively analyzed. Analysis showed that conceptual change happen in students in both students groups. Conceptual change process happened on greenhouse effect, environment’s carrying capacity, CFC gases, and global warming concept. Furthermore, analysis also showed students’s conceptual change patterns, i.e. changing to be positive, changing to be negative, still positive, and still negative.Keywords: conceptual change, conceptual change patterns, initial conception profile, final conception profileABSTRAK Penelitian ini bertujuan untuk mengetahui profil konsepsi awal dan profil konsepsi akhir siswa serta untuk melihat proses dan pola perubahan konseptual siswa. Penelitian ini dilakukan karena banyak siswa yang memiliki konsepsi yang tidak sesuai dengan konsepsi ilmiah mengenai masalah lingkungan seperti pemanasan global, deplesi lapisan ozon, hujan asam dan polusi radioaktif yang diakibatkan oleh pencemaran lingkungan. Metode penelitian yang digunakan adalah metode deskriptif. Subjek penelitian ini adalah siswa kelas VII yang diajar oleh guru berpengalaman dan guru praktikan di salah satu SMP di Kota Bandung. Instrumen yang digunakan untuk melihat profil konsepsi awal, profil konsepsi akhir, serta pola perubahan konseptual siswa adalah tes tertulis berupa soal pilihan ganda disertai dengan penjelasan yang diberikan pada awal pembelajaran serta akhir pembelajaran. Jawaban dari tes tersebut kemudian dianalisis secara kualitatif. Hasil analisis menunjukkan bahwa terjadi perubahan konseptual pada siswa, baik yang diajar oleh guru berpengalaman, maupun yang diajar oleh guru praktikan. Proses perubahan konseptual ini terjadi pada beberapa konsep seperti konsep efek rumah kaca, daya dukung lingkungan, gas CFC, serta pemanasan global. Selain itu, hasil analisis juga menunjukkan adanya pola perubahan konseptual pada siswa yaitu berubah positif, berubah negatif, bertahan positif, dan bertahan negatif.Kata kunci: perubahan konseptual, pola perubahan konseptual, profil konsepsi awal, profil konsepsi akhir
KOMPOS SERASAH LAHAN PERTANIAN DAN IMPLEMENTASINYA DALAM PEMBELAJARAN SUB MATERI PELESTARIAN LINGKUNGAN
Authors: Ariyati Eka , Hayati Mrs. 
Published: September 2016

Most people in West Kalimantan rely heavily on the fields as an agricultural land. Farmers’ lacks of insight in terms of land management often cause damage to the environment. One alternative in processing agricultural land is to change the system of agricultural land by slash and burn clearing into composting, in which slash litter composting is a method where the slash was not burned but processed into compost. The use of compost from slash and burn activity has not yet tested as an alternative effort in reducing the environmental damage caused by fires. This study begins by examining the effect of slash and burn compost on growth and production of lettuce (Lactuca sativa L). Information obtained from the results was then compiled into Student Worksheet (LKS) and applied on the environmental conservation sub material in class X of one of Senior High Schools in Pontianak-West Kalimantan. The purpose of this study was to observe students' response towards worksheets uses. The method used in this study was descriptive, while instrument to distinguish student's response was enclosed questionnaire using a Likert scale. Results showed that students' response to the use of worksheets as a means to help learning process was strong (78.4%), with average worksheets score of 82.78.Keywords: compost, environment, worksheet, conservationABSTRAKSebagian besar masyarakat Kalimantan Barat sangat mengandalkan sawah atau ladang sebagai lahan pertanian. Kurangnya wawasan petani dalam pengelolaan lahan sering menyebabkan kerusakan lingkungan. Salah satu alternatif dalam pengolahan lahan pertanian adalah mengubah metode pembukaan lahan pertanian dari tebas bakar menjadi tebas kompos. Tebas kompos merupakan metode pemanfaatan serasah hasil tebasan ketika tebasan tidak dibakar melainkan diolah menjadi kompos. Penggunaan kompos serasah hasil tebasan belum pernah diujikan sebagai alternatif upaya dalam menurunkan kerusakan lingkungan akibat pembakaran lahan. Penelitian ini diawali dengan menguji kompos serasah lahan pertanian terhadap pertumbuhan dan produksi selada (Lactuca sativa L). Informasi yang diperoleh dari hasil penelitian disusun menjadi Lembar Kerja Siswa (LKS) sub materi pelestarian lingkungan dan diaplikasikan dalam pembelajaran di kelas X salah satu SMA di Pontianak-Kalimantan Barat. Tujuan dari penelitian ini adalah melihat respon siswa terhadap pemanfaatan LKS. Metode yang digunakan dalam penelitian ini adalah deskripsi, sedangkan instrumen yang digunakan untuk melihat respon siswa adalah angket tertutup dengan menggunakan skala Likert. Hasil penelitian menunjukkan respon siswa terhadap pemanfaatan LKS dalam membantu proses pembelajaran menunjukkan respon yang kuat sebesar 78,4% dengan rata-rata nilai pengerjaan LKS sebesar 82,78.Kata kunci: kompos, lingkungan, LKS, pelestarian
MENGEMBANGKAN KEMAMPUAN REPRESENTASI MATEMATIS SISWA SEKOLAH MENENGAH PERTAMA MELALUI PEMBELAJARAN KONTEKSTUAL
Authors: Widiati Indah 
Published: September 2016

This study aimed to analyze mathematical representation ability of students obtained contextual learning compared to student who obtain expository learning, both in overall and by level of learning achievement of high, medium and low. The study design was quasi-experimental with purposive sampling. Samples were three Junior High School (SMP) in Pekanbaru with one (1) school as a representative for each level. The research instrument consisted of pretest and posttest, which contains questions to determine the ability of students' mathematical representation (visual, verbal and symbolic) on relations and functions subject. In overall, results showed that there was a difference in the ability of the mathematical representation based at the school level and between learning approach, in which the differences were significant (p = 0.003). N- gain value analysis shows that there was also difference in mathematical ability improvement after contextual learning, and difference in overall N-gain improvement was significant (p = 0.0005). It can be concluded that conceptual learning can improve students' mathematical representation. Keywords: contextual learning, expository learning, mathematical representation abilityABSTRAK Penelitian ini bertujuan untuk menganalisis kemampuan representasi matematis siswa yang memperoleh pembelajaran kontekstual dibandingkan dengan siswa yang memperoleh pembelajaran ekspositori baik secara keseluruhan maupun berdasarkan level prestasi belajar tinggi, sedang, dan rendah. Desain penelitian adalah kuasi eksperimen dengan pengambilan sampel yang bersifat purposif. Sampel penelitian adalah tiga Sekolah Menengah Pertama Negeri (SMPN) di Kota Pekanbaru dengan satu (1) sekolah sebagai wakil masing-masing level. Instrumen penelitian terdiri atas pretest dan posttest yang berisi soal-soal untuk mengetahui kemampuan representasi matematis siswa (kemampuan representasi visual, verbal, dan simbolik) pada materi relasi dan fungsi. Hasil penelitian menunjukkan bahwa terdapat perbedaan kemampuan representasi matematis berdasarkan level sekolah dan secara keseluruhan nilai rata-rata kelas ekspositori dan kelas kontekstual memiliki perbedaan yang signifikan (p = 0,003). Hasil analisis nilai N- gain menunjukkan bahwa juga terdapat perbedaan peningkatan kemampuan matematis setelah dilakukan pembelajaran kontekstual, dan secara keseluruhan perbedaan peningkatan N-gain signifikan (p = 0,0005). Dapat disimpulkan bahwa pembelajaran konseptual dapat meningkatkan kemampuan representasi matematis siswa.Kata kunci: kemampuan representasi matematis, pembelajaran kontekstual, pembelajaran ekspositori
PENERAPAN KURIKULUM 2013 PADA PEMBELAJARAN TEMATIK SAINTIFIK DENGAN MEDIA LINGKUNGAN SEKOLAH UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS SISWA
Authors: Chusni M. Minan , Mahardika Astuti , Sukmarani Dhuta 
Published: September 2016

The objective of this classroom action research was to identify impact of the implementation of curriculum 2013 on science thematic learning by using school environment media to improve students’ science process skill. Classroom action research design The design of the classroom action research applies cycle model that, consists of planning, action, observation and reflection steps. Research subjects were fourth grade students in one of elementary schools in Magelang. Data analysis technique was quantitative and qualitative descriptive data analysis. Science process skill data of the student were described in percentage and then classified in categories to describe the achievement level of each assessment aspect. Students’ science process skills in cycle I was 84.5% whereas in cycle II was 87.1%, therefore we concluded that the implementation of curriculum 2013 on scientific thematic learning by using school environment media can improve students’ science process skill, in which it increased learning quality in “Peduli terhadap Makhluk Hidup” theme and “Ayo Cintai Lingkungan” subtheme.Keywords: scientific thematic learning, school environment media, science process skill ABSTRAKTujuan penelitian ini adalah untuk mengetahui pembelajaran tematik menggunakan pendekatan saintifik dengan media lingkungan sekolah sehingga dapat meningkatkan keterampilan proses siswa. Penelitian ini menggunakan metode penelitian tindakan kelas (PTK). Rancangan penelitian tindakan kelas yang diambil yaitu model siklus, yang pada setiap siklus terdiri atas perencanaan, tindakan, observasi dan refleksi. Subyek penelitian adalah siswa kelas IV di salah satu Sekolah dasar (SD) di Magelang. Teknik analisis data yang digunakan adalah teknik analisis data deskriptif kuantitatif. Data keterampilan proses dan penguasaan konsep siswa dideskripsikan dalam persentase kemudian diklasifikasikan dalam kategori untuk mengetahui tingkatan keberhasilan setiap aspek penilaian. Hasil penelitian menunjukkan bahwa rata-rata hasil penilaian keterampilan proses sains siswa pada siklus I adalah 84,5% sedangkan pada siklus II adalah 87,1%. Dari hasil penelitian ini dapat disimpulkan bahwa Pembelajaran tematik menggunakan pendekatan saintifik dengan media lingkungan sekolah dapat meningkatkan keterampilan proses siswa, sehingga dapat meningkatkan kualitas pembelajaran khususnya pada tema Peduli terhadap Makhluk Hidup dan subtema Ayo Cintai LingkunganKata kunci: keterampilan proses sains, media lingkungan sekolah, pembelajaran tematik saintifik
PROMOTING HIGH-LEVEL MATHEMATICAL THINKING THROUGH PROBLEM-SOLVING ACTIVITIES IN INDONESIAN PRIMARY SCHOOLS
Authors: Suryadi Didi 
Published: September 2016

Paper ini memuat sebagian kecil dari hasil penelitian yang dilakukan selama tiga tahun oleh Utari, Suryadi, Rukmana, Dasari, dan Suhendra (1998-2000) yang berfokus pada upaya pengembangan kemampuan berfikir matematik tingkat tinggi siswa sekolah dasar di Jawa Barat. Tujuan utama penelitian ini antara lain mencakup: (1) mengidentifikasi jenis kemampuan berfikir matematik tingkat tinggi yang bisa dikembangkan, (2) mengembangkan model bahan ajar yang sesuai, dan (3) mengembangkan alternatif model pembelajaran yang kondusif untuk pengembangan kemampuan berfikir matematik tingkat tinggi di sekolah dasar. Key words: high level thinking, problem-solving, mathematics education
DADU SICHERMAN (SUATU APLIKASI DARI FAKTORISASI TUNGGAL PADA Z[X])
Authors: Nurlaelah Elah 
Published: September 2016

An interesting application of unique factorization in Z[X] is Sicherman dice. The dice is a pair of dice whose has different number from ordinary dice which faces are labeled 1 through 6. But probability the sum of faces are same as the sum of ordinary dices. Sicherman dice is obtained by using one to one correspondence between the two polynomials and the face of two dice of ordinary dice.Kata Kunci : ring R[X], daerah Integral, polynomial irreducible, Faktorisasi tunggal pada Z[X].
PRINSIP VARIASI VAN BAAK SEBAGAI METODE ALTERNATIF DARI TEOREMA SIMPAL KIRCHHOFF UNTUK MENYELESAIKAN PERSOALAN-PERSOALAN RANGKAIAN LISTRIK ARUS SEARAH
Authors: Tayubi Yuyu R. , Suhandi Andi , Kaniawati Ida , Noor Suhendiana 
Published: September 2016

This study compared teaching electric circuit by applying Van Baak Variation Principle and by applying Kirchhoff loop theorem in developing students’ ability to solve DC circuit problems. The study was conducted in one high school in Lembang, about eight km from Bandung to the north. Most of the students come from farmer families with social-economic class status between middle and low. Two intact classes were involved in the study. One class was taught to use van Baak’s variational principle, and the other one was taught to use Kirchhoff loop theorem to solve circuit problems. The result indicates that students performed significantly better in applying van Baak variational principle than Kirchhoff loops theorem to solve complex electric circuit problems. No difference was found in student performance for simple circuits. Keywords: Van Baak variation principle, Kirchhoff loop theorem, DC electric circuit.
PENENTUAN KADAR OKSIGEN TERLARUT MENGGUNAKAN SENSOR POLAROGRAFI BERMEMBRAN PLASTIK (Determination of dissolved oxygen with polarographic oxygen sensor plastic membrane probe)
Authors: Suhanda Hokcu 
Published: September 2016

Plastic membrane sensor for polarographic oxygen measurement has been investigated. The Probe was constructed of: Pt as a working electrode; Ag- AgCl as a reference electrode and an auxiliary electrode; solution of KCl as an electrolyte solution; plastic wrap (thickness 72.7  m) as a membrane; and polyester polymer as a body of sensor. It was found that the polarographic oxygen sensor plastic membrane probe was suited for determination of dissolved oxygen with an optimum operating characteristics at applied voltage of –0.65 V and solution KCl 30% as an electrolyte. The probe showed that reduction current achieved steady state after 75 seconds. The standard calibration curve (concentration – current) showed that the linear relationships were achieved for dissolved oxygen in the range of 1.0 – 30.6 ppm. The analytical performance characteristics of the probe were: precision 0.87% – 30.0 %; calibration sensitivity 0.17 ppm/  A; analytical sensitivity 0.56 – 0.84 ppm/  A; and detection limit 0.8 ppm. The t- test and F-test at 95% confidence level showed that there was no significant difference between the determinations of dissolved oxygen by polarographic oxygen sensor membrane plastic and by Winkler method. Key words: membrane plastic, polarographic, steady state, Winkler method.
PEMBELAJARAN BIOLOGI KONSEP SISTEM PENCERNAAN MAKANAN DALAM KEGIATAN LESSON STUDY DI SMP NEGERI 1 PASEH
Authors: Rustini Intang , Eka Dyah , Sukarsih Engka , Sulastri Yeti , Trisnayanti Leni , Merliana Nina , Sriyani Ms , Kasmanah Ms , Mariam Iyam , Siswandi Ade , Maryana Tata , Sudiman Maman , Patran Encang , Dahria Totoy , Rochintaniawati Diana , Hamdiyati Yanti 
Published: September 2016

Kegiatan lesson study di SMP Negeri 1 Paseh dilaksanakan pada tahun pelajaran 2006/2007. Kegiatan ini diikuti oleh kalangan guru IPA Kabupaten Sumedang beserta team ahli dari dosen FPMIPA-UPI. Kegiatan dilaksanakan dalam tiga tahap: perencanaan, implementasi, dan refleksi. Implementasi kegiatan dilaksanakan pada hari Sabtu, 2 Desember 2006. Untuk bidang studi biologi, konsep yang diambil adalah Sistem Pencernaan Makanan pada sub konsep Uji Kandungan Bahan Makanan. Metode yang digunakan adalah metode eksperimen. Implementasi kegiatan ini dilaksanakan pada kelas VIII-F dengan jumlah siswa 38 orang, yang dibagi ke dalam 6 kelompok. Secara umum kegiatan lesson study ini membawa pengaruh yang cukup besar dalam upaya peningkatan profesionalisme guru dalam merancang, melaksanakan, dan mengevaluasi pembelajaran. Kegiatan ini hendaknya tidak hanya dilakukan pada saat ada pembimbing dari UPI, melainkan diimplementasikan dalam kegiatan belajar sehari-hari untuk setiap sekolah, baik untuk satu bidang studi saja ataupun antar bidang studi.
Education and Entrepreneurship: Best Learning from Helm Project at Cenderawasih University
Authors: Goldstein Beth L. 
Published: September 2016

<p>In 2013, as part of the Higher Education Leadership and Management national initiative sponsored by US AID, Universitas Cenderawasih proposed an action research project to address the under-employment of UNCEN graduates through purposeful entrepreneurship education. Although entrepreneurship education had been introduced previously at UNCEN, it had never been custom designed to integrate theory and practice appropriate to Papua as part of the formal curriculum. This paper focuses on the use of core principles of the action research process (ARP) to develop and implement a locally effective curriculum for students enrolled in UNCEN’s Faculty of Economics. A central value underlying the project was the development of a curriculum that could address social inequalities in Papua, specifically the significant under-representation of Papuan native peoples in the entrepreneurship sector.Through a mixed methods approach that used demographic, attitudinal and outcome data as well as observational, interview and focus group data, the ARP team designed an experientially-based learning module, documented implementation of thepilot learning module, evaluated its effectiveness, and developed proposals for improvement and institutionalization. As a result of its action research project, the ARP team suggests that future iterations of the entrepreneurship curriculum at UNCEN should adopt a culturally responsive pedagogy (Gay, 2010; Ladson-Billings, 1995) that addresses the disparities in cultural and social capital shown to be significant in the ARP to entrepreneurship education.</p>
Traditional Ecological Knowledge (Tek) In Hunting: From Culture To Nature
Authors: Pattiselanno Freddy 
Published: September 2016

<p>In Papua, the practices of Traditional Ecological Knowledge (TEK) in hunting were: limiting hunting on particular species, performing hunting using traditional hunting techniques, protecting specific land tenure from hunting and hunting on particular period of time. These practices were highly complex and highly variable across Papua – a set of unwritten and cultural law that passed on verbally from one generation to another that played important roles on nature protection </p>
English Tense Use In Indonesian Journal Articles
Authors: Ferdinandus Adelce S 
Published: September 2016

<p>This paper reports a study of English tense use in second language writing. Attempting to validate Oster’s (1981) claims on tense use as a rhetorical device in discourse, the study seeks to find out whether Indonesian writers’ use of English tense conforms or confront the previous claims. The data are drawn from twelve journal articles taken from three different Indonesian scientific journals. The use of tense is accounted and analyzed according to the rhetorical functions it plays. The results show that 89% of the present tense verbs are used differently. Contrary to Oster’s claim, this study proves that present tense is also used for generalization. This study also indicates that simple present tense is used more frequently within non-integral citations than the use of simple past tense and present perfect tense in reporting past literature. This paper argues that professional writers are more likely to employ non-integral citations to promote their own ideas to the readers. This is shown by the prominent use of non-integral citations and their combination with the present tense.</p>
Does Heat Stress Affect Immune Function in Dairy Cows?
Authors: Steele Mike 
Published: September 2016

Clinical bottom line
Heat stress appears to generally suppress innate immune function in both dry and lactating dairy cows. Immune effects that are decreased include cytokine production, proliferation of immune cells, migration of lymphocytes to the udder and cell viability. This may lead to an increase in the risk of clinical diseases such as mastitis and metritis.
A Numerical Study of Thermal-Hydraulic-Mechanical Simulation With Application of Thermal Recovery in Fractured Shale-Gas Reservoirs
Authors: Wang HanYi 
Published: September 2016

Summary
Shale gas is playing an important role in transforming global energy markets with increasing demands for cleaner energy in the future. One major difference in shale-gas reservoirs is that a considerable amount of gas is adsorbed. Up to 85% of the total gas within shale may be found adsorbed on clay and kerogen. How much of the adsorbed gas can be produced has a significant effect on ultimate recovery. Even with improving fracturing and horizontal-well technologies, the average gas-recovery factors in US shale plays are only approximately 30% with primary depletion. Adsorbed gas can be desorbed by lowering pressure and raising temperature and reservoir-flow capacity can be also influenced by temperature, so there is a big prize to be claimed by use of thermal-stimulation techniques to enhance recovery. To date, not much work has been done on thermal stimulation of shale-gas reservoirs.
In this study, we present general formulations to simulate gas production in fractured shale-gas reservoirs for the first time, with fully coupled thermal-hydraulic-mechanical (THM) properties. The unified-shale-gas-reservoir model developed in this study enables us to investigate multiphysics phenomena in shale-gas formations. Thermal stimulation of fractured gas reservoirs by heating propped fractures is proposed and investigated. This study provides some fundamental insight into real-gas flow in nanopore space and gas-adsorption/desorption behavior in fractured gas shales under various in-situ conditions, and sets a foundation for future research efforts in the area of enhanced recovery of shale-gas reservoirs.
We find that thermal stimulation of shale-gas reservoirs has the potential to enhance recovery significantly by enhancing the overall flow capacity and releasing adsorbed gas that cannot be recovered by primary depletion. However, the process may be hampered by the low heat transfer rate if only the surfaces of hydraulic fractures are heated.