bluuebunny/crossref_metadata_2025 huggingface dataset:
Wind loading on catenary vault structures
Authors: Bradley R , Gohnert M , Goliger A , Mistry Y
Published: January 2017

Catenary vault structures are increasingly being utilised as an efficient alternative to the traditional circular vault. However, little is known regarding wind loading effects, in particular the pressure distribution, over these forms. Consequently, applicability of the data given for circular vaults used for the design of catenary vaults is also uncertain. In this paper the results of a wind-tunnel investigation and their implications on the design of catenary vaults are discussed. A series of tests were undertaken to assess the effects of variation in vault geometry and wind orientation on surface pressures measured over these structures. These parameters are evaluated to clarify their influence on the loading on catenary vaults. Only the results relating to mean and root-mean-square pressure coefficients are reported, in line with wind loading standardisation practice (if localised pressures are relevant, the designer is referred to expert advice or an adoption of the data from similar geometrical forms). The primary focus of the investigation is to examine the applicability of the design data given in SANS 10160-3:2011 (SANS 2011b) (referring to circular and duo-pitched roofs) to catenary structures. Subsequently, the merit of developing a set of exclusive design coefficients relating to catenary vaults is considered.
The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis
Authors: Kaur A , Fanourakis G
Published: January 2017

Knowledge of the physical properties of soils, including the clay content, is of utmost importance in the field of geotechnical engineering. The hydrometer analysis is the most widely used technique for the analysis of the particle size distribution of the fine-grained fraction of a soil, calculated using sedimentation principles. The hydrometer analysis utilises a dispersing agent - Calgon 33:7 (comprising 33 grams of sodium hexametaphosphate and 7 grams of sodium carbonate when mixed in 1 litre of water) is universally considered as the most effective dispersing agent. In this investigation, hydrometer analyses were conducted (according to the TMH1 1986 method) on two soils (alluvium and black clay), using five dispersing agents. The results show that the clay size fraction can vary significantly (from 1% to 32%) for the two soils, depending upon the dispersing agent used. From these initial results, the two most effective dispersing agents (Calgon and sodium pyrophosphate decahydrate - NaPP) were investigated further to establish the optimum concentration and volume. Calgon proved to be the most effective in the alluvial soil, increasing the clay content by 38%. The NaPP was most effective in the relatively active black soil, increasing the clay content by 25%.
Ossiculoplasty: study of hearing results in 50 patients
Authors: Chavan Reshma P. , Ingole Shivraj M. , Birajdar Santosh Na.
Published: January 2017

Background: Ossiculoplasty improves conductive hearing loss. Various reconstruction methods and techniques are developed with use of different graft materials over period of time. Results of ossiculoplasty can be predetermined with consideration of prognostic factors.

Methods: The present study is retrospective study of 50 patients who underwent ossiculoplasty in the medical college hospital over the period of 3 years i.e. from January 2013 to December 2016. The pre-operative and post-operative audiometric findings were documented and analyzed to study the hearing improvement with the use of auto graft malleus and incus for ossiculoplasty. The results of ossiculoplasty were also compared with other studies done for ossiculoplasty. Predictors of ossiculoplasty results such as ossicular status and middle ear mucosa were also studied.  

Results: The average post-operative air bone gap was 12.92 dB. The mean post-operative ABG was within 20 dB in both primary and revision cases. Average air-bone closure in patients with normal mucosa was 32.1 dB and that of adhesive mucosa was 18 dB. Significant improvement in post-operative air-bone closure (p <0.01) was observed in patients with auto graft incus than malleus head as ossiculoplast.

Conclusions: 84% ossiculopasty patients were having post-operative air bone gap within 20 dB. The ossiculoplasty using auto graft ossicle is physiological, biocompatible, stable and has low complication rate.
Oportunidade de aprendizagem de conteúdo em Matemática no PISA 2012
Authors: Bacchetto João Galvão , Pinto Junior Wallace Nascimento
Published: January 2017

O Programa Internacional de Avaliação de Estudantes (PISA) 2012 avaliou, por meio do questionário do estudante, a Oportunidade de Aprendizagem de Conteúdo, definida como a exposição dos estudantes ao conteúdo de uma determinada área do conhecimento na escola – nesse caso, especificamente a área de Matemática. Com base nos resultados dos questionários, foram gerados três índices que, neste artigo, foram relacionados com o desempenho dos estudantes de um grupo de países no teste cognitivo de Matemática. O estudo sugere que há uma relação entre dois desses índices e as médias do teste de Matemática, sendo essa relação fraca para o terceiro índice. Esses resultados podem iluminar aspectos nem sempre conhecidos sobre a exposição a tarefas e conceitos matemáticos em sala de aula.

Palavras-chave: PISA; Oportunidade de Aprendizagem de Conteúdo; Questionário; Matemática.

 

Oportunidad de aprendizaje de contenido en Matemáticas en el PISA 2012

El Programa Internacional de Evaluación de Estudiantes (PISA) 2012 evaluó, por medio del cuestionario del estudiante, la Oportunidad de Aprendizaje de Contenido, definida como la exposición de los estudiantes al contenido de una determinada área del conocimiento en la escuela –en dicho caso específico, el área de Matemáticas. En base a los resultados de los cuestionarios se generaron tres índices que, en este artículo, se relacionaron con el desempeño de los estudiantes de un grupo de países en la prueba cognitiva de Matemáticas. El estudio sugiere que hay una relación entre dos de estos índices y los promedios de la prueba de Matemáticas, pero tal relación es muy baja en lo que concierne al tercer índice. Dichos resultados pueden iluminar aspectos no siempre conocidos sobre la exposición a tareas y conceptos matemáticos en el aula.

Palabras-clave: PISA; Oportunidad de aprendizaje de Contenido; Cuestionario; Matemáticas.

 

Opportunity to learn the content of Mathematics in PISA 2012

The Programme for International Student Assessment] (PISA) 2012 used student-level questionnaires to evaluate the Opportunity to Learn Content defined as students’ exposure to subject content in school – in this case, specifically in the area of Mathematics. Based on the results of the questionnaires, three indexes related to students’ performance in a group of countries were generated. The study suggests that there is a relationship between two of the indexes and the mean scores in the Mathematics test, but this relationship is weak for the third index. These results can elucidate aspects about exposure to mathematical tasks and concepts in the classroom which are not always well known.

Keywords: PISA; Opportunity to Learn Content; Questionnaire; Mathematics.
Development of Enhanced Reduced Representation Bisulfite Sequencing Method for Single-cell Methylome Analysis
Authors: Yamane Junko , Mori Tomoya , Taniyama Nobuko , Kobayashi Kenta , Fujibuchi Wataru
Published: January 2017

Single-cell analysis provides molecular signatures to define cell identity. To characterize cell types, DNA methylation patterns are often used as a flag of internal molecular status. There are a few reports of single-cell methylome techniques that involves bisulfite conversion. However, the step often causes DNA fragmentation, which leads to severe PCR substrate reduction. Here we developed a new version of single-cell reduced representation bisulfite sequencing (scRRBS) method to recover more CpG sites to be analysed. Our method succeeded to increase of 4.1 times in sample yield and 1.6 times in CpG site coverage. Importantly, our results indicate that the obtained single-cell DNA methylation sites are homogeneous among 12 cells, thus it may provide molecular barcodes for cell types. In summary, we succeed to develop enhanced scRRBS method and it will be more useful tool to define cell identity in the near future.
O Professor de Biologia enquanto Educador Ambiental: Delineando o Perfil de um Caso Particular de Sujeito Ecológico
Authors: Campos Daniela Bertolucci , Cavalari Rosa Maria Feiteiro
Published: January 2017

Este artigo se constitui como recorte de nossos estudos empreendidos em dissertação de mestrado, buscando delinear o perfil do professor de Biologia enquanto potencial educador ambiental, um caso particular de “sujeito ecológico”. Desenvolvemos uma pesquisa qualitativa envolvendo docentes do ensino público, no intuito de explorar seu relacionamento pessoal e profissional com a temática ambiental e os fatores que determinaram a sua identificação com a mesma, buscando uma possível aproximação com os ideais que constituem o “sujeito ecológico”. Para a coleta dos dados realizamos entrevistas semi-estruturadas, complementadas por análise documental, precedidas por um questionário exploratório. Os dados obtidos demonstraram uma estreita relação entre o grau de aproximação do professor de Biologia em relação às características que compõem o “sujeito ecológico” e o trabalho docente em relação à temática ambiental, além de apontar possibilidades para a formação dos professores enquanto educadores ambientais.
KEDUDUKAN ADVOKAT DALAM PASAL 5 UNDANGUNDANG NOMOR 18 TAHUN 2003 TENTANG ADVOKAT PERSPEKTIF HUKUM
Authors: Umam Adib Khoirul
Published: January 2017

This study aims to determine how Islam views which in this case is limited only four schools of opinion about the position of an advocate as law enforcement. In Islam indeed advocates known as providers of legal bantuah namely Hakam, mufti and mashalih alaih that functions similar to advokat.Penelitian function is called normative research with descriptive methods comparative analysis between positive law and Islamic law, namely Law No. 18 2003 and scholarly opinion four schools as primary data. Secondary data were taken from books or books that explain the legal theory of primary data. Article 5 of Law No. 18 of 2003 on lawyers has been explained that the position of advocate parallel with other law enforcement such as judges, prosecutors and police. But in fact appear black advocates not to enforce the law but instead became mafias that sell traded equity law. For it will be studied how exactly Islam's view of the position of Advocates with the formulation of the problem sebegai follows, first how the views of Islamic law for the position of advocate in Article 5 of Law No. 18 of 2003 on advocates, who both like where the relevance of Islam's view of the position of advocate in enforcement law in Indonesia. From research conducted authors argue for their refisi against the law number 18 of 2003 on advocates. alignment between advocates and other law enforcement must be followed by the high quality of an advocate and supervision of the performance of lawyers in order to minimize the occurrence of fraud in practice in providing legal aid.

Penelitian ini bertujuan untuk mengetahui bagaimana pandangan Islam yang dalam hal ini hanya dibatasi pendapat empat madzhab tentang kedudukan advokat sebagai penegak hukum. Dalam Islam memang advokat dikenal sebagai lembaga pemberi bantuah hukum yaitu hakam, mufti dan mashalih alaih yang secara fungsi hampir sama dengan fungsi advokat. Penelitian ini disebut penelitian normatif dengan metode deskriptif analisis perbandingan antara hukum positif dan hukum Islam, yaitu undang-undang nomor 18 tahun 2003 dan pendapat ulama empat madzhab sebagai data primer. Data sekunder diambil dari kitab-kitab atau buku-buku teori hukum yang menjelaskan tentang data primer. Dari penelitian yang dilakukan penulis berpendapat perlunya adanya refisi terhadap undang-undang nomor 18 tahun 2003 tentang advokat. kesejajaran antara advokat dan penegak hukum lainya harus diikuti dengan tingginya kualitas seorang advokat dan pengawasan terhadap kinerja advokat agar bisa meminimalisir terjadinya penyelewengan dalam praktiknya dalam memberi bantuan hukum.
Resolution of Peripheral Obstructive Sleep Apnea After Mandibular Torectomy
Authors: McLeod Dwight E. , Dolgov Sergey B. , Bitter Robert N. , Garcia M. Nathalia , Binz Elizabeth D. , Omran Mohamed T.
Published: January 2017

Introduction: Large bilateral mandibular tori are excessive growths of bone that may hinder routine oral hygiene, normal movement of the tongue, mastication, and prosthetic dentistry procedures. Oral tissues that interfere with the passage of air in the oropharyngeal area can contribute to peripheral obstructive sleep apnea (OSA). This case report describes the resolution of a case of peripheral OSA after successful bilateral mandibular tori reduction surgery (torectomy).

Case Presentation: A 57‐year‐old white male with a history of diagnosed mild OSA presented for bilateral mandibular tori reduction surgery. The tori were surgically eliminated, and the patient healed with no remarkable complications. After surgery, the patient realized that his tongue movement was no longer restricted and his OSA was improved. Resolution of his peripheral OSA was confirmed with a physician‐supervised sleep study test.

Conclusions: Peripheral OSA influenced by mandibular tori may be improved with torectomy surgery. Patients undergoing sleep study tests should receive a complete oral examination to rule out contributing oral peripheral factors. Interprofessional collaboration with medical and oral healthcare providers can result in better management of some patients with OSA, thus reducing the need for continuous positive airway pressure ventilation.
Valuasi Ekonomi Hutan Mangrove di Pulau Untung Jawa Kepulauan Seribu : Studi Konservasi Berbasis Green Economy
Authors: Prasetiyo Dandy E , Zulfikar Firman , Shinta Shinta
Published: January 2017

Promoting forest as one of green economy asset in Indonesia become an important agenda in the process of development. Forests have an important role as a source of foreign exchange and also as a form of natural resource wealth. The era of globalization with the accelerated economic growth increases the need for both, the fields of agriculture, infrastructure, land requirements and other sectors. Increased human needs are giving a positive correlation to the increased pressure on forests. Mangrove forests as one of the most productive ecosystems in the world are also experiencing the same threat. The expansion of settlements and ponds in coastal areas lead to degradation of mangrove forests is very high. The economic value of mangrove forests of diverse functions such as shoreline protection, habitat for aquatic organisms, carbon storage, and a variety of other functions has not been a lot of concern to the public and policy makers. This study aimed to quantify the economic value of mangrove forests in Untung Jawa Island, Thousand Islands as an effort to support the government's program to realize the green economy in the forestry sector. Method of economic calculation mangrove forests in this research is to calculate the Total Economic Value / Total Economic Valuation (TEV), which consists of direct use values (Direct Use Value) and indirect use values (Indirect Use Value). The results showed that the direct use value of mangrove forests in Untung Jawa Island is Rp. 395,126,912 which includes the value of timber, fruit value, and the value of the fishery, while the indirect use value is Rp. 7,500,600,000 calculated from the value of coastal protection, the value of foraging, conservation value, educational value, and recreational value. The total economic value (total economic value) of mangrove forests in Untung Jawa Island reached Rp. 7,895,726,912Keywords : mangrove, green economy, total economic valuation
Kajian Aspek Populasi Menggunakan Model Pertumbuhan Allometri Spesies Kerang Kapah di Pantai Binalatung Kota Tarakan
Authors: Firman Firman , Salim Gazali
Published: January 2017

The research goal was to compare the shells types of Kapah (Meretrix meretrix; M. lyrata; Geloniacoaxans) that found in the Coast Binalatung area, Tarakan and to assess the growth of shellfishallometri. Sampling is done by making a transect along the coast Binalatung as much as 12 transects.Each transect arranged lengthwise along the beach with 25 meters of each transect. Sampling wascarried out in the absence of repetition with an area of 25 x 25 meters transect. Sampling was done byusing tools such as Kapah’ rakes. The result showed the M. meretrix constistes of 63 % of Kapah’spopulation while M. lyrata and G. coaxans represent 27 % and 10 % respectively. Growth comparisonbetween shell length and weight was considered as positive allometri while comparison between thickshells and weight of shellfish Kapah was allometri negative.Keywords: shellfish kapah, allometri growth, Binalatung, Tarakan
The Most Important Reason to Educate Students with Knowledge to Measure Refractive Index: Evaluated From The Impact On Judd-Ofelt Analysis of Tellurite Based Glass
Authors: Pramuda Adi , Marzuki Ahmad , Cari C , Hadiati Soka
Published: January 2017

This study presents an overview influence of the refractive index parameter to the parameter and radiative properties of analyticaly results on Judd Ofelt tellurite based glass, in the hope of clarifying the importance of education with good refractive index measurement. The main stages carried out is the matching between the result of the parameters and the radiative properties of analytical results on Judd Ofelt tellurite glass with composition 55TeO2-2Bi2O3-(40-x) ZnO-3NA2O-xNd2O3 (x = 2.5) from a value the refractive index is estimated by the value of the refractive index obtained by measurement using Brewster angle method. The results showed that the difference in the Brewster angle ranging from 2o course, will change the value of laser parameters and radiative properties Judd-Ofelt analytical results, with the exception of the Branching Ratio value. Still very much needed insight for learners to use this method. This is an example of a case where educators need to create activities that will facilitate learning well to push the conceptual change. Experiment with new variation of activities will encourage a conceptual change and the ability to analogize concept.

Keywords: Refractive Index, Judd-Ofelt, Tellurite, Glass
Simbol Kesehatan Adab Belajar Ilmu Fisika
Authors: Wardana Muhammad Ardian Yuli Ali
Published: January 2017

Penulisan Makalah Seminar Fisika ini bertujuan untuk : (1) Menjelaskan bagaimana adab belajar ilmu fisika; (2) Menjelaskan bagaimana simbol kesehatan adalah bentuk aplikasi ilmu fisika dari langit yaitu Tuhan menuju  bumi yaitu manusia dan (3) Menjelaskan bagaimana hidup sehat dengan ilmu fisika. Makalah ini disusun berdasarkan kajian literatur seperti Quran, buku, jurnal, internet, dan literatur lainnya yang membahas tentang pentingnya adab belajar ilmu fisika. Berdasarkan hasil pembahasan, dapat diperoleh kesimpulan sebagai berikut: (1) Keseimbangan atau kesehatan adalah sebuah titik dimana semua benda berada pada keteraturan . Prinsip dasar keseimbangan atau kesehatan adalah keadaan seimbang antara hubungan manusia dengan Tuhan dan hubungan manusia dengan manusia yang lain. Jika tubuh manusia diilustrasikan sebagai suatu bola, maka titik kesetimbangan atau poros kesehatan ada di pusat bola atau bisa difokuskan di dalam perut manusia. Artinya jika tubuh manusia memiliki keinginan untuk sehat maka harus diperhatikan titik tersebut. Dan jika ingin sembuh maka sembuhkan dulu titik pusat kesetimbangan tersebut. Maka, adab dalam belajar ilmu fisika adalah dengan memahami konsep ibadah kepada Tuhan dan konsep hubungan sosial dengan manusia lainnya. (2) Bentuk aplikasi ilmu fisika, mulai dari makroskopis dan mikroskopis ternyata adalah bentuk simbol positif yang saling terhubung. Maka dari itu manusia harus mampu belajar atau mengambil hikmah dari sebuah ayat Quran surat Ar Rahmaan ayat 19 tentang sebuah adab keseimbangan. (3) Manusia bisa belajar dari pola hidup sehatnya manusia-manusia mulia zaman dulu yaitu ilmuwan muslim abad 7 sampai 16 Masehi yang telah suskes menggali sumber segala ilmu pengetahuan. Dan ternyata benar, bahwa manusia-manusia mulia ini adalah manusia yang sempurna, mampu mengaplikasikan segala jenis ilmu sains fisika ataupun sosial. Jadi, hidup sehat itu mudah dan simple, caranya adalah manusia harus mampu mengaplikasikan ilmu fisika di dalam kehidupan sehari-harinya. Mulai dari ilmu makroskopis dan mikroskopis.

 

Kata kunci : Tuham, manusia, fisika, adab, simbol kesehatan
Pengaruh Suhu Pemanasan Terhadap Tortuositas dan Faktor Sementasi Sinter Silika Mata Air Panas
Authors: Putra Ardian , Putri Tania Dian , Salim Afdal Fajri , Rhomar Zeflianto
Published: January 2017

Sinter silika merupakan salah satu deposit yang sering muncul di daerah geotermal dan ditemukan di mata air panas yang bersifat klorida. Pada penelitian ini, sinter silika yang diambil dari Mata Air Panas Sapan Maluluang, Kecamatan Pauah Duo, Kabupaten Solok Selatan, Sumatera Barat yang diberi perlakuan pemanasan pada suhu 175, 200, 225, 250, 275 dan 300 °C. Pada masing-masing sampel dilakukan pengukuran dan perhitungan porositas dan resistivitas listrik. Sampel dengan pemanasan yang lebih tinggi menyebabkan terjadinya peningkatan porositas. Pada masing-masing suhu pemanasan, dibuat hubungan antara faktor resistivitas (FR) terhadap porositas (ø) menggunakan hubungan empiris FR = a ø-m, dengan a  merupakan faktor tortuositas dan m merupakan sementasi. Pada sampel dengan pemanasan pada suhu 175, 200 dan 225 °C menghasilkan hubungan yang lebih baik dibandingkan suhu yang lebih tinggi. Tortuisitas mengalami kenaikan seiring dengan kenaikan suhu pemanasan sinter silika dari 0,4689 pada 31 °C menjadi 15,425 pada 225 °C, sedangkan terjadi penurunan sementasi dari 1,925 pada 31 °C menjadi 1,513 pada 225 °C. Padaa suhu pemanasan yang lebih tinggi, persamaan ini tidak menghasilkan hubungan yang lebih baik.

 

Kata kunci: sinter silika, mata air panas, porositas, tortuositas, sementasi
Pengaruh Model Pembelajaran Tipe Talking Stick untuk Meningkatkan Hasil Belajar Fisika Siswa SMA Negeri 1 Jiwan Tahun Ajaran 2015/2016
Authors: Fatimah Dewi , Huriawati Farida , Handhika Jeffry
Published: January 2017

Penelitian ini bertujuan untuk meningkatkan hasil belajar fisika melalui penerapan pembelajaran kooperatif tipe Talking Stick. Penelitian Tindakan Kelas yang dilaksanakan pada siswa kelas XI IPA 1 SMAN 1 Jiwan tahun ajaran 2015/2016 dengan jumlah siswa sebanyak 20 siswa.Penelitian dilakukan selama 2 bulan yaitu dari bulan April sampai dengan bulan Mei 2016. Pengambilan data dalam penelitian ini dilakukan dengan menggunakan teknik observasi untuk analisis data kualitatif, serta tes penilaian kognitif siswa sebagai analisis data kuantitatif. Berdasarkan hasil tes pada siklus I dan siklus II terjadi peningkatan yaitu nilai rata–rata kelas tes siklus I adalah 61,25  meningkat menjadi 77,80 pada tes siklus II. Hasil penelitian ini menunjukkan bahwa melalui pembelajaran kooperatif tipe Talking Stickterbukti dapat meningkatkan hasil belajar fisika siswa kelas XI IPA 1 SMAN 1 Jiwan.

Kata Kunci: Hasil  Belajar, Fisika dan Talking Stick.
Penerapan Media Praktikum Gerak Harmonik Sederhana Menggunakan Osilator Digital Detector untuk Meningkatkan Hasil Belajar dan Keterampilan Proses Mahasiswa
Authors: Huriawati Farida , Handhika Jeffry , Luthfiaturrohmah Luthfiaturrohmah
Published: January 2017

Penelitian ini bertujuan untuk meningkatkan hasil belajar dan ketrampilan proses melalui penerapan media praktikum gerak harmonik sederhana menggunakan osilator digital detector pada praktikum Fisika Dasar 1. Penelitian Tindakan Kelas yang dilaksanakan pada mahasiswa semester 1Prodi Pendidikan Fisika IKIP PGRI  Madiun tahun ajaran 2015/2016 dengan jumlah siswa sebanyak 24 mahasiswa. Penelitian dilakukan selama 2 bulan yaitu dari bulan April sampai dengan bulan Mei 2016. Pengambilan data dalam  penelitian ini dilakukan dengan menggunakan teknik observasi dengan lembar check list untuk analisis data kualitatif dan tes penilaian kognitif mahasiswa sebagai analisis data kuantitatif. Hasil penelitian yang diperoleh dari siklus I mahasiswa yang mendapat nilai 41 - 60 sebanyak 10 mahasiswa atau  41,67%, nilai 61 – 80 sebanyak 10 mahasiswa atau 41,67% dan mahasiswa yang  mendapat nilai 81 -100 sebanyak 4 mahasiswa atau 16,66%. Pada siklus II mahasiswa yang memperoleh nilai 61 – 80 sebanyak 19 mahasiswa atau 79,67%, sedangkan mahasiswa yang memperoleh nilai 81 – 100 sebanyak 5 mahasiswa atau 20,83%. Berdasarkan hasil tes pada siklus I dan siklus II terjadi peningkatan yaitu nilai rata–rata kelas tes siklus I adalah 74,04 meningkat menjadi 83,30 pada tes siklus II. Untuk ketrampilan proses mahasiswa pada siklus I cukup baik dan meningkat menjadi baik pada siklus II. Hasil penelitian ini menunjukkan bahwa melalui penerapan media praktikum gerak harmonik sederhana menggunakan osilator digital detector pada praktikum Fisika Dasar 1dapat meningkatkan hasil belajar dan ketrampilan proses mahasiswa.

 

Kata kunci : Media Praktikum, Gerak Harmonik Sederhana, Hasil Belajar, Keterampilan Proses.
Pengembangan Modul Pembelajaran Fisika Berbasis Saintifik untuk Siswa SMA/MA
Authors: Darmawan Iman , Aminah Nonoh Siti , Sukarmin Sukarmin
Published: January 2017

Penelitian ini bertujuan untuk: (1) mengembangkan modul fisika berbasis saintifik untuk meningkatkan keterampilan berpikir kritis siswa, (2) mengetahui kelayakan modul pembelajaran fisika berbasis saintifik, Metode Penelitian ini adalah Reseach and Development. Model pengembangan modul yang digunakan adalah model 4-D (four D model) terdiri dari  Define, Design, Develop dan Disseminate yang dikemukakan oleh Thiagarajan. Modul dinilai berdasarkan kelayakan materi, media, dan bahasa, serta uji coba (terbatas dan luas) kepada siswa, dan tahap penyebaran pada forum MGMP. Pengumpulan data menggunakan angket analisis kebutuhan, lembar validasi modul, angket respon uji coba (terbatas dan luas), angket respon dessimnate dan tes berpikir kritis. Modul pembelajaran berbasis saintifik memiliki tahapan mengamati, menanya, mencoba, menalar dan mengkomunikasikan. Hasil penelitian sebagai berikut: (1) modul fisika berbasis saintifik untuk meningkatkan keterampilan berpikir kritis siswa memiliki ciri yaitu langkah pembelajaran pada modul disesuaikan dengan langkah pembelajaran berbasis saintifik dalam setiap tahapnya dan  memuat soal tes berpikir kritis (2) modul dikategorikan layak dengan hasil perhitungan (ahli materi, ahli media, ahli bahasa, guru, teman sejawat) yang menunjukkan nilai rata-rata 85 >Cut Off  84. Serta didukung dengan respon positif dari siswa dan hasil disseminate yang dilakukan pada forum MGMP yang mengkategorikan modul sangat baik, (Berdasarkan hasil penelitian menunjukkan bahwa modul fisika berbasis saintifik dapat meningkatkan keterampilan berpikir kritis siswa.

Kata kunci: Modul Fisika, Saintifik, Keterampilan Berpikir Kritis.

 
Pengaruh Kemampuan Awal terhadap Pemahaman Konsep Usaha dan Energi
Authors: Purwati Siwi
Published: January 2017

Pembelajaran yang berorentasi pada kemampuan awal akan menghasilkan perolehan pembelajaran yang memadai. Siswa dengan kemampuan awal yang berbeda diberi pembelajaran yang sama maka konsep yang diperoleh siswa akan berbeda sesuai dengan tingkat kemampuan awalnya. Kunci keberhasilan pembelajaran terlihat dari pemahaman konsep yang diperoleh siswa karena pemahaman konsep merujuk pada penjelasan tentang suatu konsep yang lebih bermakna. Sehingga kemampuan awal yang baik akan mendukung pemahaman konsep siswa yang baik. Tujuan penelitian ini adalah untuk mengetahui pengaruh kemampuan awal terhadap pemahaman konsep siswa pada materi usaha dan energi. Sampel penelitian merupakan siswa kelas XII yang berjumlah 112 orang. Tes pemahaman konsep diberikan pada siswa setelah mereka menempuh pembelajaran usaha dan energi. Analisis data dilakukan dengan teknik regresi. Hasil analisis data menunjukkan bahwa nilai rata-rata tes kemampuan awal dan pemahaman konsep siswa pada materi usaha dan energi berturut-turut adalah 59,55 dan 60,94, koesien korelasi sebesar 0,658, koefisien determinasi 0,433 dan nilai t hitung sebesar 9,160 dengan nilai signifikansi 0,000 < 0,005. Berdasarkan analisis data maka dapat disimpulkan bahwa kemampuan awal dan pemahaman konsep siswa pada materi usaha dan energi mempunyai hubungan yang bersifat sedang dengan arah positif sehingga naiknya kemampuan awal siswa akan diikuti naiknya pemahaman konsep siswa dan sebaliknya. Kemampuan awal berkontribusi sebesar 43,3% terhadap pemahaman konsep siswa pada materi usaha dan energi, sedangkan 56,7% dipengaruhi faktor-faktor selain kemampuan awal. Kemampuan awal berpengaruh secara signifikan terhadap pemahaman konsep siswa pada materi usaha dan energi.

 

Kata kunci kemampuan awal, pemahaman konsep, usaha dan energi
Studi Perpindahan Panas Material pada Sistem Koordinat Segitiga
Authors: Basuki Imam , Cari C , Suparmi A
Published: January 2017

Abstract: Partial Differential Equations (PDP) Laplace equation can be applied to the heat conduction. Heat conduction is a process that if two materials or two-part temperature material is contacted with another it will pass heat transfer. Conduction of heat in a triangle shaped object has a mathematical model in Cartesian coordinates. However, to facilitate the calculation, the mathematical model of heat conduction is transformed into the coordinates of the triangle. PDP numerical solution of Laplace solved using the finite difference method. Simulations performed on a triangle with some angle values α and β

 

Keywords:  heat transfer, triangle coordinates system.

 

Abstrak Persamaan Diferensial Parsial (PDP) Laplace  dapat diaplikasikan pada persamaan konduksi panas. Konduksi panas adalah suatu proses yang jika dua materi atau dua bagian materi temperaturnya disentuhkan dengan yang lainnya maka akan terjadilah perpindahan panas. Konduksi panas pada benda berbentuk segitiga mempunyai model matematika dalam koordinat cartesius. Namun untuk memudahkan perhitungan, model matematika konduksi panas tersebut ditransformasikan ke dalam koordinat segitiga. Penyelesaian numerik dari PDP Laplace diselesaikan menggunakan metode beda hingga. Simulasi dilakukan pada segitiga dengan beberapa nilai sudut  dan  

 

Kata kunci : perpindahan panas, sistem koordinat segitiga.
Studi Komparatif Model Pembelajaran Probing-Prompting dan Student Facilitator and Explaining (SFAE) Terhadap Hasil Belajar Fisika Teknik Ditinjau dari Kreativitas Berpikir Mahasiswa Teknik Informatika, STT Dharma Iswara Madiun
Authors: Kartikawati Sulistyaning
Published: January 2017

Penelitian ini bertujuan untuk mengetahui, 1) apakah ada perbedaan pengaruh model pembelajaran probing-prompting dan model pembelajaran student facilitator and explaining (SFAE) terhadap hasil belajar fisika teknik. 2) apakah ada perbedaan pengaruh kreativitas berpikir tinggi  dan rendah terhadap hasil belajar fisika teknik. 3) apakah ada interaksi antara model pembelajaran probing-prompting dan model pembelajaran student facilitator and explaining (SFAE) dengan kreativitas berpikir  terhadap hasil belajar fisika teknik. Penelitian ini dilakukan di Program Studi Teknik Informatika STT Dharma Iswara Madiun. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan desain faktorial 2x2. Teknik pengambilan sampel dalam penelitian ini menggunakan cluster random sampling. Pada penelitian ini yang menjadi sampel adalah dua kelas yaitu kelas 2A dengan jumlah 18 mahasiswa sebagai kelas eksperimen I dan kelas 2B dengan jumlah 16 mahasiswa sebagai kelas eksperimen II. Instrumen yang digunakan dalam penelitian adalah tes kreativitas berpikir untuk mengukur kreativitas berpikir mahasiswa sedangkan hasil belajar diperoleh dari quiz dengan menggunakan soal tes kognitif. Analisis data pada penelitian ini meliputi analisis deskriptif dan analisis inferensial. Analisis deskriptif dilakukan dengan menyajikan data melalui tabel distribusi frekuensi dan histogram, sedangkan analisis inferensial digunakan untuk menguji hipotesis. Uji prasyarat analisis menggunakan metode Liliefors, untuk menguji hipotesis menggunakan uji anava dua jalan. Berdasarkan hasil penelitian dengan taraf signifikan 5%  menunjukkan bahwa: 1) tidak ada perbedaan pengaruh model Probing-Prompting dan Student Facilitator and Explaining terhadap hasil belajar fisika teknik; 2) tidak ada perbedaan pengaruh kreativitas mahasiswa tinggi dan rendah terhadap hasil belajar fisika teknik; 3) tidak ada interaksi antara model pembelajaran Probing-Prompting dan student facilitator and explaining dengan kreativitas mahasiswa terhadap hasil belajar fisika teknik.

 

Kata Kunci Probing-Prompting, Student Facilitator and Explaining (SFAE), Hasil Belajar, Kreativitas Berpikir
Penggunaan Pakan Komplit Berbasis Limbah Industri Pertanian Terhadap Produktivitas Ternak Sapi Potong di Kabupaten Boyolali
Authors: Hanifa Aqni , Sari Ayu Intan
Published: January 2017

This activity aims to increase the productivity of cattle in farms of the people through improvement of feed. This event was held in the village whole observatories, District Selo, Boyolali. Proximate analysis carried out in the laboratory feed and Nutrition, Husbandry Program, Faculty of Agriculture UNS. The material used is a member Gapoktan Sari Bumi Handayani and KTT Lembu Suro, cattle weighing 269.50 ± 31,44 kg and feed. Green feed such as rice straw and concentrate (P0, P1 and P2). The method used is 1) a discussion and interviews using a structured questionnaire, 2) technology training and extension activities preparation of cattle feed and feeding management of livestock with FGD (Focus Group Discussion), 3) Method of pilot maintenance beef cattle feedlots system for 1 month.
 The parameters measured were feed intake, Added Daily Body Weight (PBBH), Feed Conversion Ratio (FCR) as well as the cost of revenue and 4) monitoring activities. The collected data is then analyzed and presented descriptively. The results obtained activity 1) the involvement of members of the two groupstotaling 22 people (18 men and 4 women) and the majority (55%) aged 41-50 years in counseling and training activities, 2) the level of knowledge and skills of farmers before and after activity increased (the results of the pre test and post-test of 4,91 to 8,04), 3) obtained two kinds of concentrate applied to pilot the maintenance of beef cattle, 4) monitoring the pilot obtained feed consumption for P0, P1 and P2 are respectively 206,08; 282,92 and 245,52 kg. PBBH to P0, P1 and P2 are respectively 0,80; 1,23 and 0,98 kg. FCR for P0, P1 and P2 are respectively 9,16; 8,20 and 8,93. Cost of revenue for the P0, P1 and P2 respectively is Rp 485.300,00; Rp 654.880,00; Rp 403.871,00 per head per month. The conclusion drawn is concentrate feed 1 (P1) is the best feed for optimizing the productivity of cattle.

 Keywords: complete feed, beef cattle productivity, farm people, Boyolali
Analisis Peran Komunikasi Anggota Kelompok dalam Jaringan Komunikasi
Authors: Anggriyani Emilia
Published: January 2017

The aim of this study was to analyze the influence of farmers’ affection on adoption of innovation. The respondents used in this study were the members of Sido Rejo and Sido Mulyo groups in Bantul who had already obtained information about the innovation of compost. This research was conducted census through interviews of the object of research to obtain primary data. The influence of farmers’ affection on adoption of innovation was analyzed descriptively with sosiogram method. The results showed that both groups have one click with opinion leaders of each group leader. The conclusion of this study is the
 leader of the group is still the main direction in the dissemination of information in this regard as opinion leaders.

 Keywords: the role of communication, communication networks, groups.
Pengaruh Penambahan Gula Kelapa Pasta pada Ensilase Ikan Rucah Terhadap Kualitas Silase
Authors: Rimbawanto Efka Aris , Yusiati Lies Mira , Baliarti Endang , Utomo Ristianto
Published: January 2017

The objective of this research was to analyze the effect of coconut sugar paste in naturally fermented trash fish ensilage on chemical change. Grinded trash fish (Pomadasys macullatus) was mixed with coconut sugar paste (0, 15, 30 and 45%/kg fresh trash fish) without inoculation in plastic bag. Anaerobe incubation was conducted at room temperature (29°±1°C). Chemical change (pH, lactic acid, ammonia, non-protein nitrogen, peroxide value and free fatty acid) was observed during fermentation period of 0, 4, 8, 12, 20 and 24 days. The experiment which had a completely randomized design to select the best amount of coconut sugar paste and fermentation period in trash fish ensilage. Fresh trash fish and fermentation product (trash fish silage) determined by the proximate analysis (dry matter, ash, crude protein and crude fat). Result indicated that the pH decreased remained constan at 4,4 after 16-day fermentation. Lactic acid, ammonia, non-protein nitrogen, peroxide value and free fatty acid during fermentation significantly increased due to different levels of coconut sugar paste and fe rmentation period. Conclusively, coconut sugar paste at the level of 15%/kg fresh trash fish was the best combination in natural fermentation with 16-day fermentation period and the product was potential protein source (45% DM) for animal feed.

 

Key word: Trash fish, coconut sugar paste, silage, fermentation.
(β ,α)−Connectivity Index of Graphs
Authors: Basavanagoud B. , Desai Veena R. , Patil Shreekant
Published: January 2017

Let Eβ
(G) be the set of paths of length β in a graph G. For an integer β ≥ 1 and a real number α, the (β,α)-connectivity index is defined as

χ

α

β

(
G
)

=

Σ

v

1

,

v

2

⋅
⋅
⋅

v

β
+
1

∈

E

β

(
G
)

(

d

G

(

v

1

)

d

G

(

v

2

)

...

d

G

(

v

β
+
1

)

)

α

.

$$\begin{array}{}
\displaystyle
^\beta\chi_\alpha(G)=\sum \limits_{v_1v_2 \cdot \cdot \cdot v_{\beta+1}\in E_\beta(G)}(d_{G}(v_1)d_{G}(v_2)...d_{G}(v_{\beta+1}))^{\alpha}.
\end{array}$$

The (2,1)-connectivity index shows good correlation with acentric factor of an octane isomers. In this paper, we compute the (2, α)-connectivity index of certain class of graphs, present the upper and lower bounds for (2, α)-connectivity index in terms of number of vertices, number of edges and minimum vertex degree and determine the extremal graphs which achieve the bounds. Further, we compute the (2, α)-connectivity index of line graphs of subdivision graphs of 2D-lattice, nanotube and nanotorus of TUC
4
C
8[p,q], tadpole graphs, wheel graphs and ladder graphs.
IRON DYNAMICS AND ITS RELATION TO SOIL REDOX POTENTIAL AND PLANT GROWTH IN ACID SULPHATE SOIL OF SOUTH KALIMANTAN, INDONESIA
Authors: Annisa Wahida , Nursyamsi Dedy
Published: January 2017

Organic matter has a function to maintain reductive conditions and to chelate toxic elements in acid sulphate soils. The study aimed to assess the dynamics of ferrous iron (Fe2+) in acid sulphate soil and its correlation with soil redox potential (Eh) and plant growth. The experiment was arranged in two factorial randomized block design with three replications. The first factor was two types of organic matter: (1) control (without organic matter), (2) rice straw and (3) rush weed (Eleocharis dulcis). The second factor was time of decomposition of organic matter: I1 = 2 weeks, I2 = 4 weeks, I3 = 8 weeks, and I4 = 12 weeks (farmer practice). The results showed that concentration of ferrous iron in the soil ranged from 782 to 1308 mg kg-1 during the rice growing season. The highest constant rate of iron reduction (k F2+) was observed on application of rice straw and rush weed with decomposition time of 8 weeks with the k Fe2+ value of 0.016 and 0.011 per day, respectively, while the ferrous iron formation without organic matter had the k Fe2+ value of 0.077 per day. The ferric iron (Fe3+) reduction served as a function of soil Eh as indicated by the negative correlation of ferrous iron and Eh (r = -0.856*). Organic matter decreased exchangeable iron due to chelating reaction. Iron concentration in roots was negatively correlated with soil soluble iron (r = -0.62*). Application of rice straw decomposed for 8 weeks increased the height of rice plant up to 105.67 cm. The score of Fe2+ toxicity at 8 weeks after planting ranged from 2 to 3, so rice crop did not show iron toxicity symptoms. 
Keragaan Tiga Galur Lanjut Cabai Merah Pada Ekosistem Dataran Tinggi Lembang, Jawa Barat
Authors: Kusmana NFN , Kusandriani Yenni , Kirana Rinda , Lukman Liferdi
Published: January 2017

Cabai merupakan sayuran penting yang banyak digunakan masyarakat di Indonesia. Pengujian dilakukan dibawah kondisi agro ekosistem dataran tinggi di  Lembang, Kabupaten Bandung Barat. Penelitian disusun dengan menggunakan Rancangan Acak Kelompok dengan lima ulangan. Tiga galur baru cabai  merah yaitu,  1) PP 0537-7558, 2) YK-1, 3) YK-2 serta dua vartietas pembanding  Perisai dan Tanjung- 2 dijadikan sebagai perlakuan.  Setiap plot ditanami 30 tanaman per plot. Peubah yang diamati diantaranya ialah tinggi tanaman, vigor tanaman, intensitas kerusakan oleh Antracnosa dan virus kuning,  hasil panen bobot dan jumlah buah, serta panjang buah yang merupakan karakter kuantitatif. Untuk karakter kualitatif yang diamati ialah data yang diperlukan untuk penyusunan deskripsi morfologi tanaman. Hasil pengujian diketahui bahwa, peroleh bahwa, galur YK-2 menampilkan vigor tanaman yang paling bagus.  Disamping itu galur tersebut menampilkan tinggi tanaman yang tertinggi. Potensi hasil paling tinggi dihasilkan galur YK-2 (22,64 ton/ha) nyata lebih tinggi dibandingkan kedua varietas pembandingnya yaitu Perisai (14,96 ton/ha) dan Tanjung-2 (14,62 ton/ha). Disamping itu galur YK-2 memiliki panjang buah yang ideal yaitu 15,08 cm, lebih panjang dari varietas pembanding Perisai (9,06 cm). Galur-galur yang diuji dapat dideskripsikan dengan cukup lengkap. Implikasi dari kegiatan ini terpilih satu galur advanced cabai untuk pengujian lebih lanjut.
Karakterisasi Morfologi dan Anatomi Markisa F1 di Kebun Percobaan Berastagi
Authors: Hutabarat Rina Christina , Tarigan Rasiska , Barus Susilawaty , Nasution Fitriana
Published: January 2017

Ketersediaan varietas markisa unggul yang bermutu tinggi, produktif, tahan terhadap hama/penyakit dan toleran terhadap cekaman lingkungan merupakan hal penting dalam peningkatan daya saing industri hortikultura nasional. Upaya  untuk memperoleh varietas unggul dilakukan melalui hasil silangan aksesi lokal yang memiliki karakter unggul. Tujuan penelitian ini ialah mengkarakterisasi morfologi  dan anatomi markisa berkulit ungu, merah dan markisa hasil silangan. Kegiatan dilaksanakan di Kebun Percobaan Berastagi mulai Oktober 2006 sampai  Desember 2011. Hasil analisis pada karakterisasi morfologi dan anatomi markisa diperoleh kemiripan morfologi markisa ungu dan markisa merah berdasarkan habitat, bunga, liana, teresterial, akar  tunggang, batang dan arah tumbuh, sedangkan daun, bunga, buah, biji dan warna batang berbeda. Berdasarkan karakter kuantitatif markisa F1 dengan markisa ungu  memiliki derajat brix kadar gula sama yakni 16,60  Brix, sedangkan dari segi kadar juice markisa F1 yakni 73,06 ml/100g dengan  total asam 1,53%. Berdasarkan dendogram morfologi markisa menunjukkan tingkat kemiripan markisa ungu, markisa merah dan markisa F1 mencapai 81%. Markisa F1 memiliki buah besar, warna kulit ungu kemerahan, aroma rendah jambu biji.
Pengaruh Penambahan Pupuk Hayati dan PPC Terhadap Keberhasilan Pembuahan Mangga Podang di Luar Musim
Authors: Yuniastuti Sri , Purbiati Titiek
Published: January 2017

Mangga Podang merupakan salah satu komoditas buah unggulan kabupaten Kediri dengan warna buah kuning kemerahan dan rasa manis segar. Tanaman umumnya  berbuah setahun sekali dengan masa panen yang singkat (Oktober – Desember) dan ini menyebabkan ketersediaan buah melimpah dengan harga yang murah. Oleh karena itu perlu diupayakan pengaturan pembuahan di luar musim supaya memperpanjang periode panen dengan mempercepat awal musim buah dan memperlambat akhir musim buah sehingga dapat mengendalikan harga. Pengkajian dilaksanakan tahun 2012 di kabupaten Kediri dengan rancangan acak kelompok terdiri dari 6 perlakuan dan 4 ulangan. Semua tanaman diaplikasi zat pengatur tumbuh paklobutrazol pada bulan Februari, pemupukan dan pengendalian OPT sesuai rekomendasi. Manajemen yang dilakukan untuk meningkatkan keberhasilan pembuahan di luar musim adalah perlakuan kombinasi antara penambahan pupuk hayati, mikro dan ZPT dengan dua interval pemberian yaitu: (A). Kontrol, (B). Pupuk hayati (mikoriza), (C). PPC unsur mikro, aplikasi 1 minggu sekali, (D). PPC unsur mikro,  aplikasi 2 minggu sekali, (E). PPC unsur mikro+ZPT, aplikasi 1 minggu sekali, (F). PPC unsur mikro+ZPT, aplikasi 2 minggu sekali. Aplikasi paklobutrazol pada mangga Podang yang dibarengi dengan pengelolaan secara intensif (pengendalian OPT, penambahan unsur hara makro dan mikro) dapat meningkatkan hasil buah dan memperpanjang masa panen mulai bulan Agustus sampai Desember. Aplikasi PPC 1 minggu sekali dan 2 minggu sekali baik yang mengandung ZPT maupun tidak dapat meningkatkan hasil panen sebanyak 98%. Rata-rata buah yang dapat dipanen sebelum panen raya mencapai 38.2%. Harga buah tertinggi di tingkat petani Rp. 10.000,-/kg pada bulan Agustus sampai September dan terendah Rp. 4.000,-/kg pada bulan Desember.
Rhythm and Structure: Brecht’s Antigone in performance
Authors: Duarte Bruno C.
Published: January 2017

Brecht’s adaptation of Sophocles’ Antigone in 1948 was openly a political gesture that aspired to the complete rationalization of Greek Tragedy. From the beginning, Brecht made it his task to wrench ancient tragic poetry out of its “ideological haze”, and proceeded to dismantle and eliminate what he named the “element of fate”, the crucial substance of tragic myth itself. However, his encounter with Hölderlin's unorthodox translation of Antigone, the main source for his appropriation and rewriting of the play, led him to engage in a radical experiment in theatrical practice. From the isolated first performance of Antigone, a model was created – the Antigonemodell – that demanded a direct confrontation with the many obstacles brought about by the foreign structure of Greek tragedy as a whole. In turn, such difficulties brought to light the problem of rhythm in its relation to Brecht’s own ideas of how to perform ancient poetry in a modern setting, as exemplified by the originally alienating figure of the tragic chorus. More importantly, such obstacles put into question his ideas of performance in general, as well as the way they can still resonate in our own understanding of what performance is or might be in a broader sense.