bluuebunny/crossref_metadata_2025 huggingface dataset:
Algoritma Simulated Annealing untuk Menentukan Rute Kendaraan Heterogen (Studi Kasus)
Authors: Andriansyah Andriansyah , Novatama Rizky , Sentia Prima Denny
Published: October 2020

Permasalahan transportasi dalam supply chain management sangat penting untuk dikaji karena dapat menimbulkan biaya logistik yang sangat besar. Salah satu cara untuk mengurangi biaya transportasi adalah dengan penentuan rute kendaraan atau dikenal dengan istilah vehicle routing problem. Objek yang menjadi kajian merupakan perusahaan yang bergerak pada bidang distribusi produk untuk area kota Banda Aceh dan sekitarnya. Dalam proses distribusi, perusahaan ini menggunakan dua jenis kendaraan dengan kapasitas dan biaya operasional yang berbeda sehingga permasalahan menjadi heterogeneous fleet vehicle routing problem. Penentuan rute kendaraan dalam penelitian ini dilakukan dengan tiga metode, yaitu metode analitik, algoritma insertion heuristic sebagai metode heuristik, dan algoritma simulated annealing sebagai metode metaheuristik. Berdasarkan hasil yang diperoleh dari data ujicoba, algoritma simulated annealing merupakan algoritma yang paling baik dalam menyelesaikan permasalahan. Secara rata-rata, algoritma simulated annealing dapat menghasilkan kualitas solusi yang sama dengan metode analitik, namun dengan waktu komputasi yang lebih singkat. Selain itu, algoritma simulated annealing menghasilkan kualitas solusi yang lebih baik dibandingkan algoritma insertion heuristic yang dikembangkan dalam penelitian dan dapat meningkatkkan kualitas solusi sebesar 20,18% dari penelitian sebelumnya dengan waktu komputasi 19,27 detik. AbstractTransportation problems in supply chain are very important to be discussed because they can raises enormous logistic cost. Route determination of the vehicles known as vehicle routing problem is the one of ways to reduce transportation cost. The object discussed in this study is the distribution company for Banda Aceh city and its surroundings. The company uses two types of vehicle to distribute the product for customers. The differences each vehicle are vehicle capacity and operational cost. To cover these differences, the problem becomes heterogenous fleet vehicle routing problem. The study uses three methods to solve the problem. Analitycal method, insertion heuristic algorithm as heuristic method and simulated annealing algorithm as metaheuristic method are the methods used. According to the results, simulated anneling algorithm produces the better solutions than two others. On average, solutions produced by simulated annealing algorithm from dataset have same quality with analitycal method, but with faster computation. Furthermore, simulated anneling algorithm produces better quality of solutions than insertion heuristic algorithm both from this study and previous study. The solution improves 20,18% with computation time 19,27 seconds.
Model Pembelajaran Siklus Belajar 5E Untuk Meningkatkan Literasi Sains dan Kreativitas Siswa dalam Memecahkan Masalah
Authors: Juheti Juju , Nur Sofyan Hasanudin , Hindriana Anna Fitri
Published: October 2020

Permasalahan dalam penelitian ini adalah rendahnya literasi sains dan kreativitas siswa� dalam memecahkan� masalah� yang merupakan� hasil proses pembelajaran. Salah satu model pembelajaran yang berpusat pada siswa dan menekankan pada kemampuan� siswa� untuk mencari� pengetahuan� atau pengalaman� belajar� adalah Siklus Belajar. Metode penelitian yang digunakan adalah eksperimen semu (quasi experiment)� dengan� desain� pretest� and posttest� control� group design.� Populasi penelitian ini adalah seluruh siswa kelas VIII MTsN Darma Kabupaten Kuningan dan sampel diambil dengan menggunakan dua kelas dengan teknik simple random sampling.� Kelompok� eksperimen� diberi� perlakuan� model� pembelajaran� siklus belajar,�� sedangkan�� kelompok� kontrol� menggunakan�� pembelajarannya�� secara konvensional. Instrumen yang digunakan yaitu lembar observasi, tes literasi sains, lembar� kerja� kreativitas� siswa,� dan� angket� respon� siswa.� Berdasarkan� hasil penelitian dan analisis data, diperoleh rata-rata N-gain literasi sains sebesar 0,276 untuk kelas kontrol termasuk kategori rendah dan 0,439 untuk kelas eksperimen termasuk kategori sedang.�� Sedangkan rata-rata N-gain� kreativitas� siswa dalam memecahkan masalah sebesar 0,547 untuk kelas kontrol termasuk kategori sedang dan� 0,695� untuk� kelas� eksperimen� termasuk� kategori� sedang.� Hasil� pengujian hipotesis literasi sains dengan menggunakan uji Paired Samples t Test, diperoleh thitung�� =� 13,397�� kelas�� eksperimen�� >�� thitung�� =� 8,966�� kelas�� kontrol,�� hal� ini menunjukkan� bahwa� literasi� sains� siswa� dengan� menggunakan� model� siklus belajar� lebih� baik� daripada� penggunaan� model� konvensional.� Sedangkan� hasil perhitungan kreativitas siswa diperoleh thitung = 41,869 kelas eksperimen > thitung = 23,370�� kelas� kontrol,�� hal� ini� menunjukkan�� bahwa�� kreativitas�� siswa� dalam memecahkan� masalah� menggunakan� model� siklus� belajar� lebih� baik� daripada penggunaan model secara konvensionalKeywords: Siklus Belajar; Literasi Sains; Kreativitas Siswa�
Implementasi Model Pembelajaran Advance Organizer Berbasis Peta Konsep Terhadap Aktivitas Belajar Dan Hasil Belajar Siswa
Authors: Sudrajat Yogi , Sulistyono Sulistyono , Hindriana Anna Fitri
Published: October 2020

This research is motivated by students' science process skills that are still low. Factors that cause low science process skills are low mastery of students' concepts of subject matter. The purpose of this study is 1) to describe the implementation of learning with the implementation of an advance organizer model based on concept maps on learning activities and student learning outcomes, 2) to determine the implementation of the advance organizer model based on concept maps can improve student learning activities, 3) to determine the implementation of the model advance organizer based on concept maps can improve student learning outcomes on the concept of the reproductive system, 4) to find out the response of the students to the implementation of the advance organizer model based on concept maps of learning activities and student learning outcomes. The method used in this study is mixed methods research. The sampling technique is cluster random sampling in two classes, namely the experimental class and 40 students for the control class. The research instrument used is the student activity task and rubric, concept mastery essay test, student response questionnaire on learning and teacher and student activity observation sheets. Data analysis techniques used are normality test, homogeneity test and hypothesis test. Based on the results of hypothesis testing statistics shows the value of Sig. amounting to 0.415> 0.05, with a value of t = 4.855 with Sig. 0,000 <0,05 means that the implementation of the advance organizer model based on concept maps can improve student learning activities on the concept of the reproductive system in class XI of SMA Negeri 1 Lumbung, Ciamis Regency. Based on the results of hypothesis testing statistics shows the value of Sig. amounting to 0.422> 0.05, with a value of t = 8.336 with Sig. 0,000 <0,05 means that the implementation of the advance organizer model based on concept maps can improve student learning outcomes in the concept of the reproductive system in class XI of SMA 1 Lumbung, Ciamis Regency. The conclusion in this study is the implementation of an advance organizer model based on concept maps can improve student activity and learning outcomes on the concept of reproductive systems in class XI of SMA Negeri 1 Lumbung, Ciamis RegencyKeywords: Advance organizer model; Concept map; Activity and student learning outcomes
Pengembangan Modul Biotesitik Pencemaran Lingkungan Untuk Meningkatkan Nilai Karakter Religius Dan Peduli Lingkungan
Authors: Majdi Muhamad , Soetisna Usep , Wahidin Wahidin
Published: October 2020

This research is motivated by sense of knowing from researcher about the feasibility of biological materials used in Madrasah Aliyah. Learning Objectives MANU Putri Buntet Pesantren Cirebon focuses on achieving the vision and realizing the mission. Based on the results of observation of learning and interviews with biology teachers, it was found that to support the achievement of learning objectives in MANU Putri Buntet Pesantren Kabupaten Cirebon required instructional materials designed with attention to the characteristics and needs of students according to the characteristics of the school. This research uses research and development method about instructional system approach. The research procedure includes five major stages of instructional design development as analysis, design, development, implementation, and evaluation. Products of research and development in the form of Bioteistik module. Bioteistic module teaching materials have been validated and obtained an average score of 79.17% falling within the eligible category. Bioteistic Implementation. Bioteistic modules have been validated and gained in learning significantly optimizing the internalization aspects of students' attitude values. Internalization of religious and environmental values of each observation 96,43% and 82.97 % and 81.68 % are both categorized as entrenched. Implementation of Bioteistic Module at MANU Putri Buntet Pesantren� Cirebon get positive response from teachers and students. This study shows that the Bioteistic module teaching materials are feasible to be implemented and effective in optimizing student learning outcomes especially in the affective domainKeywords: Module; Bioteistik; Value of Religious Character; Caring Environmental;
Technical nuances of a posterior-only L5 vertebrectomy with anterior column reconstruction
Authors: Bogdan Lukasz , Galgano Michael
Published: October 2020

Background:

Burst fractures involving the L5 vertebra are quite rare . They can be managed with anterior, posterior, or combined 360 approaches. Here, we report a 25-year-old female who presented with a traumatic cauda equina syndrome attributed to an L5 burst fracture following a motor vehicle accident, and who did well after a posterior-only decompression/fusion.

Case Description:

A 25-year-old female presented with a traumatic cauda equina syndrome attributed to an L5 burst fracture following a motor vehicle accident. She was treated with a posterior-only vertebrectomy and followed for 5 postoperative months. During this time, she experienced complete resolution of her preoperative neurological deficit and demonstrated radiographically confirmed spinal stability.

Conclusion:

One of the major pros for the all-posterior L5 corpectomy as in this case, was that the patient underwent a successful single-stage, single-position operation. However, the posterior-only L5 corpectomy approach is technically demanding, and only allows for the placement of a lower profile interbody cage.
Fusiform superior cerebellar artery aneurysm treated with flow diversion: A case report
Authors: Serulle Yafell , Khatri Deepak , Fletcher Jada , Pappas Anna , Heidbreder Audrey , Langer David , Ortiz Rafael A.
Published: October 2020

Background:

Fusiform aneurysms of the distal superior cerebellar artery are rare and challenging to treat. Due to the rarity of these lesions, there is little consensus regarding their management. Treatment options have traditionally included parent artery sacrifice with either an endovascular approach or microsurgical clipping. Given the small diameter of the superior cerebellar artery, flow diversion has not been typically considered as a viable treatment option for these aneurysms.

Case Description:

A 67-year-old female presented complaining of severe sudden onset headache. Noncontrast head CT demonstrated no intracranial hemorrhage. Head CT angiogram demonstrated a 4.2 mm fusiform aneurysm in the distal right superior cerebellar artery. The patient underwent treatment with the Pipeline embolization device which was deployed in the right superior cerebellar artery covering the aneurysm. Six-month posttreatment follow-up angiogram demonstrated resolution of the aneurysm with patency of the parent vessel.

Conclusion:

To the best of our knowledge, this is the first report of a distal superior cerebellar artery aneurysm treated with the Pipeline embolization device. The use of a Pipeline stent to create flow diversion should be considered in a case of a fusiform aneurysm of the right superior cerebellar artery. Treatment with flow diversion may allow for the treatment of the aneurysm while preserving patency of the parent vessel.
Traumatic acute epidural hematoma caused by injury of the diploic channels
Authors: Teramoto Shinichiro , Tsutsumi Satoshi , Ishii Hisato
Published: October 2020

Background:

Traumatic acute epidural hematomas (EDHs) commonly develop by rupture of the meningeal arteries. EDH caused by an injury of the diploic channel (DC) has not been reported.

Case Description:

A 21-year-old man suffered a head injury while falling off the skateboard. At presentation, the patient was drowsy but did not exhibit any focal neurological deficits. Cranial computed tomography (CT) revealed a biconvex intracranial hematoma with 18-mm thickness in the high parietal region and a linear fracture that involved both the outer and inner tables and passed above the hematoma. A well-developed and large DC was observed near the hematoma. Patient’s consciousness level decreased at 12 h after admission with considerable growth of the hematoma. A frontoparietal craniotomy revealed an EDH. The dura mater and the meningeal arteries underneath the hematoma were intact. The medial bone cut caused brisk bleeds from the large DC. Postoperative CT revealed the cut of the DC and other finer DCs exhibiting air density and lying near the fracture. Based on these findings, we assumed that the EDH was developed by an injury of the DCs.

Conclusion:

Traumatic EDH can develop by an injury of the DCs. Careful observation of patient’s neurological status and precise interpretation of neuroimages is important to identify venous EDHs.
Identifying Potential Off-Target Protein Binders of Glutamate-Ureido-Lysine, a Prostate Cancer Specific Imaging Agent
Authors: Bakht Martin , Hayward John , Shahbazi-Raz Farsheed , Meister Daniel , Pillon Adam , Stover Mathew , Tronchin Adam , Mader Lavleen , Fifield Bre-Anne , Ku Sheng-Yu , Cheon Gi Jeong , Kang Keon Wook , Wang Yuzhuo , Dong Xuesen , Beltran Himisha , Porter Lisa , Trant John F.
Published: October 2020

Prostate-specific membrane antigen (PSMA) is highly overexpressed in most prostate cancers and is clinically visualized using PSMA-specific probes incorporating Glutamate-Ureido-Lysine (GUL). PSMA is effectively absent from certain high-mortality, treatment-resistant subsets of prostate cancers, such as neuroendocrine prostate cancer (NEPC); however, GUL-based probes still sometimes identify NEPC metastatic tumours. These probes may bind unknown proteins associated with PSMA-suppressed cancers. We identified the upregulation of PSMA-like aminopeptidase NAALADaseL and the metabotropic glutamate receptors (mGluRs) in NEPC; we found that the expression levels inversely correlate with PSMA expression and are associated with poor clinical prognosis indicating they may participate in NEPC disease progression. Computationally predicting that GUL-based probes bind well to these targets, we designed and synthesized a new fluorescent probe to investigate these proteins in vitro, where it shows excellent affinity for PSMA, NAALADaseL and specific mGluRs associated with poor prognosis.
Cortical Implants In Cerebrum - A Review
Authors: Rieshy V  , Yuvaraj Babu K  , Gayatri Devi R
Published: October 2020

The cortical implant is neuroprosthetic which is a direct bridging link to the cerebral cortex of the brain. It provides stimulation and has different benefits depending upon the type of design and the placement of the implant. It is a typical cortical with a microelectrode array, a small device that transmits or receives the neural signal. Its main goal is to replace the neural circuitry in the brain that no longer functions properly. It has a wide variety of potential uses from restoring vision to helping patients who suffer from dementia. These implants are placed on the prefrontal cortex. Prefrontal Cortex is helpful in restoring the attention that helps in decision making. These implants act as a replacement that replaces the damaged tissues in the cortex. This review was done based on the articles obtained from various platforms like PubMed, PubMed Central and Google Scholar. They were collected with a restriction on a time basis from 2000 - 2020. The inclusion criteria were original research papers. In vitro, studied among various conditions and articles that contain pros and cons. Exclusion criteria came into account for review articles, retracted articles and articles of other languages. All the articles are selected based on cortical implants in the cerebrum. Cortical implants are placed to replace the neural circuitry in the brain that no longer functions properly. It helps patients with neurological disorders. It helps patients who have difficulty in complex sensory and neural functions. The biggest advantage of neuroprosthesis is that it is directly interfaced with the cortex.
MENUMBUHKAN TINDAK PIKIR KREATIF MELALUI MODEL PEMBELAJARAN PACE
Authors: Wardhani Indah Setyo
Published: October 2020

Tindak berpikir kreatif sangat diperlukan masyarakat guna pengambilan keputusan dalam menghadapi sebuah permasalahan kompleks. Matematika sebagai disiplin ilmu yang membutuhkan tindak berfikir kreatif mengambil peran penting dalam menunjang pengambilan keputusan. Berpikir kreatif nampak dalam bentuk kemampuan menemukan hubungan-hubungan yang baru serta memandang sesuatu dari sudut pandang yang berbeda dari yang biasanya. Tindak pikir kreatif dalam matematika dapat dimulai dari Sekolah. Dalam menumbuhkan tindak berfikir kreatif, siswa/mahasiswa dalam mempelajari matematika di sekolah/perguruan tinggi diharapkan tidak hanya mencontoh dan mencatat bagaimana cara menyelesaikan soal yang telah dikerjakan oleh guru/ dosen tetapi memahami bagaimana alur dari penyelesaian soal tersebut. Salah satu model pembelajaran yang dapat menumbuhkan kemampuan berpikir kreatif matematis adalah model pembelajaran PACE. PACE merupakan model pembelajaran yang berlandaskan konstruktivisme yang memiliki tahap/fase: Proyek (Project), Aktivitas (Activity), Pembelajaran kooperatif (Cooperative Learning) dan Latihan (Exercise). Model pembelajaran PACE baik untuk diterapkan dalam pembelajaran matematika, karena dapat menumbuhkan tindak berpikir kreatif matematis.
ANALISIS KEMAMPUAN KOGNITIF SISWA DALAM MEMECAHKAN MASALAH MATEMATIKA
Authors: Nafi'an Muhammad Ilman
Published: October 2020

Penelitian ini bertujuan untuk mengungkapkan kemampuan kognitif yang dimiliki siswa secara lengkap dan terstuktur dalam memecahkan masalah yang timbul dalam matematika yang menggunakan sebuah tes yang disebut tes superitem. Penggunaan tes ini sebagai pilihan alternatif untuk mempersingkat waktu guru dalam melakukan penilaian di kelas, dengan mengidentifikasi tingkatan kemampuan ranah kognitif siswa yaitu mengingat, memahami, menerapkan, menganalisis, mengevaluasi, kreasi. Digolongkan kembali level kemampuan siswa menurut 5 tingkatan penalaran taksonomi SOLO prastuktural, unistruktural, multistruktural, relasional, dan abstrak diperpanjang. Jenis penelitian ini adalah deskriptif kualitatif. Penelitian ini dilakukan di SMP Khadijah Surabaya. Subjek penelitian dipilih berdasarkan data nilai ulangan selama pembelajaran dikelas serta tingkat keaktifannya, maka diperoleh 1 siswa dengan rata- rata tinggi, 1 siswa rata- rata rendah.
PROFIL PENGAJUAN MASALAH MATEMATIKA SISWA SMP BERDASARKAN GAYA KOGNITIF
Authors: Afifah Dian Septi Nur
Published: October 2020

Penelitian bertujuan mendeskripisikan profil pengajuan masalah siswa berdasarkan gaya kognitif Field Independent (FI) dan field dependent (FD ). Subjek penelitian adalah 1 siswa yang bergaya kogntif FI dan 1 siswa yang bergaya kognitif FD. Hasil analisis adalah: Profil pengajuan masalah oleh subjek FI: semua respon merupakan soal matematika yang bersumber dari informasi verbal; semua soal dapat terpecahkan, sudah ada soal dengan tingkat kesulitan tinggi, namun umumnya soal dengan tingkat kesulitan sedang; beragam; umumnya memuat data baru. Ditinjau dari segi sintaksis: kualitas soal tergolong ketegori tinggi. Ditinjau dari segi semantik: kualitas soal tergolong ketegori tinggi. Profil pengajuan masalah oleh subjek FD: ada respon yang merupakan pertanyaan non-matematika, dan respon lainnya adalah soal matematika yang bersumber dari informasi verbal; ada soal yang tidak dapat terpecahkan, sudah ada soal dengan tingkat kesulitan tinggi; kurang beragam; umumnya tidak memuat data baru. Ditinjau dari segi sintaksis: kualitas soal tergolong ketegori tinggi. Ditinjau dari segi semantik: kualitas soal tergolong kategori sedang.
ANALISIS PEDAGOGICAL CONTENT KNOWLEDGE (PCK) GURU MATEMATIKA DAN PRAKTIK PEMBELAJARANNYA
Authors: Maryono Maryono
Published: October 2020

Pedagogical Content Knowledge (PCK), dikenalkan pertama kali oleh Lee Shulman pada tahun 1986. PCK terdiri dari 2 bagian besar yaitu Pedagogical Knowledge (Pengetahuan Pedagogis/kompetensi pedagogis) dan Content Knowledge (Pengetahua Konten/kompetensi profesional). Penelitian sebelumnya lebih banyak mengkaji tentang pengetahuan guru saja dan masih sedikit yang mengkaitkannya dengan praktik pembelajaran guru di kelas. Oleh karena itu penelitian ini akan menganalisis PCK yang dikaitkan dengan praktik pembelajaran di kelas yang disebut dengan Pedagogical Content Practice (PCP). Secara sederhana PCP didefinisikan dengan praktik mengajar guru yang disesuaikan dengan PCK-nya. Penelitian ini bertujuan untuk mendeskripsikan hubungan antara PCK dengan PCP guru. Pendekatan yang digunakan adalah kualitatif deskriptif. Partisipan penelitian ini adalah 3 guru (dengan variasi lama mengajar yang berbeda). Hasil dari penelitian ini secara umum adalah: (1) guru pertama menunjukkan PCK dan PCP yang cukup; (2) guru kedua menunjukkan PCK dan PCP yang baik; (3) sedangkan guru ketiga juga menunjukkan PCK dan PCP yang baik.
PENINGKATAN HASIL BELAJAR MATEMATIKA MELALUI MODEL PEMBELAJARAN SCRAMBLE DENGAN PEMANFAATAN MACROMEDIA FLASH
Authors: Indrawatiningsih Nonik
Published: October 2020

Penelitian ini bertujuan untuk meningkatkan hasil belajar pada sub bab Pengukuran Sudut melalui model pembelajaran Scramble dengan pemanfaatan Macromedia Flash 8.0 pada siswa kelas VB SD Muhammadiyah 9 Malang. Penelitian ini mengikuti desain penelitian tindakan kelas. Data pada penelitian ini berupa data hasil belajar siswa sebelum pelaksanaan tindakan, data hasil evaluasi disetiap siklus, dan data hasil belajar siswa setelah pelaksanaan tindakan. Hasil penelitian menunjukkan adanya peningkatan hasil belajar siswa setelah menerapkan model pembelajaran Scramble dengan pemanfaatan Macromedia Flash 8.0. Peningkatan tersebut sebesar 7,41%, dengan rata-rata nilai 85,75. Berdasarkan hasil tersebut dapat disimpulkan bahwa hasil belajar siswa Kelas VB SD Muhammadiyah 9 Malang pada sub bab pengukuran sudut mengalami peningkatan setelah menerapkan model pembelajaran Scramble dengan pemanfaatan Macromedia Flash 8.0.
PENINGKATAN PRESTASI BELAJAR PADA MATERI PENJUMLAHAN DAN PENGURANGAN BILANGAN MELALUI METODE TALKING STICK
Authors: Musaroh Musaroh
Published: October 2020

Penelitian ini bertujuan untuk mengetahui peningkatan prestasi belajar prestasi belajar matematika siswa SD, khususnya pada materi penjumlahan dan pengurangan melalui penerapan metode talking stick. Penelitian ini merupakan penelitian tindakan kelas, yang rancangannya meliputi perencanaan, pelaksanaan tindakan, observasi, dan refleksi.Subjek penelitian adalah siswa kelas 1 SDN Gador 2 tahun pelajaran 2014/2015.Instrumen penelitian meliputi lembar tes, lembar observasi, lembar wawancara, dokumentasi dan perangkat pembelajaran.Hasil penelitian menunjukkan bahwa dengan diterapkannya metode pemberian balikan terbukti mampu meningkatkan prestasi belajar siswa yaitu terjadinya peningkatan prestasi belajar siswa pada siklus I 78,57 dengan prosentase ketuntasan belajar siswa 71,43% meningkat pada siklus II menjadi 91,43 dengan prosentase ketuntasan belajar siswa 100%.
PENGARUH KEMAMPUAN VERBAL, NUMERIK, DAN SPASIAL TERHADAP KEMAMPUAN MENYELESAIKAN SOAL CERITA
Authors: Mukaromah Sri Jamilah , Hasyim Maylita
Published: October 2020

Penelitian ini bertujuan untuk mengetahui pengaruh kemampuan verbal, numerik, dan spasial terhadap kemampuan menyelesaikan soal cerita bangun ruang sisi datar pada siswa kelas VIII SMP Negeri 2 Tugu Tahun Pelajaran 2016/2017. Penelitian ini merupakan penelitian kuantitatif dengan jenis penelitian assosiatif kausal.Populasi penelitian mencakup seluruh siswa kelas VIII SMP Negeri Tugu. Sampel yang digunakan adalah siswa kelas VIII A, VIII F, dan VIII H yang diambil dengan teknik cluster random sampling sejumlah 82 siswa. Pengambilan data menggunakan metode tes. Hasil analisis menunjukkan bahwa ada pengaruh kemampuan verbal, numerik dan spasial secara simultan terhadap kemampuan menyelesaikan soal cerita sebesar 29,9% dengan persamaan regresiÂ Â Y = 18,740 + 0,300X1 + 0,239X2 + 0,209X3
UPAYA MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA DENGAN MENGGUNAKAN MODEL PEMBELAJARAN STAD
Authors: Musriah Musriah
Published: October 2020

This research is aimedÂ  to improve mathematics students learning outcomesin elementary school, especially on folding symmetry and rotary symmetry materials throughthe implementation of cooperative learning on STAD. This research was a classroom action research refferedto Kemmis and Mc Taggartâ€™s design, which includes planning, acting, observing, and reflecting. The research subject were all the student of fifth gradeÂ  in SDN 1 Ketajen Gedangan Sidoarjo inÂ  theÂ  the period of 2017/2018. After the action is applied, average value in the test resultson cycle I is 61,66 while average value in the test resultson cycle II is 70.

Keywords: STAD model, mathematics study result

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PERBEDAAN HASIL BELAJAR SISWA DITINJAU DARI MODEL SAVI DENGAN MODEL RECIPROCAL TEACHING
Authors: Gayanti Nurfitriana , Anggreini Dewi
Published: October 2020

This study aims to know about differences in student learning outcomes that are reviewed from the SAVI learning modelwith Reciprocal Teaching learning model on circle material. This quantitative quasi-experiment research carried in SMPN 1 Karangrejo with 348 population and sample takencluster random samplingso that there are 2 classes namely VIII D class as a SAVI learning model class with 32 students, and VIII B clas as a reciprocal teaching learning model class with 32 students. The data analize using t-test. After making a calculation with a significant level is 5% and dk 62 so obtained tcount= 7,141765 > ttable= 1,99897, its mean H0 rejected  and H1 received, so it was concluded that there was a significant difference between the learning outcomes of mathematics using the SAVI learning model and the Reciprocal Teaching learning model at the learning outcomes of mathematics on circle material at the students VIII class in SMPN 1 Karangrejo in the period 2017/2018

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Keywords:mathematics learning outcomes, SAVI, reciprocal teachin
ANALISIS KEBIJAKAN ENERGI NASIONALSEBAGAI PRODUK KEBIJAKAN TRANSISI ENERGI INDONESIA
Authors: Wahid La Ode Muhammad Abdul
Published: October 2020

Indonesia telah menetapkan Peraturan Pemerintah Nomor 79 T ahun 2014 tentang Kebijakan Energi Nasional (KEN). KEN sebagai suatu produk kebijakan publik ditetapkan setelah melalui perdebatan â€œtop-downâ€ sejak tahun 2010. Sasaran KEN hanya fokus kepada penyediaan energi, padahal kebijakan energi sudah beralih ke sisi kebutuhan energi. KEN tidak menetapkan sasaran mitigasi gas rumah kaca. Untuk mendukung pencapaian sasaran KEN tentang bauran energi baru dan terbarukan (EBT), Pemerintah Indonesia telah menetapkan berbagai regulasi tentang Feed-in T ariff harga jual listrik pembangkit EBT namun tidak berjalan maksimal karena harganya lebih mahal. Pemerintah juga menganggarkan subsidi kepada investor EBT tetapi ditolak karena bertentangan dengan amanat undang-undang. Berbagai kelemahan dalam KEN perlu dianalisis untuk perbaikan KEN di masa datang. Metode analisis dilakukan secara kualitatif dan kuantitatif. Berdasarkan hasil analisis menunjukkan bahwa sasaran KEN perlu di revisi dan diperluas sampai ke sasaran konservasi energi untuk pengguna energi akhir, termasuk potensi mitigasi gas rumah kaca. Debat KEN perlu lebih banyak dilakukan secara 'bottom-up' dan melibatkan kementerian pekerjaan umum dan perumahan rakyat. Penetapan sasaran KEN perlu didukung dengan berbagai pemodelan yang akurat dan hasilnya dijadikan sebagai dasar untuk penyusunan Rencana Umum Energi Nasional. KEN juga perlu mengantisipasi dampak kebijakan energi terhadap kebutuhan tenaga kerja dan investasi sektor energi dan sedapat mungkin ditetapkan dalam bentuk undang-undang.Kata kunci: kebijakan energi nasional
SINTESABIO-BENSIN MELALUI PERENGKAHAN KA T ALITIK MINY AK JELANT AH DENGAN KA T ALIS ZEOLITE ALAM BA Y AH
Authors: Murti SD Sumbogo , N Elfi
Published: October 2020

Peningkatan pemakaian Bahan bakar minyak yang Krisis energi terhadap BBM saat ini mendorong pencarian sumber energi alternatif yang terbarukan sebagai pengganti suplai energi berbasis minyak bumi. Salah satu sumber energi alternatif berasal dari minyak tumbuhan (nabati). Di Indonesia penelitian mengenai minyak tumbuhan (nabati) antara lain pemanfaatan minyak sawit untuk menghasilkan bio-bensin. Namun penggunaan minyak sawit sebagai bahan baku pembuatan biobensin dapat menimbulkan masalah pangan. Untuk itu pembuatan bio-bensin beralih ke minyak jelantah yang juga mempunyai karakteristik hampir sama dengan karakteristik yang dimiliki oleh minyak bumi. Pada penelitian ini akan dilakukan perengkahan katalitik minyak jelantah untuk menghasilkan bahan bakar setara bensin dengan bantuan katalis zeolit alam bayah. Proses perengkahan katalitik minyak jelantah dengan katalis zeolit alam bayah dilakukan pada fasa cair dan tekanan awal 8 MPa secara batch dengan variasi suhu (380, 400 dan 420Â°C), variasi waktu reaksi (60 dan 90 menit) dan rasio katalis/minyak jelantah (1/100 dan 1/75). Dari penelitian ini diperoleh yield bio bensi dari produk cair perengkahan katalitik tertinggi mencapai 7,16% pada tekanan awal 8 Mpa, otemperatu reaksi 420 C dan rasio katalis 1/100.Kata kunci : minyak jelantah, perengkahan katalitik, zeolit alam bayah, bio-bensin
ANALISA BIAYA PEMBANGKITAN PEMBANGKIT LISTRIK TENAGA PANAS BUMI SKALA KECIL
Authors: Budiman Abdul Hamid , Windaru Akim
Published: October 2020

Potensi panas bumi di Indonesia sangat besar. Namun demikian pengembangan panas bumi di Indonesia masih rendah. Salah satu kendala yang banyak dihadapi dalam pengembangan energi panas bumi saat ini adalah letaknya yang terisolir jauh dari beban, sehingga menyebabkan tingkat keekonomianya kurang menarik.Tulisan ini menjelaskan biaya pembangkitan dari Pembangkit Listrik Tenaga Panas Bumi (PLTP) skala kecil menggunakan tiga skenario yaitu Business as Usual (BAU), Tingkat Kandungan Dalam Negeri (TKDN) dan Clean Development Mechanism (CDM). Hasil studi menunjukkan biaya pembangkitan rata-rata untuk PLTP skala kecil adalah 15,5 cent $/kWh untuk skenario BAU, 14,36 cent $/kWhuntuk skenario TKDN, 14,65 cent $/kWh untuk skenario CDM dan 13,51 cent $/kWh untuk skenario gabungan. Dibanding dengan Pembangkit Listrik TenagaDisel (PLTD), PLTP skala kecil masih lebih kompetitif, dimana biaya pembangkitan PLTD skala kecil adalah 17,20 cent $/kWh.Kata kunci: PLTP Skala Kecil, Biaya Pembangkitan, BAU, TKDN, CDM
PENGGUNAAN SURFAKTAN UNTUK MENGURANGI KANDUNGAN AIR DALAM EMULSI MINYAK
Authors: Syafrinaldi Ade
Published: October 2020

Emulsified oil is considered as rarely acceptable waste oil to be reused or even recycled. Efforts thathave been made in the last 40 years for the development of reliable and efficient demulsificationtechniques, cannot avoid the hard fact that it is not an easy task to break the most emulsified oil in shorttimes. For economic and operational reasons, it is necessary to separate the water from the emulsifiedoil to an acceptable level before it fed into the reclaimed fuel oil plant. One of the most widely usedmethods in treating water-in-oil emulsions is using surfactant to accelerate the emulsion breakingprocess. Three commonly used surfactants with high HLB value (Nonyl Phenol Ethoxylate NP-9,Tween 80 and Sodium Dodecyl Sulphate SDS), dissolved in toluene to form 25% solution, wereapplied into 100 ml emulsified waste lubricants originated from collectors in Balikpapan suburb. Thedemulsifying effects of all three surfactants were then examined, including the heat effect by warmingup the whole system. All experiments were carried out in different concentrations of each solution, 500ppm, 700 ppm, 900 ppm and 1100 ppm. The performance level was determined by the amount of waterseparated. The experiments continued using best performed surfactants and centrifugal separators tomeet the targetted water content in the waste lubricants by 5% and sediment content by 3% before itfed into the reclaimed fuel oil plant. Result showed that surfactants with the best demulsifying effectwere NP-9 and SDS. Both worked at the optimum concentration of 700 ppm. The targetted watercontent was successfully exceeded. Water content in the waste lubricants was reduced from 34% to0.08% with NP-9 and to 0.8% with SDS. Sediment content was however not as successful. Sedimentcontent in waste oil was reduced from 12.30% to only 6.56% with NP-9 and to only 5.11% with SDS.The removed water from the process needs further treatment before disposal. The concentration ofBOD 5, COD, oil and fat, and ammonia are beyond the quality standard of waste water. The wastewater passed only in pH, Dissolved Sulfide and Total Phenol.Keywords : surfactant, emulsion, demulsification effect, demulsifier solution, hydrophilic lipophilicbalance
Summary review and synthesis: effects on habitats and wildlife of the release and management of pheasants and red‐legged partridges on UK lowland shoots
Authors: Sage Rufus B. , Hoodless Andrew N. , Woodburn Maureen I. A. , Draycott Roger A. H. , Madden Joah R. , Sotherton Nicolas W.
Published: October 2020

This review examines 128 items of primary and other literature to provide an insight into current knowledge of the effects of pheasant and red‐legged partridge releasing and associated management for shooting on habitats and wildlife in the UK. It summarizes key findings and uses them to define sub‐topic sections for which the effects are classified as positive, neutral or negative. This forms the basis of a numerical synthesis of effects and some overall conclusions.

Fifty‐four directly related studies were identified, which defined 25 sub‐topics or effects. A mix of positive, neutral and negative ecological consequences of releasing are described, for which the corresponding number of sub‐topics approximately balance each other. Positive effects are usually a consequence of gamebird management activities, most negative effects are caused by the released birds themselves. The different spatial scales at which effects are likely to operate are identified, for example effects on generalist predators or of gamecrops occur at the landscape scale, while many habitat effects have a local impact.

Some local negative effects have relatively straightforward management solutions for example, by identifying and avoiding especially sensitive sites when locating release pens. The synthesis identifies seven negative effects associated with the increasing scale of releasing. Several positive effects are linked to economic considerations and are more likely to have greater impact at larger shoots. Pheasants released into woodland have more direct local effects than partridge releases on farmland.

The framework of sub‐sections could be used as the basis for a more complex synthesis or weighted analysis for a particular set of ecological priorities. The review findings should be interpreted as representing a median type of shoot in terms of size and adherence to good practice over recent decades. They increase the awareness of potential conflicts, highlighting the need for best practice and what factors to consider for mitigation.
Chorological contributions for some narrow-range endemic plant taxa in Turkey
Authors: HAMZAOĞLU Ergin , KOÇ Murat
Published: October 2020

The taxonomy of narrow endemic plant taxa, chorology and protective biology are an important contribution for every new population determined. Here, new population information from Turkey has been given for a total of 5 narrow-range endemic plant taxa, led by Aethionema dumanii (Brassicaceae), Astragalus aytatchii (Fabaceae), Salvia halophila (Lamiaceae), Sedum hewittii (Crassulaceae) and Senecio olympicus (Asteraceae). Furthermore, some features and ecological preferences, localities, distribution map and images of the species are given.
Understanding Learner Interaction in Web Based Learning to Improve English Speaking Skills in Second Grade of SMAN 4 Senior High School Bandar Lampung: Using Canvas Learning Management System
Authors: Mendis Upeka , Dharmawan Yanuarius Yanu
Published: October 2020

Understanding learner interaction in web based learning to improve English speaking skills in second grade classroom of SMAN 4 senior high school Bandar Lampung: using canvas learning management system, English Study Program, Teacher Training Faculty of Bandar Lampung University.The objective of conducting this research is to find out the interaction in Canvas Learning management system (LMS) in the speaking classroom and effects of using Canvas LMS to improve speaking skills. After it is confirmed that there is indeed necessity behind the action, I will explain concepts of interaction, Canvas LMS and speaking skills.   The participants of this research are students in second grade of SMAN 4 senior high school. They are selected as data resource to know about interaction and effects of using Canvas LMS. From them, I retrieve data to be analyzed. By giving questionnaire, observing and conducting independent sample t-test method gives me some findings to discuss. The results show that there is indeed necessity in doing English speaking lessons in Canvas LMS. Moreover it is about students’ interaction and effects to improve English speaking skills. First is about interaction, it is the main ingredient in any kinds of learning methods. There are three main types introduced my Moore (1989), there are learner-instructor, learner- learner and learner-content. Those types necessary appear in web based learning. These interactions lead to improve students’ speaking skills too.
The Effects of Students' Perception on Teacher’s Pedagogic Competence and Language Attitude Towards Student’s English Achievement
Authors: Nupus Hayati
Published: October 2020

This research is a kind of survey and aims to find and analyze empirically the efects of student perception on Teacher’s pedagogic competence towards student’s English achievement, the effects of  language attitude towards Student’s English achievement, and the effects of The student perception on teacher’s pedagogic competence and language attitude towards student’s English achievement. The Method used in this research is a survey method. The observed population of this research is student of second grade of state vocational high schools in Serang-Banten, sample was taken as many as 50 students, the sample was gained through simple random sampling, which means that the reseacher mixed the subjects in the population so that they will be considerably the same. The collecting of the data used by the questioner and collecting of student’s English achievement. The gained data was analyzed by using correlation technique and multiple regressions. Previously, the prerequisite test before examining the regression test must be accomplished, such as normality test and linearity test. This research is done on October 2017. The result of the research concluded: 1).There are any significant effects of student perception on Teacher’s pedagogic competence and Language Attitude collaboratively towards students’ English Achievement students at State Vocational High Schools in Serang-Banten. It can be proved by Sig = 0,000 < 0.05 and Fo = 47,843, 2).There is a significant effect of student perception on Teacher’s pedagogic competence towards students’ English Achievement students at State Vocational High Schools in Serang-Banten. It can be proved by Sig = 0,010 < 0.05 and th = 2,677, 3).There is a significant effect of the Language Attitude towards students’ English Achievement students at State Vocational High Schools in Serang-Banten. It can be proved by Sig = 0.000 < 0.05 and th = 4,137.
The Effect of Engage, Study, and Activate Method Towards Students’s Writing on Narrative Text
Authors: Nurbaeti Enung , Rostiana Heva
Published: October 2020

The research aims to know the effect of ESA method towards students’ writing on narrative text at the first grade students of MAN 3 Pandeglang in 2018/ 2019 academic year. The research paper employs non-equivalent control group design. It compares both of experimental group (O2-O1) and control group (O4-O3). In her research which is consisted of 172 that is took as sample 30 as Experimental Class and 30 as Control Class. In this research, the writers use the achievement test in calculating the need of data to the relevant problem, then, giving a treatment to the experimental class by using ESA method and using Lecturer method in control class. The writers use statistical computation in order to find out which hypothesis is accepted and which is rejected, (Ha) or (Ho). From research of data, it is found that tcount is higher than ttable in term of statistic, it could be seen that t-count ≥ t- table = 2,973 ≥2,002. It means that alternative hypothesis (Ha) is accepted and null hypothesis (Ho) is rejected. Based on the finding, the writers concluded that ESA method has an influence in teaching writing on narrative text because it can more explore their imagination on written form.
Use of a dynamic axial external fixator combined with internal cross pins for metacarpal fracture treatment in calves
Authors: YURTAL Ziya , ALTUG Muhammed Enes , DEVECİ Mehmet Zeki Yılmaz , İŞLER Cafer Tayer , ALAKUŞ İbrahim
Published: October 2020

This study aimed to investigate the effectiveness of using dynamic axial external fixator combined with cross pins in the treatment of distal metacarpal fractures in calves. The results of distal metaphyseal metacarpal fractures treated with this method in six calves (four females, two males) were examined. The ages of the patients were 17.16 ± 13.22 and their weight was 52 ± 9.48. The calves were born by pulling during labor and they could not stand up after birth. The clinical and radiological examinations found a distal metaphyseal metacarpal fracture. Dynamic axial external fixator with cross pin support was applied to all patients in the operative treatment. The patients' foot postures, stepping, walking and running were  found to be smooth and adequate in the postoperative examination. Therefore, cross-pin supported dynamic axial external fixation was found to be a strong enough, well-tolerated and easy-to-apply technique which can be used especially in the treatment of open and infected metacarpal fractures.
Paisajes de la turistificación: una aproximación metodológica a través del caso de Sevilla
Authors: Barrero Rescalvo María , Jover Báez Jaime
Published: October 2020

La turistificación se define como la apropiación física y simbólica de un territorio por una fuerte intensificación de la actividad turística en un breve lapso. Según estudios recientes, el proceso impacta con diferente ritmo y grado de profundidad sobre el mercado de la vivienda, las diferentes expresiones culturales, el espacio y la salud públicas o los recursos naturales. En las ciudades que se han convertido en importantes destinos turísticos, la turistificación se entrelaza con otros procesos urbanos y así han comenzado a aparecer trabajos acerca de los cambios en el mercado de la vivienda, la sustitución de comercios tradicionales o el desplazamiento de la población local. Partiendo de diferentes conceptualizaciones del paisaje como territorio producido, percibido y configurado socialmente, se estudian las transformaciones del paisaje urbano a raíz de los cambios físicos, sociales, simbólicos y emocionales favorecidos por la turistificación. Este trabajo plantea un marco metodológico para abordar tales transformaciones y pone de relieve las contradicciones que emergen a la par que avanza el proceso. La aproximación empírica se prueba en la calle San Luis y su entorno inmediato, el eje articulador de barrios tradicionalmente no turísticos del centro histórico de Sevilla y que han entrado en los circuitos recientemente: San Gil, San Luis y San Marcos.
Algorithm to Teach Dialogue-Interview when Training for the Unified State English Exam
Authors: Popova Larisa Vladimirovna
Published: October 2020

Relying on theoretical works in the sphere of foreign language teaching and on personal experience, the author proposes an algorithm to train senior pupils for the oral part of the Unified State Exam, in particular, for task 2: dialogue-interview. The article analyses scientific works focused on teaching a foreign language, the English language and the English grammar, identifies the difficulties school-leavers come across, suggests ways to eliminate grammatical errors when formulating the English interrogative sentences. Scientific originality of the study involves developing innovative methodology to teach a dialogue-interview when training senior pupils for the Unified State English Exam. The research findings are as follows: the author proves that task 2 of the oral part of the Unified State English Exam requires a dialogue-interview competence, and grammar is considered as a means of speech communication.
Using the Technology of Critical Thinking Development while Teaching Foreign Language to Non-Linguistic Students
Authors: Korsakova Galina Grigorievna , Popadina Zhanna Petrovna
Published: October 2020

The paper justifies efficiency of the “critical thinking development” technology when working with juridical cases in foreign language classes at non-linguistic higher school. The article reveals the basic principles of working with the cases that correlate with the stages of the “critical thinking development” technology. Scientific originality of the study involves developing a teaching aid system aimed to form students’ critical thinking skills. The research findings are as follows: the authors identify and describe the basic stages of the “critical thinking development” technology, propose a set of exercises and problematic tasks focused on forming students’ critical thinking.
Process and Resource Based Model to Control Quality of Foreign Specialists’ Professional Training at Higher Military Aviation Schools of the Russian Federation
Authors: Kuznetsov Yuri Nikolaevich
Published: October 2020

The research objective includes identifying structural-meaningful parameters of a model to control quality of foreign military specialists’ professional training. Relying on an informational analysis of normative legal requirements for quality assurance in education, the author introduces his own original approach to developing a quality control model. Scientific originality of the study includes developing a process and resource based model to control quality of foreign specialists’ professional training at higher military aviation schools. The research findings are as follows: the author reveals interrelation of two target functions of educational activity subjects - administrative and pedagogical - at three hierarchical levels (mega-, macro-, micro-level).