bluuebunny/crossref_metadata_2025 huggingface dataset:
The Analysis of Scientific Approach in Thematic Learning Using Webbed Model in Ambawang River State Elementary School
Authors: Kusrini Kusrini
Published: January 2020

The problems of this research focused on the planning, implementation and obstacles of applying a scientific approach to thematic spider web learning models, aiming at making learners more active, critical thinking, the direct process experienced by the learners, the learning could be more meaningful, contextual and fun. This research was conducted at  SDN (State Elementary School) 07 and  SDN 36 at Sungai Ambawang District. It is descriptive qualitative research. The subjects of this research were the educators and the students of grade IV at SDN 07 and SDN 36 of Sungai Ambawang District. The techniques of data collection used were observation, interview, and documentation study. Data analysis was conducted through the steps: data reduction, data display, and conclusion. The technique for examining data validity was by triangulation. The results revealed that the educators had implemented the scientific approach on the thematic spider web learning model. The scientific approach implemented, includes: (1) observing, (2) questioning, (3) trying, (4) reasoning, and (5) communicating. The obstacles encountered in this lesson were lack of adequate facilities and infrastructure, the ability of their educators in mastering the learning strategy, and the low-level participation of some parents who were less concerned about their children's education and also the different characteristics of the learners.
Deep Protein-Ligand Binding Prediction Using Unsupervised Learned Representations
Authors: Kim Paul , Winter Robin , Clevert Djork-Arné
Published: January 2020

In-silico protein-ligand binding prediction is an ongoing area of research in computational chemistry and machine learning based drug discovery, as an accurate predictive model could greatly reduce the time and resources necessary for the detection and prioritization of possible drug candidates. Proteochemometric modeling (PCM) attempts to make an accurate model of the protein-ligand interaction space by combining explicit protein and ligand descriptors. This requires the creation of information-rich, uniform and computer interpretable representations of proteins and ligands. Previous work in PCM modeling relies on pre-defined, handcrafted feature extraction methods, and many methods use protein descriptors that require alignment or are otherwise specific to a particular group of related proteins. However, recent advances in representation learning have shown that unsupervised machine learning can be used to generate embeddings which outperform complex, human-engineered representations. We apply this reasoning to propose a novel proteochemometric modeling methodology which, for the first time, uses embeddings generated via unsupervised representation learning for both the protein and ligand descriptors. We evaluate performance on various splits of a benchmark dataset, including a challenging split that tests the model’s ability to generalize to proteins for which bioactivity data is greatly limited, and we find that our method consistently outperforms state-of-the-art methods.
A Comparison of Scaling Methods to Obtain Calibrated Probabilities of Activity for Ligand-Target Predictions
Authors: Mervin Lewis , Afzal Avid M. , Engkvist Ola , Bender Andreas
Published: January 2020

In the context of bioactivity prediction, the question of how to calibrate a score produced by a machine learning method into reliable probability of binding to a protein target is not yet satisfactorily addressed. In this study, we compared the performance of three such methods, namely Platt Scaling, Isotonic Regression and Venn-ABERS in calibrating prediction scores for ligand-target prediction comprising the Naïve Bayes, Support Vector Machines and Random Forest algorithms with bioactivity data available at AstraZeneca (40 million data points (compound-target pairs) across 2112 targets). Performance was assessed using Stratified Shuffle Split (SSS) and Leave 20% of Scaffolds Out (L20SO) validation.
Nongenetic Control of Receptor Signaling Dynamics with a DNA-based Optochemical Tool
Authors: Ueki Ryosuke , Hayashi Shota , Tsunoda Masaya , Akiyama Momoko , Liu Hanrui , Ueno Tasuku , Urano Yasuteru , Sando Shinsuke
Published: January 2020

Optochemical tools that can modulate activity of the target protein provide an opportunity for studying and regulating the related biological processes. Here we present a DNA-based nongenetic optochemical tool that can control dynamics of growth factor signaling. A photo-caged DNA aptamer for a growth factor receptor was designed to assemble into an active dimer form, depending on UV irradiation, thereby enabling optical control of the dimerization and subsequent activation of the receptor. This photo-caged mimicry of growth factor can be a promising tool for elucidating a linkage between dynamics of signaling and resulting biological outcomes, as well as for manipulating cellular functions and the fate of living cells.
Paper-Based Low Cost Optical Filter
Authors: Tripathi Ajay , Rawat Rajesh , Tiwari Archana
Published: January 2020

We report simple and inexpensive technique using several sheets of white paper for filtering the blue and non-blue radiation of a white light emitting diode source in the transmission mode. We visibly illustrate successful rejection of specific energy of white light by the filtering papers through absorption mechanism where weak transmission of blue and red radiations are observed. In addition, photoluminescence arising from the papers in near infrared region is also presented while using the white light excitation. Owing to the presence of different whitening agents in the papers, selective absorption and divergent coloured emission from the sheets are observed.
Labeling of Proteins for Single-Molecule Fluorescence Spectroscopy
Authors: Zosel Franziska , Holla Andrea , Schuler Benjamin
Published: January 2020

Single-molecule fluorescence spectroscopy has become an important technique for studying the conformational dynamics and folding of proteins. A key step for performing such experiments is the availability of high-quality samples. Here we describe the practical details of a simple and widely applicable strategy for preparing proteins that are site-specifically labeled with a donor and an acceptor dye for single-molecule Förster resonance energy transfer (FRET) experiments. The method is based on introducing two cysteine residues that are labeled with maleimide-functionalized fluorophores, combined with high-resolution chromatography. We discuss how to optimize site-specific labeling even in the absence of orthogonal coupling chemistry and present purification strategies that are suitable for samples ranging from intrinsically disordered proteins to large folded proteins. We also discuss common problems in protein labeling, how to avoid them, and how to stringently control sample quality.
Maser The Medication Adherence, Factor Influencing Adherence and The Executives Of Intense Asthma Children’s In Tamilnadu
Authors: Arulprakasam K C  , Senthilkumar N
Published: January 2020

The commonness and related Weight of ailment because of asthma, it required to get an ideal control of the malady and improve the results of these patients. In any case, it has been seen that there is poor adherence to the treatment, which prompts the problematic control of the illness. To read the adherence for treatment in these patients to survey the effect of Wellbeing instruction and self-activity plan to improve adherence. A forthcoming report Was done in a sum of 986 asthma patients over a time of 3 years. When incorporated into the examination, the patients are followed up after 12 Weeks of non-adherence to the treatment. It was seen that solitary 108 patients (10.95%) had normal non-adherence, and 878 patients (89.05%) Were adherence to the treatment. Elements that Were related to poor adherence Were: LoWer instructive level, poor financial status, changes in routine, and patient's evil mentalities toward Wellbeing. Subsequent to utilizing the different systems for improving the adherence in these patients, the adherence expanded in patients (61.32%) among the prior defaulted patients, while the staying 188 patients (38.68%) Were seen as non-adherence even after different instructive procedures. Nonadherence in asthma the executives is an unavoidable truth and adherence improving system likely as a viable decent doctor and patient relationship. Individualized composed activity plans dependent on pinnacle expiratory stream are proportionate to activity plans dependent on indications.
Evaluation of the hepatoprotective activity of various extracts of Dyschoriste littoralis nees on paracetamol-induced hepatotoxicity rats
Authors: Ravi Teja P D  , Balakrishnan K  , Kottai Muthu A
Published: January 2020

The current investigation was to examine the hepatoprotective potential of D.littoralis Nees. (family Acanthaceae) On paracetamol-induced hepatotoxicity in rats. The aerial parts of D.littoralis Nees. The powder was concentrated with various solvents (PE, EA, and methanol) through Soxhlet concentrates and different crude concentrates utilized for hepatoprotective activity.  Hepatotoxicity was induced by paracetamol (2g/kg b.wt.) on the 5th day of the investigational period and given orally.  Paracetamol-induced rats to exhibit elevated activities of liver enzymes such as SGOT, SGPT, ALP, gamma-glutamyltranspeptidase (GGT), creatinine, urea, total bilirubin, total cholesterol & triglyc in serum. Furthermore, Oral administration of the ethyl acetate concentrates of  D.littoralis (200 mg/ kgb.wt.) given rats were significant reduction the level of SGOT, SGPT, ALP, gamma-glutamyltranspeptidase (GGT) creatinine, urea, total bilirubin, total cholesterol & triglycerides when compared to other concentrates. They also significantly elevated the concentration of complete protein and albumin when compared to other concentrates. Thus, results suggested that ethyl acetate concentrates of D.littoralis could afford better hepatoprotective activity against paracetamol-induced hepatotoxicity rats.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TWO STAY TWO STRAY UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA KELAS X SMA NEGERI 1 KUPANG
Authors: Tae Lidwina Felisima , Fakhruddin Fakhruddin , Soko Imelda Paulina , Prakoso Bagus Hary
Published: January 2020

Two Stay Two Stray  is a cooperative learning model which is majoring the cooperation of each member of group to finish the task given and give chance to its member to share information each other with another group member by following a certain pattern. The purpose of this research is  to investigate the difference of learning achievement between students who have been taught using cooperative learning model of Two Stay Two Stray  type with three intersection  pattern and students who have been taught using cooperative learning model of Two Stay Two Stray  type with the simple pattern. The participants of this research are two groups of 10th grader, the A class as the experiment group and the B class as the control group respectively.  The instruments used in this research is Two Stay Two Stray with three intersection pattern and simple pattern learning which is manifested in the syllabus, Teaching Implementation Plan (RPP), and the questions for pre test and post test. The results of the data analysis were: 1) There was a difference in achievement between students who have been taught using cooperative learning of Two Stay Two Stray  type with three intersection pattern and students who have taught using a model of cooperative learning by Two Stay Two Stray  type with simple pattern, 2) the learning achievements of students who have taught using cooperative learning model of Two Stay Two Stray  type with three intersection pattern were higher than students who have taught using cooperative learning model of Two Stay Two Stray  type with simple pattern.
RESTRIÇÕES ARITMÉTICAS NA MULTIPLICAÇÃO E NA DIVISÃO ENVOLVENDO O ZERO: REFLEXÕES SOBRE OS CONHECIMENTOS DE LICENCIANDOS EM MATEMÁTICA
Authors: Eça José Lucas Matias de , Madruga Zulma Elizabete de Freitas
Published: January 2020

Este artigo objetiva investigar a compreensão de futuros docentes de um curso de Licenciatura em Matemática sobre as restrições operatórias na multiplicação e divisão nas quais o zero está envolvido. Para isso, foram realizadas entrevistas semiestruturadas com seis possíveis formandos de um curso de Licenciatura em Matemática, localizado no Estado da Bahia. Metodologicamente, este trabalho insere-se na perspectiva qualitativa. Constatou-se, após a análise dos dados, que os licenciandos em Matemática em fase final do curso apresentam dificuldades de explicar determinados “porquês” sobre as restrições aritméticas do zero nas operações da multiplicação e divisão. Vê-se, assim, que há a necessidade de o futuro professor de Matemática melhor explorar e se apropriar desse conhecimento, ainda na formação inicial, dada a sua importância no contexto escolar.
VESTÍGIOS DA FORMAÇÃO DE PROFESSORES EM MATO GROSSO: OS PROGRAMAS DE ENSINO PRIMÁRIO DE 1962
Authors: Ferreira Josélia de Souza Soares , Almeida Laura Isabel Marques Vasconcelos de
Published: January 2020

Este artigo refere-se à pesquisa de Mestrado em andamento e tem como objeto de estudo a formação docente e os Programas de ensino da escola primária de 1962. Tem como objetivo compreender o processo de formação de professores, as instruções dos Programas de ensino que orientavam o trabalho pedagógico e conhecer os saberes elementares necessários para o ensino de Matemática. A metodologia ancora-se na abordagem histórico cultural e tem como fontes de pesquisa os Programas de Ensino Primário do Estado de Mato Grosso de 1962 e depoimentos de protagonistas da época, contribuindo para a historiografia da Educação Matemática de outros tempos. Os dados revelam o currículo de Matemática e demais disciplinas que deveriam ser ensinadas nas escolas públicas primárias e as situações didáticas de ensino que deveriam ser planejadas e executadas pelo professor em sala de aula. Outro destaque são os depoimentos de professoras normalistas sobre os Cursos de Treinamentos, considerados essenciais para a formação de professores primários que lecionaram nas escolas públicas primárias mato-grossenses na década de 60.
LA SEMIÓTICA EN LA ENSEÑANZA DE LA FÍSICA
Authors: Mora César
Published: January 2020

En este artículo se presenta una introducción de la Semiótica en la enseñanza de las ciencias. En sus inicios la semiótica se introdujo en la enseñanza de las matemáticas, y posteriormente se ha aplicado para la enseñanza de la física, la química y la biología, principalmente. Se muestra la importancia de la transición entre diferentes los registros semióticos para lograr la semiosis, lo cual se traduce en el aprendizaje correcto de conceptos científicos. Se mencionan diferentes perspectivas para el uso de la semiótica en la enseñanza de la física.
Las grandes exposiciones del siglo XXI frente a la fragilidad del territorio
Authors: Cimadomo Guido , Lecardane Renzo
Published: January 2020

Las exposiciones no son eventos autónomos ni homogéneos, al contrario, su desarrollo constituye la trama de una historia discontinua, el espejo de una sociedad en evolución que experimenta sus reglas y sus paradigmas, mostrándolos a la sociedad. A través de cartografía y bibliografía específica, además de las experiencias personales de los autores, se analizan los eventos de Hannover (2000) que marca el comienzo de las exposiciones del presente siglo, Shanghái (2010), y Milán (2015) para comprender los efectos que los eventos expositivos tienen sobre la transformación de la ciudad y del territorio, en un momento en el cual existe una renovada preocupación sobre el devenir de las ciudades, sometidas a grandes tensiones y exigencias. Los terrenos destinados a estos eventos son un eslabón para unir fragmentos dispersos preexistentes o para crear nuevas centralidades, siempre con el resultado de aumentar la huella metropolitana gracias a las ingentes inversiones que las exposiciones catalizan. Las políticas y estrategias empleadas han ido variando en las últimas décadas incluyendo aspectos relacionados con la sostenibilidad y la resiliencia, pero los resultados no parecen ofrecer indicios que ningún gran evento haya sido capaz de resolver satisfactoriamente los problemas de la fragilidad frente a las presiones urbanas, en el límite entre naturaleza y espacio construido, ni la dicotomía permanente–temporáneo que alcanzan una relevancia clave en la planificación de los eventos.
S. DI VITA Y C. MORANDI - Mega-Events and Legacies in Post-Metropolitan Spaces. Expos and Urban Agendas
Authors: Ezquerra Alcázar Isabel
Published: January 2020

Stefano di Vita y Corinna MorandiMega-Events and Legacies in Post-Metropolitan Spaces. Expos and Urban AgendasMichigan (USA): Palgrave Macmillan, Mega Event Planning Pivot series, 2018. 152 páginas. Idioma: inglés.DOI: 10.1007/978-3-319-67768-2
A. SMITH - Events and Urban Regeneration: The Strategic Use of Events to Revitalise Cities
Authors: Monclús Fraga Javier
Published: January 2020

Andrew SmithEvent and urban regeneration. The strategic use of events to revitalise citiesLondres: Routledge, 2012. 304 páginas. Idioma: inglésISBN: 9780415581486
A. COBO - Prada Poole. La Arquitectura Perecedera de las Pompas de Jabón
Authors: Álvaro Tordesillas Antonio
Published: January 2020

Antonio Cobo (comisario)Prada Poole. La Arquitectura Perecedera de las Pompas de JabónCAAC: 29.03.19-01.09.19 (claustrón sur)MUSAC: 28.09.19-12.01.20 (sala 3)
C. ESPEGEL - Women Architects in the Modern Movement
Authors: Muxí Zaida
Published: January 2020

Carmen EspegelWomen Architects in the Modern MovementNueva York: Routledge, 2018Traducción: Angela Giral
MINERALOGY AND GEOCHEMISTRY STUDY OF REE MINERALS IN HOST ROCKS IN IIC IRON DEPOSIT, BAFGH MINERAL AREA, CENTRAL IRAN
Authors: Lotfi Mohammad , Shirazi Mansoureh Shirnavard , Nezafati Nima , Gourabjeripour Arash
Published: January 2020

The IIC deposit area to the east of the Bafq region exposes rocks that comprise the part of the Central Iran continental terrane. The IIC deposit iron orebodies are magmatic-related hydrothermal deposits that, when considered collectively display a vertical zonation from high-temperature, magmatic ± hydrothermal deposits emplaced at moderate depths (~1–2 km) to magnetite-dominant IOCG deposits emplaced at an even shallower subvolcanic level. The shallowest parts of these systems include near-surface, iron oxide-only replacement deposits, surficial epithermal sediment-hosted replacement deposits, and synsedimentary (exhalative) ironstone deposits. Alteration associated with the IOCG mineralizing system within the host volcanic, plutonic, and sedimentary rocks dominantly produced potassic with lesser amounts of calcic- and sodic-rich mineral assemblages. Our data suggest that hydrothermal magmatic fluids contributed to formation of the primary sodic and calcic alterations. The aim of this study is to delineate and recognize the different iron mineralized zones, based on surface and subsurface study. However, the data do not discriminate between a magmatic-hydrothermal source fluids resolved from Fe-rich immiscible liquid or Fe-rich silicate magma. Iron ores, occurring as massive-type and vein-type bodies are chemically different. Minor pyrite occurs as a late phase in the iron ores. The REE patterns of the mineralized metasomatites show LREE enrichment and strong Eu negative anomalies. The strong negative Eu anomaly probably indicates near-surface fractionation of alkali rhyolites involving feldspars. Field observations, ore mineral and alteration assemblages, coupled with lithogeochemical data suggest that an evolving fluid from magmatic dominated to surficial brine-rich fluid has contributed to the formation of the IIC deposit.
Abordagem social na Ciência da Informação: do campo científico às práticas informacionais
Authors: Souza Edivanio Duarte de , Araujo Ronaldo Ferreira de
Published: January 2020

Editorial, v. 6, n. 3.
Temporary Shelter Simulation Towards Effectiveness Value of OTTV and Thermal Comfort
Authors: Ayu Dyah Puspa , Prayitno Budi , Hariyadi Agus
Published: January 2020

Indonesia is prone to a variety of natural disasters, one of which is earthquakes. Earthquakes are detrimental to human life, causing among other things a loss of shelter. As such, victims of earthquakes need basic assistance in the form of shelter, which the Indonesian government provides in the transition phase of emergency responses. Several innovations in the provision of temporary shelter have arisen in terms of packaging and fast unloading. This research aimed to examine the effective value of OTTV energy (overall thermal transfer value), differences in room temperature, and thermal comfort in existing temporary shelters. OTTV values and thermal comfort are adapted to Indonesia's humid tropical climate, which has a temperature ranging 24–30°C and air humidity of 75%. Temporary shelters were simulated with Rhinoceros and Grasshopper softwares. The simulation was carried out in two stages, with the first stage simulating the temporary shelter materials and the second stage simulating according to a predetermined standard. The results concluded that the effective value of OTTV with the use of Styrofoam-based shelter gives a value of 27.63 W/m2 with a decrease of up to 4.70 W/m2 and the temperature drops to 2–3°C.
Finding a relationship between the composition and the emulsifying character of asphaltenes through FTICR-MS
Authors: Orrego- Ruíz Jorge A.
Published: January 2020

In this work, n-heptane insoluble fractions (asphaltenes) from six crude oils were analyzed by means of Fourier-transform ion cyclotron resonance mass spectrometry (FTICR MS) using both positive Atmospheric Pressure Photo Ionization (+) APPI and negative Electro- Spray Ionization (-) ESI in order to understand their water-oil emulsion stabilization capability on a molecular level basis. Through (+) APPI it was possible to obtain an overview of samples composition. By sorting as nitrogen sulfur and oxygen containing compounds, it was possible to compositionally distinguish the asphaltenes. Through (-) ESI, several differences were also observed by grouping the classes as oxygen (NxOy+NxOySz+Oy+OySz) and non oxygen containing classes (Nx+NxSz). The interactions of these two groups of compounds must be considered in order to understand the water-oil emulsion stability. It implies that the cores where nitrogen and sulfur are part may interact via π-π stacking, while the oxygen containing compounds may interact either via hydrogen bonding or via dipole forces with the aromatic aggregates (highly polarizable), forming potentially surface active aggregates. Thus, the rate between these two families of compounds may determine the surfactant character of asphaltenes at the water-oil interface. Bearing this in mind, an emulsion stability coefficient was proposed based on the relative abundances of some families of compounds detected by (-) ESI-FTICR-MS to explain the crude oils’ tendency to form emulsions.
Estimation of Caving volumetric-flow using the ultrasonic Doppler method
Authors: Carvajal-Jiménez Jenny-Mabel
Published: January 2020

Estimating the volumetric flow of cuttings and cavings that are extracted and transported by the drilling mud into the flow line while drilling a well is of major interest to for drillers so that they can understand the drilling conditions and maintain the wellbore stability. In this paper, a new method to estimate the volumetric flow of cavings via the Doppler effect is proposed. The proposed method is a non-invasive method that uses two piezo-electric acoustic sensors located on the flow line, one acting as an emitter and the other acting as a receiver. The system device estimates cavings and cuttings by measuring the mud and solids flow on a real-time basis. Results obtained at a laboratory experimental level reflected a maximum volumetric-flow error of 10.5% for small-sized cavings and 34,7% for large-sized cavings. According to those results, the method may be suitable for estimating cavingvolumetric-flow with acoustical techniques at the flow line while drilling and it might be used as a real-time operation method to evaluate wellbore stability.
Techno-environmental assessment of a micro-cogeneration system based on natural gas for residential application
Authors: Colmenares-Quintero Ramón Fernando
Published: January 2020

The study carried out here aims to determine the advantage of using in-situ electricity generation facilities versus conventional generators, being evaluated from the environmental point of view. For this, an environmental analysis on the production of CO2 has been applied to two scenarios of electricity generation for a residential building in Medellin city (Colombia). The first one refers to La Sierra thermo-electric plant located in La Sierra, municipality of Puerto Nare, in the Antioquiashire, which is the most efficient plant in Colombian thermal generation. The second comparison scenario refers to the annual operation of a micro-cogeneration facility, which satisfies the building’s hot water and electrical energy needs. Using the capabilities of the TRNSYS v17® energy simulation software and the emission equations available in the public domain, the comparative environmental analysis is carried out between one and the other for the same load. The losses in electric transmission are assumed to be 10%. This analysis has shown a difference of more than 50% in emissions generation, with the main cause being the amount of fuel used, which for both cases is natural gas. On the other hand, this study shows the environmental advantages in the use of in-situ generators, decreasing transmission losses.
Students Self Regulated Learning in Numerical Methods Course using Computational Mathematics Teaching Materials
Authors: Baist Abdul , Fadillah Ahmad , Nopitasari Dian
Published: January 2020

Self regulated learning is a learning system applied in universities. Therefore, self regulated learning is needed by students in taking courses in college. Based on the results of previous studies found that students self regulated learning is still low. This study aims to improve students self regulated learning by using computational mathematics teaching materials in numerical method courses. The method used in this study is quasi-experimental with non-equivalent control group design. Result of this study shows that increasing students self regulated learning that using computational mathematics teaching materials is not better than students that not using the teaching materials.
PENGARUH MODEL PEMBELAJARAN INKUIRI TERBIMBING PADA PEMBELAJARAN FISIKA UNTUK MENINGKATKAN HASIL BELAJAR SISWA
Authors: Nurfarida Nurfarida , Bahtiar Bahtiar , Ernita Nevi
Published: January 2020

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran inkuiri terbimbing terhadap hasil belajar siswa fisika pada materi momentum dan impuls di SMA Negeri 8 Mataram Tahun Pelajaran 2018/2019. Teknik pengambilan sampel menggunakan Sluster Random Samling. Jenis penelitian yang digunakan adalah quasi eksperimental design dengan desain penelitian pretest-posttest control grup desain. Berdasarkan hasil analisis data dalam penelitian ini dengan menggunakan uji-t diperoleh ttabel = 2,021 dan thitung = 8,35, maka diketahui nilai thitung (8,35)  ttabel (2,021) dengan dk yang besarnya dk = n1 + n2 - 2 dengan taraf signifikansinya 5%. Karena thitung lebih besar dari ttabel pada taraf sisgnifikan 5% maka H0 ditolak dan Ha diterima. Hasil penelitian ini, menunjukkan bahwa secara signifikan terdapat pengaruh model pembelajaran inkuiri terbimbing pada peningkatkan hasil belajar fisika siswa pada materi momentum dan impuls di SMA Negeri 8 Mataram Tahun Pelajaran 2018/2019.
PENGARUH MODEL PROBLEM SOLVING MELALUI SIMULASI PhET UNTUK MENINGKATKAN KEMAMPUAN PEMAHAMAN KONSEP SISWA PADA MATERI FLUIDA DINAMIS
Authors: Sembiring Ramadhanty , Zahara Syarifah Rita , Fatmi Nuraini
Published: January 2020

Penelitian ini bertujuan untuk mengetahui apakah ada peningkatan pemahaman konsep siswa kelas XI terhadap pembelajaran fluida dinamis dengan menggunakan model Problem Solving melalui simulasi PhET. Jenis penelitian ini adalah quasi eksperimen dan desain penelitian ini adalah pretest-posttest control design group, dengan kelas XI MIPA 1 sebagai kelas kontrol dan XI MIPA 3 sebagai kelas eksperimen. Instrumen penelitian yang digunakan adalah tes kemampuan pemahaman konsep serta lembar kerja peserta didik. Hasil penelitian diolah dengan menggunakan aplikasi SPSS untuk mengetahui apakah data bersifat normal dan homogen atau tidak, serta untuk mengetahui ada tidaknya peningkatan kemampuan pemahaman konsep siswa setelah diberikan perlakuan. Hasil yang diperoleh adalah rata-rata kemampuan pemahaman konsep siswa kelas XI MIPA 3 lebih tinggi dibandingkan dengan kelas XI MIPA 1. Dengan demikian disimpulkan bahwa penggunaan model Problem Solving melalui simulasi PhET dapat meningkatkan kemampuan pemahaman konsep siswa pada mata pelajaran fisika kelas XI di SMA Negeri 1 Dewantara.
EKSTRAKSI KARAKTERISTIK WAJAH MANUSIA DENGAN TRANSFORMASI WARNA YCBCR
Authors: Effendi T. Rahmad , Fadillah Nurul
Published: January 2020

Kulit adalah organ terluar tubuh yang melapisi seluruh tubuh manusia dan dapat digunakan sebagai media informasi, seperti proses deteksi wajah, diagnosa medis dan lain-lain. Dalam deteksi kulit banyak dipengaruhi oleh beberapa faktor seperti cahaya, latar belakang, kesesuaian kamera dan sebagainya. Dalam penelitian ini, deteksi kulit menggunakan model warna YCbCr, dan pengkodean akan dilakukan menggunakan aplikasi Mathlab. Dalam hal ini, metode transformasi sistem ruang warna sebagai bagian dari pemrosesan gambar membantu dalam mendeteksi warna dalam gambar dan memprosesnya sehingga mudah untuk diidentifikasi. Sebelum deteksi kulit pada wajah dilakukan, pengenalan wajah dilakukan terlebih dahulu menggunakan ekstraksi fitur, ekstraksi fitur adalah proses untuk mengetahui lokasi wajah dalam sebuah gambar. Dalam penelitian ini menggunakan gambar yang diambil secara offline, dan hasil penelitian ini adalah Cr dan Cb, dan hasil terbaik ketika proses Binarisasi memiliki Cb = 75 dan Cr = 145.
PENENTUAN DEBIT ANDALAN DENGAN METODA FJ MOCK DI DAERAH ALIRAN SUNGAI CISADANE
Authors: Sudinda Teddy W
Published: January 2020

Prinsip metode Model FJ Mock menyatakan hujan yang jatuh pada daerah tangkapan air, sebagian akan hilang akibat evapotranspirasi, sebagian akan langsung menjadi direct runoff dan sebagian lagi akan masuk ke dalam tanah atau terjadi infiltrasi. Infiltrasi ini semula akan menjenuhkan permukaan tanah, kemudian terjadi perkolasi ke air tanah dan akan keluar sebagai base flow Hal ini terdapat keseimbangan antara air hujan yang jatuh dengan evapotranspirasi, direct runoff dan infiltrasi, dimana infiltrasi ini kemudian berupa soil moisture dan ground water discharge. Aliran dalam sungai adalah jumlah aliran yang langsung di permukaan tanah dan base flow. Curah hujan rata-rata bulanan di daerah pengaliran sungai dihitung berdasarkan data pengukuran curah hujan dan evapotranspirasi yang sebenarnya dari data meteorologi dengan menggunakan metode Penman dan karakteristik vegetasi. Perbedaan antara curah hujan dan evapotranspirasi mengakibatkan limpasan air hujan langsung (direct runoff), aliran dasar/air tanah dan limpasan air hujan lebat (storm runoff). Dengan metoda Model FJ Mock, dapat digunakan untuk menganalisa debit andalan untuk Daerah Aliran Sungai Cisadane. Kata kunci: Base Flow, Direct Runoff, Storm Runoff
UJI KINERJA PENGOLAHAN AIR LIMBAH INDUSTRI NATA DE COCO DENGAN PROSES LUMPUR AKTIF
Authors: Said Nusa Idaman , Widayat Wahyu
Published: January 2020

Industri Nata de Coco merupakan merupakan salah satu agroindustri yang dalam proses produksinya menghasilkan air limbah yang bersifat asam dan mengandung konsentrasi polutan organik yang tinggi, terutama air limbah yang berasal dari sisa fermentasi nata. Oleh karena itu, air limbah tersebut harus diolah dengan baik agar tidak mencemari lingkungan. Berdasarkan Peraturan Menteri Lingkungan Hidup Republik Indonesia Nomor 5 Tahun 2014 Tentang Baku Mutu Air Limbah, baku mutu air limbah industri Nata de Coco yang boleh dibuang ke badan air atau saluran umum yakni dengan konsentrasi maksimum COD 150 mg/l, BOD 75 mg/l, TSS 100 mg/l dan pH 6-9. Tujuan penelitian ini adalah melakukan uji kinerja pengolahan air limbah industri Nata de Coco yang berlokasi di Gunung Putri, Kabupaten Bogor, menggunakan proses lumpur aktif. Penelitian dilakukan mulai bulan Februari sampai dengan bulan April 2019. Dari hasil penelitian dapat diketahui bahwa air limbah industri Nata de Coco mempunyai pH yang rendah dengan konsentrasi zat organik (COD) yang tinggi, dapat mencapai lebih dari 5000 mg/l. Perbandingan BOD/COD air limbah berkisar 0,34 sehingga relatif sulit untuk terurai secara biologis. Untuk mengolahan air limbah industri Nata de Coco dengan menggunakan proses lumpur aktif, pH air perlu dinaikan menjadi sekitar 8 agar proses lumpur aktif berjalan optimal. Hasil penelitian menunjukkan bahwa dengan beban COD rata-rata 0,56 kg COD/m3.hari didapatkan efisiensi rata-rata penghilangan COD sebesar 95,7 %. Kata Kunci: Air Limbah, Nata de Coco, Lumpur Aktif
PERENCANAAN UNIT PRE-TREATMENT AIR LIMBAH INDUSTRI SPARE PART KENDARAAN BERMOTOR
Authors: Setiyono Setiyono
Published: January 2020

PT. Shei Tai Industrial, is one of the industries that produce motor vehicle spare parts such as the engine block. With these production activities, PT. Shei Tai Industrial will result in the production of domestic waste and waste that contains oil and chemicals (solvents) with a high enough concentration. The high levels of pollutant waste PT. Shei Tai Industrial, resulting in the waste industry cannot be accepted directly into the WWTP area, so PT. Shei Tai Industrial obliged to make a pre-treatment unit prior to the WWTP effluent channel region. For pre-treatment planning unit, PT. Shei Tai Industrial has teamed up with researchers from the Center for Environmental Technology to make planning pre-treatment unit design. This unit is planned by using physical-chemical process technology. Keywords: Waste Industry, Design of wastewater pre-treatment.
KONDISI OSEANOGRAFI DI SELAT MATAK KABUPATEN KEPULAUAN ANAMBAS MELALUI MODEL HIDRODINAMIKA
Authors: Riyadi Agung , Said Nusa Idaman , Santos Matih
Published: January 2020

This paper describes some of the general condition of the oceanographic parameters in the Strait Matak, Anambas Archipelago. The data flow is obtained by direct measurement by using a current meter types RCM-7. Simulation models using Mike 21. Mike flow pattern is divided into two seasons, namely west season (January) and the east season (August) and flow patterns ahead of the tide when the season is generally moving west to wards the south, it demonstrates the role of strong tidal influence the movement of waterin the study area. Flow velocity in the strait just before the tide on the west season reaches 1m/s.  Flow patterns at high tide on the west season looks still moving toward sthe south. The maximum flow velocity in the strait when the tide reaches 0.32 m/s, while the average speed in the area of the model is 0.12 m/s. Low tide towards the current pattern is still moving towards the south, it reinforces the notion that in addition to tidal windsare also very significant role in moving the flow, in this case that the current is moving toward the south. Flow velocity just before low tide reaches 0.85 m/s. Flow patterns at low tide shows the differences in the three previous conditions, the current in the strait to move out to the north toward the South China Sea. In condition slow tide, the tida lmore dominantly than the wind, this proved to even though the wind toward the south, the currents inthestraitis moving toward snorth along the tidal flow leading to the South China Sea. Flow velocity is quite varied location of modeling; flow velocity at low tide reaches 0.5m/s, with the average 0.15 m/s. Keywords: current and direction, wind, tide, model.
KAJIAN PENDAHULUAN SISTEM PEMANFAATAN AIR HUJAN
Authors: Indriatmoko Robertus Haryoto , Rahardjo Nugro
Published: January 2020

Rainwater is an abundant source of water, especially during the rainy season. But otherwise if it is not managed properly, it can lead to disasters, such as floods or landslides. Therefore it is very important to harness rainwater by doing the best way, ie by the rain harvesting and then infiltrating the water back into the ground. Many countries have shown good results in the use of rainwater for various purposes. Dominican Republic, Singapore, Japan, China, Thailand and Indonesia are 7 countries which have a lot of implementing rainwater utilization system very well. Rainwater can be used as a source of clean water to meet the drinking water needs. Artificial recharge for rain water lets the water goes to infiltrate back into the soil is a powerful effort to maintain and preserve the ground water potential. Besides, infiltration of rainwater into the soil also can prevent land subsidence. Because of the importance of rainwater management system, it should be included in the educational curriculum both for elementary to upper secondary level. Similarly, the obligation for proper implementation must also be supported by adequate rules or regulations. Keywords : Rainwater management, artificial recharge.
PENINGKATAN KINERJA IPAL LUMPUR AKTIF DENGAN PENAMBAHAN UNIT BIOFILTER (STUDI KASUS IPAL PASARAYA BLOK M, KAPASITAS 420 M3/HARI)
Authors: Ikbal Ikbal
Published: January 2020

WWTP system selection is determined by the characteristics of the waste water. Wrong WWTP system will cause quality of treated water difficult to meet the Quality Standard and also lead to high operating costs. Added Biofilter unit to Pasaraya Blok M WWTP system, provide very encouraging result. For more than one year, WWTP operation always in good performance. The concentration of BOD, COD and KMnO4 can be derived more than 90%, as well as TSS can be reduced over 90%. The concentration of all pollutants in treated water far below the government quality standards, so it’s not polluted to the environment. WWTP Pasaraya Blok M already has Liquid Waste Disposal License Certificate (IPLC), as a legal statement or certificate that allowed them to dispose of treatment water into the water body. Pasaraya Blok M also performs self-monitoring for operational of WWTP and periodic analysis to an accredited laboratory.  Keywords : domestic waste water, waste water treatment plants, organic pollutants, activated sludge, biofilter, treatment efficiency
ANALISIS PENGARUH KONFIGURASI CATENARY SPREAD MOORING PADA OPERABILITAS INSTALASI PIPA BAWAH LAUT
Authors: Asmajuna Helmi Arif , Murdjito Murdjito , Djatmiko Eko Budi
Published: January 2020

Aktivitas instalasi pipa bawah laut memerlukan tingkat keandalan yang tinggi agar tidak mengalami kegagalan. Maka dari itu banyak faktor harus dipertimbangkan saat proses desain sebelum kegiatan instalasi. Metode instalasi adalah salah satu faktor utama yang harus dipertimbangkan. Terkait dengan itu kajian tentang pengaruh konfigurasi penambatan terhadap tegangan pipa dan operabilitas pada saat instalasi pipa bawah laut menggunakan pipelay barge dengan fixed stinger telah dilakukan. Kajian meninjau 4 konfigurasi catenary spread mooring yang berbeda, yakni 4 tali, 8 tali, 6 tali (4 depan dan 2 belakang), dan 6 tali (2 depan dan 4 belakang) dengan dan tanpa pengaturan pretension. Dengan mempertim­bangkan tegangan yang terjadi, konfigurasi yang menggunakan pengaturan pretension akan lebih aman digunakan dan memenuhi kriteria DNV OSF-101 dan API RP2SK, di mana tegangan pipa maksimal yang terjadi 391.5 MPa dan mooring tension 730 kN. Selanjutnya, semua konfigurasi yang menggunakan pengaturan pretension memiliki nilai operabilitas mencapai 100%. Dari seluruh konfigurasi yang dievaluasi, konfigurasi 4 tali direkomendasikan untuk digunakan, dengan mem­pertimbangkan aspek tegangan yang terjadi, operabilitas, jumlah tali, serta waktu operasi dan biaya.
Política ambiental, despojo y movimientos socioambientales en el ámbito rural mexicano
Authors: Toscana Alejandra , Rodríguez Carlos , Nieves Mayra
Published: January 2020

En este artículo se analiza la relevancia del tema ambiental en la agenda pública mexicana y los movimientos socioambientales, sobre todo a partir de la intensificación del modelo extractivista en las zonas rurales del país. Esta situación ha incrementado los procesos de despojo —agua, tierra, bosques, minerales— que, a la vez, han potenciado una diversidad de respuestas y luchas de las comunidades rurales contra la minería, la construcción de presas, de infraestructura urbana y desarrollos turísticos.
La teoría de Karl Marx y otras teorías del valor: Utilidad, escasez y oferta y demanda
Authors: Guerrero Diego
Published: January 2020

En el artículo se compara la teoría laboral del valor desarrollada por Karl Marx con otras teorías del valor, haciéndolo de forma no exhaustiva, sino acotada a una selección de los conceptos más relevantes. El artículo se centra en tres de los conceptos que caracterizan a la teoría neoclásica del valor: la utilidad, la escasez y la interacción de la oferta y la demanda, concluyendo que las ideas de los críticos de la tlv no pueden servir para construir una alternativa a esta.
Pelatihan Penyusunan Penulisan Karya Ilmiah (PTK) di Yayasan Pondok Pesantren Darussalam Bermi Desa Babussalam Kecamatan Gerung Kabupaten Lombok Barat
Authors: Fahruddin Fahruddin , Sudirman Sudirman , Witono A Hari , Hakim Mansur
Published: January 2020

Pengabdian pada masyarakat pada kegiatan ini adalah memberikan wawasan pengetahuan tentang penulisan karya ilmiah PTK di Pondok pesantren Darussalam Bermi Desa Babussalam Kecamatan Gerung Kabupaten Lombok barat. Pelatihan pengabdian ini tujuannya adalah memberikan pelatihan dan mendampingi para guru dalam menulis karya ilmiah penelitian tindakan kelas secara benar dan mendampingi guru dalam prosedur penulisan karya ilmiah dalam jurnal. Metode yang digunakan dalam kegiatan pengabdian adalah metode ceramah, diskusi dan praktik. Metode ceramah untuk menyampaikan tentang penulisan karya ilmiah berbasis penelitian tindakan kelas dan prosedur penulisan karya ilmiah dalam jurnal. Sedangkan metode praktik untuk memberikan kesempatan berlatih kepada peserta untuk membuat laporan tulisan karya ilmiah untuk bisa di Publikasikan di jurnal. Hasil kegiatan pengabdian di pondok pesantren Darussalam Bermi menunjukkan bahwa guru-guru tersebut antusias dalam mengikuti kegiatan pelatihan penyusunan penulisan karya ilmiah (PTK), sehingga guru-guru yang ada di ponpes tersebut memiliki pengetahuan dan keterampilan dalam menyusun proposal dan juga bisa membuat draf karya ilmiah untuk bisa di publikasikan. Kata Kunci: Pelatihan; Penulisan Karya Ilmiah; Penelitian Tinddakan Kelas (PTK).
Penyuluhan Mengenai Pola Makan Sehat dan Seimbang untuk Pencegahan Anemia Pada Kader Posyandu Di Puskesmas Nipah, Kabupaten Lombok Utara
Authors: Cholidah Rifana , Widiastuti Ida Ayu Eka , Lestarini Ima Arum
Published: January 2020

Abstrak: Pengabdian ini bertujuan meningkatkan pengetahuan kader mengenai pola makan sehat dan seimbang untuk pencegahan anemia pada kader posyandu di Puskesmas Nipah, Kabupaten Lombok Utara. Metode pelaksanaan pengabdian ini meliputi penyuluhan mengenai pola makan sehat dan seimbang untuk pencegahan anemia pada kader posyandu di Puskesmas Nipah, Desa Malaka, Kecamatan Pemenang, Kabupaten Lombok Utara. Penyuluhan disampaikan melalui metode ceramah dan diskusi. Pemateri adalah tim pengabdian masyarakat dari FK Unram beserta 1 orang mahasiswa mahasiswa semester 7. Setelah pengetahuan kader meningkat maka dilakukan evaluasi penerapan hasil penyuluhan berupa tindakan para kader posyandu untuk menyampaikannya kepada masyarakat, terutama pada ibu yang memiliki anak usia sekolah dan juga pada ibu hamil dan menyusui. Pada kegiatan ini disimpulkan anemia defisiensi besi adalah salah satu kelainan akibat kekurangan zat gizi besi yang dapat terjadi baik di negara maju maupun negara berkembang. Kader Posyandu mempunyai peran yang penting sebagai penyuluh dan fasilitator di lapangan yang berinteraksi langsung dengan masyarakat sekitar khususnya para ibu hamil, menyusui dan ibu yang memiliki anak usia sekolah. Penyuluhan mengenai pola makan sehat dan seimbang untuk pencegahan anemia adalah salah satu cara pencegahan anemia dengan cara peningkatan pengetahuan kader posyandu tentang gejala awal anemia, sumber-sumber makanan yang kaya akan zat besi dan penerapan pola makan sehat dan seimbang. Kata Kunci: Penyuluhan; Pola Makan Sehat dan Seimbang; Pencegahan Anemia
Determining The Shortest Path Between Terminal and Airport in Yogyakarta Using Trans Jogja with Min Plus Algorithm
Authors: Susilowati Eka , Fitriani Fenny
Published: January 2020

Route arrangement is an important factor to be considered so that areas in Yogyakarta city can be reached by Trans Jogja bus. One of the routes to consider is the route that connects between the terminal and the airport in Yogyakarta. Jombor terminal, Giwangan terminal, Condong Catur terminal, and Prambanan terminal are terminals in Yogyakarta. In this paper, we discussed the shortest path between the terminal and Adisucipto Airport with the estimated minimum travel time using Trans Jogja bus. Determination of this route is searched by using min plus algorithm. The shortest trajectory presented is the trajectory between Giwangan and Condong Catur terminal, Condong Catur and Prambanan terminal, and Adisucipto Airport and Jombor terminal. This paper is limited to the passage of Trans Jogja bus stop.
FACTORS AFFECTING INNOVATIVE TECHNOLOGIES ADOPTION BY LIVESTOCK HOLDERS IN ARID AREA OF TUNISIA
Authors: Dhraief Mohamed Zied , Bedhiaf Sonia , Dhehibi Boubaker , Oueslati-Zlaoui Meriem , Jebali Oussama , Ben-Youssef Salah
Published: January 2020

Despite the efforts to enhance adoption of innovative technologies (IT) by the Tunisian Government through national and/or international development projects, the potential rate of adoption of these technologies has remained low among farmers. This study aims at shedding some light on the potential factors that influence IT adoption in the Tunisian arid areas. Technological, economic, institutional factors and human specific factors (social) are selected to be the determinants of agricultural technology adoption. A quantitative approach employing a cross-sectional design was used to gather data. Stratified random sampling was employed and a total of 200 small-scale farmers (100 adopters and 100 non-adopters) were sampled. Data analysis and assessment was done through descriptive and statistical inferential analysis, and econometric modeling using the binary logistic regression model.

Empirical findings show that economic and socio-demographic factors such as farmer education, size of cattle flocks and off-farm income were statistically significant and had positive influence on technology adoption while age and farmer experience had significant and negative effects on IT adoption. The findings confirm the important role of institutional factors (being a member of an association, benefiting from extension services and source of technology knowledge) in the adoption decision of IT, particularly when such variables were found to be significant and positives. In contrast, labor and credit services do not significantly influence adoption of IT. Based on these results, Government should focus on educating young farmers with large cattle flock size and off-farm income to enhance the adoption of IT for livestock holders. It should also intensify training programs for farmers and for extension agents with the collaboration of the project managers and the involvement of the profession and the private sector. Finally, the open innovation strategy including all stakeholders during idea generation could be considered as a better way to decrease technology development costs and improve IT adoption.