bluuebunny/crossref_metadata_2025 huggingface dataset:
Recycling Aggregates for Self-Compacting Concrete Production: A Feasible Option
Authors: Martínez-García Rebeca , Guerra-Romero M. Ignacio , Morán-del Pozo Julia M. , Brito Jorge de , Juan-Valdés Andrés
Published: February 2020

The use of construction and demolition wastes (C&DW) is a trending future option for the sustainability of construction. In this context, a number of works deal with the use of recycled concrete aggregates to produce concrete for structural and non-structural purposes. Nowadays, an important number of C&DW management plants in the European Union (EU) and other countries have developed robust protocols to obtain high-quality coarse recycled aggregates that comply with different European standards in order to be used to produce new concrete. The development of self-compacting concrete (SCC) is another way to boost the sustainability of construction, due to the important reduction of energy employed. Using recycled aggregates is a relatively recent scientific area, however, studies on this material in the manufacture of self-compacting concrete have proven the feasibility thereof for conventional structural elements as well as high-performance and complex structural elements, densely reinforced structures, difficult-to-access formwork and difficult-to-vibrate elements. This paper presents an original study on the use of coarse recycled concrete aggregate (CRA) to obtain self-compacting concrete. Concrete with substitution ratios of 20%, 50% and 100% are compared with a control concrete. The purpose of this comparison is to check the influence of CRA on fresh SCC as well as its physical and mechanical properties. The parameters studied are material characterization, self-compactability, compressive strength, and tensile and flexural strength of the resulting concrete. The results conclude that it is feasible to use CRA for SCC production with minimal losses in the characteristics.
Enhancing the Sensitivity of Nanoplasmonic Thin Films for Ethanol Vapor Detection
Authors: Rodrigues Marco S. , Borges Joel , Vaz Filipe
Published: February 2020

Nanoplasmonic thin films, composed of noble metal nanoparticles (gold) embedded in an oxide matrix, have been a subject of considerable interest for Localized Surface Plasmon Resonance (LSPR) sensing. Ethanol is one of the promising materials for fuel cells, and there is an urgent need of a new generation of safe optical sensors for its detection. In this work, we propose the development of sensitive plasmonic platforms to detect molecular analytes (ethanol) through changes of the LSPR band. The thin films were deposited by sputtering followed by a heat treatment to promote the growth of the gold nanoparticles. To enhance the sensitivity of the thin films and the signal-to-noise ratio (SNR) of the transmittance–LSPR sensing system, physical plasma etching was used, resulting in a six-fold increase of the exposed gold nanoparticle area. The transmittance signal at the LSPR peak position increased nine-fold after plasma treatment, and the quality of the signal increased six times (SNR up to 16.5). The optimized thin films seem to be promising candidates to be used for ethanol vapor detection. This conclusion is based not only on the current sensitivity response but also on its enhancement resulting from the optimization routines of thin films’ architectures, which are still under investigation.
The Distribution of Li Ions in the Oxide Film Formed on Zircaloy-4 Corroded in Lithiated Water at 633 K
Authors: Xie Shijing , Zhou Bangxin , Liang Xue , Li Qiang , Liu Wenqing , Yao Meiyi , Zhang Jinlong
Published: February 2020

Transmission electron microscopy (TEM), second ion mass spectrum (SIMS) and atom probe tomography (APT) techniques are used to study the Li ion distribution in the oxide formed on the rolling surface (SN) of Zircaloy-4 corroded in lithiated water with 0.01 M LiOH at 633 K/18.6 MPa. The results showed that the Li ions segregated in the grain boundaries and subgrain boundaries in the oxide film, but nearly no Li ions were found in the oxide around the interface between the oxide and matrix. Finally, we discussed the mechanism of the LiOH influence on the corrosion resistance of Zircaloy-4.
Very High Cycle Fatigue (VHCF) Characteristics of Carbon Fiber Reinforced Plastics (CFRP) under Ultrasonic Loading
Authors: Cui Wenbin , Chen Xuan , Chen Chao , Cheng Li , Ding Junliang , Zhang Hui
Published: February 2020

A liquid nitrogen cooling system was developed to ensure the successful ultrasonic testing of composite materials to characterize the very High Cycle Fatigue (VHCF) of carbon fiber reinforced plastics (CFRP). The fatigue failure of CFRP occurs even in the very high cycle range and there is no traditional fatigue limit. The S–N curve of the CFRP presents a step whose characteristics appear in the transition between high cycle and very high cycle fatigue. The damage evolution of CFRP in the same field of view is investigated. The morphology of damaged CFRP composites under ultrasonic loading is described by three characteristics: matrix damage at the intersection of fiber bundles, near fiber bundle parallel section matrix cavity and matrix penetration. With the increasing of cycles, the damage process is also presented in turn according to these three characteristics. The post-fatigue bending modulus changed significantly from the pre-fatigue values, indicating that the VHCF had a considerable impact on the mechanical properties of the composite. An evolution threshold was introduced from the S–N curve to determine the fatigue evolution law from the high cycle regime to the very high cycle regime.
CFRP Thin-Ply Fibre Metal Laminates: Influences of Ply Thickness and Metal Layers on Open Hole Tension and Compression Properties
Authors: Kötter Benedikt , Karsten Julian , Körbelin Johann , Fiedler Bodo
Published: February 2020

Thin-ply laminates exhibit a higher degree of freedom in design and altered failure behaviour, and therefore, an increased strength for unnotched laminates in comparison to thick-ply laminates. For notched laminates, the static strength is strongly decreased; this is caused by a lack of stress relaxation through damage, which leads to a higher stress concentration and premature, brittle failure. To overcome this behaviour and to use the advantage of thin-ply laminates in areas with high stress concentrations, we have investigated thin-ply hybrid laminates with different metal volume fractions. Open hole tensile (OHT) and open hole compression (OHC) tests were performed with quasi-isotropic carbon fibre reinforced plastic (CFRP) specimens. In the area of stress concentration, 90° layers were locally substituted by stainless steel layers of differing volume fractions, from 12.5% to 25%. The strain field on the specimen surface was evaluated in-situ using a digital image correlation (DIC) system. The embedding of stainless steel foils in thin-ply samples increases the OHT strength up to 60.44% compared to unmodified thin-ply laminates. The density specific OHT strength is increased by 33%. Thick-ply specimens achieve an OHC strength increase up to 45.7%, which corresponds to an increase in density specific strength of 32.4%.
Characterizing Complete Fuzzy Metric Spaces Via Fixed Point Results
Authors: Romaguera Salvador , Tirado Pedro
Published: February 2020

With the help of C-contractions having a fixed point, we obtain a characterization of complete fuzzy metric spaces, in the sense of Kramosil and Michalek, that extends the classical theorem of H. Hu (see “Am. Math. Month. 1967, 74, 436–437”) that a metric space is complete if and only if any Banach contraction on any of its closed subsets has a fixed point. We apply our main result to deduce that a well-known fixed point theorem due to D. Mihet (see “Fixed Point Theory 2005, 6, 71–78”) also allows us to characterize the fuzzy metric completeness.
An Innovative Public–Private Mix Model for Improving Tuberculosis Care in Vietnam: How Well Are We Doing?
Authors: Do Thu Thuong , Kumar Ajay , Ramaswamy Gomathi , Htun Thurain , Le Van Hoi , Nguyen Quang Vo Luan , Thi Thu Dong Thuy , Codlin Andrew , Forse Rachel , Crewsell Jacob , Nguyen Thanh Hoi , Nguyen Viet Hai , Bui Van Huy , Nguyen Binh Hoa , Nguyen Viet Nhung
Published: February 2020

To improve tuberculosis (TB) care among individuals attending a private tertiary care hospital in Vietnam, an innovative private sector engagement model was implemented from June to December 2018. This included: (i) Active facility-based screening of all adults for TB symptoms (and chest x-ray (CXR) for those with symptoms) by trained and incentivized providers, with on-site diagnostic testing or transport of sputum samples, (ii) a mobile application to reduce dropout in the care cascade and (iii) enhanced follow-up care by community health workers. We conducted a cohort study using project and routine surveillance data for evaluation. Among 52,078 attendees, 368 (0.7%) had symptoms suggestive of TB and abnormalities on CXR. Among them, 299 (81%) were tested and 103 (34.4%) were diagnosed with TB. In addition, 195 individuals with normal CXR were indicated for TB testing by attending clinicians, of whom, seven were diagnosed with TB. Of the 110 TB patients diagnosed, 104 (95%) were initiated on treatment and 97 (93%) had a successful treatment outcome. Given the success of this model, the National TB Programme is considering to scale it up nationwide after undertaking a detailed cost-effectiveness analysis.
Can the High Sensitivity of Xpert MTB/RIF Ultra Be Harnessed to Save Cartridge Costs? Results from a Pooled Sputum Evaluation in Cambodia
Authors: Chry Monyrath , Smelyanskaya Marina , Ky Mom , Codlin Andrew J , Cazabon Danielle , Tan Eang Mao , Creswell Jacob
Published: February 2020

Despite the World Health Organization recommending the use of rapid molecular tests for diagnosing tuberculosis (TB), uptake has been limited, partially due to high cartridge costs. Other infectious disease programs pool specimens to save on diagnostic test costs. We tested a sputum pooling strategy as part of a TB case finding program using Xpert MTB/RIF Ultra (Ultra). All persons were tested with Ultra individually, and their remaining specimens were also grouped with 3–4 samples for testing in a pooled sample. Individual and pooled testing results were compared to see if people with TB would have been missed when using pooling. We assessed the potential cost and time savings which different pooling strategies could achieve. We tested 584 individual samples and also grouped them in 153 pools for testing separately. Individual testing identified 91 (15.6%) people with positive Ultra results. One hundred percent of individual positive results were also found to be positive by the pooling strategy. Pooling would have saved 27% of cartridge and processing time. Our results are the first to use Ultra in a pooled approach for TB, and demonstrate feasibility in field conditions. Pooling did not miss any TB cases and can save time and money. The impact of pooling is only realized when yield is low.
Clinical Sciences—Leading the Way in Competency-Based Biomedical Education
Authors: Brown Mark A. , Alshiraihi Ilham , Hassell Kelly , Lanning Shari
Published: February 2020

For decades, educators in the clinical sciences have been at the forefront of innovations in educational practices related to science and medicine. Ultimately, such innovations are often translated and implemented as best practices across the breadth of biomedical disciplines. Far from novel, competency-based approaches to higher education have been around since the 1960s. These have their origins in student outcomes-based models that focus on the assessment of demonstrated competencies through students’ applications of theory, learned in the classroom, to perform a task and/or resolve a defined issue or problem. Despite its long history of contributing to human medical education and, more recently, veterinary medical education, competency-based instruction is still rare in undergraduate biomedical education. Herein, we discuss the value of clinical education in leading the way toward competency-based, undergraduate biomedical programs.
SIMULASI PERANCANGAN BEJANA TEKAN DENGAN MENGGUNAKAN METODE BEDA HINGGA
Authors: Rainarli Ednawati
Published: February 2020

Salah satu metode numerik yang digunakanuntuk menyelesaikan persamaan diferensial biasaadalah metode beda hingga, dalam paper inidiberikan simulasi penerapan metode tersebut untukmenyelesaikan masalah nilai batas kususnya untukmengukur besar defleksi dari bejana tekan.Diberikan pula perbandingan galat dari dua caraperhitungan metode beda hingga yaitu fowarddifference dan center difference. Hasilnyamenunjukkan bahwa perhitungan dengan cara centerdifference lebih baik dibandingkan dengan fowarddifference.
PEMBANGUNAN GAME FIRST PERSON SHOOTER 3D ALIEN HUNTER
Authors: Widiastuti Nelly Indriani , Meisadri Refi
Published: February 2020

Game First Person Shooter (FPS) adalah game perang dengan senjata api yang menggunakan sudut pandang orang pertama dengan tampilan layar yang mensimulasikan apa yang dilihat melalui mata karakter yang dimainkan. Z-Virus merupakan game FPS yang dibuat menggunakan Blender Game Engine (BEG). Game Z-Virus memiliki kelemahan berupa Non-Player Character (NPC) musuh yang hanya bisa tidak memiliki kemampuan untuk memilih tindakan yang akan dilakukan sesuai dengan kondisi NPC saat itu.Penelitian ini bertujuan untuk membangun game FPS yang menarik dengan memberikan kecerdasan kepada NPC musuh untuk memutuskan opsi menyerang, bertahan ataupun melarikan diri. Aplikasi game ini menggunakan pemodelan berorientasi objekdan dibangun menggunakan unity 3d game engine serta menggunakan AlgoritmaA* (A Star) untuk pencarian jalan pada NPC dan Logika Fuzy (Fuzzy Logic) untuk pemilihan keputusan pergerakan NPC. Game ini berbasis desktop dan hanya dapat digunakan dengan sistem operasi windows xp keatas.Tahap pengujian yang dilakukan terdiri dari pengujian alpha berupa pengujian blackbox dan pengujian white box kemudian dilanjutkan dengan pengujian beta menggunakan kuesioner. Berdasarkan hasil pengujian yang telah dilakukan dapat disimpulkan bahwa dengan menerapkan algoritma A Star dan Fuzzy Logic pada NPC musuh dapat membuat NPC musuh lebih sulit dikalahkan dan membuat game lebih menarik dan menantang untuk dimainkan.
MODEL INTERFACE UNTUK SITUS PEMERINTAHAN (E-GOVERNMENT
Authors: Istiqomah Istiqomah
Published: February 2020

E-government atau yang lebih dikenal dengan e-gov adalah penggunaan teknologi informasi oleh pemerintah untuk memberikan informasi dan pelayanan bagi warganya, urusan bisnis, serta hal-hal lain yang berkenaan dengan pemerintahan. Berdasarkan hasil penelitian, saat ini e-gov masih belum berjalan secara maksimal karena masih terdapat beberapa kekurangan, diantaranya yaitu e-gov yang ada saat ini kurang memenuhi fungsionalitas-fungsionalitas yang dibutuhkan oleh penggunanya.Oleh karena itu, dibuatlah penelitian ini untuk membantu lembaga pemerintahan dalam menyediakan fungsionalitas yang dibutuhkan oleh situs pemerintahan (e-gov). Penelitian ini dilakukan dengan menyebarkan kuesioner kepada beberapa responden. Lalu, dari hasil kuesioner tersebut dihitung dengan menggunakan metode kano. Metode kano adalah metode yang digunakan untuk menentukan fungsionalitas terhadap setiap daftar kebutuhan yang dibuat sedetail mungkin untuk lebih memahami persyaratan apa yang benar-benar perlu ada dalam produk atau layanan akhir. Penelitian ini menggunakan pendekatan berbasis terstuktur.
SISTEM PENDUKUNG KEPUTUSAN REVITALISASI TERHADAP BANGUNAN DAN KAWASAN CAGAR BUDAYA KOTA BANDUNG DI DISBUDPAR KOTA BANDUNG
Authors: Prabowo Syahrani Dhimas , Setiawan Eko Budi
Published: February 2020

Pendekatan revitalisasi cagar budaya harusmampu mengenali dan memanfaatkan pula potensiyang ada di lingkungan sekitar seperti sejarah,makna, serta keunikan dan citra lokasi. Masihkurang akuratnya mekanisme dalam perhitungannilai dari setiap kriteria masing-masing bangunandan kawasan cagar budaya menyulitkan petugasdalam menentukan prioritas revitalisasi, sehinggamenimbulkan kurang optimalnya tindakanrevitalisasi yang dilakukan. Analisis cagar budayamemanfaatkan Metode Analytical HierarchyProcess (AHP) sebagai metode dari SistemPendukung Keputusan (SPK) dalam proses analisisdata cagar budaya yang menggunakan beberapakriteria (multikriteria) untuk memilih prioritasrevitalisasi cagar budaya yang tepat. AHP digunakansebagai model untuk pembobotan multiktiteriadalam proses pemilihan prioritas revitalisasi.Berdasarkan hasil pengujian yang telah dilakukandapat disimpulkan bahwa aplikasi ini dapatmembantu petugas dalam pengolahan data cagarbudaya, mempercepat waktu analisis cagar budaya,memudahkan proses pengambilan keputusanprioritas revitalisasi cagar budaya Kota Bandungserta mampu mengoptimalkan tindakan revitalisasiyang dilakukan.
PEMBANGUNAN SISTEM PENDUKUNG KEPUTUSAN REKRUTMEN PEGAWAI BARU DI PT. ABC
Authors: Herdiyanti Astri , Widianti Utami Dewi
Published: February 2020

PT. ABC adalah perusahaan yang bergerak dibidang penyedia barang dan jasa. Adanya perbedaankriteria pegawai pada masing-masing klien membuatperusahaan kesulitan dalam menentukan pegawaiyang tepat dan menyelesaikan proses rekrutmentepat waktu. Oleh karena itu dibangunlah sistempendukung keputusan sebagai solusi daripermasalahan tersebut. Sistem yang dibangungmenggunakan metode Analitycal Hierarchy Process(AHP). Metode ini memberikan prioritas pilihan daribanyak kriteria dan alternatif penilaian. Toolspengembangan perangkat lunak pada sistem inimenggunakan Data Flow Diagram (DFD) untukmenggambarkan model fungsional dan EntityRelationship Diagram (ERD) untuk menggambarpemodelan aliran data dan informasi serta flowmapuntuk menggambar sistem yang sedang berjalan.Berdasarkan hasil pengujian alpha yangmenggunakan Black Box dan pengujian Bethadengan metode wawancara diperoleh hasil bahwaaplikasi ini memudahkan dalam menentukanpegawai sesuai kriteria masng-masing klien danproses rekrutmen berjalan lebih baik karena dapatdiselesaikan lebih cepat
RENCANA STRATEGIS SISTEM DAN TEKNOLOGI INFORMASI DALAM USULAN RENCANA PEMBANGUNAN JANGKA MENENGAH DAERAH DI BAPPEDA KABUPATEN SUBANG
Authors: Hirawan Dedeng
Published: February 2020

Pelaksanaan program e-government yang dicanangkan pemerintah pusat merupakan salah satu faktor penting dalam terciptanya tata kelola pemerintahan yang baik (good governance). Hal ini bisa terwujud jika dalam pelaksanaannya mengacu pada tata kelola sistem dan teknologi informasi (IS/IT governance) yang baik pula. Mulai dari tahap perencanaan (planning), pelaksanaan (implementation), hingga pengawasan (monitoring). Dalam merumuskan rencana strategis sistem dan teknologi informasi seharusnya disesuaikan dengan visi dan misi pemerintah daerah, hal ini dimaksudkan agar dalam pengembangan sistem informasi menjadi tepat sasaran dan sesuai dengan arah pembangunan pemerintah Kabupaten Subang. Selain itu, rencana strategis sistem dan teknologi informasi ini diharapkan dapat digunakan sebagai pendekatan ilmiah (teknokratik) dalam penyusunan rencana pembangunan jangka menengah daerah (RPMD) oleh Bappeda selaku badan yang mempunyai tugas dalam penyusunan rencana pembangunan di Kabupaten Subang. Tahapan yang dilakukan dalam penelitian ini yaitu dengan menganalisa penerapan sistem yang telah berjalan saat ini (existing) dengan menggunakan tools domain plan and organize (PO) COBIT versi 4.1. Kemudian dilakukan perumusan rencana strategis dengan mempertimbangkan faktor eksternal dengan menggunakan analisa PEST (Political, Economic, Social-Culture, and Technology). Tahapan yang terakhir yaitu berupa rekomendasi dengan memetakan sistem informasi yang dibutuhkan dalam bentuk aplikasi portfolio Mc.Farlan, serta arahan arsitektur aplikasi dan implementasi rencana strategis untuk jangka waktu lima tahun.
PENERAPAN IMPROVED APRIORI PADA APLIKASI DATA MINING DI PERUSAHAAN KALVIN SOCKS PRODUCTION
Authors: Septiana Yepi , Dharmayanti Dian
Published: February 2020

Algoritma apriori merupakan algoritma klasik yang sering digunakan. Kekurangan yang ada pada algoritma apriori adalah harus melakukan scanning berulang terhadap keseluruhan database tiap kali iterasi. Semakin banyak data transaksi yang akan diproses maka semakin lama juga waktu yang dibutuhkan. Kalvin Socks Production merupakan salah satu perusahaan yang menggunakan teknologi data mining dengan algoritma apriori untuk mencari pola pembelian dari para pelanggannya. Banyaknya data transaksi penjualan mengakibatkan proses dalam pencarian pola pembelian membutuhkan waktu yang cukup lama. Improved apriori mempresentasikan database ke dalam bentuk matrix untuk menggambarkan relasi dalam database. Kemudian matrix dihitung untuk mencari nilai support dari candidate frequent itemset yang memenuhi kriteria untuk menghasilkan frequent itemset tanpa melakukan scanning ulang terhadap database. Salah satu cara untuk mengatasi masalah yang ada pada algoritma apriori adalah dengan menggunakan algoritma improved apriori.
UPAYA PENINGKATAN KAPABILITAS ANALISIS DATA PENERBANGAN DENGAN PELATIHAN BERBASIS KOMPUTER
Authors: Atmawijaya Aji Jatmika , Ardhiyanto Wahyu
Published: February 2020

Perekam data penerbangan merupakan peralatan yang penting dan harus terpasang pada pesawat udara sebagaimana diatur dalam peraturan keselamatan penerbangan sipil. Untuk menghasilkan informasi yang bermanfaat, data mentah yang diunduh dari alat ini harus dibaca oleh perangkat lunak untuk analisis data penerbangan yang juga akan melakukan konversi dari data biner menjadi data dengan satuan teknik yang dapat ditampilkan dalam bentuk data grafik dan tabel. Perangkat lunak analisis penerbangan ini merupakan perangkat penting bagi para analis dalam melakukan analisis terhadap data grafik dan tabel yang dihasilkan. Kepiawaian menggunakan perangkat lunak ini merupakan salah satu kapabilitas yang harus dimiliki analis data penerbangan. Makalah ini mengemukakan pengembangan paket pelatihan berbasis komputer untuk penggunaan perangkat lunak analisis data penerbangan yang dapat dimanfaatkan oleh para analis terutama analis baru untuk meningkatkan kapabilitasnya.
PENERAPAN DIGITAL SIGNATURE DAN KRIPTOGRAFI PADA OTENTIKASI SERTIFIKAT TANAH DIGITAL
Authors: Prabowo Egi Cahyo , Afrianto Irawan
Published: February 2020

Digital signature merupakan suatu teknologi digital yang dapat disipkan pada suatu dokumen untuk menjaga otentifikasinya. Peneltian ini tertujuan menerapkan digital signature untuk menguji keutuhan dan otentikasi dokumen sertifikat tanah digital, serta dapat mendeteksi perubahan dokumen sertifikat tanah digital dari hasil manipulasi oleh orang yang tidak berhak. Salah satu cara untuk melakukan digital signature pada dokumen sertifikat tanah digital yaitu dengan menggunakan fungsi hash. Algoritma hash yang digunakan dalam penelitian adalah Secure Hash Algorithm-256 (SHA-256), sedangkan algoritma kunci publik yang digunakan adalah algoritma Rivest-Shamir-Adleman (RSA). Berdasarkan hasil pengujian yang telah dilakukan, dapat disimpulkan bahwa mengimplementasikan digital signature menggunakan fungsi hash algoritma SHA-256 dan algoritma RSA dapat memberikan layanan keamanan otentikasi dokumen pada sertifikat tanah digital sehingga dapat mencegah terjadinya pemalsuan dan manipulasi dokumen oleh orang yang tidak berhak
Kë’m ëy jujkyäjtën. La Universidad Comunal Ayuujk
Authors: Martínez T. M. Elena , Jiménez D. Natalia , Vásquez G. Rigoberto
Published: February 2020

Este trabajo busca contribuir a los debates analíticos y prácticos de lo intercultural desde la experiencia de la Universidad Comunal que es planeada por la comunidad ayuujk de Tlahuitoltepec, desde la vida organizativa comunitaria que atraviesa el sistema de cargos, la construcción de autoridad y toma de decisiones para construir un modelo educativo que afectará a la vida de las personas y sus territorios. El análisis está hecho desde nuestra posición como colaboradores en el ejercicio académico y de gestión de la universidad, como profesionistas de la comunidad y desde nuestra preocupación por la educación colonial. Abordamos el el jää’wen jotmay, como metodología de investigación desde el sentir, pensar–hacer, por lo que la apuesta es por el reconocimiento del sistema de conocimiento ayuujk, sus enunciados fuerza, sus aspectos metodológicos y su anclaje práctico. Más allá de lo local, la apuesta es a la construcción de pensamientos y ejercicios por lo común.
Notas acerca de los sentidos del fracaso escolar
Authors: Lucero Cristian , Viamonte Leme Lourdes
Published: February 2020

Notas acerca de los sentidos del fracaso escolar es un ensayo que, como su nombre lo indica, está compuesto por algunas notas en las que se propone revisar de qué manera y desde qué posición teórica e ideológica se ha analizado la situación del fracaso escolar en América Latina.En su desarrollo se reconsideran las bases sobre las cuales se estableció el proyecto educativo de la modernidad y su relación con las distintas culturas y la forma en la que se procesaron dentro de la escuela.Otra de las notas desarrolla una mirada acerca de que manera la igualdad educativa derivó en diversidad y como la concepción, que en la Argentina se tiene este concepto, genera una clausura de las oportunidades de inclusión social.Durante el trabajo se hace expresa referencia a las teorías que miran al fracaso colocando el acento en el sujeto y a aquellas que lo hacen en el proceso socio histórico que genera el fracaso. Finalmente, se ensaya una relación entre los resultados que obtienen los estudiantes en las evaluaciones nacionales (para el caso argentino) e internacionales y el rol de las políticas en la generación del fracaso escolar.
O currículo da Educação Física como espaço de participação coletiva e reconhecimento da cultura corporal da comunidade
Authors: Lima Maria Emilia de , Garcia Neira Marcos
Published: February 2020

Esta investigação teve por objetivos elaborar e experimentar uma proposta de Educação Física a partir das finalidades explícitas no Projeto Político-pedagógico de uma escola municipal; analisar criticamente seu encaminhamento e discutir os resultados tanto no que concerne à ação pedagógica empreendida quanto ao percurso formativo da professora colaboradora. Para tanto, foi desenvolvida uma pesquisa-ação colaborativa, cujo foco principal recaiu sobre a observação e reconstrução constantes da prática pedagógica e modificações da ação didática. A análise dos resultados obtidos apontou como descoberta relevante a compreensão de que a inserção da Educação Física no Projeto Político-pedagógico da escola requer o alinhamento do currículo do componente com as finalidades institucionais, o reconhecimento da realidade escolar e de seu entorno e a adoção do diálogo como recurso de intervenção. Adotada essa postura, foi constatado que a intervenção colaborativa desencadeou modificações na prática pedagógica, na postura dos alunos, na professora-colaboradora e na pesquisadora.
Analisis Perbandingan Metode TAM dan UTAUT dalam Mengukur Kesuksesan Penggunaan Aplikasi Ojek Online
Authors: Indriyanti Indriyanti , Wahyuni Tri , Ermawati Erni , Ichsan Nurul , Fatah Haerul
Published: February 2020

Berkembangnya teknologi informasi memberikan pengaruh yang cukup bagi masyarakat, tetapi terkadang ada beberapa teknologi yang kurang diterima oleh masyarakat karena beberapa faktor. Penelitian ini bertujuan untuk menganalisis rasio metode TAM dan UTAUT dalam mengukur keberhasilan penggunaan aplikasi Ojek Online di Sleman, Yogyakarta. Metode yang paling banyak digunakan untuk menganalisis keberhasilan penggunaan teknologi adalah metode TAM dan UTAUT. Metode TAM dan UTAUT juga merupakan metode terbaik karena mampu menjelaskan perilaku pengguna terhadap penggunaan teknologi. Responden dalam penelitian ini adalah pengguna aplikasi Ojek Online di Kabupaten Sleman di Yogyakarta yang terdiri dari siswa dan masyarakat umum. Responden dalam penelitian ini diambil secara acak dari seluruh populasi. Data yang dikumpulkan diolah menggunakan SPSS agar mudah dianalisis lebih lanjut. Metode yang digunakan adalah metode korelasional. Hasil dari penelitian ini adalah bahwa metode TAM dan UTAUT mampu menganalisis penerimaan aplikasi Ojek Online meskipun nilai beberapa konstruk yang digunakan dalam penelitian ini hanya mempengaruhi penggunaan aktual sebesar 8% dan 5,2%.
Tuning radiative heat flows between interior surfaces and human occupants to improve heating and cooling efficiency
Authors: Raman Aaswath , Xu Jin
Published: February 2020

Space heating and cooling in buildings account for nearly 20% of energy use globally. In most buildings this energy is used to maintain the thermal comfort of the building’s human occupants by maintaining the interior air temperature at a particular set point. However, if one could maintain the human occupant’s thermal comfort while decreasing the heating or increasing the cooling set point, dramatic energy savings are possible. Here, we propose and evaluate an untapped degree of freedom in improving building efficiency: dynamically tuning the thermal emissivity of interior building surfaces at long-wave infrared wavelengths to maintain thermal comfort. We show that in cold weather conditions tuning the emissivity of interior walls, floors and ceilings to a low value (0.1) can decrease the set point temperature as much as 7°C, corresponding to an energy saving of nearly 67.7% relative to high emissivity materials (0.9). Conversely, in warm weather, high emissivity interior surfaces result in a 38.5% energy savings relative to low emissivity surfaces, highlighting the need for tunability for maximal year-round efficiency. Our results reveal the remarkable energy savings potential possible by better controlling the ubiquitous flows of heat that surround us in the form of thermal radiation.
ANALISIS KELAYAKAN USAHA AGROINDUSTRI TAHU DI DESA KUANTAN SAKO KECAMATAN LOGAS TANAH DARAT KABUPATEN KUANTAN SINGINGI (Studi Kasus Pada Usaha Agroindustri Tahu Mbak Rubingah)
Authors: Pebriansyah Fajar , Indrawanis Elfi , Mahrani Mahrani
Published: February 2020

ABSTRAKPenelitian ini dilaksanakan di Desa Kuantan Sako Kecamatan Logas Tanah Darat Kabupaten Kuantan Singingi, yang dilaksanakan pada bulan Februari sampai dengan April 2019. Tujuan penelitian ini adalah untuk mengetahui analisis kelayakan secara finansial (NPV, Net B/C, PR, PBP dan BEP) usaha agroindustri tahu di Desa Kuantan Sako Kecamatan Logas Tanah Darat Kabupaten Kuantan Singingi. Hasil Penelitian Analisis kelayakan Agroindustri Tahu Mbak Rubingah di Desa Kuantan Sako Kecamatan Logas Tanah Darat berdasarkan Net Present Value (NPV), Net B/C Ratio dan Profitability Ratio memiliki nilai positif dimana Agroindustri Tahu Mbak Rubingah sangat layak untuk dijalankan, hal ini dapat diihat pada nilai Net Present Value (NPV) adalah Rp 2.303.553.375.31, nilai Net B/C Ratio sebesar 1.85, nillai Profitability Ratio sebesar 28.96 yang bergerak positif. Untuk Pay Back Period (PBP) Agroindustri Tahu Mbak Rubingah pada 2 bulan 28 hari. Sedangkan Break Event Point (BEP) Agroindustri Tahu Mbak Rubingah pada 2 tahun 6 bulan.Kata Kunci : Agroindustri Tahu; Kuantan Sako; Studi Kelayakan Usaha ABSTRACTThis research was conducted in Kuantan Sako Village, Logas Tanah Darat District, Kuantan Singingi Regency, which was held from February to April 2019. The purpose of this study was to determine the financial feasibility analysis (NPV, Net B / C, PR, PBP and BEP) tofu agroindustry in Kuantan Sako Village, Logas Tanah Darat District, Kuantan Singingi Regency. The research results of the feasibility analysis of Tahu Agroindustri Mbak Rubingah in Kuantan Sako Village, Logas Tanah Darat District based on the Net Present Value (NPV), Net B / C Ratio and Profitability Ratio have positive values where Tahu Agroindustri Mbak Rubingah is very feasible to run, this can be seen in The Net Present Value (NPV) value is Rp 2.303.553.375.31, the Net B / C Ratio value is 1.85, and the Profitability Ratio is 28.96 which is positive. Tofu Agroindustry Pay Back Period (PBP) Mbak Rubingah at 2 months 28 days. While the Break Event Point (BEP) of Tofu Agroindustry Mbak Rubingah at 2 years 6 months.Keywords: Tofu Agroindustry; Kuantan Sako; Business Feasibility Study
PELAKSANAAN SANITASI MAKANAN PADA KERETA API DIWILAYAH DAOP VIII TAHUN 2013
Authors: Oktavianto Rizal , Diana N A T , Triastuti Ema
Published: February 2020

Food preparation attempts to serve good quality food through observation to high standard ofhealth and cleanliness, that leads to satisfactory services to the consumers, to be served at reasonableand affordable price and services . Food safety becomes a global issue that needs to be seriouslyconsidered in line with peoples' need and increasingly high demand for food safety.This research was carried out at PT Restorasi KA and aboard the Argo Bromo and Kertajayatrains. Method employed in this research was classified as descriptive analyses with a purpose to describeapplication of food sanitation and hygiene principles for the benefit of the train passengers at a particulartime.Results of observation on food sanitation-hygiene application namely in selection of raw materials67%, food storage 87%, processing of food materials 100%, storage of finished food 90%, transportationof finished food in Argo Bromo 100% and in Kertajaya train 73%, food serving in Argo Bromo andKertajaya 100%, personal hygiene among workers at PT Reska 97%, in Argo Bromo Anggrek train 100%,and in Kertajaya 98%. Tap water used for food processing has satisfied the physical and bacteriologicalrequirements, as well as the bacteriological for finished food and eating utensils.Application food sanitation and hygiene for trains operated in DAOP VIII Area especially in Argo Bromotrain scored a percentage of 95% (meeting the requirements) and in Kertajaya train scored a percentageof 92% (meeting the requirements). Suggestions to PT Reska were concentrated on selection of flour thatrequires some hardness test , and there is a need for more careful sorting of grains, temperatureadjustment in food storage, and to prohibit smoking habit among the workers. Finished and or semifinishedfood storage should be kept off the floor. It is also suggested to provide trolleys in Kertajaya trainfor the transportation of finished food
PERILAKU PENJAMAH MAKANAN DALAM MENERAPKAN HIGIENE SANITASI MAKANAN DI PONDOK PESANTREN DARUL FALAH V KECAMATAN DIWEK KABUPATEN JOMBANG
Authors: Hamzah Mohammad Nur , . Narwati , . Koerniasari
Published: February 2020

Pesantren is an Islamic boarding school for students to learn the various aspects of Islam. The educationsystem in pesantren Darul Falah V Diwek Jombang District requires students to stay in the dorms during theirentire learning period. Students are therefore required to stay and eat at the boarding school. This conditionrequires food handlers in boarding school to strictly apply food hygiene and sanitation principles in providingthe best possible food preparation services, so that nutritional needs are met and to prevent contaminationform of physical, chemical, and microorganisms that may threaten the health of the students.The results showed the characteristics of the food handlers, they are 100% female, 40% of them aged < 20years, and 40% of them have service period of < 1 years. In terms of their behavioral profile, 100% have agood knowledge, 100% indicating good attitude and 100% have good conduct. Overall evaluation of foodhygiene sanitation in Darul Falah V Islamic boarding school in Diwek Sub-District Jombang District resulted ina score of 82 %, thus its could not satisfy the designated standard, especially on the variables of buildingsand hygiene of food handlers.The conclusion of this study found that the behavior of food handlers have been good, but there was stillsome aspects of food hygiene practices need to be improved such as on personal hygiene. It is suggestedforfood handlers to provide monitoring and supervision of the sanitation of food processing plant by appointing asupervisor, produce posters containing warning and giving strict sanctions for handlers who do not carry outthe activities according to the existing rules.
PENYAKIT KULIT PADA PEKERJA PENYAMAKAN KULIT DI DESA MOJOPURNO KECAMATAN NGARIBOYO KABUPATEN MAGETAN TAHUN 2015
Authors: Ekawati Lathiefah , . NurHaidah , . Marlik
Published: February 2020

Leather tanning is an industry that processes raw hides into finished leather. This  process useschromium. Chromium will be in contact with workers’  skin. The purpose of this study is to describeskin disease in tanning workers in Mojopurno Village, Sub District of Ngariboyo, Magetan 2015.This is a descriptive study conducted by illustrating skin diseases in tanning workers. Thedescription of skin diseases in the study includes characteristicsof skin disease, knowledge,attitudes and actions of workers as well as environmental factors. The population of this study wastanning  workers of Mojopurno Village, Magetan.The result shows that there were 24 out of 103 workers who suffered from skin problems. Most ofthe sufferers were  41-50 years of 41.6%.  Exposure duration with Chromium was ≥ 8 hours / dayof  95.8% with doses of Chromium of 80 mcg / m3. 12.5% of the sufferers possessed  history ofallergy to chemicals. 54.2% Suffererspossessed  fairly good knowledge on occupational skindiseases. 100% sufferers performed good attitude and 66.7% sufferers performed good action.Work environment (temperature, humidity and ventilation) in the leather tanning of  Mojopurno Village, Magetan have qualified. Home Industry owners are advised to provide education on health and safety at work particularlyonoccupational disease, provideand enforce policies in the use the equipment. Workers areexpected to always usecomplete Personal Protective Equipment (PPE). Community around Leathertanning Home industry should submit suggestions and complaints to the owner of Home Industry.
UJI KADAR OKSIGEN PADA AIR MINUM KEMASAN DAN FAKTOR-FAKTOR YANG MEMPENGARUHI KANDUNGAN OKSIGEN
Authors: Pertiwi Ayu , Khambali Imam , . Rusmiati
Published: February 2020

Today, there are many oxygenated drinking water are sold in public. Information on labelsmentions that they contain oxygen of 20 ppm to 100 ppm. There are several factors affect oxygen level; hence, actual measurement of the oxygen content in   oxygenated drinking water was carried out. The purpose of this study is to determine oxygen level in oxygenated drinking water and determine factors that affect oxygen content. This is a descriptive research. Data collection was carried out by measuring oxygen content in oxygenated drinking water. Samples was taken from pharmacy and super market atSurabaya, with four brands and by three repetitions. Data were then analyzed in by description. Test results of oxygen content in oxygenated drinking water on sample A showing thatthe original oxygen content is 5.26%, oxygen content of sample B was 13.78%, sample C was 3.62%, and sample D was 16.74%. The four sample show that the oxygen content is lower thanlabel statement. Oxygen reduction in oxygenated water is influenced by several factors including temperature of storage. Producers are suggested to improve control quality of their products and government should supervise oxygenated drinking water to avoid public deception because information mentioned does not match reality.
KUALITAS BAKTERIOLOGIS PERALATAN MAKAN DAN PERILAKU PEDAGANG KAKI LIMA DI SENTRA WISATA JAMBANGAN SURABAYA TAHUN 2016
Authors: Pratiwi Emmy Laskar , Rahayu Umi , . Winarko
Published: February 2020

Food safety is an effort to control the risk factors of contaminations on food both come from food ingredients, people, places and equipment in order to be safe to consume. The purpose of this study was to determine the Behavior of sidewalk merchants and the bacteriological quality of eating equipments in the Jambangan Tourism Center of Surabaya City. This research is descriptive research with cross sectional approach. Data collection was by means of observation, interviews and laboratory tests. Total sample of 20 merchants. Data were analyzed descriptively in narrative form and tables. The results of research showed that the behavior of the food and drink merchants in the Jambangan Sidewalk Merchants Tourism Center of Surabaya as much as 75% behave good and 25% behave reasonably. The wipe test results of eating equipments in parameter Escherichia coli if compared with the Decree of Indonesian Health Ministry No. 1098/Menkes/VI/2003 showed that there are two stands positive Escherichia coli. It can be concluded that from the 20 merchants surveyed, 15 merchants (75%) behave well, five traders (25%) behave fairly and on wipe examination of eating tools there are 2 stands positive Escherichia coli. It is recommended in order that merchants apply the personal hygiene and provide 3 sinks for equipments and at drying use a clean cloth specifically for eating and drinking tools. Keywords   : Merchant behavior, bacteriological quality, tool wipe
FERMENTASI JERAMI PADI UNTUK KOMPOS DENGAN BEBERAPA AKTIVATOR KOTORAN TERNAK DI DUSUN SUGIHAN TUBAN TAHUN 2016
Authors: Oktavia Eliya Malika , . Darjati , . Mamik
Published: February 2020

Dusun Sugihan has thewidest area of paddy field in Desa Sumberejo with post-harvest rice straw of 12 tons/ha.Those rice straw have not used optimally.Ifleft untreated, it can spoil the aesthetics of the environment, generates odor and becomes a den of disease vectors. The purpose of the present study was to determine the fermentation process of composts and the quality of composts produced with regard to temperature, humidity, pH, water content, C/N ratio and levels of Pb in composts.The present study was a pre-experiment usinga statistical group comparison. Data were analyzed descriptively in order to describe the results of the field inspection and laboratory testing in accordance with SNI 19-7030-2004 on Compost Quality Standards. Results of this 8-wk study showed that the fastest composting time was for the compost with chicken manure was the activator at a dose of 30% for 3 weeks.In terms of compost quality, which includes temperature, pH, humidity, water content and levels of Pb,all of the composts fulfilled the requirements. However, with regard to C/N ratio,those composts with activator of 10% cow manure,10% goat manure and no manure did not fulfill the requirements with a C/N ratio of 27.36, 23.64 and 26.75, respectively. Therefore, it is recommended to make composts using manure as an activatorat a dose ≥20% in order for fulfillment of C/N ratio and shorter composting time. Keywords: Compost fermentation, rice straw, manure as activator
TINGKAT KERACUNAN DAN ENZIM CHOLINESTERASE PADA DARAH PETANI PADI TAHUN 2016 (Studi Kasus Di Daerah Kepuh Anyar, Kabupaten Mojokerto)
Authors: Puspita Sella , . Ngadino , . Koerniasari
Published: February 2020

ABSTRACTPesticides poisoning can affect the activity of cholinesterase enzyme that breaks down acetylcholinecompound that plays role in transmitting signal or stimulus into muscle nerve cells adjacent to each other thatstimuli can stop.Factors which allow the poisoning is the absence of PPE when working and unstandardized dosage ofpesticides usage. Poisoning can occur through skin contact, inhalation or oral. The purpose of this study is todetermine blood cholinesterase enzyme working activities on rice farmer in Kepuh Anyar, Mojokerto 2016. Thisstudy is a descriptive study with cross sectional approach. Data collection was carried out through laboratoryresults.The result of this study shows that the majority of rice farmers in Kepuh Anyar village, Mojokerto usedcarbamate and peritroid pesticides. The average age of farmers was > 40 years, working duration of ≤ 8 hours,years of 11-15, and had sufficient knowledge to categories of pesticides. However, most of the farmers‟cholinesterase enzyme experienced poisoning in mild and moderate poisoning level.Related agencies are suggested to conduct counseling about the dangers of pesticide contamination toagricultural sector. Further researchers are advised to analyze other factors that may affect the activity ofcholinesterase enzyme.Keywords : Work Activity of Cholinesterase Enzyme, rice farmers
Penurunan Kadar Amonia Limbah Cair Menggunakan Adsorben Abu Terbang Bagas di Industri Penyamakan Kulit
Authors: Pratiwi Betryana Agnes , . Darjati , Hermiyanti Pratiwi
Published: February 2020

The incidence of odor around the waste of the tannery industry is due to the high ammonia (NH3) content of 3.79 mg/l, so to lower the high levels of ammonia (NH3) it is necessary to process. The purpose of this research is to reduce ammonia (NH3) in the wastewater of tannery industry according to environmental quality standard. The method of this study was experimental, with Pretest-Posttest with control group design comparing ammonia decrease before and after processing, with treatment variation for 2 gram of adsorbent mass; 3 grams; 4 grams and contact time of 60 minutes; 90 minutes; 120 minutes. Measurement of ammonia (NH3) using a spectrophotometer. The highest percentage of ammonia (NH3) decline was 96.83% in a 4 gram treatment variation with 120 minutes contact time, with a decrease in ammonia value of 0.12 mg/l where the environmental quality standard of East Java Governor Regulation No. 52 of 2014 Ie 0.5 mg / l, so that the results meet the environmental quality standards. The results of statistical analysis showed that the most optimum is the mass of 4 gram adsorbent with contact time of 120 minutes. Suggestions for related industries can use the results of this study in the process of decreasing levels of ammonia (NH3) and for other researchers is expected to combine with other technologies to optimize the results in reducing levels of ammonia (NH3). Keywords : Fly ash, ammonia levels of liquid waste
PEMANFAATAN LIMBAH MARMER SEBAGAI BAHAN CAMPURAN UNTUK PEMBUATAN PAVING BLOCK
Authors: FR Fadlillah , Nurmayanti Demes , Rokhmalia Fitri
Published: February 2020

Sampai saat ini pemanfaatan limbah marmer kurang maksimal. Perminggu dapat menghasilkan limbah ± 1 sampai 10 ton. Paving block pada umumnya menggunakan campuran pasir dan semen dengan perbandingan 1 : 5. Tujuan penelitian ini mengetahui adanya pengaruh perbedaan kuat tekan dan serap air dengan komposisi berbeda dan pengujian hari dengan mengacu standart (SNI 03-0691-1996).Disini mencoba memanfaatkan limbah digunakan untuk Paving block dengan 4 variasi campuran 1 Pc : 5 Ps, 1 Pc : 5 Lm, 1 Pc : 3 Lm : 2 Ps, 1 Pc : 2 Lm : 3 Ps dengan uji kuat tekan dan serap air hari ke-7, 14, 21 dan 28 hari. Penelitian ini merupakan penelitian eksperimen dengan menggunakan rancangan Pottest Only Control Group Design dan data di analisis dengan uji One Way Anova.Hasil penelitian menunjukkan uji kuat tekan pada kontrol dan 4 variasi paling tinggi hari ke-28 sebesar 2,10 MPa dan variasi kode B 0,86, kode C 1,47 dan kode D 2,09 (MPa). Hasil uji serap air memenuhi standart maksimal penyerapan 10%. Berdasarkan uji statistik signifikan menunjukkan 0,001 < 0,05, yang berarti Ho ditolak ada perbedaan kuat tekan dan serap air Paving block dengan ketiga variasi kelompok.Kesimpulan kuat tekan Paving block kontrol dan 4 variasi paling tinggi hari ke-28 2,10 MPa dan komposisi D 2,09 MPa tetapi masih di bawah standart. Uji serap air Paving block memenuhi standart. Disarankan peneliti selanjutnya menambah campuran 2 Pc : 3 Lm : 5 Ps dan penambahan umur 35 hari. Kata Kunci : Limbah Marmer, Kuat Tekan, Serap Air, Paving Block