bluuebunny/crossref_metadata_2025 huggingface dataset:
Desgaste da ferramenta de corte de metal duro – uma abordagem estatística
Authors: Batista da Silva Escarlet , Monteiro Ramalho Alan , José de Oliveira Luciano
Published: October 2020

A usinagem é considerada um processo de fabricação onde tem-se remoção de material na forma de cavaco, conferindo à peça de trabalho forma, dimensões e acabamento. Pode-se dizer, que o torneamento é o processo de usinagem mais executado na indústria, por ser fácil de operar e economicamente viável, apresentando uma grande participação na fabricação de peças usinadas. Este trabalho tem como objetivo principal avaliar o desgaste de uma ferramenta de corte de metal duro após operação de torneamento, bem como, avaliar a efetividade do método utilizado por análise estatística. O material escolhido para os testes de usinagem foi o aço AISI 1020. Para os ensaios de usinagem, foram realizadas operações de desbaste em torno CNC, onde avaliou-se alguns parâmetros como rugosidade, temperatura e o diâmetro da peça a cada passe. Foram realizados ensaios de dureza Rockwell B e análise metalográfica no aço 1020. Para avaliar o desgaste do inserto, mediu-se as suas dimensões antes e após os testes de usinagem, confrontando as medidas via projetor de perfil com as medidas realizadas utilizando micrômetro. Após os testes de usinagem, a ferramenta de metal duro apresentou predominantemente desgaste de cratera e de flanco. Os testes estatísticos realizados (coeficiente de Pearson, teste t e distribuição normal), indicaram que este método de determinação de desgaste da ferramenta de corte, pode ser um método alternativo de avaliação.
The Molecular Mechanisms of Photoactivation of Orange Carotenoid Protein Revealed by Molecular Dynamics
Authors: Bondanza Mattia , Cupellini Lorenzo , Faccioli Pietro , Mennucci Benedetta
Published: October 2020

Light-harvesting in photosynthesis is accompanied by photoprotective processes. In cyanobacteria, the photoprotective role is played by a specialized complex, the Orange Carotenoid Protein which is activated by strong blue-green light. This photoactivation involves a unique series of structural changes which terminate with an opening of the complex into two separated domains, one of which acts as a quencher for the light-harvesting complexes. Many experimental studies have tried to reveal the molecular mechanisms through which the energy absorbed by the carotenoid finally leads to the large conformational change of the complex. Here for the first time, these mechanisms are revealed by simulating at atomistic level the whole dynamics of the complex through an effective combination of enhanced sampling techniques. On the basis of our findings, we can conclude that the carotenoid does not act as a spring that, releasing its internal strain, induces the dissociation, as it was previously proposed but as a "latch" locking together the two domains. The photochemically triggered displacement of the carotenoid breaks this balance, allowing the complex to dissociate.
Twistable Dipolar Aryl Rings as Electric Field Actuated Conformational Molecular Switches
Authors: Lozano Kílian Jutglar , Santiago Raul , Ribas Jordi , Bromley Stefan
Published: October 2020

The ability to control the chemical conformation of a system via external stimuli is a promsing route for developing molecular switches. For eventual deployment as viable sub-nanoscale components that are compatible with current electronic device technology, conformational switching should controllable by a local electric field (i.e. E-field gateable) and accompanied by a rapid change in conduction. In organic chemical systems the degree of π-conjugation is linked to the degree of electronic delocalisation, and thus largely determines the conductivity. Here, by means of accurate first principles calculations, we study the prototypical biphenyl based molecular system in which the dihedral angle between the two rings determines the degree of conjugation. In order to make this a gateable system we create a net dipole by asymmetrically functionalising one ring with electronegative substituents (F, Br and CN) with different polarisabilities. In this way, the application of an E-field interacts with the dipolar system to influence the dihedral angle, thus controlling the conjugation. For all three considered substituents we consider a range of E-fields, and in each case extract conformational energy profiles. Using this data we obtain the minimum E-field required to induce a barrierless switching event for each system. We further extract the estimated switching speeds, the conformational probabliities at finite temperatures, and the effect of applied E-field on electronic structure. Consideration of these data allow us to assess which factors are most important in the design of efficient gateable electrical molecular switches.
VACÍOS URBANOS: Dimensión física o existencial
Authors: Rodríguez Mogollón Carlos Enrique , Miranda Flores Javier Nestor
Published: October 2020

El desarrollo actual de las ciudades de nuestro país, sin planificación orgánica y con un alto grado de espontaneísmo, configura escenarios que semeja un inmenso cuerpo sin órganos, una morfología urbana y espacial y nuevas formas de ocupación del territorio, fragmentado y discontinuo, con llenos y vacíos que le otorgan una naturaleza particular, en especial en la periferia. Tomando como referencia el caso de Piura y Castilla, nuestro objetivo central fue desarrollar una perspectiva dialéctica de la manera cómo ha evolucionado el pensamiento teórico en el tratamiento de los vacíos urbanos, particularmente en la literatura urbanística, pero sin dejar de lado los aspectos relacionados con la planificación, la gestión y la naturaleza socio-espacial de estos espacios. Metodológicamente, desplegamos todo el esfuerzo para ofrecer un pormenorizado recuento del pensamiento urbanístico sobre la materia, en la perspectiva de un estado del arte que ayude a entender su dinámica. Los resultados confirman dos principales formas de abordaje del tema; la primera, enfoca el fenómeno de los vacíos urbanos, como el resultado de un modelo de ciudad contemporánea, que genera fragmentos y discontinuidad urbana; y, la segunda, como el resultado de una ciudad pos moderna, de una sociedad consumista e indiferente y desde la percepción del vacío como lugar o espacio existencial. Concluimos en el hecho de que ambas orientaciones tienen un valor agregado específico, particularmente la primera, si tomamos en cuenta las características de las ciudades en América Latina y el Perú y porque pueden ser oportunidades valiosas para transformar su actual condición.
Kata dan Istilah dalam Tradisi Belanger, Bulanger, dan Pelangeran Pada Masyarakat Lampung (Kajian Etnolinguistik)
Authors: Kastri Evi Maha
Published: October 2020

This article aims to describe and explain the form, meaning, and use of terms in the belanger tradition in Lampung society. This research is a type of qualitative descriptive research. The research method is divided into three stages, namely (a) the stage of providing data; (b) data analysis stage; and (c) the data presentation stage. The stage of providing data used in this study is the referral method, which is listening to the conversation by interviewing informants in three regions. Then advanced techniques are used, namely recording techniques and note taking techniques. Then the required data is sorted. Once collected, the data is analyzed by being classified based on the form, meaning, and use. The terms belanger, bulanger, and pelangeran have the same meaning, which are both self-cleaning or purifying themselves. The term belanger is for traditional leaders and brides. Then, the term bulanger is intended for a pregnant mother, while the term pelangeran is intended for Muslims who will enter the month of Ramadan. During the belanger ceremony in Negara Aji Baru Village 12 supporting terms were found. While the bulanger tradition in Blambangan Umpu Subdistrict there are 12 supporting terms. Then, the pelangeran tradition in Olok Gading District Village has 3 supporting terms. AbstrakArtikel ini bertujuan mendeskripsikan dan menjelaskan bentuk, makna, dan penggunaan istilah-istilah dalam tradisi belanger pada masyarakat Lampung. Penelitian ini merupakan jenis penelitian deskriptif kualitatif. Metode penelitian dibagi atas tiga tahap, yaitu (a) tahap penyediaan data; (b) tahap analisis data; dan (c) tahap penyajian data. Tahap penyediaan data yang digunakan dalam penelitian ini adalah metode simak, yaitu menyimak pembicaraan dengan mewawancarai informan di tiga daerah. Kemudian digunakan teknik lanjutan yaitu teknik rekam dan teknik catat. Lalu dipilah data yang dibutuhkan. Setelah terkumpul, data dianalisis dengan diklasifikasikan berdasarkan bentuk, makna, dan penggunaannya. Istilah belanger, bulanger, dan pelangeran memiliki persamaan makna, yaitu sama-sama membersihkan diri atau menyucikan diri. Istilah belanger diperuntukkan bagi tokoh adat dan pengantin. Kemudian, istilah bulanger diperuntukkan bagi seorang ibu yang sedang mengandung, sedangkan istilah pelangeran diperuntukkan bagi umat muslim yang akan memasuki bulan Ramadan. Dalam pelaksanaan upacara belanger di Desa Negara Aji Baru ditemukan 12 istilah pendukung. Sementara tradisi bulanger di Kecamatan Blambangan Umpu terdapat 12 istilah pendukung. Kemudian, tradisi pelangeran di Kelurahan Negeri Olok Gading terdapat 3 istilah pendukung.
UMA VISÃO SOBRE OS MUSEUS DE CIÊNCIAS COMO ESPAÇOS NÃO FORMAIS: O BOSQUE DA CIÊNCIA UM EXEMPLO AMAZÔNICO
Authors: Santos Saulo Cezar Seiffert
Published: October 2020

Espaços não formais, como Museus de Ciências, têm contribuído com a sociedade, e mais especificamente com a escola, para a popularização da Ciência e, assim, somando à formação cidadã. Na região Norte do Brasil, a Amazônia, há poucos museus, mas há diversos espaços abertos não formais que assumem essa função. A partir desse quadro problematizamos e propomos possíveis relações entre os Museus de Ciências, a Divulgação Científica e a Escola, na condição de esferas de atividades relativamente autônomas, e em seguida nos ateremos aos possíveis dialogismos do Museu de Ciências com a Escola a partir das pesquisas com o Bosque da Ciência, do Instituto Nacional de Pesquisa da Amazônia. Utilizamos a estratégia do ensaio acadêmico para construir esse diálogo. Consideramos que as relações dessas três esferas produzem formas próprias de promover a formação e a divulgação científica, e que nas interações entre escola e museu se faz necessário superar as abordagens fechadas e monológicas, além de se abrir para interações, não somente de recursos, mas também de propostas dialógicas de educação para a formação que promova a cultura científica e cidadã.
TECENDO CONHECIMENTOS DE MULTIPLICAÇÃO COM O USO DA PLATAFORMA KHAN ACADEMY COM ALUNOS DO 5º ANO DO ENSINO FUNDAMENTAL
Authors: Vasconcelos Itaciara da Costa de , Andrade Alexandra Nascimento de , Negrão Felipe da Costa
Published: October 2020

O presente artigo tem o objetivo de apresentar as contribuições do uso da plataforma Khan Academy nas aulas de Matemática, com alunos do 5º ano, do Ensino Fundamental de uma Escola Municipal, da Zona Leste, da cidade de Manaus (AM). O uso de recursos tecnológicos no Ensino de Matemática converge para a superação de estigmas e concepções enraizadas de que esse componente curricular é cansativo, decorativo e sem contextualização. Por isso, desenvolveu-se uma pesquisa-ação interventiva, na qual organizamos uma Sequência Didática com atividades que envolveu a operação de multiplicação e o uso da plataforma Khan Academy, isto a fim de oportunizar uma experiência de aprendizado significativo. Nesse ínterim, os registros da sequência didática foram coletados a partir de conversas informais, observações, registros no caderno de campo e filmagens das ações docentes e discentes frente a proposta de trabalho com o Khan Academy. Os resultados da ação demonstram o aumento do interesse dos estudantes, que outrora se mantinham dispersos nas aulas de matemática, além de possuírem notas abaixo da média na disciplina. Sendo assim, consideramos que o uso desta plataforma no processo de ensino e aprendizagem da matemática, quando explorada de modo planejado, pode ser uma forte aliada a didática do professor.
INTERNACIONALIZAÇÃO DO ENSINO SUPERIOR NO CONTEXTO DAS LICENCIATURAS NA ÁREA DE EDUCAÇÃO EM CIÊNCIAS
Authors: Paula Poliana C. Rocha de , Mello Irene Cristina de
Published: October 2020

Dentre as políticas destinadas ao ensino superior brasileiro na última década, a internacionalização ganhou espaço considerável como um importante caminho para o desenvolvimento institucional. Este artigo se debruça sobre essa temática, analisando o processo da internacionalização no contexto das licenciaturas, a partir da perspectiva dos estudantes. Para tanto, foi realizada uma pesquisa qualitativa com produção de dados em duas etapas. Na primeira fase foi realizada a análise de documentos, a fim de investigar a participação de estudantes de licenciatura nos processos de mobilidade internacional. Na segunda etapa foi executada uma entrevista com aplicação da técnica de grupo focal, realizada presencialmente com estudantes do curso de Licenciatura da área de Química de uma universidade pública. Foram estabelecidas três categorias para análise dos dados pertinentes ao conceito de internacionalização, as experiências internacionais e habilidades linguísticas dos estudantes. A análise dos dados permitiu concluir que ainda existe muita desigualdade em termos de números de mobilidade internacional entre os estudantes dos cursos de Bacharelado e de Licenciatura. As licenciaturas têm pouca participação no movimento de internacionalização, sobretudo nas políticas públicas atuais, o que evidencia a necessidade de ações institucionais na busca de métodos e estratégias que oportunizem a ampla participação de professores, técnicos e estudantes.
PENGARUH KECERDASAN INTELEKTUAL, KEMAMPUAN FISIK DAN KECERDASAN EMOSIONAL TERHADAP KINERJA PEGAWAI SPRIPIM POLDA SULAWESI SELATAN
Authors: Ramli Muh , Nurdin Nurdin
Published: October 2020

The research aims to: 1) analyze the influence of intellectual intelligence on the performance of the Spripim Polda of South Sulawesi employees; 2) analyzing the influence of physical ability to the performance of officers Spripim Polda South Sulawesi; 3) Analyzing the influence of emotional intelligence on the performance of Spripim Polda South Sulawesi employees; 4) Analyzing the factors which are dominant influence on the performance of officers Spripim Polda South Sulawesi. The population of this research is all employees of the Spripim Polda South Sulawesi, amounting to 81 people with a whole sample or a saturated sample. The results showed that the influence coefficient of intellectual intelligence on employee performance is 0.330 with the value p = 0.012 0.05 This suggests that intellectual intelligence has a significant positive effect on employee performance. Influence coefficient of physical ability to employee performance of 0.138 with value p = 0.033 0.05. This suggests that physical abilities have a significant positive effect on the employee's performance, the influence coefficient of emotional intelligence Ssterhadap employee performance of 0.584 with a value of P = 0.000 0.05. This suggests that emesional intelligence has a significant positive effect on employee performance, and the highest beta value is an emotional intelligence variable with a beta value of 0.532. This indicates that the dominant influential variable affects the employee's performance as a variable of emotional intelligence.
PENGARUH MOTIVASI TERHADAP PENINGKATAN PRODUKTIVITAS KERJA PEGAWAI PADA KANTOR SAMSAT KABUPATEN SIDRAP
Authors: Andayaningsih Sri , Rulianty Rulianty
Published: October 2020

The purpose of this study was to determine the effect of motivation on increasing employee productivity in the Samsat Sidrap District office. The research method uses quantitative methods because the research data are numbers that are processed using spss 20 alerts. With a population of 45 and a sample of 31 respondents the data analysis technique used in this study is simple linear regression with motivation variables (X) and employee performance (Y ). The results showed that from the simple linear regression that was processed and analyzed using the SPSS method, the equation obtained was Y = 6.592 + 0.664 X, where the constant number has a value of 6.592 (positive) stating that if there is no work motivation (X) then productivity work (Y) is 0.664, meaning that the employee's work productivity is still constant even though work motivation towards Y is zero. If there is a decrease in work motivation, it will reduce the level of employee productivity. So that it can be explained that work motivation has an influence and significant effect on employee work productivity in the Samsat district office
ANALISIS PERBANDINGAN RASIO PROFITABILITAS PADA PT. MANDOM INDONESIA TBK DENGAN PT. MARTINA BERTO TBK
Authors: Ahdiaryani Rizki , Alwi Alwi
Published: October 2020

This study aims to determine and analyze the ratio of profitability ratios using the ROE ratio at PT. Mandom Indonesia Tbk with PT. Martina Berto Tbk. This type of research is a comparative study, with the research sample is the annual financial statements for the last 9 years from 2010 to 2018. The sampling technique used was purposive sampling. Data collection uses observation, documentation and heritage studies. The data analysis method used is the t-test separated variant test and also using the SPSS program. From the results of the t-test separated variant test with the help of the SPSS program, the calculated t value of 1.971 was obtained. If compared between the value of tcount with ttable, then tcount is smaller than ttable (1,971 2,120). The results of this study concluded that there were differences in profitability ratios between PT. Mandom Indonesia Tbk with PT. Martina Berto Tbk. Keywords: Profitability Ratio, ROEPenelitian ini bertujuan untuk mengetahui dan menganalisis perbandingan rasio profitabilitas dengan menggunakan rasio ROE pada PT. Mandom Indonesia Tbk dengan PT. Martina Berto Tbk. Jenis penelitian yang digunakan adalah penelitian komparatif, dengan sampel penelitian adalah laporan keuangan tahunan selama 9 tahun terakhir dari tahun 2010 sampai tahun 2018. Teknik sampling yang digunakan adalah purposive sampling. Pengumpulan data menggunakan observasi, dokumentasi dan studi pusaka. Metode analisis data yang digunakan adalah uji t-test separated varian dan juga dengan menggunakan program SPSS. Dari hasil uji t-test separated varian dengan bantuan program SPSS maka diperoleh nilai t hitung sebesar 1,971. Jika di bandingkan antara nilai thitung dengan ttabel, maka thitung lebih kecil dari ttabel (1,9712,120). Hasil dari penelitian ini menyimpulkan bahwa ada perbedaan rasio profitabilitas antara PT. Mandom Indonesia Tbk dengan PT. Martina Berto Tbk.Kata Kunci : Rasio Profitabilitas, ROE
Capturing respiratory syncytial virus season in Belgium using the influenza severe acute respiratory infection surveillance network, season 2018/19
Authors: Subissi Lorenzo , Bossuyt Nathalie , Reynders Marijke , Gérard Michèle , Dauby Nicolas , Bourgeois Marc , Delaere Bénédicte , Quoilin Sophie , Van Gucht Steven , Thomas Isabelle , Barbezange Cyril
Published: October 2020

Background

Respiratory syncytial virus (RSV) is a common cause of severe respiratory illness in young children (< 5 years old) and older adults (≥ 65 years old) leading the World Health Organization (WHO) to recommend the implementation of a dedicated surveillance in countries.

Aim

We tested the capacity of the severe acute respiratory infection (SARI) hospital network to contribute to RSV surveillance in Belgium.

Methods

During the 2018/19 influenza season, we started the SARI surveillance for influenza in Belgium in week 40, earlier than in the past, to follow RSV activity, which usually precedes influenza virus circulation. While the WHO SARI case definition for influenza normally used by the SARI hospital network was employed, flexibility over the fever criterion was allowed, so patients without fever but meeting the other case definition criteria could be included in the surveillance.

Results

Between weeks 40 2018 and 2 2019, we received 508 samples from SARI patients. We found an overall RSV detection rate of 62.4% (317/508), with rates varying depending on the age group: 77.6% in children aged < 5 years (253/326) and 34.4% in adults aged ≥ 65 years (44/128). Over 90% of the RSV-positive samples also positive for another tested respiratory virus (80/85) were from children aged < 5 years. Differences were also noted between age groups for symptoms, comorbidities and complications.

Conclusion

With only marginal modifications in the case definition and the period of surveillance, the Belgian SARI network would be able to substantially contribute to RSV surveillance and burden evaluation in children and older adults, the two groups of particular interest for WHO.
СТВОРЕННЯ ЕЛЕКТРОННИХ ЕКЗАМЕНАЦІЙНИХ БІЛЕТІВ ЗАСОБАМИ ПЛАТФОРМИ ДИСТАНЦІЙНОГО НАВЧАННЯ MOODLE
Authors: Лопіна Наталія
Published: October 2020

Запровадження дистанційного формату навчання в умовах пандемії COVID-19 у світі ставить нові виклики не тільки до організації процесу навчання, а й відпрацювання алгоритмів проведення оцінювання знань у дистанційному форматі, розроблення методів дотримання академічної доброчесності у середовищі платформ дистанційного навчання при взаємодії студент-викладач. У статі наводиться алгоритм створення тестів в системі дистанційного навчання Moodle. Вводяться поняття статичного та динамічного електронних екзаменаційних білетів. Аналізуються засоби контролю дотримання академічної доброчесності під час заповнення електронних екзаменаційних білетів: особливості налаштування тесту, засоби ідентифікації платформи дистанційного навчання, особливості організації іспиту у дистанційному форматі, використання додаткових плагінів платформи дистанційного навчання. Проведено математичне моделювання вірогідностей комбінацій та частоти зустрічання електронних екзаменаційних білетів різних типів під час іспиту. Алгоритми створення статичного та динамічного електронних білетів можуть бути використанні для проведення підсумкових, іспитів в умовах дистанційного формату навчання, а також для супроводу змішаного формату навчання в навчальних закладах середньої, профільної, вищої освіти.
«SELF-BOOK» OF PERSONAL AND PROFESSIONAL GROWTH OF THE FUTURE TEACHER
Authors: Новик Ірина
Published: October 2020

In the article, we substantiate the theoretical and practical aspects of the application of "Self-book" of personal and professional growth of the future teacher. In scientific exploration, we reveal the essence and content of the concept of "Self-book", which is presented as an individual diary (book, notepad or glider) of a student, in which he captures his own achievements in personal and professional growth, determines the trajectory of self-knowledge, self-development and self-improvement also monitors the dynamics of educational outcomes through proposed diagnostic techniques. The content and methodological support of "Self-book", which allows to track the dynamics of educational results and personal and professional development of students throughout the entire period of study at a higher education institution, is characterized. We have shown that personal and professional development is a complex multifaceted process, which aims at the formation of future teachers not only general and professional competences, but also envisages the development of their personal meanings. The study identified the main components of personal and professional development of future educators, namely: personal (value-personal and professional settings; self-knowledge and self-development; professional elevation); 21st century skills (critical thinking and problem-solving skills; communication and collaboration skills; digital skills), research and development (ability to highlight the research problem; work in a team; design stages of the research; select the necessary tools to solve the research task; analyze, organize, summarize the information received; to acquire new knowledge for their own use in their professional activity; to create and present their own educational products), reflective (self-concept, personal qualities and results of their own activity; self-analysis, self-knowledge, self-diagnostics, self-assessment, self-development, self-improvement; ability to detect mistakes, disadvantages of their own professional activity, and correct them). This article discusses the advantages and disadvantages of using Self-book in the personal-professional development of a future educator.
Desarrollo y evaluación de un gateway móvil IoT para redes 4G LTE
Authors: Quiñones Manuel Fernando , Pachar Bravo Hever Patricio , Martínez-Curipoma Javier , Quiñones Luis , Torres Rommel
Published: October 2020

La tendencia actual es interconectar cualquier dispositivo para ser monitoreado y controlado de manera remota por medio de tecnologías propias del concepto de IoT. Uno de los problemas es conectar los dispositivos a una red mediante tecnologías con suficiente cobertura y capacidad, por lo que en el presente artículo se muestra el desarrollo de un gateway móvil para aplicaciones IoT bajo la plataforma Android, evaluado en redes móviles de 4G. El gateway móvil IoT envía los datos recolectados de sensores mediante la selección de los protocolos MQTT y HTTP, hacia plataformas IoT en Internet. La arquitectura se compone de sensores de temperatura, luminosidad y presión que se integran en un nodo sensor, cuya función es la obtención de los datos, procesamiento y luego, mediante Bluetooth, se envía a un smartphone Android, donde se ejecuta una aplicación que hace la función gateway móvil. Aquí se realiza el entramado de datos que son enviados mediante la red 4G LTE hacia las plataformas IoT de Ubidots y Watson IoT. Posteriormente se realizaron pruebas con varias métricas como latencia, demanda de corriente y costos de conexión. Se concluye que el gateway móvil IoT tiene un mejor rendimiento bajo el protocolo MQTT, en comparación con HTTP.
ASSESSMENT OF RESPIRATORY SYMPTOMS AND ASSOCIATED FACTORS AMONG HOUSE PAINTERS IN KINONDONI MUNICIPALITY TANZANIA
Authors: Onesmo Brigitha M , Rongo Larama MB
Published: October 2020

Background: House painters are increased as people prefer to live in good and decorated houses. Mishandling of paints and inhalation of paint materials become a problem as this paints contain chemicals which are poisonous upon inhalation. However, few studies have assessed respiratory symptoms among house painters in the Africa. The main objective of this study was to assess respiratory symptoms and associated factors among house painters. Methods: We used a questionnaire to interview 172 house painters and 148 non exposed group in different construction sites. A sub sample of 25 house painters was evaluated for lung function using EasyOne spirometer Results: The study revealed significant results when respiratory symptoms were compared among painters and non-exposed group (p<0.05). Low level of knowledge among workers and poor use of PPE were the main factors associated with exposed to paints. Protection of those workers would be only successfully if enforcement policy is enacted about every site to provide personal protective equipment (PPE) to workers. Conclusion: House painters are exposed to different painting materials and therefore appropriate measures are recommended.
STUDY OF 7 BUILDING DEVELOPMENT PLANNING SPECIFICATION OF STEEL FRAMEWORK STRUCTURE (BASED ON SNI 1729 - 2015) (CASE STUDY: OFFICE BUILDING CONSTRUCTION PROJECT)
Authors: Admanegara Tomi , Koespiadi Koespiadi
Published: October 2020

Steel is a material that is widely used in industrial development and buildings with functions as the main building frame. This plan aims to plan a building structure with 7 floors plus a ground floor that will function as an office building with analysis using a Structure Analysis Program (SAP 2000 v.19) combined with steel regulations on SNI 1729: 2015. Based on the results of SAP analysis 2000 v.19 produces a column structure using WF Steel 400x400x30x50 with the beam 1 using the profile of Steel WF 350x300x14x23 and for the beam 2 using the profile of Steel WF 200x200x9x14. For anchor and baseplate using anchor M-25 with a length of 400 mm, with baseplate thickness of 25 mm and for bolts using M-25 bolts with a total of 16 bolts.
ANALYSIS OF PRODUCT QUALITY, SALES PROMOTION, BRAND IMAGES, AND AFTER-SALES SERVICE TOWARDS SAMSUNG GADGET PURCHASE DECISIONS
Authors: Safitriani Lina , Arimbawa I Gedhe , Baktiono Agus , Damayanti Elok
Published: October 2020

This study aims to determine the effect of simultaneous and partial product quality, brand image, sales promotion and after-sales service on purchasing decisions of Samsung smartphones at the Discovery Mobile Store in Sidoarjo. This research used quantitative method. The population  and sample based on the questionnaire distribution to consumers who visited the Discovery Ponsel Store Sidoarjo, and were taken as 135 respondents. Data collection techniques used interviews, observation and questionnaires. The data analysis used reliability test, validity test, classic assumption test and multiple linear analysis test. The simultaneous and partial results of product quality, brand image, sales promotion and after-sales service have a significant effect on the purchase decision of Samsung smartphones at the Discovery Ponsel Sidoarjo Store because of the significance of <0.005.
SAFETY AND SECURITY STUDIES OF RAILWAY LINES WITH PUBLIC ROADS (CASE STUDY OF RAILROAD CROSSING IN THE KENJERAN ROAD OF SURABAYA CITY)
Authors: Mahmudi Irwan , Mudjanarko Sri Wiwoho
Published: October 2020

Railways are a mode of transportation that is being liked by the public because of its efficiency. The train has its own road in the form of rails, it doesn’t mean the train doesn’t intersect other transportation. The train crossing is a conflict area for public road users with train. This includes train crossing at Kenjeran street. The kenjeran street itself is a national road that is quite strategic because it is one of the accesses to the Surabaya-Madura toll road. The research this time aims to find out the security aspects that must be improved at the train crossing kenjeran street. Including rider behaviour at the time of the train crossing. The method used for this research is direct observation of the field and also shares questionnaires to find out if a public road user understands regulations while on a train crossing. The research results of many signs or road markers are incomplete so that many road users do not know that in front of the train crossing. Other public road user behaviour is also a lot of offense.
ANALYSIS SCHEDULING PROJECT USING CPM METHOD (Case study : Project of the Surabaya Caspian Tower Apartment)
Authors: Maprilana Harjian , Koespiadi Koespiadi
Published: October 2020

The success and failure of project implementation is often caused by poor planning and ineffective controls, so that project activities experience various obstacles such as the late completion of the project, the decline in the quality of work and the swelling of implementation costs. Project management is carried out to manage the project from the beginning of the project until the completion of the project properly. The case study in this study is PT. PP (Persero) Tbk. as the executing element of the construction work, it is in charge of organizing the construction of the Surabaya Caspian Tower Apartment in East Java. The CPM (Critical Path Method) method is used to find out how long a project has been completed and look for possible acceleration of project time. From the research using the CPM method, it can be seen that the normal duration of project completion is 453 days which can be optimized to 350 days. This can be done by giving special attention to activities included in the critical path and accelerating some activities by increasing the number of workers
THE EFFECT OF ADDITION SILICA FUME, SUPERPLASTICIZER, AND BONDING TO REACHING HIGH QUALITY LIGHTWEIGHT CONCRETE
Authors: Yuliansari Ayuk Putri , Kurniawan Fredy
Published: October 2020

In this research, a lightweight concrete mixture was made with foam and made use of the remaining broken rock from the Crusher Machine process, which was washed ashes. Other added ingredients used in the mixture are Silica Fume, Superplasticizer (Admixture Type F) and Bonding. This reseach uses a mix design from Circular Letter Number: 44 / SE / M / 2015 Concerning Design Guidelines for Mixing Light Material with Foam Mortar for Road Construction, Ministry of PUPR. Trial mix variations carried out are in proportion (SF 5%; BO 0.5%), (SF 10%; BO 0.5%), (SF 5%; BO 1%), (SF 10%; BO 1% ), as well as foam agents with variations 1:20 and 1:40. The treatment process (curing) of the test object is immersed in a water bath, and the testing of the compressive strength of the test object is carried out at the age of 7 days, 14 days and 28 days. By using stone ash, lightweight concrete was obtained with an average specific gravity of 1722 kg / m3 to 1884 kg / m3. From the research results obtained the highest average compressive strength with the percentage of material that is in the variation of the SF 10% ; BO 0.5% and ratio foam (1) : water (40) only for K 190.6 kg/cm2 or FC 15.82 MPa. In each specimen the value of quality efficiency with the most optimum weight variation at SF 10% ; BO 0.5% with a coefficient value of 10.03%.
Analisis Kualitatif Etnomatematika Dari Destinasi Wisata Uma Lengge
Authors: Mariamah M , Muslim M , Amrullah A , S Prayitno
Published: October 2020

Destinasi wisata Uma LenggeÃÂ merupakan warisan budaya masyarakat Bima yang memiliki nilai etnomatematika. Nilai etnomatematika tersebut belum banyakÃÂ diaplikasikan dalam pembelajaran matematikaÃÂ danÃÂ mengakibatkanÃÂ pembelajaran ÃÂ matematika diÃÂ sekolah belum dapat menampilkan konteks nyata yang berkaitan langsung dengan aktivitas sehari-hari siswa.ÃÂ Tujuan tulisanÃÂ ini adalah untuk menganalisis beberapa bentuk geometri apa saja yang terdapat dalam struktur Uma LenggeÃÂ tersebut agar nantinya dijadikan sebagai referensi bagi guru untuk menerapakan etnomatematika dari destinasi Uma LenggeÃÂ dalam pembelajaran matematika di SD. TulisanÃÂ ini dilakukan denganÃÂ penelitian deksriptif kualitatif. Instrument yang digunakan untuk mengumpulkan data adalah dokumentasi dan wawancara. Hasil dokumentasi dan wawancara akan dianalisis secara kualitatif mulai dari reduksi data, interpretasi data dan penarikan kesimpulan. Adapun hasil penelitian bahwa destinasi Uma Lengge memiliki nilai etnomatematika berbentuk geometri seperti: 1) trapesium sama kaki, 2) segititiga, 3) Persegi, 4) persegipanjang dan yang terakhir adalah 5) segitiga siku-siku.ÃÂ Etnomatematika dari destinasiÃÂ Uma LenggeÃÂ dapat digunakan sebagai alat peraga dalam pembelajaran matematika Sekolah Dasar (SD) materi geometri/bangun datar dengan tujuan agar siswa mudah memahami materi yang disampaikan karena bahan ajar Uma LenggeÃÂ sudah dikenalÃÂ oleh siswa. Selain itu, siswa jugaÃÂ dapat mengenal lebih mendalam tentang destinasi Uma LenggeÃÂ sebagai warisan budaya suku Bima.
Allyl Alcohol Production by Conversion of Glycerol Over Supported Iron and Nickel Bimetallic Oxides
Authors: Martín Nancy , Rodríguez María de Lourdes , Viniegra Margarita , Solis-Casados Dora
Published: October 2020

Abstract. The study of catalysts based on iron, nickel, and iron-nickel oxides (Fe, Ni and FeNi) supported on a commercial mesoporous alumina is presented. The metal oxides were synthesized by the incipient wetness impregnation method. The samples were characterized by XRD, TPR-H2, Raman spectroscopy, XPS and N2 adsorption. The catalytic activity was evaluated in the dehydration-dehydrogenation reaction of glycerol in the gas phase. In the iron oxide and nickel oxide catalysts, the result of TPR-H2 showed that the presence of nickel influences the reduction of iron species. In the reaction, the catalysts showed similar conversion. However, the selectivity of the bimetallic oxide catalysts is modified, and the production of allyl alcohol increases noticeably forming a greater amount allyl alcohol than that observed in the monometallic oxides, in which a greater amount of hydroxyacetone is formed. The results indicate that the redox pairs Fe+3/Fe+2 influence the selectivity of these oxides. A decrease in the ratio Fe+3/Fe+2 species favored the formation of allyl alcohol.
 
Resumen. Se presenta el estudio de catalizadores basados en óxidos de hierro y níquel (Fe, Ni y FeNi) soportados en una alúmina mesoporosa comercial. Los óxidos metálicos se sintetizaron por el método de impregnación de humedad incipiente. Las muestras se caracterizaron por XRD, TPR-H2, espectroscopía Raman, XPS y adsorción de N2. La actividad catalítica se evaluó en la reacción de deshidratación-deshidrogenación de glicerol en la fase gaseosa. En los catalizadores de óxido de hierro y óxido de níquel, el resultado de TPR-H2 mostró que la presencia de níquel influye en la reducción de las especies de hierro. En la reacción, los catalizadores mostraron una conversión similar. Sin embargo, la selectividad en los catalizadores de óxidos bimetálicos se modifica formando una mayor cantidad de alcohol alílico que la observada en los óxidos monometálicos, donde se forma una mayor cantidad de hidroxiacetona. Los resultados obtenidos indican que los pares redox Fe+2/Fe+3 influyen en el comportamiento catalítico de estos óxidos, en la selectividad. Una disminución de la relación Fe+3/Fe+2 favorece la formación de alcohol alílico.
Volatile Composition and Antibacterial Activity of Leaves of Chorisia Speciosa
Authors: Kausar Farah , Intisar Azeem , Din Muhammad Imran , Aamir Aqsa , Hussain Tajamal , Aziz Pakeeza , Mutahir Zeeshan , Fareed Sahiba , Samreen Baria , Sadaqat Kashaf
Published: October 2020

Abstract. In this study, volatile composition of leaves of Chorisia speciosa was studied first time. The oil was extracted by microwave-assisted oil extraction and constituents were separated and characterized by gas chromatography - mass spectrometry. A yield of 0.21% was obtained and a total of 25 constituents were identified. Most dominating constituents were: caryophyllene (32.26 %), bicyclogermacrene (9.88 %), humulene (9.26 %), α-selinene (9.18 %) and β-elemene (8.06 %). The anti-bacterial activity of volatile oil was also evaluated against four pathogenic strains. The oil showed different zones of inhibition against different microbes where strongest activity was found against S. aureus (25 mm), moderate activity (15 mm) against E. coli and no activity against S. typhi (9 mm) at the dose value of 3.64 mg. The observed antibacterial activity was due to the presence of various biologically active major and minor constituents.
Assessing the Impacts of Climate Change on Crop Yields in Different Agro-climatic Zones of India
Authors: P Singh Naveen , Anand Bhawna , Srivastava S K , Rao K V , Bal S K , Prabhakar M
Published: October 2020

The study attempts to estimate and predict climate impact on crop yields using future temperature projections under two climate emissions scenarios of RCP 4.5 and 8.5 for three different time periods (2030s, 2050s and 2080s) across Agro-climatic zones (ACZ) of India. During the period 1966-2011, a significant rise was observed in both the annual mean maximum and minimum temperature across ACZs. Rainfall recorded an annual decline in Himalayan Regions and Gangetic Plains and a rise in Coastal Regions, Plateau & Hills and Western Dry Region. Our results showed high heterogeneity in climate impact on kharif and rabi crop yields (with both negative and positive estimates) across ACZs. It was found that rainfall had a positive effect on most of crop yields, but was not sufficient enough to counterbalance the impact of temperature. Changes in crop yield were more pronounced for higher emission scenario of RCP 8.5. Thus, it was evident that the relative impacts of climate change and the associated vulnerability vary by ACZs, hence comprehensive crop and region-specific adaptation measures should be emphasized that helps in enhancing resilience of agricultural system in short to medium term.
Retailers, You Can Get Omni-Shopper's Satisfaction!
Authors: Viejo-Fernández Nuria , Saha Sneha
Published: October 2020

This paper evaluates the influence that information processing routes have on omni-shopping behavior, as well as analyzing the consequences of this behavior for retailers through a cognitive-affective approach. A sample of 705 mobile phone users was used for this purpose. The results obtained using the binomial logit model in a first phase and later with an application of structural equations, reflect that omni-shoppers have a more planned purchasing behavior than those who develop a one-stop shopping behavior. They search for information in a rational and deep way, spending time and effort. As for the consequences that the omni-channel behavior has for retailers, it has been found that those omni-shoppers who experience negative emotions with the retailer, have a low perceived value of the company and their satisfaction will also be negative.
Machine Learning Approach to Mobile Forensics Framework for Cyber Crime Detection in Nigeria
Authors: Goni Ibrahim , Mohammad Murtala
Published: October 2020

The mobile Cyber Crime detection is challenged by number of mobile devices (internet of things), large and complex data, the size, the velocity, the nature and the complexity of the data and devices has become so high that data mining techniques are no more efficient since they cannot handle Big Data and internet of things. The aim of this research work was to develop a mobile forensics framework for cybercrime detection using machine learning approach. It started when call was detected and this detection is made by machine learning algorithm furthermore intelligent mass media towers and satellite that was proposed in this work has the ability to classified calls whether is a threat or not and send signal directly to Nigerian communication commission (NCC) forensic lab for necessary action.
Researching the Research: Applying Machine Learning Techniques to Dissertation Classification
Authors: Schmeelk Suzanna , Fields Tonya L. , Ellrodt Lisa R. , Freeman Ion C. , Haigler Ashley J.
Published: October 2020

This research examines industry-based dissertation research in a doctoral computing program through the lens of machine learning algorithms to determine if natural language processing-based categorization on abstracts alone is adequate for classification. This research categorizes dissertation by both their abstracts and by their full-text using the GraphLab Create library from Apple’s Turi to identify if abstract analysis is an adequate measure of content categorization, which we found was not. We also compare the dissertation categorizations using IBM’s Watson Discovery deep machine learning tool. Our research provides perspectives on the practicality of the manual classification of technical documents; and, it provides insights into the: (1) categories of academic work created by experienced fulltime working professionals in a Computing doctoral program, (2) viability and performance of automated categorization of the abstract analysis against the fulltext dissertation analysis, and (3) natual language processing versus human manual text classification abstraction.
The Law of Marine Fishing: Challenges and Coping Strategies for Sustainable Marine Fishing in Ghana
Authors: Justice Attobrah , Emmanuel Mensah Aboagye , Sandylove Afrane , Jeffrey Ampah Dankwa
Published: October 2020

Waters off the coasts of West Africa are very rich with many different types of fish and marine life. Some species like sardines, tuna, mackerel, tilapia and shrimps are important to many local communities and economies in West Africa. However, the current overfishing of these fish affects the sustainability of fishery industry. Despite Ghana ratifying to a number of international marine laws to ensure a sustainable marine fishing, there seem to be some challenges that are associated with marine fishing in Ghana. This paper further examines the strategies that have been employed by the fishing community and the fisheries ministry in Ghana as a response to restrictive measures for the challenges identified and discussed in literature. This paper is fundamentally an extensive review of marine fisheries literature. In general terms, it was found that, Ghana has ratified to a number of international marine laws including the UNCLOS.
Engineering Geological and Geotechnical studies of Taprang landslide, west-central Nepal: An approach for slope stability analysis
Authors: Sigdel Ashok , Adhikari Radha Krishna
Published: October 2020

Detailed investigation of Taprang landslide was carried out in order to understand the surface, subsurface lithological information and physical properties of soil by using multi-disciplinary methods such as engineering geological, geophysical and geotechnical studies for the determination of factor of safety for slope stability analysis.  Geological study was carried out by detail mapping of surface geology, soil condition, properties of bedrock and its discontinuities. The geophysical survey (Electrical Resistivity Tomography-ERT) were carried out to know the electrical resistivity of soil for identifying the groundwater table and hence slip surface of the landslide. Geotechnical analysis such as grain size analysis, liquid limit and direct shear test were carried out in order to evaluate soil classification, moisture content, cohesion and the angle of internal friction of soil for knowing the strength the soil. These soil parameters indicate the soil is very low strength. The combination of these results were used for calculating the factor of safety (FoS) by Limit Equilibrium Method (LEM) proposed by Bishop and Janbu methods. The result of factor of safety in the Taprang landslide demonstrates that the slope become stable in drained (dry) condition, remain ultimate stage in undrained (wet) condition and finally failure occurs if applied the seismic load in both drained and undrained conditions.
Perbandingan Kemampuan Aerasi Sembur (Spray) dengan Metode Adsorpsi Menggunakan Adsorben Serbuk Kulit Buah Kakao untuk Menurunkan Kadar Besi dan Mangan Pada Air Sumur Gali
Authors: Harimu La , Haetami Aceng , Sari Citra Purnama , Haeruddin Haeruddin , Nurlansi Nurlansi
Published: October 2020

Research on the use of the spray aeration method with adsorption of cocoa rind powder to reduce iron and manganese levels in dug well water has been carried out. This study aims to make comparisons from two methods to reduce iron and manganese in dug well water. The parameters optimized in this study are the aeration time and the variation of the addition of the adsorbent mass and the adsorption time. Based on the research results, the spray aeration time for 2 hours gave the optimal percentage reduction for Fe3+ and Mn4+ metal ions, namely 98.68% and 94.22%. Meanwhile, for adsorption using cocoa pod husk powder, the optimal reduction occurred in the adsorbent mass of 0.2 grams and the adsorption time of 60 minutes for iron and manganese 96.36% and 95.15%, respectively.