bluuebunny/crossref_metadata_2025 huggingface dataset:
Penggunaan Media Geogebra dalam Pembelajaran Geometri Ruang untuk Meningkatkan Minat dan Hasil Belajar Mahasiswa
Authors: Wondo Maria Trisna Sero , Mei Maria Fatima , Seto Stefania Baptis
Published: July 2020

Penelitian ini bertujuan untuk mengetahui aktivitas, minat, dan hasil belajar mahasiswa program studi Pendidikan Matematika Universitas Flores menggunakan media Geogebra dalam pembelajaran geometri ruang. Jenis penelitian adalah penelitian tindakan kelas yang terdiri dari dua siklus. Tiap siklus terdiri dari empat tahap, yakni perencanaan, pelaksanaan, observasi, dan refleksi. Subyek penelitian ini adalah mahasiswa Program Studi Pendidikan Matematika sebanyak 24 orang. Teknik pengumpulan data menggunakan teknik observasi, tes dan angket. Data yang dikumpulkan dianalisis menggunakan analisis deskriptif. Hasil analisis menunjukkan adanya peningkatan minat belajar mahasiswa dari pra siklus ke siklus I 1,37%, dari siklus I ke siklus II 0,8%. Hasil observasi pra siklus, semua aspek pada aktivitas mahasiswa belum mencapai target yang diinginkan, sedangkan siklus I semua aspek pada aktivitas mahasiswa belum mencapai target yang diinginkan kecuali pada aktivitas mengerjakan tugas. Siklus II, semua aspek aktivitas mahasiswa sudah mencapai target yang diinginkan. Nilai rata-rata hasil belajar pra siklus diperoleh 63,9 dan persentase ketuntasan klasikal 70,83%, sedangkan pada siklus I memperoleh nilai rata-rata 65,8 dengan ketuntasan belajar klasikal 75%. Siklus II nilai rata-rata hasil belajar 70,2 dengan ketuntasan klasikal 87,5%. Berdasarkan hasil analisis di atas dapat disimpulkan bahwa ada peningkatan aktivitas, minat, dan hasil belajar mahasiswa dalam pembelajaran Geometri Ruang menggunakan Media Geogebra.
Pengaruh Model Pembelajaran Kooperatif Tipe STAD dan Gaya Belajar Terhadap Hasil Belajar Matematika
Authors: Amin Sabri , Kamid Kamid , Muhaimin Muhaimin
Published: July 2020

Tujuan dari penelitian ini  untuk mengetahui pengaruh model pembelajaran kooperatif tipe STAD dan gaya belajar terhadap hasil belajara siswa. Penelitian ini menggunakan quasi eksperimen dengan rancangan non equivalen pretest and posttest control group design. Pengumpulan data menggunakan instrumen tes untuk melihat hasil belajar matematika, dan angket untuk melihat gaya belajar siswa. Analisis data menggunakan uji non parametrik Kruskal- Wallis pada taraf signifikan 5%. Hasil penelitian menunjukkan; (1) terdapat pengaruh pembelajaran yang menggunakan model kooperatif tipe STAD dapat dilihat dari hasil uji hipotesis Kruskal-Walis adalah nilai Asyim.sig < 0,05 maka dapat diketahui bahwa 0,018 < 0,05 sehingga terdapat pengaruh  model pembelajaran kooperatif tipe STAD terhadap hasil belajar matematika siswa SMP Negeri 19 Kerinci; (2) tidak terdapat pengaruh gaya belajar terhadap hasil belajar matematika siswa SMP Negeri 19 Kerinci berdasarkan hasil uji dapat dilihat dari nilai Asym.sig > 0,05 maka dapat diketahui bahwa 0,980 > 0,05 sehingga tidak terdapat pengaruh gaya belajar terhadap hasil belajar siswa; (3) tidak terdapat interaksi antara model pembelajaran koperatif tipe STAD dan gaya belajar siswa SMP Negeri 19 Kerinci; (4) rata-rata hasil belajaran kelas yang menggunakan model STAD 68,29, kelas yang menggunakan model STAD dengan media 69,34, dan sedangkan kelas yang menggunakan pedekatan konvensional 61,04.
ANALYSIS OF THE ROLE OF FINTECH AND FINANCIAL LITERATION ON BUSINESS PLAYERS IN CILEDUG TANGERANG REGION
Authors: Triyani Budyastuti
Published: July 2020

This study aims to analyze the role of fintech and financial literacy in business operators in the Ciledug area of Tangerang. In this study, researchers took a random sample of business people who are in the Ciledug Village, Tangerang. Analysis of the data used in this study is to use data reduction in the presentation of thendata and the last is a conclusion. The results of this study are, in general, informants do not understand what is fintech, they only know online payments such as ovo, funds, paypal, etc. They do not know that online payment is included in fintech. Business owners also dislike borrowing money for venture capital from fintech because of its large interest. The owner generally prefers to make a personal loan or through banking.
For financial literacy, they have more or less understood that financial management is important. And some owners have prepared their future well. Preparing an education fund for children, having an emergency fund, having self and family health insurance are their capital for the future.
KEYWORDS: Fintech, Financial Literacy, Business Players
OPPORTUNITIES AND CHALLENGES ON CONSERVATION OF AMBATARA PROTECTED AREA, SEDE MUJA DISTRICT, ETHIOPIA
Authors: Haile Zerfu Munaw
Published: July 2020

Protected areas (PAs) are designated areas that are protected because of their environmental, cultural, or other worth. It plays a vital role in biodiversity conservation. Ethiopia has more many PAs, which cover 17.1% of the nation, protected to gain benefits for livelihoods at the local, regional and country level but the value obtained from the protected areas is very low.
An effective conservation of management practice for protected areas is one of the selected approach to make the harmony relationship between PAs and the local community in a given ecosystem. However, its practical implementation in protected areas through community method is the major challenge in Ethiopia. This study described the main opportunities and challenges of Ambatara protected Area (APA), Sede Muja District, Ethiopia.
Data were collected and organized by the household survey, key informant interview, field observation and focused group discussion (FGD) methods using both primary and secondary data sources in the form of qualitative, quantitative, or both from July 2019 to September 2019.
The results were explained the socioeconomic, opportunities and challenges. The establishment of community-based PA management in Ethiopia, proclamation and regulations of wildlife managements of Ethiopia, and natural recovery ability of the area were its potential opportunities whereas, local community -wildlife conflict, conflicting between the APA management & local community, inadequate coordination among stakeholders, and challenges & threats of APA were the main challenges of APA conservation.
KEYWORDS: APA, opportunities and challenges, local community, PA
SCHOOL BASED MANAGEMENT: SOLUSI ALTERNATIF PENINGKATAN MUTU MANAJEMEN MADRASAH
Authors: Faizin Moh
Published: July 2020

Realisasi terhadap desentralisasi pendidikan di tingkat sekolah adalah diberikannya otonomi yang luas dalam pengelolaan sumber daya yang ada. Pemberdayaan sekolah, di samping untuk memenuhi tuntutan desentralisasi, juga ditujukan sebagai sarana peningkatan efisiensi, mutu, dan pemerataan pendidikan. Di Indonesia, bentuk otonomi sekolah tersebut akan dilaksanakan dalam konteks “School Based Management” (SBM), di mana selain memiliki otonomi yang luas, sekolah wajib mengikutsertakan masyarakat dalam pengelolaan, dan pengelolaan sekolah dilakukan dalam kerangka kebijakan nasional. Penelitian ini dikategorikan sebagai penelitian yang bersifat kualitatif-deskriptis yang menggunakan pendekatan studi kasus. Dan untuk mendapatkan data-datanya, diperlukan metode wawancara, observasi dan dokumentasi. Sedangkan dalam menganalisa digunakan analisa data SWOT Analisis (Strength, Weakness, Opportunity, Threat) yang mempertimbangkan faktor kekuatan, kelemahan, peluang dan ancaman. Dari penelitian yang dilakukan dihasilkan kesimpulan, pertama School Based Management (SBM) merupakan alternatif yang dapat diterapkan dalam mengelola sekolah/madrasah. Kedua, penerapan SBM pada beberapa sekolah unggulan ternyata amat bervariasi jika dilihat dari sudut strategi pelaksanaan dan hambatan yang dihadapi. Ketiga, hambatan yang dihadapi tersebut dalam melaksanakan SBM meliputi: rendahnya partisipasi masyarakat, rendahnya kualitas SDM dan faktor eksternal. Keempat, di samping hal yang dapat menghambat penerapan SBM, ada peluang yaitu SDM yang memadai, dukungan partisipasi masyarakat serta konteks sosial yang cenderung untuk menyekolahkan anaknya di madrasah.
Do Members of Disadvantaged Groups Possess a Motivation of Favouritism towards Advantaged Groups?
Authors: Akdoğan Nuri , Alparslan Kenan , Alparslan Kenan
Published: July 2020

There are several studies suggesting that disadvantaged groups display positive attitudes towards advantaged groups. System Justification Theorists have conceptualised that attitudes as out-group favouritism, whereas Social Identity Theorists have described it as the attitude of members identifying with the advantaged group, reflecting in-group favouritism. As the level of participants’ identification with both groups is not measured in those studies, it is not clear enough which theory they support. This study, conducted with 145 people living in Turkey and define themselves as Kurdish, aims to examine the attitudes of the participants towards the disadvantaged Kurdish in-group and the advantaged Turkish out-group in terms of the participant’s level of identification with both groups and the identity management strategies (individual mobility, social competition, superordinate re-categorisation) followed by the participants. For this purpose, the participants dividing into three clusters depending on their level of identification with both groups were compared in terms of their intergroup attitudes and the strategies they followed. The results indicated that the participants who identified with the Turkish group on a higher level had favouritism towards Turks and followed the individual mobility and superordinate re-categorisation strategies. On the other hand, the participants who identified with the Kurdish group on a higher level had favouritism towards Kurds and followed the social competition strategy. These results support Social Identity Theory, suggesting that disadvantaged group members’ positive attitudes towards advantaged groups reflect in-group favouritism, not out-group favouritism. This is because they identify themselves through advantaged groups as a result of certain strategies.
Effect of Child Labour on Children’s Education in Katsina State, Nigeria
Authors: Abdu A. , Rabiu I. , Usman A. L.
Published: July 2020

Child Labour has become devilishly ubiquitous with negative implications on Nigerian child’s development. Unfortunately, most researches concentrated on child labour issues at national level while little exists in literature at state level particularly Katsina. The study investigated effect of child labour on children’s education in Katsina State using descriptive survey design. Multi-stage sampling technique was used to select 216 child labourers from three senatorial districts of Katsina States. Structured interview schedule was used to collect data on respondents’ socio-economic characteristics, involvement in child labour, causes and effect. Descriptive and inferential statistics were used in analysing data. Level of child labour in the State was high. Poverty, lack of uniform, books and problem of transportation fare were push factors. Majority perceived effect of child labour on education to be unfavourable. Being too fatigued for school work and to read, constrained enrolment in school, inability to recall learned experience and dropped out, lack of appraisal ability and disruption of school attendance were major effects. Significant correlation existed between level of involvement in child labour, causes and perceived effects on education. Family type and mother’s occupation showed significant relationship with effect. Causes of child labour involvement were major determinants of effect. Result provided support to show that level of child labour involvement was worrisomely high. Total free and compulsory primary and secondary education in the state should be taken serious and sanctions mated to parents who may attempt to deny their children schooling opportunity.
Sexual Communication between Parents and Adolescents: Perception of Secondary School Students in Abeokuta, Ogun State, Nigeria
Authors: Ariyo Adijat Motunrayo , Sotayo Ojubayo Motunrayo , Olurin Temitayo Kofoworola , Eni-Olorunda Tolu
Published: July 2020

This study assessed the characterization of parent-adolescents’ sexual communication of secondary school students in Abeokuta South Local Government of Ogun State, Nigeria. 411 adolescents were selected using multistage sampling techniques. Quantitative data was obtained with a semi-structured questionnaire. An in-depth interview was carried out to further explore parent-adolescent sexual communication as a representation of the qualitative data. Both quantitative and qualitative data collected were analysed using descriptive and thematic content analyses. Results revealed that most (64.5%) of the respondents had moderate perception of parent-adolescent communication. The findings of the qualitative analysis revealed themes of sexual communication including puberty, abstinence from sex, and HIV/AIDS. Parents’ awareness to sexual communication promoting was associated to physical changes during puberty and adolescents’ attitudes. Although, adolescents prefer to discuss sexual issues with their mothers, time factor for such discussion was a major constraint. In addition, adolescent perceived unwillingness on the part of parent to initiate or sustain sexual communication issues despite their knowledgeability. Adolescents perceived that their parents are knowledgeable about sexual communication but not willing to communicate sexual issues with them. The study concludes that parents’ unwillingness for sexual talk and time factors could pose threats to achieving effective parent-adolescent sexual communication. Hence, it is recommended that parents should engage in timely communication on sexual related issues often during early adolescence phase. It is imperative for fathers also, to create a conducive atmosphere for active sexual communication with their children especially male adolescents.
The Impact of Pandemic Crisis on the Survival of Construction Industry: A Case of COVID-19
Authors: Gamil Yaser , Alhagar Abdulsalam
Published: July 2020

Since the World Health Organization (WHO) announced the coronavirus 2019 (COVID-19) outbreak as a pandemic, many countries have declared a complete national lockdown after a remarkable spike in COVID 19 cases. These decisions have restricted the movement of people and resulted in a complete shutdown of many businesses across many sectors. The construction industry, as a significant growth driver of the economy with no exception, has also been completely shut down. All the developments and projects were postponed until further notice. It is, therefore, a prudent to address the impact of the pandemic at the outset and end of the crisis to prepare for any future possibility and gain lessons for plans. This study aims to investigate the effect of COVID 19 on the construction industry's survival. The impacts and fallout have been determined and evaluated through the recruitment of construction experts and practitioners. The impacts have been classified into different groups which include economic, human resources. The study implied two methods include exploratory interviews and questionnaire surveys. The study found the most prominent impacts of COVID 19 are the suspension of projects, labour impact and job loss, time overrun, cost overrun, and financial implications. The findings of this study shed light on the consequences of the sudden occurrence of pandemic and raise awareness of the most critical impacts which can’t be overlooked. The findings also help project stakeholders to realise the sequences of the sudden epidemic and prepare for the worst-case scenario during the planning stage of the construction projects.
Ranking the Success Factors to Improve Safety and Growth of Artichoke Medicinal Plant Using Fuzzy Analytic Hierarchy Process
Authors: Rezaeian Javad , Talebi F. , Foroutan R. Alizadeh
Published: July 2020

Today, the use of herbal medicine like artichoke is rapidly increasing worldwide. The consumption of artichoke as a food source is raising too. Therefore, it is necessary to determine the main factors affecting the growth of this plant which is investigated in this study. A comprehensive analysis of the literature is performed to detect these factors. A fuzzy Analytic Hierarchy Process (AHP) is employed to prioritize the factors. Results indicate that the conditions of irrigation and soil are the most important ones. In addition, the best conditions for artichoke growth are the medium level of irrigation, soil with suitable drainage, low temperature and sufficient sunlight.
Management of By-Product Created by Lye-Sodium Brine Purification Method Using Carbonization
Authors: Iwański Paweł , Igliński Bartłomiej , Piechota Grzegorz
Published: July 2020

The article presents carbonization as a method of waste management from the brine sodium-lime method. It was compared with the previously obtained results for the lye-sodium one. Within it, the fltration and washing times were contrasted for treated and non-carbonised samples. For this aim potentiometric titration analysis was used to determine the precipitation's basic components and by-product brine. Scanning electron microscope with energy dispersive X-ray spectrum and diﬀractographic analysis were used for morphology analysis what allowed to determine the tested samples' composition. It was found that despite significant differences in the time of washing and filtration, the time of these processes is shortened after the suspension has been exposed to carbon dioxide. In both cases the composition allows the waste brine to be recycled to the purifcation processes and the mixture of calcium and magnesium compounds become alternative raw material. It turned out that in both methods it is possible to utilize the suspension formed.
Silver nanoparticles affect germination and photosynthesis in tobacco seedlings
Authors: Biba Renata , Cvjetko Petra , Balen Biljana , Pavoković Dubravko , Šikić Sandra , Peharec Štefanić Petra , Tkalec Mirta
Published: July 2020

Extensive commercialization of silver nanoparticles (AgNPs) raises the risk of their accumulation in the soil-plant system. Once released into the environment, AgNPs are prone to chemical transformations, which make
it hard to determine whether their phytotoxic effects are purely NP-related or a consequence of released Ag+ ions. In this study the effects of 25, 50, 75, 100 and 150 μM AgNPs and AgNO3 on seed germination and early growth of tobacco (Nicotiana tabacum L.) seedlings
were compared. Additionally, the effects on photosynthetic performance and pigment content were investigated. Germination rate and index values
indicated delayed and slower germination in some AgNP treatments. Lower
AgNP concentrations stimulated root growth, but induced a prominent reduction in fresh weight. By contrast, all AgNO3 concentrations inhibited root growth but only the higher ones decreased fresh weight. Obtained results imply that the observed AgNP toxicity could be ascribed
to NP form and can be correlated with high AgNP stability in the solid medium. On the other hand, the majority of AgNP and AgNO3 treatments induced an increase in chlorophyll content that was accompanied by significantly lower values of relative electron transport rate and coefficient of photochemical quenching, implying an inhibition of the electron transport chain. A similar impact of AgNPs and AgNO3 on photosynthesis can be correlated with lower stability of AgNPs in a liquid medium, resulting in AgNP aggregation and dissolution of Ag+ ions.
PENGARUH PUPUK NPK PHONSKA TERHADAP PERTUMBUHAN DAN HASIL TUMPANG SARI CABAI (Capsicum annum L.) DAN BAWANG MERAH (Allium cepa L.)
Authors: Hutubessy Josina Irene Brigetha
Published: July 2020

Red chili (Capsicum annuum L.) is one of the vegetable commodities that has bright prospects and market demand continues to increase along with the increase in population, but until now the chili has not been able to meet the needs of the community. Efforts to increase production to meet needs that cover quality and quantity can be done by planting intercropping and fertilizing NPK Phonska. This study aims to determine the effect of NPK Phonska fertilizer on the growth and yield of intercropping of optimal chili and shallot plants. The experimental design used a Randomized Block Design (RBD) with a single factor pattern consisting of 5 NPK Phonska fertilizer treatments, namely BC0 = 0 kg ha-1 (control), BC1 = 300 kg ha-1, BC2 = 600 kg ha-1, BC3 = 900 kg ha-1, BC4 = 1200 kg ha-1. Non-destructive data collection is carried out. F test level 5% to test the effect of treatment, the difference between treatments was based on 5% BNT Value. The results showed that administration of NPK Phonska fertilizer had a very significant effect on chili plants, namely on growth variables and yields of plant height 26.14 cm, number of leaves of 15.11 strands, leaf area of ??11.86 cm2 and plant high onion 33, 34 cm, number of leaves 33.14 strands. The optimum dose of NPK Phonska fertilizer which provides optimal growth and yield of intercropping of chili and shallot plants is 1200 kg ha-1.
PENGARUH DOSIS PUPUK KANDANG SAPI TERHADAP SIFAT FISIK DAN KIMIA TANAH PADA TANAMAN KACANG TANAH (Arachis Hypogaea L.)
Authors: Wawo Viktor
Published: July 2020

The Effect of Dosage Organik Fertilizer on Physical Properties  and Land Chemistry in Soan Beans (Arachis Hypogaea L.). This Research Aims To: Determine The Effect Of Cow Manure Does On Soil Physical Properties Of Peanut Plants. Knowing The Effect Of Cow Manure Does On Soil Chemical Properties In Peanut Plants. To Know Optimum Dose Of Cow Manure Can Affect Physical And Chemical Properties Of Soil Peanut Plant.

The treatments used in this study were Pk0 (0 Ton Ha-1 or without Cow Manure), Pk1 (10 Ton Ha-1 Cow Manure), Pk2 (20 Ton Ha-1 Cow Manure), Pk3 (30 Ton Ha- 1 Cow Manure, Pk4 (40 Ton Ha-1 Cow Manure). The Observing Variables in This Study are Soil Physical Properties Variables, which include Bulk Density (G Cm-3) and Total Soil Pore Space (%), And Soil Chemical Properties Variables That Cover N-Total Soil, P-Soil Available, K-Available Soil, C-Organic Soil, And Ph Soil.

Research Results Show That Giving Cow Cage Fertilizer in Peanut Plants In General Has an Effect of Improving Soil Physical Properties in the Form of Increasing Soil Volume Weight and Total Soil Pore Space, Giving Cow Cage Fertilizer in Peanut Plants Generally Affecting Improving Soil Chemical Properties in the Form of Increasing N-Total , P-Available, K-Available, C-Organic And Soil Ph As Well As The Optimum Dose Of Cow Manure That Can Improve The Physical And Chemical Properties Of Soil In The Best Peanut Plants Are 40 Tons / Ha.
Metáforas del coronavirus: más allá de la psicologización
Authors: Pavón-Cuéllar David
Published: July 2020

El artículo aborda la idea común de que las personas pueden protegerse del coronavirus al fortalecer un sistema inmune psicológico. Esta idea es examinada críticamente como un ejemplo de psicologización de la enfermedad física. La psicologización es impugnada con argumentos aportados por Susan Sontag, pero descartándose tanto su adhesión al discurso de la ciencia como su rechazo de cualquier metáfora de la enfermedad. Recurriéndose a Jacques Lacan y a Kōjin Karatani, se defiende la tesis de que una enfermedad como la provocada por el coronavirus es siempre metaforizada en todos los discursos, incluidos los de la psicología, la política e incluso la ciencia médica. Estos tres discursos son asimilados al capitalismo y se les opone otra discursividad no menos metafórica, pero en la que no se usurpa el lugar de los sujetos y de sus cuerpos, los cuales, tal como fueron concebidos respectivamente por Marx y por Spinoza, resultan indispensables para subsistir y resistir contra la devastación capitalista.
Marcador somático y toma de decisiones en operadores de Aeronaves Remotamente Tripuladas
Authors: Corzo Zamora María Alejandra , Díaz Ariza Alexander , Rodríguez Guerrero Nohora Inés
Published: July 2020

Antecedentes: La interfaz remota de las Aeronaves remotamente tripuladas (ART) reduce la percepción directa del entorno operacional propiciando el error humano en cerca del 35% de los eventos de seguridad reportados, por lo que el estudio de la toma de decisiones de sus operadores es necesario. Objetivo: Describir el funcionamiento neuropsicológico y las respuestas fisiológicas asociadas que participan en la toma de decisiones en los operadores de ART para establecer las diferencias entre los operadores según su experiencia en la operación del equipo. Método: Estudio no experimental, de corte transversal correlacional-causal. Se realizó monitoreo fisiológico (EDA y HRV), y electroencefalográfico (EEG) en misiones del simulador de Scan–Eagle, y se administró la batería BANFE-2 e IGTv2. Resultados: 17 operadores masculinos de 28±2.7 años fueron evaluados. Los operadores con < 500 horas de vuelo presentan una actividad cerebral frontal de predominio dorsolateral con pensamiento reflexivo, y aquellos con > 500 horas de vuelo presentan una actividad cerebral frontal de predominio medial y orbital con pensamiento automático y toma de decisiones intuitiva. Se encontró relación entre los tiempos de ejecución durante las misiones simuladas, el desempeño en IGTv2, y la EDA. Conclusión: La EDA se identifica como marcador somático en los operadores que puede permitir la evaluación de la toma de decisiones, el seguimiento de entrenamientos para propiciar un pensamiento más intuitivo a menor horas de vuelo y el desarrollo de sistemas de detección temprana de riesgo como asistencia en la toma de decisiones durante la operación.
Ordovician gastropods from pebbles in Cretaceous fluvial
sandstones in south-east Disko, West Greenland
Authors: Peel John S.
Published: July 2020

The gastropods Sinuopea sp. and Lecanospira cf. compacta (Salter 1859) of probable early Ordovician age are described from cherty limestone clasts within fluvial strata of the Cretaceous Atane Formation of south-east Disko, central West Greenland. The record of Sinuopea possibly suggests an earliest Ordovician (Tremadocian) age, slightly older than the Floian–Dapingian age suggested by the oldest known conodont assemblages described from West Greenland. The determinations provide supporting evidence for a former periodic cover of Ordovician strata in the Archaean terrane of south western Greenland, extending deep into the heart of the Laurentian landmass.
One-pot synthesis of oxazolidinones and five-membered cyclic carbonates from epoxides and chlorosulfonyl isocyanate: theoretical evidence for an asynchronous concerted pathway
Authors: Demir Esra , Sari Ozlem , Çetinkaya Yasin , Atmaca Ufuk , Sağ Erdem Safiye , Çelik Murat
Published: July 2020

The one-pot reaction of chlorosulfonyl isocyanate (CSI) with epoxides having phenyl, benzyl and fused cyclic alkyl groups in different solvents under mild reaction conditions without additives and catalysts was studied. Oxazolidinones and five-membered cyclic carbonates were obtained in ratios close to 1:1 in the cyclization reactions. The best yields of these compounds were obtained in dichloromethane (DCM). Together with 16 known compounds, two novel oxazolidinone derivatives and two novel cyclic carbonates were synthesized with an efficient and straightforward method. Compared to the existing methods, the synthetic approach presented here provides the following distinct advantageous: being a one-pot reaction with metal-free reagent, having shorter reaction times, good yields and a very simple purification method. Moreover, using the density functional theory (DFT) method at the M06-2X/6-31+G(d,p) level of theory the mechanism of the cycloaddition reactions has been elucidated. The further investigation of the potential energy surfaces associated with two possible channels leading to oxazolidinones and five-membered cyclic carbonates disclosed that the cycloaddition reaction proceeds via an asynchronous concerted mechanism in gas phase and in DCM.
HISTORIOGRAFÍA LITERARIA Y FOLLETÍN
Authors: Martí-López Elisa
Published: July 2020

Sin información.
National Institute of Justice’s Forensic Technology Center of Excellence 2019 National Opioid and Emerging Drug Threats Policy and Practice Forum
Authors: Norsworthy Sarah , Shute Rebecca , Daye Crystal M. , Presler-Jur Paige
Published: July 2020

The National Institute of Justice (NIJ) and its Forensic Technology Center of Excellence (FTCoE) hosted the National Opioid and Emerging Drug Threats Policy and Practice Forum on July 18–19, 2019, in Washington, DC. The forum explored ways in which government agencies and programs, law enforcement officials, forensic laboratory personnel, medical examiners and coroners, researchers, and other experts can cooperate to respond to problems associated with drug abuse and misuse. Panelists from these stakeholder groups discussed ways to address concerns such as rapidly expanding crime laboratory caseloads; workforce shortages and resiliency programs; analytical challenges associated with fentanyl analogs and drug mixtures; laboratory quality control; surveillance systems to inform response; and policy related to stakeholder, research, and resource constraints. The NIJ Policy and Practice Forum built off the momentum of previous stakeholder meetings convened by NIJ and other agencies to discuss the consequences of this national epidemic, including the impact it has had on public safety, public health, and the criminal justice response. The forum discussed topics at a policy level and addressed best practices used across the forensic community.
COMPARISON OF PRODUCTION COSTS IN PEQUI CULTURE (Caryocar brasiliense Camb.)
Authors: Ventura Matheus Vinicius Abadia , Batista Hellen Regina Fernandes , Bessa Marcio Moacir
Published: July 2020

The cerrado is one of the main biomes belonging to the Brazilian territory. Among the species present in this biome is the pequizeiro (Caryocar brasiliense Camb). In general, even with extractive exploitation, several families benefit from the pequi crop, with culture as a source of income and employment, and up to 57% of the annual income of rural workers in the cerrado is evidenced by the commercialization of fruits in the region. In view of this, the objective of this work was to compare the production costs of the pequizeiro in four Brazilian cities, Pocone, in Mato Grosso, Japonvar, in Minas Gerais Iporá, in Goias and Crato, in Ceará in the agricultural years 2017 and 2018. The greatest reduction in production costs, per marketing unit and per hectare of the agricultural year from 2017 to 2018 was in the municipality of Japonvar, MG. In the municipality of Iporá, GO, there was an increase in the production cost per marketing unit and per hectare of the agricultural year from 2017 to 2018. The municipality of Japonvar, MG, among the cities analyzed, has the highest profitability in the pequizeiro culture.
Creative Problem Solving Technique Application Areas of TRIZ: Suggestions for Use in Healthcare Sector
Authors: GUNER Seyma , KOSE Ilker
Published: July 2020

The aim of the study is to determine the frequency and usage of the TRIZ method, which companies have recently used in order to develop creative solutions to the problems of the sector, and to offer suggestions that will increase the use of TRIZ in the healthcare sector by emphasizing their effectiveness in practice. In the study, two separate literature scans were made. Firstly, academic publications published between 2004-2019 with the main themes of “TRIZ” and “Contradiction Matrix” were scanned through the Web of Science database and a total of 161 publications were reached. Relevant publications have been analyzed by scientific fields and the scope of the study has been expanded a bit to further detail its use in the healthcare sector, and the Google Scholar database has been examined in the second scan. As a result of the study; Although TRIZ is a method used mostly in technical fields, it has been observed that it has been used in the service sector in recent years. As the reason why TRIZ is not widely used in the service sector, it is seen that TRIZ parameters mostly evoke technical fields. In order to benefit from the effectiveness and benefits of TRIZ method in practice, the health services sector is also recommended to harmonize TRIZ methodologies for use in the service sector.
Design and Peformance Test of Coconut Skin Testa Peeling Machine
Authors: Putra Yukodharma , Rimawan Erry , Rusdi Ahmad , . Andrianto
Published: July 2020

Coconut nicknamed "Tree of Life" because it is a multi-purpose agricultural commodities in which all parts of the coconut plants are beneficial to humans. One of the results of the coconut is coconut oil. To get the oil required several processes such as coconut testa peeling the skin. Coconut testa skin peeling process is still done manually using a special knife that takes time and considerable manpower. In addition, there is a risk of a knife scraped manually peeling process. It required skinner testa machine to increase production capacity and avoid the risks that occur when using the manual method. Skinner testa machine design results can peel testa with peeling efficiency of 90% with the time it takes for 15 minutes to peel as many as 20 coconuts. Costs for skin peeling coconut testa che
An Uplifted over Logistics Costs Efficiency by the Hub and Spoke System at Cikarang Dry Port
Authors: . Nuh , Santoso Sugeng
Published: July 2020

This research aimed to discovered and analyzed those efficiency of logistics costs by hub and spoke system at Cikarang dry port that provides ports which included logistics services with logistics companies and supply chains so it would contributes to reducing logistics costs and dwelling time at Tanjung Priok Port. This research uses Factor Analysis and AHP (Analitycal Hierarchy Process) method as a method to find out all factors which influence most towards logistics performance and how to reduce those logistics costs at Cikarang Dry Port. Factor Analysis result starting from 14 elements into 8 elements which divided into 3 factors such as transportation, administration and inventory costs. The weight of loading and unloading costs is 0.24709, the weight of container costs is 0.20384 and the weighting of stacking fees is 0.14429. So AHP results was obtained from factors and elements of logistics costs Cikarang Dry Port which has most influence are F1 (loading and unloading costs), F6 (custom service fees), F8 (forwarding service costs), F2 (goods inspection service costs), F4 (stacking fees) , F12 (service quality that needs to be improved), F3 (container tariffs), F5 (loading and unloading labor rates).
Improvised Guard for Next Level Security Automated Vehicle Security System using Artificial Intelligence and Convolutional Neural Network
Authors: John Joel M , Issac Noel Phillip , Thomas Jerin , Alexander Subin , B S Syamraj
Published: July 2020

This paper details fully automated vehicle security system involving vehicle model, make detection, driver face recognition and parking system guided by a virtual assistant. The core technology of the system is built using a sequence of deep Convolutional Neural Networks (CNNs). This system performs face recognition of the driver and vehicle model, make detection and permit access by opening barrier gate. This allows bigger organizations to control and monitor vehicle traffic as well as gain user data for security purpose. For quantitive analysis, we show that our system outperforms the leading vehicle security system. Proposed paper project website is also available at http://www.astound.ga/igns.
Automatic Movable Smart Road Dividers - IOT Based Solution to Traffic Congestion Problems
Authors: A J Keerthan , H D Likhith , H S Chetan , K P Kiran , MN Dr. Sumaiya
Published: July 2020

The street dividers are commonly utilized for separating the street for continuous and approaching traffic. This is useful in keeping the progression of traffic. For this situation, there is equal number of lanes for both approaching and continuous traffic. Be that as it may, in certain zones, such as in industrial or shopping zones the traffic for the most part streams a one way in the first part of the morning or night. The other roadside is unfilled or unused. It leads to time loss for public and congested driving conditions. We mean to assemble a shrewd street divider as far as a mechanized street divider which moves or move the path coordinating the surge in rush hour gridlock. Such kind of component of traffic framework spares time as well as fuel. It can include 1 more path based the traffic in the specific bearing. With the more intelligent application planned underneath, manual reliance and manual traffic relation is decreased. Like this a proposition of savvy traffic is worked in less, medium and more density in the rush hour gridlock will be appeared in IOT server in utilizing grap diagram. IoT refers to Internet of Things where real digitalization comes into the image. The sensors and Arduino boards are utilized. The sensors are placed on the dividers which sense the progression of traffic and it is refreshed to the web through Wi-Fi module associated. The traffic density will be appeared in IoT server in utilizing graph chart. It gives a superior answer to traffic issue.
A Collection of Thoughts
Authors: Glavee Ivy
Published: July 2020

Curated by Triya Chakravorty
Only the Wearer Knows where the Mask Pinches
Authors: Chugh Mukesh
Published: July 2020

Curated by Triya Chakravorty
MOSEL: Strong [Oiii] 5007 Å Emitting Galaxies at (3 < z < 4) from the ZFOURGE Survey
Authors: Tran Kim-Vy H. , Forrest Ben , Alcorn Leo Y. , Yuan Tiantian , Nanayakkara Themiya , Cohn Jonathan , Cowley Michael , Glazebrook Karl , Gupta Anshu , Kacprzak Glenn G. , Kewley Lisa , Labbé Ivo , Papovich Casey , Spitler Lee , Straatman Caroline M. S. , Tomczak Adam
Published: July 2020

To understand how strong emission-line galaxies (SELGs) contribute to the overall growth of galaxies and star formation history of the universe, we target SELGs from the ZFOURGE imaging survey that have blended Hβ+[O iii] rest-frame equivalent widths of >230 Å and 2.5 < 

 < 4.0. Using Keck/MOSFIRE, we measure 49 redshifts for galaxies brighter than K

s
 = 25 mag as part of our Multi-Object Spectroscopic Emission Line (MOSEL) survey. Our spectroscopic success rate is ∼53% and

uncertainty is

 = [Δz/(1+z)] = 0.0135. We confirm 31 ELGs at

, and show that SELGs have spectroscopic rest-frame [O iii]5007 Å equivalent widths of 100–500 Å and tend to be lower-mass systems [

 ∼ 8.2–9.6] compared with more typical star-forming galaxies. The SELGs lie ∼0.9 dex above the star-forming main sequence at z ∼ 3.5 and have high inferred gas fractions of

 ≳ 60%, i.e., the inferred gas masses can easily fuel a starburst to double stellar masses within ∼10–100 Myr. Combined with recent results using ZFOURGE, our analysis indicates that (1) strong [O iii]5007 Å emission signals an early episode of intense stellar growth in low-mass [

] galaxies and (2) many, if not most, galaxies at z > 3 go through this starburst phase. If true, low-mass galaxies with strong [O iii]5007 Å emission (EWrest > 200 Å) may be an increasingly important source of ionizing UV radiation at z > 3.
Simulations of Prominence Eruption Preceded by Large-amplitude Longitudinal Oscillations and Draining
Authors: Fan Yuhong
Published: July 2020

We present magnetohydrodynamic (MHD) simulations of the evolution from quasi-equilibrium to eruption of a prominence-forming twisted coronal flux rope under a coronal streamer. We have compared the cases with and without the formation of prominence condensations, as well as the case where prominence condensations form but we artificially initiate the draining of the prominence. We find that the prominence weight has a significant effect on the stability of the flux rope and can significantly increase the loss-of-equilibrium height. The flux rope can be made to erupt earlier by initiating draining of the prominence mass. We have also performed a simulation where large-amplitude longitudinal oscillations of the prominence are excited during the quasi-static phase. We find that the gravity force along the magnetic field lines is the major restoring force for the oscillations, in accordance with the “pendulum model,” although the oscillation periods are higher (by about 10%–40%) than estimated from the model because of the dynamic deformation of the field line dips during the oscillations. The oscillation period is also found to be slightly smaller for the lower part of the prominence in the deeper dips compared to the upper part in the shallower dips. The oscillations are quickly damped out after about two to three periods and are followed by prominence draining and the eventual eruption of the prominence. However, we do not find a significant enhancement of the prominence draining and earlier onset of eruption with the excitation of the prominence oscillations compared to the case without.
Molecular detection of Rickettsia africae in Amblyomma ticks collected in cattle from Southern and Central Mozambique
Authors: Magaia Vlademiro , Taviani Elisa , Cangi Nidia , Neves Luis
Published: July 2020

Introduction: Rickettsia are Gram-negative and obligate intracellular bacteria, which cause typhus and spotted fever-like diseases in humans. In Africa, Rickettsia africae of the Spotted Fever Group Rickettsia (SFGR) is the etiologic agent of the African Tick-Bite Fever. The disease is transmitted by ticks of the genus Amblyomma, which serve as vectors and reservoirs of Rickettsia. In this study, we aimed to detect Rickettsia species in ticks collected from cattle in south and central Mozambique.

Methodology: DNA from 412 adult ticks and 22 pools of larvae were extracted and tested for the presence of Rickettsia genes gltA, ompA and ompB by PCR, followed by sequencing and phylogenetic analysis.

Results: Our results showed that in adult ticks, 79.5% (n = 330), 66% (n = 274) and 67% (n = 275) samples were positive for gltA, ompA and ompB genes, respectively. Among the 22 pools of larvae analysed, 77.2% (n = 17) were positive for the three genes tested. The infection rates ranged from 43% to 100% for Rickettsia by gltA in all locations studied, with maximum values of 100% observed in the districts of Maputo province namely Changalane, Boane and Matutuine district. The phylogenetic analysis of amplified sequences revealed that samples under study grouped with R. africae for the 3 genes.

Conclusion: The study showed that Spotted Fever Group Rickettsia represented by R. africae widely circulate in Amblyomma ticks collected in south and central regions of Mozambique.
Alternative antimicrobials for prophylaxis of the Group B Streptococcus maternal-fetal disease
Authors: Antonello Vicente Sperb , Dallé Jessica , Dall'Oglio Emilly , Ramos Suelyn , Bassols Felipe , Jimenez Mirela F
Published: July 2020

Introduction: GBS colonization is an important risk factor for maternal and neonatal infection morbidity and mortality. Intrapartum antibiotics may prevent vertical transmission of GBS from colonized mothers to their babies. The objective of this study was to evaluate the effectiveness of cefazolin prophylactic regimen for GBS disease, comparing it to the established penicillin-based protocols, given the opportunity provided by the temporary unavailability of first-choice antibiotics in Brazil.

Methodology: A retrospective analysis was conducted at the Hospital Femina Obstetrics Service between January and December 2015. Ninety-eight pregnant women received standard penicillin (70 patients) or ampicillin (28 patients) antibiotic prophylaxis, and 251 pregnant women received an alternative prophylaxis with cefazolin during the study period. Risk factor, Maternal and neonatal outcomes were evaluated and compared between groups.

Results: No significant difference was found in maternal (RR = 0.71; IC 95%:0.30-1.68; p = 0.709) and neonatal (RR = 0.84; IC 95%:0.61-1.15; p = 0.271) outcomes between those patients using the alternative antibiotic prophylaxis in comparison to the standard antibiotics, with the dependent variable of maternal and neonatal outcomes grouped and controlled for potential confounding variables.

Conclusions: The antibiotics used as alternatives to penicillin and ampicillin for the prevention of maternal-fetal GBS disease are poorly studied, and this study indicate that cefazolin can be an optimal choice, offering safety in the use of this antibiotic in situations where penicillins are contraindicated or unavailable.
Hepatitis C screening and referral for further investigation and treatment in a tertiary care hospital
Authors: İskender Gülşen , Mert Duygu , Çeken Sabahat , Bahçecitapar Melike , Yenigün Ayla , Ertek Mustafa
Published: July 2020

Introduction: Hepatitis C virus infection is a major cause of cirrhosis and liver cancer worldwide. The knowledge of physicians about what should they do in case of any anti-HCV positivity in screening tests is of great importance. In this study the awareness and knowledge of physicians is evaluated by analyzing the rate of the referrals of anti-HCV positive patients to HCV RNA test and their treatment by different clinics.

Methodology: The patients tested for anti-HCV in internal medicine, surgery, gastroenterology and infectious disease clinics between 1 January and 31 December 2017 were evaluated retrospectively in a tertiary care hospital.

Results: Anti-HCV testing was performed in 32,803 patients. Anti-HCV positivity was detected in 95 (0.28%) patients aged 88 years of age or younger (mean 60.89 ± 16.96 years), 57.89% of them were female. HCV RNA was tested in 50 (%52,63) of anti-HCV positive patients and it was found positive in 18 (36%) patients. In anti-HCV positive patients HCV RNA testing was requested most by infectious disease (100%) and gastroenterology (70.58%) clinics and least by surgery and other clinics (21% and 25% respectively). These differences were found to be statistically significant ( =33.65, p < 001).

Conclusions: Our study highlights the significant deficiencies existed in the referring patients with anti-HCV positivity for further examination and treatment by the attending physicians especially in surgical clinics. Performing HCV screening in the different steps of medical care and using electronic reminder systems directing physicians at appropriate diagnostic and treatment protocols can maximize the likelihood of the detection and treatment of HCV- infected patients.