bluuebunny/crossref_metadata_2025 huggingface dataset:
Use and Cost-Effectiveness of a Telehealth Service at a Centralized COVID-19 Quarantine Center in Taiwan: Cohort Study (Preprint)
Authors: Yen Yung-Feng , Tsai Yi-Fan , Su Vincent Yi-Fong , Chan Shang-Yih , Yu Wen-Ruey , Ho Hsuan , Hou Chun-Mei , Chen Chu-Chieh , Woung Lin-Chung , Huang Sheng-Jean
Published: July 2020

BACKGROUND

Telehealth is a recommended method for monitoring the progression of nonsevere infections in patients with COVID-19. However, telehealth has not been widely implemented to monitor SARS-CoV-2 infection in quarantined individuals. Moreover, studies on the cost-effectiveness of quarantine measures during the COVID-19 pandemic are scarce.

OBJECTIVE

In this cohort study, we aimed to use telehealth to monitor COVID-19 infections in 217 quarantined Taiwanese travelers and to analyze the cost-effectiveness of the quarantine program.

METHODS

Travelers were quarantined for 14 days at the Taiwan Yangmingshan quarantine center and monitored until they were discharged. The travelers’ clinical symptoms were evaluated twice daily. A multidisciplinary medical team used the telehealth system to provide timely assistance for ill travelers. The cost of the mandatory quarantine was calculated according to data from the Ministry of Health and Welfare of Taiwan.

RESULTS

All 217 quarantined travelers tested negative for SARS-CoV-2 upon admission to the quarantine center. During the quarantine, 28/217 travelers (12.9%) became ill and were evaluated via telehealth. Three travelers with fever were hospitalized after telehealth assessment, and subsequent tests for COVID-19 were negative for all three patients. The total cost incurred during the quarantine was US $193,938, which equated to US $894 per individual.

CONCLUSIONS

Telehealth is an effective instrument for monitoring COVID-19 infection in quarantined travelers and could help provide timely disease management for people who are ill. It is imperative to screen and quarantine international travelers for SARS-CoV-2 infection to reduce the nationwide spread of COVID-19.
Integrated STEM-based module: Relationship between students’ creative thinking and science achievement
Authors: Shukri Ahmad Adnan Mohd , Ahmad Che Nidzam Che , Daud Norhayati
Published: July 2020

STEM-based learning innovations have been massively developed especially related to 21st Century skills. This study was done to explore a relationship between creative thinking and science achievement through the implementation of integrated STEM-based module on Reproduction topic. A quasi-experimental study involved pretest-posttest non-equivalent group design with sample of 60 eighth graders from a boarding school in Baling, Kedah, Malaysia. The samples was divided into two groups - 30 students of treatment group and 30 students of control group. The data were collected from pre-post-Reproduction Test Questions (RTQ) scores and pre-post-Creative Thinking Test Questions (CTTQ) scores. Pearson Correlation and one-way ANOVA at a significance level p < .05 were performed in analysing data. Findings reveal no statistically significant relationship between creative thinking and science achievement for both treatment group (r = .220, p = .243) and control group (r = .308, p = .098). Besides, there is a statistically significant and moderate and positive relationship between creative thinking indicator of fluency and science achievement (r = .463, p = .010) of the treatment group. In conclusion, general finding is an evidence that between creative thinking and science achievement shows a consistency in whatever teaching strategy implemented. In which, educators need to realize that academic achievement does not necessarily be a necessity in shaping one’s creativity. Therefore, further study is needed to investigate the relationship between these variables in the execution of STEM teaching and learning so that the findings can be generalized to a larger population.
RELAÇÃO DE CAUSALIDADE ENTRE A FEBRE DA ZIKA E MICROCEFALIA NO BRASIL: REVISÃO INTEGRATIVA
Authors: Mercês André Emanuel Dantas , Cajuhi Angela de Souza , Santos Lorena Conceição Souza dos , Silva Rudval Souza da , Suto Cleuma Sueli Santos , Oliveira Jones Sidnei Barbosa de
Published: July 2020

O Zika vírus é um arbovírus transmitido pela picada dos mosquitos Aedes aegypti e Aedes albopictus infectados e apresentam como principais manifestações clínicas: febre aguda, exantema, prurido e conjuntivite. Em 2015 causou uma epidemia no Brasil, desencadeando casos de microcefalia em bebês cujas gestantes tiveram a febre da Zika. O Nordeste notificou o maior número de casos. Objetivou-se identificar, a partir de uma revisão integrativa, a relação entre a febre da Zika e a microcefalia. Trata-se de revisão integrativa, realizada a partir de buscas desenvolvidas nas bases de dados da Biblioteca Virtual em Saúde (BVS) e da Scientific Electronic Library Online (SciELO) com publicações dos anos de 2015 e 2016, idiomas português e inglês. Foram encontradas 191 publicações, as quais passaram por um processo de leitura e análise quanto ao atendimento do objetivo e aplicação dos critérios de inclusão. Restaram oito publicações que integraram o corpus desta revisão. Os resultados apontam para uma relação de causa e efeito entre o contato das gestantes com o Zika vírus e o desenvolvimento de microcefalia em seus bebês. Necessita-se de maiores evidências que demonstrem os reais fatores envolvidos nesse processo, como os genéticos, ambientais e até mesmo interferência de outras infecções.

Palavras-chave: Zika vírus. Microcefalia. Aplicações da epidemiologia.
QUALIDADE BACTERIOLÓGICA E PARASITOLÓGICA DE MÃOS E CONDIÇÕES DE SAÚDE E HIGIENE EM HORTICULTORES
Authors: Silva Juciene de Jesus Barreto da , Miranda Felipe Silva de , Oliveira Juliana Mercês de Oliveira e , Amor Ana Lúcia Moreno , Silva Isabella de Matos Mendes da
Published: July 2020

A produção é uma das principais etapas envolvidas na contaminação das hortaliças. Entre os fatores que contribuem para a contaminação está a falta de higiene e más condições de saúde dos produtores. Assim, o objetivo deste estudo foi investigar a ocorrência de bactérias e parasitos em mãos e as condições de saúde e higiene de horticultores em comunidades rurais do município de Santo Antônio de Jesus, Bahia. O período de coleta foi de agosto a outubro de 2015. Utilizou-se um questionário com dados pessoais e dados socioeconômicos e coleta de material fecal e subungueal. Realizaram-se análises parasitológicas do material fecal e subungueal e análises bacteriológicas do material subungueal. A análise estatística foi baseada no teste qui-quadrado de Pearson. O nível de significância adotado foi de 5% (p < 0,05). Foram entrevistados 21 horticultores, dos quais 62% eram do sexo masculino e 38% do sexo feminino. A faixa etária prevalente variou de 20 a maior que 50 anos (86%). Constatou-se que 17 (77%) dos horticultores estavam parasitados por helmintos ou protozoários. Em relação aos resultados bacteriológicos, apenas um horticultor (4,7%) apresentou valores de 2 log UFC/mão para coliformes totais e 18 (85,8%) para S. aureus. É de extrema importância que os horticultores tenham bons hábitos higiênicos, a fim de garantir a qualidade dos alimentos e proporcionar segurança alimentar aos consumidores. Sugere-se a implementação de programas de formação em higiene pessoal e manipulação segura para os horticultores e acompanhamento anual dos índices parasitários pelos órgãos oficiais contribuindo para o aprimoramento da educação sanitária destes profissionais.

Palavras-chave: Educação sanitária. Agricultura. Segurança alimentar.
Sains, Teknologi, Dan Nilai-Nilai Moral
Authors: AR Muhammad
Published: July 2020

This article explains about sciences, technology its relation to moral values. The existence of sciences and technology seems to be more beneficial for human beings in implementing their activities in their daily life. It is suffice to say that sciences and technology can reduce human involvement in doing something. It can help mankind from working hard. On the one other hand, some people say that sciences and technology will be dangerous for human beings, for examples, nuclear weapons, chemical weapons, tanks, scud, and other sophisticated guns or weapons which are produced by mankind exclusively for massacring and killing enemies----human beings. Therefore, sciences and technology must be controlled by those who have moral values and religious teachings. Those who are behind the sophisticated technology should be inculcated moral values into their heart and mind. Actually, Islam is not against development and modern technology but it supports and facilitates them as long as it is beneficial for human beings. We do not have to put a blame on sciences and technology for the Muslims scholars and Muslims scientists themselves had given sAl-Ghazali, Ibnu Sina, Ibnu Rusyd, Ibnu Khaldun, Al-Tabari, Al-Kindi, Al-Jabeer, Al-Khawarizmi, Ibnu Badjah, Baiquni, Al-Farabi, Al-Razi, Omar Khayam, dan Al-Masâ€™udi toward modern sciences and particularly to the West (Andalusia). They had been contributing sciences and knowledge to the people both in the East and in the West which were introduced by the kingdom of Bani Abbasiyah and Bani Umayyah. Historically, Islam had been contributing sciences and technology to the Europe for more than five centuries. Unfortunately, when non-Muslims conquered Muslims countries they gave two choices for Muslims---becoming Christians or killed! Most of them were killed and some of them escaped to North Africa and Middle East. All muslims schools and libraries were burned by the conquerors. This was the worst circumstances faced by Muslims in Andalus (Spain), Bosnia Herzegovina, Kossovo, Myanmar and Iraq.
Penentuan Tingkat Kebisingan Pada Area Pengolahan Sekam Padi, Siltstone Crusher, Cooler Dan Power Plant Pada PT Lafarge Cement Indonesia-Lhoknga Plant
Authors: Harahap Juliansyah
Published: July 2020

This research conducted in PT. Lafarge Cement Indonesia which is one of company whose field in cement production located in western Indonesia region, exact place in Aceh province. The aimed of this research are to know about noise levels in some production areas of PT. Lafarge Cement Indonesia Lhoknga plant and define anticipation actions to the effect of existing noice level based on Hierarchy of Control (HoC). Used method in this research are measuring method with sampling points where measurement conducted if the noise suspected over the threshold limit by conducting noise sampling just onto one or few locations. Sample data obtained then being processed and analized by using statistical method.

The result of this research concluded that rice husk processing area, siltstone crusher, cooler and most of power plant area which is in front of condenser 1 and 2, and near to turbin 1 and 2 have LAeq value over than 85 dB so that using hearing protection is a mandatory. Control conduct to

the over noise shelf in few areas can be conducted by implementing HoC

like elimination, substitution, engineering control (redesigning equipment,

servicing and maintaining equipment, isolating equipment, damping and cushioning noise source and installing absorbtive baffles), administrative control (work hours per day limitation and health surveillance program)

and using tools for self protection (application of hearing protection with NRR which can cover the noise shelf to workers).
Pengaruh Penggunaan Jenis Modulasi Sistem HAPS pada Layanan DVB-T
Authors: Wahyuni Sri
Published: July 2020

DVB-T (Digital Video Broadcasting- Terresrial) merupakan sebuah standar terbuka dalam transmisi video digital yang telah diakui secara internasional dikeluarkan oleh ETSI. Pada penelitian ini akan menganalisis pengaruh pemilihan jenis modulasi yang digunakan terhadap performansi layanan DVB-T pada sistem High Altitude Platforms Station (HAPS). HAPS yang dikenal sebagai stratospheric broadband adalah sebuah standar infrastruktur telekomunikasi yang serupa dengan satellite, yang ditempatkan di lapisan stratosfer. HAPS dikembangkan untuk menjalankan layanan serupa satellite dengan biaya yang lebih hemat, waktu perealisasian yang jauh lebih pendek dan memiliki cakupan yang jauh lebih besar dibandingkan dengan infrastuktur terestial saat ini. Kanal HAPS dapat menyediakan hubungan LOS antara platform HAPS dengan user sehingga dapat disimulasikan dengan kanal rician. Berdasarkan hasil penelitian, performansi layanan DVB-T pada sistem HAPS dipengaruhi oleh jenis modulasi dan mode kerja yang digunakan, penggunaan modulasi QPSK dengan mode kerja 8K memberikan performansi paling baik, dengan memenuhi nilai BER yang telah ditentukan yaitu lebih kecil dari 10-4
Conflictos en los confines de la Real Audiencia. Actuaciones de Quito y Santafé en el pleito por el abasto de carne de Guadalajara de Buga, 1768-1791
Authors: Quintero Ordóñez David
Published: July 2020

Durante casi dos siglos los cabildos de Buga y Cartago mantuvieron un complejo pleito jurisdiccional. La particularidad de este caso radica en que si bien ambas ciudades se encontraban sujetas al gobierno de Popayán, sus límites marcaban las confines de las reales audiencias de Quito y Santafé, lo cual complicaba cualquier resolución. Desde distintos argumentos, entre los que se encontraban el proceso de conquista, los usos de la tierra, la vecindad de los habitantes, se buscaba disputar ocho leguas comprendidas entre las quebradas de El Naranjo y La Honda, zona de producción ganadera clave para garantizar el abasto de carne de ambas poblaciones.
Desindigenizados pero no vencidos: raza y resistencia en la Comunidad de Paz y la Universidad Campesina en Colombia
Authors: Courtheyn Christopher
Published: July 2020

Integrando teorías sobre la raza como una estructura global y las clasificaciones raciales latinoamericanas, se ofrece una descripción de la racialización en Colombia. Este artículo analiza las dinámicas raciales de la resistencia al extractivismo por parte de la Universidad Campesina de Colombia, que une grupos indígenas y campesinos, como la Comunidad de Paz de San José de Apartadó. Mientras que el léxico de la raza dominante separa a los campesinos de los grupos indígenas y negros, sostengo que el identificador campesino mestizo oculta cómo los campesinos de San José fueron desindigenizados pero siguen siendo racializados. Si la racialización funciona para dominar y dividir al subalterno, la red de solidaridad interétnica de la Universidad Campesina revela y contrarresta el racismo.
Sembrar el futuro, recordar el pasado: plantas y reconfiguración del territorio en Bellavista, Bojayá
Authors: Henríquez Chacín Bela
Published: July 2020

El artículo presenta los resultados de investigación sobre el trabajo femenino de siembra en espacios domésticos y el papel de las plantas en el proceso de reterritorialización de una comunidad afrocolombiana, desplazada y reubicada a causa de la masacre de Bojayá en el 2002. A través de observación participante, entrevistas y relatos de vida, examino la experiencia de seis mujeres que reconstruyen una miscelánea de plantas en el nuevo asentamiento. Sus conocimientos y prácticas demuestran cómo las mujeres activan sus capacidades y revitalizan el cultivo de plantas de uso común para reconfigurar y resignificar la vida en este nuevo territorio dispuesto institucionalmente.
Propuesta de colaboración con futuros docentes de educación infantil. Bocadillos temáticos, series, performances e instalaciones
Authors: Pérez Camarero Pilar , Alegre del Rey María Ángeles
Published: July 2020

O artigo apresenta a análise pedagógica de uma experiência de formação para futuros professores de educação artística na educação infantil na Universidade Autônoma de Madrid. Aborda o percurso metodológico e os fundamentos através dos quais o projeto foi realizado. Esta proposta constitui um processo inovador com base no dinamismo e na autogestão, envolvendo os participantes, tantos os alunos como os professores. O trabalho se desenvolveu através de observação e os indicadores foram obtidos através da elaboração do diário de campo, gerando assim reflexões e atividades de sensibilização e pensamento pedagógico artístico.
HUBUNGAN BUDAYA ORGANISASI DENGAN KINERJA PEGAWAI DINAS PENDIDIKAN PEMUDA DAN OLAHRAGA KOTA SAWAHLUNTO
Authors: MAN WIDIA ANINGSIH
Published: July 2020

This research aimed to describe the employee performance, organizational culture and cultural relations organization with the performance satisfaction at Dinas Pendidikan Pemuda dan Olahraga Kota Sawahlunto. The hypothesis of the proposed research is “organizational culture is  significantly correlated with the performance of employee at Dinas Pendidikan Pemuda dan Olahraga Kota Sawahlunto”. The present research is correlational which to see organizational culture with employee performance at Dinas Pendidikan Pemuda dan Olahraga Kota Sawahlunto. The population is 69 people and samples is 61 people. Large instrument used for data collection was a questionnaire type a Likert scale that have been valid and reliabel. The techhique of data analysis is done by using the formula Product Moment Correlation and T-test. The result of the dataanalysis showed that (1) employee performance at Dinas Pendidikan Pemuda dan Olahraga Kota Sawahlunto is in the category is good (85,15%), (2) organizational culture are on the category good (89,54%), and (3) there is a significant organizational culture between leadership with employee performance with a correlation coefficient = 0,327. So it can be concluded tha organizational culture affects employee performance at Dinas Pendidikan Pemuda dan Olahraga Kota Sawahlunto.
KEPEMIMPINAN WALI NAGARI SE-KECAMATAN KOTO PARIK GADANG DIATEH KABUPATEN SOLOK SELATAN
Authors: ELFAMEDRA YOFI
Published: July 2020

This article describe result of research about leadership Guardian Village in the Koto Parik Gadang Diateh Districts in Solok Southern District. The population of this research are 69 employee and 59 employee were taken as a sample. Sampling technics were using is Simple Random Sampling with Krejchi Table. The instrument used in this research is questionnaire and analyzed by average. In general, the result of this research is leadership Guardian Village in the Koto Parik Gadang Diateh Districts in Solok Southern District have is good enough at 3,45.
PENGGUNAAN MODEL VALUE CLARIFICATION TECHNIQUE (VCT) PERCONTOHAN UNTUK MENINGKATKAN PROSES PEMBELAJARAN TEMATIK TERPADU DI KELAS IV SEKOLAH DASAR
Authors: Audina Witia , Reinita Reinita
Published: July 2020

This research was conducted based on the facts indicating that the integrated thematic     learning was not run as it was expected. The teacher seemed to ignore the involvement of the students in  applying each of the values obtained in a learning stimulus in the form of a theacher’s demonstration. The purpose of   this research  was  to  describe the application  of VCT Percontohan approach  in integrated thematic learning process. This research is a class action. This research was conducted at SD Negeri 15 Ulu Gadut Kota Padang. The subject of the research was the teacher and the students of class IV totaling 25 people . The result of the research revealed that the quality of integrated thematic learning increased. The first cycle of meetings one aspect of teacher 84,4 % (B) and 84,4 %(B) of student aspects, second meeting aspect teacher 90,62 % (SB) of the students aspect of90,62% (D). The second cycle of meetings one aspect of teacher 93,75% (SB) of the student aspect 93,75% (SB).
PENINGKATAN AKTIVITAS BELAJAR SISWA PADA PEMBELAJARAN TEMATIK MENGGUNAKAN PENDEKATAN VCT MODEL MATRIKS DI SDN 36 CENGKEH KOTA PADANG
Authors: Efendi Satria , Reinita Reinita
Published: July 2020

In order to enhance the students' learning activities on thematic learning at SDN 36 Cengkeh, Padang. Classroom action research conducted. Objectives to be achieved by the researchers is to increase the activity of teachers and students during the learning takes place by using the Matrix Model VCT approach. This study consisted of two cycles with data analysis techniques qualitative and quantitative descriptive implemented through three stages: planning, action and observation, reflection. The data collection was assisted by VB classroom teachers using teacher and student activity sheets. The results showed that the activity of teachers increased by 6% from 78% in the first cycle to 84% in the second cycle. While the student activity increased by 9% from 75% in the first cycle to 84% in the second cycle.
PENGELOLAAN SARANA PENDIDIKAN DI SEKOLAH MENENGAH KEJURUAN NEGERI DI KOTA PADANG
Authors: Caniago M.Hafyzh , Anisah Anisah , Ermita Ermita
Published: July 2020

The purpose of writing articles to obtain information about Management of Education Facilities at Vocational High School in the City of Padang. The population in this study is the manager of educational facilities at State Vocational High School In Padang City amounting to 40 people. The data collection technique is done by spreading the questionnaire to all populasidenga using the mean formula. The results showed that the management of educational facilities at Vocational High School in the City of Padang, with details of the research results as follows, the planning of education facilities has been done well (76%), procurement of educational facilities have been done well (77.7%), (74.1%), the utilization of educational facilities has been well implemented (80.6%), maintenance of educational facilities have been done well (74.6%) and the elimination of pedidika facilities has been done quite well ( 64.2%). From the description of research results can be concluded that the overall management of educational facilities at Vocational High School in Padang City has been done well (74.53%), but must be improved again so that the educational facilities in schools are in good condition and ready to use and can support in the learning process effectively and efficiently.
Öğretmenlerin Mesleki İnançları ile Öğrencilerin Problem Çözmeye Yönelik Tutumları Arasındaki İlişki: İsteklilik, Sebat ve Güven
Authors: KILIÇOĞLU Elif , ERBAY Oktay
Published: July 2020

Bu çalışmada öğretmenlerin mesleki inançları ile öğrencilerin problem çözmeye yönelik tutumları arasında ilişkinin olup olmadığı incelenmiştir. Burada ifade edilen problem çözmeye yönelik tutum kavramı isteklilik, sebat ve güven kategorileri ile temsil edilmektedir. Araştırma bir devlet ilkokulunun 4. sınıfında öğretime devam eden 12 tane sınıf öğretmeni ve öğrenime devam eden 395 öğrenci ile gerçekleştirilmiştir. Nicel araştırma türlerinden ilişkisel tarama modeline göre yapılan bu çalışmada veriler iki tür ölçek ile elde edilmiştir: öğretmenlere uygulanan mesleki inanç ölçeği ve öğrencilere uygulanan problem çözme tutum envanteri. Veri analizinde betimsel ve çıkarımsal istatistik kullanılmıştır. Analiz sonuçları öğretmenlerin mesleki inançlarının duyuşsal ve davranışsal boyutta yoğunlaştığını göstermektedir. Ayrıca öğretmenlerin mesleki inançları ile öğrencilerin problem çözmeye yönelik tutumları arasında iki değişkenin de alt boyutları çerçevesinde ilişki bulunmuştur.
Sposoby radzenia sobie ze zmianami demograficznymi w polskich organizacjach
Authors: Ratajczak Joanna
Published: July 2020

Motywacja: Zachodzące obecnie zmiany demograficzne, m.in. zjawisko starzenia się społeczeństwa czy spadek liczby ludności, niewątpliwie stanowią wyzwanie dla współczesnych organizacji. Niezbędne jest wykorzystanie wszystkich dostępnych zasobów ludzkich. Koniecznością staje się zatem zmiana polityki personalnej wielu przedsiębiorstw.
Cel: Celem artykułu jest rozpoznanie sposobów radzenia sobie pracodawców ze zmianami demograficznymi zachodzącymi na rynku pracy.
Materiały i metody: Wykorzystano następujące metody badawcze: studium przypadku, sondaż diagnostyczny (ankieta i wywiad), analiza dokumentów. Dane pozyskano z kilkunastu polskich organizacji.
Wyniki: Zaprezentowano praktyki z zakresu polityki personalnej w obszarze rekrutacji, motywowania, rozwoju i oceny pracowników stosowane w analizowanych przedsiębiorstwach, których celem jest jak najlepsze zarządzanie pracownikami zróżnicowanymi wiekowo. W konsekwencji może być to odpowiedzią na zmiany demograficzne występujące na rynku pracy, m.in. niedobór pracowników i różnice międzypokoleniowe. Niewątpliwie dobrym rozwiązaniem istniejącej na rynku pracy sytuacji może być tzw. zarządzanie wiekiem, czyli wprowadzenie odpowiednich metod zarządzania zróżnicowanym wiekowo zespołem, który odpowiada wszystkim pracownikom, niezależnie od tego, do której grupy pokoleniowej należą. Zgodnie z uzyskanymi wynikami, w niewielu przedsiębiorstwach wykorzystuje się tego typu praktyki. Często jest to rezultatem typu kultury organizacyjnej lub generalnie braku istnienia w organizacji zaawansowanych systemów personalnych. Mimo, że pracodawcy dostrzegają szereg problemów związanych z pracą zespołów wielopokoleniowych, rzadko stosują rozwiązania systemowe, które mogłyby ułatwić współpracę międzypokoleniową w przedsiębiorstwie oraz odpowiedzieć na potrzeby różnych generacji pracowników.
OPTIMIZATION OF QUEUING SYSTEMS UNDER SIGNIFICANT LOADS
Authors: Afonin Viktor , Nikulin Vladimir
Published: July 2020

The article deals with analytical models of Markov Queuing systems with service failures, incoming requests and requirements. The systems are analyzed in the conflict situations, for example, under significant loads, when the input flow intensity is high relative to the service intensity, which is important for extreme situations, both in technical applications, Internet applications, and social ones. There occurs a problem of optimization – minimization of the number of channels, provided the Queuing system has a guaranteed throughput. There is considered the approach to solving the optimization problem, when the relative system throughput is maximized while minimizing the number of service channels. Given the fact that the analytical formulas of Markov Queuing systems contain factorials, the analytical analysis of systems encounters the computational limitations. In the conducted research, in order to resolve computational difficulties it was decided to apply the approximation of the probabilities of the system states using the Laplace probability integral. Its use is justified precisely at high system load rates and a large number of service channels. There are described the features of applying the Laplace integral in conjunction with the numerical optimization for a conditional extremum. There is given the method of determining the number of service channels, when the probability of denial of service is minimized, respectively, maximizing the relative throughput of the system. There is given a graphical interpretation of the proposed method for optimizing Queuing systems with failures at the significant load. It is shown that during the search for the optimum there is a transition process in which there take place the significant changes

in the system parameters: the intensity of the input flow and the intensity of service.
MATHEMATICAL MODEL OF ELECTRIC POWER CONSUMPTIONIN ORGANIZATIONAL-TECHNICAL SYSTEM
Authors: Ustyugov Nikita , Protalinskiy Oleg Miroslavovich
Published: July 2020

The article presents the purpose of the study as building a mathematical model for forecasting the consumption of electric energy and power for six price categories in the power supply system of the enterprise and developing an algorithm that allows the consumer to choose the best cost of electricity. Consideration of the system as an integral complex of interacting objects was carried out from the standpoint of cause-effect relationships and mutual influence. For the analysis of scientific data, the principles of consistency, structuring, integrity, hierarchy and multiplicity were applied. The structural-functional approach allowed to study the elements (subsystems) and the dependencies between them within a single system. The study of the current state was carried out; a forecast was made of the electric consumption of the enterprise using the initial data; a mathematical model of electric energy and power was developed for six price categories; an algorithm for determining the price category was developed, which allows finding a financially profitable price category. The study can be used as the basis for consumers in the Russian Federation to choose a financially favorable price category and cost of electric energy. There has been performed an independent experimental verification of the algorithm for determining the price category, the item of expenses “payment of consumed electric energy” for the facility has been reduced. The experiment shows the practical applicability of the mathematical forecast model and the economic efficiency of the algorithm for determining the price category of electric energy.
Gümüşhane Ekolojik Koşullarında Bazı Altı Sıralı Arpa Çeşitlerinin Tane Kalite Özellikleri ve Besin Değerlerinin Belirlenmesi
Authors: SİRAT Abdulveli , BAHAR Bilge
Published: July 2020

Bu araştırma, 2012-2013 ve 2013-2014 yetiştirme dönemlerinde 11 farklı altı sıralı arpa çeşidinin (Erginel-90, Meriç, Kıral-97, Çetin-2000, Avcı-2002, Martı, Vamıkhoca-98, Akhisar-98, Lord, Epona ve Olgun) bazı tane kalite özelliklerini (nem oranı, kül oranı, protein oranı, yağ oranı, nişasta içeriği, asit deterjanda çözünmeyen lif (ADF), nötr deterjanda çözünmeyen lif (NDF) ve çeşitli mineral madde içeriklerini (K, Mg, P)) belirlemek için Gümüşhane koşullarında, Tesadüf Blokları Deneme Desenine göre üç tekrarlamalı olarak yürütülmüştür. İki yılın ortalamasına göre çeşitlerin nem oranı %9.21-9.88, kül oranı %2.00-2.31, protein oranı %12.73-15.65, yağ oranı %1.36-2.01, nişasta içeriği %52.61-58.60, ADF ve NDF değerleri sırasıyla %5.52-8.65 ile %20.42-25.03 arasında değişmiştir. En yüksek nişasta oranı Olgun çeşidinden (%58.60) elde edilmiştir. En yüksek protein oranına (%15.65) ise Akhisar-98 çeşidi sahip olmuştur.
Buğday ve Çeltikte Okratoksin A’nın Kantitatif Olarak Tespiti ve Validasyon Çalışması
Authors: HEPSAĞ Fatma
Published: July 2020

Bu çalışmada, buğday ve çeltik Okratoksin A (OTA) varlığı yönünden değerlendirilmiştir. Buğday örnekleri Mersin, çeltik örnekleri ise Edirne ve Çanakkale illerindeki çiftçilerden temin edilmiştir. OTA yüksek performanslı sıvı kromatografisi (HPLC) yöntemi ile tespit edilmiştir. Buğdayörneklerinin 3'ünde (%15) OTA tespit edilmiştir. Konsantrasyon, <ölçüm limiti (LOQ)-6.93µg kg-1 arasında değişmekte olup, pozitif numunelerin iki tanesi, doğrudan insan tüketimine zararlı olacağı tahmin edilen OTA için 5 µg kg-1 maksimum limiti geçmiştir. Çeltik örneklerinin 2’sinde (%10) OTA tespit edilmiştir. Konsantrasyon, <ölçüm limiti (LOQ)-6.93µg kg-1 arasında değişmekte olup, pozitif numunelerin iki tanesi, doğrudan insan tüketimine zararlı olacağı tahmin edilen OTA için 5 µg kg-1 maksimum limiti geçmiştir. Çeltik örneklerinin 2’sinde (%10) OTA tespit edilmiştir. Konsantrasyon, <LOQ-5.44µg kg-1 arasında değişmekte olup, pozitif numunelerin bir tanesi, doğrudan insan tüketimine zararlı olacağı tahmin edilen OTA için 5 µg kg-1 maksimum limiti aşmıştır. Genel olarak elde edilen sonuçlar, Türk Gıda Kodeksi (TGK) ve Avrupa Birliği (AB) Maksimum Kalıntı Limitleri (MRL)’nin altında değerlerdir.
Kapsül Yanıklığı Hastalık Etmeni (Brachycladium papaveris (Sawada) Shoemaker & Inderb.)’nin Bazı Haşhaş Çeşitlerinin Çimlenme Performansına Etkisi
Authors: GÜLCAN Canan , DİNLER Havva
Published: July 2020

Son yıllarda haşhaşta tohum kaynaklı patojenler nedeniyle ürün ve verim kayıpları yaşanmaktadır. Bu patojenler hastalığın bulaşmasında önemli rol oynamakta, tohum canlılığını olumsuz etkilemekte, tohum çimlenme oranını düşürmekte ve doğrudan bitki canlılığını etkileyerek verimde ciddi kayıplara neden olmaktadırlar. Bir tohum patojeni olan Brachycladium papaveris kapsül çürüklüğü, kapsül yanıklığı, haşhaş yanıklığı, yaprak yanıklığı simptomlarına neden olmaktadır ve hem morfin hem de kaliteli tohum veriminde önemli kayıplar oluşturmaktadır. Bu amaçla Uşak İli Merkez ve Sivaslı ilçelerinden hastalıklı haşhaş bitkilerinden izole edilen Brachycladium papaveris izolatlarının in vitro koşullarda Ofis 8, Ofis 1, Ofis 3, Ofis 95, Ofis NM, Ofis NP, Ofis 96, Ofis 2, Ofis 4, TMO-T, TMO-1, TMO-3, TMO-2 ve Afyon 95 olmak üzere 14 farklı haşhaş çeşidinde tohumların çimlenme performansına etkisi araştırılmıştır. Çalışmada hastalıklı bitkilerden alınan izolatların kullanılan çeşitlerde farklı etkiler gösterdiği belirlenmiştir. İzolatlar içinde en tahripkar izolat haşhaş kapsülünden elde edilen izolat olmuştur. 2, 4 ve 6. gün sayımlarında patojenin gövde, tohum ve kapsül izolatlarından en az etkilenen ve ortalama çimlenme oranı değerleri en yüksek olan çeşitler Ofis NM, Ofis 1, TMO 1 ve TMO 3 olarak belirlenmiştir. Sonuç olarak, patojenin haşhaş fideleri üzerindeki etkilerinin belirlenmesi, haşhaşın üretimi yapılan çeşitlerde hastalığa karşı çeşit reaksiyonu çalışmalarının tarla denemeleri ile ortaya konulması gerekmektedir.
Türkiye’nin Yaban Hayatı Odaklı Turizm Potansiyeli
Authors: SARI Alptuğ , ARPACIK Ahmet
Published: July 2020

Yaban hayatı odaklı turizm faaliyetleri, gelişmiş ülkelerde yaban hayatı yönetimine önemli bir ekonomik katkı sağlamaktadır. Elde edilen gelirlerin önemli bir kısmı koruma çalışmalarına aktarılmaktadır. Bu çalışmada Türkiye'nin 2000-2018 yılları arasında av turizmi istatistikleri, korunan alan ziyaretçi sayıları ve Doğu Karadeniz Bölümü'nde yer alan bazı korunan alanları 2016-2018 yılları arasında ziyaret eden yerli ve yabancı turistlerle yapılan görüşmeler değerlendirilmiştir. Turistlerin en çok şikayet ettikleri konular olarak kaarşımıza; alan hakkında bilgi alabilecekleri resmi veya gönüllü rehber eksikliği, alternatif ekoturizm faaliyetlerinin eksikliği ve olumsuz çevre koşulları çıkmıştır. Sadece av turizminden elde edilen gelirler bakımından ülkemizi bu alanda gelişmiş ülkelerle kıyasladığımızda, Amerika Birleşik Devletleri (ABD) av turizminden bizim yaklaşık 6500 katımız ve Almanya ise yaklaşık 2500 katımız yıllık gelir elde etmektedirler. Dünyada gelişmiş ülkelerin ekonomilerine önemli miktarlarda katkıda bulunan ve turistlerin ilgisinin her geçen gün arttığı ekoturizm veya yaban hayatı odaklı turizm faaliyetlerinden elde edilen gelirler Türkiye’de istenilen seviyenin ve ülkemizin potansiyelinin oldukça gerisindedir. Bugün yaban hayatı odaklı turizmden elde ettiğimiz gelirlerin yok denecek durumda olmasının en önemli nedeni, ülkemizdeki üniversite seviyesinde yaban hayatı eğitimine gereken önemin verilmeyişi ve yaban hayatı üzerine eğitim almış nitelikli personel eksikliğidir. Bu nedenle, tüm paydaşlar doğal kaynakların yönetiminde rollerini ve sorumluluklarını tam olarak yerine getirmeli ve hem yaban hayatı ile ilgili üniversite seviyesinde eğitimi hem de ilgili kurumlarda nitelikli personel görevlendirilmesini mümkün olduğu kadar teşvik etmelidir. İşte o zaman, Türkiye'de yaban hayatı yönetimi ve korunması konusunda gerekli çalışmalar yapılarak, yaban hayatı odaklı turizm gelirleri istenen seviyeye yükseltilebilir, kırsal kalkınma ve koruma çalışmalarına önemli oranda ekonomik katkılar sağlanabilir.
Alanya ve Gazipaşa’da Üretilen Avokadolarda Pestisit Kalıntı Varlığının Araştırılması ve Quechers Analiz Metodunun Verifikasyonu
Authors: GÖLGE Özgür
Published: July 2020

Bu araştırmada; 2018-2019 yıllarında Ülkemiz avokado yetiştiriciliğinin ve ihracatının yaklaşık %70 ‘nin gerçekleştirildiği Antalya’nın Gazipaşa ve Alanya ilçelerinde üreticilerden tedarik edilen 220 adet avokado örneğinde 490 etken maddenin varlığı/miktarı LC-MS/MS ve GC-MS/MS cihazlarıyla tespit edilmiştir. Araştırmada ayrıca metot verifikasyonu çalışmaları gerçekleştirilerek, her bir etken madde için ölçüm belirsizliği hesaplamaları yapılmıştır. Örneklerin hiçbirinde pestisit kalıntısı tespit edilemezken, verifikasyon ve ölçüm belirsizliği değerleri SANTE dokümanına uygun aralıklar içerisinde bulunmuştur. Sörvey analiz sonuçları ne kadar olumlu olsa da, avokado bahçelerinde kök çürüklüğü hastalığına neden olan Phytophthora cinnamoni Rands küfü, Akdeniz meyve sineği, thrips, kabuklu bitler, unlu bitler ve limon sıçanı gibi yaygın olarak görülen zararlılarla mücadelenin bitki koruma uzmanı ziraat mühendisleri rehberliğinde düzenli olarak sürdürülmesi önerilmektedir.
‘Sungold’ Kivi Çeşidinin Kalite Özellikleri Üzerine Modifiye Atmosfer Paketlemenin Etkisi
Authors: SAKALDAŞ Mustafa , GÜNDOĞDU Mehmet Ali
Published: July 2020

Bu çalışma; soğukta muhafaza süresince ‘Sungold’ (Actinidia chinensis) kivi çeşidinin ağırlık kaybı, meyve eti sertliği, suda çözünür kuru madde miktarı (SÇKM), titre edilebilir asitlik içeriği, meyve et rengi değişimi, toplam fenolik maddeler, etilen üretim miktarı ile fizyolojik ve patolojik bozukluklar gibi kalite özellikleri üzerine modifiye atmosfer paketleme (MAP) uygulamasının etkisini belirlemek için yürütülmüştür. Bu amaçla meyveler; 1.0 °C ± 0.5 °C sıcaklık ve %90-95 oransal nem koşullarında 150 gün süreyle muhafaza edilmişlerdir. Soğukta muhafazanın tüm ölçüm dönemlerinde MAP içerisinde muhafaza edilen meyvelerin ağırlık kaybının, kontrol meyvelerine kıyasla önemli derecede daha düşük olduğu belirlenmiştir. Aynı zamanda meyve eti sertliğinin korunması, suda çözünür kuru madde miktarındaki artışın yavaşlaması, titre edilebilir asitlik miktarındaki düşüşün sınırlanması, etilen üretiminin baskılanması ve iç çökmesi oranının düşüklüğü kapsamında MAP uygulaması özellikle 60 gün depolamadan itibaren, kontrol meyvelerine kıyasla daha olumlu sonuçlar vermiştir. Sonuç olarak ‘Sungold’ kivi çeşidinde herhangi bir uygulama yapılmadan 60 gün süreyle muhafaza edilebilmenin mümkün olduğu, bununla birlikte MAP uygulamasıyla bu çeşidin, 150 gün süreyle kalitenin korunarak muhafaza edilebildiği saptanmıştır.
Mechanical properties (Tensile, Hardness and Shock resistance) for the phenol formaldehyde resin with Epoxy resin
Authors: A. Rajab Mustafa
Published: July 2020

Phenolic formaldehyde (resole) resin was used at a different weight (10%, 20%, 30%, 40%), with epoxy resins at varying percentages (90%, 80%, 70%, 60%) at 20 C °. In order to study the mechanical properties (which including: Tensile strength, hardness and shock resistance), for the purpose of analysis and comparison with the mechanical properties of alloys, and the selected part for the purpose of replacing the alloy with the composite materials to reduce weight and improve mechanical properties. The results indicate improved properties with increased epoxy resins due to increased bonding between components.
هەمەجۆرى یا هێمایێن ئایینى د هۆزانێن (عارف حیتۆ) یدا
Authors: Agreen Abdullah , Hito Arshad
Published: July 2020

ئەڤ ڤەکولینە ل سەر (هەمەجۆرى یا هێمایێن ئایینى دهۆزانێن (عارف حیتۆ)یدا، ناڤهاتى ئێک ژهۆزانڤانێن نویخوازێن کوردە، دەمێ ئەم راماندنێ دهۆزانێن هۆزانڤانیدا دکەین، دزانین کو ژهەر داهێنانەکا دیتر پتر گرنگی ب هەمەرەنگییا هێمایان دایە وب تایبەتى یێن ئایینى، چونکە هێما ب جۆر وهەمەرەنگییا دەلالەتێن خۆڤە، ئێک ژ وان هەرە گرنگترین ساخلەتین ئاڤاکرنا دەقێ شیعرییە ل دەڤ هۆزانڤانى. هەروەسا هۆزانڤان شیایە وان هێمایان ژ رەهەندێن وان یێن رەوشنبیرى ڤەگوهێزیتە رەوشەنبیریەکا نویتر، کو دەربرینێ ژ کەتوارێ هەیى بکەتن، ئەوژى ب دروستکرنا هەڤبەندییەکێ دناڤبەرا کەڤن ونویدا، کو ئارمانجا هۆزانڤانى بەرپاکرنا گوهورینەکێیە ل سەر کەتوارێ تێدا دژیت. ژلایەکێ دیڤە هۆزانڤانى پشتبەستن ب هێمایێن ئایینى وەکو ئالاڤەک بۆ دەربرین ودیتنێن خوە یێن شیعرى بکارئینایە. ئارمانجا ئەڤێ ڤەکولینێ ئاشکەراکرنا وان هێمایێن هەمەرەنگە یێن کو هۆزانڤانى نویخواز ژ (تەوراتێ، ئنجیلێ، قورئانێ) وەرگرتین، چ ب رێکا هەڤدەقیێ یان وەرگرتنا هزرا سەرەکییا دەقى ب خوە. ئەڤێ چەندێ ژى ژگەلەک ژێدەرا وەردگریت، وەکى پەرتوکێن ئایینى وچیرۆکێن پێغەمبەران، رویدان وکەسایەتیێن ئایینى، کو هۆزانڤان ئەوان بۆ هێمایێن هەمەجۆر ڤەدگوهێزیت داکو بکەڤیتە دخزمەتا سەربۆر وهزرا هۆزانڤانیدا.
Primary Students’ School Anxiety: An Initiative Study on Virtual Reality Therapy
Authors: Oanh Doan Vi
Published: July 2020

School anxiety is an aspect of anxiety that can cause serious consequences on student’s academic results. Anxiety is usually caused by excessive stress about school related experiences. Consequently, over thinking and extreme worrying can lead to skipping classes, or even dropping out of school. Despite the emergence of school anxiety in recent years among junior students, little research on specific situations causing anxiety at school has been carried out. More importantly, very few attempts using virtual reality have been made to prepare students for a new school environment and help students with school anxiety. This study discovered 12 school experiences with high anxiety levels through questionnaires given to 229 fifth year students aged 10-11 and developed several situations into a virtual environment that can be used as a treatment program for students. 20 students with very high anxiety were chosen to experience the virtual reality (VR) treatment program. The findings show that student’s anxiety levels for the situations they have experienced in the treatment program have decreased dramatically. Students become more proactive when they handle the challenges in the program and they can even propose solutions for their problems.
Midwife-woman interaction as a critical component of antenatal care: ethical implications and lessons to be learned
Authors: Mathibe-Neke Johanna Mmabojalwa
Published: July 2020

Pregnancy and childbirth are important rites of passage for women and their families, with deep personal and cultural significance, bringing joy along with great physical and emotional vulnerability. The purpose of the study under review was to explore pregnant women’s experiences of midwife-woman interaction and the extent to which it conforms to respectful ethical care. A qualitative case study design was applied. The setting was randomly selected primary health care facilities that form a first point of contact for pregnant women for antenatal care in Gauteng, South Africa. The population of the study was pregnant women of low socio-economic class receiving free antenatal care service at public primary health care facilities. Women waiting for their routine antenatal care were conveniently selected to be part of the focus group discussions (FGDs). The data was analysed thematically. Whilst a few positive aspects regarding midwife-woman interaction were shared, the participants expressed a desire for personal care; a shorter waiting time; continuity of care; enhanced communication with midwives; a greater opportunity for asking questions and receiving comprehensive answers; and a greater attention to their needs and fears. Recommendations were provided based on the study findings to enhance respectful practice by midwives.
Single-Step Synthesis and Interface Tuning of Core–shell Metal–organic Framework Nanoparticles
Authors: Orr Kieran , Collins Sean M. , Reynolds Emily , Nightingale Frank , Boström Hanna , Cassidy Simon J. , Dawson Daniel M. , Ashbrook Sharon , Magdysyuk Oxana , Midgley Paul A. , Goodwin Andrew , Yeung Hamish
Published: July 2020

Control over the spatial distribution of components in metal–organic frameworks has potential to unlock improved performance and new behaviour in separations, sensing and catalysis. We report an unprecedented single-step synthesis of multi-component metal–organic framework (MOF) nanoparticles, which form with a core–shell structure whose internal interface can be systematically tuned. We use scanning transmission electron microscopy, X-ray energy dispersive spectroscopy and a new composition gradient model to fit high-resolution X-ray diffraction data to show how core–shell composition and interface characteristics are intricately controlled by synthesis temperature and reaction composition. Particle formation is investigated by in situ X-ray diffraction, which reveals that the spatial distribution of components evolves with time and is determined by the interplay of phase stability, crystallisation kinetics and diffusion. This work opens up new possibilities for the control and characterisation of functionality, component distribution and interfaces in MOF-based materials.
Copper(II) Inhibition of the SARS-CoV-2 Main Protease
Authors: Garza-Lopez Roberto A. , Kozak John J. , Gray Harry B.
Published: July 2020

In an analysis of the structural stability of the coronavirus main protease (Mpro), we identified regions of the protein that could be disabled by cobalt(III)-cation binding to histidines and cysteines [1]. Here we have extended our work to include copper(II) chelates, which we have docked to HIS 41 and CYS 145 in the Mpro active-site region. We have found stable docked structures where Cu(II) could readily bond to the CYS 145 thiolate, which would be lethal to the enzyme. We also started studying the Spike Protein, PDB ID: 6VXX and the region around the D614G mutant.
Light Induces Opening of Vascular Barrier for Precise Nanoparticle Delivery
Authors: Qi Weizhi , Li Tingting , Zhang Chen , Liu Fei , Wang Jun , Chen Dandan , Fang Xiaofeng , Wu Changfeng , LI Kai , Xi Lei
Published: July 2020

The endothelial barrier plays an essential role in health and disease by protecting organs from toxins while allowing nutrients to access the circulation. However, it is the major obstacle that limits the delivery of therapeutic drugs to the diseased tissue. Here, for the first time we show that near-infrared (NIR) laser pulses can transiently open the vascular barrier via photoacoustic force, enabling selective and substantial accumulation of nanoparticles inside specific tissues. The nanoparticle delivery in tumors by 10-minute laser scanning is ~6 times higher than that of the enhanced permeability and retention (EPR) effect in 24 hours under current experimental conditions. We further show substantial accumulation of nanoparticles in the mouse brain with intact skull through light-controlled opening of the blood-brain barrier (BBB). This approach opens a new door for tissue-specific delivery of nanomaterials with an unprecedented level of efficiency and precision.
Silicon Photomultipliers as a Low-Cost Fluorescence Detector for Capillary Electrophoresis
Authors: Petersen Brae , Gallion Luke , Allbritton Nancy
Published: July 2020

Capillary electrophoresis (CE) is a highly efficient separation method capable of handling small sample volumes (~pL) and low (~yoctomole) detection limits, and as such is ideal for applications that require high sensitivity such as single-cell analysis. Low-cost CE instrumentation is quickly expanding but low-cost, open-source fluorescence detectors with ultra-sensitive detection limits are lacking. Silicon photomultipliers (SiPM) are inexpensive, low-footprint detectors with the potential to fill the role as a detector when cost, size, and customization are important. In this work we demonstrate the use of a SiPM in CE with zeptomolar detection limits and a dynamic range spanning five orders of magnitude, comparable to photomultiplier detectors. We characterize the performance of the SiPM as a highly sensitive detector by measuring enzyme activity in single cells. This simple, small footprint, and low-cost (<$130) light detection circuit will be beneficial for open-source, portable, and budget friendly instrumentation requiring high sensitivity.