bluuebunny/crossref_metadata_2025 huggingface dataset:
ASSÉDIO SEXUAL EM UMA ESCOLA PÚBLICA DO MUNICÍPIO DE ABAETETUBA/PA
Authors: Rodrigues Barbosa Mauriceia
Published: May 2021

O presente trabalho tematiza relações de gênero e educação, tendo como objeto de estudo o assédio sexual. O objetivo é analisar casos de assédio sexual contra jovens alunas do ensino médio de uma escola pública do município de Abaetetuba/Pa, considerando relações de poder, hierarquia e desigualdades entre os gêneros. Vou utilizar como aporte teórico autores como BUTLER (2008), FOUCAULT (1988) LOURO (2003). Farei pesquisa utilizando a etnografia pós-moderna a partir de James Clifford (1998), a fim de perceber a atmosfera dos lócus, por meio da observação participante cotidiana, que consista em olhar, ouvir e perguntar, em uma inter-relação do pesquisador com os interlocutores/as; farei os registros da experiência buscando sempre perceber os significados culturais, mobilizando uma variedade de interações da vida escolar para, em seguida, traduzí-los. A pesquisa está em andamento e, em razão da pandemia, sofrerá algumas mudanças relativas a rota metodológica.
MERGULHO NAS POÉTICAS DAS INFÂNCIAS
Authors: Alvarenga Almeida Breno , Pinto Gonçalves dos Reis Fábio
Published: May 2021

Investigar se as experiências estéticas permitem a problematização de questões relacionadas à produção das identidades e das diferenças no contexto da Educação Infantil exigiu um mergulho em referenciais pós-estruturalistas, nas pedagogias e sociologia das infâncias para problematizar os dizeres de crianças a partir do seu contato com as artes. Realizar pesquisas envolvendo essa faixa etária, é fazê-las com as crianças e não sobre elas, razão pela qual inúmeros desafios são colocados nas interações do/a pesquisador/a com o campo. Emergiram desse processo questionamentos fundamentais para o desenvolvimento da pesquisa: como deixar de ser um corpo estranho naquele espaço? Como proporcionar espaços-tempos em que as crianças tenham vez e voz? Como fazer esse exercício de escuta? Assim, conclui-se que urge a necessidade de um olhar político no campo das metodologias de pesquisas com crianças, visto a urgência de conhecer as culturas das infâncias a partir das suas múltiplas linguagens.

PALAVRAS-CHAVE: Infância. Pesquisa. Crianças.
Encrucijadas melodramáticas para una intervención feminista enGéminisde Albertina Carri
Authors: Clark Maria Birgitta
Published: May 2021

Este trabajo sobre el filme Géminis (2005) de Albertina Carri se enfoca en su estructura melodramática y las estrategias cinematográficas para criticar a la sociedad de consumo y a la oligarquía argentina a principios del siglo XXI. El tema del incesto en Géminis subvierte las normas ideológicas del melodrama convencional y problematiza la expresión de la identidad sexual en el asfixiante espacio familiar. El rol de la madre en la narrativa melodramática ofrece asociaciones intertextuales con otras madres del cine nacional y el nuevo cine argentino y establece una conexión con el tema de la memoria colectiva de la posdictadura.
ANALISA KEAMANAN DAN HUKUM UNTUK PELINDUNGAN DATA PRIVASI
Authors: Al Jum’ah Muhammad Na’im
Published: May 2021

Teknologi informasi telah merubah pola hidup masyarakat secara global dan menyebabkan perubahan sosial budaya, ekonomi, dan kerangka hukum yang berlangsung dengan signifikan. Meskipun penetrasi internet di masyarakat masih sangat kurang bila dibandingkan dengan jumlah total penduduk Indonesia, kini sistem informasi dan komunikasi elektronik telah diimplementasikan pada hampir semua sektor kehidupan dalam masyarakat. Penyalagunaan data juga menjadi perhatian khusus. Banyak pelanggaran data yang terjadi karena implementasi yang buruk atau tidak adanya kontrol keamanan baik di perusahaan swasta maupun di organisasi pemerintahan. Paper ini akan membahas tentang bagaimana pengawasan data privasi  dan peraturan hukum mengenai perlindungan data pribadi. Dari hasil analisa tehadap pengawasan data pribadi bahwa ada dua pihak yang mampu dan punya peluang melakukan pengawasan massal, yaitu pihak swasta dan pemerintah. Pihak swasta bisa berasal dari penyedia layanan dan konten online, penyedia layanan internet atau pemilik infrastruktur internet sedangkan tugas negara adalah melindungi serta menjamin hak warganya. Namun pihak pemerintah sering menggunakan keamanan sebagai dalih untuk mendasari tindakan-tindakan yang melanggar hak atas privasi.  Indonesia telah memiliki beberapa undang-undang yang mengatur tentang keamanan data privasi duantaranya adalah Undang-undang Nomor 7 Tahun 1971 tentang Ketentuan Pokok Kearsipan, Undang-undang Nomor 8 Tahun 1997 tentang Dokumen Perusahaan, Undang-undang Nomor 7 Tahun 1992 jo Undang-undang Nomor 10 Tahun 1998 tentang Perbankan, Undang-undang Nomor 36 Tahun 1999 tentang Telekomunikasi, Undang-undang Nomor 11 Tahun 2008 tentang Informasi dan Transaksi Elektronik
PERKEMBANGAN INTERNET PADA GENERASI MUDA DI INDONESIA DENGAN KAITAN UNDANG-UNDANG ITE YANG BERLAKU
Authors: Akmala Said
Published: May 2021

Perkembangan internet di Indonesia semakin meningkat dari tahun ke tahun, hal ini membuktikan bahwa internet memiliki peran yang penting terhadap berbagai aspek yang ada. Awalnya internet dikembangkan dan digunakan untuk kepentingan militer di abad 19, namun perkembangan dan kebutuhan akan teknologi terus menuntut internet digunakan di berbagai banyak sektor seperti perdagangan, sosial, hingga ke sistem pemerintahan. Di Indonesia, internet sudah banyak digunakan oleh berbagai kategori usia pengguna mulai dari anak-anak sampai usia lanjut. Padahal seperti yang kita ketahui bersama internet sendiri memiliki banyak sisi positif namun juga banyak hal negatif yang perlu diwaspadai oleh user atau penggunanya. Keterkaitan antara keamanan terhadap data menjadi salah satu hal yang paling penting, karena data merupakan komponen utama harus dijaga dengan baik. Penyalahgunaan data tentu akan menimbulkan banyak kerugian mulai dari pemalsuan data hingga kehilangan data.  Paper ini membahas mengenai sisi positif dan negatif internet khususnya bagi generasi muda di Indonesia yang dikaitkan dengan kasus pelanggaran hukum undang-undang ITE dengan beberapa konsep chain of custody.
EVALUATION OF E-GOVERNMENT INFORMATION SECURITY USING THE DEFENSE IN DEPTH MODEL
Authors: Novianto Fanny
Published: May 2021

The rapid progress of Information and Communication Technology (ICT) makes it easier for people to communicate and get information. Information of strategic value needs to be safeguarded and stakeholders must be aware of all potential vulnerabilities in information and communication system transactions. There are several aspects that must be met in building information security in e-government. The first aspect that must be met is confidentially and privacy. The Ministry of Law and Human Rights of the Republic of Indonesia is currently implementing e-government in internal business processes and public services. One of them is the use of the Correctional Database System (SDP). Data and information in SDP are confidential because one of them contains data and information on criminal offenders in Indonesia. With the use of information technology and the more information presented by the government as part of public services the greater the vulnerability to the security and confidentiality of the information system itself. The research method used is a qualitative method with a case study approach with the application of the defense in depth model to analyze information security involving several layers of security to keep information safe. Descriptive analysis results explain that the design and development of SDPs pay attention to the basic principles of information security, namely confidentiality, integrity and availability of data. But there are vulnerabilities in information security loopholes that are very likely to occur at the layer of host defense, network defense, and physical defense.
Pendekatan DD Sebagai Salah Satu Teknik Akuisisi Perangkat Android
Authors: Yudha Fietyata , Ramadhani Erika , Rahma Fayruz , Hamzah Waldi Nur
Published: May 2021

Teknologi perangkat bergerak berkembang pesat melampaui perkembangan perangkat-perangkat pendahulunya. Meningkatnya penggunaan perangkat bergerak berimplikasi pada perkembangan kejahatan komputer maupun siber. Kejahatan komputer maupun siber bergeser memanfaatkan perangkat bergerak sebagai target ataupun alat bantu melancarkan kejahatan. Meningkatnya kejahatan yang memanfaatkan perangkat bergerak sebagai target maupun alat bantu kejahatan mengharuskan penyidik forensik membuat sebuah model baru dalam proses penyelidikan forensik pada perangkat bergerak. Akuisisi merupakan tahapan forensik yang cukup memiliki perbedaan di antara beberapa perangkat komputer. Pada beberapa aplikasi akuisisi perangkat bergerak yang sudah ada sebelumnya, akuisisi perangkat bergerak disebut dengan istilah ekstraksi. Penelitian ini membahas tentang pendekatan teknik DD pada perangkat bergerak berbasis Android sebagai salah satu teknik dalam melakukan ekstraksi barang bukti yang berbentuk perangkat bergerak. Ekstraksi hanya bisa dilakukan dengan perangkat bergerak dalam kondisi root dan juga pada modecustom recovery. Berdasarkan eksperimen yang sudah dilakukan, hasil ekstraksi menggunakan teknik DD berhasil melakukan akuisisi seluruh sistem berkas yang ada pada perangkat bergerak berbasis Android yang dijadikan sampel uji dengan persentase ukuran hasil ekstraksi di atas 99% jika dibandingkan dengan ukuran asli penyimpanan perangkat tersebut. Hal ini menunjukkan bahwa hasil dari proses akuisisi dengan metode ini menghasilkan hasil yang hampir identik.
INVESTIGASI DAN ANALISIS FORENSIK DIGITAL PADA PERCAKAPAN GRUP WHATSAPP MENGGUNAKAN NIST SP 800-86 dan SUPPORT VECTOR MACHINE
Authors: Hariyadi Dedy , Indriyanto M. Wahyu , Habibi Muhammad
Published: May 2021

WhatsApp merupakan platform instant messaging yang populer di Indonesia. Berdasarkan statistik dari Direktorat Tindak Pidana Siber Kepolisian Republik Indonesia pada tahun 2019 bahwa WhatsApp juga dinyatakan sebagai platform yang sering digunakan untuk mendukung tindak kejahatan. Oleh sebab itu penyidik memerlukan pemodelan untuk mempermudah dalam mengklasifikasikan konten negatif atau positif dari barang bukti digital berupa percakapan. Pemodelan dalam bentuk klasifikasi dapat membantu penyidik untuk mendeteksi kualitas percakapan pada suatu grup sehingga dapat mempercepat proses penyidikan. Dalam penelitian ini menggunakan algoritma Support Vector Machine (SVM) untuk mengklasifikasikan kualitas percakapan pada suatu grup. Pada penelitian ini berhasil mengklasifikan barang bukti digital berupa percakapan suatu grup dengan persentase kurang lebih 96,21% konten negatif. Nilai persentase tersebut dapat dijadikan suatu indikator awal dalam deteksi kualitas percakapan yang bersifat negatif. Sehingga pihak penyidik dapat mengambil tindakan penyidikan lebih intensif terkait percakapan yang bersifat negatif.
Implementation of Web Scraping to Build a Web-Based Instagram Account Data Downloader Application
Authors: Himawan Arif , Priadana Adri , Murdiyanto Aris
Published: May 2021

Instagram has been used by many groups, such as business people, academics, to politicians, to take advantage of the insights gained by processing and analyzing Instagram data for various purposes. However, before processing and analyzing data, users must first pass data collection or downloading from Instagram. The problem faced is that most data collection methods are still done manually as for many parties that offer Instagram account data download services with various price options. This research applied a web scraping method to automatically build a web-based Instagram account data download application so that several parties can use it. The web scraping method was chosen because by using this method, researchers do not need to use Instagram's Application Programming Interface (API), which has access restrictions in retrieving data on Instagram. In this study, application testing was conducted on 15 Instagram accounts with various publications, namely between 100 and 11000. Based on the download data analysis results, the application of the web scraping method to download Instagram account data can successfully download a maximum of 2412 account data. In this application, users can download Instagram account data to Data Collection and then manage it like deleting and exporting data collection in the form of CSV, Excel, or JSON.
Feature Selection Method to Improve the Accuracy of Diabetes Mellitus Detection Instrument
Authors: Wulandari Sari Ayu , Madnasri Sutikno , Pramitasari Ratih , Susilo Susilo
Published: May 2021

The need for aroma recognition devices or often known as enose (electronic nose), is increasing. In the health field, enose can detect early diabetes mellitus (DM) type 2 from the aroma of urine. Enose is an aroma recognition tool that uses a pattern recognition algorithm to recognize the urine aroma of diabetics based on input signals from an array of gas sensors. The need for portable enose devices is increasing due to the increasing need for real-time needs. Enose devices have an enormous impact on the choice of the gas sensor Array in the enose. This article discusses the effect of the number of sensor arrays used on the recognition results. Enose uses a maximum of 4 sensors, with a maximum feature matrix. After that, the feature matrix enters the PCA (Principal Component Analysis) feature extraction and clustering using the FCM (Fuzzy C Means) method. The number of sensors indicates the number of features. Enose using method for feature selection, it’s a variation from 4 sensors, where experiment 1 uses 4 sensors, experiment 2 uses a variation of 3 sensors and experiment 3 uses a variation of 2 sensors. Especially for sensors 3 and 4 using feature extraction method, PCA (Principal Component Analysis), to reduce features to only 2 best features. As for the variation of 2 sensors use primer feature matrix. After feature selection, the number of features is 2 out of 11 variations. Next, do the grouping using the FCM (Fuzzy C Means) method. The results show that using two sensors has a high accuracy rate of 92.5%.
A Comparative Study of Transfer Learning and Fine-Tuning Method on Deep Learning Models for Wayang Dataset Classification
Authors: Mustafid Ahmad , Pamuji Muhammad Murah , Helmiyah Siti
Published: May 2021

Deep Learning is an essential technique in the classification problem in machine learning based on artificial neural networks. The general issue in deep learning is data-hungry, which require a plethora of data to train some model. Wayang is a shadow puppet art theater from Indonesia, especially in the Javanese culture. It has several indistinguishable characters. In this paper, We tried proposing some steps and techniques on how to classify the characters and handle the issue on a small wayang dataset by using model selection, transfer learning, and fine-tuning to obtain efficient and precise accuracy on our classification problem. The research used 50 images for each class and a total of 24 wayang characters classes. We collected and implemented various architectures from the initial version of deep learning to the latest proposed model and their state-of-art. The transfer learning and fine-tuning method showed a significant increase in accuracy, validation accuracy. By using Transfer Learning, it was possible to design the deep learning model with good classifiers within a short number of times on a small dataset. It performed 100% on their training on both EfficientNetB0 and MobileNetV3-small. On validation accuracy, gave 98.33% and 98.75%, respectively.
Students’ Metacognitive Process in Mathematical Problem Solving Based on Cognitive Style
Authors: Apriyani Rina , Ibrahim
Published: May 2021

This study is a qualitative literature review aimed to describe junior high school students’ metacognitive process in mathematical problem solving based on field independent and field dependent cognitive style. The research was done based on these following steps: 1) Data library relevant to variable and in accordance to the data source criteria was collected; 2) the data library was classified according to the grade and the subjects; 3) the data was analyzed. The instruments used in this study were the researchers and interview. The interview was conducted to confirm the classified data. Based e this study, it can be concluded that students using field independent style, competently can employ metacognitive process in planning, monitoring, and evaluating because they can write down the known fact and the question using mathematical symbol, choose the appropriate strategy, and answer the question thoroughly. Students using field dependent style were having difficulties in writing down the known fact and the question using mathematical symbol, choosing an appropriate strategy, and answering the question thoroughly.
Antropología del hombre mortal y morituro. A propósito de la muerte en Julián Marías
Authors: Vilarroig-Martín Jaime
Published: May 2021

En este artículo se sitúa el tema de la muerte en el contexto de la antropología filosófica de Julián Marías: así, se estudian los aspectos que conciernen al hombre (mortal y morituro), sus peligros (la muerte como pura biología y la muerte como mero trámite), los elementos del morir (opacidad del cuerpo, pérdida de la mundanidad y soledad del muriente), las interpretaciones en torno a la muerte (cismundana y transmundana) y por último la razonabilidad de la esperanza en la vida futura.
Migración de estudiantes internacionales a Chile: Desafíos de la nueva educación públic
Authors: Alarcón-Leiva Jorge , Gotelli-Alvial Catalina
Published: May 2021

El artículo aborda la problemática de la inmigración de estudiantes internacionales en el sistema educativo chileno, recogiendo evidencia empírica respecto de los desafíos de gestión directiva y de gestión pedagógica a los que se enfrenta el proceso de instalación de la nueva institucionalidad educativa pública en Chile. En este marco, el objetivo del trabajo es elaborar una tipología de las formas de implementación de la política migratoria a nivel escolar, de los procedimientos adoptados por la gestión educativa y, finalmente, de las prácticas docentes relacionadas con la inclusión de inmigrantes. Para este efecto, se lleva a cabo el análisis, desde la perspectiva de la Teoría Fundamentada, de entrevistas semi-estructuradas aplicadas a docentes directivos y docentes de aula de establecimientos escolares, respecto de situaciones en el contexto de las cuales han debido atender necesidades surgidas a partir de la presencia de estudiantes inmigrantes internacionales. Finalmente, se termina subrayando la necesidad de pasar del estadio de respeto a los derechos al de reconocimiento pleno de la dignidad de los inmigrantes internacionales.
“It’s scary here.” Haunted landscape as a research tool to look into post-expulsion landscapes
Authors: Ćwiek-Rogalska Karolina
Published: May 2021

The article deals with the idea of “haunted landscape” as a research tool in analyzing post-expulsion landscapes. I propose a new perspective on analyzing narrations concerning expulsion and resettlements of lands where a drastic demographic change took place. I use existing research connected with the idea of Jacques Derrida’s hauntology, as well as other analytical sources dealing with folktales of different regions. As material for analysis, I propose various records from ethnographic research conducted in the Czechoslovak borderlands, stored at the Institute of Ethnology of the Czech Academy of Sciences, concerning the space of a “traditional house” and the new settlers’ views on their new home.
Análisis lexicométrico de los mensajes publicitarios de las grandes marcas en España ante la crisis del COVID
Authors: Sánchez Sandoval Raquel
Published: May 2021

La crisis de la COVID-19 es una crisis sociosanitaria, política y económica, pero sobre todo es una crisis internacional y sin precedentes. Ante esta difícil situación, las grandes marcas se han visto obligadas a procurar cambios en todos los sentidos. Desde una perspectiva publicitaria, esta investigación se plantea para averiguar los cambios exactos que se hayan podido producir para adaptar sus mensajes publicitarios al nuevo escenario de pandemia. Mediante una metodología basada en el análisis de contenido, se lleva a cabo una revisión lexicométrica de los mensajes de cerca de una veintena de marcas muy relevantes para la economía española, y se comparan los copies utilizados por estas duranteel año 2019 con los del 2020, a partir del momento en el que se decreta el estado de alarma. El objetivo es comprobar la existencia de una tendencia al cambio, que se intuye peculiar, por cuanto se parte de la hipótesis de que las estrategias comunicativas de las marcas objeto de estudio adoptan una doble finalidad: la social y la comercial, aunando a ambas en sus mensajes, para mostrar su empatía al público ante las nuevas circunstancias de crisis sobrevenidas, mientras sus mensajes siguen constituyendo un recuerdo fiel de su labor empresarial para el consumidor. La perseverancia de estas marcas ante la incertidumbre y la adversidad se ha traducido en mensajes muy variopintos que, una vez analizados, dan fe de su gran capacidad de cambio y adaptabilidad, apostando por la publicidad como valor seguro ante este inédito momento.
aplicación del marketing olfativo en el entorno comercial
Authors: Martín Moraleda Ignacio José , Majós Cullel Albert
Published: May 2021

Actualmente en todos los mercados las marcas necesitan incrementar sus ventas, tanto en entornos presenciales como en e-commerce y por eso el uso del neuromarketing es una potente metodología para conseguirlo. Dentro de esta potente herramienta que es el neuromarketing, el marketing olfativo tiene una importante relevancia, dada su capacidad incidir directamente en el cerebro y en el aspecto neurofisiológico del sentido del olfato, y a su facultad para incidir directamente en el sistema límbico, a diferencia del resto de los sentidos. Así, se expone la investigación sobre el uso y aplicación en el entorno comercial español mediante el método del caso por observación directa de experiencias ejecutadas, y usando fuentes de información directas e indirectas disponibles. De esta forma se estudia cualitativamente el uso y aplicación del marketing olfativo como proceso comunicativo y experiencia neuro física aplicado en las ventas. El análisis descriptivo y cualitativo de casos se centra en su uso y cómo ayudan en el incrementan las ventas, señalando variables. Y como la relación de elementos audiovisuales. Los resultados señalan a la alimentación y moda, como principales mercados del marketing olfativo. Concluyendo cómo supone una herramienta de predicción y estudio del comportamiento de usuarios, ventas y marcas.
A Technical Report on Reliability Measurement in Asymmetry Studies
Authors: Bailey Chris A. , Sato Kimitake , McInnis Timothy C.
Published: May 2021

Bailey, CA, Sato, K, and McInnis, TC. A Technical report on reliability measurement in asymmetry studies. J Strength Cond Res 35(7): 1779–1783, 2021—Much of the current literature on asymmetry in sport performance may be biased by evaluating reliability before quantifying the asymmetry metric. This technical report aimed to evaluate the reliability of asymmetry measurements in countermovement jumps (CMJs) by providing measures before production of asymmetry metrics, after production of scalar- and vector-based asymmetry metrics, and to analyze the resulting differences that can lead to misinformed decision making. Thirteen collegiate baseball players (19.9 ± 1.3 years, 82.2 ± 10.9 kg) participated in CMJ testing on 2 force plates to evaluate symmetry index (SI) scores as scalar (asymmetry magnitude only) and vector (asymmetry magnitude and direction) quantities. Relative and absolute reliability were evaluated for peak force (PF), scalar PF SI, and vector PF SI. Results showed that reliability measures produced on the constituent force-time variable provide much more favorable results compared with evaluating reliability of the asymmetry measure itself (coefficients of variation of 10.4–15.7% vs. 63.2–1,497.1%). Findings also showed that reliability is altered depending on whether asymmetry is quantified as a scalar or vector. Asymmetry should likely be quantified as a vector for reliability purposes because that allows variability in both magnitude and direction. These findings demonstrate that inadequate evaluation of reliability in asymmetry leads to biased results. Practitioners should use caution when considering the results of asymmetry assessments as they may not be as reliable as they are often portrayed.
High Responders to Hypertrophic Strength Training Also Tend to Lose More Muscle Mass and Strength During Detraining Than Low Responders
Authors: Räntilä Aapo , Ahtiainen Juha P. , Avela Janne , Restuccia Joel , Kidgell Dawson , Häkkinen Keijo
Published: May 2021

Räntilä, A, Ahtiainen, JP, Avela, J, Restuccia, J, Kidgell, DJ, and Häkkinen, K. High responders to hypertrophic strength training also tend to lose more muscle mass and strength during detraining than low responders. J Strength Cond Res 35(6): 1500–1511, 2021—This study investigated differences in individual responses to muscle hypertrophy during strength training and detraining. Ten weeks of resistance training was followed by 6 weeks of detraining in men (n = 24). Bilateral leg press (LP) one-repetition maximum (1RM) and maximal electromyography (EMGs) of vastus lateralis (VL) and vastus medialis, maximal voluntary activation (VA), transcranial magnetic stimulation for corticospinal excitability (CE), cross-sectional area of VL (VLCSA), selected serum hormone concentrations were measured before and repeatedly during training and detraining. In the total group, VLCSA increased by 10.7% (p = 0.025) and LP 1RM by 16.3% (p < 0.0001) after training. The subjects were split into 3 groups according to increases in VLCSA: high responders (HR) > 15% (n = 10), medium responders (MR) 15–4.5% (n = 7), and low responders (LR) < 4.5% (n = 7). Vastus lateralis CSA in HR and MR increased statistically significantly from pre to posttraining but not in LR. Only HR increased LP 1RM statistically significantly from pre to post. Maximal EMG activity increased 21.3 ± 22.9% from pre- to posttraining for the total group (p = 0.009) and for MR (p < 0.001). No significant changes occurred in VA and CE or serum hormone concentrations. During detraining, HR showed a decrease of −10.5% in VLCSA, whereas MR and LR did not. None of the subgroups decreased maximal strength during the first 3 weeks of detraining, whereas HR showed a slight (by 2.5%) rebound in strength. The present results suggest that strength gains and muscle activation adaptations may take place faster in HR and decrease also faster compared with other subgroups during detraining.
EFFECT OF GOOD AND POOR POSTHARVEST HANDLING PRACTICES ON THE LOSSES IN LETTUCE AND TOMATO SUPPLY CHAINS
Authors: ÖZDEMİR İbrahim Sani , SEMİZER Hatice
Published: May 2021

The amount of losses caused by good (GHP) and poor (PHP) practices in the post-harvest processes of lettuce and tomato was determined under real supply chain conditions. Along with the commercial losses, changes in the nutritional and microbiological quality of crops were also quantified. The results showed that the weight loss of lettuce and tomato was reduced three and nine-fold, respectively by GHP during supply chains. The retail-display and transportation of the product in the postharvest process were determined to be the most critical supply chain stages affecting quality. The nutritional quality of crops exposed to PHP has shown differences by both crop and compound. The microbial quality of the produces, however, was adversely affected by the poor postharvest handling practices. In conclusion, still huge amounts of postharvest losses can be avoided if already known good postharvest handling practices are employed with a holistic perspective in produce supply chains.
Estimating the impact of COVID-19 on the Spanish economy with input-output analysis
Authors: Febrero Paños Eladio , Bermejo Patón Fernando
Published: May 2021

In this paper we present a forecast of the impact of measures to stem Covid-19 on the Spanish economy at a highly disaggregate level, using input-output techniques. Our estimations cover the period 2020-2021, and we consider two scenarios depending on the possibility of a second wave of massive infections in the autumn of 2020. In 2020, the lockdown of the population and the shutdown of a large part of the production system for several weeks are a supply-side shock that will be followed by a demand-side shock whose impact is expected to be even larger. In 2021 there will be some recovery, although we believe that it will not be sufficient for offsetting the initial negative shock. al negative shock.
Microstructure of thermally modified radiata pine wood
Authors: Cabezas-Romero José Luis , Salvo-Sepúlveda Linette , Contreras-Moraga Helga , Pérez-Peña Natalia , Sepúlveda-Villarroel Víctor , Wentzel Maximilian , Ananías Rubén A.
Published: May 2021

The thermal modification of wood is a potential alternative method for improving wood dimensional stability and increasing the resistance of wood to decay. However, during thermal modification, morphological changes occur within the microstructure of the cell, and these confer different properties to the wood. This study investigated the effects of the thermal modification process on the microstructure of radiata pine juvenile wood. Therefore, anatomical measurements were performed via optical microscopy in selected earlywood and latewood samples after each treatment, and the results were compared to untreated wood samples. In this study, two temperatures (190 °C and 210 °C) were considered for the thermal modification process. The results showed that the level of temperature of modification affected to microstructure of cell wall. The cell wall thickness decreased as treatment temperature increased, whereas the average lumen diameter increased slightly as temperature increased. Thermally modified radiata pine showed signs of damage (cracks, broken cells and deformations in the wood cell wall). The proportion of destroyed area increased as temperature increased, and significant differences were evident for the thermal treatment at 210 °C.
Out-of-plane relative motion of a spacecraft with an aerodynamic compensator during contactless space debris removal
Authors:   Institute of Technical Mechanics of the National Academy of Science of Ukraine and the State Space Agency of Ukraine, Dnipropetrovsk, Ukraine, Fokov A.A. , Khoroshylov S.V. ,   Institute of Technical Mechanics of the National Academy of Science of Ukraine and the State Space Agency of Ukraine, Dnipropetrovsk, Ukraine, Svorobin D.S. ,   Institute of Technical Mechanics of the National Academy of Science of Ukraine and the State Space Agency of Ukraine, Dnipropetrovsk, Ukraine
Published: May 2021

The article investigates the feasibility of using an aerodynamic compensator for contactless removal of space debris from low Earth orbits, taking into account aerodynamic disturbances in the direction perpendicular to the orbital plane. The object of the research is a modified scheme of the “ion beam shepherd” de-orbiting concept. The modification consists in replacing an additional electric thruster with an aerodynamic compensator designed to compensate the shepherd spacecraft motion caused by the reaction force of the main electric thruster, the ion plume of which creates a “braking” effect on the space debris object. The shepherd spacecraft with the aerodynamic compensator has a relatively large cross-sectional area. In this case, it is necessary to control the relative motion caused by the aerodynamic disturbances in the direction perpendicular to the orbital plane. This control requires additional propellant for the thrusters of the relative motion control system of the shepherd spacecraft. The article presents the calculation of the propellant consumption using a number of simplifying assumptions. The validity of these assumptions is verified by numerical integration of the equations of relative motion. The feasibility of using the aerodynamic compensator for contactless removal of space debris, taking into account aerodynamic disturbances acting in the direction perpendicular to the orbital plane, is shown.
Mathematical model of fuselage oscillations at transonic flight speeds
Authors:   The National Defence University of Ukraine named after Ivan Cherniakhovsyi, Kyiv, Ukraine, Safronov A.V. , Syrotenko A.M. ,   The National Defence University of Ukraine named after Ivan Cherniakhovsyi, Kyiv, Ukraine, Semon B.Y. ,   The National Defence University of Ukraine named after Ivan Cherniakhovsyi, Kyiv, Ukraine, Nedilko A.N. ,   The National Defence University of Ukraine named after Ivan Cherniakhovsyi, Kyiv, Ukraine
Published: May 2021

Ensuring the safety of supersonic aircraft flights and aerospace systems in the transonic range of M flight numbers still remains an urgent scientific and applied problem. This is caused by the peculiarities of the aerodynamic surfaces flow by inhomogeneous (transonic) air and is due to the emergence of various aeroelastic phenomena in these flight modes and the current lack of a generally accepted model of transonic flutter, even for aerodynamic control surfaces. Based on a joint analysis of the conditions for the formation of shock waves on the surface of the aerodynamic profile, changes in the parameters of supersonic flow across the Prandtl-Meyer expansion fan, and the hypothesis of "dynamic curvature of the aerodynamic profile", the approximate laws of interaction of elastic bending vibrations of the fuselage with fluctuations in shock waves were obtained. The obtained regularities are used to substantiate a mathematical model for estimating excited forces and excited bending moments of the fuselage. The analysis of the obtained mathematical model confirms the theoretical possibility of the appearance of fuselage forms of transonic flutter in supersonic aircraft, which was observed in the flight experiment and which is due to the interaction of shock waves with the angular velocity of the fuselage elastic bending vibrations. With the accepted in the article input geometrical data of a fuselage aerodynamic surfaces’ profile, the maximum possible values of fuselage bending moments are obtained using the developed mathematical model. The obtained mathematical model can be used for a preliminary approximate assessment of the transonic flutter fuselage forms characteristics in supersonic aircraft and aerospace systems.
Collaborative Care in the Identification and Management of Psychosis in Adolescents and Young Adults
Authors: Hua Liwei L. , Alderman Elizabeth M. , Chung Richard J. , Grubb Laura K. , Lee Janet , Powers Makia E. , Upadhya Krishna K. , Wallace Stephenie B.
Published: May 2021

Pediatricians are often the first physicians to encounter adolescents and young adults presenting with psychotic symptoms. Although pediatricians would ideally be able to refer these patients immediately into psychiatric care, the shortage of child and adolescent psychiatry services may sometimes require pediatricians to make an initial assessment or continue care after recommendations are made by a specialist. Knowing how to identify and further evaluate these symptoms in pediatric patients and how to collaborate with and refer to specialty care is critical in helping to minimize the duration of untreated psychosis and to optimize outcomes. Because not all patients presenting with psychotic-like symptoms will convert to a psychotic disorder, pediatricians should avoid prematurely assigning a diagnosis when possible. Other contributing factors, such as co-occurring substance abuse or trauma, should also be considered. This clinical report describes psychotic and psychotic-like symptoms in the pediatric age group as well as etiology, risk factors, and recommendations for pediatricians, who may be among the first health care providers to identify youth at risk.
Demographic Variation in Health Insurance Coverage: United States, 2019
Authors: Cohen Robin , Cha Amy , Terlizzi Emily , Martinez Michael
Published: May 2021

This report presents national estimates of different types of health insurance coverage and lack of coverage. Estimates are presented by selected sociodemographic characteristics.
Improved water solubility of quercetin by preparing complexation with cyclodextrins in binary solvent
Authors: Thi Lan Pham , Long Khanh Pham , Thi Ngoan Nguyen , Hai Khoa Le , Xuan Minh Vu , Anh Son Nguyen , Dai Lam Tran
Published: May 2021

The antioxidant capacity of polyphenols have been widely used in food and pharmaceutical industries. Quercetin (Quer) is a polyphenolic flavonoid that shows several biological effects such as antioxidant, antitumor, antibacterial and antiproliferative effects both in-vitro and in-vivo. However, the solubility of quercetin in water is poor. Thus, it is essential to improve solubility of quercetin in pharmaceuticals by making its complexation with other compounds. In this study, the synthesis of the 2-hydroxypropyl-β-cyclodextrin complex with quercetin (Quer-HPβCD) in the form of nanoparticles in water-ethanol solvents has been carried out. The results showed that the obtained yield of (Quer-HPβCD) complexation in binary solvent was greater than that in pure water. The highest Y value was 80% in a binary solvent with 20% v/v of ethanol. The composition, morphology, structural and thermodynamic properties of the nanoparticles Quer-HPβCD have been determined. This study demonstrated that using mixed water- ethanol solvent and lyophilization technique was able to produce quercetin nanoparticles with significantly smaller particle size. The nanoparticles have a spherical shape with an average size of about 40-60 nm. The results of the phase solubility diagram showed that in water the solubility of quercetin increased and linearly depended on the concentration of host’s molecule while Quer and HP-βCD obtained a 1:1 stoichiometric complex. The stability constant of (Quer-HPβCD) complex was found to be logK = 2.56. The Gibbs energy change of the complexation reaction was found to be -14.60 kJ/mol.
Purification and characteration of xylanase from Aspegillus oryzae VTCC F187
Authors: Tuyen Do Thi , Thu Huyen Hoang , Sy Le Thanh Nguyen , Thi Yen Hoang , Thi Mai Anh Dao
Published: May 2021

Xylanase is produced by many bacteria and fungi, among which Aspergillus oryzae is considered as a potential source. In this study, a xylanase was isolated and purified from the crude culture filtrate of Aspergillus oryzae VTCC F187 after 7 days of growth on the optimal culture containing 7% corncob and 5% soybean powder under liquid-state fermentation. After two steps purification process including gel filtration chromatography (Sephadex G-75) incorporating with anion-exchange chromatography (DEAE-sephadex), obtained xylanase was purified with the yield and purity of 24.9% and 3.91 fold, respectively. The molecular mass of the purified xylanase determined by SDS–PAGEwas 32 kDa with a specific activity of 1268.0 U/mg towards 1% (w/v) of birch wood xylan. The xylanase displayed its optimum activity at 60°C, pH 6.5, and the enzyme remained active effectively within pH 3.0–5.0 and at the temperature below 37°C. Some substances were tested at concentration of 2% (v/v) such as β-mercaptoethanol, DMSO, Tween 80 and 10 mM NaN3 slightly decreased xylanase activity and reached over 85%. While EDTA 10 mM and SDS at concentration of 2% inhibited more strongly, xylanase activity was only 77.6% and 56.6% comparing with control one, respectively. The biochemical characteristics suggested that the xylanase has a potential application, including use as a feed enzyme or using hydrolysis to produce environmentally friendly Bio-products.
Diversity of reductive dechlorinating bacteria and archaea in herbicide/dioxin-contaminated soils from Bien Hoa airbase using metagenomic approach
Authors: Huy Pham Quang , Kim Thoa Nguyen , Thi Cam Ha Dang
Published: May 2021

Heavy herbicide/dioxin contamination of soil was derived a negative effect on the microbial biodiversity, soil quality, animal and human health in Central and South of Vietnam. This is the first time, the application metagenomic tools investigated soil microbial structural community of undetoxified (C - 21,605 ng TEQ/kg dry soil) and bioremediated (BHR - 13.2 ng TEQ/kg dry soil) which could not only help us to explore the potential risks associated with contaminated soils but also provide insights into possible soil bioremediation technology by stimulating indigenous microbes. Four methanogen genera, Methanosarcina (24 - 322 OTUs respectively C – BHR samples), Methanocella (13 - 63 OTUs), Methanosaeta (7 - 42 OTUs) and Methanococcus (6 - 69 OTUs) have been dominantly detected in both two metagenomes. Twenty genera of archaea belonging to the phylum Euryarchaeota were found. They could be clustered within 14 different families and nine archaeal genera including unclassified archaea (17 OTUs – C; 145 OTUs - BHR). In metagenome C and BHR, 12 genera of sulfate reducing bacteria (SRB) with different number (2 - 77; 61 - 904 OTUs) respectively were presented. Four SRB genera are dominated in C metagenome, it is linear also in BHR. The highest number is genus Desulfovibrio detected in both examined metagenomes. However, the relationship features of these bacterial groups need deeply investigation for understanding their role of reductive dechlorination, anaerobic degradation in herbicide/dioxin contaminated heavy soil and sediment. These results provide additional evidence to explain why heavy herbicide/dioxin contaminated soil was detoxified successfully at Bien Hoa airbase, Vietnam.
Collection, freezing of Ban epididymal sperm and evaluation of in vitro fertility after thawing
Authors: Viet Linh Nguyen , Thi Nhung Nguyen
Published: May 2021

Many researches on characteristics of porcine ejaculated semen on popular commercialized breeds collecting at breeding centers or households with pig breeding services have been carried out in Vietnam. However, very few investigation had been dealt with epididymal sperms, especially the ones from boar of Ban, a popular Vietnam native mini-pig breed which is usually freely raised in far rural and mountainous regions in some provinces of Northern Vietnam. In the present study, we surveyed on criteria of epididymal sperms from 4 Ban boars at collection, after freezing and thawing processes, and tested their fertility by an in vitro fertilization and embryo culture experiment. Approximate volume of sperm collected from a Ban boar did not differ (3-4 mL), with sperm concentration from 6.4 x 109 to 11.3 x 109 sperm/mL. Motility varied from 8.7 to 27.0%, whereas vitality was from 58.0 to 85.6%. After freezing and thawing, the motility of sperm slightly decreased to values of 6.3 to 25.7%, and viability significantly decreased to values of 41.3 to 79.6%. No difference was found between rates of abnormal morphology before and after freezing and thawing (10.6 to 31.0% and 12.0 to 32.0%, respectively). A test by in vitro fertilization with Landrace oocytes revealed that two sperm lots had acceptable in vitro fertility with rates of blastocyst formation from 14.4 to 18.8%. In conclusion, a study on collection, freezing and fertility testing of epididymal sperm collected from Ban boars has been carried out. The results of the present study could contribute necessary information as well as standardized sperm lots as important materials to further research on in vitro fertilization of Ban in Vietnam.
Phylogenetic analyses of ribosomal transcription units from Haplorchis taichui and H. pumilio species of Heterophyidae (Platyhelminthes: Opisthorchiata)
Authors: Viet Ha Le Thi , Thi Khue Nguyen , Van Quyen Dong , Thanh Hoa Le
Published: May 2021

Heterophyidiasis caused by minute intestinal flukes becomes of public concern in many countries worldwide. Haplorchis taichui and H. pumilio, belonging to the family Heterophyidae (Platyhelminthes: Trematoda) are two of many infecting humans and commonly found in Vietnam. Sequence study of these two small intestinal flukes is still very limited, hence we need more prospective markers for taxonomic identification and classification. This study provides complete coding sequence of the ribosomal transcription units (rTU) from H. taichui and H. pumilio (Vietnamese samples) and demonstrates the use of complete 28S rDNA sequences for phylogenetic analysis.The complete coding sequence of the rTU (from 5' 18S to 3' 28S), consisting of complete 18S, ITS-1, 5.8S, ITS2 and complete 28S rRNA genes and spacers, from H. taichui (7,268 bp) and H. pumilio (7,416 bp) from human hosts in Vietnam, were determined and annotated. The 18S and 5.8S genes of both species were of the same length (1,992 bp/18S, 160 bp/5.8S), but 28S genes differed (3,875 bp/H. taichui and 3,870 bp/H. pumilio). ITS-1 in H. taichui (797 bp) and ITS-2 in H. pumilio (280 bp) do not contain tandem repeat units (TRUs), while ITS-1 in H. pumilio (1,106 bp) contains 3 TRUs of 136 bp/each and 2 TRUs of 116 bp/each and ITS-2 in H. taichui (444 bp) contain 3 TRUs (83–85 bp/each). A phylogenetic tree inferred from the alignment of complete 28S rDNA sequences of 32 trematode strains/species, including 2 Vietnamese Haplorchis spp. and 24 species of 8 families in the suborders Xiphidiata (families Nanophyetidae, Paragonimidae, Collyriclidae), Opisthorchiata (Heterophyidae, Opisthorchiidae), and Echinostomata (Echinostomatidae, Fasciolidae).  and Schistosoma japonicum of the family Schistosomatidae is used as an outgroup. The topology of the phylogenetic tree clearly confirmed the status of the Vietnamese H. taichui and H. pumilio species. These species gathered in a group (in the family Heterophyidae) clearly identified in the position of "sister” group to those in the family Opisthorchiidae (suborder Opisthorchiata, superfamily Opisthorchioidea).
Development of an ELAA kit to detect neomycin in milk
Authors: Truong Giang Nguyen , Thi Bich Dao Tran , Quang Huan Le , Thi Huyen La
Published: May 2021

Antibiotics used in livestock production offer various benefits as an antimicrobial agent, growth promoter, and feed effective improvement. However, the abuse of antibiotics leads to antibiotic resistance which may seriously threaten human and animal welfare, and growing levels of antibiotics or antibiotic-resistant bacteria in the environment increase the numbers of drug-resistant infection outbreaks. Therefore, many detection methods have been being developed to quickly assess antibiotic content and its residues in foods. Among many analytical methods, the aptamer-based biosensor has considerable attention for its outstanding advantages such as high specificity, high sensitivity, and good selectivity. We use the ELAA (Enzyme-Linked Aptamer Assay) method - a variant of ELISA - which has a high affinity with neomycin. Firstly, we investigated different buffers to create the Neo-BSA complex. As result, 2-(N-morpholino) ethanesulfonic acid (MES) buffer pH 7 was found with the best results. Next, to help the Neo-BSA complex be fixed well on polystyrene wells, we surveyed various buffers and found the coating buffer (50mM Bicarbonate buffer, pH 9.6) rated as the most suitable for this process. In addition, the quality of the kit is also assessed through competitive ELAA reaction components. Therefore, we have investigated and optimized conditions such as aptamer concentration 25 nM in PBS buffer, and the biotinized aptamers did not need heat treatment prior to joining the reaction. From the results, we have successfully developed a calibration curve for antibiotic residue in milk using the ELAA technique, linear range 0,1 ng/mL and 100 ng/mL. Then, we initially surveyed 20 milk samples found that the ELAA method was consistent with the results from LC-MS/MS was obtained showing no difference between the two methods. We continued to test the samples to determine the kit’s sensitivity and specificity. The results showed that the kit has a specificity and sensitivity of 100%. Finally, LOD and LOQ value had xavg = 0.448; SD = 0.22, LOD = xavg + 3SD = 1.11 (ng / ml); LOQ = x tb + 10SD = 2.65 (ng / mL). We will continue to optimize the kit before being brought to the market.