bluuebunny/crossref_metadata_2025 huggingface dataset:
Q-band oscillator at 49GHz for broadband photonic microwave frequency conversion based on a Kerr soliton crystal micro-comb
Authors: Moss David , tan mengxi , xu xingyuan
Published: August 2021

We report a broadband microwave frequency converter based on a coherent Kerr optical micro-comb generated by an integrated micro-ring resonator. The coherent micro-comb displays features that are consistent with soliton crystal dynamics with an FSR of 48.9-GHz. We use this to demonstrate a high-performance millimeter-wave local oscillator at 48.9-GHz in the Q-band for microwave frequency conversion. We experimentally verify the microwave performance up to 40 GHz, achieving a ratio of −6.8 dB between output RF power and IF power and a spurious suppression ratio of > 43.5 dB. The experimental results show good agreement with theory and verify the effectiveness of microwave frequency converters based on coherent optical micro-combs, with the ability to achieve reduced size, complexity, and potential cost.
Comparing the efficacy of three diagnostic tools (microscopic examination, conventional PCR, and Real-Time PCR) in detecting Theileria equi infection among Egyptian equines
Authors: Soliman Ahmed M. , Amer Moaz M. , Memon Fareed Uddin
Published: August 2021

Equine theileriosis represents one of the main and serious health problems affecting equines industry globally, that is caused by tick-borne protozoan parasite called T. equi. This study aimed to assess the sensitivity of three diagnostic tools named: microscopic examination of a blood smear, conventional PCR, and Real-Time PCR (qPCR) to detect T. equi among equine population (n = 116) raised in Giza Governorate, Egypt. Microscopic examination of Giemsa-stained blood smears revealed the infection of 16.4% (19/116) of examined equines by T. equi while conventional PCR and qPCR revealed that 29.3% (34/116) and 43.1% (50/116) of examined equines were infected with T. equi respectively. Our results demonstrated that the qPCR had the highest sensitivity (100%) followed by conventional PCR (68%) while microscopic examination had the lowest sensitivity (38%). Furthermore, the negative predictive value (NPV) of qPCR was the highest (100%) compared to conventional PCR and microscopical examination (80.49% and 68.04% respectively) which revealed that all negative cases detected by qPCR were certainly correct compared to the other two diagnostic assays. Therefore, it is highly recommended to incorporate PCR diagnostic assays (conventional PCR and qPCR) alongside microscopic examination to evaluate the epidemiological status of equine theileriosis.
Turkish cases of Mabry Syndrome with a novel homozygous mutation in PGAP2 gene
Authors: Kartal Ayşe , Jaiswar Sandeep
Published: August 2021

Hyperphosphatasia with mental retardation syndrome is a genetic disorder. We report two siblings aged three years and fourteen years who were investigated for global development delays, seizures and dysmorphic features. A novel missense variant, c.1003G>A (p. Ala335 Thr chr11.3,846,572 NM_001256236.1), in PGAP2 gene was identified using whole-exome sequencing. We highlight the significance of elevated alkaline phosphatase in patients with certain dysmorphic features, can lead to the diagnosis of hyperphosphatasia with mental retardation syndrome using exome sequencing.
Functioning of the system for evaluating the effectiveness of international technical assistance: the experience of the European Union and the world's leading countries
Authors: Harust Y.V. , Melnyk V.I. , Mirgorod-Karpova V.V. , Pavlenko B.O. , Kiiashko Yu.M. , Maletov D.V.
Published: August 2021

The authors of the article study the foreign experience of the administrative and legal organization of systems for evaluating the effectiveness of international legal assistance (ITA). The article notes that the definition of international technical assistance in different countries is interpreted differently. States, at the national level, establish their own definitions of the concept, which may differ in content and characteristics. It is established that the assessment of the effectiveness of the use of ITA has the ultimate goal to ensure its better use. Both ITA donors and recipients are interested in this. The largest ITA donors have been identified as Japan, the United States, and the European Union. Each of these donors has its own system for evaluating the effectiveness of the ITA provided. In the study of the model for evaluating the effectiveness of the US ITA, the key role of the United States Agency for International Development (USAID) was highlighted. The Agency itself has developed tools to monitor the assistance provided, implements analysis programs, publishes reports, and conducts training among its employees. In Japan, the Ministry of Foreign Affairs of Japan and the Japan International Cooperation Agency (JICA) have been found to be the central policy-makers in Japan. These bodies issue regulatory regulations on which the performance appraisal process is based, analyze experience, conduct training, and publish reports on their official websites. In the Japanese model for assessing the effectiveness of the provision and use of ITA's, the key features are assessing the usefulness of the assistance provided in terms of Japan's diplomatic interests. It was found that a characteristic feature of the evaluation system of the European Union is the functioning of the Regulatory Control Council, which reviews and improves the legislation in the field of ITA. The article establishes the relationship between national legal systems and global standards for assessing international assistance. It is established that the donors of the ITA, for the organization of the system of evaluation of its effectiveness, use as a basis the Quality Standards for evaluation, which are developed by the Development Assistance Committee (DAC) at the Organization for Economic Cooperation and Development (OECD).
Legal aspect of the symbiosis of educational sphere and management activities: issues on leadership style and methods
Authors: Sukhonos V.V.
Published: August 2021

The establishment of Ukraine as a state governed by the rule of law raises on the agenda the question of the level of legal culture in our country. In turn, the very structure of legal culture, despite its conditionality, among other things, contains such an element as the level of development of legal activity, including education. In many ways, the organization of education becomes the basis for the formation and development of civil society. The leading role in this process belongs to the head of the educational institution. That is why the problems of management of educational institutions of different levels in modern conditions are becoming quite acute. In this regard, the style and methods of leadership, the main methods and techniques of the leader become quite relevant, especially because today they began to pay significant attention to the issues of the most effective interaction of the leader with subordinates. Of course, scholars should not be considered to completely ignore education, but without underestimating the work of previous scholars, it should be noted that most of them have not explored the legal aspect of the symbiosis of education and management. That is why there is a need to analyze the style and methods of leadership used by managers in their practice in the context of the legal aspect of the symbiosis of education and management, as well as the choice of the best option to influence subordinates. The implementation of this requires the solution of relevant scientific problems. First, to outline in general the current situation in the field of national education. Second, describe the leader as a person. Third, explore leadership styles and their types. Fourth, analyze leadership techniques. Fifth, determine the importance of monitoring the implementation of the tasks of leadership methods. The study found that the style and methods of leadership, largely depend on the daily activities of the leader and his training. At the same time, the educational sphere is almost indistinguishable from any other in the context of management, although it has its own specifics related to the focus on education. It seems that the legal consolidation of the daily activities of the head of the educational institution, his techniques, style and methods of work is of some relevance today, because the state at different levels pays attention to the most effective interaction of the head with subordinates.
Regarding the concept of sale of the debtor's property in bankruptcy proceedings
Authors: Tyurina Y.E.
Published: August 2021

The article substantiates the theoretical and legal provisions on the concept of sale of the debtor's property in the bankruptcy process. It is established that at the legislative level the interpretation of the term "sale" is quite broad, because it covers the conclusion of sales not only contracts of sale. It is noted that it is impossible to identify the concept of "sale" and "sale", because the content load of the concept of "sale" is much wider than the content load of the term "sale". It is emphasized that the concept of "sale of the debtor's property in the process of bankruptcy" should be considered as a direct conclusion of an agreement on the alienation of the debtor's property. It is argued that the inclusion in the contracts, which mediate the sale of property at auction only agreements that provide for the transfer of ownership. Emphasis is placed on the fact that civil law contracts of sale and business contracts can be concluded in the same way at auctions for the sale of the debtor's property. It is emphasized that the provisions of the Bankruptcy Procedure Code establish an exception to the general rules on the form of these types of agreements and provide for the conclusion of auctions for the sale of property of the debtor in a simplified manner, ie by taking implicit actions. It is determined that the protocol on the auction and the act of acquisition of property at the auction are documents that state the fact of victory of the buyer under certain conditions. Based on the finalization of the provisions on the sale of the debtor's property in bankruptcy, its revised doctrinal definition is formulated as a stage in the process of selling the property, which involves concluding a contract of sale at auction in a simplified manner, on commission or direct alienation to the buyer.
Stage interventions in the treatment of patients with malignant diseases of the common bile duct terminal segment complicated by acute mechanical jaundice
Authors: Kosulin Stanislav , Vinnik Juriy , Ivanova Julia
Published: August 2021

Obstructive mechanical jaundice is a well-researched complication of various diseases and causes, yet considering patients` condition with malignant diseases according to the stage of the malignant process, severity of complications and etc. Selection of the most appropriate method of surgical treatment is always an option where it is essential to consider finding a way between efficiency and surgical trauma.

The aim of the research is to optimize the results of surgical treatment of patients with malignant tumours of the common bile duct terminal segment complicated by acute mechanical jaundice.

Materials and methods: patients over 18 y.o. with duodenal obstruction; the presence of other active cancer pathology or blood diseases.

The research was performed on 2 different groups divided according to the use of biliary passability restoring method concluding the preferability of minimally invasive methods of bile duct decompression.

Results: minimally invasive methods are not inferior to the effectiveness of biliary decompression comparing to open methods, have a number of advantages, such as minimal invasiveness, relative safety, low incidence of complications and mortality

Conclusions: the introduction of the developed algorithm for surgical treatment of blastomatous mechanical jaundice with the consistent use of antegrade and open methods, as well as antegrade, retrograde and “rendezvous” techniques in surgically incurable patients allowed to reduce the number of early postoperative complications from 32.7 % to 13.3 %, the number of complications requiring surgery – from 5.8 % to 1.3 % and the level of postoperative mortality – from 11.5 % to 2.7 %.
Development of meat-containing breads with hemp seed flour and turkey meat of mechanical crumbing
Authors: Bozhko Nataliia , Pasichnyi Vasyl , Tischenko Vasyl , Marynin Andriy , Shubina Yevgenia , Strashynskyi Igor
Published: August 2021

The work is devoted to the development of meat-containing breads with a combination of turkey MCPM (mechanically crumbed poultry meat) and hemp flour with further study of functional-technological and sensory characteristics and the study of nutritional and energy value of finished products. The aim of the study was to investigate the effectiveness of the use of hemp seed flour in the technology of baked meat products.

It was proved, that the combination of turkey MCPM and hemp flour in meat-containing breads allows to produce products with high nutritional characteristics. It was found, that the introduction of turkey in the recipe of MCPM in combination with hemp seed flour allows to obtain bread with a mass fraction of protein 18.03–19.53 g/100 g of the product. The protein concentration in the experimental samples exceeded the analogue by 3.21–11.79 %. The fraction of fat in meat-containing breads increased by an average of 37 % due to the inclusion of turkey in the recipe of MCPM. The inclusion of turkey MCPM in the recipe up to 47 % increases the concentration of macro- and micronutrients in bread to 2.06 ± 0.05 g / 100 g.

The inclusion of hemp flour in the recipe of baked products with a high content of turkey MCPM improves the functional, technological and organoleptic properties of the products. The increase in protein content by 3.21–11.80 %, fat – by 47.84–56.83 %, energy value – by 26.52–30.23 % was determined.

The high efficiency of combining turkey MCPM with hemp seed flour was confirmed in the study of functional and technological properties (FTP) of model minced meat. The ratio of MCMP: hemp seed flour 41: 8, 44:10, 47:12 improves WBC (water-binding capacity) by 13.46–22.15 %, WRC (water-retaining capacity) - by 10.34–21.43 %, FRC (fat-retaining capacity) – by 17.2–26.9 %. It was established, that the best indicators of FTP of minced meat and finished products were obtained by including 44 % of turkey MCPM and 10 % of hemp flour in the recipe of meat-containing bread. The results of the organoleptic analysis of the developed breads confirmed their high consumer value
Discutindo mitos e verdades sobre o autismo: contribuições de uma palestra para compreensão do transtorno do espectro autista
Authors: Lemos Shaw Gisele Soares , Leandro Leonésia , Rocha-Oliveira Rafaela
Published: August 2021

Este estudo trata da importância da sensibilização de profissionais da área de Saúde e Educação sobre o autismo. Apesar do aumento no número de diagnósticos do transtorno, ainda é identificado um alto nível de profissionais que desconsideram a heterogeneidade do espectro autista. Assim, buscou-se investigar a efetividade de uma palestra sobre o Transtorno do Espectro Autista, realizada no Hospital Zilda Arns, município de Curitiba, Paraná. Essa ação faz parte do projeto de extensão intitulado “Tríade família- escola-especialistas e o desenvolvimento da pessoa autista”, da Universidade do Vale do São Francisco, Campus Senhor do Bonfim, Bahia, que promove pesquisas e atividades de divulgação científica acerca do autismo. Como instrumento de coleta de dados foi utilizado um questionário (pré e pós-teste) com 34 participantes da palestra. Recorreu-se a uma abordagem qualitativa, com categorias pré-estabelecidas, analisando os dados obtidos através da análise de conteúdo. De modo geral, os resultados indicam uma visão positiva do envolvimento de profissionais de diversas áreas na atividade e de seus relatos sobre os impactos da mesma na modificação de suas percepções sobre autismo. Observou-se a ausência de contato da maioria dos profissionais com pessoas com autismo e a necessidade de ações para informar e discutir sobre essa temática.
Assessing thermal properties of enclosing structures of construction facilities by analysis of thermograms
Authors: Karpov D. F. , Pavlov M. V.
Published: July 2021

Objective. One of the most effective ways to assess thermal protection of construction facilities of various applications is thermal control. Methods. According to the national standard “Method for thermal imaging quality control of thermal insulation of enclosing structures” in force on the Russian Federation territory, the results of thermal imaging monitoring of capital and completed construction facilities are divided into qualitative and quantitative depending on set goals and objectives. Qualitative assessment involves computer processing and visual interpretation of thermograms using specialized software. Quantitative analysis of thermograms involves determining and numerically comparing parameters of reference areas and characteristics of defects detected in an object being under thermal control. Results. The paper describes particular characteristics and results of qualitative and quantitative analysis of thermograms (thermal images) obtained via thermography of fragments of external enclosing structures of a completed construction facility—an apartment building. The paper analyses existing methods of a quantitative assessment of thermograms described in regulatory documents and methodological recommendations, and presents specific examples of their application. Conclusion. Thermal imaging diagnostics makes it possible to qualitatively and quantitatively assess the level of thermal protection of the outer shell of an object under control by “decoding” thermograms and comparing calculated parameters with standard indicators.
Designing virtual team projects with accessibility in mind: an illustrative example of cross‐cultural student collaboration
Authors: Oswal Sushil K. , Palmer Zsuzsanna B. , Koris Rita
Published: August 2021

We report on the results of the second-year study of an interdisciplinary, international collaboration among students and instructors at one European and two US universities. The purpose of the study was to examine whether our changing four pedagogical elements from Year 1 to Year 2 affected the students’ perceptions of learning. The primary purpose of the pedagogical collaboration itself was to involve students in authentic collaborative learning activities intended to support them in developing an understanding of disability and accessibility concepts in a business context. Students in a business English course proposed start-up companies and created business plans for their ventures. Students in an introductory professional writing course designed websites for the planned businesses, while students in a gateway technical communication course served as advisors to the other two classes regarding how to make the proposed businesses and websites accessible to people with disabilities. We collected quantitative and qualitative data through pre- and post-project surveys. These data were supplemented with qualitative data from student interactions, student submissions (work products), video conference meeting minutes, and instructors’ notes. The analysis revealed that students reported increased awareness of disability and openness to finding solutions for accessibility issues.
Моделирование оптических концентраторов для модернизированной камеры черенковского гамма-телескопа TAIGA-IACT
Authors: Антонов А.С. , Богданов А.А. , Красильщиков А.М. , Холупенко Е.Е.
Published: August 2021

A quantitative simulation of a system of optical concentrators based on Winston's hexagonal cones, intended for the registration camera of the TAIGA-IACT Cherenkov gamma-ray telescope, has been performed. The data on the transmission of the cones are obtained; the distributions of the photon flux intensity in the plane of the detector are given. On the basis of the results obtained, an optimal configuration of optical concentrators is proposed, taking into account the design features of the mount, mirror and TAIGA-IACT camera, as well as the features of its new detector units.
Изменение характеристик полупроводниковых структур СВЧ-усилителей под воздействием импульсного лазерного излучения
Authors: Пашенцев В.Н.
Published: August 2021

The effect of pulsed laser radiation on the change in the parameters of semiconductor structures of field-effect transistors with a Schottky gate with an operating frequency range of 1.5–8 GHz and integrated amplifiers with an operating frequency range of 0.4–6 GHz is studied. Laser radiation with 25 ns pulse duration, incident on the transistor crystal, creates a pulsed photocurrent. It is shown that the amplitude of the pulsed photocurrent is three times higher than the operating transistor current. The current-voltage characteristics of the field-effect transistor were measured in the mode of pulsed laser radiation. The amplitude dependence of the pulsed photocurrent in semiconductor structures on the power of laser radiation for various wavelengths of 1.06 µm and 0.53 µm is studied. It is shown that as a result of the action of pulsed laser radiation on semiconductor structures, a short disappearance of the amplification of the high-frequency signal at the amplifier output occurs.
GaAs/AlGaAs- и InGaAs/AlGaAs-гетероструктуры для мощных полупроводниковых инфракрасных излучателей
Authors: Гуляев Д.В. , Дмитриев Д.В. , Фатеев Н.В. , Протасов Д.Ю. , Кожухов А.С. , Журавлев К.С.
Published: August 2021

Определен внутренний квантовый выход люминесценции GaAs/AlGaAs- и InGaAs/AlGaAs-гетероструктур для инфракрасных светодиодов. Исследовано влияние ростовых условий гетероструктур, выращенных методом молекулярно-лучевой эпитаксии и пост-ростового отжига на квантовый выход гетероструктур. Показано, что совокупной оптимизацией данных процессов удается повысить квантовый выход люминесценции исследуемых гетероструктур до 75-80% при умеренной мощности накачки. Ключевые слова: гетероструктуры, кельвиновская зондовая микроскопия, молекулярно-лучевая эпитаксия.
Исследование электрофизических свойств композиционных волокон на основе хитозана и полипиррола для тканевой инженерии
Authors: Алешин П.А. , Алешин А.Н. , Розова Е.Ю. , Дресвянина Е.Н. , Сапрыкина Н.Н. , Юдин В.Е.
Published: August 2021

Composite fibers based on chitosan, coated with a conducting polymer, polypyrrole (PPyr), have been obtained. Their morphology was studied by scanning electron microscopy. The electrical conductivity of the fibers in a dry state and in a liquid culture medium simulating tissue fluid has been estimated. The values of resistivity, ro, and conductivity, sigma , of the investigated fibers are determined depending on the number of PPyr layers, the degree of drawing (orientation) of the fibers in dry and in liquid media. It was found that with an increase in the amount of drawing from 0 to 100%, ro of fibers decreases both in a dry state and in a liquid culture medium. In this case, the maximum drop ro of fibers upon immersion in a liquid culture medium was observed for undrawn fibers with two layers of PPyr. It was shown that after an initial drop in ro of oriented chitosan fibers with 1 and 2 layers of PPyr ro changes weakly in a liquid culture medium for 2 hours. The investigated oriented polymer fibers of chitosan coated with 1 and 2 layers of PPyr are promising for use in the field of tissue engineering and regenerative medicine.
Asymmetrical cell division with exponential growth
Authors: Zaidi Ali , Van Brunt Bruce
Published: July 2021

An advanced pantograph-type partial differential equation, supplemented with initial and boundary conditions, arises in a model of asymmetric cell division. Methods for solving such problems are limited owing to functional (nonlocal) terms. The separation of variables entails an eigenvalue problem that involves a nonlocal ordinary differential equation. We discuss plausible eigenvalues that may yield nontrivial solutions to the problem for certain choices of growth and division rates of cells. We also consider the asymmetric division of cells with linear growth rate which corresponds to "exponential growth” and exponential rate of cell division, and show that the solution to the problem is a certain Dirichlet series. The distribution of the first moment of the biomass is shown to be unimodal.
doi:10.1017/S1446181121000109
Open-source Longitudinal Sleep Analysis From Accelerometer Data (DPSleep): Algorithm Development and Validation
Authors: Rahimi-Eichi Habiballah , Coombs III Garth , Vidal Bustamante Constanza M , Onnela Jukka-Pekka , Baker Justin T , Buckner Randy L
Published: August 2021

Background

Wearable devices are now widely available to collect continuous objective behavioral data from individuals and to measure sleep.

Objective

This study aims to introduce a pipeline to infer sleep onset, duration, and quality from raw accelerometer data and then quantify the relationships between derived sleep metrics and other variables of interest.

Methods

The pipeline released here for the deep phenotyping of sleep, as the DPSleep software package, uses a stepwise algorithm to detect missing data; within-individual, minute-based, spectral power percentiles of activity; and iterative, forward-and-backward–sliding windows to estimate the major Sleep Episode onset and offset. Software modules allow for manual quality control adjustment of the derived sleep features and correction for time zone changes. In this paper, we have illustrated the pipeline with data from participants studied for more than 200 days each.

Results

Actigraphy-based measures of sleep duration were associated with self-reported sleep quality ratings. Simultaneous measures of smartphone use and GPS location data support the validity of the sleep timing inferences and reveal how phone measures of sleep timing can differ from actigraphy data.

Conclusions

We discuss the use of DPSleep in relation to other available sleep estimation approaches and provide example use cases that include multi-dimensional, deep longitudinal phenotyping, extended measurement of dynamics associated with mental illness, and the possibility of combining wearable actigraphy and personal electronic device data (eg, smartphones and tablets) to measure individual differences across a wide range of behavioral variations in health and disease. A new open-source pipeline for deep phenotyping of sleep, DPSleep, analyzes raw accelerometer data from wearable devices and estimates sleep onset and offset while allowing for manual quality control adjustments.
Disparities in Outpatient and Telehealth Visits During the COVID-19 Pandemic in a Large Integrated Health Care Organization: Retrospective Cohort Study
Authors: Qian Lei , Sy Lina S , Hong Vennis , Glenn Sungching C , Ryan Denison S , Morrissette Kerresa , Jacobsen Steven J , Xu Stanley
Published: August 2021

Background

Dramatic decreases in outpatient visits and sudden increases in telehealth visits were observed during the COVID-19 pandemic, but it was unclear whether these changes differed by patient demographics and socioeconomic status.

Objective

This study aimed to assess the impact of the pandemic on in-person outpatient and telehealth visits (telephone and video) by demographic characteristics and household income in a diverse population.

Methods

We calculated weekly rates of outpatient and telehealth visits by age, sex, race/ethnicity, and neighborhood-level median household income among members of Kaiser Permanente Southern California (KPSC) from January 5, 2020, to October 31, 2020, and the corresponding period in 2019. We estimated the percentage change in visit rates during the early pandemic period (March 22 to April 25, 2020) and the late pandemic period (October 4 to October 31, 2020) from the prepandemic period (January 5 to March 7, 2020) in Poisson regression models for each subgroup while adjusting for seasonality using 2019 data. We examined if the changes in visit rates differed by subgroups statistically by comparing their 95% CIs.

Results

Among 4.56 million KPSC members enrolled in January 2020, 15.0% (n=682,947) were ≥65 years old, 51.5% (n=2,345,020) were female, 39.4% (n=1,795,994) were Hispanic, and 7.7% (n=350,721) lived in an area of median household income <US $40,000. Increases in telehealth visits during the pandemic varied across subgroups, while decreases in outpatient visits were similar, except by age. Among age groups, the ≥65 years population had the least increase in telehealth visits (236.6%, 95% CI 228.8%-244.5%), with 4.9 per one person-year during the early pandemic period versus 1.5 per one person-year during the prepandemic period. During the same periods, across racial/ethnic groups, Hispanic individuals had the largest increase in telehealth visits (295.5%, 95% CI 275.5%-316.5%). Across income levels, telehealth visits in the low-income group increased the most (313.5%, 95% CI 294.8%-333.1%). The rate of combined outpatient and telehealth visits in the Hispanic, non-Hispanic Black, and low-income groups returned to prepandemic levels by October 2020.

Conclusions

The Hispanic group and low-income group had the largest percentage increase in telehealth utilization in response to the COVID-19 pandemic. The use of virtual care potentially mitigated the impact of the pandemic on health care utilization in these vulnerable populations.
Effects of stocking density on performance of snubnose pompano juvenile (Trachinotus blochii) reared in recirculating system
Authors: Tran Ngoc Hai , Tran Nguyen Duy Khoa , Kotani Tomonari , Ly Van Khanh , Le Quoc Viet
Published: July 2021

This study aimed to determine appropriate densities for rearing pompano juvenile (Trachinotus blochii) in a recirculating system. Four treatments of stocking density were evaluated including 500, 1.000, 1.500, and 2.000 inds/m3 in triplicate. The experimental system for pompano rearing was designed with 120-L tanks connected to 1 settling tank, 1 filter tank, 1 stone filter tank (contained 250 L of filter volume for each tank). The system was fulfilled with marine water at 30 ‰ of salinity and aerated continuously. Pompano were initially stocked at 0.07 ± 0.03 g/fish of body weight and daily fed using commercial pellet contained 55% of crude protein. After 30 days of rearing, the fish stocked at 1.000 individuals/m3 showed the best results in growth rate (0.060 g/day of DWG and 10.97 %/day of SGR) and was significantly higher than the treatment stocked at 1,500 and 2,000 inds/m3 (p < 0.05), however, no significant difference was observed between  1,000 and 500 treatments (p > 0.05).
Incorporation of amine functional group on surface of hydroxyapatite prepared fromstriped catfish (Pagasianodon hypophthalmus) bone
Authors: Ho Quoc Phong , Yasuaki Takagi , Huynh Lien Huong , Nguyen Thanh Tuyen , Tran Minh Phu , Le Thi Minh Thuy , Cao Luu Ngoc Hanh
Published: July 2021

This study was conducted to incorporate amine functional groups on the surface of hydroxyapatite to enhance its potential application in biomedical materials. Hydroxyapatite particles (HA) were synthesized from striped catfish (Pagasianodon hypophthalmus) bone and surface modified by grafting with (3-aminopropyl)triethoxysilane (APTES). Important factors affected grafting efficiency such as concentration of APTES, water content, reaction temperature and reaction time were studied. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscopy (SEM) were used to confirm the grafting reaction on HA surfaces. Grafting efficiency was evaluated based on intensity of characteristic absorption peaks of APTES. The experimental results showed that amine functional groups were successfully introduced on HA surface at optimal condition of 0.2 M APTES, 0.75 wt.% water content, at 60°C and 12-hour reaction time.
Study on corporate culture of vietnamese enterprises: An approach of denison’s model
Authors: Chau Thi Le Duyen , Thach Keo Sa Rate , Nguyễn Quang Tường , Nguyen Thi Ngoc Hoa , Nguyen Pham Tuyet Anh
Published: July 2021

This study was conducted to identify the elements that constitute corporate culture, applying Denison’s organisational culture (DOC) model. The study uses the following data analysis methods: descriptive statistics methods were used to determine the enterprise culture's strengths and weaknesses and the DOC model to assess corporate culture. The results show that the corporate culture scale of the studied business is made up of 12 factors: empowerment, team orientation, capacity development, core values, agreement, coordination and integration, creating change, customer focus, organizational learning, strategic direction and intent, goals and objectives, and vision. The results show that the studied enterprises achieve consistency when building a long-term vision and mission, and stable objectives. According to the DOC model's calculation formula, core values, agreement, coordination and integration are also significantly promoted in the studied enterprises' corporate culture.
The effect of heating factors on the properties of heat-induced surimi gel under ohmic heating
Authors: Nguyen Van
Published: July 2021

Ohmic heating (OH) is a method that heat is generated within the food due to its electrical resistance, resulting in a relatively linear heating rate and uniform temperature distribution. Because surimi-based paste contains water and salts, the conductivity is sufficiently good for the ohmic effect. Gelation induced by OH greatly depends on heating conditions such as heating speed, heating time, or electrical conductivity. However, the detailed information obtained is quite limited. Therefore, in order to clarify how ohmic heating affects the physical properties of surimi gel under OH, gels from croaker surimi (SA grade) were obtained using different heating conditions (heating speed, heating time, or salt concentration - electrical conductivity). Furthermore, the gels heated by ohmic heating were compared with the gel obtained by conventional water-bath heating. The results showed that, at the same heating rates, higher salt concentration generated better surimi gels for croaker surimi. Gels cooked ohmically at a slow heating rate performed significantly better than those cooked at a fast heating rate or heated conventionally in a water bath. There was little discernible difference in protein pattern between gels heated by OH and conventional water bath heating at fast heating rates with two different salt concentrations. The results also indicated that holding time at target temperature showed no effect on the gel. These results suggested that the properties of heat-induced surimi gels by OH are affected by not only heating speed but also holding time at maximum temperature and salt content.
Кости животных из позднесарматских погребений курганной группы «Кермен Толга»
Authors:   Kalmyk Scientific Center of the RAS (8, Ilishkin St., 358000 Elista, Russian Federation), Dordzhieva Tsagana V. , Bembeeva Lyubov A.
Published: August 2021

Introduction. The article introduces results of studies of animal bones excavated by the archaeological expedition of Kalmyk Research Institute of History, Philology and Economics (with E. V. Tsutskin as leading scientist) from Late Sarmatian burials within the Kermen Tolga Mound Group in the Sarpa Lowlands in 1979. Goals. The paper provides detailed descriptions of the animal bone remains, identifies their species composition, enumerates and compares the samples. Results. The study shows all the investigated Late Sarmatian burials of the Kermen Tolga Mound Group contained bone remains of only one domesticated animal — sheep (Ovis aries). Conclusions. The analysis of bone materials described in the field summary report and stored at Kalmyk Scientific Center of the RAS reveals that seven of the ten female burials excavated were containing bones of the back right leg, while in four of the six male burials there were found bones of the back left leg. The conclusions are preliminary but there is a definite relationship between the gender of each single buried individual and the side of animal’s body used therein. This may indicate the earlier unnoticed element of Late Sarmatian funeral rites.
Особенности иконографии в калмыцкой вышивке: традиционные и современные практики
Authors:   Kalmyk Scientific Center of the RAS (8, Ilishkin St., Elista 358000, Russian Federation), Sharaeva Tatyana I.
Published: August 2021

Introduction. The Kalmyks are a Mongolic Buddhist people that arrived in the Volga region in the 17th century. The specific ethnic features of Buddhism professed by the Kalmyks took shape over centuries of Russian suzerainty and were determined by various historical factors, including prolonged remoteness from Buddhist centers, the total eradication of Buddhist monasteries and centuries-long ban on spiritual guidance experienced in the 20th century, and the official Buddhist restoration by the early 21st century. Goals. The work aims at identifying and comparing traditional and contemporary Buddhist thangka patterns as elements to mirror particular features of Kalmyk iconography, as essential objects of religious cult and cultural heritage at large. Results. The paper shows that in the pre-20th century period Kalmyks used different techniques for producing thangkas — painting, embroidery, and applique ones. In the late 18th century onwards, imports of religious attributes from Tibet and Mongolia were restricted, and the role of art workshops affiliated to local Buddhist temples increased. That resulted in further development of thangka painting schools and the shaping of somewhat ethnic style in depicting Buddhist deities characterized by certain differences from canonical images. The old thangkas from private and public collections have served a basis for the restoration of ethnic painting traditions integral to Kalmykia’s Buddhism proper. The contemporary practices of producing divine images are closely related to stages in the regional development of Buddhism from the late 20th century to the present, lay Buddhist experiences, women’s leisure-time activities, and ethnic entrepreneurship. The study concludes contemporary Kalmyk needlewomen are guided by traditional rules of religious craftsmanship.
«Are you Koreans?» — «No, we are Kalmyks!»: развитие танцев «K-pop cover dance» среди молодежи Калмыкии
Authors:   Kalmyk Scientific Center of the RAS (8, Ilishkin St., 358000 Elista, Russian Federation), Lidzhieva Altana M.
Published: August 2021

Introduction. The article deals with the k-pop cover dance direction as one of the movements globalizing the youth environment. Nowadays, the K-pop youth subculture has reached a significant number of teenage schoolchildren with its popularity. Currently, belonging to the K-pop subculture and its dance practices are becoming integral to creating new global identities for young people. Goals. The study aims to examine the richness of K-pop components through dance culture, especially popular among school-age teenagers. Materials. The work primarily analyzes the author’s field materials with the aid of the structural/functional method, that of included observation, as well as interviews (narrative, semi-structured) with respondents. Results and Conclusions. The paper concludes that Kalmyk K-pop fans form a bi-ethnic identity in which a combination of features of both — their own and other ethnic cultures — is equally manifested. At the same time, K-pop cover dance proves the most accessible way to get socialized and develop imagination (i.e., a leisure-time activity) in present-day youth culture.
Башкирские фамильные антропонимы от названий социальных титулов, званий и чинов: историко-этимологический анализ
Authors:   Institute of History, Language and Literature of the Ufa Federal Research Centre of the RAS (71, Oktyabrya Ave., Ufa 450054, Russian Federation), Suleimanova Rezida A.
Published: August 2021

Introduction. Exploration of family anthroponyms associated with names of social titles and ranks on the basis of factual materials is of special significance, especially when it comes to examine the former in several essential perspectives. Goals. The study primarily aims at considering family names derived from social titles and ranks in historical /etymological and lexical/semantic perspectives. Restoration of some ancient names that have got completely excluded from the historical anthroponymic system is possible through analysis of surnames recorded in historical documents. The article seeks to determine the actual methods of deriving surnames from social titles and ranks, as well as to establish correspondences between historical facts and transformed (at certain stages of social life) concepts that had been once used to denote such titles and ranks further manifested in anthroponyms. Materials and Methods. The work analyzes surnames derived from titles and ranks registered in the scientific two-volume edition ‘Documents and Materials on Bashkir History, 1836–1842: Formulary Lists of Civil Servants Attached to the Bashkir-Mishar Tatar Host, 1836–1842’. The study employs a number of linguistic methods, such as the descriptive, etymological, comparative, and statistical ones. Results. Thus, the historical and etymological analysis of surnames derived from the onyms хан ~ ҡан ‘khan ~ qan’, бәк ~ бик ‘beg ~ b(e)ik’, бей ‘bey’, батыр ‘ba(gha)tur’, алп, алып ‘alp’, шаҡман ‘shaqman’ makes it possible conclude as to the significance of titles and ranks in the formation of Bashkir anthroponymy. For example, the insight into the onym хан ~ ҡан serving an anthroponymic basis reveals that the institution of khanate had existed in Bashkir society since ancient times, long before the Golden Horde, which resulted in that ҡан (хан) — stemmed family onyms (as well as related phonetic versions of the lexeme) were widespread enough. The paper also shows that surnames containing the title lexeme бик were much more common than those derived from the form бек. Another finding is that quite a share of discovered Bashkir surnames were derived from ranks bestowed to war heroes (батыр, алп, шаҡман, алдар).
Entre la desigualdad y la oportunidad: seguimiento a los retos educativos para la docencia durante la pandemia en la UNAM
Authors: De Aguero Servín Mercedes , Benavides Lara Mario Alberto , Manzano Patiño Abigail , Sánchez Mendiola Melchor
Published: August 2021

Objetivo: identificar los perfiles de las y los profesores de la UNAM que se han configurado durante la pandemia por COVID-19 que derivó en el tránsito hacia la educación remota de emergencia.Diseño metodológico: se presenta el análisis factorial, de consistencia interna y por conglomerados de los principales ítems del segundo cuestionario en torno a los efectos de la pandemia en el trabajo de docentes de la de la Universidad Nacional Autónoma de México (UNAM).Resultados: se identificaron nueve factores que caracterizan el comportamiento de las respuestas de las y los profesores, los cuales se correlacionaron con el perfil de los docentes, destacan las diferencias que presentan los docentes menores de 40 años y aquellos que pertenecen al Sistema de Universidad Abierta y Educación a Distancia (SUAYED) como aquellos que están más adaptados al trabajo a distancia por medio de las tecnologías digitales.Limitaciones de la investigación: dado que este se trata de un estudio exploratorio y al contexto en el que se diseñó e implementó el cuestionario no fue posible garantizar la representatividad estadística de la muestra.Hallazgos: se logró caracterizar tres perfiles de docentes, mismo que contribuyen a entender las tensiones que la educación en tiempos de pandemia presenta debido a las desigualdades sociales que el COVID ha visibilizado como por las posibilidades que las tecnologías representan para la transformación de las prácticas docentes que contribuyan con la equidad y el derecho a la educación de las y los estudiantes universitarios.
La regulación del cannabis en México y su relación con el derecho laboral
Authors: Schievenini Stefanoni José Domingo , Salinas García Rolando Javier
Published: August 2021

Objetivo: identificar, documentar y analizar los espacios donde colindan e intersectan la Ley Federal para la Regulación del Cannabis y la Ley Federal del Trabajo, en México. Diseño metodológico: se utiliza el método cualitativo de carácter exploratorio: en primer lugar, se realiza un análisis genealógico de fuentes documentales (específicamente leyes y resoluciones emitidas por la Suprema Corte de Justicia de la Nación); en segundo lugar, se analiza evidencia científica y se describe un caso regulatorio análogo al mexicano (el uruguayo); para con ello, en tercer lugar, proyectar una política pública que prevea los puntos potencialmente problemáticos de la relación entre leyes laborales y la regulación del cannabis en México. Resultados: el nuevo estatus jurídico del cannabis en México denota un vacío legislativo y jurisdiccional sobre la necesidad de prohibir o permitir el uso de esta planta dentro de espacios laborales. Este vacío requiere ser subsanado, para así prever las complejidades técnicas que requiere la detección de la intoxicación —problemática o no— con cannabis dentro de dichos espacios de trabajo. Limitaciones de la investigación: la literatura sobre la relación entre el uso de marihuana y los espacios laborales en México es nula; el espacio de exploración es amplio y requiere de metodologías exploratorias. De igual forma, los criterios jurisdiccionales son escasos y existe un espacio hermenéutico importante.Hallazgos: la temática relativa a la relación entre leyes laborales y regulación del cannabis en México presenta elementos que evidencian futuras tensiones jurídicas, por lo cual se requieren esfuerzos académicos y científicos para subsanar un espacio delicado en términos de diseño e implementación de políticas públicas. En el caso relativo a la regulación del cannabis en México se trata de una legislación garantista (en lo que atañe a los derechos del consumidor), pero potencialmente peligrosa (para los derechos de terceros y para el orden social).
Driver Drowsiness Detection Using Convolutional Neural Networks
Authors: Pasha Md Gouse
Published: August 2021

Accidents are now increasingly increasing as more cases are caused by driver drowsiness. To reduce these situations we were working on something that could reduce numbers and get accidents early. Seeing a drowsy driver behind the steering wheel once and warning him could reduce road accidents. In this case drowsiness is detected using an automatic camera, where, based on the captured image, the neural network detects whether the driver is awake or tired. Convolutional Neural Network Technology (CNN) has been used as part of a neural network, where each framework is examined separately and the average of the last 20 frames are tested, corresponding for about one second to a set of training and test data. We analyse image segmentation methods, construct a model based on convolutional neural networks. Using a detailed database of more than 2000 image fragments we are training and analysing the segmentation network to extract the emotional state of the driver in images.