bluuebunny/crossref_metadata_2025 huggingface dataset:
Cosmological Solutions for the Geometrical Scalar-Tensor with the Potential Determined by the Noether Symmetry Approach
Authors: Barreto Adriano B. , Kremer Gilberto M.
Published: July 2020

The aim of this work is to study a scalar-tensor theory where owing to Palatini’s variational method the space-time is endowed with a geometrical structure of Weyl integrable type. The geometrical nature of the scalar field is related to the non-metricity so that the theory is known as geometrical scalar-tensor. On the framework of Weyl transformations, a non-minimally coupled scalar-tensor theory on the Jordan frame corresponds to a minimally coupled Einstein–Hilbert action on the Einstein frame. The scalar potential is selected by the Noether symmetry approach in order to obtain conserved quantities for the FRW cosmological model. Exact solutions are obtained and analyzed in the context of the cosmological scenarios consistent with an expanding universe. A particular case is matched in each frame and the role of scalar field as a dark energy component is discussed.
Dynamic Topology Reconstruction Protocol for UAV Swarm Networking
Authors: Park Minsoo , Lee SeungGwan , Lee Sungwon
Published: July 2020

Along with the fourth industrial revolution, the use of unmanned aerial vehicles (UAV) has grown very rapidly over the past decade. With this rapid growth, studies using UAVs are underway in various areas. UAVs are more economical and effective when utilizing several nodes rather than operating a single aircraft. In general, UAVs collect and transmit information to the control center (CC), and act on control commands from the CC. Communication between UAVs and the control center is usually achieved using modules such as radio frequency (RF), Bluetooth, Wireless Fidelity (Wi-Fi) and cellular. However, when multiple UAVs communicate directly with the CC, the limitations of communication technologies and problems with increasing nodes occur. To address these points, several studies have constructed an ad-hoc network of UAVs to address the limitations of Wi-Fi and Bluetooth communication range, or the high cost of cellular systems. However, previous studies have constructed fixed topology ad-hoc networks. These studies did not take into account the problem of changing network topology due to the rapid mobility and frequent formation changes of UAVs. Due to this, limits occurred such that UAVs moved only in the pre-built topology. In this paper, we propose a dynamic topology construction protocol for UAV swarms to address this problem. The main contents of this paper are as follows. We first look at the research and limitations of existing UAV communications, and propose a protocol to solve this problem. This paper proposes a protocol for UAV construction of ad-hoc networks when trying to perform missions using multiple UAVs, and also describes how the changed network topology is reconstructed when network topology changes due to changes in flight formation. Finally, we establish a situation and apply the proposed protocol, analyze the results and describe further required research.
Unitarization Technics in Hadron Physics with Historical Remarks
Authors: Oller José
Published: July 2020

We review a series of unitarization techniques that have been used during the last decades, many of them in connection with the advent and development of current algebra and later of Chiral Perturbation Theory. Several methods are discussed like the generalized effective-range expansion, K-matrix approach, Inverse Amplitude Method, Padé approximants and the N / D method. More details are given for the latter though. We also consider how to implement them in order to correct by final-state interactions. In connection with this some other methods are also introduced like the expansion of the inverse of the form factor, the Omnés solution, generalization to coupled channels and the Khuri-Treiman formalism, among others.
Structural and Functional Insights into the C-terminal Fragment of Insecticidal Vip3A Toxin of Bacillus thuringiensis
Authors: Jiang Kun , Zhang Yan , Chen Zhe , Wu Dalei , Cai Jun , Gao Xiang
Published: July 2020

The vegetative insecticidal proteins (Vips) secreted by Bacillus thuringiensis are regarded as the new generation of insecticidal toxins because they have different insecticidal properties compared with commonly applied insecticidal crystal proteins (Cry toxins). Vip3A toxin, representing the vast majority of Vips, has been used commercially in transgenic crops and bio-insecticides. However, the lack of both structural information on Vip3A and a clear understanding of its insecticidal mechanism at the molecular level limits its further development and broader application. Here we present the first crystal structure of the C-terminal fragment of Vip3A toxin (Vip3Aa11200–789). Since all members of this insecticidal protein family are highly conserved, the structure of Vip3A provides unique insight into the general domain architecture and protein fold of the Vip3A family of insecticidal toxins. Our structural analysis reveals a four-domain organization, featuring a potential membrane insertion region, a receptor binding domain, and two potential glycan binding domains of Vip3A. In addition, cytotoxicity assays and insect bioassays show that the purified C-terminal fragment of Vip3Aa toxin alone have no insecticidal activity. Taken together, these findings provide insights into the mode of action of the Vip3A family of insecticidal toxins and will boost the development of Vip3A into more efficient bio-insecticides.
Catching Common Cold Virus with a Net: Pyridostatin Forms Filaments in Tris Buffer That Trap Viruses—A Novel Antiviral Strategy?
Authors: Real-Hohn Antonio , Zhu Rong , Ganjian Haleh , Ibrahim Nahla , Hinterdorfer Peter , Kowalski Heinrich , Blaas Dieter
Published: July 2020

The neutrophil extracellular trap (ET) is a eukaryotic host defense machinery that operates by capturing and concentrating pathogens in a filamentous network manufactured by neutrophils and made of DNA, histones, and many other components. Respiratory virus-induced ETs are involved in tissue damage and impairment of the alveolar–capillary barrier, but they also aid in fending off infection. We found that the small organic compound pyridostatin (PDS) forms somewhat similar fibrillary structures in Tris buffer in a concentration-dependent manner. Common cold viruses promote this process and become entrapped in the network, decreasing their infectivity by about 70% in tissue culture. We propose studying this novel mechanism of virus inhibition for its utility in preventing viral infection.
Characteristics of Adverse Events Following Immunization Reporting in Children: The Japanese Adverse Drug Event Report Database
Authors: Noda Aoi , Sakai Takamasa , Tsuchiya Masami , Oyanagi Gen , Obara Taku , Mano Nariyasu
Published: July 2020

The present study aimed to describe the trends and characteristics of adverse events following immunization (AEFI) reporting for children in the Japanese Adverse Drug Event Report database (JADER). We used 6280 AEFI reports for children aged <19 years among 504,407 ADR reports included in the JADER from 2004 to 2017. The number of AEFI reports gradually increased among children aged <10 years and was the highest in 2011 among children aged 10–19 years. The number of suspected vaccines per AEFI report increased after 2011 among children aged <10 years. The percentage of “death” and “did not recover” as AEFI outcomes reported were 4.3% and 3.7% among children aged <10 years and 0.2% and 21.1% among children aged 10–19 years, respectively. The most frequently reported vaccine–reaction pair was Haemophilus influenzae type b conjugate vaccine and pyrexia among children aged <10 years and recombinant adsorbed bivalent human papillomavirus-like particle vaccine and a loss of consciousness among children aged 10–19 years. It is necessary to consider the Weber effects to understand the trend and characteristics of AEFI reporting because pharmacovigilance activity regarding vaccination is not sufficient in Japan.
Porcine Parvovirus 7: Evolutionary Dynamics and Identification of Epitopes toward Vaccine Design
Authors: Wang Dongliang , Mai Jinhui , Yang Yi , Wang Naidong
Published: July 2020

Porcine parvovirus 7 (PPV7) belonging to the genus Chapparvovirus in the family Parvoviridae, has been identified in the USA, Sweden, Poland, China, South Korea and Brazil. Our objective was to determine the phylogeny, estimate the time of origin and evolutionary dynamics of PPV7, and use computer-based immune-informatics to assess potential epitopes of its Cap, the main antigenic viral protein, for vaccines or serology. Regarding evolutionary dynamics, PPV7 had 2 major clades, both of which possibly had a common ancestor in 2004. Furthermore, PPV7 strains from China were the most likely ancestral strains. The nucleotide substitution rates of NS1 and Cap genes were 8.01 × 10−4 and 2.19 × 10−3 per site per year, respectively, which were higher than those reported for PPV1-4. The antigenic profiles of PPV7 Cap were revealed and there were indications that PPV7 used antigenic shift to escape from the host’s immune surveillance. Linear B cell epitopes and CD8 T cell epitopes of Cap with good antigenic potential were identified in silico; these conserved B cell epitopes may be candidates for the PPV7 vaccine or for the development of serological diagnostic methods.
Silicone Wristbands as Passive Samplers in Honey Bee Hives
Authors: Bullock Emma J. , Schafsnitz Alexis M. , Wang Chloe H. , Broadrup Robert L. , Macherone Anthony , Mayack Christopher , White Helen K.
Published: July 2020

The recent decline of European honey bees (Apis mellifera) has prompted a surge in research into their chemical environment, including chemicals produced by bees, as well as chemicals produced by plants and derived from human activity that bees also interact with. This study sought to develop a novel approach to passively sampling honey bee hives using silicone wristbands. Wristbands placed in hives for 24 h captured various compounds, including long-chain hydrocarbons, fatty acids, fatty alcohols, sugars, and sterols with wide ranging octanol–water partition coefficients (Kow) that varied by up to 19 orders of magnitude. Most of the compounds identified from the wristbands are known to be produced by bees or plants. This study indicates that silicone wristbands provide a simple, affordable, and passive method for sampling the chemical environment of honey bees.
Flood Vulnerability Assessment for Prioritizing and Evaluating Rehabilitation of Ungauged Reservoirs Considering Climate Change
Authors: Jun Sang-Min , Kang Moon-Seong , Hwang Soonho , Park Jihoon , Song Jung-Hun
Published: July 2020

The objective of this research was to apply the flood vulnerability assessment to ungauged reservoirs for prioritizing and evaluating the reservoir rehabilitation according to climate change. The flood vulnerability index (FVI) can quantitatively compare the flood vulnerabilities of the analysis targets and can be used for the relative comparison of hydraulic structures to determine the reinforcement priority. In this study, we proposed a simple FVI that contained exposure and adaptive capacity of the hydraulic structure. We selected ten dam heightening reservoirs in Korea and constructed data for flood vulnerability assessment. The FVI was calculated before and after the dam heightening to analyze the priority and effect of reservoir rehabilitation under climate change. Flood vulnerability indices were estimated for four periods (1995s: 1981–2010, 2025s: 2011–2040, 2055s: 2041–2070, 2085s: 2071–2100) and before/after the dam heightening project. As a result, flood vulnerability indices decreased after the dam heightening project for all reservoirs, and the indices have increasing tendencies in the future. The indices developed in this study can be useful to determine the priority and to evaluate the effect of rehabilitation for hydraulic structures.
Hydrologic Assessment of TRMM and GPM-Based Precipitation Products in Transboundary River Catchment (Chenab River, Pakistan)
Authors: Ahmed Ehtesham , Al Janabi Firas , Zhang Jin , Yang Wenyu , Saddique Naeem , Krebs Peter
Published: July 2020

Water resources planning and management depend on the quality of climatic data, particularly rainfall data, for reliable hydrological modeling. This can be very problematic in transboundary rivers with limited disclosing of data among the riparian countries. Satellite precipitation products are recognized as a promising source to substitute the ground-based observations in these conditions. This research aims to assess the feasibility of using a satellite-based precipitation product for better hydrological modeling in an ungauged and riparian river in Pakistan, i.e., the Chenab River. A semidistributed hydrological model of The soil and water assessment tool (SWAT) was set up and two renowned satellite precipitation products, i.e., global precipitation mission (GPM) IMERG-F v6 and tropical rainfall measuring mission (TRMM) 3B42 v7, were selected to assess the runoff pattern in Chenab River. The calibration was done from 2001–2006 with two years of a warmup period. The validation (2007–2010) results exhibit higher correlation between observed and simulated discharges at monthly timescale simulations, IMERG-F (R2 = 0.89, NSE = 0.82), 3B42 (R2 = 0.85, NSE = 0.72), rather than daily timescale simulations, IMERG-F (R2 = 0.66, NSE = 0.61), 3B42 (R2 = 0.64, NSE = 0.54). Moreover, the comparison between IMERG-F and 3B42, shows that IMERG-F is superior to 3B42 by indicating higher R2, NSE and lower percent bias (PBIAS) at both monthly and daily timescale. The results are strengthened by Taylor diagram statistics, which represent a higher correlation (R) and less RMS error between observed and simulated values for IMERG-F. IMERG-F has great potential utility in the Chenab River catchment as it outperformed the 3B42 precipitation in this study. However, its poor skill of capturing peaks at daily timescale remains, leaving a room for IMERG-F to improve its algorithm in the upcoming release.
Ecological Environment Evaluation of Forest Ecosystem Nature Reserves Using an Unweighted Cloud Model
Authors: Xiang Mengshi , Lin Xiaonan , Yang Xiyan , Zhang Shanghong
Published: July 2020

The ecological environment is the foundation of human survival and development, and forest ecosystem nature reserves play an important role in the protection of the ecological environment. The evaluation of forest ecosystem nature reserves facilitates the formulation of relevant management policies. At present, the evaluation of the ecological environment of forest ecosystem nature reserves is mainly based on detailed evaluation of some elements of the ecological environment, rather than on a comprehensive quantitative evaluation that reflects the ecological environment in many aspects. To address this shortcoming, the quantitative evaluation indicator system of comprehensive ecological environment for forest ecosystem nature reserves was established based on the water, air, soil, and biological environments, according to the consensus on ecological environment in the past research and characteristics of the research area. The weight is still a necessary and important link in the evaluation of forest ecosystem nature reserves, but the accuracy of the weight results is difficult to get a scientific judgment. To prevent the evaluation results being influenced by weighting uncertainty, an unweighted cloud model was constructed to provide an evaluation mechanism without weight. The ecological environment evaluation was then carried out using the unweighted cloud model, taking Songshan Nature Reserve as a research area. The results show that the grades of the ecological environment of Songshan Nature Reserve are 21% excellent, 67% good, and 12% qualified, and that the state of the ecological environment is stable and performing well. The evaluation results for the grades of the environmental dimension layers are water environment > soil environment > biological environment > air environment. The study’s research results can provide theoretical support for the evaluation of forest ecosystem nature reserves, and for evaluation work in general when weights are difficult to determine or uncertain.
Effects of Travel Speed and Collector on Evaluation of the Water Application Uniformity of a Center Pivot Irrigation System
Authors: Li Yongchong , Hui Xin , Yan Haijun , Chen Diyi
Published: July 2020

Water application uniformity is an important performance parameter when designing and operating an irrigation system. Performance tests of a center pivot irrigation system equipped with fixed and rotated spray plate sprinklers (FSPS and RSPS, respectively) were conducted at five travel speeds. The effects of travel speed, collector size, and setting height on water application uniformity were evaluated using Heermann and Hein’s coefficient of uniformity (CUH). The CUH was 12.7% higher for the RSPS than the FSPS and decreased as the travel speed increased. Collector size and setting height affected CUH, and CUH was higher when the collector had a large opening cross-section compared to the collector with a small opening cross-section. CUH was higher when the collector with a low setting height compared to when it a high setting height for the FSPS. However, collector setting height had no effect on CUH for the RSPS. The weighted average water application depth (Dw) decreased as the travel speed increased. Collector size had no significant effect on Dw, but Dw with a low collector setting height was larger than the values with a high collector setting height. The water application rate increased as distance from the pivot point increased and was higher for the FSPS than the RSPS. The results will improve the selection of travel speed and collector when the water application uniformity of a center pivot irrigation system is evaluated.
Estimation of Surface Water Runoff for a Semi-Arid Area Using RS and GIS-Based SCS-CN Method
Authors: Al-Ghobari Hussein , Dewidar Ahmed , Alataway Abed
Published: July 2020

The proper planning of storage structures, waterways, irrigation schemes, water harvesting, erosion control structures, and groundwater development strategies requires accurate estimation of surface runoff. However, hydrologists in Saudi Arabia face serious challenges, specifically due to the rare availability of surface runoff data. In this study, the soil conservation service-curve number (SCS-CN) method integrated with geographic information system (GIS) and remote sensing (RS) was utilized to estimate the surface runoff in Wadi-Uranah basin, in the western region of Saudi Arabia. Different thematic maps such as slope, hydrologic soil group (HSG), land use/land cover (LULC), and daily rainfall have been created in GIS environment and processed to generate the curve number (CN) and surface runoff maps. Based on the soil classification results, the study area was categorized into two HSGs (B and C). The dominant HSG was group C, representing about 98.8% of the total area. The LULC analysis showed four main land use types in the study region: urban, rocks, barren soil, and agricultural areas. Furthermore, the finding results showed that CN values for the normal conditions (CNII) ranged between 74 and 93 in agricultural and both urban and rock areas, respectively. The CNII values were further corrected using slope data to derive slope-adjusted CNII. Moreover, the rainfall-runoff results showed an increase in the daily runoff of the study region with a minimum of 15 mm to a maximum of 74 mm. Another interesting result was rainfall-runoff linear regression analysis that showed a good correlation of 0.98. Additionally, the peak runoff hydrograph flows for 10-, 50-, and 100-year return periods obtained from the SCS-based dimensionless unit hydrograph were 828, 1353, and 1603 m3/s, respectively. Therefore, this study highlights that the SCS-CN method integrated with RS and GIS deserves further attention for estimating runoff of ungauged basins for better basins management and conservation purposes.
Penerapanan Metode Beyond Centers And Circle Time (Bcct) Pada Pendidikan Anak Usia Dini (Paud)
Authors: Robecca Julian , Sofiani Ratna Imanira , Hasti Novrini
Published: July 2020

ABSTRACT

The golden age  for a child is the age when he is 0 to 5 years old. At this age the child's physical development and brain growth optimally. Children's brain development related to intelligence requires stimulation from the surrounding environment. If stimulation from the environment is lacking, the child's intellectual development is also not optimal. To increase stimulation from an early age many Early Childhood Education (PAUD) have emerged, which is a form of educational institution which is an artificial environment that is consciously designed and planned to develop children's intelligence potential. From 2013 data, the Directorate General of Early Childhood, Non-Formal and Informal Education (PAUDNI) Bandung has 1,323 PAUD. From all of these methods there is one concept that is the benchmark in the PAUD program, namely that education must be fun and in accordance with the child's development. The BCCT method develops from the Montessori, High Scope and Region Emilio methods. The purpose of community service activities is to create teachers who can apply BCCT learning methods to students, assist teachers in the delivery of learning materials that are appropriate to the child's development, help children in the reception and absorption of learning materials, create a pleasant atmosphere in the learning process for both partners .

Key words: Early Childhood Education, Beyond Centers and Circle Time (BCCT), golden age,

 

ABSTRAK

Golden age bagi seorang anak adalah usia ketika dia berusia 0 hingga 5 tahun. Pada usia ini perkembangan fisik dan otak anak tumbuh secara optimal. Perkembangan otak anak yang berkaitan dengan kecerdasan membutuhkan stimulasi dari lingkungan sekitarnya. Jika stimulasi dari lingkungan kurang, perkembangan intelektual anak juga tidak optimal. Untuk meningkatkan stimulasi sejak usia dini banyak bermunculan Pendidikan Anak Usia Dini (PAUD), yaitu suatu bentuk lembaga pendidikan yang merupakan lingkungan buatan yang secara sadar dirancang dan direncanakan untuk mengembangkan potensi kecerdasan anak. Dari data tahun 2013, Direktorat Jenderal Pendidikan Anak Usia Dini, Nonformal dan Informal (PAUDNI) Bandung ada 1.323 PAUD. Dari semua metode ini ada satu konsep yang menjadi tolok ukur dalam program PAUD, yaitu bahwa pendidikan harus menyenangkan dan sesuai dengan perkembangan anak. Metode BCCT mengembang dari metode Montessori, High Scope dan Regio Emilio. Tujuan kegiatan pengabdian masyarakat adalah, menciptakan guru yang dapat menerapkan metode pembelajaran BCCT pada siswa, membantu guru dalam penyampaian materi pembelajaran yang sesuai dengan perkembangan anak, membantu anak-anak dalam penerimaan dan penyerapan bahan belajar, menciptakan suasana yang menyenangkan di proses pembelajaran pada kedua pasangan.

 

Kata kunci: Beyond Center Circle Time (BCCT),  golden age, Pendidikan Anak Usia Dini (PAUD),
Hubungan Motivasi Mahasiswa Pada Praktek Laboratorium Asuhan Kegawatdaruratan Maternal dan Neonatal (KGD) dengan Hasil Belajar Asuhan Kegawatdaruratan Maternal dan Neonatal (KGD) Pada Mahasiswa Semester IV Di Akademi Kebidanan Ibt.isam Aulia Kisaran Tahu
Authors: Sinaga Eliza Bestari
Published: July 2020

Abstract

            learnig outcomes are to find out the extent to with students have been able to learn from certain subjects by conducting evaluations ,competencies in the form knowledge ,skill,and attitude periodically in the form of midterm formative, semester. the study aims to determaine the relationship of students motivation in laboratory practices with learning outcomes of maternal and neonatal emergency care ( KGD ) in semester IV students .this type of research is a descriptive analytic study using cross sectional design . the population was fourth semester students of ibtisam aulia midwifery kisaran 2018/2019 school year which consisted of 1 class totaling 25 peoples.the sample in this study is the total population data analysis was univariate ,analysis and bivariete analysis with chi square test. the results showed that there was a significant relationship between motivation in KGD laboratory practices and KGD care learning outcomes .its recommended to increase guidance on improving maternal and neonatal emergency care learning outcomes ( KGD )
Pengaruh Penyuluhan Kesehatan Tentang Hipertensi Kehamilan Terhadap Pengetahuan Ibu Dalam Memelihara Tekanan Darah di Desa Padang Pulau Kabupaten Asahan
Authors: Budiyanthy Donna
Published: July 2020

ABSTRACT

 

Mother's knowledge about the problem of hypertension in pregnancy is still relatively low. Lack of knowledge about hypertension in pregnancy reflects a lack of knowledge about the risks associated with their fetus and how to avoid them. Based on preliminary studies carried out in the  Padang pulau village Kabupaten Asahan regency  that has been conducted by researchers note that in 2013 there were 48 pregnant women whose blood pressure> 140 mmHg. In the January to April  2018 there were 35 pregnant women. This study aims to determine the relationship of health education on hypertension in pregnancy with the mother's knowledge in maintaining blood pressure in Padang pulau village Kabupaten Asahan regency This type of research was analytic observational with cross sectional design. The population in this research was all pregnant women and a sample of 35 people, engineering samples of the total sampling, methods of collecting data by interviewing indirectly by used a questionnaire, data analysis using Chi-Square test. Based on the results of the analysis showed that pvalue (0.004) <α (= 0.05), which shall mean the hypothesis was accepted that there was a relationship of health education on hypertension in pregnancy with the mother's knowledge in maintaining blood pressure. For it was expected that health workers in order to carry out health education as one of health promotion actions in order to prevent hypertension in pregnancy and can improve maternal and child health.
HUBUNGAN PENGETAHUAN PASIEN GAGAL GINJAL KRONIK YANG MENJALANI TERAPI HEMODIALISISTERHADAP KEPATUHAN DIETDI RSI MALAHAYATI
Authors: Basri Basri
Published: July 2020

Knowledge and compliance are the key to health in patients with chronic renal failure undergoing hemodialysis therapy, a diet that is consumed in excess or less will cause side effects in patients, while patients with chronic renal failure often experience deficits in nutritional intake. The purpose of this study was to determine the relationship between the level of knowledge and level of dietary compliance in patients with chronic renal failure undergoing hemodialysis therapy in an Islamic hospital instead of terrain. The method used was an observational analytic population of all patients with chronic renal failure, all patients with chronic renal failure undergoing hemodialysis therapy at an Islamic hospital actually had a field of 33 patients using a total sample. Data collection used questionnaires, independent variables of knowledge and dependent variables on diet compliance. Data were analyzed with significance α = 0.05. The results of the study showed that most (72.7%) respondents had good knowledge and almost all respondents (93.9%) were obedient in dieting. The results of the analysis obtained are ρ = 0.011, ρ> 0.005 meaning that there is no significant relationship between knowledge and dietary compliance. Knowledge greatly affects adherence to a person's diet, there are other things that affect such as patient experience, social, economic conditions, patient psychological factors, and family support for patients. For patients with chronic kidney failure who undergo hemodialysis therapy should maintain their knowledge and also be able to advise patients who have recently undergone hemodialysis therapy from their past experience and for colleagues to always give enthusiasm and motivation to patients and provide support for knowledge and information.
Sustainability, Effectiveness and Efficienc of Enterprises in High-Tech Sectors in Crisis Conditions: Econometric Modelling
Authors: Spitsin V. V. , Spitsina L. Yu.
Published: July 2020

The aim of this work is to model the impact of sustainability and effectiveness on the efficiency of enterprises. The object of the research is the enterprises of high-tech industries and services of Russia. Their efficiency (profitability) is analyzed in the conditions of the crisis period of 2013–2017. The sample includes 1814 enterprises or 9070 observations (1814 enterprises × 5 years). Research methods: regression analysis of panel data, models with random effects. The dependent variable is the net return on assets. Results: we found that effectiveness and sustainability have a highly significant positive impact on the efficiency (profitability) of enterprises in high-tech sectors of Russia in a crisis. Further research revealed a parabolic relationship (inverted U shape) between the share of borrowed capital in the balance sheet and profitability, as well as between the size of the enterprise and profitability. It is shown that enterprises with high stability of revenue dynamics can achieve higher profitability with effective management of the capital structure. Moreover, capital structure management strategies will be different depending on the stability of revenue dynamics. The maximum profitability values are shown by medium-sized enterprises. High revenue stability provides a slower decrease in profitability for large and small enterprises. The obtained patterns can be used by enterprises of high-tech sectors to increase the efficiency of their activities in the conditions of economic instability.
Classification Approac to Management of Polythematic Knowledge
Authors: Cherepova Yu. V. , Bobrov L. K. , Utepbergenov I. T.
Published: July 2020

This paper gives a brief description of the being created system of information support for innovation activities in the Republic of Kazakhstan, which is built as an information portal, that provides navigation in the national and global information space through the provision of metadata about information resources, relevant to the user’s task. The corporate knowledge management system is considered as a component of the information infrastructure for supporting innovation. An approach to the management of polythematic knowledge is proposed, envisaging the representation of knowledge, based on the use of classification type languages. In this case, a thematic rubricator is introduced into the ontology model instead of a thesaurus, where each category (rubric) has its own code, name and set of keywords, characterizing its thematic content. The proposed joint use of thematic rubrics of Russian State rubricator of scientific-engineering information and All-Russian institute of scientific and engineering information allows increase the degree of accuracy of the knowledge presentation, as well as take advantage of establishing the associative relations between different classification systems. Along with this, there is maintained the possibility of a verbal knowledge description in terms of keywords, characterizing the content of subject entries and words from the rubrics titles.
REGULAR BUILDING AS AN IMPORTANT ELEMENT OF THE HISTORICAL URBAN ENVIRONMENT (ON THE EXAMPLE OF SAINT PETERSBURG)
Authors: Pasechnik I. , Marushina N.
Published: July 2020

In the context of an ever-increasing level of urbanization, the historical urban environment is one of the most studied phenomena in modern theory and practice of heritage conservation. The change in the paradigm of heritage that has taken place over the past decades and the recognition of man as one of the most important components of the heritage protection system contribute to the development of the legal apparatus and of new approaches to preserving cities. The article traces the relationship between the transformation of ideas about the value of an urbanized territory as an object of heritage and the evolution of its protection tools, reveals the role of various elements in maintaining the integrity of urban fabric based on analysis of international and Russian regulatory documents. The regular building is recognized as an element, which allows maintaining cultural identity and at the same time developing valuable characteristics of the historical environment, ensuring the invariability of the perceived image of the city. The historic centre of St. Petersburg, which has an internationally recognized architectural, urban and intangible (associative, memorial) values and is therefore inscribed on the UNESCO World Heritage List, is characterized by exceptional integrity and authenticity of the historical urban environment. These qualities require special and based on the principles of sustainability approaches to the development of the territory, which will ensure the maintenance of the integrity of the urban environment as an element of human environment.
Channels and “lifts” of social mobility of modern young townsfolk
Authors: Skok Natalia , Akvazba Ekaterina , Koltunova Yulya , Zinenkova Arina
Published: July 2020

The article analyses the recent data on social mobility problem in Russian post-Soviet young people. Based on sociological research in the form of the poll of young people aged 15-28, living in the Russian province – the towns in the south of Tyumen region (N=1200), - the dominant channels of young people’s mobility were found out, as well as the motivation and setting on mobility in different categories of young people. The value of the research results consists in deep understanding of the person and groups’ social mobility problems, on the whole, and young people, in particular, in post-Soviet Russia.
Public Administration as a Form of Realization of Public Authority
Authors: Shatrava Serhii , Tsybulnyk Nelli Yuriivna , Bezpalova Olha Ihorivna , Muzychuk Oleksandr Mykolaiovych
Published: July 2020

The purpose of the article is to determine the content and features of public administration as one of the forms of realization of public authority. The subject of the research is social relations that arise, develop and terminate during public administration as one of the forms of realization of public authority.
The following methods of scientific cognition were used during the writing of the article: dialectical, formal-legal and analytical.
The article is devoted to the definition and analysis of the features of public administration as a form of realization of public authority. The level of impact of effective administration by spheres of public life on quality of functioning of the country as a whole is established during the research. The analysis of historical stages of development of the field of public administration is carried out. A well-known thesis in the scientific community that public administration should be defined as an integral part of both political science and management (management science) is analyzed in great detail. The importance to study the key issues related to public administration was emphasized. A comparative analysis of existing systems of public administration as a basis for the functioning of state power and local self-government is carried out. According to the results of the research, the important factors that impact the effectiveness of public administration are identified in the conclusions. The need to take into account the European experience of public administration and administration of State authority was also emphasized.
Self-efficacy Sources among General Education Teachers in Inclusive Schools: A Cross-Cultural Study
Authors: Soliman Mohammad S.
Published: July 2020

The inclusion of students with special needs in general education classes has become a goal that all educational systems worldwide strive to achieve it. The inclusion of special needs has many benefits, whether for special needs students or regular students. The current study aims to reveal the differences in the self-efficacy among general education teachers in both the Kingdom of Saudi Arabia and the Arab Republic of Egypt. It aims also to reveal the sources of this self-efficacy in both countries. The core study sample consisted of (96) Saudi teachers and (88) Egyptian teachers. The researcher used the teachers 'self-efficacy scale and the teachers' self-efficacy sources scale. The results of the study indicated that there is a significant difference between the average scores of the total self-efficacy and its sub-dimensions between the Saudi and Egyptian sample for the outperform of The Egyptian teachers. It indicated that the source of the mastery experience was a significant predictive of the self-efficacy of the Saudi teachers, and it explained 53% of the variation in self-efficacy. It also indicated that the mastery experience was a significant predictive of the self-efficacy of the Egyptian teachers, and it explained 13% of the variance in self-efficacy.
Real estimates of mortality following COVID-19 infection; an oversimplification of a complex issue
Authors: Hamidian Jahromi Alireza , Mahmoudi Hilda
Published: July 2020

Some authors have claimed that the mortality rate estimations for coronavirus disease 2019 (COVID-19) which are based on the number of deaths relative to the number of confirmed cases of infection are not representative of the actual death rate. As a matter of fact, the current mortality rate estimates (specially for calculations performed during the exponential phase of the virus spread) are an underestimation of the potential mortality of the symptomatic COVID-19 patients. Here we discuss some pitfalls of Baud and colleague’s innovative suggestion to re-estimate the COVID-19 mortality rate by dividing the number of deaths on a given time by the number of confirmed symptomatic COVID-19 patients at an earlier time (time from onset of symptom to death).
Assessment of Genetic Aspects of Non-alcoholic Fatty Liver and Premature Cardiovascular Events
Authors: Saki Sara , Saki Nader , Poustchi Hossein , Malekzadeh Reza
Published: July 2020

Recent evidence has demonstrated a strong interplay and multifaceted relationship between non-alcoholic fatty liver disease (NAFLD) and cardiovascular disease (CVD). CVD is the major cause of death in patients with NAFLD. NAFLD also has strong associations with diabetes and metabolic syndrome. In this comprehensive review, we aimed to overview the primary environmental and genetic risk factors of NAFLD, and CVD and also focus on the genetic aspects of these two disorders. NAFLD and CVD are both heterogeneous diseases with common genetic and molecular pathways. We have searched for the latest published articles regarding this matter and tried to provide an overview of recent insights into the genetic aspects of NAFLD and CVD. The common genetic and molecular pathways involved in NAFLD and CVD are insulin resistance (IR), subclinical inflammation, oxidative stress, and atherogenic dyslipidemia. According to an investigation, the exact associations between genomic characteristics of NAFLD and CVD and casual relationships are not fully determined. Different gene polymorphisms have been identified as the genetic components of the NAFLDCVD association. Some of the most documented ones of these gene polymorphisms are patatin-like phospholipase domain-containing protein 3 (PNPLA3), transmembrane 6 superfamily member 2 (TM6SF2), hydroxysteroid 17-beta dehydrogenase 13 (HSD17B13), adiponectin-encoding gene (ADIPOQ), apolipoprotein C3 (APOC3), peroxisome proliferator-activated receptors (PPAR), leptin receptor (LEPR), sterol regulatory element-binding proteins (SREBP), tumor necrosis factor-alpha (TNF-α), microsomal triglyceride transfer protein (MTTP), manganese superoxide dismutase (MnSOD), membrane-bound O-acyltransferase domain-containing 7 (MBOAT7), and mutation in DYRK1B that substitutes cysteine for arginine at position 102 in kinase-like domain. Further cohort studies with a significant sample size using advanced genomic assessments and next-generation sequencing techniques are needed to shed more light on genetic associations between NAFLD and CVD.
Complementary Kumaraswamy Weibull Power Series Distribution: Some Properties and Application
Authors: Eraikhuemen Innocent Boyle , Mbegbu Julian Ibezimako , Ewere Friday
Published: July 2020

In this paper, we propose Complementary Kumaraswamy Weibull Power Series (CKWPS) Distributions. The method is obtained by compounding the Kumaraswamy-G distribution and Power Series distribution on a latent complementary distance problem base. The mathematical properties of the proposed class of distribution are studied. The method of Maximum Likelihood Estimation is used for obtaining the estimates of the model parameters. A member of the family is investigated in detail. Finally an application of the proposed class is illustrated using a real data set.
Finite and Numerical Simulations Applied in Tailor Welded Blank
Authors: dos Santos Wellington Augusto , de Andrade Etiene Pereira , Assunção Guilherme Souza , da Silva Gilmar Cordeiro
Published: July 2020

The increase in economic and technological competitiveness means that the automobile industry seeks constant innovation in its production methods and processes, in order to produce lighter, safer and more efficient vehicles. Products with greater mechanical resistance, better conformability, thickness combinations of plates / materials are sought with a focus on reducing mass and increasing the rigidity of the vehicle body. In this scenario, Tailor Welded Blank (TWB), which is a top welding technique (by unconventional processes) of sheets of different specifications (materials, thicknesses and / or coatings), appears as a solution, as it allows localized distribution of mechanical properties, mass, optimizing the relationship between structural rigidity and the total weight of the vehicle body. The great challenge of this technique is to combine two processes with completely different demands, welding and mechanical forming. Due to the complexity of forming TWBs, the use of simulations has been widely adopted. In this review, different results of the numerical simulation methods used for a Tailor Welded Blank are compared, focusing on the details and the influence of the parameters used.
Historical Development of Sultan Yussuf School (Sys), Batu Gajah in the State of Perak, Malaysia, 1907 – 1957
Authors: Shanmugavelu Ganesan , Ariffin Khairi
Published: July 2020

The aim of this research is to study the History of Sultan Yussuf School in Batu Gajah, Perak, and it’s the development from 1907 to 1957. Sultan Yussuf School was founded in 1907 by an Indian immigrant named K.Malaiperumal Pillai. Sultan Yussuf School was known as the Government English School, and it was the first English school founded in Batu Gajah, Perak. Sultan Yussuf School or better known as SYS, was attended by students from various races, particularly Malays, Chinese, and Indians. In 1956, Sultan Yussuf School was divided into two, that is for primary and secondary. Since it was the establishment in 1907, Sultan Yussuf School had progressed rapidly and achieved a lot of success in academic and also co-curricular activities. Besides that, Sultan Yussuf School also produced many leaders in the country. One of the former students of Sultan Yussuf School was His Majesty, Sultan Azlan Muhibbuddin Shah, the 34th Sultan of Perak, and was the 9th Yang Di Pertuan Agong (King) of Malaysia.
Research contribution of University of Kerala in the field of Tamil: A Study
Authors: Suguna L S
Published: July 2020

A research university is an academic institution that is committed to research as a central part of its mission. The beginning of research activities in the University of Kerala dates back to 1937. This paper aims to investigate research in the field of Tamil from University of Kerala during the last decade.
Conflicts against Rajaji and his Ministry
Authors: Jeyakumar S
Published: July 2020

The political condition of Tamil Nadu, starting from 1946 to 1948, was unfavorable to the political hegemony of Rajaji, who confronted with multiple challenges and conflicts from the non-Brahmin leaders, particularly from the undisputed leader, Kamaraj and finally adjusted and co-operated with the congress party in all its endeavor. He had outwitted the prospects of Rajaji though he was a cunning, diplomatic, and elite of high order in the state. His power politics in the state ended in a fiasco. Being a Brahmin by descending, he was unable to command respect and gain solidarity from the general public. However, at the national level, he was respected, and his lofty ideals were heard and utilized by the national leaders such as Mahatma Gandhi, Pandit Jawaharlal Nehru, Sardar Vallabai Patel, Gulab Nabi Azad, etc.
Community Based Rural Drinking Water Supply System (Sustainability Challenge in Kannahipuram CBO Scheme)
Authors: Riswan M , Ishaq P
Published: July 2020

Rural Water Supply (RWS) system implemented and maintained by a community-Based Organization (CBO) adopting a participatory approach, which is considered a useful strategy to supply safe drinking water to the people, especially in rural segments of the country in a sustainable manner. This study was carried out based on Kannahipuram CBO managed RWS schemein Alayadivembu Divisional Secretariat Division (DSD). The study gathered primary data through field-based interviews with key stakeholders in CBO managed water supply system and field observations. Also, it collected secondary data from statistical reports from NWSDB, RWS, and CBOs, etc. The findings have been interpreted mainly based on the descriptive qualitative method. This study examines the extent to which the community participation influences community ownership of rural water projects and its sustainability in the Kannahipura scheme. This paper also sets out to analyze the impacts of the participatory approach in the rural water supply system using qualitative and quantitative information that compiled project data with field surveys. The study found that the participatory approach was effectively exercised in Kannahipuram CBO managed water supply scheme to ensure a sustainable system at the village level. However, it was observed that the quality of water is not in a drinkable condition for drinking purposes, and the water source has been contaminated, particularly in the Shallow-well due to climate change, increased demand, and seasonal drought in the region. Hence, this study suggests improving the water quality by using advanced treatment processes to provide safe drinking water at a drinkable level through CBO operation and community participation successfully and effectively.