bluuebunny/crossref_metadata_2025 huggingface dataset:
The Association Between Sexual Orientation, BMI, Obesity Diagnosis, and Provider Recommendation for Weight Management
Authors: Wolfgang Kristen , Takeshita Junko , Fitzsimmons Robert , Guerra Carmen E.
Published: May 2021

Background: National data show that lesbian and bisexual women are more likely to be overweight and obese compared to straight women. Little is known about whether provider recommendation for weight management varies across these populations. Objectives: To compare, among lesbian, bisexual, and straight females with BMIs≥30: 1) the average Body Mass Index (BMI); 2) receipt of a diagnostic code for obesity; and 3) receipt of a provider recommendation for weight management.Design: We performed a cross-sectional study of 536 patient records from four outpatient academic internal medicine practices at the University of Pennsylvania between January 1, 2019 to December 31, 2019 to determine variations in average BMI, proportion of ICD-10 codes for obesity, and proportion of weight management recommendations offered by providers among lesbian, bisexual and straight females with BMIs≥30. We classified provider recommendations as definite, possible, and absent. Multivariable linear (BMI outcome only) or logistic regression was used to evaluate the associations between sexual orientation and each of the following outcomes: BMI, receipt of obesity diagnosis, and weight management recommendations.Patients: Lesbian, bisexual, and straight females with BMIs≥30Main Measures: 1) the average Body Mass Index (BMI); 2) receipt of a diagnostic code for obesity; and 3) receipt of a provider recommendation for weight management Key Results: There were no significant differences in BMI, receipt of obesity diagnoses, or weight management recommendations between lesbian, bisexual, and straight females with BMIs≥30. However, only about half the patients with BMIs≥30, regardless of sexual orientation, received a weight management recommendation as recommended by the United States Preventive Services Task Force (USPSTF) guidelines.Conclusion: Disparities in BMI, receipt of obesity diagnoses, or receipt of weight management recommendations between sexual orientation minority and heterosexual females do not exist in this urban population. However, provider recommendation for weight management was suboptimal in all the groups.
REASONS FOR THE FORMATION OF THE SHADOW ECONOMY OF UKRAINE
Authors: Nikitchenko E. , Bukhtiarova A.
Published: May 2021

The shadow economy has been an integral part of society since the beginning of economic relations. With each stage of society’s development, it becomes an increasing problem and has more and more destructive consequences. Shadow processes pose a significant threat to the national economy of Ukraine. Besides, this problem is a marker of unresolved issues in the marketplace and its governance structure, as each question has its cause. That is why addressing the shadow economy is such an essential step in improving the country’s economic situation in difficult times of crisis. It is clear that the complete overcoming of shadowing processes is a perfect idea, but still, control over this phenomenon must be of high quality. The primary purpose of the study is to highlight the main factors of shadowing for the active form of tools to combat the shadow economy. During the review of the material, a causal relationship was structured and identified by the topic, and a method for normalizing the shadow economy was developed. It has been found that the shadow economy is the result, a specific socio-economic response to incorrect economic policies. It is also established that the tax burden is one of the leading factors in the transition of part of the company’s activities into the shadows. Improper distribution of the tax burden significantly reduces the competitiveness of small and medium-sized businesses in the goods and services market. It is also concluded that the shadow economy is a particular shock absorber of social inequality, namely the large gap between the poor and the wealthy. Hence, the shadow economy provides lower-priced goods that are more affordable for the poor. It has also been found that corruption also plays a massive role in this issue. It provokes the shadow economy as an effect on social and legal inequality and often the inability of the enterprise to survive without ties to the administrative apparatus. The shadow economy is a reaction to imperfect antitrust policies, where small businesses are less competitive and often cannot enter the market at all. Methods for stabilizing the level of the country’s shadow economy have also been developed and proposed.
ANALYSIS OF GAS AND ELECTRICITY DISTRIBUTION NETWORKS: THE TARIFF REGULATION REVIEW
Authors: Kolosok S. , Vasylieva T.
Published: May 2021

The distribution of gas and electricity certainly belongs to the strategically important activities, the success of which affects the socio-economic situation in the country. Energy distribution companies not only transport energy to customers, but also balance energy consumption, thus influencing all economic processes. However, the energy sector is characterized by several limiting factors. Companies should optimize their activities through energy supply and reception planning, capacity forecasting, providing the necessary level of flexibility of energy systems and the ability to integrate diversified gas and electricity distribution operators. All this requires a balanced and detailed approach to the formation of tariff policy, which takes into account the cost of maintenance and maintenance of energy networks, justification of the costs of business operations given the possible social response to rising final tariffs for gas and electricity.
Therefore, the issue of tariff regulation in the energy sector requires a detailed study and analysis of best practices for setting tariffs for services for energy network operators. To this end, the study provided a review of the scientific literature on tariff regulation of gas and electricity distribution networks. The results of the study did not show significant elaboration of the topic but revealed only differences in views on optimal pricing for energy distribution networks in different countries.
Järjen harhapolut. Kapitalistinen rationalisaatio ja sen kritiikki Juha Seppälän romaaneissa Yhtiökumppanit, Paholaisen haarukka ja Mr. Smith
Authors: Sevänen Erkki
Published: May 2021

Aberrations of Reason. Capitalist Rationality and its Critique in Juha Seppälä’s Novels Yhtiökumppanit (The Partners, 2002), Paholaisen haarukka (Devil’s Fork, 2008) and Mr. Smith (2012). Juha Seppälä’s early literary works, published in the 1980s and in the early 1990s, usually described spiritually lonely men who suffered from an existential loss of meaning and serious alienation problems in the modern world. After this, Seppälä turned to deal with the transformation of the Finnish way of life and its cultural base, until after the turn of the new millennium he began to critically judge society’s ongoing marketization process. This study analyses his capitalism-critical works, particularly his novels Yhtiökumppanit (The Partners, 2002), Paholaisen haarukka (Devil’s Fork, 2008) and Mr. Smith (2012). These works do not, primarily, consider contemporary market capitalism from a class perspective, although this sort of perspective is also included in them. They are, above all, critical of market capitalist rationality. According to Seppälä, the basic problem of modern economic profit-seeking lies in the fact that in its unchecked form it is largely indifferent with respect to existential, moral, social and ecological values and principles. Free market economy or market capitalism has, therefore, a destructive influence on individuals, communities and ecological systems. The novels at issue emphasize that due to this it is also, in a deeper sense, incapable of producing existentially meaningful ways of life.
Productivity of medicinal raw materials by different genotypes of Matricia chammomila L. is affected with pre-sowing radiation exposure of seeds
Authors: SOKOLOVA Daryna , KRAVETS Alexandra , ZHUK Vladyslav , SAKADA Volodymyr , GLUSHENKO Ludmila , KUCHUK Mykola
Published: May 2021

One of the key tasks of modern pharmacology is complete and diverse use of natural raw materials - microorganisms and plants. So, different approaches of metabolism redirection were applied. Studying of plant protective reactions indicated a possibility to use various stress factors for the metabolism reorientation. One of the most effective approaches is to use ionizing and UV-C exposure. Thus, there is a shift in metabolic processes towards the formation of secondary metabolism substances with antioxidant, anticancer, immunomodulatory and anti-inflammatory effects. Biotechnological use of radiation exposure is based on the systemicity of radiobiological reactions, including protective and adaptive reactions in non-exposed organs («abscopal effect») and even in non-exposed organisms that are found in the same environment as exposed ones («by stander effect»). The products synthesized in these structures are some medicine materials and directly used by human. Radiation exposure affects developing, blocking of primary and secondary metabolism, so must be improved the selection of varieties with initial high productivity of medicinal raw materials, the choice of exposure and optimal doses inducing an increasing yield of the target metabolite and do not reduce the yield of medicinal raw materials. Effect of UV-C and X-ray pre-sowing exposure of seeds to the productivity of inflorescence formation of eight genotypes of Matricia chammomila L. was studied. There were indicated genotypes with increasing yield of inflorescence only under one or two exposure types and the variety with stimulation of flowering under UV-C exposure and absence of the marker under X-ray one.
COMPLEX-ROTATION CALCULATIONS FOR DOUBLY EXCITED STATES (Nℓ N’ℓ’) 2S+1L ᴨ [(2≤N≤ 3 ) ; ( 3 ≤N’≤4); (0 ≤ ℓ ≤ 2 ) AND ( 0 ≤ ℓ’ ≤ 2)] OF HELIUM ISOELECTRONIC SERIES
Authors:   Atomes Lasers Laboratory, Department of physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, Senegal., Gning Youssou , Sow Malick ,   Atomes Lasers Laboratory, Department of physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, Senegal., Diop Babou ,   Atomes Lasers Laboratory, Department of physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, Senegal., Sow Boubacar ,   Atomes Lasers Laboratory, Department of physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, Senegal., Diouf Abdou ,   Atomes Lasers Laboratory, Department of physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, Senegal., Dieng Matabara ,   Department of physics, UFR Applied Sciences and Technologies of Information and Communication, University Alioune DIOP, Bambey, Senegal., Biaye Mamadi ,   Departments of Physics and Chemistry, Faculty of Sciences and Technologies of Formation and Education, University Cheikh Anta Diop, Dakar, Senegal., Wague Ahmadou ,   Atomes Lasers Laboratory, Department of physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, Senegal.
Published: May 2021

In this paper, we report the energies and resonant widths of the [(2s3s 1Se and 2s3s 3Se) (2s4s 1Se and 2s4s 3Se) (2s3p 1P0 and 2s3p 3P0) (2s4p 1P0 and 2s4p 3P0) (2p3p 1De and 2p3p 3De) (2p4p 1De and 2p4p 3De) (3s4s 1Se and 3s4s 3Se) (3s4p 1P0 and 3s4p 3P0) (3p4p 1De and 3p4p 3De) (3d4d 1Ge and 3d4d 1Ge)] Doubly Excited States of Helium isoelectronic series with nuclear charge Z (2 â‰¤ Z â‰¤ 10).Calculations are performedusing the Complex Rotation Method (CRM) in the framework of a variational procedure. The purpose of this study required a new correlated hydrogenic radial wave function combined with a Hylleraas wave function. The study leads to analytical expressions which are carried out under special MAXIMA computational program. This proposed variational procedure, leads to accurate results in good agreement with available other theoretical results.The present accurate data may be a useful guideline for future experimental and theoretical studies in the (Nâ„“ Nâ„“) 2S+1Lá´¨systems.
KARYOMORPHOLOGICAL AND STOMATAL STUDIES OFALLIUM HOOKERITHWAITES
Authors:   Laboratory of Cytogenetics, Plant Breeding, Molecular Biology and Plant Biotechnology., Ismat Sagufta , Kumar Kamini ,   University Department of Botany, Ranchi University, Ranchi-834008, Jharkhand, India.
Published: May 2021

AlliumhookeriThwaites belongs toAmaryllidaceae family is one of the most important medicinal plants, enormously used in cancer or inflammation because it contains large amounts of sulfonylmethane.It is also used to treat coughs, colds, fatigue and to recover immunity. Karyotypic study showed that somatic chromosome number is 2n = 22. Only nearly sub median and nearly median chromosomes are found in the complement. Karyotype formula = 1 nsm(-)+ 10 nm=2n=22. The total length of long arms is 60.36 Ã‚Âµm, ranging from 3.16Ã‚Âµm to 8.23Ã‚Âµm. Total length of short arms is 31.57Ã‚Âµm, ranging from 1.75Ã‚Âµm to 4.11Ã‚Âµm. The total length of the chromosome is 92.17Ã‚Âµm, ranging from 4.78Ã‚Âµm to 12.35Ã‚Âµm. Relative chromosome length ranges from38.70Ã‚Âµm to 100 Ã‚Âµm. Arm ratio ranges from1.70 to2.38.Tf %= 41.63.Centromeric index ranges from 0.40 to 0.28 and The total chromatin index is 100, ranging from 5.18 to 13.40. Anomocytic type of stomata is observedStomatal index and stomatal size were calculated. The maximum length (53.6Ã‚Â±2.06Ã‚Âµm) was observed in basal portion of the adaxial surface and the minimum length (45.2 Ã‚Â± 1.40Ã‚Âµm) was observed in the middle portion of abaxial surface. The maximum width size (24.8Ã‚Â±1.11Ã‚Âµm) was observed in the basal portion of the adaxial surface and the minimum width was (18.8 Ã‚Â± 1.14Ã‚Âµm) at the middle portion of the abaxial surface. Stomatal index 12.63Ã‚Â±0.5) maximum and minimum (6.13Ã‚Â±0.40) was observed.
COPING STRATEGIES FOR COVID-19 IN THE MOROCCAN POPULATION
Authors:   University Psychiatric Hospital Ar-Razi in Sale, Faculty of Medicine and Pharmacy, Mohammed V University of Rabat- Morocco., Benzahra S. , Belbachir S. ,   University Psychiatric Hospital Ar-Razi in Sale, Faculty of Medicine and Pharmacy, Mohammed V University of Rabat- Morocco., Ouanass A. ,   University Psychiatric Hospital Ar-Razi in Sale, Faculty of Medicine and Pharmacy, Mohammed V University of Rabat- Morocco.
Published: May 2021

Background: The coronavirus infection is pandemic emerging infectious disease caused by the coronavirus SARS-CoV-2. This pandemic has had serious social and economic consequences due to the confinment and curfew applied in various countries around the world. The psychosocial responses to this pandemic are variable and depend on the coping strategies of each individual which can mitigate and moderate the impact of these psychosocial responses. Objective: To identify the different coping strategies implemented by the Moroccan population. Methods: We conducted an online survey from April 23 to May 23, 2020, through a questionnaire published on social networks using Google Forms. The assessment of coping strategies was carried out through the Brief Cope scale. Results: 404 individuals participated in the study. The mean age was 36.86 years, 65.6% were female, 14.1% had a psychiatric history, 28% had a medical-surgical history and 30.2% had a substance use disorder. Study participants showed a maximum level acceptance as a strategy of adaptation (6.22 Â± 1.69) followed by positive reframing (5.72 Â± 1.71) then religion (5.45 Â± 1.8). The least used strategies were substance use (2.29 Â± 0.91) and denial (3.05 Â± 1.42). Problem-focused coping was more used in our sample (4.34 +/- 1.22) compared to emotion-focused coping (4.21 +/- 0.64). Conclusions: The pandemic of Covid-19 had a significant negative impact on the mental health of populations including the Moroccan. The most frequently adopted coping strategies are acceptance, positive reframing, and religion. Psychological support remains necessary in order to safeguard mental health in the face of stressful situations.
The use of biometric technologies for bank transaction security management against the background of the international experience: Evidence from Ukraine
Authors: Kurylo Mykola , Klochko Alyona , Volchenko Nataliia , Klietsova Nataliia , Bolotina Anna
Published: May 2021

In view of the expanding range of banking services in Ukraine, the issue of introducing innovative means of protecting consumers against illegal actions in the field of banking becomes relevant. This paper aims to determine the effectiveness of biometric technologies for customer identification during banking transactions, the legality of their use, and to identify areas for the development of state policy focused on the legal use of biometric data in order to protect the rights and legitimate interests of individuals and legal entities. Based on analysis and systematization of scientific publications and regulatory framework, it was found that a potential direction for banks to implement the customer focus concept in their services to establish the appropriate level of security is the use of biometric technologies that ensure the proper storage of personal data. The summarized information on the actual application of biometric identification methods in the banking sector allows stating that the factors stipulating the criminal offenses using biometric data can be neutralized by the subjects of counteracting such offenses and through effective legal remedies. Contradictions arising between the state of regulatory support and the actual needs for the use of biometric technologies in the field of banking in Ukraine decelerate the use of effective security tools with a high degree of reliability in the banking sector. It is concluded that further implementation of biometrics in the banking sector in Ukraine requires a comprehensive approach and consideration of the best world practices.
Searching for the cost-optimal road trajectory on the relief of the terrain
Authors:   St. Petersburg State University, Abbasov Majid E. ,   Institute for Problems in Mechanical Engineering of the Russian Academy of Sciences, Sharlay Artyom S. ,   Military Educational Institute of Logistics named after General of the Army A. V. Khrulyov
Published: May 2021

The article analyzes the problem of obtaining the cost-optimal trajectory for building a road. Using the apparatus of mathematical modelling, the authors derive the cost functional, the argument of which is the function that describes the path trajectory. The resulting functional after some additional transformations is written in a simpler form. For the problem of the calculus of variations obtained in this manner, an optimality condition is derived. This condition takes into account the specifics of the constructed functional. Unlike the classical Euler—Lagrange condition, it leads not to a differential, but to an integro-differential equation. An illustrative example of the numerical solution of the obtained equation using the methods of computational mathematics is provided.
Stability analysis of a nanopatterned bimaterial interface
Authors:   St. Petersburg State University, Shuvalov Gleb M. , Kostyrko Sergey A. ,   St. Petersburg State University
Published: May 2021

In the article it is shown that the nanopatterned interface of bimaterial is unstable due to the diffusion atom flux along the interface. The main goal of the research is to analyze the conditions of interface stability. The authors developed a model coupling thermodynamics and solid mechanics frameworks. In accordance with the Gurtin—Murdoch theory of surface/interface elasticity, the interphase between two materials is considered as a negligibly thin layer with the elastic properties differing from those of the bulk materials. The growth rate of interface roughness depends on the variation of the chemical potential at the curved interface, which is a function of interface and bulk stresses. The stress distribution along the interface is found from the solution of plane elasticity problem taking into account plane strain conditions. Following this, the linearized evolution equation is derived, which describes the amplitude change of interface perturbation with time.
Bacteriological and physical quality of Fiche drinking water from households and reservoirs, Oromia, Ethiopia
Authors: Sebsibe Israel , Degaga Birhanu , Feye Gezahegn , Tekle Tsige
Published: May 2021

Drinking water is the major source of bacteria pathogens in developing countries along with poor sanitation and contamination of food with a pathogen. More than half of the population of the country uses unimproved sanitation facilities while 36% of them practiced open defecation. The aim of the study was to investigate the suitability of public water for drinking. The study is designed to include a survey of 90 respondents and experimental analysis of 170 water samples from households and reservoirs. Water quality parameters, such as temperature, electrical conductivity, turbidity, total dissolved solids, and bacteriological parameters like total coliforms (TC) and fecal coliforms (FC) were determined. Many of the respondents (88.8%) remarked that the water has no smells, tastes, and color. The experimental analysis confirmed that temperature (19.7 °C), electrical conductivity (269.63 μS/cm), turbidity (1.17 NTU), and total dissolved solids (134.3 mg/L) were found to be below the prescribed limit of World Health Organization guidelines for drinking water. Total coliforms (9.29 CFU/100 mL) and fecal coliforms (5.07 CFU/100 mL) were detected from pipe water sources during the wet season showing non-compliance with the guidelines. The reservoir samples were free from bacterial contamination. The main point of drinking water contamination was the household, where unsafe water handling practice was a common habit in the study area. Hence, awareness conception training on safe water handling practices is highly recommended for the communities.
Comparing deep learning with several typical methods in prediction of assessing chlorophyll-a by remote sensing: a case study in Taihu Lake, China
Authors: Zhao Xiaolan , Xu Haoli , Ding Zhibin , Wang Daqing , Deng Zhengdong , Wang Yi , Wu Tingfong , Li Wei , Lu Zhao , Wang Guangyuan
Published: May 2021

Chlorophyll-a (Chl-a) is an important index in water quality assessment by remote sensing technology. For the study of Chl-a value measurement in rivers or lakes, there are many classical methods, such as curve fitting, back propagation (BP) neural network and radial basis function (RBF) neural network, and all of them have some corresponding applications. With the rise of computer power and deep learning, this study intended to analyze the measurement of water quality and Chl-a in deep learning (DL) and to compare it with several classical methods, so as to explore and develop better methods. Taking Taihu Lake of China as the case, this study adopted the measured data of Chl-a in Taihu Lake in 2017 and the data corresponding to the same time from Landsat8. In this study, the four methods were used to invert the distribution of the Chl-a value in Taihu Lake. From the results of inversion, the power curve fitting model with ∑Residual2 of fitting of 90.469 and inverse curve fitting model with the ∑Residual2 of fitting of 602,156.608 had better results than the other curve fitting models; however, they were not as accurate as the machine learning method from segmentation results images. The machine learning method had better accuracy than the curve fitting methods from segmentation results images. The mean squared error of testing of the three methods of machine learning (BP, RBF, DL) were respectively 1.436, 4.479, 4.356. Thus, the BP method and DL method had better results in this study.
Application of the ‘theory of planned behavior’ to understand farmers’ intentions to accept water policy options using structural equation modeling
Authors: Mahdavi Taghi
Published: May 2021

The agricultural sector is the largest sector of water consumers, and farmers are important stakeholders involved in water conservation. This research has been conducted to determine how native farmers support different policy options to reduce agricultural water consumption. Structural equations modeling was used to construct structures derived from the ‘theory of planned behavior’. For each policy option, a separate model is proposed and the modeling data supports the view that attitudes, subjective norms, and perceived behavioral control have a positive and significant effect on the intention. Attitudes, and perceived behavioral control, have the strongest effect on intention. Significantly, intention also have a positive impact on farmers' behavior. According to the results of the present research, the variance explained is over 85% for intentions and the variance explained for the farmers' behavior on water policy options is above 45% which is a result that indicates the high ability of the ‘theory of planned behavior’ in predicting policies achievement on saving agricultural water resources. It is argued that the field of psychology, and in particular environmental psychology, can play an important role in understanding more of the drivers to reduce agricultural water consumption and contribute to the social research program for water policy.
Enhanced As(III) sequestration using nanoscale zero-valent iron modified by combination of loading and sulfidation: characterizations, performance, kinetics and mechanism
Authors: Cheng Shun , Liu Hong , Anang Emmanuella , Li Chunxia , Fan Xianyuan
Published: May 2021

Nanoscale zero-valent iron (nZVI) and sulfides have been confirmed to be effective in arsenic sequestration from aqueous solution. In this study, attapulgite supported and sulfide-modified nanoscale zero-valent iron (S-nZVI@ATP) are synthesized to realize the superposition effect of enhanced arsenic sequestration. The results indicated that nZVI clusters were well disaggregated and the BET specific surface area increased from 19.61 m2·g−1 to 46.04 m2·g−1 of S-nZVI@ATP, resulting in an enhanced removal efficiency of arsenic from 51.4% to 65.1% at 20 min. The sulfides in S-nZVI@ATP mainly exist as mackinawite (FeS) and this causes the spherical nanoparticles to exhibit a larger average particle size (94.6 nm) compared to bare nZVI (66.0 nm). In addition, S-nZVI@ATP exhibited a prominent ability for arsenic sequestration over a wide pH range of 3.0–6.0. The presence of anions SO42− and Cl− can enhance the arsenic removal whereas HCO3− inhibited it. The arsenic adsorption by S-nZVI@ATP could be explained by the pseudo-second-order kinetic model and the Langmuir model, with the maximum adsorption capacity of 193.8 mg·g−1. The mechanism of As(III) sequestration by S-nZVI@ATP involved multiple processes, mainly including precipitation conversion from FeS to As2S3, surface-complexation adsorption and co-precipitation.
DINÂMICA DO USO E OCUPAÇÃO DO SOLO NA BACIA HIDROGRÁFICA DO RIO PIMENTA, REGIÃO SUDESTE DO ESTADO DE RONDÔNIA: AVALIAÇÃO E CENÁRIOS FUTUROS
Authors: Lima Duarte Miqueias , Farias Mendonça Janete , Cristina Bonfanti Dhuliani
Published: May 2021

Compreender as modificações no uso e ocupação do solo e as demandas sociais relacionadas é de grande valia, pois permite o ordenamento territorial e o desenvolvimento de políticas públicas de forma mais adequada. Nesse sentido, este estudo avaliou as mudanças no uso e ocupação do solo na bacia hidrográfica do rio Pimenta, entre as décadas de 1990 e 2019, além disso, realizou-se uma simulação para cenários futuros. O uso do solo foi avaliado entre os anos de 1990, 2000, 2010 e 2019, em seguida, com base na matriz de transição histórica, foram elaborados cenários futuros para 2030 e 2040. Os resultados obtidos mostraram grandes perdas de áreas de floresta, principalmente, na primeira década, para a implementação de pastagens, seguidas pela agricultura. No cenário futuro, o modelo indicou que mais de 809,83 km² da vegetação florestal serão removidos até 2040 para o estabelecimento de práticas agropecuárias pouco produtivas.
A EDUCAÇÃO POR TECNOLOGIAS DIGITAIS DA INFORMAÇÃO E COMUNICAÇÃO NA PANDEMIA DO COVID-19 À LUZ DA GEOGRAFIA
Authors: Barbosa de Oliveira Tairan
Published: May 2021

O presente trabalho desenvolve uma análise da educação escolar na sociedade brasileira, na perspectiva das tecnologias digitais da informação e comunicação (tdics) utilizadas na educação no contexto de isolamento social decorrente da pandemia do Covid-19 a partir da Geografia, que cumpre função fundamental para compreensão das dinâmicas territoriais como lócus do processo social. Para tanto, dentro dos limites deste trabalho, realizou-se apreciação de atributos do sistema de educação brasileiro desde aspectos gerais normativos, perfil comum da infraestrutura à sistemática de monitoramento da educação, com vistas ao entendimento da função escolar e do perfil docente. Por conseguinte, foram expostas características da forma de uso das TDICs na sociedade e na educação brasileira, relacionadas ao modelo de cidadania instituída pelo Estado que define os objetivos da educação.
ANÁLISE DA DINÂMICA DE USO E COBERTURA DA TERRA NA REGIÃO METROPOLITANA DE NATAL NO PERÍODO DE 1984 A 2018
Authors: Frazão Ana Paula , Eustáquio Amaro Venerando , Braz de Sousa Silvio
Published: May 2021

Mapas de cobertura e uso da terra são importantes ferramentas de ordenamento territorial. Este estudo buscou compreender e quantificar o uso e a cobertura da terra na Região Metropolitana de Natal nos anos de 1984 e 2018, a partir de um processo de classificação supervisionada (algoritmo de Bhattacharya) de um compositie anual de imagens LANDSAT 5-TM e LANDSAT 8-OLI. Os resultados apontam que entre 1984 e 2018 (34 anos) ocorreu intensa e rápida conversão das áreas de vegetação (redução de ~1.402 km²) e sua apropriação para atividades antrópicas, predominantemente agropecuária. Também se constatou um processo de urbanização bastante expressivo, registrando uma expansão urbana de ~243%. Nossos resultados corroboram com a observada sinergia entre dados orbitais da série LANDSAT e Rapideye e colabora para o entendimento que a metropolização de Natal foi institucional.
Scaling Digital Images Using Homomorphic Encryption
Authors:   Southern Federal University, Babenko Liudmila , Rusalovsky Ilya ,   Southern Federal University
Published: May 2021

Since time immemorial, cryptography has provided secure transmission of information in an insecure environment, keeping the data secret. Not so long ago the homomorphic cryptography began to actively develop. Its distinctive feature is that this type of cryptography allows you to process encrypted data without their preliminary decryption in such a way that the result of operations on encrypted data is equivalent, after decryption, to the result of operations on open data. Because of these features, homomorphic encryption can be effectively used in various cloud services to perform secure computing and secure image processing. At the same time, it is guaranteed that no one will have open data, even the service that performs the calculations. Purpose of the work: development of methods and tools for homomorphic encryption that allow performing homomorphic implementation of image processing algorithms. Research methods: analysis of possible implementations of digital image processing using homomorphic encryption, analysis of existing problems of performing a homomorphic implementation for image processing algorithms. Results: a method for homomorphic comparison of bits and numbers presented as an array of bits is proposed; a homomorphic implementation of the EPX image resizing algorithm is proposed; the complexity of the operation is analyzed when one pixel of the original image is enlarged using the proposed method; the analysis results are presented.
Criteria and Parameters for Estimating Quality of Penetration Testing
Authors:   St. Petersburg Federal Research Center of the Russian Academy of Sciences, Makarenko Sergey
Published: May 2021

Relevance. Security issues of information systems in critical infrastructure objects become important now. However, current tasks of information security audit of critical infrastructure objects are mainly limited to checking them for compliance with requirements of standards and documents. With this approach to the audit, security of these objects from real attacks by hackers remains unclear. Therefore, objects are subjected to a testing procedure, namely, penetration testing, in order to objectively verify their security. An analysis of publications in this area shows that there is not mathematical approaches to selection of tests, as well as parameters and criteria for evaluating the effectiveness of penetration testing. The goals of the paper is to form specific parameters of completeness, efficiency, reliability and cost of testing, as well as, in a generalized form, a group of criteria “efficiency/cost”, allowing to estimate the quality of test sets, as well as to compare different penetration testing scenarios with each other. Research methods. Methods of probability theory and mathematical statistics, methods of processing experimental data, as well as the results of other studies in the field of software security testing are used in the paper to achieve the research goals. Results. The general form of the “efficiency/cost” criteria for estimating the quality of penetration testing, as well as formal particular parameters for evaluating separate parameters in the proposed criteria – the parameters of completeness, efficiency, reliability and cost are presented in the paper. The results of the paper can be used by auditors and testers to objectively justify test sets and compare different penetration testing scenarios with each other. The material of the paper can be useful for specialists who make research is such an area as penetration testing. Keywords: penetration testing, information technology impact, testing quality criterion, testing quality, testing completeness, testing efficiency, testing reliability, testing cost.
Parametric Modeling of the State of Critical Information Infrastructure Object Under Destructive Impact Conditions
Authors:   ANO DPO «Uchebnyy tsentr «Eshelon», Kubarev Aleksey , Lapsar’ Aleksey ,   FSTEK of Russia (Federal service for Technical and Export control) for the Southern and North Caucasian Federal Districts, Nazaryan Sergey ,   Rostov State University of Economics
Published: May 2021

The purpose of the study: development of a method for obtaining parameterized values of local characteristics of a diffusion Markov process. It is used to simulate the state of a critical information infrastructure object under off-normal operating conditions caused by a destructive information impact. Methods: synthesis of local characteristics of evolutionary equations which describe the state of a critical information infrastructure object, using the Markov theory for estimating multidimensional diffusion processes as well as the apparatus for studying moment functions. Results: the problems of parametric modeling of the state of critical information infrastructure objects are analyzed on the basis of diffusion Markov processes in the process of synthesis of evolutionary equations which describe the behavior of such objects. The study reveals features of the functioning of objects, which implement the management of complex technical systems in the conditions of normal operation as well as off-normal operation, caused by destructive information impact. A method has been developed for the synthesis of local characteristics of the diffusion process, which simulates the behavior of critical information infrastructure objects during off-normal operation. An example of the formation of a domain for determining the characteristics of a destructive information impact, used as a parameter of synthesized models for assessing the state of objects of critical information infrastructure, is given. The proposed method can be used as the basis for specifying technical requirements for critical information infrastructure objects that perform the functions of automated control at promising and modernized complex technical facilities.
Mapping Biomolecular Sequences: Graphical Representations - Their
Origins, Applications and Future Prospects
Authors: Nandy Ashesh
Published: May 2021

:

The exponential growth in the depositories of biological sequence data has generated an
urgent need to store, retrieve and analyse the data efficiently and effectively for which the standard
practice of using alignment procedures are not adequate due to high demand on computing
resources and time. Graphical representation of sequences has become one of the most popular
alignment-free strategies to analyse the biological sequences where each basic unit of the
sequences – the bases adenine, cytosine, guanine and thymine for DNA/RNA, and the 20 amino
acids for proteins – are plotted on a multi-dimensional grid. The resulting curve in 2D and 3D
space and the implied graph in higher dimensions provide a perception of the underlying
information of the sequences through visual inspection; numerical analyses, in geometrical or
matrix terms, of the plots provide a measure of comparison between sequences and thus enable
study of sequence hierarchies. The new approach has also enabled studies of comparisons of DNA
sequences over many thousands of bases and provided new insights into the structure of the base
compositions of DNA sequences. In this article we review in brief the origins and applications of
graphical representations and highlight the future perspectives in this field.
Hyperoestrogenisme bij een vrouwelijke chihuahuapup
Authors: De Loor J. , Van Soom A.
Published: May 2021

Een vrouwelijke intacte chihuahuapup van vier maanden oud werd aangeboden met als klacht vulvazwelling en seksueel rijgedrag op een speelgoedbeer. Beide klachten waren reeds aanwezig vanaf 9-10 weken ouderdom. Tijdens het consult viel op dat de pup ook sterk opgezette melkklieren vertoonde. De volgende differentiaaldiagnose werd vooropgesteld: gonadotropineonafhankelijke (perifere) vroegtijdige puberteit (of vroegtijdige pseudopuberteit) ten gevolge van een exogene opname van oestrogenen, ofwel interseksualiteit. De eerste mogelijkheid leek het meest waarschijnlijk gezien de eigenares het gezicht en de schouders dagelijks met oestrogenengel insmeerde. Er werd aangeraden om het contact van de pup met de oestrogenengel te vermijden. Deze behandeling leverde gunstige resultaten op na een periode van twee maanden, met zelfs het compleet verdwijnen van de klachten vier maanden na het initiële consult.
Beginjaren van de KI bij rundvee in Vlaanderen: Deel 2: In de verschillende provincies (1949-1975)
Authors: Devriese L. , Bonte P.
Published: May 2021

Na een vroege experimentele periode die zich,  zoals beschreven in deel 1, in hoofdzaak afspeelde aan de piepjonge Gentse veeartsenijschool, ging halverwege de vorige eeuw de kunstmatige inseminatie bij runderen definitief van start. In 1948 verscheen het eerste en belangrijkste ministerieel besluit (MB) dat de runder KI in België regelde.
Vraag & Antwoord
Authors: Roels K. , Claerebout E. , Decaluwe R.
Published: May 2021

Overdracht van piroplasmose bij paarden
Behandeling van cryptosporidiose bij kalveren
Melkproductie bij de zeug
Tong- en staartnecrose bij een hond met atypische, acute, steroïdresponsieve meningitis-arteritis
Authors: Van Meervenne S. A. E. , Declercq J. , Tipold A. , Chiers K. , Van Soens I. , Van Goethem B. , Van Ham L. M. L.
Published: May 2021

Steroïdresponsieve meningitis-arteritis (SRMA) is een vaak voorkomende neurologische aandoening bij jonge honden. Typische klinische symptomen voor de acute vorm van SRMA zijn nekpijn, depressie en koorts. Deze casereport beschrijft een 1,5 jaar oude pointer met zeldzame neurologische symptomen (unilaterale uitval van verschillende craniale zenuwen en Horners syndroom) en een uitzonderlijke necrose van de tong. Het tongletsel was vermoedelijk onderdeel van de systemische vasculitis ten gevolge van SRMA. De behandeling werd verder gecompliceerd door het ontstaan van een staarttopnecrose en iatrogene calcinosis cutis.
Differentiaaldiagnose van schouderkreupelheid bij de hond
Authors: Van Ryssen B.
Published: May 2021

De belangrijkste schouderaandoening bij de hond is osteochondritis dissecans (OCD) van de humeruskop. Deze aandoening veroorzaakt voornamelijk kreupelheid bij jonge honden van grote rassen. Andere oorzaken van schouderpijn zijn een (partiële) ruptuur van de bicepspees en een calcificatie ter hoogte van de caudale rand van de cavitas glenoidalis. De diagnose van deze aandoeningen berust op een grondig klinisch onderzoek en het in beeld brengen van de letsels via radiografie, echografie en artroscopie. Op basis van de bevindingen kunnen de behandeling en prognose bepaald worden. In dit overzicht worden de klinische en diagnostische bevindingen, de behandeling en de prognose van de drie belangrijkste schouderaandoeningen beschreven.
Enkele kritische punten bij de huisvesting van melkvee
Authors: Declerck I. , Van Gansbeke S. , Opsomer G. , De Vliegher S. , de Kruif A. , Maes D.
Published: May 2021

Huisvesting bepaalt of koeien zich al dan niet comfortabel in hun leefomgeving voelen. Een goede huisvesting moet leiden tot een comfortabele leefomgeving waarin een gezonde melkveestapel optimaal kan produceren en reproduceren. Dit artikel geeft een overzicht van enkele kritische punten bij de huisvesting van melkvee. Vooral loopstallen met ligboxen worden besproken omdat dit in België het meest voorkomende staltype is. In het eerste deel worden de afmetingen en de verschillende onderdelen van een ligbox behandeld. Verkeerde afmetingen en opstellingen leiden tot ongewenst gedrag met nadelige gevolgen voor het welzijn, voor de boxhygiëne en voor de uier- en klauwgezondheid. Daarna volgt een overzicht van de verschillende beddingmaterialen en hun invloed op het beenwerk en op de klauw- en uiergezondheid. Vervolgens worden de voor- en nadelen van een betonnen vloer, een rubberen toplaag en van gietasfalt besproken. Tot slot wordt het belang van een optimale bezetting toegelicht in relatie tot het aantal ligbedden en het aantal voeder- en drinkplaatsen. De conclusie is dat de huisvesting een zeer belangrijke rol speelt bij de gezondheid, het welzijn en de productie- en reproductieresultaten van melkvee. De kritische punten hebben vooral betrekking op de constructie van de ligbox, de kwaliteit van de bodem, de fotoperiodiciteit en de dierbezetting.
Oorlogspaarden
Authors: De Smet J.
Published: May 2021

Paarden speelden gedurende drieduizend jaar een cruciale rol in de oorlogsvoering, tot en met de Eerste en zelfs de Tweede Wereldoorlog. In de middeleeuwen was de cavalerie belangrijk om de infanterie van de tegenstrever te verpletteren. Daar kwam verandering in toen de strijdende partijen op het slagveld vuurwapens gingen gebruiken, waartegen de paarden niet bestand waren. Rijpaarden waren nodig bij de cavalerie en de artillerie, trekpaarden bij de artillerie en de logistiek. De veldartillerie, heel belangrijk in een belegeringsoorlog, werd meer en meer vervangen door een rijdende artillerie, die beweeglijker was en de cavalerie beter kon volgen op het slagveld. In de oorlog werden paarden doorgaans beschouwd als transport- en gevechtsmachines waar niet naar omgekeken werd. Ondervoeding en slechte verzorging waren hun lot. De militaire verslaggeving is heel gedetailleerd, maar de paarden krijgen nauwelijks aandacht. Het oorlogsgeweld deed massa’s paarden sneuvelen, maar veel paarden kwijnden weg door onverzorgde drukletsels van slecht passend tuig, of ze gingen ten onder aan ziekten als schurft en kwade droes.
Оптические и электронные свойства пассивированных поверхностей InP(001)
Authors: Дементьев П.А. , Дементьева Е.В. , Львова Т.В. , Берковиц В.Л. , Лебедев М.В.
Published: May 2021

The effect of chemical passivation in solutions of ammonium sulfide (NH4)2S on the optical and electronic properties of the n-InP (001) surface has been studied. It has been shown that treatment in a 4% aqueous solution of (NH4)2S leads to a decrease of surface band bending and localized charges in near-surface region in the 2 times. Processing in a 4% alcoholic solution of (NH4)2S leads to a decrease in these parameters in 3 times, and moreover, the barrier photovoltage and also reduces in three times.
Эллипсометрические исследования монокристаллов Bi-=SUB=-2-=/SUB=-Se-=SUB=-3-=/SUB=- и Bi-=SUB=-2-=/SUB=-Se-=SUB=-3-=/SUB=-
Authors: Гудавасов Ш.К. , Абдуллаев Н.A. , Джалилли Д.Н. , Бадалова З.И. , Мамедова И.А. , Немов С.А.
Published: May 2021

In this work, by spectroscopic ellipsometry the imaginary and real parts of the dielectric function of Bi2Se3 and Bi2Se3 single crystals were obtained in the photon energy range from 0.7 eV to 6.5 eV, and were determined the energies of allowed direct transitions responsible for some optical properties. By the help of Cody-Lorentz and Lorentz optical oscillators, the dispersion relation is adjusted in conformity with the experimental data. The values of the refractive index n and the extinction coefficient k of Bi2Se3 single crystals are calculated in the energy range from 0.7 eV to 6.5 eV. It was also determined that the maximum absorption corresponds to the transitions at 1.900 eV and 1.949 eV for Bi2Se3 and Bi2Se3, respectively.
Спектральные и электрические свойства светодиодных гетероструктур с активной областью на основе InAs
Authors: Семакова А.А. , Смирнов А.М. , Баженов Н.Л. , Мынбаев К.Д. , Пивоварова А.А. , Черняев А.В. , Кижаев С.С. , Стоянов Н.Д.
Published: May 2021

The results of the study of optical and structural
properties of epitaxial InAs layers grown on an n-InAs substrate,
and spectral and electrical properties of light-emitting diode (LED)
heterostructures with an InAs active layer and various design
and chemical composition of barrier layers are presented; the
properties of heterostructures were studied in the temperature
range 4.2−300 K. A significant influence of the degree of substrate
doping and the properties of heterointerfaces on the form of
emission spectra and power characteristics of heterostructures is
shown. The mechanisms of the carrier transport are studied,
and the prevalence of the diffusion component of the current
at temperatures above 200 K and the presence of the tunneling
component at lower temperatures are shown.
Desempeño y calidad de carne de bovinos en confinamiento alimentados con diferentes niveles de subproductos agrícolas
Authors: González-Salazar Edith , Díaz-Ávila Vicente , Duarte-Vargas Jesús Hemberg , Castañeda-Serrano Román David
Published: May 2021

Objetivo. Evaluar los efectos de diferentes niveles de concentrado fabricado con subproductos agrícolas del departamento del Huila-Colombia sobre el rendimiento y calidad de carne en bovinos confinados. Material y métodos. Se utilizaron 36 toretes F1 Bos taurus x Bos indicus con 347±20 kg de peso corporal y 18 meses de edad confinados bajo condiciones de bosque seco tropical. Los tratamientos experimentales fueron niveles crecientes de concentrado elaborado con subproductos agrícolas en sustitución de pasto Pennisetum spp a razón de 85% forraje:15% concentrado (T1); 75%forraje:25% concentrado (T2); 65% forraje:35% concentrado (T3) y 55%forraje:45% concentrado (T4). Se utilizó un diseño experimental completamente al azar para evaluar las eventuales diferencias entre variables evaluadas: ganancia de peso vivo (GPV), consumo de materia seca (CMS), conversión alimenticia (CA), peso de la canal caliente (PCC), rendimiento en canal (RC), metabolitos sanguíneos y perfil de ácidos grasos en la carne. Resultados. La GPV y el peso final aumentaron con un mayor nivel de concentrado en la dieta (p<0.05). No hubo diferencias en los metabolitos sanguíneos. Los ácidos grasos saturados caproico, caprílico y tridecanoico fueron menores cuando el nivel de concentrado en la dieta aumentó (p<0.05) mientras que, en los ácidos grasos insaturados y poliinsaturados no hubo diferencias entre los tratamientos. Conclusiones. La inclusión de subproductos agrícolas usados en el presente estudio mejora el rendimiento, el consumo de materia seca y reduce el contenido de tres ácidos grasos saturados de la carne en toretes F1 Bos taurus X Bos indicus en confinamiento bajo condiciones de bosque seco tropical.