bluuebunny/crossref_metadata_2025_split huggingface dataset:
MATHEMATICAL RISK ASSESSMENT MODEL FOR BIODIESEL PRODUCTION PROJECTS IN UKRAINE AGRICULTURE
Authors: Halytskyi O. , Polenkova М. , Fedirets O. , Brezhnieva-Yermolenko O. , Hanziuk S.` 
Published: May 2021

Abstract. One of the trends in the development of the market of alternative motor fuels is the production and use of biofuels, biodiesel in particular. Biodiesel which is used by domestic farmers is mainly self-produced. The current situation is related, first of all, to the lack of a single standard (regulation) for biodiesel production technology and is not enshrined in any legal act in Ukraine. In the conditions of the market functioning, agricultural producers face various risk factors, in particular, instability of prices for fuels and lubricants, monopolization of certain regions or market segments by traders, low quality of fuel, etc. Conditions of biodiesel production, as well as other economic activities, usually require the creation or involvement of labor, financial and material resources, which also affects the change in the level of risk. These problems can be solved by adapting and improving the existing mathematical apparatus to risk assessment for biodiesel production projects by agricultural enterprises. The main legal act that allows to determine and assess the level of risk is the state standard of Ukraine «Risk Management. Methods of general risk assessment», which served as the methodological foundation of the study. We propose to use three main technological schemes of biodiesel production, namely: cyclic scheme of production with the use of catalysts; non-catalytic cyclic circuit and multi-reactor continuous circuit scheme. In order to analyze each of these schemes, it is proposed to analyze the feasibility of investment in terms of their effectiveness and tie-in to the risks of introducing innovative technologies. The developed methodology provides a substantiation for the choice of technological option for biodiesel production. An algorithm for calculating risks has been proposed for the introduction of biodiesel production, the preparation of business plans and the assessment of criticality of possible losses for the production. The use of methods of vector algebra and fuzzy logic in the formation of the mathematical model makes it possible to estimate the probability indicators of each risk.
Keywords: biodiesel, risks, mathematical model, agriculture, risk assessment, risk assessment methods.
JEL Classification C60, Q42
Formulas: 8; fig.: 0; tabl.: 0; bibl.: 18.
АУКЦІОННА ТОРГІВЛЯ ДЕРЖАВНИМ І КОРПОРАТИВНИМ БОРГОМ В УМОВАХ КРИЗИ
Authors: Крикавський Є. , Мних О. , Бінда Я. 
Published: May 2021

Анотація. Аукціонна торгівля борговими зобов’язаннями найчастіше використовується в умовах розгортання кризових явищ. Ринок облігацій, державний борг і борг приватних структур виступають як об’єкти емпіричних і науково-прикладних досліджень. Метою нашої наукової роботи є визначення особливостей аукціонної торгівлі і державної боргової політики в умовах кризових ситуацій на основі узагальнення закордонного і вітчизняного досвіду, дослідження процесів вибору форматів аукціонної торгівлі борговими зобов’язаннями на вторинному ринку цінних паперів (ЦП) та управління факторами для усунення викривленості такої торгівлі на фінансових ринках, що сприятиме економічному зростанню. Визначено, що в певному інституційному середовищі розвитку вторинного ринку ЦП, де потенційними покупцями боргових ЦП є інвестиційні організації і банки, у т. ч. іноземні, сучасна практика аукціонної торгівлі і нові формати її проведення супроводжуються встановленням нових правил торгів, зростаючим значенням приватної цінності об’єкта й інформаційного супроводу аукціону. В умовах цифровізації економіки і формалізації взаємопов’язаних процесів і трансакцій на фінансових ринках адекватним має бути механізм аукціонної торгівлі. Доведено, що механізм удосконалення практики аукціонної торгівлі і розширення масштабів упровадження нових форматів її проведення неможливі без узгодження інтересів інвесторів, емітентів і різних зацікавлених сторін для усунення викривленості аукціонних торгів борговими зобов’язаннями на фінансових ринках. Виявлено значні відхилення в темпах росту ВВП і державних боргів, зокрема в Польщі, Японії і в Україні, що пояснюються рівнем довіри до держави і спеціалізованих інституцій з управління боргами, цільовою орієнтацією довгострокової економічної стратегії і монетарної політики в умовах кризових ситуацій, зокрема у країнах ЄС і в Україні. Визначено напрями подальших науково-прикладних досліджень для цілей підвищення гнучкості системи аукціонних торгів борговими зобов’язаннями в умовах кризи і посилення їхнього позитивного впливу на економічне зростання.
Ключові слова: аукціонна торгівля, криза економіки, боргові цінні папери, державний борг, вторинний ринок, інвестор, фінансовий ринок, економічне зростання
Формул: 0; рис.: 5; табл.: 0; бібл.: 28.
Structural Model of Psychological Well-being Based on Negative Life Events and Mindfulness with Emphasis on the Mediation of Coping Styles
Authors: Mahmoudi Fatemeh , Bliad Mohammad Reza , Jian Bagheri Masoumeh , Shah Nazari Mehdi , Zahrakar Kianoosh 
Published: May 2021

Aim: Students are one of the most talented and promising segments of society and future builders of their country, and their level of health and psychological well-being will have a significant impact on learning and increasing their scientific awareness and academic success. Therefore, the purpose of this study was to investigate a structural model of psychological well-being based on negative life events and mindfulness with emphasis on the mediating role of coping styles.
Methods: The method of conducting the present study was descriptive correlational of structurequational type. The statistical population of the study were the undergraduate students of Shahid Beheshti University in Tehran, 365 of whom participated through cluster sampling. They responded to questionnaires on negative life events, mindfulness, coping styles, and psychological well-being. The reliability and validity of the instruments were confirmed using Cronbach's alpha coefficient and confirmatory factor analysis. To analyze the data, structural equation method was used with Amos software.
Results: The results showed that the effect of negative life events on the problem-oriented style and psychological well-being is negative and significant. The effect of mindfulness on the problem-oriented style and psychological well-being is positive and significant. The effect of problem-oriented style on psychological well-being is positive and significant. The mediating role of problem-focused coping style in the relationship between negative life events and mindfulness with psychological well-being is meaningful.
Conclusion: The results showed that the model presented among the students of Shahid Beheshti University has a good fit and confirmed the role of the variables of negative life events, mindfulness and problem-oriented coping style in psychological well-being.
SOCIAL MATRIX AND CONSTRUCTION OF GENDER IDENTITY IN NATHANIEL HAWTHORN’S THE SCARLET LETTER
Authors: Iqbal Liaqat , Shah Farooq , Ali Akbar , Ullah Irfan 
Published: May 2021

Purpose of the study: The Scarlet Letter by Nathaniel Hawthorn, already explored from different perspectives by many researchers, has relevance to the social matrix that how gender identity is constructed in the text. In order to explore this perspective, the study deals with the character of Hester Prynne as how she is deconstructing normative gender.
Methodology: For this purpose, the theory of ‘Imitation and Gender Insubordination’ presented by Butler (1993) has been applied. Secondly, the study tries to answer the gender identity of Hester Prynne by using Freudian ‘Identification of gender.’ Lastly, the work is concerned with Hester Prynne’s avoiding the danger of being leper and castaway. The last analysis owes itself to the Freudian understanding of psychoanalysis.
Main Findings: The findings show that gender is purely volatile and oscillating and is usually being constructed by feminist narratives, social appropriations, inborn congenital schema, and sexual orientations. Butler’s arguments get augmented in this study through the analysis of a few characters, particularly Hester Prynne’s, and it has indicated that through the application of Butler’s arguments on gender stance that gender is performative and hence, it has no real or inborn value/definitions. Therefore, it is inferred that gender is performative and is socially constructed.
Application of this study: This study has implications in literature in general, gender studies, and related fields in particular.
Novelty/Originality of this study: Though Nathaniel Hawthorn’s The Scarlet Letter had been written long before that has been explored from different perspectives, the present research is original and new in the sense that it brings social matrix and discusses gender issues in it both from the social and psychological interpretations.
A Sociologia como afirmação / Sociology as assertion
Authors: Fernandes Florestan , Lima Jacob Carlos 
Published: May 2021

Este artigo, ora republicado pela Revista Brasileira de Sociologia, saiu originalmente na Revista Brasileira de Ciências Sociais da Faculdade de Ciências Econômicas (FaFi) da Universidade Federal de Minas Gerais, no volume II, nº 1 de março de 1962. Trata-se do discurso de abertura do II Congresso Brasileiro de Sociologia, realizado em Belo Horizonte no dia 12 de março, pelo seu presidente, Florestan Fernandes.O II congresso da SBS estava programado para se realizar em 1956, mas por questões de cunho político e institucional, só conseguiu se efetivar oito anos após o primeiro. A diretoria eleita em 1962 foi atropelada pelo golpe civil-militar de 1964 que desarticulou a SBS.O III congresso, de reorganização, realizou-se apenas 25 anos depois, em 1987, num contexto de redemocratização e expansão institucional da formação e da pesquisa no país. Em sua abertura, Gabriel Cohn retomou o texto de Florestan, destacando os novos desafios da disciplina em “A Sociologia como interrogação”, agora com os novos desafios colocados numa sociedade que se modernizou rapidamente sem mexer, contudo, na estrutura das desigualdades sociais que, ao invés de diminuírem, aumentaram.Apesar das grandes mudanças na sociedade brasileira nestes últimos 58 anos, o texto de Florestan apresenta uma atualidade desconcertante. Argumenta que a adoção dos critérios de cientificidade na produção do conhecimento não estão dissociados de um determinado padrão de civilização e destaca um horizonte cultural sufocante e um forte irracionalismo “ligados à herança cultural pré-científica, ou de complexo jogo dos interesses sociais que limitam o aproveitamento dos dados e das descobertas da ciência às conveniências de manipulação do poder pelas camadas sociais dominantes, sejam elas quais forem”. As sociedades humanas não passam por um processo evolutivo, linear. A expansão da racionalidade e do conhecimento científico estão sujeitos de forma permanente a tensões e conflitos com fatores irracionais e retrógrados presentes na sociedade e o avanço da ciência depende da consolidação da ordem social democrática. Sociologia é o conhecimento crítico dos fenômenos sociais e, sem liberdade, esse conhecimento não prospera. O ano era 1962, mas em 2021, nosso horizonte está marcado pelas sombras do obscurantismo, do reacionarismo político, social e cultural. Os tempos sombrios estão de volta.Ao lado dessa percepção preocupante do contexto vivido, outras questões são explanadas no texto vinculadas à formação, ao ensino e à atuação do sociólogo, evidenciando uma disciplina então em processo de afirmação, mas indicando desafios ainda a serem enfrentados. A maior parte delas, ainda está presentes nos debates da sociologia brasileira, exigindo sua releitura para melhor qualificar esses debates. Um texto se torna clássico pela perenidade das questões que sugere. Este texto evidencia essa condição.
Discrete Well Affinity Data-Driven Proxy Model for Production Forecast
Authors: Tian X. , Blinovs A. , Khait Mark , Voskov Denis 
Published: May 2021

SummaryA physics-based data-driven model is proposed for forecasting of subsurface energy production. The model fully relies on production data and does not require any in-depth knowledge of reservoir geology or governing physics. In the proposed approach, we use the Delft Advanced Reservoir Terra Simulator (DARTS) as a workhorse for data-driven simulation. DARTS uses an operator-based linearization technique that exploits an abstract interpretation of physics benefiting computational performance. The physics-based data-driven model is trained to fit data increasing the fidelity of the model forecast and reflecting significant changes in reservoir dynamics or physics over its history. The model is examined and validated for both synthetic and real field production data. We demonstrate that the developed approach is capable of providing accurate and reliable production forecast on a daily basis, even if the exact geological information is not available.
Individuals with bipolar disorder have a higher level of peripheral uric acid than major depressive disorder: a case-control study
Authors: Lu Zhe , Wang Yingtan , Xun Guanglei 
Published: May 2021

Abstract
Background: At present, no well-established biomarkers were ever found to distinguish unipolar depression (UD) and bipolar disorder (BD). This study aimed to provide a clearer comparison of UA levels between BD and major depressive disorder. Methods: Peripheral UA of 119 patients with BD in acute stage (AS) and 77 in remission stage (RS), and 95 patients with UD in AS and 61 in RS were measured, so were 180 healthy controls. Results: UA levels in BD group were higher than UD and HC groups regardless of the AS or RS, while differences in UA levels between UD group and HC group were not significant. Differences in UA levels of BD-M (bipolar mania/hypomania) were higher than BD-D (bipolar depression) subgroups, and UA levels of BD-M and BD-D subgroups were higher than UD and HC groups. The comparison of number of participants with hyperuricemia among groups confirmed the above results. There were no significant differences in UA levels of between drug-use and drug-free/naïve subgroups. Conclusion: The study suggests patients with BD had a higher level of UA than UD, especially in mania episode.
Diversity, Enzyme Production and Antibacterial Activity of Bacillus Resource in Sesame-Flavored Liquor Daqu
Authors: Wu Xianyu , Jiang Qianer , Wang Zhishan , Xu Youqiang , Chen Wenhao , Sun Jinyuan , Liu Yang 
Published: May 2021

Abstract
Daqu provides enzymes and precursors for liquor fermentation, and is the core of liquor fermentation. In this study, 11 strains of Bacillus were isolated from sesame-flavored liquor Daqu, which can not only produce protease and amylase, but also have antagonistic effects on common pathogens Escherichia coli and Staphylococcus aureus. According to the gyrA gene phylogeny analysis, these 11 Bacillus strains belong to three species, B1, Y14, Y15, and YPDW9 belong to Bacillus mojavensis, W7, W13, YPDW6, and YPDW12 belong to Bacillus subtilis, W14, Y5 and YPDW1 belong to Bacillus velezensis. According to the results of random amplified polymorphic DNA (RAPD) typing, these 11 Bacillus strains are completely different. The specific primers were used to randomly amplify the biological control genes expressing lipopeptide antibiotics (bioA, bmyB, ituc, fend, srfAA, srfAB, yngG and yndJ), and they all expressed different expressions in these 11 Bacillus strains. This research provides new ideas for strengthening Daqu and lays a foundation for improving the quality of liquor.
Improved method for regeneration and Agrobacterium-mediated transformation of Indian short-day onion (Allium cepa L.)
Authors: MANAPE TUSHAR KASHINATH , Satheesh Viswanathan , Singh Shweta , Singh Major , Anandhan Sivalingam 
Published: May 2021

Abstract
A high-auxin medium, usually used for callus induction, was not effective for Indian short-day onion cv. Bhima super. In this study, we found that the onion seedling radicle was a better explant than shoot tip for embryogenic callus induction, and induction efficiency up to 85.33% along with high embryogenic calli weight was obtained in routinely used medium containing 1.0 mg/L 2,4-D, but specifically supplemented with 0.5 mg/L kinetin. MS medium supplemented with 1.5 mg/L kinetin and 0.125 mg/L ABA showed 73.15% shoot regeneration efficiency from the calli induced from seedling radicle. Geneticin and hygromycin B at 50 mg/L showed optimal selection pressure for 8-week-old onion calli. Agrobacterium-mediated transformation of 8-week-old friable embryogenic calli induced from seedling radicle resulted in phenotypically normal transgenic plants with 1% transformation efficiency. In this study, regeneration and transformation protocols were developed for a widely used Indian short-day onion cultivar, which is instrumental for the development of stable transgenics in this crop.
Estimation of the accuracy of a simplified equivalent circuit for Ku-band GaN HEMTs
Authors: Garber Gennadiy Z. 
Published: May 2021

Abstract
We investigate the accuracy of the intrinsic FET's equivalent circuit with only one nonlinear element – the channel current generator given by the Curtice-Ettenberg model. The parameters of this simplified equivalent circuit are assigned using the 2D quasi-hydrodynamic simulation taking into account the electron velocity overshoot. We calculated the power-added efficiency, transducer power gain, and other amplifier parameters as functions of the maximum available power of an 18-GHz input generator by three methods: using the full 2D model for the intrinsic FET and the large-signal equivalent circuit – complete and simplified. Comparison of the functions obtained indicates the suitability of the simplified equivalent circuit for analysis of GaN HEMT power amplifiers of the Ku band. Since this equivalent circuit is implemented in various commercial software packages for analysis and design of RF and microwave devices, our 2D simulation results can be used in these packages.
Evaluation of Wild Segments Related to Growth Period Traits Using a Modified Wild Soybean (Glycine Soja Sieb. Et Zucc.) Chromosome Segment Substitution Line Population
Authors: Qingyuan He , Xiang Shihua , Yang Huawei , Wang Wubin , Shu Yingjie , Li Zhengpeng , Wang Songhua , Yang Xiaoyan 
Published: May 2021

Abstract
Soybean seeds contain high levels of oil and protein providing 69% and 57% of dietary protein and oil respectively. Although many quantitative trait loci for 100-seed weight (100SW), protein content (PRC) and oil content (OIC) have been reported, their genetic controls in soybeans remain unclear. The QTL–allele constitution of three traits in the Sichuan and Chongqing eco-regions population (SCLBP) was studied using a representative sample composed of 228 accessions tested under four environments and analyzed based on 135 SSR and 107081 valid SNP (single nucleotide polymorphism linkage) markers. The varied range of 100SW, PRC and OIC of SCLBP were 4.82-33.35, 36.47-49.75 and 14.68-21.77 among accessions, respectively. The heritability (h2) and genetic coefficient of variation (GCV) of three traits were high. As a result, 26, 33 and 31 QTLs were found by SSR to be associated with 100SW, PRC and OIC, respectively. The allele of Sat_260 for 100SW was detected in 4 environments. In addition, 28, 198 and 250 loci for 100SW, PRC and OIC were found by SNP using mixed linear model (MLM), respectively. Further SNP haplotype analysis showed that 13, 35 and 60 blocks for 100SW, RPC and OIC were found. The block of Gm11_9895764-9917646 for 100SW was simultaneously detected in four environments. Among these QTLs, 1, 5, and 7 for 100SW, PRC and OIC were found by two methods of SSR and SNP at the same time. A majority of these QTLs overlapped with the previously reported loci. However, 9, 11 and 9 loci for 100SW, PRC and OIC using SSR and 3, 5 and 8 for 100SW, PRC and OIC haven’t been reported using SNP in the study, respectively. Moreover, the genes of Glyma.11g130800, Glyma.13g217000 and Glyma.08g122600 were considered to be the most likely genes controlling 100SW, PRC and OIC, respectively. Our findings provide evidence for mixed major plus polygenes inheritance for three traits and an extended understanding of their genetic architecture for molecular dissection and breeding utilization in soybeans.
Genetic diversity of natural populations of Taxus wallichiana var. mairei
Authors: Luo Qianqian , Li Fengqing , Yu Longhua , Wang Liyun , Xu Gangbiao , Zhou Zhichun 
Published: May 2021

Abstract
Maire yew (Taxus wallichiana var. mairei (Lemée H. Léveillé.) L. K. Fu et Nan Li) is a rare and endangered tree species, and it is also a precious timber species in China. We used 13 microsatellites to assess the genetic diversity and differentiation of 665 Maire yew samples from 18 natural populations. A total of 291 alleles were detected. The average number of alleles (Na=22.39), expected heterozygosity (He=0.74), polymorphic information content (PIC = 0.86) and Shannon diversity index (I = 1.66) of the loci indicated a high level of genetic diversity in natural Maire yew populations. Moreover, gene flow was more active among populations (Nm=1.62) than within populations. Among the 18 populations, the Xinfeng population in Jiangxi Province has the highest genetic diversity. Although each of the studied populations should be protected from further deforestation and agricultural expansion, the Xinfeng population deserves the highest conservation priority. The results based on analysis of molecular variance showed that genetic variation occurred mainly within populations (84.90%; P < 0.001), which indicated that the degree of genetic differentiation of the natural populations of Maire yew was low. Based on UPGMA, the 18 populations were categorized into 4 groups. A Mantel test showed that there was no significant correlation between standard genetic distance and geographical distance or altitude differences among the populations. The genetic clustering results also indicated that the genetic relationship followed a north to south clustered trend. The information presented here forms the basis for the development of genetic guidelines for appropriate conservation programs.
Cancer Pain Presentation, Management, and Outcomes in the Emergency Department
Authors: Gupta Rishi , Lin Lucia , Resley Vanessa , Khan Ayesha , Shatsky Rebecca A , Coyne Christopher John 
Published: May 2021

Abstract
Purpose: To describe the experience of patients with cancer presenting to the emergency department (ED) with pain and to identify patient and treatment factors that may affect patient outcomes. Methods: We conducted a retrospective cohort study to evaluate adult patients with active cancer, who presented to one of two academic EDs with a chief complaint of pain between June 1st, 2012 and December 31st, 2015. Variables analyzed included disease and demographic characteristics, pain character, treatment methods, ED disposition, and revisit rate. We utilized multivariable logistic regression to evaluate the association of our exposure variables on ED disposition. Results: We included 483 patients with active cancer with a chief complaint of pain. Patients with severe pain on arrival tended to be younger than those who did not present with severe pain (median: 58 vs 62 respectively, OR 8.0 p<0.01). Patients with high ECOG statuses (3-4) with severe pain on arrival (≥ 7 out of 10) had less improvement in their pain (OR 8.4, p<.01). Long delays in initial analgesic administration were associated with increased rates of subsequent admission (OR 3.4) [p = 0.14]. Although opioid analgesics led to greater decreases in pain than non-opioid analgesics, patients treated with opioids were more likely to be admitted (43% vs 34.5% AOR 1.51, p =.048).Conclusion: Several factors appear to play a role in the effectiveness of ED cancer pain management including patient and treatment characteristics. We hope that these findings will inform future studies and best-practice initiatives targeting ED cancer pain.