bluuebunny/crossref_metadata_2025 huggingface dataset:
The Development of Social Capital Through International Students’ Involvement in Campus Organizations
Authors: Glass Chris R , Gesing Peggy
Published: February 2021

This study examines campus organization involvement as a mechanism for social capital development. Researchers used analysis of variance (ANOVA) to examine variations in network size, strength, and composition for international students involved in different types of campus organizations. The researchers also examined the relationship of campus organization involvement to international students’ sense of attachment to the university. Students who participated in major-based organizations or leadership programs had larger, less dense, more diverse networks that lead to social networks which are particularly advantageous to social mobility. Students who participated in campus organizations related to their own cultural heritage had networks built of friends from all cultures, creating a greater sense of belonging and attachment to the university. Implications of social capital for practice and future research are discussed.
Communications Preferences Among International Students: Strategies for Creating Optimal Engagement in Programs and Services
Authors: Ammigan Ravichandran , Laws Kaitlyn N
Published: February 2021

As U.S. institutions continue to welcome larger and more diverse populations of international students, campus support offices are also expected to adjust their programming and outreach strategies to engage a wider student audience and provide them with key information and services. This quantitative study examines the communications preferences of degree-seeking international students enrolled in a mid-size U.S. university. It specifically investigates students’ preferred methods of communication, patterns and frequency in sending and receiving messages, and the types of information they prefer to be informed of. The survey also looks across a number of communication media including email, social media, print communications, and face-to-face interactions to better understand how resources may be directed to individual channels. The authors argue that the most impactful engagement model requires an accompanying, analytics-driven communications strategy to support international students during their stay on campus
Fostering Successful Integration and Engagement Between Domestic and International Students on College and University Campuses
Authors: Rose-Redwood CindyAnn , Rose-Redwood Reuban
Published: February 2021

As the number of international students pursuing higher education abroad continues to increase globally (OECD, 2017), college and university campuses have the potential to serve as key spaces of cross-cultural learning and the cultivation of international friendships. Yet spatial proximity and intercultural contact do not always result in meaningful interactions between different social groups (Wessel, 2009). Various studies have shown that interactions between domestic and international students rarely result in cross-cultural friendships within higher educational settings (Trice, 2004; Gareis, 2012; Rose-Redwood & Rose-Redwood, 2013). This disconnect between international students and host communities is often attributed to the failure of the former to “adjust” to the latter. However, as Ryan (2011) argues, international students are not simply “problems” in need of a solution by university administrators but rather “provide an opportunity for the co-construction of new knowledge and more collaborative ways of working and thinking” (p. 631 and 642). While much attention has been devoted to the challenges that international students face, there is also a need for scholars to consider innovative pathways toward building meaningful relationships between domestic and international students.
International Graduate Students’ Challenges and Learning Experiences in Online Classes
Authors: Karkar-Esperat Tala Michelle
Published: February 2021

The purpose of this case study was to identify the learning experiences and examine the challenges facing three international graduate students enrolled in online, asynchronous classes in an American public university. Applying the lens of constructivism, data were collected from a questionnaire, semi-structured interviews, and a focus group. Findings from the study indicate that the students faced challenges with English language proficiency, isolation, instructor’s lack of experience, and a lack of motivation to study in online classes. Notwithstanding, students described flexibility and convenience as key factors of the learning experiences in a virtual classroom. Implications for administrators and course designers in understanding student perspectives of online classes and best practices for conducting asynchronous classes are provided.
Book Review
Authors: McCardle Peggy
Published: February 2021

This highly readable volume should be required reading for all middle and high school teachers across all content areas. Education administrators and those who provide education and professional development for teachers should also find it quite useful. Parents will also find the information valuable and clearly presented. The overviews of relevant research in each chapter are succinct and helpful information for class- room implementation. The volume, with its impres- sive cadre of contributors, represents a crucial contri- bution to moving the information learned over recent decades into practice. Reed and Santi have done an admirable job of achieving their goal of providing re- search-based evidence on adolescent literacy learning that moves toward a blending of general and special education and better learning gains for all students, including those with learning disabilities.
Q & A
Authors: Mooney Troy , O’Neil Herbert
Published: February 2021

The ever-changing demands placed on school principals have necessitated the development of formal programs for improving the capacity of both existing school principals and those in the pipeline (i.e., assistant principals, vice-principals, and other aspiring school leaders). While there are several well-known development programs such as LEAD at Denver Public Schools and Broward County Public Schools in Florida, other school districts and educational institutions in other locales throughout the country have programs that have begun to emerge. In Dallas, Texas, Troy Mooney, Chief Academic Officer of Life Schools and Herbert O’Neil, Chief Talent Officer of Life Schools have developed a preparation guide and development program to meet the demanding needs of 21st-century school leaders.
School Leader Relationships
Authors: Lasater Kara
Published: February 2021

An important aspect of school leadership is relationship development, but developing meaningful relationships as a school leader is challenging. School leader relationships are challenged by diverse stakeholder groups, varied contexts, and difficult situations. The complex nature of school leader relationships necessitates explicit training for leaders on relational skills. The purpose of this paper is to provide professional development recommendations for school leaders regarding three aspects of relationships: rapport, trust, and communication. Specific ideas for school leaders regarding how to establish rapport, trust, and effective communication are discussed. Finally, the use of structured role-play is discussed as the recommended approach to professional development for school leader relationships.
Beginning Teachers' Experiential Learning in the Era of Common Core
Authors: Dakwa Loy
Published: February 2021

This qualitative, single-case study described the professional learning experiences of a group of beginning teachers who participated in a California teacher induction program. The study contributes to an understanding of factors that form the foundation of professional learning as perceived by the participants. Furthermore, the study adds to extant literature on induction, including the transition period between pre-service and in-service phases, experiential learning throughout day-to-day events and action research undertook during inquiry-based projects. The following themes emerged from the study: transition from pre-service to induction, context for teaching and learning, collaboration with peers, subtle shift from content standards to Common Core standards, questioning and ascertaining the merits of inquiry as professional development, learning by experimentation and from life experiences, current practice as the ultimate payoff, nurturing experiential learning, obstacles to induction, and managing the 21st-century classroom. While beginning teachers perceived induction as one aspect of their professional learning, they deemed other factors, such as school climate, leadership, and bureaucracy as elements that could either advance or thwart their development.
Q & A
Authors: Menuey Brendan , Petrich Evangeline
Published: February 2021

In his book The Principal Michael Fullan stated, the principal's responsibilities have increased enormously over the last two decades. They are expected to run a smooth school; manage health, safety, and the building: innovate without upsetting anyone; connect with students and teachers; be responsive to parents and the community; answer to their districts, and above all deliver results.” At Fairfax County Public Schools (FCPS) in Virginia, Dr. Brendan Menuey and Evangeline Petrich both serve as executive principals; supporting, developing, and supervising principals whose responsibilities are as enormous as Fullan aptly describes.
Promising Practices
Authors: Bryant Jennifer Edic , Escalante Karen , Selva Ashley
Published: February 2021

This study applies transformational leadership theory practices to examine the purposeful ways in which principals work to build the next gen- eration of teacher leaders in response to the shortage of K-12 principals. Given the impact, principals have on student development and the shortage of those applying for the principalship, the purpose of this cross-case analysis was to discover how principals build leadership capacity at their respective school sites and groom individuals for leadership roles. Further, this study explored teacher perceptions of the practices in addition to factors that facilitated or inhibited the implementation of the principals’ practices. Three school principals served as the primary participants for this research, and data were gleaned from interviews, observations, and artifacts. Findings indicated that the principals fostered leadership capacity by providing authentic administrative opportunities for teachers pursuing the administration credential. Additionally, the principals’ methods for building leadership capacity were positively perceived by the identified teacher leaders. Factors that facilitated leadership capacity development include school and district systems and structures, while factors that inhibited teachers’ development include psychological concerns. This study illuminates the need for principals to build leadership capacity at their school sites in order to purposefully prepare teacher leaders for principal succession.
Gender Bias Within the Superintendency
Authors: Bernal Carolyn , Monosov Nadezhda , Stencler Ame , Lajoie Ashley , Raigoza Alison , Akhavan Nancy
Published: February 2021

Current research reveals a large per- centage of teaching positions and administrative ser- vices credentials are held by women, although histori- cally, men dominate the superintendent role. Specifically, in the area of women in the superintendency, a discrepancy exists between men and women in recruitment practices, types of barriers and challenges, and the length of time one stays in the superintendent position. This study examines the superintendent role and the perceived leadership qualities necessary, barriers, challenges, and opportunities, as well as the career pathway taken by those in the superintendent role. With a mixed-method design, the study reflects upon responses from six superintendents, three wom- en and three men, using semi-structured interview questions and data collected with Bolman and Deal’s (1990) Leadership Orientations (Self) Instrument and a demographics survey. A theoretical framework of management and leadership styles was utilized to analyze the data for themes relating to the three research questions. The findings generally indicated women superintendents perceive they are expected to act and behave differently to succeed in the role, while men are more at ease with making decisions and leading others. Gender biases were found to be prevalent for women, as the role of parenthood was the biggest barrier when considering their career pathway. This was not found to be a barrier for men.
The Relationship Between Districts’ Teacher Salary Schedule Structures and the Qualifications of Their Teacher Staffing Profile
Authors: Tran Henry , Buckman David G.
Published: February 2021

Many school administrators face difficulties hiring teachers with the requisite job credentials and qualifications. In this paper, we argue for the potential of salary structures to influence teacher staffing. Specifically, the purpose of this study is to examine whether restructuring teacher compensation salary schedules is associated with attracting larger shares of teachers with the necessary baseline qualifications for the job (i.e., “highly qualified teachers” or HQT) in anon-collective bargaining state. Fixed effects regression using panel data from 2012-2014 for 80 of SouthCarolina’s public school districts was used to address the purpose of the study. The percent of classes not taught by HQT was found to increase as districts become more backloaded. This provides supporting evidence concerning the benefits of frontloading salary schedules. Additionally, potential drawbacks of frontloading salary schedules should be examined to improve the knowledge base of the potential costs relative to benefits of frontloading salary structures.
Strategies for Recruiting Non-Hispanic Black Men into the Field of Pediatrics
Authors: Gilford Clark
Published: February 2021

The focus of this work is on the root causes of the current lack of African American/non-Hispanic Black (NHB) men in the field of medicine and, especially, in pediatric medicine. The lack of diversity could serve to the detriment of the future directions of pediatric medicine. With supporting data, we argue that the low statistics of NHB men in the field reflect a social issue that can be resolved by the action of pediatricians across America. Therefore, we are convinced that the included information and suggested strategies are a valuable contribution to all scientific communities. Success of NHB male inclusion in medicine ultimately benefits the health of the public by facilitating cultural competence and increasing racial and ethnic concordance.
Microfinance Services and Women Empowerment in Biratnagar Metropolitan, Nepal
Authors: Jain Bandana Kumari
Published: February 2021

This article examines how far microfinancing services positively affect the empowerment of Nepali women living in the eastern part of Nepal. A purposive sampling method was used and responses of 97 women were collected through structured questionnaires. The women were using microfinance services on their own and at least from the last three years. Results indicate that the use of microfinance services (credit and saving) helps women to empower. Easy access to financial services and satisfaction with the loan payment period causes no difference in the improvement of women’s empowerment. Saving service is significantly associated with women’s household decision-making, major decision-making in the domestic context, and availability of basic household needs. Microfinance services contribute to women’s socio-economic empowerment and their children’s education.
Fishing Community in Wetland Region of Bangladesh: Views from the Field Experiences of Hakaluki Haor
Authors: Ali Oakkas Mohammad , Islam Md. Fakrul
Published: February 2021

This study is a part of doctoral dissertation which basically observes the socio-economic condition of the artisanal fishing community of Hakaluki Haor in Bangladesh. The original study is exploratory in nature, and both qualitative and quantitative approaches have been used to attain the goals and objectives of the study. The main objective of the current article is to identify the present socio-demographic background of Hoar fishing community in Bangladesh. Data analysis has focused on the actual situation of the household of fishing community from the Haor perspective. The findings of the study have been categorized on the basis of five capitals (i.e., social, human, physical, financial and natural resources) that structure the conceptual framework of the study. It is shown that most of the fishing community in the Haor basin are living under the most unpleasant and vulnerable conditions in terms of income, food security, housing patterns, health and sanitation conditions. Other issues center around child marriage, family planning, and social relations among the dwellers of the community. Also, among the observed problems are decision making, power practice, participation in development activities, socio-economic position in education and local institutions.
Supply Chain and Economic Viability of Vanilla planifolia Andrew Production: A Case Study
Authors: Banda Ortiz Humberto , Garza Morales Rodolfo , Vázquez Trujillo Katia Vázquez Trujillo
Published: February 2021

Objectives: To characterize the supply chain of vanilla (Vanilla planifolia Andrew) inorder to detect areas which could be improved and to determine the economic viabilityof its production.Design/Methodology/Approach: The information was compiled through semi-structured interviews in a vanilla company. The Value Stream Mapping technique wasused to describe the supply chain. Additional databases were consulted in order toobtain information on the production and commercialization of vanilla. The economicviability of vanilla production was analyzed with IRR.Results: This case study had five phases in its supply chain. The IRR of cash flow inthe traditional and technological production systems were positive, although the IRR ofthe traditional system was greater even though it had lower production volumes.Study Limitations/Implications: It was observed that vanilla requires between 3 and 4years for its first harvest, independently of the production system, traditional ortechnological, which means that there are negative cash flow numbers during the firsttwo years in both systems, despite a positive IRR.Findings/Conclusions: The critical stage in the supply chain of the company studiedwas the production. The cash flow for the technological system was superior whencompared to the traditional system. However, the IRR for the technological system waslower, since the investment in shade cloth was not compensated by the discountedcash flows that could otherwise be obtained.
Protein Inputs of Animal Origin Used in the Substitution of Fish Meal in Aquaculture Feed
Authors: Godínez Siordia Daniel Enrique , Lorente-Adame Rogelia Guillermina , Ornelas- Luna Ricardo , Bernal-Ornelas Iván Hummel , Hinojosa-Larios José Ángel
Published: February 2021

Objective: To highlight some studies carried out with alternative protein sources frombyproducts of animal origin to replace fish meal (FM) in the nutrition of aquaculturespecies.Design/Methodology/Approach: A search for new protein sources of animal origin wascarried out and experimentally evaluated with species of aquaculture interest, employingan information search methodology through the analysis of metadata kept in databasesthroughout the World Wide Web.Results: Advantages and disadvantages of including byproduct flours of animal origin inthe diet of aquatic organisms are pointed out. However, for worldwide aquaculture it isessential to emphasize that this protein exchange should not affect aquatic ecosystemsbut rather mitigate the effects of environmental impacts and promote the sustainability ofaquaculture.Study Limitations/Implications: The results of incorporating flours of animal origin insubstitution of FM in the diets of aquaculture species are experimentally indicated, whilespecifying that there are no reports indicating the transcendence of such substitution incommercially balanced meals.Findings/conclusions: Each of the dietary alternatives described here works at certainnutritional levels, decreases costs and increases the digestibility index, allowing for 2better water quality by disposing less nitrogen into the aquatic environment, withoutsacrificing the quality of the diets or the energy content of the final products.
Yield estimation of forage oat (Avena sativa L.) Chihuahua variety: ruler and plate methods
Authors: Mendoza-Pedroza Sergio Iban , Sánchez-Espinoza Javier , Álvarez-Vázquez Perpetuo , Sosa-Montes Eliseo , Maldonado-Peralta M. Á. , Garay-Martínez Jonathan R.
Published: February 2021

Objetive: To analyze forage estimations with the direct method and the plant height.

Diseño/Metodología/Aproximación: The treatments were the plants age, assessed in a random block design, with three repetitions. Simple linear regressions were carried out and adjusted using the SPSS statistical software.

Resultados: The highest and lowest yields occurred at 105 and 30 days after sowing (DAS), with 5,412 and 783 kg DM ha-1, respectively. Height with the rule had a significant effect on forage production, with an R2 of 0.83. For each increase per cm the plants increased 56,134 kg DM ha-1. The height with the plate had an R2 of 0.97, so that 65.032 kg DM ha-1 are produced for each cm in height.

Limitaciones del estudio/implicaciones: None

Hallazgos/conclusiones: The forage accumulation in Avena sativa L., var. Chihuahua varied depending on the age of the plant. The heights calculated with the plate method, had greater reliability for the forage yield estimate, compared to the graduated rule method.
Analysis of the industrial quality of three sugarcane cultivars at “santa rosalía de la chontalpa” sugarcane mill
Authors: Córdova-Sánchez Samuel , Izquierdo-Hernández José , Salgado-García Sergio , Lagunes-Espinoza Luz del Carmen , Palma-López David Jesús , Peña-Cabriales Juan José , Bucio Galindo Adolfo
Published: February 2021

Objective: To evaluate the industrial quality of three sugarcane cultivars in a template cycle at the supply area of “Santa Rosalía de la Chontalpa” sugarcane mill.

Design / Methodology / Approach: An experiment was established under a factorial design 3x3 (3 cultivars: CP 72-2086, MEX 79-431 and MEX 69-290; x 3 sampling dates: 330, 390 and 450 DDS, Spanish equivalent for days after sowing) on an Eutric Fluvisol soil. In each plantation, a sample of 10 stems with three replications was collected to determine the industrial quality by polarimetry.

Results: The industrial quality of the evaluated cultivars only differed statistically in terms of the percentage of purity, MEX 79-431 was the one that presented the lowest value for this variable. At 450 DDS, the highest value was observed for °Brix (17.28), POL percentage (14.92), purity (86.44%). The values obtained in the present study for the quality of juice in the evaluated cultivars are within the range of the standard values established for Mexico.

Limitations / Implications: Polarimetry is still the method used by most of the sugar mills in Mexico, even if other more environmental-friendly methodologies exist.

Findings / Conclusions: The trend line that best fit to MEX 69-290 and MEX 79-431, for °Brix, POL and purity, was a linear polynomial and to CP 72-2086, a polynomial quadratic. Fresh stems and reducing sugars showed best fit with an inverse polynomial. °Brix presented strong and positive correlation with POL (R = 0.99**); and strong and negative with reducer sugars (R = -0.95**) and fresh stem humidity (R = -0.91**).
Characterization of the preferences towards jalapeño peppers from the perspective of the Sonoran consumers
Authors: Sánchez-Toledano Blanca Isabel , Camarena Gómez Dena María Jesús , Cuevas-Reyes Venancio , Salgado-Beltrán Lizbeth
Published: February 2021

Objective: To assess the Sonoran (Mexico) consumer perspective regard their buyinghabits, consumption and the attitudes and attributes they most valued from jalapeñopepper.Design / Methodology / Approach: The assessment took place in three phases. Thefirst consisted of the design of a questionnaire, the second its application to a sample ofn = 200 consumers and finally univariate (means and modes) and bivariate (Chi-square)analyzes on the obtained data.Results: The flavor is a key element in the consumption of jalapeño peppers. There is atendency towards frequent consumption, although the portions are measured since theyare usually less than 0.5 kg. It was identified that for the consumer it is important nodamage or browning is visible on the external appearance of the peppers, and that theyprefer peppers of a dark green color over another coloring. Specifically, there is awillingness to pay between $ 0.5 and $ 1.0 US per kilo. The frequent consumers ofjalapeño pepper are under 40 years old, accentuated in the 18 to 24 years old segment,with medium income level. In this segment, there is the preference for aroma andhotness (pungency) that the chili peppers have.Study limitations / implications: This study is limited to consumers from thenorthwestern region of Mexico. The obtained information provides guidelines to deepenthe knowledge of this product from their market perspective. The added- valuestrategies should be aimed to increase the external quality of the product.
Separation of Oil Emulsion with Dynamic Membrane with Surface Layer of Polystyrene
Authors:   Kazan (Volga region) Federal University, Fazullin D. D. , Mavrin G. V. ,   Kazan (Volga region) Federal University, Fazullina L. I. ,   Kazan (Volga region) Federal University
Published: February 2021

In this paper, we studied the parameters of the process of separation of oil emulsion using a dynamic membrane of ultrafiltration PTFEg-PSd. A polymer membrane with a dynamic layer of polystyrene particles with sizes from 55 to 72 nm was obtained on a substrate of hydrophilic polytetrafluoroethylene (PTFE). The results of scanning electron microscopy showed the formation of a layer of spherical polystyrene particles on the membrane surface. The properties of a dynamic membrane were studied: porosity, moisture capacity, and wettability. After applying the polystyrene layer, an increase in the hydrophobicity of the surface layer of the membrane was established. For membrane separation, a 1% oil emulsion was prepared by dispersing the carbonaceous oil. The retention capacity of membranes for oil products from 1% oil emulsion was 96.4%, with a specific productivity of 113 dm3/m2·h which is not inferior to the performance of a commercial UPM-100 ultrafiltration membrane. Particle sizes of the dispersed phase in a 1% oil emulsion are distributed in the range from 229 to 1476 nm, after separation of the emulsion by a dynamic membrane, oil particles with sizes from 134 to 236 nm were detected in the filtrate, which indicates the removal of the bulk of the dispersed phase from the emulsion by ultrafiltration membranes.
Petroleum Potential in the Center of Song Hong Basin of the Northern Continental Shelf Vietnam
Authors:   National University of Oil and Gas «Gubkin Universit, Thinh N. T.
Published: February 2021

The sedimentary basin Song Hong is one of the largest Cenozoic oil and gas bearing sedimentary basins, in which the center of the basin covers a large part. It elongates from block 105 to block 115. This article presents the geological structure, history of geological development, oil and gas potential and characteristics of reservoirs f the central basin, where the thickness of the basin deposits reaches more than 16 000 m.
Review of Applied and Promising Methods of Gas Dehydration
Authors:   Samara State Technical University, Ovchinnikov K. A. , Simakova E. A. ,   LLC “Arctic LNG 2”, Moscow
Published: February 2021

The removal of water from natural gas is one of the most effective methods widely used in pretreatment processes of the extracted fluid, necessary to prevent industrial problems such as corrosion and hydrate formation. In this article, the methods of natural gas drying are considered, the greatest attention is paid to absorption drying and modern innovations of this method, as the most common in the world practice.
Forecasting Efficiency of Acid Impact on the Basis of Construction of Mathematical Models Taking into Account the Technology and Used Composition
Authors:   LUKOIL-Engineering Limited PermNIPIneft Branch Office in Perm, Novikov V. A.
Published: February 2021

Acid treatment is one of the most studied methods of stimulation of inflow in carbonate reservoirs. Nevertheless, enterprises are faced with the problem of reducing the planned production rates of wells after such events, which is due to geological and technological reasons. Taking them into account when planning impact and predicting effectiveness is possible by analyzing actual production materials using mathematical statistics methods. In this paper, using the example of a oil field in the southern part of Perm region, the main factors that influence the efficiency of acid treatments are identified, a number of multidimensional models are obtained that take into account their mutual influence and allow determining the result of a geological and technical measure.
Resistance of Repaired Pipeline Transport Systems to Damage to Network Structure Elements
Authors:   Lugansk National University named after V. Dahl, Tararychkin I. A.
Published: February 2021

It is shown that the set of all linear elements of the system can be divided into 5 subsets G1...G5, depending on which specific nodes a particular pipeline connects. It was established that the greatest influence on the growth of resistance index values is exerted by the effect of an increase in the quantitative composition of the subset G1, and the smallest one is the increase in the composition of the subset G5. In this case, the degree of influence decreases with the transition from the elements of the subset G1 to G5. During repair operations, individual fragments or pipelines are usually excluded from the current system. Such structural applications can lead to a situation where accidental damage to several or even one pipeline will lead to disconnection of some consumers from the source. The specified feature should be taken into account when planning, preparing and conducting repair work. The existence of rational and irrational network structures, characterized by the greatest and least resistance to progressive damage, is proved. The planning and organization of repair work of pipeline transport systems is recommended to be carried out with a preliminary assessment of their resistance to progressive damage and taking into account the possibility of using rational network structures.
Development and Testing of the Methodology for Assessing Features of the Operation of Long-Acting Comparison Electrodes in Electrochemical Protection Systems for Gas Pipelines in Frozen Soils
Authors:   Branch of Gazprom VNIIGAZ LLC in Ukhta, Shkulov S. A. , Shishkin I. V. ,   Branch of Gazprom VNIIGAZ LLC in Ukhta, Kuzbozhev A. S. ,   Branch of Gazprom VNIIGAZ LLC in Ukhta, Birillo I. N. ,   Branch of Gazprom VNIIGAZ LLC in Ukhta, Kuzbozhev P. A. ,   Branch of Gazprom VNIIGAZ LLC in Ukhta
Published: February 2021

Current problem of monitoring parameters of the electrochemical protection of gas pipelines is to clarify parameters of long-acting comparison electrodes on frozen soils. The problem is the violation of the electrolytic contact between the long-acting reference electrode and the built-in potential sensor during freezing of the surrounding soil, which leads to a distortion of the data obtained or the impossibility of taking them. The article describes the study of the main operational parameters of long-acting comparison electrodes in permafrost, freezing and thawing soils.
Generalized Indicator of Efficiency of Use of Pumping Equipment
Authors:   Omsk State Technical University, Shalai V. V. , Myznikov M. O. ,   Omsk State Technical University, Kononova M. I. ,   Omsk State Technical University, Aiduldinov D.M. ,   Omsk State Technical University
Published: February 2021

The article is devoted to assessing the efficiency of operation of trunk oil pipelines. Based on the analysis, a generalized indicator of the efficiency of use of pumping equipment was obtained, which allows us to predict the ef-ficiency of operation of pumping equipment as a whole on the technologi-cal section of the pipeline. The article also presents the main components of the indicators.
O manuseio de arma de fogo: estado da arte e perspectivas aplicadas na avaliação psicológica
Authors: Hasbun Astrid Sharon Pontes , Estevam Ionara Dantas , Formiga Nilton Soares
Published: February 2021

A violência tem feito parte da história da maioria dos lugares no mundo atualmente e o Brasil segue a mesma tendência. Essa realidade faz com que algumas pessoas procurem se armar por se sentirem inseguras e busquem a arma de fogo como uma forma de proteção. As legislações que regulamentam a área de armamento vêm ao longo dos anos buscando um maior controle, entretanto a partir de 2019 é possível perceber uma abertura e certo incentivo ao uso de armas de fogo. E embora o posicionamento sobre possuir uma arma como forma de garantir segurança traga divergência de opiniões, esse fato tem contribuído para o aumento da procura pela obtenção de registro e porte de arma de fogo no Brasil. Dentre as avaliações psicológicas compulsórias mais realizadas no Brasil está a avaliação psicológica para porte de arma que tem como finalidade verificar se a pessoa possui características compatíveis para o trabalho armado ou posse e manuseio de arma de fogo. Contudo, a área apresenta ainda muitas fragilidades como: estudos na área ainda são escassos, inexistência de instrumentos sugeridos pela Instrução normativa da Polícia Federal nº 78/2014 para avaliar determinados construtos psicológicos, capacitação dos profissionais para aplicação, correção e análise dos resultados, elaboração de documentos, remuneração e entrevista devolutiva ao candidato. É necessário que o profissional esteja devidamente capacitado, atualizado e aja dentro dos preceitos éticos elencados pela regulamentação da área para que suas conclusões sejam cientificamente embasadas e tragam segurança para a sua prática profissional.
Estratégias no estágio curricular em Psicologia durante a pandemia: caminhos até a proposta nacional
Authors: Pala Ágnes Cristina da Silva , Accetta Marcello Furst de Freitas
Published: February 2021

O presente trabalho apresenta o percurso de construção de estratégias e a execução da proposta de estágio em Psicologia de forma remota, desenvolvida ao longo do primeiro semestre de 2020, em uma universidade da cidade do Rio de Janeiro, por conta da pandemia de COVID-19. Com abordagem qualitativa, através de pesquisa documental nos registros das reuniões desenvolvidas com gestão acadêmica, docentes supervisores e discentes, dos documentos oficiais publicados pelo Ministério da Educação, Conselho Nacional de Educação, Conselho Nacional de Saúde, Conselho Federal de Psicologia e Associação Brasileira de Ensino de Psicologia, propomos reflexões e expomos tensões ético-políticas no contexto inicial da pandemia e suas interfaces com o ensino. A construção da proposta para a referida universidade foi inspirada nas Diretrizes Curriculares Nacionais dos cursos de graduação em Psicologia e nos Princípios Fundamentais do Código de Ética do Profissional Psicólogo no que tange outros fazeres profissionais como elaboração de cartilhas e ebooks, montagem de roteiro e gravação de podcast, rodas de conversa. Concluímos que a adaptação dos fazeres e a construção de novos fazeres para o estágio curricular no formato remoto, elaborados pelos autores, passaram a ser, em sua grande maioria, recomendadas em cartilha divulgada em agosto/2020 pela Associação Brasileira de Ensino em Psicologia e pelo Conselho Federal de Psicologia como orientação de práticas de estágio para o segundo semestre de 2020 ou enquanto durar o estado de excepcionalidade da pandemia.
Acidentes de trabalho em segmentos do agronegócio paranaense
Authors: Ruths Jéssica Cristina , Souza Marcos Paulo Rodrigues de , Staduto Jefferson Andronio Ramundo , Schmidt Carla Maria
Published: February 2021

Acidentes de trabalho se vinculam a diversificação dos processos produtivos e ao perfil de produção, logo pesquisas sobre o tema devem considerar as especificidades das atividades envolvidas. Apesar do número crescente de trabalhos sobre a temática, ainda há carência de estudos que avaliem especificamente o setor do agronegócio, portanto, objetivou-se analisar os acidentes de trabalho nos segmentos de insumos, primário e agroindustrial do agronegócio, notificados no Paraná, no período de 2012 a 2017. Desenvolveu-se um estudo epidemiológico, descritivo e quantitativo, com base nas Comunicações de Acidentes de Trabalho (CAT), registradas no Instituto Nacional de Seguridade Social (INSS). Foram comunicadas 51.071 CAT relacionadas ao agronegócio no Estado, a taxa de incidência foi de 72,73 acidentes a cada mil trabalhadores. No período estudado, houve diminuição do número de CAT em todos os segmentos analisados. Destacaram-se os acidentes de trabalho no abate de suínos, aves e outros pequenos animais, foram 12.923 CAT registadas. A ocupação mais vulnerável foi a de alimentador de linha de produção, com 10.230 acidentes. A parte do corpo mais atingida foram os dedos 15.907 (31,15%), e, dentre os agentes causadores, as facas e fações estavam entre os principais, causando 4.782 (9,36%) lesões. Este estudo reforça a importância da análise dos acidentes de trabalho no agronegócio paranaense, de modo que, espera-se contribuir com evidências que auxiliem na prevenção destes agravos nos segmentos analisados.
Qualidade da semeadura de soja em função da velocidade do trator-semeadora e disco dosador de sementes
Authors: Franco Felipe José Barbosa , Compagnon Ariel Muncio , Pereira Filho Walter José , Jesus Mateus Vieira de , Lemes Luíla Macêdo , Rosa Neto Nilson Dias
Published: February 2021

As semeadoras de precisão são submetidas a diversas condições de trabalho, que podem causar variação na distribuição espacial de sementes na linha de semeadura. O objetivo deste trabalho foi avaliar a qualidade da semeadura da cultura da soja em função da velocidade de avanço do trator-semeadora e do disco dosador de sementes, em plantio direto. O delineamento experimental foi o inteiramente casualizado, com 10 tratamentos em esquema fatorial 5x2, compostos por cinco velocidades de avanço do trator-semeadora-adubadora (3, 4, 5, 6 e 7 km h-1) e dois discos dosadores de sementes (40 e 108 alvéolos), com cinco repetições por tratamento. Foram avaliados o número de dias para emergência, profundidade de semeadura, estande inicial e final, distribuição longitudinal de plantas, altura de plantas e inserção da primeira vagem, produtividade e massa de mil grãos. O incremento da velocidade de semeadura influenciou na redução da porcentagem de espaçamentos aceitáveis, e consequentemente, aumentou a porcentagem de espaçamentos duplos e falhos. Entretanto, as velocidades de deslocamento não influenciaram na produtividade e massa de mil grãos, produzindo média de 5017,46 kg ha-1 e 168,89 g, respectivamente. O disco com 108 alvéolos apresentou maior porcentagem de espaçamentos aceitáveis e maior massa de mil grãos, porém não influenciando na produtividade de grãos. Nas condições estudadas, é indicado a velocidade de 7 km h-1 e o disco de 108 alvéolos, visando uma melhor capacidade de campo operacional.
An Unexpected Acute Abdomen Case: Torsion of a Wandering Spleen Treated with Splenopexy
Authors: Ilgar Mehtap , Ünlü Serkan , Akçiçek Mehmet , Demirtaş Gökhan
Published: February 2021

Wandering spleen is a rare condition that results from the absence or looseness of the hanging ligaments that keep the spleen in its normal anatomical location. It can lead to acute abdomen with torsion and infarction of the splenic pedicle. In this article, we present a patient who came to the hospital with a grievance of severe abdominal pain and was diagnosed with a torsion of wandering spleen. The patient was treated with splenopexy. Although it is a rare case, wandering spleen should also be think of in the differential diagnosis of acute abdomen.
DELAYED NEUROPSYCHIATRIC SYNDROME FOLLOWING CARBON MONOXIDE POISONING: REPORT OF A RARE CASE WITH RESPONSE TO TREATMENT
Authors: Önder Özlem , Kılıçaslan Rıfat
Published: February 2021

Carbon monoxide (CO) is a colorless, odorless, and non-irritant gas that is lighter than air. Carbon monoxide intoxication is the leading factor of deaths due to toxications. Besides, it is an important health problem due to its morbidities related to the delayed neurological and/or psychiatric syndromes that occur after the acute recovery period. Besides behavioral problems, mood and personality changes, parkinsonism, motor deficits, and dementia syndrome are the most common clinical pictures. Compared with hyperbaric oxygen, which has been proven effective in the acute period in CO intoxication, there is no treatment with definitely proven efficacy for the delayed neuropsychiatric picture. In this paper, a case of CO intoxication followed with a delayed neuropsychiatric syndrome is presented in the light of the literature.
Nailbed debridement of the finger degloving injury: two case reports
Authors: Kashiyama Kazuya
Published: February 2021

Degloving injury is a serious trauma of the fingers. It is difficult to establish an adequate extent of debridement at the time of initial surgery. Therefore, additional surgery for necrotic areas related to circulatory failure is required in many cases. In this study, we performed replantation for degloving injury of 3 fingers in 2 patients, and obtained findings regarding nailbed debridement on initial surgery. Considering nailbed hemodynamics, when performing replantation for degloving injury, in which the nailbed remains, being adhered to the distal phalanx, but not to an amputated finger, debridement of the nailbed and distal phalanx region to which the nailbed is adhered to on initial surgery may facilitate the avoidance of unnecessary surgery, shortening the treatment period and leading to early rehabilitation.
VARIOUS CHARACTERIZATIONS FOR QUATERNIONIC MANNHEIM CURVES IN THREE-DIMENSIONAL EUCLIDEAN SPACE
Authors: HAS Aykut , YILMAZ Beyhan
Published: February 2021

In this article, quaternionic curves in 3-dimensional Euclidean space have examined. Firstly, algebraic properties of quaternions and their basic definitions and theorems are given. Later, some characterizations of the quaternionic Mannheim curves in the 3-dimensional Euclidean space have obtained.
Recent Advances in Silent Gene Cluster Activation in Streptomyces
Authors: Liu Zhenyu , Zhao Yatong , Huang Chaoqun , Luo Yunzi
Published: February 2021

Natural products (NPs) are critical sources of drug molecules for decades. About two-thirds of natural antibiotics are produced by Streptomyces. Streptomyces have a large number of secondary metabolite biosynthetic gene clusters (SM-BGCs) that may encode NPs. However, most of these BGCs are silent under standard laboratory conditions. Hence, activation of these silent BGCs is essential to current natural products discovery research. In this review, we described the commonly used strategies for silent BGC activation in Streptomyces from two aspects. One focused on the strategies applied in heterologous host, including methods to clone and reconstruct BGCs along with advances in chassis engineering; the other focused on methods applied in native host which includes engineering of promoters, regulatory factors, and ribosomes. With the metabolic network being elucidated more comprehensively and methods optimized more high-thoroughly, the discovery of NPs will be greatly accelerated.
Chitosan-Based Functional Materials for Skin Wound Repair: Mechanisms and Applications
Authors: Feng Peipei , Luo Yang , Ke Chunhai , Qiu Haofeng , Wang Wei , Zhu Yabin , Hou Ruixia , Xu Long , Wu Songze
Published: February 2021

Skin wounds not only cause physical pain for patients but also are an economic burden for society. It is necessary to seek out an efficient approach to promote skin repair. Hydrogels are considered effective wound dressings. They possess many unique properties like biocompatibility, biodegradability, high water uptake and retention etc., so that they are promising candidate materials for wound healing. Chitosan is a polymeric biomaterial obtained by the deacetylation of chitin. With the properties of easy acquisition, antibacterial and hemostatic activity, and the ability to promote skin regeneration, hydrogel-like functional wound dressings (represented by chitosan and its derivatives) have received extensive attentions for their effectiveness and mechanisms in promoting skin wound repair. In this review, we extensively discussed the mechanisms with which chitosan-based functional materials promote hemostasis, anti-inflammation, proliferation of granulation in wound repair. We also provided the latest information about the applications of such materials in wound treatment. In addition, we summarized the methods to enhance the advantages and maintain the intrinsic nature of chitosan via incorporating other chemical components, active biomolecules and other substances into the hydrogels.
Monitoring Neutral Axis Position Using Monthly Sample Residuals as Estimated From a Data Mining Model
Authors: Aloupis Christos , Shenton Harry W. , Chajes Michael J.
Published: February 2021

Structural Health Monitoring (SHM) has enabled the condition of large structures, like bridges, to be evaluated in real time. In order to monitor behavioral changes, it is essential to identify parameters of the structure that are sensitive enough to capture damage as it develops while being stable enough during ambient behavior of the structure. Research has shown that monitoring the neutral axis (N.A.) position satisfies the first criterion of sensitivity; however, monitoring N.A. location is challenging because its position is affected by the loads applied to the structure. The motivation behind this research comes from the greater than expected impact of various load characteristics on observed N.A. location. This paper develops an indirect way to estimate the characteristics of vehicular loads (magnitude and lateral position of the load) and uses a data mining approach to predict the expected location of the N.A. Instead of monitoring the behavior of the N.A., in the proposed method the residuals between the monitored and predicted N.A. location are monitored. Using actual SHM data collected from a cable-stayed bridge, over a 2-year period, the paper presents the steps to be followed for creating a data mining model to predict N.A. location, the use of monthly sample residuals of N.A. to capture behavioral changes, the ability of the method to distinguish between changes in the load characteristics from behavioral changes of the structure (e.g. change in response due to cracking, bearings becoming frozen, cables losing tension, etc.), and the high sensitivity of the method that allows capturing of minor changes.