bluuebunny/crossref_metadata_2025 huggingface dataset:
Автономные стратегии компенсаторного формирования иноязычной лексической компетенции у студентов технических вузов
Authors: Артеменко О.А. , Журавлева И.В. , Максимова Г.А.
Published: March 2023

Рассмотрены отдельные аспекты формирования иноязычной лексической компетенции в техническом вузе. Выделены: объем словарных единиц иностранного языка, необходимый для понимания аутентичных и продуцирования собственных устных и письменных текстов; пути преодоления неравномерности школьной подготовки студентов по иностранному языку в целях повышения уровня их лексической компетенции. Представлены педагогические предпосылки и перспективы использования автономных стратегий компенсаторного усвоения иноязычной лексики, даются определения данного понятия и их классификация. Подчеркивается целесообразность изучения психологических основ мнемотехнических приемов и стратегий, а также внедрения методов, стимулирующих обучающихся их использовать. Приводятся возможные схемы временных интервалов повторения лексических единиц для предотвращения их забывания.

Some aspects of foreign language lexical competence formation in a technical university are considered. There are singled out: the volume of vocabulary units of a foreign language, necessary for understanding authentic and producing one’s own oral and written texts; ways to overcome the uneven school training of students in a foreign language in order to increase the level of their lexical competence. Pedagogical prerequisites and prospects for the use of autonomous strategies for the compensatory assimilation of foreign vocabulary are presented, defi nitions of this concept and their classifi cation are given. The expediency of studying the psychological foundations of mnemonic techniques and strategies, as well as the introduction of methods that encourage students to use them, is emphasized. Possible schemes of time intervals for the lexical units repetition are given to prevent their forgetting.
Data Literacy in the Social Sciences: Findings from a Local Study on Teaching with Quantitative Data in Undergraduate Courses
Authors: Condon Patricia , Exline Eleta , Buckley Louise
Published: March 2023

Objective – The University of New Hampshire (UNH) Library conducted an exploratory study of the pedagogical practices of social science instructors at UNH who teach using quantitative data in undergraduate courses. This study is connected to a suite of parallel studies at other higher education institutions that was designed and coordinated by Ithaka S+R.
The four aims of this study were to explore the ways in which instructors teach and engage undergraduates in the social sciences using quantitative data; understand the support needs of these instructors; develop actionable recommendations for campus stakeholders; and identify opportunities for the development of resources, services, or activities in the library to support the use of quantitative data in the classroom.
Methods – For the UNH study, the research team recruited eleven participants through convenience sampling for one-on-one, semi-structured interviews. The study sample included lecturers, assistant professors, associate professors, and full professors across seven social science disciplines from the Durham and Manchester campuses.
Results – Courses using data provide a unique opportunity for students to gain experience by working with hands-on examples. The two overarching themes identified speak to both the motivations of instructors who teach with data and the challenges and opportunities they face: teaching with data for data literacy and scientific literacy and teaching with data for statistical, data, and tools skill building.
Conclusion – Data literacy is an important set of competencies in part because of the quality and quantity of data students encounter; they need to have the ability to critically evaluate data, methods, and claims. This study directed attention to an area that had not previously been examined at UNH and is an important first step toward creating greater awareness and community of practice for social science instructors teaching with data. The UNH Library offers research data services and is exploring new ways of supporting data literacy. UNH has opportunities to create additional supports for instructors and students that could improve student learning outcomes. Such efforts may require cross-college or cross-department coordination as well as administrative support.
Oral Literature of the Batak Society "Si Jonaha" and its Implications in Teaching Materials for Students of SMP Negeri 4 Satu Atap Pulau Rakyat Academic Year 2022-2023
Authors: Purba Nurhaidah , Sutikno
Published: March 2023

Oral literature or also called traditional literature has a fairly close relationship with a person or society. Especially in modern times like today. Literature not only has a close relationship with the community where the author or his audience is present, but he is also involved in the upheavals in that society. The purpose of this study is to describe the relationship between knowledge of the structure of Si Jonaha's oral story with educational values ​​or teaching materials, and to describe the elements that make up Si Jonaha's oral story. And to describe the implications of the relationship between educational values ​​and the elements that build Si Jonaha's oral story as teaching material for students of SMP Negeri 4 One Roof Pulau Rakyat. From the results of the research obtained, it can be seen that in Si Jonaha's oral story there are very many educational values ​​contained in it, this proves that descriptively-collaratively there is a relationship between Si Jonaha's oral story and educational values. The implications of the values ​​and elements contained in Si Jonaha's oral literature which can be used as teaching materials for students of SMP Negeri 4 Satu Atap Pulau Rakyat are theoretically and practically. The implications of these educational elements and values ​​are contained in the planning, implementation, and assessment of learning. Based on the results of the study, the educational value contained in Si Jonaha's oral story is in accordance with the educational value in the syllabus and lesson plans and which is very relevant to Indonesian Language Learning at SMP Negeri 4 Satu Atap Pulau Rakyat.
The Effectiveness of Understanding of Indonesian Vocabulary and Grammar Vocabulary on the Ability to Write Narrative Texts for Grade VI Students of SD Negeri 143 Barbaran, Mandailing Natal Regency Academic Year 2022-2023
Authors: Husin Asmar , Sutikno
Published: March 2023

In providing information to the reader, of course, the ability and mastery of vocabulary are needed, in order to be able to use good vocabulary and follow the existing grammar in writing the presentation so that the reader better understands the written description. For this reason, the formulation of the problem in this study is there any influence of mastery of Indonesian vocabulary and grammar on the ability to write narrative texts for sixth grade students of SD Negeri 143 Barbaran, Mandailing Natal Regency? The purpose of the study was to determine whether or not there was an influence of mastery of Indonesian vocabulary and grammar on the ability to write narrative texts of sixth graders at SD Negeri 143 Barbaran, Mandailing Natal Regency. Correlational research is a quantitative research type of ex-post facto research. Ex-post facto research is research in which independent variables have occurred when the researcher begins by observing the dependent variable in a study. The sample in this study were taken as many as 23 students VI of SD Negeri 143 Barbaran, Mandailing Natal Regency. Data collection techniques in this study were carried out through tests. This study uses data analysis techniques in the form of t-test techniques or hypothesis testing. The results show that there is an influence of mastery of Indonesian vocabulary and grammar on the ability to write narrative texts of sixth grade students of SD Negeri 143 Barbaran, Mandailing Natal Regency, with i
Development of Reading and Writing Competence for Indonesian Language Subjects Using Flash Card Media in Class VIII SMP Negeri 1Pulau Rakyat Academic Year 2022-2023
Authors: Arini Priti , Sutikno
Published: March 2023

This research is motivated by the ability to read and write to be something that is very difficult for students of class VIII SMP Negeri 1 Pulau Rakyat. One of the learning media that is full of games that lead to student activity that can be done by Indonesian teachers is the use of flashcard media. Flashcard media can be in the form of picture cards under which there are writings that are designed in attractive colors so that this will please the child, so the child will be motivated to learn. These problems are discussed through classroom action research which is carried out through 2 cycles with each cycle the stages are planning, action, observation and reflection. Research data obtained through observation in class and tests. The results showed that there was an increase in the reading and writing ability of class VIII students of SMP Negeri 1 Pulau Rakyat using flash card media, it was seen that students' reading abilities increased each cycle, namely in the pre-cycle there were 8 students or 42%, there was an increase in the first cycle, namely 12 students or 63 % and at the end of the second cycle, 17 students or 89% completed. Likewise, students' writing skills have increased in each cycle where in the pre-cycle the completeness reached 9 students or 47% an increase in the first cycle there were 13 students or 69%, and in the second cycle there was an increase of 17 students or 90%. This result has exceeded the set indicator, which is 80%. Likewise, student activity increased where in the first cycle there were 10 students or 52% and after improvements were made in the second cycle, 16 students or 86% were achieved. These results have reached the specified indicators.
Políticas públicas de crédito rural para cadeia produtiva da pesca e aquicultura no Brasil e região Norte, em período recente (Paper 392)
Authors: Farias Raimundo Carlos Moraes , Filgueiras Gisalda Carvalho , De Almeida Oriana Trindade , Mathis Armin
Published: March 2023

O setor pesqueiro e aquícola no Brasil possui grande potencial de desenvolvimento devido suas características - uma extensa costa litorânea e grandes bacias hidrográficas - proporcionando a exploração da pesca extrativa tanto marinha quanto continental. Adicionalmente, a abundância de água doce e terras, mais mão de obra relativamente baratas, estimulam a aquicultura. Soma-se a este cenário um mercado consumidor crescente. O objetivo deste trabalho é averiguar se a concessão de crédito rural impacta no aumento da produção de pescado no Brasil e na Região Norte, no período de janeiro de 2013 a janeiro de 2018. Para tanto, utilizou-se como base de informações os dados do Banco Central do Brasil (BCB), a partir do Sistema de Operações do Crédito Rural e do Proagro – SICOR, que é o sistema que cadastra todas as operações de crédito rural e os enquadramentos no Programa de Garantia da Atividade Agropecuária. Em termos de resultados, a pesquisa apontou a concessão de um crédito crescente para as atividades em análise, bem como um aumento da produção aquícola nas duas regiões, todavia, outras ações devem ser implementadas para dinamizar de forma definitiva a atividade, visto a crescente demanda por proteína animal e melhor segurança alimentar da população local.Palavras-chave: Crédito Rural. Aquicultura. Pesca. PROAGRO.
Immunohistochemical approach to obesity disease in terms of expression levels of glutathione s-transferase (sigma, zeta, theta) isozymes
Authors: DAVUDOV Mahammad , BULUŞ Hakan , DİRİCAN Onur , KAYGIN Pınar , GÜLER ŞİMŞEK Gülçin , YILMAZ SARIALTIN Sezen , GÜRBÜZ Fatıma Nurdan , OĞUZTÜZÜN Serpil
Published: March 2023

Objectives: Obesity is a complex multifactorial disease with recently increasing prevalence and incidence. Several studies have been conducted to explain the ethiology, pathophysiology, epidemiology, molecular and genetic mechanisms, and effective treatments of obesity. Glutathione S-transferase (GST) S1, GSTZ1, and GSTT1 are essential enzymes for oxidative stress and metabolism-related disorders. For this purpose, we aimed to reveal the role of GSTS1, GSTZ1, and GSTT1 in obesity.
Methods: The gastric tissue samples were taken from the patients diagnosed with obesity who underwent bariatric surgery in Ankara Keçiören Training and Research Hospital General Surgery Clinic between 2017 and 2019. Immunostaining was performed on paraffin-embedded tissues to evaluate GSTS1, GSTZ1, and GSTT1 expressions. Laboratory data of the patients were recorded. All the results were analyzed statistically.
Results: Weak GSTS1 expression was observed in 38.1% of tissues and moderate in 6.3%. 37.3% of the tissues presented weak GSTZ1 expression, and 11 (8.7%) displayed moderate. There were weak GSTT1 expressions in 7.1% of the tissues and moderate 0.8% of them. A positive and statistically significant correlation was observed between GSTS1 and GSTT1 expression levels ((r)=0.028, p = 0.010; p < 0.05). There were no significant differences between expression levels and gender, age, comorbidities, and medication usage (p > 0.05).
Conclusions: GSTs, in particular GSTS1, GSTT1, and GSTZ1, might contribute to molecular mechanisms and the progression of obesity. In our study, GSTS1, GSTT1, and GSTZ1 were found to be moderately expressed in gastric tissues taken from obese patients. However, new studies using more samples and advanced techniques are needed to elucidate the relationship.
El caso del niño de Dabeiba, una aproximación a las prácticas funerarias del noroccidente de Suramérica en tiempos prehispánicos desde la perspectiva tafonómica
Authors: Cadena Duarte Bibiana Andrea , Pulgarín Montoya Eliana
Published: March 2023

Los contextos funerarios del noroccidente de Suramérica suelen tener restos humanos con un alto grado de deterioro y perturbación, lo cual ha representado un desafío en el aprovechamiento de estos como fuente de información del pasado. Dadas estas circunstancias, este trabajo quiere exponer las virtudes de la perspectiva tafonómica en el abordaje de contextos funerarios complejos y en el análisis de restos óseos, por lo que se toma como referente el caso de un túmulo funerario excavado recientemente en la cordillera occidental colombiana en el municipio de Dabeiba. Por medio del reconocimiento del proceso de formación del sitio y de los procesos tafonómicos a los que estuvieron sujetos los restos humanos de un infante, se obtuvo información empírica que ayudó a establecer parte de los tratamientos que dieron las poblaciones prehispánicas a sus muertos y de los eventos posteriores a la inhumación relacionados con el saqueo de la tumba, lo que permitió responder al reto que representa el abordaje de estos contextos complejos. Es así como se propone este abordaje como una forma de resaltar el gran potencial de los restos humanos antiguos como una fuente de información que contribuye a la reconstrucción del pasado prehispánico de esta región.
Immersive Technologies in Higher Education
Authors: Davydova Dayana , Gil'vanov Rinat , Kukushkina Yana , Romanova Irina
Published: March 2023

Purpose: To study the impact of intensive technologies on modern education; the analysis of virtual, augmented and mixed realities. Methods: Comparison of traditional education and education using immersive technologies and analysis of literature devoted to the research subject. Results: The importance of immersive technologies in higher education, allowing to expand the possibilities of remote interaction between people, is revealed. Practical significance: The possibility of using immersive technologies in educational environment for the purpose of educational material visualization is shown.
Hydraulic Hits in Penstocks with Above-Ground Laying
Authors: Kapinos Ol'ga , Tvardovskaya Nadezhda
Published: March 2023

To determine the factors having the greatest impact on the risk of occurrence of water hammers in above-ground installation of pipelines, typical of permafrost areas. Determine the velocities of shock wave front propagation in steel pipes for different types of steel pipes. To calculate parameters of possible water hammer depending on pipeline wall thickness. Methods: Method of characteristics used for solution of differential equations of unsteady motion of liquid is the basis of calculation model for determination of flow parameters at occurrence of water hammer. Results: On the basis of the calculations carried out in the article the diagrams of pressure changes in the pressure pipeline made of steel pipes are analysed. The influence of speed of propagation of water hammer wave and speed of steady movement of a liquid flow on character of flow of an unsteady process and size of pressure at water hammer in the pressure pipeline in above-ground laying is estimated. The use of measures to prevent water hammers, including combined ones, with the purpose of increasing their reliability is much cheaper than the replacement of damaged pipes and equipment, elimination of washouts by leaking water and loss of drinking water. Practical significance: In permafrost conditions, many factors complicate construction and operation of pressure hydrotransport systems. Elimination of consequences of emergency situations accompanied by water leakage is difficult in harsh climatic conditions, and thermal impact on soils is not always avoidable. Therefore when designing new pressure systems and reconstructing existing ones it is necessary to take into account possible unsteady processes in pressure pipes.
Power relations in dating relationships: A phenomenological study of violence in university students in Samarinda City
Authors: Widyananda Ade Juni , Ashfaq Asia
Published: March 2023

In 2022, cases of violence against women and children in East Kalimantan Province increased by 315 cases in just four months. Samarinda City is in first place for cases of violence against women and children in East Kalimantan Province, with 18 victims being students. This study focuses on the experiences and impacts of violence experienced by female students in Samarinda City as victims of violence in dating relationships. This type of research is qualitative research with a phenomenological approach. This study employed Michel Foucault’s power relations theory. Data acquisition was carried out through in-depth interviews. The data was then processed using the Creswell method. This study found that patriarchal culture is still extremely strong, making the perpetrators believe that as men, they must be brave and dominant in a dating relationship to be able to maintain power and control over their partners. Victims of dating violence are willing to do whatever their partner requests in the hope that it will make their partner happier and love them more. This study concludes that the impact of violence on victims can take the form of verbal violence, physical violence, or psychological disturbances, requiring victims to seek medical assistance from a psychiatrist to help deal with mental disorders and trauma.
Contrast-enhanced ultrasound for hepatocellular carcinoma detection and diagnosis in the context of nonalcoholic fatty liver disease
Authors: King Kevin G. , Depetris Jena , Patel Maitraya K. , Raman Steven S. , Lu David S.
Published: March 2023

The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide and is projected to become a major etiology of cirrhosis and hepatocellular carcinoma (HCC). HCC occurs more commonly in NAFLD patients who develop cirrhosis, though HCC is known to occur in the setting of noncirrhotic NAFLD as well. This is of particular importance given that the American College of Radiology (ACR) CT/MRI Liver Reporting and Data System (LI-RADS) algorithm may only be applied to a certain population of patients, and this population does not include those with noncirrhotic NAFLD. Conventional ultrasound (US) has long been in use for HCC surveillance, but contrast-enhanced US (CEUS) is a relatively newer modality, growing in use for assessment of liver lesions, and its use in HCC diagnosis has been formalized with CEUS LI-RADS. The use of US and CEUS in the assessment of liver lesions in NAFLD patients involves the consideration of certain particular nuances, and familiarity with these considerations will continue increasing in importance as the disease becomes more common.
Lipofuscin as the Main Driving Force of Current Age-Related Disease: Justification and Strategies for Removal
Authors: Renteln Michael
Published: March 2023

Lipofuscin is indigestible garbage that accumulates in the autophagic vesicles and cytosol of post-mitotic cells with age. Drs. Brunk and Terman postulated that lipofuscin accumulation is the main or at least a major driving factor in aging. They even posited that the evolution of memory is the reason why we get lipofuscin at all, as stable synaptic connections must be maintained over time, meaning that the somas of neurons must also remain in the same locale. In other words, they cannot dilute out their garbage over time through cell division. Mechanistically, their position certainly makes sense given that rendering a large percentage of a post-mitotic cell’s lysosomes useless must almost certainly negatively affect that cell and the surrounding microenvironment. Here, I explore the possibility that the accumulation of lipofuscin to some extent underlies all other categories of age-related damage as defined by Dr. Aubrey de Grey. I do not think that lipofuscin removal will reverse/prevent all forms of aging, just the major component facing us currently. In this piece, I will review what is known about lipofuscin accumulation from evolutionary and mechanistic standpoints and discuss ways of removing it from non-dividing (or slowly-dividing) cells.
Letter Migrations between Words in Reading Aloud Can Result Either from an Impairment in Orthographic Input or in Phono-Logical Output
Authors: Toledano Liora , Friedmann Naama
Published: March 2023

Abstract: Letter migrations between words in reading aloud (e.g., reading "cane love" as "lane love" or "lane cove") are known to result from a deficit in the visual-orthographic analysis and characterize attentional dyslexia. In spontaneous speech, individuals with impairment in the phonological output buffer may show migrations of phonemes between words. The purpose of this study was to examine whether migrations between words in reading aloud can also result from a deficit in the phonological output buffer, to explore the characteristics of migrations resulting from orthographic input and from phonological output deficits, and to examine methods to distinguish these two sources. Using tasks of reading aloud of 92-182 word pairs, we identified 18 adults and adolescents with developmental dyslexia who made between-word letter migrations in reading aloud, significantly more than age-matched controls (372 adults and 26 7th-graders). To distinguish between orthographic-input and phonological-output sources for these migrations, we administered a test assessing orthographic-input without spoken-output (written-semantic-decision on 140 migratable word pairs) and a test of repetition of 36 auditorily-presented migratable word pairs, assessing spoken output without orthographic-input (and word span tests). These tests indicated that the migrations of ten of the participants with dyslexia resulted from an orthographic-input deficit, and for the other eight participants, migrations resulted from a phonological-output deficit. We identified several differences between the two types of between-word errors: first, whereas the individuals with attentional dyslexia made omissions of a letter that appeared in the same position in the two words, the phonological output buffer group did not make such omissions. In addition, the groups differed in the origin of migration: orthographic input migrations involve letters that are orthographically adjacent, whereas phonological output migrations involve phonemes that have just been spoken or that are prepared together in the phonological buffer for production. This was manifested in that migrations from the line below and from two lines above occurred only in the orthographic input deficit group, and migrations occurred from a word vertically close to the target in the orthographic input group but from a word that has just been spoken (placed diagonally to the target) in the phonological output group. This study thus indicates that between-word migrations in reading-aloud can result not only from attentional dyslexia, but also from a phonological output buffer deficit, and offers ways to distinguish between the two.
Vector Competence of Aedes albopictus for Yellow Fever Virus: Risk of Reemergence of Urban Yellow Fever in Brazil
Authors: Damasceno Caldeira Rossela , Neto Joaquim Pinto Nunes , Aragão Carine Fortes , Freitas Maria Nazaré Oliveira , Ferreira Milene Silveira , Castro Paulo Henrique Gomes de , Dias Daniel Damous , Araújo Pedro Arthur da Silva , Brandão Roberto Carlos Feitosa , Nunes Bruno Tardelli Diniz , Silva Eliana Vieira Pinto da , Martins Lívia Caricio , Vasconcelos Pedro Fernando da Costa , Cruz Ana Cecília Ribeiro
Published: March 2023

The risk of the emergence and reemergence of zoonoses is high in regions that are under anthropogenic actions, as they contribute to the risk of vector disease transmission. Yellow fever (YF) is among the main pathogenic arboviral disease in the world, and the Culicidae Aedes albopictus has been proposed to have the potential to transmit yellow fever virus (YFV). This mosquito inhabits both urban and wild environments, and under experimental conditions, it has been shown to be susceptible to infection by YFV. In this study, the vector competence of the mosquito Ae. albopictus for the YFV was investigated. Female Ae. albopictus were exposed to non-human primates (NHP) of the genus Callithrix infected with YFV for blood meal. Subsequently, on the 14th and 21st days post infection, the legs, heads, thorax/abdomen and saliva of the arthropods were collected and analyzed by viral isolation and molecular analysis techniques to verify the infection, dissemination and transmission. The presence of YFV was detected in saliva samples through viral isolation and in the head, thorax/abdomen and legs both by viral isolation and by molecular detection. The susceptibility of Ae. Albopictus to YFV confers a potential risk of reemergence of urban YF in Brazil.
Twitter Sentiment Analysis of Lagos State 2023 Gubernatorial Election using BERT
Authors: Wusu Ashiribo Senapon , Olabanjo Olusola Aanu , Padonu Rebecca Maulome , Mazzara Manuel
Published: March 2023

Election outcomes have been predicted in the past with the help of various state-of-the-art language models. Sentiment analysis helps in establishing the opinions of the public about a particular subject, a popular experiment known as opinion mining. Twitter has grown in popularity and proven to be a key tool in mining people’s sentiments concerning election and other trending subjects of interest. The outcome of the just concluded Presidential election in Nigeria shifts the focus on Lagos State governorship election. In this study, we propose a Bidirectional Encoder Representations from Transformers (BERT) model for the sentiment analysis of governorship election in Lagos State Nigeria using Twitter data. A total of 800,000 personal and public tweets were scraped from twitter concerning the three prominent contesting candidates using carefully selected search queries. The tweets were preprocessed to avoid noise and inconsistencies. The preprocessed tweets were passed into the pretrained and finetuned BERT model. The result was analyzed to establish the sentiments of the public about the candidates. The social networks of the candidates were also analyzed. The parameter-tuning yield different results with different learning rates (LR). Results showed that the learning rate at 1e-7 gave the best performance and that the smaller the learning rate, the higher the accuracy but the larger the epoch size, the higher the accuracy.
Strategies for the Management of Spike Protein-Related Pathology
Authors: Halma Matthew T.J. , Plothe Cristof , Lawrie Theresa
Published: March 2023

In the wake of the Covid-19 crisis, a need has arisen to prevent and treat two related conditions, Covid vaccine injury and long Covid, both of which have a significant vascular component. Therefore, the management of these conditions require the development of strategies to prevent or dissolve blood clots and restore circulatory health. This review summarizes the evidence on strategies that can be applied to treat both long and vaccine injuries based on similar mechanisms of action.
Identification of Winter Wheat-Growing Areas Based on the XGBoost Algorithm
Authors: Wang Yong , Zhu Daoming , Ding Yuanyuan
Published: March 2023

Machine learning (ML) is widely used in the field of crop-growing information identification based on high-resolution remote sensing images. With Baoying County in Jiangsu Province, China, as the study area, this paper used Sentinel-2 images during the winter wheat growth period to construct its spectral, textural, and topographic features during its growth period and proposes a winter wheat-growing area extraction method based on the extreme gradient boosting (XGBoost) algorithm, which was compared with traditional ML algorithms such as the support vector machine (SVM), classification and regression tree (CART), and random forest (RF) algorithms. The results indicated that (1) a winter wheat-growing area identification model based on the XGBoost algorithm was successfully constructed based on Sentinel-2 images, considering 27 spectral, textural, and topographic features; (2) the constructed model could effectively extract winter wheat in the study area with an overall accuracy of 93.43% and only a small error compared with the actual winter wheat-growing area in Baoying County, meeting the accuracy requirement for crop identification in the study area; and (3) the deep learning algorithm XGBoost outperformed the three traditional ML algorithms, among which the RF algorithm was better than the SVM and CART algorithms, both of which had poor identification performance and a large error compared with the actual growing area. This paper provides a scientific basis for the accurate extraction of winter wheat-growing areas and further research on winter wheat growth monitoring and yield estimation.
Inconsistent Outcomes of Metabolic Surgery for Nonobese Patients with Type 2 Diabetes
Authors: Hur Kyung Yul
Published: March 2023

Metabolic surgery can promote integrated physiologic improvement to ameliorate metabolic illness, particularly type 2 diabetes. Nevertheless, the therapeutic scope has been limited by unexpectedly inconsistent surgical outcomes. Therefore, the purpose of this study
is to overcome the obstacles by determining the core mechanism of conflicting results.
The surgical anatomy, clinical course, and outcomes of various metabolic surgeries, including modified types of duodenal-jejunal bypass procedures, were compared to comprehend specific surgical patterns from distinctive perspectives. Patients in exclusively nonobese groups are subjected to avoid compounding by weight fluctuations. During intestinal anastomosis, the epithelial identity of the succeeding intestine is replaced by that of the proximal epithelium through altered crosstalk between the epithelium and opposing mesenchymal cells. The rapid turnover rate and compensatory proliferation of the succeeding intestine accelerate the propagation of the replaced epithelium. Propagation of replaced epithelium could provoke inconsistent outcomes of metabolic surgery. The major determinants of the conflicting results of metabolic surgery are inadequate duodenal exclusion and inappropriate length of the biliopancreatic limbs. The replaced enteroendocrine cells during regeneration provoke inconsistent outcomes of metabolic surgery. The critical factors are the type and density of enteroendocrine cells distributed at the terminal end of the preceding proximal intestine.
Risk Factors for a Failed Transmetatarsal Amputation in Patients with Diabetes
Authors: Ron Itay , Kyin Cynthia , Peskin Bezalel , Ghrayeb Nabil , Norman Doron , Ben-Kiki Tal , Shapira Jacob
Published: March 2023

Background:

Transmetatarsal amputation (TMA) is a well-recognized limb-salvage procedure, often indicated for the treatment of diabetic foot infections. Currently, there is no widespread agreement in the literature with regard to the factors associated with failure of TMA. This study aimed to define risk factors for the failure of TMA, defined as below-the-knee or above-the-knee amputation, in patients with diabetes.

Methods:

This retrospective cohort study included 341 patients who underwent primary TMA. Patients who had a revision to a higher level (the failed TMA group) were compared with those who did not have failure of the initial amputation (the successful TMA group).

Results:

This study showed a higher frequency of renal impairment, defined as a high creatinine level and/or a previous kidney transplant or need for dialysis, in the failed TMA group (p = 0.002 for both). Furthermore, a Charlson Comorbidity Index (CCI) threshold value of 7.5 was identified as the optimal predictive value for failure of TMA (p = 0.002), and patients with a CCI of >7.5 had a median time of 1.13 months until the initial amputation failed.

Conclusions:

TMA is associated with a high risk of revision. CCI may be used as a preoperative selection criterion, as 71.8% of patients with a CCI of >7.5 had failure of the TMA.

Level of Evidence:

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
Diseño de un lapiceromouse para mejorar la educación de los estudiantes de Ingeniería de Sistemas Empresariales de la Universidad Científica del Sur del periodo 2020-II
Authors:   , Loja Ponce Erick Arturo
Published: March 2023

Desde tiempos inmemorables el ser humano en facilitar la forma del manejo de aparatos tecnológicos difíciles que antiguamente era usado por físicos como el control de una computadora para las distintas ciencias, en este caso la educación con sus distintas áreas en la enseñanza virtual; ha sido de suma urgencia el poder encontrar algún dispositivo que cumpla al 99.9% los requerimientos de las clases por zoom, como permitirnos interactuar, mover, graficar, simbolizar, explicar, identificar, presentar, etc. para poder controlar estos ordenadores porque cuando se trata de clases virtuales actualmente se enseñan diversos softwares como arquitectura, diseño, educación, control de aplicaciones, animación, creación, juegos, diagramación, presentación, etc. Estos periféricos han pasado por numerosos cambios físicos, arquitectónicos y químicos para poder crear un manejo del monitor eficaz y eficiente, aunque no han resueltos algunos requerimientos de los usuarios (estudiante, instructor) es por ello que este proyecto de investigación tendrá como finalidad el presentar una nueva propuesta denominada momentáneamente LapiceroMouse para apoyar en la educación virtual de Lima, Perú 2020. En el siguiente trabajo se planteará algunos problemas, objetivos, hipótesis y sobre todo se conseguirá resolverlos para saber si el LapiceroMouse planteado es uno de los dispositivos para ser fabricados y comercializados sin problema alguno.
Riesgos psicosociales de los trabajadores por departamento en la empresa Mantinni SRL a partir del plan de seguridad y salud en el trabajo en el año 2019
Authors:   , Ruiz Gutiérrez Miguel Stefano
Published: March 2023

El presente estudio tuvo como finalidad determinar si los riesgos psicosociales impactan en la “salud de los trabajadores de la empresa” Mantinni SRL a partir “del plan de seguridad y salud” durante el año 2019. Para responder a la problemática, se aplicó el cuestionario del método Copsoq Istas-21-version media 2.0 a los 30 trabajadores de la empresa Mantinni SRL, donde se analizaron las dimensiones e indicadores psicosociales localizadas por departamento, entre los cuales tenemos: el departamento administrativo con ritmo de trabajo (66.7%), claridad de rol (66.7%) y sentimiento de grupo (33.3%); departamento logístico con ritmo de trabajo (100%), exigencias emocionales (66.7%); “departamento comercial con ritmo de trabajo (100%); el departamento de contabilidad con ritmo de trabajo (75%), apoyo social de compañeros (75%) y previsibilidad (75%); el departamento de alta dirección con ritmo de trabajo (50%); “el departamento de outsourcing con ritmo de trabajo (100%), inseguridad sobre las condiciones de trabajo (33.3%) y previsibilidad””(33.3%); el departamento de almacén con ritmo de trabajo (100%), inseguridad sobre el empleo (100%), inseguridad sobre las condiciones de trabajo (66.7%), apoyo social de compañeros (33.3%) y conflicto de rol (33.3%); el departamento de distribución con ritmo de trabajo (100%), inseguridad sobre el empleo (100%) y exigencia de esconder emociones (100%), y, el departamento de operaciones con ritmo de trabajo (100%), inseguridad sobre el empleo (100%). Se realizó el levantamiento de información y se concluyó que existe riesgo psicosocial por falta de cultura de prevención.
Impacto de la salud oral en la calidad de vida en relación a la caries dental y los determinantes sociales en migrantes venezolanos Lima-2019
Authors:   , Quintanilla Cohello Marco Ignacio
Published: March 2023

Objetivo: Evaluar el impacto de la salud oral en la calidad de vida en relación a la caries dental y los determinantes sociales en migrantes venezolanos en Lima-Perú 2019. Metodología: Se realizó un estudio transversal en una población de 350 migrantes venezolanos (30.1±7,4 años; 52% Varones). Para evaluar la calidad de vida se utilizó el cuestionario “Oral Health Impact Profile spanish versión Lima” (OHIP-14sp Lima). Se determinó el impacto de la salud oral en la calidad de vida según el promedio de puntaje general y por dimensiones. Posteriormente, se realizó un examen clínico evaluando la presencia de lesiones de caries dental (Índice CPOD) y se recolectaron datos sociodemográficos por medio de una encuesta. Resultados: El impacto en la calidad de vida en relación a la salud oral medido mediante el instrumento OHIP-14sp Lima generó un porcentaje de Impacto del (10.6%) en la población migrante. Donde la dimensión de “Malestar Psicológico” fue la que demostró más frecuencia de problema asocia¬do a la calidad de vida con un porcentaje de (38,3%). Conclusión: El impacto en la calidad de vida en relación a la salud oral en el grupo de migrantes evaluados fue bajo en relación al puntaje total del OHIP-14sp Lima. Sin embargo los componentes como severidad de caries dental, sexo y nivel de instrucción, fueron los factores que si generaron un Impacto significativo dentro de una o varias de las dimensiones del OHIP-14-sp Lima.
Modeling Fault Reactivation Triggered by Fluid Injection
Authors: Tran David , Shrivastava Vijay , Nghiem Long
Published: March 2023

With increased focus on CO2 storage, hydraulic fracturing, and steam injection operations in recent years, understanding of fluid induced seismicity has drawn a lot of attention amongst researchers and practicing engineers. Reactivation of existing dormant faults due to injection operations can lead to flow through or along the fault from the reservoir to undesirable zones. It poses a serious challenge that requires careful study so that measures could be taken to avoid such occurrence.

In this paper, a method is presented where geomechanical response is used to compute the slip tendency when the stress changes in a reservoir due to fluid injection. The slip tendency is considered as the main variable to determine whether the fault is reactivated or not. It is computed based on the effective stress normal to the fault surface, and the tangential stress. When the effective stress on a fault surface is reduced due to the increase of pore pressure in grid-blocks adjacent to the fault, it can potentially make the slip tendency exceed the critical limit. In such a case, the transmissibility of grid-blocks on both sides of the fault are increased to allow the fluid to flow into the fault and subsequently along the fault. When the fluid leaks from the reservoir to another zone through the fault, the effective stress on grid-blocks adjacent to the fault increases as the pore pressures in those grid-blocks decrease. This will in turn reduce the slip tendency. Therefore, the transmissibility in this case will also decrease to a value smaller than the one when the fault reactivated.

The algorithm allows the fault to be reactivated or deactivated to cope with the pressure change in the reservoir. The slip displacement at the fault is also estimated. The method is implemented in a multidimensional, multiphase flow simulator to demonstrate the advantages of using geomechanics for predicting fault reactivation, which can lead to leakage of fluids from the reservoir to other zones or to the surface. Three examples, two synthetic and one field, are presented to illustrate application of the procedure.

The proposed method of fault reactivation modeling is suitable for implementing in any fluid flow simulator with geomechanics capability. It is intended for studying and designing of safe injection strategies that avoid undesirable fault reactivation.
An Adaptive Grid Refinement Method for Flow-Based Embedded Discrete Fracture Models
Authors: Li Junchao , Tang Huiying , Zhang Yongbin , Li Xin
Published: March 2023

Projection-based embedded discrete fracture models (pEDFMs) are proven effective for modeling flow barrier effects of high-conductivity or impermeable fractures. However, local grid refinements are still needed to improve the accuracy of simulation in flow areas near fractures. In recent years, adaptive grid refinement techniques have received a lot of attention for dealing with highly heterogeneous and fractured models. But few of them are capable of EDFMs. In this paper, an adaptive grid refinement method under flow-based EDFMs (fEDFMs) is proposed for fractured models. The method starts from an fEDFM model which is built by a new technique of transmissibility modification by introducing an artificial pseudo-steady flow near fractures. Adaptive grid refinement and coarsening procedures are designed under an adaptive criterion based on both the fracture distribution and flow solutions. A flow-based upscaling procedure is adopted to form transmissibilities of the hybrid grids and the solution is mapped from the former grid system. The adaptive grid refinement method is applied in a validation case and a real field case, respectively. In each case, comparisons are made between the simulation results of the proposed adaptive grid refinement models and traditional uniform pEDFMs. Besides, comparisons are also made with the overall fine-scale models which serve as the reference models. The comparisons show that the numerical results of the proposed models have a better match to that of the reference models. And it is proven that the approach is more robust when applied to more general flow scenarios with extremely high or completely sealed fractures which could have a great impact on the flow. The proposed method aims to improve the accuracy of numerical simulation for fractured reservoirs.
Use of Clustering Techniques for Automated Lumping of Components in Compositional Models
Authors: Cancelliere Michel A. , Saint Antonin J. Andino
Published: March 2023

Compositional simulation run times grow significantly as we increase the number of components used to characterize our fluid (SPE 69575). Therefore, having usable and practical models requires that we minimize the number of components without sacrificing prediction accuracy. In this paper we validate a novel approach that automates the compositional lumping as a part of the simulator pre-processing and allows quick evaluation of the impact on results and run-times of reducing the number of components in actual simulation runs.

Different clustering techniques such as K-means or Agglomerative are applied on five different compositions from the literature which typically would require compositional modelling (gas condensate to volatile oil). The performance of these lumped compositions obtained from clustering are compared with an exhaustive brute-search lumping and the original full composition. These comparisons are made by simulating classical CCE & DLE or CVD lab experiments. The results are quantitatively assessed for proximity to the full composition simulation. With the techniques already validated, a preprocessor is developed that allows the user to input a full composition and set the number of components to be used for the run. These heuristic clustering techniques provide excellent results with minimal time. Although brute-force search may occasionally deliver marginally better outcomes, it does so at immense computational costs and any advantage vanishes after regression.

To the best of our knowledge, advanced clustering techniques have not previously been applied to the problem of lumping as the industry has relied mostly on theoretical or empirical arguments to prescribe the lumping approach, to be carried out manually, with the occasional study on brute force search (SPE-170912). An additional novelty is to automate compositional lumping in the simulator preprocessor, allowing for accelerated validation of the lumping approach under the expected reservoir conditions. The speed and flexibility of the approach makes it an excellent practical option to test and scale the number of components used in compositional models.
Consistent Discretization Methods for Reservoir Simulation on Cut-Cell Grids
Authors: Alpak Faruk O. , Jammoul Mohamad , Wheeler Mary F.
Published: March 2023

Discretization methods have been developed to accompany a novel cut-cell gridding technique for reservoir simulation that preserves the orthogonality characteristic in the lateral direction. A major drawback of the cut-cell gridding method is that polyhedral cells emerge near faults that have relatively small volumes. Pragmatic but non-rigorous approximation methods have been developed in the past to merge these cells with their neighbors so that the grid representation fits the two-point flux approximation (TPFA) framework. In this work, we take a different approach and investigate the global and local applications of select consistent discretization methods in the vicinity of fault representations on cut-cell grids.

We develop and test consistent discretization methods that are of low computational cost and do not require major intrusive changes to the solver structure of commercial reservoir simulators. Cell-centered methods such as multi-point flux approximation (MPFA), average multi-point flux approximation (AvgMPFA), and nonlinear two-point flux approximation (NTPFA) methods fit naturally into the framework of existing industrial-grade simulators. Therefore, we develop and test variants of the AvgMPFA and NTPFA methods that are specifically designed to operate on cut-cell grids. An implementation of the well-established but computationally expensive MPFA method is also made for cut-cell grids to serve as a reference to computations with AvgMPFA and NTPFA. All investigated methods are implemented within the framework of a full-physics 3D research simulator with a general compositional formulation, which encompasses black-oil models.

We use a set of synthetic cut-cell grid models of varying complexity including conceptual models and a field-scale model. We compare the novel cut-cell adapted AvgMPFA and NTPFA simulation results in terms of accuracy and computational performance against the ones computed with reference MPFA and TPFA methods. We observe that AvgMPFA consistently yields more accurate and computationally efficient simulations than NTPFA on cut-cell grids. Moreover, AvgMPFA hybrids run faster than NTPFA hybrids when compared on the same problem for the same hybridization strategy. On the other hand, the computational performance of AvgMPFA degrades more rapidly compared to NTPFA with increasing "rings" of orthogonal blocks around cut-cells owing to its relatively wider stencil. Auspiciously, only one or two "rings" of orthogonal blocks around cut cells are sufficient with AvgMPFA to deliver high accuracy.