CienciaUat最新文献_第9页

La cabra: selección y hábitos de consumo de plantas nativas en agostadero árido 山羊：干旱地区本土植物的选择和消费习惯

IF 0.3

CienciaUat Pub Date : 2021-01-30 DOI: 10.29059/CIENCIAUAT.V15I2.1409

C. C. Zapata-Campos, M. Mellado-Bosque

{"title":"La cabra: selección y hábitos de consumo de plantas nativas en agostadero árido","authors":"C. C. Zapata-Campos, M. Mellado-Bosque","doi":"10.29059/CIENCIAUAT.V15I2.1409","DOIUrl":"https://doi.org/10.29059/CIENCIAUAT.V15I2.1409","url":null,"abstract":"Goats dwell arid regions as a result of their adaptation to extreme conditions. Diet selection is one of the behavioral strategies that has allowed them to avoid nutritional deficiencies or poisonings, even under conditions of low food availability. Likewise, browsing as an ingestive behavior of the species allows them to select and obtain plants with adequate crude protein values, which favor their development and survival. Also, goats adapt to the chemical characteristics of plants, which develop bioactive compounds to avoid being consumed. These secondary metabolites can have antinutritional and toxic effects, as well as medicinal or curative effects, depending on the consumption that the animal has. The objective of this work was to review the selection and habits of goats in the consumption of native plants, to determine how they favor the survival and productivity of the species under the conditions of environmental adversity that characterize arid regions. This knowledge will allow to establish strategies for the proper management of the rangeland and to know the effect that the compounds of the secondary metabolism of the plants may have on the reproductive, nutritional, and health processes, as well as on the products derived from the milk or meat of these animals.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48823997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Factores de capital humano que impactan el capital social: estudio de hoteles del sur de Tamaulipas

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/CIENCIAUAT.V15I1.1402

Mauricio Herrera-Rodríguez, M. Gutiérrez-Ortiz, Ana Elisa Moreno-Herrera, José Isabel Segura-Zaleta

引用次数: 5

Estudio comparativo de técnicas de analítica del aprendizaje para predecir el rendimiento académico de los estudiantes de educación superior 分析性学习技术预测大学生学业成绩的比较研究

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/CIENCIAUAT.V15I1.1392

Elizabeth Acosta-Gonzaga, Aldo Ramirez-Arellano

{"title":"Estudio comparativo de técnicas de analítica del aprendizaje para predecir el rendimiento académico de los estudiantes de educación superior","authors":"Elizabeth Acosta-Gonzaga, Aldo Ramirez-Arellano","doi":"10.29059/CIENCIAUAT.V15I1.1392","DOIUrl":"https://doi.org/10.29059/CIENCIAUAT.V15I1.1392","url":null,"abstract":"The issue of school dropout involves factors such as students’ engagement that can predict his or her success in school. It has been shown that student engagement has three components: behavioral, emotional and cognitive. Motivation and engagement are strongly related since the former is a precursor of engagement. The aim of this study was to compare the efficiency of linear regression against two data mining techniques to predict the students’ academic performance in higher education. A descriptive cross-sectional study was carried out with 222 students from a public higher education institution in Mexico city. An analysis of hierarchical linear regression (LR) and learning analytics techniques such as neural networks (NN) and support vector machine (SVM) was conducted. To assess the accuracy of the learning analytics techniques, an analysis of variance (ANOVA) was carried out. The techniques were compared using cross validation. The results showed that behavioral engagement and self-efficacy had positive effects on student achievements, while passivity showed a negative effect. Likewise, the LR and SVM techniques had the same performance on predicting students’ achievements. The LR has the advantage of producing a simple and easy model. On the contrary, the SVM technique generates a more complex model. Although, if the model were aimed to forecast the performance, the SVM technique would be the most appropriate, since it does not require to verify any statistical assumption.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43946439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Efecto de inoculantes y aditivos sobre fracciones de fermentación ruminal y degradación in vitro en ensilaje de sorgo (Sorghum sp) 接种剂和添加剂对高粱瘤胃发酵组分和体外青贮降解的影响

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/CIENCIAUAT.V15I1.1332

Roselia Ramírez-Díaz, R. Pinto-Ruiz, Francisco Medina-Jonapá, F. Guevara-Hernández

{"title":"Efecto de inoculantes y aditivos sobre fracciones de fermentación ruminal y degradación in vitro en ensilaje de sorgo (Sorghum sp)","authors":"Roselia Ramírez-Díaz, R. Pinto-Ruiz, Francisco Medina-Jonapá, F. Guevara-Hernández","doi":"10.29059/CIENCIAUAT.V15I1.1332","DOIUrl":"https://doi.org/10.29059/CIENCIAUAT.V15I1.1332","url":null,"abstract":"The action of inoculants and additives on the chemical composition and ruminal degradation of sorghum silage dry matter (DM) has already been reported. However, the effect that these have on the microbial activity and, therefore, on its potential for assimilation at the ruminal level is unknown. For that reason, the objective of this study was to evaluate the effect of the addition of inoculants and additives in silage of the entire plant of Sorghum sp. on fractions of ruminal fermentation and in vitro degradation. The experimental design was completely random, with 7 treatments (3 inoculants, 2 additives and a combination of inoculate with additive) and 21 repetitions per treatment. Different types of inoculants and additives were used in the process of sorghum silage: cheese whey, yogurt, phosphoric acid, Lactobacillus plantarum and mineral mixture. After 60 d of fermentation, dry matter (DM), hydrogen potential (Hp), crude protein (CP), in vitro dry matter degradation to 24 h (IVDMD), parameters of fermentation kinetics (Vmax= maximum volume L = lag phase, S = fermentation rate) and fractional volume (rapid fermentation = 0 h to 8 h, intermediate = 8 h to 24 h and slow = 24 h to 72 h) were quantified through the in vitro gas production technique. The results indicated that the inoculants and additives modified the chemical composition, the L parameters, Vmax, IVDMD and the rapid and intermediate fermentation fractions (P < 0.05). The use of cheese whey and L. plantarum as inoculants in sorghum silage reduced the loss of CP; and, overall, the use of inoculants and additives improved silage Hp; however, it decreased the use of rapid and intermediate fermentation fractions, modified the fermentation potential of the silage and provoked a negative effect on the IVDMD.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49325031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mecanismos de reclutamiento utilizados por las redes de tráfico sexual en Nevada, Estados Unidos 美国内华达州性贩运网络使用的招募机制

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/cienciauat.v15i1.1331

Karla Lorena Andrade-Rubio, S. Izcara-Palacios

引用次数: 0

Análisis de la generación de conocimiento en la Reserva de la Biosfera El Cielo, México y la vinculación con su programa de manejo 墨西哥El Cielo生物圈保护区知识生成分析及其与管理计划的联系

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/cienciauat.v15i1.1326

F. Caballero-Rico, José Alberto Ramírez-de-León, Ramón Ventura Roque Hernández

{"title":"Análisis de la generación de conocimiento en la Reserva de la Biosfera El Cielo, México y la vinculación con su programa de manejo","authors":"F. Caballero-Rico, José Alberto Ramírez-de-León, Ramón Ventura Roque Hernández","doi":"10.29059/cienciauat.v15i1.1326","DOIUrl":"https://doi.org/10.29059/cienciauat.v15i1.1326","url":null,"abstract":"The generation, systematization and knowledge transfer about biodiversity is a fundamental input for its conservation and the inclusion of the community. El Cielo Biosphere Reserve (ECBR) in Tamaulipas, Mexico, is a natural area protected due to the characteristics of its biotic and abiotic resources. The objective of this research was to characterize the current state of the generated knowledge about El Cielo Biosphere Reserve and its relationship with its management program. A qualitative and quantitative search, classification, and review of the primary sources in the Web of Science, Scopus, and Redalyc databases was performed. This information was contrasted with the content of the ECBR Management Program. Results show an indirect association between publications and the management program with the absence of publications in the culture, communication, and management subprograms. The need to systematize the addressed topics was also evident. The main achievement of this work is the integration, mapping, and systematization of publications, which establishes a baseline for future studies. The existing knowledge about ECBR, published in scientific journals, was conducted from a disciplinary approach in the field of Biology. There is evidence that it was used to prepare its most recent management program and that it impacts at least 20 % of the actions included in the document. However, the process for the transfer of knowledge was indirect, and new transdisciplinary approaches are required to address the existing socio-ecological problems.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46347108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soledad en la pareja y su relación con el apego 夫妻的孤独及其与依恋的关系

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/cienciauat.v15i1.1376

Luisa Fernanda Granillo-Velasco, Rozzana Sánchez-Aragón

{"title":"Soledad en la pareja y su relación con el apego","authors":"Luisa Fernanda Granillo-Velasco, Rozzana Sánchez-Aragón","doi":"10.29059/cienciauat.v15i1.1376","DOIUrl":"https://doi.org/10.29059/cienciauat.v15i1.1376","url":null,"abstract":"Loneliness is a phenomenon with important consequences in the life of those who suffer from it, including on their psychological health. This has been conceived as an unpleasant experience related to the need for unsatisfied interpersonal intimacy, which implies an imbalance in the level of socio-affective interaction of an individual and occurs when the individual’s social network is deficient. Its measurement has been carried out through different instruments, among which the Social and Emotional Loneliness Scale for Adults (SELSA), which includes loneliness in 3 social domains: couple, family and friends, stand out for their psychometric characteristics. The objective of this research was the psychometric validation of the Social and Emotional Loneliness Scale for Adults (SELSA) in the context of the couple’s relationship, as well as assess its relationship with attachment styles in Mexico. This requires an accidental non-probabilistic sample of 194 heterosexual couples. The study design was instrumental because the validation of a new measure of loneliness was performed and correlated to the analysis of Pearson’s correlation between loneliness factors and attachment styles. As a result of the validation, 5 factors were obtained, accompaniment of friends, accompaniment of the partner, accompaniment of the family, feeling of emptiness and longing for which the last two had not been obtained in the original version. Finally, when\u0000analyzing the relationships between attachment styles and loneliness, interesting data were observed that indicate the importance of the accompaniment of the partner when secure attachment is developed. Furthermore, the data also show the central role played by the accompaniment of family and friends when anxious or avoidant attachments, in addition to higher rates of feelings of emptiness and longing, are experienced.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46663388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelo predictivo del riesgo de abandono escolar en educación media superior en México 墨西哥高中辍学风险预测模型

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/CIENCIAUAT.V15I1.1349

Luis Fernando Hernández-Jácquez, Frine Virginia Montes-Ramos

{"title":"Modelo predictivo del riesgo de abandono escolar en educación media superior en México","authors":"Luis Fernando Hernández-Jácquez, Frine Virginia Montes-Ramos","doi":"10.29059/CIENCIAUAT.V15I1.1349","DOIUrl":"https://doi.org/10.29059/CIENCIAUAT.V15I1.1349","url":null,"abstract":"National high school dropout rates in Mexico, fluctuate between 14.5 % and 16.5 %, and empirical research suggests that dropout is mostly associated with failure, and that this in turn, is related to issues such as lack of learning self-regulation and study habits. The objective of this research was to establish a model that predicts the risk of high school students’ drop in Mexico. A quantitative, non-experimental and cross-sectional research was developed. The independent variable, which was the risk of dropping out of school, was assessed through the School Dropout Questionnaire, while the predictive variables study habits, self-regulation learning and learning styles (as requested by the participating institution) were assessed through the Study Habits Questionnaire, the Learning Strategies and Motivation Questionnaire (CEAM II), and the Honey – Alonso Learning Styles Questionnaire (CHAEA). To determine the predictive equation, the binary logistic regression model was used using the “Wald backward elimination steps” method, with a sample of 192 first semester students of an agricultural technological baccalaureate, whose ages ranged between 14 and 16 years. A model that includes the dimensions of note taking study planning strategies related to study habits; and self-efficacy for learning, related to self-regulation was obtained. This model explained 37.0 % of the phenomenon. It is concluded the establishment of dropout risk prediction mechanisms could be improve or increase the development of the aforementioned dimensions in order to reduce to a certain extent the risk of dropping out.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48109952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Estimación del rendimiento máximo sostenible del recurso tiburón-cazón en México 墨西哥鲨鱼-卡松资源最大可持续产量的估计

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/cienciauat.v15i1.1292

J. Rodríguez-Castro, Sandra Edith Olmeda-de-la-Fuente, Alfonso Correa-Sandoval, Crystian Sadiel Venegas-Barrera

{"title":"Estimación del rendimiento máximo sostenible del recurso tiburón-cazón en México","authors":"J. Rodríguez-Castro, Sandra Edith Olmeda-de-la-Fuente, Alfonso Correa-Sandoval, Crystian Sadiel Venegas-Barrera","doi":"10.29059/cienciauat.v15i1.1292","DOIUrl":"https://doi.org/10.29059/cienciauat.v15i1.1292","url":null,"abstract":"In Mexico, shark catch ranks 10th place out of the 22 most representative fisheries in the country, with an estimated annual average number of 29 772 T and an economic income of approximately MXN 437 million. The maximum sustainable yield (MSY), which means the maximum catch that can be obtained without the depletion of the fishing resource at any given time is one of the main points of reference in the evaluation of fisheries. In this study, the MSY of sharks in Mexico was estimated for 26 coastal areas (Mexico, Pacific ocean, gulf of Mexico, 6 regions of the NOM-029-PESC-2006 and 17 coastal States). Catch time series (CTS) were used in tons per year of reported catch (Rc) and total catch (Tc) (reported catch + non-reported catch) over the 1976 to 2014 period. In addition, empirical models that relate the maximum catch of the STM to the MSY were applied. There were no significant differences between the models applied. Based on the estimated Tc and MSY (T x 103) there is an over-exploitation of sharks in Mexico (Tc = 51 417, MSY = 29 040), in the Pacific ocean (Tc = 38 654, MSY = 20 840) and in the gulf of Mexico (Tc = 15 737, MSY = 14 540); in Regions 2 (gulf of California) (Tc = 22 664, MSY = 14 330) and 5 (coastal line of Tamaulipas, Veracruz and Tabasco) (Tc = 9 202, MSY = 8 510) and on thecoast of the States of Baja California (Tc = 5 781, MSY = 4 880) and Baja California Sur (Tc = 5 950, MSY = 5 510). It is recommended to urgently address the problem of using this fishery resource in the Mexican Republic.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42078407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uso de las tecnologías de la información y comunicación como herramienta de apoyo en el aprendizaje de los estudiantes de medicina 利用信息和通信技术作为支持医学生学习的工具

IF 0.3

CienciaUat Pub Date : 2020-08-01 DOI: 10.29059/cienciauat.v15i1.1380

Miriam Janet Cervantes-López, Alma A. Peña-Maldonado, Alcides Ramos-Sánchez

{"title":"Uso de las tecnologías de la información y comunicación como herramienta de apoyo en el aprendizaje de los estudiantes de medicina","authors":"Miriam Janet Cervantes-López, Alma A. Peña-Maldonado, Alcides Ramos-Sánchez","doi":"10.29059/cienciauat.v15i1.1380","DOIUrl":"https://doi.org/10.29059/cienciauat.v15i1.1380","url":null,"abstract":"The use of electronic devices as educational tools is very frequent in the global knowledge society, which has been favored by current technological advancement. New alternatives are employed in teaching practice and in educational processes, and institutions dedicated to medical education are no exception. The objective of this work was to establish whether the use of information and communication technologies (ICT) for medical students’ learning at the Autonomous University of Tamaulipas, Southern campus. A descriptive, observational and crosssectional study was carried out. Data was collected through a questionnaire administered to 109 students. Of the total number of participants, 90.83 % had a laptop, 94.50 % had internet access, either via a computer or a mobile phone. The effective time spent daily using ICT for educational activities ranged between two and four hours, and Google Scholar was the most used database for information retrieval. On the other hand, it was found that between 50 % and 75 % of respondents have an understanding and command of the English language. The use of ICT’s is very supportive for students, since it facilitates both, the scientific and medical information retrieval, as well as the development of competencies in the processing and management of information. This simplifies the exchange of updated scientific information to continue with their medical education.","PeriodicalId":42451,"journal":{"name":"CienciaUat","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41968857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2