bluuebunny/crossref_metadata_2025 huggingface dataset:
Does the facial pattern give individuals a profile of a crime suspect?
Authors: Santos Nathalia de Lima , De Amorim Camila Silva , Dos Santos Camila Barreto Rangel , Lima Stefanni Olga Aguiar Sales , Coqueiro Raildo da Silva , Paranhos Luiz Renato , Cruz João Pedro Pedrosa , Maia Lucianne Cople , Pithon Matheus Melo
Published: October 2019

To evaluate the influence of mesofacial, brachyfacial and dolichofacial facial patterns on giving an individual the profile of a crime suspect in the eyes of public security agents. This study had a cross-sectional design, conducted with public security agents of both sexes (n=100), where images of facial composites (police sketches) of individuals with different facial patterns (mesofacial, brachyfacial and dolichofacial) were used. With these images in hand, a questionnaire was created, divided into three parts: the first in which all the images were presented together, allowing comparison among them; the second, in which each image was evaluated separately followed by questions and the third that consisted on a visual analog scale that presented a bar with marks going from 0 to 100, where 0 represented the untrustworthy individual, 50 the individual who could be trusted, and 100 a very trustworthy individual. When all the data had been obtained statistical analyses were performed using the Chi-square and Friedman tests. The level of significance adopted was 5% (α=0.05). The dolichofacial individual was associated with security agents as the most prone to commit crimes and became more insecure and distrustful when compared to the mesofacial and brachyfacial individuals (p <0.001). The dolichofacial profile had a negative influence on the judgment of security agents who attributed to it, a character suspected of a crime and a low level of trustworthiness.
Organic matter and moringa leaf extract’s effects on the physiology and fruit quality of red seedless watermelon (Citrullus lanatus)
Authors: Dalorima Tahir , Khandaker Mohammad Moneruzzaman , Zakaria Abd Jamil , Mohd Khamsah Suryati , Sajili Mohammad Hailmi , Badaluddin Noor Afiza , Hasbullah Mohammed
Published: October 2019

This study was designed to assess the effects of different types of organic matter on the quality and biochemical properties of red seedless watermelon. The research was a single factor experiment, which involved six (6) treatments and four (4) replications. Watermelon grown and harvested from five (5) different organic matter sources, namely; vermicompost (VC), poultry manure (PM), cow dung (CD),  goat dung (GD),  and moringa leaf extract (MLE), at the rates of 10 ton, 20 ton, 30 ton, 30 ton, and 3000 L ha-1, respectively, were used in this study. The results revealed that the treatment of vermicompost improved the chlorophyll content, chlorophyll fluorescence, stomatal conductance, internal carbon dioxide, net photosynthetic rate, fruit weight and mineral nutrient content of watermelon. The application of cow dung reduced the rind thickness and increased the TSS and antioxidant activity of the watermelon.  The goat dung treatment significantly affected fruit size, juice content and the pH content of the watermelon’s fruit juice. The poultry manure (PM) and moringa extract (MLE) treatments resulted in the highest anthocyanin content of all the watermelon. Although all the organic matter, in their unique ways, improved the quality of red seedless watermelon, the study shows that the vermicompost application had better growth, yield and improvement in the quality of watermelon.
CARACTERIZAÇÃO DO GÊNERO STAND UP
Authors: Andrade Valdete , Ottoni Maria Aparecida Resende
Published: October 2019

Neste estudo, temos como objetivo realizar a análise discursiva crítica de exemplares do gênero stand up, com base nos pressupostos da Análise de Discurso Crítica (ADC). Para tanto, selecionamos quatro apresentações de stand up, retirados de um corpus composto por vinte e oito (28) vídeos, publicados entre 2011 e 2015, e veiculados na internet pelo site do YouTube.  Por meio do material empírico, o texto transcrito, buscamos relações dialéticas entre discurso e práticas sociais. Assim, adotamos a proposta de Fairclough (2003) de se analisar os modos pelos quais o discurso figura nas práticas sociais - modos de agir, de representar e de ser - articulados aos três significados - o acional, o representacional e o identificacional.  O gênero em questãofoi analisado em termos de atividade, relações sociais e tecnologias da comunicação. Este estudo evidencia potencialidades da ADC, para a análise de gêneros, e se constitui em uma importante contribuição para esse campo teórico e, especialmente, para a caracterização de outros gêneros orais.
HOMILIA
Authors: Martins Sandra Eleutério Campos
Published: October 2019

Neste trabalho, dedicamo-nos a investigar um gênero oral, a homilia, que circula em uma das esferas da atividade humana - a religiosa Católica Apostólica Romana, como parte integrante da Liturgia, na Igreja, com vistas a conceituá-lo e caracterizá-lo, a partir dos aspectos constitutivos do gênero, propostos por Bakhtin (2003), e constitutivos da fala, como modalidade de funcionamento da língua, especialmente de acordo com Marcuschi e Dionísio (2007) e, ainda, da proposta de Travaglia ([2003]/2007) de parâmetros e critérios para caracterização das categorias de texto. Para constituir o corpus dessa investigação, escolhemos aleatoriamente 10 (dez) homilias gravadas em vídeo, disponíveis em diferentes sites religiosos, e procedemos à transcrição dessas homilias. As categorias de análise permitiram-nos proceder à descrição e caracterização das homilias, caracterizando-as enquanto gênero. A partir dessa análise, pudemos inventariar as suas configurações, no que se refere à estrutura composicional, ao conteúdo temático, à função sociocomunicativa, às características da superfície linguística e às condições de produção.
CARACTERIZANDO O GÊNERO ORAL MINISTRAÇÃO DA PALAVRA
Authors: Dias Eliana , De Lima Maria Cecília
Published: October 2019

Neste artigo, partimos da hipótese de que o gênero oral Ministração da palavra está intrinsecamente ligado, no seu uso, aos gêneros Pregação da palavra, Sermão e Homilia. Com o objetivo de compreendermos como se organizam o ato discursivo, os mecanismos e as estratégias utilizadas pelos pastores de uma igreja evangélica de Uberlândia, no momento da produção do gênero Ministração da palavra, nessa pesquisa, apresentamos as características desse gênero. Os critérios adotados para nossas análises se baseiam na teoria de Travaglia (2007), que propõe a caracterização de um tipo, gênero ou espécie de texto por meio da utilização de cinco parâmetros, quais sejam: o conteúdo temático; a estrutura composicional; os objetivos e ou funções sociocomunicativas; as características da superfície linguística e as condições de produção. Baseamo-nos também em outro estudioso, Fairclough (2001), da Análise do Discurso Crítica, por percebermos que a noção de sujeito é central na proposta de discurso evangélico como prática social. Dentre outras constatações, verificamos que o gênero Ministração da palavra não é apenas um nome distinto dado por uma comunidade religiosa, o que o difere dos demais gêneros é a linguagem informal e a grande intimidade dos pastores com o público, ao utilizarem esse gênero.
Assessment of perceived service quality using servqual mod-el: a case study of Pakistan international airline (PIA) in-flight hospitality
Authors: Ali Brohi Manzoor , A. Shaikh Aftab
Published: October 2019

The service industry is rapidly growing worldwide with latest and sophisticated tools and strategies for satisfaction of their ultimate customers. Provision of an exceptional service is the lifeblood of airline survival, with the airlineâ€™s mid-flight operations being the most crucial fragment of the whole service encounter. This study hence quantifies and weighs the perceived service quality against the desired service quality expected by the customers of Pakistan International Airlines during flight operations, through the 5 main dimensions of SERVQUAL exemplified by the 30 service attributes. The main objective of this study is to find out gap between perceived service quality and expected service quality.This research is quantitative in nature, Factor Analysis and one sample T-Test were used for analysis of data and close-ended questionnaires were used to collect the data from sample of 120 passengers who travelled through PIA at least once is last 12 months. According to the results shown by the Factor Analysis, 8 components were retained or extracted out of 30 variables; all the variables have high correlation with components as overall correlation measured by Factor Analysis is 0.804 which is excellent in the practice. According to KMO and Bartlettâ€™s test, the sampling accuracy remained .857 which is quite good measurement. In addition to that, one sample T- test shows that variable Assurance scores 2.88 average mean perception out of 3.0 average mean expectation touches the expectations but not up to desire level of quality. However, other variables like responsiveness, Empathy, Reliability and Tangibility score 2.78, 2.67, 2.67, and 2.64 respectively.Average Mean Difference Gap (P-E) shows variable Assurance reveals low level of gap -0.12. However, this does not fill the quality gap of minimum 3.0 of Average Mean Expectation. This study exhibits tremendous service gap in other variables as Responsiveness -0.22, Empathy -0.33, Reliability -0.33 and Tangibility possesses -0.35 in terms of Average Mean Difference Gap.The necessity of this research study was deeply felt as a thin of number of passengers prefers PIA services. The service quality of PIA is diminishing with poor service strategies, insufficient facilities and lack of inflight hospitality measures for passengers; therefore, this research will help the key decision makers to identify the areas to improve, and take necessary remedial actions.Â Â
Pembuatan Alat Ukur Kecepatan Angin Optocoupler dengan SMS Berbasis Mikrokontroler
Authors: Suryadi Dedi , Al Ayufhi Syahlahudhin , Suryono Ahmad Fauzan , Maimuzar Maimuzar
Published: October 2019

Energi listrik merupakan elemen penting dalam berbagai aspek kegiatan manusia. Kebutuhan listirk ini meningkat dengan meningkatnya populasi manusia. Solusi yang dapat diberikan dalam masalah ini adalah energi terbarukan, salah satunya adalah energi angin. Untuk memanfaatkan energi angin, perlu untuk mengetahui potensi angin di daerah yang akan dipasang pembangkit. Penelitian ini akan membuat alat ukur kecepatan angin yang dapat mengukur dan merekam data angina dengan menggunakan optocoupler. Alat ukur ini juga dilengkapi dengan sistem SMS untuk akses datanya dalam jarak jauh. Sehingga alat ini dapat berfungsi bukan hanya sekedar pengukur kecepatan angin tetapi juga bisa mengirim data kepada operator melalui SMS. Dalam penelitian ini, mikrokontroler yang digunakan adalah Arduino Mega 2560. Selanjutnya, alat ukur hasil rancangan dibandingkan dengan alat ukur standar sebagai validasi. Berdasarkan hasil pengujian meninjukkan bahwa alat ukur kecepatan angin berhasil dibuat dan dapat digunakan untuk mengukur potensi angin
Rubimaillin decreases the viability of human ovarian cancer cells via mitochondria-dependent apoptosis
Authors: Siwei Zhang , Zhen Wu , Zhi Zhou , Xuguang Hu , Yousheng Li
Published: October 2019

This study was aimed to investigate the anti-tumor activity of rubimaillin in vitro, and the mechanism involved. The inhibitory effect of rubimaillin on cell proliferation was determined with MTT assay. Apoptosis was assayed using AV/PI double staining, while the mitochondrial membrane potential of SKOV-3 cells was determined with Rhodamine 123 (Rh123) staining. Western blot assay was used to determine the effect of rubimaillin on the expressions of Bcl-2, Bax, PARP, cleaved PARP, caspase3, cleaved caspase3, and other apoptosis-related proteins in SKOV-3 cells. Rubimaillin inhibited the growth of SKOV-3 cells in a concentration-dependent manner and induced apoptosis of tumor cells through the mitochondrial apoptosis pathway. These results indicate that rubimaillin is a potential anti-ovarian cancer drug.
The role of Smyrnium cordifolium Boiss extract and curzerene on withdrawal syndrome in mice
Authors: Pari Nazari , Parichehreh Yaghmaei , Alireza Rangin , Naser Abbasi
Published: October 2019

Morphine is the most effective medication to relieve pain, antinociception and withdrawal syndrome, but clinical application of these compounds is greatly affected by the occurrence of addiction. The aim of this research was the influence of SE and curzerene (Cur) on withdrawal syndrome signs in mice contrasted with clonidine. Extraction of the S. cordifolium extract (SE) was done by the Soxhlet method. Addiction was produced using the subcutaneous injections of morphine for 7 days. To estimate the influences of SE and Cur, the 64 male mice were separated into eight of 8. Sets 1, 2 and 3 were treated SE (100,200,300 mg/kg). Sets 4, 5 and 6 were treated Cur (0.03, 0.06, 0.12mg/kg). The findings showed that curzerene was the most important effective component S. cordifolium extract. Curzerene and SE reduced the mean of weight loss, diarrhea, and wet dog shakes in morphine-dependent mice in comparison with clonidine. All doses of Curzerene and SE extract reduced the locomotor activity and body weight loss when compared to the control group in morphine-dependent mice but not to clonidine compared. The SE (100mg/kg) and Cur (0.03mg/kg) are reduced signs of withdrawal syndrome equally to clonidine. SE (200 mg/kg) and Cur (0.06 mg/kg), are reduced of the body weight loss significantly in relation to clonidine (P<0.05). SE (200 mg/kg) and Cur (0.06 mg/kg), are reduced of diarrhea significantly in relation to clonidine (P<0.01). This was while SE (300mg/kg) and cur (0.12mg/kg) had deadly effect. Curzerene and SE are able to decrease the signs of withdrawal syndrome, which might have a human therapeutic capacity. Curzerene may be one of the terpenoids responsible for the effect of the S. cordifolium extract. Nevertheless, more investigations are needed to determine the exact mechanism of the effect of SE and curzerene.
The Cooperative Board Game THREE. A Test Field for Experimenting with Moral Dilemmas of Human-Robot Interaction
Authors: Łupkowski Paweł , Wasielewska Aleksandra
Published: October 2019

The paper describes the cooperative board game entitled THREE. The game is inspired by the Three Laws of Robotics. We show how this game may be used as an environment for exploring the ethical problems arising from human-robot interaction. We present the idea behind the game, discuss its cooperativeness and analyze the dilemmas encountered by players during the gameplay. We also present and discuss the results of the game evaluation.
Translingual negotiation strategies in CMC contexts: English-medium communication in online marketplaces
Authors: Im Jae-hyun , Park G Yeon , Choe Hohsung
Published: October 2019

This study explores how interlocutors from different linguistic and cultural backgrounds employ the five translingual negotiation strategies of envoicing, recontextualization, interactional activity, entextualization and transmodality to communicate in online marketplaces. Informed by conversation analysis and translingualism, three computer-mediated communication (CMC) data sets were analyzed. Findings are as follows: 1) Korean speaker’s envoicing strategy was used to reveal his non-native English speaker status, which softened the impression of discourtesy. It set the co-constructed conversation stage where English speaking counterparts would be implicitly requested to speak more intelligibly; 2) recontextualization strategy was presented through emojis, emoticons, transliteration and translation to turn a business transaction into a friendly conversation between translingual speakers from different cultures where non-verbal cues of hospitality can be delivered in written forms in online one-on-one chats; 3) interactional strategy was observed when speakers did not share a culturally-bounded speech act of “conversation closers.” Misalignment was partially solved by mutual efforts to close their online conversation; 4) entextualization strategy was shown from Korean speakers’ asynchronous communication to confer on appropriate English expression by seeking help from other online community members; and, 5) transmodal strategy refers to the practice of shuttling among different on/offline modes and platforms to encode and decode languages, emotions, and cultural perspectives by depending on a wide range of resources and multiple strategies to accomplish meaningful interaction in online marketplaces. This study shows the translingual characteristics of English-medium online communication, suggesting an extended model of translingual meaning negotiation strategies in CMC contexts.
Constructing a pseudo-free
family of finite computational groups under the general
integer factoring intractability assumption
Authors: Anokhin Mikhail
Published: October 2019

We provide a correct version of Remark 3.5 of the
paper mentioned in the title. Also, we fix a typo in
Remark 4.4 of that paper.
Inverse source problems for positive operators. I: Hypoelliptic diffusion and subdiffusion equations
Authors: Ruzhansky Michael , Tokmagambetov Niyaz , Torebek Berikbol T.
Published: October 2019

A class of inverse problems for restoring the right-hand side of a parabolic equation for a large class of positive operators with discrete spectrum is considered. The results on existence and uniqueness of solutions of these problems as well as on the fractional time diffusion (subdiffusion) equations are presented. Consequently, the obtained results are applied for the similar inverse problems for a large class of subelliptic diffusion and subdiffusion equations (with continuous spectrum). Such problems are modelled by using general homogeneous left-invariant hypoelliptic operators on general graded Lie groups. A list of examples is discussed, including Sturm–Liouville problems, differential models with involution, fractional Sturm–Liouville operators, harmonic and anharmonic oscillators, Landau Hamiltonians, fractional Laplacians, and harmonic and anharmonic operators on the Heisenberg group. The rod cooling problem for the diffusion with involution is modelled numerically, showing how to find a “cooling function”, and how the involution normally slows down the cooling speed of the rod.
Hacia Una Tipología De Las Fórmulas De Saludo En La Historia Del Español
Authors: Zieliński Andrzej
Published: October 2019

El objetivo del presente artículo es analizar en la historia del español dos tipos de fórmulas de saludo, entendidas como unidades discursivas propias del acto de habla expresivo que sirven para abrir el canal comunicativo de las relaciones sociales.

A través de la búsqueda sistemática en textos del CORDE de hasta finales del siglo XIX, intentaremos hallar (i) los factores sociopragmáticos que desempeñan el papel más importante en cada tipo de saludo, (ii) el origen paradigmático de cada fórmula, (iii) su distribución sociocultural y las preferencias discursivas e informativas, y (iv) su nivel de predominio en determinadas épocas.
Early path nursing on neurological function recovery of cerebral infarction
Authors: Chen Ling , Han Zhena , Gu Junjie
Published: October 2019

Purpose

to study the application of path type early rehabilitation nursing in the nursing of patients with cerebral infarction and to explore its impact on the recovery of neurological function.

Methods

Patients with acute cerebral infarction in our hospital were randomly divided into two groups. The control group used conventional treatment methods. The experimental group used path type early rehabilitation care based on conventional treatment methods and observed the curative effect.

Results

The NIHSS scores in the experimental group were significantly lower than those in the control group, and the P value was less than 0.05, which was statistically significant.

Conclusion

Path type early rehabilitation nursing has a positive effect on the treatment of patients with cerebral infarction, which contributes to the recovery of neurological function of patients and is worthy of promotion in treatment.
Thrombin generation and fibrin clot structure after vitamin D supplementation
Authors: Blondon Marc , Biver Emmanuel , Braillard Olivia , Righini Marc , Fontana Pierre , Casini Alessandro
Published: October 2019

Objective

Vitamin D deficiency is associated with increased risks of arterial and venous cardiovascular events. Hypothetically, supplementation with vitamin D may lead to a less prothrombotic phenotype, as measured by global coagulation assays and fibrin clot structure.

Methods

In this prospective cohort study, we enrolled adult outpatients attending the Primary Care Division of the Geneva University Hospitals with a severe vitamin D deficiency (25-hydroxyvitamin-D3 (25-OHD) <25 nmol/L), excluding obese patients or with a recent acute medical event. We evaluated changes in coagulation times, thrombin generation assay, clot formation and clot lysis time, 25-OHD and parathormone before and 1–3 months after cholecalciferol oral supplementation with one-time 300,000 IU then 800 IU daily. Paired t-tests with a two-sided alpha of 0.05 compared absolute mean differences.

Results

The 48 participants had a mean age of 43.8 ± 13.8 years. After supplementation, 25-OHD levels increased from 17.9 ± 4.6 nmol/L to 62.5 ± 20.7 nmol/L 6.4 ± 3.0 weeks after inclusion. Endogenous thrombin potential and thrombin generation peak values both decreased significantly (−95.4 nM × min (95%CI −127.9 to −62.8), P < 0.001; −15.1 nM (−23.3 to −6.8), P < 0.001). The maximum absorbance by turbidimetry decreased significantly (P = 0.001) after supplementation. There was no change in clot lysis time, coagulation times or plasminogen activator inhibitor-1 and homocysteine levels.

Conclusions

In severe vitamin D deficiency, a high-dose cholecalciferol supplementation was associated with a reduction in thrombin generation and an average decreased number of fibrin protofibrils per fibers and fibrin fiber size measured by turbidimetry. This suggests that severe vitamin D deficiency may be associated with a potentially reversible prothrombotic profile.
PIASy is a SUMOylation-independent negative regulator of the insulin transactivator MafA
Authors: Onishi Suzuka , Kataoka Kohsuke
Published: October 2019

Insulin plays a central role in glucose homeostasis and is produced exclusively by pancreatic islet β-cells. Insulin gene transcription is regulated by a set of β-cell-enriched transcription factors that bind to cis-regulatory elements within the promoter region, and regulation of the insulin gene promoter is closely linked to β-cell functionality. PIASy, a member of the PIAS family of SUMO E3 ligases, is thought to affect insulin gene transcription, but its mechanism of action is not fully understood. Here, we demonstrate that PIASy interacts with MafA and represses insulin gene promoter activity. MafA is a β-cell-restricted basic leucine-zipper transcriptional activator that binds to the C1 element of the insulin gene promoter. In line with previous studies showing the transactivator domain of MafA is SUMOylated, PIASy enhanced the SUMOylation of MafA. However, a SUMOylation-deficient mutant of MafA was still repressed by PIASy, indicating that this modification is dispensable for repression. Using a series of MafA and PIASy mutants, we found that the basic domain of MafA and the amino-terminal region of PIASy containing the SAP domain are necessary for their interaction. In addition, SUMO-interacting motif 1 (SIM1) at the carboxyl-terminal region of PIASy was required to repress the synergistic transactivation of MafA, Pdx1, and Beta2, transcription factors playing central roles in β-cell differentiation and function. The PINIT and SP-RING domains in the middle region of PIASy were dispensable. These findings suggest that PIASy binds to MafA through the SAP domain and negatively regulates the insulin gene promoter through a novel SIM1-dependent mechanism.
Genetic Architecture of Chilling Tolerance in Sorghum Dissected with a Nested Association Mapping Population
Authors: Marla Sandeep R , Burow Gloria , Chopra Ratan , Hayes Chad , Olatoye Marcus O , Felderhoff Terry , Hu Zhenbin , Raymundo Rubi , Perumal Ramasamy , Morris Geoffrey P
Published: October 2019

Dissecting the genetic architecture of stress tolerance in crops is critical to understand and improve adaptation. In temperate climates, early planting of chilling-tolerant varieties could provide longer growing seasons and drought escape, but chilling tolerance (<15°) is generally lacking in tropical-origin crops. Here we developed a nested association mapping (NAM) population to dissect the genetic architecture of early-season chilling tolerance in the tropical-origin cereal sorghum (Sorghum bicolor [L.] Moench). The NAM resource, developed from reference line BTx623 and three chilling-tolerant Chinese lines, is comprised of 771 recombinant inbred lines genotyped by sequencing at 43,320 single nucleotide polymorphisms. We phenotyped the NAM population for emergence, seedling vigor, and agronomic traits (>75,000 data points from ∼16,000 plots) in multi-environment field trials in Kansas under natural chilling stress (sown 30–45 days early) and normal growing conditions. Joint linkage mapping with early-planted field phenotypes revealed an oligogenic architecture, with 5–10 chilling tolerance loci explaining 20–41% of variation. Surprisingly, several of the major chilling tolerance loci co-localize precisely with the classical grain tannin (Tan1 and Tan2) and dwarfing genes (Dw1 and Dw3) that were under strong directional selection in the US during the 20th century. These findings suggest that chilling sensitivity was inadvertently selected due to coinheritance with desired nontannin and dwarfing alleles. The characterization of genetic architecture with NAM reveals why past chilling tolerance breeding was stymied and provides a path for genomics-enabled breeding of chilling tolerance.
Conciliación entre el Universo, el ser humano y la educación universitaria
Authors: Castillo Cedeño Ileana
Published: October 2019

Recibido 12 de febrero, 2008 • Aprobado 10 de mayo, 2008

 

Esta reflexión surge de la experiencia vivida como estudiante y como académica universitaria, esperanzada en la idea de que la Educación Superior, tiene la oportunidad y el potencial para reencantar y vitalizar los procesos educativos formales desde el paradigma de la complejidad, que asume los vínculos ineludibles entre el ser humano y el Universo.
Correlación entre el examen de admisión y el rendimiento en el primer año de la carrera Enseñanza de la Matemática en la UNA
Authors: Chaves Edwin , Castillo Mario , Gamboa Ronny
Published: October 2019

Recibido 5 de noviembre, 2007 • Aprobado 15 de enero, 2008Este artículo plantea la correlación entre el examen de admisión de la Universidad Nacional de Costa Rica, respecto al rendimiento de los estudiantes de primer ingreso a la carrera Bachillerato y Licenciatura en la Enseñanza de la Matemática, en los primeros dos cursos de la especialidad.En este análisis se consideran las variables: calificación en examen de admisión (total y por módulos), promedio de secundaria y rendimiento en los primeros dos cursos matemáticos de la carrera. Para determinar la relación entre las variables se utiliza el coeficiente de correlación de Pearson.Los resultados revelan que los módulos del examen de admisión presentan una baja correlación, con respecto al rendimiento en dichos cursos. Por esta razón, pareciera que el actual proceso de selección de estudiantes de nuevo ingreso a esa carrera, no está realizando una adecuada discriminación con respecto a las bases necesarias para garantizar el éxito.
Fundamentos teóricos del Pensamiento complejo de Edgar Morin
Authors: Barberousse Paulette
Published: October 2019

Ante lo que consideró la crisis del paradigma occidental de simplificación y disyunción, basado en la reducción y separación de los saberes, Edgar Morin planteó la emergencia de un nuevo paradigma de la complejidad, el cual intentaría articular y contextualizar las culturas científicas, las culturas de las humanidades y las culturas artísticas. Para llevar adelante tal propósito, se basó en la integración de ideas, conceptos y nociones provenientes de diversas fuentes teóricas.

El abordaje de la complejidad ha requerido de la resignificación dialéctica y creativa del legado de dichas teorías en una nueva síntesis que, al mismo tiempo que las integra, las eleva a un nivel cualitativamente distinto y original.
Las tecnologías de información y comunicación (TIC) desde una perspectiva social
Authors: Sánchez Duarte Esmeralda
Published: October 2019

Recibido 11 de setiembre 2007 • Aprobado 20 de noviembre 2007

 

 

 

Este artículo analiza las potencialidades de las tecnologías de la información y comunicación a la luz de sus aportes en un contexto social y básicamente rural. La autora enfoca las ventajas de la apropiación social de este recurso, sus amenazas y riesgos, así como los ejes que deben valorarse cuando se pretende un impacto en el desarrollo social. Esta perspectiva permite el abordaje de la relación entre las TIC y preocupaciones sociales tan importantes como la desigualdad social, la equidad de género y la participación comunitaria, entre otras. El artículo finaliza planteando una reflexión sobre algunos desafíos en esta materia.
Hacia una visión holística de la educación universitaria: el amor y el caos un proceso creativo para el aprendizaje
Authors: Castillo Cedeño Ileana , Marín Gutiérrez Claudia
Published: October 2019

Recibido 2 de setiembre de 2008 • Aprobado 23 de marzo de 2009 • Corregido 27 de abril de 2009

 

En este ensayo se plantea que si la educación superior quiere trascender, es necesario que desde ella se geste la idea de que el amor es el referente fundamental de la vida, y que es necesario potenciar esa esencia, más allá de lo externo y lo aparente o de temáticas aisladas dentro de planes de estudio que, muchas veces, se quedan en discursos y propuestas, y que lejos de germinar humanidad, llevan a su exterminio. Implica una visión de Amor universal que concibe el arte, como forma de expresión y de encuentro.
Utopía universitaria
Authors: Álvarez Margarita María , Maldonado Marilena
Published: October 2019

Recibido 1 de abril de 2009 • Aprobado 29 de abril de 2009 • Corregido 1 de mayo de 2009 La universidad en este nuevo milenio está afrontando numerosos cambios, dilemas y retos, y debe prepararse para enfrentarlos conservando un pensamiento utópico. En este contexto, todos los actores de la universidad deberían insistir en el derecho a ensanchar y soñar futuro. Un pensamiento utópico nos permite imaginar una universidad diferente que guíe nuestras actividades como docentes, alumnos, administrativos y autoridades, en aras de lograr la universidad soñada por todos. Esto nos motivó a plantear nuestra utopía universitaria, como un aporte a la reflexión sobre los temas que involucran la universidad.
La identidad nacional en tiempos de globalización
Authors: Arias Sandoval Leonel
Published: October 2019

Recibido 30 de julio de 2008 • Aceptado 29 de abril de 2009 • Corregido 05 de junio de 2009

 

La identidad nacional es un proceso histórico y geográfico, dinámico y en constante transformación, en otras palabras: está sujeta al cambio. Es construida por los individuos y diferentes grupos sociales que nacen o viven en un territorio mediante el discurso ideológico homogenizador y reproductor del imaginario nacional y, por otra parte, la influencia cultural expresada por las interrelaciones con otros países, la cual se ha acelerado por medio del fenómeno de la globalización. Este último aspecto tiene un impacto profundo no sólo en el campo económico, sino, también, en el intercambio de información, ideas, valores y comportamientos que asimilan las personas por medio de conductas, símbolos y significados que tienen que ver con la imitación de modelos culturales foráneos. Pero existe un punto en común en el contexto de este ensayo, y es entender que estamos ante un proceso evolutivo, dinámico y complejo, que forma parte de los procesos de socialización que vinculan las prácticas cotidianas de los individuos, mediante la diversidad y el intercambio cultural.
Currículo en el nivel preescolar costarricense: El Ciclo Materno Infantil (CMI)
Authors: Chaves Álvarez Ana Lucía
Published: October 2019

Recibido 20 de abril de 2009 • Aprobado 14 de setiembre de 2009 • Corregido 15 de octubre de 2009

 

 

Este artículo aborda la conceptuación y la descripción del Ciclo Materno Infantil como parte del nivel de preescolar del sistema educativo formal costarricense. Con el propósito de tener una visión más amplia de este Ciclo, se hace un repaso por el concepto de currículo, así como de los elementos que lo conforman, y, luego, se detallan específicamente los aspectos relacionados con el currículo de preescolar costarricense del Ciclo Materno Infantil, tomando como punto de partida el Programa de Estudio que se elaboró para atender este Ciclo en el sistema educativo de Costa Rica.
Evaluation of the hypothesis of the Monster of Troy vase as the earliest artistic record of a vertebrate fossil
Authors: Monge-Nájera Julián
Published: October 2019

The Monster of Troy, depicted in a 6th Century BC Corinthian vase, has been proposed to be the earliest artistic record of a vertebrate fossil, possibly a Miocene giraffe (Samotherium sp.). The purpose of the paper was to analyze the giraffe hypothesis using four approaches: a double-blind random design in which 78 biologists compared the vase skull with Samotherium and several reptiles; an informed survey of 30 art and science students who critically assessed the hypothesis based on images of candidate species; an objective computerized mathematical comparison of the images; and a detailed morphological comparison of the skulls. All of the participants rejected the giraffe hypothesis. The types of eyes and teeth unambiguously discard a mammal, whether fossil or living, as the model.  The model was most likely an extant carnivorous reptile of the Varanidae family.
Free Convection MHD Flow with Thermal Radiation from an Impulsively-Started Vertical Plate
Authors: Palani G. , Abbas I. A. A.
Published: October 2019

This paper investigates the combined effects of magnetohydrodynamics and radiation on free convection flow past an impulsively started isothermal vertical plate with Rosseland diffusion approximation. The fluid considered is a gray, absorbingemitting radiation but a non-scattering medium, with approximate transformations the boundary layer governing the flow are reduced to non-dimensional equations valid in the free convection regime. The dimensionless governing equations are solved by the finite element method.
Effects of Viscous and Joules Dissipation on MHD Flow, Heat and Mass Transfer past a Stretching Porous Surface Embedded in a Porous Medium
Authors: Anjali Devi S. P. P. , Ganga B.
Published: October 2019

This paper investigates the influence of both viscous and joules dissipation on the problem of magnetohydrodynamic flow past a stretching porous surface embedded in a porous medium. Analytic solutions of the resulting nonlinear non-homogeneous boundary value problem in the case when the plate stretches with a velocity varying linearly with distance, expressed in terms of confluent hypergeometric functions, are presented for the case of prescribed surface temperature. Numerical calculations have been carried out for various values of suction parameter, magnetic field, Prandtl number, Eckert number and Schmidt number. The results show that increases in magnetic parameter decrease both the dimensionless transverse velocity, longitudinal velocity and also the skin friction coefficient. Also, formation of thin boundary layer is observed for higher value of magnetic parameter.
Further Comparisons of Finite Difference Schemes for Computational Modelling of Biosensors
Authors: Britz D. , Baronas R. , Gaidamauskaitė E. , Ivanauskas F.
Published: October 2019

Simulations are presented for a reaction-diffusion system within a thin layer containing an enzyme, fed with a substrate from the surrounding electrolyte. The chemical term is of the nonlinear Michaelis-Menten type and requires a technique such as Newton iteration for solution. It is shown that approximating the nonlinear chemical term in these systems by a linearised form reduces both the accuracy and, in the case of second-order methods such as Crank-Nicolson, reduces the global error order from O(δT2) to O(δT). The first-order methods plain backwards implicit with and without linearisation, and Crank-Nicolson with linearisation are all of O(δT) and very similar in performance, requiring, for a given accuracy target, an order of magnitude more CPU time than the efficient methods backward implicit with extrapolation and Crank-Nicolson, both with Newton iteration to handle the nonlinearity. Steady state computations agree with expectations, tending to the known solutions for limiting cases. The Crank-Nicolson method shows some concentration oscillations close to the outer layer boundary but this does not propagate to the inner boundary at the electrode. The backward implicit methods do not result in such oscillations and if concentration profiles are of interest, may be preferred.
Estimation of Some Proportion in a Clustered Population
Authors: Krapavickaitė D.
Published: October 2019

The aim of this paper is to show that the traditional design-based estimator for the proportion of population units, associated with at least one subunit having an attribute of interest using the two-stage sampling design, is biased. We face such a situation in the Adult Education Survey of official statistics of the European countries when estimating the share of individuals in non-formal education, involved in job-related learning activities. The alternative design and model-based estimators are proposed.
Effect of the Presence of a Heat Conducting Horizontal Square Block on Mixed Convection inside a Vented Square Cavity
Authors: Rahman Md. M. M. , Alim M. A. A. , Saha S. , Chowdhury M. K. K.
Published: October 2019

Finite element method is used to solve two-dimensional governing mass, momentum and energy equations for steady state, mixed convection problem inside a vented square cavity. The cavity consists of adiabatic left, top and bottom walls and heated right vertical wall; but it also contains a heat conducting horizontal square block located somewhere inside the cavity. Forced flow conditions are imposed by providing an inlet at the bottom of the left wall and an exit at the top of the right wall, through which the working fluid escape out of the cavity. The aim of the study is to describe the effect of such block on the flow and thermal fields. The investigations are conducted for various values of geometric size, location and thermal conductivity of the block under constant Reynolds and Prandtl numbers. Various results such as the streamlines, isotherms, heat transfer rates in terms of the average Nusselt number, average fluid temperature in the cavity and the temperature at the center of solid block are presented for different parameters. It is observed that the block size and location have significant effect on both the flow and thermal fields but the solid-fluid thermal conductivity ratio has insignificant effect on the flow field. The results also indicate that the average Nusselt number at the heated surface, the average temperature of the fluid inside the cavity and the temperature at the center of solid block are strongly dependent on the configurations of the system studied under different geometrical and physical conditions.
A COMBINATION OF FERMENTATION METHOD AND GERMINATED BROWN RICE (ORYZA SATIVA) TO ENHANCE ANTIOXIDANT ACTIVITY OF ANGKAK
Authors: Kraboun Kitisart
Published: October 2019

This research aimed to enhance antioxidant activities of angkak by a combination of 2-step fermentation and germinated brown rice (Oryza sativa) (GBR). It was showed that an appropriate combined condition of germination time of brown rice and fermentation method of angkak was 48 hours and 2-step fermentation. The highest contents of reducing sugars used by M. purpureus were 99.43 % and the highest pigment intensity, monacolin K and GABA were 3,500.89 unit /g substrate, 99.75 and 154.19 mg/kg dry weight, respectively. Whereas, the lowest IC50 values of DPPH and ABTS were 0.07 and 0.06 mmol Trolox equivalent /mL, respectively. However, the citrinin contents of this product were 12.37 µg/kg dry weight, indicating not exceeded following the maximum allowance level in red fermented rice.
CLONING, PURIFICATION AND CHARACTERIZATION OF A NOVEL RECOMBINANT TREHALOSE SYNTHASE (TreS) FROM Acidiplasma sp. MBA-1
Authors: Azmain Al Faik Md. , Das Rana , Bo Jiang , Mu Wanmeng , Hassanin Hinawi
Published: October 2019

Trehalose, a nonreducing disaccharide, can be commercially produced using maltose from microorganisms. An intramolecular transglycosylase enzyme called trehalose synthase (TreS) can catalyze the conversion of maltose to trehalose in a single step reaction. Hence, in our study a novel gene TreS encoded with 562 amino acids was cloned from Acidiplasma sp. MBA-1 and expressed into E. coli BL21 (DE). HPLC results suggested that it could catalyze the conversion between maltose and trehalose in one step. The conversion of trehalose from maltose was about 43.62% in our study. At the same time, TreS produced about 23.85% glucose as a by-product after 10h of incubation. SDS page results showed that the purified recombinant enzyme has a molecular weight of 65.9kDa. The recombinant TreS showed its optimal activity at 40°C and its optimum pH was 6.5. Our study shows that the enzyme was not thermostable and its activity was increased by 1mM EDTA, Mn2+ and Li+ whereas Cu2+and Ni2+ strongly inhibited the enzyme activity.
BIOLOGICAL ACTIVITY OF ENDOMETABOLITES FROM SUGAR BEET (BETA VULGARIS L.) PERICARPS
Authors: Oksana Klyachenko , Artur Likhanov
Published: October 2019

Biologically active compounds of secondary metabolism are crucial for the regulation of seed germination and sprout development. The pericarp of sugar beet (Beta vulgaris L.) contains such substances. The research was focused on the extraction of the secondary metabolites and the effect of multicomponent endometabolites from sugar beet pericarps on the germination of plant seeds. The chemical composition of the metabolites and sugar beet pericarps was determined by thin-layer chromatography; differentiated separation was carried out using column chromatography and gel filtration; the total content of phenolic compounds in seed balls and pericarps was determined by the method of spectrophotometry. Pericarps of sugar beet contain a great number of phenolic compounds that have a protective function. We selected four groups of phenolic compounds of different molecular weights, the share of which averaged 5˗10 %. When studying the effect of aqueous extracts on radish seeds it was found that the eluents of the first volumes of water (3˗5 ml) showed a clear stimulating effect, while further volumes of eluents (8-9 ml) had inhibitory action. In extracts of sugar beet pericarps, phenols, flavonoids and their glycosides were found, which are highly active inhibitors and growth promoters and can be used as natural biologically active compounds.
OXIDATIVE STABILITY OF CHICKEN MEAT AFTER USE OF OREGANO ESSENTIAL OIL
Authors: Klimentová Michaela , Angelovičová Maria , Tkáčová Jana
Published: October 2019

The purpose of this study was to investigate the effect of oregano essential oil on the oxidation stability of chicken meat. Oregano essential oil was applied in a different way, on the one hand in a feed for broiler chickens and on the other hand on a surface of chicken thighs.
The oxidative stability of the chicken meat was investigated in the same way, i.e. 30 minutes after vacuum-packed at room temperature and 6 months after vacuum-packed and storage at -18 °C. The samples of the 1st experiment consisted breast and thigh muscles and skin and of the 2nd experiment thigh muscle and skin. Broiler chickens were fed during the experimental period in the control group with commercial feed mixtures and in the experimental group with similar diets as in the control group but with the addition of 0.05% oregano essential oil. Application of oregano essential oil on surface of thighs was realized 1 ml per 60 g of meat. The impact of oregano essential oil was measured by acid value. Number of acid value 30 minutes after oregano essential oil application in control group was significant higher (6.69 g KOH g -1) than in experimental group (5.39 g KOH g -1). Results of our experiments indicate that the oregano essential oil statistically significant (p 0.05) manifested an impact on the oxidative stability of chicken meat 30 minutes its action. The results impact of oregano essential oil on chicken meat stored at -18 °C for 6 months were comparable to control group, but a tendency to improve oxidative stability was indicated. Feed addition of oregano essential oil did not show any effects on oxidative stability chicken meat.
Concussion Incidence and Trends in 20 High School Sports
Authors: Kerr Zachary Y. , Chandran Avinash , Nedimyer Aliza K. , Arakkal Alan , Pierpoint Lauren A. , Zuckerman Scott L.
Published: October 2019

BACKGROUND:

Ongoing monitoring of concussion rates and distributions is important in assessing temporal patterns. Examinations of high school sport-related concussions need to be updated. This study describes the epidemiology of concussions in 20 high school sports during the 2013–2014 to 2017–2018 school years.

METHODS:

In this descriptive epidemiology study, a convenience sample of high school athletic trainers provided injury and athlete exposure (AE) data to the National High School Sports-Related Injury Surveillance Study (High School Reporting Information Online). Concussion rates per 10 000 AEs with 95% confidence intervals (CIs) and distributions were calculated. Injury rate ratios and injury proportion ratios examined sex differences in sex-comparable sports (soccer, basketball, baseball and softball, cross country, track, and swimming). We also assessed temporal trends across the study period.

RESULTS:

Overall, 9542 concussions were reported for an overall rate of 4.17 per 10 000 AEs (95% CI: 4.09 to 4.26). Football had the highest concussion rate (10.40 per 10 000 AEs). Across the study period, football competition-related concussion rates increased (33.19 to 39.07 per 10 000 AEs); practice-related concussion rates decreased (5.47 to 4.44 per 10 000 AEs). In all sports, recurrent concussion rates decreased (0.47 to 0.28 per 10 000 AEs). Among sex-comparable sports, concussion rates were higher in girls than in boys (3.35 vs 1.51 per 10 000 AEs; injury rate ratio = 2.22; 95% CI: 2.07 to 2.39). Also, among sex-comparable sports, girls had larger proportions of concussions that were recurrent than boys did (9.3% vs 6.4%; injury proportion ratio = 1.44; 95% CI: 1.11 to 1.88).

CONCLUSIONS:

Rates of football practice-related concussions and recurrent concussions across all sports decreased. Changes in concussion rates may be associated with changes in concussion incidence, diagnosis, and management. Future research should continue to monitor trends and examine the effect of prevention strategies.
Considerações sobre a justificação de Kant acerca da propriedade privada
Authors: Klein Joel Thiago
Published: October 2019

Neste artigo fazem-se algumas considerações sobre a justificação da propriedade privada na filosofia do direito de Kant. A partir da análise do conceito de lei permissiva da razão, defende-se que na filosofia do direito opera uma perspectiva teleológico- reflexionante de caráter prático, a qual permite compreender, por um lado, que a propriedade no estado de natureza seja legítima ao mesmo tempo em que é problemática, enquanto, por outro lado, o estado civil envolve a exigência de que a propriedade seja adequada segundo as condições de um sistema de justiça distributiva.