bluuebunny/crossref_metadata_2025 huggingface dataset:
Análisis de la incidencia de la violencia intrafamiliar en la problemática del adolescente infractor en la ciudad de Guayaquil: revisión de las medidas socioeducativas
Authors: CORONEL MERCEDES
Published: February 2022

RESUMEN
El objetivo del presente trabajo es establecer la problemática del adolescente infractor en relación a la incidencia de la violencia intrafamiliar en el inadecuado comportamiento de los adolescentes en la ciudad de Guayaquil; para realizar el estudio de investigación se analizaron variables de datos informativos, tipos de violencia, rendimiento escolar, etc., todos enfocados a determinar si este problema afecta a los adolescentes. Por tanto la violencia, en cualquiera de sus formas o tipos, tiene sus consecuencias, y tratándose del adolescente afecta gravemente a su comportamiento y a su normal desenvolvimiento. La falta de valores, de principios, de comunicación, de cooperación, la pasividad, la desestructuración de la familia, figura como posibles causas afectando directamente al núcleo familiar. Los resultados obtenidos en esta investigación determinan que la violencia y sus manifestaciones inciden en el inadecuado comportamiento del adolescente, con lamentables consecuencias para su vida emocional y psicológica. También se realizó un análisis de las medidas socioeducativas y el efecto en la seguridad ciudadana en la ciudad de Guayaquil.
Diseño de subprocesos para la gestión de servicio a cruceros en el destino La Habana
Authors: Sánchez Borges Yennifer , Rodríguez González Maité
Published: February 2022

En Cuba, uno de los factores claves para el eficaz desarrollo de la actividad crucerística es la correcta gestión de los procesos. La presente investigación surgió ante la problemática del inadecuado diseño de los procesos involucrados en la gestión del servicio a cruceros que provocan resultados negativos en el funcionamiento y desarrollo de esta actividad turística en el destino La Habana. Por ello se propuso, como objetivo general, diseñar subprocesos para la mejora de la gestión de servicio a crucero en el destino La Habana. La metodología propuesta surge a partir de una modificación del procedimiento propuesto por Martínez (2010) y Ruiz (2014) y fue validada por diferentes expertos. Para el desarrollo de la investigación se utilizaron una serie de técnicas y herramientas metodológicas, tales como la matriz de clasificación, la matriz de Alianzas, Conflictos, Tácticas, Objetivos y Recomendaciones, el método ABC, la ingeniería de precios y la matriz de fallas – procesos. Como principales resultados se obtuvieron las principales deficiencias que afectan la gestión de servicio a cruceros en el destino seleccionado y la propuesta del diseño de subprocesos para la mejora de los mismos.
Efectos de la pandemia en la familia y en la sociedad ecuatoriana.
Authors: Naranjo Zambrano Mónica Janeth , Morales Naranjo Israel André , Ron Amores Rafael Eduardo
Published: February 2022

Las pandemias en cualquier época de la historia han atacado a toda la población sin sesgo económico, religión o estrato social. Dentro del conglomerado familia, sus miembros sufren los efectos de la crisis quedándose desprotegidas de los avatares de estos virus que atacan a la humanidad. En muchas familias extensas donde algunos de sus miembros pueden ser vulnerables, el impacto mayor son las personas de tercera edad con enfermedades crónicas o enfermedades catastróficas; en ellos, la protección disminuye en cuanto a su sistema inmunológico. El objetivo de la presente investigación fue demostrar los efectos de la pandemia en la sociedad ecuatoriana, en donde se determinó a través del modelo matemático Chicuadrado que sí hay una relación directa entre el nivel de contagio y el aumento de fallecidos. Por ende, al no existir hasta el momento una vacuna que pare de forma paulatina el COVID-19, la salud física y psicológica se verá deteriorada, si no se hace un esfuerzo por parte de la población del cuidado y aplicación de medidas preventivas.
Valoración de la oferta turística de comunidades indígenas de la Amazonía ecuatoriana, caso de estudio Shiwakucha y Chico Copataza (Pastaza-Ecuador)
Authors: Reyes Vargas María Victoria , Ortega Ocaña Ángel Fernando , Narváez Mariela Mayancela , Moncayo Peaza Mayra Beatriz
Published: February 2022

El turismo constituye una actividad importante para la economía de varios países, entre ellos el Ecuador. En la actualidad, las presiones de las nuevas corrientes turísticas mundiales gestadas se han traducido en un creciente número de proyectos de turismo en comunidades rurales, de forma particular en localidades que cuentan con potencial turístico relevante y además se asientan poblaciones ancestrales, que con el apoyo de agentes externos, empresa privada, instituciones públicas y de cooperación internacional han logrado generar productos de interés turístico. Es fundamental identificar y evaluar la oferta turística de una localidad para determinar su grado de potencialidad conforme lo determinan varios instrumentos metodológicos. La presente investigación resume los principales resultados obtenidos en un estudio de valoración de la oferta turística en dos comunidades indígenas de la provincia de Pastaza, región Amazónica ecuatoriana; y pretenden determinar sus principales fortalezas para propiciar el aprovechamiento de sus recursos turísticos de forma sostenible. Como metodología empleada se partió de la revisión de fuentes secundarias, y seguidamente se realizó el trabajo de campo, con la aplicación de un procedimiento de evaluación de territorios, cuyos resultados determinaron la existencia de importantes recursos naturales y culturales a ser aprovechados con fines turísticos.
hábeas data como garantía procesal frente a las tecnologías de la información y comunicación: situación en el contexto ecuatoriano
Authors: Ordóñez Pineda Luis Oswaldo
Published: February 2022

La garantía jurisdiccional de Hábeas Data constituye un mecanismo procesal que atribuye protección constitucional frente al impacto de las nuevas tecnologías de la información y comunicación (TIC). Para la fundamentación de esta propuesta, la metodología aplicada parte de una investigación documental de nivel descriptivo. El objetivo se justificó a partir del análisis del régimen jurídico en Ecuador para la garantía del Hábeas Data; y, caracterización de los presupuestos jurídicos necesarios para garantizar su ejercicio en la sociedad de la información. Considerando que el habeas data y el derecho a la autodeterminación informativa constituyen un instituto de garantía de otros derechos fundamentales y que, en la sociedad de la información, no se trata de impedir el uso de las tecnologías de la información y la comunicación (TIC) sino de conciliar estas con el respeto de la dignidad humana, esta investigación destaca como principales resultados la importancia de las resoluciones de la Corte Constitucional en la materia. Cardinalmente, la libertad informática y autodeterminación informativa se presentan como instituciones jurídicas orientadas a tutelar no solamente el “acceso” sino también el “control” de la información personal frente a las tecnologías de la información y comunicación.
Лазерно-индуцированная люминесценция синтетического алмаза, легированного бором, при различной длительности лазерного импульса
Authors: Олейничук Е.А. , Данилов П.А. , Леднев В.Н. , Сдвиженский П.А. , Кузнецов М.С. , Тарелкин С.А. , Бондаренко М.Г. , Хмельницкий Р.А.
Published: February 2022

Excitation of type IIb synthetic diamond by ultrashort laser pulses in the visible range causes broadband luminescence in the UV visible range; the observed luminescence band can be attributed to the A band characteristic of diamonds. The photoluminescence spectra were obtained at different laser pulse durations (0.3–6.2 ps) depending on the pulse energy. A nonlinear dependence of the luminescence yield on the intensity of ultrashort pulses is established.
Эффективная генерация характеристического рентгеновского излучения при воздействии чирпированных фемтосекундных лазерных импульсов на медную мишень при локальном поддуве гелия
Authors: Гарматина А.А. , Назаров М.М. , Щеглов П.А. , Чащин М.В. , Алешкевич В.А. , Бравый Б.Г. , Гордиенко В.М. , Панченко В.Я.
Published: February 2022

Efficient laser-plasma line X-ray source was developed. X-ray generation was optimized by the laser pulse duration alteration and using the local helium blowing into the microplasma region on a copper target located in atmospheric conditions. Measured Кα x-ray flux of 2 •10^7 ph/pulse/2π sr and conversion efficiency of 10^-5 were achieved correspondingly.
Измерение коэффициента двухфотонного поглощения ультракоротких лазерных импульсов с длиной волны 1030 nm на центрах окраски природного алмаза
Authors: Гулина Ю.С.
Published: February 2022

An experimental study of nonlinear absorption process of ultrashort laser pulses in bulk of natural diamond has been carried out. The results of experimental studies on measuring nonlinear transmission of 1 mm thick plane-parallel plate made of diamond irradiated with focused by micro lens (NA=0.55 with focal length f'=5 mm) 0.3 and 10 ps laser pulses with 1030 nm wavelength are presented. It is shown that in this sample the main attenuation mechanism of ultrashort laser pulses with 1030 nm wavelength at intensities not exceeding 10 TW/cm2 is two-photon absorption at color centers, the absorption coefficient β2 =4.1 ± 0.3 cm/TW is determined.
Взаимодействие фемтосекундного лазерного излучения с халькогенидными стеклами различного состава
Authors: Рупасов А.Е. , Данилов П.А. , Ионин А.А. , Смирнов Н.А. , Кудряшов С.И. , Хмельницкий Р.А. , Шелыгина С.Н. , Левченко А.О. , Ширяев В.С.
Published: February 2022

The interaction of femtosecond laser radiation with a wavelength of 1030 nm with chalcogenide glasses of various compositions has been studied. The dependence of the optical transmission of chalcogenide glasses on the pulse energy and frequency has been experimentally established. The compositions of glasses for their use as an optical medium for laser micromachining in the infrared range have been established. It is shown that Ge7Se93 glass is the most suitable optical medium for spectral studies of diamond in the near and mid-IR range.
Исследование параметров прозрачных токопроводящих периодических структур, изготовленных методом лазерной абляции
Authors: Остриков С.А. , Носов П.А. , Михалёв П.А. , Макеев М.О. , Проваторов А.С. , Корольков А.В.
Published: February 2022

In this paper we report on results of an investigation of a transparent mesh electrode in a wide wavelength range 550 – 2000 nm with low electrical resistance manufactured by laser ablation with using an aluminum film with a thickness of 30 µm on a polyimide substrate with a thickness of 20 µm. The method is implemented using a fiber ytterbium nanosecond laser with a wavelength of radiation 1064 nm. The structure we have obtained has a transmittance > 50% in the designated spectrum range and the electrical resistance < 1.5 Ω/sq.
Анализ колебательно-вращательной структуры фундаментальной полосы ν-=SUB=-6-=/SUB=- молекулы -=SUP=-13-=/SUP=-CHF-=SUB=-3-=/SUB=-
Authors: Бехтерева Е.С. , Фомченко А.Л. , Ерсин Т. , Bauerecker S.
Published: February 2022

Исследован ИК спектр высокого разрешения фундаментальной полосы ν6 молекулы 13CHF3, расположенной в районе 450-750 cm-1. Анализ спектра выполнялся на основе метода комбинационных разностей основного состояния. В результате анализа было проинтерпретировано около 5500 переходов, на основе которых определено 2607 экспериментальных значений энергий колебательно-вращательных уровней в состоянии v_6=1. Полученные результаты превосходят известную в литературе информацию как по объему полученной экспериментальной информации, так и по числу извлеченных из экспериментальных данных высоковозбужденных колебательно-вращательных уровней энергии. На основе извлеченных из спектра данных были определены спектроскопические параметры исследуемого состояния, которые воспроизводят исходные данные с погрешностью 4.4·10-5 cm-1. Ключевые слова: трифторметан, колебательно-вращательный спектр, спектроскопические параметры.
Расчет релятивистских штарковских энергий и ширин водородоподобных ионов методом комплексного вращения
Authors: Мальцев И.А. , Тумаков Д.А. , Попов Р.В. , Шабаев В.М.
Published: February 2022

Выполнены релятивистские расчеты энергий и ширин нижних состояний атома водорода и водородоподобного иона неона. Расчеты проведены с помощью техники конечного базисного набора в комбинации с методом комплексного вращения. Полученные результаты сравниваются с доступными в литературе нерелятивистскими и релятивистскими значениями. Ключевые слова: эффект Штарка, комплексное вращение.
Рефракция на неоднородности газа при лазерном нагреве металла
Authors: Trofimov V. , Розанов Н.Н. , Yang Y. , Федоров С.В. , Yu J. , Веретенов Н.А.
Published: February 2022

Проведен анализ распределения показателя преломления вблизи границы нагреваемого лазерным излучением металла. Найден градиент показателя преломления газа, вызванный потоком тепла, и распределение показателя преломления в неоднородно нагреваемом газе. Выполнена оценка сноса лазерного пучка вследствие рефракции излучения в газе, показывающая возрастание величины сноса для узких лазерных пучков. Ключевые слова: рефракция в газе, нагрев газа, лазерный нагрев металла.
Designing Supportive e-Interventions for Partners of Men With Prostate Cancer Using Female Partners’ Experiences: Qualitative Exploration Study
Authors: Winter Natalie , Green Anna , Jongebloed Hannah , Ralph Nicholas , Chambers Suzanne , Livingston Patricia
Published: February 2022

Background

Partners of men living with prostate cancer (PCa) can experience a variety of unmet needs that are largely unaddressed by health care professionals. There is limited evidence to suggest which approach may be most effective in supporting partners’ unmet needs and further research is required to determine how to provide support to caregivers and how technology solutions can be designed.

Objective

This study aims to explore the experience of partners of men living with PCa and their perceptions of the potential role of information technology in supporting their needs.

Methods

A qualitative descriptive methodology using focus groups and phone interviews was used. Purposive sampling was used to recruit people attending a national conference supported by a national PCa organization. Interview guides were adapted from an existing evidence-based smartphone app for caregivers of people with colorectal cancer. Sessions were audio recorded and transcribed verbatim. A coding framework was developed, and transcripts were coded line by line into the framework. Codes within the framework were grouped into descriptive categories that were then developed into analytical themes.

Results

A total of 17 female partners participated in the study, with an average age of 64 (SD 8.5) years. The following two main themes emerged: In the first theme, that is, How technology can be shaped to support female partners of prostate cancer survivors, the content and design of the smartphone app was discussed in addressing female partners’ needs. The following four subthemes were developed: getting support from social networks and resources, the lack of relevant information, demystifying future care expectations during and following a PCa diagnosis, and delivering the smartphone app—to whom and from whom. In the second theme, that is, The benefits and barriers of technology, the suitability of smartphone apps as a supportive modality for female partners was described. This included three subthemes: the smartphone app as an appropriate modality for supporting female partners, the future anticipated benefits of using the smartphone app, and concerns for storing and accessing information on the internet.

Conclusions

A smartphone app may be a suitable modality for providing information and peer support to female partners of men living with PCa. There is a need to provide peer support for female partners in future interventions to ensure that female partners’ intimacy and daily practical needs are met.
Using Virtual Reality to Induce and Assess Objective Correlates of Nicotine Craving: Paradigm Development Study
Authors: Liu Weichen , Andrade Gianna , Schulze Jurgen , Doran Neal , Courtney Kelly E
Published: February 2022

Background

Craving is a clinically important phenotype for the development and maintenance of nicotine addiction. Virtual reality (VR) paradigms are successful in eliciting cue-induced subjective craving and may even elicit stronger craving than traditional picture-cue methods. However, few studies have leveraged the advances of this technology to improve the assessment of craving.

Objective

This report details the development of a novel, translatable VR paradigm designed to both elicit nicotine craving and assess multiple eye-related characteristics as potential objective correlates of craving.

Methods

A VR paradigm was developed, which includes three Active scenes with nicotine and tobacco product (NTP) cues present, and three Neutral scenes devoid of NTP cues. A pilot sample (N=31) of NTP users underwent the paradigm and completed subjective measures of nicotine craving, sense of presence in the VR paradigm, and VR-related sickness. Eye-gaze fixation time (“attentional bias”) and pupil diameter toward Active versus Neutral cues, as well as spontaneous blink rate during the Active and Neutral scenes, were recorded.

Results

The NTP Cue VR paradigm was found to elicit a moderate sense of presence (mean Igroup Presence Questionnaire score 60.05, SD 9.66) and low VR-related sickness (mean Virtual Reality Sickness Questionnaire score 16.25, SD 13.94). Scene-specific effects on attentional bias and pupil diameter were observed, with two of the three Active scenes eliciting greater NTP versus control cue attentional bias and pupil diameter (Cohen d=0.30-0.92). The spontaneous blink rate metrics did not differ across Active and Neutral scenes.

Conclusions

This report outlines the development of the NTP Cue VR paradigm. Our results support the potential of this paradigm as an effective laboratory-based cue-exposure task and provide early evidence of the utility of attentional bias and pupillometry, as measured during VR, as useful markers for nicotine addiction.
Prevalence of Obesity Among Adults in Jordan: National Survey (Preprint)
Authors: Al Hadidi Ansam
Published: February 2022

BACKGROUND

Obesity is a national and global public health problem in terms of morbidity, mortality, and economic burden. In 2014, 5% of deaths worldwide were attributable to obesity, with an estimated economic impact of 2.8% of the global gross domestic product. A survey in 2008 showed a high prevalence of overweight and obesity among adults in Jordan.

OBJECTIVE

This study aimed to determine the prevalence of obesity, assess its trends, and identify the factors and comorbidities associated with this condition.

METHODS

A multipurpose national household survey was conducted among Jordanian adults over 4 months in 2017. Data were collected using a structured validated questionnaire. Obesity was defined according to the International Diabetes Federation criteria.

RESULTS

This study included 4056 adults (1193 men, 29.4%; 2863 women, 70.6%). Their age ranged from 18 to 90 years, with a mean age of 43.8 (SD 14.2) years. According to the International Diabetes Federation criteria, the age-standardized prevalence of obesity was 60.4% in men and 75.6% in women. After adjusting for age, the odds of obesity in 2017 were twice the odds in 2008 in men (odds ratio [OR] 1.98) and women (OR 1.96). In the multivariate analysis, age, place of living, and marital status were significantly associated with obesity in men and women. Obesity was significantly associated with increased odds of diabetes mellitus (OR 2.1 for men; OR 2.9 for women), hypertension (OR 2.4 for men; OR 2.5 for women), elevated triglyceride levels (OR 2.5 for men; OR 4.2 for women), and low high-density lipoprotein levels (OR 2.2 for men; OR 2.1 for women) after adjusting for age.

CONCLUSIONS

The prevalence of obesity is high in Jordan, and this condition is associated with other metabolic abnormalities. Well-defined programs to manage, control, and prevent obesity as well as intersectoral action are urgently required to reverse current trends in Jordan.

CLINICALTRIAL
The Development of a Patient-Reported COVID-19 Behavioral Health Instrument (COBI) for Families: A Retrospective Study (Preprint)
Authors: Grodberg David , Bridgewater Jesse , Loo Theoren , Bravata Dena
Published: February 2022

BACKGROUND

Pediatric behavioral health needs have skyrocketed during the COVID-19-pandemic. Currently, parents do not have well-established tools to identify risk and protective factors for pediatric behavioral health needs resulting during the pandemic.

OBJECTIVE

The objective of this study was to investigate the use of a patient-reported outcomes measure to help parents understand critical risk and protective factors for their children’s behavioral health and the associations that may exist between these factors and parents’ COVID-19 exposure and workplace productivity

METHODS

We designed a 30-item COVID-19 Behavioral Health Instrument (COBI) using items from three existing, validated clinical instruments augmented by a set of questions about the COVID-19 pandemic and workplace productivity. Multivariable linear regression was used to characterize the relationship between these variables and workplace productivity. Participants (n=361) completed the COBI online between October 2020 and November 2021.

RESULTS

In the multivariable model, higher pediatric stress and time spent managing children’s behavioral health needs were associated with greater productivity loss among working parents, whereas higher family connection was associated with lower productivity loss. COVID-19 diagnoses among parents and dependents, financial impact of COVID-19 on households, and family resilience were not associated with parents’ workplace productivity.

CONCLUSIONS

The novel COBI captured child stress and family resilience and connection during the COVID-19 pandemic. Feedback provided by COBI can empower parents by providing them with insights into managing their child’s behavioral health concerns and directing them to resources to address their needs. Furthermore, insights from COBI can help both parents and their employers understand the impact childrens’ behavioral health needs can have on workplace productivity.
Trayectorias interrumpidas: motivos de estudiantes universitarios para suspender temporalmente sus estudios durante la pandemia
Authors: Díaz-Barriga-Arceo Frida , Alatorre-Rico Javier , Castañeda-Solís Fernando
Published: February 2022

La pandemia por Covid-19 ha afectado la continuidad de las trayectorias escolares de muchos estudiantes que han tenido que suspender sus estudios temporal o definitivamente. En el caso de la Universidad Nacional Autónoma de México (UNAM), el Secretario General llegó a plantear en 2020 que un 20% de estudiantes estaba en riesgo de abandonar estudios por la pandemia, mientras que para 2021 se incrementó en 228% el estudiantado que solicitó suspensión temporal de sus estudios. A fin de identificar los motivos aducidos por el estudiantado para solicitar ante el Consejo Técnico de su entidad una suspensión temporal de estudios, se condujo un estudio mixto convergente donde se analizan los motivos de 268 estudiantes de la licenciatura en Psicología de la Facultad de Psicología de la UNAM, sistemas abierto y escolarizado, para suspender temporalmente sus estudios. El propósito es comprender, desde la voz del estudiantado, la problemática que han estado vivenciando durante la pandemia sin poder lograr continuidad con la trayectoria teórica tipificada por la administración escolar. Los resultados indican la interrelación de factores asociados a las condiciones socioeconómicas o laborales del alumnado y su familia, responsabilidades y problemas en el hogar, carencia de infraestructura tecnológica apropiada, problemas de salud y emocionales, condiciones educativas y rezago académico previo, así como insatisfacción y desmotivación respecto a la educación en línea recibida y a la reducción del semestre escolar. Se discuten propuestas de atención y prevención al abandono de los estudios universitarios durante la pandemia.
Experiencias de la relación universidad-ciencia-desarrollo en los estudios sociales rurales en Cuba
Authors: Herrera-Martínez Yisel , Martínez-León Alicia
Published: February 2022

Es frecuente, en los últimos años, el estudio sobre la tercera misión de la educación superior y la pertinencia social de las universidades; varios son los modelos teóricos y las contribuciones empíricas. La comunicación analiza la interrelación entre el desarrollo científico en un campo de producción y legitimación de saberes particulares: los estudios sociales rurales y la educación superior. El uso de la sociología del conocimiento como instrumento teórico-metodológico devela las implicaciones y determinaciones sociales de la producción de conocimientos, dimensiones fundamentales en esta relación. Así, las ciencias sociales ofrecen una perspectiva diferente en el cumplimiento de la tercera misión.
De formación docente hacia subjetivación del maestro. Un giro epistémico necesario en el siglo XXI
Authors: Fandiño-Parra Yamith-José
Published: February 2022

Este artículo de reflexión cuestiona el uso de formación docente y aboga por la asunción de la subjetivación del maestro como nueva categoría. Para tal fin, el artículo revisa las bases conceptuales de la formación docente, cuestiona los mecanismos que la operacionalizan y expone perspectivas teóricas que instalan la subjetivación como nuevo objeto de estudio. Dicha subjetivación implica entender al maestro como un actor ético-político, pedagógico-intelectual, socio-jurídico, histórico-cultural y comunicativo-estético. Entre otras cosas, el artículo concluye que la comunidad educativa debe realizar un giro epistémico desde prácticas disciplinarias y mecanismos de control propios de la formación docente hacia asuntos como la conciencia histórica, la acción cultural y la enunciación promovidos por la subjetivación del maestro.
Evaluation of Antifertility Effects of Sperm Immobilization Factor from Escherichia coli on Male Mice
Authors: Chauhan Aditi , Prabha Vijay
Published: February 2022

Earlier in our laboratory, sperm immobilization factor (SIF) isolated from Escherichia coli has shown admirable contraceptive efficacy in female mice and thus generated interest in evaluating the same as a potential candidate for male contraception. Keeping this in mind, the present study was aimed at exploitation of SIF as contraceptive agent in male mouse model after intra testis administration. For this, Balb/c mice were administered with different concentrations (10, 50, 100, 200, or 400µg) of SIF and sacrificed on days 3,7,14,21,30,45,60, and 90. After sacrifice, results in terms of change in body weight, tissue somatic indices, seminal parameters, histology, hematological parameters, lipid peroxidation, testosterone level, and cytokines level were evaluated. The weight profile and TSI of all experimental groups showed no significant change. In case of seminal parameters, 400μg of SIF led to azoospermia up to 90 days and tissue histology also revealed hypo-spermatogenesis. No significant change was observed in haematological parameters after SIF (400µg) administration however, a significant decrease was observed in testosterone levels. The oxidative status and cytokines profile was also affected after SIF (400µg) inoculation. Thus, when administered via intra testis route, SIF can lead to azoospermia and poses to be a potent and safe antifertility agent.
Cloning and Characterization of Pyridoxal Kinase from Geobacillus sp. H6a
Authors: Pasri Jumnong , Champasri Chamaiporn , Trongpanich Yanee
Published: February 2022

Pyridoxal kinase encoded by pdxK gene, is the important key enzyme in the salvage pathway of vitamin B6 biosynthesis. The enzyme catalyzes the phosphorylation of the 5′ alcohol groups of free form vitamin B6 into their 5′-phosphate forms that requires metal ion and ATP. Pyridoxal kinase have been reported in many organisms except in the thermophilic bacterium. Therefore, this study aimed to clone, express and characterize pyridoxal kinase of Geobacillus sp. H6a isolated from the hot spring in the North of Thailand. The GhpdxK gene (810 base pairs) was inserted into pET28a(+) plasmids at restriction site of NdeI and BamHI and transformed into E.coli BL21(DE3). The expressed pyridoxal kinase of this bacterium exhibits a homodimer, in which each subunit had a molecular mass of about 32 kDa when examined by SDS-PAGE and gel filtration. The enzyme showed maximal activity at 70°C and at pH 8.0. The expressed enzyme obtained in this study was found to be more active (>50%) in the broad pH range (6.0 – 9.0) than those previously reported. This enzyme prefers Mg2+ and also accepts other cations to the less extent. Under optimal conditions, the expressed enzyme has higher affinity toward PN (20 ± 1.35 µM), while it showed the same affinity to pyridoxal (100 ± 0.76 µM) and pyridoxamine (100 ± 1.21 µM). The Km value for ATP and 4-amino-5-hydroxymethyl-2-methylpyridine were 8.99 ± 1.76 µM and 19 ± 0.85 µM, respectively. With high activity at high temperature and active in the broad pH range, it could be considered as a potential candidate for future application particularly bioconversion of vitamin B6.
Survey Paper on Enhancing Information Based Learning System Using Educational Data Mining
Authors: Chandra Mukesh , Gupta Shital
Published: February 2022

Abstract: Educational Data Mining (EDM) is a platform for literacy and exploring from data to get essential information and induce the unique pattern which will help study, assay and skill pupil performance in academic. Colourful data mining styles can be apply to sludge the data from data storehouse to apply data mining ways which helps pupil for taking opinions for better outgrowth. The model which can be use in Educational data mining must be a formative and descriptive model applied on data storehouse and must gather veritably accurate data for enhance the performance of study. Retrogression analysis can also be used to develop a model to use as study tool; it can be used dependent or independent variables. If the model is enough perfect for using as study tool also every cluster of data must be use that model to cost the attendant data. Occasionally educational data mining is considered as overall performance of scholars, but each pupil has its own position of understanding the contents so that system must also be enough flexible for every one; for fulfilling this demand educational system can be complex, but once it's constructed also it'll helpful for everyone. This paper is describing colourful data mining ways and their proper uses. Keywords: Educational Data Mining, Cluster Analysis, Classification, Regression Model, K-Means.
Synthesis and Characterization of Polyester and Rice Husk Fiber Reinforced Polymer Composites for Structural Applications
Authors: Kancharla Bhanu Hari Vardhan
Published: February 2022

Abstract: In current years composites have concerned considerable importance as a potential operational material. The composite materials are replacing the traditional materials, because of its superior properties such as low thermal expansion, high tensile strength, high strength to weight ratio ,Low cost, light weights, high specific modulus, renewability, and biodegradability are the most basic & common attractive features of composites that make them useful for industrial applications. The composite have generally minimal effort of creation, simple to create and better-quality contrast than perfect polymer tars. The developments of new materials are on the anvil and are growing day by day. In this study, Woven roving mats (E-glass fiber orientation (-45/45, 0/90, 45/45),UD450GSM) were cut in measured dimensions and a mixture of Polyester Resin, Methyl Ethyl Ketone Peroxide (MEKP), Cobalt and rice husk powder is used to manufacture the glass fiber reinforced composite by hand lay-up method. Mechanical properties such as tensile strength, impact are evaluated Keywords: Epoxy Resin, e-glass fibre, fly ash, Biodegradability, Mechanical Properties
De la alfabetización a la literacidad crítica. Entrevista a Daniel Cassany.
Authors: Caballero Soledad
Published: February 2022

La escritura ha sido su objeto de estudio durante mucho tiempo, pero hoy sus investigaciones se enfocan en la lectura. En particular, investiga lo que se denomina literacidad crítica y lo hace desde una postura teórica diferente a la que adoptara con anterioridad. En la Universidad Pompeu Fabra (Barcelona) trabaja junto a un equipo de personas que investigan temas tales como la lectura de la ideología, cómo se construye un no-lector, la especialidad odontología como género discursivo o las llamadas ‘prácticas vernáculas' entre los  estudiantes universitarios.
“Invento, fantaseo, con un anclaje en la realidad”. Entrevista a Carlos Tanco
Authors: Giaimo Mariangela
Published: February 2022

La imagen que tiene de sí mismo es la una persona con un calderín, tratando de pescar las palabras justas. Se considera uno más en toda la bolsa de lo que critica, y asegura que es muy aburrido y tímido. Sin embargo, Carlos Tanco hace reír: desde la radio, la prensa escrita, el tablado y, ahora también, desde la televisión.
El arte de hacer vidrieras. Una aproximación desde la comunicación
Authors: Hernández Montañés Soledad , Strasser María Inés
Published: February 2022

Una vidriera es un mensaje visual y como tal puede ser analizado desde el punto de vista de lacomunicación. El texto que sigue propone, desde esta disciplina, una mirada al arte de hacer vidrieras.
Para una semiótica de la comunicación estratégica
Authors: Fabbri Paolo , Montanari Federico
Published: February 2022

La semiótica propone un modelo de análisis para las situaciones de conflicto en tanto situaciones de comunicación estratégica. Dicho modelo permite analizar cómo las voluntades en conflicto se constituyen, se afirman, se esconden, se persiguen y luchan. Traducido por Mariangela Giaimo para dixit, con expresa autorización de los autores.
Lower Bounds on Stabilizer Rank
Authors: Peleg Shir , Shpilka Amir , Volk Ben Lee
Published: February 2022

The stabilizer rank of a quantum state ψ is the minimal r such that |ψ⟩=∑j=1rcj|φj⟩ for cj∈C and stabilizer states φj. The running time of several classical simulation methods for quantum circuits is determined by the stabilizer rank of the n-th tensor power of single-qubit magic states.We prove a lower bound of Ω(n) on the stabilizer rank of such states, improving a previous lower bound of Ω(n) of Bravyi, Smith and Smolin \cite{BSS16}. Further, we prove that for a sufficiently small constant δ, the stabilizer rank of any state which is δ-close to those states is Ω(n/log⁡n). This is the first non-trivial lower bound for approximate stabilizer rank.Our techniques rely on the representation of stabilizer states as quadratic functions over affine subspaces of F2n, and we use tools from analysis of boolean functions and complexity theory. The proof of the first result involves a careful analysis of directional derivatives of quadratic polynomials, whereas the proof of the second result uses Razborov-Smolensky low degree polynomial approximations and correlation bounds against the majority function.
Alternatif Desain Kegiatan Laboratorium Materi Kladogram Berbasis ANCORB
Authors: Pratiwi Purnamaulida , Supriatno Bambang , Anggraeni Sri
Published: February 2022

Practicum Activity Design is very useful for students when carrying out practicum. The design can stimulate the formation of a concept that has previously been obtained. This study aims to analyze several laboratory activity designs, then conduct trials and reconstruct Practicum Activity Design which refers to the 2013 curriculum. The research method used is descriptive quantitative. The sample used in this study as many as nine Practicum Activity Design cladograms selected using purposive sampling technique. The research instrument used is the analysis section relevance, competence, construction of knowledge and practical analysis that has been in judgment by experts. The results showed that the relevance aspect already refers to KD, namely the preparation of a cladogram based on the principle of classification. But in some other aspects it has drawbacks. These deficiencies include unclear tools and materials, unclear working procedures, difficult data interpretation processes. So that it does not help students construct knowledge of concepts, principles and theories from the facts that have been obtained. Based on these problems, the DKL cladogram needs to be reconstructed from its relevance, competence, knowledge construction and practical analysis.
Abstrak. Desain Kegiatan Praktikum sangat bermanfaat untuk peserta didik ketika melaksanakan praktikum. Desain tersebut dapat menstimulasi pembentukan konsep yang sebelumnya telah diperoleh. Penelitian ini bertujuan untuk menganalisis beberapa Desain Kegiatan Laboratorium lalu lemakukan ujucoba serta merekonstruksi desain yang mengacu pada kurikulum 2013. Metode penelitian yang digunakan adalah deskriptif kuantitatif. Sampel yang digunankan pada penelitian ini sebanyak sembilan DKL kladogram yang dipilih menggunakan teknik purposive sampling. Instrumen penelitian yang digunakan adalah rubrik analisis relevansi, kompetensi, konstruksi pengetahuan dan analisis praktikal yang telah di judgment oleh ahli. Hasil penelitian menunjukkan bahwa aspek relevansi sudah mengacu kepada KD yaitu penyusunan suatu kladogram berdasarkan prinsip klasifikasi. Tetapi pada beberapa aspek lain memiliki kekurangan. Kekurangan tersebut seperti alat dan bahan yang tidak jelas, prosedur pengerjaan yang tidak jelas, proses interpretasi data yang sukar dikerjakan. Sehingga belum membantu peserta didik mengkonstruksi pengetauan konsep, prinsip dan teori dari fakta yang telah diperoleh. Berdasarkan permasalahan tersebut, DKL kladogram perlu untuk dilakukan rekonstruksi dari relevansi, kompetensi, konstruksi pengetahuan dan analisis praktikalnya.
Investigating the Plights of Nigerians in Diaspora: A Case Study of Nigerians Studying in Malaysian Universities
Authors: SULEIMAN YUSUF , IBRAHIM KAWULEY MIKAIL
Published: February 2022

In view of researchers’ personal experiences and report on numerous problems of Nigerians in diaspora, this study investigates the plights of Nigerians in diaspora with specific focus on Nigerians studying in Malaysian universities. In order to select participants for the study stratified, purposive and convenience sampling techniques were used to select 10 Nigerian students from three Malaysian universities, namely Universiti Utara Malaysia (UUM), Universiti Malaya (UM) and Insaniah University College. Instrument used to collect data from the participants include interview and observation. Specifically, observation method was used to complement the interviews findings. Our findings revealed that Nigerians are faced with numerous challenges, which include apathetic attitude of Nigerian embassy in Malaysia, lack of part-time job opportunities, high exchange rate and visa issue. Also, our findings suggest solutions to the problems of Nigerians in Malaysia. They include quick response to students’ challenges by the Nigerian embassy, availability of part-time job opportunities for Nigerians and other international students and issuance of 2 years visa. The study recommends that Nigerian embassy in Malaysia should have a comprehensive list of Nigerians schooling in various Malaysian institutions with a view to enable them to have an accurate data of their citizens. By doing so, the embassy will be able to use the data to attend to students’ requests at all times.
The Effect of Different Approaches to Learning Strategy Instruction on Vocabulary Development by EFL learners
Authors: NSHIWI DARIN
Published: February 2022

This research falls within the area of teaching English as a foreign language (FL). It focuses on the short-term effects of memory and cognitive strategies on learning vocabulary and sheds light on the approaches adopted by EFL teachers while teaching these strategies. It investigates whether these strategies are taught implicitly, explicitly or both. To conduct this study, two main tools were applied: the first was a questionnaire to evaluate the memory and cognitive strategies used by EFL teachers and intermediate learners; the second was a vocabulary test to investigate the effect of using memory and cognitive strategies on vocabulary learning. These tools were applied to the sample that included 36 intermediate learners who were divided into experimental and control groups and 30 EFL teachers. The data obtained was dealt with descriptively and analytically. The findings show that training students to use memory and cognitive strategies explicitly enhances vocabulary learning more than implicit instruction.
Managing Quantity or Quality? Students’ Voices for English Subject in the National Standardized Exam
Authors: FRIDIYANTO FRIDIYANTO , HIDAYAT MARZUL , KHAIRANI MIFTAHUL , YOSE IMELDA
Published: February 2022

The issue of quality is always a significant one and it will continue to be one of the predominant points of debate in education. Through a qualitative method, this study aimed to explore the experiences and the meaning that senior high school students faced in the national standardized exam for English subject. The data were collected by demographic background questionnaire and in-depth interviews with fifteen participants. The demographic data were analyzed descriptively, while the interviews were analyzed by within-case and cross-case analyses. The results of the data analysis revealed several themes such as cheating as bad consequences in the national standardized exam, it is  like a yearly educational festival and formality, sharpening  students memories, spending much money and time for English extra classes, dishonesty: spreading the key answer illegally, teachers more focus on the national exam, it is like a symbol of government power. Recommendations for taking some actions regarding the effect of the national standardized exam are offered.
The Role of Clinical Supervision: Teaching Basic Obstetric Ultrasound for Undergraduate Medical Students
Authors: Herlambang Herlambang , Fitri Amelia Dwi , Shafira Nyimas Natasha Ayu , Puspasari Anggelia , Tarawifa Susan
Published: February 2022

This study aimed to find the impact of clinical supervision on the achievement of medical student competence in basic obstetric ultrasound examination skills by using DOPS as the assessment method. Students’ knowledge related to basic obstetric ultrasound examination in the beginning and in the end of their 10 weeks clinical rotation in Department of Obstetrics and Gynecology were assessed by using pre-test and post-test questionnaire. By employing mixed methods, one group pre and post-test design was positioned to assess student knowledge, one group post-test design to assess student’s skills achievement and qualitative study to explore student perception about the new learning method we offered. The collected data were analyzed with computer program; means and standard deviation were calculated as descriptive parameters. Parametric test were used to test the hypothesis. The pre-post results were compared by using Wilcoxon test. The results showed a significant difference in the score of pre-test and post-test. Qualitative data showed positive perception. Clinical supervision as teaching method together with learning media in the form of module and ultrasound video gave positive result to improve achievement of student’s competence in basic obstetric ultrasound examination skills.
Structured Educational Program and Peripheral Intravenous First-Time Insertion Rate in Saudi Arabia
Authors: M. Domingo III Nicanor , Collantes Leila
Published: February 2022

Peripheral intravenous insertion (PIV) is one of the most common clinical procedures which nurses receive little formal training. It is said that more than a quarter of first-time insertion rate (FTIR) fail (Hess 2010), thus, patient experience is at risk if this is not performed by a trained staff. This study aimed to explore if a Structured Educational Program (SEP) was effective to increase a hospital’s FTIR which has a failing international benchmark scores. It used a quasi-experimental design and pre-experimental one-group pretest post-test to examine the pre and post-test data set among 160 respondents. It was found out that the most of respondents are Filipinos in their 30’s who have bachelor’s degree. They have a decade or less of experience; have had no PIV training in their home country; and have less than five daily insertions. It was revealed that the SEP was effective knowledge and skills improvement. Ages, nationality, years of experience, and specialization were found to be related to improve knowledge; while nationality, licensure exam ratings, frequency of PIV insertions, and relevant trainings were associated on an enhanced skill.
The Utilization of ICT as Pedagogical and Professional Competencies to Support the Professionalism of Chemistry Teachers
Authors: Dharma Wahyuni Rizka , Copriady Jimmi , Linda Roza
Published: February 2022

This purpose of this study was to determine the influence of ICT utilization as pedagogical and professional competencies to support the professionalism of chemistry teachers. This study used a quantitative method through a survey approach with 157 chemistry teachers. The survey was conducted to obtain the data through questionnaires. The results indicated that the ICT utilization in the learning as pedagogical and profesional competencies significantly influenced toward the professionalism of chemistry teachers with the sig. 0,000<α = 0.05. Simultaneously, the use of ICT in the learning as a pedagogical competence and the ICT utilization in communicating and developing themselves as professional competencies had a significant effect on supporting the professionalism of high school chemistry teachers that was indicated by the analysis result of the F 0,000 test probability value. It was smaller than α = 0.05. The use of ICT needs to be improved by designing various efforts in the learning process i.e.,  conducting an education and ICT training to achieve the teacher skills in utilizing the ICT to support the teacher professionalism. The chemistry teachers should utilize the ICT in learning and follow an ICT training. The local government has to fix the facility and infrastructure as well as the evaluation and regulation of the ICT utilization in school to suppert the teacher professionalism.
Studying Ecosystem in Senior High School: The Utilization of CirGi Learning Model to Enhance Mastery of Biological Concepts
Authors: Harahap Lia Junita , Komala Ratna , Ristanto Rizhal Hendi
Published: February 2022

Ecosystem concepts are not a science that is far from daily life. Therefore, teachers need an innovation that can support students’ mastery of the ecosystem concept. This study aims to analyze the influence of the CirGi (Cooperative Integrated Reading, Composition, and Guided Inquiry) learning model on the learners’ ecosystem concept mastery. This research uses a quasi-experiment method with a pre-post control group design with a sample of 104 students. Data collection is carried out using an instrument of ecosystem concept mastery in the form of multiple choices so that questions could cover all the materials. The data analysis technique used is an independent sample t-test. The conclusion of this study is that there is a significant influence of CirGi’s learning model on the learners’ mastery of ecosystem concept. The application of CirGi learning model on ecosystem material can revive reading activities along with environmental awareness.