bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative morpho-anatomical characteristics and phytochemical constituents of Aloe vera Barbadensis miller and Aloe vera var. Chinensis (haw) Berger
Authors: Wahua C. , Ukomadu J.
Published: May 2021

This study was set to investigate the comparative morphological and anatomical characteristics of Aloe vera barbadensis Miller and Aloe vera var. chinensis(Haw) Berger. These are evergreen perennials belonging to Asphodelaceae Juss. in the Order Asparagales Link. The former measures up to 80±20cm in height with lanceolate leaves and rosette habit. The leaves have spiny margins decorated with whitish spots on both foliar surfaces which disappear at maturity. The tubular flowers are orange and densely clustered at the stem apex; corolla is yellowish, tubular and up to 2.5±0.5cm in length whereas the latter is 40±10cm in height with rather lightly green rosette leaves and foliar white spots on foliar surfaces maintained at maturity. The two plants are fleshy and succulent with mild bitter taste. Leaves are amphistomatic with tetracytic sunken stomata. The cells of the epidermal layer are nucleated mostly hexagonal and includepentagonal, heptagonal to square or rounded. Stomatal indices for Aloe vera barbadensis adaxial foliar layer is 7.92 % and abaxial 4.76% while Aloe vera var. chinensis adaxial surface is 7.92% and abaxial 3.85%, not significant. Anatomical studies revealed the cell  types from the epidermis, hypodermis, general cortex to the pith are similar in mid-ribs, petioles, stems and nodes. The roots have piths and vasculation is closed type. Phytochemical studies showed the presence of Alkaloids, flavonoids, saponins and tannins in both species, whereas combined anthraquinone was observed absent in both plants. Cardenolide, phlobatannins and free anthraquinones were present in Aloe vera var. chinesis but absent in Aloe vera barbadensis while cyanogenic glycoside was absent in Aloe vera var chinensis but present in Aloe vera barbadensis. The species are used in natural medicine. The information contained in this research would further aid in the taxonomic delimitations of these plants.

Keywords: Comparative, Aloe vera, phytochemistry, morphology, anatomy, Asphodelaceae.
Effect of sodium azide on Bambara groundnut (Vigna subterranean (L.) verdc.) as revealed by sodium dodecyl sulphate polyacrylamide gel electrophoresis (sds-page)
Authors: Olawuyi Odunayo Joseph , Naworu Juliet Ese , Feyisola Roseline Tolulope
Published: May 2021

This study investigated the mutagenic effects of Sodium Azide (NaN3) on the agromorphological and protein content of eight Bambara groundnut genotypes. The seeds of six genotypes; TVSu-86, TVSu-91, TVSu-186, TVSu-235, TVSu-242, TVSu-350 were collected fromthe International Institute of Tropical Agriculture (IITA) and two landraces from Abia State and Enugu State North East, Nigeria local markets. The seeds were treated with five concentrations: 0.00%(control), 0.01%, 0.03%, 0.05% and 0.07% of NaN3 after pre-soakingfor 6hrs in distilled water and sown in pots arranged in a Complete Randomized Design with three replicates. There was reduction in germination percentage and growth characters as concentrations of NaN3 increases. Early flowering was recorded at 37 days mutated with 0.07% of NaN3 compared to control which flowered late at 42 days. NaN3 (0.07%) caused lethal effect on Abia and Enugu landraces. There was no significant (P>0.05) difference in yield traits among mutants and control. Mutant seeds significantly (P<0.05) increased protein content (19.12%) at 0.05% of NaN3 compared to control (18.5%). The number of seeds (0.99), seed yield (0.89) and pod yield (0.96) strongly correlated with seeds per pod (0.85). The SDS-PAGE revealed the presence of polypeptide bands in mutants compared to control. TVSu-235 and TVSu-350 genotypes had higher tolerance and yield traits to 0.01% concentration of NaN3, thuscould be further improved in subsequent breeding.

Keywords: Bambara groundnut, Sodium azide, SDS-PAGE, polypeptide bands.
Comparative studies on Polyaromatic Hydrocarbons (PAHS) in some edible oil (shea butter, coconut oil and palm kernel oil) sold in Nigeria
Authors: Akomah-Abadaike O.N. , Iwuji O.B.
Published: May 2021

Polyaromatic hydrocarbons (PAHs) are ever-present lipophilic substances, having varying levels of concentration in edible oils. Shea butter, coconut oil and palm kernel oil are used in Africa as component of traditional ointment. The study evaluated the concentration of polyaromatic hydrocarbons in Shea butter, coconut oil and palm kernel oil using gas chromatography with flame ionization detector. The polyaromatic hydrocarbons identified and quantified are: napthalene, acenaphthene, fluorene, phenapthrene, fluoranthene, pyrene, chrysene for Shea butter samples; napthalene, acenaphthene, phenanthrene, anthracene, pyrene for coconut oil samples while palm kernel oil samples have napthalene, acenaphthene, acenaphthylene,fluorene, phenanthrene, fluoranthene, pyrene,  benzo(a)anthracene, chrysene, benzo(b)fluoranthene and benzo(k)fluoranthene, The concentration of the sum of PAHs of Shea butter ranged from 7.63 - 44.71 ppm, coconut oil samples 7.81 - 19.24 ppm and palm kernel oil samples 25.09 - 71.55 ppm. Shea butter, coconut oil and palm kernel oil samples have concentration of benzo(a)pyrene above the set maximum permissible limit as revealed in the study. It is important that further research on the reduction and/or elimination of PAHs in Shea butter, coconut oil and palm kernel oil be developed.

Keywords: Edible oil, Polyaromatic hydrocarbons, Benzo(a)pyrene, Carcinogenic, Medicinal
Validación de un instrumento de práctica docente no presencial en Formación Profesional.
Authors: Racero Montes Francisco J. , Ramos Corpas Manuel Jesús , Castillo García Manuel
Published: May 2021

La pandemia de COVID-19 está amenazando gravemente la salud de la humanidad provocando consecuencias de toda índole. Un sector bastante afectado, es el educativo. El aprendizaje del alumnado se ha visto reducido en el último cuatrimestre del curso escolar 2019-20, y probablemente los métodos de enseñanza que han tenido que forzarse en este tiempo tengan que repetirse para el curso próximo, si la ciencia no encuentra un remedio rápido para combatir el virus. En este contexto las administraciones públicas en el marco de sus competencias constitucionales están desarrollando distintos modelos educativos para que cada centro educativo gracias a su autonomía elija la mejor opción de acuerdo con el tipo de enseñanzas que ofertan y los distintos niveles educativos que desarrollan. El objetivo del presente estudio, ha sido desarrollar un instrumento válido y fiable para evaluar la práctica docente no presencial en Formación Profesional. El enfoque metodológico corresponde a una investigación por encuesta transversal de carácter cuantitativo. Se ofrecen los diferentes resultados de los valores de alfa de Cronbach, así como una serie de estadísticos descriptivos. La estructura factorial de esta escala es analizada mediante análisis factorial exploratorio, análisis confirmatorio utilizando una muestra de 329 profesores. Los análisis realizados muestran que la escala se compone de seis factores: índice de actitud del alumnado-profesorado, atención a la diversidad, índice de coordinación docente, índice de eficacia virtual, índice de orientación y tutoría, índice de práctica docente virtual.
La culture de l’eau : ressource monétaire ou fait social?
Authors: NZINO MUNONGO VICTORINE GHISLAINE , MUNONGO MARTHA ENEKE
Published: May 2021

L’eau est perçue comme le minimum que l’on puisse offrir à son invité en guise de courtoisie. Par ailleurs, la gratuité de la ressource poussait certain-e-s à voir en l’eau une ressource naturelle inépuisable dont l’humain peut jouir à sa guise. L’introduction des infrastructures de nouvelles techniques d’exploitation et de production dans le contexte social africain impose une gestion rationnelle de l’eau en y intégrant le souci majeur de l’approvisionnement des populations en une eau de qualité. Les réseaux d’adduction d’eau, gérés par des centres de traitement et de distribution, sont installés à cet effet. Ces équipements apportent une modification des usages coutumiers africains liés à cette ressource. Désormais, il s’agit de prendre l’eau comme une ressource monétaire en investissant, d’une part, pour l’approvisionnement maximal de la population et, d’autre part, pour la maintenance des installations. Une modification qui requiert une implication de la population dans les nouvelles dispositions de gestion et d’accès à l’eau. L’enjeu actuel est d’empêcher la prédominance de la considération de la ressource d’eau en bien purement économique au détriment de sa fonction sociale. Dans un tel contexte, l’hydraulique a été proposée comme un élément devant figurer parmi les Objectifs de développement durable qui adopte l’approche bottom-up dans l’élaboration et la mise en œuvre des politiques hydrauliques à l’inverse de l’approche top down attribuée aux Objectifs millénaires du développement.
Les violations des droits humains par les entreprises multinationales et leurs filiales en Afrique Subsaharienne
Authors: DOUNGUE MARTIAL JEUGUE , BETCHEM À BETCHEM FRITZ
Published: May 2021

Depuis six décennies environ que les États d’Afrique subsaharienne ont acquis leur indépendance, de multiples projets d’industrialisation ont été initiés suite à la découverte entre autres d’une grande quantité de matières premières, en l’occurrence les ressources naturelles. Dans le même temps, on a aussi noté de nombreuses années d’atteintes aux droits humains dans le triptyque multinationales/populations/ressources naturelles. Ces violations portent notamment sur les droits fonciers des populations, la dégradation de l’environnement, le droit à un environnement sain et le droit à la santé. Afin de garantir le respect des normes juridiques qui protègent les droits humains, l’application des textes par les multinationales est impérative, car l’aspect saillant de ces violations touche davantage les femmes qui paient un lourd tribut. Bien que le cadre juridique relatif à la protection des droits humains face aux activités des multinationales soit défini, diverses violations persistent. Il est ainsi question de s’interroger sur la récurrence de celles-ci, d’où l’intérêt de cet article qui tente de saisir la portée du respect par les entreprises multinationales des droits humains en Afrique subsaharienne, avec une approche qui ne laisse pas en retrait le genre et une démarche qui fait appel au droit international.
The Role of Continuous Professional Development in Improving Secondary School Teachers’ Teaching and Learning Competencies to Deliver Quality Education in Ethiopia: A Case of Secondary School
Authors: Wolde Berku
Published: May 2021

The main purpose of this study was to understand the role of Continuous Professional Development (CPD) in improving secondary school teachers’ teaching and learning competencies at Basso Preparatory and Secondary School (BPSS). In so doing, single case study design was employed, and the participants of the study were teachers, principals, supervisor and CPD coordinator of the school and experts at district and Zonal levels, and the data sources were CPD framework and toolkit, portfolio module, teachers’ CPD plans and portfolios. The data collection methods were questionnaire, interview and document analysis, and the data collected were analysed. The result depicted that CPD has improved the teaching competencies of some teachers whereas there are some teachers who have problems in their teaching methods, assessment and evaluation, and subject area knowledge. Besides, the findings from the document analysis disclosed that there are also gaps in the framework and toolkit not to including all the expected teaching and learning competencies in line with the current literature. The portfolio module was not also well conceptualized. This implies that CPD is not playing its best role to developing teachers’ teaching and learning competencies as a whole to deliver quality education at BPSS, and implications for the stakeholders at different levels were forwarded.
Ethnographic "Experimental Collaborations" As Practitioner Methodology
Authors: Poveda David , Morgade Marta , Cruz Ines , Pineiro Natalia , Gallego Rebeca
Published: May 2021

In this paper we discuss emergent cross-cutting themes across a series of educational intervention projects in which practitioners-in-training adopted and adapted in their proposals and work design the logic of ethnographic experimental collaboration (XCOL) and participatory action research (PAR) (Clark, 2010; Estalella & Sánchez-Criado, 2018) perspectives. We were involved in three interventions developed in Madrid (Spain) across formal and informal learning contexts as part of the internship/practicum of future educational psychologists. Our work was designed in response to the identified needs and demands of the internship sites. Yet, as educational interventions, they were explicitly conceptualized and implemented in ways that depart substantially from the common expectations of process-product educational intervention and dominant ways, at least in Spain, of constructing educational accountability (cf. Berliner, 1989; Gage & Needels, 1989). We unpack four themes relevant across the three projects, which emerged from our joint discussions of the three interventions: (a) how "outcomes/results" are reconstructed in XCOL/PAR educational interventions, (b) the transformations in our emergent professional identities, (c) the place of different materialities and expressive media in the work we planned (d) how space-time constraints were construed in our unfolding projects.
PENERAPAN MODEL WATERFALL PADA SISTEM INFORMASI BEASISWA BERBASIS WEB
Authors: Raya Agustina Mardeka
Published: May 2021

Kemajuan teknologi informasi yang berkembang di dunia pendidikan, membuat kampus Atma Luhur selalu ingin mengembangkan teknologi informasi termasuk dalam pemberian beasiswa. Informasi beasiswa pada kampus Atma Luhur belum banyak diketahui oleh mahasiswa dan calon mahasiswa baru. Saat ini tidak ada sistem yang terkomputerisasi untuk membantu proses pendaftaran serta pengelolaan beasiswa pada kampus Atma Luhur. Oleh karena itu dibutuhkan suatu sistem informasi beasiswa berbasis web agar mempermudah mahasiswa untuk mendapatkan informasi serta melakukan pendaftaran beasiswa sehingga setiap mahasiswa berhak untuk mendaftar dan mendapatkan beasiswa untuk membantu bagian kemahasiswaan dalam mengelola data. Untuk menunjang sistem beasiswa ini penulis menggunakan model waterfall dalam proses penganalisa sistem.  Pemodelan perangkat lunak digambarkan dengan UML (Unified Manipulation Language).Hasil dari penelitian ini adalah Sistem Informasi Beasiswa berbasis web menggunakan Model waterfall dengan Metode berorientasi objek. Pengujian perangkat lunak menggunakan metode User Acceptance Test mendapatkan hasil sebesar 84%.
Diagnóstico clínico: competencia axiológica clave en la formación profesional del estudiante de odontología
Authors: Otazú Aldana Magister Claudia Gabriela , Zuta Patricia Medina , Acosta Angel Deroncele
Published: May 2021

Introducción: La competencia de diagnóstico clínico, se revela como núcleo esencial de la práctica profesional del odontólogo, en tanto se constituye en premisa de una  intervención clínica-odontológica eficiente, de ahí que  desde el pregrado, el proceso formativo del estudiante de odontología deba garantizar el desarrollo de esta competencia desde sus potencialidades formativas y axiológicas, articulando un proceso de enseñanza- aprendizaje de conocimientos, habilidades, valores y valoraciones que le permitan al estudiante desplegar el diagnóstico clínico como un modo de actuación profesional, ético, responsable y sostenible. 

Objetivo: El presente estudio despliega el método de análisis documental en la formulación de una heurística orientadora y una indagación estratégica, como soporte de una hermenéutica de sistematización de fuentes científicas vinculadas a la política educativa vigente en relación con la formación del estudiante de odontología.

Desarrollo: El estudio se perfila en la necesidad de fomentar una actitud de compromiso ético del estudiante de odontología como futuro agente de transformación social, ello supone la potenciación del pensamiento crítico-reflexivo, y el tener en cuenta la competencia de diagnóstico clínico desde una perspectiva axiológicoformativa.
Quality of Malaria and HIV Rapid Diagnostic Test kits (RDTs) in health facilities and medicines outlets in the Greater Accra Region of Ghana
Authors:   Technical Operations Division, Food and Drugs Authority, Accra, Ghana, AO Amartey
Published: May 2021

Background: Questions remain on the quality of malaria and HIV Rapid Diagnostic Test kits (RDTs) stocked and used in health facilities in Ghana. The Food and Drugs Authority (FDA) in Ghana is mandated to regulate RDTs for quality. By this, all RDTs must be registered, and each brand given a unique registration number. This study aimed to assess the quality of malaria and HIV RDTs in health facilities in the Greater Accra Region of Ghana, using FDA standards. Method: Data was obtained using structured questionnaire from 400 facilities in three districts in the Greater Accra region. A multi-stage sampling procedure was used to select the health facilities including retail medicine outlets. Information on the registration status of the RDTs and conditions under which they were stored were gathered. RDTs kept in air conditioned or well-ventilated rooms were considered as being stored under good condition. RDTs, registered by the FDA and appropriately stored were considered to be of good quality. Data was coded, stored, and analyzed using STATA version 15. Results: About 17% of the malaria RDTs stocked in the pharmacies were unregistered, 85.7% in hospitals were registered. Also, 83.3% of HIV RDTs in the Policlinics were registered. Registration status of the RDTs were associated with the districts in which the health facilities were located (p = 0.006). The RDTs were generally stored under good conditions (99.5%). Over forty percent (41.9%) of user practitioners interviewed rated the quality of the malaria RDTs as good and 59.2% rated HIV RDTs as very good. Conclusion: Though there were some unregistered RDTs whose quality cannot be ascertained, the quality of malaria and HIV RDTs in the facilities assessed were rated as good and likely to produce good results for malaria and HIV case detection.
Ho Chi Minh's Thought on Human Rights and Applying in Vietnam Today
Authors:   Thu Dau Mot University (TDMU), Binh Duong, Vietnam, Tram Assoc. Prof, Dr. Pham Ngoc
Published: May 2021

Ho Chi Minh is a great man whose life, career, ideology and actions are associated with a heroic historical period of the Vietnamese nation. He is not only loved and respected by the Vietnamese people but also admired and honoured by the world. Resolution of the United Nations Educational, Scientific and Cultural Organization on the 100th anniversary of the birth of President Ho Chi Minh: "The national hero of Vietnam and a great cultural man”. Ho Chi Minh's revolutionary career has left the Communist Party and people of Vietnam invaluable heritage of reasoning on particularly important issues, a including the profound philosophy of human rights, up to now, there remains theoretical and practical values.
ICT and Reflective Practice integration; A Constructivists Approach in Teacher Preparation at Primary Teachers Colleges in South Eastern Uganda
Authors: Gusango Emmanuel , Maani John , Ssetumba John
Published: May 2021

Purpose: The purpose of this study was to explore the ICT and reflective practice integration in teacher preparation at Primary Teachers Colleges and to establish whether these practices were among the constructivist approaches being used to teach students.

Methodology: This phenomenological study explored the lived experiences of tutors and students in light of constructivists’ teaching. It involved 3 PTCs and 15 participants who were purposively sampled. This study used a qualitative research design. Data was gathered using in-depth multiple interviews and analyzed following Moustakas (1994) procedure.

Findings: Data analysis and results revealed that tutor‘s continue to rely on traditional approaches in both instruction and supervision of school practice. The colleges are in a nascent stage in the integration of ICT and reflective practice in education being accustomed to traditional instructional practices and lack of motivation and knowledge among tutors to adopt ICT in teaching.

Unique Contribution to Theory, Practice and Policy: This research study adds to the body of knowledge suggesting ways in which constructivists’ teaching supports teaching effectiveness and promotes students’ learning amplifying the need for ICT and reflective practice integration in instruction. The study recommends establishing and setting up Reflective Practice Laboratories in Primary Teachers Colleges for tutors and students  induction on several constructivists’ practices that include systematic reflection, clinical supervision, use and integration of ICT and other interventions in a proper and professional  setting
التنبؤ بقيمة مقاومة الضغط عند أي عمر للخرسانة بواسطة الماتلاب
Authors: أبوصبيع د. أبو القاسم يحي , أونسة أ. د. الطيب حسن
Published: May 2021

نظراً للطفرة الكبيرة في تنفيذ المنشآت الخرسانية حيث تعتبر الخرسانة من العناصر المطلوبة للتنفيذ. وتعتبر ﻣﻘﺎوﻣﺔ الخرﺳﺎﻧﺔ من أهم المعايير لتقييم جودة الخرسانة، وهي أيضاً مرجع الموافقة أو الرفض لمقاومة الخرسانة ويرجع ذلك أساسا لسهولة القيام باختبار مقاومة الضغط ولوجود بيانات وعلاقات إحصائية كافية لتقدير المقاومة بمعرفة مكونات الخرسانة المؤثرة على خواصها كمحتوى الإسمنت ونسبة الماء إلى الإسمنت، وبما أن التطور الكبير الذي حدث في أنظمة البرامج الهندسية لما لها من دقة عالية والتصميم باستخدام الحاسب الآلي ومن هذه الأنظمة تم استخدام برنامج ماتلاب وهو من البرامج الجيدة والشائعة الاستخدام لتقدير مقاومة عند الزمن المطلوب.

يقدم البحث دراسة مختبرية من أجل معرفة مقاومة الضغط للخرسانة فقد تم عمل خلطة خرسانية وتحضير عينات من مكعبات خرسانية من الإسمنت‏ البورتلاندي العادي واختبارها في أزمنة 28 يوم و60 يوم و90 يوم و180 يوم و365 يوم وتعريضها للهواء والماء وماء البحر ومقارنة النتائج مع بعضها من حيث مقاومة الضغط للخرسانة. وعمل برنامج ماتلاب (MATLAB) بغرض تحليل نتائج الاختبارات واستقراء النتائج المستقبلية واستنباط معادلات تربط مقاومة الضغط وعمر الخرسانة عند أي زمن.

وكانت نتائج هذا البحث تم استنباط معادلات مقاومة الخرسانة من البرنامج ما تلاب في أعمار متقدمة لعمر 365 يوم ومقارنتها مع نتائج المختبرية لنفس الزمن وكانت النتائج ممتازة.
THE ROLE OF METAL (HYDR) OXIDES IN CATALYZING THE HYDROLYSIS OF QUINALPHOS
Authors: Esbata Abdelhamid A. , Buncel Erwin , VanLoon Gary W.
Published: May 2021

Catalysis of the hydrolysis of the organ phosphorus compound, quinalphos (Q) by (hydr) oxides was studied at pH 4.0, 7.0, and 10.0, and at 25oC. FeOOH and Al(OH)3 were the used solids for this research. Catalysis of quinalphos was followed by determining the disappearance of Q and the appearance of 2-hydroxyquinoxaline (HQ) product in the absence and presence of (hydr) oxides using HPLC with UV detector. Under these conditions, both hydroxides (FeOOH and Al(OH)3) have catalyzed the hydrolysis of quinalphos. In this study, FeOOH was found to be the best catalyst at the used pHs. It is apparent that at pH 10.0, Kobs for disappearance of Q is almost equal to that for the appearance of HQ, which indicates that hydrolysis of Q at pH 10.0 follows SN2 (P) pathway. On the other hand, at pH 4.0 and 7.0, hydrolysis of Q may have followed two pathways, SN2 (P) and SN2 (C), as Kobs for producing HQ is smaller than that for loss of Q.
الخواص الطبيعية والميكانيكية لصخور التراڤرتين بمنطقة مزدة
Authors: مادي د. عبد السلام محمد , السيد م. أروى حسين , طاهر م. أحلام أبوبكر
Published: May 2021

هذه الدراسة أجريت على صخور التراڤرتين Travertine في منطقة مزدة تبين أنه صخر رسوبي كثيفٍ متماسكٍ من أشكال الحجر الجيري، ويوجد في معظم الأحيان على شكل طبقات ينضمُّ بعضها إلى بعض. ويكون معظم التراڤرتين ذا لون أبيض أو أبيض مائل للصفرة بسبب وجود الشوائب، ويتكون بصورة رئيسية من كربونات الكالسيوم، ويتشكَّل حينما تنفصل كربونات الكالسيوم عن الماء من خلال التبخر وتختلف من طبقة إلى طبقة في المسامية التي كانت في طبقة A حوالي (%16.5) والطبقة B حوالي (%25.9) والطبقة C حوالي (%14.3)، وأيضا كانت متوسط مقاومة الصخر حوالي (KN/m228.3) بحسب بنية الترسيب، وعلى حسب الخواص الهندسية لصخر التراڤرتين يمكن استخدمه في تزيين الأبنية والبلاط الأرضي وذلك لسهولة قطعه.
DESIGNING A REFLECTION-TYPE NGD NETWORK USING OPEN AND SHORT SHUNT STUBS FOR WIDEBAND ELECTRICALLY SMALL ANTENNAS
Authors: Almahroug Alhasan Ali , Amer Basem Mustafa , Fheleboom Zuher H.M , Rehan Salahedin , Omer Abdusamea I.A
Published: May 2021

Wireless communication devices such as mobile phones play a vital role in our daily life. They need to cover an increasingly wide frequency band with low profile antennas. Electrically small antennas (ESAs) comply with these requirements. However, they are subject to gain-bandwidth limits when matched with passive matching networks. Non-Foster reactive elements have been proposed to bypass those restrictions. This paper addresses designing negative group delay NGD-based non-Foster networks to overcome stability problems when using Negative Impedance Converters (NICs) in order to realise on-Foster reactive circuits. The NGD network model was designed using open short stubs to achieve a non-Foster behaviour, and to act as a negative capacitor in the frequency range of interest. This technique of compensating the inherent loss of the proposed NGD network in the reflection mode was  to realise a new structure of reactive non-Foster elements. It involves a negative resistance amplifier and a Lange coupler. The proposed technique is applicable to antenna matching where both transmit and received capabilities are required. It was simulated and the experimental results of the new NGD network circuit were introduced.
Karaman’daki Geleneksel Mesleklerin Söz Varlığından Derleme Sözlüğü’ne Katkılar
Authors: DEMİR Erdal
Published: May 2021

Ağız araştırmalarının temelini derleme çalışmaları oluşturmaktadır. Yapılan çalışmalarda elde edilen malzemeler hem ağızların dil özelliklerini hem de söz varlığı unsurlarını ağız ve yazı dili sözlüklerine kazandırılmasını sağlamaktadır. Bu alanda yapılan en önemli çalışma Türk Dil Kurumu tarafından hazırlanmış olan Türkiye’de Halk Ağızlarından Derleme Sözlüğü’dür. Bu sözlük araştırmacılara halk ağızlarından derlenen kelimelerin yanı sıra dil malzemesi de sunmaktadır. Derleme Sözlüğü, önemli bir çalışma olmakla beraber söz varlığı açısından birtakım eksikleri de mevcuttur. Alanda yapılacak çalışmalar Derleme Sözlüğü’ne ilave edildikçe sözlük zenginlik kazanacak ve bunun yanında ağız özelliklerini yansıtan söz varlığı unsurları da korunmuş olacaktır. Bu çalışmada Karaman il merkezinde faaliyetlerini sürdüren geleneksel mesleklerin söz varlığından derlenen sözcük ve deyimlerden Derleme Sözlüğü’ne katkı sağlayacak olanlar verilmiştir. Yapılan tarama sonunda derleme esnasında tespit edilen 29 sözcük (bekeli, höfsünmek, şefte, tüteklik gibi.) ve 12 deyimin (aklı fırtmak, aklına dammak, cumasına gitmek gibi.) Derleme Sözlüğü’ne alınabilecek durumda olduğu belirlenmiştir. Bazı sözcükler (bekeli ve tüteklik, gibi.) sadece Derleme Sözlüğü için değil, diğer genel sözlükler ve alan sözlükleri için de sözlük maddesi olabilecek niteliktedir. Bu sözcüklere Karahanlı, Harezm ve Eski Anadolu Türkçesine ait eserlerde ve bu döneme ait sözlüklerde işletilmiş olduğu görülmektedir. Çalışmanın hem Türkiye Türkçesi ağız araştırmalarına hem de Karaman yöresi için yürütülecek olan ağız araştırmalarına katkı sağlayacağı düşünülmektedir.
Bozkır’da Günümüze Ulaşamayan İki Kamu Yapısı: Hükümet Konağı ve Redif Deposu
Authors: TEKİN Ali
Published: May 2021

Konya’nın otuz bir ilçesinden biri olan Bozkır, merkeze 116 km uzaklıkta yer almaktadır. Selçuklular ve Karamanoğulları dönemlerinde Türk yerleşimine sahne olan Bozkır, Osmanlılar döneminde de bölgede çıkarılan madenden dolayı önemini korumuştur. XIX. yüzyılda değişen ve yeniden biçimlenen merkezi yönetim, özellikle Tanzimat reformlarıyla birlikte kent organizasyonuna birçok yeni mimari ögeler kazandırmıştır. Bu yapılardan en önemlileri hükümet konakları ve askerî yapılardır. Bu çalışmada, XIX. yüzyılda Bozkır kazasında inşa edilmiş ancak, günümüze ulaşamamış hükümet konağı ve redif deposu binaları ele alınmıştır. Bozkır’ın eski fotoğraflarından ve arşiv belgelerinden yararlanılarak hazırlanmış bu çalışmada, Anadolu örnekleriyle de karşılaştırma yapılarak dönem içerisindeki yerleri vurgulanmıştır. Bozkır Hükümet Konağı zemin + bir katlı, ön cephesi öne çekilerek vurgulanmış ve ana girişin yerleştirildiği cephe meydana bakacak şekilde düzenlenmiştir. Plan olarak ise haçvari planın (dört yöne çıkma yapan) uygulandığı nadir bir örnektir. XIX. yüzyılın başlarında gelişen Neo-klasik üslupta inşa edilen askerî yapıların en tipik özelliği, Antik döneme atıfta bulunan sütun başlıklarına dayanan üçgen alınlıklar, kat arası silmeler ve yuvarlak kemerlere sahip olmasıdır. Bozkır Redif Deposu da II. Abdülhamid döneminde yaptırılmış, muhtemelen dikdörtgen planlı, bodrum + iki katlı ve kesme taştan kâgir olarak inşa edilmiş, iki sütun tarafından taşınan üstü balkonlu arkat şeklinde taşıntı yapan giriş bölümüne ve yarım daire alınlığa sahip oluşuyla, dönemin diğer askerî yapılarıyla benzer özelliklere sahiptir.
Философия человека в наследии Аль-Фараби
Authors:   КазНПУ имени Абая, Институт истории и права  http://orcid.org/0000-0002-4506-4468, Рамаданова Ж. Д.
Published: May 2021

В данной статье автор освящает отдельные аспекты философии человека в учении Абу-Наср аль-Фараби. Философская система аль-Фараби является целостным учением о великой миссии человека в мире. В его философии человек, наделенный Создателем самостоятельной волей и выбором, является центром мировоззренческой конструкции и преобразователем мироздания, в основу которого Творцом Вселенной заложена удивительная гармония. По мнению автора, несмотря на сложность освоения обширного наследия великого аль-Фараби, мы можем в повседневной жизни на практике применять отдельные аспекты его учения, чтобы «познать самого себя» и границы своих возможностей. В качестве таких руководств к использованию в повседневной жизни человека могут применяться его учение об «искусном приеме, с помощью которого мы можем обрести хороший нрав», о «мере» или «золотой середине», а также учение, которое дает ощутимые результаты, – учение о «знании и действии». По аль-Фараби, для достижения своего высшего предназначения – счастья – человеку необходимо не только получать знания, но и самосовершенствоваться в соответствии с полученными знаниями и трудиться, реализовывая свои знания и потенциальные способности в действительности.
PHILOSOPHY OF LATE RENAISSANCE IN ENGLAND: HUMAN MORALITY
Authors:   Professor of the “Gumanitarian disciplines” Chair of the Tashkent state Dental Institute (Bukhara branch) of Ministry of Healthcare, Republic of Uzbekistan, Doctor of Philosophy,, Shadmanov K. B.
Published: May 2021

The author's purpose of the research is to visually show the timeline of philosophical development of ethical and moral laws, principles and concepts that have been identified and developed in different countries, among different peoples through the millenia history of mankind. As a particular subject of research English Late Renaissance philosophy appears. English philosophical traditions is presented with ones of the most oustanding studies of human and his nature. The study reflects the specificity and national originality of the process of the formation of ethics in England during the late Renaissance.
ІЗГІЛІК ФИЛОСОФИЯЛЫҚ ҰҒЫМ РЕТІНДЕ
Authors:   Email: laura_abdygaliev@mail.ru, Абдигалиева Л. И. ,   Сейфуллин атындағы ҚазАТУ (Нұр-Сұлтан, Қазақстан)
Published: May 2021

Автор мақалада Адамзаттың дүниеде болуы оның рухани құндылықтарымен анықталатындығын ХХІ ғасыр үшін жер тағдырын шешер негізгі мәселелердің бірі екендігіне назар аударады. Адамзат болашағын бағыттауға қажетті рухани күш, ізгі ілім, нақыл сөз, өшпес үлгідегі ақыл-кеңестердің көне мұралардан табылып, танылуы – ұлттық мәдениетіміз, тіліміз бен діліміздің және дініміздің бүгініне, ертеңіне де негіз әрі тірек болар ұлылардың ұрпақпен сабақтастығының заңды құбылысы екендігінің дәлелі ретінде қарастырылады. Көне түркі құндылықтарынан бастау алып, қазақ дүниетанымы мен мұсылман ілімі дискурсынан өрбіген ізгілік (гуманизм) ілімін мақалада қазіргі философиялық танымдық дамудың неғұрлым қажетті әрі маңызды бөлігі деп қарастыруымыз да сондықтан. Қазақ дүниетанымы тарихындағы сабақтастық өзегі, ол – ізгілік (гуманизм) мәселесі, сондықтан ұлттық философия тарихын тереңірек әрі кеңірек тануға көмектеседі.
Aprender Metodología de la Investigación: los estudiantes de Sociología ante una materia extraña
Authors: Seid Gonzalo , Cuello Conrado José
Published: May 2021

En este artículo se analizan resultados de investigación sobre las experiencias y puntos de vista de estudiantes de la Carrera de Sociología de la Universidad de Buenos Aires sobre las materias de Metodología de la Investigación. A partir de varias decenas de testimonios orales y escritos se identifican los aprendizajes significativos que los estudiantes manifiestan haber experimentado, las características peculiares que según ellos hacen de la materia algo distinto de las demás, y las principales críticas y dificultades que ven en la materia. Por último, se propone una forma de clasificar las experiencias narradas como una clave interpretativa para sintetizarlas.
Política educativa para jóvenes en México: el derecho a la educación en condiciones de precarización
Authors: Hernández Flores Gloria Elvira
Published: May 2021

El artículo tiene como objetivo analizar la política educativa para jóvenes a través del programa “Yo no abandono” y una propuesta de directrices, recomendaciones para la política pública a fin de evitar el abandono en la educación media superior. Pone énfasis en la participación juvenil en estas acciones de política. Para su análisis toma como referente la condición de precarización que da marco al derecho juvenil a la educación, así como aportes derivados de dos proyectos de investigación desarrollados en el marco de un Cuerpo Académico ente 2012 y 2020. Estas investigaciones se guiaron por la pregunta cuáles son y cómo se dan las condiciones sociales que contextualizan el ejercicio del derecho juvenil a la educación. Su perspectiva teórico metodológica fue comprensivo interpretativa con herramientas dialógicas para el encuentro con jóvenes de escuelas públicas de educación media superior en el Estado de México. Sostiene que las políticas educativas requieren una mirada amplia, justa e integral de la juventud e inscribirse en proyectos democráticos de nación para la cual la juventud es de singular relevancia; en este sentido aporta elementos para su consideración en las políticas educativas con jóvenes.
Prácticas de literacidad con niños de contextos urbanos vulnerables: lo cognitivo y lo sociocultural
Authors: Centeno Partida María de Lourdes , Valdés Dávila María Guadalupe , Gómez López Luis Felipe
Published: May 2021

La investigación que aquí se reporta responde a la necesidad de recuperar y sistematizar las prácticas de literacidad que se llevan a cabo en Centro Polanco, escenario que brinda apoyo psicoeducativo a niños y jóvenes de contextos urbanos vulnerables . La investigación es un estudio de caso basado en el método cualitativo. Se llevó a cabo con un grupo de niños entre 6 y 8 años con problemas en la adquisición de la lectoescritura inicial, que asistieron al centro dos veces por semana para recibir apoyo en esta área. Los resultados muestran que el desarrollo de habilidades de procesamiento fonológico, análisis gráfico, actos de lectura y escritura constituyen operaciones que, en conjunto con una serie de materiales físicos y ayudas otorgadas por las facilitadoras, actúan como artefactos culturales ya que median y posibilitan el aprendizaje de los elementos clave para la lectoescritura inicial.
La escuela un lugar de lugares: testimonios de niñas, niños y adolescentes en zonas de conflicto en Colombia
Authors: Páez Triviño Yuri Constanza
Published: May 2021

En este artículo se reflexiona sobre la manera en que niñas, niños y adolescentes [NNA] describen la escuela y las emociones que los espacios escolares les producen. Se eligió uno de los ejes de análisis de una investigación más amplia, realizada mediante una etnografía en dos escuelas rurales en tiempos del postacuerdo en Guaviare, Colombia, desarrollada entre 2018-2020. Se recopilaron entrevistas, escenas etnográficas, narrativas orales, dibujos, fotografías y textos escritos de los estudiantes usando una sensibilidad etnográfica. En el análisis de estos registros se propone un acercamiento a los lugares de lo escolar y la vida cotidiana de estos actores. Asimismo, se presentan reflexiones centradas en mostrar los lugares de la escuela y las escuelas en sí mismas, entendidas en términos de Massey (2009), como un producto de relaciones en una complejidad de redes, intercambios y conexiones. El conflicto armado, la pobreza, el desamparo del Estado y la falta de infraestructura atraviesan la relación con el espacio que tienen los y las estudiantes con sus instituciones escolares.
RECENT TRENDS IN CURRICULUM AND TEACHING METHODS IN SCIENCE EDUCATION
Authors: Hamdan Amani
Published: May 2021

This study aimed to explore modern trends in the field of curriculum research and science teaching methods. To achieve this aim, the research reviews the literature that is closely related to these trends, with a focus on contemporary Arab and foreign studies during the last ten years. Six main axes are identified that comprehensively represent contemporary global trends in curriculum research and science teaching methods: reform movements in teaching and learning science, modern scientific fields and their various branches, methods and strategies for teaching science, science education technology, evaluation of teaching science, and science teacher preparation. This study provides a complete breakdown of the main thrust of the research trends in each axis, while citing solid studies that reflect these trends. This study also provides a set of practical recommendations for developing curricular research and methods of teaching science, especially in terms of research plans and their specific directions in the Saudi context. Keywords: science education, science curriculum, trends in science, teaching science.
PRIMARY SCHOOL STUDENTS’ NATURAL SCIENCE LITERACY EXPRESSION ANALYSING THE TOPIC “ORGANISM NUTRITIONAL RELATIONSHIPS AND ADAPTATION TO THE ENVIRONMENT”
Authors: Makarskaitė-Petkevičienė Rita
Published: May 2021

Both in Lithuania and abroad, a lot of natural science contests, quiz shows are organised for primary school students. By these events it is sought to motivate the participants, to provide knowledge, to deepen it and expand, to develop research work abilities and skills.
Research aim – to analyse and generalise the contest “Lithuanian naturalist” theoretical part task answers, to ascertain what concepts (domestic or scientific) dominate in the contest participant works, to find typical mistakes made by students, and to present recommendations to the teachers.
Research sample. Twenty-eight 3rd – 4th form students from 14 different Lithuanian schools, that is, 14 teams (the team consists of two students).
Activity sheets were used for the research, in which 10 tasks were presented. An evaluation instruction was prepared for result evaluation. Slides were shown for the students while presenting the tasks. Team members worked in pairs.
It was established that the 3rd and the 4th form students were able to make nutrition chains, could explain what it starts with, to ground, why. Contest participants correctly defined what a predator was, and what a victim was. Students had a sufficient understanding why predators were necessary in nature.
Students lacked the ability to read the task to the end, attentiveness helping to discern the features. A typical mistake was noticed: part of the students the concepts of an insect and a beetle used as synonyms. Domestic concepts happened to be used.
The participation in such contests, and the ability of organisers to lead the students through the science cognition way not only motivates them, but also allows them to believe in such activity meaningfulness. It is experienced how much I know, and together it is felt that still there is where to develop.
Having introduced the teachers with the contest tasks, and having discussed with them students’ made typical mistakes, use of concepts, having presented methodological advice how to analyse one or another topic, what methods to use, one can hope for more thorough primary school students’ dialogue with science.
Keywords: natural science knowledge and understanding, natural science contest, abilities, primary school students, activity sheet tasks.
COVID-19 World Vaccination Progress Using Machine Learning Classification Algorithms
Authors: M. Abdulkareem Nasiba , Mohsin Abdulazeez Adnan , Qader Zeebaree Diyar , A. Hasan Dathar
Published: May 2021

In December 2019, SARS-CoV-2 caused coronavirus disease (COVID-19) distributed to all countries, infecting thousands of people and causing deaths. COVID-19 induces mild sickness in most cases, although it may render some people very ill. Therefore, vaccines are in various phases of clinical progress, and some of them being approved for national use. The current state reveals that there is a critical need for a quick and timely solution to the Covid-19 vaccine development. Non-clinical methods such as data mining and machine learning techniques may help do this. This study will focus on the COVID-19 World Vaccination Progress using Machine learning classification Algorithms. The findings of the paper show which algorithm is better for a given dataset. Weka is used to run tests on real-world data, and four output classification algorithms (Decision Tree, K-nearest neighbors, Random Tree, and Naive Bayes) are used to analyze and draw conclusions. The comparison is based on accuracy and performance period, and it was discovered that the Decision Tree outperforms other algorithms in terms of time and accuracy.
Efeitos da interação solo-estrutura em estruturas de alvenaria estrutural
Authors: Borges Farias Caroline , Neves de Carvalho Guilherme , Aurélio Souza Bessa Marco
Published: May 2021

A alvenaria estrutural é um sistema construtivo que está em crescimento atualmente, por ser um sistema racionalizado aliando qualidade, rapidez e economia. Dessa forma, os estudos voltados para essa área são muito importantes para auxiliar o desenvolvimento dessa técnica. Entretanto, as análises, em sua maioria, são realizadas considerando as estruturas com apoios indeslocáveis, o que não é tão real, pois não considera o efeito do maciço de solo. Portanto, é importante efetuar a análise utilizando o conceito da interação solo-estrutura, que permite uma melhor relação entre a estrutura e o solo. O trabalho acadêmico visa estudar os efeitos de diversas combinações atuantes em um edifício, com fundação em radier flexível estaqueado, considerando apoio rígido e elástico. O estudo foi executado para variados modelos, com número crescente de 4 a 12 pavimentos, a fim de verificar a evolução das tensões nas paredes e dos momentos no radier e na laje do 4° pavimento. Projetou-se, primeiramente, o pavimento tipo da edificação utilizando o software AutoCAD®, em seguida, foi importado para o SAP2000®, no qual finalizou-se a modelagem e os resultados foram gerados. Estes estão apresentados na forma de tabelas, gráficos e imagens, a fim de melhor caracterizar o estudo e facilitar a vizualização dos dados e objetivos. Isso demonstrou que não houve mudança significativa entre os valores apresentados para os diferentes tipos de vínculos (rígido e elástico), bem como as ações do vento não influíram nas tensões de forma significativa. Além disso, percebeu-se mudanças abruptas nas tensões à medida que o número de pavimentos e a quantidade de estacas aumentavam. Em adição, nota-se que a estrutura concebida possui alta rigidez, o que evita grandes influências do vento independente do tipo de apoio. Diante disso, pode-se concluir que o aumento da rigidez do radier está diretamente ligado ao número de estacas e o seu posicionamento, o que influi nos resultados.
Influência de substituição do cimento por pentóxido de nióbio hidratado e cca na resistência a compressão de argamassas
Authors: Pires Martins Matheus , José de Souza Serafim Maria
Published: May 2021

A incorporação de Materiais Cimentícios Suplementares (MCS) nos cimentos contribui de várias maneiras para melhorias na resistência, na impermeabilidade, na durabilidade do material e de concretos com elevado desempenho de forma geral. Por outro lado, observa-se a necessidade de estudos direcionados à geração de aplicações tecnológicas a novos materiais, como os compostos de nióbio, frente à grande disponibilidade destes no Brasil. É evidente que o desenvolvimento de tecnologias que utilize esse elemento e seus compostos é crucial para um melhor aproveitamento e valorização dessa reserva que o país possui. Neste contexto, o presente trabalho buscou investigar a influência da adição de 1% do óxido de nióbio(V) hidratado juntamente com teores de 1, 3 e 5% de CCA, e os mesmos teores de CCA pura, em argamassas preparadas com cimento Portland, os efeitos causados pela associação desses materiais nas misturas cimentícias e sua relação com as propriedades de resistência mecânica, em variadas idades. Prepararam-se as argamassas e, finalmente, avaliou-se o desenvolvimento da resistência à compressão da cada argamassa até os 28 dias, de acordo com a NBR 7215. Observou-se pelos ensaios concluídos de resistência à compressão com substituições do óxido hidratado e da cinza da casca do arroz, que os maiores resultados em relação à referência, ocorreram com 3% de CCA e 1% de óxido de nióbio(V) hidratado de substituição aos 14 dias e 1% de CCA aos 14 dias.
A transição do graffiti de movimento social e intervenção urbana para arte comercializada
Authors: Da Silva Bastos Raquel , Tadeu Guimarães Sávio
Published: May 2021

Resumo
Arquitetura e efêmero: a festa como heterotopia na cidade de Brasília.
Authors: Dormundo Nerys Larissa , Tadeu Guimarães Sávio
Published: May 2021

A pesquisa apresenta um estudo analítico-crítico das relações estabelecidas com o espaço urbano a partir da realização de festas e eventos no plano piloto, tendo como eixo norteador o conceito de heterotopia definido por Michael Foucault. O trabalho tem como objetivo investigar formas contemporâneas de se apropriar do espaço urbano do plano piloto levando em consideração que as escalas determinadas no projeto original eram favoráveis ao uso coletivo, entretanto muitos dos vazios urbanos instalados com em diversos setores vieram a se tornar ociosos. A pesquisa visou traçar uma reflexão alternativa à noção de funcionalidade dos espaços, contabilizando e observando fatores relacionados à eventos festivos através de mapeamentos que levantaram informações acerca de data, horário, turnos recorrentes, quem os produz, localização geográfica, espacialidade (se abertos ou fechados), acessibilidade e faixa etária. Inicialmente foi buscado na literatura embasamento que identificasse aspectos relevantes das festas e eventos para as culturas e para os espaços urbanos, em seguida foi dado início às pesquisas de campo onde foram feitas observações a respeito do espaço e realizados os registros fotográficos. Simultaneamente aconteciam o mapeamento virtual onde foram colhidas informações essenciais à análise quantitativa para preenchimento de tabela que ao final veio a se transformar no apêndice do trabalho. Durante o período de coleta de dados surgiu a necessidade de adaptar a pesquisa as condições externas que vieram a modificar todas as relações estabelecidas nos centros urbanos por questões sanitárias, logo modificaram-se as dinâmicas de eventos, e novasquestões a respeito do segmento vieram a aparecer. Estabelecidos dois recortes, o (pré pandemia e o de isolamento social) observou-se através dos dados gráficos levantados a ampla distribuição dos eventos no plano piloto, dando destaque à concentração de eventos no eixo central da cidade, em especial em áreas amplamente subutilizadas. Foi possível, também, constatar a flexibilidade e relevância do segmento ao se reinventar diante de medidas sociais restritivas, apesar de se sustentar englobando um grande número de pessoas.