bluuebunny/crossref_metadata_2025 huggingface dataset:
Variations in abundance of Imbrasia epimethea (Lepidoptera: Saturniidea) on Petersianthus macrocarpus in different forest types in Central Cameroon
Authors:   Laboratory of Botany-Ecology, Faculty of Science, Yaoundé I University, 812-Yaoundé-Cameroon, Ambombo Onguene E. M. , Kono L. D. ,   Laboratory of Botany-Ecology, Faculty of Science, Yaoundé I University, 812-Yaoundé-Cameroon, Ngola J. B. ,   Environmental and Social Department, Nachtigal Hydro Power Company, 35 543-Yaoundé-Cameroon, Messi Effa J. A. ,   Laboratory of Botany-Ecology, Faculty of Science, Yaoundé I University, 812-Yaoundé-Cameroon, Menyene Etoundi L. F. ,   Laboratory of Botany-Ecology, Faculty of Science, Yaoundé I University, 812-Yaoundé-Cameroon,   Coordination of Forests, Soil and Environment, Institute of Agricultural Research for Development (IRAD), Ministry of Scientific Research and Innovation (MINRESI), 2123-Yaoundé Messa-Cameroon, Mbarga Bindzi M. A. ,   Laboratory of Botany-Ecology, Faculty of Science, Yaoundé I University, 812-Yaoundé-Cameroon, Youmbi E. ,   Laboratory of Plant Biotechnology and Environment, Faculty of Science, Yaoundé I University, 812-Yaoundé-Cameroon
Published: August 2023

Edible caterpillars are of vital importance to rural communities in developing countries providing high protein values and income. However, their ecology particularly seasonal fluctuations in their numbers is still poorly understood. With the ongoing climate change and increasing deforestation, their survival is a crucial issue. The aim of this study was to assess the structural characteristics of Petersianthus macrocarpus (Lecythidaceae) on the abundance of edible caterpillars of Imbrasia epimethea (Saturniidea). The forest area on the outskirts of Yaoundé is an important production basin for edible caterpillars making a perfect medium to answer questions on the variations in the abundance of caterpillars of I. epimethea in relation to the forest type of P. macrocarpus. Concerning biometric parameters, the [20-30[ cm diameter class in agroforest had more edible caterpillars (31.1 %). In the secondary forest and swamp forest, it was the [50-60[ cm diameter class with respectively 34 % and 27.4 %. In terms of height, the [30-40[ m height class contained more edible caterpillars (68.50 %), whereas the [60-70[ m height class represented the stratum with the least edible caterpillars (5.10 %). In different forest types, the abundance of caterpillars of I. epimethea according to the social status of P. macrocarpus individuals showed that caterpillars are found in abundance preferentially on dominant individuals (52.7 % in swamp forest, 49.7 % in secondary forest and 45.6 % in agroforest). The mean abundance of I. epimethea caterpillars was higher in secondary forest (563 ± 62 caterpillars) compared to agroforest and swamp forest. In contrast, swamp forest had the lowest mean abundance of edible caterpillars (375 ± 24 caterpillars) according to the social status of P. macrocarpus. These results point way to a better understanding of the use and management of an economically important NTFP.
Efforts to Improve High School Students' Table Tennis Skills Using Interval Training Methods
Authors: Sarjono Sarjono , Setiawan Budi
Published: August 2023

The goal of this classroom action study was to help students in class XI IPA 4 semester 2 at SMA Negeri 3 Sukoharjo in the 2021/2022 academic year enhance their table tennis playing skills through the use of interval training. Students in the second semester of class XI IPA 4 in the 2021/2022 academic year will serve as participants in this action research in the classroom. The source of the data came from observations of table tennis training activities through the interval training method. Observational approaches, test forms, questionnaires, and point documentation were employed for data gathering. Data analysis techniques used cycle points consisting of two cycles with steps including planning, evaluation and reflection. The results showed that the interval training method in the game of table tennis carried out by the researcher showed the results of cycle 1: students' skills were in the moderate category 11 students, 14 students were lacking and 7 students were not very low. Cycle 2 results: showed student skills in the security guard category 13 students, category good 11 students and very good category 8 students. This is evident from the results of research conducted in two cycles, namely the results of hitting students right on target that have been determined to have increased from the test results cycle I with the results of the test cycle II.
Diseño de una cámara de incineración de un horno para tratamiento de desperdicios avícolas
Authors: Núñez Naranjo Luis Paúl , Ortíz Caaspa Cristhian José , Catota Simbaña Franklin Estalin , Quiroz Astudillo Isaac Eduardo
Published: August 2023

Uno de los principales problemas presentados en la industria avícola es la muerte de las aves y la dificultad para desechar los cuerpos por tal razón la presente investigación consiste en diseñar con la ayuda de un Software CAD una cámara de incineración para un horno incinerador de desperdicios en granjas avícolas, con la finalidad de contribuir con la disposición de las aves que mueren por cualquier motivo el proyecto tiene como objetivo reducir los desperdicios y diseñar la cámara de incineración determinando pérdidas de calor en 1.62 % ya que la temperatura promedio usada para la incineración es de 1131°C y la temperatura de la pared exterior del horno es de 18.3 °C. Con esta temperatura en el interior del horno se estable una reducción del volumen por medio de la extrapolación de los resultados de 5.68 litros una vez terminada la incineración de los restos.
SHARH JANRIDAGI ISPANCHA MEDIAMATNLARDA SARLAVHA (“El Mundo”, “El país”, “ABC” elektron nashrlari misolida)
Authors:   Samarqand davlat universiteti, M.R Artikova
Published: August 2023

Ushbu maqolada sharh janridagi ispancha mediamatnlarda sarlavha “El Mundo”, “El país”, “ABC” elektron nashrlari misolida o‘rganilgan. Maqolada mazkur nashrlarda chop etilgan sharh janridagi materiallar sarlavhasi turlari, ularni qo‘llashdan maqsad, erishiladigan natija va samaradorlik tahlil qilingan. Ispaniya nashrlarida kuzatiladigan aniqlik, dalillarga asoslanganlik tendensiyasi sarlavhalar misolida ochib berilgan. Ispaniya jurnalistikasida sarlavha tanlash mahorati bo‘yicha xulosalar va mazkur amaliyotni boshqa davlatlar jurnalistikasida ham qo‘llash bo‘yicha taklif berilgan.
Da impossibilidade de uma relação de self-ownership O dualismo ontológico na ilusão da auto-propriedade
Authors: Mileli Diego R.
Published: August 2023

O conceito de self-ownership é frequentemente utilizado nos campos da Ética e da Filosofia Política para justificar ou negar a justeza de determinadas situações, atos ou práticas. As críticas a tal conceito são predominantemente focadas em seus corolários. No presente artigo a análise se concentra sobra as condições de possibilidade da existência de uma relação de propriedade de si mesmo – auto-propriedade – procurando-se demonstrar a impossibilidade de tal relação pela ausência de multiplicidade de elementos que possam constituir um proprietário e uma propriedade. A propriedade de si mesmo é fundada em um dualismo ontológico, cuja ilusão procura se respaldar na percepção de si como um outro na constituição da identidade e na confusão da relação genitiva com uma relação de propriedade.
Expediente
Authors: Trágica Revista
Published: August 2023

Expediente Vol.11 n.2
Entre Bachelard e Canguilhem: da psicanálise do fogo à pedagogia da cura
Authors: Souto Caio
Published: August 2023

O artigo se inicia com uma breve análise de três textos tardios de Michel Foucault (1983-1984) que remetem a uma certa herança iluminista no pensamento epistemológico francês, para em seguida avançar algumas considerações a respeito dessa herança de uma perspectiva um pouco diversa da foucaultiana. Para isso, recorremos a um texto posterior de Canguilhem (1987) sobre a ideia de progresso, para em seguida fazermos um recuo à obra de Bachelard, antes de retornarmos novamente a Canguilhem. Neste recuo, abordamos a noção de “psicanálise do fogo’ em Bachelard, com suas reminiscências nietzschianas e freudianas, para ao cabo concluirmos com uma consideração a respeito da possibilidade de uma “pedagogia da cura”, tal como formulada por Canguilhem.
Do desejo à criatividade: a mudança na visão imanente de Richard Taylor sobre o sentido da vida
Authors: Moncavo Anamar
Published: August 2023

A concepção de Richard Taylor sobre o sentido da vida é primeiramente apresentada no texto The meaning of life (1970) por meio de uma discussão em torno da figura de Sísifo, retomando uma imagem já evocada por Camus e ressignificando a atividade de Sísifo, conferindo, mesmo a ele, a possibilidade de viver uma vida com sentido. Posteriormente, porém, em Time and life’s meaning (1987), Taylor sustenta uma visão de todo distinta, negando que as condições descritas no primeiro artigo sejam suficientes para que a vida de Sísifo seja significativa. O objetivo deste trabalho consistirá em apresentar e confrontar as perspectivas do que chamamos de “primeiro Taylor” e “segundo Taylor”, respectivamente, dialogando criticamente com as mesmas.
Computer Architecture And Organization
Authors:   Associate Professor, Department of Electronics and Communication Engineering, Jerusalem College of Engineering, Chennai, Tamil Nadu 600100, India., T. Tamilselvi , V Francis Sheeja ,   Professor and Head, Department of Electronics and Communication Engineering, Jerusalem College of Engineering, Chennai, Tamil Nadu 600100, India., Devi S. Lavanya ,   Assistant Professor, Department of Electronics and Communication Engineering, Jerusalem College of Engineering, Chennai, Tamil Nadu 600100, India., Saranya K. Raja ,   Assistant Professor, Department of Electronics and Communication Engineering, Jerusalem College of Engineering, Chennai, Tamil Nadu 600100, India.
Published: August 2023

Modern computer architecture and organization are covered extensively in Computer Architecture and Organization: Design Principles and Applications. The book, written by a working professional, dives deep into the intricate workings of commercial computers, starting with the most fundamental concepts. Topics discussed in the book include: Main Memory Design Memory Management Techniques Intrasystem Communication and I/O Computer Peripherals Pipelining and Vector Processing Advanced Computer Architecture Computer Arithmetic Computer Architecture and Instruction Set Main Memory Design Processor Design and Control Unit Several worked examples of difficulties with cutting-edge goods, together with numerous exercises, review questions, and case studies, further illustrate the principles and ideas presented. The book also delves into digital logic for those who have no background in the field. This book is intended for experts, but it may also serve as a text-cum-reference for students taking their first course in electrical and computer science/engineering. B.E. (Computer Science, Electrical Engineering, Electrical and Electronics Engineering, and Information Technology), M.C.A., M.S., M.S., B.S., and B.S. (Computers) students will also find this book to be an excellent resource.
Salutvorto de la redaktoro / A word from the editor
Authors: Kiselman Christer
Published: August 2023

Kara leganto, Estas ĝojo prezenti al vi la duan kajeron de Esperantologio! Gi enhavas tri originalajn studojn kaj kvar recenzojn. El la studoj po unu estas en esperanto, la angla kaj la franca; el la recenzoj du estas en esperanto, unu en la angla kaj unu en la germana. Pri la aperiga politiko de la revuo bonvolu legi en la Notico de la redaktoro en kajero 1.
Aperis ampleksa vortaro esperanta-germana: Recenzo de vortaro de Erich-Dieter Krause
Authors: Vilborg Ebbe
Published: August 2023

Aperis la granda vortaro esperanta-germana de Erich-Dieter Krause - verko longe atendata kaj arde dezirata, ĉar la samspeca antaŭulo, Butin & Sommer, Wörterbuch Esperanto-Deutsch, datumas de la 1950-aj jaroj. La kompilinto estas profesia lingvisto (profesoro pri la indonezia lingvo en la Universitato de Lepsiko) kaj leksikografo, jam konata en la esperantista mondo pro sia germana-esperanta vortaro de 1983. La aktuala verko estas tiel ampleksa (80 000 kapvortoj), ke oni, por trovi kompareblan objekton, devas sin turni al Plena Ilustrita Vortaro de Esperanto (PIV ) aŭ al la Enciklopedia Vortaro Esperanta-Germana de Wüster (1923–1929). Kiel laborkvanto plenumita de unu persono ĝi estas supermezura, klarigebla nur per diligenta kolektado kaj registrado dum pluraj jardekoj.
Mechanochemical synthesis of organohalogen compounds: a synthetic chemist's view
Authors: Borodkin G. I.
Published: August 2023

Data on the mechanochemical synthesis of halogen-containing organic compounds published mainly over the past 10 years are summarized and critically analyzed. The established views about the methods of activation of mechanochemical halogenation reactions are discussed. The mechanochemical fluorination, chlorination, bromination and iodination reactions of organic compounds are considered. Particular attention is paid to reaction mechanisms, selectivity problem and consideration of the mechanochemical approach as a promising trend of green chemistry. The review is devoted to applications of mechanochemistry in organic synthesis, while the fundamentals of mechanochemistry are beyond the scope of this publication. The bibliography includes 155 references.
Contribution of Hidden Curriculum on Students’ Discipline in Public Secondary Schools in Kigoma District
Authors:   St. Augustine University of Tanzania, Otieno Kennedy Omondi , Doto Daniel ,   Mwandiga Secondary School
Published: August 2023

This study investigated the contribution of Hidden Curriculum (HC)on students’ discipline in public secondary schools in Kigoma District, Tanzania. Objectives were to; determine the effectiveness of aspects of HC on students’ discipline in public secondary schools and examine the strategies to enhance the effectiveness of HC on students’ discipline in public secondary schools in Kigoma District. Hidden Curriculum Theory guided the study. Convergent mixed methods design was adopted. Interview guide and questionnaires were used to collect data from 65 students, 25 teachers & 5 school administrators. Stratified & simple random sampling techniques were employed to select students & teachers while school administrators were purposively sampled. Validity was established through expert judgment. The reliability index, SQ; r=0.83 & TQ; r=0.61 for questionnaire were obtained. Quantitative data were analyzed using descriptive statistics in the SPSS. Results were presented in tables of frequencies and percentages. Qualitative data were thematically analyzed alongside research questions and presented in narrative forms. Findings revealed aspects of HC such as teachers’ and parents’ dressing code, time management, self-drive, teamwork and public relations that influence students’ discipline. In conclusion, various strategies employed to enhance the effectiveness of HC on students’ discipline include encouraging students to imitate positive values from adults, guidance and counselling. The study recommends awareness among teachers that it is relatively easier for learners to pick up the manners and way of life of teachers and other actors in the school and internalise them better than even what is actually taught.
“Trajtimi kirurgjikal i defekteve kockore paradontale nëpërmjet aplikimit të teknikës “Single Flap Approach” dhe biomaterialeve
Authors:   Aldent University, Tirana, Shehu Erjon , Halimi, Estela , Deda Edlira , Shehu Ilir , Koçi Brunilda ,   Oral Surgeon, Klinika Denti Max Vlorë,   Aldent University, Tirana,   Aldent University, Tirana,   Oral Surgeon, Klinika Denti Max Vlorë
Published: August 2023

Prezantimi dhe aplikimi i modeleve të flapeve ad hoc për të aksesuar edhe defektet e thella intrakockore ka çuar në një përmirësim të konsiderueshëm të rezultateve rindërtuese pas përdorimit të rigjenerimit të drejtuar indor (GTR) ose derivateve të matricës së smaltit (EMD). Megjithëse efektet shtesë të dobishme të GTR dhe EMD tashme janë të njohura, në lidhje vetëm me kyretazhin e hapur, përmirësimet në teknikat kirurgjikale, veçanërisht futja e proceduravetë reja të ruajtjes së papilës, kanë rezultuar në një rritje progresive të fitimit të ngjitjes klinike të arritshme edhe vetëm nëpërmjet kyretazhit të hapur. Single Flap Approach (SFA) është një procedurë e thjeshtuar kirurgjikale e krijuar posaçërisht për trajtimin e defekteve kockore periodontale. Parimi kryesor i kësaj procedure konsiston në shkolitjen e një flapi të vetëm mukoperiostal (bukal ose oral), duke ruajtur integritetin e indeve të buta suprakrestale ndërproksimale. Artikulli përveç hulumtimeve teorike të studime të deritanishme për avatanzhet e kësaj teknike kirurgjikale sjell në analizë të detajuar rastin klinikë të trajtuar nga autorët, duke analizuar të gjithë procedurën hap pas hapi. Hulumtimet shkencore dhe aplikimi tyre ne rastet klinike kanë evidentuar se SFA lejon të minimizohet trauma e indeve të buta ndërproksimale duke sjellë recesion të reduktuar pas operacionit.
Studim retrospektiv lidhur me efikasitetin e diode lazerit ne trajtimin jo-kirurgjikal te paradontopative
Authors:   Aldent University, Tirana, Shehu Erjon , Caushi Spiro ,   Reald University College, Deda Edlira , Ilir Shehu Ilir , Halimi Estela
Published: August 2023

Disa studime kanë treguar se DL si një shtesë e SRP çoi në një përmirësim në disa parametra klinikë. Megjithatë, në lidhje me parametrat klinikë të inflamacionit gingival, disa studime nuk gjetën rezultate pozitive. Ndryshe nga SRP, rezultate kontradiktore janë gjetur në prova të shumta klinike që vlerësuan efikasitetin klinik të DL. Veçanërisht shumë studime që gjetën dallime të rëndësishme në mbështetjen e grupeve me lazer, kishte pyetje në lidhje me nëse rezultatet ishin klinikisht të rëndësishme, kështu që u arrit në përfundimin se DL nuk përmirësoi trajtimin konvencional, veçanërisht në lidhje me rezultatet shumë afatgjata. Qëllimi i këtij studimi është të vlerësojë efikasitetin e lazerit me diodë 800-980nm si një ndihmës i terapisë parodontale jokirurgjikale në trajtimin e paradontopative. Në pikëpamjen metodologjike ky studim u realizua si rishikim literature në saj të metodave të hulumtimit, analizës dhe sintezës. Fusha u ngushtua për të zgjedhur vetëm studimet klinike të kontrolluara të rastësishme (RCT) të kryera nga viti 2010 në 2020. Në total ishin 84 artikuj, tetë prej të cilëve u përfshinë në rishikim sepse plotësonin kriteret e përfshirjes. Janë krahasuar parametrat klinik, mikrobiologjik dhe imunologjik të studimeve. Në katër nga tetë studimet, përfitimet më të mëdha, për sa i përket parametrave klinikë, u morën në pacientët e trajtuar me lazer diodë lazer plus root planing e scaling (SRP) krahasuar me grupin e kontrollit. Rezultatet më të mira në favor të përdorimit të lazerit me diodë, për sa i përket parametrave imunologjikë, u konstatuan pas 30 ditësh.
PROBLEMATIKAT E ZHVILLIMIT EKONOMIK TË VENDEVE NË TRANZICION
Authors:   Reald University College, Nazaj Dafina
Published: August 2023

Zhvillimi ekonomik i vendeve në tranzicion ka kaluar nëpër faza të ndryshme duke u shoqëruar nga problematika sociale, ekonomike dhe mjedisore. Kalimi në ekonominë e tregut është shoqëruar me riorganizimin e sektorëve të ekonomisë në tërësi. Mundësitë e reja për të zhvilluar sipërmarrjen e lirë private, rritën ndjeshëm pjesëmarrjen e subjekteve dhe individëve të ndryshëm privatë në ekonomi, duke kontribuar në lindjen e sektorit privat. Edhe Shqipëria, si një nga vendet në tranzicion, pas viteve 1990, ka përjetuar disa situata specifike në lidhje me zhvillimin ekonomik të sektorëve të ndryshëm, shoqëruar nga efektet mbi shoqërinë dhe mjedisin. Analiza të thella dhe të gjithanshme ekonomike të periudhës së tranzicionit janë kryer në mënyrë periodike nga individë, studiues dhe institucione të ndryshme të lidhura me zhvillimet ekonomike, të cilat i kanë shërbyer njohjessë realiteteve, marrjes së masave dhe hartimit të politikave të nevojshme të zhvillimit ekonomik të vendit. Në këto kushte, zhvillimi i qëndrueshëm është parë nga shumë studiues si zgjidhja optimale për kapërcimin e problemeve, si në vendet e zhvilluara, ashtu edhe në vendet në zhvillim. Në kuadër të këtij zhvillimi, autorë të ndryshëm trajtojnë modelet e përshtatshme, që bazohen në përzgjedhjen e sektorëve të përshtatshëm për të arritur rritjen e qëndrueshme ekonomike përmes kujdesit për trekëndshin, ekonomi-shoqëri-mjedis. Efektet pozitive do të vijnë pas përballjes me disa sfida që lidhen, jo vetëm me mjedisin, por edhe me punësimin dhe problemet e menaxhimit efektiv të territorit.
ÇËSHTJE TË LEGJITIMETIT TË MONITORIMIT DHE KONTROLLIT PËR ZBATIMIN E LIGJIT TË KONSULTIMIT PUBLIK NË NJVV
Authors:   Reald University College, Zenelaj Engjellushe , Nurja Fatlum ,   Zyrtar i Lartë i Programit për Këshillat Vendor, Bashki të Forta
Published: August 2023

Decentralizimi i jep kompetenca, por edhe i shton përgjegjësitë pushtetit vendor. Transparenca, si një nga shtyllat e demokracisë në një shtet ligjor të së drejtës, ndër treguesit matës të saj ka edhe konsultimin publik. Transparenca si element i qeverisjes së mirë nuk matet me zbardhjen e vendimmarrjes, por me zbardhjen e procesit, që përshkon projekt-akti deri sa shkon në vendimmarrje. Njësitë e vetëqeverisjes vendore, duke i referuar ligjit organik për qeverisjen vendore në procesin e vendimmarrjes lidhen ngushtë me procesin e konsultimit publik. Qëllimi i artikullit është që të analizojë procesin e konsultimit publik në njësitë e vetëqeverisjes vendore, kontrollin e ushtruar nga organet kompetente dhe nëpërmjet kësaj identifikimin e ngërçeve ligjore apo mangësive procedurale. Artikulli është ndërtuar nga ndërthurja e disa metodave, si: ajo e hulumtimit, vëzhgimit, analizës sintezës dhe pjesërisht statistikore. Dispozitat normative të Republikës së Shqipërisë, në kuadrin e procedurës sëkonsultimit publik, kanë ardhur në përmirësim të vazhdueshëm. Artikulli kërkon të theksojë jo vetëm rëndësinë e konsultimit publik si element i demokracisë funksionale vendore, por edhe në kontekstin e rregullshmërisë administrative, të cilat, pavarësisht përmirësimeve ligjore, sërish evidenton shkelje abuzive për konsultimin publik nga ana e bashkive.
rens Sabahaddin’in Toplumsal Dönüşüm İdealinin Başarısızlığı
Authors: Tezel Ahmet
Published: August 2023

Liberal düşüncenin Osmanlı’daki öncüllerinden kabul edilen Prens Sabahaddin çöküş sürecindeki imparatorluğun varlığını sürdürebilmesi için bir toplumsal dönüşüm ideali ortaya koymaktadır. Prens’in düşüncesinin şekillenmesinde en çok etkilendiği isim Fransız sosyolog Edmond Demolins’dır. Demolins’ın “kamucu toplum” ve “bireyci toplum” kavramları üzerinden Prens Sabahaddin de Osmanlı’nın modernleşmesinin ancak “kamucu toplum”dan “bireyci toplum”a geçişi ile mümkün olacağını savunur. Bu makale Demolins’ın Prens’in üzerindeki etkisini de dikkate alarak toplumsal dönüşümü hedefleyen düşüncesinin üç sacayağını oluşturan eğitim, memuriyet ve adem-i merkeziyet kavramlarını analiz etmektedir. Prens’in düşüncesinin şekillenmesine neden olan tarihsel süreç ile Prens’in yazdığı eserler ve ona ilham veren Demolins’ın değerlendirmeleri incelenmiştir. Bu bağlamda Prens tarafından idealize edilen toplumsal dönüşümün Osmanlı’da gerçekleşememesini irdelenerek Prens’in önermelerinin hayata geçirilmesindeki açmazlar ortaya konulmaya çalışılmıştır.
Introducción
Authors: Cuevas Vallejo Carlos Armando
Published: August 2023

Los reportes de problemas en la enseñanza y aprendizaje del cálculo comparten mucho de la problemática de la enseñanza de la matemática en general y de las ciencias naturales. Problemas como:

Los cursos de matemáticas se encuentran desvinculados de las materas de especialidad que utilizan la matemática en escuelas de ingeniería y sociales.

Los cursos son ajenos a los intereses de los estudiantes y al entorno en donde viven.

Existe la bipolaridad de cursos meramente operativos, con empleo de fórmulas de forma memorística, descontextualizadas y carentes de significado. Y por la otra con un exceso de rigor y formalidad en donde los conceptos quedan ocultos.

Los profesores de matemáticas tienen muy poca comunicación con especialistas de otros cursos que componen la curricula escolar.

Existe poca disposición hacia el uso de softwares o tecnología digital de apoyo a los cursos.

Existe un alto grado de estudiantes que fallan en sus cursos lo cual conduce a un alto índice de reprobación y en consecuencia deserción.• La mayoría de los docentes carecen de una clara orientación didáctica que les permita estructurar sus cursos de acuerdo con la importancia de conceptos y necesidades.

Existe confusión al evaluar, dado que no se específica claramente el marco didáctico

Dado que se práctica una didáctica tradicional poco se hace para establecer una mejor conversión entre los registros de representación semiótica.
La modelación en las ciencias naturales: una estrategia didáctica en un curso de cálculo
Authors: Díaz Gómez José Luis
Published: August 2023

En este documento se describe una estrategia didáctica que se ha implementado con el propósito de propiciar la utilización de modelos matemáticos en situaciones prácticas del área de Químico Biológicas, como vía para contribuir al desarrollo de las habilidades de los estudiantes en la solución de problemas en la vida fuera del aula.
Introducción
Authors: Cuevas Vallejo Carlos Armando
Published: August 2023

Una revista científica existe gracias a la generosidad de nuestros distinguidos autores y la amable lectura de todos ustedes. Es una de las mejores maneras encontradas hasta hoy para difundir información científica sobre desarrollos y trabajos realizados en diversas latitudes de nuestro orbe. Acorde a los tiempos actuales hemos ampliado nuestra oferta para sus trabajos con artículos por invitación, artículos de investigación, aportaciones de docencia y reseñas.
Situaciones problemáticas en contexto en el aprendizaje del Cálculo
Authors: Benítez Mojica David , Londoño Millán Noelia
Published: August 2023

En el presente artículo se documentan las características del razonamiento de un grupo de estudiantes universitarios, cuando abordan un problema en contexto real. La actividad de aprendizaje planteada, conlleva a la modelación matemática de la evaporación de un líquido contenido en un recipiente. En este proceso, se motivó la creatividad de los alumnos, al crear un método de medición para el volumen evaporado, se utilizó la tecnología para estudiar las diferentes representaciones de las funciones candidatas a modelar el fenómeno
El calculo de raíces de polinomios. Una historia sin fin.
Authors: Madrid de la Vega Humberto
Published: August 2023

El c´alculo de las ra´?ces de un polinomio o soluci ´on de ecuaciones ha sido un factor generador importante en el desarrollo de las matem´aticas. Baste para ello mencionar que era la forma de entender el ´algebra en sus inicios. Adem´as, constituye una propiedad fundamental del objeto funci ´on y consecuentemente trascendental para el estudio del C´alculo Diferencial e Integral. A pesar de que existen vestigios de su b ´usqueda desde el tercer milenio a. C. y su b ´usqueda ha sido motor del desarrollo de las matem´aticas desde ese entonces hasta el d´?a de hoy, es un sentir com´un que este es un problema resuelto desde hace tiempo. Veremos que tal supuesto no es del todo cierto: el c´alculo num´erico de las ra´?ces y sus multiplicidades es problema vigente, apenas reci´en resuelto para polinomios de una variable, quedando cosas pendientes. Haremos una rese ˜na de esta apasionante historia de b ´usqueda.
La integral de funciones de una variable: Enseñanza actual
Authors: Alanís Rodríguez Juan Antonio , Soto Apolinar Efraín
Published: August 2023

El trabajo que aquí se presenta es el punto de partida de una investigación que forma parte de un proyecto que tiene como objetivo mejorar la enseñanza y el aprendizaje del Cálculo. Quienes participan en ese proyecto, al igual que otros matemáticos educativos, consideran que las causas de los nada halagadores resultados de la enseñanza tradicional de las matemáticas, no son sólo de carácter psico-pedagógico, sino también de carácter epistemológico. En tal sentido, se han dado a la tarea de elaborar una propuesta de qué enseñar en los cursos de Cálculo, y no sólo de cómo enseñar en esos cursos. Conscientes de la importancia de conocer la realidad que se desea transformar, las primeras investigaciones de ese proyecto han tenido como objetivo caracterizar la enseñanza del Cálculo. En este trabajo se reporta lo que se ha avanzado en cuanto a la caracterización de la enseñanza del Cálculo Integral.
Sistema experto como herramienta de apoyo en el aprendizaje de tópicos de Cálculo
Authors: Ruiz Ledesma Elena Fabiola , Hernández González Jossue Desiderio , Palma Orozco Rosaura
Published: August 2023

Los sistemas expertos son herramientas que pueden diagnosticar y apoyar el desarrollo del aprendizaje de los estudiantes, ayudando a mejorar sus debilidades una vez que han determinado su nivel cognoscitivo. El presente trabajo pretende desarrollar un sistema experto como herramienta de apoyo para la enseñanza de algunos temas de Cálculo, empleando redes bayesianas como motor de inferencia y registros de representación semiótica para la base del clasificador probabilístico. Se distinguen dos etapas: la primera consiste en diagnosticar ciertas debilidades en el estudiante; la segunda permite enfatizar la forma en la que se tratarán los aspectos relacionados con el aprendizaje y la manera en que serán presentados los tópicos del área a reforzar.
Effect of Corporate governance on Financial Distress among the Firms Listed at Nairobi Securities Exchange
Authors: Kamau Charles Guandaru , Oyoti Regnold , Muzungu Benjamin Kavure
Published: August 2023

This study delves into the intricate effect of corporate governance on financial distress in Kenya among the firms listed at the Nairobi Securities Exchange. The recent economic growth and development in Kenya have attracted increased attention to the effectiveness of corporate governance practices adopted by businesses. The study examines the effect of various corporate governance factors, such as Board Size, Board Independence, Audit Committee Independence, and Firm Size, on financial distress in listed companies on the Nairobi Securities Exchange. To evaluate the significance of each factor in influencing financial distress, the analysis employs a Type I Sum of Squares approach using XLSTAT software. The findings reveal that Board Size and Firm Size exhibit highly significant relationships with financial distress, indicating their crucial roles in influencing a company's financial stability. Furthermore, Board Independence demonstrates a statistically significant relationship with financial distress, underscoring the importance of independent directors in mitigating financial risks. Although Audit Committee Independence exhibits borderline significance, it provides indications of a potential relationship with financial distress. Overall, the study offers valuable insights into the factors affecting financial distress in Kenyan companies and emphasizes the significance of robust corporate governance practices in ensuring financial stability and resilience.
Distribution Pattern of Shorea lepropsula Miq, Around the Forest Area With Special Purpose (KHDTK) Aek Nauli Indonesia
Authors:   Forestry Study Program, Faculty of Forestry, Universitas Sumatera Utara, Jl. Durin Tunggal, Pancur Batu District, Campus II USU Medan, Indonesia 20155, Latifah S , Zahra M , Panggabean M D
Published: August 2023

Shorea leprosula belongs to the Dipterocarpaceae family and grows in Indonesia's tropical forests which have an economic and ecological role. They are a plant in tropical forests that is known as a producer of fruit and tengkawang oil. The presence of S. leprosula trees in the habitat naturally at this time was very hard to find and began to decrease in population. This study aims to determine the potential and distribution pattern of S. leprosula found around KHDTK Aek Nauli. The research method uses the plot path method measuring 20 m × 20 m, the total number of plots is 150 plots. The research results show that the potency of S. leprosula is 63.17 m3 ha-1. The highest important value index of S. leprosula at the tree level was 25.45%. The distribution pattern of S. leprosula at the sapling, pole, and tree levels was clustered, while the distribution pattern at the seedling level was random. The importance of information about the potential and pattern of S. leprosula to be known as an indicator of the current status of its population at KHDTK Aek Nauli and as an information basis for managing management S. leprosula for support preservation in the forest.
On properties of generalized Tridovan numbers
Authors:   Department of Mathematics, Art and Science Faculty, Zonguldak Bülent Ecevit University, Soykan Yüksel , Özmen Nejla ,   Department of Mathematics, Faculty of Art and Science, Duzce University, Okumuş Inci ,   Department of Engineering Sciences, Faculty of Engineering, Istanbul University-Cerrahpasa
Published: August 2023

In this paper, we examine generalized Tridovan sequences and treat in detail two cases called Tridovan sequences and Tridovan–Lucas sequences. We present Binet’s formulas, generating functions, Simson formulas, and the summation formulas for these sequences. In addition, we give some identities and matrices related to these sequences.
Uso de acondicionadores de suelo para reducir estrés hídrico post plantación de especies nativas del bosque esclerófilo en la Región Metropolitana, Chile
Authors:   ,   Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal, Talamilla Noriega Marcelo
Published: August 2023

En los sistemas forestales nativos de la zona mediterránea de Chile central, el estrés hídrico posterior al trasplante produce una alta mortalidad de las plántulas después del primer verano. Se han propuesto diversas técnicas de mejora de calidad de planta y acondicionamiento de suelo que permitirían reducir el estrés post trasplante. El objetivo de este trabajo es evaluar los efectos de dos contenedores de distinto tamaño y distintas técnicas de acondicionamiento a la casilla de plantación que influirían tanto en la capacidad de retención de agua de la casilla de plantación, como en el desempeño fisiológico y sobrevivencia. Se seleccionaron 4 especies arbóreas nativas: Schinus polygamus, Lithraea caustica, Kageneckia oblonga y Quillaja saponaria. Estas especies fueron viverizadas en dos contenedores: B (bolsa negra polietileno 0.4L), MA (Air-Pot ® (1L) y posteriormente establecidas en terreno en cuatro tratamientos de acondicionamiento de casillas de plantación. Los tratamientos fueron Suelo control (SC), Mezcla de suelo de origen con una pila de piedras puestas en columna de PVC enterrada como pozo seco (SR), Mezcla de guano bovino estabilizado (SMO), Hidrogel superabsorbente SolidRain® 2 L (SH). Al final de la primera temporada de crecimiento, L. caustica y Q. saponaria tuvieron una sobrevivencia significativamente mayor en el tratamiento SH, mientras que S. polygamus tuvo una sobrevivencia significativamente mayor en los tratamientos SH y SR en comparación al tratamiento control. La adición de hidrogel al suelo resulta ser una técnica adecuada para Q. saponaria, L. caustica y S. polygamus, lo mismo podría decirse del suelo con una pila de rocas en S. polygamus, ambas técnicas reducen el estrés hídrico postrasplante durante la fase de arraigo en el campo y contribuirían a mejorar los métodos de restauración forestal en sistemas áridos degradados.
Dietary supplements intake and diet quality
Authors:   ,   Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal, Urbina Tobar Paula
Published: August 2023

Los expertos en salud en apoyan la ingesta de alimentos saludables. A pesar de las recomendaciones, el consumo de estos alimentos es inferior al recomendado. Los suplementos vitamínicos se han posicionado como una alternativa para apoyar la ingesta de nutrientes. Sin embargo, no está claro si la ingesta de estos se asocia positivamente con diferentes grupos de alimentos. Este estudio investiga la relación entre la ingesta de vitaminas y la calidad de la dieta y los mecanismos subyacentes que pueden explicar esta relación. Usando datos de la Encuesta Nacional de Consumo de Alimentos de Chile, examinamos la asociación de la ingesta de vitaminas con la calidad dietética de diferentes alimentos y la calidad general de la dieta. Utilizamos regresiones de mínimos cuadrados en dos etapas (2SLS) con instrumentos de orden superior para abordar la posible endogeneidad. Un hallazgo clave es que el consumo de SV está asociado con una disminución de la ingesta de alimentos ultra procesados, pero no está relacionado con la ingesta de alimentos saludables sin procesar. Otros resultados indican que estas asociaciones se encontraron solo en personas que pertenecen a los subgrupos de altos ingresos, con limitaciones de tiempo, no diabéticas y mayores. Los resultados destacan la posibilidad de que las personas con una dieta de baja calidad pueden tener deficiencias de nutrientes, ya que no obtienen los nutrientes esenciales de la dieta o la suplementación.
Encapsulación y evaluación de la cepa de Pichia kluyveri YCPUC83 en co-fermentaciones con S. cerevisiae EC1118 en mosto sintético
Authors:   ,   Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal, Riquelme Toledo Francisca Andrea
Published: August 2023

Pichia kluyveri is a Non-Saccharomyces yeast that is characterized by its contribution to the aromatic potential of wines. However, it only survives in the first stage of fermentation before Saccharomyces cerevisiae completely dominates the medium. The main objective of this study was to evaluate the potential organoleptic contribution that Pichia kluyveri YCPUC83 has on the aromatic profile of wines obtained in co-fermentation with Saccharomyces cerevisiae EC1118. A sodium alginate-based medium that allows P. kluyveri to be encapsulated was evaluated in order to ensure its viability until the end of fermentation. Then, fermentations with encapsulated and non-encapsulated P. kluyveri were carried out in co-fermentation with S. cerevisiae EC1118 and oenological parameters and sensory profile of the wines were evaluated. The results of this study suggest that the encapsulation technique in P. kluyveri YCPUC83 turns out to be an interesting and innovative alternative for the oenological industry, since it is capable of improving fermentation performance, ensuring viability at the end of fermentation without affecting oenological parameters. On the other hand, co-fermenting with yeast improves the sensory profile of wines, as it demonstrates a clear trend in obtaining floral, fruity and tropical aromas compared to wines obtained by fermentation with S. cerevisiae EC1118.
Comparación de dos métodos agronómicos y uno geofísico para la determinación del estatus hídrico de suelo y planta en condiciones naturales y de cultivos frutales
Authors:   ,   Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal, Schmidt Kamp José Andrés
Published: August 2023

The current mega drought in Chile represents a major problem for fruit crops of the central regions and its native vegetation, the sclerophyll forest. The traditional methods to determine soil water status used in agriculture fail to deliver data that is representative of the soil profile in which roots from vegetation are distributed, due to non-uniformity in the soil texture. Electric Resistivity Tomography method (ERT) solves this problem by measuring the soil profile entirely at several depths. In this study, measurements of soil moisture were carried out in fruit orchards (apples and almonds), and in three locations with native vegetation, during a whole season following the same transect. Measurements include: Soil moisture by Frequency domain Reflectometry (FDR) and gravimetric method, soil apparent resistivity by ERT; and four physiological parameters taken in adjacent plants: stomatal conductance (gs), midday stem water potential (ψMD), maximum yield of PSII (Fv/Fm) and chlorophyl concentration. Both FDR and gravimetric methods had difficulties to explain the behavior of vegetation because they assume a point based humidity data as representative of the entire soil profile. The best method to predict the ecophysiological behavior in apple and in natural conditions was ERT.
Effect of Healthcare Facilities on Climate Change: A Systematic Review of the Carbon Footprint of the Nigerian Healthcare Sector
Authors: Sumayya Al-Mansur , Adekunle Adeniji Abdur-Rahman , Olatunji Tijani Yusuf , Oluwatomisin Lawal Abdulwahab , Praise Ogunleke , Rolake Akin-Adewale , Rasheedat Shittu , Maryam Akande , Sanyolu Solagbade Remi
Published: August 2023

Background: Climate change has continued to pose a global concern, as the resulting effect of the increase in greenhouse gas (GHG) emissions continues to have significant consequences on the planet and its inhabitants.

One of the major sectors contributing to the greenhouse effect is the healthcare sector, however, it is one of the sectors that has been overlooked and under reported.

Objective: This article aims at reviewing the carbon footprint of healthcare facilities in Nigeria and its impact on climate change, while highlighting important and effective strategies towards addressing it.

Methods: Data was obtained through a systematic review of available research articles obtained online via PubMed and Google scholar search engines, using the key words; climate change, healthcare facilities, global warming, and carbon footprint.

Results: Effective policy and regulatory frame works are essential towards addressing the carbon footprint of healthcare facilities; however a lot of gap still exists in curbing the effect of GHG emissions by healthcare facilities in Nigeria, as majority of healthcare facilities in Nigeria still rely significantly on the combustion of fossil fuels for generation of power due to its epileptic electrical power supply.

Conclusion: There is great need in addressing the effect of the carbon footprint of healthcare facilities on climate change. This can be achieved through the use of renewable energy technologies like solar and wind power, as well as the use of energy conservative measures such as the use of LED lighting and High-efficiency Heating, Ventilation, and Air Conditioning (HVAC) systems.
IRRIGAÇÃO DO DNOCS NA BAHIA: USO DAS ÁGUAS E A SOBERANIA ALIMENTAR
Authors: SOUZA LIMA João Fernando , Pertile Noeli PERTILE
Published: August 2023

Na década de 1970 o governo federal lançou um grande programa de irrigação com foco especial para a região do semiárido. Esse programa teve como principal objetivo fazer uso econômico das águas do vale do rio São Francisco e da grande capacidade de armazenamento hídrico dos açudes construídos até meados do século XX. Consistiu na implantação de dezenas de projetos públicos de irrigação em áreas suscetíveis ao investimento com retorno imediato. A implantação desses projetos de irrigação provocou importantes impactos socioespaciais e socio territoriais nos municípios receptores dos empreendimentos, especialmente no tocante à pressão sobre recursos hídricos e para a produção de alimentos. Nesse processo, o estado da Bahia recebeu três dos sessenta e dois projetos públicos de irrigação implantados na região Nordeste. Analisar os impactos desses empreendimentos sobre os recursos hídricos e sobre à soberania alimentar da população local é o objetivo desse artigo.
Cannabis Use and Perinatal Health Research
Authors: Lo Jamie O. , Hedges Jason C. , Metz Torri D.
Published: August 2023

This Viewpoint examines the significant gap in knowledge regarding the effects of cannabis use on perinatal health outcomes.
Presumed Autoimmune Pigmented Paravenous Retinochoroidal Atrophy in a Female Patient Aged 69 Years
Authors: Costa Celso , Marques João Pedro
Published: August 2023

This case report describes a diagnosis of presumed autoimmune pigmented paravenous retinochoroidal atrophy in a 69-year-old patient who presented with slowly progressive vision loss and nyctalopia.
Computationally Guided Synthesis of MXenes by Dry Selective Extraction
Authors: Rems Ervin , Anayee Mark , Fajardo Eiara , Lord Robert L. , Bugallo David , Gogotsi Yury , Hu Yong‐Jie
Published: August 2023

MXenes are a rapidly growing family of 2D transition metal carbides and nitrides that are promising for various applications, including energy storage and conversion, electronics, and healthcare. Hydrofluoric‐acid‐based etchants are typically used for large‐scale and high‐throughput synthesis of MXenes, which also leads to a mixture of surface terminations that impede MXene properties. Herein, a computational thermodynamic model with experimental validation is presented to explore the feasibility of fluorine‐free synthesis of MXenes with uniform surface terminations by dry selective extraction (DSE) from precursor MAX phases using iodine vapors. A range of MXenes and respective precursor compositions are systematically screened using first‐principles calculations to find candidates with high phase stability and low etching energy. A thermodynamic model based on the “CALculation of PHAse Diagrams” (CALPHAD) approach is further demonstrated, using Ti3C2I2 as an example, to assess the Gibbs free energy of the DSE reaction and the state of the byproducts as a function of temperature and pressure. Based on the assessment, the optimal synthesis temperature and vapor pressure are predicted and further verified by experiments. This work opens an avenue for scalable, fluorine‐free dry synthesis of MXenes with compositions and surface chemistries that are not accessible using wet chemical etching.
Iron‐Catalyzed Transfer Hydrogenation: Divergent Synthesis of Quinolines and Quinolones from ortho‐Nitrobenzyl Alcohols
Authors: Chun Simin , Reddy Putta Ramachandra , Hong Junhwa , Choi Seung Hyun , Oh Dong‐Chan , Hong Suckchang
Published: August 2023

Herein, we report the divergent synthesis of quinolines and quinolones via a transfer hydrogenative condensation of ortho‐nitrobenzyl alcohols in one step. The reaction proceeded using the cyclopentadienone iron complex without any additional redox reagents. After transfer hydrogenation between ortho‐nitrobenzyl alcohols and secondary alcohols, the subsequent Friedländer annulation affords polysubstituted quinoline products in 22–90% (39 examples). The developed method was also applied to synthesize quinolones by using primary alcohols instead of secondary alcohols (12 examples). The obtained quinoline products were converted into several drug candidates to demonstrate its synthetic potential.
Development of Lysine Crotonyl‐Mimic Probe to Covalently Identify H3K27Cr Interacting Proteins
Authors: Guo Xiaochun , Wang Yuena , An Yuhao , Liu Zhihong , Liu Jianbo , Chen Jiaxin , Zhan Mei‐miao , Liang Mingcha , Hou Zhanfeng , Wan Chuan , Yin Feng , Wang Rui , Li Zigang
Published: August 2023

Histone lysine crotonylation (Kcr) is one newly discovered acylation modification and regulates numerous pathophysiological processes. The binding affinity between Kcr and its interacting proteins is generally weak, which makes it difficult to effectively identify Kcr‐interacting partners. Changing the amide of crotonyl to an ester increased reactivity with proximal cysteines and retained specificity for Kcr antibody. The probe “H3g27Cr” was designed by incorporating the ester functionality into a H3K27 peptide. Using this probe, multiple Kcr‐interacting partners including STAT3 were successfully identified, and this has not been reported previously. Further experiments suggested that STAT3 possibly could form complexes with Histone deacetylase HDACs to downregulate the acetylation and crotonylation of Histone H3K27. Our unique design provided intriguing tools to further explore Kcr‐interacting proteins and elucidate their working mechanisms.