bluuebunny/crossref_metadata_2025 huggingface dataset:
Modern methods of diagnosing Peters anomaly
Authors:   S. Fyodorov Eye Microsurgery Federal State Institution, Kaluga Branch, Kaluga, Russian Federation, Trifanenkova I.G. , Tereshchenko A.V. ,   S. Fyodorov Eye Microsurgery Federal State Institution, Kaluga Branch, Kaluga, Russian Federation, Vydrina A.A. ,   S. Fyodorov Eye Microsurgery Federal State Institution, Kaluga Branch, Kaluga, Russian Federation, Ageeva T.A. ,   S. Fyodorov Eye Microsurgery Federal State Institution, Kaluga Branch, Kaluga, Russian Federation
Published: March 2023

Peters anomaly is a rare disease, significant in its consequences and leading to disability. According to the literature, Peters anomaly was recorded in approximately 700 cases in Russia, and around the world about 35,000 people have various forms of this pathology. The main cause of occurrence is the presence of a genetic mutation. The disease has a variety of phenotypic manifestations, differently interpreted by the authors depending on the research methods used and clinical experience. An important step in determining the optimal tactics and timing of surgical intervention for Peters anomaly is a thorough diagnostic examination of the child. The data presented in the literature indicate that optical coherence tomography and ultrasound biomicroscopy are highly informative research methods for corneal opacity. Their data are indispensable in making the correct diagnosis of Peters anomaly, determining the subtype and severity of the process, as well as choosing further tactics for managing patients. An urgent direction for further research is the identification of informative signs of Peters anomaly using modern research methods, the development of a complex of multimodal algorithms for multifaceted diagnostics in establishing a diagnosis, as well as the development of a systematic approach in determining subtypes, choosing tactics for managing and treating this pathology. Key words: Peters anomaly, diagnostic methods, etiology, follow-up, surgical treatment
Stress Related Determinants of Anxiety and Depression in Young Girls with Chronic Headache
Authors:   University of Trier, Frauenstr 7, 54290 Trier, Germany, Bung Simone , Saile Helmut ,   University of Trier, Frauenstr 7, 54290 Trier, Germany, Laessle Reinhold ,   University of Trier, Frauenstr 7, 54290 Trier, Germany
Published: March 2023

Girls with chronic headache often suffer also from marked anxiety and depression. The present study used psychological and biological characteristics related to stress load and stress coping to predict anxiety and depression. This was done by regression analysis. Anxiety could be better explained than depression. Psychological and physiological stress load played a significant role, but not activity of HPA axis, although cortisol awakening response was heightened specifically for headache sufferers.
Degree of Carbon Nitride Photocharging Controls Energetics of Hydrogen Transfer in Photochemical Cascade Processes
Authors: Savateev Oleksandr , Nolkemper Karlo , Kühne Thomas , Markushyna Yevheniia , Antonietti Markus
Published: March 2023

Photocharging of graphitic carbon nitrides (g-CN) is a process of electrons and charge-compensating cations accumulation in the material that is triggered by irradiating a mixture of the semiconductor and an electron donor with light. Although this process has been applied in sensing, energy storage and organic synthesis, the energetics of g-CN discharging has not been studied in details. Herein, we investigate transfer of e‒/H+ from g-CN photocharged with electrons and either protons (H+) or ammonium cations (NH4+) to an oxidant, such as O2 and imine. NH4+ exerts a strong stabilizing effect, which makes e‒/H+ transfer uphill. Especially in aqueous environment, NH4+ yields air-stable photocharged sodium poly(heptazine imide). In mildly-reduced g-CN, H+ do not stabilize electrons, which results in spontaneous transfer of e‒/H+ to oxidants. Facile transfer of e‒/H+ is a key step in a photocatalytic oxidative-reductive cascade – tetramerization of benzylic amines, which involves two photocatalytic events: i) oxidation of two benzylic amine molecules to the imine with a concomitant storage of 2e‒/2H+ in g-CN and ii) reduction of the imine to α-aminoalkyl radical that involves 1e‒/1H+ transfer.
Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylne compound
Authors: Imai Tomoya , Sakamaki Daisuke , Aoyagi Shinobu , Amaya Toru
Published: March 2023

Cyclic [3]spirobifluorenylene with bulky alkyl groups at the ends (1) was designed and synthesized to investigate the electron transfer phenomena in a -conjugated system including orthogonal π-conjugated chains. The three bifluorenyl units in 1 are conjugated to each other via spiro-conjugation, resulting in the splitting of the HOMO levels to a small extent. Therefore, the SOMO–HOMO gap of the radical cation species is small, which is considered to allow the facile intramolecular electron transfer. The electronic properties of 1 and its partial structures were characterized by absorption and fluorescence measurements and electrochemical analysis. From the electrochemical oxidation, the interchain Coulombic repulsion was observed. In the TD-DFT calculations for the radical cation species of 1, the geometry-featured interchain electronic transitions were visualized by NTO calculations. The radical cation species of 1 generated by chemical oxidation with SbCl5 exhibited a broadened and lower-energy shifted NIR absorption band compared to those of its partial structures. Considering the results of the TD-DFT calculations, the NIR band of the radical cation of 1 was attributed to the intramolecular electron transfer processes among the bifluorenyl units in the macrocycle. ESR experiments also indicated the delocalization of a spin of 1·+ in the whole molecule. This work demonstrates the usefulness of spiro-conjugation as a bridging unit in molecular wires to facilitate smooth electron transfer.
Electrochemical synthesis of poly(trisulfides)
Authors: Pople Jasmine , Nicholls Thomas , Pham Le Nhan , Bloch Witold , Lisboa Lynn , Perkins Michael , Gibson Christopher , Coote Michelle , Jia Zhongfan , Chalker Justin
Published: March 2023

With increasing interest in high sulfur content polymers, there is a need to develop new methods for their synthesis that feature better safety and control of structure. In this report, electrochemically-initiated ring-opening polymerization of norbornene-based cyclic trisulfide monomers delivered well-defined, linear poly(trisulfides), which were solution processable. Electrochemistry provided a controlled initiation step that obviates the need for hazardous chemical initiators. The high temperatures required for inverse vulcanization are also avoided resulting in an improved safety profile. Density functional theory calculations revealed a reversible ‘self-correcting’ mechanism that ensures trisulfide linkages between monomer units. This control over sulfur rank is a new benchmark for high sulfur content polymers and creates opportunities to better understand the effects of sulfur rank on polymer properties. Thermogravimetric analysis coupled with mass spectrometry revealed the ability to recycle the polymer to the cyclic trisulfide monomer by thermal depolymerization. The featured poly(trisulfide) is an effective gold sorbent, with potential applications in mining and electronic waste recycling. A water-soluble poly(trisulfide) containing a carboxylic acid group was also produced and found to be effective in the binding and recovery of copper from aqueous media.
Fabrication of ITO microelectrodes and electrode arrays using low-cost CO2 laser plotter
Authors: Kappalakandy Valapil Karthika , Szymon Filipiak Marcin , Rekiel Weronika , Jarosińska Elżbieta , Jönsson-Niedziółka Martin , Witkowska Nery Emilia
Published: March 2023

Excellent electronic and optical properties make indium tin oxide (ITO) an attractive electrode substrate. Despite the commercial availability of high-quality ITO and some low-cost methods for direct deposition being in use by now, the definition of patterns is still a concern. Putting its popularity and extensive usage aside, the manufacturing of ITO electrodes so far lacks a rapid, highly reproducible, flexible, cost-effective, easy patterning process that could surpass difficult, time-consuming techniques such as lithography. A cost-effective method based on CO2 laser irradiation for preparing ITO microelectrodes and electrode arrays is presented herein. Electrodes of different sizes and shapes were examined to identify the performance of the proposed methods. Direct ablation of the ITO layer was optimized for rectangular electrodes of 25, 50, and 100 µm width, while laser cutting of scotch tape stencils and subsequent wet etching were used to create circular electrodes with a diameter of 1.75mm. Together, both methods form a complete toolbox, which allows for low-cost and fast fabrication of ITO electrodes for wide variety of applications. A multielectrode array system consisting 8 of these circular electrodes was fashioned, fabricated, assembled and tested. The ITO electrodes were characterized electrochemically and as an example application they were used for monitoring anchoring behavior of HeLa and HepG2 cell cultures through cell-based electrochemical impedance technique.
Digitalization of Religious Space: A Philosophical View of the Problem
Authors:   Trans-Baikal State University, Fomina M. N. , Emikh N. A. ,   Trans-Baikal State University
Published: March 2023

The article attempts a philosophical analysis of the digitalization of religious space in the conditions of the «new reality». The emphasis is placed on the fact that the conditions provoked by the pandemic crisis contributed to the rapprochement of human religious life and virtual space. It is argued that a new reflection, forming a new picture of human existence within the boundaries of religious culture, arose as a result of a partial or complete loss of a person's traditional habitual level of communication. The article also gives the author's definition of religious space as a space of religious culture, within the boundaries of which the interaction of a person's religious being (religious life) and digital communication (virtual space) is seen. In the conditions of modern society, the problems and processes occurring within the boundaries of religious space are revealed through the prism of digitalization, transforming the field of communicative relations, which acquire a new meaning. The conclusion is presented that in religious culture there is a new style of communication at the level of digital communication, embedded in the religious being (religious life) of a person, where a person in his traditional appeal to God begins to see the possibility of a different form of interaction, i.e. through online resources. In this regard, it is noted that a new type of communication is being formed within the boundaries of the religious space, introduced by digital technologies.
Chinese-Russian Media Forum as a Platform for the Development of Diplomatic Relations
Authors:   Peoples' Friendship University of Russia, Su Shuai
Published: March 2023

The article is about the substantiation of the significance of the Sino-Russian media forum for the progress of diplomatic relations between the two countries. The features and role of intercountry interaction in the media for effective diplomatic relations are announced in this article; the tendencies of holding the Chinese-Russian media forum are systematized, the most important and priority areas of bilateral cooperation are highlighted. It has been proven that the basis for holding the Sino-Russian Media Forum is to ensure interaction between the media of both countries, which should deepen cooperation and mutual trust, promote exchange and mutual learning, constantly expand the achievements of practical cooperation and promote the development of Sino-Russian relations. Through this partnership, fruitful results are being achieved between the two sides: interpersonal and cultural exchanges, which have become an important part of the comprehensive strategic partnership and coordination between China and Russia. People-topeople exchanges and cooperation have not only strengthened the social and social foundation of the Sino-Russian comprehensive strategic partnership, but also brought comprehensive benefits to the development of bilateral relations.
Analysis on Effectiveness of Testing and Evaluation of Bridge Repair and Reinforcement
Authors: Liu Huigeng , Wu Ke
Published: March 2023

Bridge engineering is an important part of basic engineering in today’s transportation field, and its quality and performance have a vital impact on the improvement and development of modern transportation engineering. With the continuous development of transportation engineering, the maintenance and reinforcement of existing bridges are also being given more emphasis. In order to scientifically evaluate the effectiveness of bridge maintenance and reinforcement, this paper analyzes its detection and evaluation, including the significance, key points, and main methods of detection and evaluation. Therefore, this analysis aim to provide some reference for the maintenance and reinforcement and the quality improvement of bridge engineering.
Structure Bearing Capacity Testing and Evaluation of Existing Bridges
Authors: Liu Huigeng , Zhou Zonglin
Published: March 2023

The bearing capacity testing and evaluation of the existing bridge engineering structure is not only the key to clarify its structural quality and safety performance, but it also can lay a solid foundation for subsequent repairs and maintenance work. To ensure the bearing capacity, durability and reliability of existing bridges, this paper analyzes the importance and methods of testing and evaluation of structural bearing capacity of a bridge. This analysis aims to provide scientific reference for the quality assessment and subsequent repair and maintenance of existing bridge engineering structures.
Exploration on Integrated Teaching Mode of Geomorphology and Geography Under the Background of Intelligent Education
Authors: Zhang Chenguang , Liu Yize , Niu Jiqiang , Liu Minghua , Li Xiumei , Shi Xingjun , Li Zongmeng , Duan Na
Published: March 2023

Under the rapid industrial development, the requirements for talents have become diversified and comprehensive, resulting in higher requirements for the teaching methods and quality of colleges and universities. Taking the geomorphology and geography courses as an example, teachers need to make effective reform and innovation according to the existing problems, so as to cultivate high-quality comprehensive talents to meet the requirements of the industry. Therefore, an in-depth study was carried out on the teaching reform strategies of geomorphology for geography major in normal universities to provide reference for relevant teachers.
Effect of mulch on yield of groundnut (Arachis hypogaea) in Nepal
Authors: Bhattarai Sovika , Wagle Pramod , Dahal Biplov , Jaggi Kalpana
Published: March 2023

Weeds are the most important biotic constraints to groundnut production in Nepal. They hinder the plant growth and increase the cost of production. A field based study was conducted from June, 2022 to December, 2022 at Oilseed Research Program, Sarlahi, Nepal to study the effect of mulch on the productivity of groundnut. The experiment was laid out in randomized complete block design with 7 treatments viz., rice husk, rice straw, black polythene sheet, Lantana camara, living mulch, sawdust and control in three replications. The fertilizer dose used for groundnut was 20:40:20 NPK kg per hectare. The pod yield in rice husk mulch and living mulch treatments were significantly higher (2.07 and 1.84 tons per hectare, respectively) whereas the lowest yield (0.83 tons/hectare) was observed in plot with no treatment). Lower weed infestation with weed biomass 0.046 tons/ha for narrow leaf weeds and 0.021 tons/ha for broad leaf weeds was observed in L. camara mulching.  Rice husk mulching produced significantly higher number of pods (29 pods per plant) with the highest benefit cost ratio (1.15) whereas black polythene mulching produced lower number of pods (23 pods per plant) with lowest benefit cost ratio (-0.33). Conclusively, the study's finding suggests that rice husk can be used as a mulching material to increase the productivity of groundnut.
Nursing and management of early produced larvae of Thai pangas (Pangasianodon hypophthalmus) using greenhouse concept
Authors: Das David Rintu , Mithun Mahmudul Hasan Mithun , Moniruzzaman Md. , Khanum Maliha , Mahmud Yahia
Published: March 2023

This experiment was conducted for the development of nursing techniques of early produced larvae of Thai pangus (Pangasianodon hypophthalmus) using Greenhouse concept for a period of 40 days from 10th February to 20th March 2020. The experiment was designed into two treatments (i) Greenhouse pond (GP) and (ii) Control or open ponds (CP) having three replicates each. Greenhouse concept was used for increasing the temperature during the winter month for proper growth and survival of the spawn. For this purpose, three ponds were covered with transparent polyethylene sheet fastened into bamboo frame and three ponds with no such covering. All the nursery ponds were stocked at a density of 20 g hatchling/decimal with 3 days old P. hypophthalmus. After 40 days of nursing period, the highest mean final length, weight gain and survival rate of fry were found to be 9.75 cm, 12.44g and 73.19% in greenhouse pond where in Control ponds it was 6.39 cm, 7.22g and 58.08%, respectively. A significantly higher (p<0.05) mean gross production of 6.07 kg/ decimal was found in greenhouse pond where in Control ponds it was 2.80 kg/ decimal in 40 days of nursing period. Water quality parameters were found to be better with good primary production in the green house ponds due to retaining day light temperature by polyethylene sheet. Results from the present experiment indicated that greenhouse technique can be suitable for the nursing and management of early produced larvae of Thai pangas with proper growth and good survival rate.
Penerapan Teknologi Tepat Guna dalam Upaya Meningkatkan Produktivitas Pengupasan Bawang Pengusaha Coto Makassar
Authors: Irvawansyah Irvawansyah , Mustafa Syahrul , Den Ka Veronika Sari
Published: March 2023

Indonesia merupakan negara agraris dengan sumber daya alam yang melimpah khususnya pada rempah-rempah. Salah satu rempah-rempah yang banyak dibutuhkan oleh masyarakat Indonesia adalah bawang. Bawang merupakan salah satu komoditi yang sangat dibutuhkan dalam kehidupan masyarakat, khususnya pada olahan bahan makanan (kuliner). Bawang terdiri dari beberapa jenis seperti bawang merah, bawang putih dan bawang bombai. Salah satu jenis makanan yang membutuhkan bawang adalah makanan khas Makassar yaitu coto Makassar. UMKM rumah makan coto mengolah bawangnya secara mandiri dan menggunakan metode tradisional. Proses pengolahannya terdiri dari tahap (1) pengupasan, (2) pencacahan, dan (3) penggorengan. Rata-rata kebutuhan bawang untuk UMKM rumah makan coto Makassar berkisar 50 kg/hari dan membutuhkan waktu pengupasan selama 12 jam. Program PkM ini menggunakan metode Research and Development. Hasil dari PkM ini adalah:(1) mesin pengupas bawang sederhana yang dapat diimplementasikan di UMKM rumah makan coto Makassar, (2) efisiensi waktu pengupasan 4 jam 10 menit untuk 50kg bawang atau berkisar 65.27%, dan (3) penerapan teknologi untuk mengatasi permasalahan yang terjadi pada UMKM rumah makan coto Makassar.
Pelatihan Pengelolaan Aplikasi Digital untuk ZISWAF di Jaten Sendangadi Mlati Sleman
Authors: Atmaja Fajar Fandi , Yusuf Syaifulloh
Published: March 2023

Potensi besar dari Zakat, Infak, Sedekah dan Wakaf tidak dimanfaatkan secara baik oleh masyarakat sekira masjid. Kurangnya literasi dan koordinasi serta transparansi menjadi sebab minimnya partisipasi masyarakat. Tujuan kegiatan pengabdian kepada masyarkat ini adalah untuk meningkatkan pengetahuan teori dan pengelolaan Zakat, Infak, Sedekah dan Wakaf, pada masyarakat di sekitar masjid al-Musthofa Jaten. Selain itu, adanya pengabdian bertujuan untuk semakin melibatkan banyak elemen masyarakat yang berpatisipasi aktif dalam peningkatan penerimaan dan optimalisasi pengelolaan ziswaf. Metode yang digunakan dalam pengabdian adalah (1) Brainstorming FGD (Focus Group Discussion) (2)ceramah dan diskusi (3) praktik dan konsultasi pengelolaan ZISWAF. Hasil dari pengabdian ini, masyarakat mulai memahami literasi ZISWAF baik secara teoritis maupun praktis. Tim pengabdian mengadakan penyuluhan dengan materi ZISWAF secara teoritis bersumber dari Al-Qur’an, Hadis dan kitab-kitab fiqh. Sedangkan secara praktis, tim pengabdian memberikan tata cara pengelolaan ZISWAF dengan memberikan contoh dan studi kasus dari berbagai masjid. Selain itu, tim juga berhasil meluncurkan program donasi ZISWAF digital dengan memanfaatkan fasilitas QRIS dari BSI (Bank Syariah Indonesia). Adanya program ini memberikan kemudahan dan memperluas jangkauan masyarakat yang ingin berdonasi untuk masjid. Tim juga memberikan program monev (monitoring dan evaluasi), supaya bisa dilaksanakan secara rutin setelah adanya pengabdian.
Pengembangan Kompetensi Guru SD Negeri Wonosari I pada Masa Pandemic Covid-19 dengan Pelatihan Produksi Video Media Pembelajaran Menggunakan Smartphone
Authors: Oktora Dina Dwika , Karunianingsih Diyah Ayu , Kristiadi David
Published: March 2023

Kegiatan pengabdian masyarakat ini bertujuan untuk mengembangkan kompetensi guru-guru SD Wonosari 1 dalam membuat video media pembelajaran dengan menggunakan smartphone. Kegiatan pelatihan dilakukan secara luring namun tetap menggunakan protocol kesehatan yang dianjurkan pemerintah dengan melalui metode ceramah, Tanya jawab dan praktik produksi yang dibimbing langsung oleh para pengajar. Setelah kegiatan pelatihan dilakukan evaluasi kegiatan dengan menyebarkan kusioner kepada peserta. Hasil evaluasi menunjukkan bahwa program PKM  berlangsung dengan baik dan lancar. Program ini diharapkan mampu memberikan motivasi bagi para guru untuk dapat meningkatkan motivasi  dalam mengembangkan bahan pembelajaran melalui produksi video media pembelajaran untuk mendukung pembelajaran secara daring, khususnya di masa pandemic Covid-19.
Взаимодействие атомарного кислорода с поликристаллической поверхностью Au, изученное методами РФЭС и ТПД
Authors: Стадниченко А.И. , Кощеев С.В. , Боронин А.И.
Published: March 2023

Методами РФЭС и ТПД проведено детальное исследование адсорбции атомарного кислорода на поверхности поликристаллического золота. Исследование показало, что начальные этапы воздействия атомарного кислорода приводили к формированию слоя хемосорбированного атомарного кислорода в диапазоне покрытия Q = 0,0 - 0,5 МС. Увеличение воздействия атомарного кислорода привело к образованию двумерного оксида золота. При максимальном насыщении кислородом расчетная толщина оксидного слоя составляла 3 Å и соответствовала стехиометрии, близкой к AuO2. ТПД-анализ показал, что термическая стабильность адсорбированного кислорода составила 510К для хемосорбированного слоя и 525К для двумерного оксида золота. Структура двумерного оксида золота определялась как один слой атомов золота и два слоя кислорода – адсорбированные на поверхности и внутри подповерхностного слоя. Реакционная способность адсорбированного кислорода была протестирована посредством взаимодействия СО и Н2 при комнатной температуре, и было обнаружено, что все формы кислорода активны. Установлено, что реакционная способность по отношению к СО выше на 2 порядка, чем к Н2, что указывает на роль форм кислорода в механизме PROX.
Сотоподобный 3d-координационный полимер бария с анионами 2-фуранкарбоновой кислоты ‒ эффект термической стабильности
Authors: Никифорова М.Е. , Луценко И.А. , Долгушин Ф.М. , Хорошилов А.В. , Кискин М.А. , Ерёменко И.Л.
Published: March 2023

Взаимодействием ацетата бария(II) и 2-фуранкарбоновой кислоты (пирослизевая, Hfur) в водно-спиртовом растворе получен координационный полимер состава [Ba5(fur)10(H2O)4]n (1). По данным РСА 1 содержит три симметрически-независимых катиона Ba2+, различающиеся способами координации fur- анионов и координационными числами. Все три атома кислорода фуроат-анионов образуют хелатные и мостиковые координационные связи с катионами, приводящие к сложно устроенному 3D-каркасу с сотоподобной структурой. Сетка катионов Ba2+ в 1, представляющая чередующиеся би- и трехъядерные линейные фрагменты, обусловливает высокую термическую стабильность по данным синхронного термического анализа (СТА). Дегидратация координированных молекул воды из состава 1 не приводит к разрушению каркаса до 400 °С.
Analisis Daerah Rawan Kecelakaan Lalu Lintas di Jalan S. Supriadi, Kota Malang
Authors: Sutriasti Maria Rosari , Prihantono Herdin , Prihatiningsih Bekti
Published: March 2023

A traffic accident is an unexpected and unintentional road event involving vehicles with or without road users. Observations were made on Jalan S. Supriadi, Malang City with the aim of finding out the points of traffic accident-prone areas and the causes of accidents. The methods used are Equivalent Accident Number (EAN), Upper Control Limit (BKA) and Upper Control Limit (UCL). The results of the analysis show that Km 0 - 0.7 and Km 1.4 - 2.1 are black spot points where the EAN Km value is 0 - 0.7 = 115, the EAN Km value is 1.4 - 2.1 = 109 , exceeding the control limit of BKA. UCL value at Km 0 - 0.7 BKA = 75, UCL = 87 and at Km 1.4 - 2.1 BKA = 75, UCL = 86. Factors causing the accident at the black spot on Jalan S. Suoriadi Malang, the main factor is due to human error. Not careful in driving, not orderly, careless, and sleepy. In addition to this, it is also caused by road alignment factors that do not meet the requirements, there are no adequate markings and signs for non-motorized traffic, road pavement markings are not clearly visible and there is no special parking space available for vehicle stops.
Procesos de enseñanza-aprendizaje en línea y el papel de los profesores ecuatorianos de esl como facilitadores durante la pandemia: reflexiones y análisis (Quito, marzo 2020-noviembre 2021)
Authors: Aulestia Vallejo Luis Enrique , Pizarro Aguirre Verónica
Published: March 2023

En 2019, el mundo fue atacado sin piedad por el covid-19 y sus variantes, sin mostrar signos de recesión hasta ahora. La pandemia transformó la vida de las personas en muchos aspectos, siendo la educación una de las áreas más sacudidas. Desde entonces, la educación virtual ha ocupado un lugar central en la mayoría de los países, la que ha llegado a miles de estudiantes de forma sincrónica o asincrónica. En países vulnerables como Ecuador, sin embargo, le costó despegar debido a los problemas socioeconómicos. No obstante, a pesar de las dificultades encontradas, algunas instituciones educativas fueron capaces de afrontarlo mejor que otras aplicando respuestas creativas en la transición de la educación presencial a la virtual. Se inauguró un tiempo de descubrimiento e intercambio educativo en algunas instituciones públicas de Ecuador, abriendo experiencias de aprendizaje renovadas a lo largo de la transición. Esta investigación cualitativa explora y analiza las reflexiones y percepciones de los estudiantes de una universidad pública de Quito sobre su experiencia de aprendizaje de idiomas en línea, evaluando el contenido del curso, el proceso de aprendizaje y el desempeño del profesor, entre marzo de 2020 y noviembre de 2021.
Análisis sobre las actitudes, conductas y síntomas presentados en estudiantes universitarios durante la pandemia covid-19
Authors: Páez Maybritt , Pérez Jennifer , Llamuco Hilda Karla
Published: March 2023

Esta investigación procura analizar las actitudes, conductas y síntomas en los estudiantes de la Universidad de las Fuerzas Armadas ESPE en tiempos de pandemia. El coronavirus SARS-CoV-2 con su enfermedad denomina COVID-19 se detectó por primera vez en diciembre de 2019 en la ciudad de Wuhan, provincia de Hubei, en China. Mayoritariamente, en un 80% de los casos solo produce síntomas leves respiratorios. Sin embargo, hubo un gran porcentaje de mortandad en sus inicios debido a la falta de conocimiento, prevención y tratamiento del virus.

Este proyecto muestra las consecuencias que conlleva la ansiedad en los estudiantes a causa del coronavirus (COVID-19) puesto que significó un cambio de vida, llevándolos a confinarse, aislarse, y mantenerse en casa por largos periodos de tiempo; y otras situaciones para las que los estudiantes no estaban preparados mental, ni psicológicamente.
How are we preparing future English teachers?: A study of the curricular variations among selected efl undergraduate programs
Authors: Cajas Diego , Chicaiza Verónica , Cherres Karina
Published: March 2023

In order to improve the pre-service formation in Ecuador, the government created an education standardized curriculum to be used for all Higher Educational Institutions (HEIs) offering education undergraduate programs. Unfortunately, when designing this curriculum, curriculum developers did not consider the particularities of all different pre-service programs existing in the country, for instance, English language teaching and focused more on primary education. This lack of consideration for different education undergraduate programs resulted in difficulties in adopting the standardized curriculum in other specializations. This research presents the different variations existing among the English language teaching curricula which resulted from the attempts to adopt the standardized curriculum in English language teaching pre-service formation; as well as the challenges and difficulties that curriculum developers faced during this process. Using a mixed-methods research methodology, results showed that curriculum variations revolve around the total number of practicum hours, low percentage of the use of English as a means of instruction, scarce common academic subjects despite the existence of common profession[1]al competencies, and differences in the total number of instruction hours.
A reflection on community-service activities: Influence of teaching-learning through community-service activities in undergraduate students.
Authors: Gonzalez Gonzalez Sandra Jazmin
Published: March 2023

Service-learning constitutes a relatively new activity in Ecuadorian higher education contexts, which aims to provide the community in need with a service while the participating undergraduate students learn about their future profession while practicing in real contexts. This article presents the importance of changes and reflection that the aforementioned Pedagogía de los Idiomas Nacionales y Extranjeros (PINE) students experienced during the service-learning practices included in their curriculum. Apprentices who participated in this research were invited to an in-depth interview. They were asked to tell their stories and experiences during their involvement in projects where they taught English to children from 5 to 11 years old in a virtual modality in different PINE programs in the last year. These interviews were later analyzed using the narrative analysis method in its content analysis form, which consists of listening to the testimonies, after recording, transcribing, and coding them, extracting only the most relevant information for the research from students’ narratives. After analyzing the interviews, the data showed that PINE students, after a time frame of participating in the aforementioned activities, experienced plenty of changes in their practices when it comes to their professional training linked to the community and reflection played a key role in that process. After the analysis, the results show that students’ exposure to service-learning practices greatly influenced their perceptions about teaching and the practices they consider important during formal instruction.
Methods, techniques, and strategies to motivate students of English as a foreign language to improve the speaking skill
Authors: Rosado Morales Laura Ximena , Vaca-Cárdenas Mónica
Published: March 2023

Speaking is one of the most important skills a student should practice when learning a foreign language. However, many students are afraid of speaking because they do not want to make mistakes. A lack of motivation is a problem that affects students who are disengaged from learning. When motivation is missing in the learning process, serious consequences can occur. Therefore, the purpose of this research is to determine methods, techniques, and strategies to motivate students of English as a Foreign Language (EFL) to improve the speaking skill. This study is a review article, where bibliographic, analytical, and synthetic methods were employed. Articles were selected from different sources such as Google scholar, Redalyc, Scielo, Eric, and other databases. Among the main results, different methods, techniques, and strategies were found to motivate students to improve the speaking skill and subskills, which can be applied by English teacher, according to their students’ level of education, age and needs. It is concluded that motivation is sometimes overlooked by some EFL teachers and authorities. Nevertheless, teachers have the responsibility to use different strategies and techniques to motivate and engage students.
Sentiment Analysis of Electricity Company Service Quality Using Naïve Bayes
Authors: Astuti Yuli , Yova Ruldeviyani  , Faris Salbari  , Aldiansah Prayogi
Published: March 2023

In facing the era of technological disruption, a large company providing electricity in Indonesia, namely PT PLN is transforming to digitize all business processes and improve the quality of customer service. PLN Mobile application was developed in December 2020, and 18 million users have downloaded it. PLN Mobile application provides various electrical services for users. There are a lot of online opinions today. Organizations need to know the public perception of their product or service, sales projections, and customer happiness. Our research will identify public opinion (positive and negative) about PLN Mobile Application using sentiment analysis by taking review data from Google Play Store. Sentiment analysis is classified using Naïve Bayes and analyzed based on the dimensions of the quality of electricity services: empathy, responsiveness, and reliability. The results of this study indicate that Naïve Bayes is quite well used for binomial labels (positive and negative) with an accuracy of 73%. Still, for service quality dimensions, the accuracy is 45%. Indonesian language datasets are quite difficult to process due to non-standard language, foreign words, mixed language variations, and abbreviations. Determination of ground truth or manual labeling requires consistency and skilled personnel to determine the context of the text data to obtain a model with optimal performance. This study informs the classification of each dimension of the quality of electricity services in Indonesia based on positive and negative sentiment data for PLN Mobile Application users. Reliability received the most negative sentiments. This can be used for PT PLN to improve the quality-of-service reliability to customers.
Manajemen Pemanenan Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Utara Petapahan, Kampar, Riau
Authors: Soheh Nur Said , Supijatno, M.Si Dr. Ir. , Sulistyono Eko
Published: March 2023

ABSTRAK

Kelapa sawit merupakan salah satu komoditas perkebunan penting sebagai sumber pemasukan devisa Negara Indonesia. Keberhasilan panen akan menunjang peningkatan produktivitas tanaman sehingga kegiatan pemanenan kelapa sawit merupakan salah satu kegiatan yang penting dalam pengelolaan perkebunan kelapa sawit. Penelitian dilaksanakan di Kebun Utara Petapahan, Kampar, Riau pada tanggal 18 Januari hingga 17 Mei 2021. Penelitian bertujuan untuk mengevaluasi manajemen pemanenan kelapa sawit. Aspek yang diamati meliputi perencanaan panen, pelaksanaan panen, dan evaluasi panen. Kegiatan pemanenan di Kebun Utara Petapahan sudah berjalan cukup baik, terlihat dari hasil produksi harian yang sesuai dengan taksasi produksi dengan nilai varian rata-rata dibawah 5% dan muatan panen pada alat truk yang sudah sesuai kapasitas. Walaupun demikian beberapa hal masih perlu diperbaiki dan ditingkatkan seperti rotasi panen yang masih panjang, pengadaan alat pelindung diri (APD) kaca mata dan kepatuhan dalam penggunaan helm yang masih dibawah angka 100%, mutu buah busuk yang sudah diatas standar sebesar 1.69% dari batas toleransi 1% , kapasitas pemanen rata-rata masih belum mencapai basis panen, kehilangan hasil berupa berondolan yang tidak terkutip dan buah matang tidak di panen masih ditemukan pada saat pemeriksaan hanca.

Kata kunci: kapasitas pemanen, ketepatan panen, perencanaan panen
¿Mínimos cuadrados ordinarios o regresión frontera estocástica para estimar la línea de autoaclareo con la ecuación de Yoda?
Authors: Tamarit Urias Juan Carlos
Published: March 2023

La determinación precisa de la línea de autoaclareo mediante funciones tamaño-densidad junto con las guías para manejar la densidad (GMD) son insumos fundamentales para gestionar la densidad de rodales. Objetivos: (1) comparar las técnicas de ajuste de parámetros de mínimos cuadrados ordinarios lineales (MCO-L) combinada con criterios para desplazar la línea promedio y regresión frontera estocástica (RFE) para determinar la línea de autoaclareo con la ecuación de Yoda; (2) generar una GMD para Pinus montezumae en Puebla, México. Se utilizaron 90 sitios de muestreo circulares de 0.10 ha, ubicados en condición de alta densidad, cubrieron un amplio intervalo de edad y condiciones de crecimiento. Las variables número de árboles (N) y volumen promedio por árbol (Vp) se escalaron a una hectárea. Para MCO-L se aplicaron criterios teóricos para modificar el valor del intercepto (parámetro ) y desplazar la línea promedio a la frontera superior de las observaciones; para RFE se evaluaron las modalidades del modelo seminormal (MSN), modelo normal truncado (MNT) y modelo normal exponencial (MNE). Con el criterio de utilizar Vp y N del sitio con el índice de densidad del rodal máximo para aumentar el parámetro del intercepto, MCO-L reproduce una línea de autoaclareo similar a las modalidades de RFE. Por tanto, se seleccionó a RFE-MSN para reproducirla. El índice de densidad del rodal de Yoda fue de 9.2 m3. Con una alometría específica y 100 árboles ha-1 como densidad de referencia, se delimitaron las zonas de crecimiento de Langsaeter que conformaron la GMD, esta es útil para prescribir regímenes de aclareos.
Pengaruh Pemberian Pekerjaan Rumah (PR) Terhadap Hasil Belajar Matematika
Authors: Angriani Lika
Published: March 2023

Penelitian ini dilatarbelakangi oleh motivasi belajar siswa kurang, siswa kurang disiplin pada saat kegiatan pembelajaran berlangsung, guru belum optimal dalam memberikan motivasi kepada siswa, strategi yang dipakai oleh guru belum optimal, kurangnya luar belajar dan tukang pengajar ataupun pendidik dan hasil belajar siswa masih rendah. Atas dasar ini, rumusan permasalahan dalam peneltian ini adalah apakah pengaruh pemberian pekerjaan rumah (PR) terhadap hasil belajar matematika kelas V di SD Negeri 84 Kota Bengkulu. Tujuan dari penelitian ini adalah untuk mengetahui ada tidaknya pengaruh pemberian pekerjaan rumah (PR) terhadap hasil belajar matematika kelas V di SD Negeri 84 Kota Bengkulu tahun ajaran 2019/2020. Adapun sampel dalam penelitian ini berjumlah 44 orang siswa, sehingga penelitian ini adalah penelitian langsung yaitu dengan memberikan pertanyaan berupa angket kepada siswa. Adapaun tehnik pengumpulan data yang digunakan yaitu angket dan dokumentasi. Hipotesis penelitian ini adalah “ada pengaruh antara pemberian pekerjaan rumah (PR) terhadap hasil belajar matematika kelas V di SD Negeri 84 Kota Bengkulu tahun ajaran 2019/2020. Ho ditolak dan Ha diterima, maka terdapat pengaruh yang signifikan antara pemberian pekerjaan rumah (PR) terhadap hasil belajar matematika kelas V di SD Negeri 84 Kota Bengkulu. Hasil penelitian ini menunjukkan besarnya pengaruh pemberian pekerjaan rumah (PR) terhadap hasil belajar matematika kelas V di SD Negeri 84 Kota Bengkulu. Hal ini dibuktikkan dengan analisis korelasi “r” hitung sebesar 0,922 lebih besar dari “r” tabel pada taraf signifikan 5% yaitu sebesar 0,304 dan pada taraf signifikan 1% sebesar 0,393 sedangkan  perhitungan regresi sederhana yaitu Y= 65,716 + (0,185) (40,20) = 73,153. Atas dasar ini, terbukti adanya pengaruh pemberian pekerjaan rumah (PR) terhadap hasil belajar matematika kelas V di SD Negeri 84 Kota Bengkulu.Kata Kunci: Pemberian Pekerjaan Rumah (PR), Hasil Belajar
Upaya meningkatkan Kemampuan Guru dalam Pembuatan Kelengkapan Perangkat Pembelajaran Melalui Daring Melalui Supervisi Kepala Sekolah di SDN 73 Selum
Authors: Suharyati Suharyati , Rahmat Azwar
Published: March 2023

Tujuan dalam penelitian tindakan sekolah ini adalah untuk mengetahui peningkatan kemampuan guru dalam pembuatan kelengkapan perangkat pembelajaran daring melalui  supervisi  Kepala  Sekolah  Di  SD  Negeri  73 Seluma  Tahun  Pelajaran  2020/2021. Berdasarkan hasil analisis dan pembahasan siklus I dan siklus II tersebut di atas, maka dapat disimpulkan bahwa: Melalui supervisi Kepala Sekolah di SD Negeri 73 Seluma tahun pelajaran 2020/2021 kemampuan guru dalam membuat kelengkapan perangkat pembelajaran daring mengalami peningkatan secara signifikan. Jika pada siklus I total nilai rata-rata keseluruhan hanya kompetensi guru meningkat dari siklus I yaitu persentase ketuntasan 66,67% dan 88,89% pada siklus II guru secara umum dikatakan tuntas dengan total nilai peningkatan rata-rata guru adalah adalah 8,67 dan total peningkatan persentase adalah 22,22% hal ini menunjukan usaha perbaikan yang dilakukan peneliti pada siklus II membawa perubahan. Supervisi akademik efektif digunakan untuk meningkat kompetensi guru di SD Negeri 73 Seluma dalam pembuatan kelengkapan perangkat pembelajaran daring.
BOOST of radiotherapy after conservative treatment in elderly women’s breast cancer: A review of the literature
Authors: Samia Khalfi  , Chaimaa Khalfi  , Asma Ghorebel  , Chiraz Nasr  , Safia Yahyaoui  , W. Hassani  , FZ. Farhane  , Z Alami  , T Bouhafa
Published: March 2023

Introduction: Breast cancer is the first female cancer in the world. The main objective of programmed radiotherapy after conservative surgery is to reduce the risk of local recurrence. Boost administered to the tumor bed has long been a subject of controversy in breast irradiation after conservative surgery, especially in elderly patients. We carried out a literature search aimed at clarifying the role of Boost on the tumor bed in conservative treatment in patients aged over 60 years. Methods: A review of the literature was carried out using the Pubmed, Cochrane Library, Science Direct and Google Scholar databases. The methodological quality of the studies was assessed using the Modified Sacket Scale (MSS). Results: Through this review of the literature, based essentially on six studies presenting a high level of proof according to the MSS scale, and on the recommendations of certain learned societies, we can conclude that the Boost on the tumor bed could be “avoided” in certain patients. patients over 60 years of age even after conservative surgery (Luminal A, small size). Conclusion: The development of gene or protein profiles that predict radiosensitivity could help select patients for radiation therapy and the dose to use.
Perancangan Kawasan Pesisir Trimulyo Berbasis Infrastruktur Hijau Melalui Pengembangan Neotradisional
Authors: Maulana Irvan Shihab , Sudrajat Agus Sarwo Edi
Published: March 2023

ABSTRAK Kelurahan Trimulyo merupakan salah satu wilayah pesisir yang terletak di pantai utara Laut Jawa. Kelurahan Trimulyo termasuk ke dalam Kecamatan Genuk, Kota Semarang, Jawa Tengah. Berdasarkan letaknya, Kelurahan Trimulyo mengalami beberapa permasalahan, seperti, banjir, rob, dan kumuh. Permasalah tersebut menyebabkan dampak yang cukup serius, salah satunya menyebabkan aksesibilitas para penduduk di Kelurahan Trimulyo terganggu. Namun, berdasarkan permasalahan tersebut, sebenarnya terdapat beberapa potensi yang dapat dikembangkan di wilayah pesisir Kelurahan Trimulyo tersebut, diantaranya dapat dijadikan sebagai tambak budidaya ikan yang nantinya hasil dari pertambakan tersebut dapat diolah untuk dijual sebagai hasil olahan ikan. Berdasarkan potensi serta masalah yang ada di wilayah pesisir delineasi perancangan Kelurahan Trimulyo tersebut, dapat dilakukan sebuah penelitian dengan harapan dapat dijadikan landasan untuk merancang ulang atau re-desain wilayah pesisir delineasi perancangan Kelurahan Trimulyo. Dengan adanya re-desain kawasan tersebut, nantinya diharapkan dapat mengatasi permasalahan yang ada di Kelurahan Trimulyo tersebut. Tujuan penelitian ini adalah sebagai arahan perancangan wilayah pesisir delineasi perancangan di Kelurahan Trimulyo berbasis infrastruktur hijau dan berkelanjutan dengan pengembangan neotradisional.  Kata Kunci : Perancangan; Pesisir; Trimulyo ABSTRACT Trimulyo Village is one of the coastal areas located on the north coast of the Java Sea. Trimulyo Village is included in Genuk District, Semarang City, Central Java. Based on its location, Trimulyo Village experienced several problems, such as flooding, rob, and others. This problem causes quite serious impacts, one of which causes the accessibility of residents in Trimulyo Village to be disturbed. However, based on these problems, actually there are several potentials that can be developed in the coastal area of Trimulyo Village, including those that can be used as fish farming ponds which later the results from these ponds can be processed to be sold as processed fish products. Based on the potential and problems that exist in the coastal area of the Trimulyo Village design delineation, a project can be carried out in the hope that it can be used as a basis for redesigning or re-designing the coastal area of Trimulyo Village design delineation. With the re-design of the area, it is hoped that later it will be able to overcome the problems that exist in the Trimulyo Village. The purpose of this research is as a design direction for the delineation of coastal area design in Trimulyo Village based on green and sustainable infrastructure with neo-traditional development.Keyword: Design; Coast; Trimulyo