bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study
Authors: Li Chenchen , Liu Shifu , Zhao Hongduo , Tian Yu
Published: January 2022

To advance the development of piezoelectric energy harvesters, this study designed and manufactured bridge-unit-based and pile-unit-based piezoelectric devices. An indoor material testing system and accelerated pavement test equipment were used to test the electrical performance, mechanical performance, and electromechanical coupling performance of the devices. The results showed that the elastic modulus of the pile structure device was relatively higher than that of the bridge structure device. However, the elastic modulus of the two devices should be improved to avoid attenuation in the service performance and fatigue life caused by the stiffness difference. Furthermore, the electromechanical conversion coefficients of the two devices were smaller than 10% and insensitive to the load magnitude and load frequency. Moreover, the two devices can harvest 3.4 mW and 2.6 mW under the wheel load simulated by the one-third scale model mobile load simulator, thus meeting the supply requirements of low-power sensors. The elastic modulus, electromechanical conversion coefficients, and electric performance of the pile structure device were more reliable than those of the bridge structure device, indicating a better application prospect in road engineering.
Taking Responsibility for Industrial Digitalization: Navigating Organizational Challenges
Authors: Carlsson Linnéa , Olsson Anna Karin , Eriksson Kristina
Published: January 2022

In this article, an employee perspective has been applied in aiming to explore how organizations face challenges and take responsibility for industrial digitalization, thus extending the research on the human-centric perspective in relation to Industry 4.0 technologies. To give emphasis to the human-centric perspective, the co-workership wheel was applied to identify and analyze data. The findings of an explorative longitudinal qualitative case study consisting of 35 in-depth interviews with informants from a manufacturing company were used. Additional data collection consisted of documents and project meetings. By applying a human-centric perspective, llessons learned from this case study show that taking responsibility for industrial digitalization is challenging and the importance of an adaptive organizational culture and a focus on learning and competence are crucial. We argue that the findings give useful implications for manufacturing organizations navigating the challenges of industrial digitalization to sense and seize the benefits of Industry 4.0 technologies.
Equations of State for Hadronic Matter and Mass-Radius Relations of Neutron Stars with Strong Magnetic Fields
Authors: Watanabe Chinatsu , Yoshinaga Naotaka , Ebata Shuichiro
Published: January 2022

Neutron star is an important object for us to verify the equation of state of hadronic matter. For a specific choice of equations of state, mass and radius of a neutron star are determined, for which there are constraints from observations. According to some previous studies, since the strong magnetic field acts as a repulsive force, there is a possibility that neutron stars with strong magnetic fields may have relatively heavier masses than other non-magnetized neutron stars. In this paper, the structure of a neutron star with a strong internal magnetic field is investigated by changing its internal functional form to see how much the neutron star can be massive and also how radius of a neutron star can be within a certain range.
Subtype H3N2 Influenza A Viruses: An Unmet Challenge in the Western Pacific
Authors: Kang Min , Zanin Mark , Wong Sook-San
Published: January 2022

Subtype H3N2 influenza A viruses (A(H3N2)) have been the dominant strain in some countries in the Western Pacific region since the 2009 influenza A(H1N1) pandemic. Vaccination is the most effective way to prevent influenza; however, low vaccine effectiveness has been reported in some influenza seasons, especially for A(H3N2). Antigenic mismatch introduced by egg-adaptation during vaccine production between the vaccine and circulating viral stains is one of the reasons for low vaccine effectiveness. Here we review the extent of this phenomenon, the underlying molecular mechanisms and discuss recent strategies to ameliorate this, including new vaccine platforms that may provide better protection and should be considered to reduce the impact of A(H3N2) in the Western Pacific region.
Underwater Fish Detection and Counting Using Mask Regional Convolutional Neural Network
Authors: Hong Khai Teh , Abdullah Siti Norul Huda Sheikh , Hasan Mohammad Kamrul , Tarmizi Ahmad
Published: January 2022

Fish production has become a roadblock to the development of fish farming, and one of the issues encountered throughout the hatching process is the counting procedure. Previous research has mainly depended on the use of non-machine learning-based and machine learning-based counting methods and so was unable to provide precise results. In this work, we used a robotic eye camera to capture shrimp photos on a shrimp farm to train the model. The image data were classified into three categories based on the density of shrimps: low density, medium density, and high density. We used the parameter calibration strategy to discover the appropriate parameters and provided an improved Mask Regional Convolutional Neural Network (Mask R-CNN) model. As a result, the enhanced Mask R-CNN model can reach an accuracy rate of up to 97.48%.
Effect of the Progressive Increase of Organic Loading Rate in an Anaerobic Sequencing Batch Reactor for Biodiesel Wastewater Treatment
Authors: Pereira Erlon , Borges Alisson , da Silva Greicelene
Published: January 2022

The wastewater from the biodiesel industry is an environmental problem, and from a sanitation resources perspective, the anaerobic sequencing batch reactor (ASBR) is an interesting alternative for wastewater treatment. A better understanding of ASBR operation behavior under the progressive increase of the organic loading rate (OLR) is crucial for upscaling. The objective of this study was to monitor an ASBR operating with an OLR ranging from 1.3 to 9.3 kgCOD m−3 d−1. The average chemical oxygen demand (COD) removal efficiencies of the ASBR were 52, 41, 47, and 11% for phases 1, 2, 3, and 4, respectively. The apparent kinetic coefficient, i.e., the rate of degradation of organic matter, was between 0.10 and 1.80 h−1, considering the kinetic model that considers the residual substrate concentration, which was the one that best fit the obtained data. The progressive increase in applied OLR modified the microbial biomass diversity, which in turn influenced the degradation kinetics of the organic matter. In addition, the values of the applied OLR of 5.1 kgCOD m−3 d−1 and a food to microorganism ratio (F/M) of 0.6 kgCOD kgVSS−1 d−1 were shown to be limiting values that promoted the overload of ASBR.
The importance of timely diagnosis and replacement of medical equipment in healthcare institutions
Authors:   State budgetary professional educational institution of the city of Moscow «Moscow State Educational Complex», Abysheva I.P.
Published: January 2022

The health care system around the world, both in developed and developing countries, is struggling with the problem of managing the provision of health care in conditions of limited resources. The availability and use of various medical equipment at all levels of the healthcare system were emphasized for the efficient and high-quality provision of services. The main purpose of this review article is to assess the availability and use of medical devices and identify the registered causes affecting the availability and use of medical devices in healthcare institutions.
Bacterial meningitis in the practice of a primary care physician. Clinical and immunological efficacy of recombinant interleukin-2 in the complex therapy of bacterial meningitis
Authors:   Department of Microbiology and Virology, Medical Institute, Peoples' Friendship University of Russia, Gizinger Oksana Anatolievna , Lepina Irina Yurievna , Bagdasaryan Marina Nikolaevna ,   N. N. Blokhin Russian Cancer Research Center,   Gemotest Laboratory, Russia
Published: January 2022

The article analyzes the pathogenetic features of bacterial meningitis and substantiates the scheme of complex therapy of the disease using the recombinant cytokine interleukin-2 (IL2). The clinical, immunological and microbiological efficacy of the complex therapy scheme has been revealed. It has been shown that the pleiotropic effects of recombinant IL-2, its effect on the activity of metabolic processes at the cellular and subcellular levels, the ability to stabilize the system of lipid peroxidation of cell membranes, the ability to influence the processes of clonal proliferation and differentiation of T- and B-lymphocytes, make its use justified in complex therapy of meningitis.
Estrategias metodológicas en proceso de enseñanza y aprendizaje de la gimnasia para estudiantes de Educación Física
Authors: Aguirre Valdeyglesias Mirta
Published: January 2022

El articulo tuvo como objetivo “evaluar las estrategias metodológicas”, con  el fin de conocer e indagar cuáles son las aplicadas en el proceso de enseñanza – aprendizaje de la gimnasia de Educación Física de La Escuela Profesional de Educación (UNSAAC) para el  año 2018. La investigación fue de tipo “aplicada”; con un nivel “descriptivo”. En tal sentido, se seleccionó una  muestra de 97 participantes entre docentes especialistas y estudiantes cursantes de la especialidad de Educación Física para la aplicación de un cuestionario de 20 ítems para conocer su perspectiva del estudio. Se concluyó que, las estrategias metodológicas aplicadas en el proceso de enseñanza-aprendizaje de la UNSAAC en la especialidad de Educación Física, son eficientes.
Long short-term memory networks enhance rainfall-runoff modelling at the national scale of Denmark
Authors: Koch Julian , Schneider Raphael
Published: January 2022

This study explores the application of long short-term memory (LSTM) networks to simulate runoff at the national scale of Denmark using data from 301 catchments. This is the first LSTM application on Danish data. The results were benchmarked against the Danish national water resources model (DK-model), a physically based hydrological model. The median Kling-Gupta Efficiency (KGE), a common metric to assess performance of runoff predictions (optimum of 1), increased from 0.7 (DK-model) to 0.8 (LSTM) when trained against all catchments. Overall, the LSTM outperformed the DK-model in 80% of catchments. Despite the compelling KGE evaluation, the water balance closure was modelled less accurately by the LSTM. The applicability of LSTM networks for modelling ungauged catchments was assessed via a spatial split-sample experiment. A 20% spatial hold-out showed poorer performance of the LSTM with respect to the DK model. However, after pre-training, that is, weight initialisation obtained from training against simulated data from the DK-model, the performance of the LSTM was effectively improved. This formed a convincing argument supporting the knowledge-guided machine learning (ML) paradigm to integrate physically based models and ML to train robust models that generalise well.
Characterization of Dogs and Cats Diagnosed With Diseases of the Urinary System in 2019: Veterinary Hospital, Faculty of Veterinary Medicine, University of San Carlos De Guatemala
Authors: Sharon Denise Alvarado-García , Daniela Mariel Villatoro-Chacón , Carmen Grizelda Arizandieta-Altán
Published: January 2022

If determined the casuistry of diseases that affect the urinary system in dogs and cats. A retrospective study was carried out at the Veterinary Hospital of the University of San Carlos de Guatemala. It was characterizing patients with diseases of the urinary system. 1,205canine and feline medical records were evaluated in 2019. The variables breed, sex, age, pathology and geographic area were considered. The prevalence of urinary system diseases in dogs and cats in 2019 was 10.45%, 9.21% corresponding to dogs and 1.24% tocats. In both species, males had a higher frequency of urinary system disease, compared to females (dog = 58.56% and cat = 66.67%). The most common etiologies in dogs were lower urinary tract infections (24.65%), bladder urolithiasis (16.90%), and acute and chronic kidney disease (28.16%); while in cats lower urinary tract disease (100%) and kidney disease (5.26%) were the main pathologies observed. In dogs, the most affected age range was in patients older than 8 years (52.25%), while in cats it ranged from 3 to 8 years (73.34%).
Oropharyngeal Dysphagia: A Proposal for an Ecological Theoretical Model
Authors: Rech Rafaela Soares , Garcia de Goulart Bárbara Niegia
Published: January 2022

Background: The exponential growth in epidemiological studies has been reflected in an increase in analytical studies. Thus, theoretical models are required to guide the definition of data analysis, although so far, they are seldom used in Speech, Language, and Hearing Sciences.
Objective: To propose a multicausal model for oropharyngeal dysphagia using directed acyclic graphs showing mediating variables, confounding variables, and variables connected by direct causation.
Design: This integrative literature review.
Setting: This was carried out until January 4, 2021, and searches were performed with the MEDLINE, EMBASE,and other bases.
Correlation of cutaneous blood microcirculation parameters with biological age in diabetic patients
Authors: Глазкова П.А. , Красулина К.А. , Глазков А.А. , Куликов Д.А. , Логина В.Е. , Ковалева Ю.А. , Куликов А.В.
Published: January 2022

Известно, что с возрастом и при ряде хронических заболеваний происходит снижение реактивности микроциркуляторного звена кровообращения. Целью данного исследования стала оценка взаимосвязи параметров кожной микроциркуляции с биологическим и хронологическим возрастом у пациентов с сахарным диабетом. В исследование были включены 11 человек с сахарным диабетом [медиана возраста 57 (51; 64) лет]; биологический возраст определяли с помощью калькулятора Aging.AI. Показатели кожной микроциркуляции оценивали с помощью метода лазерной допплеровской флоуметрии в ходе окклюзионно-теплового теста. Для анализа взаимосвязи количественных параметров рассчитывали коэффициенты ранговой корреляции Спирмена. Были выявлены значимые множественные отрицательные корреляции биологического возраста с показателями реактивности микрососудов как при тепловом, так и при окклюзионном воздействии (сила корреляций от -0,618 до -0,97, p<0,05). У лиц с сахарным диабетом снижение реактивности микрососудов в большей мере ассоциировано с биологическим возрастом, чем с хронологическим.

It has been established that the age together with the number of chronic diseases cause the decrease of the reactivity of the microcirculatory bed. This study aims to evaluate the relationship between cutaneous microcirculation parameters and biological and chronological age of patients with diabetes mellitus. 11 diabetic patients (median age 57 (51; 64) years) were examined in course of this study; biological age was figured by Aging.AI calculator. Cutaneous microcirculation parameters were measured by laser Doppler flowmetry with an occlusion-heating test. Spearman’s rank correlation coefficients were calculated to analyze the relationships between quantitative parameters. Significant multiple negative correlations of biological age and microvascular reactivity indices on exposure to both heat and occlusion (correlation strength from -0,618, to -0,97, p<0,05) were found. Diabetic patients have decreased microvascular reactivity that is more associated with biological age than with chronological age.
The Integration of Mind Mapping Technique in Storytelling to Assist EFL students in Mastering Speaking Skill
Authors: Saputra Nizar , Muntasir Muntasir
Published: January 2022

This research investigates the effectiveness of mind mapping implementation in storytelling to improve students' speaking skills.  This research was framed as an experimental method in which tests and interviews are used to analyze the data. The test consisted of pre-test and post-test, while the structured interview is used to find out students' perspectives toward using mind mapping in storytelling. The finding suggests a significant difference between students' speaking skills in retelling stories using mind mapping and without mind mapping. This difference could be seen from the distribution of the t-score, which is higher than the t-table. T-score is 6. 8, and the t-table is 1.7. The research also suggests that the students considered the mind mapping technique an excellent and effective technique applied in storytelling to improve their speaking performance. Based on the result, the application of the Mind Mapping Technique in storytelling in teaching speaking skills can be one of effective ways to improve the student's speaking performance.
Respon Tanaman Selada Keriting Hijau Terhadap Penyinaran Lampu LED dan Konsentrasi CaCl2 pada Sistem Hidroponik
Authors: Supriani Ernita , Budiyanto Susilo , Sutarno Sutarno
Published: January 2022

Produksi tanaman selada keriting hijau dipengaruhi oleh intensitas cahaya dan nutrisi yang berguna dalam kecepatan laju pertumbuhan dan perkembangan tanaman. Tujuan dari penelitian ini adalah mengevaluasi pengaruh tambahan penyinaran lampu LED dan pemberian konsentrasi CaCl2 terhadap pertumbuhan dan produksi tanaman selada keriting hijau. Penelitian dilaksanakan di greenhouse Dinas Ketahanan Pangan Kabupaten Boyolali pada bulan Mei – Agustus 2021. Penelitian menggunakan rancangan percobaan Tersarang dua tahap 4x4 dengan 3 kali ulangan. Faktor pertama adalah warna lampu LED yang terdiri dari 4 perlakuan, yaitu : tanpa pemberian (L0), LED berwarna merah (L1), LED berwarna biru (L2), dan LED berwarna merah dan biru (L3). Faktor kedua adalah konsentrasi penambahan CaCl2 yang terdiri dari 4 perlakuan, yaitu : 0 ppm (C0), 300 ppm (C1), 600 ppm (C2), dan 900 ppm (C3). Data dianalisis menggunakan ANOVA dan diuji lanjut menggunakan DMRT pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian konsentrasi CaCl2 belum berpengaruh pada semua parameter penelitian. Penyinaran lampu LED malam hari belum memberikan pengaruh terhadap tinggi tanaman dan jumlah daun selada. Penyinaran lampu LED merah biru (L3) meningkatkan laju pertumbuhan sebesar 0,928 g/hari, berat segar total 1,468 g, berat segar tajuk 1,411 g, berat segar akar 2,975 g yang setara dengan perlakuan penyinaran lampu LED merah (L1). Penyinaran lampu LED merah biru (L3) menghasilkan kandungan klorofil daun sebesar 0,928 mg/l yang setara dengan perlakuan penyinaran lampu LED biru (L2). Penambahan penyinaran lampu LED berwarna merah biru di malam hari dapat mempercepat dan meningkatkan produktivitas tanaman selada serta merupakan alternatif terbaik untuk budidaya selada.
Efektivitas Aplikasi Quizizz terhadap Kemampuan Metakognisi Mahasiswa UPBJJ UT-Majene pada Mata Kuliah Pendidikan Kewarganegaraan
Authors: Latif Abdul
Published: January 2022

21st century learning in the classroom is characterized by the use of ICT, collaboration, communication, and critical and creative thinking. To optimize the learning, it is necessary to optimize the metacognitive ability of students. This research is a quasi-experimental study by treating the application of the quizizz application to UPBJJ UT-Majene students, majoring in PGSD who programmed citizenship education courses. The research resulted in learning tools, namely Quizizz and RAT-SAT. The data collection tools used are performance tests, observation sheets, and student response questionnaires to the application of quizzz on metacognitive abilities. The data analysis used is descriptive statistical analysis and inferential statistics. The results showed that the quizizz application was effective on the metacognitive abilities of UPBJJ UT-Majene students, majoring in PGSD in civic education courses.
STRATEGI PROMOSI WISATA PADA DINAS PARIWISATA KABUPATEN MAMASA
Authors: Idastin Idastin , Abid Muhammad
Published: January 2022

This study aims to determine the tourism promotion strategy at the Mamasa Regency Tourism Office. This research use desciptive qualitative approach. Data collection techniques obtained from observation, interviews and documentation. The results of his research show that the seven main strategies carried out by the Mamasa Regency Tourism Office have been implemented but all of them have not run optimally so the desired results have not been achieved according to the target. This is due to inhibiting factors, namely insufficient facilities and infrastructure; human resources are still lacking; lack of regulations and a strong legal basis to regulate Mamasa tourism; and forms of overlapping management between government, foundations or families and the private sector.
PERANAN LEMBAGA KEMASYARAKATAN DALAM PEMBANGUNAN DI KELURAHAN MAMASA KABUPATEN MAMASA
Authors: Likubua Ruth , Fitra Nur , Saleh Ahmad
Published: January 2022

The purpose of this study was to identify and describe the role of the Village Community Empowerment Institution (LPMK) in accommodating and channeling community aspirations in development in Mamasa Village, Mamasa Regency and the role of the Village Community Empowerment Institution (LPMK) in increasing community participation in development in Mamasa Village, Mamasa Regency. The type of research used is descriptive qualitative research. The results of the study indicate that the role of LPMK in accommodating and channeling community aspirations has not been maximized. LPMK does not schedule the right time to hold a meeting with each head of the environment, so it is not effective in conveying the aspirations of each head of the environment to LPMK.
KINERJA APARATUR DINAS PERUMAHAN, KAWASAN PERMUKIMAN DAN PERTANAHAN KABUPATEN MAMASA (STUDI:PELAYANAN SERTIFIKASI TANAH PADA BIDANG PERTANAHAN)
Authors: Randan Beni
Published: January 2022

ABSTRAKPenelitian ini bertujian untuk mengetahui kinerja tim di dinas pertanahan kabupaten mamasa dengan realitas yang sangat tepat. Pengumpulan data di tentukan dengan teknik observasi, wawancara, dan dokumentasi. Peneliti menggunakan  triagulasi sumber untuk mengecek keabhasan data penelitian. Analisis data dalam penelitian ini menggunakan tiga komponen yaitu reduksi data, visualisasi data, dan penarikan kesimpulan. Hasil penelitian ini menunjukkan bahwa pengoperasian alat pemantau wilayah dinas pemukiman dan wilayah pemerintah kabupaten mamasa telah mmenetapkan indikator penampilan, keandalan, jaminan, produktivitas, daya tanggap, dan tanggung jawab dari masyarakat, persyaratan yang dibutuhkan dan proses yang dihadapi masyarakat masih berbelit-beli serta biaya yang terbilang tinggi.Kata Kunci: Kinerja Aparatur, Pelayanan Sertifikasi.
Evaluation of the effectiveness of the method of prevention and treatment of complications after the tooth removal surgery according to orthodontic indications
Authors: Godovanets O.I. , Dolynchuk L.V.
Published: January 2022

The study was performed on 59 orthodontic patients who underwent tooth extraction surgery. In 30 of them (the main group) the drug complex was used, and in 29 (comparison group) the tooth extraction operation was performed without any additional actions. Pharmacological correction included vitamin-mineral complex, immunomodulator, probiotic chewing pills "BioGaya ProDentis" for 1 month. Examinations of children took place before the start of medication and after tooth extraction surgery for 3–4 and 6–7 days. The level of lysozyme activity in the oral fluid of children was determined according to the method of G. Gorin in the modification of A.P. Levitsky and O.O. Zhigina, the content of sIgA, IgA, IgG – by simple radial immunodiffusion, the concentration of IL-1β and IL-4 – by enzyme-linked immunosorbent assay. A microbiological study was also performed.

The use of pharmacological complex for the prevention and treatment of post-extraction complications in orthodontic patients for microbial, immune and antioxidant background correction showed a pronounced clinical effect, manifested by the absence of any complications from maxillofacial tissues and probably lower intensity of such clinical signs, redness and swelling.

The microbiocenosis of the oral cavity of children who used our proposed means during the surgical stage of orthodontic treatment, showed quantitative and qualitative changes, which was a prerequisite for the normal course of the wound process. Examination of the oral fluid of children who underwent orthodontic surgery on the background of pharmacological correction, showed the restoration of its protective functions (increased lysozyme activity, sIgA levels, IL-4 concentration), which resulted in a postoperative period without complications.

Keywords: tooth extraction surgery, complications, microbiocenosis, protective mechanisms of the oral cavity.
First Job in the Profession I Trained For
Authors: Пивовар Е.И.
Published: January 2022

Редакция «Исторического вестника» обратилась ко мне с предложением опубликовать на страницах своего специального номера, материал посвященный мемуарной проблематике. Считая, что для читателей журнала будут иметь значение воспоминания о работе редакций исторических журналов нашей страны, предлагаю свои заметки. События, о которых пойдет речь в данном очерке, происходили в 70–80-х гг. прошлого века и отстают от нас сегодняшних уже на 35–50 лет. Многие мои учителя и старшие коллеги, к сожалению, уже ушли от нас в мир иной… Кардинально изменилось и продолжает меняться в жизни редакций периодических исторических изданий очень и очень многое. Некоторые явления и процессы, поступки участников тех событий трудно даже и представить современному молодому читателю… Тем не менее автор считает своим долгом историка воссоздавать картину прошлого, не приукрашивая и ничего не замалчивая, а также по возможности сохранить историческую память о тех своих учителях и коллегах, с которыми свела его судьба. Смею надеяться, что мои скромные усилия добавят некоторые живые штрихи к Вечной памяти об этих людях, хранящейся в десятках и даже в сотнях книжек журнала «История СССР», стоящих на полках библиотек в самых разных уголках мира.

The editorial board of the Historical Reporter suggested that I should publish some memoirs for the special edition of the magazine. Believing that the magazine's readers might be interested in how the editorial boards of history magazines operated in our country in the past, I decided to publish my notes. The events described in this piece took place in the 1970s–1980s, i.e. 35–50 years ago. A lot of my mentors and older colleagues have unfortunately passed away… A lot has changed and continues to change in how the editorial staff of history magazines operates. Younger readers might find it nearly impossible to imagine some of the processes, phenomena, and actions that happened in those days... Nevertheless, I believe it is my duty as a historian to relay the past as it happened, without embellishing or holding back anything, as well as to talk about my mentors and colleagues that I got to work with. It is my earnest hope that my humble work will bring to life the people behind the hundreds of the History of the USSR issues sitting on library shelves all over the world.
Comparative Analysis of the Economic Development Paths of Hungarian Counties
Authors: Kocziszky György , Szendi Dóra
Published: January 2022

The literature has analysed economic growth issues for nearly 250 years, and formulated theories, indicators and calculations. The same cannot be observed for economic development. This is reflected, among others, by the fact that some publications still use the terms economic growth and development synonymously. In the present study, the authors, after a brief theoretical overview of economic development and path dependency, quantified the economic development of 19 Hungarian counties and the capital city using a complex index, and then examined the changes in the index between 1995 and 2019. The final part of the paper analyses the expected similarities and differences in the development paths up to 2024. The counties have followed different development paths over the last 25 years, a trend that is also reflected over the forecast horizon. The development trajectories of the counties are more sensitive to shocks than the paths of specific GDP output, due to global, macro and local shocks that occur from time to time.
B-learning en la enseñanza del idioma inglés en el nivel superior: una revisión sistemática
Authors: Noa Stefany , Laura Kevin , Apayco Lesly , Ramos Zoraida , Lujano Yolanda
Published: January 2022

B-learning is widely regarded as an approach that combines the benefits of both the online and face-to-face learning components. However, the combination of online and face-to-face instructional components of this approach has raised concerns over the years. The following systematic review aims to show how b-learning influences the teaching of the English language in university students through the analysis of experiences and perceptions. The use of the Prism methodology has been considered for research purposes. For this review, the following databases were used: Scopus, Scielo, Science direct and Redalyc, finding 260 articles and selecting 16 articles for an in-depth review. The results show that most of the experiences with blended learning were beneficial in the field of teaching English. In addition, teacher and student perceptions are positive and decisive for the future use of digital technologies. This review highlights the need to carry out research that proposes solutions to address the challenges of students, teachers and educational institutions in blended learning, as well as the determination of characteristics of the model for an accessible implementation in the classroom
Enhancing excitons by oleic acid treatment in WS2, MoS2, and WS2/MoS2 heterostructure
Authors: Wang Yishu , Zhai Xiaokun , Feng Liefeng , Gao Tingge
Published: January 2022

The neutral and interlayer exciton originates from intralayer and interlayer coupling, respectively. Unlike neutral exciton, the interlayer excitons at room temperature are hard to observe and manipulate due to instability. In this work, we show the photoluminescence of WS2 and MoS2 neutral exciton can be improved by oleic acid passivation, allowing trion peaks to be observed at room temperature. More importantly, a 3-fold increase in peak intensity of interlayer excitons is achieved, and the energy peak is blue-shifted 107 meV. Our work paves the way to investigate excitons in two-dimensional transition metal dichalcogenides monolayers and heterostructures at room temperature.
An engineering model for high-speed switching in GeSbTe phase-change memory
Authors: Tominaga Junji
Published: January 2022

Ge2Sb2Te5 is the most successful phase-change alloy in non-volatile memory using the amorphous-crystal phase transition. In deriving further high performance in switching, especially the transition speed from amorphous to crystal should still be modified. In this work, we examined an ideal Ge2Sb2Te5 alloy based on the Kolobov model using ab-initio molecular dynamics simulations. As a result, it was clear that a uniaxial exchange between vacancies and Ge atoms plays a crucial role in realizing high-speed switching and a large contrast in the resonance bonding state in the alloy. The vacancy engineering enables the alloy switching speed to be extremely faster.
Nanosecond-scale all-optical Ti3C2T
x
-MXene modulator
Authors: Li Erkang , Jiang Man , Li Duidui , Wang Ruiduo , Kang Xin , Wang Tianqi , Ren Zhaoyu
Published: January 2022

Inspired by recent advancements of graphene-based ultrafast photonic devices, Ti3C2T
x
-MXene, as a graphene-like two-dimensional layer-structure material, has gained extensive interest in nonlinear optical applications, especially in all-optical intensity modulation. Herein, we successfully fabricated an all-optical modulator based on Ti3C2T
x
-Mxene/polyvinyl-alcohol film with nanosecond-scale response time, modulation speed of 100 kHz, and modulation depth of 10%. Furthermore, the variation of fall edges of modulated signal pulse caused by thermo-optic effect under different pump power was also observed. Considering the ease of fabrication, low cost, and ease of integration, the proposed modulator may open the door for high-speed all-optical communications and signal processing.
Terahertz-wave detector on silicon carbide platform
Authors: Ito Hiroshi , Shibata Norihiko , Nagatsuma Tadao , Ishibashi Tadao
Published: January 2022

We developed a novel terahertz-wave detector fabricated on a SiC platform implementing an InP/InGaAs Fermi-level managed barrier (FMB) diode. The FMB diode epi-layers were transferred on a SiC substrate, and a waveguide coupler and filters were monolithically integrated with an FMB diode. Then, the fabricated detector chip was assembled in a fundamental mixer module with a WR-3 rectangular-waveguide-input port. It exhibited a minimum noise equivalent power as low as 3 × 10–19 W Hz−1 at around 300 GHz for a local oscillator power of only 30 μW.
Kesiapan Calon Guru SD dalam Implementasi Asesmen Nasional
Authors: Nurjanah Eka
Published: January 2022

Penelitian ini bertujuan untuk mengetahui kesiapan calon guru SD terhadap implementasi Asesmen Nasional (AN) sebagai pengganti Ujian Nasional (AN). Pengetahuan tersebut meliputi sistem pelaksanaan AN, peserta AN khususnya di jenjang Sekolah Dasar, aspek-aspek yang dinilai dalam AN, dan persentase kesiapan calon guru SD sebagai pelaksana AN. Penelitian ini merupakan penelitian kuantitatif deskriptif dengan populasinya adalah calon guru SD pada Program Sarjana Pendidikan Guru Sekolah Dasar Universitas PGRI Yogyakarta tahun ajaran 2020/2021. Adapun jumlah sampelnya 50 calon guru SD semester 6. Instrumen yang digunakan berupa angket. Hasil penelitian menunjukkan bahwa pengetahuan calon guru SD khususnya semester enam belum memadai dimana hanya sekitar 33,3% calon guru yang telah mengetahuinya secara tepat. Pengetahuan calon guru dalam implementasi AN diperoleh hanya 41,7% yang menjawab secara benar dan tepat. Adapun pengetahuan akan perlunya dilaksanakan AN diperoleh 29,2% yang telah mengetahui secara tepat perlunya implementasi AN. Sedangkan untuk kesiapan calon guru SD sendiri dalam implementasi AN adalah 62,5% menyatakan siap. Simpulan penelitian ini adalah masih banyak calon guru SD yang belum mengetahui AN secara tepat dan calon guru SD yang masih belum siap dalam melaksanakan AN.
Penerapan Teori Konstruktivisme pada Pembelajaran Daring Interaktif
Authors: Budyastuti Yuni , Fauziati Endang
Published: January 2022

Penelitian ini bertujuan untuk memberikan gambaran tentang penerapan teori konstruktivisme yang terkait dengan pembelajaran daring interaktif di SMP Negeri 1 Pabelan. Metode penelitian yang digunakan adalah metode kualitatif dengan study pustaka. Subjek penelitian meliputi kepala sekolah, guru mata pelajaran kelas VIII, dan siswa kelas VIII sebanyak 32 siswa. Teknik pengumpulan data yaitu dengan observasi, dan wawacara. Hasil dari penelitian ini, siswa dapat mengonstruksi pemahamannya melalui pembelajaran daring dengan berbantuan media whatsapp seperti mengajukan pertanyaan melalui chat, atau voice note, mengerjakan tugas secara langsung melalui share link dari guru, memberikan feedback atau koreksi ke siswa dengan melampirkan bukti screenshoot, dan menyimpulkan materi secara bersama-sama dengan meminta siswa mengirimkan foto hasil rangkuman materi dan dibagikan pada chat grup, serta guru menambahkan, menjelaskan dengan disertai lampiran materi berupa doc, PPT, dan e-modul. Kesimpulan dari penelitian ini adalah melalui penerapan teori konstruktivisme dalam pembelajaran daring menunjukkan proses interaktif yang sangat baik antara guru dan siswa SMP Negeri 1 Pabelan.
Implikasi Teori Belajar Bruner dalam Model Pembelajaran Kurikulum 2013
Authors: Sundari Sundari , Fauziati Endang
Published: January 2022

Penelitian ini bertujuan untuk menganalisa teori belajar kognitif Bruner dari kajian studi pustaka yang relevan dan mendeskripsikan implikasi teori belajar kognitif Bruner dalam model pembelajaran kurikulum 2013. Penelitian ini menggunakan metode library research, teknik pengumpulan data studi dokumen. Hasil dari penelitian studi pustaka menunjukkan bahwa: (1) Bruner menganggap manusia sebagai pemikir, pemroses, dan pencipta informasi; (2) tiga proses kognitif yang berlangsung dalam belajar yaitu: memperoleh informasi baru, transformasi pengetahuan, dan evaluasi; (3) supaya pengetahuan dapat dengan mudah ditransformasikan perlu memperhatikan empat tema pendidikan untuk perkembangan siswa yaitu; struktur pengetahuan, kesiapan, intuisi dan motivasi; (4) proses pembelajaran dapat terlaksana dengan baik melalui tiga tahapan perkembangan kognitif yaitu: enaktif, ikonik, dan simbolik tetapi urutan tahapan berpikir atau perkembangan kognitif tersebut tidak dikaitkan dengan usia siswa, Bruner lebih menekankan bagaimana siswa mengeksplorasi potensi yang dimiliki; (5) Bruner mengembangkan model belajar penemuan atau discovery learning. Model pembelajaran discovery learning yang dikembangkan Bruner dengan tiga tahapan perkembangan kognitif siswa (enaktif, ikonik, dan simbolik) merupakan salah satu model pembelajaran yang diterapkan dalam kurikulum 2013 di Indonesia.
Education and training system post Covid-19: results from a probability model to measure students’ learning performance
Authors: Manna Rosalba , Calzone Samuele , Cinganotto Letizia
Published: January 2022

The Covid-19 affected people regardless of nationality, level of education, income or gender. However, students from privileged backgrounds, supported by their parents could find their way past closed school doors to alternative learning opportunities. This crisis has exposed the many inadequacies and inequalities in our education systems. This article presents the GPU System as a tool for collecting, managing and monitoring. The PON 2014/2020 For the School has been conceived for achieving an intelligent, equal, sustainable, and inclusive growth. In order to measure the learnings performance of students, a probability model was implemented to measure performance improvement. The data refer to the grades attributed to students before and after the delivery of the educational activities. Results show that the probability of registering a training success triggered by the training course is greater for the foreign languages area, generating inclusion and social integration mechanisms, as well as mediation and intercultural understanding.

 

Il sistema di istruzione e di formazione dopo il Covid-19: risultati da un modello per misurare gli apprendimenti degli studenti.

 

Il Covid-19 ha colpito tutti gli individui indipendentemente dalla nazionalità, dal livello di istruzione, dal reddito o dal genere. Tuttavia, gli studenti provenienti da ambienti privilegiati, supportati dai loro genitori hanno potuto intravedere più agevolmente la loro strada oltre le porte chiuse della scuola verso opportunità di apprendimento alternative. Questa crisi ha messo in luce le molte inadeguatezze e disuguaglianze nei nostri sistemi educativi. In questo studio si presenta il Sistema GPU come strumento di raccolta, gestione e monitoraggio. In tale contesto si inserisce il PON 2014/2020 Per la Scuola, concepito per realizzare una crescita intelligente, equa, sostenibile e inclusiva. Al fine di misurare le performance degli apprendimenti degli studenti è stato implementato un modello di probabilità finalizzato a misurare il successo formativo. I dati si riferiscono alle votazioni attribuite agli studenti prima e dopo l’azione formativa. I risultati mostrano come la probabilità di registrare un successo formativo generato dal percorso formativo intrapreso sia maggiore per l’area relativa alle lingue straniere, generando meccanismi di inclusione ed integrazione sociale, nonché la mediazione e la comprensione interculturale.
Progetto Aumentiamo la realtà con il QR-code
Authors: Guadalupi Francesca
Published: January 2022

With reference to art. 9 of our Constitution “The Republic promotes development and scientific and technical research. Protects the landscape and the historical and artistic heritage of the nation “and art. 6 “The Republic protects linguistic minorities with special rules”, the project “Let’s increase reality with the qr-code” wanted to enhance the school as a community open to the territory in which it operates and develop skills in the field of active and democratic citizenship. Two paths have been taken: researching historical sources to learn about the country’s past and experimenting with the use of a Quick Response Code to combine the past with the present and leave a trace in the future.
Privato, pubblico e aperto
Authors: Penge Stefano
Published: January 2022

In this text we try to clarify some misunderstandings that in our opinion have arisen on the issue of digital educational platforms. These misunderstandings are based on the one hand on the profound misconception of the meaning of “open”, which is reduced to “free”, and on the other hand on a conception of the company as an activity necessarily extraneous to the ethical dimension. Overcoming these misunderstandings could lead to a collaboration between private and public, between profit and non-profit that defines precisely the models and standards and lays the foundations for the construction of an ecosystem of open, inter-operating and ready-to-use platforms both on the software side and on the content side.
Adaptive market hypothesis: An empirical analysis of the Wine Market
Authors: S Kumar Anoop
Published: January 2022

We test the nature of weak form informational efficiency present in the wine market using daily return of LIV-EX 50 index from 1/1/2010 to 12/6/2020. First, we employ a number of statistical tests including variance ratio tests, tests for linear and non-linear dependence and Hurst coefficient. The tests are applied on the full dataset and on four non overlapping sub-samples of equal length. The variance ratio tests provide a mixed regarding informational efficiency. Evidence of non-linear dependence in the return series was found. The Hurst coefficient values confirm the presence of long run persistence in the wine market. Based on the mixed evidence, we test the possibility of adaptive nature of the wine market. We employ the newly proposed Adaptive Index (AI) to quantify the degree of information inefficiency in the wine market at any instance. Our results confirm that wine market is adaptive and periodically shifts between states of efficiency and inefficiency. The wine market is found to be relatively free from the Covid-19 induced shock and the safe haven property of wine is thus confirmed. Finally, impact of various macroeconomic and financial events on wine market efficiency is identified by using AI.
Simulando y resolviendo, la teoría voy comprendiendo: una estrategia didáctica para la enseñanza-aprendizaje de la física.
Authors: Duarte Julio Enrique , Niño Vega Jorge Armando , Fernández Morales Flavio Humberto
Published: January 2022

En esta investigación se reportan los hallazgos de un estudio que tuvo por objetivo determinar el nivel de impacto de una estrategia didáctica basada en simuladores, para la enseñanzaaprendizaje de conceptos de física mecánica, eléctrica, ondas y sonido, así como de calor y térmica. La investigación se ejecutó bajo un enfoque cuantitativo de tipo descriptivo, donde la población objeto de estudio correspondió a 23 estudiantes de ciclo V y VI, pertenecientes a una institución educativa colombiana regida por un sistema de educación por ciclos. Los resultados denotan que la implementación de una estrategia didáctica basada en simuladores, contribuye positivamente al aprendizaje de conceptos de física. Esto se comprobó a través del análisis estadístico realizado con los datos obtenidos en la prueba inicial, en donde tan solo aprobaron 6 estudiantes, mientras que en la prueba final solo reprobó un estudiante. Se concluye que la práctica con simuladores de fenómenos físicos, ayuda a afianzar los conocimientos que se adquieren en el área de física. Para ello, los centros educativos que no dispongan de espacios, recursos o materiales didácticos idóneos para la experimentación, pueden emplear las TIC como fuentes adecuadas de recursos educativos. No obstante, se debe tener en cuenta que la efectividad de los mismos depende de la estrategia didáctica que se emplee para la intervención pedagógica.
Influencia de la musica en el desarrollo de las competencias ciudadanas en el colegio bienvenido rodriguez de guamal.
Authors: Gómez Gutiérrez Rosa Beatriz , Guerra Muñoz Martha Esther , Rodríguez Núñez Yamira
Published: January 2022

El presente estudio tuvo como propósito identificar la percepción de los estudiantes frente a la influencia de la música en el comportamiento ciudadano, desde la convivencia y Paz, a partir de ella, se estudió resolución de conflictos, derechos humanos, regulación emocional y defensa del medio ambiente. Para este fin, se utilizó una metodología cualitativa a través de la fenomenología. Los participantes fueron estudiantes del grado noveno del colegio Bienvenido Rodríguez del municipio de Guamal -Magdalena. Para la recolección de la información se utilizó una entrevista semiestructurada de manera telefónica y virtual. Dentro de los hallazgos se evidenció que los estudiantes perciben que la música influye no solo en su comportamiento, sino en el estado de ánimo que les motiva a reflexionar y amplia los espacios para lograr una actitud positiva hacia la vida, expresada en resolver conflictos y respeto por la comunidad. Se concluye que la música es un instrumento social muy relevante, capaz de modificar el estado de ánimo y comportamiento de una persona, toda vez que se amplían los espacios de reflexión. Es así como se debe considerar a la música como un insumo en la construcción de estrategias pedagógicas que motivan la práctica de la convivencia, mediante el desarrollo de las competencias ciudadanas.
Análisis bibliométrico de la producción científica sobre covid-19 en latinoamérica.
Authors: Martelo Gómez Raúl José , Brito Carrillo Clara Judith , Franco Borré David Antonio
Published: January 2022

El objetivo de esta investigación fue caracterizar la producción científica de países latinoamericanos sobre COVID-19 al 12 de julio del 2021. En cuanto a la metodología, se realizó un estudio bibliométrico en la base de datos SCOPUS. Se incluyeron artículos originales y originales breves en los que consignaron países latinoamericanos. Se describió la producción científica según el número de documentos, país, institución de procedencia, área temática, revistas científicas en las que se publicaron, el financiamiento de las investigaciones, y las redes de colaboración. Respecto a los resultados se incluyeron 10,697 artículos, de los cuales el 63.1 fueron artículos de investigación. Brasil fue el país más prolífico en producir investigación sobre Covid-19. De las cinco primeras revistas con mayor producción, dos fueron extranjeras y de las instituciones con mayor producción científica, la gran mayoría pertenecen al sector educación, liderando la Universidad de Sao Pablo. Teniendo en cuenta lo anterior, se concluyó que la mayoría de las publicaciones provenían de Brasil, mientras que Haití tuvo la menor contribución. Los artículos de revistas se reconocen como el principal método de difusión del conocimiento y la mayoría de estos artículos se publican entre las revistas más prestigiosas de Latinoamérica.
Soil additives immobilising heavy metals in contaminated soils
Authors: Horak Othmar , Friesl-Hanl Wolfgang
Published: January 2022

Addition of iron oxides, lime, clay minerals and other substances can be used to decrease the plant availability of toxic heavy metals such as Pb, Zn, and Cd. Extractability and consequently plant concentrations may be reduced in some cases by more than 50%. The assessment of remediation processes is supported by biomonitoring methods in the field with Plantago lanceolata and in the greenhouse by barley test experiments, in combination with extraction by ammonium nitrate.