bluuebunny/crossref_metadata_2025 huggingface dataset:
Behavior Analytics, Sentiment Analysis, and Topic Detection of Danmaku from Online Electronics Courses on Bilibili
Authors:   the School of Information of Science and Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China, Zeng Linzhou , Tan Zhibang , Xia Lingling , Xiang Yu'an , Ke Yougang
Published: February 2023

Danmaku data from an online course contains implicit information about the students, the teacher, and the course itself. To discover the information, we design a behavior-sentiment-topic mining procedure, and apply it on the danmaku from two electronics courses on Bilibili, a popular video sharing platform in China. The procedure enables us to obtain behavior patterns, text sentiments, and hidden topics, of those danmaku comments effectively. Results show similarities and differences between the danmaku from Fundamentals of Analog Electronics and that from Fundamentals of Digital Electronics. Some interesting observations are given according to the results. For example, students tend to experience an emotional upsurge right before the end of a course, which is due to their fulfilment for completing the course. Based on the observations, we make some suggestions for students, teachers, and platforms on how to improve the learning outcomes using the results of danmaku analysis.
Valuation and Analysis of Online Teaching Platforms in Post-pandemic Era
Authors:   College of Mathematics and Systems Science, Guangdong Polytechnic Normal University, Guangzhou, China, Wang Yan , Nie Lijun , Jian Huawu
Published: February 2023

Based on the “Internet + education” concept of the deep integration of information technology and subject education, online flipped classes, MOOC classes and other information-based teaching came into being. This has driven the rapid development of a series of educational APPs and online teaching platforms. However, there are no perfect evaluation systems or evaluation methods to select the online teaching platforms. In view of this, from the perspective of students, this paper mainly extracted four primary indexes and nine secondary indexes by analyzing 1000 students’ survey questionnaires. Considering the similar functions of many platforms and each having its own emphasis, and students of different disciplines preferring the different convenient factors, we used the fuzzy comprehensive evaluation method to transform students’ qualitative evaluation into quantitative evaluation and designed a scientific and reasonable evaluation system for online platforms. Furthermore, we also filtered out the appropriate online platforms which are preferred by learners of different disciplines. That is, the liberal students prefer the platform of real-time interactive learning and live broadcast, while science students pay more attention to the platform with strong resource and strong feedback, and engineering students are more inclined to the platform with high convenience for teachers and students to share resources. To better carry out online-offline teaching activities in the future, we finally put forward some targeted suggestions according to the data analysis of each platform, so as to realize the intercommunication and sharing of high-quality resources.
Measuring Knowledge Transfer in Innovation Projects: A Comparative Analysis
Authors:   the Program of Systems and Computer Engineering, Universidade Federal do Rio de Janeiro, RJ 68511 Brazi, Neto Beatriz Helena , Souza Jano Moreira de , Oliveira Jonice
Published: February 2023

Collaboration of organizations with universities and research institutes is a way of decreasing not only the time but also the cost of R&D activities in innovation projects. This paper is a study on knowledge transfer measurement models in order to analyze their metrics and identify the use of techniques for measuring the flow of knowledge between companies, public research institutes, and universities in national innovation surveys. The comparative analysis of these models is part of a study to evaluate the ways to measure the impact of universities on society through innovation projects.
The Fostering Policies of the World-Class Advanced Manufacturing Industrial Innovation Ecosystem Based on Knowledge Advantage Perspective
Authors:   the Business School, Sichuan University, Chengdu, China, Zhang Yifan , Zhao Changyi
Published: February 2023

"Made in China 2025" clearly put forward the strategic goal of becoming a powerful manufacturing country, including the prospect of advanced manufacturing industry. Government policy support has played an increasingly important role in the fostering of advanced manufacturing clusters. Based on the two-dimensional analysis framework construction combined with the X-axis of policy tools and the Y-axis of knowledge advantage, we studied the fostering policies of the world-class advanced manufacturing industrial innovation ecosystem, especially focusing on the dynamic development process of knowledge production, and knowledge transformation, and knowledge application. Additionally, we also analyzed the trends in risk and knowledge advantage during the life cycle of the world-class advanced manufacturing industrial innovation ecosystems. We provide a fostering policy framework and believe that this study could provide references for the cultivation of a world-class advanced manufacturing industrial innovation ecosystem in China.
Belarusian Partisans in Soviet and Post-Soviet Cinema: the View of a Student Audience
Authors: Zernov Dmitrij
Published: February 2023

The article analyzes some changes in the image of the Belarusian partisans in the post-Soviet cinematography under the influence of the dominant attitude to aestheticization and nostalgic play on the Soviet heroic narrative. The narratives formed in Soviet and post-Soviet historiography are compared with the dominant strategies of representation in contemporary cinematography. The perception of these strategies by the audiences of young people is analyzed on the basis of the materials of ten focus groups. It is proved that post-Soviet films are characterized by the inconsistency between the conservative political message and the aesthetic or entertainment line aimed at the commercial exploitation of the viewer's emotions.
Wilforol A inhibits human glioma cell proliferation and deactivates the PI3K/AKT signaling pathway
Authors: Wang Zhihan , Ren Li , Xu Hao , Wei Zilong , Zeng Hongjun
Published: February 2023

Objectives: To study the anti-proliferation activity of wilforol A against glioma cells and its possible molecular mechanisms. Methods: Human glioma cell lines U118 MG and A172, human tracheal epithelial cells (TECs) and astrocytes (HAs) were exposed to various concentrations of wilforol A and evaluated for viability, apoptosis, and levels of proteins using WST-8 assay, flow cytometry and Western blot analysis, respectively. Results: Wilforol A inhibited the growth of U118 MG and A172 cells, but not TECs and HAs, in a concentration-dependent manner and the estimated IC50 were 6 to 11 μM after 4 h-exposure. Apoptosis was induced at an apoptotic rate of about 40% at 100 μM in U118 MG and A172 cells, but the rates were less than 3% in TECs and HAs. Co-exposure to caspase inhibitor Z-VAD-fmk significantly reduced wilforol A-induced apoptosis. Wilforol A treatment also reduced the colony formation ability of U118 MG cells and triggered a significant increase in ROS production. Elevated levels of pro-apoptotic proteins p53, Bax and cleaved caspase 3 and reduced level of the anti-apoptotic protein Bcl-2 were observed in glioma cells exposed to wilforol A. The expression of PI3K and p-Akt genes in the PI3K/AKT pathways were significantly downregulated in glioma cells treated with wilforol A. Conclusions: Wilforol A inhibits the growth of glioma cells, reduces the levels of proteins in the P13K/Akt signal transduction pathways and increases the levels of pro-apoptotic proteins.
Desempenho de Antenas de Microfita com Células Metamateriais Dentro do Substrato
Authors: Lima Adelson Menezes , Lima Náthalle Cavalcanti de Almeida , Silva Paulo César Linhares da
Published: February 2023

Neste trabalho, uma antena de microfita para operar na frequência de 5,8 GHz é proposta com arranjos de células metamateriais (MTMs) metálicos para melhorar o seu desempenho através de um aprimoramento dos campos. Para isso, um arranjo de células do tipo Capacitive Loaded Loop (CLL) é inserido dentro do substrato da antena, sendo distribuído em forma de uma matriz de 5 × 7 elementos ressoadores. O arranjo na antena foi proposto e analisado nas posições de 0º e 90º. Verificou-se que os elementos metamateriais ressoadores são responsáveis por um melhor desempenho das antenas em alguns parâmetros em relação a antena de microfita padrão, ou seja, houve um aumento da largura de banda em 21,43%, e um menor coeficiente de reflexão em 27,37% na posição 0º. Para posição de 90º houve somente um aumento na largura de banda de 19,24%. Além disso, foi possível observar que é possível trabalhar com frequências menores em função da larga faixa de frequências nas posições analisadas possibilitando uma redução no tamanho da antena de microfita padrão.
Hydrocephalus – a typical radiological symptom?
Authors: Marek Marta , Macionga Agata Aleksandra , Szopińska Kinga , Kluczewska Ewa
Published: February 2023

Wodogłowie może mieć wiele przyczyn. Zadaniem lekarza radiologa oprócz stwierdzenia poszerzenia układu komorowego na podstawie diagnostyki obrazowej jest próba określenia przyczyny takiego stanu. Autorki pragnęły przybliżyć kwestię powstawania płynu mózgowo-rdzeniowego (PMR) oraz zagadnienia związane z zaburzeniem krążenia PMR. Celem pracy było również przedstawienie aktualnej klasyfikacji wodogłowia w celu ułatwienia komunikacji pomiędzy lekarzami – radiologiem i neurologiem. Istotne jest zwrócenie uwagi radiologów na fakt, że wodogłowie nie jest jedynie objawem radiologicznym, ale może być związane z zaburzeniami obrazu klinicznego dotkniętych nim pacjentów.
Equitable Access and Public Attitudes to Vaccination for Internal Migrants in Vietnam
Authors:   Center for Creative Initiatives in Health and Population, Hoang Tu Anh , Oosterhoff Pauline ,   Institute of Development Studies, Le Lan Anh , Dinh Phuong Nga
Published: February 2023

This mixed methods participatory study explores equity and fairness in access to Vietnam’s Covid-19 vaccination programme, when the Covid-19 vaccine was scarce, with a focus on internal migrant workers. At the beginning of the pandemic large numbers of Vietnamese migrants from rural areas lost their jobs. Migrants are vital to the Vietnamese economy. Many factories that produce goods for export employ internal migrants. Before the pandemic, these workers faced inequalities of access to available health services and nutritious food. Although the Vietnamese state aspires to universal access to health, internal migrant workers living outside their village do not have long-term household book registration, which is the key to access many public services including health care and prevention. We found that migrant workers, especially those working in the export zones where factories produce for export, did have access to vaccination. However, there are intersectional inequalities between internal migrants based on other characteristics such as (dis)ability.
Upaya peningkatan pengelolaan tanah liat menjadi gerabah tradisional pada masa pandemi Covid-19 di Desa Pademawu Barat Kecamatan Pademawu Kabupaten Pamekasan
Authors: Farida Siti Nur , Wahyudi Kacung
Published: February 2023

West Pademawu Village is one of the villages whose people are pottery craftsmen. Pottery is a tool or craft made of clay through several processes ranging from manufacturing, drying, and finally burning. This pottery craft has existed since and is a relic of our ancestors so that the people of the West Pademawu village, especially the hamlet, and if it remains as a form of ancestral appreciation and a form of love and still maintains local products that are still traditional so that it is maintained and developed. Therefore, some communities produce pottery. One of the potteries is cobek (capah). The process of creating cobek is easy. Many crafts are made by the old and the young, so pottery creation in the village of West Pademawu, especially the Asampitu hamlet, exists and is well maintained. This activity is still hereditary, in which there is an instilled value ​​from the ancestors and sales turnover outside the city and even abroad and has become one of the mainstay products in the village of West Pademawu. During this covid-19 pandemic, all activities are limited even to earning difficult income, so people can take advantage of this pottery so that it can help the economy of the West Pademawu village community during the pandemic.(Desa Pademawu Barat adalah salah satu desa yang masyarakatnya merupakan pengrajin gerabah. Gerabah disini merupakan suatu pekakas atau kerajinan yang terbuat dari tanah liat yang dibuat melalui beberapa proses mulai dari pembuatan, pengeringan, dan terakhir adalah pembakaran. Kerajinan gerabah ini sudah ada sejak dahulu dan merupakan peninggalan nenek moyang kita, sehingga masyarakat Desa Pademawu Barat khususnya Dusun Asampitu masih melestarikannya sebagai bentuk penghargaan kepada nenek moyang kita dan sebagai wujud cinta serta tetap mempertahankan produk lokal yang masih bersifat tradisional agar tetap terjaga dan berkembang. Oleh karenanya beberapa masyarakat masih ada yang memproduksikan kerajinan gerabah, kerajinan yang dihasilkan salah satunya adalah cobek (capah), karena dilihat dari prosesnya sangat mudah sehingga banyak pengrajin gerabah yang membuatnya, baik dari kalangan tua sampai muda tetap melestarikannya sehingga gerabah di Desa Pademawu Barat khususnya Dusun Asampitu masih eksis dan tetap terjaga dengan baik dan masih bersifat turun temurun yang didalamnya terdapat penanaman nilai dari leluhur kita serta omset penjualannya pun sampai luar kota bahkan sampai luar negeri dan menjadi salah satu produk andalan di desa Pademawu Barat. Pada masa pandemi covid-19 ini yang semua aktivitas dibatasi bahkan untuk mendapatkan penghasilan sangatlah sulit dengan demikian masyarakat dapat memanfaatkan kerajinan gerabah ini sehingga dapat membantu perekonomian masyarakat Desa Pademawu Barat di masa pandemi).
Pengembangan gerakan Gubuk Literasi untuk meningkatkan minat baca tulis anak di desa Pademawu Timur Pamekasan Madura
Authors: Septiawati Yunita Sari Kharisma , Romadhon Sahrul
Published: February 2023

The Covid-19 pandemic outbreak has made children in the Pademawu Timur area play a lot, be lazy, and forget the purpose of learning from home. One of the activities that can develop reading and writing skills is village children's work. This article discusses the development of a village literacy movement to increase interest in reading and writing. This research was compiled based on data collected while the researcher was carrying out the KPM MDR (Kuliah Pengabdi Masyarakat Mandiri) program. One of the activities that the author does is holding literacy activities (Gubuk Literasi) which are carried out at a Village Hall located in the Malangan Hamlet area, Pademawu Timur Village, Pademawu District, Pamekasan Regency. This activity focuses more on writing and reading activities. To develop students' creativity in making scientific papers in the form of poetry, narration, and short stories. In addition to the work of village children, the profile of East Pademawu Village is also included which will be made into a book. With this village literacy activity, it is hoped that it can provide a platform for village children to consistently develop their creativity.(Wabah pandemi Covid-19 membuat anak-anak di wilayah Pademawu Timur banyak bermain-main, bermalas-malasan, dan lupa akan tujuan kegiatan belajar dari rumah. Salah satu kegiatan yang dapat mengembangkan kemampuan membaca dan menulis sebuah karya anak-anak desa. Artikel ini membahas mengenai pengembangan gerakan literasi desa untuk meningkatkan minat membaca dan menulis. Penelitian ini disusun berdasarkan data yang dikumpulkan selama peneliti melaksanakan program KPM MDR (Kuliah Pengabdi Masyarakat Mandiri). Salah satu kegiatan yang penulis lakukan adalah mengadakan kegiatan literasi (Gubuk Literasi) yang dilaksanakan di sebuah Balai Desa yang terletak dikawasan Dusun Malangan, Desa Pademawu Timur, Kecamatan Pademawu, Kabupaten Pamekasan. Pada kegiatan ini lebih berfokus pada kegiatan menulis dan membaca. Untuk mengembangkan kekreatifitasan siswa dalam membuat sebuah karya tulis ilmiah yang berupa Puisi, Narasi, dan Cerpen. Selain karya dari anak desa juga disertakan mengenai profil Desa Pademawu Timur yang akan dijadikan sebuah buku. Dengan adanya kegiatan literasi desa ini diharapkan dapat memberi wadah kepada anak-anak desa untuk selalu mengembangkan kekreatifitasan mereka).
Atrial septostomy to prevent pulmonary hypertension crisis in children with ventricular septal defect (VSD) and pulmonary hypertension (PH) underwent cardiac surgery: a case series
Authors: Aribowo Haryo , Arditya Yoga , Gabriela Gita Christy
Published: February 2023

Severe pulmonary hypertension (PH) was reported in 22.4% of ventricular septal defect (VSD) and it was mainly seen on a large VSD. Atrial septostomy (AS) could improve the hemodynamic condition and long-term survival of PH patients. Here, three VSD and PH cases in children who underwent AS surgery as their early treatment, concomitant with PH-specific pharmacological treatment were reported. Patient’s hemodynamic and general condition improved with no further complications during the follow-up period. Atrial septostomy was usually conducted after all PH-specific pharmacological interventions failed. However, a study found that the survival benefit of AS was significantly increased if it was conducted before PH-specific pharmacotherapies. Most of the patients in this case received immediate hemodynamic and functional improvement. In this case series, it was reported that the AS procedure could lower the pulmonary arterial pressure and be safely conducted without further complications or death >24 hr post-surgery. Considering the clinical benefit, safety procedure, and improved pulmonary arterial pressure, performing AS procedure concomitant with PH-specific pharmacotherapy as an early treatment for PH patients is recommended.
The difference in biofilms formations on duration less than 90 d and more than 90 d of tracheotomy cannula usage
Authors: Wicaksana Pradhana Fajar , Wulandari Dian Paramita , Kusuma Angga , Sastrowijoto Siswanto
Published: February 2023

Currently, prevention of local and systemic infections caused by implantable devices is increasingly improved. Tracheostomy is a surgical action followed by an implantable device called tracheotomy cannula into a trachea to maintain upper airway patenting. The incidence of biofilm-related complications and infections is associated with the length of duration of the attached tracheostomy. The formation and spread of biofilms from distal cannula increase the infection incidence in stoma, tracheitis, and even peripheral pneumonia. However, until now there has been no consensus on when the tracheostomy replacement supposedly conducted. Some manufacturers recommend that cannula replacement supposedly conducted within 30 d, but the data are not yet in agreement and need further study. This study aimed to determine the difference in biofilms formations in a duration of less than 90 d and more than 90 d of tracheotomy cannula usage. It was a cross-sectional study involving patients who underwent a tracheostomy at the Department of Otorhinolaryngology of Dr. Sardjito General Hospital, Yogyakarta. Fisher exact test was applied to analyze the biofilms formations of the two different duration of tracheostomy cannula usage. A total of 20 patients were involved in this study.  Durations of more than 90 d had more biofilms formations compared to less than 90 d, although it was not significantly different (p>0.05). However, the PR value of 6 indicated that subjects who have attached cannula more than 90 d clinically have 6 times higher risk for developing biofilms formations than those less than 90. In conclusion, there is no significant differences in biofilms formations between the less than 90 d and more than 90 d of tracheostomy cannula usage. However, clinically subjects with longer duration of tracheostomy cannula usage have higher risk for developing biofilms formations.
Mitigation and control of Defeating Jammers using P-1 Factorization
Authors:   ME-Communication Systems,Valliammai Engineering College,Potheri,Chennai 603203., Ms G Krithika , Ms K Kamala ,   Assistant Professor(OG),Dept of ECE,Valliammai EngineeringCollege,Potheri, Chennai 603203
Published: February 2023

Jamming-resistant broadcast communication is crucial for safety-critical applications such as emergency alert broadcasts or the dissemination of navigation signals in adversarial settings. These applications share the need for guaranteed authenticity and availability of messages which are broadcasted by base stations to a large and unknown number of (potentially untrusted) receivers. Common techniques to counter jamming attacks such as Direct-Sequence Spread Spectrum (DSSS) and Frequency Hopping are based on secrets that need to be shared between the sender and the receivers before the start of the communication. However, broadcast anti jamming communication that relies on Pollards Rho Method. In this work, we therefore propose a solution called P-Rho Method to enables spread-spectrum anti-jamming broadcast communication without the requirement of shared secrets. complete our work with an experimental evaluation on a prototype implementation.
Irrigation as a Crucial Tool for the Attainment of Sustainable Development Goals through Hunger and Poverty Alleviation in Ethiopia: A Review
Authors: Wendimu Adishiwot , Yoseph Tarekegn Yoseph , Ayalew Tewodros
Published: February 2023

Ethiopia has 74.3 million hectares of arable land and an irrigation potential of 3,088,395 hectares. Despite the country's vast irrigation potential, it hasn’t benefited much. A huge percentage of Ethiopia’s population is currently food insecure and a very significant portion lives under the national poverty line. Studies have confirmed the role of irrigation in alleviating poverty and promoting food security. Irrigation plays a huge role in poverty reduction, especially in developing countries like Ethiopia where agriculture is the backbone of the economy and the major source of employment. Irrigation does so by boosting farmer incomes, improving crop productivity, providing more employment and better pay rate, and contributing to the national GDP in the long run. Irrigation also promotes food security by contributing to all the dimensions including, food availability, access to food, food utilization, and stability. Given such importance of irrigation in poverty and hunger alleviation, it’s believed that the development of the sector massively contributes to the realization of sustainable development goals (SDG). Hence, this article voices the need for exploiting the huge irrigation potential and improving the irrigation sector, in order for the country to pull its population out of the misery of hunger and poverty.
Strong External Electric Fields Reduce Explosive Sensitivity. A Theoretical Investigation Into the Reaction Selectivity in NH2NO2···NH3
Authors: Ren Fude , Liu Yingzhe , Wang Xiao-lei , Qiu Lili , Meng Zihui , Cheng Xiang , Li Yong-xiang
Published: February 2023

Controlling the selectivity of detonation initiation reaction of explosive is a Holy Grail, and it seems to be an “idiot's daydream”, by strengthening external electric field, to reduce the explosive sensitivity. The effects of external electric fields on the initiation reactions in NH2NO2∙∙∙NH3, a model system of the nitroamine explosive with alkaline additive, were investigated at the MP2/6-311++G(2d,p) and CCSD/6-311++G(2d,p) level. The concerted effect in the intermolecular hydrogen exchange is characterized by an index of the imaginary vibrations. Due to the weakened concerted effects by the electric field along the −x-direction opposite to the “reaction axis”, the dominant reaction changes from the hydrogen exchange to 1,3-intramolecular hydrogen transference with the increase of the field strengths. Furthermore, the stronger the field strengths, the higher the barrier heights become, indicating the lower sensitivities. Therefore, by strengthening the field strength and adjusting the orientation between the field and “reaction axis”, not only can the reaction selectivity be controlled, but also the sensitivity can be reduced, in particular under a super-strong field. Thus, a traditional concept, which the explosive is dangerous under the super-strong external electric field, is broken theoretically. Compared to the neutral medium, the low sensitivity of the explosive with alkaline can be achieved under the stronger field. Employing atoms in molecules, reduced density gradient and surface electrostatic potentials, the origin of the reaction selectivity and sensitivity change is revealed. This work provides a new idea to the technical improvement for adding the external electric field into the explosive system.
COVID-19 and Vasa Vasorum: New Atherogenic Factor? A Case Report and Autopsy Findings
Authors: Makarova Julia , Malachova Sofia , Novitskaya Tatiana , Shapkina Valeria , Churilov Leonid
Published: February 2023

Patients with COVID-19 demonstrate higher rates of cardiovascular complications, including thromboses and thromboembolism. One may suppose that the action of SARS-CoV-2 transforms stable atherosclerotic plaques into unstable status. Cardiovascular complications in COVID-19 may be caused by progressive viral alteration the blood vessels, including vasa vasorum. A lethal case of ischemic brain disease caused by cerebral atherosclerosis and exacerbated with a stroke during COVID-19 infection is briefly described. The results of autopsy showed perivascular lymphocytic infiltration and signs of vasa vasorum vasculitis with thrombi of adventitial microvasculature. The data discussed in the article are interpreted in context of the concept giving the important role in atherogenesis to vasa vasorum.
Wetland Contracts As Sustainable Governance Tools: A Com-Parison Between the Output of the Interreg Project CREW “Co-Ordinated Wetland Management in Italy-Croatia Cross Border Region”
Authors: Cantaluppi Maria Giulia , De Marchi Marta , Pace* Michela , Tosi Maria Chiara
Published: February 2023

Wetlands are complex ecosystems, considered among the most productive environments of the world. They contain major biodiversity hotspots, providing the resources upon which countless species of plants and animals depend and they perform important environmental and economic functions. Wetlands reduce flooding events, improve water quality and represent a valuable cultural and natural heritage. It is estimated that 2/3 of Europe wetlands have disappeared since the beginning of the 20th Century, mainly lost through development processes which did not take their functions and values adequately into account. The European Directive (2000/60/EC) re-quires to foster an integrated approach for wetland management through collaborative governance processes. The Wetland Contract is a tool that has been developed and implemented to set the ground for voluntary-based commitments for the sustainable governance of water systems. Among the Mediterranean countries, Italy and Croatia count on a rich variety of coastal wetlands that, together with the plants and animals inhabiting and crossing them, constitute an extremely precious natural heritage. The aim of this paper is to present and discuss, whit a critical approach, the output of the Interreg Project CREW that, between 2018-21, contributed to the drafting of seven new Wetland Contracts.
УЧЁТ ВЛИЯНИЯ РЕЛЬЕФА КОСМИЧЕСКОГО ТЕЛА ПРИ МОДЕЛИРОВАНИИ РАДИОЛОКАЦИОННЫХ ЭКСПЕРИМЕНТОВ
Authors:   ФИРЭ им. В. А. Котельникова РАН, Рудаменко Роман , Юшков Вячеслав , Юшкова Ольга
Published: February 2023

Предложена концепция моделирования отражённого радиосигнала радара космического базирования от неровной поверхности космического тела. При численных расчётах в качестве рельефа использовалась 3-D-цифровая модель поверхности. Показано, что результаты моделирования согласуются с экспериментальными данными и теоретическими оценками. Работа выполнена в рамках научной поддержки радиолокационных экспериментов, проведение которых планируется в миссии «Луна-26».
LOWER-HYBRID WAVES IN THE EXOSPHERE OF THE MOON
Authors:   МФТИ, Kassem Attia Ibrahem , Popel Sergey ,   ИКИ РАН, Izvekova Yulya , Zelenyi Lev
Published: February 2023

A description is given of the wave processes in the interaction of the tail of the Earth's magnetosphere with the dusty exosphere of the Moon. The significance of the lower-hybrid waves appears in this case. It is found that the development of linear hydrodynamic instability leads to the excitation of the lower-hybrid waves. Furthermore, the development of the instability is due to the relative motion of magnetosphere ions and charged dust particles. The processes of development of lower-hybrid turbulence, which is considered from the standpoint of strong turbulence, are investigated. Based on wave-ion interaction, the effective collision frequency which characterizes the anomalous loss of ion momentum is determined. Moreover, the electric fields which arise in the region of interaction of the dusty plasma near the Moon and the Earth's magnetosphere are evaluated. The excitation of the electric fields produced due to the development of lower-hybrid turbulence is thought to play a significant role from the viewpoint of the electric field pattern at the Moon. The effects of lower-hybrid turbulence in the near-surface lunar dusty plasma should be taken into account when interpreting the observational data.
АНАЛИЗ ГРАВИТАЦИОННЫХ АНОМАЛИЙ И ВЫСОТ ГЕОИДА ВЕНЕРЫ
Authors:   МГУ, Менщикова Тамара
Published: February 2023

В работе использованы данные о топографии и гравитационном поле Венеры, полученные космическим аппаратом «Магеллан». На основании этих данных и использовании равновесной фигуры Венеры в качестве её референсной поверхности построены карты изолиний высот геоида и гравитационных аномалий планеты. Анализ полученных результатов показал, что большинство гравитационных аномалий и высот геоида сильно коррелируют с рельефом поверхности.
Ganglion Cyst Resection of the Anterior Cruciate Ligament using the Posterior Trans-Septal Approach
Authors: Han Changhun , Shinkuma Takafumi , Shinkuma Takafumi , Takei Satoshi , Oki Takeshi
Published: February 2023

Case:

We present 2 patients each with an intra-articular ganglion cyst arising at the femoral attachment of the anterior cruciate ligament that was successfully resected using the posterior trans-septal portal approach. At the final follow-up, the patients had no recurrence of symptoms and no recurrence of the ganglion cyst on magnetic resonance imaging.

Conclusion:

Surgeons should consider the trans-septal portal approach when they cannot visually confirm the intra-articular ganglion cyst by the arthroscopic anterior approach. The trans-septal portal approach enabled complete visualization of the ganglion cyst located in the posterior compartment of the knee.
Redução de custos hospitalares após implementação de ferramentas informatizadas na logística de um serviço de farmácia hospitalar
Authors: Rodrigues Cássio , Paiva Vaneska
Published: February 2023

A farmácia hospitalar é atualmente uma unidade hospitalar que tem, entre outros objetivos, garantir o uso seguro e racional dos medicamentos e atender às demandas dos pacientes hospitalizados; para tanto, deve possuir um sistema eficiente de informações e dispor de um sistema de controle e acompanhamento de custos. As diversas inovações tecnológicas na informação e controle de dados aplicados aos serviços de saúde trazem agilidade no processo, maior segurança para os pacientes e melhor gerenciamento no processo logístico, reduzindo custos como aqueles associados à expiração da validade de produtos. Nessa perspectiva de análise de custo, o presente trabalho avalia os impactos que um processo de informatização da rastreabilidade e o uso de ferramentas informatizadas proporcionaram a um serviço de farmácia hospitalar, com o objetivo de descrever os impactos financeiros após a implementação dessas ferramentas. Realizamos um estudo observacional, longitudinal e retrospectivo a partir de dados financeiros relacionados a perdas por expiração de validade de medicamentos e produtos para a saúde e de compras emergenciais desses insumos em um período de seis anos. Os dados foram coletados em dezembro de 2021 referentes aos anos de 2015 a 2020 a partir de relatórios extraídos do Smart (Pixeon). Observamos que os custos com perdas por expiração de validade dos produtos para a saúde caíram substancialmente em 2019, com o menor custo em 2020, correspondendo a uma redução média de 47,9% nesses dois últimos anos em relação à média dos quatro anos anteriores. Também houve redução média de 70% nos custos com compras emergenciais ao longo desse período. Assim, quando avaliamos esses resultados, percebe-se que a informatização da rastreabilidade e o uso de ferramentas informatizadas para suporte no processo de trabalho logístico permitem contribuir significativamente para reduzir custos hospitalares.
A Hybrid Embedded Discrete Fracture Model and Dual-Porosity, Dual-Permeability Workflow for Hierarchical Treatment of Fractures in Practical Field Studies
Authors: Hui Mun-Hong , Mallison Bradley , Thomas Sunil , Muron Pierre , Rousset Matthieu , Earnest Evan , Playton Ted , Vo Hai , Jensen Clair
Published: February 2023

Natural fracture systems comprise numerous small features and relatively few large ones. At field scale, it is impractical to treat all fractures explicitly. We represent the largest fractures using an embedded discrete fracture model (EDFM) and account for smaller ones using a dual-porosity, dual-permeability (DPDK) idealized representation of the fracture network. The hybrid EDFM + DPDK approach uses consistent discretization schemes and efficiently simulates realistic field cases. Further speedup can be obtained using aggregation-based upscaling. Capabilities to visualize and post-process simulation results facilitate understanding for effective management of fractured reservoirs. The proposed approach embeds large discrete fractures as EDFM within a DPDK grid (which contains both matrix and idealized fracture continua for smaller fractures) and captures all connections among the triple media. In contrast with existing EDFM formulations, we account for discrete fracture spacing within each matrix cell via a new matrix-fracture transfer term and use consistent assumptions for classical EDFM and DPDK calculations. In addition, the workflow enables coarse EDFM representations using flow-based cell-aggregation upscaling for computational efficiency. Using a synthetic case, we show that the proposed EDFM + DPDK approach provides a close match of simulation results from a reference model that represents all fractures explicitly, while providing runtime speedup. It is also more accurate than previous standard EDFM and DPDK models. We demonstrate that the matrix-fracture transfer function agrees with flow-based upscaling of high-resolution fracture models. Next, the automated workflow is applied to a waterflooding study for a giant carbonate reservoir, with an ensemble of stochastic fracture realizations. The overall workflow provides the computational efficiency needed for performance forecasts in practical field studies, and the 3D visualization allows for the derivation of insights into recovery mechanisms. Finally, we apply a finite-volume tracer-based flux post-processing scheme on simulation results to analyze production allocation and sweep for understanding expected waterflood performance.
In-Situ Visualization of Imbibition Process Using a Fracture-Matrix Micromodel: Effect of Surfactant Formulations toward Nanoemulsion and Microemulsion
Authors: Wei Bing , Li Qinzhi , Yang Weipeng , Wang Yiwen , Lu Jun , Tang Jinyu
Published: February 2023

Spontaneous imbibition can help to improve the oil recovery of unconventional reservoirs owing to the significant capillarity. Although the dependence of imbibition dynamics of surfactants on wettability and interfacial tension (IFT) is understood, the mechanisms of nanoemulsion and microemulsion forming surfactants for higher imbibition recovery are not as clear. Herein, we conducted a series of imbibition experiments on a visual fracture-matrix micromodel, aiming to directly observe the imbibition processes of these surfactant formulations. Four surfactant-based fluids, including a common surfactant [fatty alcohol polyoxyethylene ether, sodium sulfate (AES)], a surfactant composition of nanoemulsion (nE-S), an ex-situ nanoemulsion (nE), and a situ microemulsion forming surfactant (mE-FS), were designed and used in this work for comparison with brine.

The results suggested that AES, nE-S, nE, and mE-FS could substantially stimulate the imbibition invasion, and mE-FS generated the greatest imbibition depth and sweeping area followed by nE. The imbibition dynamics were governed by the interfacial interactions among oil, aqueous phase, and solid surface, leading to different imbibition patterns for these five fluids. AES and nE-S could reduce the oil-aqueous IFT to 10−1 mN/m and alter the wettability to a weak water-wet state as a result of surfactant adsorption, leading to a slightly higher imbibition invasion compared with brine. AES imbibition produced large oil droplets mainly because of the snap-off effect at the nozzle to the fracture, whereas nE-S produced smaller oil droplets due to the weak in-situ emulsification. nE as a formed nanoemulsion with an internal oil phase demonstrated a lower IFT of 10−2 mN/m and superior capacity in changing surface wettability mainly through the adsorption and spreading of nanosized oil droplets on the surface. The oil phase was heavily emulsified forming dense droplets on the oil-aqueous interface. mE-FS readily formed Winsor Type III microemulsion and produced an IFT of 10−3 mN/m magnitude. The wettability was changed mainly because of the peeling oil film and formation of microemulsion on the surface induced by solubilization. The dynamic increase of the oil-aqueous IFT at the imbibition front caused by the adsorption loss of surfactant to the surface and partitioning to the oil phase promoted capillary-driven imbibition for nE and mE-FS. We modified an imbibition model to incorporate the solubilization effect, leading to a much better fitting with the experimental data.
Empirical analysis of impact of weather and air pollution parameters on COVID-19 spread and control in India using Machine Learning Algorithm
Authors: Shrivastav Lokesh Kumar , KUMAR RAVINDER
Published: February 2023

The COVID-19 has affected and threatened the world health system very critically throughout the globe. In order to take preventive actions by the agencies in dealing with such a pandemic situation, it becomes very necessary to develop a system to analyze the impact of environmental parameters on the spread of this virus. Machine learning algorithms and artificial Intelligence may play an important role in the detection and analysis of the spread of COVID-19. This paper proposed a twinned gradient boosting machine (GBM) to analyze the impact of environmental parameters on the spread, recovery, and mortality rate of this virus in India. The proposed paper exploited the four weather parameters (temperature, humidity, atmospheric pressure, and wind speed) and two air pollution parameters (PM2.5 and PM10) as input to predict the infection, recovery, and mortality rate of its spread. The algorithm of the GBM model has been optimized in its four distributions for best performance by tuning its parameters. The performance of the GBM is reported as excellent (where R2 = 0.99) in training for the combined dataset comprises all three outcomes i.e. infection, recovery and mortality rates. The proposed approach achieved the best prediction results for the state, which is worst affected and highest variation in the atmospheric factors and air pollution level.
An open protocol for modeling T Cell Clonotype repertoires using TCRβ CDR3 sequences
Authors: Gurun Burcu , Horton Wesley , Murugan Dhaarini , Zhu Biqing , Leyshock Patrick , Kumar Sushil , Byrne Katelyn T. , Vonderheide Robert H. , Margolin Adam A. , Mori Motomi , Spellman Paul T. , Coussens Lisa M. , Speed Terence P.
Published: February 2023

T cell receptor repertoires can be profiled using next generation sequencing (NGS) to measure and monitor adaptive dynamical changes in response to disease and other perturbations. Genomic DNA-based bulk sequencing is cost-effective but necessitates multiplex target amplification using multiple primer pairs with highly variable amplification efficiencies. Here, we utilize an equimolar primer mixture and propose a single statistical normalization step that efficiently corrects for amplification bias post sequencing. Using samples analyzed by both our open protocol and a commercial solution, we show high concordance between bulk clonality metrics. This approach is an inexpensive and open-source alternative to commercial solutions.
Hemorrhoidal Disease among doctors from Grade-A Tertiary Hospitals in Big Cities of China: results from web-based doctors as patients survey
Authors: Qiu Xiaoyuan , Liu Yuxin , Shi Weikun , Lin Guole
Published: February 2023

Background: Doctors are at high risk of developing hemorrhoidal disease (HD), but it’s still not clear that how much doctors aware of this problem. OASIS (dOctors AS patIentS) study was conducted to understand the prevalence, awareness, diagnosis and treatment of HD among doctors in big cities of China.
Methods: From August to October in 2020, an online survey was conducted through questionnaire among doctors from grade-A tertiary hospitals in 29 provinces across China.
Results: A total of 1227 questionnaires were collected. The prevalence of HD was 56.8%, with a significant difference between internists and surgeons (P=0.01). 15.6% doctors with HD did not know well about the chronic nature of HD. 91.5% of doctors adopted general treatment, and 83.0% doctors considered that “oral medications are used only after ineffective topical medications”. Among the oral medications, the Micronized Purified Flavonoid Fraction (MPFF) performed best on the scores of the three most valuable aspects, but only 17% doctors had received treatment with MPFF.
Conclusions: Doctors are at higher risk of developing HD, and HD is highly prevalent among Chinese doctors, but the awareness of that is not enough. There is a gap between the HD clinical practice and guideline recommendations even in doctors, such as late initiation of oral drug therapy and inadequate oral drug therapy. Therefore, awareness and standardized treatment of HD should be strengthened among Chinese doctors, and what’s more, ordinary people.
Digital Cognitive Tests for Dementia Screening: A Systematic Review
Authors: Amanzadeh Masoud , Hamedan Mahnaz , Mahdavi Abdollah , Mohammadnia Alireza
Published: February 2023

Background: The number of people with dementia is increasing dramatically. With the outbreak of the COVID-19 pandemic, use of digital screening tests can play a significant role in the remote and timely detection of people with dementia. The aim of this study is to review digital cognitive tests for dementia screening.
Methods: We searched Web of Science, ProQuest, PubMed, Scopus and Cochrane in June, 2022. 1348 articles were identified. After reviewing the articles and excluding duplicates and irrelevant articles, thirty-two articles met our inclusion criteria.
Results: The studies were classified into 3 groups as follows: 1) mobile-based screening tests 2) desktop-based screening tests 3) web-based screening tests.
Conclusion: The use of digital cognitive tests, especially mobile-based screening tests, facilitates timely diagnosis of dementia. Development of AI-based screening tests and use of technologies such as virtual reality and chatbots will set a bright future in early detection of dementia.
Risk Factors of Post Discharge Falls in Patients Undergoing Total Knee Arthroplasty
Authors: Sadiq Samreen , noor Rabiya , Bashir Salman , Akram Rizwan , Asim Hafiz
Published: February 2023

Background:
Falls are commonly reported among patients after total knee replacement. Previous literature and reviews have largely focused on the risk factors for fall among population undergoing total knee replacement. However, no systematic review has identified specific risk factors among female population undergoing the procedure regarding post discharge falls. Thus, the current review aimed to identify and provide summary of the key risk factors in women with total knee replacement about post discharge falls.
Main Body:
To identify the current evidence on risk factors among patients undergoing total knee replacement for after-discharge falls. Systematic review was conducted and data bases were searched including Cochrane, Medline, PEDro from 2000 to latest. A thorough search was performed to retrieve articles missed through databases as well as unpublished grey literature. Methodological quality assessment was performed using Nottawa Castle Scale for Case Control and Cohort studies and AXIS tool for cross sectional study. 10 articles finally met the inclusion criteria and were included in the review based on eligibility. There were 6 Cohort studies, 1 Cohort study protocol, 2 Case Control and 1 cross sectional, 3 randomized pilot studies and 1 prospective cohort study.
Conclusion(s):
Patients who underwent total knee replacement are at risk of post discharge falls. Advancing age, reduced proprioception, psychiatric disorders, living alone and operated knee pain were considered to be important risk factors for post discharge falls.
Improved Segmentation With Optimization Based Multilevel Thresholding and K-Means Clustering for Plant Disease Identification
Authors: David Beulah , R Gomathi
Published: February 2023

Plant disease identification is an important application for plant protection in agriculture production. The early detection of crop disease helps to reduce the effect of disease in cultivation. The detection of disease should be done precisely. Hence the hyperspectral sensors are extensively used in plant disease detection. Artificial intelligence and machine learning-based techniques have been presented in many works for plant disease detection. Deep learning is the latest method used in image processing and pattern recognition with improved accuracy. For plant disease detection, accurate classification of disease can be obtained with the utilization of deep learning techniques. In this paper, adaptive extreme learning machine (AELT) is presented for classifying the disease. Before the classification process, the segmentation and feature extraction process is performed to improve the disease detection accuracy. Multilevel thresholding-based K-means clustering with probability-induced butterfly optimization algorithm is presented for segmentation. The entropy-based features are extracted from plant images. The features are applied to the AELT classifier. The results are evaluated with the standard dataset and compared with the state of art techniques.