bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamic Analysis of the Symbiotic Model of Commensalism and Parasitism with Harvesting in Commensal Populations
Authors: Puspitasari Nurmaini , Kusumawinahyu Wuryansari Muharini , Trisilowati Trisilowati
Published: April 2021

This article discussed about a dynamic analysis of the symbiotic model of commensalism and parasitism with harvesting in the commensal population. This model is obtained from a modification of the symbiosis commensalism model. This modification is by adding a new population, namely the parasite population. Furthermore, it will be investigated that the three populations can coexist. The analysis carried out includes the determination of all equilibrium points along with their existence and local stability along with their stability requirements. From this model, it is obtained eight equilibrium points, namely three population extinction points, two population extinction points, one population extinction point and three extinction points can coexist. Of the eight points, only two points are asymptotically stable if they meet certain conditions. Next, a numerical simulation will be performed to illustrate the model’s behavior. In this article, a numerical simulation was carried out using the RK-4 method. The simulation results obtained support the results of the dynamic analysis that has been done previously.This article discussed about a dynamic analysis of the symbiotic model of The dynamics of the symbiotic model of commensalism and parasitism with harvesting in the commensal population. is the main focus of this study. This model is obtained from a modification of the symbiosis commensalism model. This modification is by adding a new population, namely the parasite population. Furthermore, it will be investigated that the three populations can coexist. The analysis carried out includes the determination begins by identifying the conditions for the existence of all equilibrium points along with their existence and local stability along with their stability requirements. From this model, it is obtained eight equilibrium points, namely three population extinction points, two population extinction points, one population extinction point and three extinction points can coexist. Of the eight points, only two points are asymptotically stable if they meet certain conditions. Next, a numerical simulation will be performed to illustrate the model’s behavior. In this article, a numerical simulation was carried out using the RK-4 method. The simulation results obtained support the results of the dynamic analysis that has been done previously.[VM1]  [VM1]To add a mathematical effect to the article. There can be added mathematical models produced in the study at the end of this section.
Implementasi Kegiatan Menggambar Bebas untuk Meningkatkan Perkembangan Seni Anak Pada Taman Kanak-kanak Negeri Pembina Sungai Raya Kabupaten Kubu Raya
Authors: Usnah
Published: April 2021

Tujuan penelitian dari implementasi kegiatan menggambar bebas adalah menumbuhkan kemampuan perkembangan seni siswa kelompok B pada Taman Kanak-kanak Negeri Pembina Sungai Raya Kabupaten Kubu Raya. Penelitian ini menggunakan metode penelitian tindakan yang terdiri dari 2 siklus dengan melibatkan 15 orang anak. Siklus pada penelitian ini berupa perencanaan, tindakan, pengamatan, dan refleksi. Sebelumnya, peneliti melakukan penelitian pratindakan untuk mengetahui kemampuan awal perkembangan seni anak pada aktivitas menggambar bebas. pada riset ini, dipaparkan bahwa perkembangan seni siswa kelompok B sangat meningkat, dengan ini hasilnya dapat dilihat dari nlai akhir penelitian pada siklusI dan siklusII. Diperoleh data pada siklusI terdapat 8 orang anak (53,33% ) dapat menggambar bebas dengan baik, dan 7 orang anak (46,67%) belum bias menggambar bebas dengan baik. Pada siklus II diperoleh data 13 orang anak (86,67%) dapat menggambar bebas dengan baik dan 2 orang anak (13,33%) belum bisa menggambar dengan baik.
D. S. MEREZHKOVSKY AS A STUDENT OF THE THIRD GYMNASIUM (COMMENTATOR’S NOTES). Part 1
Authors:   Institute of Russian Literature (Pushkinskij Dom) Russian Academy of Sciences, Kumpan K.A.
Published: April 2021

The article introduces the academic community to a vast collection of the unknown documents from the archives of the Third Gymnasium (Classical School) and from Merezhkovsky’s personal foundation, which contains the experiments of his early years. As the result, a picture emerges that depicts the school routine, featuring the portraits of the professors and the analysis of humanitarian subjects. Besides, a detailed commentary on the «Gymnasium» fragments of the autobiographical poem The Ancient Octaves is offered, and conclusions are drawn regarding the reliability of the assessments of education contained in it.
«THE MAKINGS OF POETRY»: V. V. MAYAKOVSKY’S SVERDLOVSK NOTEBOOK Part 2
Authors:   National Research University Higher School of Economics in Moscow, Khachaturian L.V. ,   Institute of Russian Literature (Pushkinskij Dom) Russian Academy of Sciences
Published: April 2021

The article analyzes the approach of V. V. Mayakovsky to writing notebooks. Notebook № 55 (Sverdlovsk) is published for the fi rst time. The article examines draft versions and revisions of the poems Paris Commune, The Story of the Foundry Worker Ivan Kozyrev about Moving into a New Apartment, The Face of the Class Enemy, Two Cultures, etc.
«THE THEME OF THE CIVIL WAR CANNOT BE MOVED TO THE ARCHIVES»: CONCERNING THE ATTITUDE OF LARAN (LBB) TO MAXIM GORKIJ’S PUBLISHING PROJECT
Authors:   Institute of Russian Literature (Pushkinskij Dom) Russian Academy of Sciences, Sysoeva A.V.
Published: April 2021

The article deals with the interactions between the Literary Association of the Red Army and Navy (Leningrad Baltic Branch) and Gorkij’s publishing project «History of the Civil War»: the critics and the heads of the branch encouraged its other members to support the project, but moved no further to achieve a result. The situation seemed to have emerged from their predominant interest in exploring the theme of the modern army and navy.
CONCERNING THE ARCHAEOGRAPHIC PURSUITS OF A. I. TURGENEV (BIOGRAPHICAL DATA) PART 1
Authors:   Institute of Russian Literature (Pushkinskij Dom) Russian Academy of Sciences, Khokhlova N.A.
Published: April 2021

A. I. Turgenev’s archaeographic efforts have been investigated from the point of view of their substance, as well as in biographical terms, the research covering the period from the emergence of his historical interests (the University of Göttingen) to the publication of the so-called Acts of Turgenev. The article is based on the data from the archives of the Turgenev brothers (IRLI. F. 309), including the unexplored body of correspondence between A. I. Turgenev and Prince A. N. Golitsyn.
Domestic realities of reinsurance
Authors: Kucherivska Sofiia , Hladchuk Olha
Published: April 2021

Reinsurance is a guarantor and catalyst for the development of the insurance market, it increases its capacity and financial security. The aim of the article is to study the current trends of reinsurance in Ukraine, identify the main problems in their implementation and formulate appropriate areas for their solution. The works of domestic and foreign scientists in the field of reinsurance have become a theoretical and informational basis for writing the article. This study was conducted by implementing methods of analysis and synthesis, theoretical generalization, comparative analysis, statistical and graphical methods. There is no single approach among Ukrainian reinsurance researchers regarding the use of basic reinsurance terms. It is important to use the correct reinsurance terminology, which is clearly defined in Ukrainian legislation, distinguishing between the concepts of "actions of the primary reinsurer" and "actions of the reinsurer" in reinsurance. At present, domestic insurers mostly reinsure their risks in "parent companies" or foreign reinsurers, paying almost a third of the reinsurance premiums involved. Ukrainian reinsurance is characterized by the fact that reinsurance premiums are paid mainly to resident reinsurers, while the majority of insurance payments are made by non-resident reinsurers. Domestic insurers are reinsuring the risks of primary non-resident insurers, but this activity is not yet so successful. A potential direction for the further development of reinsurance in Ukraine is the creation by the state, or with its participation, of a national reinsurance company or a Ukrainian reinsurance pool using modern financial products and technological innovations. As a result of the transfer of powers to supervise the activities of insurers to the NBU, we can expect effective changes in the legislative provision of insurance and reinsurance activities based on world experience, implementation of Solvency II and improving the quality of insurance and reinsurance activities by insurance market participants
ON THE DISCOVERY OF THE "LAW OF PRESERVATION AND DEVELOPMENT OF ETHNOS BY MEANS OF SAVING HARMONY ON A TRUE SPIRITUAL BASIS"
Authors: Baimuratov Uraz
Published: April 2021

The article highlights the scientific discovery of the author. In this case, the category of the duality of the world "Harmony-disharmony" is used, which is both spiritual and material at the same time. Spiritually oriented worldview is given special attention. The purpose of a person's life in our earthly life is set by our Creator and consists in successfully passing the tests for confession in earthly life. This allows a person to hope for eternal life in paradise. The concept of Harmony has tremendous methodological significance for humanities. A comparative analysis of two forms of life of individuals and societies is given. The role of saving Harmony, its laws is stated, including the newly discovered one. Harmony means an essential connection, dimensionality, conformity, unity of various spheres of society, without fail on the basis of true spirituality and morality. The paradigm of Harmony is a systemic combination of demoethics "D" as the main sphere with three other spheres of society (demography "D", democracy "D" and demoeconomics "D") according to the formula "D + 3D". The absence or lagging behind of one of these spheres means disharmony, lack of spirituality and immorality are especially pernicious. In Harmony, there is an economic Law of dominant elevation of true spiritual needs over reasonable material and non-material needs and desires of individuals.
ON THE PROBLEM OF SUBJECTIVITY (AGENCY) OF CONSUMPTION OF EDUCATIONAL SERVICES
Authors: Posypanova O. S. , Krasnoshchechenko I. P. , Arpentieva M. R. , Kassymova G. K. , Pogodina I. V. , Bogach M. A. , Varlakova Yu. R.
Published: April 2021

Many researchers agree that the main activity of the university is the provision of educational services. But they do not give an unambiguous definition in what form the service exists, what is meant by the product or product of the university, as well as how the concepts of "educational service" and "quality of education" are related and also practically do not ask the question of what role the subjectivity of the consumer plays (students, etc.) in the consumption of these services. On the one hand, it is obvious that the problem of consumption of educational services is largely a problem of the quality and price of education: the quality of educational services and prices for educational services. Experts who talk about the development of a person's creative and predictive abilities in relation to the ethical component in the changing educational and social conditions believe that at present, especially, more and more new requirements are imposed on the quality of education. Taking into account the constant variability of the social environment, the very concept of "quality of education" in the future will constantly transform. On the other hand, the problem of formulating the concept of "educational services" has not yet been resolved. In general, an educational service is a complex process aimed at transferring knowledge and skills (competencies) of a general educational, professional nature to the consumer in order to satisfy and develop personal, group and social needs. The quality of educational services changes due to changes in the qualifications of personnel, material and technical base and other elements inherent in the educational process, as well as the quality of students, including their learning ability and other characteristics. The purpose of the study is to analyze the problems of subjectivity in the context of the consumption of educational services.
METHODS OF TEACHING COMPUTER SCIENCE AT THE UNIVERSITY
Authors: Kypshakbayeva A. K. , Bissenbayeva Zh. N. , Tukhmarova Sh.
Published: April 2021

This article discusses the definition of teaching methods as a science, its object and subject, and features. The main components of the connection between the methodology of teaching computer science as a science and the main concepts of the educational process are also identified. The main focus is on generalizing the experience of teaching the discipline "Informatics" to students of humanitarian universities and highlighting interdisciplinary connections. The purpose of the article is to describe the intermediate results obtained during the study of the effective use of information technologies in the course of teaching students of a humanitarian university in the discipline "Informatics". The structure of the e-course in the self-study support system is presented. The place of the discipline "Informatics" in the training programs of students of the 1st year of the bachelor's degree in the areas of "Economics" is highlighted, the types of tasks for independent work of students are described, and an example of the design of educational materials for the case in the discipline "Informatics" is given. The main directions of improving the methodology of teaching the discipline "Informatics" are also outlined.
MINT-Projekte für Schülerinnen an Hochschulen. Analyse des Wirkungsmechanismus und Meta-Evaluation der empirischen Evidenz
Authors: Brenning Stefanie , Wolf Elke
Published: April 2021

An deutschen Hochschulen für angewandte Wissenschaften existieren zahlreiche Angebote, um Schülerinnen für Studiengänge und Berufe im MINT-Bereich zu begeistern. Wissenschaftlich gesicherte Erkenntnisse über deren Wirksamkeit fehlen jedoch weitgehend. Ausgehend vom aktuellen Forschungsstand entwickeln wir eine mehrstufige Wirkungslogik dieser Maßnahmen und analysieren anschließend die Methodik der uns vorliegenden 13 Evaluationen mithilfe einer Meta-Evaluation. Die Befunde zeigen, dass diese Evaluationen von MINT-Projekten nur sehr eingeschränkt der Erfolgsmessung dienen, da sich die schriftlichen Fragebögen größtenteils auf kurzfristige Erfolgsindikatoren beschränken und die Untersuchungsdesigns nicht den Ansprüchen einer Kausalanalyse genügen.
Cross-issue correlation based opinion prediction in cyber argumentation
Authors: Rahman Md Mahfuzer , Liu Xiaoqing “Frank” , Sirrianni Joseph W. , Adams Douglas
Published: April 2021

One of the challenging problems in large scale cyber-argumentation platforms is that users often engage and focus only on a few issues and leave other issues under-discussed and under-acknowledged. This kind of non-uniform participation obstructs the argumentation analysis models to retrieve collective intelligence from the underlying discussion. To resolve this problem, we developed an innovative opinion prediction model for a multi-issue cyber-argumentation environment. Our model predicts users’ opinions on the non-participated issues from similar users’ opinions on related issues using intelligent argumentation techniques and a collaborative filtering method. Based on our detailed experimental results on an empirical dataset collected using our cyber-argumentation platform, our model is 21.7% more accurate, handles data sparsity better than other popular opinion prediction methods. Our model can also predict opinions on multiple issues simultaneously with reasonable accuracy. Contrary to existing opinion prediction models, which only predict whether a user agrees on an issue, our model predicts how much a user agrees on the issue. To our knowledge, this is the first research to attempt multi-issue opinion prediction with the partial agreement in the cyber-argumentation platform. With additional data on non-participated issues, our opinion prediction model can help the collective intelligence analysis models to analyze social phenomena more effectively and accurately in the cyber argumentation platform.
Spectral analysis of blood flow oscillations to assess the plantar skin blood flow regulation in response to preconditioning local vibrations
Authors: Zhu Xiaotong , Zhang Keying , He Li , Liao Fuyuan , Ren Yuanchun , Jan Yih-Kuen
Published: April 2021

BACKGROUND: Local vibration has shown promise in improving skin blood flow and wound healing. However, the underlying mechanism of local vibration as a preconditioning intervention to alter plantar skin blood flow after walking is unclear. OBJECTIVE: The objective was to use wavelet analysis of skin blood flow oscillations to investigate the effect of preconditioning local vibration on plantar tissues after walking. METHODS: A double-blind, repeated measures design was tested in 10 healthy participants. The protocol included 10-min baseline, 10-min local vibrations (100 Hz or sham), 10-min walking, and 10-min recovery periods. Skin blood flow was measured over the first metatarsal head of the right foot during the baseline and recovery periods. Wavelet amplitudes after walking were expressed as the ratio of the wavelet amplitude before walking. RESULTS: The results showed the significant difference in the metabolic (vibration 10.06 ± 1.97, sham 5.78 ± 1.53, p < 0.01) and neurogenic (vibration 7.45 ± 1.54, sham 4.78 ± 1.22, p < 0.01) controls. There were no significant differences in the myogenic, respiratory and cardiac controls between the preconditioning local vibration and sham conditions. CONCLUSIONS: Our results showed that preconditioning local vibration altered the normalization rates of plantar skin blood flow after walking by stimulating the metabolic and neurogenic controls.
Implementation of clinical sequencing for molecular profiling in patients with advanced cancer
Authors: Fukui Tomoya , Sakai Kazuko , Sasaki Jiichiro , Kakegawa Mikiko Ishihara , Igawa Satoshi , Mitsufuji Hisashi , Takeda Masayuki , Takahama Takayuki , Nakagawa Kazuhiko , Nishio Kazuto , Naoki Katsuhiko
Published: April 2021

BACKGROUND: The advancement of cancer genomics has allowed for multiplex gene assays using next-generation sequencing (NGS) to be practically implemented, however, a clinical practice system remains to be established. OBJECTIVE: We evaluated the feasibility of clinical sequencing using NGS-based multiplex gene assays between cooperating medical institutions in patients with advanced cancers. METHODS: In this observational study, DNA and RNA samples prepared from existing tumor tissues were subjected to comprehensive genomic profiling using targeted sequencing. RESULTS: From January 2017 to March 2019, 36 samples from 33 patients were assessed. Of all patients, 27 (82%) had lung cancer, with the median age of 50 years (range 38–83). Multiplex gene panel tests were successfully carried out on 35/36 (97%) samples. Potentially actionable gene alterations were identified in 10/30 (33%) samples (3 HER2, 2 KRAS, 2 ALK, 1 PIK3CA, 1 RET, and 1 CDKN2A). In the 6 samples examined for resistant mechanisms, ALK I1171N mutation and MET copy number gain were detected in 2 patients with ALK rearrangement-positive lung cancer. CONCLUSIONS: Clinical sequencing using NGS-based multiplex gene assays between collaborating domestic medical institutions was feasible, with a success rate of > 97%. Overall, clinical sequencing benefits therapeutic decision-making in patients with advanced cancer.
Coiled-coil domain-containing protein-124 (Ccdc124) is a novel RNA binding factor up-regulated in endometrial, ovarian, and urinary bladder cancers
Authors: Arslan Özge , Soylu Neşe Karadağ , Akillilar Pelin Telkoparan , Tazebay Uygar H.
Published: April 2021

BACKGROUND: Coiled-coil domain containing protein-124 (Ccdc124) is a putative mRNA-binding factor associated with cell division, and ribosome biology. Previous reports mentioned an up-regulation of CCDC124 gene in cancer, and listed its mRNA in a molecular prognostic signature in breast cancer. OBJECTIVES: Establishing RNA-binding characteristics of Ccdc124 for a better molecular functional characterization, and carrying-out retrospective studies in order to evaluate its aberrant expression in human cancer samples from various tissue origins. METHODS: Bioinformatics calculations followed by RIP and RNA-seq experiments were performed to investigate mRNA targets of Ccdc124. Quantitative studies on arrays of cDNAs from different cancers and IHC assays on tissue arrays were used to assess CCDC124 expression levels in cancers. RESULTS: Ccdc124 was characterized as an RNA-binding protein (RBP) interacting with various mRNAs. CCDC124 mRNA levels were high in tumors, with a particular up-regulation in cancers from esophagus, adrenal gland, endometrium, liver, ovary, thyroid, and urinary bladder. IHC assays indicated strong Ccdc124 positivity in endometrial (95.4%), urinary bladder (68.4%), and ovarian cancers (86.8%). CONCLUSION: Ccdc124 is a cytokinesis related RBP interacting with various mRNAs. CCDC124 mRNA over-expression and an accompanied increase in Ccdc124 protein accumulation was reported in cancers, indicating this RBP as a novel cancer cell marker.
Exosomal microRNAs as potential biomarkers for osimertinib resistance of non-small cell lung cancer patients
Authors: Janpipatkul Keatdamrong , Trachu Narumol , Watcharenwong Piyakarn , Panvongsa Wittaya , Worakitchanon Wittawin , Metheetrairut Chanatip , Oranratnachai Songporn , Reungwetwattana Thanyanan , Chairoungdua Arthit
Published: April 2021

BACKGROUND: Osimertinib is an epidermal growth factor receptor-tyrosine kinase inhibitor that specifically targets the T790M mutation in cancer.Unfortunately, most non-small cell lung cancer (NSCLC) patients develop osimertinib resistance. Currently, the molecular biomarkers for monitoring osimertinib resistance are not available. OBJECTIVE: This study aimed to examine the profile of exosomal miRNA in the plasma of osimertinib-resistant NSCLC patients. METHODS: Plasma exosomal miRNA profiles of 8 NSCLC patients were analyzed by next-generation sequencing at osimertinib-sensitive and osimertinib-resistance stage.The expression of dysregulated exosomal miRNAs was validated and confirmed in another cohort of 19 NSCLC patients by qPCR. The relationship between exosomal miRNA upregulation and clinical prognosis, survival analysis was evaluated by Kaplan-Meier curves. RESULTS: In osimertinib-resistant NSCLC patients, 10 exosomal miRNAs were significantly dysregulated compared to baseline. Upregulation of all 10 candidate exosomal miRNAs tended to correlate with increased latency to treatment failure and improved overall survival. Among them, 4 exosomal miRNAs, miR-323-3p, miR-1468-3p, miR-5189-5p and miR-6513-5p were essentially upregulated and show the potential to be markers for the discrimination of osimertinib-resistance from osimertinib-sensitive NSCLC patients with high accuracy (p< 0.0001). CONCLUSIONS: Our results highlight the potential role of these exosomal miRNAs as molecular biomarkers for the detection of osimertinib resistance.
Downregulated hsa_circ_0036988 promotes proliferation and metastasis in oral squamous cell carcinoma
Authors: Zhang Hanyu , Zhang Biru , Chen Yuling , Zhang Ying , Qian Min , Yuan Lin , Shen Yuehong , Yang Hongyu
Published: April 2021

BACKGROUND: As a novel class of endogenous ncRNAs, Circular RNAs (circRNAs) have been verified to be involved in the carcinogenesis and tumor progression. OBJECTIVE: This study aimed to investigate the potential function of a candidate circRNA hsa_circ_0036988 in oral squamous cell carcinoma (OSCC). METHODS: The altered expression of hsa_circ_0036988 was validated by quantitative real-time polymerase chain reaction (qRT-PCR) in OSCC samples and OSCC cell lines. The associations between the levels of hsa_circ_0036988 and the clinicopathological features were statistically analysed. The function of hsa_circ_0036988 in OSCC were evaluated via a series of in vitro experiments by using constructed plasmids or siRNA. Western blotting assays were conducted to evaluate changes in protein expression levels. RESULTS: Hsa_circ_0036988 was significantly downregulated in OSCC tissues compared with adjacent normal tissues. While low expression of hsa_circ_0036988 was highly correlated with lymph nodes metastasis. Overexpression or knockdown of hsa_circ_0036988 significantly affected the proliferation, migration and invasion of OSCC cells. Furthermore, the altered expression of hsa_circ_0036988 have an impact on the epithelial-to-mesenchymal transition (EMT)-related protein expression levels. CONCLUSIONS: Our findings indicated that hsa_circ_0036988 may affect cell proliferation, migration and invasion by regulating EMT progress, which might provide a therapeutic strategy for the treatment of OSCC.
Improving the accuracy of forming a digital terrain model along the railway
Authors: Roshchin Dmitriy A.
Published: April 2021

The problem of improving the accuracy of digital terrain models created for monitoring and diagnostics of the railway track and the surrounding area is considered. A technical solution to this problem is presented, which includes a method for joint aerial photography and laser scanning, as well as a method for digital processing of the obtained data. The relevance of using this solution is due to the existence of zones of weak reception of signals from the global navigation satellite system, since in these zones the accuracy of constructing digital terrain models using currently used diagnostic spatial scanning systems is reduced. The technical solution is based on the method of digital processing of aerial photographs of the railway track. In this case, as elements of external orientation, the threads of the rail track located at a normalized distance from each other are used. The use of this method made it possible to increase the accuracy of determining the flight path of an aircraft over railway tracks and, as a result, the accuracy of calculating the coordinates of points on the earth's surface. As a result, a digital terrain model was created that is suitable for diagnostics and monitoring the condition of the railway trackbed. During simulation modeling, it was found that the application of the proposed method allowed to reduce to 50 % the confidence interval of the distribution of the error in determining the coordinates of points on the terrain and increase the accuracy of forming a digital terrain model. This promising technical solution for improving the accuracy of digital terrain models for railway track diagnostics is implemented using unmanned aerial vehicles that are part of the mobile diagnostic complex. The advantages of the proposed solution include high efficiency and availability of application.
Research for tourism development model in Cu lao Gieng – An Giang
Authors: Van Tran Thi Tuyet
Published: April 2021

Cu Lao Gieng (Gieng Island) – An Giang is gradually changing its face day by day from an isolated island with agriculture as a primary economic activity to a rural area for tourism development. The study proposes considering rural tourism as a specific approach not only to effectively exploit natural tourism potentials, humanistic tourism potentials, but also to help the region to solve its economic, cultural, and social problems in the community living on the island. From researched data and ethnographic fieldwork with participative observation in potential tourism areas through January to April 2020, positive results were achieved to identify natural resources in Gieng Island which are suitable for tourism development in rural areas. Since then, the study proposes tourism products for cultural and relic sightseeing tours, eco-tourism products for river tours, and specific agricultural eco-tourism products for Gieng Island. Positive rural tourism activities that contribute to increasing income and towards a sustainable livelihood for community participation. In addition to participating in the tourism development orientation of local authorities, the rural tourism model will harvest positive results if it receives closer attention from the community and businesses in the development process.
Exploiting cultural values of water for developing Agritourism in the Mekong Delta
Authors: Thinh Thieu Quang
Published: April 2021

Agritourism is a popular type of tourism in countries that have an advantage in agriculture. The development of agricultural tourism brings many opportunities for economic development and contributes to improving the social life of residents. The Mekong Delta is located in the lowland with thousands of densely crick-crossing canals formed by alluvium of the Mekong River. Its fertile soil is very favourable to aquatic rice and fruit-tree planting. The delta is the richest granary of Viet Nam. The Mekong Delta is also imbued with cultural identities. In this article, we will focus on analyzing cultural values of river in the Mekong Delta including cuisine, river landscape, agricultural production culture, craft village culture, floating market, festivals, traditional arts, folk games, etc. The research uses data collection, aggregating, analysis, and information evaluation. Data sources are collected from books, research papers in journals and combined with field surveys. The results show that the Mekong Delta, with its own unique and unique strengths, is one of the ideal locations for agricultural tourism development in the country. Preserving and developing the cultural values of water play a special role in the trend of tourism integration and development nowadays.
Enhancing the Role and Leadership Capacity in University Culture Development at Vietnam National University, Ho Chi Minh City
Authors: Ha Nguyen Duy Mong , Nhan Nguyen Thanh , Nhi Quach Hong
Published: April 2021

Organizational culture in general and school/university culture in particular are always initiated by leaders/founders, and the positive school/university culture by its turn will help the institution reach the goal of sustainable development. The paper focuses on the following objectives (1) to give an overview of university culture from the view of organizational culture with the emphasis on the core values, an analysis of the leaders' role in shaping university culture, next (2) to explore the concensus on some cultural values officially disseminated among the member institutions of VNU-HCM so as to recommend some shared values in VNU-HCM, and finally (3) to find out the advantages and disadvantages in leading the development of university culture and to recommend ways to enhance leadership. The authors used a combination of interdisciplinary theoretical research methods and conducted a survey of 153 lecturers and 157 staff members by the use of questionnaires; they also conducted in-depth interviews with some leaders/managers and small group interviews with some lecturers, staff members from 2 VNU-HCM member universities out of the 6 previously surveyed universities. The result confirms the important role of leadership in developing university culture and shows that the values which the majority agrees upon and supports include Responsibility, Creativity, Collaboration, etc. which can be shared among VNU-HCM. In addition to the advantages, there have still been some disadvantages and limitations to be overcome by the leaders in determining and explaining the content of those published values to stakeholders for better understanding and embedding them into the strategies and operations of the institutions in reality.
Efforts of the Vietnamese in finance sector in Cochinchina during the colonial period: the case of Vietnam Bank (Société annamite de crédit)
Authors: Toan Vo Phuc
Published: April 2021

In feudal society, Vietnamese spent the most care on study Confusim to become courting and agriculture production. Trade and handicrafts were considered secondary in the economic thinking of Vietnamese. When capitalism followed France's conquest path into Vietnam, Vietnamese became a community that adapted slowly to change in the economy. Among difficulties of the reforming thinking and economic activities process, the finance sector was considered the most restrictive field of Vietnamese. In 1912, the Association of Mutual Agriculture was born in Cochinchina became the first experiment of Vietnamese in the finance sector. However, due to the limited financial potential, these agricultural associations depend on loans from Indochina Bank. In 1919, with the rising national spirit in the movement to boycott Chinese overseas, the plan to set up a financial association named the Vietnam Bank had appeared but unsuccessful. Eight years later, the first bank of the Vietnamese was established and called by Vietnam bank, reflecting Vietnamese's efforts to build the financial association independent from foreign businessmen. That is the result of combining the economic strength and national spirit rising in the patriotic movement of indigenous elites in the late 1920s.
Розробка програмного комплексу раціонального проектування систем охолодження на основі термопресорних технологій
Authors: Коновалов Дмитро Вікторович , Радченко Роман Миколайович , Кобалава Галина Олександрівна , Фордуй Сергій Георгійович , Халдобін Віктор Павлович
Published: April 2021

The most common way to increase power and reduce fuel consumption by modern power plants is contact cooling of a gas or air flow by water injection. A promising development of this direction is to use aerothermopressor technologies. The use of heat air, which is compressed by the power plant compressors, accelerates the flow to a speed close to the sound one and almost instantaneous evaporation of injected water (the effect of thermo-gas-dynamic compression). It is important to determine the rational parameters of the organization of thermophysical and hydrodynamic processes when developing such technologies. In this case, one should be taken into account the appropriate development of the flow path design and a special software product. It is necessary to use methods and means to determine the optimal operating parameters of the power plant heat recovery systems. This paper presents a block diagram and an algorithm of a rational methodology for designing an aerothermopressor, which makes it possible to accurately determine the efficiency of using an aerothermopressor as part of a power plant (based on a gas turbine engine) for cooling cycle air, considering the peculiarities of operating modes in the flow path, as well as under various climatic operating conditions. The algorithm of a rational methodology for designing aerothermopressor technologies allows calculating the characteristics of equipment, systems, and circuit design solutions when used as part of a power plant: an electric generator; heat-using refrigerating machines (ejector refrigerating machines, absorption refrigerating machines); turbine generator or steam generator as part of a trigeneration unit or as part of a turbo-compound unit (power plants of marine vessels); recovery boiler of one or two pressures. Modeling the aerothermopressor-cooling system operation makes it possible to reveal the effectiveness of using such a system as part of a power plant and compare it with traditional methods of cooling and humidifying cycle air.
A Study of the Intercourse between Zhang Yu and Yu Ji---the Calligrapher in Yuan Dynasty
Authors: Song Yang
Published: April 2021

In the Yuan Dynasty, the minority nationalities was entered the Central Plain for the first time in Chinese history. During this period, although the status of Chinese people and intellectuals was low, their ideological control was loose, thus forming a unique literary style. The rapid promotion of the status of the humanities such as painting, calligraphy and literature in the life of the scholars brought about a brand-new attitude towards life, especially in the late Yuan Dynasty, the humanities taste and the artistic orientation showed many new changes. And the development of literature, calligraphy and painting in the Song Dynasty, as well as the establishment of the regime in the Yuan Dynasty all accelerated this process.. Facing the setbacks brought by the Mongolian yuan rule, some intellectuals turned to create an atmosphere through some group activities of calligraphy and painting in this period, and literature and art were also given a higher status. As a famous calligrapher in the middle and late Yuan Dynasty, Zhang Yu was also an influential Taoist and poet. On the basis of studying Zhang Yu's calligraphy art, this paper analyzes his social intercourse and its influence on his calligraphy thoughts and artistic style. Especially in calligraphy, he was first taught by Zhao Mengfu, and then learned from Huaisu and Zhang Xu, forming a handsome and free style, which is very valuable. In addition, he made many friends all his life. After becoming a monk, he traveled to various famous mountains in the south of the Yangtze River and made friends with famous people. Therefore,  studying the intercourse between Zhang Yu and yu Ji can restore the real situation of the Literati's communication in the middle and late yuan dynasty, understand the multiple Zhang Yu's accomplishments of Taoism, poet and calligrapher, and better understand the relationship between Zhang Yu and Yu Ji,  It can also learn about his experience of learning calligraphy and the internal and external causes of the formation of his calligraphy style, and the influence and function of Mingxi Literati's elegant and Yuji's intercourse on the formation of his artistic style.
Manufacturing and Characterization Process of Polymer Concrete with Aggregate From Pumice Stone and Corn Husk Fiber as A Filler
Authors: Maghfirah Awan
Published: April 2021

Research has been carried out regarding the manufacturing process of polymer concrete made from a mixture of pumice, sand (1: 1), corn husk fiber, epoxy and thinner resin. This research was conducted to determine the characterization of polymer concrete which will be tested physically and mechanically with the best composition mixture. The physical properties of polymer concrete which were analyzed namely density, porosity and water absorption; mechanical properties including impact strength, flexural strength and compressive strength, and polymer concrete microstructure analysis, namely SEM-EDX. The best results were obtained with a mixture of pumice, sand (1:1), corn husk fiber, epoxy and thinner resin. The result are as stated here, density: 1.84 g/cm3 with composition (49:49:2) 30 g epoxy resin, porosity : 0.44% with composition (50:50:0) 20 g epoxy resin, water absorption: 1.8% with composition (50:50:0) 25 g of epoxy resin. Whereas mechanical properties, on impact tests: 4.956 KJ/m2 with composition of (47:47:6) 25 g epoxy resin, flexural test: 22.22 MPa with composition of (45:45:0) 30 g epoxy resin, pressure test: 8.41 MPa with composition of (49:49:2) 30 g epoxy resin. XRD analysis shows that each of its constituents still have quartz, pumice, quartz, pumice-shaped hexagonal crystals, while corn husk fibers are amorphous crystals. The average sound absorption coefficient for the three samples (20%, 25%, and 30%) are 0.178; 0.152; and 0.234 at a frequency of 500 Hz - 6300 Hz, which meets the requirements of ISO 11654 and ASTM C.384.
Carbon Electrodes from Corn Stalk Core for Supercapacitor Application
Authors: Juliani Rita
Published: April 2021

The natural pore structure of corn stalk core potentially contributes as a basic material for activated carbon. The activated carbon from a combination of chemical and physical activation is presented for capacitive energy storage. The chemical activation was carried out using 0.4 M KOH followed by pyrolysis process up to 600°C in an N2 atmosphere. The physical activation was conducted at various temperatures such as 600°C, 700°C, and 800°C with a CO2 gas flow rate of 10 mL/min. Supercapacitor cells were made from carbon electrodes of corn stalk core, 316L stainless steel as the current collector, duck eggshell as the separator, and 1 M H2SO4 as the electrolyte solution. The physical properties of carbon electrodes were characterized by identifying the density, surface morphology and chemical structure of carbon. The density value was obtained based on the mass, thickness, and diameter of the carbon electrode. The lowest density was found at the activation temperature of 700°C which has the potential to produce the best performance in supercapacitor cells. SEM was used to characterize the surface morphology. The activation temperature of 700°C showed the formation of irregular structures and provided large pores for the diffusion of electrolyte ions into the carbon matrix. The FTIR characterization was used to determine the carbon chain elements which formed double layers in supercapacitor cells. The electrochemical properties of supercapacitor cells were tested using cyclic voltammetry. Specific capacitances at the activation temperature of 600°C, 700°C, and 800°C were 90 Fg-1, 108.92 Fg-1, and 44.875 Fg-1, respectively. These results showed that the activation temperature of 700°C was the best temperature in the preparation of supercapacitor electrodes from corn stalk core as the biomass material.
Manufacture and Characterization of Pandan Wangi (Pandanus amaryllifolius Roxb) Fiber-Based Composite Board with Epoxy Resin
Authors: Sembiring Timbangen
Published: April 2021

The manufacture and characterization of pandan wangi fiber-based compositeboards with epoxy resin using random fiber orientation method, fiber length 4 cm, withfiber composition in grams (0, 0.1, 0.2, 0.3, 0.4, 0.5), mechanical and physical testing hasbeen carried out. The results obtained a tensile strength value of 52.26 MPa, flexuralstrength 49.74 MPa, impact strength 30.6 kJ.mm-2, density 1.07 g.cm-3, and moisturecontent 2.05%. The results showed that the mechanical and physical properties that meetthe JIS A5905: 2003 standard are tensile strength > 0.4 MPa, bending strength > 32 MPa,density 0.3-1.3 g.cm-3, and moisture content 5-13 %. Therefore, pandan wangi fibercomposite with epoxy resin can be applied to car bumpers.
I misteri che circondano la malattia di Kawasaki: una recensione della letteratura
Authors: Rossi Karoline , Moreira Danilo José Silva , Fonseca Juliana Brito da , Vasconcelos Suzana dos Santos , Oliveira Vinicius Faustino Lima de , Dias Claudio Alberto Gellis de Mattos , Oliveira Euzébio de , Dendasck Carla Viana , Araújo Maria Helena Mendonça de , Fecury Amanda Alves
Published: April 2021

La malattia di Kawasaki (DK) o sindrome del linfonodo mucocutaneo è una vasculite sistemica, che colpisce principalmente i bambini sotto i cinque anni di età con discendenza asiatica, ma può anche raggiungere altre fasce d’età, così come qualsiasi altra razza. Il quadro clinico di DK ha tre fasi: stadio febbrile acuto, in cui la congestione congiuntivale, la mucosite orale, l’eritema, la sfaldamento, l’eruzione polimorfica e la linfoadenopatia laterale, compaiono come sintomi principali; lo stadio subacuto, che si verifica alla fine della febbre, e porta alla comparsa di pelle che sfalda negli arti, artrite, artralgia e trombocitosi e infine lo stadio di convalescenza che si verifica quando i sintomi si dissipano quasi e continuano fino alla loro normalizzazione. Il trattamento più utilizzato si verifica dalla somministrazione di immunoglobulina endovenosa, che per una migliore prognosi della patologia dovrebbe essere iniziata precocemente.
ANTI-CRISIS MANAGEMENT OF THE ENTERPRISE IN THE LOW TOUCH ECONOMY
Authors:   Vasyl’ Stus Donetsk National University, Akhnovska Inna , Panasiuk Pavlo ,   Vasyl’ Stus Donetsk National University
Published: April 2021

The crisis events and processes that resulted from the COVID-2019 pandemic are one of the most important problems for today's economy. The article is not limited to classical concepts, but contains many new and modern, in particular, the paper attempts to form a mechanism of crisis management of the enterprise in a new phenomenon and concept – low touch economy. The object of the article is the process of impact of crisis phenomena on the financial and economic condition of the enterprise. The subject of the article is the mechanism of crisis management of the enterprise in the economy of minimal contact, as an effective way to overcome financial and economic problems. The purpose of the article is to develop recommendations and effective measures to prevent and overcome the main consequences of crisis phenomena and processes. In the process of performing research the following general scientific and special research methods were used, in particular: analysis, synthesis, comparison, system approach, factor analysis. An element of the scientific novelty of the work is the formation of the mechanism of crisis management of the enterprise in the economy of minimal contact and the development of a modified DuPont model on the impact of a number of factors on sales profitability. Objectives of the study: explore the essence of the low touch economy; analyze the impact of the pandemic on the economy of Ukraine; identify the main trends in the impact of crisis phenomena in the economy; choose an industry that needs urgent attention and influence; to study the industry and its enterprises and identify crisis phenomena; to investigate crisis phenomena and to consider the anti-crisis mechanism for their overcoming; to offer a set of basic anti-crisis measures to overcome the main problems of the industry and its enterprises and the consequences of working in extreme conditions. The practical significance of the obtained results lies in the proposal to implement a number of recommendations and measures for effective overcoming and future prevention of anti-crisis processes and the consequences of their impact on the economy.