bluuebunny/crossref_metadata_2025 huggingface dataset:
Forecasting the socio-economic development of the municipality: The budgetary aspect
Authors: Fattakhov R. V. , Nizamutdinov M. M. , Pivovarova O. V. , Oreshnikov V. V. , Stroev P. V.
Published: July 2023

The article considers the issues associated with the formation of a forecast for the socio-economic development of a municipality in the context of budgetary resources. The relevance of the study is due to the variety of theoretical and practical approaches to forecasting the socio-economic development of municipalities, which are used in the activities of local governments with different degrees of effectiveness, which has a negative impact on strategic planning at the municipal level as a whole. The purpose of the study is to develop an integrated approach to the formation of a forecast for a socio-economic development of a municipality with emphasis on the budgetary sphere. The research methodology is based on the use of complex and statistical analysis, methods of economic and mathematical modeling. Approbation was carried out on the example of the municipality “City of Kirov”. Conceptual scheme for construction of economic and mathematical model of a municipal formation is substantiated and proposed, and also allow to form a forecast of socioeconomic development of a municipality for long-term period, in which factors are identified and influence on the local budget parameters. To build an economic and mathematical model, a municipal statistical base for the city of Kirov was formed for a twenty-year period. On the basis of the collected statistical series, balance ratios and factor dependencies of the model parameters were identified and formalized in accordance with the logic of the relationship of indicators within the model of the socio-economic system of the municipal level by constructing a system of econometric equations and conducting a correlation-regression analysis. On the basis of the constructed economic and mathematical model, a scenario forecast was implemented and estimates of changes in the budget parameters of the city of Kirov for the period up to 2035 were obtained. It is concluded that the approach developed by the authors to the formation of the forecast for a socio-economic development at the municipal level is universal for various types of municipalities in the Russian Federation and can be applied as for municipal socio-economic system as a whole and for its individual subsystems and spheres.
Finance in Russia and the world: Сonceptual aspects
Authors: Panova G. S. , Larionova I. V.
Published: July 2023

The modern digital economy requires “new finance”. The subject of the study is to clarify their content, and the goal is to develop the author’s view of the term of “finance”. The relevance of the topic is dictated by the need to analyze complex theoretical questions of technological transformation of financial markets and activities of financial intermediaries. The scientific novelty consists of the theoretical contribution of the theory of finance evolution in the digital era. The main research methods are systemic and logical approaches, the method of theoretical cognition, the historical method and the method of scientific abstraction. The results of the study are clarification the essence of finance and applied issues of their use in Russia and abroad. It will contribute to the development of a scientific doctrine of digital assets circulation; will allow to refine the model of the activities of financial intermediaries’ regulation in our country and lay the foundation for the formation of global norms and rules for the development of national and international financial markets of the CIS, the EAEU, the SCO, and BRICS countries. The conclusions of the study are: a) confirmation of the author’s position on the essence of finance. The paper indicates that, in the context of the economy’s digital revolution, the substance of economic categories stays constant, although their forms vary according to innovation, behavioral characteristics, and other factors; b) without rejecting the rational knowledge formed in the Western scientific school, the authors emphasize that the social sciences cannot be global, they have a national character; c) based on the investigation, the author defines “finance” as a distribution category in the development and utilization of financial resources.
Improvement of the mechanism of collecting windfall taxes and fees in the era of international sanctions and the growth of public spending (2023–2024)
Authors: Burdelova T. N.
Published: July 2023

The subject of the study is modernization of budget relations based on horizontal decentralized connections. The relevance of the study is mitigation of the shortcomings and risks in 2023, especially the tax on excess profits of previous years. The goal of the study is to develop a fundamentally different scheme for financing a part of government spending on the principles of “uberization” that is mutually beneficial for the state and business. The objective of the study is to improve the mechanism of the one-time fee on large business (windfall tax). The research method is the analysis of business community opinions, foreign experience, results of research work of the Department of Public Finance and the Department of Taxation and Tax Administration of the Financial University. The basic principles of building a new decentralized electronic platform are described. Specific examples of federal budget expenditures that should be “uberized” in the first place are considered: federal subsidies for NPOs and financing of the “Krug Dobra” fund. The scientific novelty and practical significance of the proposed new mechanism for additional financing of public expenditures is direct connection of payers and recipients of budget subsidies on an electronic platform while preserving the control functions of the State. The conclusion is made about the practical applicability of the proposed new scheme of “uberization” of budgetary relations as a mechanism for collecting the one-time fee on large businesses (windfall tax), which can actually unload the federal budget, “liberating” it from part of expenses, without creating additional sanctions and other risks for participants.
On the yield to maturity of a coupon bond
Authors: Popova N. V.
Published: July 2023

The article is devoted to one of the main characteristics of the bond-the yield to maturity. The subject of the study is the type of yield to maturity indicator. It is known, that there are two approaches to determining the yield to maturity of a bond: the nominal interest rate and the effective interest rate method. The relevance of the study is due to the fact that, as preliminary comparison has shown, these two approaches to determining the yield to maturity may be unequal in research. The purpose of this paper is to conduct a study of the dependence of the research results on the type of yield to maturity indicator. For this purpose, the problem of the dependence of the interest rate risk of a bond on the number of coupon payments per year was chosen. The literature contains reports on the dependence on the frequency of coupon payments over the term a bond that evaluates interest rate risk. The problem of the dependence directly of the interest rate risk of a bond on the number of coupon payments per year has not been considered in the literature. The task was set to determine which of the two approaches to determining the yield to maturity allows us to obtain results for interest rate risk that are consistent with the dependence of the duration of the bond on the number of coupon payments per year. Methods of differential calculus are used to solve the problem. As a result, it was proved that the use of the yield to maturity determined by the effective interest rate method allows us to obtain results consistent with the dependence of the duration of the bond on the number of coupon payments per year. The results obtained by using the yield to maturity determined by the nominal interest rate method do not agree with the dependence of the duration of the bond on the number of coupon payments per year. It is concluded that the yield to maturity determined by the nominal interest rate method in research may lead to incorrect results, in contrast to the yield to maturity in the form of an effective interest rate. Results of the work can be useful to both the bond issuer and the investor, as well as in theoretical studies of investments in bonds.
Innovation ecosystem as a new form of organizational integrity and a mechanism for financing and reproducing innovations
Authors: Ezangina I. A. , Malovichko A. E. , Khryseva A. A.
Published: July 2023

The subject of the study is the factors, models and processes of the emergence and development of modern innovation ecosystems (IES) that ensure the flow of assets, their transformation into innovations, and distribution across the territories of economic growth. The purpose of the paper is to identify the factors and trends in the development of the IES, based on the practices of individual States and driving forces of the world. The methods of sampling, grouping, comparison, analogy, analysis, generalization, system-structural approach to assessing the development of the subject of research are used. The result of the study was the definition of IES as an open institutional mechanism for the reproduction of innovations, transforming the competitive market environment in the direction of the dominance of stable intersectoral network structures. The decisive role of IES in the chain “national innovation strategy → (start-ups + companies + state institutions) → IES → [new start-ups + deep-tech companies unicorns (hectocorns) + new level of quality of the competitive environment] → global competitive advantage of the State” is established. On the example of China, the prospects of formation a model of the national IES, focused on long-term development, technological selfsufficiency of the State and, at the same time, providing the possibility of expansion to new markets, are proved. The authors see the prospects for further research of the IES in Russia in a shift of emphasis from the “banking” nature of the IES towards the formation of large territorial centers of the location of the IES while maintaining strong institutional support of the State.
Reorganization of the system of intra-holding settlements: Methodological tools, efficiency assessment
Authors: Nemtseva Yu. V. , Bekker A. V.
Published: July 2023

In the context of growth trends in the scale and diversification of business, the internal costs of companies with a complex holding structure are also increasing. Solutions that improve the efficiency of settlement systems are particularly relevant and significant. Therefore, the paper is devoted to the problems of building settlement systems that minimize the negative impact of certain factors reducing the economic efficiency of calculations. The purpose of the study is to develop methodological foundations for rationalization the holding’s settlement system based on clearing obligations. The tasks of this paper are set as follows: to propose methodological tools for the reorganization of the system of intra-holding settlements; to test the proposed recommendations for the rationalization of the settlement system in holding structures. According to the results of the study, the authors systematized a set of factors that determine the effectiveness of the system of intra-group settlements. It is proposed to attribute the number of payment transactions and the volume of payment turnover to the quantitative factors of the settlement system efficiency. Qualitative factors of the settlement system efficiency are associated with the consolidation of financial information, the degree of automation of settlement processes, and the flexibility of the settlement system. The authors used the Ward method to build a cluster structure of the holding based on the analysis of payment turnover of pairs of companies, statistical methods of quantitative and qualitative assessment of the effectiveness of the holding’s settlement system. The scientific novelty is expressed by the fact that the paper offers methodological tools for reorganization the system of intra-holding settlements. A methodology for rationalization the holding’s settlement system based on clearing obligations, universal in use by holding-type companies, has been developed and its approbation has been carried out. The conclusions based on the results of the study form recommendations for changing some aspects of the holding’s activities in accordance with the results of the modernization of the holding’s settlement system. The method of rationalization of the system of intra-holding settlements proposed by the authors has versatility in application and can be used in solving management tasks within any holding.
Preliminary evaluation methodology for payback infrastructure projects in private-public partnership
Authors: Shergin D. A. , Annenkov G. A.
Published: July 2023

The authors of the article present the results of scientific and practical research on the development of methods of primary assessment of the efficiency of payback infrastructure projects public-private partnerships achieved through the monitoring and analysis of the state company’s investment activities and project portfolio management. The purpose of this study is to develop methodology for preliminary evaluation of payback infrastructure projects, that is able to be used to evaluate efficiency of capital investment at the stage of initial project appraisal and planning and to range perspective projects in accordance with their efficiency. The subject of the article: efficiency of payback investment projects in the infrastructure industry. The relevance of the study is determined by absence of a generally accepted methodology for initial evaluation of investment projects, that allows for into consideration the legal and economic specifics of federal projects approval and implementation in the regions of Russia. The methodology formed on the basis of an interdisciplinary approach implemented in the course of approval and evaluation practice of investment projects appraisal within the framework of the activities of a state-owned company. The instrumentation reviewed in this paper is based on data from financial modeling of infrastructure projects, with preliminary geographical modeling of traffic flow intensity. It includes the following modified indicators based on discounted cash flows: consolidated coverage ratio, ratio of operating income to capital investment, share of extrabudgetary funding in the life cycle of a project, internal rate of return. These indicators are unified into a single integral indicator, which allows to rank and manage future projects in a company’s portfolio. The applicability of the proposed methodology has been verified by the results of implementation of the public-private partnership projects. Based on the results of the study a financial model for initial assessment of project efficiency has been prepared, which can be used as the initial stage of project justification.
Upper limits of financial risk measures of various degrees of catastrophicity
Authors: Minasyan V. B.
Published: July 2023

The question of assessing the magnitude of risks using certain risk measures presents one of the most important problems of modern finance. However, many modern risk measures require considerable effort at times and, in practice, the investor would have sufficient knowledge of the upper limits of those risks. Comparing them with their risk appetite, an investor, in the case when the upper limits of risk measures would fit into their risk appetite, could assess this risk as acceptable to themselves. Only if the upper limit of the appropriate risk measure exceeded their risk appetite would there be a need for a detailed assessment of the appropriate risk measure. The aim of this paper is to consider upper limits first for known risk measures such as value at risk, VaR, and expected deficit or notional value at risk of ES. Next, upper limits are obtained for the risk measures VaR to the degree of t, VaR(t ) and ES to the degree of t, ES(t ) introduced by the author into scientific use. Also, using the results of V. Hürlimann, representations for maximum values of risk measures VaR(t ) and ES(t ) . The method of obtaining the described results is the application of certain representations of all these risk measures, the application of P. Chebyshev’s inequalities, as well as the results of V. Hürlimann. As a result of the study, descriptions have been proposed for the upper limits, expressing them only after a few first moments of the loss distribution law. The author concludes that the study of the upper limits of important risk measures of scientific interest has practical value for the express assessment of relevant risks.
Distribution of the impact of monetary and fiscal policy instruments by technological modes and sectors of the economy
Authors: Sukharev O. S. , Afanasyeva O. N.
Published: July 2023

The subject of the study is the impact of monetary and fiscal policy instruments on the functioning of the structural elements of the economy, represented by sectors and technological structures. The purpose of the paper is to establish how the monetary and individual fiscal policy instruments influenced the structure of the Russian economy. The methodology consists of the “distributed control” doctrine, which modifies Tinbergen’s principle of “goals-instruments” of macroeconomic policy, since it allows to reveal the unequal power of the instrument by objects of economy, structural and empirical analysis, correlation-regression analysis, with which it is possible to show a picture of the distributed influence of monetary and fiscal policy instruments. A general algorithm of research and application of the doctrine of “distributed management” at the macroeconomic level are developed — by technological structures and economic sectors, which made it possible to obtain a picture of the distribution of the influence of monetary policy on economic objects, to identify the significance of individual fiscal policy instruments. The general result of the research is that the doctrine of “distributed management” used not only modifies the classical theory of economic policy, but also confirms that, in addition to the economic structure, the impact structure of standard monetary and fiscal policy instruments arises. The distribution of the most significant instruments of monetary and fiscal policy by technology and three sectors of the Russian economy to ensure its growth in the period 2011–2021 are obtained. It was found that the development of high-level processing and technological modes were more influenced by monetary than budgetary instruments, and the transfer of resources to the national welfare fund hindered their development. Fiscal policy measures — revenues, expenditures, budget deficit/surplus — did not have an equal impact on the development of the considered sectors of the economy. The prospect of further research is to develop a software module that includes ongoing analysis and automates calculations based on available statistics to change of monetary and fiscal policy measures in Russia aimed at developing the manufacturing sector and high-tech.
ZIRCON OF METAMORPHIC ROCKS. FEATURES OF CRYSTAL MORPHOLOGY, CHEMISM AND ZONAL STRUCTURE
Authors:   Lomonosov Moscow State University, Gromalova Natalya
Published: July 2023

The article summarizes information of the crystal morphological features of zircon from metamorphic rocks, its internal structure, crystal matrix chemism, and rare earth element distribution. These data make it possible to reveal discriminant features of zircon as depend on the origin of the substance crystallized and the conditions of its transformation during metamorphism. For a reliable assessment of the content of elements in zircon, it is necessary to perform a set of analytical methods, since the concentration of impurities varies significantly even in samples from the same rock. This makes it possible to determine the range of variations and to evaluate the dynamics of the distribution of elements in zircons from metamorphic rocks of various genesis.
SILICATIZATION OF CULTURAL LAYER SOILS IN ARCHAEOLOGICAL EXCAVATIONS
Authors: Abramova Tamara
Published: July 2023

The preservation and in situ museumification of archaeological objects of stratigraphic sections of cultural layer soils, whose value depends on the integrity and intactness, is a complex and underdeveloped problem. This is due to some specific properties of these soils, such as the heterogeneity of soil composition both vertically and horizontally; the diversity of inclusions, the uneven compressibility of the strata, the ability to self-compact from their weight, changes in hydrogeological conditions, soil soaking and the decomposition of organic inclusions. As a result, these soils are the most unfavorable in artificial stabilization. In the study, a wide range of soils of the cultural layer from various places with stabilization plans were examined. Our analysis of the deposits made it possible to separate these soils by geochemical features which have the highest impact on the intensity of the chemical solution’s interaction processes with the mineral component of the soil. This chemical solution is in a family of silicate compositions with surfactants of the amide class. These organic liquid glass hardeners activate the skeletal part of the soil and provide the complete mobilization of the main cementing substance (silica gel). Pilot tests of various modifications of organo-silicate solutions were carried out at the sites of Chersonesos (Sevastopol), Tanais (Rostov region), Moscow, etc. The soils ranged from sandy to loamy with various inclusions (building stone, ceramics, bones, fish scales, shells, ash, soot, plant roots, etc.). Soil stabilization was carried out by injecting chemical solutions of various densities with the use of vertical and horizontal injections. An important finding of the work was that forming a new soil mass with improved properties was determined by the composition, properties of the soil and injection solutions, the distance from the injector and the depth of the stabilized area. For the first time in Russia, at the center of Moscow, it was possible to preserve the soil mass in situ of the cultural layer of the 16-17th centuries and exhibit it for 32 years to visitors in the underground archaeological museum.
ANALYSIS OF GEOTOURISM DEVELOPMENT PERSPECTIVES BASED ON THE GEOHERITAGE REPRESENTATION IN NATURAL SCIENCE MUSEUMS
Authors: Glazyrina Yulia , Buzmakov Sergey
Published: July 2023

The article analyzes geotourism perspectives based on natural history museums. Significant trends for the integrated development of geotourism and natural history museums are formulated. These trends allow revealing prospective views on the tourist potential of the territory. In order to clarify the geotourism development potential at the place of the Earth’s geochronological key stages, several museums were analyzed in conjunction with the geotoponyms of geological systems in the world. A geoheritage interpretation model, correlating ex situ museums and in situ objects, is developed. It includes territorial aspects and substantive formats of interpretation, depending on the target audience and the format of interaction with geoheritage. Geoheritage evaluation includes three groups of criteria (scientific, educational and geotourism), each being estimated to summarize approaches for the museum representation. The criteria are ranged according to the comparison purpose of in situ and ex situ forms. The variety of geoheritage interpretation forms allows suggesting recommendations for geotourism development. One symbolically significant way is the museumification of in situ and ex situ objects to correlate the museum network and the network of protected areas as a complex tourist infrastructure. For the Perm Region as a historically significant place of the Permian geological system discovery, the priority is to develop a complex plan to integrate the possibilities of geoheritage representation through museum forms and in the natural environment. In view of the objective scientific data, the Perm Region has no GSSP of the Permian system; therefore the role of the “symbolic stratotype” should have the Permian Period Museum as the basic object of the geotourism infrastructure and the starting point of tourist routes. The supportive role in the Permian geoheritage preservation and representation belongs to the network of municipal and university museums.
RUSSIAN NORTH. IMAGES OF RUSSIA IN D.N. ANUCHIN’S PHOTO COLLECTION
Authors: Maximov Yuriy , Matviets Pavel , Matviets Polina
Published: July 2023

An exhibition of photographs from the collection of Dmitry Nikolayevich Anuchin, organized jointly with the Earth Science Museum of Lomonosov Moscow State University, has opened in the Maritime Exhibition Center of the Museum of the World Ocean in Svetlogorsk, Kaliningrad region. Dmitry Nikolayevich Anuchin (1843-1923) was a famous Russian anthropologist, ethnographer, archaeologist, geographer, and museologist. D.N. Anuchin was active in spreading geographical knowledge and creating a Russian university geography school, and educated a great number of students. Dmitry Nikolayevich was at the origin of the creation of the Geographical Museum of Moscow University, which he headed for more than 20 years. The exhibition shows about 70 prints of photographs of the Russian North of the late 19th-early 20th centuries from D.N. Anuchin’s photo collection. A significant part of the collection (more than 3.5 thousand units) is now stored in the funds of the Earth Science Museum of the Lomonosov Moscow State University.
S.I. LIMANOVA-KOLOSOVA AND HER MICROBIOLOGICAL STUDIES OF RESERVOIRS OF TATARIA AND THE URALS
Authors:   Kazan Federal University, Trushin Maxim
Published: July 2023

Based on some previously unpublished archival materials, the biography of Lecturer at Kazan University S.I. Limanova-Kolosova (1899-?), a little-known Russian microbiologist, was restored for the first time. Seraphima Ivanovna Kolosova (née Limanova) was born in the family of a veterinarian and received a natural science education at Kazan University. Since the beginning of the 1920s, she started working at the Botanical Laboratory under the guidance of Professor A.P. Ponomarev, who at that time was actively developing the microbiological lead. The works of S.I. Limanova-Kolosova were devoted to analysis of the microflora of various reservoirs in Tatarstan and neighboring regions. Her research was accompanied by lectures on general microbiology, aquatic and soil microbiology, technical microbiology and fermentation physiology. The scientific works of S.I. Limanova-Kolosova have allowed microbiological topics to take root within the walls of Kazan University and gave a further impetus to the development of this lead.
MICRIBIOLOGICAL ASSESSMENT OF DRINKING WATER AND PERVASIVENESS OF WATER BORN DISEASES IN DUNGARPUR, RAJASTHAN
Authors: Ninama Yogita
Published: July 2023

INTRODUCTION: This study assessed E. coli counts in drinking water from different sources and illustrates the high prevalence of gastrointestinal diseases in Dungarpur districts of southern Rajasthan, India. METHODOLOGY: The microbiological parameters studied were pathogen detection, total coliform count and total viable count. Microbiological analysis of water samples were performed as described in Standard Methods for the Examination of Water and Wastewater (APHA - AWWA, 2005 and Chhabra, 2008). Total coliform count performed by the Most Probable Number (MPN) method, which is commonly used as an indicator of potability of water. Presence of the bacteria from Enterobacteriacae family was confirmed using IMViC test. The data of Indoor and Outdoor patients for such disease were collected.RESULT AND DISCUSSION: Seasonal fluctuation in coliform counts was found to be prominent and varied from over 200 MPN/ 100 ml in winter to more than 1600 (over the measurable limit) in rainy season in three water bodies. Escherichia coli counts ranged from 17 to 500 MPN/100 ml for all the sampled sites. E. coli and Total coliform were highest in rainy season. Results of IMViC test indicates that in rainy season except for Margia Dam all the water bodies were laden with all five categories of enteric bacteria namely E. coli, Shigella, Citrobacter and Klebsiella/ Enterobacter. The contamination is significantly higher during the wet season compared to dry season, due to WBD patients does exhibit a trend that in late summer and rainy month’s incidence of the disease symptoms intensifies. CONCLUSION: Dungarpur district was analyzed and same pattern of seasonal variation in microbial counts of water samples and similar hospital data trend was observed. So, somehow the microbial contamination of surface water and run-off reaches the ground-water table. Therefore, hospital data confirms that the source of drinking water plays a strong, positive and significant association with waterborne diseases.
Penerapan Data Protection Dengan Metode Replikasi Snapmirror Relationship Pada Perusahan XYZ
Authors: Mulya Imam , Ramayanti Desi , Gatsu Puspita
Published: July 2023

The development of an IT infrastructure at this time is growing rapidly, plus a lot of data, company transactions are stored on the server and thus require external storage as a production data storage medium, such as transactions, employee payroll applications to email used by employees of PT. XYZ. However, there are obstacles such as data corruption on the server so that databases and applications stored on the server are lost and therefore a method is needed to protect data and back up data on the company, the method used is the snapmirror replication method. Where data on a server located in the DC (Data Center) is stored in external storage then the data is replicated on external storage located in the DRC (Disaster Recovery Center), which later the external storage will create a snapshot copy. And later it is hoped that with this snapmirror replication, if corrupt data occurs, it will be recovered properly.
GUIA DIDÁTICO - A POTÊNCIA DAS NARRATIVAS QUILOMBOLAS NO PROCESSO DE ALFABETIZAÇÃO
Authors: Santana Patrícia Vieira , Araújo Márcia Moreira de
Published: July 2023

Vivemos em um país que foi um dos últimos a abolir a
escravidão no mundo, e as sequelas desse passado ainda
estão presentes em nosso dia a dia.
Consciente dos desafios de proporcionar uma educação
emancipadora e que conceda cidadania aos povos
remanescentes de quilombos, este guia foi desenvolvido,
trazendo embasamento legal para essa reflexão,
propostas de leitura e conceitos que ampliam o
entendimento sobre essa temática.
De maneira dinâmica e que permite ao leitor uma
proximidade com conteúdos relevantes e com sugestões
de atividades para professores no ciclo de alfabetização,
nas séries do 1º e 2º anos do Ensino Fundamental,
visando contribuir no ensino de História e Cultura Afro-brasileira e Africana de forma lúdica e que auxilie no
processo de alfabetização.
Estudio de programas orientados a impulsar la innovación empresarial en Paraguay y Uruguay. Un análisis desde la perspectiva de la Teoría de Schumpeter
Authors: Olmedo-Barchello Selva , García Marikena
Published: July 2023

Fortalecer las capacidades de investigación, desarrollo e innovación constituyen elementos claves para impulsar el desarrollo y crecimiento de un país. El objetivo del artículo consiste en realizar un análisis de casos comparando programas orientados a la innovación empresarial ejecutados por el Consejo Nacional de Ciencia, Tecnología e Innovación (CONACYT) y la Agencia Nacional de Investigación e Innovación (ANII). La metodología aplicada fue de índole bibliográfica documental, para lo cual, se realizó una revisión de la literatura que brindó sustento teórico para seguidamente adentrarse a la interpretación y análisis de los informes evaluativos de los programas ejecutados en ambos países. Los resultados indican que los programas llevados adelante por la ANII se encuentran mayormente dirigidos a la ampliación de conocimientos y habilidades internas a las empresas y en la incorporación de nuevas tecnologías en los procesos productivos. Mientras que, en CONACYT, los esfuerzos estuvieron dirigidos a hacer frente a la falta de materiales tecnológicos y de personal capacitado, logrando así importantes cambios. Se concluye que los instrumentos de innovación presentaron en ambos casos saldo positivo, aunque también revela la importancia del financiamiento público para generar cambios en el comportamiento de las empresas promoviendo de esta manera la destrucción creativa.
Research on a hybrid optical storage control strategy based on a DC virtual synchronous generator and MPC
Authors: Xiaoge Chen
Published: July 2023

There are many problems in optical storage systems, including fault ride-through and disturbance, inadequate DC bus voltage support, and high state variable overshoot. The main problem is caused by the slow dynamic reaction speed of the energy storage system based on traditional PI control to the DC voltage of the optical storage system. A hybrid optical storage system control optimization strategy based on a DC virtual synchronous machines and improved model predictive control (MPC) was proposed in the paper as a solution to the aforementioned issues. A strategy based on DC virtual synchronous generator can improve the damping braces and overshoot suppression of DC voltage fluctuation during the disruption process of the energy storage system in the optical storage system. The dynamic response speed of energy storage in optical storage systems may be further increased based on the improved MPC. The effectiveness and validity of the control strategy proposed in the paper were verified by the simulation examples.
The reality of blended learning implementation among upper elementary school teachers in UNRWA schools in Bethlehem and Hebron Governorates
Authors: Ikhlas Moh’D Abu Khairan  , Ibrahim Moh’D Arman  , Awni Abu Tair
Published: July 2023

This study aimed to explore the reality of Blended learning implementation among upper elementary school teachers in the governorates of Bethlehem and Hebron. The descriptive approach was adopted, and a tool was developed to measure the reality of Blended learning implementation. The tool was applied to a stratified sample consisting of 23 male and 73 female teachers during the first semester of the academic year 2021/2022, representing 32% of the study population. The study results showed that the reality of Blended learning implementation among upper elementary school teachers in Bethlehem and Hebron governorates was moderate with a mean score of 3.27. The results also revealed differences in the mean scores of Blended learning implementation between Bethlehem and Hebron governorates, due to the gender variable in favor of males. Furthermore, differences were due to the training courses variable in favor of teachers who received training courses. The results indicated no differences in the mean scores of Blended learning implementation due to the variables of academic qualification, years of experience, and governorate. Based on the conclusions the researchers recommend; the study plan should contain the use of blended learning during the semester, and conduct training courses for teachers in order to develop their employment and use of blended learning, and equip schools with the necessary technological techniques to employ blended learning, and conduct more studies and research on blended learning on other variables and other educational environments.
Effect of respiratory muscle strengthening with breathing exercises on ventilatory functions, aerobic fitness and their association with performance in elite rowers
Authors: Angage Dilani Priyashanthi Perera  , Anoja Ariyasinghe  , Anula Kariyawasam
Published: July 2023

This study aimed to investigate the effect of RMT on ventilatory parameters, aerobic fitness and rowing ergometer performance among professional rowers in Sri Lanka. Twenty national male rowers, aged 20-35 years were grouped randomly into an experimental (n=11) and a control (n=9) group. Prior to the study, baseline measurements of ventilatory functions, aerobic fitness (VO2max) and rowing performance were assessed by a portable spirometer, 2000m and 5000m rowing ergometer and Monark cycle ergometer respectively. Subsequently, rowers in the experimental group were prescribed a RMT program comprising of breathing exercises while control group was prescribed a general exercise program for a 12 weeks after which all the above parameters were assessed again. The association of rowing ergometer performance with the ventilatory functions and aerobic fitness was assessed by pearson correlation. There were significant improvements in PIF, FVC, and VO2max in the experimental group after 12-weeks (p<0.05) while only VO2 max improved non-significantly in the control group (p>0.05). Compared to the control, PIF improved significantly in the experimental group (p<0.05). The rowers in the experimental group with higher PIF and VO2max performed better at 2000m and 5000m ergometer whereas in the control group, only VO2max was associated with better performance in 5000m ergometer. This suggests that the RMT program had a significant effect in improving some ventilatory parameters and VO2max of the rowers resulting in better performance.
Assaying for the effectiveness and efficiency of some local plant extracts in the control of dairy farm-associated bacteria pathogens using in vitro well diffusion technique
Authors: Adeoye BA  , Labbo Z  , Ahmadu JH  , Makanjuola DO  , Egbulefu CS  , Obadare IG  , Mbochi CA  , Nyam PY  , Shanu MA  , Fadesire AK  , Olukotun GB
Published: July 2023

Though antimicrobial agents have been used for the effective control of infectious agents, there is a growing concern about the emergence and re-emergence of multidrug-resistant bacteria pathogens against commonly prescribed antibiotics. Consequently, there is gross reduction in the effectiveness of the control mechanism thereby increasing health care costs and its associated consequences. Plant parts and extracts have been used in crude forms for the local control of several ailments including those of animals. Two-phase research was set-up. One, to isolate and identify multi-drug bacteria pathogens from some small-scale farms in Kwali, FCT, Abuja and their drug resistance status. The second part was to screen and evaluate the antimicrobial effects of common phytochemicals from some local plants, viz; guava (Psidium guajava), ginger (Zingiber officinale), neem (Azadirachta indica), and moringa (Moringa oleifera) against the previously isolated MDR bacteria (Salmonella spp. Clostridium sp. Staphylococcus aureus, Streptococcus sp. and E. coli.). The aqueous, ethanolic and methanolic extracts of the plants were used for susceptibility test, minimum inhibitory concentration and minimum bactericidal concentrations using in vitro agar disc diffusion protocol based on the CLSI methods. The results showed significant Inhibitory zones range of 23-32mm. This is in agreement with several research previously done using plant extracts. The type of solvent used also influenced the quality of the extract and the output. Based on the results, we concluded that the plant extracts have some antimicrobial activities comparable to the currently prescribed modern drugs tested. It is justifiable that the therapeutic agents derived from these plants would be effective in the control of emerging diseases and also contribute to the growth of scientific knowledge about herbal medicines as important alternatives or complementary treatment of animal diseases. It is hereby recommended that further research (The third phase) carry out studies on the clinical efficacy trial, safety, toxicity and affordability analyses as well as optimization and upscaling parameters so as to proceed to the final step for the mass production of the tested products.
Physiochemical properties and Enzymatic profile of indigenous yeast isolated from palm wine in Nigeria
Authors: Chidimma Osilo  , Chinaza Vivian Okeke  , Chioma Peace Onyebuchi  , Nwanneka Nwozor
Published: July 2023

This study was aimed at investigating the physiochemical properties of fresh palm wine and enzymatic activities of indigenous yeast strains isolated from palm wine sample (Elaeis guineensis). The physiochemical properties was evaluated after 1h of tapping giving the following values 7.29a±0.02%, 2.25a±0.03%, 476.58d±0.04 mg/L and 5.2c±0.06 for ethanol, TTA, reducing sugar and pH respectively. The yeast strains was isolated and characterized based on their morphological, physiological, and biochemical characteristics. Two yeast cells were identified as Saccharomyces cerevisiae and Geotrichum candidum. They were screened for their ability to synthesize amylase and cellulase. Results revealed significant variation in the enzymatic profiles of the indigenous yeast strains. Cellulase activity was present suggesting the ability to break down cellulose; and a starch degrading ability indicated by amylase activity. All the yeast stains had good cellulase and amylase enzyme profile but YT3 which was identified as Geotrichum candidum exhibited the highest enzyme activity of 0.719U/ml (amylase) and 0.182U/ml (cellulase), suggesting their potential for efficient sugar utilization during fermentation. The findings from this study proved that indigenous microorganisms in palm wine can act as a source of enzymes especially cellulase and amylase; and the enzyme yield will most likely improve after optimization. The identification of yeast strains with enhanced enzymatic potential offers opportunities for the large-scale and industrial production of the enzyme.
Hypervirulent Klebsiella pneumoniae: Characteristic and clinical perspective
Authors: Ichsanto Permadi  , Tri Yudani M.Raras  , Sumarno Reto Prawiro
Published: July 2023

Background: Hypervirulent K. pneumoniae (hvKP). A virulent pathogen that has the ability to infect individuals in various age, has multiple ports of entry and cause infectious syndromes. Therefore urges an increase awareness and perspective on the characteristics and clinical feature of hvKP, to better understanding and providing appropriate treatment in cases of infection caused by hvKP. Main Text: Hypervirulent K. pneumoniae (hvKP) was first reported in Taiwan in 1986. This bacteria was responsible for liver abscess with septic endophthalmitis, of these cases some of patient have extrahepatic complications such as meningitis pneumonia, prostate abscess and pyogenic ophthalmia. There are several virulence factors hvKP such as, capsule as the main defensive factor, aerobactin provide iron supply and Colibactin can suppressing the activity of regulatory T lymphocyte cells, could improve survival hvKP by avoid the process of phagocytosis, complement, antimicrobial peptides and specific antibodies. The pathophysiology and clinical factors of hvKP showed similar symptom to conventional cKP except liver access and infectious syndrom. Conclusion: The threat of Hypervirulent K. pneumoniae (hvKP) increases worldwide due the virulence factors more vary compared to conventional cKP. Consequently, special measures such as vaccine need to be develop in order to eradicate this pathogen particularly among pediatric patient.
The effect of e-commerce, the use of accounting information systems and financial knowledge in decision making for entrepreneurship
Authors: Ida Ayu Rosa Dewinta  , I Putu Yudi Prabhadika
Published: July 2023

An entrepreneur is said to be able to compete in the business world when they are able to adapt to the changes that occur, including technological developments. The development of information technology in today's business world plays an important role for entrepreneurs in running and developing their businesses. This is because information technology provides convenience for transactions in an efficient and effective manner. The existence of information technology today has led to an increase in entrepreneurs utilizing and using information technology. This study aims to obtain evidence regarding the effect of e-commerce, the use of accounting information systems, and financial knowledge on decision-making for entrepreneurship. This research was conducted at Warmadewa University. The data collection method used in this study was a survey method with a questionnaire technique. The population in this study were accounting students at Bachelor Degree, Diploma Degree, and Associate Degree levels at Warmadewa University who have status as active students. The data used in this study is primary data obtained by distributing questionnaires directly to respondents using a purposive sampling technique. The data analysis used is multiple linear regression.
Effect of adding fermented shrimp waste extract in ration on metabolizable energy and nitrogen retention in laying hens
Authors: Abun Abun  , Roovi Maulana  , Kiki Haetami  , Deny Saefulhadjar
Published: July 2023

The study aims to determine and obtain the level of administration of fermented shrimp waste extract on the metabolizable energy value and nitrogen retention in laying hens of the production phase. The method used was experimental with complete randomized design and the effect of treatment using fingerprints with the Dunnet test. The treatment consists of five kinds with four repetitions, namely R0, the ration does not contain fermented shrimp waste extract; R1, ration contains 0.5% fermented shrimp waste extract; R2, ration contains 1% fermented shrimp waste extract; R3, the ration contains 1.5% fermented shrimp waste extract; R4, ration contains 2% fermented shrimp waste extract. The results showed that the addition of fermented shrimp waste extract as much as 1.5% resulted in the highest metabolizable energy value, and the addition of 1% resulted in the highest nitrogen retention value.
IoT-based monitoring, analysis and supervisory control of voltage harmonics in a three-phase system using four singles tuned lowpass filter
Authors: John Adrian F. De Guzman  , Kimberly Mae L. Leyson  , Bernard Gabriel C. Mendoza  , Gio Paulo R. Quezada  , Charles G. Juarizo
Published: July 2023

Total Harmonic Distortion is a vital part of communications, power distribution, and audio. In power distribution, it must be kept as low as possible. Voltage pollution occurs at the point of common coupling, which leads to a higher THD. Higher THD ensues thermal stress to the system where issues in the power system arise. Odd harmonic frequencies, specifically, the 5th, 7th, 11th, and 13th are the primary cause of the increase in THD. Several ways to reduce harmonics are the use of reactors, passive filters, and active front end solutions. This study is focused on minimizing the voltage harmonics by monitoring the voltage coming from a three-phase system by using four single-tuned filters that will tune out the unwanted harmful frequencies. The data will send through the IoT analytics platform which can then be viewed from ThingView, and the filters can be controlled through Arest.io. The system was compared to an oscilloscope then used Root-Mean-Square Error for system reliability test and yielded 0.097696 for data without filter and 0.048485 for data with a filter. Lastly, the system effectively decreased the THD by 32% compared to an unfiltered source.