bluuebunny/crossref_metadata_2025 huggingface dataset:
The Relationship between Foreign Direct Investments and EU Funding During the 2007–2013 Programming Period
Authors: Cywiński Łukasz
Published: October 2022

The review of economic literature indicates that the 2007–2013 programming period has not yet been completely analyzed in terms of the EU funds and stock of FDI. Moreover, previous studies omitted most of the EU funds because they focused mainly on structural funds and cohesion funds. The main question of this paper is organized around whether there is a positive relationship between the stock of FDI and specific EU funds. We use a panel of 27 EU countries to analyze fifty policy variables from the 2007–2013 programming period with panel linear regression models. In contrast to analysis of previous programming periods, the results did not indicate that there was a statistically significant relationship between structural or cohesion funds and the stock of FDI. The results indicate instead that ceteris paribus FDI stock is influenced by EU funds for preservation and management of natural resources and the media 2007 programme. And more specifically that EUR 100 million increase of funds for preservation and management of natural resources increased FDI stock by 1,01%–2,02%. A one million increase of funds for media 2007 related programs increased FDI stock by 3,36%–4,29%. Additionally, the results indicate that there is an interaction between GDP per capita and funds for the preservation of animal and plant health, and GDP per capita with funds for solidarity and management of migration flows. This research is a pilot study. According to the author’s knowledge this is the first analysis that takes into account all EU policy variables, and not just a selected few as well as the first study that analyses FDI and all EU funds during the 2007–2013 programming period.
Who Are the Tourists Booking Their Accommodations Online? A Segmentation Study of the Cracow Market
Authors: Kościółek Szczepan , Nessel Karolina , Wszendybył-Skulska Ewa , Kopera Sebastian
Published: October 2022

Internet and related technologies have revolutionized the distribution process in the accommodation sector, giving priority to big, online intermediaries, often at the expense of the direct booking channels of small and medium independent hotels. In order to regain their independency and flexibility in distribution strategy, hotel managers need to learn more about the profiles of contemporary online bookers visiting their region. This paper aims to contribute to the understanding of similarities and differences between consumers choosing among various online distribution channels for their tourist accommodations, and therefore help accommodation providers better manage their distribution and marketing strategies. The study is based on primary data that were collected among tourists in Cracow using a convenience sampling. The collected data was sorted, grouped and analyzed using basic statistical tools. The analysis led to determination of the size, as well as socio-demographic, and consumption features of four groups of tourists according to the online accommodation channel they used: booking.com, airbnb.com, other online channels, or online directly. The findings confirm the important role played by OTAs in the distribution of accommodation services, whereas the rate of direct online bookings recorded was lower than expected. Given the predominance of Booking.com in the market, its clients represent the typical customer in Cracow. Nevertheless, some differences among the four groups are observed in terms of age, travel party composition, first vs. repeat visitors, country of residence, length of stay, daily accommodation expenditure, and type of accommodation.
Entrepreneurial Activity, Market Orientation, Investment Attractiveness and Transaction Costs for Enterprises in Local Development Context
Authors: Pilewicz Tomasz , Derlukiewicz Niki , Mempel-Śnieżyk Anna , Zdon-Korzeniowska Małgorzata
Published: October 2022

The goal of the paper is to explore phenomena of entrepreneurial activities and market orientation of local governments, and also to identify a relation between these phenomena and investment attractiveness of local units and transaction costs for entrepreneurs and investors that authorities of local units might impact. We performed Boolean key word and subject term searches of selected scholar databases between 21 and 24 July 2017. It enabled us to identify less proliferated aspects of local development, which we deepened our knowledge of through systematic literature review aiming to reach the purpose of the paper. Entrepreneurial activities and the market approach of local units are widely explored in scientific research literature, but investment attractiveness of local units and their impact on transaction costs for enterprises are less represented. We present relations between investment attractiveness and transaction costs for enterprises with entrepreneurial activities and market orientation. There are actions local governments can undertake to impact investment attractiveness of local units and transaction costs for enterprises to stimulate the local development process. This work indicates the importance of increasing investment attractiveness of local units by local governments and lowering transaction costs for enterprises in the local development process.
Small Towns as Beneficiaries of EU Funds (the Example of Warmińsko-Mazurskie Voivodship)
Authors: Wojarska Magdalena , Kisiel Roman , Walendzik Emil
Published: October 2022

The objective of this study was to achieve a multidimensional description of the consumption of EU funds by small towns in Warmińsko-Mazurskie voivodship, and to identify the role of this source of funding in the development policy of these localities. The aim was pursued based on secondary data originating from the Local Data Bank of the Central Statistical Office and from the database of the Ministry of Investment and Economic Development (the EU Grants Map), as well as primary data collected during a survey study conducted among representatives of small towns and urban-rural municipalities which contain a small town in their limits (in total 38 units). The percentage of returned and correctly completed questionnaires was 44,74%. The empirical material gathered during the study proves that the budgets of municipalities in Warmińsko-Mazurskie Voivodship in 2006–2016 received PLN 3 244,24 million in the form of grants from the EU and other foreign support programmes, and the share of this sum absorbed by small towns and urban-rural municipalities was 25,91% (PLN 840,44 million), most of which was allocated to urban-rural municipalities (86,61%). Results of the U Mann-Whitney test showed that the distribution of the funds acquired by small towns and urban-rural municipalities with small towns in their limits, calculated per capita, in Warmińsko-Mazurskie Voivodship differed significantly from the sums of money invested by other administrative units of this type in Poland. The research also indicates that the EU funds played an important role in the development policy of small towns, and an opportunity to apply for EU grants had a strong influence on their investment plans.
Socio-Economic Determinants of the Development of Small Cities in the Berlin-Brandenburg Metropolitan Region
Authors: Dolata Michał
Published: October 2022

The identification of socio-economic determinants of the development of small urban centers functioning in the conditions of transformation and metropolization of space constitutes a significant research problem in the area of urban geography. In this study, the problem is discussed in the context of East Germany. The aim of the article is to characterize the most important contemporary determinants and factors influencing the development of small cities in the Berlin-Brandenburg Metropolitan Region. This characterization is based on analyses involving over 100 cities and refers to the spatial and population development of individual urban centers in the years 1990–2015. The research also used statistical material and spatial data sets published by official German national and regional institutions. In the course of the analyses, it was established that the conditions determining the development of small urban communes within the research area are very complex. This results from the overlapping of transformation determinants and factors universal for the whole area and the determinants resulting from the metropolization processes, whose nature and impact diversify in space.
The Attractiveness for Investments of Urban Municipalities in the Warmińsko-Mazurskie Voivodship
Authors: Świdyńska Natalia
Published: October 2022

This study has been carried out in order to identify determinants of potential investment attractiveness of urban municipalities. To this end, urban municipalities in the Warmińsko-Mazurskie Voivodship in Poland were submitted to analysis. The data, as of 2015, were obtained from the Bank of Local Data maintained by the Polish Central Statistical Office (GUS ). For each of the five microclimates which are expected to shape the level of potential investment attractiveness, a synthetic index that manifests a degree of the development of a given microclimate was calculated. The calculations relied on Hellwig’s development pattern method. A stepwise regression method was applied to identify the microclimates that most strongly influence potential investment attractiveness. The application of the above methods led to the construction of an equation which expresses the potential investment attractiveness of urban municipalities. The equation implicated that the level of potential investment attractiveness of an urban municipality depended significantly on the market of human resources, technical infrastructure, administration and market microclimates. The subsequent step was to determine the prospective development of the market microclimate. To achieve this purpose, a logistic function was applied. The results suggest that the level of development of market microclimate in most analyzed urban municipalities will be declining over the following six years.
Changes in the Level of Socio-Economic Development of Communes in the Lubelskie Voivodship
Authors: Jóźwik Jolanta , Gawrońska Grażyna
Published: October 2022

The paper presents an attempt of determination of changes in the level of socio-economic development of communes in the Lubelskie Voivodship. The variability of socio-economic development for 2005 and 2015 was determined based on the measure of development proposed by Hellwig. The research covered 193 communes, including 166 rural communes and 27 urban-rural communes. The source material was data for the local level (i.e., communes) obtained from the Local Data Bank of the Central Statistical Office. The research showed that the Lubelskie Voivodship is characterized by relatively high internal socio-economic variability. High level of development was usually obtained for urban-rural communes and communes neighboring on urban communes. The lowest level was determined for communes characterized by peripheral location. The large majority of communes represented a moderate level of socio-economic development. An increase in the general level of socio-economic development was observed in 2015 in comparison to 2005 in the majority of communes of the Lubelskie Voivodship.
Polarization of Rural Settlements in the Lubelskie Voivodship as a Result of Population Changes
Authors: Wesołowska Monika
Published: October 2022

Rural settlements, as a basic element of space, are dynamic structures subject to changes due to various factors determining the conditions of their development and functional transformations. Certain directions of changes occurring in rural areas are characteristic of each historical period. They are particularly evident in demographic and socio-cultural processes, in rural economies, and living conditions of residents. This article analyses population changes in rural areas of the Lubelskie Voivodship in the years 1950–2011. Strong polarization of settlements was observed. Considering the current trends, the author constructed two forecasts (short- and long-term) of transformations in the structure of rural settlements.
Inequalities of the Development of Polish-Ukrainian Transborder Regions
Authors: Pantyley Viktoriya , Kałamucka Wioletta , Łoboda Krzysztof
Published: October 2022

The purpose of the article is the estimation of the level of development of Polish-Ukrainian transborder regions, provision of an outline of problems and perspectives of their development, and of possible ways of solving such problems. The hypothesis states that the border line, on both the Ukrainian and Polish sides, is a powerful negative factor in the development of border regions. It is particularly visible on the Ukrainian side of the border. In order to delimitate the research area, the criterion of its location on counties (administration areas are named: in Poland — “poviat,” in Ukraine — “raion”) frame was applied. Therefore, for the transborder region, we consider administrative units located directly near the border: 9 counties of the Lubelskie and Podkarpackie voivodships for the Polish side, and 10 counties of 3 transborder regions in Ukraine (Lviv, Volyn, and Zakarpattia). For complex analysis of its development, we selected 9 diagnostic variables of sociodemographic, environmental, and economic development. In order to evaluate the level of development of transborder region, the synthetic index of its development was elaborated (Perkal index). The analysis of the spatial distribution of selected variables showed similarities in the development of Polish-Ukrainian transborder regions by environmental aspect, but significant differences in economic and sociodemographic depictions. In the context of the Perkal index, 4 classes of development of administrative units were elaborated. The worst situation regarding development was observed in the Volodymyr Volynskyi County with a level of development of -0,58. The best situation was observed in the case of the Bieszczadzki County with a level of development of 0,50. According to the authors, greater integration of Ukraine with the European Union, and active policy for activation of transborder regions could contribute to a reduction of differences in development of Polish-Ukrainian border regions.
Self-Selection Models in Determination of Target Dividend Payout Ratio of Real Estate Domestic Companies Quoted on the Warsaw Stock Exchange
Authors: Kowerski Mieczysław , Bielak Jarosław
Published: October 2022

Real estate companies listed on the Warsaw Stock Exchange in recent years have changed their policy to pro-dividend and more and more often make decisions to pay increasing dividends. Hence a question arises about the target dividend payout ratio of these companies. In the article the Heckman model was proposed for estimating the target dividend payout ratio. It derives from the self-selection concept, which consists of two equations: probit equation of propensity to pay dividend and Lintner’s partial adjustment equation. The conducted research has shown that Heckman’s self-selection model proved to be a very good tool for analyzing dividend decisions not only because of formal properties ensuring the consistency of the parameters estimator but also because of an accurate description of the decision process, which is of a two-step nature (decision on payment — determining the payout level). This led to the conclusion that more willing to pay dividends for a given year were real estate domestic companies, which paid dividends for the previous year (sticky dividend effect) and were more profitable and that the relation between the market value to book value of assets ratio (Tobin’s q ratio), and the propensity to pay dividends has an inverted U shape. The calculated target dividend payout ratio was 66,7% and the calculated speed of adjustment alpha = 0,626 indicates relatively slow reaching of the target.
Small and Medium Enterprise Investment Activity as a Factor of Development in a Tourist Region
Authors: Inglot-Brzęk Elżbieta , Lewandowska Anna
Published: October 2022

Small and Medium Enterprises (SMEs ) participate in the process of transformations occurring in their environment, which is manifested in their ongoing readiness to investment activity. The aim of this article was to identify relations between the SME investment and the development of tourist regions on the example of three spa and tourist communities. The analysis presented in this article is the result of CATI (with the tourist enterprises) and IDI (with leaders of tourism entrepreneurship) research. Data analysis was performed using statistical measures. The problems related to nature, sources, barriers and SME investment activity were analyzed.
Spatial Differentiation of Demographic Processes in Germany and Poland
Authors: Pastuszka Sławomir
Published: October 2022

The aim of this article is to compare demographic processes in German federal states and Polish voivodships. The analysis covers the period between 2004–2015 and takes into account the data published by Eurostat, the Federal Statistical Office and Poland’s Central Statistical Office. The analysis shows that demographic processes in German Länder are more dependent on their level of development and geographic location than in Polish regions. In Germany, the major demographic problems are seen in the less developed eastern Länder, whereas in Poland, unfavorable demographic changes occur in several voivodships of varying levels of development, located in different parts of the country. According to the author, in the case of demographic processes, unlike economic processes, at present there is no justification for clear-cut division of Eastern Poland, akin to Eastern Germany.
Structural Disparities in the Polish Economy: Regional Development
Authors: Wielki Janusz , Sytnik Inessa , Stopochkin Artem
Published: October 2022

The purpose of this study is to identify structural imbalances in the regional development of the Polish economy on the basis of the level and specifics of regional development analysis. In order to achieve this goal, the data from the Polish Central Statistics Office describing the labor market, and the demographic and economic situation in Poland have been utilized. The analysis period is 2005–2016. The heterogeneity of regional development generates a number of economic, social and political issues, the solution of which requires the formation of a fundamentally new sustainable development policy concept. Such a concept is supposed to be based on an integrated approach that takes into account the specifics of development each individual region in the country.
Dynamics of Economic Development Measure. Fiftieth Anniversary of Publication of the Article by Prof. Zdzisław Hellwig
Authors: Bielak Jarosław , Kowerski Mieczysław
Published: October 2022

2018 marked the 50th anniversary of publication in Przegląd Statystyczny journal of an article entitled: “Procedure of evaluating high level manpower data and typology of countries by means of the taxonomic method” written by prof. Zdzisław Hellwig. This article is one of the most frequently quoted articles published in Przegląd Statystyczny and is one of the most often quoted articles in Polish economic literature. More importantly, the number of quotations has been growing recently. The pattern of economic development method developed in the article was the first proposal of a method of linear ordering in the area of economic research. The method is still used and has become an inspiration for many methodological studies concerning multidimensional comparative analysis written since the 1970s. Apart from drawing attention to the “phenomenon” of prof. Hellwig’s publication and, in particular, its impact on the development of economic research in Poland, the main purpose of the study is presentation of the complex procedure of a dynamic approach to measuring development which integrates the issue of selection of diagnostic variables and comparability of Hellwig’s development measures from different periods. The proposed procedure was illustrated with an analysis of the standard of living of residents of Polish voivodships (NUTS 2) in 2005–2016.
A Quarter-Century Activity of the Committee of the Regions of the European Union
Authors: Przyborowska-Klimczak Anna
Published: October 2022

The Committee of the Regions was established on the basis of the Maastricht Treaty of 7 February 1992, and began operating in March 1994. It consists of representatives of regional and local authorities who have obtained electoral mandates from the communities they represent. The number of members of the Committee was set for individual Member States and it was assumed that its composition should not exceed 350 members. The organizational structure and principles of the Committee’s operation are set out in its Rules of Procedure. The Committee is an advisory body consulted by the European Parliament, the Council and the Commission. It prepares opinions as part of obligatory, optional and own-initiative procedures. It can also adopt resolutions and prepare reports, analyses and outlook opinions. The Committee has the right to bring cases before the Court of Justice of the European Union in order to protect its prerogatives and to apply the principles of subsidiarity and proportionality.
The Ontology of the Region
Authors: Andreasik Jan
Published: October 2022

In the paper, the conceptual apparatus (the ontology OntoReg) is presented for designing the Knowledge Based System (KBS ). An original methodology of designing an applied ontology has been developed on the basis of the concept of Roman Ingarden’s individual object as well as the concept of Rudolf Carnap’s constructional systems (Aufbau). According to the procedure of creating an applied ontology, the original ontology of the region (OntoReg) has been developed, with particular emphasis on the characteristics of the region with the distinction of properties at three levels of the constructional system. At the first level, absolutely own properties, acquired properties and externally conditioned properties are distinguished. At the second level, positive states of objects (potentials of the region: geographical potential, social potential, innovative potential, institutional potential) and negative states of objects (risk of implementing the regional development strategy: project implementation risk, environmental risk, institutional risk, public health and safety risk) are defined. At the third level, the indicators of the respective types of potential and risk are considered. The relative characteristics of the comparative assessment between the indicator values for a given potential/risk and a reference value established in scientific research are determined. Determining the relative properties constitutes new knowledge generated due to the ontology constructed.
SYNTHESIS OF CALIXARENE DERIVATIVES
Authors:   Le Quy Don Technical Universit, Vu Ngoc Doan
Published: October 2022

Accidents in the nuclear industry andnuclear terrorist attacks renderthe development of new decontamination strategies critical. Scientists haverecently conductedintensive studieson p-tert-butylcalix[6]areneand its derivatives because of their ability to form complex with radioactive substances. This articlepresents the synthesis ofcompounds2,4,6-triethylester-1,3,5-trimethoxy-p-tert-butylcalix[6]arene and 1,3,5-trimethoxy-2,4,6-tri (carboxylicacid)-p-tert-butylcalix[6]arene. This synthesiswas based onthe Williamson reaction using potassium carbonate as base. The structures of the synthesized compounds were determined by adopting IR, MS, 1H-NMR, 13C-NMR databases.
INVESTIGATION ON THE CONSTRUCTION OF THE RECEIVED SIGNAL MODEL FOR MULTI-RECEIVER SYNTHETIC APERTURE SONAR IN VIETNAM’S SEA
Authors:   Le Quy Don Technical University, Nguyen Dinh Tinh
Published: October 2022

In this article,the received signal models are constructed for multi-receiver synthetic aperture sonar (SAS) using CW pulses and LFM pulses when considering the change of acoustic velocity in seawater and the Doppler effect. With a more complete description of the physical processes than the traditional models and the mathematical representation of signals, the proposed model can provide data sets for the research and thedevelopment of SAS imaging algorithms to save time and cost in actual data collection. The simulation results illustrate the characteristics of the signals generated from the proposed model with real data of acoustic velocity in Vietnam’s sea.
AN ALGERAIC TRANSFORMATION METHOD TO SOLVING EQUATIONS IN THE EXTENDED GALOIS FIELD
Authors:   Le Quy Don Technical University, Pham Khac Hoan
Published: October 2022

Thisarticle proposes a method to solve cubic and quartic equations over finite fields using its algebraic transformations on quadratic equations. The obtained results can be generalized to solve equations over finite fields of any size and at the same time allow to reduce the complexity and processing delay significantly compared to traditional methods, so that it can be applied in high-speed communication systems.
Major livestock health constraints and veterinary service delivery system in Arbegona, district of Sidama Region, Ethiopia
Authors: Fitsum Tessema  , Dinku Negash
Published: October 2022

A study was conducted in 2019 G.C in Sidama Region, Arbegona woreda to identify existing constraints of livestock health and veterinary service delivery system to recommend intervention strategies for sustainable improvement of animal health service delivery. Data were collected by using pre-tested questionnaires, focus group discussion, retrospective data from woreda and observation of infrastructures. The result showed that Mastitis, Ovine Pasteurellosis and Newcastle diseases were the first ranked diseases of cattle, sheep and poultry, respectively in the study area. Most veterinary service delivery centers lacked appropriate facilities to restrain and handle clinical cases and they were not well equipped. 95% of the clinical cases were diagnosed only based on the clinical signs or history alone. Based on veterinarian’s response, shortage of diagnostic and treatment materials including drugs (100%), lack of drug handling and storage room (75.5%) and budget shortage (42.8%) were management related problems while home service need of farmers (85.7%) and less interest of farmers in paid vaccination (64.3%) were farmers’ related constraints. Whereas lack of commitment were the veterinarian related constraints raised by veterinarians themselves. The five years annual budget allocation was very low compared to the planned budget every year in government veterinary clinic. Fulfilling the necessary equipments for diagnosis and treatment, controlling smugglers, crush development in each kebele, awareness creation for farmers and capacity building of animal health assistants could help in improving the livestock health problems and quality of veterinary service delivery system in the district.
Mutualistic relationship of the Agaonidae Family (Insecta: Hymenoptera) with Ficus sp. (Moraceae) contributing to diversity and sustainability in tropical forests
Authors: Carlos Henrique Marchiori
Published: October 2022

Species of the Family Agaonidae are associated with the genus Ficus , as the species of the subfamily Agaoninae behave as pollinators, while the other species are mainly parasites of pollinators or gall formers from other parts of the fig. The male's life cycle is exhausted inside the fig tree's syconium: its role is to mate with the female and, therefore, with its robust jaws, open an exit for her (it is the opposite of what happens among the Strepsiptera, in which the female never leaves the host). Once fertilized, the female will leave the host fig to lay eggs in other figs, thus completing pollination. The objective of this paper is to survey the biology, bionomy and taxonomy of the Agoanidae Family (Hymenoptera). To this end, a bibliographic survey of Agaonidae was carried out in the years 1916 to 2021. Only complete articles published in scientific journals and expanded abstracts presented at national and international scientific events. Data were also obtained from platforms such as: Academia.edu, Frontiers, Qeios, Pubmed, Biological Abstract, Publons, Dialnet, World, Wide Science, Springer, RefSeek, Microsoft Academic, Science and ERIC.
Educational leadership styles and its relationship to job satisfaction among secondary school teachers Hafar Al- Batin Governorate
Authors:   Email: Aln251@hotmail.com|| Hafr Al- Batin Governorate|| KSA, Ghalab Sari Almutairi Alnairah
Published: October 2022

The current study aimed to reveal the patterns of educational leadership and its relationship to job satisfaction among secondary school teachers in Hafr Al- Batin Governorate. Al- Batin, and the results of the study showed that the degree of practice of secondary school principals in Hafr Al- Batin governorate of educational leadership styles from the teachers’ point of view; It came with an arithmetic average (2.88 out of 5), i.e. with a (medium) degree of practice. At the level of the domains, the democratic pattern got an average (3.75), i.e. with a (high) practice degree; Then the dictatorship with an average of (2.55), And third: The Chaotic pattern with an average of (2.32), both of which are at a (low) degree, and the level of job satisfaction of the female teachers from their point of view; It came with an average of (3.62 out of 5), with a (high) level of satisfaction. It also found a direct (positive) relationship between the democratic leadership style and the level of job satisfaction, and an inverse (negative) relationship between the two leadership styles (dictatorship and chaotic), and the level of job satisfaction, and in light of Results The researcher recommended applying the proposals that contribute to enhancing the practice of educational leadership styles of secondary school principals in Hafr Al- Batin Governorate. This helps in developing job satisfaction among teachers. Keywords: Leadership styles, educational leadership, job satisfaction, secondary schools in Hafr Al- Batin Governorate الملخص بالعربية: الملخص: هدفت الدراسة الحالية إلى الكشف عن أنماط القيادة التربوية وعلاقتها بالرضا الوظيفي لدى معلمات المرحلة الثانوية في محافظة حفر الباطن، واستخدمت الباحثة المنهج الوصفي بأسلوبيه (المسحي، والارتباطي)، وتمثلت الأداة في استبانة تم توزيعها على عينة بلغت (297) معلمة بالمدارس الثانوية في محافظة حفر الباطن، وبينت نتائج الدراسة أن درجة ممارسة مديرات المدارس الثانوية في محافظة حفر الباطن لأنماط القيادة التربوية من وجهة نظر المعلمات؛ جاءت بمتوسط حسابي (2.88 من5)، أي بدرجة ممارسة (متوسطة) وعلى مستوى المجالات؛ حصل النمط الديمقراطي على أعلى متوسط (3.75) أي بدرجة ممارسة (عالية)؛ ثم الديكتاتوري بمتوسط (2.55)، وثالثاً: النمط التسيبي بمتوسط (2.32)، وكلاهما بدرجة (متدنية) كما أن مستوى الرضا الوظيفي لدى المعلمات من وجهة نظرهن؛ جاء بمتوسط (3.62 من5)، أي بمستوى رضا (عالٍ)، كما توصلت إلى وجود علاقة طردية (موجبة) بين نمط القيادة الديمقراطي ومستوى الرضا الوظيفي، وعلاقة عكسية (سالبة) بين نمطي القيادة (الديكتاتوري والتسيبي)، ومستوى الرضا الوظيفي، وفي ضوء النتائج أوصت الباحثة بتطبيق المقترحات التي تسهم في تعزيز ممارسة أنماط مديرات المدارس الثانوية في محافظة حفر الباطن لأنماط القيادة التربوية؛ بما يساعد في تنمية الرضا الوظيفي لدى المعلمات. الكلمات المفتاحية: أنماط القيادة، القيادة التربوية، الرضا الوظيفي، مدارس المرحلة الثانوية، محافظة حفر الباطن.
SPECTROPHOTOMETRIC ESTIMATION OF TOTAL ALKALOIDS IN CHITRAKA (PLUMBAGO ZEYLANICA LINN) USING BROMOCRESOL GREEN
Authors: Salma Tarannum
Published: October 2022

Background: Plumbago zeylanica L. (Plumbaginaceae) commonly known, as Chitraka is pharmacologically important plant. Various studies have been undertaken to assess the pharmacological potential of different parts of the plant namely like roots, stem, flower, and leaves as antimicrobial, hepatoprotective, anticancer, antifertility, antiulcer, antifungal and wound healing. Chitraka is rich in alkaloids hence present study is taken. Objective: The objective of the present study was to determine the total alkaloid content in Chitraka Materials & Methods: The presence of alkaloids was confirmed by qualitative dragendroffs method subjected to quantification, the total alkaloid content (TAC) was estimated spectrophotometric ally using Bromocresol green method with Atropine as standard. Results: The results showed that root of Chitraka are rich source of alkaloids. The root extract of chitraka showed highest alkaloid content 83.4mg/g Atropine equivalent. Conclusion: The total alkaloid content of Chitraka was well established by spectrophotometric studies. And it is direct, simple & sensitive spectrophotometric method for determination of total alkaloid based on the reaction with Bromocresol green
QUANTIFICATION OF TOTAL PHENOLIC AND TOTAL ALKALOIDS IN SIMAROUBA GLAUCA LEAF EXTRACT
Authors: B.M Dr Khalid , Rao Mudaganti Ram Krishna
Published: October 2022

Background: Simarouba glauca is well known as paradise tree in India and other parts of world, Simarouba glauca rich in a variety of secondary metabolites such as tannin, terpenoids, alkaloids, flavonoids, phenols, steroids, glycosides and volatile oils. Simarouba glauca leaf can increase the quality of life in cancer patients it is having very good antibacterial and anti-tumorous properties and it is used as compliment modern care treatment Aims & Objectives: Quantitative determination of total phenols and total alkaloids in Simarouba glauca Leaf. Study Setting: ACRL SJGAMC&H Koppal. The Presence of phenols of tested by 5% Fecl3 Test and taken Quantification by using spectrophotometer method, presence of alkaloids tested by Drangendroffs test and quantification done by Harbone Method. Results: Results revealed that total phenolic content in Simarouba glauca leaf is 5.203 in terms of Gallic acid equivalent, and total alkaloids 73.4 mg/g in leaf of Simarouba glauca. Conclusion: The qualitative analysis of the leaf extract of Simarouba glauca reveals the presence of medicinally valued bio active components in leaf, higher content of Alkaloids, and phenols are present.
Quality management of transport engineering constructions in Vietnam - responsibilities and obligations of related parties
Authors:   Vinh University, Nghe An, Viet Nam, Thi Thu Hang NGUYEN
Published: October 2022

Management of transport engineering construction quality is a very serious problem in need of attention in Vietnam today. This determines the quality, progress and cost of construction of works. This article deals with the responsibilities, obligations, and coordination of the relevant parties, including owner, contractor, design consultant, and construction supervision consultant in the field of transport engineering construction quality.
Discourse markers with the function of addition in the work "Gone with the Wind" and the Vietnamese translation “Cuốn theo chiều gió
Authors:   College of Economics and Technology of HCMC, Ngoc Diem PHAM
Published: October 2022

Discourse markers (DMs) appear with high frequency in English communication. In terms of influence, DMs play a very important role in language, especially in dialogues. Apart from the function of linking, DMs also conveymany different implications in the different context in which they are used. With the scope of this article, we present an overview of the discourse markers and analyze discourse markers such as and, but, now with the function of addition. Since then, the article compares these DMs in the work Gone with the Wind with translation equivalents in the conversations of the characters in Cuốn theo chiều gió. By analyzing the context in which the DMs are used, we want to find out the similarities and differences in translating these DMs in the conversation text between English and Vietnamese.
Bone density and some related factors in postmenopausal women
Authors:   Institute of Agricultural Science and Technology in the North Central region, Thi Minh Hien DAO , Dinh Quang TRAN ,   Vinh University, Nghe An, Viet Nam
Published: October 2022

Through measuring the bone density with quantitative ultrasound methods in the Polyclinic Examination Room, Vinh Medical University, Nghe An, the present study examined the bone density and factors related to bone density of 203 postmenopausal women. The results show that 23.2% of menopausal women studied has normal bone density; 51.7% has a decrease in bone density and 25.1% has osteoporosis; the higher the age of postmenopausal women, the bone density decreases, the osteoporosis rate increases (osteoporosis ratio of 42.6% at age 70 or older); the longer the time of menopause, the bone density decreases (8.1% for up to 5 years of postmenopause, 25.7% for 5-10 years of postmenopause and 38.6% for over 10 years of postmenopause).
Application of Bernoulli's law to check the limit value of converting coefficient of wind energy and wind turbine power
Authors:   Institute of Engineering and Technology, Vinh University, Van Phuc LUU
Published: October 2022

This paper presents an application of Bernoulli's law to check the Betz coefficient (the limit value of converting from wind energy to rotational kinetic energy of wind turbine). The calculation method is based on the principle of conservation of mass, conservation of energy, and the relationship between the pressure and speed of air flow moving through a turbine, which is placed in a flow tube. The results show that the limit value of conversion from wind energy to rotational kinetic energy of turbine obtained by our method is consistent with the Betz value published previously.
Study color sensitivity on dyed Poly(vinyl alcohol) film irradiated with gamma rays
Authors:   Institute of Nuclear Science and Engineering, Thi Anh VO , Van Giap TRINH ,   Institute of Nuclear Science and Engineering, Dai Nghiep TRAN ,   Institute of Nuclear Science and Engineering, Thanh Cong NGUYEN ,   Vinh University, Nghe An, Viet Nam
Published: October 2022

The Polyvinyl Alcohol (PVA) films dyed with different colors such as methylene blue (MB/PVA), methyl orange (MO/PVA), methyl red (MR/PVA) and crystal violet (CV/PVA) were investigated. The dyed PVA films were decolored by gamma radiation. So that, they were made dosimetries for high-dose control of the gamma source. We used Co60 -source in dose range of 0-150 kGy for studying decoloration of the dyed PVA films. The optical density change in these films at pre and post irradiation was studied by UV-VIS spectrophotometer. The color sensitivity on the dyed PVA films irradiated -source with difference colors was difference. The results shown that the MB/PVA films have the highest sensitivity in studied dose range.
Modeling and analysic of MEMS capacitive pressure sensor using graphene membrane
Authors:   Vinh University, Nghe An, Viet Nam, Thi Minh NGUYEN
Published: October 2022

Micro electromechanical systems (MEMS) based capacitive pressure sensor for ultral-low pressure using graphene has been proposed. The characteristics of sensor such as membrane displacement, capacitance and sensitivity of sensor with external pressure effect are simulated and analyzed using Comsol Multiphysics software. The obtained results show that the MEMS capacitive pressure sensor using 3, 5, 7-layer graphene exhibits the sensitivity of 230.8 aF/Pa, 174.4 aF/Pa and 144.4 aF/Pa, respectively.
Anti-sway of crane’s cable by damping control of semi-active damper
Authors:   Vinh University, Nghe An, Viet Nam, Trong Kien NGUYEN , Duc Viet LA ,   Institute of Mechanics, Vietnam Academy of Science and Technology, Ba Nghi NGUYEN ,   Institute of Mechanics, Vietnam Academy of Science and Technology, Thi Thanh Tung NGUYEN ,   Vinh University, Nghe An, Viet Nam
Published: October 2022

One of the solutions to reduce the sway oscillation motion of crane' cables is to use a passive damper. The application of this method is simple but limited in the insufficient flexibility to prevent adverse movements and to amplify the favorable ones. This paper proposes an on-off damping controller of semi-active damper to improve the passive damper. The aim of the on-off damping control is to amplify the radial motion of damper to increase the energy dissipated, then reduce the sway motion. The effectiveness of proposed controller are verified by numerical simulations of a 2D crane.
Investigation of pre-engineered steel buildings according to deformation systems considering semi-rigid connection
Authors:   Faculty of Civil Engineering, Vinh University, Trong Ha NGUYEN , Thanh Hai LE ,   Faculty of Civil Engineering, Vinh University, Thi Hao CAO ,   Faculty of Civil Engineering, Vinh University
Published: October 2022

This research is for investigating the pre-engineered steel buildings according to deformation systems considering semi-rigid connection, which is considered as a correct model. Semi-rigid connection was proposed by Aleksander. K, in which the value of semi-rigid joint is dependent on connection types, material and section details. In this research, the deformation systems were analyzed using second order effects (P- effects) by Sap2000. P- effects and semi-rigid connection were simultaneously combined in evaluating the internal forces and displacement of the structure. In order to evaluate the accuracy of the current research method, the results were then compared with those designed by the current Vietnamese standard. The results show that the combination of P- effect and semi rigid connection have great effect in calculate the pre-engineered steel structures compared with other models.
Research on livelihood vulnerability of fishermen in the context of climate change - a case study in Huong Phong Commune, Huong Tra Town, Thua Thien Hue Province, Vietnam
Authors:   Institute of Agriculture and Natural Resources, Vinh University, Thi Huong Giang NGUYEN , Dung Ha HOANG ,   University of Agriculture and Forestry, Hue University, Thien Thanh HO ,   University of Agriculture and Forestry, Hue University, Quang Tan NGUYEN ,   Okayama University, Japan
Published: October 2022

This study used the Livelihood Vulnerability Index (LVI) as a method for assessing relative vulnerability of communities to climate change impact. This index consists of seven main components including: socio-demographic profile, livelihood strategies, social networks, health, food, water and natural disasters-climate. Each was made up of several indicators or sub-components. The research was based on the average values of the major components in the LVI to provide the LVI - IPCC that is formed from three elements, including: exposure, adaptability and sensitivity. Data were collected through interview 145 fishermen in Huong Phong Commune, Huong Tra District, Thua Thien Hue Province. The results showed that the LVI - IPCC at the study case is 0.017, which means that the vulnerability of locals under climate change impact is pretty high. In addition, the study also pointed out that the exposure to the impact of climate change in the locality is almost high, reaching at 0.473. However, the results found that the sensitivity was moderate and the adaptability to climate change was fairly good, whose values were recorded at 0.136 and 0.306, respectively.
, Dynamics of a stochastic epidemic model with Markov switching and general incidence rate
Authors:   School of Natural Sciences Education, Vinh University, Thanh Dieu NGUYEN , Duc Toan NGUYEN ,   High School for Gifted Students, Vinh University, Thi Hai Ha VUONG ,   Fundametal Sciences Faculty, Vinh Medical University
Published: October 2022

In this paper, the stochastic SIR epidemic model with Markov switching and general incidence rate is investigated. We classify the model by introducing a threshold value λ. To be more specific, we show that if λ < 0 then the disease-free is globally asymptotic stable i.e., the disease will eventually disappear while the epidemic is strongly stochastically permanent provided that λ > 0. We also give some of numerical examples to illustrate our results.
Molecular characteristic analsis of non-small cell lung cancer patients at Nghe An Oncology Hospital
Authors:   Nghe An Oncology Hospital, Quang Trung NGUYEN , Thi Thuy Le NGUYEN ,   Nghe An Oncology Hospital, Duc Hung TRAN ,   Nghe An Oncology Hospital, Thi To Trinh NGO ,   Vinh University, Nghe An, Viet Nam, Thi Quynh Trang VO ,   Vinh University, 182 Le Duan Street, Vinh City, Vietnam, Thi Giang An NGUYEN ,   Vinh University, 182 Le Duan Street, Vinh City, Vietnam.
Published: October 2022

By conducting the study on 109 non-small cell lung cancer (NSCLC) patients at the Nghe An Oncology Hospital, we found that EGFR gene mutation is a cause of NSCLC. The average age of patients is 63.8 ± 10.6. 96.33% of all the patients have Adenocarcinoma. Using Scorpion ARMS technique for EGFR mutation identification, we found the rate of patients carrying the gene mutation was 40.37%. 55.96% of the patients are male (27.87% of those have gene mutation), 44.04% are female (56.25% of those have gene mutation). In all patients with gene mutations, 54.55% of patients carry LREA and L747-P753 delinsS mutation at exon 19. The rate of patients with the L858R gene mutation at exon 21 is 29.55%; the rate of double mutation at exon 19 and 20, 18 and 20, 18 and 21 is 9.09%. 15.91% of patients have targeted-drug-resistant gene mutation.
Analysis of the strength and break state of anisotropic coal in indirect tensile test
Authors:   University of Electricity, Viet Thuc CHU
Published: October 2022

The article is to perform the results of the indirect tensile test with two combination samples of dim coal (peat) which has the anisotropic angle of α = 00 and α = 900. The results showed that the tensile strength in both cases above was anisotropy. However, the case of α = 900 has the anisotropic angle larger than the case of α = 00, or in another word, the featured anisotropic tensile strength depends on the angle which was created by bedding and loading direction.
Regulations on investment incentives in the agricultural sector - limitations and suggestions
Authors:   Dong Thap University, Cao Lanh City, Dong Thap, Thi Tuyet Giang PHAM
Published: October 2022

Vietnam is a country with strength in agricultural development and its agricultural production not only meets the food demand of the whole country, but also serves the export, contributing to the state budget. In order to develop the Vietnam's agricultural sector sustainably and be competitive in the international agricultural market, it is necessary to have a large investment in this area. Regulations on investment incentives in the agricultural sector plays an important role in attracting private investment to develop this sector. However, current regulations on investment incentives have revealed many limitations and inadequacies which can lead to obstacles in attracting investment in this field. This paper deeply analyzes the limitations and inconsistencies of Vietnam’s regulations on investment incentives in the agricultural sector, and makes some suggestions to improve its investment incentive regulations.
Educational cooperation between the Russian Federation and Vietnam (2001 - 2015)
Authors:   Institute of Social Pedagogy, Vinh University, Thi Ha NGUYEN , Thi Cam Van PHAN ,   Institute of Social Pedagogy, Vinh University
Published: October 2022

Educational cooperation has always played an important role in relations between the Russian Federation and Vietnam since both sides established diplomatic relations. The paper presents educational cooperation between the two countries of the Russian Federation and Vietnam in the period between 2001 and 2015 based on the signing of many agreements on the field of education. In addition to maintaining a traditional relationship, the two countries have also developed cooperation in new areas to enhance educational cooperation to meet the comprehensive strategic partnership between the two countries. Beside achievements in educational cooperation, the paper states the potentiality for expanding and developing educational cooperation between the two countries of the Russian Federation and Vietnam.