bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effectiveness of Probing-Prompting Learning Model using Google Meet Platform on Student's Mathematical Communication Ability
Authors: Aisyah Siti , Sari Dwi Ivayana , Faulina Ria
Published: March 2022

The purpose of this study was to determine whether the probing-prompting learning model using the google meet platform was effective in improving students' mathematical communication and to find out whether the mathematical communication of students taught by the probing-prompting learning model is higher than the mathematical communication of students taught by conventional learning. The method used is a quantitative research type of experiment. The population in this study were all seventh grade students of SMP Negeri 1 Socah, while the samples in this study were class VII-A as the experimental class and VII-B as the control class. This research was conducted from April to July 2021. The instrument used is an observation sheet on the teacher's ability to manage learning with a probing-prompting learning model using the google meet platform, observation sheet on students' mathematical communication skills taught using the probing-prompting learning model using the google meet platform, as well as pretest and posttest sheets. The effective aspect is shown by the average observation result of the teacher's ability to manage learning with the probing-prompting learning model using the google meet platform of 3.6 which is in the very good category; the average observation result of students' mathematical communication skills who were taught using the probing-prompting learning model using the google meet platform was 62.47% in the high category; and completeness of student learning by 100%. Based on the results of the independent sample t-test, the mathematical communication of students who were taught using the probing-prompting learning model using the google meet platform was higher than the mathematical communication of students who were taught using conventional learning.

 Keywords: Probing-Prompting Learning Model, Google Meet, Mathematical Communication.
ANÁLISE ESPACIAL DA DISTRIBUIÇÃO DO ENSINO EM FUNÇÃO DA RENDA EM UMA BACIA HIDROGRÁFICA
Authors: Costa Abreu Sales Jomil , Vasconcelos Silva Camille , Collins da Cunha e Silva Darllan , Bitar Omar Yazbek , Wagner Lourenço Roberto
Published: March 2022

O presente trabalho tem como objetivo analisar a relação da distribuição espacial dos indicadores de escolaridade em função da renda per capita dos setores censitários da Bacia Hidrográfica do Rio Una (BHRU), localizado no município de Ibiúna-SP. Para isso foram utilizadas técnicas de geoestatística, como estimação de Krigagem Ordinária, teste de Kernel, para avaliar a distribuição da renda e a densidade das escolas juntamente com dados do Censo Demográfico de 2010. De acordo com o teste de Pearson, houve correlação das taxas de escolaridade e renda apenas entre a população com mais de 20 anos. Demonstrando que, quanto menor a renda menor o nível de escolaridade da população, coincidindo a distribuição das áreas de menor renda e escolaridade com as áreas de maior vocação agrícola. Portanto, podemos concluir que conhecer o potencial da distribuição da educação em função da renda é uma ferramenta importante para políticas públicas e sociais.
Palavras-chave: escolaridade; krigagem; distribuição espacial; sistemas de informações geográficas.
 
Spatial analysis of education distribution concerning a watershed money income
 
ABSTRACT: The current study aims to analyze the spatial distribution relationship among schooling indexes, considering the money income of census tracts of the watershed Una river, which is located at Ibiuna, municipality of São Paulo state. The 2010 Population Census and the Ordinary Kriging were used as geostatistical analysis. Kernel test was applied to evaluate schools density. Pearson test demonstrated a correlation between schooling rates and money income on the population older than 20 years, showing that, the smaller the income, the smaller are the schooling levels. Associated with that, the area distribution of the smallest schooling levels are the same with the biggest agricultural vocation. Therefore, in conclusion, understanding the schooling distribution potential in relation to the income is an important management tool for public and social policies.
Keywords: schooling; kriging; spatial distribution; geographic information systems.
NUTRITIONAL STATUS AND PRODUCTION OF ‘PRATA-ANÃ’ (AAB) AND ‘BRS PLATINA’ (AAAB) BANANA PLANTS WITH ORGANIC FERTILIZATION
Authors: Marques Pedro Ricardo Rocha , Donato Sergio Luiz Rodrigues , São José Abel Rebouças , Rosa Raul Castro Carriello , Arantes Alessandro de Magalhães
Published: March 2022

The objective of this research was to evaluate the nutritional status and yield of ‘Prata’ bananas fertilized with different sources for organic management applied to soils with improved fertility. Two cultivars (‘Prata-Anã’ and ‘BRS Platina’), five annual potassium rates (0, 200, 400, 600, and 800 kg ha-1 of K2O) supplied by bovine manure and rock powder, and six evaluation periods (210, 390, 570, 750, 930, and 1.110 days after transplanting – DAT) were laid out in a randomized block design, in a 2 x 5 x 6 factorial arrangement with three replicates. The yield was determined over three cycles. The levels of K and S in leaves increased with increasing rates of K2O interacting with the evaluation periods. The levels of N, P, and Cu increased with increasing rates of K2O. High soil fertility and manure and rock powder applications were not enough to maintain appropriate levels of leaf Mn in ‘Prata-Anã’. The levels of leaf K, S, Cu, and Zn in the cultivar Prata-Anã differed from those of the ‘BRS Platina’. Applying manure and rock powder as organic fertilizers did not increase the yield of ‘Prata-Anã’ and ‘BRS Platina’ banana plants grown on soils with improved fertility during four production cycles.
Keywords: Musa spp.; leaf tissue analysis; yield.
 
Estado nutricional e produção de bananeiras ‘Prata-anã’ (AAB) e ‘BRS Platina’ (AAAB) com fertilização orgânica
 
RESUMO: Objetivou-se esta pesquisa avaliar o estado nutricional e o rendimento de bananeiras 'Prata' com diferentes fontes de fertilização para manejo orgânico em solos com fertilidade melhorada. Duas cultivares ('Prata-Anã' e 'BRS Platina'), cinco doses anuais de potássio (0, 200, 400, 600 e 800 kg ha-1 de K2O) fornecidas por meio de esterco bovino e pó de rocha, e seis períodos (210, 390, 570, 750, 930 e 1.110 dias após o transplantio), distribuídos em delineamento de blocos ao acaso, em esquema fatorial 2 x 5 x 6 com três repetições. O rendimento foi determinado por três ciclos. Os teores de K e S nas folhas aumentaram com aumento das taxas de K2O em interação com os períodos de avaliação. Os níveis de N, P e Cu aumentaram com o aumento das doses de K2O. A alta fertilidade do solo e as aplicações de esterco e pó de rocha não são suficientes para manter os níveis adequados de Mn em ‘Prata-Anã’. Os teores de K, S, Cu e Zn na cultivar Prata-Anã diferem de ‘BRS Platina’. O esterco e o pó de rocha como fertilizantes orgânicos não aumentam o rendimento das bananeiras ‘Prata’ cultivadas em solos com fertilidade melhorada durante quatro ciclos de produção.
Palavras-chave: Musa spp.; análise de tecido foliar; rendimento.
MODELAGEM PROBABILÍSTICA DE PREÇOS MÁXIMOS DA COMMODITY BOI GORDO PARA O ESTADO DE SÃO PAULO
Authors: Lucca Filho Eduardo Lucca Filho , Liska Gilberto Rodrigues , Santos Jerônimo Alves , Matiussi Ana Carolina
Published: March 2022

No cenário econômico, estudar o comportamento de preços de produtos, commodities ou indicadores torna possível a realização de previsões, permitindo elaboração de projeções de risco com maior precisão e, quando ocorrem eventos extremos desses preços, perdas, ou até mesmo falências podem ocorrer. Nesse sentido, a Teoria de Valores Extremos (TVE) trata de maneira adequada tais fenômenos. Foram utilizados os dados econômicos do CEPEA - ESALQ compreendida entre o período de 1997 a 2020, organizados em séries de máximos mensais e, para cada série, as distribuições Gumbel, Generalizada de Valores Extremos (GVE) e suas versões não-estacionárias foram consideradas. Pôde-se constatar que as distribuições Gumbel e GVE se ajustaram em todos os meses e os indicadores de qualidade de ajuste atestam que a distribuição Gumbel é a mais adequada em todos os meses. Nos meses de abril a outubro existe uma ligeira menor probabilidade dos preços serem superados e nos meses de novembro a fevereiro são os meses com maior probabilidade de ocorrência de altos preços de boi gordo. Pelo teste de Mann-Kendall constatou-se tendência em todas as séries, a qual foi incorporada na distribuição Gumbel não-estacionária, e o teste de razão de verossimilhanças e AIC mostraram-se favoráveis quanto à modelagem da tendência.
Palavras-chave: planejamento rural; economia aplicada; distribuição Gumbel; valor de retorno; estatística aplicada.
 
Probabilistic modeling of maximum commodity fat ox prices
for the state of São Paulo
 
ABSTRACT: In the economic scenario, studying the behavior of prices of products, commodities or indicators makes it possible to make forecasts, allowing the elaboration of risk projections with greater precision and, when extreme events of these prices occur, losses or even bankruptcies can occur. In this sense, the Extreme Value Theory (EVT) is more suitable such phenomena. Economic data from CEPEA - ESALQ covering the period from 1997 to 2020 were used, organized in series of monthly maximums and, for each series, the Gumbel, Generalized Extreme Values ​​(GVE) distributions and their non-stationary versions were considered. It could be seen that the Gumbel and GVE distributions fit in every month and the goodness-of-fit attest that the Gumbel distribution is the most suitable in every month. In the months of April to October there is a slight lower probability of prices being exceeded and in the months of November to February are the months with the highest probability of occurrence of high fat ox prices. The Mann-Kendall test was used for testing the trend in all series, which was incorporated into the non-stationary Gumbel distribution, and the likelihood ratio test and AIC were favorable in terms of trend modeling.
Keywords: rural planning; applied economics; gumbel distribution; return value; applied statistics.
Mindfulness: jak oswoić lęk językowy studentów języków obcych i zachęcić ich do uważnego życia?
Authors: Blachowska-Szmigiel Marzena
Published: March 2022

This article focuses on the possibilities of employing mindfulness in order to support a foreign language student in developing the competence to deal with language anxiety and to strengthen a sense of psychological well-being in the face of the contra-dictory challenges of modern times. First, the author describes the difficult situation of a contemporary student of foreign languages who functions in two axiologically contradictory realities: fluid modernity and crystallized university reality. Then the issue of language anxiety is discussed, and finally the author presents the concepts of the mindfulness program in foreign philology.
Wybrane aspekty przekładu terminów prawnych w kontekście międzykulturowym w postępowaniu ekstradycyjnym między Niemcami a Polską
Authors: Bawej Izabela
Published: March 2022

This paper focuses on the problem of cultural differences with respect to legal terms translation concerning the extradition procedure between Germany and Poland. In this context, the question as to how to tailor German legal terminology referring to institutional and office names to that of the Polish language in order to make the text comprehensible and understandable for Polish readers, e.g., judges, prosecutors or legal representatives, will be considered from a cultural perspective. The study is illustrated by examples from a German prosecutor’s letters to the Polish District Court regarding extradition arrangement.
"Religijność Czesława Milosza". 2020. Red. Kaźmierczyk Z. przy współpr. Wojan K. Gdańsk: Wydawnictwo Uniwersytetu Gdańskiego
Authors: Ojcewicz Grzegorz
Published: March 2022

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The Ukraine Crisis and the Struggle to Defend Democracy in Europe and Beyond: Rising stakes in the struggle for democracy
Authors:   International Institute for Democracy and Electoral Assistance (International IDEA)
Published: March 2022

Increasing authoritarianism in some countries, such as Russia, coupled with gradual democratic erosion around the world, poses an exceptional threat to a rules-based global order, and consequently to peace and prosperity. The invasion of Ukraine is the most blatant and tragic realization of this threat. Fundamentally, peace and democracy in Europe do not depend only on military, material and financial support for Ukraine. They also depend on dedicated, coherent and long-term action to defend democracy at the state level from foreign and domestic threats. Democracy does not flourish through benign neglect and positive thinking. It flourishes when the entirety of the polity, from student unions to the cabinet, understand the work that democracy requires and the enemies that it faces.
COMPARISON OF SOFTWARE METRICS FOR QUALITY ESTIMATION OF THE SOFTWARE PRODUCTS
Authors: MARTYNIUK OLEKSANDR , YASHYNA OKSANA , RADELCHUK GALYNA , KUSTOVSKYI ROMAN ,   Khmelnytskyi National University
Published: March 2022

There is a well known principle, that you can manage only what you can measure – therefore adequate measurement and estimation of different elements in any engineering area is a very important development factor, and software engineering is not an exception. Software metrics represent numeric values of software characteristics and are used for analysis of different aspects of the product in order to predict possible problems. Software metrics can be applied to any stage of the software life cycle. For instance, on a stage of requirement analysis and the problem formulation, these metrics help to estimate the required amount of work and, respectively, the amount of financial and work resources. In addition, the metrics can be used directly in estimation of the program code complexity to assess it’s performance, effectiveness and the ability to modify it if needed. Software metrics are an important part of the whole software quality management process as they can be easily automated and applied in order to achieve some valuable technical characteristics. Moreover, they can be combined with another quality management tools and are a beneficial addition to any software product development model. In general, measuring the attributes of software during any phase of development gives a number of beneficial results to the developers as it helps to use the time, finances and effort effectively. This is achieved because of early problems identification, estimation and prevention and because of that the size, cost, quality and simplicity of the maintenance of the product is always under control. This article describes the results of research on different software metrics types and the actual representatives of these types. It assesses the usage area and the convenience of it’s usage on evaluating the quality of both a finished product and a product in the development stage.
METHOD OF ESTIMATING THE EFFECT OF CONTOURS EMBROIDERED ELEMENT ON PHYSICAL AND MECHANICAL PROPERTIES OF FABRICS
Authors:   Volodymyr Dahl East Ukrainian National University, RIPKA GALYNA , ZASORNOVA IRYNA ,   Khmelnytskyi National University
Published: March 2022

Computer embroidery is one of the modern types of garment decoration. But in our country this industry is insufficiently studied. Instead, today there are entire associations of embroidery companies abroad, periodicals are published, special schools operate, international conferences are held, and Internet conferences on computer embroidery are organized. The article discusses the issues of improving the quality of applying an embroidered element to a textile material in order to increase the competitiveness of garments in the domestic market of goods and services. It was found that during machine embroidery, the most vulnerable point is the border of the “fabric-embroidery” system. If the embroidered pattern along the contours of the edge is characterized as a “straight line”, then the maximum value of the destruction of the samples at the warp occurs with tatami stitches, and weft with tatami stitches and zigzag. When the pattern is embroidered in the form of a circle, the destruction already occurs not only along the perimeter of the “arc line”, but also in the middle. If the embroidered pattern is a rectangle with wavy edges, in contrast to the straight and arc border lines in the system “fabric-embroidery”, the process of destruction occurs within, starting from the upper and then the lower contours. There is also a decrease in rupture characteristics at (S), (Z), and (T) –stitches. When studying the effect of embroidery needles on the physical and mechanical characteristics of textile materials, it was experimentally established that this process should be attributed to the destructive, the degree of which depends on their number, as well as the step and type of stitches. This is evidenced by the increase in the values of the coefficient of air permeability of the samples of materials and the decrease in the breaking indicators in comparison with the initial values. Thus, the research and their analysis shows that the degree of change in rupture characteristics, as a control indicator, primarily depends on the contour of the edge of the pattern, as well as the type of computer embroidery weave, but the greatest influence of these factors occurs when the geometry of the system boundary ” fabric-embroidery “is a straight line, and the smallest – a wavy line that does not contradict the mathematical model, the conclusions of which were used in the design of the embroidered element for children’s clothing (pants).
DESIGN FEATURES OF TRANSFORMING DEMISEASON OUTER WOMEN’S CLOTHES MADE OF ARTIFICIAL LEATHER
Authors: NECHIPOR SVITLANA , ВASHTINSKA ALINA ,   Ukrainian Engineering and Pedagogical Academy
Published: March 2022

The garment industry task is to make products from materials that do not harm the environment and can be used in different life situations (turned into products for different purposes or assortment and used in different weather conditions). Therefore, the work is devoted to transforming clothes. The artificial leather from which it is proposed to make clothes is a modern ecological material, therefore this material is chosen as an example in work. The analysis of scientific researches concerning features of clothes transformation is carried out. It is determined that the issue of transformation of garments requires additional study. The article highlights the design of garments for women’s outerwear made of artificial leather, which can be transformed; certain properties of artificial leather that affect special approaches to the design of such clothing; technological features of processing of some types of transformational from artificial leather are defined. Based on the properties of artificial leather and taking into account the requirements for transforming clothes, the collection of transforming clothes of demi-season women’s outerwear was designed. The logical structure of designing products-transformers from artificial leather is developed. The method of transformation (connection-disconnection) and accessories (buttons, tape- “zipper”) are chosen. Assembly schemes of processing product knots that undergo transformation are developed. Development of product cut details of a collection from the main material is executed. The efficiency of the developed collection is investigated by determining the coefficients of functional use of products. A comparative analysis of the results is performed. The relevance and functionality of the designed products-transformers are investigated. Issues for further research in this area are identified.
QUALITY ASSESSMENT OF FUR VELOUR
Authors:   Cherkasy State Business College, KHLIEBNIKOVA N. , DANYLKOVYCH А. ,   Kyiv National University of Technologies and Design
Published: March 2022

The paper offers a quantitative assessment of the quality of fur velour made of raw sheepskin and nutria skins obtained by the developed technologies. For this purpose, hydrophobized fur velour made of semi-fine-wool sheep skins and nutria skins with low-quality bristle hair has been used. The tanned semi-finished product of sheepskin and male nutria after moisture removal has been processed with a grinding skin of 4-5 grit. Fur velour is obtained from raw materials of inhomogeneous structure in different topographic areas, low density, but with satisfactory physical and mechanical properties of leather fabric, which in its quality meets standards requirements. The hydrophobization process is carried out with a composition based on α-alkenes С20–24 and maleic anhydride with an average molecular weight of 38‧103. According to the purpose of the research, a comprehensive assessment of the quality level of hydrophobized fur velour has been performed. A number of tasks have been implemented. Individual indicators of fur velour have been selected and ranked by experts. Their significance has been determined. The range of dimensional indicators of fur velour quality has been pointed out according to the scale of desirability. Desirability functions of velour quality significant indicators and complex quality index (CQI) of hydrophobized fur velour have been developed. The results of CQI development of sheepskin and nutria skins hydrophobized fur velour have been analyzed. CQI of hydrophobized fur velor and nutria skins, which includes 10 significant experimentally determined indicators has been calculated. According to the CQI, the hydrophobized velour material significantly outperforms fur velour obtained by standard technologies, especially after its sprinkling. Hydrophobized velour of sheepskin and nutria is characterized by a higher thermal resistance of 1.17 and 1.15 times, respectively, in comparison with control samples. The obtained materials can be effectively used to manufacture clothing items suitable for use in extreme conditions under rain and snow.
APPLYING MENTAL MODELS TO MAKING CONTROLLED CRITICALLY SAFE DECISIONS IN IT PROJECT MANAGEMENT
Authors: RADIUK PAVLO , SKRYPNYK TETIANA , KARLECHUK DMYTRO ,   Khmelnytskyi National University
Published: March 2022

Over the past decades, numerous researchers and practitioners have focused on the use case modeling for information technology project management. However, few studies have examined ways to improve the discovery phase of an information technology project through modifying use case diagrams. In this work, a mental model approach is suggested to integrate a visualization stage into the discovery phase by creating a conceptual mental model before constructing the use case diagram. It has been established that designing a mental model by visualizing the end user’s needs improves the ability of junior analysts to capture, analyze, and determine the user and functional requirements of information systems. Moreover, junior business analysts can extrapolate from the workflow presented in the conceptual mental model to determine the system’s actions to benefit the associated actor, which must appear in the use case diagram. The paper describes the design of user precedents through a conceptual mental model. Altogether, the proposed approach’s effectiveness in capturing, analyzing, and determining the requirements of information systems is measured in terms of accuracy, completeness, and simplicity.
PECULIARITIES OF FORMATION OF THE CLUSTER MODEL OF THE HOUSEHOLD WASTE MANAGEMENT SYSTEM FOR POLTAVA REGION
Authors: ILLIASH Оksana , BREDUN Viktor ,   Yuri Kondratyuk Poltava Polytechnic National University
Published: March 2022

The paper presents the results of research in the field of strategic planning of municipal waste management systems. Features of formation of household waste management systems on the basis of the cluster approach are considered. These studies were conducted as part of the development of the Regional Waste Management Plan in Poltava region for the period up to 2030, in particular with the participation of a group of experts authors of this work. The main results of these studies are the rationale for choosing the optimal cluster model of municipal waste management system for the conditions of Poltava region, and the rationale for its phased organization based on different scenarios from initial to future. The initial scenario is proposed as a basis for the organization of waste management systems within the newly created territorial communities, and the promising scenario is aimed at creating conditions in the region for the construction of regional waste treatment facilities and the operation of rational schemes of main transportation of household waste. The proposed cluster model of the regional system of household waste management is the basis for the stage of investment planning of costs for each community individually and for Poltava region as a whole. Improvement of this model should be carried out at the stage of developing local waste management plans, taking into account the specifics and main trends in the organization of household waste collection in each community.
JUSTIFICATION OF PARAMETERS AND DEVELOPMENT OF A LINEAR ASYNCHRONOUS ELECTRIC DRIVE OF A VIBROCENTER GRAIN SEPARATOR
Authors: WOZNIAK A. , SHTUTS A. , KOLISNYK M. ,   Vinnytsia National Agrarian University
Published: March 2022

The development of agriculture depends on the conditions of quality assurance and preservation of grown and produced products. To solve these problems, in particular, grain processing enterprises must have a well-equipped technical base capable of ensuring high-quality separation of grain, which arrives without losses in the short term. Separation of cereals is a key place not only in the processing process, but also is one of the main ways to increase the yield of cereals, as the separation process contributes to the selection of the highest quality (physiologically mature) seed. Work with grain is based on basic principles, which include advanced technology, flow processing methods and automation of the production process. Post-harvest processing of grain must ensure the timely organization and timely execution of all its stages while ensuring the minimum possible values ​​of energy and complexity of the process. The vast majority of separation machines used today in agriculture have a fairly low productivity, as most of them use gravitational forces to clean grain mixtures. Every year, production requirements are growing, and require new, most energy and technologically efficient methods of separation, as well as the creation or modernization of existing separating machines with higher productivity, quality and efficiency of separation of grain mixtures. Without theoretical and practical research, grain cleaning machines are impossible to further improve and create new, high-tech and energy-efficient structures. The main difficulty in considering improvements in temporary grain vibratory centrifugal separators is the lack of a basic design scheme of the vibrating drive, which will allow the implementation of a given law of oscillations with the required accuracy and ability to smoothly adjust the amplitude and frequency of oscillations in the vertical plane. Interesting and broad prospects for the development of electric drive are associated with the use of so-called linear motors. A large number of production mechanisms and devices have translational or reciprocating motion of the working bodies (lifting and transport machines, feed mechanisms of various machines, presses, hammers, etc.). As the drive of these mechanisms and devices, conventional electric motors were used in combination with special types of mechanical transmissions (crank mechanism, screw-nut transmission), transformed the rotational motion of the working body. Linear motors can be asynchronous, synchronous and direct current, repeating the principle of their operation of the corresponding motors of rotational motion.
ПОДХОДЫ К ОЦЕНКЕ ПРОФЕССИОНАЛИЗМА И УРОВНЯ КОМПЕТЕНЦИЙ ПЕДАГОГОВ ОБЩЕГО ОБРАЗОВАНИЯ ЧЕРЕЗ АНАЛИЗ РЕЗУЛЬТАТОВ ОБУЧЕНИЯ: ОПЫТ TОМСКОЙ ОБЛАСТИ
Authors:   Tomsk State Pedagogical University, Mozgova D. A. , Zamyatina O. M. , Semenova N. A. ,   Tomsk State Pedagogical University,   Director of the Institute of Pedagogical Education Development
Published: March 2022

The paper addresses the concepts of schools with low academic performance, resilient schools, and schools functioning in an unfavorable social environment. The study has analyzed the results of applying PISA (Program for International Student Assessment) 2019 to assess the education system in the Tomsk region in the context of schools with low academic performance, resilient schools, and schools operating in an unfavorable social environment. A new methodology for assessing the professional competence of teachers via evaluating the academic performance of students has been proposed.
Google and Alibaba’s Different Stock Performances after Antitrust Investigations, the Reasons and Enlightenment
Authors: Gu Cong , Lv Benfu , Peng Geng
Published: March 2022

Platform monopoly has attracted wide attention from politicians and the public.. The European Commission has made unremitting efforts in platform antitrust enforcement in the last decade, but together with antitrust investigations, the stock prices of platform giants like Google and Facebook keep breaking their highest points. At the end of 2020, the Chinese government also started antitrust investigations towards platform companies like Alibaba. In contrast, the stock price of Alibaba crashed and lost more than half of its market value. By analyzing their CAR, we proved that the stock performance of Alibaba is significantly worse than Google after their most serious antitrust investigations. The difference reflects investors' different expectations of the European Commission and China's antitrust enforcement. A noteworthy problem then comes out: while the Chinese government is seriously strengthening platform antitrust and putting forward reforms in platform regulation, is there any authority that is able to effectively regulate the international platform giants and maximize the welfare of their users worldwide?
Fractal Dimension Option Hedging Strategy Implementation During Turbulent Market Conditions in Developing and Developed Countries
Authors: Basson L.J. , Ferreira-Schenk Sune , Dickason-Koekemoer Zandri
Published: March 2022

A hedging strategy is designed to increase the likelihood of desired financial outcomes. Market speculators hedge investment positions if they are worth protecting against potential negative outcomes of turbulent market conditions and effective hedging implementation can reduce the impact severity on the underlying investment since these negative scenarios cannot be avoided. This paper provides a solution for investors to implement a trading strategy to effectively manage turbulent market conditions (such as the COVID pandemic) by implementing an investment trading approach. The investment strategy includes an index held by the investor (long position) and uses a fractal dimension indicator to warn when liquidity or sentiment changes are imminent within financial markets. When the threshold is breached at a predetermined level, the investor will take this observation as a change in liquidity in the market and a hedging position is undertaken. This sequence of events triggers the implementation of a hedging strategy by entering a buy put option position. The fractal indicator was found to be effective when applied to four of the six tested indices in terms of cumulative returns, but also in effect increased the risk taken by the investor for all six indices. The conclusion was made that where the outcome was similar for each economy type, both had a scenario where two out of the three economies outperformed the underlying index and had one index not outperforming the underlying index. This comparison was done to establish whether the hedging strategy had a more promising application to a developing or developed economy type. The fractal indicator was found to be effective when applied to four of the six tested indices in terms of cumulative returns, but also in effect increased the risk taken by the investor for all six indices.
ffect of 8 Weeks of Resistance Exercise Combined with Shirazi Thyme Supplementation on Plasma Levels of INF-γ and TNF-alpha in Men With Non-Alcoholic Fatty Liver
Authors:   Department of Sport Physiology, Lamerd Branch, Islamic Azad University, Lamerd, Iran., Ghaedi Hadi , Hosseini Seyed Ali ,   Department of Sport Physiology, Lamerd Branch, Islamic Azad University, Lamerd, Iran., Jaberi Habib ,   Department of Sport Physiology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran.
Published: March 2022

bjective: Resistance exercise and supplementation by Shirazi thyme has beneficial effects on inflammatory processes. The present study aims to assess the effect of 8 weeks of resistance exercise combined with Shirazi thyme supplementation on plasma levels of Interferon-gamma (INF-γ) and Tumor Necrosis Factor- alpha (TNF-α) in men with Non-Alcoholic Fatty Liver Disease (NAFLD). Methods: This is a clinical trial with a quasi-experimental design. Participants were 60 non-athlete men with NAFLD selected using a convenience sampling method and divided into four groups of placebo (n=15), exercise (n=15), supplementation (n=15), and exercise + supplementation (n=15). The exercise program consisted of eight weeks of resistance exercise at 3 sessions per week with an intensity of 50-80% of one repetition maximum). For supplementation, a 20 mg soft capsule (Barij Gastrolith) was prescribed three times per day and half an hour before meals. Blood samples were taken before and after the intervention. Data analysis was conducted in SPSS software using one-way analysis of variance considering a significance level of 0.05. Results: Resistance exercise (9.20±5.67), Shirazi thyme supplementation (8.36±4.80) and their combination (7.80±4.02) had no significant effect on INF-γ level (p≥0.05). Moreover, resistance exercise (4.56±1.69), Shirazi thyme supplementation (4.25±2.43) and their combination (5.21±2.22) had no significant effect on TNF-α level (p≥0.05). Conclusion: Resistance exercise alone, Shirazi thyme supplementation alone, or their combination cannot improve inflammatory markers of fatty liver in people with NAFLD. However, it requires further research.
The effect of parents attitudes to play in green space on childrens cognitive flexibility during Covid-19 home quarantine
Authors:   MSc, Department of Motor Behavior, Alzahra University, Tehran, Iran., Dodangeh Zahra , Malek Hosseini Ebrahim ,   MSc, Department of Sport Physiology, Shahid Beheshti University, Tehran, Iran., Shamsipour Dehkordi Parvaneh ,   Assistant Professor, Department of Motor Behavior, Faculty of Sport Sciences Alzahra University, Tehran, Iran
Published: March 2022

Introduction: In recent years, children have faced limitations in their playing surrounding, that can affect their cognitive operation. Aim: The purpose of the present study was to investigate the effect of all types of attitudes into the outdoor playings on childrens cognitive flexibility during Covid-19 home quarantine. Method: This paper was a cross-sectional observational study. A total of three hundred female students by the mean age of the 9 to 11 were participated in this study voluntarily by sampling method. Participants were selected from a school in Tehrans 19th district in 2020-2021 academic year. An online survey using a structural questionnaire createing by Google forms were used for data collecting. The online questionnaire consisted of three sections: demographic information, Childrens Cognitive Flexibility, and Parents Attitudes into the outdoor and playings and playing in nature. Variance analysing were used to analyze the data and Tukey's post hoc test were used to Locate the differences. SPSS25 were used for data analysing. Results: The analysis of variance resulted in a significant difference between the mean cognitive flexibility of those children whose parents had a positive attitude towards playing in nature compared to a negative attitude towards playing in nature (p=0.001). The results showed a better cognitive flexibility in those children whose parents had a positive attitude towards playing in nature. Conclusion: Positive or negative attitude of parents towards outdoor playings has an effect on childrens cognitive flexibility during home quarantine.
Structural relation between depression and anxiety with symptoms of ADHD in adulthood: mediation of emotion regulation and deficit in types of cognitive attention
Authors:   1-Msc, Department of Clinical Psychology, University of Kharazmi, Tehran, Iran., Ajourloo Zahra , Moghadasin Maryam ,   Assistant Professor, Department of Clinical Psychology, University of Kharazmi, Tehran, Iran, Hasani Jafari ,   Associate Professor, Department of Clinical Psychology, University of Kharazmi, Tehran, Iran.
Published: March 2022

Introduction: Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder in which the growth of the central nervous system is impaired. Aim: The purpose of the present study was investigating the structural relation between depression and anxiety with symptoms of adult ADHD, according to the meditative role of emotion regulation and cognitive attention deficit. Method: This study was a descriptive correlational. The statistical population included all students at Universities of Tehran, Iran in 2019. One hundred and forty-four students of Kharazami University were participated as a sample group via convenience sampling. Instruments include CERQ (2006), BDI (1996), BAI (1988), CAARS (1999), and IVA (1994). Data were evaluated and analyzed with the use of Pearson’s correlation and Structural Equation Model (SEM) by SPSS-23 and LISREL. Results: Results showed that depression and anxiety symptom have significant direct and indirect relations with an adult ADHD symptom (p<0.05). Also, maladaptive emotion regulation and cognitive attention deficit mediate the relationship between depression and anxiety with adult ADHD symptoms (p<0.05). Conclusion: Upon findings, depression and anxiety have relations with adult ADHD via mediating roles of emotion regulation and types of attention. Therefore, it could be concluded that deficits in types of cognitive attention and implementation of maladaptive emotion regulation strategies, accompanied by depressive and anxiety symptoms, can explain ADHD in adults.
Investigate the relationship between femininity-masculinity tendency with antisocial, histrionic and paranoia personality disorders in adolescents girl
Authors:   Assistant Professor, Department of Psychology, Payame Noor University, Tehran, Iran., Salahian Afshin , Saedi Somayeh ,   M.A in Educational Psychology, Department of Psychology, Payame Noor University, Tehran, Iran., Gharibi Hassan ,   Assistant Professor, Department of Psychology, Payame Noor University, Tehran, Iran., Salahian Noshin ,   M.A in Educational Psychology, Department of Psychology, Payame Noor University, Tehran, Iran.
Published: March 2022

Introduction: Adolescents are one of the most important and influential people in society and research on their psychological issues is important. Aim: The aim of this study was to investigate the relationship between femininity-masculinity tendency with antisocial, histrionic and paranoia personality disorders in adolescents girl. Method: The method of this research is correlational. The study population included girl high school students in Kamyaran in the academic year of 2018-2019, 302 of them were selected as the research sample and answered the Michel Googlen Scales (1996) and the Millon-III scale (1977). Data analysis was performed using spss software version 23 and Pearson correlation and regression statistical methods. Results: The finding showed that there was a correlation between feminity and histrionic personality disorder with 0.26 (P<0.05) and paranoia personality disorder with 0.20 (P<0.05). Also, the tendency to feminity predicts antisocial, histrionic and paranoia personality disorders in a positive and meaningful way (F<3.965, P<0.05). According to the finding, there was a correlation between tendency to masculinity and social personality disorder with 0.22 (P<0.05) and histrionic personality disorder 0.19 (P<0.01). Also, the tendency to masculinity predicts antisocial, histrionic and paranoia personality disorders in a positive and meaningful way (F<3.910, P<0.05). Conclusion: According to the results of this study, it can be concluded that the tendency to femininity-masculinity predicts personality disorders in adolescent. Therefore, it is one of the important psychological factors in the field of personality disorders.
The effectiveness of acceptance and commitment therapy on sociooccupational compatibility and acceptance of symptoms in patients with painful Diabetic Neuropathy: A single-blind randomized clinical trial
Authors:   Ph.D. Student, Department of Counseling, University of Social Welfare and Rehabilitation, Tehran, Iran., Taheri Amir Abbas , Foroughi Ali Akbar ,   Assistant Professor, Department of Clinical Psychology, Kermanshah University of Medical Sciences, Kermanshah, Iran, Davoudi Mohammadreza ,   Ph.D Student, Department of Clinical Psychology, University of Social Welfare and Rehabilitation, Tehran, Iran., Heshmati Khatereh ,   MSc, Department of Clinical Psychology, Kermanshah University of Medical Sciences, Kermanshah, Iran., Mohammdpour Mohsen ,   Ph.D. Student, Department of Clinical Psychology, Iran University of Medical Sciences, Tehran, Iran., Khoramniya Samad ,   MSc, Department of Clinical Psychology, Kermanshah University of Medical Sciences, Kermanshah, Iran
Published: March 2022

Introduction: Neuropathic pain is a common complication of diabetic patients. In these people, the pain reduces the work and social adjustment. Aim: The aim of this study was to evaluate the effectiveness of acceptance and commitment therapy on chronic pain acceptance and the work and social adjustment in patients with painful diabetic neuropathy. Method: This study was a quasi-experimental study in which patients were randomly divided into intervention and control groups. Participants were all patients with a diagnosis of diabetic neuropathy referred to the neurology department of Farabi Hospital in Kermanshah in 2019. Instruments included Chronic Pain Acceptance Questionnaire (CPAQ) and the Work and Social Adjustment Scale (WSAS). The results of three phases of pre-test, post-test and follow-up were evaluated. Data were analyzed by descriptive statistics, the repeated measures ANOVA, and chisquare tests using SPSS version 22. Results: The results demonstrate that in the post-test and follow-up phases, acceptance and commitment therapy could improve pain acceptance and the work and social adjustment in the intervention group as compared to controls. In the acceptance variable, the test results within the group showed that the effect of time (P=0.003, F=6.48) and the interactive effect of time and group (P=0.001, F=12.49) were significant. Also in the variables of work and social adjustment, the effect of time (P=0.046, F=3.21) and the interactive effect of time and group (P=0.028, F=3.74) were reported (p>0.001). Conclusion: Acceptance and commitment therapy can be used as a psychological intervention along with drug therapy to improve the work and social adjustment and acceptance symptoms in patients with painful diabetic neuropathy (PDN).
The effectiveness of acceptance and commitment therapy on cognitive flexibility, rumination, and distress tolerance in persons with Migraine headache
Authors:   MA, Department of Psychology, University of Guilan, Rasht, Iran., Bakhshandeh Larimi Negar , Zebardast Azra ,   Assistant Professor, Department of Psychology, University of Guilan, Rasht, Iran., Rezaei Sajjad ,   Assistant Professor, Department of Psychology, University of Guilan, Rasht, Iran.
Published: March 2022

Introduction: Tolerating migraine pain has a variety of psychological consequences that should be considered in the context of psychotherapy applications. Aim: The purpose of the current study was to determine the effectiveness of acceptance and commitment therapy based on cognitive flexibility, rumination and confusion tolerance in headache patients. Method: This research was a quasi-experimental with pre-test and post-test design with a control group. Among female students of Guilan University during the second semester of the 2018-2019 academic year, the numbers of 32 patients with migraine headache were selected by accessible sampling method and then assigned randomly into two groups included experimental (n=14) and control (n=18) groups. Eight sessions in 60 minutes per week were under-treatment based on acceptance and commitment in the group. Before and after the sessions, both groups answered voluntarily using Dennis & Wenderval’s (2010) Cognitive Flexibility Inventory, Nolen-Hoeksema & Davis Ruminative Responses Scale (1999), and Simons & Gaher Distress Tolerance Scale (2005). Data were analyzed by the Mann-Whitney U test. Results: The results revealed that the experimental group had significantly lower scores in rumination (U= 62.00, P=0.005) and higher scores in distress tolerance (U=69.50, P<0.01) than the control group after the intervention. Intervention on cognitive flexibility in the headache group indicated no significant difference (U= 133.00, P<0.70). Conclusion: Achieved results from the current research revealed that the acceptance and commitment therapy could be an appropriate alternative to reduce the rumination in people having migraine headache and to increase the distress tolerance in people having chronic pains.
Sistem Informasi Optimasi Produksi dengan Metode Simplex Guna Penentuan Laba Maksimum
Authors: Sutjiadi Ferrentino , Aminah Siti
Published: March 2022

PT. Poci Kreasi Mandiri merupakan salah satu perusahaan terkenal di Indonesia yang bergerak di bidang penjualan teh. Perusahaan ini bekerjasama dengan para franchisee (penerima waralaba) dalam menjalankan bisnisnya. Pencatatan yang dilakukan oleh franchisee perusahaan ini masih bersifat manual, mulai dari pencatatan stok barang, pencatatan penjualan, pencatatan laba, mengatur perencanaan penjualan, hingga menetapkan pendapatan laba masih dilaksanakan secara manual, dan dicatat dalam sebuah buku. Pencatatan secara manual dari proses perencanaan hingga pencapaian laba berpotensi terjadinya human error, yaitu kesalahan atau kekeliruan dalam proses pencatatan dan penghitungan laba. Hal ini dapat menghambat franchisee untuk menggapai laba yang maksimal. Franchisee perusahaan ini masih belum memiliki sistem yang tepat untuk melakukan proses administrasi produksi dan belum memiliki metode yang tepat untuk melakukan optimasi produksi serta menetapkan laba maksimum. Sesuai permasalahan yang dihadapi oleh franchisee perusahaan ini, peneliti membangun sistem untuk mempermudah dalam membantu proses pencatatan administrasi dan melakukan optimasi produksi. Proses optimasi produksi dilakukan dengan menggunakan metode pemrograman linier dengan pendekatan metode simpleks. Hasil optimasi dari penggunaan metode simpleks pada sistem yaitu berapa banyak produk yang harus diproduksi untuk mencapai laba kotor maksimum. Franchisee dapat menggapai laba total sebesar Rp43.299.700,00 melalui penerapan produksi yang telah dilakukan pada bulan Januari, tahun 2020. Sementara itu, sistem optimasi produksi menunjukkan bahwa franchisee masih bisa menggapai laba total sebesar Rp66.300.050,00.