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Passenger transport: The challenges in the modern world 客运:现代世界的挑战
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2102023k
M. Knežević
In this paper, the author examines the domestic and international legal framework for the contract of carriage of passengers and its presence in different transport modes and offers a response to the current challenges. The purpose of the paper is to analyze the international and domestic regulations and present the rights and obligations of contracting parties in order to facilitate its application in the emerging practice. The author recognizes passenger transport as a field full of modern challenges caused by novel, still under-researched risks to passengers' health. Special attention is paid to the contract of passenger carriage by rail. The advantages of this transport mode are examined, the obligations of railway carriers and passengers are presented, while the obligation of the railway carrier to accept transporting any interested person if they have vacancies is underlined. The analysis focuses on the significance of the contract of passenger transport in the modern environment where risks to passengers' healthcare present. The author recognizes passenger transport by rail as a convenient and perspective branch of passenger transport for both international and domestic passenger transport. This sort of passenger transport already has the potential to respond to the challenges of preserving and strengthening the protection of passenger's rights, above all the right to safe and secure transportation.
在本文中,作者考察了国内和国际的法律框架的旅客运输合同及其存在于不同的运输方式,并提供了一个应对当前的挑战。本文的目的是分析国际和国内的规则,并提出缔约方的权利和义务,以促进其在新兴实践中的适用。作者认为客运是一个充满现代挑战的领域,对乘客健康的新风险仍有待研究。特别注意的是铁路客运合同。考察了这种运输方式的优点,提出了铁路承运人和旅客的义务,同时强调了铁路承运人接受任何有空缺的利害关系人运输的义务。分析的重点是客运合同的意义在现代环境中,乘客的健康风险存在。笔者认为铁路客运无论对国际客运还是国内客运,都是一种便捷而有前景的客运方式。这种客运方式已经有潜力应对维护和加强保护乘客权利的挑战,尤其是安全可靠的运输权利。
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引用次数: 0
Total cost of ownership of infrastructure as a service for SME 为中小企业提供基础设施即服务的总拥有成本
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2104037r
O. Radović, Maša Georgiev, Milica Đorđević
Cloud Computing offers significant cost benefits for SMEs that often do not manage internal IT infrastructure and start-up companies that do not have their own IT infrastructure. This paper presents a total cost of ownership (TCO) approach for cloud computing services with an emphasis on the infrastructure as a service (IaaS) model. Also, the paper presents a methodology for estimating total cost of ownership (TCO) when running computer instances in the IaaS cloud using the GARCH model to predict transaction volatility. The research results show that it is possible to successfully use GARCH models when there is historical data on the number of transactions. In addition, simulation shows that, when there are large oscillations in the number of transactions, the best choice is to reserve instances according to the Partial-Upfront price model. In contrast, if the transaction number is relatively stable, the best choice is the All-Upfront model.
云计算为通常不管理内部IT基础设施的中小企业和没有自己IT基础设施的初创公司提供了显著的成本优势。本文介绍了云计算服务的总拥有成本(TCO)方法,重点介绍了基础设施即服务(IaaS)模型。此外,本文还提出了一种估算在IaaS云中运行计算机实例时总拥有成本(TCO)的方法,该方法使用GARCH模型来预测交易波动性。研究结果表明,当存在交易数量的历史数据时,可以成功地使用GARCH模型。另外,仿真结果表明,当交易数量波动较大时,根据部分前期价格模型保留实例是最佳选择。相反,如果交易数量相对稳定,则最好选择All-Upfront模式。
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引用次数: 0
Socio-demographic characteristics of digital financial services users: Evidence from Serbia 数字金融服务用户的社会人口特征:来自塞尔维亚的证据
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2104055l
Isidora Ljumović, Krsto Jakšić, Slaviša Trajković
Given the importance of digital financial services on financial inclusion, the authors examined the socio-demographic characteristics of users of digital financial services in the Republic of Serbia. The authors hypothesized that age, education, employment, and income are key socio-demographic characteristics that have influenced digital financial services. The Global Findex database of the World Bank was used to analyze the socio-demographic characteristics of digital financial service users in the Republic of Serbia, with a sample of 1000 inhabitants older than 15 years. To test differences between the analyzed characteristics, a t-test was applied using SPSSv25. The results show a difference among most of the analyzed characteristics. Socio-demographic characteristics, apart from gender and income, are statistically significant. The results show a statistically significant difference in the age of users of digital financial services and non-users of digital financial services. Also, users of digital financial services are highly educated and more often employed. Based on the results, it can be concluded that the average user of digital financial services is younger, more educated, more often employed and uses various banking services, such as credit and debit cards, savings and borrowing more often than non-users of these services.
鉴于数字金融服务对普惠金融的重要性,作者研究了塞尔维亚共和国数字金融服务用户的社会人口特征。作者假设年龄、教育、就业和收入是影响数字金融服务的关键社会人口特征。使用世界银行的全球金融指数数据库分析塞尔维亚共和国数字金融服务用户的社会人口特征,样本为1000名15岁以上的居民。为了检验所分析特征之间的差异,使用SPSSv25进行t检验。结果表明,所分析的大多数特征之间存在差异。除性别和收入外,社会人口特征在统计上也很显著。结果显示,数字金融服务用户和非数字金融服务用户的年龄存在统计学上的显著差异。此外,数字金融服务的用户受过高等教育,而且经常有工作。根据结果,可以得出结论,数字金融服务的平均用户更年轻,受教育程度更高,更经常就业,并且使用各种银行服务,如信用卡和借记卡,储蓄和借贷比非这些服务的用户更频繁。
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引用次数: 2
Poverty Dynamics in Turkey: A Multinomial Logit Model 土耳其的贫困动态:一个多项逻辑模型
Pub Date : 2021-01-01 DOI: 10.15388/ekon.2021.100.2.6
Senem Çakmak Şahin, İ. Kılıç
The availability of longitudinal data allows researchers to analyse the dynamics of poverty. By using the Turkish Statistical Institute’s (TurkStat) Income and Living Conditions Survey micro dataset, we analyse the households’ long-term monetary poverty conditions. We categorise poverty as transitory and chronic and employ the multinomial logit method to analyse determinants of each types of poverty. Results indicate that education and household size are the most effective factors for reducing transitory poverty, and for chronic poverty, the most effective factors are having a regular job and having a skilled occupation; insurance, home ownership, and number of children are important determinants for both types of poverty.
纵向数据的可用性使研究人员能够分析贫困的动态。通过使用土耳其统计研究所(TurkStat)的收入和生活条件调查微观数据集,我们分析了家庭的长期货币贫困状况。我们将贫困分为暂时性和慢性,并采用多项逻辑方法来分析每种贫困类型的决定因素。结果表明,教育程度和家庭规模是减少暂时贫困最有效的因素,而对于长期贫困,最有效的因素是拥有固定工作和拥有技术职业;保险、房屋所有权和子女数量是这两种贫困的重要决定因素。
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引用次数: 1
Implementation of quality management system and the level of maturity of the company in the dairy industry of Serbia 质量管理体系的实施和公司在塞尔维亚乳制品行业的成熟程度
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2103063m
M. Mihajlović, J. Tadić, Jelena Jotić
The aim of this paper is to point out the existence of differences in the application of quality management systems as well as the level of maturity in the companies of the dairy industry in the Republic of Serbia. The initial assumption is based on the defined goal which states that the application of quality management systems and the level of maturity in these companies differ depending on their size. The research was conducted on the basis of QMMG - Quality Management Maturity Grid model of maturity. The initial assumption test was performed using the Kruskal-Wallis test as a nonparametric alternative to one-way analysis of variance of different groups. In addition to this method, the methods analysis, the synthesis method and descriptive statistics were also used. Using the mentioned statistical methods, six aspects of the quality management system were processed (Management understanding and attitude, Quality organisation status, Problem handling, Cost of quality as percent of sales, Quality improvement actions and Summary of company quality posture) as well as the entire quality management system in selected companies. Statistically significant deviations were found in five of the six aspects as well as in the overall quality management system. The contribution of this research is reflected in the diagnosis of the level of maturity in the companies covered by this research together with the possibility of improving certain aspects of the quality management system in order to develop the skills needed to increase the companies ' quality performance.
本文的目的是指出塞尔维亚共和国乳制品行业公司在质量管理体系应用以及成熟度水平方面存在的差异。最初的假设是基于已定义的目标,即这些公司的质量管理体系的应用和成熟度水平因其规模而异。本文在QMMG -质量管理成熟度网格模型的基础上进行了研究。初始假设检验采用Kruskal-Wallis检验作为非参数替代不同组的单向方差分析。除本方法外,还采用了方法分析法、综合分析法和描述性统计法。使用上述统计方法,在选定的公司中处理了质量管理体系的六个方面(管理理解和态度,质量组织状态,问题处理,质量成本占销售的百分比,质量改进行动和公司质量态势总结)以及整个质量管理体系。在六个方面中的五个方面以及整个质量管理体系中发现了统计上显著的偏差。本研究的贡献体现在本研究所涵盖公司的成熟度水平的诊断,以及改进质量管理体系某些方面的可能性,以发展提高公司质量绩效所需的技能。
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引用次数: 0
Risky Mortgages and Macroprudential Policy: A Calibrated DSGE Model for Lithuania 风险抵押贷款和宏观审慎政策:立陶宛的校准DSGE模型
Pub Date : 2021-01-01 DOI: 10.15388/ekon.2021.100.2.1
Jaunius Karmelavičius
Following the financial crisis of 2009 there was an emergence of macroprudential policy tools, as well as a need to model the macroeconomy and the financial sector in a coherent framework. This paper develops and calibrates a small open economy DSGE model for Lithuania to shed some light on the interactions between the macroeconomy and the banking sector, regulated by macroprudential policy. The model features housing market, and endogenous credit risk a la de Walque et al. (2010), whereby the household can default on mortgage repayments, what leads to housing collateral seizure. Foreign-owned banks, that are subject to risk-sensitive macroprudential capital requirements, take into account not only the mortgage default rate but also the cap on loan to value (LTV) ratio when making lending decisions. Using this mechanism, we show that while a more stringent LTV constraint reduced credit demand, it can also lead to an expansion in credit supply via lower credit risk. Therefore, a tightening of LTV requirement should result in only a slight reduction in mortgage lending, coupled with lower interest rate margins. The article compares the impact of the tightening of three macroprudential tools, namely, bank capital requirements, mortgage risk weights and LTV limit. We find that broad-based capital requirements, such as the counter-cyclical capital buffer, are less efficient in leaning against the housing credit cycle, because of a relatively large cost incurred on the firm sector.
2009年金融危机之后,出现了宏观审慎政策工具,也需要在一个连贯的框架内对宏观经济和金融部门进行建模。本文为立陶宛开发和校准了一个小型开放经济DSGE模型,以揭示宏观经济与银行业之间的相互作用,受宏观审慎政策的监管。该模型的特点是住房市场和内生性信用风险(la de Walque et al., 2010),即家庭可能拖欠抵押贷款还款,从而导致住房抵押品被扣押。外资银行受到风险敏感型宏观审慎资本要求的约束,在做出贷款决策时,不仅要考虑抵押贷款违约率,还要考虑贷款价值比上限。使用这一机制,我们表明,虽然更严格的LTV约束减少了信贷需求,但它也可以通过降低信贷风险导致信贷供应的扩张。因此,收紧LTV要求应该只会导致抵押贷款的小幅减少,同时息差也会降低。本文比较了银行资本金要求、抵押贷款风险权重和LTV限制这三种宏观审慎工具收紧的影响。我们发现,广泛的资本要求,如反周期资本缓冲,在抵御住房信贷周期方面效率较低,因为企业部门产生了相对较大的成本。
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引用次数: 1
The main factors affecting the competitiveness of the oil processing complex 影响石油加工综合体竞争力的主要因素
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2102070v
Daria Palitsyna Vladimirovna
The development of the economic situation in Russia in recent years is characterized by the achievement of stabilization at the macro level, the strengthening of investment activity, the expansion of the scope of activities of the processing industry, the strengthening of public confidence in domestic goods and finished products. The research urgency is caused by the fact that in Russia economic competition becomes more acute in oil and fat processing sector, also has a problem of lack of training organizations to consider the impact of external factors and competitive advantages of the industry to ensure financial stability. The purpose of the study is to study the features of factors affecting the competitiveness of the oil processing complex. On the basis of sources of economic literature, the authors studied the competitiveness of vegetable oil production by comparison and identified the problems of insufficient methodological support for studying the impact of factors that determine the current state of the vegetable oil market, methods and approaches for assessing the competitiveness of organizations. The leading direction is a comprehensive approach presented by the authors in the article, including the study of domestic and international experience in determining the factors of internal and external environment that affect the development of the industry. The study of the traditional system of assessing the competitiveness of vegetable oils is given, proposed by Russian and foreign scientists. As a result of the conducted research it is established that modern domestic and foreign methods of the analysis of the competitiveness of vegetable oils do not differ in high quality and have shortcomings. The authors noted that the analysis of the concept of competitiveness of vegetable oils does not take into account the quality indicators are not always fully represented the composition and structure of the concept, not justified organizational and methodological approaches to the analysis of the concept of competitiveness applicable to vegetable oils. The researchers note the need for an objective assessment of the analysis of the concept of competitiveness of vegetable oils to supplement it with a more detailed study of improving the level of competitiveness. In their opinion, the lack of a single definition of the term "competitiveness of products" is one of the most difficult in the formation of an adequate approach to the assessment of the phenomenon. This leads to the fact that the most common assessment is a comparative assessment of similar vegetable oils with ethanol. The study conducted by the authors has scientific and practical significance and will allow to develop a methodological apparatus (parameters and criteria for assessing the level of competitiveness of vegetable oils) in accordance with the requirements of the industry in the world economy, as well as to form a set of strategic and tactical management decisions to improve t
近年来俄罗斯经济形势发展的特点是实现了宏观层面的稳定,投资活动加强,加工工业活动范围扩大,公众对国内产品和制成品的信心增强。研究的紧迫性是由于俄罗斯石油和脂肪加工部门的经济竞争日趋激烈,同时缺乏培训机构考虑外部因素的影响和行业的竞争优势,以确保金融稳定的问题。研究的目的是研究影响石油加工综合体竞争力的因素特征。在经济文献来源的基础上,作者通过比较研究了植物油生产的竞争力,并发现了研究决定植物油市场现状的因素的影响的方法支持不足的问题,以及评估组织竞争力的方法和途径。主导方向是作者在文章中提出的综合方法,包括研究国内外经验来确定影响行业发展的内外部环境因素。对传统的植物油竞争力评价体系进行了研究,这是由俄罗斯和外国科学家提出的。研究结果表明,国内外植物油竞争力的现代分析方法在质量和质量上并无差异,但也存在不足。作者指出,对植物油竞争力概念的分析没有考虑到质量指标,也没有总是充分代表这一概念的组成和结构,没有合理的组织和方法方法来分析适用于植物油的竞争力概念。研究人员指出,有必要对植物油竞争力概念的分析进行客观评估,以对提高竞争力水平进行更详细的研究作为补充。他们认为,缺乏对“产品竞争力”一词的单一定义是形成评估这一现象的适当办法的最困难的问题之一。这导致了一个事实,即最常见的评估是将类似的植物油与乙醇进行比较评估。作者进行的研究具有科学和实际意义,并将根据世界经济中该行业的要求,开发一种方法装置(评估植物油竞争力水平的参数和标准)。形成一套提高植物油竞争力的战略战术管理决策和创造竞争优势、加强植物油市场地位的互动机制。
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引用次数: 0
The impact of economic development on the efficiency of the financial sector 经济发展对金融部门效率的影响
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2103107c
Milica D. Cvetkovic, M. Cogoljević, Marija Ranđelović
A stable financial sector creates economic development. Speculative actions in financial markets cause disturbances and are an indicator of economic instability. The growth of a modern market economy more than two centuries ago is interconnected with the growth of the financial system. The averment that there is a connection between the growth of the financial and real sectors of the economy is as old as economics science. A developed financial system encourages competition, expands the market, and increases the efficiency of financial institutions. The depth and the breadth of financial markets are growing, which are transmission to the performance and structure of the economy. Through linking savings and investments, the financial system controls and manages the risks that are characteristic of financial operations and facilitates the interaction of production and consumption. The financial systems of transition countries are not sufficiently developed, so this paper aims to point out the interconnectedness and impact of the financial system on macroeconomic stability.
稳定的金融部门促进经济发展。金融市场的投机行为会引起混乱,是经济不稳定的一个指标。两个多世纪以前,现代市场经济的发展与金融体系的发展是相互关联的。金融和实体经济部门的增长之间存在联系,这种说法与经济学一样古老。发达的金融体系鼓励竞争,扩大市场,提高金融机构的效率。金融市场的深度和广度不断扩大,传导到经济的表现和结构上。金融体系通过将储蓄和投资联系起来,控制和管理金融业务特有的风险,促进生产和消费的相互作用。转型国家的金融体系还不够发达,因此本文旨在指出金融体系对宏观经济稳定的关联性和影响。
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引用次数: 2
Economic impact of the coronavirus pandemic on air traffic 冠状病毒大流行对空中交通的经济影响
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2102059r
Nikola Radić, Vlado Radić, B. Grujić
The coronavirus pandemic is an unprecedented event in modern history, not only of aviation, but also of humanity. The negative consequences of the pandemic are not only related to the suspension of flights and the inability to transport passengers, but also have a great impact on other industries, such as the production of aircraft, systems and engines, tourism, the food industry, etc. The suspension of flights has led to many times lower revenues than planned, the dismissal of a large number of employees in this industry, as well as the cancellation of new airplanes ordered. Also, the prescribed health care measures that airlines must apply will affect a smaller number of passengers on planes, which means that each flight will be less cost-effective. Faced with large losses, airlines must organize in order to achieve maximum efficiency and a partial return to the levels of flying and transportation of people and goods that were achieved during 2019. The paper analyses the state and importance of the global aviation industry, the impact of the pandemic on business results and solving the problems of airlines.
冠状病毒大流行不仅是航空史上前所未有的事件,也是人类现代史上前所未有的事件。大流行的负面后果不仅与航班暂停和无法运送乘客有关,而且对其他行业也有很大影响,例如飞机、系统和发动机的生产、旅游业、食品工业等。停飞导致收入比计划低很多倍,导致该行业大量员工被解雇,新飞机订单也被取消。此外,航空公司必须实施的规定医疗保健措施将影响到飞机上的少数乘客,这意味着每次航班的成本效益将降低。面对巨大的损失,航空公司必须组织起来,以实现最高效率,并部分恢复到2019年实现的飞行和人员和货物运输水平。本文分析了全球航空业的现状和重要性,疫情对业务结果的影响以及航空公司解决问题的方法。
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引用次数: 5
Measuring and estimating tax elasticity in the Republic of Serbia 衡量和估计塞尔维亚共和国的税收弹性
Pub Date : 2021-01-01 DOI: 10.5937/ekonomika2101017k
Branimir Kalaš, V. Mirović, Jelena Andrašić
The paper analyzes tax elasticity in the Republic of Serbia in terms of tax revenues, personal income tax, corporate income tax, value added tax, social security contributions and excises for the period 2005-2019. Tax elasticity manifest sensitivity of tax forms to a change in the gross domestic product, where results have shown that indirect taxes have higher coefficients of elasticity compared to direct taxes. Results of empirical analysis have manifested that tax revenues are elastic to a change in gross domestic product, where 1% increase in GDP makes to a change of tax revenues for 1.31%. Also, tax elasticity is the highest at corporate income tax, while revenues from value added tax and excises are also elastic in the observed period. On the other hand, personal income tax and social security contributions are inelastic to a change in the gross domestic product in the Republic of Serbia.
本文从2005-2019年期间的税收、个人所得税、企业所得税、增值税、社会保障缴款和消费税等方面分析了塞尔维亚共和国的税收弹性。税收弹性表明税收形式对国内生产总值变化的敏感性,结果表明间接税与直接税相比具有更高的弹性系数。实证分析结果表明,税收收入对国内生产总值的变化具有弹性,国内生产总值增长1%,税收收入变化1.31%。此外,企业所得税的税收弹性最高,而增值税和消费税的收入在观察期内也具有弹性。另一方面,个人所得税和社会保险缴款对塞尔维亚共和国国内生产总值的变化没有弹性。
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引用次数: 0
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Ekonomika Vilniaus Universitetas
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