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Note on simple and logarithmic return
127-136Views:1216In this paper we describe and clarify the definitions and the usage of the simple and logarithmic returns for financial assets like stocks or portfolios. It can be proven that the distributions of the simple and logarithmic returns are really close to each other. Because of this fact we investigate the question whether the calculated financial risk depends on the use of simple or log returns. To show the effect of the return-type on the calculations, we consider and compare the riskiness order of stocks and portfolios. For our purposes, in the empirical study we use seven Hungarian daily stock prices and for the risk calculation we focus on the following risk measures: standard deviation, semivariance, Value at Risk and Expected Shortfall. The results clearly show that the riskiness order can depend on the use of the return type (i.e. log or simple return). Generally, often – due to missing data or the nature of the analysis – one has to use approximations. We also examine the effect of these approximations on the riskiness order of stocks and of portfolios. We found differences in the riskiness order using exact or approximated values. Therefore, we believe, if this is possible, exact values instead of approximated ones should be used for calculations. Additionally, it is important that one uses the same type of return within one study and one has to be aware of the possible instabilities when comparing return results.
JEL Code: C18
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Low-carbon innovation policy with the use of biorenewables in the transport sector until 2030
45-52Views:408The topic of the present study deals with the changes and future trends of the European Union’s climate policy. In addition, it studies the manner in which Hungary’s transport sector contributes to the success of the above. The general opinion of Hungarian climate policy is that the country has no need of any substantial climate policy measures, since it will be able to reach its emission reduction targets anyway. This is mostly true, because the basis year for the long term goals is around the middle/end of the 1980’s, when Hungary’s pollution indices were entirely different than today due to former large-scale industrial production. With the termination of these inefficient energy systems, Hungary has basically been “performing well” since the change in political system without taking any specific steps in the interest of doing so. The analysis of the commitments for the 2020-2030 climate policy planning period, which defined emissions commitments compared to 2005 GHG emissions levels, has also garnered similar political reactions in recent years. Thus, it is not the issue of decreasing GHG emissions but the degree to which possible emissions can be increased stemming from the conditions and characteristics of economic growth that is important from the aspect of economic policy. In 2005, the Hungarian transport sector’s emissions amounted to 11 million tons, which is equal to 1.2% of total EU emissions, meaning it does not significantly influence total transport emissions. However, the stakes are still high for developing a low GHG emission transport system, since that will decide whether Hungary can avoid those negative development tendencies that have plagued the majority of Western European transport systems. Can Budapest avoid the scourge of perpetual smog and traffic jams? Can it avert the immeasurable accumulation of externalities on the capital city’s public bypass roads caused by having road transport conduct goods shipping?
JEL classification: Q58
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Liquid bio-fuels in Hungary: effects and contradictions
89-94Views:347The increase of living standard requires ever more energy, despite energy saving measures. Domestic growth was 100 PJ between 2000 and 2006, and 77% of the total utilization was importe (Hungarian Central Statistical Office, 2008).Sustainability was endangered not only in our energy and commerce policy. Our domestic natural conditions are suitable for plant production; however, the stagnation of the domestic population and decreasing livestock numbers restrict in land marketing. Therefore, significant surpluses from year to year had to be stored and sold abroad, and the fact that the interventional purchase of corn and the expected stringent new EU regulation of the sugar beet sector, make the strategic significance of these branches uncertain. The difficult marketing opportunities make the better utilization of our opportunities in producing liquid bio-fuels possible from marketing aspects, while environmental issues and realizing the EU directions enforce to do so in a longer term. Over the short term, agricultural and competitive aspects will determine its spread, which cause different effects in Europe in comparison with the developing countries. According to Nábrádi-Ficzeréné Nagymihály, 2008, one of the breaking points of Hungarian agriculture lies in the utilization of alternative energy sources. During the past period, many contradictory opinions came forward relating to economies, agricultural effects, food risks as well as the energetic and environmental efficiency of bio-fuels. One thing is certain: these fuels are already used today and their significance has been increasing. Although due to technological development, spread of new products and processes (cellulose-based bioethanol, bioethanol, biogas, hydrogen, biomethane) will obviously have to be expected in the future, at present biodiesel and bioethanol are determent among bio-fuels, thus I deal with these as well as their energetic and agricultural effects in my study.
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A Matrix Model for Integrated Pest Management as a Combined Function of Extension Education and Economic Concepts
Views:494The Farmer Field Schools (FFS) help to establish the significance of the Integrated Pest Management (IPM) concept, i.e., the FFS contributed to demonstrating the importance of the IPM idea. In this paradigm, the integrated pest management specialist's decision is based on the application of agricultural extension and economic principles. This requires an analysis and understanding of the ecosystem and plant physiology, followed by monitoring the population dynamics of the pest to determine the pest’s economic injury level, and finally, determining the appropriate action to suppress it. The transition point from organically integrated pest control measures to chemical pest control is when pest density exceeds economic injury. In other words, when pest density surpasses economic damage, an organically integrated pest control approach gives way to the chemical pest control method. This study advises conducting research experiments and studies to ascertain the economic impacts of pandemic pests on the targeted crop, such as powdery mildew and aphid pests in the protected tomato plant culture.
JEL CODE: Q16
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Impact of Terrorism on Agricultural Business in Borno State, Nigeria
117-124Views:488This study examines the impact of terrorism on agribusiness in Borno state. Terrorist activities in Borno state dates back to 2009 where a group of Islamic extremists popularly known as Boko Haram (meaning western education is a sin) became violent in their activities. The group operates significantly in north-eastern Nigeria where Borno state is located and since 2009. The presence of the group has led to collapse of socio-economic activities in Borno state among other states. Millions of people have been displaced fromtheir homes and forced to live in camps in neighbouring states. As a result, this study examines the impact of insurgency related activities on agribusiness in BornoState. Agricbusiness in Borno state can be measured using four different parameters, amount of area cultivated, annual crop production, rearing of livestock and fish farming. These are the major agricultural business residents of Borno state are engaged in. However due to unavailability of data, rearing of livestock and fish farming are dropped, thus focusing on area cultivated and annual crop production. As a result of these two variables, two models are developed. The first model measures the relationship between amounts of crop produced with insurgency related killings, while the second model measuresthe relationship between total areasof farmland cultivated with fatalities resulting from terrorist activity. This study employs Ordinary Least Squares methodology and finds that both relationshipsreveal negative results thus indicating statistically significant negative impact of terrorism on agribusiness in Borno State.
JEL Classification: Q10, Q18, Q12
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Proposals for low-carbon agriculture production strategies between 2020 and 2030 in Hungary
5-15Views:666When viewed from the perspective of climate policy, agriculture as a separate sector is one of the most difficult development areas to assess. One of the reasons for this is the problem of the localization of greenhouse gas emitters, caused by the fact that production takes place in small or dispersed production units. The special circumstance that unit production takes place in complex interactive systems (food, feed, energy sources, main products, by-products, etc.) is yet another special factor, which in addition makes it significantly more difficult to measure and identify the GHGs they emit than if they were a uniform production plant. Additionally, there are few sectors outside agriculture where decision-makers encounter such strong opposition and lobby interests when developing limiting regulations. This stems from the fact that following World War II, European decision-makers and the Common Agricultural Policy elevated agriculture to a prominent role whose importance was indisputable. As a result, both climate policy and other measures that would result in any reduction of the priority of the sector are very difficult to implement, since the players involved always reason that limitations would restrict their competiveness and the security of their production. In addition, the uncertain nature of regulatory elements also poses a grave problem. As an example, the name of the sector itself – the LULUCF (Land Use, Land Use Change and Forestry) sector – shows that the strategy for reducing the greenhouse gasses emitted by the whole sector would be significantly different if these units were treated separately (agricultural land use, forest, not-cultivated areas). Taking the above into account, the present study aims to identify development directions that in turn allow those low-carbon development directions to be pinpointed within animal husbandry and plant production that have the greatest feasibility and can contribute to decreasing the GHG environmental load exerted by agriculture.
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Co-innovation: what are the success factors?
29-36Views:329The problem we address in this paper is that in projects focusing on public-private cooperation to stimulate innovation in the Netherlands, initiatives often lack continuation after the study-phase. We extracted possible influencing variables from business and (transaction) cost economic theorizing, stakeholder and capability theory. Moreover, we used measures for classifying projects with respect to financial interdependencies between participants. We supposed that project characteristics influence managerial behavior to continue or stop. We studied 28 projects (20 supply chain projects and 8 biological product development projects). Our aim was to explore the barriers and success factors for these co-innovation projects: innovation as a cooperative effort between public sector/research institute and private organization(s). We derived data from project descriptions and performed semi-structured interviews with project informants. Critical to success appears to be ex ante commitment of all parties. Goal congruence, both at a personal and a company level, and proportionality of sharing in project results are of decisive importance to establish such commitment. Estimations about financial project results should be made in an early stage; they should be used as a basis for negotiations on the (re)distribution of costs and benefits, especially if the value added is disproportionally distributed over the participants. Ideally, project teams of co-innovation projects should bring in complementary capabilities: technical, marketing, financial and organizational. Project governance should therefore be organized in such a way that the knowledge gaps are filled in before kick-off.
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Environmental management activities of NHL teams
Views:499Over the past two decades, the sports sector has paid increasing and growing attention to understanding sustainability, including the environment, and in particular what can be done in practice. The purpose of this study is to examine the environmental CSR measures adopted by professional hockey teams in North America.
To answer my research question, I used a comparative analysis based on secondary data sources. For all 32 teams, I examined the available reports and their information on CSR activities, the information published on the teams' websites, and the research results related to the teams. I have selected 3 teams (Minnesota Wild, Pittsburgh Penguins, Seattle Kraken) that are at the forefront of the issue under study, using an evaluation system based on international literature, and case studies to showcase good practices that can serve as examples for the sports sector.
JEL Code: Q56
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Clasters and Correlations among the Eu Member States Regarding Agri-Food Foreign Trade
55-63Views:348The European Union has a significant role in international trade but this is largely in the area of industrial goods. However, in the case of some agricultural commodities the EU applies tariffs, bans, or different restrictive measures; it manages foreign trade in agricultural goods with many countries all over the world. On the other hand the member states do not contribute to the total trade of the EU to the same extent. In this study, a comparative analysis was performed in relation to the member states by means of data of Eurostat and Faostat. First, a multivariable correlation analysis was carried out in order to find the interrelation between the trade features of each country. In the second part of the study, a cluster analysis was carried out with almost the same component as in the foregoing, also in terms of the EU member states. It can be ascertained that the date of EU accession of a Member State as well as getting EU agricultural subsidies do not affect the agricultural foreign trade of the member states. Countries with significant agricultural production also export food commodities in larger quantities. Countries that have significant exports extra-EU also have larger imports in the case of both basic commodities and prepared food as well. As a result of the cluster analysis, it can be stated that the member states can be divided into specific groups according to the three examined aspects (food trade features, exports of commodities, imports of commodities). The following typical country groups can be divided as follows: non-trade countries, countries with larger trade extra-EU, agri-food exporter and importer countries, non-agri-food exporter and importer countries, primary commodity exporters and importers, and last but not least processed food exporters and importers as well.
JEL Classification: F10
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Modeling multifunctionality of agriculture at a farm-level: The case of kerkini district, Northern Greece
59-64Views:297Multifuncionality has become a central concern at both conceptual and empirical levels. In this study, a comparative evaluation of the economic performance of conventional and multifunctional farms (mainly organic farms) was conducted for the Lake Kerkini region (North Greece) with the use of mixed integer non-linear programming method. The economic performance of farms was evaluated in terms of farm income, resource allocation, production level and production mix. The results indicate that multifunctional farms have overall better economic performance and young farm managers are keener to adopt multifunctional farming than the older ones. Differences between the model results and the observed facts are attributed to the structural characteristics of the farms, along with the CAP measures and the existence of multiple objectives, beyond maximization of net farm returns.
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Challenges to sustainable rural development in Russia: social issues and regional divergences
45-51Views:427Paper aims at investigation of contemporary approaches to sustainable rural development in Russia. It includes the overview of current experiences in rural development, analysis of major economic and social indicators of rural areas in comparison with urban ones. Analysis included the set of indicators such as number of rural people, number of rural settlements, rates of births and mortalities, natural and migration increases and declines of population, rates of employment and unemployment, average monthly nominal per capita wages, and level of the subsistence minimum. Indicators have been measured separately for rural and urban areas; regions have been grouped in relation to the particular indicator. The research is concluded by discovery of growth points for rural development and a set of recommendations on perspective measures of state and local policies in rural areas, directed on increase of living standards of rural population and retention of labour resources in their traditional rural areas of inhabitation.
JEL: Q18, P25
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