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• Enhancing the effectiveness of thermal water consumption via heat pumping

  53-58

  János Nagygál

  László Tóth

  Bálint Horváth

  Zoltán Bártfai

  István Szabó

  Views:

  314

  Renewable technologies and the extension of their scope of usage basically has to face the general obstacles like any other novelties newly introduced to the market. In the case of environmentally friendly and clean technologies we must consider another critical aspect: the knowledge and the trust of the potential future users. To influence these people first we must extend their knowledge regarding renewable energies so they will be able to change their own approach about them. Usually the most crucial factor is the economic efficiency which determines the attitude of the majority of the users. Even the ones whose decision making process is highly based on the environmental patterns. In the case of any technology, the economic aspect is significantly influenced by its operational effectiveness. So this analysis – besides the direct economic matters – aims to examine how the performance of thermal water heating in greenhouses can be improved by using heat pumping.

  JEL classification: Q42

• The efficiency of porkers production of intensively and extensively feeded

  69-74

  Benedykt Pepliński

  Karol Wajszczuk

  Rafał Baum

  Dariusz Majchrzycki

  Jacek Wawrzynowicz

  Dariusz Lisiak

  Piotr Janiszewski

  Views:

  313

  The aim of this study is a comparative analysis of the costs of production of intensively and extensively fed porkers in view of the qualitative parameters of meat obtained after slaughter. The production experiment, which involved the parallel fattening of 3 groups of 30 porkers (fed intensively up to a weight of about 120 kg and extensively up to weights of about 100 kg and 120 kg), was carried out between 2011 and 2012 in a deliberately selected farm. The researchers assumed average prices of the means of production and prices of livestock pigs in individual meatiness classes noted in Poland in 2012. The fattening started when the animals weighed about 40 kg. The feeds used for extensive fattening contained less total protein, energy and basic exogenous amino acids, but more raw fibre. The analysis proved that the extensive production of porkers up to 100 kg in 2012 was not profitable. The most profitable production was the intensive production up to 120 kg (a profit of €0.100 per kg, whereas in the extensive feeding up to 120 kg the profit was €0.072 per kg. The porkers which were fed less intensively had a higher slaughter value, thinner fatback, higher dressing percentage and smaller content of fatback in the half-carcase, whereas their meat contained more water and less protein, fat and ash than the meat from the group of porkers fed with the mix richer in protein and energy.

• Reasons for and obstacles to cycling in opinions of residents of Debrecen, Hungary

  53-59

  Nikolett Kosztin

  József Tőzsér

  László Csernoch

  Ildikó Balatoni

  Views:

  354

  It is a basic aim of the European Union that due to the developments in 2014-2020 the bicycle would become one of the most often used transportation, touristic, and sports equipment. We were interested to see to what extent is bicycling present in the transportation system of Debrecen and what are the most important reasons for its residents to use the bicycles. The dedication of Debrecen to promote cycling is clearly proven by the number of newly built or resurfaced bike paths and by the fact that the University of Debrecen has introduced – alone in the region – UniBike which is a bicycle renting system brought forth by the need of its students. Here we present the developments that took place in the North Plain Region in the past few years. We have also analyzed the national and European strategies and reports on bicycling. A survey was conducted among the youth of Debrecen to explore their cycling habits. The data were evaluated using the EvaSys program. Until the end of 2011 with the help of different funds 862 km of bike paths had been built in Hungary. In the North Plain Region due to funds totaling 777 million HUF 15.7 km long bike paths had been constructed until 2015. The development of tourism in this direction is promoted by the web-pages and brochures offering bicycle-tours around Debrecen. Nevertheless, bicycling in the neighboring townships is present not as an instrument for sports and/or tourism, rather as a mean of transportation. It is a clear goal in Europe and thus in Hungary to have bike paths that can provide the means of safe cycling. In parallel, it is also important to promote the benefits of bicycling, including positive physiological effects, cost-effectiveness, and environment-friendliness to increase the proportion of those who select bicycling as an alternative.

  JEL Code: I15