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In Poland, the development of photovoltaic (PV) installations is an important element in the development of the Renewable Energy Sources (RES) sector and supports the prosumer power industry. The purpose of the article is to present a case study of the PROSUMENT program. It analyzes the data available to date on the development of the PV market in Poland. Apart from the costs of installing the PV systems, the article analyzes the profitability of investment for different micro-power installation capacities. A calculation for micro-power installations subsidized under the PROSUMENT program for various PV capacities is presented, along with the actual amount of the subsidy. The adopted calculation methodology is a comparative verification analysis of the investment cost estimate for a for the two studied PV facilities, i.e., Micro-power installation 1 and Micro-power installation 2. The building’s annual energy demand was adopted at the same level for both examples, with fixed active energy and distribution fees. The study includes a cost estimate for installing the PV systems and the profitability of the investments for various micro-power installation capacities. The analysis of the subsidy under the PROSUMENT program demonstrated that, in the analyzed period of 2016–2020, the best results were achieved by investments with a capacity of 10 kWp. In terms of the net subsidy value, the best results ranged between 27.20 and 19.10% of the total investment costs. Development of the Polish prosumer power market requires building public awareness of prosumer power production as an opportunity for the growth of the Polish economy.
Anna Szeląg-Sikora; Jakub Sikora; Marcin Niemiec; Zofia Gródek-Szostak; Marcin Suder; Maciej Kuboń; Tomasz Borkowski; Gabriela Malik. Solar Power: Stellar Profit or Astronomic Cost? A Case Study of Photovoltaic Installations under Poland’s National Prosumer Policy in 2016–2020. Energies 2021, 14, 4233 .
AMA StyleAnna Szeląg-Sikora, Jakub Sikora, Marcin Niemiec, Zofia Gródek-Szostak, Marcin Suder, Maciej Kuboń, Tomasz Borkowski, Gabriela Malik. Solar Power: Stellar Profit or Astronomic Cost? A Case Study of Photovoltaic Installations under Poland’s National Prosumer Policy in 2016–2020. Energies. 2021; 14 (14):4233.
Chicago/Turabian StyleAnna Szeląg-Sikora; Jakub Sikora; Marcin Niemiec; Zofia Gródek-Szostak; Marcin Suder; Maciej Kuboń; Tomasz Borkowski; Gabriela Malik. 2021. "Solar Power: Stellar Profit or Astronomic Cost? A Case Study of Photovoltaic Installations under Poland’s National Prosumer Policy in 2016–2020." Energies 14, no. 14: 4233.
Natural products have always enjoyed great popularity among consumers. Wild tea is an interesting alternative to tea from intensive plantations. The term “wild tea” is applied to many different varieties of tea, the most desirable and valued of which are native or indigenous tea plants. Special pro-health properties of wild tea are attributed to the natural conditions in which it grows. However, there are no complex studies that describe quality and health indicators of wild tea. The aim of this research was to evaluate the quality of wild and cultivated green tea from different regions of China: Wuzhishan, Baisha, Kunlushan, and Pu’Er. The assessment was carried out by verifying the concentration of selected chemical components in tea and relating it to the health risks they may pose, as well as to the nutritional requirements of adults. Wild tea was characterized by higher micronutrient concentration. The analyzed teas can constitute a valuable source of Mn in the diet. A higher concentration of nitrates and oxalates in cultivated tea can be associated with fertilizer use. The analyzed cultivated tea was a better source of antioxidants with a higher concentration of caffeine. There were no indications of health risks for wild or cultivated teas.
Maciej Chowaniak; Marcin Niemiec; Zhiqiang Zhu; Naim Rashidov; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Salimzoda Fayzullo; Usmon Mahmadyorzoda; Agnieszka Józefowska; Andrzej Lepiarczyk; Florian Gambuś. Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China. Molecules 2021, 26, 3620 .
AMA StyleMaciej Chowaniak, Marcin Niemiec, Zhiqiang Zhu, Naim Rashidov, Zofia Gródek-Szostak, Anna Szeląg-Sikora, Jakub Sikora, Maciej Kuboń, Salimzoda Fayzullo, Usmon Mahmadyorzoda, Agnieszka Józefowska, Andrzej Lepiarczyk, Florian Gambuś. Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China. Molecules. 2021; 26 (12):3620.
Chicago/Turabian StyleMaciej Chowaniak; Marcin Niemiec; Zhiqiang Zhu; Naim Rashidov; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Salimzoda Fayzullo; Usmon Mahmadyorzoda; Agnieszka Józefowska; Andrzej Lepiarczyk; Florian Gambuś. 2021. "Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China." Molecules 26, no. 12: 3620.
Amidst the changes and adjustments of the international energy situation, the leading trend is to shift from fossil fuels to low-carbon fuels, and ultimately, to enter the era of sustainable energy, based mainly on renewable energy. The ongoing changes in global security of energy supply and the high volatility of fossil energy prices also stimulate investment in alternative energy sources, making renewable energy sources (RES) one of the rapidly growing elements in the global energy system. This article fills the research gap by analyzing the potential of using renewable energy in the countries of the Commonwealth of Independent States (CIS) in the years 2015–2018. The authors address the energy potential in the years 2015–2019, and energy consumption in the years 2015–2018 as the potential of RES in the CIS countries was not researched after 2014. Please note that the study covers the CIS countries, along with Georgia and Ukraine, which are no longer formal members of the Community, but have been included for cognitive and comparative purposes. Upon comparing the increase in energy production in the CIS countries to the average increase for the European Union (EU) countries, the value of this increase is observably higher than the average for the EU countries only in Ukraine. However, the average for the entire CIS is much lower than the EU average, therefore in CIS countries, the changes in the volume of RES energy production are varied. In some countries, there is a significant increase in the production of this type of energy (e.g., Ukraine, Kyrgyzstan, Belarus, Kazakhstan, Georgia). However, there are also countries in which the changes are negligible, or which noted significant drops in RES energy production (Uzbekistan, Moldova, Russia, Armenia). The findings contribute to the RES market debate and the international relations theory by comparing political factors with territorial and economic factors.
Maciej Chowaniak; Zofia Gródek-Szostak; Karolina Kotulewicz-Wisińska; Małgorzata Luc; Marcin Suder; Anna Szeląg-Sikora. The RES in the Countries of the Commonwealth of Independent States: Potential and Production from 2015 to 2019. Energies 2021, 14, 1856 .
AMA StyleMaciej Chowaniak, Zofia Gródek-Szostak, Karolina Kotulewicz-Wisińska, Małgorzata Luc, Marcin Suder, Anna Szeląg-Sikora. The RES in the Countries of the Commonwealth of Independent States: Potential and Production from 2015 to 2019. Energies. 2021; 14 (7):1856.
Chicago/Turabian StyleMaciej Chowaniak; Zofia Gródek-Szostak; Karolina Kotulewicz-Wisińska; Małgorzata Luc; Marcin Suder; Anna Szeląg-Sikora. 2021. "The RES in the Countries of the Commonwealth of Independent States: Potential and Production from 2015 to 2019." Energies 14, no. 7: 1856.
The main goal of public intervention is to amend market imperfections. However, public agencies may also have other goals in supporting entrepreneurship and promotion of self-employment. The aim of the paper is to analyze the impact of the funding granted by the Małopolska Agency for Regional Development (Małopolska Agencja Rozwoju Regionalnego SA, MARR S.A.) dedicated to beneficiaries from the Tarnow subregion and the Krakow Metropolitan Area. The research goals were defined as follows: (1) To verify if the basic assumptions of the program are correct and to demonstrate that it is an important element motivating the professionally inactive to take up employment as sole entrepreneur. (2) To verify if the program participant structure (both applicants and beneficiaries), with subdivision into place of residence, gender, age and the labor market status, is correct. (3) To verify if the abovementioned variables (gender, age, place of residence) significantly differentiate the applicants’ chance of obtaining a grant. The results are of key importance and should be used in formulating assumptions, regulations and guidelines for subsequent program editions. Due to the demonstrated diversity of the target group in the respective regions, it should be decided whether to differentiate the criteria for participation in the project depending on the region.
Zofia Gródek-Szostak; Marcin Suder; Anna Szeląg-Sikora; Luis Ochoa Siguencia. The “Dobry Czas Na Biznes” (“Good Time for Business”) Program as a Form of Support for Self-Employment in Poland. A Case Study of the Sub-Regions of the Małopolskie Province. Sustainability 2020, 12, 9688 .
AMA StyleZofia Gródek-Szostak, Marcin Suder, Anna Szeląg-Sikora, Luis Ochoa Siguencia. The “Dobry Czas Na Biznes” (“Good Time for Business”) Program as a Form of Support for Self-Employment in Poland. A Case Study of the Sub-Regions of the Małopolskie Province. Sustainability. 2020; 12 (22):9688.
Chicago/Turabian StyleZofia Gródek-Szostak; Marcin Suder; Anna Szeląg-Sikora; Luis Ochoa Siguencia. 2020. "The “Dobry Czas Na Biznes” (“Good Time for Business”) Program as a Form of Support for Self-Employment in Poland. A Case Study of the Sub-Regions of the Małopolskie Province." Sustainability 12, no. 22: 9688.
Stable and sustainable economic development—including that of renewable energy resources (RES)—requires institutional support of an environment that would enable market operations, and support them in case they are ineffective. Innovation brokers, including structured technology transfer networks, play a key role in promoting, disseminating, and liaising between the parties in the RES sector. The aim of the paper is to present the structure of events used to promote RES in Europe by the Enterprise Europe Network in the years 2017–2018; to verify whether the type of promotion instrument used is significantly related to the location of the events organized; to research whether the selection of the supporting partner is determined by the organized event’s geographical location. The analysis is carried out by means of an empirical study of the network of innovation brokers, i.e., the Enterprise Europe Network. Additionally, the available data are analyzed in terms of the type of the partner supporting individual events. It has been shown that there is a significant variation in the structure of the types of events for individual regions of Europe. This could mean that the organizers’ decisions as to the type of events organized in particular regions of Europe are deliberate and in some way adjusted to the region in which they take place.
Zofia Gródek-Szostak; Marcin Suder; Rafał Kusa; Anna Szeląg-Sikora; Joanna Duda; Marcin Niemiec. Renewable Energy Promotion Instruments Used by Innovation Brokers in a Technology Transfer Network. Case Study of the Enterprise Europe Network. Energies 2020, 13, 5752 .
AMA StyleZofia Gródek-Szostak, Marcin Suder, Rafał Kusa, Anna Szeląg-Sikora, Joanna Duda, Marcin Niemiec. Renewable Energy Promotion Instruments Used by Innovation Brokers in a Technology Transfer Network. Case Study of the Enterprise Europe Network. Energies. 2020; 13 (21):5752.
Chicago/Turabian StyleZofia Gródek-Szostak; Marcin Suder; Rafał Kusa; Anna Szeląg-Sikora; Joanna Duda; Marcin Niemiec. 2020. "Renewable Energy Promotion Instruments Used by Innovation Brokers in a Technology Transfer Network. Case Study of the Enterprise Europe Network." Energies 13, no. 21: 5752.
The promotion of renewable energy is a key concept in the European Union for both environmental and economic reasons. It contributes to securing the objectives set out in the Kyoto Protocol. In addition, it brings various social and economic benefits, e.g., diversification of the energy offer, new jobs, improvement of regional and local development opportunities and building a solid national industry. The main purpose of the article is to contribute to the debate on the instruments promoting renewable energy sources (RES) by emphasizing its importance within the technology transfer network. The subject is an empirical study of an actual technology transfer network. Its international activity promotes RES among entrepreneurs. Data related to meetings as part of brokerage events (BE) and company missions (CM) were subject to statistical and visual analysis, based on the data obtained from the Enterprise Europe Network from the years 2017–2018. The presented results are the foundation for future theoretical and practical studies. One of the important aspects to be examined is the intensity of cooperation launched during CM and BE. It is related to the results of partnership agreements and the importance of increasing the knowledge flow and creating opportunities for partners to acquire foreign technologies.
Zofia Gródek-Szostak; Małgorzata Luc; Anna Szeląg-Sikora; Jakub Sikora; Marcin Niemiec; Luis Ochoa Siguencia; Emil Velinov. Promotion of RES in a Technology Transfer Network. Case Study of the Enterprise Europe Network. Energies 2020, 13, 3445 .
AMA StyleZofia Gródek-Szostak, Małgorzata Luc, Anna Szeląg-Sikora, Jakub Sikora, Marcin Niemiec, Luis Ochoa Siguencia, Emil Velinov. Promotion of RES in a Technology Transfer Network. Case Study of the Enterprise Europe Network. Energies. 2020; 13 (13):3445.
Chicago/Turabian StyleZofia Gródek-Szostak; Małgorzata Luc; Anna Szeląg-Sikora; Jakub Sikora; Marcin Niemiec; Luis Ochoa Siguencia; Emil Velinov. 2020. "Promotion of RES in a Technology Transfer Network. Case Study of the Enterprise Europe Network." Energies 13, no. 13: 3445.
Optimization of plant fertilization is an important element of all quality systems in primary production, such as Integrated Production, GLOBAL G.A.P. (Good Agriculture Practice) or SAI (Sustainable Agriculture Initiative). Fertilization is the most important element of agricultural treatments, affecting the quantity and quality of crops. The aim of the study was to assess greenhouse gas (GHG) emissions in the cultivation of Chinese cabbage, depending on the technological variant. The factor modifying the production technology was the use of fertilizers with a slow release of nutrients. One tonne of marketable Chinese cabbage crop was selected as the functional unit. To achieve the research goal, a strict field experiment was carried out. Calculation of the total amount of GHG emitted from the crop was made in accordance with ISO 14040 and ISO 14044. The system boundaries included the production and use of fertilizers and pesticides, energy consumption for agricultural practices and the emission of gases from soil resources and harvesting residue. The use of slow-release fertilizers resulted in a greater marketable yield of cabbage compared to conventional fertilizers. The results of the research indicate a significant potential for the use of slow-release fertilizers in reducing agricultural emissions. From the environmental and production point of view, the most favourable variant is the one with 108 kg N·ha−1 slow-release fertilizers. At a higher dose of this element, no increase in crop yield was observed. At this nitrogen dose, a 30% reduction in total GHG emissions and a 50% reduction in fertilizer emissions from the use of per product functional unit were observed. The reference object was fertilization in accordance with production practice in the test area.
Jakub Sikora; Marcin Niemiec; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Maciej Kuboń; Monika Komorowska. The Impact of a Controlled-Release Fertilizer on Greenhouse Gas Emissions and the Efficiency of the Production of Chinese Cabbage. Energies 2020, 13, 2063 .
AMA StyleJakub Sikora, Marcin Niemiec, Anna Szeląg-Sikora, Zofia Gródek-Szostak, Maciej Kuboń, Monika Komorowska. The Impact of a Controlled-Release Fertilizer on Greenhouse Gas Emissions and the Efficiency of the Production of Chinese Cabbage. Energies. 2020; 13 (8):2063.
Chicago/Turabian StyleJakub Sikora; Marcin Niemiec; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Maciej Kuboń; Monika Komorowska. 2020. "The Impact of a Controlled-Release Fertilizer on Greenhouse Gas Emissions and the Efficiency of the Production of Chinese Cabbage." Energies 13, no. 8: 2063.
Slaughterhouse waste management is an important technological, economic, and environmental challenge. Recently, more and more attention has been paid to the possibility of obtaining biogas from waste generated by slaughterhouses. The aim of the paper was to examine the effect of an emulsifier addition in the form of a carboxymethyl cellulose solution to create animal waste fermentation media based on the quantity and quality of the generated biogas. The adopted research goal was achieved based on a laboratory experiment of methane fermenting poultry processing waste. The waste was divided into two fractions: soft (tissue) and hard (bone). A fat emulsifier in a concentration of 1%, 2.5%, 5%, and 10% of fresh weight of the substrate was added to each substrate sample made from the above fractions. The emulsifier used was a 55% carboxymethyl cellulose solution, since this emulsifier is most commonly used in food production. The experiment was conducted in order to determine how the addition of an emulsifier (55% carboxymethylcellulose solution) affects the hydration of fats during methane fermentation, as demonstrated on poultry slaughterhouse waste. The samples were subjected to static methane fermentation, according to the methodology of DIM DIN 38414(DIN Deutches Institut für Normung). The experiment lasted 30 days. The total amount of biogas obtained after fermentation was 398 mL·g−1 for the soft fraction and 402 mL·g−1 for the hard fraction. In the case of the soft waste fraction, the addition of carboxymethylcellulose at 1% of the mass to the biogas process increased the amount of obtained biogas by 16%. In the case of the hard fraction, no effect of the addition of emulsifier on the total amount of biogas obtained was identified. In each case, the biogas from substrates with added emulsifier contained less methane and slightly more carbon. The emulsifier added to the soft fraction of slaughterhouse waste from poultry processing allowed cutting the process of methanogenesis by over 50% while maintaining the efficiency of biogas production. In the case of biogasification of bone tissue, no unambiguous effect of the addition of emulsifier on the improvement of process efficiency was identified.
Jakub Sikora; Marcin Niemiec; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Maciej Kuboń; Monika Komorowska. The Effect of the Addition of a Fat Emulsifier on the Amount and Quality of the Obtained Biogas. Energies 2020, 13, 1825 .
AMA StyleJakub Sikora, Marcin Niemiec, Anna Szeląg-Sikora, Zofia Gródek-Szostak, Maciej Kuboń, Monika Komorowska. The Effect of the Addition of a Fat Emulsifier on the Amount and Quality of the Obtained Biogas. Energies. 2020; 13 (7):1825.
Chicago/Turabian StyleJakub Sikora; Marcin Niemiec; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Maciej Kuboń; Monika Komorowska. 2020. "The Effect of the Addition of a Fat Emulsifier on the Amount and Quality of the Obtained Biogas." Energies 13, no. 7: 1825.
The goal of organic farming with respect to plant production is to create high-quality products while minimizing human impacts. The aim of this paper was to assess soil properties in selected organic farms in terms of the achievement of general and specific objectives of organic farming. Fifty five (55) organic farms were selected for the research; twenty five (25) of those farms additionally had conventional animal production with cattle breeding. Soil samples were collected from each farm and, the following parameters, deciding about the suitability for agriculture were determined: pH, content of organic carbon, available phosphorus and potassium, mineral nitrogen, and Total nitrogen content. The content of available phosphorus and mineral nitrogen was very low or low in most of the studied soils, which can lead to disturbance of homeostasis of agroecosystems. Potassium content in these soils was high. The properties of the studied soils indicate a high risk of chemical and biological degradation. Without implementing actions that control the pH and increase the content of nitrogen and phosphorus elements, the degradation will increase. Soil properties in the group of farms with animal production were more beneficial from the point of view of crop production, compared with farms that do not breed animals.
Marcin Niemiec; Maciej Chowaniak; Jakub Sikora; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Monika Komorowska. Selected Properties of Soils for Long-Term Use in Organic Farming. Sustainability 2020, 12, 2509 .
AMA StyleMarcin Niemiec, Maciej Chowaniak, Jakub Sikora, Anna Szeląg-Sikora, Zofia Gródek-Szostak, Monika Komorowska. Selected Properties of Soils for Long-Term Use in Organic Farming. Sustainability. 2020; 12 (6):2509.
Chicago/Turabian StyleMarcin Niemiec; Maciej Chowaniak; Jakub Sikora; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Monika Komorowska. 2020. "Selected Properties of Soils for Long-Term Use in Organic Farming." Sustainability 12, no. 6: 2509.
Optimization of plant nutrition is a very important part of primary production quality systems. Crop fertilization is the most important agrotechnical measure because it determines the amount and quality of the yield. Moreover, excess fertilization intensifies the eutrophication processes and the greenhouse effect. The study aimed to assess the suitability of slow-release fertilizers in cultivation of carrot subspecies Daucus carota L. ssp. sativus in the integrated production system. The objective was realized on the basis of a strict field experiment set up on a clay loam soil with low nutrient content. The dose of fertilizer was the experimental factor. The fertilizers were applied during the formation of the ridges. Traditional fertilizers (ammonium phosphate, potassium salt, ammonium nitrate, and a multi-component fertilizer Polifoska 6), as well as a multi-component fertilizer with slow release of nutrients, NPK Mg (18-12-24-4), were used. In individual variants of the experiment, different fertilization strategies were applied: integrated production fertilization, traditional fertilization, and fertilization based on the use of slow-release fertilizers. The control treatment comprised of unfertilized plants. The efficiency of nitrogen fertilization was evaluated based on agronomic efficiency, partial factor productivity, physiological efficiency, and removal efficiency. Fertilization strategy significantly impacted the quantity of obtained yield. In the control sample, prior to mineral fertilization, the crop yield was 33.53 Mg·ha−1. The largest yield was 82.30 Mg·ha−1.The largest yields were obtained from plants fertilized with a combination of slow-release fertilizers, with nitrogen introduced in the form of ammonium phosphate, and through conventional fertilization. The highest productivity and environmental efficiency were obtained in treatments with fertilization according to the principles of integrated production and with slow-release fertilizers. In terms of environmental efficiency, the best results were obtained through nitrogen fertilization using 400 kg of slow-release fertilizers. The use of slow-release fertilizers in carrot cultivation can significantly improve the efficiency of fertilization, both in terms of production and environmental protection.
Jakub Sikora; Marcin Niemiec; Monika Tabak; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Maciej Kuboń; Monika Komorowska. Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy. Sustainability 2020, 12, 1982 .
AMA StyleJakub Sikora, Marcin Niemiec, Monika Tabak, Zofia Gródek-Szostak, Anna Szeląg-Sikora, Maciej Kuboń, Monika Komorowska. Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy. Sustainability. 2020; 12 (5):1982.
Chicago/Turabian StyleJakub Sikora; Marcin Niemiec; Monika Tabak; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Maciej Kuboń; Monika Komorowska. 2020. "Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy." Sustainability 12, no. 5: 1982.
The purpose of the article is to identify and estimate the dependency model for the extreme prices of agricultural products listed on the Chicago Mercantile Exchange. The article presents the results of the first stage of research covering the time interval 1975–2010. The selected products are: Corn, soybean and wheat. The analysis of the dependency between extreme price values on the selected futures was based on the estimation of five models of two-dimensional extreme value copulas, namely, the Galambos copula, the Gumbel copula, the Husler–Reiss copula, the Tawn asymmetric copula and the t-EV copula. The next stage of the analysis was to test whether the structure of the dependency described with the estimated copulas is a sufficient approximation of reality, and whether it is suitable for modeling empirical data. The quality of matching the estimated copulas to empirical data of return rates of agricultural products was assessed. For this purpose, the Kendall coefficient was calculated, and the methodology of the empirical combining function was used. The conducted research allowed for the determination of the conduct for this kind of phenomena as it is crucial in the process of investing in derivatives markets. The analyzed phenomena are highly dependent on e.g., financial crises, war, or market speculation but also on drought, fires, rainfall, or even crop oversupply. The conducted analysis is of key importance in terms of balancing agricultural production on a global scale. It should be emphasized that conducting market analysis of agricultural products at the Chicago Mercantile Exchange in the context of competition with the agricultural market of the European Union is of significant importance.
Zofia Gródek-Szostak; Gabriela Malik; Danuta Kajrunajtys; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Marcin Niemiec; Joanna Kapusta-Duch. Modeling the Dependency between Extreme Prices of Selected Agricultural Products on the Derivatives Market Using the Linkage Function. Sustainability 2019, 11, 4144 .
AMA StyleZofia Gródek-Szostak, Gabriela Malik, Danuta Kajrunajtys, Anna Szeląg-Sikora, Jakub Sikora, Maciej Kuboń, Marcin Niemiec, Joanna Kapusta-Duch. Modeling the Dependency between Extreme Prices of Selected Agricultural Products on the Derivatives Market Using the Linkage Function. Sustainability. 2019; 11 (15):4144.
Chicago/Turabian StyleZofia Gródek-Szostak; Gabriela Malik; Danuta Kajrunajtys; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Marcin Niemiec; Joanna Kapusta-Duch. 2019. "Modeling the Dependency between Extreme Prices of Selected Agricultural Products on the Derivatives Market Using the Linkage Function." Sustainability 11, no. 15: 4144.
The paper analyzes the conditions for the functioning of agricultural producer groups, which are a modern example of commercial activity in the agricultural sector. Based on the available static data, the growth dynamics of the number of business entities in question was determined, i.e. approx. 120 newly formed groups on average annually. Production of pigs, grains or oilseeds, and poultry was the dominant production in the grouped agricultural enterprises. The analysis allows to conclude that the form of cooperation of agricultural producers presented in the work undoubtedly favors the improvement of the market competitiveness of agricultural producers, and this is the main objective of any commercial organization. Thus, contemporary formalized forms of cooperation between agricultural producers bear many common features attributed to enterprises from other sectors of the national economy.
Anna Szeląg-Sikora; Zofia Gródek-Szostak; Danuta Kajrunajtys. Agricultural Producer Groups as an Example of Commercial Organizations in the Agricultural Sector. Infrastructure and Environment 2019, 321 -327.
AMA StyleAnna Szeląg-Sikora, Zofia Gródek-Szostak, Danuta Kajrunajtys. Agricultural Producer Groups as an Example of Commercial Organizations in the Agricultural Sector. Infrastructure and Environment. 2019; ():321-327.
Chicago/Turabian StyleAnna Szeląg-Sikora; Zofia Gródek-Szostak; Danuta Kajrunajtys. 2019. "Agricultural Producer Groups as an Example of Commercial Organizations in the Agricultural Sector." Infrastructure and Environment , no. : 321-327.
Anna Szelag-Sikora; Marcin Niemiec; Jakub Sikora; Monika Komorowska; Michał Cupiał. Assessment of lead and chromium pollution in the ecosystem of the Dunajec River based on bioindicative methods. Journal of Elementology 2018, 1 .
AMA StyleAnna Szelag-Sikora, Marcin Niemiec, Jakub Sikora, Monika Komorowska, Michał Cupiał. Assessment of lead and chromium pollution in the ecosystem of the Dunajec River based on bioindicative methods. Journal of Elementology. 2018; (3/2018):1.
Chicago/Turabian StyleAnna Szelag-Sikora; Marcin Niemiec; Jakub Sikora; Monika Komorowska; Michał Cupiał. 2018. "Assessment of lead and chromium pollution in the ecosystem of the Dunajec River based on bioindicative methods." Journal of Elementology , no. 3/2018: 1.
Marcin Niemiec; Natalya Kuzminova; Anna Szelag-Sikora; Jakub Sikora; Monika Komorowska. Content of Ba, B, Sr and As in water and fish larvae of the genus Atherinidae L. sampled in three bays in the Sevastopol coastal area. Journal of Elementology 2018, 1 .
AMA StyleMarcin Niemiec, Natalya Kuzminova, Anna Szelag-Sikora, Jakub Sikora, Monika Komorowska. Content of Ba, B, Sr and As in water and fish larvae of the genus Atherinidae L. sampled in three bays in the Sevastopol coastal area. Journal of Elementology. 2018; (3/2018):1.
Chicago/Turabian StyleMarcin Niemiec; Natalya Kuzminova; Anna Szelag-Sikora; Jakub Sikora; Monika Komorowska. 2018. "Content of Ba, B, Sr and As in water and fish larvae of the genus Atherinidae L. sampled in three bays in the Sevastopol coastal area." Journal of Elementology , no. 3/2018: 1.
Motivation: Knowledge management is currently one of the most important factors determining the company’s market position. It depends not only on the skilful use of resources, but also on obtaining a synergistic effect. To manage knowledge, managers must possess not only the appropriate resources of knowledge, but also must have determined management structure with the assistance of the IT (information technology) tools.Aim: The purpose of the article was to present how the modern enterprise knowledge management process is supported by information technology. For this purpose, was summarized selected indicators characterizing the use of ICT in various types of enterprises in the country. It assumed that it is important not only the equipment the companies with information technology tools, but also the degree of use of these tools.Results: Usage of ICT in Poland reaches ratios much lower than the average for the European Union. Large differences in the use of information technology occurs in individual groups of companies. Larger companies have reached a much higher degree of saturation of IT tools than smaller objects. For example, the number of Polish enterprises with computers was 94.7%, in the case of large companies it is 99.8%. Even greater discrepancy relates to access to the Internet. You may also notice differences in each province. Introduction of modern technologies related to computer science and computers (eg. cloud computing, big data, social media, e-commerce etc) enables effective knowledge management in companies. The indicators show that the management team appreciates the importance of knowledge and consistently invests for its development.
Michał Cupiał; Anna Szeląg-Sikora; Jakub Sikora; Joanna Rorat; Marcin Niemiec. Information technology tools in corporate knowledge management. Ekonomia i Prawo 2018, 17, 5 -15.
AMA StyleMichał Cupiał, Anna Szeląg-Sikora, Jakub Sikora, Joanna Rorat, Marcin Niemiec. Information technology tools in corporate knowledge management. Ekonomia i Prawo. 2018; 17 (1):5-15.
Chicago/Turabian StyleMichał Cupiał; Anna Szeląg-Sikora; Jakub Sikora; Joanna Rorat; Marcin Niemiec. 2018. "Information technology tools in corporate knowledge management." Ekonomia i Prawo 17, no. 1: 5-15.
The aim of the study was to evaluate the content of Ni, Pb and Zn in the water and larvae of fish of the genus Atherinidae L., caught in three bays in the area of Sevastopol. The study was conducted in 2012 in the three bays in the area of Sevastopol: Galubaya, Omega and Karantinna. The results indicate that the content of all elements studied was at a higher level than that observed in the uncontaminated basins. The average concentration of Ni, Pb and Zn in water was respectively: 1.199; 14.62 and 64.32 μg · dm-3. The content of the elements studied in the examined fish larvae Atherinidae ranged from 6.413 to 19.65 mg Ni kg -1, from 1.749 to 5.393 mg Pb kg -1 and from 97.16 to 215.24 mg Zn kg-1.
Marcin Niemiec; Anna Szeląg-Sikora; Natalya Kuzminova; Monika Komorowska. Content of Ni, Pb and Zn, in selected elements of ecosystem in three bays in the area of Sevastopol. BIO Web of Conferences 2018, 10, 01015 .
AMA StyleMarcin Niemiec, Anna Szeląg-Sikora, Natalya Kuzminova, Monika Komorowska. Content of Ni, Pb and Zn, in selected elements of ecosystem in three bays in the area of Sevastopol. BIO Web of Conferences. 2018; 10 ():01015.
Chicago/Turabian StyleMarcin Niemiec; Anna Szeląg-Sikora; Natalya Kuzminova; Monika Komorowska. 2018. "Content of Ni, Pb and Zn, in selected elements of ecosystem in three bays in the area of Sevastopol." BIO Web of Conferences 10, no. : 01015.
Excessive fragmentation of agricultural enterprises is one of the most important barriers preventing the rational use of land in a large part of Poland. In particular, this problem affects the south-eastern regions of the country. Proper spatial distribution of farmland is one of the most important factors enabling economical effectiveness of agricultural enterprises. The purpose of the study was to create a spatial database which plotted the agricultural plots of a selected group of producers. The spatial database allowed determining the impact of the plots' location on the organization of field transport between the agricultural enterprise’s head office and its plots. The scope of study was a group of 5 vegetable producerslocated in Goczałkowice-Zdrój, in the commune of Goczałkowice-Zdrój, in the Pszczynapoviat, in the Śląskie Voivodeship.
Anna Szeląg-Sikora; Joanna Rorat. Spatial database for division of agricultural plots for the group of vegetableproducers. BIO Web of Conferences 2018, 10, 02033 .
AMA StyleAnna Szeląg-Sikora, Joanna Rorat. Spatial database for division of agricultural plots for the group of vegetableproducers. BIO Web of Conferences. 2018; 10 ():02033.
Chicago/Turabian StyleAnna Szeląg-Sikora; Joanna Rorat. 2018. "Spatial database for division of agricultural plots for the group of vegetableproducers." BIO Web of Conferences 10, no. : 02033.
Jakub Sikora; Marcin Niemiec; Anna Szelag-Sikora. Evaluation of the chemical composition of raw common duckweed (Lemna minor L.) and pulp after methane fermentation. Journal of Elementology 2018, 1 .
AMA StyleJakub Sikora, Marcin Niemiec, Anna Szelag-Sikora. Evaluation of the chemical composition of raw common duckweed (Lemna minor L.) and pulp after methane fermentation. Journal of Elementology. 2018; (2/2018):1.
Chicago/Turabian StyleJakub Sikora; Marcin Niemiec; Anna Szelag-Sikora. 2018. "Evaluation of the chemical composition of raw common duckweed (Lemna minor L.) and pulp after methane fermentation." Journal of Elementology , no. 2/2018: 1.
Fish processing generates considerable amounts of waste which constitutes a potential threat to the environment. The aim of this paper was to assess the possibility to use processing waste for anaerobic digestion and to use the generated digestate for fertilization purposes. This research involved evaluation of chemical composition of waste from a carp processing plant and of the digestate after methane fermentation. The content of dry matter, organic carbon, nitrogen, and other macroelements was determined in the samples. Moreover, the content of trace elements was determined. Dry matter content in the studied waste was 40%. Nitrogen content was approximately 5.56%, phosphorus—1.758%, calcium—0.4%, whereas mean potassium content was 0.502 g kg−1. As a result of conducting methane fermentation, a reduction in nitrogen content by about 50% and a considerable increase in quantity of almost all elements were observed. A high zinc content was recorded in the digestate, whereas concentration of other microelements was at a level close to the one in natural fertilizers. Concentrations of heavy metals did not exceed permissible values for organic fertilizers. The studied material can be a component for fertilizer production, and its fertilizing value depends mostly on nitrogen and phosphorus content.
Marcin Niemiec; Krzysztof Mudryk; Jakub Sikora; Anna Szeląg-Sikora; Monika Komorowska. Possibility to Utilize Fish Processing By-Products in the Context of Management of Non-renewable Resources. Springer Proceedings in Energy 2018, 639 -649.
AMA StyleMarcin Niemiec, Krzysztof Mudryk, Jakub Sikora, Anna Szeląg-Sikora, Monika Komorowska. Possibility to Utilize Fish Processing By-Products in the Context of Management of Non-renewable Resources. Springer Proceedings in Energy. 2018; ():639-649.
Chicago/Turabian StyleMarcin Niemiec; Krzysztof Mudryk; Jakub Sikora; Anna Szeląg-Sikora; Monika Komorowska. 2018. "Possibility to Utilize Fish Processing By-Products in the Context of Management of Non-renewable Resources." Springer Proceedings in Energy , no. : 639-649.
Zofia Gródek-Szostak; Danuta Kajrunajtys; Gabriela Malik; Anna Szeląg-Sikora. Activities of local government at stimulating innovativeness in the learning region – study of Lesser Poland voivodeship. European Journal of Service Management 2018, 27, 175 -181.
AMA StyleZofia Gródek-Szostak, Danuta Kajrunajtys, Gabriela Malik, Anna Szeląg-Sikora. Activities of local government at stimulating innovativeness in the learning region – study of Lesser Poland voivodeship. European Journal of Service Management. 2018; 27 ():175-181.
Chicago/Turabian StyleZofia Gródek-Szostak; Danuta Kajrunajtys; Gabriela Malik; Anna Szeląg-Sikora. 2018. "Activities of local government at stimulating innovativeness in the learning region – study of Lesser Poland voivodeship." European Journal of Service Management 27, no. : 175-181.