خيارات البحث
النتائج 261 - 270 من 2,008
Sapropel as an adhesive: assessment of essential properties
2016
Obuka, V., University of Latvia, Riga (Latvia) | Veitmans, K., Latvia Univ. of Agriculture, Jelgava (Latvia) | Vincevica-Gaile, Z., University of Latvia, Riga (Latvia) | Stankevica, K., University of Latvia, Riga (Latvia) | Klavins, M., University of Latvia, Riga (Latvia)
Recently, a renewed interest in non-harmful, environmentally friendly adhesives has ensued among the industry professionals, both environmental and healthcare scientists. In this study, organic rich lake sediments (sapropel) from two lakes located in Latgale Region of Latvia were used as a glue to investigate the potential use of such adhesive for manufacture of composite materials from wood. Sapropel is a valuable resource with multiple areas of application, e.g., agriculture, balneology. Available amount of sapropel in Latvia is estimated at up to 2 billion m**3. Prior the tests, characterization of sapropel samples was done. Properties of the obtained composite material samples from wood and sapropel, as well as the mechanical properties were investigated. Tests involved the assessment of static bending strength and shear strength tests, durability according to their operating performance (D1-D4), as well as dried natural peat tensile strength perpendicular to the grain direction were determined and compared to the literature data; and the opportunities to use new composite materials in accordance with to the standards were discussed. The results of the study revealed an insight into possibilities to develop products of higher added value from sapropel as adhesive in combination with various resources. Results indicated that the samples made from Lake Pilvelis sapropel gain to better results of bending strength determination (parallel bending - 88.7 MPa). The aim of this study was to explore options to produce veneer using two kinds of sapropel as a glue and to determine the optimal properties according to the standards, as well as to characterize properties of the obtained composite material.
اظهر المزيد [+] اقل [-]Productivity of Latvian and Lithuanian rural farms and main factors influencing it
2016
Veveris, A., Latvia Univ. of Agriculture, Priekuli, Priekuli parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics | Sapolaite, V., Lithuanian Inst. of Agrarian Economics, Vilnius (Lithuania) | Dambina, L., Latvia Univ. of Agriculture, Priekuli, Priekuli parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics
The aim of the paper is the assessment of the changes in productivity expressed as the share of production costs in total output and its breakdown by major cost types of Latvian and Lithuanian farms over the period of the implementation of Rural Development Programme (RDP 2007 – 2013). The country’s agricultural productivity is determined by comparison of the total agricultural output value (in producer prices) and total inputs which include intermediate consumption expenditure, depreciation, labour costs and other external costs. The information for the analysis was sourced from the standardized Farm Accountancy Data Network (FADN) data. The results show that productivity level is higher in Lithuanian farms, although the tendency is that the share of costs in production value is increasing in Lithuania, so the difference between two countries is reducing. The changes of productivity in both countries infer the relative growth in the productivity in crop farming both in Latvia and Lithuania respective to dairy farming, as well as the productivity of large farms respective to small and medium farms. The comparisons of major cost items reveal an especially high level of energy costs in Latvia, as well as a high and soaring level of depreciation in Lithuania, especially in dairy farms. In the future policy making, it is worthwhile to design the measures targeting the confinement of risks and negative trends identified in the study.
اظهر المزيد [+] اقل [-]Research of factors influencing customer switching behaviour in farmers’ markets in Lithuania
2016
Zikiene, K., Vytautas Magnus Univ., Kaunas (Lithuania) | Pileliene, L., Vytautas Magnus Univ., Kaunas (Lithuania)
In recent years, farmers’ markets have become one of the most popular places for alimentary shopping. People searching for the alternative and healthier products often choose farmers’ markets instead of shopping centres. However, farmers’ markets face the same or even tougher competition than the conventional shopping places: farmers not only compete with powerful shopping chains, they have to compete among each other for every single customer. Therefore, customer loyalty becomes inevitable in this industry. Knowing the factors that lead customers to switch to another vendor becomes very important for consumer retention. The aim of the research is to determine the factors influencing customer switching behaviour in farmers’ markets in Lithuania. In order to reach the aim, the research was conducted in several stages: 1) the expert evaluation was provided to determine the factors influencing the customer switching behaviour that would be relevant to the industry; 2) a questionnaire survey regarding latter factors was provided; 3) the influence of the factors on customer switching behaviour regarding the different states of customer loyalty was assessed.
اظهر المزيد [+] اقل [-]Competitiveness of Latvian dairy sector: productivity and export
2016
Krievina, A., Lithuanian Univ. of Health Sciences, Kaunas (Lithuania) | Hazners, J., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania) | Melece, L., Lithuanian Univ. of Health Sciences, Kaunas (Lithuania)
The objective of the research paper is to explore the competitiveness of Latvian dairy sector from the aspect of productivity and export indicators, as well as to examine some of the possibilities to improve the sector competitiveness. The authors explore the productivity and export indicators of Latvian dairy sector, and the link between productivity and export (within the EU context), as well as analyse the impact of farm investment support within RDP 2007 – 2013. Value added per labour unit has been chosen as the productivity indicator; suitable qualitative and quantitative research methods have been applied to the studies. Based on the introduced indices of relative position of dairy industry productivity and exports, dairy processing in Latvia has strong inter-branch position in the domestic food industry. However, the inter-country comparison shows that Latvian dairy processing is behind the EU average level, when its productivity and export volume are considered. It has been found that productivity and export of dairy processing are positively related; rather strong positive correlation also exists between productivity in dairy farming and dairy processing. Therefore, the development of Latvian dairy sector, which mainly depends on the development of exports, can be more successfully achieved by the increase in its productivity; and relatively the largest productivity gap to close is in the dairy farming in Latvia. The direct investment support effect on NVA/AWU of dairy farms is found to be significant and positive, indicating that farm modernisation support of RDP 2007 – 2013 has facilitated the improvement of overall dairy farm productivity in Latvia.
اظهر المزيد [+] اقل [-]Social services development in rural areas designing domestic help for elderly people
2016
Staniuliene, S., Vytautas Magnus Univ., Kaunas (Lithuania) | Januleviciene, L., Vytautas Magnus Univ., Kaunas (Lithuania)
Considering the deficiencies of social services for the elderly in governmental institutions and growing demand of ensuring services in rural areas, the paper aims to assess the needs of elderly people for social services in the selected rural areas and to propose the social services’ development opportunities in terms of domestic help for the elderly. The social services facilitate support to elderly dependents in their homes, without interrupting their relationships with the family and the community, and improving their quality of life. The survey has shown that the municipality usually satisfies only basic biological needs of old people in rural areas. In order to ensure the well-being of elderly people, a complete cooperation among governmental and non-governmental institutions is required. Development of the services should be focused on the provision of the domestic help services for elderly people who do not receive them, and the diversity of the services for those residents who receive services from the municipality. The implementation of the development project of the domestic help services would enable the elderly residents of the rural municipality to have access to the most necessary services at the required frequency and intensity, considering the recipients’ needs, thus improving the quality of life of the elderly people of local community and ensuring their dignified ageing.
اظهر المزيد [+] اقل [-]Decision making on the use of cultural heritage in rural tourism development in Latvia
2016
Jeroscenkova, L., Latvia Univ. of Agriculture, Jelgava (Latvia) | Rivza, B., Latvia Univ. of Agriculture, Jelgava (Latvia) | Rivza, P., Latvia Univ. of Agriculture, Jelgava (Latvia)
The preservation of cultural heritage has become an important component of government policies of the EU and, of course, Latvia. Along with the preservation of cultural heritage, the use of it is also important. The aim of the research is to choose the best scenario for the use of cultural heritage in developing rural tourism in Latvia. The paper focuses on the problem of use of cultural heritage in the rural tourism development. The paper defined three scenarios for the use of cultural heritage in developing rural tourism: the initiative of entrepreneurs, public organisations and residents; the programme funded by national and regional institutions; the EU fund for the preservation of cultural heritage. A decision on the choice of the most appropriate scenario was made based on an expert decision-making method – the Analytic Hierarchy Process (AHP). Out of the three scenarios seven experts: rural craftsmen, a municipality vice leader, a civil servant from the Latvia Ministry of Finance, representatives from rural tourism organisations and the Association of Rural Female organisations, chose the third scenario – the EU fund for the preservation of cultural heritage.
اظهر المزيد [+] اقل [-]Evaluation of the competitiveness of fisheries sector cluster
2016
Biuksane, I., Latvia Univ. of Agriculture, Priekuli, Priekuli parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics;Riga Technical Univ. (Latvia) | Judrupa, I., Riga Technical Univ. (Latvia)
The aim of the research is to elaborate the competitiveness assessment system for fisheries sector cluster, using which it could be possible to assess the competitiveness of fisheries sector cluster in time and space. On the basis of scientific literature study, the authors provide solutions of how to assess the competitiveness of the fisheries sector cluster. As a result of analysis, it was discovered that the best way to assess the competitiveness of the fisheries sector cluster is by using a comprehensive complex indicator – the Index of the Fisheries Sector Cluster Competitiveness. The created Index of the Fisheries Sector Cluster Competitiveness helps the institutions involved in the creation of fisheries policy more successfully elaborate and improve the common policy of fisheries.
اظهر المزيد [+] اقل [-]Quality changes during summer–autumn long-term storage of Scots pine (Pinus sylvestris L.) roundwood
2016
Magaznieks, J., Latvia Univ. of Agriculture, Jelgava (Latvia) | Millers, M., Latvia Univ. of Agriculture, Jelgava (Latvia) | Gzibovska, Z., Latvia Univ. of Agriculture, Jelgava (Latvia)
Latvia at the moment does not have precise data about long-term storage of Scots pine. Long-term storage in warm season may lead to significant damages for high priced timber, income reduction for timber sellers and quality loss risk for timber buyers, therefore, roundwood is transported as soon as possible, because of the risk of blue stain, crooks and insect damages. Results of this study on Scots pine were obtained during summer–autumn season of year 2015. Scots pine timber quality changes in long-term storage were analysed in 4 sample stacks – set up in summer (25 July) and stored for 100 days. In every sample plot there was a control pile, a pile with harvester spike damages, a pile with bark damages and a pile with harvester spike and bark damages. There were 32 timber assortments in every pile in order to determine also the emplacement effect in stack. In this study a high correlation was found between pine timber quality changes and meteorological conditions, side surface damages and storage length. By analysing the proportion of blue stain in cross-section and its changes during storage between control assortments and assortments with bark and harvester damages, significant differences were observed, therefore it can be concluded that not only bark damages influence the proportion of blue stain, but also harvester spike rollers. Based on the results of this study, we can predict maximum storage duration during summer–autumn period in Latvia, and it is set from 9 – 16 days.
اظهر المزيد [+] اقل [-]Wood fibre insulation material
2016
Veitmans, K., Latvia Univ. of Agriculture, Jelgava (Latvia) | Grinfelds, U., Latvian State Inst. of Wood Chemistry, Riga (Latvia)
As worldwide trends are changing gradually and sustainable resources economy and reduction of hazardous emissions are coming to the forefront, several industry sectors are forced to revalue their resource consumption. The main emphasis is currently placed on the recycling of by-products. One of the methods, definitely, includes burning of by-products to generate power, however it is not always the most efficient one. By-products must be used in the manner that ensures that they provide high added value for the operation of the company and are environmentally friendly. This research focuses on the use of the by-products of birch (Betula) veneer manufacturing, in order to obtain thermal insulation material. The following characteristics of the wood fibre insulation material were determined: thermal conductivity, water absorption, vapour permeability, and prototype reaction to fire. The characteristics of the obtained wood fibre thermal insulation material: thermal conductivity 0.038 W•mE-1•kE-1; water absorption 12 kg•mE-2; the conformity of the material even to D fire reaction class was not determined. The principal conclusion: the wood fibre thermal insulation material conforms to the requirements set for thermal insulation materials.
اظهر المزيد [+] اقل [-]Analysis of Turkish traditional food regarding e-business and e-marketing
2016
Serefoglu, C., Ankara Development Agency (Turkey)
Turkish traditional food producers are mainly subsistence and semi-subsistence farmers who have a limited marketing knowledge. They thus encounter a significant number of problems during the supply chain due to the lack of capital, awareness and equipment, as well as underutilized resources and insufficient rural infrastructure. They are also not actively encouraged by the policies implemented at the regional level. The majority of the food reaches consumers either directly (the less common purchases from the farmer) or via a number of intermediaries. If the current volume of traditional food is compared with the past production volume, it can be clearly seen that there is a sharp decrease in the production in contrast to the rapidly increasing population. This study aims to find willingness of Turkish consumers to pay for a MarketMaker website – an electronic trading platform of traditional products in Turkey. The estimations rely on data collected from 157 persons covering all regions in Turkey through an online survey in August, 2015. The average willingness to pay (WTP) annually was found to be about 32 Turkish Liras (TRY) for all observations including zero bids and TRY 164 excluding zero bids. The results of the probit model show that age, marital status and shopping in traditional food markets were identified by the model to have a significant impact on the probability of WTP.
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