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Impact of high-pressure impregnation and fire protective coatings on the reaction to fire performance of birch plywood
2021
Rudzite, S., Latvijas Finieris, JSC, Riga (Latvia) | Buksans, E., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
Birch plywood has a wide range of applications for interior and exterior use. The demand for plywood with improved fire protection properties and good visual appearance is increasing year by year. The impregnation at high pressure of the whole plywood panels is one of the options to achieve it. The aim of this study was to develop good visual looking birch plywood product for interior design purposes as well evaluate different influencing factors to reaction to fire properties of fire-retardant treated birch plywood. This study consists of three parts. At the first stage, high pressure industrially impregnated plywood properties were studied by two influencing factors – distribution of fire retardant in plywood panel plane and sanding process influence on reaction to fire performance of product. At the second stage, seven different industrial finishing systems were selected for covering high-pressure impregnated birch plywood and their effect on fire reaction performance was studied. In addition, two surface coating systems were studied on standard birch plywood substrate. At the third stage, intumescent coating consumption effect on reaction to fire performance was studied. The reaction to fire performance of birch plywood was evaluated by performing a flammability test using the Single Burning Item test according to EN 13823:2010. It was found that high pressure impregnation of plywood cannot ensure even saturation of fire retardant throughout the sheet, which significantly affects the fire performance of product. The impact of different finishing materials to reaction to fire performance has been described by the results of this research.
显示更多 [+] 显示较少 [-]Status of the precision beekeeping development in Latvia
2021
Zacepins, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Kviesis, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Komasilovs, V. | Brusbardis, V., Latvian Beekeeping Association, Jelgava (Latvia) | Kronbergs, J., Latvian Beekeeping Association, Jelgava (Latvia);BeeTech Services, SIA, Riga (Latvia)
Information and communication technologies are part of almost any branch of human lives. During the last decade also beekeeping joined the direction of application of IT tools and solutions and precision beekeeping was defined. Still in the beekeeping many operations and observations are completed manually, and there is a potential to switch to the digital realisation. Information technologies can be used in the beekeeping to partly support the beekeepers by implementation of automatic or semi-automatic solutions for bee colony remote monitoring, apiary record making and other actions. The aim of this paper is to make a summary of the usage of information technology tools by the beekeepers in Latvia, summarizing precision beekeeping development status and conclude about its future development potential. To achieve this aim, in cooperation with Latvian Beekeepers Association, a beekeepers survey was conducted. More than 200 beekeepers shared thoughts and opinions about their application of information and communication technologies for monitoring the bee colonies and apiary management. The summary of the survey conducted is described in this study.
显示更多 [+] 显示较少 [-]Awareness of integrated soil fertility management practices in the Savelugu Municipal of the Northern Region of Ghana
2020
Abukari, A., University for Development Studies, Tamale (Ghana). Faculty of Natural Resources and Environment | Abukari, R., University of Ghana, Legon (Ghana). College of Humanities. Inst. of Statistical, Social and Economic Research
In sub-Saharan Africa intensifying small-scale farming is essential in addressing poverty related issues in rural communities and the degradation of natural resources. Integrated Soil Fertility Management (ISFM) are the best practices used to improve the productivity of crops whilst maximizing agronomic efficiency of inputs applied and hence contributing to sustainable intensification. ISFM usually include the appropriate use of inorganic fertilizer and organic resources, good agronomic practices and appropriate use of germplasm. The survey was carried-out on the awareness of Integrated Soil Fertility Management practices in the Savelugu Municipal of Northern Ghana to study the awareness of integrated soil fertility management practices amongst farmers through the administration of questionnaires. A multistage method of sampling was used in selecting thirty (30) respondents randomly from five (5) selected communities namely Jana, Yapalsi, Diari, Nabogu and Gushie to make up a total sample size of 150 respondents. Frequency distribution and percentages were used to represent the data. Correlation analysis was used to test for the relationship between awareness, educational level and household size. The survey showed that majority of the respondents at ages between 21 and 30 years were married and majority with household size of 3 to 5 as well as primary and secondary education. Farming activities were carried-out by hand (80%). Majority of the respondents (43.3%) were informed about ISFM through demonstrations and 20% of the farmers apply inorganic fertilizer. About 85.5% of the respondents were aware of ISFM. The research also revealed that ISFM improves production and supports finances of respondents. The assessment of respondents’ perception of ISFM revealed a positive agreement of the effect of ISFM on soil health as well as improved production. In conclusion, it is thus suggested that it is needful for the involvement of the government on the adoption of ISFM via Non-Governmental Organisations (NGOs) locally and or internationally for a suitable advancement and to guarantee a sustainable environment with a world-wide corporation for improvement.
显示更多 [+] 显示较少 [-]An AHP [Analytic Hierarchy Process] – based assessment of scenarios for promoting employment of people with disabilities in Latvia
2020
Oborenko, Z., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Economics and Social Development | Rivza, B., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Economics and Social Development | Rivza, P., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Information Technologies
The employment of people with disabilities has multidimensional aspects − economic, social, legal, human rights, discrimination, psychological, ethical and responsibility aspects − with different actors involved representing various kinds of interests. The European Union Disability Action Plan and Strategy specifies the objective of promoting the employment of people with disabilities in the open labour market. The employment of such individuals is not only an economic issue, but also an issue of social inclusion, poverty reduction, equal opportunity and socially responsible employment. Effective and fair use of human resources for national economic development requires a variety of support mechanisms, including regulatory frameworks, the active involvement of local municipalities, and measures taken by state institutions. Because of the different issues and the various actors with different interests involved, an integrated way has to be considered to analyse the employment factors and employment opportunities for people with disabilities. The purpose of this study is to explore and substantiate the possible scenarios associated with promotion employment opportunities for people with disabilities in Latvia. The research methodology employed for this study is based on the Analytic Hierarchy Process, and expert interviews are used to analyse the interests of all involved parties, in order to determine the best possible scenarios as to how to stimulate employment for people with disabilities. As a result, three scenarios to promote the employment of people with disabilities were developed. Although the results showed slight differences between the three scenarios, experts believe that the optimal scenario for promoting the employment of people with disabilities is the one in which the EU participates.
显示更多 [+] 显示较少 [-]Civil engineering inspection for real estate evaluation with the use of artificial learning algorithms and fuzzy logic
2020
Surgelas, V., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Environment and Civil Engineering | Arhipova, I., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Information Technologies | Pukite, V., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Environment and Civil Engineering
The technical inspection of a building carried out by an expert in civil engineering can identify and classify the physical conditions of the real estate; this generates relevant information for the protection and safety of users. Given the real conditions of the property, and for the real estate valuation universe, using artificial intelligence and fuzzy logic, it is possible to obtain the market price associated with the physical conditions of the building. The objective of this experiment is to develop a property evaluation model using a civil engineering inspection form associated with artificial intelligence, and fuzzy logic, and also compare with market value to verify the applicability of this inspection form. Therefore, the methodology used is based on technical inspection of civil engineering regarding the state of conservation of properties according to the model used in Portugal and adapted to the reality of Latvia. Artificial intelligence is applied after obtaining data from that report. From this, association rules are obtained, which are used in the diffuse logic to obtain the price of the apartment per square meter, and for comparison with the market value. For this purpose, 48 samples of residential apartments located in the city of Jelgava in Latvia are used, with an inspection carried out from October to December 2019. The main result is the 9% error metric, which demonstrates the possibility of applying the method proposed in this experiment. Thus, for each apartment sample consulted, it resulted in the state of conservation and a market value associated.
显示更多 [+] 显示较少 [-]Age structure of farm owners and managers: problems and the solutions thereto in Latvia
2020
Nipers, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Pilvere, I., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
The research paper presents the results of research on the situation and trends in the age structure of farm owners or managers in Latvia. The growing world population and the challenges caused by climate change make farmers reconsider their traditional farming practices. Therefore, scientists believe that the aging of farmers is a major obstacle to the sustainable development of agriculture and rural areas, as evidenced by the age structure of European Union (EU) farmers and other agricultural workers. Generation renewal is crucial for sustainable land management and food production. In 2018, according to statistical data, the share of agriculture, forestry and fisheries in total gross value added in Latvia was only 3.8%. However, these sectors were the main job creators and drivers of economic development in rural areas. Therefore, the aim of the present research is to assess trends in the age structure of farm managers and owners and the policy instruments applied in Latvia. The results of the research show that despite the policy instruments implemented in Latvia after its accession to the EU to support young farmers and promote early retirement of farm owners, the aging process of farm owners and managers occurs relatively fast. The median age of farm owners and managers in Latvia has increased from 53 years in 2009 to 57 years in 2019, which could hinder the development of the agricultural industry and prevent the new challenge of growing global food demand and the negative impacts of climate change from being tackled.
显示更多 [+] 显示较少 [-]Theoretical studies of the vibration process of the dryer for waste of food
2020
Bulgakov, V., National Univ. of Life and Environmental Sciences of Ukraine, Kiev (Ukraine) | Sevostianov, I., Vinnytsia National Agrarian Univ. (Ukraine) | Kaletnik, G., Vinnytsia National Agrarian Univ. (Ukraine) | Babyn, I., Vinnytsia National Agrarian Univ. (Ukraine) | Ivanovs, S., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Holovach, I., National Univ. of Life and Environmental Sciences of Ukraine, Kiev (Ukraine) | Ihnatiev, Ye., Dmytro Motornyi Tavria State Agrotechnological Univ., Melitopol, Zaporizhzhia obl.(Ukraine)
An urgent problem is drying and processing of the wet dispersed waste, obtained in the production of food products, which can then be efficiently used as a fertiliser, for feeding livestock or as biofuel. A new design of a vibrating fluidised bed dryer has been developed, which, with low energy consumption, provides a pre-set productivity and the required final moisture content. The process of vertical oscillations of the body of a vibration dryer, together with the food waste contained in it, is analysed analytically, the necessary equivalent scheme is built, on the basis of which differential equations of the vertical oscillations of the body are compiled, their analytical solutions are obtained, and a numerical calculation is performed on a PC using the developed program.
显示更多 [+] 显示较少 [-]Temperature and weight monitoring of the Apis Cerana bee colony Indonesia
2020
Kviesis, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Information Technologies. Dept. of Computer Systems | Zacepins, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Information Technologies. Dept. of Computer Systems | Komasilovs, V., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Information Technologies. Dept. of Computer Systems | Paramita, A.M., Labtek Indie, Bandung, West Java (Indonesia) | Muhammad, F.R., Labtek Indie, Bandung, West Java (Indonesia)
Remote and automatic monitoring of two Apis Cerana bee colonies was conducted in Indonesia to demonstrate precision beekeeping approach in that region. Successful implementation of the precision beekeeping system includes development of the bee colony monitoring hardware and software for data collection, analysis and visualisation. This paper focuses on development and installation of such systems at the private apiary in Indonesia. For bee colony monitoring at the apiary a developed monitoring unit was used, which is based on ESP microchip, and for the data storage SAMS data warehouse was used. The monitoring results showed that the choice of the location of the temperature sensor is important, as the temperature at the hive sides changes synchronously with the outside temperature. Also, feedback from the beekeeper is collected to further improve the system and monitoring process. This research is conducted within the SAMS – Smart Apiculture Management Services project, which is funded by the European Union within the H2020-ICT-39-2016-2017 call and with close collaboration with the local private beekeeper. To find out more, visit the project website https://sams-project.eu/.
显示更多 [+] 显示较少 [-]Agriculture policy scores of selected countries through the technique for order of preference (TOPSIS) method
2021
Madiyoh, A., Bursa Uludag Univ. (Turkey) | Turan, Ö., Bursa Uludag Univ. (Turkey) | Gürlük, S., Bursa Uludag Univ. (Turkey)
The purpose of this paper is to demonstrate the performance of agricultural sectors in the Association of Southeast Asian Nations (ASEAN) countries using selected criteria, to identify the deficiencies in agricultural policies, to explore competitive advantages and to guide food and nutrition policies. The analyses of this research use the secondary of time series data between the years 1967‒ 2016 from 10 countries including; Brunei Darussalam, Cambodia, Indonesia, Laos PDR, Malaysia, Myanmar, Philippines, Singapore, Thailand and Vietnam which are the member of ASEAN. This research uses the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method and the data used for the mentioned countries include the following criteria; total agricultural production value of the land, self-sufficiency of animal products criteria, self-sufficiency of crop products criteria, rural population rate, greenhouse gas emissions from agriculture, and value of foreign trade in agricultural products. The result of proximity coefficients calculated with the TOPSIS method, which according to the number of proximity and maximum benefit analysis should be done according to the order of preference. It is stated that Thailand, Philippines and Indonesia were the most successful countries in the agricultural policy performance in 1967. As for last decades, Malaysia became the most successful country in agricultural policy performance. We can infer from the results that Malay industrial sector triggered the agricultural sector by supplying financial investment atmosphere.
显示更多 [+] 显示较少 [-]Analysis of financial support instruments for social enterprises in Latvia
2021
Licite-Kurbe, L., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Gintere, D., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
Social enterprises have positive effect on sustainable development, and they have become an important instrument for solving social problems (especially in rural areas), as the national and local governments alone cannot solve all such problems. To foster the development of social entrepreneurship, Latvia has introduced several support instruments for social enterprises, which include tax relief, privileged procurement contracts, grants, as well as non-monetary kinds of support. However, social entrepreneurs often point out that support from the national and local governments is insufficient, while the support instruments stipulated in the Social Enterprise Law are not widely used. Therefore, the aim of the research is to analyse national and local government support instruments for social enterprises in Latvia. The research found that the most important financial instrument fostering the development of social entrepreneurship in Latvia is a grant scheme administered by the Ministry of Welfare and the JSC Development Finance Institution Altum, which is available in the range of EUR 5000 to 200 000 for investment and working capital. In the period 2017‒2020, 94 social entrepreneurship projects with a total budget of EUR 6 million were supported, which could be viewed as significant financial support. In contrast, immovable property tax relief, exemption from enterprise income tax (on profits) and relief from this tax for several categories of non-business expenses are considered by social entrepreneurs to be an insignificant kind of support. There is also lack of experience and practice regarding the inclusion of social criteria in public procurement in Latvia.
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