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Generation of a test reference year for Liepāja, Latvia
2016
Ruduks, M., Latvia Univ. of Agriculture, Jelgava (Latvia) | Lesinskis, A., Riga Technical Univ. (Latvia)
Actual and reliable meteorological data are necessary for building performance analysis. Since meteorological conditions vary significantly from year to year, there is a need to create a test reference year (TRY), to represent the long-term weather conditions over a year. In this paper TRY data model was generated by analysing every 3-hour weather data for a 30-year period (1984 – 2013) in Liepāja, Latvia, provided by the Latvian Environment Geology and Meteorology Centre (LEGMC). TRY model was generated according to standard LVS EN ISO 15927-4. The generated TRY contains from typical months that are included in TRY from a number of different years. The data gathered from TRY was compared with the climate data from the Latvian Cabinet of Ministers regulation No. 379, Regulations Regarding Latvian Building Code LBN 003-15. Average monthly temperature values in LBN 003-15 were lower than the TRY values that indicate on climate changes in this location. The results of this study may be used in building energy simulations and heating-cooling load calculations for selected region. TRY selection process should include the latest meteorological observations and should be periodically renewed to reflect the long-term climate change.
显示更多 [+] 显示较少 [-]Quaternary groundwater vulnerability assessment in Latvia using multivariate statistical analysis
2016
Retike, I., University of Latvia, Riga (Latvia);Latvian Environment, Geology and Meteorology Centre, Riga (Latvia) | Delina, A., University of Latvia, Riga (Latvia) | Bikse, J., University of Latvia, Riga (Latvia) | Kalvans, A., University of Latvia, Riga (Latvia) | Popovs, K., University of Latvia, Riga (Latvia) | Pipira, D., University of Latvia, Riga (Latvia);Latvian Environment, Geology and Meteorology Centre, Riga (Latvia)
Groundwater is the main drinking water source in Latvia, and Quaternary groundwater is widely used in households due to shallow occurrence. The identification of vulnerable areas is important for better water management and protection of deeper, more intensively used aquifers. The existing groundwater vulnerability map of Latvia does not take into account land use which can be an important factor affecting natural groundwater quality. Multivariate statistical methods - principal component analysis (PCA) and hierarchical cluster analysis (HCA) - were applied to identify groundwater groups with distinct water quality in Quaternary sediments in Latvia. On the basis of major ion concentrations and nitrogen compounds four distinct groundwater groups were identified. First group represents natural and most common calcium- magnesium bicarbonate water type in Latvia with low nitrate and ammonium concentrations. Samples from second and third group both reflect anthropogenic influence: diffuse agricultural contamination mostly with nitrates and/or contamination derived from artificial surfaces. Fourth group belongs to calcium bicarbonate water type and is characterised as a very young groundwater formed in sandy deposits. The results show that the highest concentrations of nitrogen compounds can be found in areas with agricultural land use or in artificial surfaces which are often classified as medium low or low vulnerability areas (mostly samples from group two and three). Meanwhile the lowest values of nitrogen compounds are present in areas where dominant land covers are forests and semi-natural areas or wetlands, and groundwater vulnerability classes are medium to high (samples from the first and fourth group).
显示更多 [+] 显示较少 [-]Surface water - groundwater interaction in the Salaca drainage basin using stable isotope analysis
2016
Babre, A., University of Latvia, Riga (Latvia) | Kalvans, A., University of Latvia, Riga (Latvia) | Popovs, K., University of Latvia, Riga (Latvia) | Delina, A., University of Latvia, Riga (Latvia) | Retike, I., University of Latvia, Riga (Latvia) | Bikse, J., University of Latvia, Riga (Latvia)
This paper presents first results of monthly water stable isotope monitoring programme covering the most important surface and groundwater types in the Salaca River basin. The aim is to characterise the isotopic values of different water types in the Salaca River basin, and test if their contribution can be identified in the Salaca river runoff. A monthly groundwater and surface water stable isotope monitoring programme was initiated in August 2015 covering the most of the important surface and groundwater types in the study region – groundwater and surface water in the raised bogs, free-surface groundwater including artificially drained agricultural lands, water emerging from the Lake Burtnieks as well as Burtnieks and Arulika confined aquifers. Preliminary results show that stable isotopes are useful tool to identify distinct water components and their evolution. However, it is needed to continue monitoring programme to draw significant conclusions.
显示更多 [+] 显示较少 [-]Ground-penetrating radar (GPR) screening in shallow Engure and Pape lagoon lakes
2016
Purmalis, O., University of Latvia, Riga (Latvia);Institute for Environmental Solutions, Riga (Latvia) | Alksnis, A., Institute for Environmental Solutions, Riga (Latvia) | Taskovs, J., Institute for Environmental Solutions, Riga (Latvia) | Burlakovs, J., University of Latvia, Riga (Latvia);Linnaeus University (Sweden). Faculty of Health and Life Sciences
Geophysical studies in mapping and screening applications are widely applied for archaeological, environmental, geological, hydrological and many other applications. Ground-penetrating radar (GPR) is one of methods from geophysical toolbox that is also called a ground-probing radar, subsurface radar, surface-penetrating radar and ‘georadar’ or impulse radar – it is a non-invasive and non-destructive technique. Pulsed electromagnetic signal is recording the reflected energy and scattering from subsurface objects. Studies were performed in former Littorina Sea lagoons that became lakes after the further Limnea Sea stage in the Baltic Sea established with comparatively lower absolute sea level that is close to present day situation. Characterization of sediments as well as full sediment core description for comparison with GPR signals were performed. Major results show that GPR as non-destructive method in combination with geological coring followed by laboratory analysis of sediment properties can be successfully used to describe layering conditions, topography and depth of shallow lakes. Although there are some limitations regarding the electromagnetic (EM) noise and similar EM properties of analysed sediments, proper treatment of data gives complementary insight thus diminishing the necessity of dense coring network establishments in analysed areas of lakes. The aim of this screening study is to analyse potential advantages of GPR use for mapping sediments and topography of sandy bottom in shallow lagoon lakes as well as pinpoint problems during field and cameral works considering electromagnetic, geological and topographical disturbances.
显示更多 [+] 显示较少 [-]The role of digitized services to improve international activities of banks
2016
Kliedere, E., Latectus, Ltd., Valdlauci, Kekava parish, Kekava Municipality (Latvia) | Jurgelane, I., Riga Technical Univ. (Latvia)
Due to the globalization, the financial sector has undergone major changes in the way services are provided and delivered. Customers increasingly prefer to receive services remotely, which is a more convenient and faster way, but the majority of European banks are not ready to provide it. 90% of European banks invest less than 0.5% of total spending on service digitization; therefore, only 20 – 40% of the processes are digitized. The service digitization can be a major challenge for banks in the future. Only banks that provide a full range of digitized services will be able to increase profitability and revenues and reduce costs. Therefore, it is necessary to analyse the satisfaction of international corporate customers and define the role of digitized services to improve international activities of banks. Quantitative and qualitative research methods, including the statistical data analysis, graphical analysis, linear and multiple regression analysis, correlation, comparison and grouping methods, as well as survey have been used for the research, and SPSS 20 has been used for data processing. So far there are no analyses of the digitized services in Latvia that would be based on international customer experience and needs. The results of the research concluded that the higher usefulness indicator, the higher is the possibility that international corporate customers will continue to use internet banking services. The digitized services strategy ensures the availability of essential daily digitized services in internet banking and ensures the savings in time and in financial resources for the bank and its international corporate customers.
显示更多 [+] 显示较少 [-]Revitalized agriculture for balanced growth and resilient livelihoods: Toward a rural development strategy for Mon State
2016
Center for Economic and Social Development | International Food Policy Research Institute | Michigan State University
The purpose of this report is to provide national- and state-level policymakers, private-sector investors, civil society, and donors with an analysis of the rural economy of Mon State and pathways to improved prosperity for its population. The analysis is based on a representative survey of rural households, which make up 73 percent of Mon State’s 2 million residents, and extensive interviews with farmers, traders, processors, local leaders, and government officials. Whereas some parts of the Mon State economy are quite dynamic, such as construction, others are stagnant and far from reaching their full potential. Furthermore, the dynamic sectors are heavily dependent on remittances from migrants to neighboring countries. The current pattern of donor investment is heavily focused on necessary infrastructure and energy investments, but with only very limited support to productive sectors, especially agriculture and fisheries. Major investments in education, both formal and vocational training, are also necessary to support the growth of a modern economy. The analysis in this report identifies options for more balanced growth, leading to a vibrant economy in which returning migrants can invest and find employment.
显示更多 [+] 显示较少 [-]Value-chain development for rural poverty reduction: a reality check and a warning
2016
Stoian, D. | Donovan, J. | Fisk, J. | Muldoon, M.
This chapter draws attention to the link between VCD and smallholder livelihood strategies that comprise a complex mix of subsistence and market-oriented activities and that are diversified to meet multiple livelihood goals and mitigate risks; and the authors address the related implications for the design and assessment of value-chain interventions. They question some of the underlying assumptions of NGOs, government agencies, and private-sector agents seeking to link smallholders to higher-value markets.
显示更多 [+] 显示较少 [-]Value-chain development for rural poverty reduction: A reality check and a warning
2016
Stoian, Dietmar | Donovan, Jason | Fisk, John | Muldoon, Michelle F.
Chapter 2 (Stoian et al.) draws attention to the link between VCD and smallholder livelihood strategies that comprise a complex mix of subsistence and market-oriented activities and that are diversified to meet multiple livelihood goals and mitigate risks; and the authors address the related implications for the design and assessment of value-chain interventions. They question some of the underlying assumptions of NGOs, government agencies, and private-sector agents seeking to link smallholders to higher-value markets
显示更多 [+] 显示较少 [-]Rural livelihoods in Mon State: Evidence from a representative household survey
2016
Myanmar Centre for Economic and Social Development | International Food Policy Research Institute | Michigan State University | Hein, Aung | Htoo, Kyan | Kham, L. Seng | Win, Myat Thida | Thinzar, Aye Mya | Naing, Zaw Min | Thida, Mi Win | Lei, Ni | Min, Lu | Mwee, Naw Eh | Oo, Zaw | Filipski, Mateusz J. | Nischan, Ulrike | Van Asselt, Joanna | Holtemeyer, Brian | Schmidt, Emily | Kedir, Mekamu | Kennedy, Adam | Zhang, Xiaobo | Dorosh, Paul A. | Payongayong, Ellen | Belton, Ben | Boughton, Duncan
The purpose of this report is to provide information and analysis to government, civil society, and donors interested in improving the well-being of the rural population of Mon State. Specifically, the report analyzes the different sources of income for rural households, as well as their socioeconomic characteristics, with a view to identifying potential pathways to improving incomes, especially for poor households, and stimulating inclusive rural growth. The overall picture that emerges is one of an economy heavily dependent on services for local employment and on international migration for income. Like a two-legged stool, such an economy is potentially unstable in the face of external shocks. Diversification of the Mon State economy, including diversification and increased productivity within the agricultural sector, will lessen the relative dependence on external migration remittances and result in more resilient growth in the future
显示更多 [+] 显示较少 [-]Devolution in Pakistan: Implications for agriculture and rural development
2016
Resnick, Danielle | Rana, Abdul Wajid