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A. Mutule and O. Kochukov

References 1. M. Buygi, G. Balzer, H. Shanechi, & M. Shahidehpour (Nov. 2004). Market-based transmission expansion planning. IEEE Trans. on Power Syst., 19 (4). 2. Krishans, Z., Mutule, A., Merkuriev, Y., & Oleinikova, I. (2011). Dynamic Management of Sustainable Development. Springer (Germany). 3. Nordpool spot market historical data. [Online]. Available: http://www.nordpoolspot.com/Market-data1/Downloads/Historical-Data-Download1/Data-Download-Page/ [Accessed April 19, 2013] 4. U.S. Energy

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V. Grekhov, J. Kalnacs, A. Murashov and A. Vilken

References Kratschmer, W., Lamb, L., Fostiropoulos, K., & Huffman, D. (1990). Nature , 347, 354-358. Елецкий, А.В. (2004). УФН , 174 , 1191-1231. Song, X., Liu, Y., & Zhu J. (2006). Carbon, 44 , 1581-1616. Alekseyev N. I., & Dyuzhev, G. A. (2003). Carbon , 41, 1343-1348. Schiith, F., Sing, K. S. W., & Weitkamp, J. (ed-s). (2002). Handbook of Porous Solids. Weinheim (Germany): WILEY-VCH Verlag GmbH, 69469

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A. Snegirjovs, P. Shipkovs, K. Lebedeva, G. Kashkarova, L. Migla, P. Gantenbein and L. Omlin

REFERENCES 1. Snegirjovs, A., Gantenbein, P., Omlin, L., and Shipkovs, P. (2015). Improved model of combined PV solar cooling and free cooling system. 6 th International Conference on Solar Air-Conditioning , 162–167. Regensburg, Germany: OTTI. 2. Statistical information centre – Eurostat . Available at www.ec.europa.eu/eurostat 3. Truong, N. L., and Gustavsson, L. (2014). Cost and primary energy efficiency of small-scale district heating systems. Applied Energy, 130 , 419–427. 4. Hummon, M., Denholm, P., and Jorgenson J. (2013

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M. Maltisovs, K. Krumins, A. Ozols and D. Pikulins

REFERENCES 1. Wong, K. V., & Chan, R. (2013). Smart glass and its potential in energy savings. Journal of Energy Resources Technology , 136 (1), 12002. https://doi.org/10.1115/1.4024768 2. Goodby, J. W., Collings, P. J., Kato, T., Tschierske, C., Gleeson, H. F., & Raynes, P. (2014b). Handbook of liquid crystals. Volume 2: Physical properties and phase behavior of liquid crystals . Boschstr. 12, 69469 Weinheim, Germany: Wiley-VCH Verlag & Co. KGaA. Available at https://www.wiley.com/en-lv/Handbook+of+Liquid+Crystals%2C+8+Volume+Set%2C+2nd

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R. Smigins and P. Shipkovs

of energy from renewable energy sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC (2009, Brussels). 4. Ministry of Economics. Information report on the situation in biofuel production sector 2012. (in Latvian) 5. German, L., & Schoneneveld, (2012). A review of social sustainability considerations among EU-approved voluntary schemes for biofuels, with implications for rural livelihoods. Energy Policy, 51, 765-778. 6. Gulbis, V., & Smigins, R. (2005). Biofuels in Latvia - present state

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A. Andreičiks, I. Steiks and O. Krievs

. Engin. Performance, 13, 3257-264, New York. 4. De Caro, S., Testa, A., Triolo, D., Cacciato, M. & Consoli, A. (2005). Low Input Current Ripple Converters for Fuel Cell Power Units. In: Proc. Hard Switching Converters and Control. EPE (Germany). 5. Mohan, N., Undeland, T., & Robbins W.P. (2003). Power Electronics. Converters, Applications and Design . John Wiley & Sons. 6. Erickson, R.W., & Maksimovic, D. (2001). Fundamentals of Power Electronics. C hapman & Hall. 7. Andreičiks, A., Steiks, I

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J. Survilo

renewable energy sources. Structure and data concerning electrical grids for Italy, Germany, Spain, UK, Poland. www.iset.uni-kassel.de/dispower Vanags, A. (2007). Elektriskie tīkli un sistēmas. Rīga: RTU (in Latvian). Krišāns, Z., & Oļeiņikova, I. (2007). Elektroenergētisko uzņēmumu vadības pamati. Riga: RTU (in Latvian). Guseva, S., Skobeļeva, N., Brenners, N., & Borščevskis, O. (2009). Modelling of service zones of urban transformer substations. Scientific proceedings of Riga Technical

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G. Klāvs, A. Kundziņa and I. Kudrenickis

://www.em.gov.lv/lv/nozares_politika/atjaunojama_energija_un_kogeneracija/informacija_par_izdotajiem_lemumiem_par_elektroenergijas_obligato_iepirkumu/ 7. Sorda, G., Sunak, Y., and Madlener, R. (2013). An agent-based spatial simulation to evaluate the promotion of electricity from agricultural biogas plants in Germany. Ecological Economics 89 , 43–60. 8. Central Statistical Bureau of Republic of Latvia, (n.d.). Statistics Database: LAG015 “Sown area of agriculture crops” . Available at http://data.csb.gov.lv/pxweb/en/lauks/lauks__ikgad__03Augk/?tablelist=true&rxid=cdcb978c-22b0-416a-aacc-aa650d3e2ce0 9. Communication from the Commission. (2014). Guidelines on State aid for environmental protection

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A. Skorodumovs, E Avots, J Hofmanis and G. Korāts

REFERENCES 4. Hornbrook, M. C., Stevens, V. J., Wingfield, D. J., Hollis, J. F., Greenlick, M. R., and M. G. Ory. (1994). Preventing falls among community-dwelling older persons: results from a randomized trial. The Gerontologist 34 (1), 16–23. 5. Heinze, C., Halfens, R. J. G. and Dassen, T. (2007). Falls in German in-patients and residents over 65 years of age. Journal of Clinical Nursing 16.3 , 495–501. 6. Brownsell, S.J., Bradley, D.A., Bragg, R., Catlin, P., and Carlier, J. (2000). Do community alarm users want telecare? Journal of

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R. Dobriyan, S. Vitolina, L. Lavrinovicha and J. Dirba

shaded pole motor with application of finite elements method. In XX URSI Commission B international symposium on electromagnetic theory, Aug. 2010 (pp. 97-100), Berlin, Germany. 10. Lopez-Fernandez, X.M., & Gyselink, J. (2006). Finite element analysis of outer-rotor permanent magnet brushless DC motor for light traction. COMPEL., 25, 705-712. 11. Kanter, V.K. (1983). Parameters and characteristics of salient-pole synchronous machines with a saturated magnetic core in steady-state symmetric modes. Riga: Zinatne (in Latvian