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Pauls Kampe and Architecture of Liepāja
No full textthe Art Nouveau buildings of Liepāja have a significant place in the architectural heritage of Latvia. In most cases, there is no precise data regarding their construction history, i.e., the year of construction, architect, etc. The newly discovered design for the building at Peldu iela 33 led to a series of hypothetical conclusions about the contribution made by architect Pauls Kampe to the city of Liepāja in the early 20th century
Synthesis and Biological Evaluation of Aziridin-1-yl Oximes as Potential Antitumor Agents
No full text
Case Study on Using Non-intrusive Load Monitoring System with Renewable Energy Sources in Intelligent Grid Applications
No full textThis paper identifies the problem of the non-intrusive load monitoring method of load disaggregation into separate appliances, when some local generators based on renewable energy sources are connected to the same grid, as they may be mismatched with loads variable in time. Three approaches of electrical energy consumption disaggregation from the energy generated from local renewable energy sources are described
Inclined Single Elasto-Plastic Fiber Pull Out of Elastic Volume with Friction
No full textIt is well known that the main disadvantage of concrete is
its low tensile strength. It has been proven by many
researchers that the overall behaviour of concrete can be
improved by the addition of fibers. A wide range of fibers is
used for the production of fiber reinforced concrete (steel,
plastic, glass, etc.). The positive effect of the fibers is not
obvious until the first crack occurs in the concrete. Increasing
the applied loads the matrix fracture process is initializing:
micro-cracks start to open to grow and to coalescent finally
forming one or few macro-cracks. The fibers are bridging the
crack
Effect of Augmented Reality Technology on Spatial Skills of Students
No full textSpatial skills are one of the factors of human intelligence structure. Development of
spatial skills in students is critically important for understanding the contents of
engineering graphics subjects. The aim of this study was to test an Augmented
Reality (AR) based applications that could influence on spatial ability of first year
students from Riga Technical University (RTU). A pre- and post-test was employed
using two intact classes of students which studied “Descriptive Geometry and
Engineering Graphics” subject. The treatment group learnt this subject carrying out
additional tasks of didactic AR based toolkit with aim to develop spatial skills during
their course, while the control group had their regular course
Industrial Development for Manufacturing Companies
No full textIn this paper the development for manufacturing companies is analysed based on historical review of competitive factors used by manufacturing industry. Development strategy is built understanding the development evolution. This allows us to identify important factors for performance improvements, using resource for improving strategy level and efficiency. Traditional strategy will be substituted by achieving certain competitive factors for sustainable development. Using this approach, author focuses on creating primary achievement and then on adding more sophisticated development factors known in the literature on competition and strategy development
Energy Consumption and Employee Productivity Investigation with Respect to Profit in Office Buildings
No full textEffects of indoor environmental quality on employee productivity and performance are well established in literature. However, further justification and quantification of costs for maintaining optimal indoor conditions for maximized employee productivity are necessary. This paper presents graphic-analytical approach to investigate the effects of indoor climate on energy consumption and productivity with respect to costs for maintaining optimal indoor air conditions in office buildings. Thermodynamic analysis of air conditioning processes is performed using statistical data for outdoor temperature and relative humidity. The economic evaluation is based on introduction of coefficients describing the price of heating and cooling energy and consumption of water, expressed as heat energy. Results are further plotted on Mollier (h-x) diagram confined with isolines of the levels for the combined energy consumption. Outdoor climate deviation from the optimal indoor air condition increases energy consumption and decreases the profit. Under the extreme outdoor conditions the air handling unit cannot maintain desired indoor temperature and humidity levels and employee productivity decreases, consequently leading to loss in total profit. The proposed approach can be used for optimization of operation of air handling equipment, and determination of maximum economically viable capacities of heating, cooling and humidification equipment, using profit as a criterion