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Rule Weight Use in Bioinformatics Data Classification
No full textThis article studies the possible application of fuzzy classification methods that use rule weights in classification of bioinformatics data, in particular, it uses algorithms Fuzzy Rule Learning Model, whose results are compared to those of Fuzzy Unordered Rule Induction Algorithm. To assess the benefits of approach specifics, the experiments were carried out using eleven real bioinformatics data sets provided by University of Ljubljana, Faculty of computer and information science Bioinformatics Laboratory on their home page. The article provides conclusions about the efficacy of rule weight assessment methods and outlines the course of future research
Lightning Performance on Transmission Line Towers
No full textA method of transmission tower models
construction for atmospheric overvoltages performance studies is presented. The overvoltage waves produce electric fields along the tower, the shielding wire and along the conductor. EMTP program has been selected as the software used to generate the fault data. The results show that EMTP is capable for analyzing lightning parameters in the transmission line towers structures. The conclusions of the calculation results
presented in this paper is, that the selected tower models can affect the overvoltages waves propagation on high voltage power network segments and its affect will change accordingly with the tower geometrical parameters
The Effect of Mineral Admixtures such as Coal and Wood Ashes on the Compressive Strength of Concrete
No full textLandfilling is becoming very restrictive due to shrinking landfill space and strict environmental regulations, CO2 emissions from cement industry must be reduced, thus substituting part of the cement clinker with by-products or waste materials such as coal/wood ashes is one of the solutions for these problems. Coal ash (CA) and wood ash (WA) are the residues generated due to combustion of coal/wood and coal/wood products. In present study coal/wood ashes and additionally ground coal/wood ashes for 30 min in laboratory planetary ball mill were used as partial substitution of cement at 3 levels 20, 30, and 40% in concrete mixes.
Standard testing sample 100×100×100mm cubes were produced. Two days later the samples were dismantled. Standard curing conditions (temperature 20±2oC, RH > 95±5%) were provided during the process of concrete hardening. Compressive strength of hardened concrete samples was determined at the age of 7, 28 and 56 days. Compression testing machine with the accuracy of ±1% was used, the rate of loading was 0.7 MPa/s (according to LVS EN 12390-3:2009 standard).
IEEE802.11n Standard's Capability to Support Wireless Device in Vehicular Environment
No full textMobile communication based on wireless local area network (WLAN) technology have potential to support automated guided vehicle and in the same time to obtain Internet connectivity for users in-motion. Wireless access for the vehicular environment based on IEEE802.11p technology provides the required principally standardization for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) solution, and supports raw data rate up to 27 Mbps. While devices based on IEEE802.11n technology for mobile users can provide data rate up to 600Mbps. In this article is presented an experimental study of IEEE802.11n in legacy mode settings compare to IEEE802.11g standard using off-the-shelf equipments in vehicle to infrastructure scenario. In particular, there is shown the performance of TCP transfer between a high mobile user and stationer WLAN base stations
Оценка скорости передачи данных между транспортными средствами и базовой станцией беспроводной сети
No full textВ статье представлены две математические модели. Первая используется
для определения числа подвижных объектов, в зависимости от удалённости
до базовой станции транспортной беспроводной сети. На базе реальных
данных, полученных в результате экспериментов, была разработана вторая
модель, которая была использована для определения реальной скорости пе-
редачи данных в беспроводной транспортной сети в зависимости от числа
N движущихся объектов, пребывающих в зоне действия базовой станции
Analysis Maritime Spatial Planning Efficiency in Development of Wind Energy on the Western Coast of Latvia
No full textWind energy due to the wide spread availability of its resource is one of the most perspective of the renewable energy types, the wind which can be used to produce power in an environment friendly way. The most suitable placement of wind turbines is in sea or on the coast. “BaltSeaPlan” is the maritime spatial planning pilot project of Baltic coast of Courland that intends a construction of offshore wind farms on the West coast of Latvia, but due to insufficient political support this territory is not utilized and the development of wind energy in Latvia is hindered
Robust Dimensionality Reduction in Bioinformatics Data
No full textThis article proposes a technique to reduce data dimensionality in bioinformatics tasks. In the cases where there
are thousands of attributes and only few hundred instances even the scalable classification methods benefit from
diminishing the number of features. But at the moment there is no way of finding the best feature selection and evaluation
method for a particular data set and the performance of these methods varies a lot depending on the specific nature of a
data set. Therefore it is necessary to find a robust technique that would perform the process of feature selection without the
impact of a specific method. The system proposed in this article minimizes this effect while still producing highly informative
feature subsets that are easier to comprehend, interpret and use in classification
Управление проектами внедрения системы экологического менеджмента в международной корпорации
No full textВ статье рассмотрены основные понятия экологического менеджмента, систем экологического менеджмента (СЭМ) и управления проэктами. Определено понятие международной корпорации. Предложена организационная структура управления проектом по внедрению СЭМ
Classical аnd Contemporary Role оf а Latvian Bilateral Ambassador: Comparative Analysis
No full textIn the article the author compares the functions of a
diplomatic mission in the classical and contemporary
understanding. The aim is to show how the role of an Embassy
has changed and what are the new tasks for an Ambassador.
The methodology of this paper is based on the classical
political analysis approach.
The author concludes that diplomacy has transformed and in
some aspects has even become deeper and more important.
Therefore, one should not talk about the decline of the diplomatic
job, simply in the 21st century bilateral diplomacy has to be
practiced in a new style
Studentu vecuma īpatnības kā pamats attieksmes pret augtskolas mācību vidi veidošanā
No full textAutors analīzē augstskolu studentu attieksmes
pret studijām aktuālās problēmas un tendences. Darba
uzmanības centrā ir dialektiskā saikne starp augstskolu mācību
vidi kā studentu darbības ietekmējošo faktoru un viņu attieksmi
pret studijām. Problēmas izpētes priekšnosacījums – studenta kā
personības, noteikta vecuma cilvēka, attiecīgas sociālās lomas
izpildītāja vispusīga analīze. Autors pievērš uzmanību divu
veidu faktoriem, kas nosaka studenta personības sociāli
psiholoģisko portretu un ietekmē veiksmīgas studijas augstskolā,
tie ir attieksme pret studijām un augstskolas mācību vides
kvalitāte