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Mūsdienu publiskā bibliotēka Latvijas pagastos
2009
Mūsdienu publiskā bibliotēka Latvijas pagastos Anotācija Atslēgvārdi: publiskā bibliotēka, sociālekonomiskā vide, kultūrvide, daudzfunkcionalitāte, sadarbība. Promocijas darbā tiek atklāta Latvijas pagastu pašvaldību pārziņā esošo publisko bibliotēku situācija 20.gadsimta beigās un 21.gadsimta sākumā (pētījuma periods no 1997.gada līdz 2007.gadam). Temata izvēles iemesli: bibliotēku darbību reglamentējošos dokumentos un likumdošanā uzsvērtie nosacījumi, kas skar tieši lauku reģionu sabiedrības apkalpošanu; pozitīvas pārmaiņas veicinošais potenciāls, kas piemīt pagastu bibliotēkām. Pagastu bibliotēkas ir informācijas, izglītības un kultūras iestādes, kas, sniedzot savus pakalpojumus viet…
Pointer years in tree-ring width and earlywood-vessel area time series of Quercus robur—Relation with climate factors near its northern distribution …
2013
Abstract For a long time, radial growth of pedunculate oak (Quercus robur) in relation to environmental factors has been studied in Central Europe. However, there is insufficient information on oak growth in the Baltic region. Climate–growth interactions have been mostly investigated by correlation/response analysis between ring width and climatic factors. Other wood anatomical proxies, and also pointer year analysis, which focuses on weather extremes, can be sources of additional information. Wood samples were taken from 40 sites across Latvia. Tree-ring width (TRW) and mean area of earlywood vessels (EVA) were measured. To assess differences in wood formation among sites, a PCA was perfor…
Frictionless contact-detachment analysis: iterative linear complementarity and quadratic programming approaches.
2012
The object of the paper concerns a consistent formulation of the classical Signorini’s theory regarding the frictionless contact problem between two elastic bodies in the hypothesis of small displacements and strains. The employment of the symmetric Galerkin boundary element method, based on boundary discrete quantities, makes it possible to distinguish two different boundary types, one in contact as the zone of potential detachment, called the real boundary, the other detached as the zone of potential contact, called the virtual boundary. The contact-detachment problem is decomposed into two sub-problems: one is purely elastic, the other regards the contact condition. Following this method…
Trunk Packing Revisited
2007
For trunk packing problems only few approximation schemes are known, mostly designed for the European standard DIN 70020 [6] with equally sized boxes [8, 9, 11, 12]. In this paper two discretized approaches for the US standard SAE J1100 [10] are presented, which make use of different box sizes. An exact branch-and-bound algorithm for weighted independent sets on graphs is given, using the special structure of the SAE standard. Another branch-and-bound packing algorithm using linear programs is presented. With these algorithms axis-oriented packings of different box sizes in an arbitrary trunk geometry can be computed efficiently.
Selectivity in Probabilistic Causality: Where Psychology Runs Into Quantum Physics
2011
Given a set of several inputs into a system (e.g., independent variables characterizing stimuli) and a set of several stochastically non-independent outputs (e.g., random variables describing different aspects of responses), how can one determine, for each of the outputs, which of the inputs it is influenced by? The problem has applications ranging from modeling pairwise comparisons to reconstructing mental processing architectures to conjoint testing. A necessary and sufficient condition for a given pattern of selective influences is provided by the Joint Distribution Criterion, according to which the problem of "what influences what" is equivalent to that of the existence of a joint distr…
Connected and Autonomous Vehicles cooperate with the pedestrian in industrial sites based on trajectory optimization and vehicle signalization system
2020
Connected and autonomous vehicles (CAV) is the development trend in the field of transportation systems. Recent studies show that the resources sharing between pedestrians and CAV is a big challenge. Considering traffic safety and efficiency at that sharing point not only requires a collision avoidance system but also more communicative behaviors of the CAV. More precisely, pedestrian needs to understand the intention of the incoming CAV whether it will cross first or not according to its speed profile. This paper uses the optimal trajectory control to provide CAV with a communicative behavior. A scenario where CAV and pedestrian cooperate together to cross a conflict zone is studied. A com…
A Linear Programming Method for Bounding Plastic Deformations
1988
A method for providing upper and lower bounds to plastic deformations is presented, which has the feature of being applicable both below and above the structure shakedown limit. The bounds provided are expressed in terms of some fictitious plastic strains obeying relaxed yielding laws, whose evaluation is made by means of a suitable LP-based algorithm.
Recent Developments in our Approach to Multiple-Criteria Decision Making
1984
Approximately ten years ago we began a study of multiple criteria decision making at the European Insti tute for Advanced Studies in Management in Brussels. The project started as a way of finding a multiple objective linear programming method that would work better than those tested by Wallenius (1975). We did a substantial amount of work on the problem and came up with such a method (Zionts and Wallenius, 1976). Wallenius’ (1975) thesis, one of the first outputs of that project, comprises a rather significant piece of research in the multiple criteria area. Since that time our work has continued. We have worked together on a great deal of it; some of it has involved students and other fac…
From noticing to initiating correction: Students’ epistemic displays in instructional interaction
2014
Abstract By drawing on conversation analysis and the analysis of embodiment-in-interaction, this article describes students’ locally situated, interactional practices of demonstrating knowledge in teacher-led instructional interaction in the English lessons of a Content-and-Language-Integrated-Learning (CLIL) class. It focuses on students’ correction initiations that are preceded by embodied noticings – interactional events that are performed through different kinds of visibly intensified embodied and material practices. The analysis demonstrates how the embodied noticings serve as a preamble to the ensuing correction initiation and help project participant's stance toward the noticed featu…
Social organization through teacher-talk: Subteaching, socialization and the normative use of language in a multilingual primary class
2012
Abstract The present study explores the ways in which peers take up a teacher-like discourse to enforce normative uses of language in a classroom, effectively socializing one another to the institutional use of English which in turn signals class membership. Such an uptake of teacher-like discourses and practices can be characterized as subteaching ( Tholander & Aronsson, 2003 ). Data are drawn from an ethnographic study spanning the first and second grade for a group of students enrolled in English medium education in Finland, and the analysis centers on transcripts of classroom interaction. Findings indicate that students draw on subteaching actions to negotiate alignments and to sanction…