Search results for "BED"
showing 10 items of 1605 documents
Scour on Alluvial Bed Downstream of Grade-Control Structures
2004
This paper describes an approach for predicting local scour downstream of grade control structures. The developed analysis applies the incomplete self-similarity (ISS) theory for deducing some physically based dimensionless groups controlling the geometrical pattern of the scour profile. The scour measurements available in the literature in conjunction with numerous unpublished data allow a multiregressive calibration of the ISS relationships. The experimental sample includes different bed grain-size distributions and scales of the erosive phenomenon. The results prove that the ratio between the upstream water head and the weir height is able to explain the measurements of scour depth carri…
Vienota tiesiska regulējuma normu nepieciešamība kapsētu uzturēšanas un apbedīšanas jomā
2020
Bakalaura darba tēma ir “Vienota tiesiska regulējuma normu nepieciešamība kapsētu uzturēšanas un apbedīšanas jomā”. Darba mērķis ir izpētīt, vai ir nepieciešams vienots regulējums apbedīšanas jomā, vai pietiek jau ar esošo normatīvo regulējumu. Darbā ir izpētītas un konstatētas galvenās Latvijas kapsētu problēmas un trūkumi. Apzināt esošā regulējuma problemātiku. Autore ir analizējusi literatūras avotus, normatīvos aktus, juridisko literatūru un tiesas spriedumos paustās tiesas atziņas. Darbs sastāv no četrām nodaļām un trīs apakšnodaļām. Pirmajā nodaļā aprakstīta normatīvajiem aktiem atbilstoša mirušo apbedīšana. Otrajā nodaļā analizēts normatīvais regulējums un pašvaldīb…
L'évolution paléoenvironnementale des faunes de poissons du Crétacé supérieur du bassin du Tafilalt et des régions avoisinantes (Sud-Est du Maroc) : …
2001
Abstract A critical revision of published data along with new field data allow to draw up the succession of the fish faunas from the Lower Cenomanian to the Lower Turonian in the Tafilalt basin and surrounding areas (southeast Morocco). The analysis of these faunas shows changes from freshwater to marine palaeoenvironments. The palaeogeographic distribution of some taxa is discussed. It shows that the crossing of strictly freshwater organisms between Africa and South America was likely impossible at the time of the formation of the deposits resting around the Tafilalt basin and named ‘Kem Kem beds’. The Cenomano-Turonian transgression reached the Erfoud–Errachidia carbonate platform from th…
Learning with the kernel signal to noise ratio
2012
This paper presents the application of the kernel signal to noise ratio (KSNR) in the context of feature extraction to general machine learning and signal processing domains. The proposed approach maximizes the signal variance while minimizes the estimated noise variance in a reproducing kernel Hilbert space (RKHS). The KSNR can be used in any kernel method to deal with correlated (possibly non-Gaussian) noise. We illustrate the method in nonlinear regression examples, dependence estimation and causal inference, nonlinear channel equalization, and nonlinear feature extraction from high-dimensional satellite images. Results show that the proposed KSNR yields more fitted solutions and extract…
Food loss and waste in food supply chains. A systematic literature review and framework development approach
2021
Abstract This study examines the state of the art of the literature in the domain of food loss and waste (FLW) in food supply chains (FSC). The authors used a systematic literature review (SLR) approach to examine and synthesise the findings of the existing literature to identify the key research themes, research gaps and avenues of future research on FLW in FSC. To this end, this SLR considered 152 articles relevant for the review. The authors uncovered the extant literature in the domain by presenting the research profile of the selected studies, along with thematic analysis. The authors identified eight key themes from the extant literature. The themes range from factors responsible for …
Un/doing calculation: on knowledge practices of risk management
2011
From small enterprises all the way up to financial markets, economic calculation is an activity routinely conducted in economic life-worlds. This paper argues that calculation is situated in the practice of participants involved in these life-worlds as well as in the technological tools they use. It champions a sociological analysis of the world-constituting character of calculation. As empirical examples the paper discusses risk management strategies, the embeddedness of calculation practices in banking infrastructure, and the process of internal rating procedures. Contesting the idea of the omnipresence of calculation, the paper analyzes the social phenomenon of the neutralization of calc…
Entrepreneurial ecosystems, knowledge spillovers, and their embeddedness in the sport field: a bibliometric and content analysis
2020
The aim of this article is to review the emerging research on entrepreneurial ecosystems and knowledge spillovers in general, and in the sport field in particular through bibliometric and content a...
Do we really know the predictors of competence-creating R&D subsidiaries? Uncovering the mediation of dual network embeddedness
2017
Abstract Many changes have been recorded in the R&D role played by the foreign subsidiaries of multinational corporations (MNCs), to the extent that today many are recognised as key players in the development of firm innovation-related competences. Given this trend, we examine the predictors of a subsidiary's R&D role as a competence-creating contributor to the MNC's long-term success. Traditionally, the predictors of subsidiaries' R&D roles have been sought in the specific features of the internal corporate and external host-country environments. However, we find that favourable corporate- and country-level conditions may not necessarily lead to the enhancement of a subsidiary's R&D role u…
Collaboration experience in the supply chain of knowledge and patent development
2017
In this paper, we aim at understanding the role of collaboration experience in supply chains of knowledge (SCoK). The SCoK of a company is its supply chain not related to the flow of physical goods but to the flow of R&D commodities. R&D commodities are for example patents, technologies, research services, studies, and projects, and, in high-tech industries, their development and commercialisation are considered as important as real products. To accomplish our aim in this paper, we fulfil the following research objectives: (1) investigate the relationship between the collaboration experience in SCoK and the propensity of the firm to develop new patents; (2) examine how the structural embedd…
Building relational worth in an online social community through virtual structural embeddedness and relational embeddedness
2021
Abstract This research explores the creation of relational worth in an online social community through the lens of social capital theory. Virtual structural embeddedness and relational embeddedness as dimensions of social capital are assessed through the concepts of media dependency and parasocial interaction. Both constructs are regarded as antecedents of relational worth in online social communities, which develops through their users’ self-connection to the community. To test the proposed conceptual model an analysis was undertaken of data from 370 personal interviews with online social community users. The results showed that structural and relational embeddedness are both associated wi…