Search results for "Transform"
showing 10 items of 3975 documents
Oral pigmented lesions:a retrospective analysis from Brazil
2020
Background Pigmented lesions are uncommon in the oral mucosa, and studies investigating the incidence and types of these lesions are desired to improve the diagnostic knowledge of clinicians. The aim of this study was to analyze the distribution of oral pigmented lesions in a Brazilian population. Material and Methods A retrospective descriptive cross-sectional study was performed. Oral pigmented lesions were retrieved from the files of two oral and maxillofacial pathology services from Brazil over a 45-year period (1974-2019). The clinical data and the diagnoses of each case were retrieved and included in a Microsoft Excel® database. Results From 77.074 lesions diagnosed in this period, 76…
Behind the scenes of artificial intelligence: a study of micro-work platforms in France
2019
Este artículo es una versión resumida del informe “Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?» This article is a summarized version of the report "Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?" .; International audience; Micro-work internet services allocate small, standardized tasks of data generation and annotation to crowds of providers. The outputs are mainly used to produce artificial intelligence solutions. It is an exemplary instance of the “platformization” of the economy, and of the transformations of labour that digital technologies bring about. To uncover the conditions under which micro-wo…
Līdera vadīšanas stila saistība ar darbinieku stresu
2016
Pētījuma jautājums ir, kāda saistība pastāv starp vadītāja līderības stilu un darbinieku uztverto stresu. Pētījumā piedalījās 51 respondenti no dažādām darba jomām un vietām, vīrieši un sievietes vecumā no 22 līdz 46. Pētījumā tika izmantotas divas anketas, pirmā ir „Uztvertā Stresa Skala” (Cohen, Kamarck, & Mermelsken, 1983), kuru adaptēja latviešu valodā (Stokenberga, 2008). Šī anketa tika izmantota, lai varētu noteikt respondentu uztverto stresu darbā. Otrā anketa ir „Līderības stila novērtējuma aptauja” (Rižakova, 2011), ar kuras palīdzību varēja noteikt, kādā mērā, pēc respondentu domām, divi pētītie līderības stili atbilst viņu priekšniekam. Apkopojot un, korelējot rezultātus stresa l…
A reduçao neoliberal do sujeito ao individuo: pela recuperaçao de um imaginário com capacidade de transformaçao social
2001
Acompanhando as formulações de Cornelius Castoriadis e de Anthony Elliot, este texto afirma um imaginário que, longe se ser reprodutivo e derivado de das ilusões e da alienação do sujeito, e força produtiva de imagens e formas e, como tal, produtor da realidade social. Da perspectiva crítica aberta por esa formulação e analisado o individualismo metodológico dominante nas ciências sociais que não so justifica o projeto econômico neoliberal como não deixa espaço para quaisquer considerações sobre emergências colectivas como potencia de transformação social Following Cornelius Castoriadis and Anthony Elliot's ideas, this text assures an imaginary conception that, far from being reproductive a…
Copper-hydride nanoclusters with enhanced stability by N-heterocyclic carbenes
2021
AbstractCopper-hydrides have been intensively studied for a long time due to their utilization in a variety of technologically important chemical transformations. Nevertheless, poor stability of the species severely hinders its isolation, storage and operation, which is worse for nano-sized ones. We report here an unprecedented strategy to access to ultrastable copper-hydride nanoclusters (NCs), namely, using bidentate N-heterocyclic carbenes as stabilizing ligands in addition to thiolates. In this work, a simple synthetic protocol was developed to synthesize the first large copper-hydride nanoclusters (NCs) stabilized by N-heterocyclic carbenes (NHCs). The NC, with the formula of Cu31(RS)2…
Re-discovering international executive institutions
2004
Public Administration is in an era of change. This article aims at re-discovering one underresearched part of public administration, the executive arms of International Governmental Organizations (IGOs). These are referred to as International Executives (IEs). The article provides a conceptual mapping and an empirical illustration of three important dynamics of IEs – intergovernmental, supranational and transgovernmental dynamics. The study also offers a middle-range organization theory perspective that suggests five independent variables that foster the advent of supranational and transgovernmental behavior and roles among IE civil servants. The variables suggested are (H1) the organizatio…
ChemInform Abstract: Cyclic SiS2: A New Perspective on the Walsh Rules.
2012
Cyclic SiS2 is detected in the low-current dc discharge products of a mixture of SiH4 and H2S by Fourier transform microwave spectroscopy.
The Radon-Wigner Transform and Its Application to First-order Optical Systems
2009
The Radon-Wigner transform is presented as a tool for the description of 1st-order optical systems. The input/output relationships for this phase-space representation are obtained and their application in analysis and design tasks is pointed out.
Complex objects classified by morphological shape analysis and elliptical Fourier descriptors
2005
This chapter deals with the classification of complex objects by morphological shape analysis and elliptical Fourier descriptors. An unsupervised method has been proposed to identify components with specific shapes by a simple edge detector and to classify them via the description of their contours. A particular application has been arranged in order to evaluate the goodness of this approach when discriminating between normal and pathological human megakaryocytes. Alterations in these cells can occur in many pathological processes and in such cases the pattern, size and shape of the cytoplasm and/or of the nucleus are extremely varied.
A Method of Conversion of some Coefficient Inverse Parabolic Problems to a Unified Type of Integral-Differential Equation
2011
Coefficient inverse problems are reformulated to a unified integral differential equation. The presented method of conversion of the considered inverse problems to a unified Volterra integral-differential equation gives an opportunity to distribute the acquired results also to analogous inverse problems for non-linear parabolic equations of different types.