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Five studies examined the hypotheses that when people experience positive affect, those low in self-esteem are especially likely to dampen that affect, whereas those high in self-esteem are especially likely to savor it. Undergraduate participants' memories for a positive event (Study 1) and their reported reactions to a success (Study 2) supported the dampening prediction. Results also suggest that dampening was associated with worse mood the day after a success (Study 2), that positive and negative affect regulation are distinct, that self-esteem is associated with affect regulation even when Neuroticism and Extraversion are controlled (Studies 3 and 4), and that self-esteem may be especially important for certain types of positive events and positive affect regulation (Study 5). (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
3.
Platinum promoted zirconia-sulfate catalysts: one-pot preparation,physical properties and catalytic activity 总被引:2,自引:0,他引:2
A new innovative methodology for the single-stage preparation of ZrO2-SO4 and Pt/ZrO2-SO4 catalysts is reported, based on the sol-gel technique. Catalysts are characterized by analysis, XRPD, BET and IR methods and are tested in the isomerization of butane. 相似文献
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5.
Muscetti Michela Rinaldi Antonio M. Russo Cristiano Tommasino Cristian 《Knowledge and Information Systems》2022,64(5):1283-1303
Knowledge and Information Systems - The rapid increase of available data in different complex contexts needs automatic tasks to manage and process contents. Semantic Web technologies represent the... 相似文献
6.
Imon Banerjee Asan Agibetov Chiara Eva Catalano Giuseppe Patané Michela Spagnuolo 《The Visual computer》2016,32(10):1337-1349
In the digital era, patient-specific 3D models (3D-PSMs) are becoming increasingly relevant in computer-assisted diagnosis, surgery training on digital models, or implant design. While advanced imaging and reconstruction techniques can create accurate and detailed 3D models of patients’ anatomy, software tools that are able to fully exploit the potential of 3D-PSMs are still far from being satisfactory. In particular, there is still a lack of integrated approaches for extracting, coding, sharing and retrieving medically relevant information from 3D-PSMs and use it concretely as a support to diagnosis and treatment. In this article, we propose the SemAnatomy3D framework, which demonstrates how the ontology-driven annotation of 3D-PSMs and of their anatomically relevant features (parts of relevance) can assist clinicians to document more effectively pathologies and their evolution. We exemplify the idea in the context of the diagnosis of rheumatoid arthritis of the hand district, and show how feature extraction tools and semantic 3D annotation can provide a rich characterization of anatomical landmarks (e.g., articular facets, prominent features, ligament attachments) and pathological markers (erosions, bone loss). The core contributions are an ontology-driven part-based annotation method for the 3D-PSMs and a novel automatic localization of erosion and quantification of the OMERACT RAMRIS erosion score. Finally, our results have been compared against a medical ground truth. 相似文献
7.
Progressive Transmission of Vector Map Data over the World Wide Web 总被引:17,自引:0,他引:17
Within distributed computing environments, access to very large geospatial datasets often suffers from slow or unreliable network connections. To allow users to start working with a partially delivered dataset, progressive transmission methods are a viable solution. While incremental and progressive methods have been applied successfully to the transmission of raster images over the World Wide Web, and, in the form of prototypes, of triangular meshes, the transmission of vector map datasets has lacked a similar attention. This paper introduces a solution to the progressive transmission of vector map data that allows users to apply analytical GIS methods to partially transmitted data sets. The architecture follows a client-server model with multiple map representations at the server side, and a thin client that compiles transmitted increments into a topologically consistent format. This paper describes the concepts, develops an architecture, and discusses implementation concerns. 相似文献
8.
Michela Rossi 《Nexus Network Journal》2006,8(1):1-2
Letter from the Editor
Letter from the editor 相似文献9.
Michela Mortara Giuseppe Patané Michela Spagnuolo Bianca Falcidieno Jarek Rossignac 《Algorithmica》2003,38(1):227-248
Tools for the automatic decomposition of a surface into shape
features will facilitate the editing, matching, texturing,
morphing, compression and simplification of three-dimensional shapes. Different
features, such as flats, limbs, tips, pits and various blending
shapes that transition between them, may be characterized in terms
of local curvature and other differential properties of the
surface or in terms of a global skeletal organization of the
volume it encloses. Unfortunately, both solutions are extremely
sensitive to small perturbations in surface smoothness and to
quantization effects when they operate on triangulated surfaces.
Thus, we propose a multi-resolution approach, which not only
estimates the curvature of a vertex over neighborhoods of variable
size, but also takes into account the topology of the surface in
that neighborhood. Our approach is based on blowing a spherical
bubble at each vertex and studying how the intersection of that
bubble with the surface evolves. We describe an efficient approach
for computing these characteristics for a sampled set of bubble
radii and for using them to identify features, based on easily
formulated filters, that may capture the needs of a particular
application. 相似文献
10.
Its more refined congestion control mechanisms, also based on the estimation of round trip delays, allow TCP Vegas to outperform the more widespread TCP Reno congestion control, based only on the packet loss detection, in a number of network environments. However, these mechanisms make TCP Vegas less aggressive with respect to TCP Reno; thereby TCP Vegas sources show high weakness in taking the available bandwidth when competing with other TCP Reno sources. This is a major reason that hinders the spread of TCP Vegas among Internet users. In this work, after a preliminary analytic study about the limits of TCP Vegas in mixed network environments, we describe a new adaptive mechanism for TCP Vegas, called TCP NewVegas, designed in order to improve its performance even in heterogeneous network scenarios. The large number of simulations, presented in this paper, show that TCP NewVegas guarantees good performance even in mixed network environments, without canceling the desirable features (e.g. fairness) that TCP Vegas exhibits in homogeneous environments. 相似文献