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排序方式: 共有179条查询结果,搜索用时 31 毫秒
1.
Applied Intelligence - Accurate demand prediction is an essential component of any decision support system for smart vehicle dispatching. However, predicting real time demand at the... 相似文献
2.
Hendawi Abdeltawab Gupta Jayant Liu Jiayi Teredesai Ankur Ramakrishnan Naveen Shah Mohak El-Sappagh Shaker Kwak Kyung-Sup Ali Mohamed 《The Journal of supercomputing》2019,75(12):8207-8230
The Journal of Supercomputing - In the current era of the Internet of Things (IoT), massive number of sensors are used in our daily lives. Sensors are everywhere around us. They exist in our homes,... 相似文献
3.
Jayant A. SathayeRobert K. DixonCynthia Rosenzweig 《Applied Energy》1997,56(3-4):225-235
Over the past three years, country studies have improved country-specific, and hence global, estimates of: (i) greenhouse gas (GHG) emissions and sequestration, and (ii) costs and benefits of mitigation options, and (iii) the vulnerability of natural habitats and human systems. The technical and financial support provided by the US and other country-study programs has enhanced the contribution of experts from developing and transition countries to their global scientific assessment. This paper presents a brief overview of work conducted in the context of the US Country Studies Program in the development of national GHG inventories, assessment of GHG mitigation options, and assessment of vulnerability to climate change and options for adaptation. 相似文献
4.
Substitution and price elasticity estimates using inter-country pooled data in a translog cost model
Pooled data across several developing countries and the U. S. were used to estimate long-run substitution and price elasticities in a translog framework for the paper, iron and steel, and aggregate manufacturing industries. While the quality of the estimates varies across the several industry-specific models, the results suggest higher values for these elasticities than appear commonly used in integrated assessment models. Estimates of own-price elasticities of energy range from − 0.80 to − 1.76 and are comparable to estimates from previous econometric studies in the context of developed countries (− 0.77 to − 0.87). Substitution elasticities show wider variation across countries and industries. For energy and capital they range from − 1.96 to 9.80, for labor and energy from 2.61 to 7.11, and for energy and material from − 0.26 to 2.07. 相似文献
5.
Shipra Agrawal Jayant R. Haritsa B. Aditya Prakash 《Data mining and knowledge discovery》2009,18(1):101-139
To preserve client privacy in the data mining process, a variety of techniques based on random perturbation of individual
data records have been proposed recently. In this paper, we present FRAPP, a generalized matrix-theoretic framework of random
perturbation, which facilitates a systematic approach to the design of perturbation mechanisms for privacy-preserving mining.
Specifically, FRAPP is used to demonstrate that (a) the prior techniques differ only in their choices for the perturbation
matrix elements, and (b) a symmetric positive-definite perturbation matrix with minimal condition number can be identified,
substantially enhancing the accuracy even under strict privacy requirements. We also propose a novel perturbation mechanism
wherein the matrix elements are themselves characterized as random variables, and demonstrate that this feature provides significant
improvements in privacy at only a marginal reduction in accuracy. The quantitative utility of FRAPP, which is a general-purpose
random-perturbation-based privacy-preserving mining technique, is evaluated specifically with regard to association and classification
rule mining on a variety of real datasets. Our experimental results indicate that, for a given privacy requirement, either
substantially lower modeling errors are incurred as compared to the prior techniques, or the errors are comparable to those
of direct mining on the true database.
A partial and preliminary version of this paper appeared in the Proc. of the 21st IEEE Intl. Conf. on Data Engineering (ICDE),
Tokyo, Japan, 2005, pgs. 193–204. 相似文献
6.
Mixtures of polystyrene and high density polyethylene were injection molded from recycled and virgin polymers to generate cocontinuous structures. The mechanical properties of these blends were evaluated to assess their conformance to rule of mixtures behavior in general and to identify areas of synergy or incompatibility in specific. Flexural and tensile data for recycled blends showed that generally the properties are not additive, except in a cocontinuous region of composition near 35/65 PS/HDPE that has been identified previously for recycled materials. Analysis of crystallinity in the HDPE phase of these blends by differential scanning calorimetry indicates a marked reduction in the level of HDPE crystallinity at the 35/65 PS/HDPE composition. Similar blends of virgin PS/HDPE polymer do not show the differing regions of incompatibility and synergy illustrated by the recycled materials, but rather show approximate conformance to the rule of mixtures. Furthermore, the virgin blends show virtually no crystallinity suppression and a more pronounced Tg shift in the polystyrene compared to recycled materials. Detailed characterization of the recycled materials in terms of polymer and particulate impurities should improve understanding of these differences and perhaps provide direction for obtaining enhanced synergistic behavior in virgin polymer blends. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci, 2006 相似文献
7.
Jayant Rathod Priti Sharma Punam Pandey A. P. Singh Pradeep Kumar 《Journal of Porous Materials》2017,24(4):837-846
Highly efficient SBA-15-EDTA-Pd(11) heterogeneous catalyst was synthesized by covalent anchoring Pd-EDTA complex over organo-modified surface of SBA-15. SBA-15-EDTA-Pd(11) catalyst was found to exhibit excellent catalytic activity in appreciable yield for Heck, Stille and Kumada cross-coupling reactions. Catalytic system exhibited excellent activity for completion of reaction, isolation, Pd loading (0.87 mmol%) and yields of products as compared to earlier reported heterogeneous supported Pd catalysts. Covalently anchored heterogeneous SBA-15-EDTA-Pd(11) catalyst can be recycled for more than five times without noticeable loss in activity and selectivity. 相似文献
8.
9.
An anomalous decrease in junction depth with increasing diffusion time has been observed for the first time for diffusions from doped oxides into semiconductors. Experimental data on the diffusion of tin into gallium arsenide is provided, with a simple theoretical analysis of the phenomena. 相似文献
10.
An overview of low bit rate coding and the interaction between source coding and channel coding is presented. The interaction of coding with networking in a multiuser environment, including algorithms for robust coding which anticipate imperfect network performance, and techniques of decoding a signal that has traversed an imperfect network are described. The performances of such algorithms are illustrated with examples from speech, audio, and video transmission in the presence of packet losses. The challenges in measuring the quality of service (QOS) in the context of new algorithms for coding and networking and the difficulty of measuring QOS in the networking of multimedia information are discussed 相似文献