نتایج جستجو برای: plus co radiant set

تعداد نتایج: 1084340  

2015
Jianguang Xie Zhaoxu Yang Leilei Liang Nicola Pugno

This study is focused on investigating the effectiveness of low heat accumulation asphalt mixture and its impact on the urban heat environment. Infrared radiation experiments showed that the temperature of the asphalt mixture decreased with the increase in far-infrared radiant material. The results also revealed that, compared to asphalt with 0% far-infrared radiant content, the asphalt materia...

Journal: :Electronic Colloquium on Computational Complexity (ECCC) 2008
Zenon Sadowski

We investigate the connection between optimal propositional proof systems and complete languages for promise classes. We prove that an optimal propositional proof system exists if and only if there exists a propositional proof system in which every promise class with the test set in co-NP is representable. Additionally, we prove that there exists a complete language for UP if and only if there ...

Journal: :CoRR 2009
Natalia Vanetik

The path packing problem is stated finding the maximum number of edge-disjoint paths between predefined pairs of nodes in an undirected multigraph. Such a multigraph together with predefined node pairs is often called a network. While in general the path packing problem is NP-hard, there exists a class of networks for which the hope of better solution for the path packing problem exists. In thi...

2008
Christian Glaßer Christian Reitwießner Victor L. Selivanov

We study the shrinking and separation properties (two notions well-known in descriptive set theory) for NP and coNP and show that under reasonable complexity-theoretic assumptions, both properties do not hold for NP and the shrinking property does not hold for coNP. In particular we obtain the following results. 1. NP and coNP do not have the shrinking property, unless PH is finite. In general,...

2003
Aboul Ella Hassanien Jafar M. H. Ali

Breast cancer represents the second leading cause of cancer deaths in women today and it is the most common type of cancer in women. This paper presents an efficient classification algorithm in digital mammograms in the context of rough set theory. Feature extractions acquired in this work are derived from the gray-level co-occurrence matrix. The features are extracted, normalized and then the ...

Journal: :Math. Program. 1986
William J. Cook

Edmonds and Giles introduced the class of box totally dual integral polyhedra as a generalization of submodular flow polyhedra. In this paper a geometric characterization of these polyhedra is given. This geometric result is used to show that each TDI defining system for a box TDI polyhedron is in fact a box TDI system, that the class of box TDI polyhedra is in co-NP and is closed under taking ...

2011
Hong-li Wang Rong-yi Cui

The classification performance of the learner is weakened when unlabeled examples are mislabeled during co-training process. A semisupervised co-training algorithm based on assisted learning (AR-Tri-training) was proposed. Firstly, the assisted learning strategy was presented, which is combined with rich information strategy for designing the assisted learner. Secondly, the evaluation factor wa...

2014
Yann Disser Max Klimm Nicole Megow Sebastian Stiller

We study the problem of packing a knapsack without knowing its capacity. Whenever we attempt to pack an item that does not fit, the item is discarded; if the item fits, we have to include it in the packing. We show that there is always a policy that packs a value within factor 2 of the optimum packing, irrespective of the actual capacity. If all items have unit density, we achieve a factor equa...

2007
Su Nam Kim Timothy Baldwin

In this paper, we outline our approach to interpreting semantic relations in nominal pairs in SemEval-2007 task #4: Classification of Semantic Relations between Nominals. We build on two baseline approaches to interpreting noun compounds: sense collocation, and constituent similarity. These are consolidated into an overall system in combination with co-training, to expand the training data. Our...

2008
Chinmei CHOU Mohamed Saat Joo-Young LEE

This study examined the influences of aluminized (Type A) and non-aluminized firefighters’ protective clothing (Type B, C, D and CON) on physiological and subjective responses in radiant heat. Total clothing weight was 6.24, 6.38, 6.06, 5.76 and 3.82 kg for Type A, B, C, D and CON, respectively. Eight firefighters performed exercise at an air temperature of 30°C with 50%RH. Three bouts of 10 mi...

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