Our problem is about a routing of a vehicle with pickup and delivery of product with time window constraints. This problem requires to be attended with instances of medium scale (nodes ≥ 100). A strong active time wi...
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ISBN:
(纸本)0769523129
Our problem is about a routing of a vehicle with pickup and delivery of product with time window constraints. This problem requires to be attended with instances of medium scale (nodes ≥ 100). A strong active time window exists (≥ 90%) with a large factor of amplitude (≥ 75%). This problem is NP-hard and for such motive the application of an exact method is limited by the computational time. This paper proposes a specialized genetic algorithm. We report good solutions in computational times below 5 minutes. The previous finding allows its application in business environment where the decision time is critical.
Our problem is about a routing of a vehicle with product pickup and delivery and with time window constraints. This problem requires to be attended with instances of medium scale (nodes ≥ 100). A strong active time w...
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This article reviews the way in which the spread of computing technology has impacted the search and seizure policies of relevant U.S. government agencies. Among the changes that have occurred is a total redesign by t...
This article reviews the way in which the spread of computing technology has impacted the search and seizure policies of relevant U.S. government agencies. Among the changes that have occurred is a total redesign by the Justice Department of its search and seizure guidelines and policies. the article discusses numerous questions that involve search and seizure procedures as they pertain to the use of computing technology.
Once Wireless Local Networks (WLAN) and Bluetooth devices share the same frequency band (ISM) there is a potential risk of interference if they are supposed to operate close to each other. Additionally, the signal fad...
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Agrobacterium tumefaciens possesses two catalases, a bifunctional catalase-peroxidase, KatA and a homologue of a growth phase regulated monofunctional catalase, CatE. In stationary phase cultures and in cultures enter...
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Agrobacterium tumefaciens possesses two catalases, a bifunctional catalase-peroxidase, KatA and a homologue of a growth phase regulated monofunctional catalase, CatE. In stationary phase cultures and in cultures entering stationary phase, total catalase activity increased 2-fold while peroxidase activity declined. katA and catE were found to be independently regulated in a growth phase dependent manner. KatA levels were highest during exponential phase and declined as cells entered stationary phase, while CatE was detectable at early exponential phase and increased during stationary phase. Only small increases in H 2 O 2 resistance levels were detected as cells entering stationary phase. The katA mutant was more sensitive to H 2 O 2 than the parental strain during both exponential and stationary phase. Inactivation of catE alone did not significantly change the level of H 2 O 2 resistance. However, the katA catE double mutant was more sensitive to H 2 O 2 during both exponential and stationary phase than either of the single catalase mutants. The data indicated that KatA plays the primary role and CatE acts synergistically in protecting A. tumefaciens from H 2 O 2 toxicity during all phases of growth. Catalase-peroxidase activity (KatA) was required for full H 2 O 2 resistance. The expression patterns of the two catalases in A. tumefaciens reflect their physiological roles in the protection against H 2 O 2 toxicity, which are different from other bacteria.
This paper- studies different error control schemes in wireless sensor networks with Bluetooth technology. The tradeoff between reliability and energy consumption of Bluetooth packets are analyzed, using different err...
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The Collaborative Large-scale Engineering Analysis Network for Environmental Research (CLEANER) Project Office has been established with funding from the National science Foundation (NSF) to the University of Illinois...
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MicroRNAs (miRNAs) are small endogenous RNAs of ∼22nt that act as direct post-transcriptional regulators in animals and plants. MicroRNAs generally perform a function by binding to the complementary site on the 3'...
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This work describes a workflow-based environment that manages the execution of software-testing processes. Testing processes require that human and computer resources be handled as dedicated resources, previously sche...
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ISBN:
(纸本)972886521X
This work describes a workflow-based environment that manages the execution of software-testing processes. Testing processes require that human and computer resources be handled as dedicated resources, previously scheduled for testing activities, with no overlapping. Two striking features of this environment are: a) the efficient handling of resources by taking into account the capabilities offered by resources required by testing activities, and b) it provides a broader view of all execution steps in a software-testing plan. Hence, it enables a better planning of software-testing process executions, as well as of human and computer resources involved.
L-system is a grammar-like formalism introduced to simulate the development of organisms. The L-system grammar can be viewed as a sort of genetic information that will be used to generate a specific structure. However...
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