In this paper, the non preemptive multi-mode resourceconstrained project scheduling is considered. We use a biobjective approach to solve the mono-objective problem of makespan minimization. Our main focus is to propose a high-performance algorithm that solves the problem at hand. A new evolutionary algorithm is developed. The encoding procedure is based on feasible activity list and a mode ass...

This paper discusses the problem of allocation of constrained renewable resource to splittable activities of a single project. If the activities of stochastic projects can be split, these projects may be completed in shorter time when the available resource is constrained. It is assumed that the resource amount required to accom-plish each activity is a discrete quantity and deterministic. The ...

Recently, Attribute-Based Encryption (ABE) is used as a baseline technology for keyword searching mechanisms to cater users’ security and privacy-related concerns who outsource their data the powerful resource-rich cloud server. Almost all existing Keyword Searching (ABKS) schemes either operate on single-keyword or multiple; conjunctive-keyword search setting. These work premise of an “all-or-...

This paper presents design and implementation of a multi-threading Operating System (OS), SensorOS, for resource constrained Wireless Sensor Network (WSN) nodes. Compared to event-handler kernels, such as TinyOS, SensorOS enables coexistence of multiple time critical application tasks. SensorOS supports preemptive priority-based scheduling, very fine-granularity timing, and message passing inte...

Researching the evolution and maintenance of reproductive mode (oviparity, ovoviviparity and viviparity) is important for identifying the intrinsic and environmental pressures associated with maternal care. We studied the life history, reproductive mode and sex allocation of Bactrothrips brevitubus, a haplodiploid, facultatively ovoviviparous Japanese thrips. Individual females can produce a ma...

In this paper, we introduce a new multimode project scheduling problem, taking into account finish-to-start precedence relations among project activities as well as renewable and nonrenewable resources constraints. We suppose renewable resources are hired and not accessible in all time intervals of a project. In other words, there is a presumed release date as well as a mandated due date for ea...

This paper studies and analyses the multi-skilled resource-constrained project scheduling problem (MSRCPSP). We present a new classification scheme based on an existing for problems. allows researchers to classify all problems its extensions. Furthermore, we propose data generation procedure MSRCPSP introduce multiple artificial datasets varying research purposes. The are generated resource par...

The characteristic of heterogeneous grid environment results in that the task scheduling is constrained by a number of factors such as the length of scheduling, the performance of security, and the cost of scheduling, etc. Firstly, under the consideration of the task scheduling demand for secure performance. A security benefit function and the corresponding time cost model are constructed. Mean...