in this study, given the sequence dependent setup times, we attempt using the technique of response surface methodology (rsm) to set the parameters of the genetic algorithm (ga), which is used to optimize the scheduling problem of n job on 1 machine (n/1). it aims at finding the most suitable parameters for increasing the efficiency of the proposed algorithm. at first, a central composite desig...

Here we present an experimental setup for water stable isotope (δO and δD) continuous-flow measurements and provide metrics defining the performance of the setup during a major ice core measurement campaign (Roosevelt Island Climate Evolution; RICE). We also use the metrics to compare alternate systems. Our setup is the first continuousflow laser spectroscopy system that is using off-axis integ...

In a personal communication system (PCS), a scheme for reforwarding call-terminating setup messages (SETUP messages) from a network or a cell station is used to guard against their loss. We have developed a method for evaluating the loss probability of a reforwarding scheme in which the network monitors the response messages from a personal station after forwarding a SETUP message to that perso...

There are two major difficulties in real-time multicast connection setup. One is the design of an efficient distributed routing algorithm which optimizes the network cost of routing trees under the real-time constraints. The other is the integration of routing with admission control into one single phase of operations. This paper presents a real-time multicast connection setup mechanism, which ...

The purpose of this study was to test the superiority of a soft tissue-based setup using cone-beam computed tomography (CBCT) to a bony structure-based setup using the ExacTrac system in intensity-modulated radiotherapy (IMRT) for prostate cancer. We studied 20 patients with localized prostate cancer who received IMRT between November 2010 and February 2012. After the initial setup, the pelvic ...

Background: Epidemiological studies show that computed tomography (CT) is one of the main sources of ionizing radiations. Shielding of radiosensitive organs is one of the dose reduction methods. This study aimed to assess the eye lens dose reduction and image quality resulting from the use of radio-protective bismuth shield in brain CT imaging. Methods: Bismut...

Recently we have presented a system for panoramic depth imaging with a single standard camera. One of the problems of such a system is the fact that we cannot generate a stereo pair of images in real time. This paper presents a possible solution to this problem. Based on a new sensor setup simulations were performed to establish the quality of new results in comparison to results obtained with ...

This study investigates the single-machine scheduling problem with common due-win -dow assignment, past-sequence-dependent (p-s-d) setup times and a deteriorating maintenance activity. By past-sequence-dependent setup times, we mean that the setup time of a job is proportional to the sum of the processing times of the jobs already processed. The objective is to minimize a cost function based on...

ATM provides a connection-oriented model of communication. Each conversation between two end-points occurs over a virtual circuit. All cells for the same conversation flow along the same virtual circuit. For the circuit to be established, a call setup process is initiated by the source host and run over all intermediate switches in the path, as well as the destination. In the current ATM standa...

This paper considers single machine scheduling and due date assignment with setup time. The setup time is proportional to the length of the already processed jobs; that is, the setup time is past-sequence-dependent (p-s-d). It is assumed that a job's processing time depends on its position in a sequence. The objective functions include total earliness, the weighted number of tardy jobs, and the...