We study the one-machine problem with release dates and we look at several objective functions including total (weighted) tardiness and total (weighted) completion time. We describe dominance rules for these criteria, as well as techniques for using these dominance rules to build heuristic solutions. We use them to improve certain well-known greedy heuristic algorithms from the literature. Fina...

We consider the problem of preemptively scheduling n jobs on a system of m uniform processors. Each job has a release time, a due time, and a memory requirement associated with it. Each processor has a speed and a memory capacity associated with it. Linear programming formulations are obtained for the following optimization criteria: (1) minimize the schedule length and (2) minimize the maximum...

We study the one-machine scheduling problem with release dates and we look at several objective functions including total (weighted) tardiness and total (weighted) completion time. We describe dominance rules for these criteria, as well as techniques for using these dominance rules to build heuristic solutions. We use them to improve certain well-known greedy heuristic algorithms from the liter...

We investigate the computational complexity of scheduling multiprocessor tasks with pres-pecified processor allocations. We consider two criteria: minimizing schedule length and minimizing the sum of the task completion times. In addition, we investigate the complexity of problems when precedence constraints or release dates are involved.

Despite recommendations to release microbial resources to the community post-publication, the reality is far from satisfying. A workshop discussed the need for a coordinated and effective deposition policy for 'key' microbial strains and proposes a set of criteria to facilitate their deposition into public service collections. The majority of authors either contacted directly or during submissi...

We identified 15 different syndromic surveillance systems currently in use. From these, we found 8 different case definitions for acute respiratory illness due to intentional release of biological weapons. All 15 surveillance approaches we identified used different criteria for enumerating and tallying illness syndromes attributable to biological illness, (Table 1) with little or no evidence of...

Aim: The purpose of this study is to compare the surgical outcomes treating recurrent carpal tunnel with release only compared fat grafting as an adjunct. Methods: Retrospective case-control was performed tunnels treated, excluding explicit nerve injury such transections, neuromas in continuity, etc. Patients received re-release or both groups were utilizing chi-square analysis. Results: A tota...

combination formulations of liposomes with collagen have been previously introduced as a means of obtaining more stable and less permeable liposomes. in this study, the effect of aqueous solutions of the collagen products collapur? (col) and collapuron-dak? (cold) from henkle co., on the release rate of sodium chromate (chr) as a water-soluble model drug from stable plurilamellar vesicles (splv...

sodium salicylate containing microemulsions have been formulated, based on the previous phase diagram studies, using a pharmaceutically acceptable surfactant and oil. the effects of formulation variables on the release profile of the drug from microemulsion through intact rat skin were also determined experimentally. in this investigation, two commercially available lecithins (namely epikuron 2...

curcumin (cur) is a hydrophobic molecule and beneficial antioxidant with known anticancer property. the bioavailability of curcumin is low because of its hydrophobic structure. mesoporous silica nanoparticles (msn) loaded by cur were used as nanocarriers for sustained release of cur in four different media such as simulated gastric,intestinal, colon and body fluids (sgf, sif, scf, and sbf, resp...