نتایج جستجو برای: weighted tardinessearliness
تعداد نتایج: 100802 فیلتر نتایج به سال:
in this paper, we consider scheduling of project networks under minimization of total weighted resource tardiness penalty costs. in this problem, we assume constrained resources are renewable and limited to very costly machines and tools which are also used in other projects and are not accessible in all periods of time of a project. in other words, there is a dictated ready date as well as a d...
زمینه و هدف : برای تقسیم بندی بیماری لوپوس سیستمیک کرایتریای متفاوتی به کار رفته است. از جمله کرایتریای acr سال 1997 و کرایتریای boston weighted(bw) می باشد که در نوع bw جهت هر معیار score (نمره) داده می شود. هدف از این مطالعه مقایسه این دو روش و تعیین حساسیت و اختصاصیت روش bw در تشخیص بیماری لوپوس می باشد. روش کار : در این مطالعه که از نوع cross sectional بود و از اول مهر ماه 1383 تا آخر اسف...
introduction contrast-enhanced fluid-attenuated inversion recovery (flair) is one of the mri sequences that can be used for detection and evaluation of pathological changes in the brain. in this work, we have studied the effect of different echo times (te) on the maximum relationship between signal intensity and concentration of the contrast agent using the flair sequence. materials and methods...
let g be a locally compact group, and let ω be a weight on g. we show that the weightedmeasure algebra m(g,ω) is amenable if and only if g is a discrete, amenable group andsup{ω(g) ω(g−1) : g ∈ g} < ∞, where ω(g) ≥ 1 (g ∈ g) .
Objective(s): The study objective was to assess the diagnostic performance of positron emission tomography (PET) for gliomas using the novel tracer 18F-fluciclovine (anti-[18F]FACBC) and to evaluate the safety of this tracer in patients with clinically suspected gliomas.Methods: Anti-[18F]FACBC was administered to 40 patients with clinically suspected high- or low-grade gliomas, followed by PET...
background: intervertebral disc herniation has two common types, extrusion and protrusion, which may affect the adjacent vertebrae.in addition, it is associated with significant signal changes in t1 mri (short tr/te) and t2 mri (long tr/te). methods: the present study is a cross-sectional analytic one, in which sampling was performed retrospectively. cases were randomly selected from the pati...
Consensus based approaches provide a way to drive group decisions which are more accepted and appreciated by decision makers. Different consensus approaches and methodologies have been proposed to conduct these processes successfully, but there still remain some aspects that must be further studied, such as the use and effects of different aggregation operators to measure consensus in the group...
In this study, a novel coupling model for landslide susceptibility mapping is presented. In practice, environmental factors may have different impacts at a local scale in study areas. To provide better predictions, a geographically weighted regression (GWR) technique is firstly used in our method to segment study areas into a series of prediction regions with appropriate sizes. Meanwhile, a sup...
In this report, we discuss the geometric properties of spatial additively weighted Voronoi (AWV-) cells. First, we give a short survey of previously known properties of the geometry of these cells. Then, we give a detailed account on the geometry of the edges of AWV-cells. Finally, and this is our main contribution, we prove a new and tight lower bound of Θ(n2) on the worst-case combinatorial c...
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