This paper presents a three-level supply chain model which includes single supplier, several distribution centers and sets of retailers. For this purpose, by adopting the queuing approach, a mixed nonlinear integer programming model is formulated. The proposed model follows minimizing the total cost of the system by determining: 1) the number and location of distribution centers between candida...

In this issue of the Journal, Etzioni et al. (1) suggest a novel approach to estimating overdiagnosis in breast cancer. However, there is a key assumption in their method regarding the nature of overdiagnosis that is unlikely to hold and leads to an underestimate of the overdiagnosis rate. To understand this assumption, we need to go back to basic definitions. Lead time is the time from detecti...

In this paper we describe a framework towards computing well-localized, robust motion plans through the perception-aware motion planning problem, whereby we seek a low-cost motion plan subject to a separate constraint on perception localization quality. To solve this problem we introduce the Multiobjective PerceptionAware Planning (MPAP) algorithm which explores the state space via a multiobjec...

Dalam pelaksanaan proyek konstruksi yang dipercepat salah satunya dapat dilakukan strategi dengan penerapan metode crashing. Penelitian ini bertujuan untuk menganalisa biaya dan waktu pembuatan gedung jumbo bag area cargo lama pabrik Tuban PT Semen Indonesia (Persero) Tbk Data digunakan adalah bersumber dari pengamatan didukung oleh PT. Mahkota Artha Sejati selaku kontraktor. hal ini, crashing ...

In this paper, we develop a procedure for selecting a supplier. Suppliers are characterized by their lead time, price and quality (random yield). Each purchased item is acceptable with a given probability and independent of the others. We assume the demands are deterministic with no set-up cost and backordering is allowed. For each supplier, an optimal ordering policy is developed. We prove the...

systems of computers and their application in the lives of modern human beings are vastly expanding. in any kind of computer application, failure in computer systems can lead to a range of financial and mortal losses. indeed, the major origin of software failure can be located in designing or implementing software. with regard to these statistics, 30% of the software projects have been prospero...

Android framework-specific app crashes are hard to debug. Indeed, the callback-based event-driven mechanism of challenges crash localization techniques that developed for traditional Java programs. The key challenge stems from fact buggy code location may not even be listed within stack trace. For example, our empirical study on 500 an open benchmark has revealed 37 percent types related bugs o...

The belief that the project manager, a person in charge of the project management (PM), plays a very important role to handle conflicting goals with the usage of all resources through the organization is without doubt. The main purpose of the project management is to minimize total project and crashing cost with the reference to both direct and indirect cost and other related constraints simult...