This paper investigated the relationship between Internet-enabled supply chain integration strategies and performance in manufacturing and services. It summarizes the literature on demand and supply integration and describes four web-based strategies. A stratified random sample was collected from UK manufacturers and services, and there was strong evidence that demand chain management (DCM) led...

The sampling method has been paid much attention in the field of complex network in general and statistical physics in particular. This paper presents two new sampling methods based on the perspective that a small part of vertices with high node degree can possess the most structure information of a network. The two proposed sampling methods are efficient in sampling the nodes with high degree....

T paper describes, analyzes and evaluates an algorithm for estimating portfolio loss probabilities using Monte Carlo simulation. Obtaining accurate estimates of such loss probabilities is essential to calculating value-at-risk, which is a quantile of the loss distribution. The method employs a quadratic (’’delta-gamma’’) approximation to the change in portfolio value to guide the selection of e...

due to the increasing number of users’ telegram social network in iran especially among the young and educated people, it seems that the study of use of such networks is important particularly in educational activities. given the importance of the issue, the purpose of this descriptive- correlative research was to study the factors affecting students’ intention to use of telegram social network...

OBJECTIVE To determine risky behaviors leading to unintentional injuries among Tehrani high school students in 2009. METHODS This cross-sectional study was carried out berween October and December 2009. Out of 237,300 (185151 governmental, 52149 non governmental) Tehrani high school students in both genders, 727 subjects were selected by multistage randomized sampling. Among 20 education dist...

Generating sample models for testing a model transformation is no easy task. This paper explores the use of classifying terms and stratified sampling for developing richer test cases for model transformations. Classifying terms are used to define the equivalence classes that characterize the relevant subgroups for the test cases. From each equivalence class of object models, several representat...

Background: About 190 million people consume drugs and alcohol worldwide with the majority of this number being the youth. In Zambia the consumption of alcohol and other drug abuse is on the increase with the majority of youths starting to consume alcohol at an early age. Objectives: Aim of this paper is to explore the usage of alcohol and tobacco among University of Zambia students and factors...

This investigation of gendered experiences in computer science and computer engineering (CSE) doctoral programs uses survey data from a nationwide stratified random sample. Analyses of data from 41 departments show that women CSE doctoral students have less confidence than men students that they can achieve their educational goals. Moreover, women’s confidence is significantly affected by their...

In recent years, portable Raman spectrometers and commercialized surface-enhanced scattering (SERS) substrates have become increasingly popular. They turned out to be great tools for both substance detection, identification, analysis on-site. This work addresses the technique collect proper spectra using SERS spectrometers. We propose a random sampling that gives representative high-quality wit...