We formulate a supply-chain problem by:(1)casting it in the model of critical-path analysis as defined by predecessor/successor relations, and (2)allowing for mutual dependency among activity nodes applying Leontief’s input-output structure.

Generating effective employment opportunities is one of the principal challenges faced by development planners in Iran. If investment projects are undertaken on the basis of sectoral priorities in production and employment, the economic and social problems emanating from unemployment will be reduced, helping the Country’s process of development. In this paper, an attempt is made to identify key...

ActiveCube is a bi-directional user interface that supports a person's creative work through constructing and interacting with 3-D virtual objects by using actual physical cubes. With this flexible interface, the user can easily construct various 3-D structures in a virtual environment by simply combining the cubes. All of the faces of the cubes are the same and can be connected to any face of ...

in the recent sports science literature, it is possible to notice that research branches related to performance analysis are widely developing [1]. The aim of this study was to analyze technical and tactical differences among male table tennis athletes of three categories: top-class world players (T), elite European juniors (J) and elite European cadets (C). 20 matches were randomly selected (T...

This document describes a convention for compressing FITS binary tables that is modeled after the FITS tiled-image compression method (White et al. 2009) that has been in use for about a decade. The input table is first optionally subdivided into tiles, each containing an equal number of rows, then every column of data within each tile is compressed and stored as a variable-length array of byte...

Query reverse engineering seeks to re-generate the SQL query that produced a given query output table from a given database. In this paper, we solve this problem for OLAP queries with group-by and aggregation. We develop a novel three-phase algorithm named REGAL 1 for this problem. First, based on a lattice graph structure, we identify a set of group-by candidates for the desired query. Second,...