one of the most important dimention of the industrial structure is the concentration. in order to determine concentration in iranian industries from 2000 to 2005, the 5-firm concentration ratio is used in terms of sale value, production, value added and employment variables. the results indicate high correlation among concentration ratios in terms of sale, employment, value added and production...

In recent years, researchers have tackled the topic of augmenting “structure from motion” with stereo information. Unfortunately nearly all stereo-motion algorithms assume that the scene is rigid. In [16] the factorization-based structurefrom-motion method for rigid objects was proposed, and soon it was extended to non-rigid or deformable objects in [17]. In this paper we propose a framework of...

Measurements of diurnal diameter variations of the xylem and phloem are a promising tool for studying plant hydraulics and xylem-phloem interactions in field conditions. However, both the theoretical framework and the experimental verification needed to interpret phloem diameter data are incomplete. In this study, we analytically evaluate the effects of changing the radial conductance between t...

Seaweed has the ability to use carbon from the environment through photosynthesis to produce biomass. The aim of this study is to estimate carbon sequestration by seaweed aquaculture as a strategy for climate change mitigation. The study was undertaken at Gerupuk Bay, Lombok Island, West Nusa Tenggara Province, Indonesia. Four seaweed variants, such as Kappaphycus alvarezii var. Tambalang and M...

Airlifting technology utilized in deep-sea mining (DSM) industry was proposed in the 70s of last century, which was triggered by the discovery of vast amounts of mineral resources on the seabed. The objective of this paper is to assess the technological feasibility and profitability analyses in terms of solid production rate, energy consumption per tonnage of mineral, and profitability per tonn...

Ronald Reagan and Justice Brennan have both suggested that computers can remove the controversy and politics from redistricting. ' In fact proponents of automated redistricting claim that the "optimal" districting plan can be determined, given any set of specified values. The Supreme Court has expressed a similar sentiment by addressing such mechanical principles as contiguity and compactness i...

This report presents a general method to compute configuration space (c-space) obstacle surfaces (c-surfaces) in planar quaternion space and for projecting points onto them. We parameterize the general c-surface using the rotation angle and the vector of translation parameters of the individual contacts. Once we compute the domain of the rotation parameter, we can setup the translation paramete...