this research was done in hydroponic environment in greenhouse at 3 stages (vegetative, flowering and full product) in 5 concentrations of cd (0.1, 0.3, 0.9, 2.7, and 10 mm) for investigating physiological and biological effects. this study revealed that the increase of cd concentration in understudy treatments causes the 49% reduction of sugar solution in 10 mm treatment. on the other hand, th...

Several descriptions of basically one transformation technique, viz. accumulation, are compared. Their basis, viz. the associativity and the existence of a neutral element inherent in a monoid, is identiied.

Two dysgenic models of declining general intelligence have been proposed. The first posits that since the Industrial Revolution those with low g have had a reproductive advantage over those with high g. The secondposits that relaxed purifying selection against deleteriousmutations inmodernpopulations has led to g declining due to mutation accumulation. Here, a meta-analytic estimate of the decl...

We study the spectrum of a periodic self-adjoint operator on the axis perturbed by a small localized nonself-adjoint operator. It is shown that the continuous spectrum is independent of the perturbation, the residual spectrum is empty, and the point spectrum has no finite accumulation points. We address the existence of the embedded eigenvalues. We establish the necessary and sufficient conditi...

We studied the importance of selection and constraint in determining the limits of adaptive radiation and the consequences of adaptive radiation in an experimental system. We propagated four replicate lines of the bacterium Pseudomonas fluorescens derived from a single ancestral clone in 95 environments, where growth was limited by the availability of a single carbon source for 1,000 generation...

We propose a model in which economic relations and institutions in advanced and less developed economies di er as these societies have access to di erent amounts of information. This lack of information makes it hard to give the right incentives to managers and entrepreneurs. We argue that di erences in the amount of information arise because of the di erences in the scale of activities in rich...

A textured surface appears slanted about a vertical axis when the image in one eye is horizontally enlarged relative to the image in the other eye. The surface appears slanted in the opposite direction when the same image is vertically enlarged. Two superimposed textured surfaces with different horizontal size disparities appear as two surfaces that differ in slant. Superimposed textured surfac...

In this paper we focus on large-scale IS implementation using the lens of absorptive capacity. Our case study concentrates on the double loop learning process that occurs over the implementation phase of ERP which we depict as a series of learning cycles. From this perspective, ERP implementation is best viewed not as a one-time process but rather as a series of implementation and practical use...

Evolutionary processes of natural selection may be expected to leave their mark on age patterns of survival and reproduction. Demographic theory includes three main strands--mutation accumulation, stochastic vitality, and optimal life histories. This paper reviews the three strands and, concentrating on mutation accumulation, extends a mathematical result with broad implications concerning the ...

The main changes of new capitalism concern mainly two spheres: the new technological paradigm and valorization process and the importance of finance. The main feature of the prevailing finance-led growth regime during the first decade of new millennium is then presented. In this perspective, particular attention is given to the analysis of the evolution and the logic characterizing mergers and ...