To the uninitiated, and even the old hand, the computer industry is an intimidating agglomeration of firms, markets, and buyers, all changing quickly in response to the latest innovation or recently invented applications. Technological opportunities arise rapidly, altering the technical landscape more quickly than in any other industry. Established firms feel perpetually under siege, particular...

I consider directed technical change in an economy where market structure is endogenous. Endogeneity of market structure leads to both theoretical and empirical implications that are substantially different from those in the existing literature and that in some cases are rather surprising. There are two dimensions of directed technical change: directed firm entry (new firms enter the industry w...

The advantages of a central ‘data warehouse’ that holds relevant project data are obvious. Due to their flexibility and given functionalities professional Relational Data Base Management System (RDBMS) (like ORACLE) seem to be better suited for this purpose than Object Oriented Data Base Systems (OODBS) that are optimized for speed and structural sophistication. In modern accelerator control di...

The present research investigated the mechanisms guiding habitual behavior, specifically, the stimulus cues that trigger habit performance. When usual contexts for performance change, habits cannot be cued by recurring stimuli, and performance should be disrupted. Thus, the exercising, newspaper reading, and TV watching habits of students transferring to a new university were found to survive t...

Traditional real-time IP traffic analysis applied on todays’ highspeed network links suffers from the lack of scalability. Although sampling proves to be a promising approach, there are application scenarios foreseen, in which decisions cannot be based on sampled data, e.g., for usage-based charging or intrusion detection systems. Moreover, traditional traffic analysis mechanisms do not map the...

Recent widening of the wage gap between skilled and unskilled workers has been attributed mainly to skill-biased-technical-change and to trade liberalization. This paper examines the effects of the two in a unified model, in which trade and technology adoption are endogenous. The paper has two main results. First, technical progress increases the wage gap in developed and in less developed coun...

The deposition process of wire and arc additive manufacturing (WAAM) is usually planned based on a bead geometry model (BGM), which represents the relationship between geometries (e.g. width, height) required parameters. However, actual situation may deviate from one in BGM built, such as varied heat dissipation conditions, resulting morphological changes deposited beads geometrical errors form...

BACKGROUND It is estimated that about half of currently published research cannot be reproduced. Many reasons have been offered as explanations for failure to reproduce scientific research findings- from fraud to the issues related to design, conduct, analysis, or publishing scientific research. We also postulate a sensitive dependency on initial conditions by which small changes can result in ...