In the article the changes associated with construction of machines used in die and die-less sheet metal forming have been presented. The selected future directions of development in new technologies and machines for sheet metal forming taking into account modern blank holding systems in the process of deep drawing have been indicated. Also the tendencies in introduction of new technologies and...

Employing cooperative communication in multihop wireless sensor networks provides the network with significant energy efficiency. However, the lifetime of such a network is directly dependant upon the lifetime of each of its individual sections (or clusters). Ignoring the fact that those sections close to sink have to forward more data (their own data plus the data received from the previous se...

" Only connect! That was the whole of her sermon. Only connect the prose and the passion, and both will be exalted, and human love will be seen at its height. Live in fragments no longer. Only connect, and the beast and the monk, robbed of the isolation that is life to either, will die. "

The dynamics of biological coevolution poses many problems of interest to the statistical-physics and complexsystems communities [1, 2]. Recently, we studied a coevolution model that is a simplified version of the one introduced by Hall, et al. [3, 4, 5, 6]. Our model, in which individuals give birth, mutate and die, displays punctuated equilibrialike, quiet periods interrupted by bursts of mas...

— The design of an efficient monolithic buck converter is presented in this paper. A low swing MOSFET gate drive technique is proposed that improves the efficiency characteristics of a DC-DC converter. A model of the parasitic impedances of a buck converter is developed. With this model, a design space is described which characterizes the integration of both active and passive devices of a buck...

About …fty years ago, Efron noted some counterintuitive properties of the long-term behavior of contests involving dice. For instance, consider the 6-sided dice whose sides are labeled (4,4,4,4,0,0), (3,3,3,3,3,3), (6,6,2,2,2,2), and (5,5,5,1,1,1). Each die has a 2/3 probability of rolling a higher number than the next one in the list, and the last has the same 2/3 probability of rolling a high...

To treat probability rigorously, we define a sample space S whose elements are the possible outcomes of some process or experiment. For example, the sample space might be the outcomes of the roll of a die, or flips of a coin. To each element x of the sample space, we assign a probability, which will be a non-negative number between 0 and 1, which we will denote by p(x). We require that p(x) = ...

1 Gruppen 2 1.1 Die Definition einer Gruppe . . . . . . . . . . . . . . . . . . . . . 2 1.2 Untergruppen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Die ganzen Zahlen . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 Diedergruppen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.5 Permutationen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.6...

An empirical study is performed on the local-optimum space of graph bipartitioning. We examine some statistical features of the fitness landscape. They include the cost-distance correlations and the properties around the central area of local optima. The study revealed some new notable results about the properties of the fitness landscape; e.g., the central area yielded fairly good quality in t...