The broad band X-ray spectrum of the lowmass X-ray binary (LMXB) GS 1826-238 was measured with the narrow-field instruments on BeppoSAX on April 6 and 7, 1997. The spectrum is consistent with the Comptonization of a 0.6 keV thermal spectrum by a hot cloud of temperature equivalent kT = 20 keV. During the observation two type I X-ray bursts were detected. From the bursts an upper limit to the di...

Topological insulators and topological superconductors are distinguished by their bulk phase transitions and gapless states at a sharp boundary with the vacuum. Quasicrystals have recently been found to be topologically nontrivial. In quasicrystals, the bulk phase transitions occur in the same manner as standard topological materials, but their boundary phenomena are more subtle. In this Letter...

All since 1951, it is now a weekly with 48 issues per year.

In this paper we explore different techniques that allow the user to direct interactive evolutionary search. Broadening interaction beyond simple evaluation increases the amount of feedback and bias a user can apply to the search. Increased feedback will have the effect of directing the algorithm to more fruitful areas of the search space. This paper examines whether additional feedback from th...

In this paper we introduce the class of stationary prediction strategies and construct a prediction algorithm that asymptotically performs as well as the best continuous stationary strategy. We make mild compactness assumptions but no stochastic assumptions about the environment. In particular, no assumption of stationarity is made about the environment, and the stationarity of the considered s...

We survey some of the problems associated with checking whether a given behavior (a sequence, a Boolean signal or a continuous signal) satisfies a property specified in an appropriate temporal logic and describe two such monitoring algorithms for the real-time logic MITL.

In this contribution we consider the idea that successful evolutionary design is best achieved in a networked system. We exemplify this thought by a discussion of artificial regulatory networks, a recently devised method to model natural genome-protein interactions. It is argued that emergent phenomena in nature require the existence of networks in order to become permanent.

Supply chain integration nowadays is considered an important approach to building and sustaining competitive advantages. Many previous empirical researches have investigated trust and power between suppliers and customers, yet, the effects of trust and coercive power on supply chain integration are still largely unknown. This study investigates trust, coercive power and their interaction and th...

The new name of the industrial game is continuous innovation. But what is continuous innovation? And how can we manage and organise for it? This article addresses these questions by, first of all, defining continuous innovation as the ability to combine operational effectiveness and strategic flexibility – exploitation and exploration – capabilities that have traditionally been regarded as anti...

Different from a bulk phase, a gas nanophase can have a significant effect on liquid motion. Herein we report a series of experimental results on molecular behaviors of water in a zeolite β of molecular-sized nanopores. If sufficient time is provided, the confined water molecules can be "locked" inside a nanopore; otherwise, gas nanophase provides a driving force for water "outflow". This is du...