Scalable fabrication of nanowire photonic and electronic circuits using spin-on glass

We present a method which can be used for the mass-fabrication of nanowire photonic and electronic devices based on spin-on glass technology and on the photolithographic definition of independent electrical contacts to the top and the bottom of a nanowire. This method allows for the fabrication of nanowire devices in a reliable, fast, and low cost way, and it can be applied to nanowires with arbitrary cross section and doping type (p and n). We demonstrate this technique by fabricating single-nanowire p-Si(substrate)-n-ZnO(nanowire) heterojunction diodes, which show good rectification properties and, furthermore, which function as ultraviolet light-emitting diodes.     

Mechanisms of knowledge degradation in a resource management task ¶

Previous research has focused more on learning relative to forgetting despite both being generally recognized as important human performance issues. This research pursued an improved understanding of variables that impact the effectiveness with which humans can retrieve procedural knowledge, such as mathematics or programming. Two studies reviewed yielded varying results in experiments that investigated factors that can inhibit the retrieval of procedural knowledge from memory. To explore theoretical explanations for the opposing results, 32 human participants performed a resource management task in the multi-attribute task battery (MATB) manipulating task strategy and colour symbology. Human performance resulted in significant interference effects for a switch in strategy, but not with a change in the implicit meaning of colours. Therefore, the participants’ sensitivity to the implicit meaning of visual stimuli was not as significant as a more comprehensive change in rule structure associated with procedural knowledge.     

大型赛事、特种转播系统中传输与级联技术的应用与创新

Reidel公司是北京安达斯信息技术有限公司的合作伙伴．其MEDIORNET产品是实时的媒体网络．它是基于光纤信号传输网络架构下可以实现信号的传输路由以及信号的转换和处理．ROCKNET是数字音频网络架构产品．可以完成实时音频分发和转换．可以和MEDIORNET系统组合应用。     

Einfluß von Kupfer und Zinn auf das Seigerungsverhalten von Chrom und Nickel in Legierungen auf Eisenbasis

Laboratoriumsuntersuchungen zur Ermittlung der Verteilung der Legierungselemente Chrom, Nickel, Kupfer und Zinn auf Kristall und Schmelze von im Gleichgewicht gehaltenen Eisen-Mehrstoff-Legierungen. Auswirkung von Zusätzen an Kupfer und Zinn auf die Drehung der Konodenrichtung in bezug auf das Dreistoffsystem Eisen–Chrom–Nickel.     

Ein Verfahren zur iterativen Einschließung des positiven Eigenvektors einer irreduziblen,nichtnegativen Matrix

We develop a new iteration scheme giving bounds for the positive eigenvector of a nonnegative and irreducible matrix and the corresponding eigenvalue and test it on some examples.     

Thermal conductivity and heat capacity of synthetic fuel components

As part of a group contribution study on the liquid thermal conductivity of synthetic fuel components, experiments were performed to study the effects of dimethyl and ethyl-group additions to cyclohexane. A transient hot-wire apparatus was used to measure the thermal conductivity of these three fluids between ambient pressure and 10.4 MPa over a temperature range of 300 to 460 K. Thermal conductivities measured with this instrument have been assigned an accuracy of ±2% based upon a standard deviation comparison with a toluene standard established by Nieto de Castro et al. (1986). The thermal conductivities and excess thermal conductivities of the naphthenes investigated have been successfully linearized by plotting the data versus reduced density exponentiated to the power of five. By using data previously reported by Perkins (1983) and Li et al. (1984), this linear reduced density method is demonstrated for methyl, dimethyl, and ethyl additions to cyclohexane, as well as methyl and dimethyl additions to benzene. The naphthenes have been shown to have similar intercepts, with slope changes dependent upon the functional group attached to cyclohexane. The aromatics have a less pronounced slope change with additional functional groups attached to the benzene base. This instrument was also used to determine heat capacities, via the thermal diffusivity, to within ±10%.Paper presented at the Tenth Symposium on Thermophysical Properties, June 20–23, 1988, Gaithersburg, Maryland, U.S.A.