An 11-year follow-up of measured interest and vocational choice.

408 university graduates were followed up 11 yrs after they had taken the SVIB, the American College Testing Programs Examination, and the Opinion, Attitude, and Interest Survey as freshmen. Expressed choice predicted future occupation more accurately than measured interest, and the accuracy of both was greatest when they were congruent. Congruence of either measured interest or expressed choice with future occupation was unrelated to occupational satisfaction. The predictive accuracy of the single highest occupational scale on the SVIB was greater than that obtained from a grouping of SVIB scales. The SVIB was as efficient a predictor for a group of undecided freshmen as it was for a group of decided students. The method used to predict future occupation from the SVIB profiles of freshmen yielded lower "hit rates" than the retrospective method used in most validity studies. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

PEDB: the Prostate Expression Database

Naloxone is generally considered to be a pure antagonist, but it may produce several behavioral effects, such as hyperalgesia or stimulation of respiration. We studied the effect of naloxone on gastric emptying and gastrointestinal transit in rats. Six to eight Wistar rats (200-250 g) were used for each experiment. Either saline or naloxone (0.01-10 mg/kg) was injected intraperitoneally at 0 min. At 30 min, radiolabeled saline or milk 1 mL was infused into the stomach. At 60 min, gastric emptying and gastrointestinal transit were calculated by measuring the radioactivity in the gastrointestinal tract. Naloxone significantly inhibited gastric emptying of saline (P = 0.002) and of milk (P < 0.05), but not the gastrointestinal transit of either (P > 0.05). Gastric emptying of saline showed a significant peak (P < 0.05) in the dose-response curve at 0.7 mg/kg. Therefore, naloxone significantly inhibits gastric emptying of saline and milk, but not the gastrointestinal transit of either. IMPLICATIONS: Although naloxone is generally considered to be a pure opioid receptor antagonist, it delays gastric emptying of saline or milk, as does morphine in the rat. However, it is uncertain from our results whether naloxone inhibited gastric emptying by antagonizing the effects of endogenous opioids.     

Development, microevolution, and social behavior.

The central questions of social development—from the roots of mother–infant attachment to the plasticity of aggressive behavior—pivot on the relations between genetic and ontogenetic sources of variance. It is proposed that (a) developmental, experiential, and microevolutionary processes typically collaborate, rather than compete, in achieving social adaptation; (b) social behavior patterns are mostly closed to modification in the course of development and across generations, but avenues of vulnerability exist in ontogeny and microevolution for dynamic, rapid, and reversible changes in key features; (c) a general avenue for change is delay or acceleration in the developmental onset of one or more features of the behavior pattern, which in turn modifies the functions and properties of the adaptive configuration; and (d) the features of social behavior that are open to rapid change in ontogeny should be open as well to rapid changes in microevolution, although different underlying processes may be involved. Empirical findings from the investigation of aggressive interactions are used to illustrate this proposal on the dual genesis and coincident adaptation of social behaviors. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Negative and positive luminescence in midwavelength infrared InAs-GaSb superlattice photodiodes

The quantum efficiency of negative and positive luminescence in binary type-II InAs-GaSb superlattice photodiodes has been investigated in the midinfrared spectral range around the 5-/spl mu/m wavelength. The negative luminescence efficiency is nearly independent on temperature in the entire range from 220 to 325 K. For infrared diodes with a 2-/spl mu/m absorbing layer, processed without anti-reflection coating, a negative luminescence efficiency of 45% is found, indicating very efficient minority carrier extraction. The temperature dependent measurements of the quantum efficiency of the positive luminescence enables for the determination of the capture cross section of the Shockley-Read-Hall centers involved in the competing nonradiative recombination.     

The Efficiency of Engineering Traffic Across Network Boundaries

With the arrival of wideband packet and circuit-oriented data services, it becomes a challenge to provide efficiently the desired quality of service for speech, packet data, and real-time data on a network. As these diverse networks will coexist, architectural studies on integrated heterogeneous networks suggest that a common radio resource manager be used to coordinate radio resource allocation between diverse network types. Initial studies show that supernets, which engineer traffic across wireless networks, are more efficient than operating separate cellular/wireless networks. Increased sharing occurs in supernets because a larger number of services compete for a larger pool of resources. If sharing can be shown to be efficient in general, then supernets should likewise be more efficient. This study decomposes the two-dimensional Markov chain to prove when sharing is beneficial and when it is not.     

Optimizing printable FEDs towards the standard for mass‐market displays

Abstract— This paper reviews the recent progress made at Printable Field Emitters (PFE), Ltd., in creating a 5.7‐in. quarter‐VGA field‐emission display (FED), describing some of the technical hurdles that were overcome and quantifying the performance of the display. First, however, some detailed market analysis is presented that shows that mass‐market displays in the 30–60‐in.‐diagonal range need to be significantly lower in cost than the present PDP technology if market penetration is to be successful. In addition, the results of cost‐modeling the manufacturing of a low‐cost FED with at least a printed cold‐cathode layer are presented. This paper shows that by scaling‐up the processes used in the demonstrator presented, sufficient cost savings are made, making a very marketable product. We present the architecture of our frit‐sealed display and describe some of the testing that was performed to characterize the devices. Finally, we discuss work in progress to optimize the manufacturing route and introduce even more cost savings and performance improvements.