在移动市场中推广应用蓝牙技术

根据In-Stat/MDR的统计,具备蓝牙功能的移动电话数量到2005年最少可达3亿之多。蓝牙越来越多地得到采用,其明显的证明之一就是新型手机和无线计算器件都嵌入蓝牙功能,并具备一系列新兴的新式附件,其中包括PC卡、USB适配器和RS232扩展器等。目前已开发了近千种具备蓝牙功能的产品。随着具备蓝牙功能的器件在市场中不断涌现,器件间的互用性应获得保证,而蓝牙解决方案的物料单(BOM)成本也会进一步降低。互用性应用、低功耗和成本效益的不断发展,以及可用性的提高和操作者支持的增多,都将推动新型蓝牙应用的开发。“开箱即可用”解决方案…     

Evaluation of Transesterified Hardened and Liquid Soybean Oils as Raw Materials for Margarine Oils

Margarine oils have been prepared by transesterification of blends of hardened and liquid soybean oils or by blending of transesterified hardened oils with liquid soybean oil. The dilatometric characteristics of those oils and their nutritional values (as characterized by the L/S ratio of linoleic acid to total saturated acids) have been compared with the same parameters of margarine oils from local and foreign table margarines. It was concluded that margarine oils of suitable melting characteristics and of an average nutritional value (L/S ratio of about 0.70) can be prepared from blends of soybean oils alone, using transesterification process.     

Feature-Based Sequence-to-Sequence Matching

This paper studies the problem of matching two unsynchronized video sequences of the same dynamic scene, recorded by different stationary uncalibrated video cameras. The matching is done both in time and in space, where the spatial matching can be modeled by a homography (for 2D scenarios) or by a fundamental matrix (for 3D scenarios). Our approach is based on matching space-time trajectories of moving objects, in contrast to matching interest points (e.g., corners), as done in regular feature-based image-to-image matching techniques. The sequences are matched in space and time by enforcing consistent matching of all points along corresponding space-time trajectories. By exploiting the dynamic properties of these space-time trajectories, we obtain sub-frame temporal correspondence (synchronization) between the two video sequences. Furthermore, using trajectories rather than feature-points significantly reduces the combinatorial complexity of the spatial point-matching problem when the search space is large. This benefit allows for matching information across sensors in situations which are extremely difficult when only image-to-image matching is used, including: (a) matching under large scale (zoom) differences, (b) very wide base-line matching, and (c) matching across different sensing modalities (e.g., IR and visible-light cameras). We show examples of recovering homographies and fundamental matrices under such conditions.     

Reducing Lattice Thermal Conductivity of the Thermoelectric Compound AgSbTe2 (P4/mmm) by Lanthanum Substitution: Computational and Experimental Approaches

In this study we performed lattice dynamics first-principles calculations for the promising thermoelectric (TE) compound AgSbTe₂, and estimated the stability of its three polymorphs over a wide temperature range from 0 to 600 K. We calculated the vibrational density of states of the AgSbTe₂ (P4/mmm) phase. The results suggested that formation of substitutional defects at Ag-sublattice sites impedes lattice vibrations, thereby reducing lattice thermal conductivity. We focused on calculations based on the Debye approximation for the compound La_0.125Ag_0.875SbTe₂, and predicted reduction of the average sound velocity from 1684 to 1563 m s^?1 as a result of La doping. This is manifested as a ca. 14% reduction in thermal conductivity. To confirm the results from computation we produced two Ag–Sb–Te-based alloys, a ternary alloy without La addition and a quaternary alloy containing La. We measured the thermal conductivity of both alloys by use of the laser flash analysis method, and, as a result of La alloying, observed a reduction in thermal conductivity from 0.92 to 0.71 W m^?1 K^?1 at 573 K, as calculated from first principles.     

Age-specific variation in aneuploidy incidence among biochemical screening programs

A human cytomegalovirus mutant that was isolated for resistance (10-fold) to the antisense oligonucleotide fomivirsen (ISIS 2922) exhibited cross-resistance to a modified derivative of fomivirsen with an identical base sequence but little or no resistance to an oligonucleotide with an unrelated sequence. No changes in the mutant's DNA corresponding to the fomivirsen target sequence were found.     

A cohesin domain from Clostridium thermocellum: the crystal structure provides new insights into cellulosome assembly

The most common major comorbid disorders associated with eating disorders include substance use disorders, personality disorders, mood disorders, anxiety disorders, and obesity. To test conceptual models of the relationship between the eating disorders and these comorbid disorders, complex research paradigms are needed, including epidemiological studies, behavior-genetic studies, and longitudinal research designs. Comorbidity may be a significant factor to consider as approaches to the treatment of eating disorders continue to evolve.     

Comparison of color Doppler ultrasonography and endoscopic ultrasonography for preoperative evaluation of the mesenteric-portal axis in pancreatic lesions

Simple complete dorsal fractures of the proximal phalanx were repaired in 2 mature pleasure horses with cortical bone screws placed in lag fashion. Healing occurred within 12 weeks and both horses returned to their previous performance level of light pleasure riding within 6 months of injury.