Einstein<Emphasis Type="Italic">A</Emphasis>-coefficients for rotational transitions in the ring-chain isomer of C<Subscript>5</Subscript>H<Subscript>2</Subscript>

Laboratory formation of four isomers of C⁵H² molecule is reported and detection of the ring-chain isomer (isomer 1) of C₅H₂ in cosmic objects has been suggested. For identification of a molecule in cosmic objects, one of the required input data is EinsteinA-coefficients (radiative transition probabilities) for the molecule. Here, we report EinsteinA-coefficients for electric dipole transitions in the ring-chain isomer of C₅H₂ among the rotational levels of the ground electronic and ground vibrational states up to 21 cm⁻¹.     

An integrated 0.35 μm CMOS optical receiver with clock and data recovery circuit

This paper presents an integrated optical receiver that operates at 1 Gb/s in a standard 0.35 μm digital CMOS technology. The receiver consists of an integrated CMOS photodetector, a transimpedance amplifier (TIA) followed by a post-amplification stage and a dual-loop clock and data recovery (CDR) circuit. At a wavelength of 860 nm, the circuit requires an average light input power of −19.7 dBm to obtain a bit-error rate (BER) of 10⁻¹². The complete receiver consumes a total power of approximately 155 mW from a 3.3-V supply. The core circuit area is 0.85×1.32 mm².     

A rapid turnaround design of a high speed VLSI search processor

Performance of relational database systems is a major impediment to their use in many applications. We have designed and implemented a customized RISC processor to accelerate associative search and aggregation operations for relational database systems. Since the processor is programmable and supports many queries concurrently, a system utilizing tens of such processors is capable of handling thousands of complex search requests simultaneously.

While the design of a VLSI programmable processor is a complex process, research prototyping requires a fast turnaround design process. We took advantage of the logic programming paradigm and the silicon compiler technology to explore and simulate architecture alternatives prior to the actual implementation. The prototyping process allowed us to complete the chip design in nine months. The resulting processor, fabricated in 2 Itm CMOS technology, consists of 91,000 transistors, executes over 18 million predicate evaluations per second, and searches database contents at 74 megabytes per second.     

Linear restrictions and two step least squares with applications

In this paper we consider the full rank regression model with arbitrary covariance matrix: Y = Xß + ε. It is shown that the effect of restricting the information Y to T = A′Y may be analyzed through an associatedi regression problem which is amenable to solution by two step least squares. The results are applied to the important case of missing observations, where some classical results are rederived.     

科研开发成果累累，工程应用效果显著

概述宁波大学地基处理中心自成立以来紧密结合宁波市工程建设中的需要，在地基处理、桩基工程质量检测等方面开展的科研开发工作，和取得的成果，这些成果在工程中的应用已取得了良好的经济和社会效益。     

The ?-positive center figure

Based on Gage's notion of a “positive center” of a planar convex set, an ε-positive center figure is defined, constructed, and illustrated through example. The existence of an ε-positive center point, and the convexity of the ε-positive center figure, is conjectured.     

高速数据采集系统中缓存区的设计

本文讨论了高速数据采集系统的设计，对如何利用低速ＳＲＡＭ来替代ＤＡＳ中的高速ＲＡＭ作了重点分析     

FIRST ORDER QUASILINEAR EQUATIONS IN SEVERAL INDEPENDENT VARIABLES WITH SINGULAR INITIAL DATA L~p（P＜∞）

ＦＩＲＳＴＯＲＤＥＲＱＵＡＳＩＬＩＮＥＡＲＥＱＵＡＴＩＯＮＳＩＮＳＥＶＥＲＡＬＩＮＤＥＰＥＮＤＥＮＴＶＡＲＩＡＢＬＥＳＷＩＴＨＳＩＮＧＵＬＡＲＩＮＩＴＩＡＬＤＡＴＡＬ~ｐ（Ｐ＜∞）￥（赵会江）ＺｈａｏＨｕｉｊｉａｎｇ（ＹｏｕｎｇＳｃｉｅｎｔｉｓｔＬａ?..     

刚体平面运动时瞬心两种轨迹间关系的一种证明

给出了刚体在平面平行运动时，刚体瞬心的本体极迹与空间极迹间关系的一种证明方法．     

Correlation Analysis of the Fluorescence Data of Some Benzaldehyde Derivatives by the Dual-Parameter Equation

Ithasbeenrecentlyestablishedthattherearefourcategoriesofpossiblecircumstancesforcorrelati0nanalyses0fradicalreactivitiesandspectralpropertiesbyEq.(l),Eq.(2)andEq.(3)."(I)Bothp0larandspin-del0calisationeffectsaretwortant,O.2l.O.(III)Thespin-delocalizationeffectspredominate,lpmdpJJ'I<0.2.(IV)Nocorrelationcanbeachieved.Wehavef0undthatthebehavi0roffluorescencespectraldataofsomestyrenes,'bycorrelati0nanalysiswiththedual-parameterEq.(…