Walsh—Hadamard变换ASIC的并行结构设计

针对具有广泛应用的Ｗａｌｓｈ－Ｈａｄａｍａｒｄ变换，研究了适合其ＡＳＩＣ设计的算法与ＳＦＧ阵列结构、位串计算、可变长功能等方面的内容，并给出了Ｗａｌｓｈ－Ｈａｄａｍａｒｄ变换ＡＳＩＣ的一种合理结构。     

用可变长短序列WHT芯片计算长序列Walsh—Hadmard变换

提出了能够将任一长序列变换有效地分解为一组定长的短序列变换的方法及算法，通过用短序列芯片计算这些短序列变换，从而可高速完成任意长序列的变换。     

番木瓜胚珠高频率体胚发生和植株再生

将番木瓜(Carica papaya L.)受精胚珠接种于MS IAA1mg/L BA2mg/L GA_3 2mg/L S(蔗糖)3％和1/2MS 谷胺酰胺400Mg/L CW(椰子汁)20％ S6％的培养基中,诱导愈伤组织,愈伤组织继代培养于MS CW 2％ S6％ 2.4-D 2mg/L的培养基上。进行了几种激素配比和基本培养基(MS和改良MS)对诱导胚性愈伤组织、体胚发生和植物再生培养基的比较实验。结果表明:在改良MS 硫酸腺嘌呤160mg/L NAA 1mg/L BA 0.5mg/L GA_3 1mg/L S4％培养基中获得理想胚性愈伤组织和体胚,在改良MS 硫酸腺嘌呤160mg/L NAA 1mg/L KT 0.5mg/L GA_3 1mg/L S4％产生正常具三裂片和根系的小植株。进行番木瓜体胚包埋、制成人工种子,实验获得小苗,并移栽成功。     

A New Definition of Virus

Security experts have not formally defined the distinction between viruses and normal programs. The paper takes user＇s intension as the criteria for malice, gives a formal definition of viruses that aim at stealing or destroying files, and proposes an algorithm to detect virus correctly. Compared with traditional definitions, this new definition is easy to understand, covers more malwares, adapts development of virus technology, and defines virus on the spot. The paper has also analyzed more than 250 real viruses and finds that they are all in the domain of the new definition, this implies that the new definition has great practical significance.     

Two t-out-of-n Oblivious Transfer Schemes with Designated Receiver

Oblivious transfer （OT） protocol is a fundamental cryptographical tool and widely used as a building block of secure computation. In this work, we propose two efficient t-out-of-n oblivious transfer schemes with the designated receiver. A common advantage of the two schemes is efficient. The total computation cost of the sender and the receiver is n ＋ 2t ＋ 1 modular exponentiations in first scheme that is three-round, and the total one of the sender and receiver is n ＋ 3t modular exponentiations in second scheme that is two-round. Another advantage of both schemes is designable.     

Design of a CMOS Adaptive Charge Pump with Dynamic Current Matching

A novel structure for a charge pump circuit is proposed, in which the charge-pump （CP） current can adaptively regulated according to phase-locked loops （PLL） frequency synthesis demand. The current follow technology is used to make perfect current matching characteristics, and the two differential inverters are implanted to increase the speed of charge pump and decrease output spur due to theory of low voltage difference signal. Simulation results, with 1st silicon 0. 25μm 2. 5 V complementary metal-oxide-semiconductor （CMOS） mixed-signal process, show the good current matching characteristics regardless of the charge pump output voltages.     

基于神经网络模型偶的投入产出建模（英文）

基于投入产出中使用和投入两个方向的非线性关系，本文利用神经网络技术建立了一种新的投入产出模型，并讨论了该模型在投入系数综合预测中的应用。文中报导了神经网络模型偶的修正了的反传训练公式。最后，中国广东省的仿真例子表明了所给算法的有效性和该建模方法的特点     

Solid-phase microextraction for flavor analysis in Harari Khat （Catha edulis） stimulant

This research examined the typical flavor compounds in the commonest type of Khat called Harari Khat grown in the region of Ethiopia.Twenty-eight compounds, which includes 1,2-Propanedione,1-Phenyl,Hexanol,Hexanal compounds,Limonene, Benzaldehyde with other flavors, were extracted by polydimethylsiloxane at room temperature for 30min from Khat samples,and identified by solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS).This method needs no organic solvents and required minimal sample.     

Progenitor cell maintenance requires numb and numblike during mouse neurogenesis

Neurons in most regions of the mammalian nervous system are generated over an extended period of time during development. Maintaining sufficient numbers of progenitors over the course of neurogenesis is essential to ensure that neural cells are produced in correct numbers and diverse types. The underlying molecular mechanisms, like those governing stem-cell self-renewal in general, remain poorly understood. We report here that mouse numb and numblike (Nbl), two highly conserved homologues of Drosophila numb, play redundant but critical roles in maintaining neural progenitor cells during embryogenesis, by allowing their progenies to choose progenitor over neuronal fates. In Nbl mutant embryos also conditionally mutant for mouse numb in the nervous system, early neurons emerge in the expected spatial and temporal pattern, but at the expense of progenitor cells, leading to a nearly complete depletion of dividing cells shortly after the onset of neurogenesis. Our findings show that a shared molecular mechanism, with mouse Numb and Nbl as key components, governs the self-renewal of all neural progenitor cells, regardless of their lineage or regional identities.