氯苯甲酸生物降解及环境影响研究进展

I.IntroductionChlorobenzoic acids(CBAs)have been released to the envi-ronment intentionally due to their use in agriculture asherbicides,or unintentionally due to the function,they playedin the aerobic transformation of many chlorinated pollutants,such as polychlorinated biphenyls(PCBs)and alkyl benzenes.Moreover,chlorobenzoic acids are the major intermediate prod-ucts of aerobic catabolism of PCBs and one of the rate-limitingsteps in the overall PCBs degradation process.Degradation ofchl…     

Measures to Strengthen Regulation of Accounting

随着我国财务管理体系和会计制度的改革,企事业单位对本单位会计核算和管理具有了更大自主权,如何正确运用和行使这些权力,实施有效的会计监督,是保障各单位领导正当行使其理财和核算自主权的重要手段     

Research on the Sustainable Development of Chinese Small and Medium-Sized Enterprises - Construction and Application of R＆D Strategic Alliance

R ＆D strategic alliance is important for enterprises＇ sustainable development and it is a worth research for us. This paper firstly analyzes the condition and situation of tho small and medium-sized enterprises＇ strategic alliance. Then it points out that the small and medium-sized enterprises should choose a sttieable alliance organization, ally themselves with big enterprises, strive for the support of the government, and develop their technology through technology unions. Finally, it suggests that the government should create better innovation environment for R＆D strategic, alliance. A new way is also put forward for the applicotion and foundation of the small and medium-sized enterprises ＇ R＆D ,strategic alliance in China. It is also helpful for the sustainable development of small and medium-sized enterprises.     

我国股票市场的系统流动性实证研究

1997年的亚洲金融危机显示出个股的流动性受到市场因素的强烈影响,市场微观结构的研究开始更多地关注市场的系统性因素.本文以上海证券交易所全部A股的日交易数据为样本,证实了我国大陆股市存在系统流动性,与美国、香港股市相比,这一因素的影响更显著;根据流通股每年的流通市值分组检验,发现我国大陆股市与香港股市相似,存在着"倒U"形态的规模效应;与发达股票市场不同,我国股市系统流动性的显著性比例与流通市值无明显的单调关系.     

1 kW微波源机箱电磁耦合的并行FDTD模拟

微波源机箱的不同面板上开有不同数量和大小的矩形孔缝和散热通风孔,电磁脉冲可以通过机箱上的孔缝耦合进入微波源内部,对内部电路和设备造成干扰。通过自动网格剖分技术实现了1 kW微波源的快速建模,采用并行时域有限差分（FDTD）算法模拟了不同极化方向下高斯脉冲正入射1 kW微波源机箱的耦合问题,分析了微波源机箱的电磁脉冲耦合规律。研究结果表明,数值计算结果与电磁软件仿真结果吻合得比较好,电磁脉冲的极化方向对耦合进入微波源箱体内的电场强度影响不大,微波源机箱中心点的谐振特性明显。     

以创新促进无锡经济又快又好发展

过去的一年,是不平凡的一年。无锡市按照省委、省政府的部署和要求,在经济工作中突出重点,着力推进以搞好国有企业为中心的改革,加快股份制改造,促进股权多元化,使一批企业的活力明显增强;着力推进国有和集体经济的战略性改组,结合纺织压锭等措施,按照有所为、有所不为和有进有退原则,调整布局,优化结构,使一批企业增强了实力;着力推进科技创新、技术进步,增加技改投入,大力开发新品,使一批企业的竞争力和发展后劲有明显提高,１９９９年全市开发新品１０００多项,、其中１／３是高新技术产品。当前,宏观经济形势有利于加…     

Multinationals Invest Heavily in Information Industry

An Analysis by the China NewsAgency shows that in the firsthalf of the year when theChinese economy was picking up,multinational corporations in theinternational information industrywhich has great market and developmentpotential.Compaq Invests Heavily in ChinaVice President of the CompaqComputer Corporation Yu Xinchangrevealed to the public that the CompaqCorporation has experienced rapiddevelopment while reinforcing itsinvestment and cooperation strengths inChina.In the first half of …     

A Bayesian Nonparametric Investigation of the Predictive Effect of Exchange Rates on Commodity Prices

This study proposes a full Bayesian nonparametric procedure to investigate the predictive power of exchange rates in relation to commodity prices for three commodity-exporting countries: Canada, Australia, and New Zealand. We propose a new time-dependent infinite mixture of a normal linear regression model of the conditional distribution of the commodity price index. The mixing weights follow a set of Probit stick-breaking priors that are time-varying. We find that exchange rates have a positive predictive effect in general, but accounting for time variation does not improve forecasting performance. By contrast, the intercept in the regression and the lagged dependent variable show signs of parameter change over time in most cases, which is important in forecasting both the mean and the density of commodity prices one period ahead. The results also suggest that the variance is a large source of the time variation in the conditional distribution of commodity prices.     

《中外会计、审计发展大事年表》

1980年1月22日,中国国务院批转国家经委、财政部《关于国营工业企业利润留成试行办法》。2月26日,中国财政部通知,将《会计人员职权条例》中技术职称一章中的“总会计师”改为“高级会计师”;“总会计师”不再作为技术职称,只作为行政