BANK LENDING TO MINORITY AND LOW-INCOME HOUSEHOLDS AND NEIGHBORHOODS: Do Community Reinvestment Agreements Make A Difference?

ABSTRACT: This article marks a new direction in research on the Community Development Act (CRA) by examining the outcomes of CRA agreements, comparing the mortgage and home improvement lending of banks with and without agreements. The analysis examines Home Mortgage Disclosure Act data for all the states and metropolitan areas with CRA agreements in effect and compares mortgage and lending to low-income and minority households and neighborhoods by banks with and without agreements and by banks with different types of agreements. Banks with CRA agreements appear to be more responsive than other banks to the credit needs of minority and low-income households and neighborhoods, especially when independent mortgage banks, which are not subject to the CRA, are removed from the analysis. Few significant differences, however, were found in the lending practices of banks with different types of agreements, including banks with negotiated and voluntary agreements.     

基于Spring和Aglet构建网络管理系统

针对网络管理系统传统开发方法的不足,在介绍Spring框架和Aglet平台的概念和技术优势的基础上,提出了一种基于Spring和Aglet的网络管理体系结构,并构建和开发了一个分布式网络管理系统,减少了开发复杂性,缩短了系统的开发时间。该系统具有良好的灵活性、扩展性和维护性,能够极大地提高网络管理的效率。     

基于Spring和Aglet构建网络管理系统

针对网络管理系统传统开发方法的不足，在介绍Spring框架和Aglet平台的概念和技术优势的基础上，提出了一种基于Spring和Aglet的网络管理体系结构，并构建和开发了一个分布式网络管理系统，减少了开发复杂性，缩短了系统的开发时间。该系统具有良好的灵活性、扩展性和维护性，能够极大地提高网络管理的效率。     

基于DM642视频采集处理系统硬件设计

TMS320DM642是TI公司推出的一款具有专用视频接口（Videoport）的高性能媒体处理DSP，具有强大的？DSP内核和优化的总线结构。以DM642芯片为数据处理核心，建立了包含视频AD＆DA模块、视频处理与通信部分的视频采集处理系统，实现了外部模拟视频信号输入、模，数转换、视频采集、视频处理、数，模转换、视频及目标信息输出的完整功能，并为后续控制平台提供了通用接口。系统使用整体编程化的开发方法，采用部分调试与整机联调的调试方法提高了调试效率，加速了系统的研制。     

AlTiB晶粒细化剂微观组织的电镜观察

简要概括了AlTiB合金细化剂生产中影响其质量的几个环节.采用非腐蚀方法制备试样,保持样品真实的状态.在扫描电镜下观察了铸态、加工变形后中间合金微观组织的变化,得到一些更详细的信息.概括了以前一些细化机制.讨论了TiAl3、TiB2粒子在晶粒细化过程中可能起的作用;并把"表面重构"和"过渡层"的概念引入到AlTiB中间合金细化剂细化机制的讨论中.     

Combining Neural Network Forecasts on Wavelet-transformed Time Series

We discuss a simple strategy aimed at improving neural network prediction accuracy, based on the combination of predictions at varying resolution levels of the domain under investigation (here: time series). First, a wavelet transform is used to decompose the time series into varying scales of temporal resolution. The latter provides a sensible decomposition of the data so that the underlying temporal structures of the original time series become more tractable. Then, a dynamical recurrent neural netork is trained on each resolution scale with the temporal-recurrent backpropagation algorithm. By virtue of its internal dynamic, this general class of dynamic connections network approximates the underlying law governing each resolution level by a system of non-linear difference equations. The individual wavelet scale forecasts are afterwards recombined to form the current estimate. The predictive ability of this strategy is assessed with the sunspot series.     

压水堆燃料棒锆-4包壳在大破口LOCA条件下的鼓胀爆破实验

研制成ＦＲＳ－２型压水堆锆－４包壳电加热模拟燃料棒，提供一种先进的实验方法和瞬态测量技术，目的在于研究锆－４包壳在大破口ＬＯＣＡ条件下的鼓胀爆破行为，给出秦山核电厂安全分析所需的爆破数据。报道了模拟燃料棒的结构、性能、包壳鼓胀爆破实验方法和破口检验内容。     

TOXICITY, MUTAGENICITY AND TERATOGENICITY OF BREVIANAMIDE, VIOMELLEIN AND XANTHOMEGNIN; SECONDARY METABOLITES OF PENICILLIUM VIRIDICATUM

The three major secondary metabolites of Penicillium viridicatum, brevianamide, xanthomegnin, and viomellein were tested for mutagenicity by the Salmonella/microsome test and for toxicity and teratogenicity by the chick embryo test. None were mutagenic. Viomellein was mildly toxic and teratogenic, xanthomegnin was the most toxic and was not a teratogen, and brevianamide was not toxic yet was the most teratogenic.     

Structural analysis of flagellar axonemes from inner arm dynein knockdown strains of Trypanosoma brucei

Trypanosoma brucei is a protozoan flagellate that causes African sleeping sickness. Flagellar function in this organism is critical for life cycle progression and pathogenesis, however the regulation of flagellar motility is not well understood. The flagellar axoneme produces a complex beat through the precisely coordinated firing of many proteins, including multiple dynein motors. These motors are found in the inner arm and outer arm complexes. We are studying one of the inner arm dynein motors in the T. brucei flagellum: dynein-f. RNAi knockdown of genes for two components of dynein-f: DNAH10, the α heavy chain, and IC138, an intermediate chain, cause severe motility defects including immotility. To determine if motility defects result from structural disruption of the axoneme, we used two different flagellar preparations to carefully examine axoneme structure in these strains using transmission electron microscopy (TEM). Our analysis showed that inner arm dynein size, axoneme structural integrity and fixed central pair orientation are not significantly different in either knockdown culture when compared to control cultures. These results support the idea that immotility in knockdowns affecting DNAH10 or IC138 results from loss of dynein-f function rather than from obvious structural defects in the axoneme.