冷热电联供型微电网能量管理平台设计

能量管理是联供型微电网能否充分高效利用能源的关键,借鉴现有微电网能量管理平台,设计了一种联供型微电网能量管理平台结构框架,采用分层/分级式的结构,上层集中管理控制,底层分散控制。软件平台采用精确的系统元件设备模型,运用成熟的算法,求解优化模型提供日前调度计划。实时调度系统每5 min修正日前调度计划,抑制微电网内的功率波动,减少对上级调度的影响。采用图形模型数据库一体化的思想,设计了图形工具,使平台的可扩展性更强。     

脱水黄花菜加工过程中的预处理工艺研究

以黄花菜的主栽品种鲜猛子花为材料,在测定过氧化物 酶及多酚氧化酶活力的基础上,通过对热水、蒸汽及微波 灭酶等灭酶方法的研究,确定了蒸汽漂烫70～80s的最佳 灭酶工艺条件;同时,以护色剂种类、护色剂浓度、浸泡时 间为影响因素,进行了三因素三水平试验,得到了将原料 浸泡在0.5％的柠檬酸溶液中45min的最佳护色工艺。     

集光式高精二维追日跟踪器的建模与仿真研究

太阳能可利用量巨大,具有开发的便利性和清洁型,是一种极具开发前景的可再生能源。由于阳光会随著季节和天气有规律的变化,因此需要搭建一个高精度二维追日跟踪器,提高能量利用效率。论文建立了跟踪器传动链数学模型,使用S1MULINK进行了控制系统仿真,得到不同条件下的仿真曲线,以帮助系统的设计及改进。     

基于相似日原理和CPSO-Elman模型的光伏电站短期功率预测

为了提高光伏电站短期预测功率的精度,提出一种基于相似日原理和改进CPSO-Elman神经网络模型的光伏电站短期功率预测方法。将历史运行数据按照时长划分不同季节,采用欧式距离对天气类型进行处理并建立天气类型系数,通过灰色关联分析法和余弦相似度指标结合选取相似日。由于粒子群算法搜索速度慢且存在易早熟等缺陷,采用改进混沌粒子群（CPSO）来优化Elman神经网络的权值和阈值,对夏季不同天气类型条件下的短期功率分别预测。选用南疆某光伏电站2020年运行数据进行分析,结果表明:CPSO-Elman在非晴天条件下也具有较高的预测精度。     

2011年4月份十大重要安全漏洞分析

2011年03月21日至4月20日,国家计算机网络入侵防范中心发布漏洞总条目为360条,漏洞总数比上月增加了5.26。其中威胁级别为＂紧急＂的有51条,＂高＂的有60条,＂中＂的有205条,＂低＂的有44条。威胁级别为＂紧急＂和＂高＂的漏洞占到总量的30.83,从漏洞利用方式来看,远程攻击的有274条,本地攻击的有86条,局域网攻击的有0条。可见,能够从远程进行攻击的漏洞占绝大多数,这使得攻击者利用相应漏洞发动攻击更为容易。4月微软发布17个安全公告,其中9个为严重等级,8个为重要等级,共修复Microsoft Windows、Microsoft Office、Internet Explorer、Visual Studio、.Net Framework和GDI＋（图形设备接口）中的64个漏洞。此外,Adobe也发布通告公布了Adobe Flash Player、Adobe Reader和Acrobat中发现的一个零日远程代码漏洞,该漏洞已被利用进行攻击。建议广大用户及时安装补丁,增强系统安全性,做好安全防范工作,保证信息系统安全。     

ANALYSIS OF LAMINATE METAL MATRIX COMPOSITES

This article describes an integrated micro/ macro mechanical study of the thermo-elastic-uiscoplastic behavior of unidirectional metal matrix composites. The microme-chanical analysis of the elastic moduli are based on the representative unit cell approach with comparisons also drawn with the composite cylinder assemblage model. These “ homogenization ” results are later incorporated into the vanishing fiber diameter model develop the macroscopic stress-strain relations. The finite element method is employed for the analysis in conjunction with the Bodner and Partom thermoviscoplas-tic constitutive model for the associated macroscopic analysis and a “ smeared” element approach. Comparisons are made against experimental and analytical results available in the literature whenever feasible.     

温州医学院第一附属医院新院总体规划设计浅析——大型医院综合体总体布局与功能流线初探

文章从总体布局、功能关系、流线、消防等方面对温州医学院第一附属医院新院设计进行介绍,着重论述了医疗建筑设计过程中,从总体流线到单体流线设计以至消防设计均应坚持以功能为主、形式为辅的原则,才能取得事半功倍的效果。     

The effect of anticipatory strategies on the first day of smoking cessation.

The authors tested a model hypothesizing the predictors and the effects of anticipatory strategy use on the 1st day of smoking cessation using data from 63 participants in an ecological momentary assessment study of smoking cessation. Remaining abstinent on the 1st day of cessation was not associated with mean level of urges to smoke during tempting situations but was associated with anticipatory strategy use, which accounted for 18% of the variance. Getting rid of cigarettes contributed the most to this effect (β?=?-.397). Getting rid of cigarettes was itself predicted by 2 variables, lower nicotine dependence (β?=?-.264) and attending a formal smoking cessation class (β?=?.305), which accounted for 15% of its variance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of daily events on mood states in major depressive disorder.

Major depressive disorder (MDD) is characterized by high negative affect (NA) and low positive affect (PA), but little is known about emotional reactivity in daily life. The authors used experience sampling methodology to investigate changes in NA and PA following minor daily events in MDD compared with healthy participants. Contrary to expectation, MDD participants did not report more frequent negative events, although they did report fewer positive events. Multilevel regression showed that both NA and PA responses to negative events were blunted in the MDD group, whereas responses to positive events were enhanced. NA responses to negative events persisted longer in MDD participants. Depressed participants with a positive family history or longer current episodes showed relatively greater NA responses to negative events. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

让工程爆破技术更好地服务社会、造福人类——我国工程爆破60年回顾与展望

结合典型爆破工程,回顾了我国工程爆破自20世纪50年代以来的发展历史,将其总结为"起步、成长、壮大"三个阶段,简要介绍了各阶段工程爆破基础理论、工程实践、科学研究和行业组织的主要成果。并对我国工程爆破行业未来的发展方向进行了展望。