酸性蚀刻废液中铜的形态分布及电化学行为

在氯化物体系中,Cu^＋、Cu^2＋均能与Cl^-形成多种形态的配合物,存在形态及分布与溶液中各离子浓度有关。由于各种配合物的稳定性不同,致使Cu^＋、Cu^2＋氯化物的溶解度及电极电位也不同。对酸性蚀刻废液中铜的存在形态、电化学行为、以及采用隔膜电解法回收工艺的可行性进行了分析。     

车辆购置税减税政策对天津市税收收入的影响及思考

2009年,国务院决定,减征部分乘用车车辆购置税。减税政策的出台,对于培育汽车消费市场,促进国内汽车产业的稳定较快发展具有重要意义。本文就减税政策对我市税收的影响进行了全面对比分析,并就完善车辆购置税政策和强化其征管提出了建议。     

泊里红席

“炕上没有席,脸上没有皮”。往胶南市泊里镇一带,几乎家家户户都有在炕上铺红席的习俗,无论娶媳妇还是过年,泊里红席在当地常常是亲戚朋友间互相赠送的高档礼品。实际上,泊里红席的编织和使用,已经在当地有上千年的传承历史。     

Why Do People Leave? a Study Of Nonsupervisory Restaurant Employees’ Polychronic Time Use Preference and Turnover Intention

ABSTRACT

The purpose of the study was to present a comprehensive view on the associations among polychronicity, job satisfaction, work engagement, and turnover intention within a restaurant context. Using a sample of 252 servers in full-service restaurants, structural equation modeling results found that polychronicity positively linked with job satisfaction, work engagement, and turnover intention. An indirect effect from polychronicity to job satisfaction to turnover intention was found. Results can assist restaurant managers in selecting candidates that best fit their organization. It will also assist employees in determining which career path best matches their personality traits.     

延迟退休年龄:研究进展与若干争议

延迟退休年龄的政策取向在学界引起了广泛争议,焦点主要集中在延迟退休年龄是否会造成"就业挤出"效应及挤出效应的大小、延迟退休年龄是否会改善养老金财务状况。梳理争议各方所得结论的逻辑起点、研究方法、理论基础乃至学科视角将为进一步的理论研究和政策制定提供共识基础和新的切入点。     

The China model view is factually false

ABSTRACT

Using a cross-regional analysis of China, this article shows that the China model view is factually false and the universal model view is factually true. It is the marketization and development of non-state sectors, rather than the strong power of government and the state sector, that have driven the Chinese economy to grow fast and to be increasingly innovative. If China wants to sustain its economic performance, it must stay on the way to continuing marketization. Otherwise, China will fall into stagnation.     

一种有限元并行共轭梯度算法在计算力学中的应用

本文以POSSION方程为研究背景,实现了有限元的并行计算.通过对定解区域进行特殊的划分,达到了不需合成结构刚度矩阵的目的,并在此基础上应用线性方程组的共轭梯度法,使计算的并行性得到了很好的拓展,实现了从网格划分、刚度矩阵的合成到方程求解的并行执行.并将该算法应用在计算力学中.程序在西北工业大学高性能计算中心的HPRX2600上进行了数值实验,结果表明,该方法具有良好的加速比.