永康市副中心城镇绿色空间系统规划探索

城市绿色空间系统规划是城市规划的重要方面,也与城市形象息息相关。文章以浙江省永康市副中心城镇为例,探讨城镇密集地区绿色空间系统规划的内容及方法,主要包括城镇污染综合防治、总体布局及景观规划三个方面的内容。     

绿色农业信息化建设初探

农业信息化是我国绿色农业可持续发展的主要保障.在分析了当前我国绿色农业信息化建设的现状和问题的基础上,提出了加快农业信息化建设步伐,促进我国绿色农业发展的对策措施.     

超距空间的连通性

利用超距空间的基本性质及拓扑空间的连通理论,得出超距空间及其子空间、积空间既不是连通空间,也不是弧连通空间,而非离散的超距空间不是局部连通空间。     

Ishikawa迭代的非线性算子不动点逼近

本文在一致光滑的 Banach 空间,运用 Ishikawa 迭代,给出了方程解的逼近,进而将 C.E.Chidume 所研究结果从 Lipschitz 条件降至一致连续。关键词:巴拿赫空间;非线性算子;Ishikawa 迭代;强增生算子;强伪压缩算子;一致连续     

绿色GDP核算研究的误区及其澄清

我国在绿色GDP核算研究中存在着将实际环保费用作为“重复计算因素”从现行GDP中扣除的误区。无论从核算技术的角度上,还是从经济模型的推导上,都证明在绿色GDP核算中不应扣除实际的环保费用,而应扣除的是“潜在的”环保费用。     

Personality and older consumers’ green behaviour in the UK

The UK government has set an ambitious target of reducing greenhouse gas emissions by 80% before 2050. An interesting segment that could help to achieve this is older consumers, due to their growing numbers. There seems to be a lack of attention, in the research looking specifically at different age categories of older consumers’ green behaviour, and whether their level of greenness can be explained by their personality. Using Socioemotional Selectivity Theory and Time Perspective, the research presented here was designed to provide an exploratory analysis of how the green behaviour of older consumers is explained by their personality types. Based on the responses of 204 older consumers in the UK, our results find the openness personality trait to be positively linked to green behaviour, whilst the extraversion personality trait is negatively related to green behaviour. Although the level of green behaviour increased with older consumers’ age, this did not reach significance.     

Forecasting China's foreign exchange reserves using dynamic model averaging: The roles of macroeconomic fundamentals,financial stress and economic uncertainty

We develop models for examining possible predictors of growth of China's foreign exchange reserves that embrace Chinese and global trade, financial and risk (uncertainty) factors. Specifically, by comparing with other alternative models, we show that the dynamic model averaging (DMA) and dynamic model selection (DMS) models outperform not only linear models (such as random walk, recursive OLS-AR(1) models, recursive OLS with all predictive variables models) but also the Bayesian model averaging (BMA) model for examining possible predictors of growth of those reserves. The DMS is the best overall across all forecast horizons. While some predictors matter more than others over the forecast horizons, there are few that stand the test of time. The US–China interest rate differential has a superior predictive power among the 13 predictors considered, followed by the nominal effective exchange rate and the interest rate spread for most of the forecast horizons. The relative predictive prowess of the oil and copper prices alternates, depending on the commodity cycles. Policy implications are also provided.     

ZY5000/15/32掩护式液压支架的优化设计

当支架工作一定时间后出井维护时,需要将前梁与顶梁之间的销轴拿掉后改为运输销轴连接,由于井底空间、设备有限,操作极为不便;另外,由于前梁千斤顶是靠销轴受力,因为支架工作时间比较长且井下环境恶劣,导致销轴出现变形、生锈等现象,以致销轴不易拆卸。     

终身学习视角下公共图书馆的转型与发展思考

公共图书馆作为公共文化服务体系的重要组成部分,在构建学习型社会的大背景下,为促进终身学习的理念,借鉴国外图书馆的前沿探索,提升人文素质和知识内涵,实现公共图书馆在新的历史形势下自身的转型与发展。