Sense of place and mental wellness amongst African immigrants in Canada

This study examines the effects of self-perceived mental wellness and other socio-economic variables on sense of place amongst Ghanaian and Somali immigrants living in Hamilton, Ontario. Research results are based on the analysis of survey questionnaires (n = 236) of Ghanaian and Somali immigrant adults, with recent (0–5 years), mid-term (6–10 years), and long-term (more than 10 years) residency in Canada. Our findings revealed several significant factors of sense of place, including self-perceived mental wellness, income, age, employment, citizenship status, marital status, dwelling type, and length of residency in Canada. The findings highlight the need for research to incorporate sense of place into studies on visible minority immigrants and to focus on those factors contributing to place attachment amongst recent immigrants.     

Exploring place attachment and visions of nature of water-based recreationists: the case of the longitudinal dams

This study concerns an innovative project in the Dutch river Waal: the construction of longitudinal dams. By splitting the river into a main and secondary channel, these dams significantly impact the river landscape and the way it is used by different stakeholders. We report the results of a baseline study of the expectations local water-based recreationists (fishermen and boaters) had of the longitudinal dams before they were constructed. In addition, we explore their levels of place attachment, and use the visions of nature approach to elicit their lay philosophy of nature. We found that fishermen were more strongly attached to the area than boaters. Though expectations of the dams were generally negative, this differed significantly between fishermen and boaters, and between different dimensions of landscape change. We demonstrate the relevance of place attachment and visions of nature for understanding how recreationists perceive landscape change.     

物质平衡-拟压力近似条件法确定气藏储量

物质平衡法作为一种有效的手段被广泛应用于气藏储量或井控储量的确定。为简便准确地确定气藏储量，笔者从物质平衡原理出发导出了"物质平衡条件"，求解气体渗流数学模型，得到了"拟压力近似条件"。将二者结合，提出了"物质平衡-拟压力近似条件法"（MB-QAC方法）。利用该方法，通过边界控制流阶段（产量波动相较于边界作用可忽略）的生产数据便可准确地计算气藏储量。定产量、定流压以及复杂生产计划条件下的数值模拟数据以及气藏实例验证了其有效性。在生产数据记录可靠的条件下，储量计算误差一般小于5%。同时，数值模拟结果表明，动态物质平衡方程是一种近似关系，拟压力近似条件对于模拟的各种情形均成立。由于考虑了岩石和束缚水的压缩性、气井产量的波动和气体性质的变化，MB-QAC方法具有一定的理论基础，对于异常高压和正常压力系统的气藏均适用，但不适用于水体活跃的气藏。     

天津钢铁炼钢厂倒罐站600t无基坑不断轨钢轨塞入式轨道称重装置的实践

本文简单介绍了由我们公司制造的安装于天钢倒罐站的600t无基坑不断轨钢轨塞入式轨道称重装置,着重介绍了对该称重装置的隔热防护措施以及停车对位联锁。     

Neuroscience and architecture: What does the brain tell to an emotional experience of architecture via a functional MR study?

Environment psychologically affects individuals. According to the base of cognitive psychology, there is a direct relationship between human behavior, environment, and emotional process. Assuming that pleasantness and unpleasantness are associated with peripheral nervous system activation, the current study aims to explore if the pleasant or unpleasant architectural places can stimulate the brain regions engaged in emotions or not. As the main contribution, we used functional magnetic resonance imaging (fMRI) measuring blood oxygenation level-dependent (BOLD) changes to effectively detect the brain's region that mainly responds to the emotional-perceptual processes. Based on the results of examining the emotional assessment model of “Pleasure-Arousal” applied to 140 students, 30 most-rated images representing 15 pleasant and 15 unpleasant places were shown to 32 participants in a 1.5-T MRI scanner. After applying standard preprocessing steps (re-alignment, slice-timing, co-registration, segmentation, normalization, and smoothing) to functional MR images, first-level analysis was applied to each subject. The results were evaluated using statistical corrections at different levels for female and male participants with the second-level analysis. In conclusion, it has been shown that there is a significant linkage between environmental experience and brain activation so that the architectural qualities can change blood flow in specific brain regions.     

一种双边自行车停车装置的设计

针对共享单车停放困难影响交通秩序的现状,迫切需要研发自行车停车装置。设计了一种“摩天轮”式新型双边立式自行车停车装置,由机械执行机构和控制系统两大部分组成。前者通过大转矩步进电机和蜗轮蜗杆减速箱带动圆盘转动形成旋转执行机构,可提供6个自行车车位;后者利用32位闪存微控制器STM32系列单片机来处理停车装置运行过程中产生的数据,实现用户在存取自行车过程中6个车位顺畅地切换以及定位。该装置具有空间利用率高、存取简便快捷、美观防盗等特点,为解决共享单车的停放管理问题提供一种可参考的解决方案。     

地下汽车库通风排烟系统的节能设计

分析了变频技术对风机调节的影响，指出地下汽车库通风排烟系统采用定风量设计不利于系统节能，该系统宜采用变风量设计，同时介绍了变频技术在地下汽车库通风排烟系统中的应用。     

6061合金时效及停放效应的工艺探讨

6061铝合金挤压型材经在线淬火处理后,在(175士5)℃、保温8h的时效制度下进行人工时效时,发现停放时间对人工时效后型材的力学性能有较大影响.停放时间在3h之内,经人工时效处理后,型材的强度较高,但延伸率偏低;在停放时间为8～20 h时,经人工时效处理后强度下降较大.根据客户对产品性能的不同要求,可选择适当的停放时...     

原地破碎浸出和分层崩落法地表堆浸采铀的成本,利润分析

本文以七九四矿为例，通过对原地破碎浸出和分层崩落法地表堆浸两种采铀方法的地质、经济、技术参数的模拟，进行了经济分析，推算出两种方法的单位产品成本和利润对矿石品位的函数关系式，绘制了成本和利润随品位的变化曲线，从而可以方便地确定当口收率一定时，原地破碎浸出采铀的合理边界品位，及不同平均品位的矿石应选择的采矿方法，在生产经营中起到参考和指导作用。