碳中和下低温地热水资源利用技术研究

在我国明确提出“碳中和”目标与清洁取暖背景之下,利用低碳能源进行建筑供暖是必然趋势。为探索改造既有建筑燃煤锅炉供暖为低温水热型地热资源供暖的可行性,以陕西某县城老城区为例,结合低温水热型地热能的特点进行了细化设计。通过分析既有建筑群冬季采暖热需求,初步确定采暖设计供/回水温度,对比了单级离心式热泵机组并联系统和两级螺杆式热泵机组串联系统设计。随后,对“小温差,大流量”的并联系统和“大温差,小流量”的串联系统进行了技术经济对比,串联系统比并联系统运行能效高8.1%,增量投资收益率为22.6%。进一步分析了冷凝燃气锅炉作为热源调峰的必要性。研究可为其他地区的既有建筑供暖改造提供技术参考。     

海洋活性肽在洗发香波中的应用

研究了海洋活性肽在洗发香波中的应用。结果表明,烫发前经活性肽洗发香波处理的头发跟对照组相比,平均最大载荷增加0.26 N;烫发后经活性肽洗发香波处理的头发跟对照组相比,平均最大载荷增加0.14 N。并得出海洋活性肽在洗发香波中的最佳添加质量分数为1.0%。     

论东北三省试点企业固定资产核算之异同

国家为鼓励东北三省老工业基地进行固定资产投资，鼓励进行设备更新改造建设，国家财政部、税务总局给予了一系列优惠政策，谈谈对这些优惠政的理解。     

基于异构磁盘阵列的数据备份/恢复技术研究

随着网络技术的快速发展与网络资源的日益丰富。数据的存储量级急速增长,数据保护的重要性显得尤为重要,如何快速有效地对数据进行备份/恢复成为数据保护领域亟待解决的关键问题之一。通过对异构磁盘阵列的数据分配方法进行优化,使不同磁盘阵列间进行数据备份/恢复速率提升。提出划分异构磁盘I/O带宽方式提高磁盘数据读取速度的可行性方案,与传统的数据备份/恢复相比,在时间利用率和备份性能上都得到了很大的提高。     

博弈论在企业管理活动中的应用分析

作为方法论，博弈论从它诞生之日起就被广泛地应用着，它不仅与现代经济活动紧密相关，而且融入企业管理活动之中，成为现代企业管理成败的关键因素之一。本文试图从古诺产量决策模型的博弈实例，进一步阐述博弈论在现代企业管理中不可或缺的作用。     

关于中国潜在经济增速存在下滑趋势的讨论

近期关于中国经济存在下降趋势甚至会步入“中等收入陷阱”的讨论非常热烈。一种观点认为，当经济赶超型国家人均收入达到11000国际元之后，经济增速会出现明显回落，而我国正处于这样的增长阶段；另一种观点认为，我国正处在城市化的“中场休息”阶段，巨大的城市化潜力和后发优势还将使中国经济保持20年以上超过8％的增长。本文以总量平衡式的供给侧为研究角度，对上述问题做出分析和判断，重点分析我国近几年经济增速“异常”下降的原因，并提出政策建议。     

纸质媒体生存危机探析

在综合分析国内外报纸的生存现状调查资料的基础上,提出传统纸质媒体所面临的生存危机：受众的大量流失是其市场生存的最大危机,广告收入的下降及发行成本的上升促使其采取减少发行量和报纸涨价的无奈选择,由此可能进入受众流失——广告收入下降——减少发行量——报纸涨价——更多的受众流失的恶性循环。此外互联网、手机等新媒体的迅猛发展将加速传统纸质媒体的衰微。     

The role of veterinarians and feed-store vendors in the prescription and use of antibiotics on small dairy farms in rural Peru

This study aimed to describe and compare the role of veterinarians and feed-store vendors in the use of antibiotics on small dairy farms in Cajamarca, Peru, a major dairy-producing center characterized by small, rural farms with poor, mostly uneducated farmers. We used a purposive sampling strategy to recruit 12 veterinarians into 2 focus group discussions and supplemented these data with 8 semi-structured interviews with feed-store vendors. Participants reported that inappropriate antibiotic usage was widespread among their clients, which may prevent the efficient use of drugs on farms where animal disease can be devastating to the livelihood of the farmer. Participants also identified many barriers to appropriate prescribing and use, including availability of drugs, competition from other prescribers, economic constraints and habits of farmers, and limited farmer knowledge of drugs and disease. Veterinarians expressed mistrust toward nonprofessional prescribers, whereas feed-store vendors felt that veterinarians were important partners in promoting the health of their clients’ animals.     

When it comes to pay, do the thin win? The effect of weight on pay for men and women.

Cultivation theory suggests that society holds very different body standards for men versus women, and research indicates that the consequences of defying these social norms may not be linear. To test these notions in the employment context, we examined the relationship between weight and income and the degree to which the relationship varies by gender. For women, we theorized a negative weight–income relationship that is steepest at the thin end of the distribution. For men, we predicted a positive weight–income relationship until obesity, where it becomes negative. To test these hypotheses, we utilized 2 longitudinal studies, 1 German and 1 American. In Study 1, weight was measured over 2 time periods, and earnings were averaged over the subsequent 5 years. Study 2 was a multilevel study in which weight and earnings were within-individual variables observed over time, and gender was a between-individual variable. Results from the 2 studies generally support the hypotheses, even when examining within-individual changes in weight over time. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Does Second-Home Ownership Affect Primary Housing Demand?

Using American Housing Survey (AHS) data, this empirical paper suggests that if someone already has a second home, it may not affect their decision about the price of a new primary home, and they will not be likely to choose a cheaper one than their counterpart without a second home. This runs counter to the implicit suggestion of a previous study that second-home ownership may reduce the demand for primary housing. Many baby boomers have second homes and they have not yet locked up their current primary housing as the final home of their lifetime and may even trade up before they trade down. At present, except for continuous immigration, few other factors point toward growth in housing demand. Thus the finding here can be seen as good news for the housing market when it eventually recovers from its current downturn and crisis in mortgage lending.