测定生活饮用水中耗氧量的主要影响因素

随着人们对食品健康的重视程度不断增加,生活饮用水的质量逐步受到更多的关注。耗氧量作为反映水体污染的重要指标,根据标准GB/T 5750.7—2006采用高锰酸钾滴定法,对水体中存在的悬浮物和能被高锰酸钾氧化的有机物和无机物的量进行测定。耗氧量含量的高低一定程度上表明饮用水中受污染程度的高低。通过饮用水中耗氧量的检测,对水质监控有重要意义。但高锰酸钾滴定法的氧化反应程度和进程较为复杂,对于准确测定水中耗氧量有一定的难度。因此,对影响测定的主要因素如加热时间、滴定温度等进行分析显得尤为重要。文章对这些影响因素的进行总结,以提高饮用水中耗氧量的检测正确率。     

大批量定制下毛衫组织的设计开发

毛衫产品设计是羊毛衫大批量定制的重要技术之一。而在毛衫产品设计中,毛衫组织的设计与开发又是其关键技术之一。论文通过分析毛衫组织结构的重要性,设计开发了5款毛衫组织小样,并在电脑横机上实现了编织,对每个试样的组织构成和编织过程作了简要的说明,意在为毛衫设计者提供丰富的灵感来源,使针织毛衫设计满足现代消费者日益增长的个性化需求。     

Adoption of Product and Process Innovations in Differentiated Markets: The Impact of Competition

The paper examines the effects of the degree of competition on firms'decisions to innovate in differentiated markets. Firms favor productinnovations if they produce close substitutes (so competition is severe) andfavor process innovations if products are differentiated (so competition isless severe). Assumptions on the strategic complementarity of product andprocess innovations and on the decreasing returns of a product innovationare found to be the critical assumptions in the sense of Milgrom and Roberts (1994).     

Enhancing New Product Adoption at the Base of the Pyramid: A Contextualized Model

Companies are recognizing and pursuing the opportunity to serve the market known as the base of the pyramid (BOP), i.e., consumers who live in poverty in developing countries. The BOP constitutes the largest remaining global market frontier for businesses. Until recently, it has been ignored because of its seeming unattractiveness and insurmountable challenges compared with middle‐ and high‐income markets. However, BOP consumers desire and are able to pay for quality products tailored to their needs. In response, firms are developing new products specific to the demands and conditions of this low‐income population. To innovate effectively, ensuring new products are well received, firms need to know how to enhance new product adoption among these consumers despite the barriers of poverty. We address this need by developing a model of adoption contextualized to the BOP. Based on theories of innovation and poverty, and drawing on the emergent subsistence market literature, we propose that certain new product characteristics, social context dynamics, and marketing environment approaches moderate or counter some of the limits of poverty, making adoption possible. We then discuss the managerial and theoretical implications of our model for innovation practitioners and researchers.     

影响检泵作业质量的因素剖析及对策

通过对检泵维修的日常工序管理及影响检泵维修质量的客观因素及关键部件工况环境的分折,寻找出提高检泵作业质量的有效途径。制定出切实可行的对策措施,全方位的提高检泵维修质量水准。     

Adoption of improved maize varieties in Southern Ethiopia: Factors and strategy options

This paper identifies factors that influence the decision behavior of farmers in Southern Ethiopia in adopting improved maize varieties by estimating a logistic regression. Data for this study came from 222 farmers interviewed as part of a national adoption survey conducted in three selected maize growing administrative zones of Southern Ethiopia in 1998. The paper also assesses the impact of pure and mixed strategy options on the probability of adoption of improved maize varieties through simulation under different scenarios. As far as pure strategies are concerned, the credit strategy is more powerful than the others in terms of raising the probability of adoption. However, results from the analysis of pure versus mixed strategies imply that mixed strategies are no necessarily much better than pure strategies.     

Factors Impacting the Adoption and Effectiveness of the World Wide Web in Marketing

With the increased popularity of the World Wide Web, companies are rushing to have a presence on the Web. However, many companies do not know whether the Web will be effective for them, or what they can do to increase its effectiveness. Few empirical studies have been done on what companies can do to increase the adoption and effectiveness of the Web in marketing. By studying the practices of 110 marketers, we found that adoption and effectiveness of the Web can be positively influenced if a company 1) provides formal training to its marketing organization, 2) encourages an effective relationship between the marketing and IS/MIS organization, 3) demonstrates the usefulness of the Web to the marketing organization, and 4) uses younger marketing personnel.     

现阶段影响服装出口问题分析

中国是世界公认的服装出口大国,服装出口贸易在我国对外贸易中占有极重要的地位。随着世界经济的不断发展,许多因素影响了服装的出口,文章从品牌、质量、反倾销、环保等方面进行分析。     

提高员工满意度是提高用户满意度的前提

论述了通过提高员工综合素质,提高员工工作的主动性与创造性,进而提高用户满意度的必要性,并从加强员工培训与提高员工满意度两方面论述了如何提高员工综合素质,着重从提高员工满意度方面进行了系统阐述。在如何提高员工满意度方面,又从6个方面进行了详细论述。     

The Impact of Homeowners' Housing Wealth Misestimation on Consumption and Saving Decisions

Using a unique data set of 81,943 house value estimates by the homeowners and their financial institution, I find that homeowners overestimate their house value by 3.1%. After controlling for homeowners' socioeconomic characteristics, I find that ex ante homeowners who rate (cash-out) refinance an existing loan to increase savings (consumption) are significantly more likely to underestimate (overestimate) their house value. Moreover, overestimators (underestimators) are more likely to increase (reduce) their spending ex post . Finally, I also find that underestimators are more likely to prepay their loans and overestimators are more likely to default on their loans.     

The Impact of Employee Stock Option Adoption and Incidence on Productivity: Evidence from U.S. Panel Data

This paper examines the productivity effect of broad‐based and executive stock option programs in adoption year and five subsequent years. The findings include a positive impact on productivity, which is maintained over a five‐year period after adoption for executive plans but diminishes immediately for broad‐based plans. We interpret these findings as evidence of stock option usage being of benefit to organizations. However, to sustain the impact of broad‐based plans options, grants may need to be made with the same frequency as executive option grants.     

城市群发展状态的测度研究——以京津冀城市群为例

城市群研究是目前区域经济学研究的热点领域。但因我国城市发展及其相关研究较晚,目前大多数研究还处于概念界定、规律探索等理论研究阶段。本文首先对城市群发展阶段及其特征进行了划分,然后根据系统论的观点给出了理想状态下城市群发展状态的测度原则,以及现实状态下我国城市群的测度方法,并对京津冀城市群进行了实证研究。得出目前京津冀城市群处于发展阶段的组接阶段。     

影响缸套—活塞环配磨性的几个敏感因素

在文献[4]的基础上进一步分析了影响缸套—活塞环的材料配磨性的几个敏感因素,研究了在变化条件下典型配副的摩擦学行为,提出了旨在提高材料配磨性的相应措施。     

石油企业安全文化影响因素系统分析

石油企业的安全文化管理和建设关系到石油企业的长治久安,综合专家意见得到石油企业安全文化影响因素27个,通过问卷设计、抽样调查和统计分析,筛选出影响较大的因素12个。借助于ISM解释结构模型,厘清了影响石油企业安全文化的表层因素、中层因素和深层因素。以此为结论为石油企业的安全文化建设提供了参考意见和建议。     

宏观经济因素对国债收益的影响分析

利用主成分分析方法将影响国债的宏观经济指标分成宏观调控综合指标和通货膨胀综合指标,选取国债从2004年到2010年的收益率数据,构建多元统计回归模型,研究宏观经济因素对国债收益的影响。研究发现,国债收益率与通货膨胀影响综合指标正相关,受通货膨胀影响较显著。     

药芯焊丝自保护焊及其质量影响因素与控制

根据我国长输压力管道建设的发展历程及国家经济及石油石化工业的发展,介绍了自动化程度高,焊接质量好,焊材利用充分,设备综合成本低的药芯焊丝自保护下向焊技术,并指明该技术主要应用于重型机械、电力设备、石油化工、交通运输、建筑工程、航天航空等行业,尤其是大口径长输压力管道的焊接。比较了药芯焊丝自保护焊、手工下向焊及CO2气保护下向焊的工程适应性,重点分析了自保护焊工艺规范及操作技能对工程焊接质量的影响。介绍了焊前准备、组对、设备计量及工序控制对焊接质量的影响。     

Factors Influencing the Value of Urban Land: Evidence from Halifax-Dartmouth, Canada

This study is a hedonic analysis of land values for Halifax-Dartmouth, Canada. The study has demonstrated that conventional, well-known urban explanatory variables such as zoning, lot size, centrality, neighborhood, and so on, found to determine values in the United States also work for a typical Canadian land market. The findings on effects of lot shape, and high traffic (in combination with other than single-family residential zones) is particularly interesting.     

影响井控质量的因素分析及应对措施

石油行业的高危性，决定了井控工作的重要性。近年来石油企业尽管在防井喷污染事故方面做了大量工作，投入了大量人力物力，采取了强有力的防范措施，但井喷事故仍时有发生。结合现场违章实例，分析了制约提高井控质量的影响因素，探讨了如何抓好井控质量管理，确保行业安全生产。指出，井控是一项系统工程，要树立“积极井控”的理念。     

我国城镇居民房地产财富对消费的影响分析

我国城镇居民资产积累已达到一定规模,其对居民的经济生活已然产生重要的影响。本文借助协整分析工具,结合中国的现实制度和宏观政策,通过建立关于消费的误差修正模型(VEC),运用最新季度数据实现了我国城镇居民房地产财富效应的检验。结果表明,长期内我国土地交易价格指数对消费的财富效应为正,房屋销售价格波动与消费变动负相关,而房屋销售价格与产权制度变迁的联合作用与居民消费正相关。长期以来,中国房地产市场的持续升温对家庭消费起到一定的刺激作用,其作用机制主要依赖于产权制度的不断完善。     

中国经济增长稳定性评价及其影响因素分析

经济增长稳定性对经济增长的质量和国民福利水平有重要影响。本文在评估改革开放以来我国经济增长稳定性的基础上,定量分析了各因素对经济增长稳定性的影响程度。分析结果表明,经济增长稳定性主要受产出缺口、需求结构、产业结构和投资者所有制结构等四大因素的影响,当产出缺口增加1％时,经济增长稳定指数降低0畅97个点;当需求结构（最终消费率）提高1％时,经济增长稳定指数上升0畅79个点;当产业结构提高1％时,经济增长稳定指数上升1畅47个点;当所有制结构（国有经济占比）上升1％,经济增长稳定指数降低0畅62个点。