Associative and dissociative comparative advertising strategies in broadening brand positioning

When marketplace dynamics prompt a familiar brand to change its positioning, consumers often meet such attempts with resistance. This research demonstrates how familiar brands can incorporate new attribute information into the brand's position via comparative advertising in order to broaden the brand's marketplace positioning. Study 1 shows how the use and nature of comparative advertising affects the ability of a familiar brand to broaden its positioning. Studies 2a and 2b demonstrate that a comparative advertising strategy that incorporates a specific sequencing of dissociative and associative comparative advertisements best broadens brand positioning.     

弹性材料3J21微槽的微细电解加工研究

为解决高硬度、高强度弹性材料3J21微结构的成形加工难题,在分析进给速度、微细电极、加工电压、电解液浓度等工艺参数对弹性材料3J21加工精度的影响规律基础上,进行了微槽的微细电解铣削加工工艺实验,加工出了宽度约为40μm的微槽,具有较好的加工质量。     

靶场测控装备状态及故障预测方法

靶场测控装备的管控与状态预测对于确保靶场试验任务的顺利开展有着重要的意义,也是状态/故障处理研究领域的发展方向。结合装备结构关系网络,通过对状态信号的分析,给出了靶场测控设备单元的状态预测方法。依据电子元器件寿命规律,结合状态异常出现的分布函数,重点构建了离散型状态变量的预测模型,提出了相应的预测流程和方法。仿真计算表明,提出的状态及故障预测模型和方法有效,可为提高任务期间装备的可靠性提供判断依据。     

基于“藏粮于技”的粮食生产实施策略

粮食安全关乎民生和国家安全,"藏粮于地,藏粮于技"是维护我国粮食安全的基本战略。其中"藏粮于技"必须通过科技创新解决当前农业生产中的难题,提高粮食生产领域的科技贡献率。同时,必须前瞻性地加速数字农业建设、精准农业实践和智慧农业探索,奠定我国粮食生产领域生态智慧农业的基础。     

Is Site-Specific Yield Response Consistent over Time? Does It Pay?

This study examines the profitability and stability of site-specific (SS) nitrogen fertilizer recommendations using an empirical model of SS yield response to controlled inputs, stable site characteristics, and time-varying weather factors. Using a three-year panel of on-farm corn yield experiments and new, continuous variables to describe site characteristics, both spatial and ordinary least squares regression models show clear evidence of SS corn yield response to nitrogen fertilizer. Yield response is predictable only on irrigated fields. Even there, bootstrapped confidence intervals for profitability gains on selected fields indicate that SS nitrogen application would rarely cover its costs.     

Minitab在分析发电负荷控制精度中的应用

针对发电负荷控制精度在生产中存在的问题,应用Minitab工具对发电负荷控制精度的影响因素进行分析,找出关键因素并加以改进。实践证明,实施效果显著。     

房屋建筑面积测算若干问题探讨

在深入学习领会国家标准《房产测量规范》内容及条文含义的基础上,文章对房屋建筑面积测算若干问题进行了探讨,重点探讨房屋建筑面积范围的计算及房屋产权面积测算。     

利用GPS布设水利隧洞工程控制网及精度分析

GPS定位技术以其高精度、全天候作业、操作简单、观测时间短等诸多优点而广泛应用于各种测量控制网的布设。文章从不同版本规范对GPS控制网有不同要求的角度探析GPS控制网的布设原则,并在实例工程中分析其精度。     

大体积混凝土基础中高精度预埋件的施工控制方法

某抗震实验室振动台基础为大体积混凝土,其预埋件的定位精度要求很高。为了满足后续工作要求,有针对性的采取了混凝土收缩变形控制措施,对原设计的预埋件钢支架做了优化,提出了可对预埋件进行三维微调的新施工方案。结果表明,新方案的实际施工控制效果很好,预埋件的安装精度达到了预定精度要求。