A simple method to obtain minimum aberration split-plot designs

ABSTRACT

Split-plot designs have been utilized in factorial experiments with some factors applied to larger units and others to smaller units. Such designs with low aberration are preferred when the experimental size and the number of factors considered in both whole plot and subplot are determined. The minimum aberration split-plot designs can be obtained using either computer algorithms or the exhausted search. In this article, we propose a simple, easy-to-operate approach by using two ordered sequences of columns from two orthogonal arrays in obtaining minimum aberration split-plot designs for experiments of sizes 16 and 32.     

SoC软硬件协同技术的FPGA芯片测试新方法

针对传统的基于纯硬件平台的FPGA芯片测试方法所存在的种种问题,提出并验证了一种基于软硬件协同技术的FPGA芯片测试方法。该方法引入了软件的灵活性与可观测性等软件技术优势,具有存储深度大、可测I/O管脚数目多、自动完成配置下载(不需人工干预)和自动定位FPGA中的错误等优点,提高了FPGA的测试速度和可靠性,并降低了测试成本,与传统的自动测试仪(ATE)相比有较高的性价比。采用软硬件协同方式针对Xilinx4010的I/O单元进行了测试,实现了对FPGA芯片的自动反复配置、测试和错误定位。     

高精度局域定向定位技术及其精度分析

针对目前自主局域定向定位的需求,文中提出了一种在近场模型下反向利用阵列信号处理相关理论实现阵列自身的高精度定向定位方法,仿真实验表明该方法可以有效实现阵列的高精度定向定位.进一步对该方法的定向定位精度进行了理论分析,通过仿真分析了阵列所处位置、信号源数目、阵列自身天线阵元数目以及信号源位置存在误差时对定向定位精度的影响,相关实验结论具有重要的工程应用指导意义.     

国际收支平衡调控分析

针对中国国际收支不平衡问题,采用对比分析的方法,分析了国际收支存在服务、收益项目发展滞后,净误差与遗漏账户逆差,外汇储备过大等问题,提出处理好货物出口与服务出口,汇率贬值与升值,储备增长与防范风险,加强收支统计与打击逃汇、骗汇关系等解决策略。研究结论对调控国际收支有指导意义。     

疑问代词“怎么”的否定用法考察

疑问代词除了表示询问、任指和虚指外,还有一个重要的用法,即用在反问句中表示否定。文章以＂怎么＂为例,根据其出现的语言环境,分类考察了＂怎么＋AD＋VP＂用于表示否定出现的句法环境、语义以及功能,并从反问句的句法机制和主观性因素的角度分析了其表示否定意义的原因。     

Taguchi methods: linear graphs of high resolution

An important reason behind the success of the Taguchi methodology in qual- ity assurance has been the use of statistical methods, presented in a way that is accessible to the nonexpert user. Among the tools used to simplify the sta- tistical design of experiments has been the linear graph, apparently introduced by Taguchi. However, he did not consider the resolution of the corresponding designs (the higher the resolution, the more accurate the conclusions). For example, it will be shown that half of the linear graphs given by Taguchi for the L₁₆(2¹⁵) orthogonal array correspond to designs of resolution III, when designs of resolution IV are available (with the same lines in the linear graphs but with different assignments to the columns of the orthogonal array). A nontraditional but very straightforward method is presented for obtaining the alias chains and the linear graphs corresponding to an orthogonal array. The procedure can be easily understood and employed by nonstatisticians to find an experimental design of the highest possible resolution. The design can be used to obtain products or processes that are robust to variation.     

Applying stage-gate processes to technology development—Experience from six hardware-oriented companies

The stage gate model has been proposed for application to uncertain technology development. Reports on industrial experience from such implementations are quite limited, however. This led us to explore in six companies what adaptations have been made to facilitate the model's usefulness for technology development and the companies’ experiences from their practical application of the model. Our results indicate that aspects proven important for the operational success, or failure, of the model include the level of adaptation to the characteristics of technology development and a more flexible use than that normally found in product development.     

“按说”的话语标记性及语篇功能

按说是一个话语标记,它通常关联三个语篇单位:A.陈述某个事实依据;B.依照常理推导出一个结论命题;C.陈述与此命题相反的另一事实。按说具有表示推测的传信功能,可靠性等级居中。在语篇中,有衔接AB和BC的功能,常常能起到承上启下的作用。     

院校研究开展外部管理咨询的探讨

目前中国院校研究正从“对象化”走向“实践化”，为数不多的院校研究实践都是一种内部管理咨询活动，是典型的自我研究。为了推进院校研究在中国取得新突破，院校研究在做好内部管理咨询的同时，也要尝试积极开展外部管理咨询，为外校提供专业水平的咨询服务。     

释甲骨金文中的“宜”字

甲骨金文中的“ ”应该释为“宜”，本义是陈肉之器。这种意义的“宜”用作动词，意思是把祭牲陈设到肉案上献给神灵，或把肉置放到肉案上献给尊贵的人。由动词的意义又引申有适宜、合适之义。它还有地名或国名、人名等用法。