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Product Acceptance Determination Based on EWMA Yield Index Using Repetitive and MDS Sampling Schemes
This study presents a repetitive group sampling plan and a multiple dependent
state sampling plan based on the EWMA (exponentially weighted moving average) yield
index for product acceptance. The proposed plans utilize the current and previous
information through EWMA statistic to reach a decision of lot sentencing. A non-linear
optimization model is developed to determine the plan parameters of the proposed plans for
various specied conditions. The performance of the proposed plans over several existing
sampling plans is analyzed, showing that the proposed plans are ecient in reducing
the sample size for lot sentencing. For industrial application, a real example is given
to demonstrate the implementation of the proposed plans.補正完畢TW
Recent PRC Military OperationsOrganizational 、Geostrategy、PLAN
The National Public Honors college St. Mary's College of Maryland補正完畢國際Maryland ;AmericaUS
Crystalline Water Structure in Room-Temperature Clathrate State: Hydrogen-Bonded Pentagonal Rings
Water hydrogen bonding is extremely versatile; ≈20 ice structures and several types of clathrate hydrate structures are identified. These crystalline water structures form at temperatures below room temperature and/or at high pressure. Transmission electron microscopy is used to study a new crystalline water structure in a clathrate state that is prepared by sandwiching gas-supersaturated water between graphene layers under ambient conditions. In this clathrate state, water molecules form a 3D hydrogen-bonding network that encloses gas-filled cages 2–4 nm in size. Herein, the crystalline water structure is derived by recording and analyzing electron diffraction patterns and performing first-principles calculations. The structure consists purely of pentagonal rings and has a topology similar to that of water ice XVII. In the study, a mechanism for the formation of the clathrate state is proposed. The results improve the understanding of interactions among water and small nonpolar molecules and offer insights into the local structures of ambient liquid water.補正完畢US
航空複合材料層板嵌補式修補與智慧結構包埋微帶天線之材料試驗研究
本研究延續先前航空複合材料層板嵌補式修補模擬分析之研究,製作橢圓嵌補式修補層板並且進行超音波檢測,再進行三點彎曲試驗檢測其最大變形量與能承受最大負載。本研究橢圓嵌補式修補層板最大變形量為18.71 mm,承受最大負載為133 kgw。本研究改良修正先前智慧結構包埋微帶天線設計與缺漏考量邊緣效應(Fringing Effect)的問題,並利用複合材料將其包埋製作成智慧結構,在完成電磁模擬與分析之後,利用超音波檢測和三點彎曲試驗檢測其智慧結構的機械性質,發現本研究智慧結構承受最大變形量為18.71 mm,承受最大負載為187 kgw。中華民國航空太空學會補正完畢國內台南市,台灣TW