An Analysis of Scheduling Policies In Multiechelon Production Systems

Results of a simulation study of the economics of frequency of rescheduling Material Requirements Planning (MRP) systems are presented for a single-product, two-stage system in which demand is uncertain. The results indicate that for systems with moderate demand uncertainty, frequent rescheduling to maintain customer service may be uneconomical when compared with the alternative of more stable schedules in conjunction with safety stock. This result arises primarily because the cost of “emergency” production setups which occur when rescheduling is frequent exceeds the cost of safety stock required to “protect” stable schedules.     

A System for Measurement of Isokinetic Strength for Estimation of Load Handling Capacity

This note describes a method for measurement of isokinetic strength for prediction of manual materials handling capacity of individuals. The apparatus used in this methodology and measurement technique are illustrated in detail.     

An AR based fast mode decision for H.265/HEVC intra coding

As a critical technique to raise coding efficiency in H.265/HEVC (H.265/High Efficiency Video Coding), the number of prediction modes for intra coding is much larger than that in H.264/AVC. However, the large number of prediction modes also leads to high complexity. In this paper, an AR (Auto Regression) based fast mode decision method for H.265/HEVC intra coding is proposed, including an AR based fast mode selection and an MPM (Most Probable Mode) joint fast mode selection method. Considering the correlation between SATD (Sum of Absolute Transformed Differences) cost and RD (Rate-Distortion) cost, we establish a selective function controlled by an adaptive parameter which is acquired by an AR model. According to the distribution of the SATD cost, the selective function can decide which modes can be discarded and which modes can be used for the FMD (Fine Mode Decision). In addition, in order to further reduce the number of candidate modes for FMD, an MPM joint fast mode selection method is presented based on the relationship between MPMs and candidate modes. Experimental results show that just in PU layer, the proposed AR based fast intra mode decision method can save encoding time by 32 % with negligible coding loss in all-intra main configuration compared to the intra mode decision of HM13.0.     

Old-age Care Modes and Facility Planning Based on the Concept of “Continuum of Care”

Through the comparative analysis on the theories and practical experience of the development of old-age care (OAC) in both China and other countries,and based on the interview and questionnaire survey in Zhejiang Province and Hangzhou City,this paper proposes the research and analysis framework for the old-age service system,i.e.,"OAC mode-OAC service system-OAC facility system." The paper argues that,oriented by OAC mode of "taking community-and home-based care as the main body and institution-based care as supplement," China should build an OAC facility system and planning thoughts that take "continuum of care" as concept and long-term care system as core.Taking Zhejiang Province and Hangzhou City as examples,the paper conducts the optimization research on current OAC facilities planning in terms of hierarchical system,scale,and differentiation,so as to formulate more systematic and operable planning standards for OAC facilities.     

元上都遗址工作站

元上都遗址工作站位于遗址之南,解决了遗址景区售票、警卫监控、管理办公、休息及游客公共卫生间等功能需求,并配合元上都遗址申报世界文化遗产基地选址于景区现状入口处,将题有"元上都遗址"的原有门楣和刻有元上都遗址地图的石碑设置于正对遗址轴线的延长线上,而将新建的建筑、原有的"忽必烈"雕塑和电瓶车停车场等偏于轴线东侧布置,以留出面向遗址的景观视线通廊.     

On a class of signals and matrices giving very fast algorithms for linear problems

In this paper is presented a class of stochastic signals and of correlation matrices introducing very fast algorithms for solving linear problems. These signals are derived from white noise by using three kinds of operations combined in various orders: summation, difference and instantaneous modulation. The discrete time Brownian motion is a particular example of such signals.     

Soft eigenvalue assignment with limited disturbance feedforward and state controller norm

The method of softly assigning eigenvalues is attractive for design problems where constraining the control effort and disturbance feedforward is more important than following the exact pole location.     

A Hybrid Algorithm for Solving Polynomial Zero-One Mathematical Programming Problems

This paper presents an algorithm for solving large-scale polynomial (nonlinear) zero-one programming problems. The procedure incorporates a mixture of pseudo-Boolean concepts and time-proven implicit enumeration procedures. Significant savings in the time required to obtain optimal solutions results from the use of a minimum cover to analyze the future effect of a particular implicit enumeration iteration. Additional improvement is obtained through the use of a term ranking strategy to control the arborization of the implicit enumeration process. Computational experience demonstrates that this algorithm can reduce the magnitude of the computer solution time for large problems from several minutes to a matter of a few seconds.     

Taguchi-based Methodology for Determining/Optimizing Robot Process Capability

Taguchi-based methodology is implemented to determine and to optimize a robot's process capability (RPC). This low-cost solution optimizes a robot's operational conditions. The experiment determines the RPC (i.e., accuracy, repeatability, reproducibility and stability) and considers seven operational factors (i.e., load, speed, distance, orientation, direction, height, and starting point) with three levels each. The results from Taguchi experimental design and data analysis show that the various factors affect each RPC characteristic differently. Therefore, an optimized combination of operational factors for each RPC characteristic is determined separately. Based on the project results, recommendations are made to use Taguchi Methods. Test results and future research needs are also discussed