this paper focuses on data modeling for traceability in information layer of manufacturing control system. The model is able to trace all associated data throughout the product manufacturing from order to final product. Applicability of designed data-model is enhanced with traceability of associated quality data for the system dynamically. The modeling consisted of four steps, mapped successfully and integrated in one final framework. Techniques and procedures of the modeling are explained along with business relationships. Data model expression based on EntityRelationships modeling is proposed. The developed model promises to handle fundamental issues of a traceability system effectively. It supports for customization and real-time control of material in flow in all quality and production operation processes. Recording deviations and assessing their impact become easier. Through enhanced visibility and dynamic store/retrieval of data, all traceability usages and applications is responded. Designed solution is initially applicable in identical lot-base traceability of material in flow cases as a reference data model.

This paper addressed a data modelling and functionality evaluation of traceability system requirements and its implementation for small-to medium-sized enterprises (SMEs). The major idea is to convert the data structure and system behaviour arising from traceability requirement into modelling using data modelling techniques in a user-friendly and economical way. Then, based on a case study the paper expounds the methodology by implementing the model to a computerised traceability information system. The system can manipulate operation data as well as quality data dynamically to keep the traceability information up to date and useful. The solution responds to all traceability requirements of integrity, data collecting, linking, and guarantees different types of lists and reports in the support of quick decision making with minimal human efforts.

This paper focuses on design of high-performance MEMS LC-tank circuit for use in CMOS voltage controlled oscillators (VCO) operating at 2.4 GHz. The high-Q air suspended inductor has been designed by inductance of 2.87 nH using MEMS technology to reduce the resistive loss and the substrate loss. A MEMS two-gap tunable capacitor has been designed. The DC voltage is 2.5 V which is applied to the plates and the results of 2.04 pF could be achieved. The pull-in voltage has been optimized to achieve low phase noise, low power consumption VCO. Through this optimization, less phase noise (−117.7 dBc/Hz at 100 KHz) and lower power consumption (11 mW) have been obtained.

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