Requirement definition architecture—an overview

Bravoco, Ralph R.; Yadav, Surya B.

doi:10.1016/0166-3615(85)90046-6

Cited by 49 publications

(14 citation statements)

References 2 publications

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“…There are many more graphical methods of task modeling (surveyed in Luczak, 1997), but because most of them are rather semiformal methods, it is difficult to transform the graphical models into simulation models. The evaluated methods include: Activity Diagrams of the Unified Modeling Language (Booch, Rumbaugh, & Jacobson, 1998), Event-driven Process Chains (EPCs; Scheer, 1999), the IDEFfamily (Bravocco & Yadav, 1985;Mayer et al, 1992;Ross, 1985), and Colored Petri Nets (CPNs; Jensen, 1997).…”

Section: Methods Of Task Network Modelingmentioning

confidence: 99%

A comparative simulation study of work processes in autonomous production cells

Schlick

Reuth

Luczak

2001

Hum Ftrs & Erg Mfg Svc

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An approach to human-centered design and assessment of work processes in flexible manufacturing systems with the help of dynamic task networks is presented. To model and simulate the task networks, the method of timed colored Petri Nets is used. Two task networks are developed. The first task network is a model of work processes in Autonomous Production Cells (APCs). The second task network represents work processes in conventional Computer Numerically Controlled (CNC)-based manufacturing systems. The material processing technology is associated with 5-axis milling. The values of attributes of task elements were acquired empirically on a fine-grained level with reference to a sample milling order. Comparative hypotheses regarding time-on-task, supervisory control functions, levels of cognitive control, human error (HE), and labor division were then formulated. To test these hypotheses, several simulation experiments were conducted. The results from inferential statistics show that single-operator APCs have a 30% higher efficiency in relation to total time-on-task. Moreover, the level of cognitive control is significantly shifted toward rule-and knowledge-based behavior. Surprisingly, the simulation of minor HE does not demonstrate a significantly worse performance from APCs. A simulated labor division among central process planner and production operator allows an additional efficiency improvement of approximately 15%. However, the labor division has two important drawbacks: first, a sequential incompleteness of operators' task spectrum occurs; second, the operator has to cope with hierarchical task incompleteness. Finally, a sensitivity analysis was carried out to investigate the effects of varying lot sizes and number of processed orders.

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Section: Methods Of Task Network Modelingmentioning

confidence: 99%

A comparative simulation study of work processes in autonomous production cells

Schlick

Reuth

Luczak

2001

Hum Ftrs & Erg Mfg Svc

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“…As illustrated in Fig. 5, the generation of many levels of detail through the model dia- (Bravoco and Yadav 1985).…”

Section: Idef0 Function Modelmentioning

confidence: 99%

An integrated modeling method for assessment of quality systems applied to aerospace manufacturing supply chains

Harun

Cheng

2010

J Intell Manuf

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In highly regulated industries such as aerospace, the introduction of new quality standard can provide the framework for developing and formulating innovative novel business models which become the foundation to build a competitive, customer-centric enterprise. A number of enterprise modeling methods have been developed in recent years mainly to offer support for enterprise design and help specify systems requirements and solutions. However, those methods are inefficient in providing sufficient support for quality systems links and assessment. The implementation parts of the processes linked to the standards remain unclear and ambiguous for the practitioners as a result of new standards introduction. This paper proposed to integrate new revision of AS/EN9100 aerospace quality elements through systematic integration approach which can help the enterprises in business re-engineering process. The assessment capability model is also presented to identify impacts on the existing system as a result of introducing new standards.

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“…In this figure, each activity represented by a solid box uses several different models, transforming and refining them from activity to activity. The box is given an ICOM (Input, control, output and mechanism) representation adopted from the functional model of IDEF [5,6]. Note that IDEF is a standard modelling tool widely used in manufacturing industry.…”

Section: A System Analysis Approachmentioning

confidence: 99%

Agent Design for LCC Information Gathering

Zhang¹,

Jiang²,

Kendall

2001

Global Engineering, Manufacturing and Enterprise Networks

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To respond to the challenge of global economic competition, manufacturers are searching for ways to bring high-quality products, system, and structures into being in response to established needs. Simultaneously, as cost is a key factor among many physical and social factors to determine the success of a product, they attempt to reduce costs during every phase of the product's life cycle. The major obstacle for LCC models is data gathering from a highly distributed heterogeneous environment with a huge number of information sources. This paper presents a system analysis approach to design agents for information gathering for CAS A model that is one of popular LCC models.

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Requirement definition architecture—an overview

Cited by 49 publications

References 2 publications

A comparative simulation study of work processes in autonomous production cells

A comparative simulation study of work processes in autonomous production cells

An integrated modeling method for assessment of quality systems applied to aerospace manufacturing supply chains

Agent Design for LCC Information Gathering

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