6.3 Suspended Ceiling Design Process - Bilkent University

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Entity-relationship diagrams are beneficial for producing integrated product and process models, however, the method is more desirable for top-down design process, since it allows high level abstraction in representing design information and design activities (Hong and Hong, 2001). Svensson et al. (1999) explain that if the process modeled is a repetitive task, ER modeling can be useful, since only the type of information is relevant, regardless of what types of parts the documents are describing. 3.2.3 Unified Modeling Language Unified Modeling Language (UML) is a standard modeling language for software development. It is a sophisticated language involving many types of diagrams; two of which are especially relevant for process modeling purposes. UML activity diagrams enable identification of communication between activities undertaken by different roles within a process. Activity diagrams address the dynamic view of a system. Use case diagrams show a set of use cases and actors and their relationships. Such diagrams address the static use case view of a system (Booch et. al., 1998). Use case diagrams of UML were recently used in OSMOS (a European Union research project) to capture the sequence of actions performed by actors in virtual construction enterprises (Rezgui et al., 2002). 37
Figure 3.7: A Generic UML Activity Diagram (Booch et al., 1998) The limitations of modeling processes with UML are as follows. First, UML is not suitable for process modeling if the purpose is to study the current state of the processes. Moreover, UML does not include any suitable technique for mid-level process modeling such as IDEF0. Therefore, it is hard to get an overview of the modeled system. Information modeling tools like ER diagrams and UML are capable of representing dependency relationships, but they do not provide a means for analyzing the cycles in a process. Thus, their functionality as a process modeling method lies largely in IT system development rather than process integration and improvement. 3.2.4 Activity-based DSM Activity-based DSM is a method capable of identifying and resolving iterations in a process. The details of the method and applications are discussed in the next chapter. However, a brief analysis of its 38
Page 1 and 2: REPRESENTING INFORMATION FLOW IN BU
Page 3 and 4: ABSTRACT REPRESENTING INFORMATION F
Page 5 and 6: ACKNOWLEDGEMENTS Foremost, I would
Page 7 and 8: 2.2.3.4 Types of Information Models
Page 9 and 10: 5.3.3.1 Classification According to
Page 11 and 12: 8.3 Suggestions for Further Researc
Page 13 and 14: LIST OF FIGURES Figure 1.1: A Gener
Page 15 and 16: Figure 6.13: Initial Parameter-base
Page 17 and 18: in many building projects. This is
Page 19 and 20: process modeling method for buildin
Page 21 and 22: educational approaches, studies of
Page 23 and 24: 2. COLLABORATIVE DESIGN RESEARCH IN
Page 25 and 26: graphical interface to the Internet
Page 27 and 28: member are not agreed to by other m
Page 29 and 30: There is also considerable interest
Page 31 and 32: models are interdependent and they
Page 33 and 34: 5. Incomplete, uncertain, and untim
Page 35 and 36: 2.2.3.3 Advantages of the Informati
Page 37 and 38: process development effort is highl
Page 39 and 40: emerge at the early 1970s, moved aw
Page 41 and 42: the GDCPP. From the point of view o
Page 43 and 44: 3.2.1 Network Models Network models
Page 45 and 46: interpreted as resources. The idea
Page 47 and 48: (1999) applied these concepts to a
Page 49 and 50: Input Figure 3.5: A Generic IDEF0 D
Page 51: world with an independent existence
Page 55 and 56: side indicating the scheduled start
Page 57 and 58: 4. DESIGN STRUCTURE MATRIX METHOD T
Page 59 and 60: need to be made. No optimal method
Page 61 and 62: aim is to move the above diagonal m
Page 63 and 64: is built, it can serve as a platfor
Page 65 and 66: 4.2.1 Component-based DSM System en
Page 67 and 68: epresenting them as connections bet
Page 69 and 70: Kusiak, 1996). While the DSM can be
Page 71 and 72: since high-level processes sometime
Page 73 and 74: (a) (b) Figure 4.6: A Parameter-bas
Page 75 and 76: 2. Importance ratings: A scale can
Page 77 and 78: Besides adding extra attributes to
Page 79 and 80: versions of the model a binary info
Page 81 and 82: problem without the framework model
Page 83 and 84: select a task for decomposition and
Page 85 and 86: developed such as interaction chart
Page 87 and 88: contracts. In current practice for
Page 89 and 90: completed. The former is called une
Page 91 and 92: Browning, 1998) found that addition
Page 93 and 94: A parameter-based DSM may provide i
Page 95 and 96: 5.2.2 Process Integration The situa
Page 97 and 98: Figure 5.1: Two Coupled Activities
Page 99 and 100: Although representing parameter val
Page 101 and 102: 5.3.1 Assumptions and Scope of the
Page 103 and 104:
In order to develop the IFC specifi
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object must support a variety of AE
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Figure 5.6: Four different Views of
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countries which have a classificati
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process integration. Therefore, in
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technical terms. Furthermore, some
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the DSM and to denote the performan
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ased DSM. Since such DSMs are low-l
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modeling of information management
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Architect Design Engineers User Int
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Figure 5.12: A Workflow Proposal fo
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study, which analyzes elevator desi
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parameters were defined according t
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plenum, hangers, and wall angles. T
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suspension system. Fittings support
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constraints to the integrated syste
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leaded by a chief engineer. Design
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P8 P8 P8 P8 P8 P8 P8 P8 180 90 180
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Infrastructure design: 2 people At
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6.4.4.1 The Design Configuration Th
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parameter relationships. However, o
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Study Feasibility A1 Select Suspend
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Figure 6.7: An IDEF0 Model of Suspe
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Figure 6.9: An IDEF0 Model of Suspe
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Figure 6.10: An Example System Desc
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Performance Requirements System Lev
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Performance Requirements System Lev
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Thermal Performance Lighting Perfor
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6.5 Results and Discussion 6.5.1 Ob
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plenum. Several different schemes m
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6.5.3 A Comparison between the Asse
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performance requirements drive desi
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finding supports the comments made
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applied by an electric driving mach
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surfaces. One rail is installed on
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Elevator design process begins with
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Having decided the car, hoistway, a
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4. It is assumed that there is no n
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2. Occasionally, different design p
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Figure 7.2: The Context Diagram of
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Figure 7.4: An IDEF0 Model of Eleva
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Figure 7.6: An IDEF0 Model of Detai
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System Level Parameters Analyze Ele
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Building Type Building Style Tenanc
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time, round trip time, and number o
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there are large cycles. This sugges
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such formulas than suspended ceilin
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Furthermore, it was observed in the
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3. In order to deal with large DSMs
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observed in the case studies includ
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while an aircraft or ship may have
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developers can use the method to in
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Baldwin, A. N., Austin, S., Hassan,
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Denker, S., Steward, D. and Brownin
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Karhu, V. (2001). A Model based App
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Problematics. (2003). Problematics
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Suh, N. P. (1998). Axiomatic Design
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January 20, 2003, from http://www.c
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A.1 Classification of Building Part
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• Time (aesthetic service life)
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B.1 Suspended Ceiling Design Parame
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Panel Acoustics NRC: Noise Reductio
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B.2 Elevator Design Parameter Defin
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Floor Area: The areas of the floors
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UpPeak Interval: The interval betwe
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C.1 A Computer Program For Building
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Figure 3. Unpartitioned Matrix The
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'fill in matrix titles For counter
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4. Open the sheet “partitioned DS
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End With For i = 1 To n Cells(i + 2
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End If Next j total_row(i) = k 'ass
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