A New Approach to Calibration and Use of Mechanistic-Empirical Design Methods

2021 ◽  
pp. 103-109
Author(s):  
Rongzong Wu ◽  
John T. Harvey ◽  
Jeremy Lea
Author(s):  
B. Raphael ◽  
B. Kumar

AbstractThis paper discusses the issues related to retrieval of cases in a case-based design system. The limitations of the conventional approaches are brought out, and this is followed by a description of a new approach to indexing and retrieval. This approach aims at capturing control knowledge required for retrieval from individual retrieval examples. Since this approach is based on past retrieval examples, we call it RBEX (Retrieval Based on EXamples). The proposed approach is implemented in a prototype system called CADREM. CADREM uses design methods used in solving past design problems to solve new problems. This is closer to the derivational analogy approach rather than the more common transformational analogy. CADREM has been tried in the domain of conceptual structural design of buildings. Sample outputs from CADREM are also included.


Author(s):  
Birgitta Cappelen ◽  
Anders-Petter Andersson

Technology has potential for improving the lives of persons with severe disabilities. But it’s a challenge to create technology that improves lives from a person’s own perspective. Co-design methods have therefore been used in the design of Assistive Technology, to include users in the design process. But it’s a challenge to ensure the quality of participation with persons with significantly different prerequisites for communication than ourselves. It’s hard to know if what we design is good for them in the way they themselves define it, in a communication situation, which has to be significantly different than traditional co-design. In this paper, we present a new approach to co-design with persons with severe disabilities. We call this process “trans-create”, based on the creative translation we use when translating between cultures. We found that by using familiar artifacts that could be added and removed in the co-design process, we had a language for communication. By adding a personalisable digital layer to the artifacts, we could adapt, scale and redesign both tangible, visual and sound qualities in the situation dynamically. For example, by making it possible for the user to choose and activate a pink music cover card (RFID) that turns the lighting of the entire room pink and changes the music. This implies changing the distinction between designer and user, between the design process and the use process, and the view of what we create during a co-design process. That is why we have chosen to call this process “trans-create”, instead of co-create, what we create for “living works”, instead of design, a hybridisation between design and use, process and result.


Author(s):  
S.J. Selcon ◽  
A.D. Andre ◽  
S.J. Banbury ◽  
C.S. Jordan ◽  
M. Tlauka ◽  
...  

Although the design of the interface in aircraft cockpits has long been recognised as an area requiring the application of Human Factors knowledge, relatively little progress has been made in the development of formal methods to support such a design process. The design cycle has tended to be based around the iterative prototyping and testing of candidate solutions, rather than the application of a priori design rules. Such an approach is sub-optimal since it relies on the utility of the initial candidate designs being correct. The approach can be likened to chamfering the corners of a square wheel, rather than specifying in advance that wheels should be round. It is also a relatively expensive and time consuming method of design since for each new display the whole process needs to be repeated, with little transfer from previous displays. This symposium presents an alternative approach to interface design through the generation of a priori design rules that will specify the cognitive compatibility (i.e. the compatibility of display representations and organisations with the inherent cognitive abilities and skills of the user) of display solutions. The papers in the symposium will describe a number of studies where the results were used to generate empirical design rules relevant to aviation displays. The viability and utility of integrating such rules into a tool to support the design of aircraft interfaces will be discussed.


Author(s):  
Dr. Mohammed Shallal ◽  
Elsir Suliman Ahmed

In this paper a comparative study has been carried out between the Mechanistic-Empirical Pavement Design Methods and the Empirical Pavement Design Methods. For the purpose of this paper, nine pavement design sections have been prepared using the Mechanistic-Empirical Methods represented by the Asphalt Institute Design Method (SW-1 software of the Asphalt Institute) and the Empirical Design represented by AASHTO 1993 and TRL Road Note No.31, using the same traffic loading and subgrade strength. Three traffic loading scenarios have been considered for this study. (Key words: Mechanistic-Empirical, Empirical, axle loads, Subgrade Strength, pavement design)


1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.


Author(s):  
V. Mizuhira ◽  
Y. Futaesaku

Previously we reported that tannic acid is a very effective fixative for proteins including polypeptides. Especially, in the cross section of microtubules, thirteen submits in A-tubule and eleven in B-tubule could be observed very clearly. An elastic fiber could be demonstrated very clearly, as an electron opaque, homogeneous fiber. However, tannic acid did not penetrate into the deep portion of the tissue-block. So we tried Catechin. This shows almost the same chemical natures as that of proteins, as tannic acid. Moreover, we thought that catechin should have two active-reaction sites, one is phenol,and the other is catechole. Catechole site should react with osmium, to make Os- black. Phenol-site should react with peroxidase existing perhydroxide.


Author(s):  
K. Chien ◽  
R. Van de Velde ◽  
I.P. Shintaku ◽  
A.F. Sassoon

Immunoelectron microscopy of neoplastic lymphoma cells is valuable for precise localization of surface antigens and identification of cell types. We have developed a new approach in which the immunohistochemical staining can be evaluated prior to embedding for EM and desired area subsequently selected for ultrathin sectioning.A freshly prepared lymphoma cell suspension is spun onto polylysine hydrobromide- coated glass slides by cytocentrifugation and immediately fixed without air drying in polylysine paraformaldehyde (PLP) fixative. After rinsing in PBS, slides are stained by a 3-step immunoperoxidase method. Cell monolayer is then fixed in buffered 3% glutaraldehyde prior to DAB reaction. After the DAB reaction step, wet monolayers can be examined under LM for presence of brown reaction product and selected monolayers then processed by routine methods for EM and embedded with the Chien Re-embedding Mold. After the polymerization, the epoxy blocks are easily separated from the glass slides by heatingon a 100°C hot plate for 20 seconds.


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