Manufacturability Evaluation Shell: A Re-Configurable Environment for Technical and Economic Manufacturability Evaluation

2003 ◽  
Author(s):  
Prashanth Varkey Tharakan ◽  
Zuozhi Zhao ◽  
Jami Shah
Keyword(s):  
Domain Knowledge ◽  
Evaluation Method ◽  
New Technology ◽  
Assessment Tools ◽  
Levels Of Abstraction ◽  
2.5D Milling ◽  
Generic Tasks ◽  
Manufacturability Evaluation ◽  
Domain Independent ◽  
Current Systems

The process of manufacturability evaluation is composed of a series of generic tasks. Though domain knowledge is utilized to evaluate manufacturability the evaluation method itself is independent of domain. Manufacturability has different levels of abstraction – process level, workshop level and machine level. Currently existing assessment tools address manufacturability in specific domains and stages. In the emerging markets of increasing competition, streamlining the PRP involves designing with manufacturing capability in mind, and knowledge and application of new technology and processes. This paper proposes a generic domain independent shell for manufacturability that is configurable and customizable to any domain or process. The paper presents the three stages of manufacturability and its relevance to a domain independent approach to manufacturability assessment. The paper presents the problems plaguing current systems and charts out the requirements for a new generic shell that can overcome these shortcomings. The paper then presents the architecture of the shell and presents issues of implementation and two case studies (2.5D milling and injection-molding) as a proof of concept of the functioning of the shell.

Quantifying the Impact of Domain Knowledge and Problem Framing on Sequential Decisions in Engineering Design

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Murtuza Shergadwala ◽  
Ilias Bilionis ◽  
Karthik N. Kannan ◽  
Jitesh H. Panchal
Keyword(s):  
Engineering Design ◽  
Information Acquisition ◽  
Design Problem ◽  
Domain Knowledge ◽  
Optimization Problem ◽  
Domain Specific ◽  
Problem Framing ◽  
Design Solutions ◽  
The Impact ◽  
Domain Independent

Many decisions within engineering systems design are typically made by humans. These decisions significantly affect the design outcomes and the resources used within design processes. While decision theory is increasingly being used from a normative standpoint to develop computational methods for engineering design, there is still a significant gap in our understanding of how humans make decisions within the design process. Particularly, there is lack of knowledge about how an individual's domain knowledge and framing of the design problem affect information acquisition decisions. To address this gap, the objective of this paper is to quantify the impact of a designer's domain knowledge and problem framing on their information acquisition decisions and the corresponding design outcomes. The objective is achieved by (i) developing a descriptive model of information acquisition decisions, based on an optimal one-step look ahead sequential strategy, utilizing expected improvement maximization, and (ii) using the model in conjunction with a controlled behavioral experiment. The domain knowledge of an individual is measured in the experiment using a concept inventory, whereas the problem framing is controlled as a treatment variable in the experiment. A design optimization problem is framed in two different ways: a domain-specific track design problem and a domain-independent function optimization problem (FOP). The results indicate that when the problem is framed as a domain-specific design task, the design solutions are better and individuals have a better state of knowledge about the problem, as compared to the domain-independent task. The design solutions are found to be better when individuals have a higher knowledge of the domain and they follow the modeled strategy closely.

scholarly journals New Global Referencing Approach in a Camera-LCD Micro Positioning System

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2118
Author(s):  
Óscar de Francisco Ortiz ◽  
Irene Ortiz ◽  
Antonio Bueno
Keyword(s):  
Global Positioning System ◽  
New Technology ◽  
Positioning System ◽  
New Approach ◽  
Positioning Systems ◽  
System A ◽  
Quality Product ◽  
Global Positioning ◽  
Accuracy And Repeatability ◽  
Current Systems

In any precision manufacturing process, positioning systems play a very important role in achieving a quality product. As a new approach to current systems, camera-LCD positioning systems are a new technology that can provide substantial improvements enabling better accuracy and repeatability. However, in order to provide stability to the system a global positioning system is required. This paper presents an improvement of a positioning system based on the treatment of images on an LCD in which a new algorithm with absolute reference has been implemented. The method is based on basic geometry and linear algebra applied to computer vision. The algorithm determines the spiral center using an image taken at any point. Consequently, the system constantly knows its position and does not lose its reference. Several modifications of the algorithm are proposed and compared. The simulation and test of the algorithm provide an important improvement in the reliability and stability of the positioning system providing errors of microns for the calculation of the global position used by the algorithm.

MACE: Mobile Artificial Conversational Entity for Adapting Domain Knowledge and Generating Personalized Advice

2019 ◽  
Vol 28 (04) ◽  
pp. 1940005 ◽  
Author(s):  
Christos Troussas ◽  
Akrivi Krouska ◽  
Maria Virvou
Keyword(s):  
Mobile Learning ◽  
Domain Knowledge ◽  
English Language ◽  
Learning Experience ◽  
New Technology ◽  
Language Instruction ◽  
Educational Process ◽  
Learning System ◽  
Handheld Devices ◽  
Design Development

Mobile learning offers, with the help of handheld devices, a continuous access to the learning process. With the advent of mobile learning, educational systems are changing, offering the possibility of distance education without the restrictions of place and time. As such, new technological advancements are employed by mobile learning. This paper presents the design, development and evaluation of a novel artificial conversational entity, incorporated in a mobile learning system for personalized English language instruction. More specifically, it offers amelioration of the domain knowledge model by adapting it to the students’ needs and to the pace that they prefer to receive learning. Moreover, it creates personalized tutoring advice in order to support students in the educational process. Finally, it can assist the procedure of assessments since it automatically generates questions to assess the knowledge level of students. The evaluation of the mobile tutoring system presents promising results regarding the incorporation of this new technology in digital education with the aim of creating a student-centric learning experience.

A domain knowledge graph construction method based on Wikipedia

2020 ◽  
pp. 016555152093251
Author(s):  
Haoze Yu ◽  
Haisheng Li ◽  
Dianhui Mao ◽  
Qiang Cai
Keyword(s):  
Domain Knowledge ◽  
Multiple Scale ◽  
Construction Method ◽  
Knowledge Graph ◽  
Relationship Extraction ◽  
Proposed Model ◽  
Extraction Algorithm ◽  
Structured Knowledge ◽  
Extraction Model ◽  
Domain Independent

In order to achieve real-time updating of the domain knowledge graph and improve the relationship extraction ability in the construction process, a domain knowledge graph construction method is proposed. Based on the structured knowledge in Wikipedia’s classification system, we acquire concepts and instances contained in subject areas. A relationship extraction algorithm based on co-word analysis is intended to extract the classification relationships in semi-structured open labels. A Bi-GRU remote supervised relationship extraction model based on a multiple-scale attention mechanism and an improved cross-entropy loss function is proposed to obtain the non-classification relationships of concepts in unstructured texts. Experiments show that the proposed model performs better than the existing methods. Based on the obtained concepts, instances and relationships, a domain knowledge graph is constructed and the domain-independent nodes and relationships contained in them are removed through a vector variance algorithm. The effectiveness of the proposed method is verified by constructing a food domain knowledge graph based on Wikipedia.

Evaluation of Innovation Effect of Residential Design Based on Fuzzy Comprehensive Evaluation Method

2010 ◽  
Vol 37-38 ◽  
pp. 407-411
Author(s):  
An Ping Pan
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
New Technology ◽  
Residential Building ◽  
Fuzzy Comprehensive Evaluation ◽  
Energy Materials ◽  
Housing Design ◽  
Residential Design ◽  
Development Goals ◽  
Technical And Economic Indicators

The fundamental purpose of housing design innovation is to provide residents with functional, well equipped, comfortable and beautiful living space, to achieve sustainable development goals of saving land, energy, materials. In order to set reasonable targets and standards for evaluation, we adopt a comprehensive fuzzy method to evaluate and compare the program overall performances, on the base of collecting the tenements views on the performance, price, use effect as well as various technical and economic indicators of residential building system of the new technology and new materials of the housing construction, soliciting for the advice of Designers and Construction workers, considering the factors of technical, economic and social, combined with our experience.

scholarly journals Planning as tabled logic programming

2015 ◽  
Vol 15 (4-5) ◽  
pp. 543-558 ◽  
Author(s):  
NENG-FA ZHOU ◽  
ROMAN BARTÁK ◽  
AGOSTINO DOVIER
Keyword(s):  
Symmetry Breaking ◽  
Logic Programming ◽  
Domain Knowledge ◽  
Structured Data ◽  
Significant Progress ◽  
State Data ◽  
Planning Models ◽  
Modeling Techniques ◽  
International Planning ◽  
Domain Independent

AbstractThis paper describes Picat's planner, its implementation, and planning models for several domains used in International Planning Competition (IPC) 2014. Picat's planner is implemented by use of tabling. During search, every state encountered is tabled, and tabled states are used to effectively perform resource-bounded search. In Picat, structured data can be used to avoid enumerating all possible permutations of objects, and term sharing is used to avoid duplication of common state data. This paper presents several modeling techniques through the example models, ranging from designing state representations to facilitate data sharing and symmetry breaking, encoding actions with operations for efficient precondition checking and state updating, to incorporating domain knowledge and heuristics. Broadly, this paper demonstrates the effectiveness of tabled logic programming for planning, and argues the importance of modeling despite recent significant progress in domain-independent PDDL planners.

New Technology with Porous Materials; Progress in the Development of the Diesel Vehicle Business

2011 ◽  
Vol 484 ◽  
pp. 15-20
Author(s):  
Kazushige Ohno
Keyword(s):  
Porous Materials ◽  
Thermal Shock ◽  
Evaluation Method ◽  
New Technology ◽  
Exhaust System ◽  
Particulate Filter ◽  
Common Rail System ◽  
Long Time ◽  
Main Factors ◽  
Diesel Vehicle

The long time of twenty years has passed since Diesel Particulate Filter (DPF) was proposed before the practical use. The main factors that DPF has been put to practical use in this time, are the same time proposal of the evaluation method of SiC porous materials linked to the performance on the vehicle, and that the nature of thermal shock required for the soot regeneration (combustion of soot) in the DPF is different from the conventional requirement for the rather rapid thermal shock. For the requirements, these include demonstrating utmost the characteristic of SiC’s high thermal conductivity, and overcoming the difficulty of thermal expansion of SiC-DPF by dividing the filter into segments binding with the cement of lower Young’s modulus, and the innovation of technology around the diesel exhaust system such as Common-Rail system. As the results of these, the cumulative shipments of SiC-DPF have reached about 13 million, and it goes at no claim in the market.

scholarly journals Development of a Range of Modified Multifunctional Residual Current Systems and Their Industrial Implementation

2022 ◽  
Vol 1211 (1) ◽  
pp. 012020
Author(s):  
O К Nikolsky ◽  
T M Khalina
Keyword(s):  
Electric Shock ◽  
New Technology ◽  
Residual Current ◽  
Leakage Currents ◽  
Fault Currents ◽  
Industrial Implementation ◽  
Industrial Use ◽  
Current Systems

Abstract The developments of the AltSTU have been reviewed in the area of creating a new technology for preventing technogenic hazards based on the residual current devices. The residual current devices are intended for protecting people from electric shock in case of contact with conductive parts of the electric appliances and shall facilitate reduction of fire risks caused by a prolonged flow of leakage currents and fault currents resulting from them. The results of creating different modifications of protective trip circuits and their industrial use are provided.

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