Similarity Assessment of Mechanical Parts Based on Integrated Product Information Model

2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Ruzhen Zhang ◽  
Xionghui Zhou
Keyword(s):  
Product Information ◽  
Information Model ◽  
Product Information Model ◽  
Design Resources ◽  
Effective System ◽  
Step Algorithm ◽  
The Cost ◽  
Reusable Design

To improve the quality of design, reduce the cost of production, and shorten the cycle of product development, an effective system to manage and reuse existing design resources is established. A novel two-step algorithm based on integrated product information model is put forward to analyze the reusability of design resources. First, the global shape ignoring the interior details is compared with check if they belong to the same category. Then, the detailed feature shape is compared with catch, the exact reusable design resources. Finally, a case study proves that the proposed method has higher accuracy.

Garbage Crusher Variant Design Based on Parameterization

2011 ◽  
Vol 421 ◽  
pp. 316-319
Author(s):  
Yong Hou Sun ◽  
Chun Ge Yao ◽  
Kun Xu ◽  
Guo Cai Jin
Keyword(s):  
Design Methodology ◽  
Product Information ◽  
New Product ◽  
Information Model ◽  
Parametric Model ◽  
Relationship Type ◽  
Variant Design ◽  
Product Information Model ◽  
Design Scheme

Garbage processing is an important content in environment protection.Garbage crusher plays a key role in garbage processing. To enhance design rapidity and quality of garbage crusher, a new garbage crusher variant design methodology based on parameterization is proposed. The principle of variant design based on parameterization is introducted. Parametric model of garbage crusher is established and analyzed. A new product information model is established according to the mating relationship type among constituent parts of assembly. The product information model included several sub-models. It can be droved by parametric dimension, which is defined by customers’ requirement to get customized product’s design scheme. Garbage crusher variant design plug-ins based on SolidWorks is developed with VC++. The garbage crusher’s variant design is implemented.

scholarly journals Radio Planning Considerations in TETRA to LTE Migration for PPDR Systems: A Radioelectric Coverage Case Study

2019 ◽  
Vol 9 (2) ◽  
pp. 250 ◽  
Author(s):  
Diego del Rey Carrión ◽  
Leandro Juan-Llácer ◽  
José-Víctor Rodríguez
Keyword(s):  
Radio Communications ◽  
The Real ◽  
Lte Network ◽  
Real Scenario ◽  
The Cost ◽  
Areas Of Interest ◽  
Radio Planning

Transitioning a Terrestrial Trunked Radio (TETRA) network to a Long-Term Evolution (LTE) network in public protection and disaster relief (PPDR) systems is a path to providing future services requiring high radio interface throughput and allowing broadband PPDR (BB-PPDR) radio communications. Users of TETRA networks are currently considering how to deploy a BB-PPDR network in the coming years. This study offers several radio planning considerations in TETRA to LTE migration for such networks. The conclusions are obtained from a case study in which both measurements and radioelectric coverage simulations were carried out for the real scenario of the Murcia Region, Spain, for both TETRA and LTE systems. The proposed considerations can help PPDR agencies efficiently estimate the cost of converting a TETRA network to an LTE network. Uniquely in this study, the total area is divided into geographical areas of interest that are defined as administrative divisions (region, municipal areas, etc.). The analysis was carried out using a radio planning tool based on a geographic information system and the measurements have been used to tune the propagation models. According to the real scenario considered, the number of sites needed in the LTE network—for a specific quality of service (90% for the whole region and 85% for municipal areas)—is a factor of 2.4 higher than for TETRA network.

Integrating Environmental Aspects in Eco-Design through a Product Information Model

2014 ◽  
Vol 644-650 ◽  
pp. 4809-4813
Author(s):  
Xiang Ji
Keyword(s):  
Environmental Factors ◽  
Impact Evaluation ◽  
Product Information ◽  
Material Selection ◽  
Information Model ◽  
Environmental Aspects ◽  
Detailed Design ◽  
Environmental Evaluation ◽  
Product Information Model ◽  
Environmental Norms

Taking environmental factors into consideration is the primary demand and feature of eco-design. But the environmental factors are often numerous, trivial and related to the entire design phases, which make eco-design difficult to carry out. In order to address this problem, Product Information Model for Eco-design (PIMfE) based on the NIST CPM2 was proposed to provide an organizer and a standard representation for eco-design information. By extending the CPM2, environmental aspects, such as environmental norms, regulations, standards, material selection, disassembly, recycling and environmental impact evaluation, were integrated into product information model. Then the key activities of eco-design namely requirement analysis, detailed design and environmental evaluation could be supported by PIMfE. An example of keypad microphone is used to illustrate the suggested product information model and verify its validity.

scholarly journals Never let me go? A case study of deaccessioning and disposal undertaken at Museum of Wellington City and Sea

2021 ◽  
Author(s):  
◽  
Rebecca Loud
Keyword(s):  
Rational Approach ◽  
Unique Challenge ◽  
Economic Climate ◽  
Systematic Planning ◽  
Strategic Relationships ◽  
The Cost ◽  
Museum Practice

<p>In the current economic climate museums are increasingly being asked to do more with less. For museums that hold collections, this poses a unique challenge. With the cost of collections being relentlessly accumulative, questions are being raised about the long term financial sustainability of current collecting practices. Deaccessioning is being suggested as a way in which museums can improve the quality of their collection without increasing its size. Yet the literature on deaccessioning suggests that the process is fraught with ethical and practical difficulties. By highlighting the negatives aspects of the process, writing in museum studies and practice does little to explore how deaccessioning might be used to achieve positive outcomes. This research addresses this gap by asking whether deaccessioning is a positive tool that, if used appropriately, can assist a museum in improving the quality and manageability of their collection through systematic planning. To understand how and why a museum may permanently remove objects from their collection, the study focuses on one New Zealand museum’s response to the challenge of redeveloping a collection through the process of deaccessioning and disposal. The Museum of Wellington City and Sea’s deaccessioning process is analysed through documentary research and interviews with Museum staff. The interviews offer an understanding of the thought processes and motivations involved in selecting objects to be deaccessioned. The data collected reveals both the challenging aspects of the process but also offers insights into how these aspects can be mitigated or resolved. The conclusions presented in this dissertation suggest that deaccessioning is an integral part of current museum practice that can be used positively to actively shape and refine a museum collection. I argue that some of the beneficial outcomes of the process include greater understanding of collections, improved knowledge and context, resolution of historical collecting problems, strategic relationships built with other museums and improvement in how objects are stored and utilised. More importantly deaccessioning allows museums to determine the character and content of their collections. In order for this to be achieved, I recommend that museums adopt a rational approach to reviewing their collections that is multi-disciplinary, transparent and acknowledges how their collection is used in the achievement of their institution’s mission.</p>

scholarly journals Cost–benefit analysis of a staff recreation centre project: build or lease? – A Case Study

2013 ◽  
Vol 4 (1) ◽  
pp. 41
Author(s):  
Monica Singhania
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
New Delhi ◽  
Employee Morale ◽  
Benefit Analysis ◽  
The Cost ◽  
Community Centre

This case study aims at comprehensively assessing a decision by XYZ Ltd (name withheld due to confidentiality), New Delhi, on whether to build or to lease a recreation centre for its rank-and-file employees. Based on a cost–benefit analysis, we concluded that the centre should be built since the company would recover its investment within 11 years. Apart from the financial considerations, the recreation centre could be considered a long-term investment in employee morale, as it would lead to a better quality of life for the staff and their families, and is likely to enhance their sense of belonging and improve productivity. To date, what little space there is available for hosting family functions is reserved for the use of the officers, and only officers and their families are invited to most company functions. Thus, the other employees feel neglected by the management. Hiring a community centre external to the organisation for a function would involve spending a lot of money as the company is located in a prime real estate area where the cost of land and rentals is huge, and sometimes even availability is an issue. Most of the staff cannot afford such places and are generally under a lot of stress whenever they have a family function. This, in turn, tends to affect their productivity. 

Product Information Model of MEMS

2011 ◽  
Vol 267 ◽  
pp. 109-113
Author(s):  
Xiang Tong Yan
Keyword(s):  
Design Process ◽  
Information Exchange ◽  
Information Needs ◽  
Product Information ◽  
Information Model ◽  
Design Stage ◽  
Design Data ◽  
Design Efficiency ◽  
Product Information Model ◽  
Share Information

A lot of information needs to be processed in the MEMS design process, but this information lack the unified expression format at present. This causes the design stage of MEMS not to be able to share information, furthermore causes low design efficiency. A product information model is presented according to MEMS design stage. XML language is used to describe information of each design stage, and an information exchange and sharing platform model has been established to solve MEMS design data sharing and exchange bottleneck question. The XML technology makes the platform reusable and extensible.

scholarly journals An exploration of the role of advanced clinical practitioners in the East of England

2020 ◽  
Vol 29 (15) ◽  
pp. 864-869
Author(s):  
Claire Hooks ◽  
Susan Walker
Keyword(s):  
Clinical Decision Making ◽  
Clinical Decision ◽  
Self Awareness ◽  
The Uk ◽  
The Cost ◽  
High Degree ◽  
Individual Accountability

Medical staff shortages in the UK have provided impetus for the introduction of advanced clinical practitioners (ACPs). This case study explored the views of 22 ACPs, managers and doctors in primary and acute settings in a region of England, to understand how the role is used, and barriers and facilitators to its success. ACP roles improved the quality of service provision, provided clinical career development and enhanced job satisfaction for staff and required autonomous clinical decision-making, with a high degree of self-awareness and individual accountability. Barriers included disparate pay-scales and funding, difficulty accessing continuing education and research, and lack of agreed role definition and title, due to a lack of standardised regulation and governance, and organisational barriers, including limited access to referral systems. Facilitators were supportive colleagues and opportunities for peer networking. Regulation of ACP roles is urgently needed, along with evaluation of the cost-effectiveness and patient experience of such roles.

scholarly journals Zwinne szacowanie pracochłonności w projektach programistycznych – studium przypadków

2017 ◽  
Vol 1 (3) ◽  
Author(s):  
Maciej Łabędzki ◽  
Patryk Promiński ◽  
Adam Rybicki ◽  
Marcin Wolski
Keyword(s):  
Software Development ◽  
Labor Intensity ◽  
Software Projects ◽  
Current Trends ◽  
The Difference ◽  
Correct Estimation ◽  
The Cost ◽  
Made In

Aim:Aim: The purpose of this paper is to identify common mistakes and pitfalls as well as best practices in estimating labor intensity in software projects. The quality of estimations in less experienced teams is often unsatisfactory, as a result of which estimation as part of the software development process is abandoned. The decision is usually justified by misunderstanding "agility". This article is part of the discussion on current trends in estimation, especially in the context of the new "no estimates" approach.Design / Research methods: The publication is a case study based on the experience of a mature development team. The author, on the basis of literature-based estimation techniques, shows good and bad practices, as well as common mistakes in thinking and behavior.Conclusions / findings: The key to correct estimation is: understanding the difference between labor intensity and time, ability to monitor performance, as well as how to analyze staff requirements for the team.Originality / value of the article: The publication helps to master confidence-boosting techniques for any estimation (duration, and indirectly, the cost of software development) where requirements are known, but mainly at the stage of project implementation (design and implementation).Limitations of the research: The work does not address the problems of initial estimation of projects, i.e. the estimation made in the early stages of planning.

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