Workshop Management Research Articles

第8回世界アフリカ言語学会議（WOCAL8）

第8回世界アフリカ言語学会議（WOCAL8）

The study of intelligent scheduling algorithm oriented to complex constraints and multi-process roller grinding workshop

Roller grinding workshop is a typical multi-unit and multi-task manufacturing scenario, which is aimed to repair the surface damage of the rollers caused by the rolling process, so that the rollers can be reused. Due to the process complexity of roller grinding workshop and the large volume and weight of the roller, hoisting and transportation mode with multiple cranes is required. Consequently, the scheduling of the roller grinding workshop needs to consider both the task sequencing in time and the noninterference of the multi-crane trajectory in space. In this paper, the intelligent scheduling of roller grinding workshop is studied based on the characteristics of complex tasks and space-time coupling constraints. Firstly, the scheduling basis is established based on priority rules and process constraints. In order to solve the scheduling problem under the space-time coupling constraints, the position coordinate system is established, and then the algorithms of crane position tracking and cooperative motion without interference are developed. Further, considering the transportation time of crane and its out of sync time point with the processes, the intelligent decision and scheduling algorithm are developed based on the dynamic priority strategy defined to realize scheduling, including time decision, crane decision, and process decision. With the developed intelligent scheduling algorithm applied, the simulation of the roller grinding workshop is conducted under three combinations of priority strategy and noninterference strategy to verify algorithm performance. Under the guarantee of crane noninterference during the full production, the efficiency is improved by 22.1% compared with the existing processing mode of industry. Additionally, EPTR (effective process time rate) based on dynamic priority strategy and noninterference strategy B is up to 100% to avoid intervals between two processes in the scheduling. The dynamic priority developed in this paper reveals more efficiency than MOR principle, while with the strategy B the CUR (crane utilization rate) can be improved more than 20% under the condition of enough machines which facilitates to obtain shorter makespan than strategy A. The intelligent scheduling algorithm developed guarantees the effectiveness and rationality of scheduling with multi-unit and multi-task under the complex constraints. Finally, in order to realize the automatic and intelligent operation of the roller grinding workshop, the management software of the roller grinding workshop is developed by integrating the intelligent scheduling algorithm, which realizes the intelligent production, monitoring, and management of the roller grinding workshop during the full production cycle.

Research on Multi-Level Context-Aware Material Data Model within Manufacturing Enterprises

Context-aware applications can sense and explore the context of production processes to provide proper and useful services to managers in workshop. And materials data integration and control are one of core competences concerning with the development of mass data application in manufacturing enterprises. In this paper, a context-aware materials data integration meta model is presented which is incorporating an advanced materials demand mapping and decomposition mechanism to support fine-grained materials data in the right time for the provision of materials services, based on the analysis of the application context involving the key points and relationships in their manufacturing processes. In this model, materials data integration is controlled by the demand state transitions at different levels including workflow levels, control levels and data levels, which incorporates dynamic context information by checking the context constraint associated with each application task at the time of the specific request submission. Finally, a case is given which is implemented in a complex equipments enterprise.

Application of Barcode Information and Acquisition System for the Machining Process Technology

Workshop information collection is the indispensable link in enterprise production. In view of the low efficiency, high error rate characteristics existed in traditional workshop information collection. This paper puts forward the idea of applying barcode to the production management, including products, materials, personnel and equipment. This method can realize the whole management of workshop condition, reduce the cost of enterprise production and enhance the competitiveness of enterprise. The above research has been applied in the machining process, which proves that to use barcode in the workshop management is feasible. The real underlying data is provided as reliable data support to make the workshop production platform.

Applications of RFID in the Mechanical Processing

With the development of Radio Frequency Identification technology in recent years, it has been successfully applied to all areas of life. This article mainly elaborates the concept of RFID, system components, tracking and detection of machining processes and some other applications workshop production and management. It also puts forward the problems of RFID in machining and the application of RFID in machining for further prospects.

Survey of body part symptoms among workers in a car tyre service centre.

The purpose of this study was to investigate the prevalence of body part symptoms and sources of injury/discomfort among workers in a car tyre service centre. Questionnaire survey and interview session were used to identify the level of body discomfort areas and sources of injury or discomfort. From questionnaire survey findings, 12 of respondents have body discomfort in the neck (66.7%%), shoulder (83.3%), elbow/forearm (75%), hand/wrist (91.7%), knee (58.3%), lower leg (75%), ankle/foot (33%) and lower back (30%). The main sources of injury/discomfort in the workplace were poor body posture (75%), bending the back (75%), highly repetitive motions (75%), lifting heavy objects (83.3%), the long-term standing (66.7%), long-term squatting (58.3%), bending the neck (66.7%) and high hand force (58.3%). About 50% reported that poor workplace design also contributed to injury while 41.7% mentioned the use of hand tools. To address modifying the ergonomic hazards, engineering controls and administrative controls can be used. The study will be useful to ergonomists, researchers, consultants, workshop managers, maintenance workers and others concerned with identifying body part symptoms and sources of injury/discomfort at the workplace.

Dynamic Context-Aware System Based on Multi-Level Material Data Control Model

Context-aware applications can sense and explore the context of production processes to provide proper and useful services to managers in workshop. Firstly, a multi-level ontology model of materials is found which is expressed in OWL as an ontology collection of describing places ages and events and associated properties among them. Secondly, a multi-level context-aware control model and its mechanism are produced. In this model, data integration is controlled by the demand state transitions at different levels including workflow levels, control levels and data levels, which incorporates dynamic context information. And context is classified based on the analysis of demand into five main categories, which is further categorized as simple condition and composite condition to form a multi-level context. And the data integration model is implemented dynamically by checking the context constraint associated with each application task at the time of the specific request submission. Finally, a case study is developed within a manufacturing enterprise to show the benefits of the model.

Discrete Manufacturing Plant Quality Control System Based on SPC

The discrete manufacturing plant is the basic of executing enterprises agile manufacture strategy, between enterprise upper management systems and manufacturing process control systems. The constitute structure and the software model of a workshop integrated quality control system is introduced by this paper. The methods and technologies of traditional workshop management cant meet current needs of enterprises. The field management and workshop information integration are given more and more attention by enterprises. In contrary to conventional SPC applications, manufacturing plant based unmanned manufacturing environments require automation of the quality control process. The system is suitable for the production process quality analysis and judgment in the discrete manufacturing plant environment. It can significantly increase the product quality and economic efficiency of enterprises.

Multi-agent system “Smart Factory” for real-time workshop management in aircraft jet engines production

The paper presents design principles of multi-agent system “Smart Factory” for real time resource management in manufacturing workshops. This objective is achieved by flexible event-driven reaction on changes in factory environment, resource allocation, scheduling, optimization and controlling in real time. The developed method of adaptive resource scheduling based on multi-agent technology, main functionality and architecture of the system are discussed. The results of application and measured benefits for aircraft jet engines manufacturer are presented.

Design and Implement of Dynamic Context-Aware Monitoring System Based on OWL

Context-aware applications can sense and explore the context of production processes to provide proper and useful services to managers in workshop. The monitoring levels are partitioned and designed in this article. And the multi-level ontology model of materials is found which is expressed in the Web Ontology Language (i.e. OWL) as a ontology collection of describing places ages and events and associated properties among them. Within an intelligent monitoring system, dynamic adjusting algorithm of linking local coordination with global coordination for lacking parts is brought forward and dynamic coordination structure is put up based on event-driven architecture. Context-aware reactive behaviors can be expressed by using rules written in OWL Language, especially developed for context-aware applications.

Involving the Rural Landscape Environmental Principle in Strategic Planning by Sustainable Symbiosis and Cultural Creativity Involvement

In the context of globalization, urban development's core value, the connotation and the future had the huge transformation and the innovation. If the community planning advances to the international competition city, innovation in populace mobilization, inject new life concept and Change traditional industry management state is a series of urgent execution important work. And impetus community development and professional planners union for and international scene trail connection important interface also for current important development topic. Main topic namely by thorough community actual subject design, strengthens the community development and professional planners new knowledge energy such us the community space society to diagnose ability, the community develops the policy and the resources utilization, community space different specialized cooperation creativity ponder, communication skills, the operation and management of community workshops, international perspective, as well as community planning team and community partnership, continues forever the environment ecology by the specialized community manager and community resident communal development set of brand-new technologies and the life quality's new target, creation in the future turning point. And the new issues of city and countryside region activation and restoration are the key interface in line with the international arena and are the current important development topic.

Research on Workshop Management System of Body-in-White Pressing Production

Based on the analyzing of the characteristics of a Body-In-White pressing production process a pressing workshop production management system has been given in order to make the ERP production scheduling more executable. The detailed function model of it such as task assignment, quality control, mold maintenance and production scheduling has been thoroughly discussed. In order to make the production line capability balance the task dispatching algorithm has been given and the dynamic dispatching and controlling process has been explained. This system can be integrated with the upper ERP/CAPP/PDM system which can improve the information level of a company.

The Workshop Information Management for Underwater Production Facilities

As an important tool of workshop information management, workshop production management system has improved the production efficiency, management level and market competitiveness greatly. Based on the characteristics of deep-water production facilities a related workshop management system has been developed in this paper. The way of workshop data acquisition is presented in detail, bar coding technology is applied in the system to facilitate the information collection of workshop. The workshop information model is probably analyzed, describing the flower of information and material in the workshop visually. In addition, the general structure and modules of the system that is divided into eight modules, such as the planning information management, production equipment management and workshop statistic is described. The structure of the software which is designed in Browser/Server model and information management database is also emphatically studied. The workshop production management system has become a bridge between the ERP at the higher level and the shop floor at the lower level, achieving the information exchanged and shared quickly, then making the workshop production process transparency. Through this system, director can track semi-finished parts in the production line, supervise the production equipment operation conditions, promise the worker in place timely and arrange production plan, manage the production process flexibly.

Designing workshop management system supporting decision making with OODB

In this study, a workshop production management system supporting decision making is designed for use in small and medium-sized machine workshops. Small and medium sized companies’ quality, price, and delivery time issues are in a tough competitive environment. Especially such as the orders which cannot be delivered to customers in time, disruptions in production schedules and low production performance seem to be the major problems facing in this type of sector. Through this research it is aimed to design software to keep all the needed information in a suitable database and give the customers fast and accurate information. In order to support future implementation of decision support system, the software is designed such that it will enable the user to easily analyze its production parameters such as efficiency, cost deviation of production from planned cost, cost estimation of new production, etc. Due to the natural structure of this project Object Oriented database is chosen for implementation. These databases can be constructed through object-oriented language and in the scope of this work .NET based db4o is used. For software development, Unified Modelling Language (UML) is used since by using UML the database system is well defined, visualized, generated and specified considering complete project. The user interfaces are designed by using ASP.NET for easy access of the user location independently. It is seen that without using so much coding load, an effective object-oriented database can be designed. It is possible to use the same language for both application and object-oriented databases in contrast to relational databases. The designed database can be used in different machine workshops with small modifications depending on the specifications of workshops.

Multilayer perceptron for simulation models reduction: Application to a sawmill workshop

Simulation is often used to evaluate supply chain or workshop management. This simulation task needs models, which are difficult to construct. The aim of this work is to reduce the complexity of a simulation model design. The proposed approach combines discrete and continuous approaches in order to construct speeder and simpler reduced model. The simulation model focuses on bottlenecks with a discrete approach according to the theory of constraints. The remaining of the workshop must be taken into account in order to describe how the bottlenecks are fed. It is modeled through a continuous approach thanks to a neural network. In particular, we use a multilayer perceptron. The structure of the network is determined by using a pruning procedure. For validation, this approach is applied to the modelisation of a sawmill workshop.

The measures of strengthening the management of preparation workshop in General Hospital of Beijing Military Region

The measures of strengthening the management of preparation workshop in General Hospital of Beijing Military Region

Synopsis of partial-body radiation diagnostic biomarkers and medical management of radiation injury workshop.

Radiation exposures from accidents, nuclear detonations or terrorist incidents are unlikely to be homogeneous; however, current biodosimetric approaches are developed and validated primarily in whole-body irradiation models. A workshop was held at the Armed Forces Radiobiology Research Institute in May 2008 to draw attention to the need for partial-body biodosimetry, to discuss current knowledge, and to identify the gaps to be filled. A panel of international experts and the workshop attendees discussed the requirements and concepts for a path forward. This report addresses eight key areas identified by the Workshop Program Committee for future focus: (1) improved cytogenetics, (2) clinical signs and symptoms, (3) cutaneous bioindicators, (4) organ-specific biomarkers, (5) biophysical markers of dose, (6) integrated diagnostic approaches, (7) confounding factors, and (8) requirements for post-event medical follow-up. For each area, the status, advantages and limitations of existing approaches and suggestions for new directions are presented.

Application and Key Technique Research of Monitoring and Control System for Drawing and Coving Workshop

Aiming at the presently slow informationization development phenomenon in the drawing and coving workshop of textile enterprise, we analyze actual existing problems in production management and information development, use some theories and techniques to propose many solutions. According to the actual requirements of workshop, we implement a real-time monitoring and control system based on LAN. System’s structure and workflow, the key techniques within the system development are researched, the accuracy of production data is ensured by using numerical approximation theories. As proved by practice, the system's structure is simple, easy maintenance and low cost, meantime, furthermore, system can run stably, collect accurately production data, and its functions meet production control and information management of workshop needs.

Pedagogy of Teaching Value Management in Postgraduate Construction and Property Program

As value management (VM) has been increasingly applied to enhance value in public construction projects, the core subject entitled “Value Management for Construction and Property” is being offered to postgraduate students in the Department of Building and Real Estate at the Hong Kong Polytechnic University. Under the new outcome-based curriculum, the learning outcomes, pedagogy of teaching VM, and activities of the VM workshops for the subject are described in this paper. The results of a questionnaire survey of the students’ feedback on the performance of the workshops for the academic year 2007–2008 are presented and discussed. Students believed that value management workshops are essential in the curriculum. They expressed that it was a valuable experience to participate in the VM workshop which enabled them to have a better understanding of the subject. Some improvement is also recommended for future organization and management of workshops based on the lessons learned in these workshops.

Planning of educational courses--a model of the management of an educational workshop for teachers of medicine.

Planning of educational courses--a model of the management of an educational workshop for teachers of medicine.