computational methods in mass

Ngày tải lên: 05/03/2014, 11:21

Ngày tải lên: 01/04/2014, 10:47

Ngày tải lên: 01/04/2014, 10:48

Ngày tải lên: 22/03/2014, 14:20

Ngày tải lên: 01/04/2014, 10:40

... advantage of identifying different clas- ses of antibodies in comparison to other agglutination methods. Different results may be obtained depend- ing on the nature of anti-globulin. This situation ... and blocking antibodies that form against brucella, the titers that it has determined were higher in number than STA and Coombs methods has higher sensitivity and specificity (4). In a study ... hand, appear in three weeks and reach a peak in six to eight weeks. Coombs test is needed to investigate blocking antibodies. Dilutions need to be performed in very high ratios in order to...

Ngày tải lên: 25/10/2012, 10:56

... holonic concepts into a manufacturing setting: Holon: An autonomous and cooperative building block of a manufacturing system for transforming, transporting, storing, and/or validating information ... min{a n ,b n ,c} = max{min{ min{a n ,b n },c},min{a N+1 ,b N+1 ,c}}. Next, if the case N = 2 is used, it follows that min{a n ,b n ,c} = min{max{ min{a n ,b n },min{a N+1 ,b N+1 }},c} = min{ ... is decomposed into manufacturing features (with corresponding machining operations). • Factory Manager(s) negotiates with resource agents for machining operations, awards machining operation...

Ngày tải lên: 17/10/2013, 11:15

... parts 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 WIP in IB 05 8 10 Machine Utility 7550 100 % ©2001 CRC Press LLC • Minimizing lateness/tardiness • Minimizing makespan • Maximizing system/machine utilization • Minimizing WIP (work in process) • ... Dispatching Rules in FMSs This section explains a fuzzy real-time routing selection and an intelligent decision-making tool using fuzzy expert systems for machine loading in an FMS. In the complex ... Simulation of scheduling rules in a flexible manufacturing system using fuzzy logic, IEA-AIE96 Ninth International Conference on Industrial and Engineering Application of Artificial Intelligence and...

Ngày tải lên: 19/10/2013, 18:15

... themselves. In the traditional part–machine incidence matrix, assuming binary values, sequence information is ignored. To include sequence information, a sequence-based incidence matrix is introduced, ... manufacturing (CM) systems. ANNs also hold considerable promise, in general, for reducing complexity in logistics, and for streamlining and synergistic regrouping of many operations in the supply chain. ... components for cellular manufacturing, keeping a concurrent engineering framework in mind. It utilizes two middle layers, as shown in Figure 4.4. The inputs for the network include design features of...

Ngày tải lên: 19/10/2013, 18:15

... An intelligent design retrieving system should aim toward a natural linking of the next process planning and manufacturing stages. 7.2.4 Conducting Retrieval Tasks with a Certain Degree of Incomplete ... good introduction to engineering design is presented in Engineering Design Methods: Strategies for Product Design by Nigel Cross. A recent survey about part/machine classification and coding can ... approaches are the most widely used indexing methods for components in industry. While these methods are suitable as a general search mechanism for an existing component in a database, they suffer critical...

Ngày tải lên: 23/10/2013, 16:15

... for Finding the Optimum Process Routings for Parts The aim of a cellular manufacturing system design is minimizing the cost of the system. It can be gained by dividing the system into independent ... including parts, machines, and information into some groups or subsystems. Introduction of group technology into manufacturing has many advantages, including a reduction in flow time, work -in- process, ... machines into machine groups Aim: Clustering machines into machine groups. Input: An MCS matrix for the selected process routings for parts. Objective: Maximize the similarity of adjacent machines in...

Ngày tải lên: 23/10/2013, 16:15

... engineering drawing. For machining, process planning includes determination of the specific operations required and their sequence, which include tooling, fixturing, and inspection equipment. In ... crossover of two strings Input: string-1 and string-2. Output: offspring-1 and offspring-2. 1. Determine a cut point randomly from all the positions of a string. Each string is divided into two parts, ... Machines? Cutters? Fixtures? Set-ups? Machining features Machining features Operations? Machines & Cutters? Fixtures & Set-ups? (a) Process planning in a linear manner. (b) Process planning...

Ngày tải lên: 27/10/2013, 23:15

... applying parallel machines in industrial manufacturing, only a handful of papers are found on sequencing machining operations for parallel machines [3, 22]. The combinatorial nature of sequencing ... slack = 1 14 Lee, Yuan-Shin et al "Soft Computing for Optimal Planning and Sequencing of Parallel Machining Operations" Computational Intelligence in Manufacturing Handbook Edited by ... variables and 470 constraints. This clearly indicates that sequencing the parallel machining operations by using conventional integer programming method could be computationally expensive and inefficient [4]....

Ngày tải lên: 27/10/2013, 23:15

... of improving the product quality, increasing the effect events in production, increasing autonomity and intelligence in manufacturing lines, reducing the reac- tion time of manufacturing systems, ... combination of features in order to reduce the computational burden and increase efficiency in clustering. This can ensure better performance of the monitoring system, while reducing the monitoring ... or short-term characteristics. For instance, in machining processes, if vibration from the ground is coming into the machine processing the materials, and lasts continuously for some time, it can...

Ngày tải lên: 06/11/2013, 09:15

... 100 revolutions per minute. 7 Initial reading Initial viscosity (taken at 3 1/2 minutes). 8 Build up Change in viscosity from initial reading (taken after 18 minutes) 9 20 minute gelation Thixotropy ... Casting the slip in a plaster mold for a specified duration 3. Removing the mold 4. Air drying the cast piece 5. Spray gazing the dried piece 6. Firing the gazed piece in a kiln 7. Inspecting ... Machining Application Abrasive flow machining (AFM) was originally developed for deburring aircraft valve bodies. It has many applications in the aerospace, automotive, electronic, and die-making...

Ngày tải lên: 06/11/2013, 09:15

... recent interest in using genetic algorithms to address the problem. In the following sections, we explain how to solve them with genetic algorithms, including resource-constrained project scheduling, ... manpower, money, machines, tools, materials, energy, and so on. Tasks can have a variety of interpretations from machining parts in manufacturing systems up to processing information in computer systems. ... the natural building blocks and intend to use such crossover to maintain building blocks in offspring in much the same manner as Holland described. The method has the following major steps: (i)...

Ngày tải lên: 06/11/2013, 09:15

... approximations, during which the training data set is split into certain training data set and possible training data set. Subsequently, these training sets are forwarded to the GA-based search engine for ... rule in the original data set. This index can be viewed as the probability of classifying an inconsistent training data set correctly. For each certain rule extracted from the certain training ... developed to assist engineers in diagnosing the equipment. Defining Terms Certain rules: Rules that can definitely classify some observations into a certain concept. Certain training data set: The data...

Ngày tải lên: 13/12/2013, 01:15

... moving-window sample method is chosen, except that ARL values of the designs using the moving-window sample method are in general smaller than those using the independent method, considering ... with larger values meaning larger shifts. Note that both neural networks were trained off-line using simulations. By incorporating the trained weight matrices, one can start using the proposed method. ... Backpropagation training is the most popular supervised neural network training algorithm. The training is designed to modify the thresholds and weights so that the overall error will be minimized. At...

Ngày tải lên: 13/12/2013, 01:15