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1、.:.; HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6VJD-41SBH15-5&_user=10&_coverDate=12%2F31%2F2000&_alid=1565297944&_rdoc=126&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=6092&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&
2、md5=2acd53f2f228c221fe076f0a4723bcd6&searchtype=a Scheduling of manufacturing systems under dual-resource constraints using genetic algorithmsOriginal Research ArticleJournal of Manufacturing SystemsScheduling belongs to the special class of NP-hard problems for which no polynomial time algorithm ha
3、s been found. Therefore, a schedule that is the best possible near-optimal solution is often acceptable. This paper presents a scheduling approach, based on Genetic Algorithms (GAs), developed to address the scheduling problem in manufacturing systems constrained by both machines and workers. This g
4、enetic algorithm utilizes a new chromosome representation, which takes into account machine and worker assignments to jobs. A set of experiments for determining the best staffing level and machine and worker assignment to jobs was performed. A study was conducted using dispatching rules with various
5、 performance measures for two types of shop characteristics: (i) dual-resource (machines and workers) constrained, and (ii) single-resource constrained (machines only). An example is used for illustration and comparison. The resulting scheduling methodology is capable of determining the best staffin
6、g level and dispatching rules for the chosen performance measure in both single and dual-resource constrained shops. Decisions to adopt the prescribed staffing strategy to improve the primary performance measures such as mean flow time, mean tardiness, and mean waiting time must be balanced by manag
7、ers against the potential increase in direct cost. The developed scheduling approach and formulation proved to be very useful for optimizing production performance under the realistic conditions imposed by both machine and worker availability constraints. Such a tool should be used to define a prior
8、i the best dispatching rules and schedules for a given set of production requirements and objectives. HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088
9、&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1d94961019bcd6712624dd23ebae0b03&searchtype=a Microbial contamination of food refrigeration equipmentOriginal Research ArticleJournal of Food EngineeringRefrigeration systems in chilled rooms in 15 p
10、lants processing a variety of foods were studied. These included plants processing raw meat and salads, Chinese ready meals, dairy products, slicing and packing of cooked meats and catering establishments. An initial survey of total numbers of microbes at a total of 891 sites on evaporators, drip tr
11、ays and chilled room walls was followed up with a more detailed examination of 336 sites with high counts, selecting for Listeria spp., coliforms, enterococci, Staphylococcus aureus and Bacillus cereus. Temperatures (particularly air on and air off, maximum and near defrost heaters) relative humidit
12、y, airflow, layout and cleaning regimes were surveyed. In general, no correlation could be found between any of the physical measurements and the numbers and types of bacteria detected. Maximum mean temperatures in the chilled rooms varied from 1 to +16.9 C and few chilled units were regularly clean
13、ed. Twenty five percent of sites examined had more than 105 colony-forming units per cm2, although, very few pathogens or faecal indicator bacteria were detected. Listeria spp. were not found and coliforms were found only once, in low numbers. Low numbers of S. aureus or B. cereus were present in 9
14、of the 15 plants, B. cereus was found on evaporators and associated drip trays in two catering plants and two plants processing cooked meat. Enterococci and S. aureus were found most frequently in a raw red meat slaughterhouse (always in low numbers). In general, microbial contamination was lower in
15、 rooms where wrapped rather than unwrapped products were stored. The type of product also affected the degree of contamination, with raw red meat and poultry or dry ingredients giving highest counts, and raw vegetables and cooked products lowest. The work demonstrated that bacteria were present on e
16、vaporator cooling coils in all factory cold rooms visited. Although evaporator-cleaning procedures were carried out in some factories as part of routine maintenance these were not shown to be effective at maintaining low levels of bacteria on evaporators. To maintain evaporator hygiene it is suggest
17、ed that more regular cleaning procedures, possibly by means of automated cleansing systems, should be considered.Article Outline HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_li
18、st_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc1 1. Introduction HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85
19、-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe
20、6284be44f150ea2ec l toc2 2. Materials and methods HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_
21、version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc3 2.1. Physical measurements HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_or
22、ig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc4 2.2. Microbiological sampling HYPERLINK sci
23、encedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=
24、S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc5 3. Results HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docancho
25、r=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc6 3.1. Total viable counts (TVC) HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%
26、2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc7 3
27、.2. Specific bacteria HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_use
28、rid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc8 3.3. Effect of temperature, relative humidity and air velocity HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc
29、=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc9 3.4. Cleaning procedures HYPERLINK
30、sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_p
31、ii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l toc10 4. Discussion HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_d
32、ocanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l ack1 Acknowledgements HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6T8J-497RB85-3&_user=10&_coverDate=05%2F31%2F
33、2004&_alid=1565297944&_rdoc=130&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5088&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&searchtype=a&_fmt=full&_pii=S0260877403002358&_issn=02608774&md5=9f28c8b00b7f8fe6284be44f150ea2ec l bibl1 Referen
34、ces HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6V1Y-44C9NTH-1&_user=10&_coverDate=03%2F31%2F2002&_alid=1565297944&_rdoc=131&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5687&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&m
35、d5=8a86d6ed8d50db242dc76c8c5aceec8d&searchtype=a RDF production plants: I Design and costsOriginal Research ArticleApplied Thermal EngineeringMunicipal solid waste (MSW) management calls for the integration of different recovery, recycling and disposal technologies. Among these possible options, MSW
36、 may be treated in order to obtain a fuel to be sold to third party users or directly utilized to generate electricity provided it is of sufficient quality to be employed instead of traditional fuels. In this two-part paper the problem of producing refuse derived fuel (RDF) having a high heating val
37、ue (LHV4000 kcal/kg) has been examined from a technical and economic viewpoint. In the first part article a technical assessment of production plants is carried out. Different production lines have been thus compared in terms of mass efficiency, heating value of produced RDF and treatment cost highl
38、ighting how the choice of process equipment affects the system performances. As a result the process plant configurations enabling to meet the required product specifications are identified. The influence of mixing a high calorific waste such as scrap tires with the stream of household waste, in the
39、 limits allowed by current regulation, has been also analyzed and found to be a prerequisite to meet the prescribed heating value target. Economic feasibility and financial risk of RDF production plants have been successively evaluated in the second part article over a capacity range of 25200 t/h co
40、nsidering also integrated facilities including compost production and/or electricity generation. The analysis has been carried out with reference to the current Italian market scenario even if it has a general applicability and its relevance is wider geographically. HYPERLINK sciencedirect/science?_
41、ob=ArticleURL&_udi=B6V21-47WTG0W-KF&_user=10&_coverDate=05%2F31%2F1980&_alid=1565297944&_rdoc=132&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5689&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=7c2bd5f74314463637abb02f919c7969&
42、searchtype=a Fuzzy controls for maintenance scheduling in transportation systemsOriginal Research ArticleAutomaticaScheduling of periodic maintenance for transportation equipment can often be accomplished by controlling the utilization of individual vehicles. Because of many random effects and due t
43、o the complexity of most schedules it is virtually impossible to achieve a precise match between the prescribed and the actual utilization for each vehicle. Instead of asking the dispatcher to do the impossible, the approach described in this paper prescribes only fuzzy targets for vehicle utilizati
44、on. A feedback loop adjusts the targets periodically based on the actual utilization. A second feedback loop monitors the general performance of the dispatcher and provides a basis for self-learning features of the system. Experimental results about the effectiveness of the fuzzy controls are report
45、ed.經(jīng)典的運(yùn)輸管理算法 HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6VCT-4BJ77TC-3&_user=10&_coverDate=06%2F16%2F2005&_alid=1565297944&_rdoc=133&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5963&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_us
46、erid=10&md5=6a265ae416dcb75bd61894ac2cf219f3&searchtype=a Manufacturing lead-time rules: Customer retention versus tardiness costsOriginal Research ArticleEuropean Journal of Operational Research HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6V4P-4KKNN7V-1&_user=10&_coverDate=10%2F31%2F2007&_
47、alid=1565297944&_rdoc=134&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5764&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=0cfc93e77b30d03e47a081e178e903b4&searchtype=a A systematic approach for product families formation in Rec
48、onfigurable Manufacturing SystemsOriginal Research ArticleRobotics and Computer-Integrated Manufacturing HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6V2D-49568CB-2&_user=10&_coverDate=10%2F31%2F2003&_alid=1565297944&_rdoc=&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5700
49、&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=abb49b6e6985704682371630ea0e9fab&searchtype=a Modeling and specifications of dynamic agents in fractal manufacturing systemsOriginal Research ArticleComputers in Industry HYPERLINK sciencedirect/scie
50、nce?_ob=ArticleURL&_udi=B6TY9-3SYPRRT-2&_user=10&_coverDate=01%2F31%2F1998&_alid=1565297944&_rdoc=&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5613&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=d25c620906d4ca8dca0f0a7c9fe5e0e2
51、&searchtype=a Iterative methods for manufacturing systems of two stations in tandemOriginal Research ArticleApplied Mathematics Letters HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6VF8-3SX6NFF-1&_user=10&_coverDate=01%2F05%2F1998&_alid=1565297944&_rdoc=&_fmt=high&_orig=search&_origin=search
52、&_zone=rslt_list_item&_cdi=6004&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1cb5d37d853b0dec4c893f7cf83f9b80&searchtype=a Waiting line model applications in manufacturingOriginal Research ArticleInternational Journal of Production Economics HYP
53、ERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6VF8-4N4YMFW-1&_user=10&_coverDate=10%2F31%2F2021&_alid=1565297944&_rdoc=&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=6004&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=6cf5ac3
54、cfa59177aae6ff8e4f96467ab&searchtype=a Product mix variability with correlated demand in two-stage food manufacturing with intermediate storageOriginal Research ArticleInternational Journal of Production Economics HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6V4P-4W9V7GC-1&_user=10&_coverDat
55、e=12%2F31%2F2021&_alid=1565297944&_rdoc=&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5764&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=fb5f0be00381537ca67869ab7ddb0149&searchtype=a A Unified Manufacturing Resource Model for r
56、epresenting CNC machining systemsOriginal Research ArticleRobotics and Computer-Integrated Manufacturing HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6VDX-4GMGWDT-1&_user=10&_coverDate=12%2F31%2F2005&_alid=1565297944&_rdoc=140&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5
57、994&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=7d76e6b9d4bbb4e9d534080a9b0e8101&searchtype=a Electronic waste recycling: A review of U.S. infrastructure and technology optionsOriginal Research ArticleResources, Conservation and Recycling HYPER
58、LINK sciencedirect/science?_ob=ArticleURL&_udi=B6TYJ-46NX569-VB&_user=10&_coverDate=12%2F31%2F1991&_alid=1565297944&_rdoc=141&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5620&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=581fe
59、8d40ebbb9745eff5ad2ebc12190&searchtype=a Exact analysis of the joint production quantity-quality of a two-station stable tandem manufacturing system with restricted capacityOriginal Research ArticleComputers & Mathematics with Applications HYPERLINK sciencedirect/science?_ob=ArticleURL&_udi=B6TH9-4N
60、8M893-6&_user=10&_coverDate=01%2F14%2F2021&_alid=1565297944&_rdoc=142&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5277&_sort=r&_st=5&_docanchor=&view=c&_ct=14326&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=6f945843f19d72cc6d427a7a9967b818&searchtype=a A critical revi
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