An Optimal Running Policy for Buffered Continuous Production Processes Subject to Random Breakdown

1997 ◽  
pp. 1-18
Author(s):  
Russell C. H. Cheng
Keyword(s):  
Continuous Production ◽  
Random Breakdown ◽  
Production Processes

scholarly journals A control architecture for continuous production processes based on industry 4.0: water supply systems application

2021 ◽  
Author(s):  
Edgar Chacón ◽  
Luis Alberto Cruz Salazar ◽  
Juan Cardillo ◽  
Yenny Alexandra Paredes Astudillo
Keyword(s):  
Water Supply ◽  
Industry 4.0 ◽  
Power Plants ◽  
Continuous Production ◽  
Continuous Process ◽  
Oil Refining ◽  
Water Supply Systems ◽  
Manufacturing Operations ◽  
Production Processes ◽  
Service Disruption

AbstractIndustry 4.0 (I4.0) brings together new disruptive technologies, increasing future factories’ productivity. Indeed, the control of production processes is fast becoming a key driver for manufacturing operations. Manufacturing control systems have recently been developed for distributed or semi-heterarchical architectures, e.g., holonic systems improving global efficiency and manufacturing operations’ reactiveness. So far, previous studies and applications have not dealt with continuous production processes, such as applications for Water Supply System (WSS), oil refining, or electric power plants. The complexity of continuous production is that a single fault can degrade extensively and even cause service disruption. Therefore, this paper proposes the Holonic Production Unit (HPU) architecture as a solution to control continuous production processes. An HPU is created as a holon unit depicting resources in a continuous process. This unit can detect events within the environment, evaluate several courses of action, and change the parameters aligned to a mission. The proposed approach was tested using a simulated model of WSS. The experiments described in this paper were conducted using a traditional WSS, where the communication and decision-making features allow the application of HPU. The results suggest that constructing a holarchy with different holons can fulfill I4.0 requirements for continuous production processes.

scholarly journals Star fruit juice business development strategy planning using the SWOT method and Fuzzy Analytical Hierarchy Process (FAHP) (Case Study of CV Angkasa Jaya, Blitar City)

2021 ◽  
Vol 3 (1) ◽  
pp. 26-32
Author(s):  
Miftakhurrizal Kurniawan ◽  
Imam Santoso ◽  
Harry Mangatur Silaban
Keyword(s):  
Analytical Hierarchy Process ◽  
Continuous Production ◽  
Production Capacity ◽  
External Factors ◽  
Market Potential ◽  
Government Support ◽  
Fuzzy Analytical Hierarchy Process ◽  
Production Processes ◽  
Internal And External Factors ◽  
Hierarchy Process

The purpose of this study is to analyze the internal and external factors that influence development and provide proposals for competitive strategies which are the priority of developing CV Angkasa Jaya. This study uses Strength, Waekness, Opportunity and Threat (SWOT) methods to identify internal and external factors of the company as well as alternative strategic planning and Fuzzy Analytical Hierarchy Process (FAHP) for determining strategic priorities. The results showed that internal and external factors that affected were products, marketing, production processes, the existence of government support, fruit beverage trends, market potential, technology, competition, shifting market tastes, economy and substitute products. Alternative strategies that become priority development strategies that can be applied by CV Angkasa Jaya are to increase the use of production technology and the internet, improve and maintain product quality in order to be able to compete with other products, develop business potential by making product innovations, carry out continuous production processes, improve and maintain market share, increase production capacity and the last priority is to increase promotion.

Management of Experience Knowledge in Continuous Production Processes

2009 ◽  
Vol 42 (4) ◽  
pp. 2173-2178 ◽  
Author(s):  
Sebastian C. Brandt ◽  
Marcus Schlüter ◽  
Marcus Raddatz ◽  
Matthias Jarke
Keyword(s):  
Continuous Production ◽  
Production Processes

scholarly journals Continuous production of Neisseria meningitidis outer membrane vesicles

2019 ◽  
Vol 103 (23-24) ◽  
pp. 9401-9410
Author(s):  
Matthias J.H. Gerritzen ◽  
Lilli Stangowez ◽  
Bas van de Waterbeemd ◽  
Dirk E. Martens ◽  
René H. Wijffels ◽  
...  
Keyword(s):  
Steady State ◽  
Neisseria Meningitidis ◽  
Outer Membrane ◽  
Continuous Production ◽  
Membrane Vesicles ◽  
Outer Membrane Vesicles ◽  
Volumetric Productivity ◽  
Batch Processes ◽  
Capital Costs ◽  
Production Processes

Abstract Outer membrane vesicles (OMVs) are nanoparticles secreted by Gram-negative bacteria that can be used for diverse biotechnological applications. Interesting applications have been developed, where OMVs are the basis of drug delivery, enzyme carriers, adjuvants, and vaccines. Historically, OMV research has mainly focused on vaccines. Therefore, current OMV production processes have been based on batch processes. The production of OMVs in batch mode is characterized by relatively low yields and high costs. Transition of OMV production processes from batch to continuous processes could increase the volumetric productivity, reduce the production and capital costs, and result in a higher quality product. Here, we study the continuous production of Neisseria meningitidis OMVs to improve volumetric productivity. Continuous cultivation of N. meningitidis resulted in a steady state with similar high OMV concentrations as are reached in current batch processes. The steady state was reproducible and could be maintained for at least 600 h. The volumetric productivity of a continuous culture reached 4.0 × 1014 OMVs per liter culture per day, based on a dilution rate of 1/day. The tested characteristics of the OMVs did not change during the experiments showing feasibility of a continuous production process for the production of OMVs for any application.

IDENTIFICATION AND REUSE OF EXPERIENCE KNOWLEDGE IN CONTINUOUS PRODUCTION PROCESSES

2006 ◽  
Vol 39 (4) ◽  
pp. 166-171 ◽  
Author(s):  
M. Raddatz ◽  
M. Schlüter ◽  
S.C. Brandt ◽  
M. Jarke ◽  
T. Grimbach ◽  
...  
Keyword(s):  
Continuous Production ◽  
Production Processes

scholarly journals Continuous Valorization of Glycerol into Solketal: Recent Advances on Catalysts, Processes, and Industrial Perspectives

2021 ◽  
Vol 2 (2) ◽  
pp. 286-324
Author(s):  
Isabella Corrêa ◽  
Rui P. V. Faria ◽  
Alírio E. Rodrigues
Keyword(s):  
Continuous Production ◽  
Oxidation Stability ◽  
Raw Material ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Fuel Additive ◽  
Production Chain ◽  
Operational Conditions ◽  
Production Processes ◽  
Recent Advances

With the global biodiesel production growing as never seen before, encouraged by government policies, fiscal incentives, and emissions laws to control air pollution, there has been the collateral effect of generating massive amounts of crude glycerol, a by-product from the biodiesel industry. The positive effect of minimizing CO2 emissions using biofuels is jeopardized by the fact that the waste generated by this industry represents an enormous environmental disadvantage. The strategy of viewing “waste as a resource” led the scientific community to propose numerous processes that use glycerol as raw material. Solketal, the product of the reaction of glycerol and acetone, stands out as a promising fuel additive capable of enhancing fuel octane number and oxidation stability, diminishing particle emissions and gum formation, and enhancing properties at low temperatures. The production of this chemical can rely on several of the Green Chemistry principles, besides fitting the Circular Economy Model, once it can be reinserted in the biofuel production chain. This paper reviews the recent advances in solketal production, focusing on continuous production processes and on Process Intensification strategies. The performance of different catalysts under various operational conditions is summarized and the proposed industrial solketal production processes are compared.

scholarly journals Local Detection Of Defects From Image Sequences

2008 ◽  
Vol 18 (4) ◽  
pp. 581-592 ◽  
Author(s):  
Ewaryst Rafajłowicz ◽  
Marek Wnuk ◽  
Wojciech Rafajłowicz
Keyword(s):  
Cross Sections ◽  
Continuous Production ◽  
Fractal Dimensions ◽  
Image Sequences ◽  
Macroscopic Level ◽  
Advantages And Disadvantages ◽  
Production Processes ◽  
Local Methods ◽  
Local Detection ◽  
Detection Of Defects

Local Detection Of Defects From Image SequencesOur aim is to discuss three approaches to the detection of defects in continuous production processes, which are based on local methods of processing image sequences. These approaches are motivated by and applicable to images of hot metals or other surfaces, which are uniform at a macroscopic level, when defects are not present. The first of them is based on the estimation of fractal dimensions of image cross-sections. The second and third approaches are compositions of known techniques, which are selected and tuned to our goal. We discuss their advantages and disadvantages, since they provide different information on defects. The results of their testing on 12 industrial images are also summarized.

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