scholarly journals Graph-matrix modeling of production systems as a basis for managing the production capacity of metal working enterprises

2021 ◽  
pp. 98-102
Author(s):  
N. V. Kireeva ◽  
E. S. Zambrzhitskaia ◽  
S. S. Voinov
Keyword(s):  
Production Systems ◽  
Production Capacity ◽  
Metal Working ◽  
Matrix Modeling

A New Procedure of Production Orders Sequencing in Mixed-Model Production Systems

2014 ◽  
Vol 1036 ◽  
pp. 864-868 ◽  
Author(s):  
Marcin Zemczak ◽  
Damian Krenczyk
Keyword(s):  
Task Scheduling ◽  
Production System ◽  
Mixed Model ◽  
Production Systems ◽  
Production Capacity ◽  
Approximate Solutions ◽  
Task Sequence ◽  
Optimal Method ◽  
Sequencing Problem ◽  
Car Sequencing

The paper presents the task scheduling issue, which main aim is to establish a proper sequence of tasks, that would maximize the utilization of companys production capacity. According to the literature sources, the presented sequencing problem, denoted as CSP (Car Sequencing Problem) belongs to the NP-hard class, as has been proven by simple reduction from Hamiltonians Path problem. Optimal method of solution has not yet been found, only approximate solutions have been offered, especially from the range of evolutionary algorithms. Regardless of specific production system, while considering reception of new tasks into the system, current review of the state of the system is required in order to decide whether and when a new order can be accepted for execution. In this paper, the problem of task scheduling is limited to the specific existing mixed-model production system. The main goal is to determine the effective method of creation of task sequence. Through the use of computational algorithms, and automatic analysis of the resulting sequence, rates of production are able to be checked in a real time, and so improvements can be proposed and implemented.

Guest Editorial by Gilles Rodriguez

2021 ◽  
Author(s):  
Gilles Rodriguez
Keyword(s):  
Energy Demand ◽  
Nuclear Energy ◽  
Guest Editorial ◽  
Production Systems ◽  
Production Capacity ◽  
Strong Increase ◽  
Mutual Aid ◽  
Health Crisis ◽  
Radiation Science ◽  
Asme Journal

Abstract It is an honour and a pleasure to wish to all actors of the ASME Journal of Nuclear Engineering and Radiation Science (Chair, Editors, Authors, Readers, and Reviewers) my New Year's greetings. This 2022 year must be seen towards an exit of the COVID-19 pandemic situation, looking for better perspectives. We must capitalize on the best of this period and on the way out of the health crisis. Even in this extremely difficult context, the links still existed. They were even been strengthened by showing more solidarity, support and mutual aid. We must keep these qualities within our scientific community, because we must now face a new decisive challenge: responding to a very strong increase in carbon-free energy demand. In order to meet this challenge, nuclear energy has a major role to play among all other non-CO2 emitting sources of energy. Its great flexibility and massive production capacity makes it a perfect complement to renewable production systems.

Assessment of Production Capacity and Ability of Rapid Response to Changing Customer Expectations

2015 ◽  
Vol 809-810 ◽  
pp. 1378-1383
Author(s):  
Iwona Paprocka ◽  
Sonia Cyba
Keyword(s):  
Production Systems ◽  
Production Capacity ◽  
Business Environment ◽  
Rapid Response ◽  
Interarrival Time ◽  
Company Size ◽  
Customer Expectations ◽  
New Concepts ◽  
A Company ◽  
Operating Company

Companies must respond quickly to customer needs and ensure the desired quality and low price in order to remain competitive in a market. It becomes necessary to create new concepts of production systems that meet all requirements imposed by consumers. The increase of reliability of machines and equipment, staff competence and forecasting a size and subject of demand increase the ability to react quickly to changes in the business environment. Therefore, the objective of this paper is to estimate the agility characteristics of a company (size of demand, interarrival time of orders and reliability of machines) and to verify its production capacity and rapid response capabilities. The characteristics are estimated for three variants of the production system: self-operating company, companies operating in cooperation, company buying additional machine.

scholarly journals PSV-30 A nutritional survey of commercially available grass-finished beef

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 341-342
Author(s):  
Jason Rowntree ◽  
Sara Bronkema ◽  
Raghav Jain ◽  
Jeannine Schweihofer ◽  
Chad Bitler ◽  
...  
Keyword(s):  
Production Systems ◽  
Production Capacity ◽  
The United States ◽  
Nutritional Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Omega 3 ◽  
Forage Crops ◽  
Carotene Content ◽  
Finishing Diets ◽  
The Impact

Abstract Consumer interest in the source of their food, its environmental footprint, and the impact of diet on health has supported the growth of the grass-finished beef (GFB) industry. Studies have concluded that GFB has distinct nutritional differences from conventionally-finished beef. As the GFB industry continues to expand, it is vital to continue to explore the nutritional complexities and variation in the product. To achieve this, a survey of grass-finishing production systems throughout the United States was conducted, and beef finished on the participating farms was analyzed for its nutritional composition, including fatty acid (FA), mineral and fat-soluble vitamin contents. Samples were analyzed from 12 producers and annual production capacity of farms ranged from 25 to 5,000 cattle, with a mean age of cattle at harvest of 26.8 ± 2.30 mo. An array of finishing diets included grazing exclusively in perennial pasture, incorporating annual forage crops, and feeding a variety of harvested forages with supplementation of non-starch feed byproducts. Beef muscle tissue FA content was analyzed by gas chromatography-mass spectrometry (GC–MS). The mean ratio of omega-6 (n-6) to omega-3 (n-3) FA in samples varied significantly by producer, ranging from 1.80 to 28.3 (P < 0.0001), with an overall sample set median of 4.10. A selection of minerals including iron, magnesium, and potassium were analyzed by ICP emission spectroscopy and mineral content significantly differed by producer for all minerals (P < 0.001). Mean α-tocopherol and β-carotene content was 610.6 μg/100 g beef and 32.2 μg/100 g, respectively. The amount of these antioxidants also varied between producers (P < 0.0001), but tended to be greater in beef finished solely on fresh forages. This survey indicates that commercially available GFB can vary in nutritional composition due to the diverse practices used to grass-finish cattle.

scholarly journals Spatial Assessment of Jerusalem Artichoke’s Potential as an Energy Crop in the Marginal Land of the Shaanxi Province, China

2021 ◽  
Vol 13 (24) ◽  
pp. 13576
Author(s):  
Fang Yin ◽  
Ziyue Jin ◽  
Jiazheng Zhu ◽  
Lei Liu ◽  
Danyun Zhao
Keyword(s):  
Production Systems ◽  
Production Capacity ◽  
Jerusalem Artichoke ◽  
Assessment Method ◽  
Shaanxi Province ◽  
Energy Crop ◽  
Marginal Land ◽  
Land Resources ◽  
Agricultural Production Systems ◽  
Suitable Land

As a foodstuff crop, Jerusalem artichoke has a promising prospect for providing sustainable feed-stock sources for bioenergy development. Due to relatively limited cultivated land resources in China, it is crucial to evaluate Jerusalem artichoke’s potential production capacity in marginal land. Based on Jerusalem artichoke’s growth and photosynthetic characteristics, the agricultural production systems simulator model (APSIM) and multi-factor integrated assessment method were integrated to provide an operational method for comprehensively evaluating the marginal land resources suitable for developing the plantation of Jerusalem artichoke in the Shaanxi province, China. The results showed that 0.73 million ha of marginal land was suitable for Jerusalem artichoke cultivation in the Shaanxi province, and 5.4 million ha of marginal land was fairly suitable for Jerusalem artichoke cultivation, with the yield reaching 44,289 kg/ha and 38,861 kg/ha, respectively. The suitable land resources are mainly located in Yan’an (0.18 million ha), Hanzhong (0.13 million ha), and Baoji (0.08 million ha), most of which are moderate dense grassland (accounting for 50.6% of suitable land), dense grassland (accounting for 16.2% of suitable land), shrubland (accounting for 14.7% of suitable land), and sparse forest land (accounting for 9.18% of suitable land). The findings of this study can be used to establish targeted policies for Jerusalem artichoke development in China and other countries, particularly those along the Silk Road.

scholarly journals TEST PLANNING OF SERVICEABILITY OF FLEXIBLE PRODUCTION SYSTEMS EQUIPMENT CONSIDERING PLANNING AND MONITORING OF AGRICULTURAL EQUIPMENT

2020 ◽  
pp. 65-75
Author(s):  
Natalia Veselovskaya ◽  
Oleksandr Malakov ◽  
Elvira Manzhos ◽  
Olena Hnatyuk
Keyword(s):  
Production Systems ◽  
Production Capacity ◽  
Time Frame ◽  
Normal Operation ◽  
Critical Conditions ◽  
Flexible Production ◽  
Test Planning ◽  
Optimal Interval ◽  
Operating Modes ◽  
Flexible Production Systems

The article discusses the main problems and features of test planning of serviceability of flexible production systems (FPS) equipment, taking into account all possible factors. The basic dependencies of repair and verification at variable operating modes have been monitored and possibl1e ranges of system existence depending on internal factors and changes in working time, environmental characteristics and factors affected the system have been derived. As the result of the analysis, mathematical modeling and determination of critical conditions of existence of the system have been carried out. The basic criteria and tolerances for the normal operation of FPS equipment have been determined. The calculated dependencies for the further improvement of the system and the parameters for the smooth operation of the equipment by means of a mathematical analysis have been found. Methods of test planning of operability of FPS equipment have been developed, the time frame of stopping various systems for the slightest l ss of production capacity, taking into account the duration of the diagnostic work of used equipment has been determined. The planning of inspections for a product that is in a state of readiness for action, possible only after replacement, is considered. These circumstances allow us to determine the optimal interval between inspections by the criterion of minimum expected costs, attributed to the average time of serviceability for the cycle in steady state. When planning inspections of a product that is in a state of static readiness for action, the possibility of making erroneous decisions during the inspection is taken into account. The products which start to act at occurrence of some emergency conditions which moments of occurrence are casual and have distribution W (t) are considered. It is determined that inspections and necessary repairs allow to increase readiness, if at the same time certain conditions concerning quantitative ratios of the sizes influencing it are fulfilled.

scholarly journals Transmission of Yersinia pseudotuberculosis in the Pork Production Chain from Farm to Slaughterhouse

2008 ◽  
Vol 74 (17) ◽  
pp. 5444-5450 ◽  
Author(s):  
Riikka Laukkanen ◽  
Pilar Ortiz Martínez ◽  
Kirsi-Maarit Siekkinen ◽  
Jukka Ranta ◽  
Riitta Maijala ◽  
...  
Keyword(s):  
Yersinia Pseudotuberculosis ◽  
Production Systems ◽  
Production Capacity ◽  
Organic Production ◽  
Production Chain ◽  
Pork Production ◽  
Conventional Farms ◽  
High Prevalence ◽  
Conventional Production ◽  
On Farm

ABSTRACT The transmission of Yersinia pseudotuberculosis in the pork production chain was followed from farm to slaughterhouse by studying the same 364 pigs from different production systems at farm and slaughterhouse levels. In all, 1,785 samples were collected, and the isolated Y. pseudotuberculosis strains were analyzed by pulsed-field gel electrophoresis. The results of microbial sampling were combined with data from an on-farm observation and questionnaire study to elucidate the associations between farm factors and the prevalence of Y. pseudotuberculosis. Following the same pigs in the production chain from farm to slaughterhouse, we were able to show similar Y. pseudotuberculosis genotypes in live animals, pluck sets (containing tongue, tonsils, esophagus, trachea, heart, lungs, diaphragm, liver, and kidneys), and carcasses and to conclude that Y. pseudotuberculosis contamination originates from the farms, is transported to slaughterhouses with pigs, and transfers to pluck sets and carcasses in the slaughter process. The study also showed that the high prevalence of Y. pseudotuberculosis in live pigs predisposes carcasses and pluck sets to contamination. When production types and capacities were compared, the prevalence of Y. pseudotuberculosis was higher in organic production than in conventional production and on conventional farms with high rather than low production capacity. We were also able to associate specific farm factors with the prevalence of Y. pseudotuberculosis by using a questionnaire and on-farm observations. On farms, contact with pest animals and the outside environment and a rise in the number of pigs on the farm appear to increase the prevalence of Y. pseudotuberculosis.

scholarly journals INFORMATION AND ANALYTICAL SUPPORT OF SAFE-ORIENTEERING DEVELOPMENT OF PRODUCTION SYSTEMS IN FOOD INDUSTRY

2021 ◽  
Vol 20 (1(47)) ◽  
pp. 234-252
Author(s):  
V. Rummo ◽  
Y. Rabotin
Keyword(s):  
Food Industry ◽  
Production Systems ◽  
Production Capacity ◽  
Maximum Load ◽  
Current Load ◽  
Production Potential ◽  
Structural Units ◽  
Potential Partner ◽  
Technological Level ◽  
Crisis Conditions

The article is devoted to the development of improved information and analytical support for the design of several options for production processes in the food industry, which are implemented both with the same and with different options for a set of technologically specialized structural units of the enterprise. When choosing the option of safe-oriented development of the production system, the criteria of minimum financial costs, minimum time costs, maximum load of structural units were used. To solve the problems of forming a virtual safe-oriented development of production systems at enterprises that are part of a network organizational form, an algorithm for evaluating potential partners based on an analogue of a multifactor matrix model is presented. First, each potential partner is assessed according to the characteristics of technological compliance and production capacity. At the next stage, each potential partner is assessed according to the characteristics of the current load and production capacity, and then according to the characteristics of the technological level and production potential. For a comprehensive assessment of each technology partner, the position in the matrices of correspondence, load, efficiency is determined and belongs to one of the selected ten groups. This approach makes it possible to select and propose the main and additional performers for additional investments in the safe development of production systems and the implementation of unique production operations or events. This approach also makes it possible to carry out a sustainable, safe development of production systems in the food industry in crisis conditions of the economy from a scientifically grounded standpoint.

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