The optimal control of just-in-time-based production and distribution systems and performance comparisons with optimized pull systems

2011 ◽  
Vol 213 (1) ◽  
pp. 124-133 ◽  
Author(s):  
Katsuhisa Ohno
Keyword(s):  
Optimal Control ◽  
Distribution Systems ◽  
Just In Time ◽  
Production And Distribution ◽  
Pull Systems ◽  
And Performance ◽  
Performance Comparisons

scholarly journals Cross-Docking Operations for Supply Chain Logistics in JIT Production and Distribution Systems

1970 ◽  
Vol 8 (1-2) ◽  
pp. 219-230
Author(s):  
Gyan Bahadur Thapa ◽  
Tanka Nath Dhamala ◽  
Shankar Raj Pant
Keyword(s):  
Supply Chain ◽  
Distribution Systems ◽  
Operation Time ◽  
Just In Time ◽  
Sequencing Problem ◽  
Supply Chain Logistics ◽  
Research Areas ◽  
Cross Docking ◽  
Production And Distribution ◽  
Multi Level

The multi-level production problem is one of the challenging research areas in supply chain management. We present brief literature review and mathematical models of multi-level just-in-time sequencing problem with a view of cross-docking approach for supply chain logistics. Describing cross-docking operations, we propose a mathematical model for the cross-docking supply chain logistics problem to minimize the operation time as truck sequencing problem. We establish a proposition as the synthesis of the production and logistics.Key Words: Just-in-time; Supply chain; Logistics; Cross-dock; Operation timeDOI: http://dx.doi.org/10.3126/jie.v8i1-2.5114Journal of the Institute of Engineering Vol. 8, No. 1&2, 2010/2011Page: 219-230Uploaded Date: 20 July, 2011

scholarly journals Less than half of the European dietary recommendations for fish consumption are satisfied by national seafood supplies

2021 ◽  
Author(s):  
Anneli Lofstedt ◽  
Baukje de Roos ◽  
Paul G. Fernandes
Keyword(s):  
Fish Consumption ◽  
Food Systems ◽  
Distribution Systems ◽  
Production Systems ◽  
National Level ◽  
Dietary Recommendations ◽  
Balance Sheets ◽  
Health Authorities ◽  
Production And Distribution ◽  
Per Capita

Abstract Purpose To review the seafood dietary recommendations of European countries and compare them to national seafood supplies. Methods Current seafood dietary recommendations were collated from national health authorities across Europe. Food balance sheets were downloaded from the FAO, and appropriate conversion factors were applied to each seafood commodity. Average net per capita seafood supplies from 2007 to 2017 were derived from data on imports and production for food from both capture fisheries and aquaculture, accounting for exports. Results Both national dietary recommendations and seafood supplies varied considerably throughout Europe. At a national level, on a per capita basis, only 13 out of the 31 of European dietary recommendations for fish consumption were satisfied by national seafood supplies. Most of the countries with coastal access, as well as those with traditional fish-eating cultures, such as France and countries in Northern Europe, had adequate seafood supplies to meet their recommendations. The landlocked countries of Central and Eastern Europe did not have enough seafood supplies to satisfy their recommendations. Conclusions Our findings emphasise the need to not only consider consumer health outcomes when developing and advocating dietary recommendations, but also the sustainability of food production systems. As many foods are not necessarily locally sourced but traded as part of global production and distribution systems, it is important to consider greater consistency between national dietary recommendations to facilitate more sustainable marine food systems.

scholarly journals The zooarchaeological identification of a ‘Morisco’ community after the Christian conquest of Granada (Spain, early 16th century): sociocultural continuities and economic innovations

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
Marcos García-García ◽  
Guillermo García-Contreras ◽  
Michelle M. Alexander ◽  
Rowena Y. Banerjea ◽  
Aleks Pluskowski
Keyword(s):  
Middle Ages ◽  
Distribution Systems ◽  
Construction Materials ◽  
Meat Products ◽  
Early Modern Period ◽  
16Th Century ◽  
Existing Structures ◽  
Production And Distribution ◽  
Surrounding Landscape ◽  
The Middle Ages

AbstractThis article presents the results of the zooarchaeological analysis of an assemblage dating to the second quarter of the 16th century that was discovered on the current university campus of Cartuja, on the outskirts of Granada (Andalusia, Spain). During the Middle Ages, this area was largely used for agricultural purposes, including as estates owned by high officials of the Nasrid dynasty, the last Islamicate polity in the Iberian Peninsula. The Castilian conquest of Granada in 1492 brought significant changes to the area, with the construction of a Carthusian monastery and the transformation of the surrounding landscape, including changes in property structures, different agrarian regimes and the demolition of pre-existing structures. Among these transformations was the filling up of a well with construction materials, and its further use as a rubbish dump. This fill yielded an interesting and unique zooarchaeological assemblage, the study of which is presented here. The results advance our understanding of changing patterns in animal consumption during the formative transition from the Middle Ages to the Early Modern period at the heart of the former Nasrid Kingdom of Granada, and indicate the continuity of some Andalusi consumption patterns along with specialised production and distribution systems of meat products that have no archaeological precedent in the region, suggesting that the bones were dumped by a possible ‘Morisco’ community (autochthonous Muslims forced to convert to Christianity in 1502).

scholarly journals Sectorization for Water Distribution Systems with Multiple Sources: A Performance Indices Comparison

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 131
Author(s):  
Jezabel D. Bianchotti ◽  
Melina Denardi ◽  
Mario Castro-Gama ◽  
Gabriel D. Puccini
Keyword(s):  
Distribution Systems ◽  
Water Distribution ◽  
Distribution Networks ◽  
Performance Criteria ◽  
Performance Indices ◽  
Multiple Sources ◽  
Multiobjective Problems ◽  
Open Questions ◽  
Minimum Number ◽  
And Performance

Sectorization is an effective technique for reducing the complexities of analyzing and managing of water systems. The resulting sectors, called district metering areas (DMAs), are expected to meet some requirements and performance criteria such as minimum number of intervention, pressure uniformity, similarity of demands, water quality and number of districts. An efficient methodology to achieve all these requirements together and the proper choice of a criteria governing the sectorization is one of the open questions about optimal DMAs design. This question is addressed in this research by highlighting the advantages of three different criteria when applied to real-word water distribution networks (WDNs). To this, here it is presented a two-stage approach for optimal design of DMAs. The first stage, the clustering of the system, is based on a Louvain-type greedy algorithm for the generalized modularity maximization. The second stage, the physical dividing of the system, is stated as a two-objective optimization problem that utilises the SMOSA version of simulated annealing for multiobjective problems. One objective is the number of isolation valves whereas for the second objective three different performance indices (PIs) are analyzed and compared: (a) standard deviation, (b) Gini coefficient and (c) loss of resilience. The methodology is applied to two real case studies where the first two PIs are optimized to address similar demands among DMAs. The results demonstrate that the proposed method is effective for sectorization into independent DMAs with similar demands. Surprisingly, it found that for the real studied systems, loss of resilience achieves better performance for each district in terms of pressure uniformity and demand similarity than the other two specific performance criteria.

scholarly journals Coordinated Optimal Control of PV Inverters and HVAC Loads in Distribution Systems

2021 ◽  
Author(s):  
Naveen Kumar Kodanda Pani ◽  
Linquan Bai ◽  
Yaosuo Xue ◽  
Long Cheng
Keyword(s):  
Optimal Control ◽  
Distribution Systems

Optimal Control of a General Environmental Space

1986 ◽  
Vol 108 (4) ◽  
pp. 330-339 ◽  
Author(s):  
M. A. Townsend ◽  
D. B. Cherchas ◽  
A. Abdelmessih
Keyword(s):  
Optimal Control ◽  
Maximum Principle ◽  
Moisture Content ◽  
Control Strategies ◽  
Switching Control ◽  
The Maximum Principle ◽  
Environmental Space ◽  
And Performance

This study considers the optimal control of dry bulb temperature and moisture content in a single zone, to be accomplished in such a way as to be implementable in any zone of a multi-zone system. Optimality is determined in terms of appropriate cost and performance functions and subject to practical limits using the maximum principle. Several candidate optimal control strategies are investigated. It is shown that a bang-bang switching control which is theoretically periodic is a least cost practical control. In addition, specific attributes of this class of problem are explored.

Design and Performance of an Advanced Communication Network for Future Active Distribution Systems

2018 ◽  
Vol 144 (3) ◽  
pp. 04018019 ◽  
Author(s):  
Francisco Martins Portelinha Júnior ◽  
Antonio Carlos Zambroni de Souza ◽  
Paulo Fernando Ribeiro ◽  
Denisson Queiroz Oliveira ◽  
Bruno de Nadai Nascimento
Keyword(s):  
Communication Network ◽  
Distribution Systems ◽  
And Performance
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