scholarly journals Study on the Sharing Transportation Based on Game Theory

2021 ◽  
Vol 13 (16) ◽  
pp. 9347
Author(s):  
Guanqiao Pan ◽  
Hongchao Jiang ◽  
Qianhui Jin ◽  
Tianyi Zhao ◽  
Jiajun Wang ◽  
...  

In order to solve the problems of mismatch between transportation resources and order volume in logistics transportation, we propose a cooperative pattern called sharing transportation to solve this problems. In this pattern, several logistics enterprises or alliances cooperate with each other and share transportation resources to achieve the goal of reducing costs and increasing income. In this paper, we set the application scene of sharing transportation to the section from the distribution center to the service outlets in the city. We first put forward the judgment function in the analysis model of cooperative pattern, and the possible cooperative pattern is divided into three kinds by constructing and solving the replication dynamic equation. Then we proposed the income allocation model by considering the functions of order quantity and overall income. Moreover, the proposed models are extended to the multi-agent game situation to realize the sharing transportation of multiple enterprises. Finally, we use the example simulation and sensitivity analysis to verify the rationality of the model. This paper provides a new idea for how to integrate the surplus resources to increase the profit in the process of logistics transportation.

2019 ◽  
Vol 44 (3) ◽  
pp. 294-312 ◽  
Author(s):  
Mostafa Rezaei ◽  
Ali Mostafaeipour ◽  
Mohammad Saidi-Mehrabad ◽  
Mojtaba Qolipour ◽  
Ahmad Sedaghat ◽  
...  

The objective of this study was to perform a sensitivity analysis on the factors affecting wind site localization. A case study is selected based on 13 cities in the province of Fars in Iran which is equally applicable in any other wind sites. Then, the cities are ranked using the dual form of the data envelopment analysis model. Next, six criteria are adopted including wind conditions, population, Available Land condition, distance to distribution networks, rate of natural disasters, and the cost of land. In the sensitivity analysis of each criterion, first, the criterion under analysis is omitted from the model, and then the dual model is applied again to obtain a new ranking. Evaluating the results of the ranking for 13 studied cities indicate that the city of Shiraz is just sensitive to the population criterion and fell 11 places in the ranking by omitting this criterion. But the city is insensitive to any other criteria.


Author(s):  
Tengjiao Lin ◽  
Daokun Xie ◽  
Ziran Tan ◽  
Bo Liu

The aim of this paper is to investigate the influence of structure parameters on the vibration characteristics and improve the dynamic performance of marine gearbox. A finite element model was established to solve the dynamic response by using modal superposition method. Based on the theory of multi-objective optimization design, the structure sensitivity analysis model of marine gearbox was established, which takes the structure parameters of the housing as design variables. The modal and response sensitivity was obtained by using the optimal gradient method. According to the results of sensitivity analysis, a modal and response optimization model of marine gearbox was established. The objective was to avoid natural frequencies from the excitation frequencies and minimize the root mean square of vibration acceleration of the evaluating points on the surface of housing. Then the modal optimization and response optimization of gearbox were carried out by using zero-order and first-order optimization method. The results indicate that the dynamic optimization of the gearbox can be achieved. After optimization, the amplitude of vibration acceleration of the evaluating points on the housing surface has been reduced and the resonance of marine gearbox can be avoided.


2019 ◽  
Vol 161 (2) ◽  
pp. 343-347 ◽  
Author(s):  
Grace Baik ◽  
Scott E. Brietzke

Objectives Use decision analysis techniques to assess the potential utility gains/losses and costs of adding bilateral inferior turbinoplasty to tonsillectomy/adenoidectomy (T/A) for the treatment of obstructive sleep-disordered breathing (oSDB) in children. Use sensitivity analysis to explore the key variables in the scenario. Study Design Cost-utility decision analysis model. Setting Hypothetical cohort. Subjects and Methods Computer software (TreeAge Software, Williamstown, Massachusetts) was used to construct a decision analysis model. The model included the possibility of postoperative complications and persistent oSDB after surgery. Baseline clinical and quality-adjusted life year (QALY) parameters were estimated using published data. Cost data were estimated from Centers for Medicare and Medicaid 2018 databases ( www.cms.gov ). Sensitivity analyses were completed to assess for key model parameters. Results The utility analysis of the baseline model favored the addition of turbinoplasty (0.8890 vs 0.8875 overall utility) assuming turbinate hypertrophy was present. Sensitivity analysis indicated the treatment success increase (%) provided by concurrent turbinoplasty was the key parameter in the model. A treatment success increase of 3% of turbinoplasty was the threshold where concurrent turbinoplasty was favored over T/A alone. The incremental cost-effectiveness ratio (ICER) of $27,333/QALY for the baseline model was favorable to the willingness-to-pay threshold of $50,000 to $100,000/QALY for industrialized nations. Conclusions The addition of turbinoplasty for children with turbinate hypertrophy to T/A for the treatment of pediatric oSDB is beneficial from both a utility and cost-benefit analysis standpoint even if the benefits of turbinoplasty are relatively modest.


2012 ◽  
Vol 621 ◽  
pp. 352-355
Author(s):  
Zhong Fu Tan ◽  
Shu Xiang Wang ◽  
Chen Zhang ◽  
Li Qiong Lin ◽  
Yin Hui Zhao

This paper analyses multi influencing factors of energy demand, using energy demand forecast regression model reveals inner relations between each factor and energy demand. Establish simulation model of the relation between GDP, energy intense and energy demand. Under the change in population, urbanization and energy efficiency, this paper gives analysis model of energy demand change.


2021 ◽  
Author(s):  
◽  
Mathew Lee

<p>Historically food has played an important role in how cities are shaped. The modern city is no exception to this, yet it holds an abstracted relationship to the hinterlands that feed it (Steel: 2008), thus giving the perception (particularly in Western cities) that constant food supply to the city is a given right. The problem of feeding cities still remains a challenge (Diamond: 2005), one that, in combination with an ever increasing scarcity of fossil fuels, has led to a emerging tide of urbanism looking to bring localised food back to prominence in the city. More so, investigating building infrastructure to mass produce food in cities themselves: the return to a city state model. A consequence of this is also a move towards a more resource sustainable city framework. However, there is little discussion around how this new food urbanism will be structured within the city, and conversely, how it will structure the city. The most prominent architectural/urban typology which represents food in the city currently is that of the supermarket building, a type which has evolved from the urban market but has shed its civic role (Steel: 2008). This is further characterised by the common use of the private motor vehicle to access the supermarkets site. What if we were to amputate the car from the supermarket? Would we return to the urban market as the defining food space typology in the city? Or would food space be embodied in a new formal language? Primary Research Question(s): How can we track the implications of food (supply, demand, requirements) for the contemporary Western city through a supermarket typology? Secondary Research Questions: How does food culture and its resulting space enhance the urban public sphere (i.e. the vitality of the city)? Methodology Using the analysis model of design (institutionalised/autonomous design process) versus nondesign (overlapping of cultural systems in which design is one of these) laid out by Diana Agrest in 1974 as an analysis departure point; the research will investigate the historical and contemporary role of food markets in cities. The supermarket typology will form the basis for how food exchange related design affects urban fabric build-up in Western cities. Through links in the literature review, as well as empirically based evidence, I draw through extrapolations of how a food market driven city might conduct urban change. This may nurture a more direct relationship to its surrounding geography (e.g. the hinterland) and the food sources needed to feed it. Empirical analysis has been conducted on what might typify a vibrant and civically significant urban market to counteract the research into supermarket typologies. The Queen Victoria Market in Melbourne, Australia, has been selected as this case study. There is an assumption that there are qualities instilled in urban markets which have more positive effects for urban environments than that of supermarkets. Thus, through looking at these environments it may be possible to tease out new directions for solidifying the prominence of food in the city once more.</p>


2014 ◽  
Vol 584-586 ◽  
pp. 439-442
Author(s):  
Lu Wan ◽  
Yu Chen Guo ◽  
Yuan Yi Wei

This paper provided an overview that the city should be designed from the functional, connectivity, accessibility and other aspects of the city considering the current situation of obsolete facility and out of order around the Shanghai West Railway Station. It emphasized that the resources of Shanghai West Railway Station’s Zhenru area shall be integrated while the Zhenru center of Shanghai in Caoyang-street and the railway cargo terminal should be built. It proposed that the city should put emphasize on the development of modern logistics industry along with the construction of business office area, large-scale logistics enterprises gather, hotel service area and low density of cultural facilities.


Symmetry ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 565 ◽  
Author(s):  
Krmac ◽  
Djordjević

Supply Chain Management (SCM) represents an example of a complex multi-stage system. The SCM involves and connects different activities, from customer’s orders to received services, all with the aim of satisfying customers. The evaluation of a particular SCM is a complex problem because of the internally linked hierarchical activities and multiple entities. In this paper, the introduction of a non-radial DEA (Data Envelopment Analysis) model for the evaluation of different components of SCM, primarily in terms of sustainability, is the main contribution. However, in order to confirm the novelty and benefits of this new model in the field of SCM, a literature review of past applications of DEA-based models and methods are also presented. The non-radial DEA model was applied for the selection and evaluation of the environmental efficiency of suppliers considering undesirable inputs and outputs resulting in a better ranking of suppliers. Via perturbation of the data used, behavior, as well as the benefits and weaknesses of the introduced model are presented through sensitivity analysis.


2011 ◽  
Vol 121-126 ◽  
pp. 4764-4769
Author(s):  
Ying Cai Yuan ◽  
Yan Li ◽  
Yi Ming Wang ◽  
Qiang Guo

High velocity and stability are the development trend and inevitable requirement, but the clearance would make the stability of mechanical system deceased, especially in high speed. To the folder mechanism with clearances in high velocity, combined with the definition of sensitivity and the kinematics analysis, the kinematics sensitivity analysis model is derived by the matrix analysis method. Through the sensitivity analysis model, it can be easy to get the relationship of the design variables and the mechanism’s robustness, which provides the base to design the folder mechanism in high velocity.


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