Wansheng Tang

Wansheng Tang
Tianjin University | tju · Institute of Systems Engineering

PhD

About

273
Publications
32,043
Reads
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4,946
Citations
Introduction
Wansheng Tang currently works at the Institute of Systems Engineering, Tianjin University. Wansheng does research in Control Systems Engineering, Supply chain management and Applied Mathematics. Their current project is 'Supply Chain; Marketing Channels'.
Additional affiliations
June 1998 - present
Tianjin University
Position
  • Professor

Publications

Publications (273)
Article
The shore power available in ports has a low utilization rate, though its use is an effective way to reduce pollution emissions. Encouraging shipping companies to use shore power has become an important issue in green port construction. This paper builds a Nash game between two shipping companies regarding the decision to use shore power and analyz...
Article
Full-text available
Empty containers need to be repositioned from a surplus area to a shortage area, and the resulting economies of scope mean that the canvassing (i.e., the sale of transportation service) of two routes back and forth is no longer isolated. To study the liner company’s canvassing strategy for round-trip routes, this paper considers a benchmark situati...
Article
Full-text available
This paper investigates the strategic sourcing choice of an original equipment manufacturer (OEM) in the presence of contract manufacturer (CM) encroachment and reliability improvement. In the absence of CM encroachment, the OEM prefers dual sourcing when the fixed ordering cost is small. In contrast, faced with CM encroachment, the OEM may switch...
Article
We study a supply chain in which a supplier with encroachment capability and quantity-based cost decline sells through a retailer with demand information advantage. By solving a signaling game, we find that cost decline increases the possibility of order distortion. The obtained results also show that without encroachment, both supply chain members...
Article
Uncertainty in market demand can lead to excess inventory, and the resulting inventory risk has led to different inventory strategies to distribute the risk. There are three inventory strategies: push strategy, pull strategy, and “prebook+at-once” strategy, depending on whether the inventory risk is borne by one or both of the supplier or manufactu...
Article
In this paper, we study an OEM’s sourcing strategy choice in the presence of a competitive CM selling its own-brand product and a noncompetitive CM with limited capacity. Two cases are discussed: facing two heterogeneous CMs, the OEM could source from the competitive CM (case SC), or the noncompetitive CM and assist it to expand capacity (case LN)....
Article
An alliance allows liner companies to expand service scope but deprives them of unique route advantages. Facing fierce service competition, liner companies with heterogeneous price levels have different preferences on whether to join the alliance and whether a specific route is covered. This paper considers service competition between two liner com...
Article
As consumption has increased, the abundance of many second-hand goods has become a thorny problem for consumers, while the improper disposal of used goods poses a considerable threat to the environment. To achieve better recycling of second-hand goods, an increasing number of second-hand trading platform owners have emerged. In this paper, we devel...
Article
We consider a firm producing and selling experience products over two periods with private quality information. Consumers strategically decide their purchasing timing driven by the imitation effect, and the firm chooses pricing policy (dynamic or preannounced) and equilibrium type (separating or pooling, through which true quality information is re...
Article
Nowadays, the growing global concerns about sustainable issues have placed high pressure on firms to improve production technology and reduce energy consumption. However, firm’s incentive may be weakened due to high costs. The government has recognized the firms’ predicament and provided financial support to incentivize them to improve technology....
Article
Full-text available
With aging over time, perishable items with fixed shelf lives, can be differentiated by their ages. The age which reflects the quality level of the item can directly affect consumers’ willingness to pay, and then affect the consumer demand. Therefore, we consider that consumers’ sensitivity to item’s age is heterogeneous, which can induce price dif...
Article
Recent free-floating platforms offer service to consumers via a sharing model that can substantially increases the service’s circulation and utilization. This paper examines the optimal investment strategy in product quality, input quantity, and dynamic advertising for a free-floating sharing platform that owns a durable product and leases it to co...
Article
Purpose Without proper treatment, waste cooking oil (WCO) will bring serious environmental and health hazards, which can be effectively alleviated by converting it into biofuel. Subsidies from the government usually play a significant role in encouraging recycling activities and supporting sustainable supply chain. This paper aims to quantitatively...
Article
Full-text available
With the recent emergence of cloud computing and big data technologies, collection of consumers’ information is widespread. Retailers use consumers’ purchase history and consumptive habits data to price discriminate between current and new, high-cost and low-cost consumers. We investigate behavior-based pricing (BBP) and consumers cost-based pricin...
Article
Full-text available
When outsourcing human resource activities to a vendor, a firm with limited effort may want to save energy to focus on core competencies. However, the firm could also lose control over these activities by outsourcing, especially in a situation with unobservable action, and this could in turn increase cost. In this paper, we consider a firm with lim...
Article
Multi-modal transportation, as a highly efficient approach, can economize many intermediate links in the supply chain and save social operating costs. However, at present, multi-modal transportation accounts for only a small portion of the total traffic volume, and there are few multi-modal carriers. To analyze the incentives of ocean shipping comp...
Article
Full-text available
To unveil how a manager’s outside option affects managerial compensation contracts and environmental strategies in polluting industries, this article studies an agency problem in which a risk-averse manager has private information about his ability and type-dependent outside option. A compensation contract is designed to incentivise the manager to...
Article
This work considers a dual-channel supply chain in which a manufacturer sells an experience product through its retailer and directly to consumers. The market potential is stochastic, and the two agents receive different signals about its value. The manufacturer invests in product's quality, and this investment cannot be observed by the retailer. W...
Article
This paper considers manufacturer encroachment with the cost reduction decision under either asymmetric or symmetric demand information. By solving a signaling game, we find that encroachment motivates the manufacturer to invest more in cost reduction if and only if the direct selling channel is relatively efficient. Furthermore, both members benef...
Article
Full-text available
The stochastic demand and the uncertain supply/yield are common marketing operation risks. To solve these risks, firms usually apply quantity postponement strategy or price postponement strategy to improve supply chain performance. In this paper, we consider a firm’s two-stage decisions model where the firm needs to make the price decision and the...
Article
Full-text available
Product recall has been a widespread practical operation risk in the production outsourcing. To remit even avoid product recall risk, this paper considers a two-echelon supply chain where the original equipment manufacturer (OEM) orders a critical component from one or two contract manufacturers (CMs) and uses it to produce finished product with po...
Article
Full-text available
The emergence and rapid development of large-sized retail outlets creates opportunities for dominant retailers to align with the businesses in the supply chain, in which they have previously never been involved. When facing a vulnerable incumbent retailer and a dominant entrant retailer, which one should the supplier choose to align with? To addres...
Article
Reference price plays a significant role in in uencing purchase decisions of customers. Due to loss aversion, the asymmetric reference price effect on market demand should be taken into account. This paper develops a joint dynamic pricing and production model with asymmetric reference price effect. In a finite planning horizon, the demand rate is t...
Article
This paper develops game-theoretic models to study a procurement strategy problem faced by an e-retailer selling products online under different logistics distribution systems. The e-retailer can purchase products directly from a manufacturer under its own brand or indirectly from a brand-name company and then deliver the products to consumers thro...
Article
In the shipping market, the transportation of cargo back and forth over two routes is not independent because empty container repositioning (ECR) from a surplus port to a deficit port may occur. To solve canvassing problems with ECR, we study a sea-cargo supply chain in which a liner company and a forwarder provide transportation services between t...
Article
Considering the difficulties of modeling, online-measurement of residual soda and Baume degree indexes, and optimal control in pulp washing process, a data-driven operational-pattern optimization method for pulp washing process was proposed in this paper. Firstly, it described the basic concepts about data-driven operational-pattern for pulp washin...
Article
The liquid level of multi-disk filter tank is an important influence parameter in the process of white water recovery of multi-disk filter, but the liquid level control exists the problems of nonlinear and time delay, the liquid level detection value fluctuates caused by rotary action of the filter discs, conventional PID control is difficult to ac...
Article
This paper considers a liner company that docks at one of two heterogeneous ports and selects either business cooperation or port investment. The results demonstrate that port investment always makes the port better off but may be detrimental for the liner company. Interestingly, when the liner company reaches a port investment agreement with one p...
Article
When procuring from a manufacturer (she) with random yield, the retailer (he) is often reluctant to share the risk caused by this yield, while the manufacturer is not. However, if the manufacturer possesses private productivity information, the retailer may change his decision. To capture the interaction between risk-sharing and asymmetric informat...
Article
Differential pressure control of dryer condensate discharge is of great significance for reducing energy consumption of the drying section and improving the quality of the paper. Aiming at drawbacks that PID control does not meet the natural law of dryer draining off water and fuzzy PID control has a certain adaptation limit, fuzzy immune PID contr...
Conference Paper
Speedy development of the large-sized retail outlets empowers the emergence of dominant retailers, as a result of power transformation from suppliers to retailers. In this paper, we model a market comprised of a dominant entrant retailer, a weaker incumbent counterpart, and a common supplier from which both retailers source products. The retailers...
Article
With the aid of two-controller design technique and particle swarm optimization(PSO) algorithm, a two-degree-of-freedom(TDF) internal model control(IMC) method based on PSO algorithm was proposed, which was suitable for large time delay process. The basic idea of this method was illustrated as follows: taking integral time absolute error(ITAE) as t...
Article
Waste cooking oil without proper treatment brings serious environmental and health hazards, which can be mitigated by converting waste cooking oil into bio-fuel. In a supply chain of waste cooking oil recycling, an independent recycler collects waste cooking oil and trades with a bio-firm who carries out conversion to produce bio-fuel and then get...
Article
This paper develops a differential game in a two-player supply chain with sticky price where a manufacturer provides a cooperative advertising program for a retailer. The manufacturer sets the wholesale price while the retailer decides the order quantity and advertising level. Either of the players has two behavioral choices: Myopia and farsightedn...
Article
Based on the characteristics of multivariable, strong coupling in CD basis weight control system,multivariable decoupling control strategy for cross-direction basis weight of papermaking process was proposed in this paper.In view of the correlation matrix is high dimensional,non square matrix and large scale sparse matrix, block matrix method and m...
Article
The dramatic development of large retail outlets has transferred the dominant power from suppliers to retailers, who possess more plentiful and more accurate information in order to take preemptive action. To better understand the issue of information dissemination in the presence of a dominant retailer, we model a market comprising such a dominant...
Article
Full-text available
This paper considers a supply chain in which an original equipment manufacturer (OEM) outsources her production to a contract manufacturer (CM). For the product’s component, the OEM can either control the component procurement (i.e., control strategy), or delegate this work to the CM (i.e., delegation strategy). Meanwhile, they have different disco...
Article
This paper deals with R&D investment and technology licensing in a supply chain formed of an original equipment manufacturer (OEM) and a contract manufacturer (CM). The R&D is conducted by the CM and the OEM agrees to pay a share of the cost. At the R&D stage, we assume that there are some uncertainties both in terms of performance of the developed...
Article
The increasing environmental awareness and green demands drive channel members to jointly take efforts to improve energy efficiency level of products. Considering the cost learning effect, this work develops a differential game model where the retailer (leader) sets retail margin, the manufacturer (follower) determines wholesale price and they join...
Article
The differential pressure of dryer inlet and outlet which isusually in a fluctuating state, is an important parameter indicating whether the dryer has accumulated water, Generally, the control strategy is use PID control algorithm to keep it in a specific value. The nonuniform drainage of the dryer results the differential pressure of dryer inlet a...
Article
Full-text available
To investigate the effect of employees’ job satisfaction on the firm’s workforce planning, this paper builds a multi-period uncertain workforce planning model with job satisfaction level, where the labor demands and operation costs are characterized as uncertain variables. The job satisfaction level is defined as the employees’ psychological satisf...
Article
For the purpose of reducing energy consumption of paper machine drying section, the method of optimizing the parameters for ventilation system based on improved genetic algorithm was put forward. The energy consumption model of paper machine drying section was established and by using the improved genetic algorithm, the exhaust temperature, exhaust...
Article
Energy consumption reduction is becoming focus in papermaking industry. To further reduce energy consumption and increase energy efficiency of paper machine dryer section, the synergic control for energy consumption was put forward. The energy consumptions of steam condensate thermal system and hood ventilation thermal system were considered togeth...
Article
To study ocean carriers’ canvassing strategies, we consider a sea cargo service chain where liner companies canvass using two strategies involving freight forwarders and non-vessel-operating common carriers (NVOCCs). This paper uses a principal-agent model to describe the relationships among these partners. We show that high capacity can encourage...
Article
Full-text available
This paper addresses the channel coordination problem in a green supply chain consisting of a manufacturer and a retailer, in which the manufacturer controls green innovation and wholes price, while the retailer controls sales price. Pricing and green innovation strategies in integrated and decentralized channels are computed and compared, and a tw...
Article
In order to achieve superior energy-saving performance of products, both the upstream and downstream firms in a green supply chain intend to form R&D (Research and Development) collaborations. This paper analyzes via a game-theoretical approach two typical cooperative behaviors, Cartelization and Cost-sharing contract, of the two chain members. Com...
Article
This paper studies a dynamic recruitment problem with enterprise performance in the uncertain environment, in which a firm first interviews finite job applicants sequentially and then makes an employment decision according to results of the interview. Since the assessment of the firm about each interviewee’s capability is subjective and the intervi...
Article
Supply chain contracts are widely considered as useful and necessary tools to guide and restrict channel members' behaviors. Considering the effect of dynamic advertising, we investigate two distinct types of contracts between a dominant retailer and her manufacturer. One contract is a traditional wholesale price contract and the other is a consign...
Article
This article studies a problem of joint pricing and dynamic product quality investment with consumers' reference quality effect under the existence of quality inflation. Optimal control models are constructed to maximize the total profit with a limited quality investment capacity, where the demand is sensitive to historical product quality level. T...
Article
Full-text available
This paper studies a model of on-the-job search and savings under reference-dependent preferences that implies loss aversion in a worker's consumption behaviors. The model analyzes how loss aversion affects the worker's consumption decisions in job search. The results demonstrate that the presence of loss aversion will lead to a set of high steady-...
Article
Full-text available
This paper investigates a wage mechanism design problem faced by a risk neutral firm (he) who employs a risk averse worker (she) to sell products for him. The effort levels of both the rm and the worker are unobservable to each other, which results in bilateral moral hazard. The firm offers a wage contract menu to the worker with the objective of m...
Article
This article studies an equilibrium search problem when jobs provided by firms can be either unskilled or skilled and when workers differing in their education level can be either low-educated or high-educated. The structure proportion of jobs affects the equilibrium which indicates a threshold that can distinguish whether the equilibrium is separa...
Article
Based on the introduction of the process of displacement cooking, the key points and difficulties of the control system of displacement cooking were analyzed. Aiming to control the temperature difference between the upper part and the bottom of the digester, the temperature and flow cascade control strategy based on the PSO (Particle Swarm Optimiza...
Article
Aiming to the difficulty of Kappa value online measurement in displacement cooking, this paper proposed a data-driven method to online predict Kappa value in displacement cooking. Based on the analysis of the features of displacement cooking process, an online prediction frame of Kappa value in displacement cooking based on data-driven was proposed...
Article
Since fractional order PID inherits the advantages of traditional PID and has better control quality and higher robust, a fractional order PID controller based on artificial neural network was proposed and applied in pulp consistency control system. Using fractional order PID instead of the traditional PID, a self-tuning PID controller with five co...
Article
Aiming at the difficulties of eliminating flow leanning in displacement digester system based on the analysis of cooking process and plug flow, this paper proposed a method to prevent flow leaning by changing inflow way and destroying channels to keep the liquor flow as near plug flow during cooking. © 2016, China National Pulp and Paper Research I...
Article
Energy efficiency (EE) level has become an essential environmental index of products and can be improved by EE innovation. With consideration of EE level evolution and market differentiation, an optimal control model under a two-market framework is proposed to investigate EE innovation and two-stage pricing strategies. Impacts of consumer environme...
Article
Aiming at the difficulty of on-line measurement of beating degree, the measurement model of beating degree was established based on the actual measured data by support vector machine algorithm. The data exchange channel between the MATLAB and WINCC was built by using the OPC technology, the goal of measuring the beating degree on-line was realized....
Article
The use of potentially hazardous materials has been aroused wide concerns in the world. In order to reduce the hazard of these potentially hazardous materials, some non-profit organizations (NPOs) devote to the substitution of potentially hazardous materials. This paper studies a potentially hazardous material substitution problem in a bi-level dec...
Article
Aiming at the difficulties of eliminating cavitation of the discharge pump of displacement digester system, this paper proposed a method from the view of control to keep the NPSHa was greater than its NPSHr in the discharging process by stabilizing pulp concentration, adjusting pump speed and injecting compressed air into the digester. © 2016, Chin...
Article
Aiming at the problem of high specific steam consumption of tissue paper machine, the supply air temperature of the air hood ventilation system in dryer section were optimized. Firstly, a mathematical model for analyzing the influence of supply air temperature on drying energy consumption was established, then it was optimized by using the PSO algo...
Article
Aiming at the difficulties of eliminating temperature difference in the displacement digester, this paper proposed a new method for measuring temperature based on the traditional digester temperature measurements. With combining neural network control, PID cascade control and decoupling control, a neural network PID cascade decoupling control syste...
Article
Consider a bilateral monopoly supply chain where a manufacturer distributes a durable product through a retailer to end consumers. This paper develops a differential game in which the manufacturer determines the advertising and the wholesale price while the retailer sets the retail price. Channel members are partially myopic when they only consider...
Article
The twinflo_43 refiner operation in a paper production line taken as the main control object. The DCS was built based on S7-400PLC, Profibus-DP and internet. The goal of completely auto-controlling was achieved. The application results indicated that this system achieved shorter feeding time, faster tuning speed, smaller overshoot, and the disc bla...
Article
Consumers are susceptible to reference price effects when they make purchase decisions for a certain product. Meanwhile, the sales price and advertisement are the determinable factors that have impact on consumers’ reference price which are also fundamental marketing strategies. Therefore, how to determine an appropriate sales price and advertising...
Article
Web inspection of high speed paper machine requires processing a large amount of image data and real-time reacting. Based on the technology of FPGA (Field Programmable Gate Array) and CCD (Charge-coupled Device) linear array camera, this paper introduced a high speed web inspection system. Taking advantage of parallelism and high speed calculating...
Article
To improve the traditional drying technology of wet synthetic leather, a new drying scheme of combining cylinder drying and hot air drying in the wet synthetic leather was put forward. This scheme uses the steam generated from the combined heat and power (CHP) in functional industrial park to replace the heat conducting oil in the hot air heating p...
Article
This paper investigates a distribution channel consisting of a manufacturer and a retailer under a cooperative program, where the manufacturer determines the national advertising and quality improving effort, while the retailer decides the local promotion effort and may undertake parts of the costs of national advertising and quality improving of t...
Article
This paper addresses a joint pricing, preservation technology investment, replenishment cycle and dynamic service investment problem for deteriorating items under a common resource constraint with respect to preservation technology and service investments. The evolution of service level is considered to characterize the indirect positive effect of...
Article
To minimize costs, a buying firm would seek sources which offer a more affordable price for the required products. On the basis of a principal-agent framework, this paper presents a buyer's supplier switching model under asymmetric information to minimize the buying cost considering the volume-dependent switching cost, the competitive reactions and...
Article
Full-text available
This paper studies a consumer search model with prospect utility in a hybrid uncertain environment. Hybrid uncertainty consists of the uncertainty of the consumer’s valuation for each product and the randomness of stockout. An optimal search strategy is designed for the consumer to search or buy a product. The results show that the presence of pros...
Article
A joint dynamic pricing and production problem for perishable products without shortages is considered. The demand rate is price-dependent and time-varying. This paper constructs an optimal control model to maximize the total profit under a general nonlinear production cost function. The feature of the optimal joint dynamic pricing and production p...
Article
Environmental issues are receiving significant attention from the public, accelerating the development of green supply chain in operations management. This study focuses on the green supply chain performance in a single manufacturer-retailer setup, in which the manufacturer determines energy efficiency level and wholesale price, while the retailer...
Article
Full-text available
This paper develops an advertising model in which goodwill affected by advertising effort has a positive effect on reference price and market demand. In a finite planning horizon, the optimal advertising strategy is provided by solving the optimization problem on the basis of Pontryagin’s maximum principle, then the optimal sales price is obtained...
Article
The control system of cross-directional basis weight is a complicated,non-square and multi-variate system. It's difficult to be controlled satisfyingly owing to the property of high-dimension, strong-coupling and long-lag. The multivariable inner-model controller was designed to solve the above problem by setting the mathematical model of this proc...
Article
This paper presents a new method of using a multi-output data fusion from a laser displacement sensor (LDS) to reduce vibration error for online noncontact paper board thickness measurement. A data-in-data-out fusion model for the thickness measuring was proposed. And a revised clustering method for fusing the canner gap data was presented. An EMD...
Article
This paper considers a problem of determining the optimal dynamic pricing strategy and replenishment cycle for non-instantaneous deteriorating items, where the consumer demand depends on the sales price and the quantity of the items displayed in the store. For the given replenishment cycle, we derive the optimal dynamic pricing strategy by applying...
Article
Aimed at the paper machine cross directional basis weight control system, the problems of obtaining basis weight data and controlling output data transmission were analyzed. The host computer software was designed by using Visual Basic software as the development tool. The data exchange between machine direction control system and cross direction c...
Article
Kappa number model based on offline data can not be updated with the pulping process changes. By combining rolling window with recursive partial least squares (PLS), a new adaptive Kappa number model was proposed in the paper. In order to determine the supplementary variables for modeling instrumental, the pulping process and the factors influencin...
Article
Advertising and dynamic pricing play key roles in maximizing profit of a firm. In this paper a joint dynamic pricing and advertising problem for perishable products is investigated, where the time-varying demand rate is decreasing in sales price and increasing in goodwill. A dynamic optimization model is proposed to maximize total profit by setting...
Article
To investigate how the loss averse customer’s psychological satisfaction affects the company’s furniture production planning, we establish a furniture production planning model under uncertain environment, where customer demand and production costs are characterized by mutually independent uncertain variables. Based on prospect theory, customer’s p...
Article
The stock approach system of domestic high speed tissue paper machines and the configuration of measuring and control points were specified. Considering the tissue basis weight control feature of the machine, the stock approach control scheme was presented based on Fuzzy-PID combined control algorithm. The application results indicated that the pro...
Article
In connection with denoising of the measure data in paper cross direction basis weight control, an improved threshold wavelet method was presented after analyzing the character of the data, and simulation comparison analysis was carried out. It was shown that this method was better than the traditional methods. The wave profile after denoising was...
Article
This paper considers a supply chain contract design problem, in which a buyer purchases a batch of products from a supplier and then sells it to consumers. The product quality with a continuous type is the supplier’s private information and cannot be observed by the buyer. Furthermore, three strategies, named inspection, price rebate and effort, ar...
Article
Full-text available
This paper considers the joint dynamic pricing and inventory control policy for a stochastic inventory system with perishable products. The inventory system, with random disturbance, is modelled as a continuous-time stochastic differential equation. Combined dynamic pricing and production control, a stochastic dynamic optimisation problem that maxi...
Article
In this paper, we consider a joint pricing and dynamic production policy for perishable items without shortages. A unimodal time-varying demand function is assumed to be convex nonincreasing in sales price. We propose a dynamic optimization model to maximize total profit by allocating a limited production capacity and setting a suitable sales price...
Article
Full-text available
A problem that often arises in the recruitment process is that the recruitment firms face possible loss of candidates. The loss of candidates can induce a loss cost to firms which need to restart the recruitment process. In this article, we model the recruitment process as a discrete-time stochastic optimal stopping problem with a finite planning h...
Article
The paper rolls are often packed manually after rewinding. Manually packing paper rolls is low efficiency and high laborcost and has security risk. Most of paper mills are seeking ways of increasing productivity and reducing labor costin the paper roll packing process. In order to realize packing head placing and packing paper roll automatically, A...
Article
Full-text available
This paper studies the problem of supply chain pricing and coordination with markdown policy in the presence of conspicuous consumption. A two-period pricing model is proposed to investigate the effect of conspicuous consumption on pricing decisions with markdown pricing policy for a supply chain that consists of a manufacturer and retailer. The op...
Article
As conventional noise removal methods were not able to meet the requirement of higher performance cross-directional basis weight control, a new method based on EMD was proposed. The method achieved noise removal by removing the high-frequency component and moving average filter based on time scale features and adaptability of EMD. The simulation re...
Article
In recent years, many advanced intelligent algorithms are used to establish Kappa number soft measurement model of cooking endpoint, and those algorithms are difficult to programming on the industry controller. This paper proposed a new soft measurement design: Advanced algorithms could be realized by MATLAB software, so soft measurement model coul...