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In the article the game-theoretic model of limited resource extraction by competitive enterprises in terms of differential non-zero sum games is considered. The Nash equilibrium is found and the cooperative variant of the game investigated, the Shapley value constructed and its dynamic stability (time-consistency) investigated. As the results of this work were found the conditions on the input parameters...
Fraud and abuse are two factors directly related to high health care costs, since they correspond to expenses that can be eliminated without prejudice to the quality of services provided. In Brazil, the health insurance companies implement a claim authorization process which assists in the detection of fraud and abuse. This process consists of a prior analysis of the services requested by providers,...
The article describes the options of passive detection of Unmanned Aerial Systems (UAS), which are not a subject of the X supplement published by Civil Aviation Authority of the Czech Republic. The beginning of the article contains analysis of basic UAS characteristics in acoustic area. In this part some systems for UAS detection using acoustic methods are mentioned. The following part of the article...
Since their introduction, automated storage and retrieval systems (AS/RS) give a better solution for the inventory management in industrial companies and distribution centres to improve theirs performances. The main objective of the paper is to offer a performance comparison between two kinds of AS/RS (Free-Fall flow-rack and classic flow-rack), to highlight the benefits of using FF-flow-rack AS/RS...
In this paper, a new model based on Data Envelopment Analysis (DEA) and Inverse Data Envelopment Analysis (IDEA) is presented for estimating the effect of electricity on the output of industrial companies. To this end, the effect of electricity deviation, which serves as one input that can influence a manufacturing company's final product, is evaluated. Intuitively, it is known that a direct relationship...
This paper examines the relationship between accounting conservatism, debt covenants, and information asymmetry around the global financial crisis. This relationship plays a pivotal role to understand the interactive behavior of accounting and economic data which influencing the agency problem and information asymmetry. Data of non-financial companies listed at the Pakistan Stock Exchange is used,...
Internet marketing is a system of new marketing media system that has been common to be used nowadays by the micro, small, and medium enterprises (SMEs), which is considered to fulfill customer's needs and building relationship or engagement with the customer and also can make a wider market or even globally, resulting in a profit for the company, However, the dynamics of the customer user behavior...
In this paper, we consider a real-life heterogeneous fleet vehicle routing problem for retail construction material stores. A modified cluster first-route second algorithm is deployed to fit a real-life problem. In cluster first, the clusters of customers compatible with vehicle capacity are grouped together. In route second, the mathematical model is developed and solved by General Algebraic Modeling...
Our research studies the harvest plan for aromatic coconut for the aromatic coconut manufacturers located in Ratchaburi province, Thailand. The supply planning is complex because there are many uncertain factors. For example, the number of coconuts in each crop is varied and depends on the season, water amount, soil fertility and pests. In addition, coconut price at farm gate is highly fluctuated...
This case study was conducted at a company engaged in the processing of palm oil into Crude Palm Oil (CPO). During this time, the company's factory is not operating effectively and efficiently. The production planning in the company is done with estimation that based on past demand. But the estimation made less effective because the companies are often faced with some situations such as incompatibility...
Employees in companies can be divided into different social communities, and those who frequently socialize with each other are treated as close friends and will be grouped in the same community. In the enterprise context, a large amount of information about the employees is available in both (1) offline company internal sources and (2) online enterprise social networks (ESNs). What's more, each of...
This manuscript investigates the effect of new investments on the locational marginal prices in the main interconnected system of Oman. The study includes modeling the existing transmission network and simulating system performance during peak period. In addition, the effect of renewable energy projects on locational marginal prices are simulated.
This manuscript presents a case study to determine the optimal location and size of photovoltaic systems in an electric distribution networks using particle swarm optimization (PSO) such that network voltage profile is improved and losses are minimized. The distribution network of Masirah Island, Oman, is considered as a case study system. The test system is modeled and simulated using MATLAB load...
Voltage sag has become one of the major power quality concerns in recent years. To accurately evaluate the voltage sag, it is necessary to obtain its sag type. In this paper, a more generalized voltage sag classification method with consideration of phase shift is proposed compared to the traditional classification method. This new method can be used in the accurate discrimination of sag types. Moreover,...
The technical state evaluation of Vehicle Equipment is a necessary step to operate and support. Considered conditions such as technical characters, operate environments and support elements, this paperresearches its technical state cluster, which is based on BIC(Schwarz's Bayesian Criterion). The conclusion reveals that BIC is accurate and concise to cluster the technical state of vehicle equipment.
This paper proposes a constraint-free model and a budget-constrained model to determine the optimal air travel policy in terms of the seat upgrading. The approach strikes a balance between cost-saving and the boosted productivity by upgrading the employees to higher classes. We specify a benefit function based on the Hensher Equation's core idea and leverage economics assumptions of the marginal productivity...
Recently, due to the popularity of Web 2.0, considerable attention has been paid to the opinion leader discovery in social network. By identifying the opinion leaders, companies or governments can manipulate the selling or guiding public opinion, respectively. Additionally, detecting the influential comments is able to understand the source and trend of public opinion formation. However, mining opinion...
We construct a two-echelon supply chain with one supplier and two retailers. Revenue sharing contract and lateral transshipment are considered in the discussed supply chain. We present a game model, and study how lateral transshipment under revenue sharing contract affects retailers' inventory choices and supply chain profit. Retailers choose their inventory levels by considering the possibility of...
When some agents in the supply chain are failure, the whole supply chain may be influenced. This paper presents a framework for identifying vulnerable agents in supply chain network. The framework consists of three main components: supply chain dynamic network, risk transmission model, and identifying vulnerable nodes. The supply chain dynamic network component consists of constructing the supply...
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