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The novel theory of investment portfolio optimization under uncertainty is presented based on fuzzy set theory and efficient forecasing methods. The direct problem of fuzzy portfolio optimization and dual problem are considered. In the direct problem structure of a portfolio is determined which provides the maximum profitableness at the given risk level. In dual problem the portfolio structure is...
In the nowadays highly unstable manufacturing market, companies are faced, on a daily basis, with important strategic decisions, such as “does the company has the necessary capacity to accept a high volume order?” or “what measures need to be implemented if the product demand increases x% a year?”. Decision-makers, i.e. company's managers, rely on their experience and insights supported by classical...
Turntables continue to be manufactured and sold today, although in small numbers. Some audiophiles still prefer the sound of vinyl records over that of digital music sources and are ready to pay for high end gramophone systems. We pre-sent here a tonearm constructed so that its rotating cartridge is always nearly tan-gent to the record's groove the stylus is reading thus greatly reducing the anti-skating...
This paper discusses the application of Open Space Technology as a human swarm methodology and explores options for optimization. Open Space Technology, a self-organizing style of meeting, was applied by Hyland Software as an exercise in distributed problem solving with regards to the function of the company. Two applications by Hyland Software were observed, one with topical guidance and one without,...
Assets in transmission systems are maintained according to the time-based strategy. But assets importance for the availability of the grid is neglected which means the allocation of maintenance expenditures may be inefficient. This paper introduces an optimization model which is able to improve the reliability of a transmission system as well as expenditures for maintenance and replacement. It is...
Active system control, real time control and active system management are some of the new concepts the water utilities are investigating as a way of improving asset energy usage. The assets under most scrutiny are those with high energy burdens such as pumps and blowers. Fuzzy logic, genetic algorithms and artificial neural networks are an increasing form of control employed within software systems...
It is a serious problem of tax evasion in all domains. Because of the narrow human factors, there are case-by-case basis not to examine reported tax cases. Hence, it is a very demanding challenge to grow an effective tax evasion detection mechanism. In this paper, we use the proposed rule extractor approaches (PFHRCNN) to detect tax evasion. The experiment results show the proposed PFHRCNN for tax...
Due to the proliferation of plug-in hybrid electric vehicles (PHEVs), the peak load in the power grid is expected to increase in future. The peak load can be reduced by implementing appropriate load scheduling schemes using advanced metering infrastructure (AMI) and smart chargers. In this paper, we formulate the charging problem of PHEVs as a potential game to jointly optimize the cost of the utility...
In restructured power systems, the transmission and distribution grids are autonomously utilized by independent system operator (ISO) and distribution companies (DISCOs), respectively. As the operating condition of one grid influences the decisions made by operators of other grids, the ISO and DISCOs should collaborate and cooperate with each other in order to operate the entire power system in a...
Modern process plants are becoming more and more complex with high demands placed on design, engineering and operation. Throughout the life cycle of process plants, there is always the typical conflict involving costs, time and quality. One way of resolving this conflict is to employ simulation technology as it can be used to answer questions relating to engineering and operation earlier and with...
The continuous change in the manufacturing world is demanding more flexible, responsive and accurate planning tools, which are able to assist the decision-makers to take tactical and strategic decisions on short notice with a high level of confidence. For this purpose, these tools should dynamically explore different operative scenarios in the planning procedure and produce information about key performance...
Demand side management has attracted a lot of attention as a method to regulate customer behavior and improve system reliability. In this paper, we solve the day-ahead energy pricing problem in the distribution electricity system by taking into account the fact that customers can change their consumption behavior in response to price changes. We propose two pricing models under two different scenarios...
The paper focuses on the optimization of containers pre- and end-haulage by road in intermodal terminals, which is one of the most critical factors in door to door transport effectiveness and profit. We present an optimization model that allows solving in an exact and optimal way the vehicle routing and fleet management problems. The model comprises two steps: first it optimizes the distance traveled...
Plug-in electric vehicles (PEVs) are becoming increasingly popular because of the environmental and economic benefits. However, high penetration of PEVs may overload the distribution network. In this paper, we propose a decentralized PWM-based algorithm to coordinate PEV charging. We first formulate the PEVs charging coordination problem as an optimization problem, with the objective to flatten the...
The business control system of SCF is based on the technology of “credit binding” between the core enterprise and small and medium enterprises (SMEs) in the supply chain. The new control system allows the business to cover all enterprises in the supply chain. In this paper, We refer to the concept of “business flow” in supply chain which regarded as a complex network, and consider the “overall crediting”...
Due to the rapid development of logistics industry, the customer need to send more and more small items, and manpower and resources are limited which are provided by logistics companies for the customer, therefor when customers sent items to logistics department need to wait in line, If the time waiting in queue more than the longest waiting time that customer can tolerate, customers will choose other...
Turnover rate has been concerned by operators of e-commerce websites and remained at a relatively low level, so how to improve turnover rate has become an important and urgent issue to e-commerce websites. We thoroughly analyzed touch points between e-commerce enterprises and consumers, and proposed an E-commerce Communication Model (ECM), which consisted of three stages and two paths. Driven strategies...
Nowadays the growing attention to environmental issues has produced a higher interest on the transport service energy consumption. The main objective of this article is to explain the development phase of a driver advisory system (DAS) for public transportation, thus enhancing the energy effectiveness driving of trams and busses. The basis of energy consumption reduction is the control and management...
The paper argues that an optimization of product development processes can be achieved through detailed description of the relationships in the product model as well as the relationships in the design and production process. This is especially true under rapidly changing market conditions when the design process is not only determined by the design task but by constant outside change requests that...
Pressure of emerging countries, environmental protection and industrial companies' interests are pushing European companies towards new trends and paradigms such as sustainable manufacturing. Sustainability is now considered a strategic must-have and it can enable a profitability in the long run. One way to pursue sustainability is to implement a product life cycle approach, especially in the capital...
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