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In this paper, the adaptive genetic algorithm is applied to the auto parts suppliers selection problem, through the empirical analysis, verified by the feasibility and validity of the algorithm to solve such a problem. Firstly, this paper constructs a multi-objective mathematical model for suppliers composition selection, using the linear weighting method to converse this model to a single objective...
Among financial time-series analysis tasks, stock index forecasting has been considered as one of the challenging and difficult tasks. Since an accurate stock index prediction enhances stock market returns, it is highly promising research area and has attracted particular attention. In this paper, to predict stock index with complex and nonlinear characteristics, an automatic structure identification...
Intuitionistic fuzzy sets (IFSs) are used in methods of multi-criteria decision making. Some techniques are used in each method to use intuitionistic fuzzy information. Therefore, crisp methods can be changed to use IFSs information. The latter are used in Technique for order performance by similarity to ideal solution (TOPSIS), Analytic Hierarchy Process (AHP) and in VIKOR. We apply These methods...
This paper proposes a new hybrid Wireless Networks-on-Chip (WNoCs) architecture for multi-core body sensor network (MBSN) applications. Multi-core is a promising design approach that improves system efficiency and application performance at reduced power cost. Since body sensor network (BSN) nodes communicate wirelessly, an efficient multi-core interconnection-architecture requires heterogeneous network...
The aim of this paper is to consider a modification of a block coordinate gradient projection method with Armijo linesearch along the descent direction in which the projection on the feasible set is performed according to a variable non Euclidean metric. The stationarity of the limit points of the resulting scheme has recently been proved under some general assumptions on the generalized gradient...
We comprehensively investigated practical silica-clad photonic crystal waveguides, and found two lattice shifts optimum for low-dispersion slow light. Fabricated device shows a high group index of >50, which ensures twice higher performance than conventional ones.
In view of the existing community network division algorithm without considering the weight and direction of the edge, we propose a novel algorithm in Pervasive Sensing Environment. Based on the node optimal path, the algorithm calculates the optimal path tree of mobile nodes, similarity index and community dispersion index and so on parameters to realize the reasonable division for directed weighted...
In areas such as computer software and hardware, manufacturing systems and transportation, engineers encounter networks with arbitrarily large numbers of isomorphic subprocesses. Parameterized discrete event systems (PDES) provide a framework for modeling such networks. The analysis of PDES is a challenge as some key properties such as nonblocking and deadlock-freedom are undecidable. Previously we...
This paper introduces a self-interference (SI) minimisation technique for amplify and forward (AF) relays. Relays are used to help forward signals between a source and a destination. The AF relay amplifies the signal it receives then transmits it to the destination. Due to imperfect antenna isolation between the receiving and transmitting antennas at both ends of the relay, the transmitted signal...
For academic writing, elaborating an argument particularly addressing an argument strength is important to establish causal relations between sentences. However, when an argument becomes large or complex, elaborating an argument considering the argument strength is difficult. To solve this problem, this article presents a proposal for an argument elaboration support system using a Bayesian network...
The integration pattern of an electric vehicle (EV) fleet usually consists of 4 parameters including arrival time, departure time, state-of-charge and the number of integrations. Though such patterns have been widely studied in the past few years, how the EVs are dispersed in power distribution systems, are not studied yet. However, neglecting the spatial aspect of EV integration is equivalent to...
The aim of collaborative clustering is to reveal the common underlying structures found by different algorithms while analyzing data. The fundamental concept of collaboration is that the clustering algorithms operate locally but collaborate by exchanging information about the local structures found by each algorithm. In this framework, the one purpose of this article is to introduce a new method which...
Three-dimensional (3D) data about forest captured by airborne laser scanning (ALS) have revolutionized forest management planning. Accurate, updated large-scale maps of forest variables produced with low costs today support greatly improved decisions about silvicultural treatments compared to the past practice based on field surveyed data only. These maps usually lack important information about forest...
In this paper break-through results on our 6″ industrial Mercury cells are presented. We gained more than 1% absolute in efficiency by optimizing the processes and design of the cells, resulting in 20.9% cell efficiency. We used standard industrial equipment and the number of process steps similar to our commercial n-Pasha technology. The screen-printed IBC cells can be interconnected by our proven...
During testing of a new contact resistance measurement system (ContactSpot), we observed several unexpected results. TLM theory predicts a linear dependence of the resistance measurements vs probe spacing, and from this data set the contact resistance can be extracted. However, we found a non-linearity at wider probe spacing as well as sensitivities to the magnitude of the current, the direction of...
Previously, an innovative way to reduce rear interface recombination of Cu(In,Ga)(S,Se)2 (CIGSSe) solar cells has been successfully developed. In this work, this concept is established in Cu2(Zn,Sn)(S,Se)4 (CZTSSe) cells, to demonstrate its potential for other thin-film technologies. Therefore, ultra-thin CZTS cells with an Al2O3 rear surface passivation layer having nano-sized point openings are...
Dual-junction solar cells consisting of rear-heterojunction GaInP top cells and back-junction, back-contacted crystalline Si bottom cells were fabricated and characterized. Our calculations show that theoretical efficiencies up to 38.9% can be achieved with Si-based tandem devices. In our experiments, the two subcells were fabricated separately and stacked with an index matching fluid. In contrast...
Achieving high fill factor (FF) for industrial silicon solar cells relies on metallization process through Ag paste. The rheology of the paste has an impact on overall performance because it affects printability. It is reported in this paper that adding different organics to the paste provides ∼0.2% efficiency gain due to decreasing metal coverage. Also, sintering process of Ag particles in the paste...
Dust or soot from the air causes significant losses in the PV modules. Evaluating the performance loss of photovoltaic modules in a location involves collecting data from a fielded PV system. This is usually a time consuming and a costly affair. Hence we propose collection of dust from an area, preferably from the module surface, and use it as dust sample so that the soiling experiments can be conducted...
The problem of imbalance detection in a three-phase power network using a phasor measurement unit (PMU) is considered. In this paper, a general model for the positive sequences is presented based on time-domain PMU measurement at off-nominal frequencies. Then, the detection problem at the control center is formulated as a composite multihypothesis testing framework, in which the goal is to identify...
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