4,682 research outputs found
Development of a new brushless doubly-fed doubly-salient machine for wind power generation
published_or_final_versio
Phase Diagram Of The Biham-Middleton-Levine Traffic Model In Three Dimensions
We study numerically the behavior of the Biham-Middleton-Levine traffic model
in three dimensions. Our extensive numerical simulations show that the phase
diagram for this model in three dimensions is markedly different from that in
one and two dimensions. In addition to the full speed moving as well as the
completely jamming phases, whose respective average asymptotic car speeds
equal one and zero, we observe an extensive region of car densities with
a low but non-zero average asymptotic car speed. The transition from this
extensive low average asymptotic car speed region to the completely jamming
region is at least second order. We argue that this low speed region is a
result of the formation of a spatially-limited-extended percolating cluster.
Thus, this low speed phase is present in dimensional
Biham-Middleton-Levine model as well.Comment: Minor clarifications, 1 figure adde
Relation Between Quantum Speed Limits And Metrics On U(n)
Recently, Chau [Quant. Inform. & Comp. 11, 721 (2011)] found a family of
metrics and pseudo-metrics on -dimensional unitary operators that can be
interpreted as the minimum resources (given by certain tight quantum speed
limit bounds) needed to transform one unitary operator to another. This result
is closely related to the weighted -norm on . Here we
generalize this finding by showing that every weighted -norm on
with 1\le p \le \limitingp induces a metric and a
pseudo-metric on -dimensional unitary operators with quantum
information-theoretic meanings related to certain tight quantum speed limit
bounds. Besides, we investigate how far the correspondence between the
existence of metrics and pseudo-metrics of this type and the quantum speed
limits can go.Comment: minor amendments, 6 pages, to appear in J.Phys.
Relationship and Contract Issues of IT Outsourcing – Descriptive Case Studies in China Regions
In spite of the continuous increase in IT outsourcing activities globally, a major percentage of outsourcing deals failed or suffered from serious problems. In China regions where IT outsourcing practice is still at its initial stage, the situation is even serious: there lacks systematic guidance in terms of how to negotiate decent contracts and how to develop sound relationships. In view of this, the current research develops a research framework based on the theories in Economics, Management and Marketing fields, and investigates the effects of both relationship and contract on IT outsourcing success. To support the research framework, evidence was collected from two descriptive case studies conducted in Hong Kong and Mainland China. The case analysis implies the dimensionalities of relationship and contract. What is more, IT outsourcing success is mainly evaluated from the technological benefits client company could gain. A significant contribution of this study to theory is to look into IT outsourcing phenomenon with a balanced view and through an integrated theoretical lens. For practitioners, this research removes executives’ doubts about simultaneously employing both relationship (soft side) and contract (hard side) as governance mechanisms in managing IT outsourcing deals
Simultaneous multiwavelength study of the reaction of phenolphthalein with sodium hydroxide
A photodiode array (PDA) spectrophotometer was used to study the
fading reaction of phenolpthalein in dilute sodium hydroxide
solution. The principal component analysis (PCA) method was
employed to identify the number of light absorbing species in the
kinetics system. The target factor analysis (TFA) procedure,
coupled with the Broyden-Fletcher-Goldfard-Shanno (BFGS)
optimization method, was applied to the observed data to deduce the
rate constants and the concentration-time profile of the reaction. The
internal referencing method was shown to be essential in improving
the quality of data obtained by a single beam PDA
spectrophotomer
Multi-Agent Modeling in Managing Six Sigma Projects
In this paper, a multi-agent model is proposed for considering the human resources factor in decision making in relation to the six sigma project. The proposed multi-agent system is expected to increase the acccuracy of project prioritization and to stabilize the human resources service level. A simulation of the proposed multi- agent model is conducted. The results show that a multi-agent model which takes into consideration human resources when making decisions about project selection and project team formation is important in enabling efficient and effective project management. The multi-agent modeling approach provides an alternative approach for improving communication and the autonomy of six sigma projects in business organizations
Multi-Agent Modeling in Managing Six Sigma Projects
In this paper, a multi-agent model is proposed for considering the human resources factor in decision making in relation to the six sigma project. The proposed multi-agent system is expected to increase the acccuracy of project prioritization and to stabilize the human resources service level. A simulation of the proposed multi- agent model is conducted. The results show that a multi-agent model which takes into consideration human resources when making decisions about project selection and project team formation is important in enabling efficient and effective project management. The multi-agent modeling approach provides an alternative approach for improving communication and the autonomy of six sigma projects in business organizations
TO USE A TREE OR A FOREST IN BEHAVIORAL INTENTION
Cloud computing is a new technology that has been applied to education and has e nabled the development of cloud computing classrooms; however, student behavioral intentions toward cloud computing remain unclear. Most researchers have evaluated, integrated, or compared few (1 to 3) theories to examine user behavioral intentions and few have addressed additional theories or models. In this study, we test, compare, and unify six well -known theories, namely, service quality (SQ), self - efficacy (SE), the motivational model (MM), technology acceptance model (TAM), theory of reason action (TRA)/theory of planned behavior (TPB), and innovation diffusion theory (IDT) in the context of cloud computing classrooms. This empirical study was conducted using an online survey. The data collected from the samples (n=478) were analyzed using structural equation modeling. We independently analyzed each of the six theories, formulating a united model. The analysis yielded three valuable findings. First, comparing the explained variance and degree of freedom (df) difference, yielded the following ranking in explained variance: MM=TAM\u3eIDT\u3eTPB\u3eSE=SQ (equal =; superior to\u3e). Second, comparing the explained variance yielded the following ranking in explained variance: MM\u3eTAM\u3eIDT\u3eTPB\u3eSE=SQ. Third, based on the united model of six theories, some factors significantly affect behavioral intention and others do not. The implications of this study are critical for both researchers and practitioners
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