2,844 research outputs found
A Model for Understanding the Market Orientation Effects of CRM on the Organizational Process
To build an understanding of the impacts of Customer Relationship Management (CRM) on organizational behaviors and processes this study strives to develop a model of CRM effects on work practice, value-creation processes and organizational performance. Moderating factors that affect the transition results are also studied. The model is developed by iterative steps of content analysis. The objectives of building this model are: 1) to establish a framework with propositions about the chained effects of CRM on organizational performance and the influential management activities and 2) to develop a measurement instrument of the CRM effects on market-oriented behaviors and performance. Although the model testing and enhancement are in progress, the preliminary findings reveal that behavioral changes towards market-orientation can be reflected in two levels of work practice: coordinated intelligence management in the team work and proactive attitude with individuals. With such a market-oriented focus, CRM user organizations are more likely to develop positive market performance as well as process performance, and indirectly bring up financial performance
POSTURAL EFFECTS ON COMPARTMENTAL VOLUME CHANGES OF BREATHING BY OPTOELECTRONIC PLETHYSMOGRAPHY IN HEALTHY SUBJECTS
Breathing pattern was an important factor to affect the performance of sports for athletes. Optoelectronic plethysmography (OEP) was a new method to evaluate breathing pattern by measuring compartmental volume (upper thorax (UT), lower thorax (LT), and abdomen (AB)) freely without limitation. Previous study already investigated the swimmers had better breathing pattern measured by OEP (Karine et al., 2008) in sitting posture. Swimming, such as backstroke, is perfromed in supine posture, but previous study did not consider the postural effect on breathing pattern. This study explored the compartmental volume changes of healthy subjects in different postures
High pressure X-ray preionized TEMA-CO2 laser
The construction of a high-pressure (up to 20 atm) transversely excited CO2 laser using transverse X-ray preionization is described. High pressure operation was found to be greatly improved in comparison to UV-preionized systems. Homogeneous discharges have been achieved in the pressure range 5–20 atm, yielding a specific laser output in the order of 35 J/l
Effects of crossed states on photoluminescence excitation spectroscopy of InAs quantum dots
In this report, the influence of the intrinsic transitions between bound-to-delocalized states (crossed states or quasicontinuous density of electron-hole states) on photoluminescence excitation (PLE) spectra of InAs quantum dots (QDs) was investigated. The InAs QDs were different in size, shape, and number of bound states. Results from the PLE spectroscopy at low temperature and under a high magnetic field (up to 14 T) were compared. Our findings show that the profile of the PLE resonances associated with the bound transitions disintegrated and broadened. This was attributed to the coupling of the localized QD excited states to the crossed states and scattering of longitudinal acoustical (LA) phonons. The degree of spectral linewidth broadening was larger for the excited state in smaller QDs because of the higher crossed joint density of states and scattering rate
Resonance- and Chaos-Assisted Tunneling
We consider dynamical tunneling between two symmetry-related regular islands
that are separated in phase space by a chaotic sea. Such tunneling processes
are dominantly governed by nonlinear resonances, which induce a coupling
mechanism between ``regular'' quantum states within and ``chaotic'' states
outside the islands. By means of a random matrix ansatz for the chaotic part of
the Hamiltonian, one can show that the corresponding coupling matrix element
directly determines the level splitting between the symmetric and the
antisymmetric eigenstates of the pair of islands. We show in detail how this
matrix element can be expressed in terms of elementary classical quantities
that are associated with the resonance. The validity of this theory is
demonstrated with the kicked Harper model.Comment: 25 pages, 5 figure
Compact graphene mode-locked wavelength-tunable erbium-doped fiber lasers: from all anomalous dispersion towards all normal dispersion
Soliton operation and soliton wavelength tuning of erbium-doped fiber lasers
mode locked with atomic layer graphene was experimentally investigated under
various cavity dispersion conditions. It was shown that not only wide range
soliton wavelength tuning but also soltion pulse width variation could be
obtained in the fiber lasers. Our results show that the graphene mode locked
erbium-doped fiber lasers provide a compact, user friendly and low cost
wavelength tunable ultrahsort pulse source
Spintronic properties of one-dimensional electron gas in graphene armchair ribbons
We have investigated, using effective mass approach (EMA), magnetic
properties of a one-dimensional electron gas in graphene armchair ribbons when
the electrons of occupy only the lowest conduction subband. We find that
magnetic properties of the one-dimensional electron gas may depend sensitively
on the width of the ribbon. For ribbon widths , a critical point
separates ferromagnetic and paramagnetic states while for
paramagnetic state is stable ( is an integer and is the length of
the unit cell). These width-dependent properties are a consequence of
eigenstates that have a subtle width-dependent mixture of and
states, and can be understood by examining the wavefunction
overlap that appears in the expression for the many-body exchange self-energy.
Ferromagnetic and paramagnetic states may be used for spintronic purposes.Comment: 5 pages, 6 figure
Dynamic modeling and tracking control of a nonholonomic wheeled mobile manipulator with dual arms
This paper presents methodologies for dynamic modeling and trajectory tracking of a nonholonomic wheeled mobile manipulator (WMM) with dual arms. The complete dynamic model of such a manipulator is easily established using the Lagrange's equation and MATHEMATICA. The structural properties of the overall system along with its subsystems are also well investigated and then exploited in further controller synthesis. The derived model is shown valid by reducing it to agree well with the mobile platform model. In order to solve the path tracking control problem of the wheeled mobile manipulator, a novel kinematic control scheme is proposed to deal with the nonholonomic constraints. With the backstepping technique and the filtered-error method, the nonlinear tracking control laws for the mobile manipulator system are constructed based on the Lyapunov stability theory. The proposed control scheme not only achieves simultaneous trajectory and velocity tracking, but also compensates for the dynamic interactions caused by the motions of the mobile platform and the two onboard manipulators. Simulation results are performed to illustrate the efficacy of the proposed control strategy
Adaptive Robust Self-Balancing and Steering of a Two-Wheeled Human Transportation Vehicle
This paper presents adaptive robust regulation methods for self-balancing and yaw motion of a two-wheeled human transportation vehicle (HTV) with varying payload and system uncertainties. The proposed regulators are aimed at providing consistent driving performance for the HTV with system uncertainties and parameter variations caused by different drivers. By decomposing the overall system into the yaw motion subsystems and the wheeled inverted pendulum, two proposed adaptive robust regulators are synthesized to achieve self-balancing and yaw motion control. Numerical simulations and experimental results on different terrains show that the proposed adaptive robust controllers are capable of achieving satisfactory control actions to steer the vehicle
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