Tung‐Zong Chang
A5019109190- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Customer Service Quality and Loyalty
- Technology Adoption and User Behaviour
- Nuclear physics research studies
- Digital Marketing and Social Media
- Consumer Behavior in Brand Consumption and Identification
- Environmental Sustainability in Business
- Consumer Market Behavior and Pricing
- Consumer Retail Behavior Studies
- Diverse Aspects of Tourism Research
- Quantum, superfluid, helium dynamics
- Atomic and Subatomic Physics Research
- Environmental Education and Sustainability
- Organizational Leadership and Management Strategies
- Quality and Supply Management
- Cruise Tourism Development and Management
- Innovation and Knowledge Management
- Financial Markets and Investment Strategies
- Particle Accelerators and Free-Electron Lasers
- Corporate Finance and Governance
- Nuclear Physics and Applications
- Business Strategy and Innovation
- Innovation Diffusion and Forecasting
Metropolitan State University of Denver
1999-2023
Ling Tung University
2008-2023
Institute of Physics, Academia Sinica
2023
University of Illinois Urbana-Champaign
1999-2012
New Mexico State University
1998-2009
University of Illinois System
2003-2005
University of Glasgow
2005
Oak Ridge National Laboratory
2004
Rutgers, The State University of New Jersey
2002-2003
University of Maryland, College Park
2001-2002
The ratio of the electric and magnetic form factors proton, GEp/GMp, was measured at Thomas Jefferson National Accelerator Facility (JLab) using recoil polarization technique. is directly proportional to transverse longitudinal components proton in elastic $\vec ep \to e\vec p$ reaction. new data presented this article span range 3.5 < Q2 5.6 GeV2 are well described by a linear fit. Also, QF2p/F1p reaches constant value above Q2=2 GeV2.
The authors explore the relationships among market orientation, service quality and business profitability. Based on an empirical study of Taiwan’s security brokerage industry, research results show that there are positive associations three constructs. More market‐oriented firms seem to enjoy superior perceptions greater Further examinations reveal orientation has a stronger effect than Also, quality‐profitability linkage is orientation‐profitability linkage. suggest intermediate factor in...
We present measurements of the ratio proton elastic electromagnetic form factors, μpGEp/GMp. The Jefferson Lab Hall A Focal Plane Polarimeter was used to determine longitudinal and transverse components recoil polarization in ep scattering; these is proportional two factors. These data reproduce observation Jones et al. [Phys. Rev. Lett. 84, 1398 (2000)], that factor decreases significantly from unity above Q2=1GeV2.Received 29 May 2001DOI:https://doi.org/10.1103/PhysRevC.64.038202©2001...
Since early 1990s, tremendous growth of e‐commerce has transformed the world retail infrastructure rapidly. Although Internet burst between 2000 and 2002 which slowed down rage in financial market, continues to grow becomes an integral part market strategic portfolio for many organizations. In order be successful niche, retailers engage business model reengineering keep up with changes how customers acquire goods services. Based on in‐depth interviews a follow‐up survey, present study...
Precise measurements of the proton electromagnetic form factor ratio $R = \mu_p G_E^p/G_M^p$ using polarization transfer method at Jefferson Lab have revolutionized understanding nucleon structure by revealing strong decrease $R$ with momentum $Q^2$ for $Q^2 \gtrsim 1$ GeV$^2$, in disagreement previous extractions from cross section measurements. In particular, results exposed limits applicability one-photon-exchange approximation and highlighted role quark orbital angular structure. The...
Souvenir shopping is an integral component of one’s travel experience, and may represent a significant proportion overall expenditure. The aim this study to examine the relationships between motivations, souvenir shopping, experience; specifically, how motivations affect influences experience. A conceptual model presented describe their interrelationships, which explains role in tourism management. Based on survey Chinese tourists Macau, are found correlate with perceived importance....
Due to the wide availability of Internet, online surveys have become a mainstream data collection method and offer new-found opportunities in market research. However, there are inherent weaknesses associated with surveys. A case study is used illustrate how carefully devised strategy sample specification selection, processing, screening, editing can boost quality survey data. Reliability measures compared between paper versions newly developed scale consumer attitudes toward environmental...
A precise measurement of the ratios Drell-Yan cross section per nucleon for an 800 GeV/c proton beam incident on Be, Fe, and W targets is reported. The behavior at small target-parton momentum fraction well described by existing fit to shadowing observed in deep-inelastic scattering. cross-section as a function incident-parton set tight limits energy loss quarks passing through cold nucleus.Received 27 May 1999DOI:https://doi.org/10.1103/PhysRevLett.83.2304©1999 American Physical Society
The Drell-Yan cross section ratios, σ(p+d)/σ(p+p), measured in Fermilab E866, have led to the first determination of d¯(x)/ū(x), d¯(x)−ū(x), and integral d¯(x)−ū(x) for proton over range 0.02<~x<~0.345. E866 results are compared with predictions based on parton distribution functions various theoretical models. relationship between NMC measurement Gottfried is discussed. agreement models employing virtual mesons indicates that these non-perturbative processes play an important role origin...
We report a measurement of the angular distributions Drell-Yan dimuons produced using an 800 GeV/c proton beam on deuterium target. The muon in dilepton rest frame have been measured over kinematic range 4.5<m{mu mu}<15 GeV/c{2}, 0<p{T}<4 GeV/c, and 0<x{F}<0.8. No significant cos2phi dependence is found these proton-induced data, contrast with situation for pion-induced data. data are compared expectations from models which attribute distribution to QCD vacuum effect or presence...
Abstract Macau tourism relies heavily on the casino-related economy. To balance and stabilize its portfolio, it is imperative to explore alternative revenues diversify offerings. Souvenir shopping one of undertapped areas. Existing research has paid little attention contribution significance souvenir Macau's industry. The present study examines how can be employed into portfolio suggests ways market products various tourist segments. results from a survey demonstrate an integral part used...
We report a measurement of the angular distributions Drell-Yan dimuons produced using an $800\text{ }\text{ }\mathrm{GeV}/c$ proton beam on hydrogen target. The polar and azimuthal distribution parameters have been extracted over kinematic range $4.5<{m}_{\ensuremath{\mu}\ensuremath{\mu}}<15\text{ }\mathrm{GeV}/{c}^{2}$ (excluding $\ensuremath{\Upsilon}$ resonance region), $0<{p}_{T}<4\text{ }\mathrm{GeV}/c$, $0<{x}_{F}<0.8$. $p+p$ are similar to those $p+d$, both data sets...
Purpose The purpose of this study is to examine how one's social media use during travel, connect and/or update, related selected personal values among Generation Z. Hypotheses are proposed based on two common dimensions: openness-to-change and self-enhancement. Design/methodology/approach A survey was conducted using existing self-developed scales with 177 college students, a group Chinese Gen Zers, at public higher education institution in Macao, China. Findings Results show that community...
We present measurements of the recoil proton polarization for d(γ→,p→)n reaction at θc.m.=90° photon energies up to 2.4 GeV. These are first data in this transfer with circularly polarized photons. The induced py vanishes above 1 GeV, contrary meson-baryon model expectations, which resonances lead large polarizations. However, Cx does not vanish inconsistent hadron helicity conservation. Thus, we show that scaling behavior observed d(γ,p)n cross sections is a result perturbative QCD. should...
The use of price in subjective product quality evaluations is influenced by the nature and availability other information. Empirical investigation this proposition indicated that utilization as a cue diminished relation to quantity intrinsic attribute However, for one two products investigated influence reversed when large amount information was provided. © 1996 John Wiley & Sons, Inc.
Cross-section values for Compton scattering on the proton were measured at 25 kinematic settings over range s=5–11 and −t=2–7 GeV2 with a statistical accuracy of few percent. The scaling power s dependence cross section fixed center-of-mass angle was found to be 8.0±0.2, strongly inconsistent prediction perturbative QCD. observed cross-section are in fair agreement calculations using handbag mechanism, which external photons couple single quark.Received 29 January...
Evidence for a flavor asymmetry between the $\overline{u}$ and $\overline{d}$ quark distributions in proton has been found deep-inelastic scattering Drell-Yan experiments. The pronounced dependence of this on $x$ (fraction nucleon momentum carried by partons) observed Fermilab E866 experiment suggested drop $\overline{d}(x)/\overline{u}(x)$ ratio $x>0.15$ region. We report results from SeaQuest E906 with improved statistical precision large region up to $x=0.45$ using 120 GeV beam. Two...
Explores the effect of market orientation on operating effectiveness and cost efficiency using data drawn from automotive distribution channels in Finland Poland. The results indicate that is positively associated with measures such as service quality overall customer level. Market also has a positive influence efficiency, productivity sales per employee. In addition, profitability were highly efficiency. Additional analysis suggests greater effectiveness, quality, Poland, less‐developed...
We have measured the differential cross section for $\ensuremath{\gamma}n\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}p$ and $\ensuremath{\gamma}p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}n$ reactions at ${\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}=90\ifmmode^\circ\else\textdegree\fi{}$ in photon energy range from 1.1 to 5.5 GeV Jefferson Lab (JLab). The data ${E}_{\ensuremath{\gamma}}\ensuremath{\gtrsim}3.3\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$ exhibit a global scaling...
The differential cross section for the gamma +n --> pi- + p and pi+ n processes were measured at Jefferson Lab. photon energies ranged from 1.1 to 5.5 GeV, corresponding center-of-mass 1.7 3.4 GeV. pion angles varied 50 degree 110 degree. photoproduction data both exhibit a global scaling behavior high transverse momenta, consistent with constituent counting rule prediction existing data. suggest possible substructure of behavior, which might be oscillations around value. show an enhancement...
We present measurements of the recoil proton polarization for 1H(→γ,→p)π0 reaction θπc.m.=60°–135° and photon energies up to 4.1 GeV. These are first data in this transfer with circularly polarized photons. Various theoretical models compared results. No evidence hadron helicity conservation is observed. Models that employ factorization not favored. It appears from strong angular dependence induced at 2.5 3.1 GeV a relatively high spin resonance or background amplitude might exist energy...
We present measurements of the polarization J/psi produced in 800-GeV proton interactions with a copper target. Polarization is sensitive to ccmacr; production and hadronization processes. A longitudinal observed at large x(F), while small x(F) state essentially unpolarized or slightly transversely polarized. No significant variation versus p(T).
We present a measurement of the polarization observed for bottomonium states produced in p−Cu collisions at √s=38.8GeV. The angular distribution decay dimuons Υ(1S) state shows no small values fractional longitudinal momentum xF and transverse pT but significant positive production either pT>1.8GeV/c or xF>0.35. Υ(2S+3S) (unresolved) show large all measured. These observations challenge NRQCD calculations expected hadronic states.Received 7 November...