4 resultados para Paulette M. Johnson

em Digital Commons at Florida International University


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Women in hospitality organizations are moving up the corporate ladder at a pace significantly outdistancing their colleagues of a few decades ago, but women managers selectively perceive overt and covert discriminatory resistance, from chauvinism to carefully-contrived covert prejudicial treatment constructed to insure a no-win situation. The authors attempted to determine if these discriminatory practices against equally well-trained, qualified, and experienced hospitality women middle managers do affect their perception of their career growth as compared to male counterparts

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We studied the development of leaf characters in two Southeast Asian dipterocarp forest trees under different photosynthetic photon flux densities (PFD) and spectral qualities (red to far-red, R:FR). The two species, Hopea helferi and H. odorata, are taxonomically closely related but differ in their ecological requirements; H. helferi is more drought tolerant and H. odorata more shade tolerant. Seedlings were grown in replicated shadehouse treatments of differing PFD and R:FR. We measured or calculated (1) leaf and tissue thicknesses; (2) mesophyll parenchyma, air space, and lignified tissue volumes; (3) mesophyll air volumes (Vmes/Asurf) and surfaces (Ames/Asurf); (4) palisade cell length and width; (5) chlorophyll/cm2 and a/ b; (6) leaf absorption; and (7) attenuance/absorbance at 652 and 550 nm. These characters varied in response to light conditions in both taxa. Characters were predominantly affected by PFD, and R:FR slightly influenced many characters. Leaf characters of H. odorata were more plastic in response to treatment conditions. Characters were correlated with each other in a complex fashion. Variation in leaf anatomy is most likely a consequence of increasing leaf thickness in both taxa, which may increase mechanical strength and defense against herbivory in more exposed environments. Variation in leaf optical properties was most likely affected by pigment photo-bleaching in treatments of more intense PFD and was not correlated with Amax. The greater plasticity of leaf responses in H. odorata helps explain the acclimation over the range of light conditions encountered by this shade-tolerant taxon. The dense layer of scales on the leaf undersurface and other anatomical characters in H. helferi reduced gas exchange and growth in this drought-tolerant tree.

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The Howard Johnson’s restaurant chain was one of the first franchise success stories in the United States. Climbing in size to be over 1,000 restaurants, the chain today boasts fewer than 30 units. How could such a successful company spiral downward to virtually nothing? This article examines the history of the chain and offers reasons for its success and demise.