4,797 research outputs found

    Virtual Leadership: Required Competencies for Effective Leaders

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    There are countless books, articles, and resources available which attempt to identify the competencies and qualities of effective leaders. Traditionally, leaders have been at the center of a community, be it work, church, or social groups. In these communities, face-to-face meetings and close personal interaction have dominated the way leaders interact with their members. However, with the advent of the internet and the host of communication tools that followed, teams today are becoming increasingly dispersed and diverse. Studies are now being done to understand how leadership has or should evolve in order to meet the changing needs and demands of these new and different communities. Some argue that leadership in the virtual environment is simpler as fewer tools are available to virtual leaders. Others may argue that access to fewer tools makes virtual leadership more complex and challenging than traditional leadership. This paper will explore leadership in virtual settings and how it’s changing as more teams move away from traditional team environments. I’ll review the responsibilities and roles of virtual leaders in an effort to better highlight the core competencies needed in today’s virtual settings. I’ll also look at competencies required of global virtual leaders and I’ll address how these competencies can be cultivated to ensure leaders are more effective in leading teams in these new environments

    Workplace Accommodations for People Living with Multiple Sclerosis

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    This brochure is one of a series on human resources practices and workplace accommodations for persons with disabilities edited by Susanne M. Bruyère, Ph.D., CRC, Director, Employment and Disability Institute, Cornell University ILR School. This brochure was developed in 2001 for Cornell University by Kurt L. Johnson, Ph.D., CRC., co-Principal Investigator for the University of Washington Rehabilitation Research and Training Center on Multiple Sclerosis. He reviewed and updated it in 2010. It recieved legal review in in 2011 by Beth Reiter, an independent legal consultant, Ithaca, N.Y., with assistance from Sara Furguson, a Cornell University Employment and Disability Institute student research assistant

    Theclinae of Rondonia, Brazil: Gigantorubra and Angulopis : with descriptions of new species (Lepidoptera: Lycaenidae)

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    The species of Gigantombra and Angulopis encountered in the Caca ulandia area of central Rondonia, Brazil, are reviewed. These include ten species (all new) of Gigantombra (G. microserrata, G. dl:vergens, G. quadramacula, G. ampla, G. fuscafascia, G. silva, G. rondonia, G. obscura, G. pelplexa, G. pUlpura) and one new species of Angulo pis (A. tenuis). Thecla sangala Hewitson (1868) is recognized as having priority over Theela autoelea Hewitson (1863-1878 [1877]), new synonym. Rondonia continues to appear as a center ofthecline endemism and to provide abundant examples of sibling species diversity

    Theclinae of Rondonia, Brazil: Strymon Hübner : with descriptions of new species (Lepidoptera: Lycaenidae)

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    Twenty-two species of Strymon are known from the vicinity of Cacaulandia in Rondonia, Brazil, of which 14 are new species. These belong to 5 species groups: the "oreala" group [Strymon megarus (Godart)]; the "ziba" group [Strymon ziba (Hewitson), Strymon thulia (Hewitson), Strymon spinatus new species, Strymon latamaculus new species, Strymon pallidulus new species, Stlymon tholus new species]; "valentina" group [Strymon rotundum new species]; "crossoea" group [Strymon crossoea (Hewitson), Strymon crambusa (Hewitson), Stlymon germana new species, Strymon novasignum new species, Strymon clavus new species, Strymon implexus new species, Strymon inmirum new species, Strymon incanus new species, Strymon faunalia (Hewitson), Strymon halos new species, Strymon conspergus new species, Strymon bazochii (Godart), Strymon diagonalis new species]; and "eurytulus" group [Strymon bubastus (Stoll)]. Tentative subgroups of species are suggested for the "crossoea" group as they occur in Rondonia. A neotype is designated for Tmolus basilides and the name synonymized with Strymon megarus. The "basilides" group of Johnson et al. (1990) is renamed the "ziba" group. Based on lectotype designations and superficial and genital differences, S. ziba and S. thu.lia are elevated to specific status

    A New Elfin Butterfly (Lycaenidae: Eumaeini) from Northern China with Comments on the Nomenclature of Palaearctic Elfins

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    Ahlbergia hsui, new species, is described from two specimens recently collected in China’s Nan Shan area of endemism located along the boundary of northern China with Mongolia. In discussing the new species, the historical literature concerning Palaearctic elfin butterflies is reviewed and compared to nomenclatorial usages in D’Abrera’s widely disseminated 1993 treatment of Palaearctic butterflies; 25 errors or omissions in the latter treatment are corrected

    A Revision of the South American Hairstreak Butterfly Genera \u3ci\u3eTergissima\u3c/i\u3e and \u3ci\u3eFemniterga\u3c/i\u3e (Lycaenidae: Theclinae)

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    Tergissima Johnson and Femniterga Johnson, originally described from four sympatric south-central Andean species, are revised to include, respectively, four and nine South American species (of which six are previously undescribed). New combinations include Femniterga cissusa (Hewitson), F. cinniana (Hewitson) and F. plumans (Druce), all transferred from Thecla; new species include Tergissima montanensis and T. shargeli, and Femniterga itaituba, F. megana, F. splendida and F. strobilata. A lectotype is designated for Thecla cissusa. Femniterga and Tergissima are part of a largely undescribed eumaeine assemblage also including Calycopis Scudder and Calystryma Field

    Estimating impervious surfaces from a small urban watershed in Baton Rouge, Louisiana, using LANDSAT thematic mapper imagery

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    Many urban areas are using estimations of impervious surfaces as a means for better environmental management. This is because research over the last two decades indicate a consistent, inverse relationship between the percentage of impervious surfaces in a watershed and the environmental problems urban areas are experiencing. Although various methods for estimating impervious surfaces can be identified, few result in accurate and defensible estimations by which environmental problems can be assessed. This is especially important to rapidly expanding urban areas such as Baton Rouge, Louisiana where detailed records and planimetric data are lacking. Numerous studies have shown a potential for estimating impervious surfaces using remotely sensed satellite imagery however, none were performed in a sub-tropical geographical area such as southern Louisiana. Three different dates of Landsat TM multi-spectral imagery, corresponding to seasonal differences, were acquired for land cover type classification purposes. Seasonal dates of imagery were used to determine tree canopy effects and the optimum season for estimating impervious surfaces from satellite imagery. Unique to this study, the derived classified estimates were compared to an impervious surfaces reference estimate developed from high resolution, true color aerial photography. The impervious surfaces reference estimate was developed by digitizing over 15,000 polygons of impervious features throughout the watershed such as roads, buildings, and parking lots. Statistical evaluation of the seasonal classified images included the error matrix analysis, Kappa analysis (both overall and conditional), and the Pair-Wise Z test statistic. Results obtained in this research indicate overall accuracies of the derived classified estimates ranged between 75.33 percent and 81.33 percent while differing from the reference estimate by 10 percent or less

    Competitive Advantage for Multiple-Memory Strategies in an Artificial Market

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    We consider a simple binary market model containing NN competitive agents. The novel feature of our model is that it incorporates the tendency shown by traders to look for patterns in past price movements over multiple time scales, i.e. {\em multiple memory-lengths}. In the regime where these memory-lengths are all small, the average winnings per agent exceed those obtained for either (1) a pure population where all agents have equal memory-length, or (2) a mixed population comprising sub-populations of equal-memory agents with each sub-population having a different memory-length. Agents who consistently play strategies of a given memory-length, are found to win more on average -- switching between strategies with different memory lengths incurs an effective penalty, while switching between strategies of equal memory does not. Agents employing short-memory strategies can outperform agents using long-memory strategies, even in the regime where an equal-memory system would have favored the use of long-memory strategies. Using the many-body `Crowd-Anticrowd' theory, we obtain analytic expressions which are in good agreement with the observed numerical results. In the context of financial markets, our results suggest that multiple-memory agents have a better chance of identifying price patterns of unknown length and hence will typically have higher winnings.Comment: Talk to be given at the SPIE conference on Econophysics and Finance, in the International Symposium 'Fluctuations and Noise', 23-26 May 2005 in Austin, Texa

    Acomodos en el lugar de trabajo para personas que viven con esclerosis múltiple

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    Este folleto es uno de una serie sobre prácticas de recursos humanos y acomodos en el lugar de trabajo para personas con discapacidades editada por Susanne M. Bruyère, Ph.D., CRC, Directora, Employment and Disability Institute, Cornell University ILR School. Este folleto fue elaborado en el año 2001 para la Universidad de Cornell por Kurt L. Johnson, Ph.D., CRC., Coinvestigador Principal para el Centro de Investigación y Capacitación en Rehabilitación de la Esclerosis Múltiple de la Universidad de Washington. Lo revisó y actualizó en el año 2010. Recibió una revisión desde la perspectiva legal en el 2011 por Beth Reiter, consultora legal independiente de Ithaca, Nueva York, con la asistencia de Sara Furguson, estudiante y asistente de investigación del Employment and Disability Institute de la Universidad de Cornell
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