359 research outputs found
measurements using lifetime tags at LEP
No full text/ measurements by Aleph , Delphi , and Opal using life- time tags are reviewed. These measurements currently dominate the world average value of
Final luminosity systematic errors for 1995 Electroweak selection and revised systematic errors for 1993 and 1994 Electroweak selections
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A Measurement of Using Multiple Tags
No full textA new measurement of with the ALEPH detector at LEP using five mutually exclusive hemisphere tags is presented. The preliminary result is R_bR_b = 0.2158 \pm 0.0009 (stat.) \pm 0.0011 (syst.)$
The effect of octopamine, body size, and ovarian development on caste-characteristic behavior in the facultatively eusocial and solitary bees Megalopta (Hymenoptera: Halictidae)
No full textIn eusocial species, workers forfeit their ability to reproduce in order to assist the queen in raising offspring. In the facultatively eusocial and solitary bee, Megalopta genalis, queens recruit workers by aggressively dominating their daughters. However, the neurobiological mechanism that underlies this behavior and the emergence of new social phenotypes has not been studied. I observed the effect of the biogenic amine, octopamine (OA), on caste-characteristic aggression in queens, workers, and solitary foundresses, using a circle tube apparatus. Additionally, I compared the effects of body size and ovarian development on behavior in social and solitary females. Although OA did not have a significant effect, I found that in social pairs, a bee’s behavior predicted its partner’s when these interactions were worker-like. Furthermore, data shows that ovarian development, but not head size, predicted caste-characteristic behavior in workers, while the opposite was true for solitaries; larger head size, but not ovary size, was associated with queen-like behavior. These findings support the hypothesis that queens influence the behavior and physiology of their daughters. Notably, they also suggest that distinct mechanisms determine dominant and submissive interactions in social and solitary females
Tenant Unions: Legal Rights of Members
No full textVarious articles have been written about the sociological aspects of tenant unions. This paper will consider, however, only the following tenant union problems: 1. the right of a tenant union to provide an attorney to represent its members in the litigation of personal causes against the landlord; 2. the right of a tenant union, acting as an entity, to bargain collectively with the landlord, sign a contract with him, and then enforce the contract; 3. the right of a tenant union to sue the landlord on behalf of its members
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