Supersymmetric one-loop corrections to the process e^+e^- to f fbar

Radiative one-loop corrections to fermion pair production in $e^+e^-$ annihilation are calculated in the Minimal Supersymmetric Standard Model (MSSM). The size of the non-standard corrections is discussed for the process e^+e^- to mu^+mu^- and e^+e^- to hadrons at LEP2 energies and for e^+e^- to t tbar at a high energy e^+e^- collider. The relative difference between the predictions of the MSSM and the Standard Model is typically below 10%.Comment: 48 pages, LaTex. Typos corrected, some comments added, diagram classes changed. Paper accepted by Nucl. Phys.

Revision of the orchid bee subgenus Euglossella (Hymenoptera: Apidae), part II: The viridis and mandibularis species groups

This is the published version.The second and final part of a revision of the subgenus Euglossella Moure in the orchid bee genus Euglossa Latreille (Apinae: Euglossini) is presented here, redefining the species groups within it to comply with current morphological and molecular phylogenetic hypotheses. We present a fully illustrated account of the species comprising the newly defined viridis and mandibularis species groups, with comparable diagnoses for all species, keys to the new scheme of species groups within the subgenus, and keys for males and females to the species of the two groups here treated. The viridis group as presented here is composed of 12 species, five of them newly described — Euglossa (Euglossella) celiae Hinojosa-Díaz & Engel, new species, E. (E.) subandina Hinojosa-Díaz & Engel, new species, E. (E.) cetera Hinojosa-Díaz & Engel, new species, E. (E.) cupella Hinojosa-Díaz & Engel, new species, and E. (E.) ashei Hinojosa-Díaz & Engel, new species — and one resurrected from synonymy as E. (E.) azurea Ducke. Euglossa (Euglossella) viridis (Perty), E. (E.) cyanea Friese, E. (E.) polita Ducke, E. (E.) perviridis Dressler, E. (E.) cyanura Cockerell, and E. (E.) granti Cheesman comprise the remaining species within the group. Females of E. perviridis are described for the first time. The mandibularis group includes three species — E. (E.) mandibularis Friese, E. (E.) bigibba Dressler, and E. (E.) perfulgens Moure. In total, considering the six species previously included in the decorata group, the subgenus now includes a total of 21 species. New country records are presented for E. viridis, E. perviridis, and E. mandibularis. Notes on morphological variation and distribution are included as is a summary of known chemical attractants and floral substrates

Faculty recital: The Díaz Trio, November 20, 1994

This is the concert program of The Díaz Trio performance on Sunday, November 20, 1994 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were Serenade for String Trio, Op. 10 by Ernö Dohnanyi, Trio for Strings by Alfred Schnittke, and Trio for Strings in E-flat major, Op. 3 by Ludwig van Beethoven. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

State's Responsibility in ICSID Arbitration Practice

Programa de Doctorado en Derecho por la Universidad Carlos III de MadridPresidente: Fernandez Liesa, Carlos Ramon.- Secretario: Gamarra Chopo, Yolanda.- Vocal: Elena Carolina Díaz Galá

Two new orchid bees of the subgenus Euglossella from Peru (Hymenoptera: Apidae).

Aus Peru werden zwei neue Prachtbienen-Arten der Gattung Euglossa, Subgenus Euglossella, (Apinae: Euglossini) beschrieben und dargestellt. Beide Arten, Euglossa (Euglossella) cosmodora sp. n. wie E. (E.) urarina sp. n., gehören der Euglossella-decorata-Gruppe an (ein Taxon, das oberflächlich an Stachellose Bienen der Gattung Melipona erinnert) und werden sowohl in der Gattung wie gegeneinander charakterisiert.StichwörterApoidea, Anthophila, Apinae, Euglossini, Peru, taxonomy.Nomenklatorische Handlungencosmodora Hinojosa-Díaz & Engel, 2007 (Euglossa (Euglossella)), spec. n.urarina Hinojosa-Díaz & Engel, 2007 (Euglossa (Euglossella)), spec. n.Two new orchid bees of Euglossa subgenus Euglossella (Apinae: Euglossini) are described and figured from Peru. Both Euglossa (Euglossella) cosmodora sp. n. and E. (E.) urarina sp. n. belong to the decorata species group (i.e., the clade superficially resembling stingless bees of the genus Melipona) of Euglossella and are distinguished from their congeners as well as each other.KeywordsApoidea, Anthophila, Apinae, Euglossini, Peru, taxonomy.Nomenclatural Actscosmodora Hinojosa-Díaz & Engel, 2007 (Euglossa (Euglossella)), spec. n.urarina Hinojosa-Díaz & Engel, 2007 (Euglossa (Euglossella)), spec. n

Revision of the orchid bee subgenus Euglossella (Hymenoptera: Apidae), part II: The viridis and mandibularis species groups

This is the publisher's version, also available electronically from https://journals.ku.edu/index.php/melittology/article/view/4777.The second and final part of a revision of the subgenus Euglossella Moure in the orchid bee genus Euglossa Latreille (Apinae: Euglossini) is presented here, redefining the species groups within it to comply with current morphological and molecular phylogenetic hypotheses. We present a fully illustrated account of the species comprising the newly defined viridis and mandibularis species groups, with comparable diagnoses for all species, keys to the new scheme of species groups within the subgenus, and keys for males and females to the species of the two groups here treated. The viridis group as presented here is composed of 12 species, five of them newly described — Euglossa (Euglossella) celiae Hinojosa-Díaz & Engel, new species, E. (E.) subandina Hinojosa-Díaz & Engel, new species, E. (E.) cetera Hinojosa-Díaz & Engel, new species, E. (E.) cupella Hinojosa-Díaz & Engel, new species, and E. (E.) ashei Hinojosa-Díaz & Engel, new species — and one resurrected from synonymy as E. (E.) azurea Ducke. Euglossa (Euglossella) viridis (Perty), E. (E.) cyanea Friese, E. (E.) polita Ducke, E. (E.) perviridis Dressler, E. (E.) cyanura Cockerell, and E. (E.) granti Cheesman comprise the remaining species within the group. Females of E. perviridis are described for the first time. The mandibularis group includes three species — E. (E.) mandibularis Friese, E. (E.) bigibba Dressler, and E. (E.) perfulgens Moure. In total, considering the six species previously included in the decorata group, the subgenus now includes a total of 21 species. New country records are presented for E. viridis, E. perviridis, and E. mandibularis. Notes on morphological variation and distribution are included as is a summary of known chemical attractants and floral substrates

House prices, sales, and time on the market : a search-theoretic framework

We build a search model of the housing market which captures the illiquidity of housing assets. In this model, households experience idiosyncratic shocks over time which affect how much they value their residence (e.g. the location of their job could change). When hit by a shock, households become mismatched and seek to buy a new home. Yet they take time to locate an appropriate housing unit and to sell their current home. Competitive forces are present in the housing market since, by posting lower prices, sellers increase the average number of buyer visits they get and sell their property faster. We characterize a stationary equilibrium for a fixed housing stock. We then calibrate a stochastic version of the model to reproduce selected aggregate statistics of the U.S. economy. The model is consistent with the high volatility of prices, sales and average time on the market, the positive correlation of prices and sales, and the negative correlation of prices and average time on the market observed in the data. This is not the case when we consider the perfectly competitive version of the modelHouse prices, Sales, Time on the market, Search frictions, Competitive search

House prices, sales, and time on the market : a search-theoretic framework (Supplementary material)

In this document we present additional results for our main paper. First, we prove some properties of the steady state of our benchmark economy. Then, we present an alternative calibrationHouse prices, Sales, Time on the market, Search frictions, Competitive search

Business cycle fluctuations and the cost of insurrance in computable heterogeneous agent economies

In this paper I study the business cycle implications of alternative insurance technologies using a computable general equilibrium heterogeneous agent environment. I find that the limited monetary arrangement entails larger fluctuations in hours relative to productivity than those that obtain in an identical economy where every risk is costlessly insurable. I also find that in the monetary economy the price level displays a markedly countercyclical behavior. Finally I evaluate the welafare costs of the monetary self-insurance arrangement