FORTRAN optical lens design program

Computer program uses the principles of geometrical optics to design optical systems containing up to 100 planes, conic or polynomial aspheric surfaces, 7 object points, 6 colors, and 200 rays. This program can be used for the automatic design of optical systems or for the evaluation of existing optical systems

THE INFLUENCE OF DEPRESSIVE SYMPTOMS ON FATHERS’ BEHAVIORS AND ATTITUDES

The present study examines the impact of young, poor, unwed fathers on their family by investigating the influence of depressive symptom frequency on fathers’ relationship with their children and partners. Couples from seven American cities with populations over 200,000 were recruited and interviewed about such areas of life as romantic and parental relationships, health, and employment at the hospital within 24 hours after the birth of their child. An Item Response Theory (IRT) within-group analysis of the 1,759 African-, Caucasian-, Hispanic-, Asian-, and Native American fathers in the study yielded a 3-class clustering of depressive symptoms. Class 1 fathers had the lowest frequency of depressive symptom expression; class 2 fathers had a low frequency; and class 3 fathers had low to medium rates of depressive symptoms. Multivariate statistics revealed that depressive class membership predicted domestic violence toward fathers’ partners but not affection toward their children. The importance of the parental behavior of teaching children about life, however, varied by class, with class 2 fathers most highly endorsing this behavior. Implications of young, unwed, poor fathers' behaviors and attitudes toward their children and romantic partners will be discussed in terms of men's contributions to family life.

Designing the real virtual library: an overview of the preparation of an upgrade for the University of Queensland Library

Two of the branches of the University of Queensland Library, both serving staff and students in the social sciences and humanities disciplines, were designed and built some 25 years ago. A ten million dollar upgrade project is being designed to link the two buildings, amalgamate library services, and provide the basis for the delivery of information services in person to staff and students on the St Lucia campus, and via desktop dial-up means to staff and students in their offices or homes. While information technology has been a driving force in the building design, the centrality of the client has been the prime focus

The dream team: sharing architect and librarian skills to ensure library design excellence

Many library managers around the world are developing close working relationships with architects to ensure that the design of libraries meets client needs, functional requirements, and efficiency criteria, with attractive inspiring buildings providing a sense of community for various types of use and user. At the University of Queensland, in Brisbane, Australia, a model of library service delivery was developed through an effective partnership of the then University Librarian and the Principal of a local architectural firm. Library design and refurbishment at the University of Queensland used innovative design principles, blending the perspectives of both the librarian and the architect in a unique partnership which was both personally rewarding and professionally successful

Transferência de dispositivos de reconhecimento da agricultura orgânica e apropriação local: uma análise sobre a Rede Ecovida

Recognition mechanisms for organic agriculture have been transferred from the European Union and the United Sates of America to Brazil, along with their regulation and certification systems. Our research aims to evaluate the local adaptation and appropriation of such systems in the state of Santa Catarina, Brazil. This work is a preliminary analysis of field data collected from one of the three networks surveyed, "Rede Ecovida de Agroecologia". This network is set up to escape, as far as possible, from constraints established by a kind of recognition its members define as "official", belonging to the"certification industry", and exceedingly reductionist. The network gives, therefore, priority to direct sales to "aware" consumers. This militant practice constitutes an ambitious form of social control ofcertification, but their procedures have been situated, for a long time, in the relatively narrow space of local markets. They are confronted, however, to other options linked to wider markets with shorter action time spans, that reflect the reactivity of commercial operators to rapid changes in urban consumption models. The duration, stability and flexibility of each of these recognition systems depend largely on the dynamic imposed on the temporal and spatial contexts of their agents

Quantum Monte Carlo method using phase-free random walks with Slater determinants

We develop a quantum Monte Carlo method for many fermions that allows the use of any one-particle basis. It projects out the ground state by random walks in the space of Slater determinants. An approximate approach is formulated to control the phase problem with a trial wave function $|\Psi_T>$. Using plane-wave basis and non-local pseudopotentials, we apply the method to Si atom, dimer, and 2, 16, 54 atom (216 electrons) bulk supercells. Single Slater determinant wave functions from density functional theory calculations were used as $|\Psi_T>$ with no additional optimization. The calculated binding energy of Si2 and cohesive energy of bulk Si are in excellent agreement with experiments and are comparable to the best existing theoretical results.Comment: 5 pages, Latex, with 1 fi

Features and flaws of a contact interaction treatment of the kaon

Elastic and semileptonic transition form factors for the kaon and pion are calculated using the leading-order in a global-symmetry-preserving truncation of the Dyson-Schwinger equations and a momentum-independent form for the associated kernels in the gap and Bethe-Salpeter equations. The computed form factors are compared both with those obtained using the same truncation but an interaction that preserves the one-loop renormalisation-group behaviour of QCD and with data. The comparisons show that: in connection with observables revealed by probes with |Q^2|<~ M^2, where M~0.4GeV is an infrared value of the dressed-quark mass, results obtained using a symmetry-preserving regularisation of the contact-interaction are not realistically distinguishable from those produced by more sophisticated kernels; and available data on kaon form factors do not extend into the domain whereupon one could distinguish between the interactions. The situation is different if one includes the domain Q^2>M^2. Thereupon, a fully consistent treatment of the contact interaction produces form factors that are typically harder than those obtained with QCD renormalisation-group-improved kernels. Amongst other things also described are a Ward identity for the inhomogeneous scalar vertex, similarity between the charge distribution of a dressed-u-quark in the K^+ and that of the dressed-u-quark in the pi^+, and reflections upon the point whereat one might begin to see perturbative behaviour in the pion form factor. Interpolations of the form factors are provided, which should assist in working to chart the interaction between light-quarks by explicating the impact on hadron properties of differing assumptions about the behaviour of the Bethe-Salpeter kernel.Comment: 17 pages, 9 figures, 4 table