Transient polarization dynamics in a CO2_2 laser

We study experimentally and theoretically the polarization alternation during the switch-on transient of a quasi-isotropic CO$_2$ laser emitting on the fundamental mode. The observed transient dynamics is well reproduced by means of a model which provides a quantitative discrimination between the intrinsic asymmetry due to the kinetic coupling of molecules with different angular momenta, and the extrinsic anisotropies, due to a tilted intracavity window. Furthermore, the experiment provides a numerical assignment for the decay rate of the coherence term for a CO$_2$ laser.Comment: 14 pages, 6 figures, submitted to Opt. Com

Migliorare la gestione del tempo attraverso la delega

Questo testo nasce con il chiaro obiettivo di offrire al lettore indicazioni a 360° sulle problematiche di "management" delle piccole e medie imprese. Si tratta di una guida dal taglio pragmatico in cui si trovano spiegate e risolte le principali problematiche gestionali che interessano e spesso affliggono un imprenditore: da quelle fondamentali ove è maggiore la specificità rispetto alle piccole dimensioni (strategia e organizzazione), a quelle inerenti ai rapporti con tutto ciò che è esterno all'impresa (marketing, finanza e credito, reti di fornitura), per arrivare a quelle interne più "tecniche" (produzione, vendite, controllo di gestione e sistemi informativi). Folti apparati di tabelle, schemi grafici, box contenenti i casi aziendali, riepiloghi alla fine dei capitoli, suggerimenti bibliografici per ulteriori approfondimenti sul tema aiutano e incentivano la lettura, rendendo il testo fruibile al target di riferimento

A Study of the United States Supreme Court Decisions in the Texas White Primary Cases

Abstract not availabl

European Survey of Independent Drug Information Centers

OBJECTIVE: The purpose of our survey was to ascertain the activities of the independent drug information centers (DICs) in Europe and to contact the person in charge of these services to establish a European network of DICs in the future. DATA SOURCES: The survey was conducted in 32 European countries. We contacted 2026 people in DICs and official healthcare organizations by mail. On request, we returned our questionnaire including 167 closed questions on the means and activities of a DIC. Data were collected and analyzed on a personal computer using dBASE III PLUS (Ashton-Tate). RESULTS: Of the 110 questionnaires received, 88 answered the question pertaining to the number of queries asked of the DIC per year and were analyzed (1 from West Germany, Denmark, Finland, Sweden, Portugal, Poland; 2 from Italy; 3 from Switzerland; 6 from Spain; 8 from The Netherlands; 16 from France; and 47 from the United Kingdom). We recorded data on their location, their means (e.g., staff, information), their users (e.g., health professionals), and activities. CONCLUSIONS: The DICs were located in healthcare structures, managed by pharmacists or physicians, and open to other health professionals. Only the United Kingdom maintains a national organized network. Most of the participants showed interest in cooperating with each other to establish a list of the centers, guidelines on good information practices, a database, and a European network. </jats:sec