P. Rankin

Demographic Inertia Revisited: An Immodest Proposal to Achieve Equitable Gender Representation among Faculty in Higher Education

To address the problem of an unequal sex ratio among faculty at a male-dominated Research Extensive university, we estimate time to reach equality in the faculty gender composition. Five scenarios model demographic factors and policy intervention by using an innovative application of a differential equations model.

Vital Variables and Gender Equity in Academe: Confessions from a Feminist Empiricist Project

Les AA. temoignent de leur participation a un projet de recherche consistant en un ensemble dinterventions destinees a changer les politiques, structures et climats universitaires, dans la direction de laugmentation du nombre de femmes dans les disciplines sciences, technologie, ingenierie et mathematiques (STEM). Leur role specifique etait devaluer limpact a long terme et lefficacite des diverses strategies dintervention. Dans une premiere partie, elles decrivent comment une serie danalyses quantitatives de donnees salariales ont conduit a la recherche dun contexte interpretatif, et ce quelles entendent par variables vitales. Elles decrivent ensuite leurs efforts pour mesurer la conscience feministe comme concept theoriquement pertinent et indicateur majeur du climat sur le campus a partir dinstruments standards denquete. Pour conclure que la pensee feministe sur la conscience feministe et autres concepts similaires ont depasse les methodes disponibles, et decrire differentes voies par lesquelles lempirisme feministe est en transition dans ce projet.

Particle identification using dEdx in the mark II detector at the SLC

Abstract The central drift chamber in the Mark II detector at the SLAC linear collider has been instrumented with 100 MHz flash-ADCs. Pulse digitization provides particle identification through the measurement of average ionization loss in the chamber. We present the results of a study of system performance and outline the systematic corrections that optimize resolution. The data used are from a short test run at PEP with one third of the FADCs installed, and an extensive cosmic ray sample with the fully instrumented chamber.

Two-body D+s decays to ηπ+, η′π+, ηρ+, η′ρ+, and φρ+

We have made measurements of several {ital D}{sub {ital s}} branching ratios, relative to the {phi}{pi}{sup +} mode. We have observed two previously unseen two-body hadronic decays of the {ital D}{sub {ital s}}{sup +}, namely {eta}{rho}{sup +} and {eta}{prime}{rho}{sup +}, and measured relative branching ratios of 2.86{plus minus}0.38{sub {minus}0.38}{sup +0.36} and 3.44{plus minus}0.62{sub {minus}0.46}{sup +0.44}, respectively. We have determined the relative branching ratio for the decay into {phi}{rho}{sup +} to be 1.86{plus minus}0.26{sub {minus}0.40}{sup +0.29}. In addition, we have measured relative branching ratios for the {eta}{pi}{sup +} and {eta}{prime}{pi}{sup +} states, for which there had previously been conflicting measurements; our results are 0.54{plus minus}0.09{plus minus}0.06 and 1.20{plus minus}0.15{plus minus}0.11, respectively. Combining these new measurements with previous results and using (3.7{plus minus}1.2)% for the value of {ital scrB}({ital D}{sub {ital s}}{r arrow}{phi}{pi}{sup +}), we can account for {approx}(79{plus minus}26)% of all {ital D}{sub {ital s}}{sup +} decays. In addition we have also measured relative branching ratios or set upper limits on {ital D}{sup +} decays to all of the above-mentioned final states.

The 3081/E Processor and Its on-Line Use

The 3081/E is a second generation emulator of a mainframe IBM. One of its applications will be to form part of the data acquisition system of the upgraded Mark II detector for data taking at the SLAC linear collider. Since the processor does not have direct connections to I/O devices a FASTBUS interface will be provided to allow communication with both SLAC Scanner Processors (which are responsible for the accumulation of data at a crate level) and the experiments VAX 8600 mainframe. The 3081/Es will supply a significant amount of on-line computing power to the experiment (a single 3081/E is equivalent to 4-5 VAX 11/780S). A major advantage of the 3081/E is that program development can be done on an IBM mainframe (such as the one used for off-line analysis) which gives the programmer access to a full range of debugging tools. The processors performance can be continually monitored by comparison of the results obtained using it to those given when the same program is run on an IBM computer.

A FASTBUS Interface for the 3081/E

The design of a FASTBUS interface to the 3081/E is presented. The interface consists of two boards, one specific to FASTBUS, the other usable by other interfaces to the 3081/E. The FASTBUS board is a dual-ported slave, permitting access from either of two cable segments. The general purpose board supports transfers to and from 3081/E memory and provides control of program execution. It also has several features which facilitate software debugging.

Measurement of the [ital [bar B]][r arrow][ital D][sup *][ital l][bar [nu]] branching fractions and [vert bar][ital V][sub [ital c][ital b]][vert bar]

We study the exclusive semileptonic B meson decays B- ->D*0 l- nu and B0 ->D*+ l- nu using data collected with the CLEO II detector at CESR. We present measurements of the branching fractions B(B0 ->D*+ l-nu) = 0.5/f00* [4.49+/-0.32+/-0.39]% and B(B- ->D*0 l-nu) = 0.5/f+-*[5.13+/-0.54+/-0.64]%, where f00 and f+- are the neutral and charged B meson production fractions at the Upsilon(4s) resonance. Assuming isospion invariance and taking the charged to neutral B meson lifetimes measured at higher energy machines, we determine the ratio f+-/f00=1.04+/-0.14+/-0.13+-/-0.10; further assuming f+- + f00 = 1 we also determine the partial width G(B->D* l nu) = 29.9+/-1.9+/-2.7+/-2.0 ns-1 (independent of f+-/f00). From this partial width we calculate B ->D* l nu branching fractions that do not depend on f+-/f00, nor the individual B lifetimes, but only on the charged to neutral lifetime ratio. The product of the CKM matrix element |Vcb| times the normalization of the decay form factor at the point of zero recoil of the D* meson, F(y=1), is determined from a linear fit to the combined differential decay rate of the exclusive B->D* l nu decays: |Vcb|F(y) = 0.0351 +/- 0.0019 +/- 0.0018 +/- 0.0008. Using theoretical calculations of the form factor normalization we extract a value for |Vcb|. LATEX (REVTEX style) file with uuencoded figures attached (uses PSBOX). Available on WWW http://w4.lns.cornell.edu/public/CLNS/