Mac Operating Systems Research Articles

SuperIso: A program for calculating the isospin asymmetry of [formula omitted] in the MSSM

We present a program for calculating the isospin symmetry breaking in B → K ∗ γ decays in the MSSM with minimal flavor violation. This program calculates the NLO supersymmetric contributions to the isospin asymmetry, using the effective Hamiltonian approach and within the QCD factorization method. We show that isospin symmetry breaking proves to be a very restrictive observable, in particular in the mSUGRA parameter space. The program also calculates the inclusive branching ratio associated to b → s γ transition, as a comparison reference. Program summary Program title:SuperIso Catalogue identifier:AEAN_v1_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEAN_v1_0.html Program obtainable from:CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions:Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.:3537 No. of bytes in distributed program, including test data, etc.:23 595 Distribution format:tar.gz Programming language:C (C99 Standard compliant) Computer:32- or 64-bit PC, Mac Operating system:Linux, MacOS RAM:less than 1 MB Classification:11.6 External routines:ISASUGRA/ISAJET ( http://www.hep.fsu.edu/~isajet/) and/or SOFTSUSY ( http://projects.hepforge.org/softsusy) Nature of problem:Calculation of isospin asymmetry in B → K ∗ γ decays in the Minimal Supersymmetric extension of the Standard Model with minimal flavor violation. This observable brings severe constraints on the supersymmetric parameter space. Solution method:SuperIso uses a SUSY Les Houches Accord file, which can be either generated automatically by calling SOFTSUSY or ISAJET, or provided by the user. This file contains the masses and couplings of the supersymmetric particles. SuperIso then computes Wilson coefficients, which are used to calculate the isospin symmetry breaking in B → K ∗ γ decays, as well as the inclusive branching ratio of B → X s γ . SuperIso is able to perform the calculation in different supersymmetry breaking scenarios, such as mSUGRA, AMSB and GMSB. Restrictions:This calculation is valid only in the MSSM with minimal flavor violation. Unusual features:The code is very modular, and new routines for calculating new physical observables such as the branching ratio of B s → μ + μ − , can be easily added. Additional comments:The module which reads the SUSY Les Houches Accord file can be used independently in other programs. Running time:0.1 sec

A portable AWT/Swing architecture for Java game development

AbstractRecently, the performance of Java platforms has been greatly improved to satisfy the requirements for game development. However, the rendering performance of Java 1.1, which is still used by about one‐third of current Web browser users, is not sufficient for high‐profile games. Therefore, practically, Java game developers, especially those who use applets, have to take this into consideration in most environments. In order to solve the above problems, this paper proposes a portable window toolkit architecture called the CYC Window Toolkit (CWT) with the ability to: (1) reach high rendering performance particularly in Java 1.1 applications and applets when using DirectX to render widgets in CWT; (2) support AWT/Swing compatible widgets, so hence the CWT can be easily applied to existing Java games; (3) define a general architecture that supports multiple graphics libraries such as AWT, DirectX and OpenGL, multiple virtual machines such as Java VM and .NET CLR, and multiple operating systems (OSs) such as Microsoft Windows, Mac OS and UNIX‐based OSs; (4) provide programmers with one‐to‐one mapping APIs to directly manipulate DirectX objects and other game‐related properties. The CWT has also been applied to an online Java game system to demonstrate the proposed architecture. Copyright © 2006 John Wiley & Sons, Ltd.

Learning resource for professionals offering antenatal and newborn care

Learning resource for professionals offering antenatal and newborn care

JColorGrid: software for the visualization of biological measurements

BackgroundTwo-dimensional data colourings are an effective medium by which to represent three-dimensional data in two dimensions. Such "color-grid" representations have found increasing use in the biological sciences (e.g. microarray 'heat maps' and bioactivity data) as they are particularly suited to complex data sets and offer an alternative to the graphical representations included in traditional statistical software packages. The effectiveness of color-grids lies in their graphical design, which introduces a standard for customizable data representation. Currently, software applications capable of generating limited color-grid representations can be found only in advanced statistical packages or custom programs (e.g. micro-array analysis tools), often associated with steep learning curves and requiring expert knowledge.ResultsHere we describe JColorGrid, a Java library and platform independent application that renders color-grid graphics from data. The software can be used as a Java library, as a command-line application, and as a color-grid parameter interface and graphical viewer application. Data, titles, and data labels are input as tab-delimited text files or Microsoft Excel spreadsheets and the color-grid settings are specified through the graphical interface or a text configuration file. JColorGrid allows both user graphical data exploration as well as a means of automatically rendering color-grids from data as part of research pipelines.ConclusionThe program has been tested on Windows, Mac, and Linux operating systems, and the binary executables and source files are available for download at .

The Initium RJS Screensaver: Part 4, Automatic Deployment.

The Intium RJS System makes use of screensavers to perform CPU scavenging for grid computing. This article shows how to automate the installation of the IRJS screensaver. The manual installation of the IRJS screensaver, presented in parts 1 and 2 of this series, has been automated to ease installation. A Java Web Start application has been created to complete the installation of the screensaver for Windows and Unix/Linux platform. This application performs an operating system identification and proceeds to download, install, and configure the screensaver files. The installation of the screensaver is a function of the OS, due to differences in screensavers support. Our three previous papers showed how to create screensavers in Java for Windows, Linux and Mac operating systems.

SU‐FF‐E‐03: RadSim, a Program to Simulate Individual Radiation Interactions for Teaching Purposes

Purpose: To develop a computer program to simulate individual particle interactions in a visual way, as a teaching aid in radiotherapy physics. Method and Materials: A program, RadSim, was developed using the RealBasic software development environment. A Graphical User Interface allows users to select individual interactions to be simulated for photons, electrons and positrons in the energy range encompassing radiation oncology (1 keV — several hundred MeV). The program is designed to operate in two modes. In the Manual mode a single interaction is performed. In the Simulated mode the user can run a short Monte Carlo simulation for a small number of particles. In the latter mode statistics on the interaction variables are displayed graphically. The program is made available in versions for the Windows, Linux and Mac operating systems, via free download from a website. Results: The user can simulate the following types of interactions: for photons: Compton scatter, photoelectric effect with characteristic x‐rays, Rayleigh scattering and pair‐production, for electrons: inelastic nuclear scattering with Bremsstrahlung production, electron‐electron scattering, for positrons: Bhabha scattering and annihilation. The Manual mode allows visual evaluation of kinematic equations. The user can initialize any combination of a minimally required set of interaction variables and the program evaluates the remaining variables, and displays the interaction visually showing incoming and outgoing particles. In the Simulated mode, the user can only change the kinetic variables of the initial particle. The final state of all particles involved is generated from a Monte Carlo simulation. The user defines the number of particles used in the simulation and frequency distributions are displayed during the simulation so that the user can watch the distributions grow. Conclusion: The program RadSim enables virtual radiation experiments in the classroom and for self‐learning and is found to be a useful addition to textbook teaching.

Apple Computers: From Class to Mass?

Apple Computers, despite being credited with pioneering the personal computer (PC) revolution by introducing products ahead of its time, never really succeeded in dominating the market. The computer industry got de-verticalised from the late 1980s and early 1990s (with Windows from Microsoft and processors from Intel) making PC's an affordable commodity with open standards. Apple rejected this trend and continued to promote its Mac OS (operating system), and closed architecture. While Microsoft, with Windows, became the biggest success story in the late 20th century, Apple never gained a strong foothold in the PC industry. From the early 1990s Apple's market share fell from 20% to 5%. By the end of 2004 it was only 3%. In order to promote its brand, Apple entered consumer electronics, and introduced its own line of retail stores. iPod, the company's digital music player, boasted an 87.3% market share among hard drive-based music players and boosted the Apple brand. This case explores the significance of technological innovations from a strategic perspective. The rapid pace of technological innovations in the computer industry has shortened the life span of strategies, from decades to months. In light of this fact the case also provokes debate on the innovator's advantage in business leadership. While in some cases innovators do rule the market, such as Intel in microprocessors, and SAP in ERP (enterprise resource planning) packages.

Y2K or Bust

Y2K or Bust

32-bit computing: road to confusion?

Software engineers may easily feel perplexed over the multitude of operating systems that are now emerging for the 32-bit desktop environment. OS/2, NextStep, the Mac's operating system, and Unix have been around for years; NT is still fresh and needs to prove itself: and technology such as Taligent and Chicago (Windows 4.0) have yet to emerge. Each 32-bit operating system seems to be taking such a different approach that all the confusion about which will dominate isn't surprising. The author explores these trends.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>