Unwrapping the Comfort of Sameness With Spanish Immersion Elementary School

I watched my 6-year-old hover around the periphery of the table, unable to find somewhere to sit. The cafeteria was a cacophony of little voices, Spanish and English, tumbling over each other, her classmates sitting close and waiting to be dismissed to homeroom. I couldn’t help but notice how different Noelle looked from most of the children, with her liquid blond hair and saucerlike blue eyes. [excerpt

Debugging real-time software in a host-target environment

A common paradigm for the development of process-control or embedded computer software is to do most of the implementation and testing on a large host computer, then retarget the code for final checkout and production execution on the target machine. The host machine is usually large and provides a variety of program development tools, while the target may be a small, bare machine. A difficulty with the paradigm arises when the software developed has real-time constraints and is composed of multiple communicating processes. If a test execution on the target fails, it may be exceptionally tedious to determine the cause of the failure. Host machine debuggers cannot normally be applied, because the same program processing the same data will frequently exhibit different behavior on the host. Differences in processor speed, scheduling algorithm, and the like, account for the disparity. This paper proposes a partial solution to this problem, in which the errant execution reconstructed and made amenable to source language level debugging on the host. The solution involves the integrated application of a static concurrency analyzer, an interactive interpreter, and a graphical program visualization aid. Though generally applicable, the solution is described here in the context of multi-tasked real-time Ada* programs

Jesus Lives, but Should He Live in My Front Yard?

As I drove home from church, I eyed the bright foam sign my 6-year-old daughter held. “Jesus is Alive” it read in kid scrawl. “We’re supposed to put them in our yards!” Noelle beamed, eyeing her creation proudly through pink-rimmed glasses. I imagined our wide, open yard in Pennsylvania, the green grass stretching without fences from one neighbor to the next. Our best friends in the neighborhood, secular humanists, would easily see it. I cringed. What would they think? [excerpt

Crew: Finding Community When Your Dreams Crash

Most young adults at some point experience a personal shipwreck —missing out on the job you wanted, the unexpected end of a relationship, a crisis of faith—that threatens to rip apart the fabric of your identity. What helps navigate a personal shipwreck is to have a crew of reliable people who walk with you through it. In Crew: Finding Community When Your Dreams Crash, Christin Taylor explores how young adults can both find good company during a time of personal shipwreck and be good company for others who might be experiencing their own shipwreck. In the process, you will learn the hope and security that comes from being part of a community. Based on sound scriptural principles and the latest research on young adult spiritual formation, Taylor gives young adults the knowledge and perspective you need to build a community that will help you make your way toward a sense of hope and new meaning. [From the publisher]https://cupola.gettysburg.edu/books/1059/thumbnail.jp

Investigating grid computing technologies for use with commercial simulation packages

As simulation experimentation in industry become more computationally demanding, grid computing can be seen as a promising technology that has the potential to bind together the computational resources needed to quickly execute such simulations. To investigate how this might be possible, this paper reviews the grid technologies that can be used together with commercial-off-the-shelf simulation packages (CSPs) used in industry. The paper identifies two specific forms of grid computing (Public Resource Computing and Enterprise-wide Desktop Grid Computing) and the middleware associated with them (BOINC and Condor) as being suitable for grid-enabling existing CSPs. It further proposes three different CSP-grid integration approaches and identifies one of them to be the most appropriate. It is hoped that this research will encourage simulation practitioners to consider grid computing as a technologically viable means of executing CSP-based experiments faster

An analysis of internal/external event ordering strategies for COTS distributed simulation

Distributed simulation is a technique that is used to link together several models so that they can work together (or interoperate) as a single model. The High Level Architecture (HLA) (IEEE 1516.2000) is the de facto standard that defines the technology for this interoperation. The creation of a distributed simulation of models developed in COTS Simulation Packages (CSPs) is of interest. The motivation is to attempt to reduce lead times of simulation projects by reusing models that have already been developed. This paper discusses one of the issues involved in distributed simulation with CSPs. This is the issue of synchronising data sent between models with the simulation of a model by a CSP, the so-called external/internal event ordering problem. The motivation is that the particular algorithm employed can represent a significant overhead on performance

Investigating distributed simulation with COTS simulation packages: Experiences with Simul8 and the HLA

Commercial-off-the-shelf simulation packages (CSPs) are used widely in industry. Several research groups are currently working towards the creation of distributed simulation with these CSPs. The motivations to do this are various and are largely unproven as there are very few good examples of this kind of distributed simulation in practice. Our goal is therefore to create a distributed simulation environment using CSPs that will allow end users to make their own decisions as to whether this technology will be useful. This paper presents continuing research in creating such an environment using the CSP Simul8 and the High Level Architecture, the IEEE 1516 standard for distributed simulation. The scope of this paper is limited to the CSPI-PDG Type I Interoperability Reference Model

On the Moduli Space of SU(3) Seiberg-Witten Theory with Matter

We present a qualitative model of the Coulomb branch of the moduli space of low-energy effective N=2 SQCD with gauge group SU(3) and up to five flavours of massive matter. Overall, away from double cores, we find a situation broadly similar to the case with no matter, but with additional complexity due to the proliferation of extra BPS states. We also include a revised version of the pure SU(3) model which can accommodate just the orthodox weak coupling spectrum.Comment: 32 pages, 25 figures, uses JHEP.cls, added references, deleted joke