Software Acquisition Improvement in the Aeronautical Systems Center

In the past 20 years, over 150 recommendations have been made to improve software systems development by organizations such as the Defense Science Board, National Research Council and the U.S. General Accountability Office. It has been discovered that many of these recommendation have remained unimplemented. This research had the purpose of confirming the application of these previous recommendations to improve software acquisition in the Aeronautical Systems Center. This was accomplished through interviews with 20 software practitioners in the acquisition community and the review of relevant literature. Through the analysis of the interviews and literature, this research was able to confirm that many of the recommendations have been applied in programs throughout ASC

Development and testing of the RHINO host streamed data acquisition framework

This project focuses on developing a supporting framework for integrating the Reconfigurable Hardware INterface for computing and radiO (RHINO) with a Personal Computer (PC) host in order to facilitate the development of Software Defined Radio (SDR) applications built using a hybrid RHINO/multicore PC system. The supporting framework that is the focus of this dissertation is designed around two main parts: a) resources for integrating the GNU Radio framework with the RHINO platform to allow data streams to be sent from RHINO to be processed by GNU Radio, and b) a concise and highly efficient C code module with accompanying Application Program Interface (API) that will receive streamed data from RHINO and provide data marshalling facilities to gather and dispatch blocks of data for further processing using C/C++ routines. The methodology followed in this research project involves investigating real-time streaming techniques using User Datagram Protocol (UDP) packets, furthermore, investigating how GNU Radio high-level SDR development framework can be integrated into the real-time data acquisition systems such as in the case of this project with RHINO. The literature for real-time processing requirements for the streamer framework was reviewed. The guidelines to implement a high performance, low latency and maximum throughput for streaming will consequently be presented and the proposed design motivated. The results achieved demonstrate an efficient data streaming system. The objectives of implementing RHINO data acquisition system through integration with standard C/C++ code and GNU Radio were satisfactorily met. The system was tested with real-time Radio Frequency (RF) demodulation. The system captures a pair of an In-phase/Quadrature signal (I/Q) sample at a time, which is one packet. The results show that data can be streamed from the RHINO board to GNU Radio over GbE with a minimum capturing latency of 10.2μs for 2 0 packet size and an average data capturing throughput of 0.54 Mega Bytes per second (MBps). The capturing latency, in this case, is the time taken from the time of the request to receiving the data. The FM receiver case study successfully demonstrated results of a demodulated FM signal of a 94.5 Mega Hetz (MHz) radio station. Further recommendations include making use of the 10GbE port on RHINO for data streaming purposes. 10GbE port on RHINO can be used together with GNU Radio to improve the speed of the RHINO streamer

Atmosphere, Magnetosphere and Plasmas in Space (AMPS). Spacelab payload definition study. Volume 7, book 2: AMPS phase C/D analysis and planning document

The results are presented of the AMPS Phase C/D (Design, Development, and Operations) program analysis and planning effort. Cost and schedule estimates are included. Although the AMPS program has been specifically addressed, these task descriptions are basically adaptable to a broader-based program incorporating additional or different Spacelab/orbiter payloads

Building on Progress - Expanding the Research Infrastructure for the Social, Economic, and Behavioral Sciences. Vol. 1

The publication provides a comprehensive compendium of the current state of Germany's research infrastructure in the social, economic, and behavioural sciences. In addition, the book presents detailed discussions of the current needs of empirical researchers in these fields and opportunities for future development. The book contains 68 advisory reports by more than 100 internationally recognized authors from a wide range of fields and recommendations by the German Data Forum (RatSWD) on how to improve the research infrastructure so as to create conditions ideal for making Germany's social, economic, and behavioral sciences more innovative and internationally competitive. The German Data Forum (RatSWD) has discussed the broad spectrum of issues covered by these advisory reports extensively, and has developed general recommendations on how to expand the research infrastructure to meet the needs of scholars in the social and economic sciences

The Trend Toward Preventative Medicine Through Health and Fitness Programs in the Public and Private Sectors

Taking Care of the Employees While Cutting Health Care Costs: Can the Private and Public Secotrs Learn from one Another? In the face of skyrocketing health care costs for employees in both the public and private sector, each must find ways to contain these costs while providing their employees adequate care. The trend has been toward the practice of preventative medicine. Each sector has experimented with and developed different programs for employee health that must operate within the particular constraints of the sector. Public sector examples to be used in the study are public health programs and the old and established Air Force system of medical care and fitness. Private secotr comparison groups will be the programs of Coors, Johnson and Johnson, General Electric, Cullinet Software, and Proctor and Gamble. Each sector has their own organization-employee relationships in which they derive their particular program. The public and private sectors have different operating budgets and methods of accountability. In the face of constraints such as the political environment, size of available budgets, and degree of support for comprehensive health and fitness programs, I will try to pinpoint methods that each sector could derive from the other. I. Backround of the Trend Toward Fitness and Preventative Medicine. II. Public Sector Programs. III. Private Sector Programs. IV. Budgeting and Evaluation Techniques. V. What Can Both Sectors Learn From One Another

Solar Panel Efficacy vs. Altitude in an Urban City Environment

In light of current issues of global warming, pollution, and fossil fuel depletion, alternative and renewable energy sources are increasing in desirability. Among these, solar energy is a popular option. However, it is hypothesized that particulate pollution in urban atmospheres limits photovoltaic (PV) efficacy both in accumulated grime and also in altitude via sunlight attenuation. The objective of this study is to measure photovoltaic power output near solar noon at multiple heights within a city environment to determine the influence of altitude on power output. Building rooftops between 200 and 800 feet were sampled simultaneously with a ground level control within a broad university courtyard. Days having no cloud cover were preferentially chosen. Other factors to consider include the “urban heat island” effect and water vapor in the air, so meteorological parameters were measured simultaneously to reduce confounding errors. Multiple repeated tests were conducted to increase confidence, especially since the effect was anticipated to be small in magnitude. Additionally, students affiliated with the project completed surveys to assess how their involvement impacted their learning of experimental design and procedures. Students who chose not to participate were also surveyed to provide a control group. Comparisons in the data are drawn on a power to ambient light ratio to minimize bias between the PV panels used for testing. Preliminary analysis indicates the effect of altitude is minimal within the parameters of this study. Analysis of our data did not significantly demonstrate an improvement in solar productivity at increased altitudes. However, the rigorous test methodology developed provides a means for quantitative analysis in cities with greater levels of pollution relative to the city tested. The survey of students indicated a positive correlation between participation in the project and the amount students felt they learned during the process

A SURVEY OF FAILURES IN THE SOFTWARE DEVELOPMENT PROCESS

Software development is one of the most important worldwide industries and continues to grow. To deal with this challenge, organizations are adopting ever more tools and methodologies. However, software development projects are still failing in meeting time, budget and functional requirements. This study provides insights on the failures faced by software development organizations regarding their processes, the reasons leading to these failures, and initiatives taken to cope with them. A research methodology was used to gather and compare results from a literature review and semi-structured interviews. We learnt that there are more failures in Management activities, although they were not often reported, while failures in Requirements Engineering and Software Testing are less in number but more frequently reported. Lack of communication, lack of time for improvements and appropriate testing, and poor requirements and functionalities specification were the mostly reported failures. Furthermore, we learnt that organizations are not implementing any initiative to address these failures, although they suggested solutions

Third International Symposium on Space Mission Operations and Ground Data Systems, part 2

Under the theme of 'Opportunities in Ground Data Systems for High Efficiency Operations of Space Missions,' the SpaceOps '94 symposium included presentations of more than 150 technical papers spanning five topic areas: Mission Management, Operations, Data Management, System Development, and Systems Engineering. The symposium papers focus on improvements in the efficiency, effectiveness, and quality of data acquisition, ground systems, and mission operations. New technology, methods, and human systems are discussed. Accomplishments are also reported in the application of information systems to improve data retrieval, reporting, and archiving; the management of human factors; the use of telescience and teleoperations; and the design and implementation of logistics support for mission operations. This volume covers expert systems, systems development tools and approaches, and systems engineering issues