CD-ROM networking in libraries : an investigation

There is a growing awareness of the advantages of the applications of CD-ROM networking in libraries. The databases can be effectively shared among multi-users simultaneously or within the library or the organisation or several libraries. The CD-ROM technology is discussed to provide basic understanding of the technology. This will further improve the understanding of CD-ROM networking. The CD-ROM networking technology is thoroughly discussed to provide an in-depth information of the technology. The cabling system; network topologies; CD-ROM network software; network operating system; case studies of its application in various libraries etc. are investigated

Public Safety Radio System

The goal of this project was to create a Public Safety Integration Center (PSIC). The PSIC is a radio laboratory whose goal is to encourage the betterment of public safety communications and interoperability. It allows students to perform radio related projects, hardware manufacturers to demonstrate their equipment, and radio equipment to be tested with respect to integration and interoperability. In order to achieve this goal, equipment donated by SAIC was studied, reverse engineered, and reconfigured to suit the needs of the PSIC

The Computerized integrated smart home

The emergence of multiple home computers and the need to network them together are dramatically increasing in our society. At the same time, more and more methods of networking home computers are being developed. As our society becomes more reliant on using digital devices in our everyday lives, the possibility of a smart home can actually become a reality. My thesis will research currently available home automation products, and will propose a complete smart home system using current and possible future technologies. It will also include the various services that can be offered via home networking and automation. There are several component areas that must be considered and combined to create the complete system. Some of these areas include communications, device control, temperature, security, and most important, the user interface. One of the main components of the system will be the concept of a console , which will be the primary interface. My thesis will explore different kinds of consoles using existing and proposed technology, how they can be internetworked together to form a complete communications system, and how they can be connected to the outside world. The feasibility of offering home automation services using these consoles is another area that will be explored. For instance, can a home be considered secure if doors and locks are automated and integrated into the smart home? With the smart home, a user should be able to enter the house without a key, solely by communicating with the system. It could even be possible to lock a door from any console within the house, in case the user forgot. I believe the smart home is becoming a reality, and can propel our society into a new way of life as an advanced civilization. My thesis will attempt to provide various ways of making it a reality using current and possible future technologies. Although it will not provide a concrete example of a complete smart home system, that area of expansion exists for future research. Perhaps one day it will become a standard in new home development, and will change how we perform everyday tasks at home

Leveraging Kubernetes in Edge-Native Cable Access Convergence

Public clouds provide infrastructure services and deployment frameworks for modern cloud-native applications. As the cloud-native paradigm has matured, containerization, orchestration and Kubernetes have become its fundamental building blocks. For the next step of cloud-native, an interest to extend it to the edge computing is emerging. Primary reasons for this are low-latency use cases and the desire to have uniformity in cloud-edge continuum. Cable access networks as specialized type of edge networks are not exception here. As the cable industry transitions to distributed architectures and plans the next steps to virtualize its on-premise network functions, there are opportunities to achieve synergy advantages from convergence of access technologies and services. Distributed cable networks deploy resource-constrained devices like RPDs and RMDs deep in the edge networks. These devices can be redesigned to support more than one access technology and to provide computing services for other edge tenants with MEC-like architectures. Both of these cases benefit from virtualization. It is here where cable access convergence and cloud-native transition to edge-native intersect. However, adapting cloud-native in the edge presents a challenge, since cloud-native container runtimes and native Kubernetes are not optimal solutions in diverse edge environments. Therefore, this thesis takes as its goal to describe current landscape of lightweight cloud-native runtimes and tools targeting the edge. While edge-native as a concept is taking its first steps, tools like KubeEdge, K3s and Virtual Kubelet can be seen as the most mature reference projects for edge-compatible solution types. Furthermore, as the container runtimes are not yet fully edge-ready, WebAssembly seems like a promising alternative runtime for lightweight, portable and secure Kubernetes compatible workloads

Design and construction of a low earth orbit satellite ground station

Thesis (M.S.) University of Alaska Fairbanks, 2000This thesis describes the design and construction of a satellite ground station constructed in support of the Citizen Explorer Program. The University of Alaska Fairbanks was chosen to participate in this program due to its latitude that gives it excellent access to polar-orbiting satellites. The advantage that higher latitudes have in accessing low earth orbiting satellites is examined. It is demonstrated that Fairbanks, Alaska, has roughly twice the access to polar orbiting satellites than the mid-latitudes of the contiguous US. Link budgets for the communication system were developed, which led to the construction of helical antennas to communicate with the satellite. Data are presented that demonstrate the antennas, as well as the rest of the satellite tracking system, functioned acceptably. The satellite ground station will provide internet access to the spacecraft. The procedure used to test this approach and its results are given, as well as recommendations for future work

A Performance Evaluation of a Homogeneous Wireless Network Using OPNET IT Guru

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Roy Lee Gentry Jr. on November 30, 2005

Electronic instrumentation of coal slurry impoundments for real-time data collection to support automated monitoring

Following the breakthrough and release of coal slurry from the Martin County Coal Corporation impoundment near Inez, Kentucky on October 11, 2000 the United States Congress requested the National Research Council (NRC) to examine ways to reduce these types of accidents. The NRC completed their study titled Coal Waste Impoundments which identified numerous areas of concern and the committee presented recommendations for improving the design, operation, and safety of coal slurry impoundments. This research addresses the National Research Council\u27s findings for introducing state-of-practice electronic instrumentation for monitoring parameters within the embankment and slurry pool area of an impoundment. This research will improve impoundment stability, safety, and environmental compliance monitoring. Previous research performed by West Virginia University (WVU) in 2003 at nineteen coal impoundments within West Virginia indicated no occurrences of electronic instrumentation in use for the real-time collection and emergency warning annunciation of important safety and environmental related parameters. The research identified that coal company operators and their design engineers were not familiar with the new instrumentation equipment and systems.;This research project has been initiated by the National Technology Transfer Center (NTTC) Coal Slurry Impoundment Project which funded WVU for the development of a prototype wireless data collection system for monitoring impoundment performance, safety, and environmental indicators at Eastern Associated Coal Corporation\u27s Rocklick Impoundment located in Greenwood, Boone County, West Virginia. The scientific accomplishments of this research as reported herein include the engineering design, instrument system fabrication, assembly, and field construction of a prototype automatic wireless data collection system for monitoring impoundment performance (weather data, piezometric water levels, pH, Specific Conductance, and Oxidation Reduction Potential)

Control signal transmission through power supply cables of a 3-phase PWM motor

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.Includes bibliographical references (p. 147-148).Modem process control systems often employ accurate position or speed controlled PWM motors, which require feedback data for the drive control loop. Current methods require an independently shielded cable for feedback data transmission. This is due to the fact that high-voltage PWM signals could easily interfere with the feedback signals, which are typically one or more orders of magnitude smaller than typical PWM signals. We propose a "zero-wire" solution, in which the additional feedback cable used is eliminated, and the feedback data is sent simultaneously with the PWM signals in the same motor power conductors. In this study, we first analyzed the characteristics of typical feedback and PWM signals. Additionally, a standard representative motor drive cable was carefully measured and analyzed for its wave transport characteristics. The results lead us to select an RF modulation approach in which we modulate the data signals to 900MHz. The data signals are injected and extracted from the power conductors using feed-through capacitors and high-pass filters. To test the performance of our approach, we build a model system in which simulated PWM signals were applied to a 30m motor power cable fitted with data couplers and 900MHz RF RS232 data modems for modulation.(cont.) Tests with different cables and attenuation were performed and data error rates measured. The error rates for strong RF signals, RSSI (Received Signal Strength Indicator) values higher than -60dBm, were limited by RF modem performance to 0.01%. Error rates did not increase with or without PWM power signals when RSSI values were over -80dBm. A design for transmission of DC power for motor feedback electronics is presented, in which we choose an intermediate frequency carrier at 1MHz to transmit power. The 1MHz signals are injected and extracted through the same feed-through capacitors using band-pass filters. Measurements and simulation have shown that the new feedback data transport system design developed in this project is effective and feasible.by Jose A. Mendez.M.Eng