8,541 research outputs found

    Space Resources and Space Settlements

    Get PDF
    The technical papers from the five tasks groups that took part in the 1977 Ames Summer Study on Space Settlements and Industrialization Using Nonterrestrial Materials are presented. The papers are presented under the following general topics: (1) research needs for regenerative life-support systems; (2) habitat design; (3) dynamics and design of electromagnetic mass drivers; (4) asteroids as resources for space manufacturing; and (5) processing of nonterrestrial materials

    Context Aware Computing for The Internet of Things: A Survey

    Get PDF
    As we are moving towards the Internet of Things (IoT), the number of sensors deployed around the world is growing at a rapid pace. Market research has shown a significant growth of sensor deployments over the past decade and has predicted a significant increment of the growth rate in the future. These sensors continuously generate enormous amounts of data. However, in order to add value to raw sensor data we need to understand it. Collection, modelling, reasoning, and distribution of context in relation to sensor data plays critical role in this challenge. Context-aware computing has proven to be successful in understanding sensor data. In this paper, we survey context awareness from an IoT perspective. We present the necessary background by introducing the IoT paradigm and context-aware fundamentals at the beginning. Then we provide an in-depth analysis of context life cycle. We evaluate a subset of projects (50) which represent the majority of research and commercial solutions proposed in the field of context-aware computing conducted over the last decade (2001-2011) based on our own taxonomy. Finally, based on our evaluation, we highlight the lessons to be learnt from the past and some possible directions for future research. The survey addresses a broad range of techniques, methods, models, functionalities, systems, applications, and middleware solutions related to context awareness and IoT. Our goal is not only to analyse, compare and consolidate past research work but also to appreciate their findings and discuss their applicability towards the IoT.Comment: IEEE Communications Surveys & Tutorials Journal, 201

    Building Information Modeling (BIM) for existing buildings - literature review and future needs

    Get PDF
    Abstract not availableRebekka Volk, Julian Stengel, Frank Schultman

    Progress in Material Handling Research: 2012

    Get PDF
    Table of Content

    An Earth Orbiting Satellite Service and Repair Facility

    Get PDF
    A conceptual design was produced for the Geosynchronous Satellite Servicing Platform (GSSP), an orbital facility capable of repairing and servicing satellites in geosynchronous orbit. The GSSP is a man-tended platform, which consists of a habitation module, operations module, service bay and truss assembly. This design review includes an analysis of life support systems, thermal and power requirements, robotic and automated systems, control methods and navigation, and communications systems. The GSSP will utilize existing technology available at the time of construction, focusing mainly on modifying and integrating existing systems. The entire facility, along with two satellite retrieval vehicles (SRV), will be placed in geosynchronous orbit by the Advanced Launch System. The SRV will be used to ferry satellites to and from the GSSP. Technicians will be transferred from Earth to the GSSP and back in an Apollo-derived Crew Transfer Capsule (CTC). These missions will use advanced telerobotic equipment to inspect and service satellites. Four of these missions are tentatively scheduled per year. At this rate, the GSSP will service over 650 satelites during the projected 25 year lifespan

    Sustainable exhibit design: guidelines for designers of small scale interactive and travelling exhibits

    Get PDF
    This study was commissioned as part of Lincolnshire County Council’s FLOWS ‘2B’ Information and Symbols Project and UK match funding for this particular FLOWS Project has been provided by East Midlands Development Agency. The aim of FLOWS is to improve the sustainability of development in flood risk areas through development of ‘good practice’, by improved integration of flood risk information into decision-support systems for spatial planning and water management. FLOWS involves over 40 individual projects which are based in four Work Packages. Lincolnshire County Council is jointly leading Work Package 3 (Spatial Planning) and is also leading on Projects in Work Package 2 (Public Perception/Dissemination). This study has been produced as part of Lincolnshire County Council’s ‘FLOWS 2B Information and Symbols Project’ and in the wider context, is focussing on raising public awareness of flooding and flood risk by exploring innovative methods of disseminating information on the subject of flood risk to the public. This project involves the production of interactive exhibits aimed at raising the awareness of flood risk in Lincolnshire and is a partnership between Lincolnshire County Council and the School of Architecture at the University of Lincoln. A study focussing on creating sustainable exhibitions has been undertaken via the University of Lincoln that will directly inform the FLOWS exhibits. As detailed in the project brief, this study on Sustainable Exhibit Design will investigate best practice in sustainable exhibit design and produce a report setting out guidelines for designers of small interactive and travelling exhibits, guidelines which are directly applicable to the proposed FLOWS exhibit. The report will form a contribution to exhibition design knowledge through wider distribution via the University of Lincoln and FLOWS websites and a conference presentation

    Guidelines for the Provision of Garbage Reception Facilities at Ports Under MARPOL Annex V

    Get PDF
    This report offers guidelines for the provision of adequate port reception facilities for vessel-generated garbage under the requirements of Annex V of the International Convention for the Prevention of Pollution From Ships, 1973 (MARPOL 73/78), Regulations for the Prevention of Pollution by Garbage from Ships. MARPOL Annex V prohibits at-sea disposal of plastic materials from vessels, and specifies the distance from shore at which other materials may be dumped. Annex V also requires the provision of port reception facilities for garbage, but it does not specify these facilities or how they are to be provided. Since the at-sea dumping restrictions apply to all vessels, the reception facility requirement applies to all ports, terminals, and marinas that serve vessels. These guidelines were prepared to assist port owners and operators in meeting their obligation to provide adequate reception facilities for garbage. The report synthesizes available information and draws upon experience from the first years ofimplementation of MARPOL Annex V. (PDF file contains 55 pages.

    Management and control of self-replicating systems: A systems model

    Get PDF
    In 1980, a conceptual engineering approach to self-replicating systems was achieved. The design was based on von Newmann's kinematic version of self-replicating automata. The systems management and control and the organization of the control elements are reported. After developing the functional requirements of such a system, a hierarchy of three management and control levels is described. These are an autonomous, an external, and an intelligent management and control system. Systems recycling, systems specialization, and information replication are discussed
    • …
    corecore