Context-aware adaptation in DySCAS

DySCAS is a dynamically self-configuring middleware for automotive control systems. The addition of autonomic, context-aware dynamic configuration to automotive control systems brings a potential for a wide range of benefits in terms of robustness, flexibility, upgrading etc. However, the automotive systems represent a particularly challenging domain for the deployment of autonomics concepts, having a combination of real-time performance constraints, severe resource limitations, safety-critical aspects and cost pressures. For these reasons current systems are statically configured. This paper describes the dynamic run-time configuration aspects of DySCAS and focuses on the extent to which context-aware adaptation has been achieved in DySCAS, and the ways in which the various design and implementation challenges are met

A Hierarchical Core Reference Ontology for New Technology Insertion Design in Long Life Cycle, Complex Mission Critical Systems

Organizations, including government, commercial and others, face numerous challenges in maintaining and upgrading long life-cycle, complex, mission critical systems. Maintaining and upgrading these systems requires the insertion and integration of new technology to avoid obsolescence of hardware software, and human skills, to improve performance, to maintain and improve security, and to extend useful life. This is particularly true of information technology (IT) intensive systems. The lack of a coherent body of knowledge to organize new technology insertion theory and practice is a significant contributor to this difficulty. This research organized the existing design, technology road mapping, obsolescence, and sustainability literature into an ontology of theory and application as the foundation for a technology design and technology insertion design hierarchical core reference ontology and laid the foundation for body of knowledge that better integrates the new technology insertion problem into the technology design architecture

Software Implemented Fault-Tolerant (SIFT) user's guide

Program development for a Software Implemented Fault Tolerant (SIFT) computer system is accomplished in the NASA LaRC AIRLAB facility using a DEC VAX-11 to interface with eight Bendix BDX 930 flight control processors. The interface software which provides this SIFT program development capability was developed by AIRLAB personnel. This technical memorandum describes the application and design of this software in detail, and is intended to assist both the user in performance of SIFT research and the systems programmer responsible for maintaining and/or upgrading the SIFT programming environment

Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis

Photobioelectrocatalysis has recently attracted particular research interest owing to the possibility to achieve sunlight-driven biosynthesis, biosensing, power generation, and other niche applications. However, physiological incompatibilities between biohybrid components lead to poor electrical contact at the biotic-biotic and biotic-abiotic interfaces. Establishing an electrochemical communication between these different interfaces, particularly the biocatalyst-electrode interface, is critical for the performance of the photobioelectrocatalytic system. While different artificial redox mediating approaches spanning across interdisciplinary research fields have been developed in order to electrically wire biohybrid components during bioelectrocatalysis, a systematic understanding on physicochemical modulation of artificial redox mediators is further required. Herein, we review and discuss the use of diffusible redox mediators and redox polymer-based approaches in artificial redox-mediating systems, with a focus on photobioelectrocatalysis. The future possibilities of artificial redox mediator system designs are also discussed within the purview of present needs and existing research breadth

Hydraulic Design Algorithms for Upgrading and Enhancing Water Distribution Systems

The primary objective of this work was to develop algorithms for directly determining design characteristics for effectively enhancing, modifying or adding to existing water distribution systems. This is accomplished by modifying the basic hydraulic network equations to explicitly determine required design parameters to just meet specified conditions. Initially work was completed on directly determining pipeline diameters and directly determining pipeline and network resistance characteristics. This work was published in technical journals and established the feasibility of the approach but did not demonstrate the scope and versitility of the proposed approach. In this report a general approach is developed and tested to demonstrate the wide range of capabilities possible. Numerous examples are presented which illustrate the scope of calculations possible and demonstrate the ability of the approach to meet the objectives

System concept for small-scale biological methanation using electrolysis and trickle bed reactor

In the present study, the concept of a biological H2 methanation (BHM) system was created for four cases of scale which are determined by electrolyser scale. The system design is aimed to upgrade existing biogas to vehicle fuel quality, with a concentration of CH4 above 95% and H2S removal. The cases of scale and type of electrolyser are: 4.8 kW AEM electrolyser, 20 kW AEL electrolyser, 100 kWe AEL electrolyser and 550 kWe PEM electrolyser. Each case of scale can upgrade a biogas flow of 0.7, 2.4, 14.5 and 73.9 Nm3 respectively. A trickle bed reactor design at thermophilic conditions was chosen for the systems methanation process. A MATLAB model was created to simulate energy- and mass flows for the system. The simulation also includes economic parameters such as OPEX and CAPEX. Results of the simulation are presented as levelized cost of CH4 production (€/kWh) and specific CAPEX (€/kWe). Simulations of the system show a high upgrading performance with an output gas of above 95% CH4 with H2S removal. The system also increases CH4 yield of 60%. The system performs comparatively to traditional upgrading method. The economic results show that the system has an upgrading cost of 0.37 to 0.089 €/kWh and specific CAPEX of 3830 to 22 500 €/kW. The system cannot be considered economically competitive to traditional upgrading when no additional cost reductions are applied. The concept of upgrading by BHM also reduces carbon emissions from biogas production giving the system a good chance of receiving subsidies from greenhouse gas reduction initiatives. Larger scales of the system can then reach competitive upgrading costs by utilizing subsidies, electricity price reductions and heat recovery

Patterns of industrial upgrading in the clothing industry in Poland and Romania

This paper aims at understanding the impact of industrial networks with foreign and other domestic organizations on industrial upgrading of the clothing companies in Poland and Romania over the past decade. The research presented in this paper is based on interviews carried out in ten large clothing companies in Poland and Romania. The paper shows that there are differing structural influences of buyer-driven global networks on the industrial upgrading of Polish and Romanian clothing firms. Taking these global buyers as exemplars to themselves, Polish and Romanian clothing firms follow relatively different upgrading patterns, experiencing more or less the same network relationships with foreign buyers whereas differing networks with other organizations in their countries. As the level of accumulation of knowledge and skills differs among the firms, the pace and level of upgrading differs too. This paper has proposed a stylized pattern but it should not be taken as inevitable since it also tries to show that some firms might skip some sequences. As a consequence, it is not a question of the positioning of the countries on a single upgrading ladder, but more accurately it is different upgrading ladders that have been climbed in each country. There is no single pattern for all of them

An upgraded ultra-high vacuum magnetron-sputtering system for high-versatility and software-controlled deposition

Magnetron sputtering is a widely used physical vapor deposition technique. Reactive sputtering is used for the deposition of, e.g, oxides, nitrides and carbides. In fundamental research, versatility is essential when designing or upgrading a deposition chamber. Furthermore, automated deposition systems are the norm in industrial production, but relatively uncommon in laboratory-scale systems used primarily for fundamental research. Combining automatization and computerized control with the required versatility for fundamental research constitutes a challenge in designing, developing, and upgrading laboratory deposition systems. The present article provides a detailed description of the design of a lab-scale deposition chamber for magnetron sputtering used for the deposition of metallic, oxide, nitride and oxynitride films with automated controls, dc or pulsed bias, and combined with a coil to enhance the plasma density near the substrate. LabVIEW software (provided as Supplementary Information) has been developed for a high degree of computerized or automated control of hardware and processes control and logging of process details.Comment: 17 pages, 8 figure

Subsidiary capability upgrading and parent-subsidiary relationship: insights from a Chinese acquisition in the UK

Purpose: - This study aims to explore capability upgrading of EMNE’s subsidiaries in developed countries and how the parent-subsidiary relationship influences such upgrading. Design/methodology/approach: - The study adopts an interdisciplinary approach to capability upgrading of EMNEs subsidiaries in developed countries. It employs a single case study to explore this under-research area. Finding: - the analysis challenges the orthodox view and suggests broad based capability upgrading has taken place in the EMNE acquired subsidiaries ranging from product, process, functional to intersectoral. In addition, the capability upgrading was contingent on the degree of subsidiary autonomy and subsidiary mandates. Originality/value: - This study represents one of the first to examine capability upgrading and parent-subsidiary relationship in the context of EMNEs’ internationalisation activities