71,981 research outputs found
Combining behavioural types with security analysis
Today's software systems are highly distributed and interconnected, and they
increasingly rely on communication to achieve their goals; due to their
societal importance, security and trustworthiness are crucial aspects for the
correctness of these systems. Behavioural types, which extend data types by
describing also the structured behaviour of programs, are a widely studied
approach to the enforcement of correctness properties in communicating systems.
This paper offers a unified overview of proposals based on behavioural types
which are aimed at the analysis of security properties
Managing in conflict: How actors distribute conflict in an industrial network
IMP researchers have examined conflict as a threat to established business relationships and commercial exchanges, drawing on theories and concepts developed in organization studies. We examine cases of conflict in relationships from the oil and gas industry's service sector, focusing on conflicts of interest and resources, and conflict as experienced by actors. Through a comparative case study design, we propose an explanation of how actors manage conflict and manage in conflict given that they tend to value and maintain relationships beyond episodes of exchange. We consider conflicts in relationships from a network perspective, showing that actors experienced these while adapting to changes in their business setting, modifying their roles in that network. By identifying conflict with the organizing forms of relationship and network, we show how actors formulate conflict through pursuing and combining a number of strategies, distributing the conflict across an enlarged network
'It was absolute hell': inside the private prison
As part of a broader current of critique of the economic and political dynamics of prison privatisation - a critique that initially emanated from the USA - this paper focuses on Scotland and on research carried out at its then only private penal institution, HMP Kilmarnock. The authors dismantle the government's case for extending prison privatisation by drilling deep into the experience of Kilmarnock and demonstrating the deleterious effects of marketisation for prison officers and prisoners alike. Degraded pay and conditions and systemic understaffing corroded morale, exposed staff and inmates to risk, and contributed to massive officer turnover. Compelling evidence comes from sources ordinarily unavailable to critical researchers,such as internal company and government documentation
FastPay: High-Performance Byzantine Fault Tolerant Settlement
FastPay allows a set of distributed authorities, some of which are Byzantine,
to maintain a high-integrity and availability settlement system for pre-funded
payments. It can be used to settle payments in a native unit of value
(crypto-currency), or as a financial side-infrastructure to support retail
payments in fiat currencies. FastPay is based on Byzantine Consistent Broadcast
as its core primitive, foregoing the expenses of full atomic commit channels
(consensus). The resulting system has low-latency for both confirmation and
payment finality. Remarkably, each authority can be sharded across many
machines to allow unbounded horizontal scalability. Our experiments demonstrate
intra-continental confirmation latency of less than 100ms, making FastPay
applicable to point of sale payments. In laboratory environments, we achieve
over 80,000 transactions per second with 20 authorities---surpassing the
requirements of current retail card payment networks, while significantly
increasing their robustness
Ethics in a Global Society (Chapter 12 of Organizational Ethics: A Practical Approach
Globalization is having a dramatic impact on life in the 21st century. We inhabit a global society knit together by free trade, international travel, immigration, satellite communication systems, and the Internet. In this interconnected world, ethical responsibilities extend beyond national boundaries. Decisions about raw materials, manufacturing, outsourcing, farm subsidies, investments, marketing strategies, suppliers, safety standards, and energy use made in one country have ramifications for residents of other parts of the world. Organizational citizenship is now played out on a global stage. Businesses, in particular, are being urged to take on a larger role in solving the world\u27s social problems
Performance criteria guideline for three explosion protection methods of electrical equipment rated up to 15,000 volts AC
The Bureau of Mines, U.S. Department of the Interior, is reviewing explosion protection methods for use in gassy coal mines. This performance criteria guideline is an evaluation of three explosion protection methods of machines electrically powered with voltages up to 15,000 volts ac. A sufficient amount of basic research has been accomplished to verify that the explosion proof and pressurized enclosure methods can provide adequate explosion protection with the present state of the art up to 15,000 volts ac. This routine application of the potted enclosure as a stand alone protection method requires further investigation or development in order to clarify performance criteria and verification certification requirements. An extensive literature search, a series of high voltage tests, and a design evaluation of the three explosion protection methods indicate that the explosion proof, pressurized, and potted enclosures can all be used to enclose up to 15,000 volts ac
Lifecycle Management of Automotive Safety-Critical Over the Air Updates: A Systems Approach
With the increasing importance of Over The Air (OTA) updates in the automotive field, maintaining safety standards becomes more challenging as frequent incremental changes of embedded software are regularly integrated into a wide range of vehicle variants. This necessitates new processes and methodologies with a holistic view on the backend, where the updates are developed and released
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