108,704 research outputs found
Verified boot in embedded systems with hard boot time constraints
No full textThe use of embedded systems in devices, machines, and vehicles which we interact with every day is increasing progressively. In the vehicular industry, we can see such embedded systems in the form of Electronic Control Units (ECUs) which have specific tasks in different areas of the vehicle. In order to coordinate the various embedded systems, usually, a central ECU plays the role of a hub and is equipped with an operating system. Moreover, the central ECU has expanded nowadays to have internet connectivity which raises certain security issues. In this setting, we need to assure the integrity of the operating system against any malicious modifications. According to our threat analysis, this can be done only during the boot-up process; unfortunately, the verification process is time-consuming. Therefore, the verification process poses a serious performance issue since the ECU has certain real-time constraints. In this thesis, we investigate most of the serious threats regarding the Operating System integrity and the boot process as well. Furthermore, we evaluate the state of the art techniques for a verified boot process for a Linux Kernel system. The experiment setup includes general purpose embedded devices with real-time constraints in mind. After the evaluation, we conclude that we cannot implement an adequately secure solution on an inherently non-secure hardware platform; a compromise on security is necessary to meet the real-time constraints. Therefore, we propose that we should consider the security aspect during the design phase of an embedded platform
Development of an Injection Molded Boot Adapter
No full textA boot adapter is an injection moulded polymer component intended to isolate a spark plug in a combustion engine used in heavy vehicles. The boot adapter failed too fast either by cracking or electrical puncture and there were large variations of quality among the produced parts. The aim of this project was to reduce or eliminate the risk for the early function failure of the part by finding the cause of failure and developing effective, easy methods for quality assurance. From gathering data and information from previous testing and employees at the company, a number of hypotheses were set and the most probable once was evaluated through a failure analysis. To find a correlation between an easily measurable parameter and the performance of the piece, a number of tests were preformed where the investigation regarded how the weight of the boot adapter corresponded to its performance both thermally and electrically
Irregular working hours in the airline industry: Work schedule related health outcomes and possibilities for prevention
No full textSmid, T. [Promotor]Beek, A.J. van der [Promotor]Boot, C.R.L. [Copromotor]Hlobil, H. [Copromotor
v. Thffil (H), Boot (J.C.G).
No full textUtree:t; Antwerpen; Marka; (1964). 8, 378 p., figg., tabb. (Marka-Boeken. 9) PVoorspellen en beslissen. Inleiding tot de kwantitatieve economie en operationele researchSeT-57
Boot
No full textPatent for a boot design that contains a counter-support of coil springs while also being inexpensive, durable, and efficient
hook boot
No full texthookLamferman's studded boot? Electrical (telephone) worker's boot? [-]Maybe the loop to pull on.[-] Prob. Pinsent's term for those with hooks around which one quickly loops lacings: old-fashioned.Withdraw [-]Query[-]NOV 15 1978Not UsedNot usedWithdrawnChecked by Jordyn Hughes on Wed 13 May 201
Boot Cleaner.
No full textPatent for a new and improved boot cleaner. This design "affords facilities for readily and conveniently scraping all parts of the boot or shoe. The heel is scraped on [a] semicircular portion located at the top of the arch, the sides of the sole by the arms, the upper hollow of the foot by the projections, [and] the toe by the lower side of the arch or bow" (lines 38-45)
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