Decision Support for Selection of Cloud Service Providers

Clear and consistent assessment of the variouscapabilities of cloud service providers (CSPs) will become anessential factor in deciding on which CSPs to use in the future,particularly as cloud service provision expands futher into moresensitive and regulated areas. This paper describes an approachthat is useful in this regard. Specifically, we describe a mechanismin which context is gathered relating to CSPs; this is inputted to arule-based system and decisions are output about the suitabilityof each CSP, including an analysis of privacy and security riskand recommended stipulations to be taken into account whennegotiating contracts and SLAs

Putting the "Account" into Cloud Accountability

Security concerns are often cited as the most prominent reason for not using cloud computing, but customers of cloud users, especially end-users, frequently do not understand the need to control access to personal information. On the other hand, some users might understand the risk, and yet have inadequate means to address it. In order to make the Cloud a viable alternative for all, accountability of the service providers is key, and with the advent of the EU General Data Protection Regulation (GDPR), ignoring accountability is something providers in the EU market will do at their peril. To be able to hold cloud service providers accountable for how they manage personal, sensitive and confidential information, there is a need for mechanisms that can mitigate risk, identify emerging risks, monitor policy violations, manage any incidents, and provide redress. We believe that being able to offer accountability as part of the service provision will represent a competitive edge for service providers catering to discerning cloud customers, also outside the GDPR sphere of influence. This paper will outline the fundamentals of accountability, and provide more details on what the actual "account'' is all about.publishedVersio

Compound-specific radiocarbon dating of the varved Holocene sedimentary record of Saanich Inlet, Canada

Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 19 (2004): PA2012, doi:10.1029/2003PA000927.The radiocarbon contents of various biomarkers extracted from the varve-counted sediments of Saanich Inlet, Canada, were determined to assess their applicability for dating purposes. Calibrated ages obtained from the marine planktonic archaeal biomarker crenarchaeol compared favorably with varve-count ages. The same conclusion could be drawn for a more general archaeal biomarker (GDGT-0), although this biomarker proved to be less reliable due to its less-specific origin. The results also lend support to earlier indications that marine crenarchaeota use dissolved inorganic carbon (DIC) as their carbon source. The average reservoir age offset ΔR of 430 years, determined using the crenarchaeol radiocarbon ages, varied by ±110 years. This may be caused by natural variations in ocean-atmosphere mixing or upwelling at the NE Pacific coast but variability may also be due to an inconsistency in the marine calibration curve when used at sites with high reservoir ages.This work was supported by the Netherlands Organization for Scientific Research (NWO) and NSF grants OCE-9907129 and OCE-0137005 (Eglinton)

The worldwide marine radiocarbon reservoir effect: definitions, mechanisms, and prospects

When a carbon reservoir has a lower radiocarbon content than the atmosphere, this is referred to as a reservoir effect. This is expressed as an offset between the radiocarbon ages of samples from the two reservoirs at a single point in time. The marine reservoir effect (MRE) has been a major concern in the radiocarbon community, as it introduces an additional source of error that is often difficult to accurately quantify. For this reason, researchers are often reluctant to date marine material where they have another option. The influence of this phenomenon makes the study of the MRE important for a broad range of applications. The advent of Accelerator Mass Spectrometry (AMS) has reduced sample size requirements and increased measurement precision, in turn increasing the number of studies seeking to measure marine samples. These studies rely on overcoming the influence of the MRE on marine radiocarbon dates through the worldwide quantification of the local parameter ΔR, that is, the local variation from the global average MRE. Furthermore, the strong dependence on ocean dynamics makes the MRE a useful indicator for changes in oceanic circulation, carbon exchange between reservoirs, and the fate of atmospheric CO2, all of which impact Earth's climate. This article explores data from the Marine Reservoir Database and reviews the place of natural radiocarbon in oceanic records, focusing on key questions (e.g., changes in ocean dynamics) that have been answered by MRE studies and on their application to different subjects