Notes on Cloud computing principles

This letter provides a review of fundamental distributed systems and economic Cloud computing principles. These principles are frequently deployed in their respective fields, but their inter-dependencies are often neglected. Given that Cloud Computing first and foremost is a new business model, a new model to sell computational resources, the understanding of these concepts is facilitated by treating them in unison. Here, we review some of the most important concepts and how they relate to each other

Ruin Theory for Dynamic Spectrum Allocation in LTE-U Networks

LTE in the unlicensed band (LTE-U) is a promising solution to overcome the scarcity of the wireless spectrum. However, to reap the benefits of LTE-U, it is essential to maintain its effective coexistence with WiFi systems. Such a coexistence, hence, constitutes a major challenge for LTE-U deployment. In this paper, the problem of unlicensed spectrum sharing among WiFi and LTE-U system is studied. In particular, a fair time sharing model based on \emph{ruin theory} is proposed to share redundant spectral resources from the unlicensed band with LTE-U without jeopardizing the performance of the WiFi system. Fairness among both WiFi and LTE-U is maintained by applying the concept of the probability of ruin. In particular, the probability of ruin is used to perform efficient duty-cycle allocation in LTE-U, so as to provide fairness to the WiFi system and maintain certain WiFi performance. Simulation results show that the proposed ruin-based algorithm provides better fairness to the WiFi system as compared to equal duty-cycle sharing among WiFi and LTE-U.Comment: Accepted in IEEE Communications Letters (09-Dec 2018

Can’t Buy Me Rights! The Contractual Structure of Asymmetrical Inter-firm Collaborations

The efficient allocation of control rights in inter-firm collaborations is a widely emphasized issue. In this paper, I empirically identify control rights and the allocation of these rights using a unique survey data set on collaborations between biotechnology and pharmaceutical firms. Fifteen control rights are identified to make up the structure of deals with five rights being the items of contention in deal making (ownership of patents, production, further development of the technology, the right to manage the collaboration, and the right to market universally). I find that the assignment of control rights is related to the bargaining position of firms and incentive issues. Hence, goliaths –pharmaceutical incumbents–subrogate critical rights to the new ventures when the final outcome of the project is depending on the venture’s effort

Agro-biodiversity as natural insurance and the development of financial insurance markets

Agro-biodiversity can provide natural insurance to risk averse farmers. We employ a conceptual ecological-economic model to analyze the choice of agrobiodiversity by risk averse farmers who have access to financial insurance. We study the implications for individually and socially optimal agro-ecosystem managementand policy design when on-farm agro-biodiversity, through ecosystem processes at higher hierarchical levels, generates a positive externality on other farmers. We show that for the individual farmer natural insurance from agro-biodiversty and financial insurance are substitutes. While an improved access to financial insurance leads to lower agro-biodiversity, the eects on the market failure problem (due to the external benefits of on-farm agro-biodiversity) and on welfare are determined by properties of the agro-ecosystem and agro-biodiversity’s external benefits. We derive a specific condition on agro-ecosystem functioning under which, if financial insurance becomes more accessible, welfare in the absence of regulation increases or decreases.agro-biodiversity, ecosystem services, agro-ecosystem management, insurance, risk-aversion, uncertainty

Reflections and outlook for the New Zealand ETS: must uncertain times mean uncertain measures?

This article discusses the development and performance of New Zealand\u27s emissions trading scheme since the report of the Emissions Trading Scheme Review Panel in 2011. Introduction The New Zealand emissions trading scheme (ETS) was introduced by legislation in 2008. The legislated objectives as stated in section 3 of the Climate Change Response Act 2002 are to ‘support and encourage global efforts to reduce the emission of greenhouse gases by (i) assisting New Zealand to meet its international obligations under the [UNFCCC] Convention and the [Kyoto] Protocol; and (ii) reducing New Zealand’s net emissions of those gases to below business-as-usual levels’. Beyond this, the New Zealand government has confirmed three objectives for the ETS: help New Zealand to deliver its ‘fair share’ of international action to reduce emissions, including meeting any international obligations; deliver emission relations in the most cost-effective manner; support efforts to maximise the long-term resilience of the New Zealand economy at least cost. ........ This article discusses the development and performance of the scheme since the report of the Emissions Trading Scheme Review Panel in 2011. In particular, the article presents the results of a survey undertaken by the authors in April 2013 of stakeholders’ perception of the scheme and its performance. The survey was designed and administered by the authors using FluidSurveys software

Natural vs. financial insurance in the management of public-good ecosystems

In the face of uncertainty, ecosystems can provide natural insurance to risk averse users of ecosystem services. We employ a conceptual ecological-economic model to analyze the allocation of (endogenous) risk and ecosystem quality by risk averse ecosystem managers who have access to financial insurances, and study the implications for individually and socially optimal ecosystem management, and policy design. We show that while an improved access to financial insurance leads to lower ecosystem quality, the effect on the free-rider problem and on welfare is determined by ecosystem properties. We derive conditions on ecosystem functioning under which, if financial insurance becomes more accessible, (i) the extent of optimal regulation increases or decreases; and (ii) welfare, in the absence of environmental regulation, increases or decreases.ecosystem quality, ecosystem services, ecosystem management, endogenous environmental risk, insurance, risk-aversion, uncertainty