Rabindra Nepal

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Stability of skyrmion lattices and symmetries of quasi-two-dimensional chiral magnets" (2016). Recently there has been substantial interest in realizations of skyrmions, in particular in quasi-two-dimensional (2D) systems due to increased stability resulting from reduced dimensionality. A stable skyrmion, representing the smallest realizable magnetic(More)
The world-wide electricity sector reforms of the early 1990s have revealed the complexities of introducing market driven reforms and making them work in network and infrastructure industries. This paper reflects on the experience to date with the process and outcomes of marketbased electricity reforms in less-developed, transition and developed economies.(More)
In 2007, Germany changed network access regulation in the natural gas sector and introduced a so-called entry–exit system. The spot market effects of the reregulation remain to be examined. We use cointegration analysis and a state space model with time-varying coefficients to study the development of natural gas spot prices in the two major trading hubs in(More)
Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in International Journal of Critical Infrastructure Protection. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this(More)
The electricity systems have a central role to play in the transition towards a low carbon economy and integration of renewable energy sources in the European Union. However, the European electricity networks face a diverse set of existing and new risks that can hamper the energy security of member countries. This paper aims to qualitatively and(More)
The incentive regulation of costs related to physical and cyber security in electricity networks is an important but relatively unexplored and ambiguous issue. These costs can be part of a cost efficiency benchmarking or alternatively dealt separately. This paper discusses the issues and proposes on the options for incorporating network security costs(More)
What effect does firm structure have on the product service quality on offer? We answer this question by empirically assessing the impacts of complete vertical separation, such as ownership unbundling, on the quality of service delivered by a liberalized network industry. Electricity distribution utilities in New Zealand are considered for this purpose. The(More)
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