A smart city applies information and communication technologies (ICTs) to planning, designing, building, and operating city infrastructures in order to improve life quality and economy. It covers many aspects in a city such as utility, public transportation, education, healthcare, entertainment,...

We investigate the efficiency of the market for 5 year call options which are traded on the European Options Exchange in Amsterdam.We study both delta, delta-vega, and delta-gamma neutral arbitrage portfolios.We do not detect any serious inefficiencies in the market for long term call...

Humans remain exposed to ongoing security risks. Energy security is closely associated with human life and productive activity and is strongly related to the increasing number of natural extreme events over the past few decades. Therefore, finding the exact relationship between two factors will...

We consider the financial planning problem of a retiree wishing to enter a retirement village at a future uncertain date. The date of entry is determined by the retiree’s utility and bequest maximisation problem within the context of uncertain future health states. In addition, the retiree...

Alkali metal Na is beneficial to the performance of CuInGaSSe thin film solar cells. This work studies the addition and optimization of a sputtering SiO 2 barrier layer on the SLG to optimize the Na content that diffuses into the absorber layer from the SLG. The resulting Se content and...