N ext Generation Gravity Missions (NGGMs) expected to be launched in the mid-term future have set high anticipations for an enhanced monitoring of mass transport in the Earth system, establishing their products applicable to new scientific fields and serving societal needs. The European Space Agency (ESA) has issued several studies on concepts of NGGMs. Following this tradition, the project “Additional Constellations & Scientific Analysis Studies of the Next Generation Gravity Mission” picks up where the previous study ESA-SC4MGV left off. One of the ESA-ADDCON project objectives is to investigate the impact of different orbit configurations and parameters on the gravity field retrieval. Given a two-pair Bender-type constellation, consisting of a polar and an inclined pair, choices for orbit design such as the altitude profile during mission lifetime, the length of retrieval period, the value of sub-cycles and the choice of a prograde over a retrograde orbit are investigated. Moreover, the problem of aliasing due to ocean tide model inaccuracies, as well as methods for mitigating their effect on gravity field solutions are investigated in the context of NGGMs. The performed simulations make use of the gravity field processing approach where low-resolution gravity field solutions are co-parameterized in short-term periods (e.g. daily) together with the long-term solutions (e.g. 11-day solution). This method proved to be beneficial for NGGMs (ESA-SC4MGV project) since the enhanced spatio-temporal sampling enables a selfde- aliasing of high-frequency atmospheric and oceanic signals, which may now be a part of the retrieved signal. The

The concept of an urban consolidation centre (UCC) has been extensively researched. Despite the potential positive environmental and social impact, the main obstacle remains the lack of a sustainable business model. The goal of this paper is to understand how to organize UCC viability as a concept providing environmental and social benefits while at the same time providing a sustainable business model (social and logistical value propositions of multi-beneficial relations between the involved stakeholders). A research framework will be designed to analyse and evaluate financial viable UCCs. The framework consists of four main stream components, namely: organizational integration, revenue streams, key-resource provisioning and buyer-supplier relation. These four types of relations result in the so called ORKB-framework to analyse the created added value. The research framework is applied and evaluated for the following urban consolidation centres: Regent Street in London, Bristol/Bath, and BinnenStadService in Nijmegen. With the development of the framework we want to reveal some of the uniqueness for each specific situation in order to address the UCC-environment more effectively when the dynamics regarding value creation and the needs of the involved stakeholders are better understood.