34 research outputs found
Peer-to-peer and community-based markets: A comprehensive review
The advent of more proactive consumers, the so-called "prosumers", with
production and storage capabilities, is empowering the consumers and bringing
new opportunities and challenges to the operation of power systems in a market
environment. Recently, a novel proposal for the design and operation of
electricity markets has emerged: these so-called peer-to-peer (P2P) electricity
markets conceptually allow the prosumers to directly share their electrical
energy and investment. Such P2P markets rely on a consumer-centric and
bottom-up perspective by giving the opportunity to consumers to freely choose
the way they are to source their electric energy. A community can also be
formed by prosumers who want to collaborate, or in terms of operational energy
management. This paper contributes with an overview of these new P2P markets
that starts with the motivation, challenges, market designs moving to the
potential future developments in this field, providing recommendations while
considering a test-case
Loss Allocation in Joint Transmission and Distribution Peer-to-Peer Markets
Large deployment of distribute energy resources and the increasing awareness
of end-users towards their energy procurement are challenging current practices
of electricity markets. A change of paradigm, from a top-down hierarchical
approach to a more decentralized framework, has been recently researched, with
market structures relying on multi-bilateral trades among market participants.
In order to guarantee feasibility in power system operation, it is crucial to
rethink the interaction with system operators and the way operational costs are
shared in such decentralized markets. We propose here to include system
operators, both at transmission and distribution level, as active actors of the
market, accounting for power grid constraints and line losses. Moreover, to
avoid market outcomes that discriminate agents for their geographical location,
we analyze loss allocation policies and their impact on market outcomes and
prices.Comment: Submitted to "IEEE Transactions on Power Systems" on January 15, 2020
- Revised on May 6, 2020 and on August 6, 2020 - Accepted on September 13,
202
Technological Management of Public Services Based on the DMAIC Method Applying Theory U
This study uses a qualitative case study based on technology management in public services, drawing on the background of a personnel management department. The analysis was based on the concept of the DMAIC method. This approach was chosen due to the obvious need for innovative practices to achieve improved results. The study sought to answer the following question: how can technology management impact on the sector\u27s efficiency study? To answer the question, this studyâs main objective is to study the technological production management focused on public service units; and specific objectives characterize the technology management strategy of the search sector (1), make a SWOT analysis of the practices and procedures adopted in the sector under study (2) and suggest managerial innovation considering the DMAIC method, and applying Theory U (3). As a result, it was possible to recognize that the technology management strategy focuses on the organizational and internal variables with critical enabling innovative proposals in the production process. This study is of interest to public officials committed to performance excellence in administrative units under their responsibility. This is another contribution to students, researchers and others involved with the management area.
New genetic loci link adipose and insulin biology to body fat distribution.
Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (PÂ <Â 5Â ĂÂ 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms
Grecs et indigĂšnes de la Catalogne Ă la mer Noire
Le programme de travail qui aboutit Ă ce livre sâinscrit dans le cadre du rĂ©seau dâexcellence europĂ©en Ramses2, initiĂ© par la Maison mĂ©diterranĂ©enne des sciences de lâhomme. Une demi-douzaine de tables rondes ont rĂ©uni entre 2006 et 2008, dâun bout Ă lâautre de la MĂ©diterranĂ©e (Ă EmpĂșries, Aix-en-Provence, Palerme, Naples, AthĂšnes), quelque soixante-dix chercheurs essentiellement français, italiens et espagnols, mais aussi anglais, grecs, bulgares, roumains, canadiens et russes. Il sâagissait dâĂ©tudier les rapports dâacculturation entre colons grecs et populations indigĂšnes, en tenant compte des diffĂ©rences gĂ©ographiques et chronologiques mais aussi de lâhistoriographie et des habitudes de recherche des diverses institutions. Les nombreuses communications qui ont jalonnĂ© les six tables rondes sont ici la plupart du temps prĂ©cĂ©dĂ©es de textes introductifs. Une premiĂšre partie, consacrĂ©e aux approches rĂ©gionales, permet dâillustrer lâĂ©tat de la recherche dans quelques rĂ©gions choisies (autour dâEmpuries, dâHimĂšre, de Marseille, de VĂ©lia, en Thrace et en mer Noire). La seconde partie, thĂ©matique, aborde un certain nombre de thĂšmes de recherche dans les rĂ©gions prĂ©cĂ©dentes, mais aussi dans dâautres rĂ©gions du monde de la colonisation grecque. Le point de vue adoptĂ© dans ce livre est dâabord celui de la culture matĂ©rielle ; lâapproche en est essentiellement archĂ©ologique. On se demandera par exemple quels sont les indices archĂ©ologiques qui permettent de dire si un site est habitĂ© par des Grecs, par des indigĂšnes ou par une population âmixteâ, et comment ces indices ont Ă©tĂ© apprĂ©ciĂ©s selon les pĂ©riodes et selon les rĂ©gions. Beaucoup de communications prĂ©sentent des synthĂšses rĂ©gionales ou thĂ©matiques, mais une large place est faite Ă©galement Ă des sites inĂ©dits, pour lesquels on nâa pas hĂ©sitĂ© Ă livrer une abondante documentation (plans, matĂ©riel de fouille). Câest en effet par le renouvellement de la documentation archĂ©ologique que nous pouvons espĂ©rer avancer dans la comprĂ©hension des rapports dâacculturation entre les colons grecs et les populations locales
Analytics of flexible electric consumption. Forecasting the electrical load and the demand response availability
The Demand Response is one of the solutions to the fluctuations of the generation in the power systems. A realtime market combined to automation systems on household has been developed during EcoGrid EU project. This study aims to further develop the Load Forecasting model with statistical learning algorithms based on Support Vector Machine. The extraction of the dependency of the electrical load on temperature and price is proved to be complicated by cross-dependencies and non-linearitie