scholarly journals A new approach for coupling the short- and long-term planning models to design a pathway to carbon neutrality in a coal-based power system

Energy ◽  
2021 ◽  
pp. 122438
Author(s):  
Artur Wyrwa ◽  
Wojciech Suwała ◽  
Marcin Pluta ◽  
Maciej Raczyński ◽  
Janusz Zyśk ◽  
...  
2021 ◽  
pp. 107385842199668
Author(s):  
Simone G. Shamay-Tsoory

Social interactions are powerful determinants of learning. Yet the field of neuroplasticity is deeply rooted in probing changes occurring in synapses, brain structures, and networks within an individual brain. Here I synthesize disparate findings on network neuroplasticity and mechanisms of social interactions to propose a new approach for understanding interaction-based learning that focuses on the dynamics of interbrain coupling. I argue that the facilitation effect of social interactions on learning may be explained by interbrain plasticity, defined here as the short- and long-term experience-dependent changes in interbrain coupling. The interbrain plasticity approach may radically change our understanding of how we learn in social interactions.


1974 ◽  
Vol 11 (1) ◽  
pp. 142-164 ◽  
Author(s):  
P. La Rochelle ◽  
B. Trak ◽  
F. Tavenas ◽  
M. Roy

The present paper reports on the failure of a test embankment built on a soft, sensitive, and cemented clay in Saint-Alban, Quebec. The embankment was built as a first stage of a research program aimed at studying the short and long term behavior of embankments on soft clay foundations.A complete description of the embankment, of the instrumentation, and of the failure is given, followed by the analysis of the failure performed on the basis of different assumptions of fill behavior and of vane strength values mobilized in the clay crust. The analyses show that the assumptions of full mobilization of friction in the fill seems to be the most representative of the fill behavior in the present case and that a suitable factor of safety is obtained only when a reduction of vane strength is assumed to act in the crust.A new approach based on the residual undrained strength is suggested and seems to offer some potential as a valuable means of analyzing the stability of embankments on clay foundations.


Author(s):  
Yannick Baidai ◽  
Laurent Dagorn ◽  
Monin J Amandè ◽  
Daniel Gaertner ◽  
Manuela Capello

Abstract This study addresses novel questions on the dynamics of tuna aggregations around floating objects, using echosounder buoys data collected throughout the drifts of newly deployed Drifting Fish Aggregating Devices (DFADs) in the Atlantic Ocean (AO) and Indian Ocean (IO). Time series of presence/absence of tunas were obtained by supervised classification of acoustic data. To avoid biases related to the variability in individual DFAD soak times, a new approach was developed to estimate the average colonization time of new DFADs by tuna aggregations. We showed that tunas colonize DFADs after an average of 16 days in the AO, and 40 days in the IO. Moreover, the analysis indicated that the time span during which tuna aggregations occupy DFADs is driven by a time-independent process with short- and long-term residence modes. On average, DFADs were continuously occupied by tuna aggregations for 6 and 9 days in the IO and AO, respectively. The time between two consecutive aggregations at the same DFAD averaged 9 days in the IO and 5 days in the AO. Throughout their soak time after being colonized, DFADs remained occupied for a larger proportion of time in the AO (63%) than in the IO (45%).


2011 ◽  
Vol 11 (3) ◽  
pp. 235-250 ◽  
Author(s):  
Christien Enzing ◽  
Stefano Pascucci ◽  
Felix Janszen ◽  
Onno Omta

Innovative companies increasingly use resources from outside the company in order to speed up the innovation process. Building and maintaining an external network has become vital to an innovative company's strategy for survival and growth. The study takes a new approach by not only investigating the role of the innovation network on the product's performance soon after market launch, but also after seven years. We focus on the external network involved in the innovation process of a product, and not of the company as a whole. We analysed the role of technology-related and market-related actors in the networks for new and improved products separately as we expected significant differences between the two product groups. Based on an analysis of data on 129 products in the Dutch food and beverages industry we found that the involvement of specific technology-related actors (research institutes, companies providing training, companies supplying machinery and equipment) and market-related actors (customers, competitors, marketing companies) related significantly positively to both short- and long-term market performance of new products, but not of improved products.


Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5151
Author(s):  
Aleksandra Komorowska

In recent years, numerous countries have introduced or considered capacity markets as remuneration mechanisms for long-term capacity adequacy. Since adequacy is frequently linked with thermal power generation, there is an ongoing debate as to whether this instrument could impact decarbonisation. In this context, the paper presents a quantitative assessment of the consequences of introducing a capacity market on decarbonisation pathways. The Polish power system is taken as an example due to its heavy dependence on fossil fuels. To this end, a computable model of the Polish power system is developed and applied to the study of two research scenarios. The first scenario presents the power system without introducing a capacity market, while the latter considers the system with a capacity market in place. The analysis shows that the introduction of a capacity market delays the decarbonisation of the power system and has a negative impact on carbon neutrality. Even though coal-fired units are phased out, they are mainly replaced by natural gas. The method and model developed within this study can be applied to countries where a capacity market is being discussed, and fossil fuels continue to play a dominant role.


1989 ◽  
Vol 22 (9) ◽  
pp. 165-170
Author(s):  
J.C. Kim ◽  
Y.M. Park ◽  
B.H. Kim

VASA ◽  
2001 ◽  
Vol 30 (Supplement 58) ◽  
pp. 6-14 ◽  
Author(s):  
Edmonds ◽  
Foster

The diabetic ischaemic foot has become an increasingly frequent problem over the last decade. However, we report a new approach consisting of a basic classification, a simple staging system of the natural history and a treatment plan for each stage, within a multi-disciplinary framework. This approach of "taking control" consists of two parts: 1. long-term conservative care including debridement of ulcers (to obtain wound control), eradication of sepsis (micribiological control), and provision of therapeutic footwear (mechanical control), and 2. revascularisation by angioplasty and arterial bypass (vascular control). This approach has led to a 50% reduction in the rate of major amputations in patients attending with ischaemic ulceration and absent foot pulses from 1989 to 1999 (from 4.6% to 2.3% per year). Patients who underwent angioplasty increased from 6% to 13%. Arterial bypass similarly increased from 3% to 7% of cases. However, even with an increased rate of revascularisation, 80% of patients responded to conservative care alone. This,we conclude, is an essential part of the management of all patients with ischaemic feet.


Sign in / Sign up

Export Citation Format

Share Document