Search results for "shifting"

Economic feasibility of a customer-side energy storage in the Italian electricity market

2015

Electricity prices show significant short-term variations during the day due to the need of balancing supply and demand in real time. Normally, customers are not exposed to these variations but pay a constant electricity price. In an attempt to reduce the volatility of the wholesale prices, several utilities are moving from conventional fixed-rate pricing schemes to new market-based models, where the electricity price can fluctuate during the day depending on the market conditions. Examples of time-dependent pricing schemes are Time-Of-Use (TOU) tariffs, where the electricity price can take two or three price levels during the day, or Real-Time Pricing (RTP) tariffs, where the energy price …

Analysis of Electrical Loads and Strategies for Increasing Self-Consumption with BIPV Case study : Skarpnes Zero-Energy House

2017

Master's thesis Renewable Energy ENE500 - University of Agder 2017 At Skarpnes village (Southern Norway), the houses as zero energy buildings (ZEB) are installed with Building Integrated Photovoltaic (BIPV) systems, and these houses are not containing smart control of equipments. The aim of such buildings is that the amount of electrical energy produced is the same as that consumed in the buildings on an annual basis. In this thesis, the main objective is to analyse the methods for increasing self -consumption in BIPV, by minimizing the cost of purchasing electricity from the grid at time with no PV production, and maximizing the utilization of solar PV generated power, which reduces the po…

La resemantització com a recurs creatiu: la neologia cromàtica

2015

El valor simbòlic que han adquirit els termes dels colors en les diferents cultures al llarg de la història explica que siguin un element recurrentment utilitzat per a la creativitat lèxica. En aquest treball abordem, des d’una perspectiva lingüística, un aspecte de l’estudi dels termes dels colors que ha estat poc tractat fins ara: el paper que juguen en la resemantització de les unitats lèxiques d’una llengua. Per fer-ho, partim, d’una banda, d’alguns dels conceptes fonamentals establerts des de l’antropologia lingüística, i de l’altra, dels supòsits teòrics de la semàntica cognitiva. Després de donar compte, en els primers apartats, dels conceptes teòrics fonamentals en què ens basem, an…

Suppression of phase ambiguity in digital holography by using partial coherence or specimen rotation

2008

In this paper we present two approaches for extracting the surface profile as well as obtaining 3D imaging of near field objects by usage of partial coherence and digital holography. In the first approach a light source with given temporal partial coherence is used to illuminate a near field object. The reflected light is interfered with the reference source. By computing the local contrast of the generated fringes one may estimate the 3D topography and the profile of the object. This approach extracts the 3D information from a single image, and its accuracy does not depend on triangulation angle like in fringe projection methods. The second approach is tomography based. There we illuminate…

The use of different style variants and style shifting and their functions in the speech of an EFL teacher

2008

Optimization of BESS Capacity Under a Peak Load Shaving Strategy

2018

Battery energy storage systems (BESSs) are becoming increasingly competitive in the global energy landscape, thanks to the strong cost reduction that has taken place in recent years and it is expected to continue in the next future. Among the many benefits BESSs can provide, time shifting can be exploited by electricity consumers to save on the electricity bill, charging the storage during the off-peak hours and discharging when the cost of electricity is high. This paper describes a simple procedure to optimize the BESS capacity under a peak load shaving strategy, in presence of a time-of-use (TOU) electricity rate, able to guarantee, at the same time, the flattest daily power diagram and …

An Integrated Theory for the Accumulation of Mentally Ill Offenders and the Effect of Realignment in California

2018

High mental illness prevalence in California state prisons has drawn much attention of scholars and policymakers in the past three decades. Various studies suggest that the mental illness prevalence in prison has increased from 0.14 to 0.3 from 1987 to 2014. The problem with a high concentration of mentally ill prisoners culminated when the California Department of Corrections and Rehabilitation (CDCR) was sued for the violation of inmates’ rights under the Eighth Amendment in the early 1990s. Consequently, CDCR’s health care was placed under Federal receivership to reform prison health care. Receivership is an uncommon remedy adopts by a federal court when other court orders have failed to…

The impact of life stage and pigment source on the evolution of novel warning signal traits

2021

Our understanding of how novel warning color traits evolve in natural populations is largely based on studies of reproductive stages and organisms with endogenously produced pigmentation. In these systems, genetic drift is often required for novel alleles to overcome strong purifying selection stemming from frequency-dependent predation and positive assortative mating. Here, we integrate data from field surveys, predation experiments, population genomics, and phenotypic correlations to explain the origin and maintenance of geographic variation in a diet-based larval pigmentation trait in the redheaded pine sawfly (Neodiprion lecontei), a pine-feeding hymenopteran. Although our experiments c…