Search results for "Codes"

AULAS DE ECODISEÑO: ANÁLISIS DE CICLO DE VIDA Y ECODISEÑO EN LA INDUSTRIA

2011

This paper shows the work made by the Ecodesign Learning Centre of Engineering School at the University of the Basque Country and at Mondragon University. Some engineering students have carried out Life Cycle Assessment, Ecodesign and applied research projects in some Basque Companies. One of those projects consisted in a Life cycle assessment of a hydraulic press. The aim of this project was to point out some improvement measures to be used in future designs of machine tools. That kind of products will soon be affected by the Energy using Products Directive. In another project, an environmental product declaration was made for a radio controlled electronic lock. The last project which is p…

Recovery Capabilities of Rateless Codes on Simulated Turbulent Terrestrial Free Space Optics Channel Model

2013

Free Space Optics (FSO) links are affected by several impairments: optical turbulence, scattering, absorption, and pointing. In particular, atmospheric optical turbulence generates optical power fluctuations at the receiver that can degrade communications with fading events, especially in high data rate links. Innovative solutions require an improvement of FSO link performances, together with testing models and appropriate channel codes. In this paper, we describe a high-resolution time-correlated channel model able to predict random temporal fluctuations of optical signal irradiance caused by optical turbulence. Concerning the same channel, we also report simulation results on the error mi…

Packet loss recovery in an indoor Free Space Optics link using rateless codes

2014

Free Space Optics (FSO) systems present some important advantages if compared to Radio Frequency links, but they can be affected by several impairments that degrade the link quality and availability. In particular, due to temporary interruptions of the line-of-sight condition between the transmitter and the receiver, packet loss can occur during data transmission. In this work, we present an indoor Free Space Optics link, in which we have systematically generated interruptions of the beam. We demonstrate how the application of the most recent rateless codes, i.e., RaptorQ codes, can strongly improve the link quality by reducing packet loss. In particular, results show that the Packet Error …

Influence Of Lateral Load Distributions On Pushover Analysis Effectiveness

2008

The effectiveness of two simple load distributions for pushover analysis recently proposed by the authors is investigated through a comparative study, involving static and dynamic analyses of seismic response of eccentrically braced frames. It is shown that in the upper floors only multimodal pushover procedures provide results close to the dynamic profile, while the proposed load patterns are always conservative in the lower floors. They over-estimate the seismic response less than the uniform distribution, representing a reliable alternative to the uniform or more sophisticated adaptive procedures proposed by seismic codes. © 2008 American Institute of Physics.

U.I.R.D.A. – Unbuilt Italian Rationalism Digital Archive

2018

For twenty years, the architecture of Italian rationalism through the digital modelling has been investigated. Very often, the production of a model and the consequent representation of tridimensional views, in many case studies, as outcome of the research on architecture have been considered. Actually, the digital model, intended as a critical tool, has to be conceived as a ‘starting point' for graphic analysis of architecture and not as the outcome. Indeed, it is associated to other graphics, sometimes not ‘deducted' from the model, useful for the understanding/translation of architecture. The construction of the model is not the construction of a simple image, operation, which is often c…

As much English as possible : A study on two secondary school English teachers language use and the motives behind their language choices

2009

 Kommunikatiivisen kompetenssin ja suullisen kielitaidon painoarvo vieraiden kielten oppimisessa ja opettamisessa on kasvanut viime vuosina, mikä on lisännyt huomiota myös opettajien kielenkäyttöön. Tämän proseminaaritutkimuksen tarkoituksena oli selvittää, minkä verran englannin opettajat käyttävät tunneillaan englantia ja suomea ja miten he perustelevat kielivalintojaan. Taustana käytettiin teoreettista keskustelua kohdekielen ja äidinkielen hyödyistä kohdekielen oppimisen kannalta sekä aiempia tutkimustuloksia opettajien kielenkäytöstä. Tutkimuksen aineisto koostui kahdesta videokuvatusta kahdeksannen luokan englannin tunnista ja tunnit pitäneiden opettajien haastatteluista. Toisella ope…

Planning Research Ethics

2015

This chapter will discuss why planning researchers of all kinds – faculty, students, consultants – need to be ethically sensitive. The chapter is written against a background of what has been termed an ‘”ethical” turn’ in many disciplines, and an increasing regulation (and bureaucratisation) of planning (and other) research conducted within universities. Ladd (1980,) argues that there are no ethical principles which are specific to any occupation. In this chapter we argue that the circumstances of planning research, at least, raise distinctive ethical issues . The chapter begins by considering the ethical dimensions of research practice. These will differ according to the way research pract…

Valutazione energetico-ambientale dei prodotti EuP e per la definizione dei criteri minimi di ecodesign

2013

Estimating crop primary productivity with Sentinel-2 and Landsat 8 using machine learning methods trained with radiative transfer simulations

2019

Abstract Satellite remote sensing has been widely used in the last decades for agricultural applications, both for assessing vegetation condition and for subsequent yield prediction. Existing remote sensing-based methods to estimate gross primary productivity (GPP), which is an important variable to indicate crop photosynthetic function and stress, typically rely on empirical or semi-empirical approaches, which tend to over-simplify photosynthetic mechanisms. In this work, we take advantage of all parallel developments in mechanistic photosynthesis modeling and satellite data availability for an advanced monitoring of crop productivity. In particular, we combine process-based modeling with …

The DMT of Real and Quaternionic Lattice Codes and DMT Classification of Division Algebra Codes

2021

In this paper we consider the diversity-multiplexing gain tradeoff (DMT) of so-called minimum delay asymmetric space-time codes. Such codes are less than full dimensional lattices in their natural ambient space. Apart from the multiple input single output (MISO) channel there exist very few methods to analyze the DMT of such codes. Further, apart from the MISO case, no DMT optimal asymmetric codes are known. We first discuss previous criteria used to analyze the DMT of space-time codes and comment on why these methods fail when applied to asymmetric codes. We then consider two special classes of asymmetric codes where the code-words are restricted to either real or quaternion matrices. We p…