Search results for "Photograph"

Ievads ķīmijā, optikā un sensitometrijā: fotografa amata kursā (pēc Latvijas amatniecības kameras meistaru pārbaudes programas) lasīto lekciju konspe…

1939

The Impact of Driving Forces and Protection Policies on Future Coastal Landscapes: A Case Study of Latvia

2011

Landscapes and related land cover changes are essential elements of sustainable coastal zone management in Europe and in Latvia. The issue of landscape protection, management and planning was promoted as a result of the adoption of the European Landscape Convention (2000), while the Recommendations concerning the Implementation of Integrated Coastal Zone Management were adopted by the European Community (2002) to address land use issues. The Recommendations also emphasise the need to recognise the threat to coastal zones posed by Climate Change. This paper aims to contribute to the enhancement of landscape and coastal zone management policies by addressing the changes in coastal landscapes.…

Combining long-term land cover time series and field observations for spatially explicit predictions on changes in tropical forest biodiversity

2011

Combining spatially explicit land cover data from remote-sensing and faunal data from field observations is increasingly applied for landscape-scale habitat and biodiversity assessments, but without modelling changes quantitatively over time. In a novel approach, we used a long-term time series including historical map data to predict the influence of one century of tropical forest change on keystone species or indicator groups in the Kakamega–Nandi forests, western Kenya. Four time steps of land cover data between 1912/13 and 2003, derived from Landsat satellite imagery, aerial photography and old topographic maps, formed the basis for extrapolating species abundance data on the army ant D…

The utilization of landscape pictures extracted from open picture collections for the determination of interest in spatial features

2018

This paper describes a method that uses georeferenced landscape pictures extracted from open picture collections for the determination of the population's interest in spatial features. The automated method takes into account the coordinates of the camera position as well as the azimuth angle, the focal length and the crop factor in order to calculate a field of view using a digital terrain model (DTM). This field of view can thereafter be used for the determination of interest in spatial features. In a case study involving more than 3'000 georeferenced pictures we investigate the potential of the method.

Visioni da Oscar. Giuseppe La Spada

2010

Giuseppe La Spada, giovane pluripremiato designer di origini siciliane, ma ormai divenuto viaggiatore e cittadino del mondo, con il suo lavoro dimostra quanto sia difficile oggi parlare di aree disciplinari nel campo del design, intese come compartimenti stagni, così come eravamo abituati a fare non più di qualche decennio addietro, quando strutturare una mappa del design consentiva di organizzare un quadro sinottico, chiaro e discretizzato, in cui trovavano posto tra gli altri aree, nomi, progetti, correnti, periodi storici. Giuseppe La Spada, the young, multi-prize winning designer of Sicilian origin, is now a traveller and citizen of the world. His work shows just how difficult it is tod…

Rwanda, 1994-2014. Histoire, mémoires et récits

2017

International audience; Un ouvrage choral et transdisciplinaire pour mieux repenser le génocide des Tutsi, au Rwanda comme en France : chercheurs, artistes et témoins présentent un état des savoirs et des réflexions sur le sujet, à travers un ensemble de contributions abordant les problématiques de l'écriture et de la transmission de l'histoire du génocide, de ses dimensions politiques et judiciaires et de ses représentations médiatiques et artistiques.Tandis que les productions artistiques, littéraires et visuelles – cinéma, théâtre, photographie – sur le génocide des Tutsi au Rwanda en 1994 se sont très vite multipliées, l'écriture de l'histoire a dû se frayer un chemin entre les exigence…

An Analysis of Flash Page Reuse With WOM Codes

2018

Flash memory is prevalent in modern servers and devices. Coupled with the scaling down of flash technology, the popularity of flash memory motivates the search for methods to increase flash reliability and lifetime. Erasures are the dominant cause of flash cell wear, but reducing them is challenging because flash is a write-once medium— memory cells must be erased prior to writing. An approach that has recently received considerable attention relies on write-once memory (WOM) codes, designed to accommodate additional writes on write-once media. However, the techniques proposed for reusing flash pages with WOM codes are limited in their scope. Many focus on the coding theory alone, whereas o…

Comparison of TID response and SEE characterization of single- and multi-level high density NAND flash memories

2009

Heavy ion single-event measurements and total ionizing dose (TID) response for 8Gb commercial NAND flash memories are reported. Radiation results of multilevel flash technology are compared with results from single-level flash technology. The single-level devices are less sensitive to single event upsets (SEUs) than multi-level devices. In general, these commercial high density memories exhibit less TID degradation compared to older generations of flash memories. The charge pump in this study survived up to 600 krads.

Extending SSD lifetime in database applications with page overwrites

2013

Flash-based Solid State Disks (SSDs) have been a great success story over the last years and are widely used in embedded systems, servers, and laptops.One often overlooked ability of NAND flash is that flash pages can be overwritten in certain circumstances. This can be used to decrease wear out and increase performance.In this paper, we analyze the potential of overwrites for the most used data structure in database applications: the B-Tree. We show that with overwrites it is possible to significantly reduce flash wear out and increase overall performance.

A next generation Ultra-Fast Flash Observatory (UFFO-100) for IR/optical observations of the rise phase of gamma-ray bursts

2012

The Swift Gamma-ray Burst (GRB) observatory responds to GRB triggers with optical observations in ~ 100 s, but cannot respond faster than ~ 60 s. While some ground-based telescopes respond quickly, the number of sub-60 s detections remains small. In mid- to late-2013, the Ultra-Fast Flash Observatory-Pathfinder is to be launched on the Lomonosov spacecraft to investigate early optical GRB emission. This pathfinder mission is necessarily limited in sensitivity and event rate; here we discuss a next generation rapid-response space observatory. We list science topics motivating our instruments, those that require rapid optical-IR GRB response, including: A survey of GRB rise shapes/times, meas…