نتایج جستجو برای: restore streams

تعداد نتایج: 59873  

2012
Derek B. Booth David R. Montgomery John Bethel

Large woody debris (LWD) performs key functions in undisturbed streams that drain lowland forested watersheds, including dissipation of flow energy, stabilization of bedforms and channel banks, entrapment of sediment, and formation of pools. These functions vary between individual channels, however, depending on the size and morphology of the stream, which in turn depend on climate, watershed s...

2015
Pablo Rodríguez-Lozano Iraima Verkaik Maria Rieradevall Narcís Prat

Top predator loss is a major global problem, with a current trend in biodiversity loss towards high trophic levels that modifies most ecosystems worldwide. Most research in this area is focused on large-bodied predators, despite the high extinction risk of small-bodied freshwater fish that often act as apex consumers. Consequently, it remains unknown if intermittent streams are affected by the ...

2016
Nicholas S. Johnson Scott Miehls Lisa M. O’Connor Gale Bravener Jessica Barber Henry Thompson John A. Tix Tyler Bruning

A novel system combining a trap and pulsed direct current electricity was able to catch up to 75% of tagged invasive sea lamprey Petromyzon marinus in free-flowing streams. Non-target mortality was rare and impacts to non-target migration were minimal; likely because pulsed direct current only needed to be activated at night (7 hours of each day). The system was completely portable and the annu...

Journal: :CoRR 2017
Byeongyong Ahn Nam Ik Cho

There are two main streams in up-to-date image denoising algorithms: non-local self similarity (NSS) prior based methods and convolutional neural network (CNN) based methods. The NSS based methods are favorable on images with regular and repetitive patterns while the CNN based methods perform better on irregular structures. In this paper, we propose a blockmatching convolutional neural network ...

Journal: :CoRR 2012
Vania V. Estrela Alessandra Martins Coelho

Progress in image sensors and computation power has fueled studies to improve acquisition, processing, and analysis of 3D streams along with 3D scenes/objects reconstruction. The role of motion compensation/motion estimation (MCME) in 3D TV from end-to-end user is investigated in this chapter. Motion vectors (MVs) are closely related to the concept of disparities and they can help improving dyn...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2011
Ng Machado Em Venticinque J Penha

Over the last 30 years, the Cerrado has been experiencing various antropic impacts that have brought about alterations to species composition, structure and functioning of aquatic habitats. Therefore, studies on negative impacts are useful to prevent future damage and restore environmental quality. The objectives of our study were: i) to adapt an index of biotic integrity of streams in the Rio ...

Journal: :CoRR 2007
Maurice H. T. Ling

This paper presents a simple data dump and load utility for Firebird databases which mimics mysqldump in MySQL. This utility, fb_dump and fb_load, for dumping and loading respectively, retrieves each database table using kinterbasdb and serializes the data using marshal module. This utility has two advantages over the standard Firebird database backup utility, gbak. Firstly, it is able to backu...

2016
Matthias Goeken Stefanie Looso

Zwar liegen mit Referenzmodellen und Standards Hilfestellungen für die Umsetzung einer IT-Governance in Unternehmen vor. Allerdings bleibt vielfach unklar, wie diese herangezogen werden und als Vorlage dienen können, um bspw. ein unternehmensspezifisches ITGovernancemodell zu entwickeln. In zwei Forschungsprojekten wurde untersucht, wie die Anwendung von Referenzmodellen der IT-Governance mitte...

2015
Min Fu Dan Feng Yu Hua Xubin He Zuoning Chen Wen Xia Yucheng Zhang Yujuan Tan

Data deduplication has become a standard component in modern backup systems. In order to understand the fundamental tradeoffs in each of its design choices (such as prefetching and sampling), we disassemble data deduplication into a large N-dimensional parameter space. Each point in the space is of various parameter settings, and performs a tradeoff among backup and restore performance, memory ...

Journal: :Water 2021

Globally, croplands and rangelands are major land uses they have altered lands waters for millennia. This continues to be the case throughout USA, despite substantial improvements in treating wastewaters from point sources—versus non-point (diffuse) sources. Poor macroinvertebrate assemblage condition occurs 30% of conterminous USA streams rivers; poor fish 26%. The risk was most strongly assoc...

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