Results 101 to 110 of about 2,461 (211)

A Survey of Methods for Constructing 3D Urban Models From Point Clouds

Computer Graphics Forum, EarlyView.
The survey outlines a general process for constructing 3D models from point clouds and categorizes the methods based on their use of templates, basic surface primitives, hybrid approaches, or linear primitives. Additionally, the survey reviews the datasets and benchmarks that are essential for testing and training the developed methods.
Chiara Romanengo, Silvia Biasotti, Bianca Falcidieno, Daniela Cabiddu, Elia Moscoso Thompson, Michela Spagnuolo   +5 more
wiley   +1 more source

TLS(Total　Least　Squares)法を用いた航空機の空力微係数の推定

TLS(Total　Least　Squares)法を用いた航空機の空力微係数の推定
目的変数が説明変数と未知係数の積で表される線形モデル方程式を考える。最小2乗法は目的変数のみに計測誤差が含まれると仮定して未知係数を推定する手法であるが、説明変数に計測誤差が含まれる場合、最小2乗法で求めた係数はバイアス誤差を含み、係数の標準偏差は実際より小さく推定される。TLS(全体最小2乗)法は、説明変数および目的変数の双方に計測誤差が含まれると仮定して、未知係数を求める手法である。TLS法は最小2乗法を一般化したものといえる。TLS法によって推定された係数はバイアス誤差を含まず、係数の標準偏差も正しく推定される。本報告書では、まず、TLS法の概念、計算アルゴリズムおよび特性を示し、最小2乗法と比較する。次に、飛行試験データからのTLS法による空力微係数の推定例を示す。 This report ...
openaire  

Hierarchical Optimization of the As‐Rigid‐As‐Possible Energy

Computer Graphics Forum, EarlyView.
Abstract The As‐Rigid‐As‐Possible (ARAP) energy [SA07] has become a versatile ingredient in various geometry processing and machine learning methods. The classic method for its minimization is a block coordinate descent, alternating between local rotation estimation and a global linear solve, which converges slowly for large problem instances.
Hendrik Meyer, Bernd Bickel, Marc Alexa
wiley   +1 more source

Investigating transthyretin variants H88R and I107V in amyloid priming: From destabilization to complete dissociation

The FEBS Journal, EarlyView.
Investigated mutations in transthyretin (TTR) disrupt the F87‐centered hydrophobic core that stabilizes its tetrameric structure. The mild I107V mutation weakens inter‐chain packing, while H88R fully abolishes tetramer formation, yielding a monomeric, aggregation‐prone form. Structural, biophysical, and computational analyses reveal that both mutations
István L. Bódy, Zsolt Fazekas, Nóra Wágner, Anna J. Kiss‐Szemán, Veronika Harmat, Zoltán Pozsonyi, Dóra K. Menyhárd, András Perczel   +7 more
wiley   +1 more source

Brand Equity and Debt Diversification

Financial Management, EarlyView.
ABSTRACT This study examines how brand equity influences the diversity of firms’ debt structures. We propose that brand equity, by signaling larger and more stable future cash flows and greater product market awareness, alters the fundamental trade‐offs that drive optimal debt type diversity.
David C. Mauer, Miaomiao Yu, Aihuan Zhang   +2 more
wiley   +1 more source

Impact of Environmental Conditions on the Spawning Migration of Sea Trout (Salmo trutta L.) in Two Large, Sub‐Arctic River Systems

Fisheries Management and Ecology, EarlyView.
ABSTRACT The global decline in salmonid stocks has increased the need for knowledge of local adaptations and life history strategies of salmonids. In this study, we used radio‐telemetry tracking data from sea trout populations in two large high‐latitude rivers to model upstream spawning migration speed of trout in response to prevailing environmental ...
L. Lähteenmäki, A. Romakkaniemi, R. Huusko, G. Hellström, P. Orell, J. Erkinaro, A. H. Rikardsen, J. Jensen, M. Snickars   +8 more
wiley   +1 more source

Reproductive plasticity and environmental tolerance of invasive African catfish (Clarias gariepinus) in a tropical Brazilian river

Journal of Fish Biology, EarlyView.
Abstract Invasive alien species (IAS) pose a significant threat to biodiversity, particularly when endowed with high ecological and reproductive plasticity. The African catfish, Clarias gariepinus, is one such species, widely recognized for its ability to colonize and establish in diverse tropical ecosystems.
Michelle Torres Dumith, Alejandra Filippo Gonzalez Neves dos Santos   +1 more
wiley   +1 more source

The state of knowledge on four families of Syngnathoidei fishes (Teleostei: Syngnathiformes): Aulostomidae, Centriscidae, Fistulariidae and Solenostomidae

Journal of Fish Biology, EarlyView.
Abstract Knowledge on the ecology and life‐history traits of coastal marine species is vital to inform their conservation and management, especially as their coastal habitats come under increasing threats. However, such data have never been collated for four of the five families in the suborder Syngnathoidei—the close relatives of the better‐studied ...
Syd J. Ascione, Elsa Camins, Miguel Correia, Amanda C. J. Vincent   +3 more
wiley   +1 more source

Experimental and analytical geodetic accuracy assessment of terrestrial laser scanning for deformation monitoring under static and dynamic conditions. [PDF]

Sci Rep
Beshr AAA, Alshammari TO, Zaher I, Shehata AG.   +3 more
europepmc   +1 more source

Lake sturgeon (Acipenser fulvescens) growth and longevity estimated from adult capture–mark–recapture data

Journal of Fish Biology, EarlyView.
Abstract Effective fishery management policy depends on accurate life‐history data, particularly for harvested species. Longevity is a core life‐history trait that is directly related to annual survival and lifetime reproductive potential, but fish longevity is generally not well documented, particularly for long‐lived species.
Edward A. Baker, Scott F. Colborne, Nancy A. Auer, Kim T. Scribner, Douglas L. Larson, Andrew S. Briggs, Ronald M. Bruch, Margaret H. Stadig, Michael C. Donofrio   +8 more
wiley   +1 more source