scholarly journals Prospects for the creation of an optical-mechanical unit for a high-resolution nanolithograph

2019 ◽  
Vol 1333 ◽  
pp. 022007
Author(s):  
A V Kiryanov ◽  
V P Kiryanov ◽  
V N Homutov ◽  
R V Shimanskii
Keyword(s):  
High Resolution ◽  
Mechanical Unit ◽  
The Creation

Direct imaging of direction-controlled molecular rotational wave packets created by a polarization-skewed double-pulse

2020 ◽  
Vol 22 (19) ◽  
pp. 10853-10862
Author(s):  
Kenta Mizuse ◽  
Naoya Sakamoto ◽  
Romu Fujimoto ◽  
Yasuhiro Ohshima
Keyword(s):  
High Resolution ◽  
Wave Packets ◽  
Double Pulse ◽  
Direct Imaging ◽  
Creation Process ◽  
Rotational Wave ◽  
The Creation

High-resolution molecular movies of direction-controlled rotational wave packets are reported, providing insights into the creation process and detailed dynamics of wave packets.

scholarly journals A Change-Driven Image Foveation Approach for Tracking Plant Phenology

2020 ◽  
Vol 12 (9) ◽  
pp. 1409
Author(s):  
Ewerton Silva ◽  
Ricardo da S. Torres ◽  
Bruna Alberton ◽  
Leonor Patricia C. Morellato ◽  
Thiago S. F. Silva
Keyword(s):  
Time Series ◽  
High Resolution ◽  
Image Sequences ◽  
Plant Phenology ◽  
Memory Storage ◽  
High Resolution Images ◽  
The Creation ◽  
Computational Resources ◽  
Space Variant

One of the challenges in remote phenology studies lies in how to efficiently manage large volumes of data obtained as long-term sequences of high-resolution images. A promising approach is known as image foveation, which is able to reduce the computational resources used (i.e., memory storage) in several applications. In this paper, we propose an image foveation approach towards plant phenology tracking where relevant changes within an image time series guide the creation of foveal models used to resample unseen images. By doing so, images are taken to a space-variant domain where regions vary in resolution according to their contextual relevance for the application. We performed our validation on a dataset of vegetation image sequences previously used in plant phenology studies.

Using High-Resolution Digital Scans in Multimedia Cartographic Applications

1994 ◽  
pp. 26-30
Author(s):  
David W. Tilton
Keyword(s):  
Native American ◽  
High Resolution ◽  
Research Project ◽  
Cd Rom ◽  
University Of Wisconsin ◽  
The Creation ◽  
Scanned Images ◽  
The University

Since June of 1993, the Geography Department at the University of Wisconsin-Milwaukee has been engaged in a research project to develop the Archive of Native American Maps on CD-ROM. A major component of this project involves the creation of high-resolution scans of the maps in the archive. This paper discusses several issues encountered in the acquisition, manipulation and display of these scanned images. The issues include scanning resolution, file compression, palette shifts, and image tiling.

scholarly journals Simulation of Images and Digital Terrain Models for the Mission BepiColombo

2021 ◽  
Author(s):  
Nicolò Borin ◽  
Cristina Re ◽  
Emanuele Simioni ◽  
Stefano Debei ◽  
Gabriele Cremonese
Keyword(s):  
High Resolution ◽  
Input Data ◽  
Image Simulation ◽  
Digital Terrain Models ◽  
Digital Terrain ◽  
Terrain Models ◽  
Novel Approach ◽  
Stereo Reconstruction ◽  
Acquisition Strategy ◽  
The Creation

AbstractBepiColombo mission will provide Digital Terrain Models of the surface of Mercury by means of the stereo channel of the SIMBIO-SYS (Spectrometer and Imaging for MPO BepiColombo Integrated Observatory SYStem) imaging package onboard. The work here described presents a novel approach for the creation of higher resolution stereo products using the high-resolution channel of SIMBIO-SYS. Being the camera rigidly integrated with the spacecraft, this latter must be tilted to acquire stereo pairs necessary for the 3D reconstruction. A new method for image simulation and stereo reconstruction is presented in this work, where the input data are chosen as closely as possible to the real mission parameters. Different simulations are executed changing the illumination conditions and the stereo angles. The Digital Terrain Models obtained are evaluated and an analysis of the best acquisition conditions is performed, helping to improve the image acquisition strategy of BepiColombo mission. In addition, a strategy for the creation of a mosaic from different images acquired with the high-resolution channel of SIMBIO-SYS is explained, giving the possibility to obtain tridimensional products of extended targets.

scholarly journals Using structurally fungible biosensors to evolve improved alkaloid biosyntheses

2021 ◽  
Author(s):  
Simon d'Oelsnitz ◽  
Wantae Kim ◽  
Nathaniel T Burkholder ◽  
Kamyab javanmardi ◽  
Ross Thyer ◽  
...  
Keyword(s):  
Transcription Factors ◽  
High Resolution ◽  
Binding Site ◽  
Microbial Production ◽  
Plant Metabolites ◽  
Starting Point ◽  
Selection Approach ◽  
The Creation ◽  
Effector Binding ◽  
General Method

A key bottleneck in the microbial production of therapeutic plant metabolites is identifying enzymes that can greatly improve yield. The facile identification of genetically encoded biosensors can overcome this limitation and become part of a general method for engineering scaled production. We have developed a unique combined screening and selection approach that quickly refines the affinities and specificities of generalist transcription factors, and using RamR as a starting point we evolve highly specific (>100-fold preference) and sensitive (EC50 <30 μM) biosensors for the alkaloids tetrahydropapaverine, papaverine, glaucine, rotundine, and noscapine. High resolution structures reveal multiple evolutionary avenues for the fungible effector binding site, and the creation of new pockets for different chemical moieties. These sensors further enabled the evolution of a streamlined pathway for tetrahydropapaverine, an immediate precursor to four modern pharmaceuticals, collapsing multiple methylation steps into a single evolved enzyme. Our methods for evolving biosensors now enable the rapid engineering of pathways for therapeutic alkaloids.

scholarly journals Imaging Performance of Quantitative Transmission Ultrasound

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Mark W. Lenox ◽  
James Wiskin ◽  
Matthew A. Lewis ◽  
Stephen Darrouzet ◽  
David Borup ◽  
...  
Keyword(s):  
High Resolution ◽  
Plane Wave ◽  
Inverse Scattering ◽  
Speed Of Sound ◽  
Field Of View ◽  
Water Tank ◽  
Geometric Accuracy ◽  
The Creation ◽  
Imaging Performance ◽  
Sound Maps

Quantitative Transmission Ultrasound (QTUS) is a tomographic transmission ultrasound modality that is capable of generating 3D speed-of-sound maps of objects in the field of view. It performs this measurement by propagating a plane wave through the medium from a transmitter on one side of a water tank to a high resolution receiver on the opposite side. This information is then used via inverse scattering to compute a speed map. In addition, the presence of reflection transducers allows the creation of a high resolution, spatially compounded reflection map that is natively coregistered to the speed map. A prototype QTUS system was evaluated for measurement and geometric accuracy as well as for the ability to correctly determine speed of sound.

SMA and SME in Cu-Zn-Al Alloys: Local Studies in α, ε, T Space

1991 ◽  
Vol 246 ◽  
Author(s):  
A. Amengual ◽  
A. Isalgué ◽  
F.C. Lovey ◽  
F. Marco ◽  
V. Torra
Keyword(s):  
High Resolution ◽  
Mechanical Stress ◽  
Single Crystals ◽  
Experimental Observation ◽  
Hysteresis Loops ◽  
Al Alloys ◽  
Material Behaviour ◽  
Electronic Concentration ◽  
The Creation

AbstractThe use of Cu-Zn-Al single crystals (electronic concentration e/a= 1.48) and of a high resolution equipment allows to study the evolution of one or few martensite domains. This kind of study proves the existence of intrinsic thermoelasticity, the differences between different friction processes (interface movements and nucleation) and also the coherence of the hysteresis loops obtained through mechanical stress or temperature. The different evolutions linked to the creation of dislocations or to the change of é precipitates can clearly be seen during the cycling. The observations allow to establish a model of the material behaviour consistent with experimental observation.

scholarly journals Integrated Laser Scanner Techniques to Produce High-Resolution DTM of Vegetated Territory

2021 ◽  
Vol 13 (13) ◽  
pp. 2504
Author(s):  
Federica Marotta ◽  
Simone Teruggi ◽  
Cristiana Achille ◽  
Giorgio Paolo Maria Vassena ◽  
Francesco Fassi
Keyword(s):  
High Resolution ◽  
Laser Scanner ◽  
Digital Terrain Model ◽  
Point Clouds ◽  
Terrain Model ◽  
Digital Terrain ◽  
3D Data ◽  
Detection And Identification ◽  
Geological Features ◽  
The Creation

The paper presents the first part of a research project concerning the creation of 3D terrain models useful to understand landslide movements. Thus, it illustrates the creation process of a multi-source high-resolution Digital Terrain Model (DTM) in very dense vegetated areas obtained by integrating 3D data coming from three sources, starting from long and medium-range Terrestrial Laser Scanner up to a Backpack Indoor Mobile Mapping System. The point clouds are georeferenced by means of RKT GNSS points and automatically filtered using a Cloth Simulation Filter algorithm to separate points belonging to the ground. Those points are interpolated to produce the DTMs which are then mosaicked to obtain a unique multi-resolution DTM that plays a crucial role in the detection and identification of specific geological features otherwise visible. Standard deviation of residuals of the DTM varies from 0.105 m to 0.176 m for Z coordinate, from 0.065 m to 0.300 m for X and from 0.034 m to 0.175 m for Y. The area under investigation belongs to the Municipality of Piuro (SO) and includes both the town and surrounding valley. It was affected by a dramatic landslide in 1618 that destroyed the entire village. Numerous challenges have been faced, caused both by the characteristics of the area and the processed data. The complexity of the case study turns out to be an excellent test bench for the employed technologies, providing the opportunity to precisely identify the needed direction to obtain future promising results.

scholarly journals Creating HiRISE digital elevation models for Mars using the open-source Ames Stereo Pipeline

2019 ◽  
Author(s):  
Adam J. Hepburn ◽  
Tom Holt ◽  
Bryn Hubbard ◽  
Felix Ng
Keyword(s):  
High Resolution ◽  
Open Source ◽  
Digital Elevation Models ◽  
Surface Processes ◽  
Low Resolution ◽  
Commercial Software ◽  
Pixel Resolution ◽  
Intermediate Data ◽  
Digital Elevation ◽  
The Creation

Abstract. The present availability of sub-decametre digital elevation models on Mars – crucial for the study of surface processes – is scarce. In contrast to the globally-available but low-resolution datasets, such models enable the study of landforms  3000 stereo pairs at 25 cm/pixel resolution, enabling the creation of high-resolution digital elevation models (1–2 m/pixel). However, only ~ 500 of these pairs have been processed and made publicly available to date. Existing pipelines for the production of digital elevation models from stereo-pairs, however, are built upon commercial software, rely upon sparsely-available intermediate data, or are reliant on proprietary algorithms. Here, we present and test the output of a new pipeline for producing digital elevation models from HiRISE stereo pairs that is built entirely upon the open source NASA Ames Stereo Pipeline photogrammetric software, making use of freely available data for cartographic rectification. This pipeline is implemented here on a research computing cluster, but can also be used on consumer-grade UNIX computers. The four output digital elevation models produced using the pipeline presented here are globally well-registered, with accuracy similar to those of multiple digital elevation models produced elsewhere.

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