A systematized approach to AVHRR image navigation

Accurate co-location and geo-registration of AVHRR (Advanced Very High Resolution Radiometer) is necessary for most applications involving these data. To obtain the necessary accuracy, most of the current systems available for AVHRR image rectification require corrections to errors arising from several different sources. This paper presents a software package which is able to correct registration errors from all sources using effective roll, pitch, and yaw values determined from ground control point offsets. These effective values are used to establish a baseline registration against which other models are compared. Spacecraft and sampling geometry are revisited in order to systemize and better define the procedure of AVHRR geo-registration. This systematic approach has resulted in a modular software package which has a registration accuracy of 1 satellite pixel, and is easily modified and improved.

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Converting Paradoxs QBE Set Queries Into Access 2000 SQL

Review of Business Information Systems (RBIS) ◽

10.19030/rbis.v6i2.4570 ◽

2002 ◽

Vol 6 (2) ◽

pp. 43-56

Author(s):

Mohammad Dadashzadeh

Keyword(s):

Software Package ◽

Systematic Approach ◽

Query Language ◽

Complex Queries ◽

Microsoft Access ◽

On Line ◽

Analytical Processing ◽

Accounting Software ◽

High Level ◽

Very High

One of the most important promises of the move to an SQL-based accounting software package has been that it frees the accountant from the necessity of resorting to a programmer when retrieving information from the organization's database in response to unanticipated managerial needs. That promise is founded, in part, on the availability of a very high-level, visual relational query language interface known as Query By Example (QBE). Unfortunately, the implementation of QBE in Microsoft Access 2000 fails to support users in formulating complex queries involving set comparison that tend to arise in on-line analytical processing (OLAP) situations. And, while Paradoxs implementation of QBE makes the formulation of such queries quite intuitive, its built-in SQL translation feature fails to provide a clue on how to convert such queries into SQL. This paper presents a systematic approach based on formulating complex set queries in Paradoxs richer QBE notation and translating them into SQL queries that can be handled by Access 2000.

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ITVT-07. Robotic alignment module Cirq for navigated brainstem tumor biopsies

Neuro-Oncology ◽

10.1093/neuonc/noab196.919 ◽

2021 ◽

Vol 23 (Supplement_6) ◽

pp. vi229-vi229

Author(s):

Kirsten van Baarsen ◽

Peter Woerdeman ◽

Mariam Slot ◽

Eelco Hoving

Keyword(s):

Brain Stem ◽

3D Ct ◽

Registration Accuracy ◽

Brainstem Tumor ◽

Intended Target ◽

Registration Errors ◽

Surgical Devices ◽

Brain Stem Tumors ◽

Tumor Biopsies ◽

Euclidian Distances

Abstract BACKGROUND With the incorporation of the robotic alignment module Cirq (Brainlab, Germany) into our neurosurgical armamentarium, we aimed to know our baseline accuracy in stererotactic biopsies. We therefore retrospectively reviewed our data on biopsy accuracy for brain(stem) tumors using the non-robotic alignment instrument Varioguide (Brainlab, Germany). Because of unexpectedly large deviations from the intended target, we sought to improve our registration accuracy when we introduced Cirq. Intraoperative 3D CT with bone fiducials was added to the pre-operative 3D T1 MRI with skin fiducials. This made it possible to compare surgical devices as well as registration methods. AIMS To share our experience with the new robotic alignment module Cirq for navigated brain(stem) tumor biopsies and to evaluate its target accuracy with bone fiducial registration, as compared to the previously used Varioguide with skin fiducial registration. METHODS All patients (0–18 years old) that underwent a brain(stem) biopsy in our institution were included. Over 2018–2020, data were collected retrospectively (cohort Varioguide with 3D T1 MRI registration with skin fiducials). From 2021, data were collected prospectively (cohort Cirq with both 3D T1 MRI registration with skin fiducials and intraoperative CT registration with bone fiducials). For both cohorts, Euclidian distances were calculated between the intended target and the obtained target. For the prospective cohort, registration errors were calculated for bone versus skin fiducials. PRELIMINARY REUSLTS The deviation from the intended target was much smaller in the Cirq cohort versus the Varioguide cohort. Within the Cirq cohort, registration errors were submillimetric for bone fiducial registration as compared to several millimeters for skin fiducial registration. CONCLUSION: The Cirq robotic arm is convenient, safe and highly accurate, especially when combined with intraoperative 3D CT bone fiducial registration. Skin fiducial registration does not offer the level of precision that is mandatory in brainstem tumor biopsies.

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Monitoring and assessment of an oil spill event with very high resolution tools.

10.5194/egusphere-egu21-13528 ◽

2021 ◽

Author(s):

Ana M. Mancho ◽

Guillermo García-Sánchez ◽

Antonio G. Ramos ◽

Josep Coca ◽

Begoña Pérez-Gómez ◽

...

Keyword(s):

High Resolution ◽

Oil Spill ◽

In Situ Observation ◽

The European Union ◽

Horizon 2020 ◽

Research And Innovation ◽

Port Authorities ◽

Different Sources ◽

Very High

This presentation discusses a downstream application from Copernicus Services, developed in the framework of the IMPRESSIVE project, for the monitoring of &#160;the oil spill produced after the crash of the ferry &#8220;Volcan de Tamasite&#8221; in waters of the Canary Islands on the 21st of April 2017. The presentation summarizes the findings of [1] that describe a complete monitoring of the diesel fuel spill, well-documented by port authorities. Complementary information supplied by different sources enhances the description of the event. We discuss the performance of very high resolution hydrodynamic models in the area of the Port of Gran Canaria and their ability for describing the evolution of this event. Dynamical systems ideas support the comparison of different models performance. Very high resolution remote sensing products and in situ observation validate the description.Authors acknowledge support from IMPRESSIVE a project funded by the European Union&#8217;s Horizon 2020 research and innovation programme under grant agreement No 821922. SW acknowledges the support of ONR Grant No. N00014-01-1-0769References[1] G.Garc&#237;a-S&#225;nchez, A. M. Mancho, A. G. Ramos, J. Coca, B. P&#233;rez-G&#243;mez, E. &#193;lvarez-Fanjul, M. G. Sotillo, M. Garc&#237;a-Le&#243;n, V. J. Garc&#237;a-Garrido, S. Wiggins. Very High Resolution Tools for the Monitoring and Assessment of Environmental Hazards in Coastal Areas. &#160;Front. Mar. Sci. (2021) doi: 10.3389/fmars.2020.605804.

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TPVTrack v1.0: a watershed segmentation and overlap correspondence method for tracking tropopause polar vortices

Geoscientific Model Development ◽

10.5194/gmd-11-5173-2018 ◽

2018 ◽

Vol 11 (12) ◽

pp. 5173-5187 ◽

Cited By ~ 1

Author(s):

Nicholas Szapiro ◽

Steven Cavallo

Keyword(s):

Software Package ◽

Unstructured Grids ◽

Test Cases ◽

Watershed Segmentation ◽

Spatial Characterization ◽

Modular Software ◽

Mean Structure ◽

Spatial Shape ◽

Physical Features ◽

Effective Representation

Abstract. A new free modular software package is described for tracking tropopause polar vortices (TPVs) natively on structured or unstructured grids. Motivated by limitations in spatial characterization and time tracking within existing approaches, TPVTrack mimics the expected dynamics of TPVs to represent their (1) spatial structure, with variable shapes and intensities, and (2) time evolution, with mergers and splits. TPVs are segmented from the gridded flow field into spatial objects as restricted regional watershed basins on the tropopause, described by geometric metrics, associated over time by overlap similarity into major and minor correspondences, and tracked along major correspondences. Simplified segmentation and correspondence test cases illustrate some of the appeal, sensitivities, and limitations of TPVTrack, including effective representation of spatial shape and reduced false positive associations in time. Tracked TPVs in more realistic historical conditions are consistent in bulk with expectations of life cycle and mean structure. Individual tracks are less reliable when discriminating among multiple overlaps. Modifications to track other physical features are possible, with each application requiring evaluation.

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Sustainable Development Goals (SDG) and Economic Results in the Economic Sector of the Colombian Caribbean

10.4018/978-1-7998-8925-0.ch016 ◽

2022 ◽

pp. 281-305

Author(s):

Francisco Espasandín-Bustelo ◽

Lourdes Osorio Bayter

Keyword(s):

Interest Groups ◽

Secondary Data ◽

Material Object ◽

Economic Sector ◽

Collection Method ◽

Tourism Sector ◽

The Social ◽

Development Goals ◽

Different Sources ◽

Very High

This research is important for several reasons. First, companies are being pressured by different interest groups to contribute to the achievement of the SDGs; second, a very high percentage of companies are not even sensitive to the fact that the SDGs are important for their sustainability; thirdly, researchers, especially those in the social sciences, have not generated knowledge about the state of the SDGs in companies; and fourth, the tourism sector is important for the achievement of the SDGs. The data collection method focuses on the material object “hotel companies” and uses secondary data available in different sources. Among the most relevant results of the research, the authors highlight the following: first, the companies in the sample, although they do not seem to have a formal plan, implement one or more SDGs; in second place, the SDG implemented in the largest number of companies is gender equality; thirdly, the least implemented SDGs are quality education, clean water and sanitation, affordable and non-polluting energy, and reduction of inequalities.

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Towards Sub-Pixel Automatic Geometric Corrections of Very-High Resolution Panchromatic Satellite Data of Urban Areas

Remote Sensing ◽

10.3390/rs11091097 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1097 ◽

Cited By ~ 1

Author(s):

Aleš Marsetič ◽

Peter Pehani

Keyword(s):

Feature Extraction ◽

High Resolution ◽

Urban Areas ◽

Satellite Images ◽

Reference Data ◽

Geometric Model ◽

Control Point ◽

Satellite Image ◽

Extraction Algorithm ◽

Very High

This paper presents an automatic procedure for the geometric corrections of very-high resolution (VHR) optical panchromatic satellite images. The procedure is composed of three steps: an automatic ground control point (GCP) extraction algorithm that matches the linear features that were extracted from the satellite image and reference data; a geometric model that applies a rational function model; and, the orthorectification procedure. Accurate geometric corrections can only be achieved if GCPs are employed to precisely correct the geometric biases of images. Due to the high resolution and the varied acquisition geometry of images, we propose a fast, segmentation based method for feature extraction. The research focuses on densely populated urban areas, which are very challenging in terms of feature extraction and matching. The proposed algorithm is capable of achieving results with a root mean square error of approximately one pixel or better, on a test set of 14 panchromatic Pléiades images. The procedure is robust and it performs well in urban areas, even for images with high off-nadir angles.

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Development Level of Brand Management at Banks in Bosnia and Herzegovina

International Business Research ◽

10.5539/ibr.v11n1p66 ◽

2017 ◽

Vol 11 (1) ◽

pp. 66

Author(s):

Beriz Civic

Keyword(s):

Bosnia And Herzegovina ◽

Systematic Approach ◽

Ad Hoc ◽

Brand Management ◽

Management Development ◽

Management Decisions ◽

Research Results ◽

Development Level ◽

High Level ◽

Very High

The paper analyzes the development level of the brand management at the banks operating on the market of Bosnia and Herzegovina (BiH). The aim of the research was to establish to what extent certain elements of brand management are present and whether the brand management decisions are made based on the systematic or the ad hoc approach. The research results indicate that five banks in BiH have a very high level of brand management development. Making brand management related decisions for these banks is based on the systematic approach. It has been established that other banks in BiH have a lower level of brand management development and that for most banks in this group the process of making brand management decisions is characterized by the ad hoc approach.

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Operational Framework for Rapid, Very-high Resolution Mapping of Glacial Geomorphology Using Low-cost Unmanned Aerial Vehicles and Structure-from-Motion Approach

Remote Sensing ◽

10.3390/rs11010065 ◽

2019 ◽

Vol 11 (1) ◽

pp. 65 ◽

Cited By ~ 17

Author(s):

Marek W. Ewertowski ◽

Aleksandra M. Tomczyk ◽

David J. A. Evans ◽

David H. Roberts ◽

Wojciech Ewertowski

Keyword(s):

High Resolution ◽

Unmanned Aerial Vehicles ◽

Structure From Motion ◽

Low Cost ◽

Control Point ◽

Glacial Geomorphology ◽

High Resolution Mapping ◽

Aerial Vehicles ◽

Resolution Mapping ◽

Very High

This study presents the operational framework for rapid, very-high resolution mapping of glacial geomorphology, with the use of budget Unmanned Aerial Vehicles and a structure-from-motion approach. The proposed workflow comprises seven stages: (1) Preparation and selection of the appropriate platform; (2) transport; (3) preliminary on-site activities (including optional ground-control-point collection); (4) pre-flight setup and checks; (5) conducting the mission; (6) data processing; and (7) mapping and change detection. The application of the proposed framework has been illustrated by a mapping case study on the glacial foreland of Hørbyebreen, Svalbard, Norway. A consumer-grade quadcopter (DJI Phantom) was used to collect the data, while images were processed using the structure-from-motion approach. The resultant orthomosaic (1.9 cm ground sampling distance—GSD) and digital elevation model (7.9 cm GSD) were used to map the glacial-related landforms in detail. It demonstrated the applicability of the proposed framework to map and potentially monitor detailed changes in a rapidly evolving proglacial environment, using a low-cost approach. Its coverage of multiple aspects ensures that the proposed framework is universal and can be applied in a broader range of settings.

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Parasitology: today and tomorrow

Canadian Journal of Zoology ◽

10.1139/z87-129 ◽

1987 ◽

Vol 65 (4) ◽

pp. 812-822

Author(s):

D. F. Mettrick

Keyword(s):

New Technologies ◽

Control Point ◽

Experimental Studies ◽

High Standard ◽

Cellular Biology ◽

Parasitic Infections ◽

Host Parasite ◽

Canadian Research ◽

Very High

Parasites have, over the centuries, been responsible for high mortalities among humans and domestic and wild animals. The presence of parasitic infections has made vast areas of the world uninhabitable for both humans and animals. Major strengths of Canadian parasitology include wildlife parasitology, systematics, and taxonomy. Experimental studies in parasitology are limited; in particular the subdisciplines of parasite molecular and cellular biology, biochemistry, immunology, and neurobiology are very limited. There is concern that we will not be able to maintain the quality of Canadian research in parasitology, particularly in the emerging new technologies. It is greatly to the credit of those early Canadian parasitologists, who laid the foundations for today's advances in parasitology, that a relatively small group of approximately 100 professional parasitologists has today reached a very high standard of parasitological research. The next 25 years will be an exciting period as new insights allow us to further understand the complexity of host–parasite relationships. The development of new vaccines, drugs, and vector control point to significant reductions in parasitic infections.

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