scholarly journals VALIDATION OF THE STEREO OBSERVATION STRATEGY OF SIMBIO-SYS USING A VIRTUAL SIMULATOR

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 1143-1150
Author(s):  
C. Re ◽  
N. Borin ◽  
E. Simioni ◽  
F. Lazzarotto ◽  
M. Zusi ◽  
...  
Keyword(s):  
Simulation System ◽  
Original Version ◽  
Editorial Note ◽  
Valuable Contribution ◽  
Projection Model ◽  
Mercury Surface ◽  
Observation Strategy ◽  
Definition Of ◽  
Observation Geometry ◽  
Observation Strategies

Abstract. The Spectrometer and Imagers for MPO BepiColombo Integrated Observatory SYStem (SIMBIO-SYS) is a suite of three independentoptical heads that will provide images and spectroscopic observations of the Mercury surface. With the approaching of BepiColombo to Mercury, the definition of the observation strategies of each instrument is becoming mandatory also for testing the operation procedures in terms of feasibility and stereo performance. The use of synthetic images and a customized simulator have been considered a powerful way to accomplish this test. This simulation system allows to investigate all the possible stereo configurations (different stereo angles and different image combinations) with the opportunity to evaluate the operational feasibility thanks to the evaluation of the final stereo products. Working with a simulated dataset allows to control most of the geometrical aspects (both the projection model definition and the observation geometry) suggesting with the analysis of the stereo products the better configuration to be applied and to be considered in the definition of the observation strategy. Editorial note: The article originally published here accidentally contained copyrighted information. For this reason, both authors and editor agreed to retract the original article and replace it with a revised version. The editors confirm that the scholarly content is not affected and remains a valuable contribution to the proceedings. Should you have downloaded the original version of this article (prior to 9 October 2020), you are kindly asked to delete it and refrain from any redistribution. Thank you, the editors.

scholarly journals Instrument observation strategy for a new generation of three-axis-stabilized geostationary meteorological satellites from China

2019 ◽  
Vol 8 (2) ◽  
pp. 161-175
Author(s):  
Jian Shang ◽  
Lei Yang ◽  
Pan Huang ◽  
Huizhi Yang ◽  
Chengbao Liu ◽  
...  
Keyword(s):  
Attitude Control ◽  
Mode Design ◽  
The Earth ◽  
Observation Strategy ◽  
Ground System ◽  
Image Navigation ◽  
Complicated Part ◽  
New Generation ◽  
Observation Strategies ◽  
Instrument Observation

Abstract. The Fengyun-4 (FY-4) satellite series is a new generation of geostationary meteorological satellites from China. The newly adopted three-axis-stabilized attitude-control platform can increase observation efficiency and flexibility while bringing great challenges for image navigation as well as integrated observation mode design. Considering the requirements of earth observation, navigation and calibration as well as observation flexibility, instrument observation strategies are proposed. These include the earth, the moon, stars, cold space, blackbody and diffuser observations on which the instruments' in-orbit daily observations must be based. The most complicated part is the star observation strategy, while navigation precision is dependent on in-orbit star observations. A flexible, effective, stable and automatic star observation strategy directly influences star data acquisition and navigation precision. According to the requirement of navigation, two specific star observation strategies for the two main instruments on board FY-4A were proposed to be used in the operational ground system. The strategies have been successfully used in FY-4A in-orbit tests for more than a year. Both the simulation results and in-orbit application results are given, including instrument observation strategies, star observation strategies and moon observation tasks, to demonstrate the validity of the proposed observation strategies, which lay important foundations for the instruments' daily operation.

Building a Health Care Multi-Agent Simulation Sysmte with Role-Based Modeling

2011 ◽  
pp. 694-716
Author(s):  
Xiaoquin Zhang ◽  
Haiping Xu ◽  
Bhavesh Shrestha
Keyword(s):  
Health Care ◽  
Integrated Approach ◽  
Simulation System ◽  
Development Environment ◽  
Data Control ◽  
Agent Simulation ◽  
Dynamic Task Allocation ◽  
Multi Agent ◽  
Role Based ◽  
Definition Of

Multi-Agent System (MAS) is a suitable programming paradigm for simulating and modeling health care systems and applications, where resources, data, control and services are widely distributed. We have developed a multi-agent software prototype to simulate the activities and roles inside a health care system. The prototype is developed using a framework called Role-based Agent Development Environment (RADE). In this chapter, the authors present an integrated approach for modeling, designing and implementing a multi-agent health care simulation system using RADE. They describe the definition of role classes and agent classes, as well as the automatic agent generation process. The authors illustrate the coordination problem and present a rule-based coordination approach. In the end, they present a runtime scenario of this health care simulation system, which demonstrates that dynamic task allocation can be achieved through the creation of role instances and the mapping from role instances to agents. This scenario also explains how agents coordinate their activities given their local constraints and interdependence among distributed tasks.

Building a Health Care Multi-Agent Simulation Sysmte with Role-Based Modeling

2010 ◽  
pp. 90-111 ◽  
Author(s):  
Xiaoquin Zhang ◽  
Haiping Xu ◽  
Bhavesh Shrestha
Keyword(s):  
Health Care ◽  
Integrated Approach ◽  
Simulation System ◽  
Development Environment ◽  
Data Control ◽  
Agent Simulation ◽  
Dynamic Task Allocation ◽  
Multi Agent ◽  
Role Based ◽  
Definition Of

Multi-Agent System (MAS) is a suitable programming paradigm for simulating and modeling health care systems and applications, where resources, data, control and services are widely distributed. We have developed a multi-agent software prototype to simulate the activities and roles inside a health care system. The prototype is developed using a framework called Role-based Agent Development Environment (RADE). In this chapter, the authors present an integrated approach for modeling, designing and implementing a multi-agent health care simulation system using RADE. They describe the definition of role classes and agent classes, as well as the automatic agent generation process. The authors illustrate the coordination problem and present a rule-based coordination approach. In the end, they present a runtime scenario of this health care simulation system, which demonstrates that dynamic task allocation can be achieved through the creation of role instances and the mapping from role instances to agents. This scenario also explains how agents coordinate their activities given their local constraints and interdependence among distributed tasks.

scholarly journals Instrument observation strategy of new generation three-axis stabilized geostationary meteorological satellite of China

2019 ◽  
Author(s):  
Jian Shang ◽  
Pan Huang ◽  
Huizhi Yang ◽  
Chengbao Liu ◽  
Jing Wang ◽  
...  
Keyword(s):  
Attitude Control ◽  
The Earth ◽  
Observation Strategy ◽  
Geostationary Meteorological Satellite ◽  
Image Navigation ◽  
Complicated Part ◽  
New Generation ◽  
Observation Strategies ◽  
Meteorological Satellite ◽  
Instrument Observation

Abstract. Fengyun-4 (FY-4) satellite series is the new generation of geostationary meteorological satellite of China. Thenewly adopted three-axis stabilized attitude control platform can increase observation efficiency and flexibility, while bringing great challenge to image navigation as well as integrated observation mode design. Considering the requirements of the earth observation, navigation and calibration besides observation flexibility, instrument observation strategies are proposed, including the earth, the moon, stars, cold space, blackbody, diffuser observations, on which the instruments' in-orbit daily observations must be based. The most complicated part is star observation strategy, while navigation precision is dependent on in-orbit star observations. Flexible, effective, stable and automatic star observation strategy directly influences obtaining star data and navigation precision. According to the requirement of navigation, two specific star observation strategies for the two main instruments onboard FY-4 were proposed to be used in the operational ground system. The strategies have been successfully used in FY-4 in-orbit test for more than a year. Both the simulation results and in-orbit application results are given, including instrument observation strategies, star observation strategies and moon tasks, to demonstrate the validity of the proposed observation strategies, which lay important foundations for the instruments' daily operation.

Research for Reusable Component Technology Base on Virtual Simulation System

2014 ◽  
Vol 543-547 ◽  
pp. 3330-3334
Author(s):  
Xiang Wei ◽  
Hui Nv Chen ◽  
Jin Shu Wang
Keyword(s):  
Software Development ◽  
Structural Design ◽  
Simulation System ◽  
Training System ◽  
Virtual Simulation ◽  
Component Technology ◽  
Interaction Mechanisms ◽  
Reusable Component ◽  
Virtual Device ◽  
Definition Of

Componentbased development has reusability,maintainability and scalability characteristics. This paper presents a design application components which in the virtual device emulation software development, the definition of virtual device emulation component, betweenclass structural design and component interaction mechanisms of the program in the application of the proposed training system and achieved good results.

scholarly journals Erratum to “Hierarchizing graph-based image segmentation algorithms relying on region dissimilarity: the case of the Felzenszwalb-Huttenlocher method”

2019 ◽  
Vol 3 (1) ◽  
pp. 71
Author(s):  
Silvio Guimarães ◽  
Yukiko Kenmochi ◽  
Jean Cousty ◽  
Zenilton Patrocinio ◽  
Laurent Najman
Keyword(s):  
Image Segmentation ◽  
Mathematical Morphology ◽  
Original Version ◽  
Segmentation Algorithms ◽  
Definition Of

AbstractThe original version of the article was published in Mathematical Morphology - Theory and Applications 2 (2017) 55–75. Unfortunately, the original version contains a mistake: in the definition of Dif (C1, C2) in Section 3.6, max should be replaced by min. In this erratum we correct the formula defining Dif (C1, C2).

scholarly journals Influence of Indirect Solar Irradiance on Satellite Observation

2021 ◽  
Author(s):  
Xia Wang ◽  
Zhi LI ◽  
Can Xu ◽  
Yurong Huo ◽  
Yifan Wu
Keyword(s):  
Light Source ◽  
Solar Irradiance ◽  
Satellite Observation ◽  
Optical Characteristics ◽  
Space Domain ◽  
Observation Strategy ◽  
Actual Observation ◽  
Long Time ◽  
Observation Geometry ◽  
Observation Results

Abstract With the development of Space Domain Awareness(SDA), satellites’ optical characteristics are becoming attention-grabbing. Sunlight was usually considered the only light source for the satellites. However, in the actual observation, researchers have found that earthshine and moonlight would increase errors of the observation results, which have greatly influence the estimation of the satellite’s state. In order to avoid this influence, we propose an observation strategy. Firstly, we propose an accurate earthshine model, which considers the earth’s volume and favors long-time continuous satellite observation. Then, we explore the earthshine and moonlight’s impact on satellite observation results and find that this impact varies with the satellite attributes. Furthermore, we Figure out the law of this impact and establish a connection between this law and observation geometry. Finally, a Period Contribution model is proposed to provide a corresponding observation strategy to avoid the influence of earthshine and moonlight.

Aufbruch an den Rand der Philosophie

2018 ◽  
Vol 66 (1) ◽  
pp. 98-111
Author(s):  
Dieter Thomä
Keyword(s):  
Reference Point ◽  
Continental Philosophy ◽  
Logical Analysis ◽  
Original Version ◽  
Editorial Note ◽  
National Socialist ◽  
Current State ◽  
Inaugural Lecture ◽  
The Status ◽  
First Time

Abstract The recently discovered first draft of Heidegger’s What Is Metaphysics?, his Inaugural Lecture in Freiburg from 1929, is published here for the first time. It differs from the version known so far in numerous, philosophically relevant details. The first draft is marked by a fierce attack on “science,” a dramatic invocation of “nothingness,” and a sharp critique of the current state of philosophy or of philosophy as such. An editorial note addresses philological issues concerning the status of this text and its authenticity. An extended commentary situates it within Heidegger’s writings of the period and discusses its preparatory role with regard to his National-Socialist turn. As What Is Metaphysics? – together with Carnap’s response in “Overcoming Metaphysics Through Logical Analysis of Language” – serves as a reference point for the great divide between so-called analytic and so-called continental philosophy, this original version is an opportunity to reassess its premises and limits.

scholarly journals Systemic Gifted Education: A Theoretical Introduction

2017 ◽  
Vol 61 (3) ◽  
pp. 183-193 ◽  
Author(s):  
Albert Ziegler ◽  
Heidrun Stoeger
Keyword(s):  
Education Research ◽  
Gifted Education ◽  
Learning Sciences ◽  
Valuable Contribution ◽  
Systemic Thinking ◽  
The Third ◽  
The Past ◽  
Systemic Model ◽  
Basic Concepts ◽  
Definition Of

Over the past few decades, systemic thinking has gained in popularity in developmental and learning sciences. The trend has, however, shown up in gifted education research only occasionally. The aim of this article is to introduce systemic thinking to the field of giftedness and explore possibilities for its application. In the first part, a definition of a system is provided and basic concepts of systemic thinking are introduced. In the second part, a full-fledged systemic model is introduced, the actiotope model of giftedness. In the third part, implications for gifted education are elaborated. In the discussion, the authors explain (a) how systemic thinking can make a valuable contribution to gifted education, (b) why systemic thinking will complement rather than replace current approaches to gifted education, and (c) the necessity of combining systemic thinking with other empirically testable theories.

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