Future Space Problems And Their Solutions
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|Author||: Joseph J. Smulsky|
|Total Pages||: 320|
|Genre||: Celestial mechanics|
Download Future Space Problems and Their Solutions Book in PDF, Epub and Kindle
The emergence, existence and development of the surrounding world, both on Earth and throughout the universe, are due to the gravitational interactions of many bodies. This book is devoted to the calculation of bodies movements in various cases of interaction that are relevant now and in the future. They are developed for the free access of the Galactica system, which is designed to provide the numerical solution for problems of the gravitational interaction of N-bodies. It tackles a whole range of problems: The optimal motion of the spacecraft, the evolution of the solar system for 100 million years, the influence of the Sun on Mercurys perihelion, the motion of near-Earth asteroids, the evolution of Earth's rotation axis, etc. As a result of solving a number of problems, new knowledge about our world was obtained. The optimal trajectory of the spacecraft approaching the Sun is determined by numerical integration of the equations of motion for spacecraft, planets, the Sun, and the Moon. Exact solutions to the problem of the Newtonian gravitational interaction of N material points moving around N2 concentric circular orbits are reviewed. Each circular orbit contains N3 located bodies and the body system rotates as an entity. Solutions in various forms were obtained. A computer program has been developed. Structures comprising up to one million bodies have been calculated. The Galactica system is used for computing movements of two asteroids: Apophis and 1950DA. The evolution of their movement over a span of 1,000 years is investigated. The moments of their closest passages near the Earth are defined. The different ways of asteroid trajectory transformations into orbits of the Earths satellites are considered. This book proves that the rate of Mercurys perihelion rotation and relatively motionless space coincides with the Newtonian interaction of the planets and the oblate Sun. The issues connected with the Astronomical Theory of Ice Ages from the perspective of celestial mechanics are examined. Differential equations of rotational motion are solved with the help of the numerical method without simplification. The evolution of the Earth's axis was examined, and the periods of its oscillations that coincide with the observed ones were obtained. The calculations for a hundred thousand years demonstrate significant oscillation of the Earths axis. The oscillations of the Earths axis result in such oscillations of insolation that explain the paleoclimate changes. The exact solution to the problem, in which the bodies are uniformly distributed over a sphere, were obtained; they move experiencing no mutual collisions. The problem solution allows the formation of several planets for instance, one hundred planets resembling the Earth and moving under identical conditions with respect to the Sun. The latter possibility opens a way toward unrestricted progress for mankind. The book describes all the theoretical, practical issues and the Galactica system manual so that even a novice researcher could use it in his/her works.
|Author||: Lewis H. Abraham|
|Total Pages||: 16|
|Genre||: Space vehicles|
Download Important Structural Research Problems for the Support of Future Space Missions Book in PDF, Epub and Kindle
Developmental Problems and Their Solution for the Space Shuttle Main Engine Alternate Liquid Oxygen High pressure Turbopump Anomaly Or Failure Investigation the Key
|Author||: R. S. Ryan|
|Total Pages||: 79|
Download Developmental Problems and Their Solution for the Space Shuttle Main Engine Alternate Liquid Oxygen High pressure Turbopump Anomaly Or Failure Investigation the Key Book in PDF, Epub and Kindle
|Author||: National Research Council,Division on Engineering and Physical Sciences,Aeronautics and Space Engineering Board,Space Studies Board,Committee on Meeting the Workforce Needs for the National Vision for Space Exploration|
|Publsiher||: National Academies Press|
|Total Pages||: 60|
Download Issues Affecting the Future of the U S Space Science and Engineering Workforce Book in PDF, Epub and Kindle
In January 2006, the President announced a new civilian space policy focusing on exploration. As part of its preparations to implement that policy, NASA asked the NRC to explore long-range science and technology workforce needs to achieve the space exploration vision, identify obstacles to filling those needs, and put forward solutions to those obstacles. As part of the study, the NRC held a workshop to identify important factors affecting NASAâ€™s future workforce and its capacity to implement the exploration vision. This interim report presents a summary of the highlights of that workshop and an initial set of findings. The report provides a review of the workforce implications of NASAâ€™s plans, an assessment of science and technology workforce demographics, an analysis of factors affecting the aerospace workforce for both NASA and the relevant aerospace industry, and preliminary findings and recommendations. A final report is scheduled for completion in early 2007.
|Author||: Dr Graham Walton,Professor Graham Matthews|
|Publsiher||: Ashgate Publishing, Ltd.|
|Total Pages||: 248|
|Genre||: Language Arts & Disciplines|
Download University Libraries and Space in the Digital World Book in PDF, Epub and Kindle
This timely book addresses physical space in university libraries in the digital age. It considers the history of the use of space, integrates case studies from around the world with theoretical perspectives, explores recent developments including new build and refurbishment. With users at the forefront, chapters cover different aspects of learning and research support provision, shared services, and evaluation of space initiatives. Library staff requirements and green issues are outlined. The book also looks to the future, identifying the key strategic issues and trends that will influence and shape future library spaces. The authors are international, senior university library managers and academics who provide a range of views and approaches and experience of individual projects and initiatives.
|Author||: Brian Donnellan,Markus Helfert,Jim Kenneally,Debra VanderMeer,Marcus Rothenberger,Robert Winter|
|Total Pages||: 506|
Download New Horizons in Design Science Broadening the Research Agenda Book in PDF, Epub and Kindle
This book constitutes the thoroughly refereed proceedings of the 10th International Conference on Design Science Research in Information Systems and Technology, DESRIST 2015, held in Dublin, Ireland, in May 2015. The 22 full papers, 11 short papers and 10 short papers describing prototypes and products were carefully reviewed and selected from 111 submissions. The papers are organized in topical sections on design science research in action; meta perspectives; data mining and analytics; emerging themes; design practice and design thinking; and prototypes.
|Author||: Runqi Chai,Al Savvaris,Antonios Tsourdos,Senchun Chai|
|Total Pages||: 207|
|Genre||: Technology & Engineering|
Download Design of Trajectory Optimization Approach for Space Maneuver Vehicle Skip Entry Problems Book in PDF, Epub and Kindle
This book explores the design of optimal trajectories for space maneuver vehicles (SMVs) using optimal control-based techniques. It begins with a comprehensive introduction to and overview of three main approaches to trajectory optimization, and subsequently focuses on the design of a novel hybrid optimization strategy that combines an initial guess generator with an improved gradient-based inner optimizer. Further, it highlights the development of multi-objective spacecraft trajectory optimization problems, with a particular focus on multi-objective transcription methods and multi-objective evolutionary algorithms. In its final sections, the book studies spacecraft flight scenarios with noise-perturbed dynamics and probabilistic constraints, and designs and validates new chance-constrained optimal control frameworks. The comprehensive and systematic treatment of practical issues in spacecraft trajectory optimization is one of the book’s major features, making it particularly suited for readers who are seeking practical solutions in spacecraft trajectory optimization. It offers a valuable asset for researchers, engineers, and graduate students in GNC systems, engineering optimization, applied optimal control theory, etc.
|Author||: United States. President|
|Total Pages||: 135|
Download Aeronautics and Space Report of the President Activities Book in PDF, Epub and Kindle
|Author||: Svetlana Igorevna Ashmarina,Jakub Horák,Jaromír Vrbka,Petr Šuleř|
|Publsiher||: Springer Nature|
|Total Pages||: 890|
|Genre||: Technology & Engineering|
Download Economic Systems in the New Era Stable Systems in an Unstable World Book in PDF, Epub and Kindle
This proceedings book presents outcomes of the Innovative Economic Symposium – 2020 organized by the Institute of Technology and Business in České Budějovice (VŠTE) in Russia in collaboration with two universities: Financial University under the Government of the Russian Federation (Moscow) and Samara State University of Economics (Samara). The symposium aims to bring together experts and young scientists in economy, management, international relations, finance, marketing, and professional education from Asian and European countries, to share knowledge and experience and discuss issues related to stable economic development, international business, entrepreneurship, Industry 4.0, cooperation between educational and business structures, strategic decision-making, and processes of economic globalization and fragmentation. The book consists of two parts corresponding to the thematic symposium areas. The book content covers two sections: stable development in unstable world and globalization and fragmentation forces of the current world economy. The main topics included in the book are as follows: - Where is the world moving to and where is the economy in it? - Institutionalization of innovations. - Network architecture of economic relations. - Competences for the future. - Smart change management. - Monetary and fiscal policy development as a factor of economic modernization. - Role of international trade in the economy globalization. - Impact of globalization and economic fragmentation on the enterprise’s internal environment. - Financial conditions for entrepreneurship under the economic modernization. - Impact of scientific and technological progress on globalization and fragmentation of the economy.
|Author||: Karen Saxe|
|Publsiher||: Springer Science & Business Media|
|Total Pages||: 197|
Download Beginning Functional Analysis Book in PDF, Epub and Kindle
The unifying approach of functional analysis is to view functions as points in abstract vector space and the differential and integral operators as linear transformations on these spaces. The author's goal is to present the basics of functional analysis in a way that makes them comprehensible to a student who has completed courses in linear algebra and real analysis, and to develop the topics in their historical contexts.
|Author||: Maxime Hardy|
|Publsiher||: Scientia Rerum (academic publishers), Paris|
|Total Pages||: 213|
Download Convexity and connectivity of the solution space in machine learning problems Book in PDF, Epub and Kindle
ScientiaRerum Thesis — 2018. This thesis investigates properties of the solution space of the machine-learning problem of random pattern classification. Such properties as convexity of the space of solutions, its connectivity and clusterization are studied. Evidence has been provided recently that there exists a universality class for random pattern classification models, making it possible to study the properties of the whole set of constraint satisfaction problems using the most simple model, the perceptron with spherical constraint: it is exactly solvable and exhibits the full stack of charactetistic properties of that class. In order to obtain statistically representative treatment of the model (as opposed to the best/worst-case scenarios), we used the well established methods of theoretical physics of disordered systems (a.k.a. spin glasses). In terms of that science, this model can be interpreted as a random packing problem and demonstrates the phenomenology of slow glassy relaxation and a jamming transition. The specific property of that model is that the corresponding constraint satisfaction problems ceases to be convex. The non-convex domain is exproled in detail in this thesis and its structure is presented on a phase diagram.Publisher : Scientia Rerum (academic publishers), Paris