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Formation flying is commonly identified as the collective usage of two or more cooperative spacecraft to exercise the function of a single monolithic virtual instrument. The distribution of tasks and payloads among fleets of coordinated smaller satellites offers the possibility to overcome the classical limitations of traditional single-satellite systems. The science return is enhanced through observations made with larger, configurable baselines and an improved degree of redundancy can be achieved in the event of failures. Different classes of formation flying missions are currently under discussion within the engineering and science community: technology demonstration missions, synthetic aperture interferometers and gravimeters for Earth observation, multi-spacecraft interferometers in the infrared and visible wavelength regions as a key to new astrophysics discoveries and to the direct search for terrestrial exoplanets. These missions are characterized by different levels of complexity, mainly dictated by the payload metrology and actuation needs, and require a high level of on-board autonomy to satisfy the continuously increasing demand of relative navigation and control accuracy. This dissertation presents the first realistic demonstration of a complete guidance, navigation and control (GNC) system for formation flying spacecraft in low Earth orbit. Numerous technical contributions have been made during the course of this research in the areas of formation flying guidance, GPS-based relative navigation, and impulsive relative orbit control, but the primary contribution of this thesis does not lie in one or more of these disciplines. The innovation and originality of this work stems from the design and implementation of a comprehensive formation flying system through the successful integration of various techniques. This research has led to the full development, testing and validation of the GNC flight code to be embedded in the on-board computer of the active spacecraft of the PRISMA technology demonstration. Furthermore key guidance and control algorithms presented here are going to be demonstrated for the first time in the TanDEM-X formation flying mission. Overall this thesis focuses on realistic application cases closely related to upcoming missions. The intention is to realize a practical and reliable way to formation flying: a technology that is discussed and studied since decades but is still confined in research laboratories. Hardware-in-the-loop real-time simulations including a representative flight computer and the GPS hardware architecture show that simple techniques, which exploit the natural orbit motion to full extent, can meet the demanding requirements of long-term close formation-flying.
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Biological discovery & engineering.
The Zhang Lab explores and studies biological diversity to understand nature and discover systems and processes that may be harnessed through bioengineering for the improvement of human well-being.
Areas of Interest and Open Challenges:
Developing Programmable Therapeutics Can we accelerate the development of new therapeutics? We aim to create modular systems that interchangeably combine a therapeutic molecule, such as a gene editing construct, and a delivery vehicle. By focusing on creating compatible and extensible platforms for both intervention and delivery, we can rapidly generate a large number of therapeutics tailored for a wide range of contexts.
Restoring Cellular Homeostasis Can we modulate cell state without changing cell fate? Our goal is to identify approaches that we can use to tune cell state. These approaches will provide a new therapeutic avenue for treating conditions that don’t have a defined genetic cause, like injury, degenerative diseases, and even aging.
Discovering Natural Systems Can we uncover new biology by mining natural diversity? We are interested in advancing our understanding of molecular mechanisms, cellular functions, and even organismal biology through the discovery of natural systems. We use computational and experimental approaches to find and characterize new systems.
Dr. Zhang is a molecular biologist focused on improving human health. He played an integral role in the development of two revolutionary technologies, optogenetics and CRISPR-Cas systems, including pioneering the use of Cas9 for genome editing and discovering CRISPR-Cas12 and Cas13 systems and developing them for therapeutic and diagnostic applications. Current research in the Zhang laboratory is centered on the discovery of novel biological systems and processes, uncovering their mechanisms, and developing them into molecular tools and therapies to study and treat human disease. Zhang is a core member of the Broad Institute, an Investigator at the McGovern Institute for Brain Research, the James and Patricia Poitras Professor of Neuroscience at MIT, and a Howard Hughes Medical Investigator. He is also a member of the National Academy of Sciences, the National Academy of Medicine, and the American Academy of Arts and Sciences as well as a fellow in the National Academy of Inventors.
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Congratulations to dr. naomi intrator for successfully defending her ph.d. thesis.
on successfully defending her Ph.D. thesis on
Bess B. Ward, Satish Myneni, Xinning Zhang and Julie Granger (University of Connecticut)
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Robin DiAngelo alleged to have copied parts of doctoral thesis from Asian-American scholars
The bestselling author of a book about “white fragility” has been accused of plagiarising sections of the work of two Asian-Americans in her doctoral thesis.
Robin DiAngelo, an anti-racism consultant who argues that racial divisions have been entrenched by “defensive” white people, committed 20 cases of plagiarism, according to a complaint filed with her alma mater, the University of Washington.
Ms DiAngelo’s book White Fragility became a New York Times bestseller when it was published in 2018, and also experienced a surge in popularity following the death of George Floyd and the Black Lives Matter protests in 2020.
The 67-year-old has previously written about the importance of properly attributing the work of ethnic minority writers in a section on her website about how white people must “continually educate” themselves on race.
Her thesis allegedly lifts two paragraphs from Thomas Nakayama, an Asian-American professor with Northeastern University, and his co-author, Robert Krizek, without attribution, The Washington Free Beacon reported .
In making its case the newspaper published large excerpts from her work alongside the text she is accused of copying, with the similarities highlighted in red.
In one section, Prof Nakayama and Prof Krizek wrote: “While this discourse recognises a part of its historical constitution … this reflexivity does not necessarily mean that there has been a recognition of the power relations embedded in that history.”
Similarly, Ms DiAngelo wrote in her 2004 thesis: “While this discourse recognises in part a historical constitution, this does not necessarily indicate that there is a recognition of the power relations embedded in that history.”
Her “Whiteness in Racial Dialogue” dissertation is also reported to have lifted material from Stacey Lee, an Asian-American professor of education, summarising the work of a third scholar.
Prof Lee wrote that David Theo Goldberg “argues that the questions surrounding racial discourse should focus not so much on how true stereotypes are, but on how the truth-claims they offer are a part of a larger worldview, and what forms of action that worldview authorises”.
Ms DiAngelo wrote: “Goldberg … argues that the questions surrounding racial discourse should not focus so much on how true stereotypes are, but how the truth claims they offer are a part of a larger worldview that authorises.”
Peter Wood, the president of the National Association of Scholars, likened the practice to “forgery.”
“It is never appropriate to use the secondary source without acknowledging it, and even worse to present it as one’s own words,” said Mr Wood, a former provost of Boston University. He added: “That’s plagiarism.”
Ms DiAngelo has previously emphasised the importance of providing proper academic citation, writing on her website: “Always cite and give credit to the work of BIPOC [black, indigenous and people of colour] people who have informed your thinking.”
She added: “When you use a phrase or idea you got from a BIPOC person, credit them.”
The University of Washington defines plagiarism as “borrowing the structure of another author’s phrases or sentences” without credit, or citing a source but reproducing their exact words without quotation marks.
Among her other alleged examples of plagiarism, Ms DiAngelo seemingly lifts two sentences from Bronwyn Davies, a professorial fellow at the University of Melbourne .
Both write of how “an individual emerges through the processes of social interaction” as “one who is constituted and reconstituted through the various discursive practices in which they participate”.
“It does look like plagiarism,” Prof Davies told The Washington Free Beacon.
In her book, Ms DiAngelo characterised “white fragility” as the “defensive moves that white people make when challenged racially, characterised by emotions such as anger, fear, and guilt”, entrenching racial inequalities.
Ms DiAngelo and her publisher, Beacon Press, have been approached for comment.
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Kroemer, O. (2015). Machine Learning for Robot Grasping and Manipulation, PhD Thesis . Bib. Muelling, K. (2013). Modeling and Learning of Complex Motor Tasks: A Case Study with Robot Table Tennis, PhD Thesis . Bib. Wang, Z. (2013). Intention Inference and Decision Making with Hierarchical Gaussian Process Dynamics Model, PhD Thesis . Bib.
This dissertation presents several related algorithms that enable important capabilities for self-driving vehicles. Using a rotating multi-beam laser rangefinder to sense the world, our vehicle scans millions of 3D points every second. ... A second key challenge in autonomous navigation is reliable localization in the face of uncertainty. Using ...
Connected and autonomous vehicle (CAV) technologies provide disruptive and transformational opportunities for innovations toward intelligent transportation systems. Compared with human driven vehicles (HDVs), the CAVs can reduce reaction time and human errors, increase traffic mobility and will be more knowledgeable due to vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I ...
PhD. Aerospace Engineering. University of Michigan, Horace H. Rackham School of Graduate Studies ... Autonomous vehicle (AV) technology promises safer, cleaner, and more efficient transportation, as well as improved mobility for the young, elderly, and disabled. ... This dissertation investigates game-theoretic and set-based methods to address ...
Stanford Computer Science
Intelligent Vehicles Symposium, 2011. This paper is a broad summary of recent work on Junior, Stanford's autonomous vehicle. Topics covered include object recognition, sensor calibration, planning, control, etc. pdf , bib. Traffic Light Mapping, Localization, and State Detection for Autonomous Vehicles.
Motion Planning of Autonomous Vehicles by Yadollah Rasekhipour A thesis presented to the University of Waterloo in ful llment of the thesis requirement for the degree of Doctor of Philosophy in Mechanical and Mechatronics Engineering Waterloo, Ontario, Canada, 2017 c Yadollah Rasekhipour 2017
According to data from the CSUC, the UAB is the number 1 university in Catalonia in terms of doctoral thesis output. Almost a third of all theses read within the Catalan university system are read at the UAB. 26.3% of the theses deposited in the TDX were from PhD programmes at the UAB. In the context of the whole of Spain, the thesis repository ...
PhD Theses. Open-source Software. Datasets. Workshops. ICRA2018 Workshop on Robotic Vision and Action in Agriculture. IROS 2016 State Estimation and Terrain Perception. IROS 2016 Special session on Autonomous Farming Technologies and Agricultural Robotics. Industry & Spin-offs. Industry & Spin-offs See overview close.
ORIGIN AND KEY IMPACTS OF AUTONOMOUS VEHICLES 16 2.1 The automotive industry today 16 2.2 Brief history of autonomous vehicles 17 2.3 Autonomous vehicles explained 18 2.4 Key impacts of autonomous vehicles 20 2.4.1 Passenger productivity and time usage 20 2.4.2 Traffic flow and congestion 22 2.4.3 Costs, savings and vehicle ownership 25
Digital Commons University of South Florida (USF)
Motion planning is essential for an autonomous vehicle to perform safe and humanlike driving behaviors, especially in highly dynamic scenarios such as dense urban and highway environments. The motion planning problem is challenging in that it needs to handle static and dynamic obstacles and obey kinematic and dynamic constraints as well as traffic rules. In this work, we propose an efficient ...
PhD Theses. Dr Daizy Rajput (2023). Optimal Transmission System for Energy-Efficient Hybrid Electrified Powertrains. Coventry University. Supervised by Dr Arash M. Dizqah (PI, University of Sussex), Dr Mauro S. Innocente (DoS), Dr José M. Herreros (University of Birmingham) Paolo Grasso (2022). Towards an autonomous wildfire suppression system ...
This dissertation is submitted for the degree of Doctor of Philosophy ... technical queries during my PhD research. I am grateful to all my colleagues and friends, namely Zuyuan Zhu, Qiang Liu, Ruihao ... Autonomous driving is a major state-of-the-art step that has the potential to transform the
Final Thesis AUTONOMOUS DRIVING AND ITS FUTURE IMPACT ON MOBILITY: An analysis of perception in EU Supervisor Prof. Pietro Lanzini Graduand Leonardo Bertoldi 867681 Academic Year 2018 / 2019 . i . ii Title of the research: Autonomous driving and its future impact on mobility: An analysis of perception in EU Author: Leonardo Bertoldi - 867681 ...
Autonomous driving in realistic traffic situations remains a challenging problem for future cars. The DARPA ... six PhD theses [1-6] and numerous publications, for example [7-11]. 1. PhD thesis subject Research work The proposed PhD work shall focus on the development of models and methods for autonomous driving in
The Dynamic Design Lab's autonomous electric DeLorean, MARTY, repeatedly executes a highly dynamic figure 8 drifting maneuver. During the rapid transitions between +/- 40 degrees of drift angle, the vehicle steers lock-to-lock in about a second, reaching yaw rates as high as 120 deg/s. By studying how to control a vehicle in these extreme ...
Abstract: In this thesis we consider the problem of designing and implementing Model Predictive Controllers (MPC) for stabilizing the dynamics of an autonomous ground vehicle. For such a class of systems, the non-linear dynamics and the fast sampling time limit the real-time implementation of MPC algorithms to local and linear operating regions.
This thesis is about modelling, design and control of Miniature Flying Robots (MFR) with a focus on Vertical Take-Off and Landing (VTOL) systems and specifically, micro quadrotors. It introduces a ...
The research approach in the thesis was primarily that of qualitative research. The technical aspect of autonomous vehicles was explored by studying academic documents, while theories about the benefits of autonomous vehicles were explained with in-depth analyses based on practical data. In the thesis, theoretical
991012879762103412 HKUST Electronic Theses Motion planning and decision-making for autonomous systems : from quadrotors to autonomous vehicles by Wenchao Ding thesis 2020 xvi, 137 pages : illustrations ; 30 cm Autonomous systems have been widely deployed in various field applications,…Read more ›
991012762368203412 HKUST Electronic Theses Motion planning for autonomous flights : algorithms, systems, and applications by Fei Gao thesis 2019 xix, 169 pages : illustrations ; 30 cm As the development of autonomy in aerial robots, Micro Aerial Vehicle (MAV) has…Read more ›
This dissertation presents the first realistic demonstration of a complete guidance, navigation and control (GNC) system for formation flying spacecraft in low Earth orbit. Numerous technical contributions have been made during the course of this research in the areas of formation flying guidance, GPS-based relative navigation, and impulsive ...
The Dissertation Office provides information on the University's dissertation policies. We help doctoral students understand dissertation formatting and submission requirements, and we assist with the submission process. ... Contact the Dissertation Office. Web: phd.lib.uchicago.edu Email: [email protected] Phone: 773-702-7404 Visit: Suite ...
Biography. Dr. Zhang is a molecular biologist focused on improving human health. He played an integral role in the development of two revolutionary technologies, optogenetics and CRISPR-Cas systems, including pioneering the use of Cas9 for genome editing and discovering CRISPR-Cas12 and Cas13 systems and developing them for therapeutic and diagnostic applications.
A thesis submitted for examination at the University of Birmingham must be solely the postgraduate researcher's own work (except where University Regulations permit the inclusion of appropriately referenced collaborative research or work - see Regulation 7.4.1.A postgraduate researcher must not employ a 'ghost writer' to write parts or all of the thesis, whether in draft or as a final ...
The Department of Geosciences and Princeton University congratulates Dr. Naomi Intrator on successfully defending her Ph.D. thesis: "Copper's Role in Marine Denitrification: Phylogeny, Bioavailability, and Particulate Chemistry" on Wednesday, August 28, 2024.
Robin DiAngelo, the author and "anti-racism consultant" who rose to fame and made a fortune scolding white people for their inherent bigotry, has been accused of ripping off the work of two ...
The bestselling author of a book about "white fragility" has been accused of plagiarising sections of the work of two Asian-Americans in her doctoral thesis. Robin DiAngelo, an anti-racism ...