Results 101 to 110 of about 481,935 (310)

Verification of KAM Theory on Earth Orbiting Satellites [PDF]

, 2010
This paper uses KAM torus theory and Simplified General Perturbations 4 (SGP4) orbit prediction techniques compiled by Dr. William Wiesel and compares it to Analytical Graphics ® Incorporated (AGI) Satellite Toolkit ® (STK) orbit data.
Bisher, Christian L.
core   +1 more source

A New Spin-Orbit Induced Universality Class in the Quantum Hall Regime ?

, 2001
Using heuristic arguments and numerical simulations it is argued that the critical exponent $\nu$ describing the localization length divergence at the quantum Hall transition is modified in the presence of spin-orbit scattering with short range ...
A. Kawabata, B. L. Altshuler, B. L. Altshuler, D. Shahar, E. P. De Poortere, F. Hohls, G. Bergmann, G. V. Mil’nikov, H. P. Wei, M. Stone, N. Zanon, N. F. Mott, S. Hikami, S. Koch, S. N. Evangelou, T. Ando, V. T. Dolgopolov, Y. Meir, Yigal Meir, Yshai Avishai   +19 more
core   +1 more source

Clinical applications of next‐generation sequencing‐based ctDNA analyses in breast cancer: defining treatment targets and dynamic changes during disease progression

Molecular Oncology, EarlyView.
Circulating tumor DNA (ctDNA) offers a possibility for different applications in early and late stage breast cancer management. In early breast cancer tumor informed approaches are increasingly used for detecting molecular residual disease (MRD) and early recurrence. In advanced stage, ctDNA provides a possibility for monitoring disease progression and
Eva Valentina Klocker, Samantha Hasenleithner, Rupert Bartsch, Simon P. Gampenrieder, Daniel Egle, Christian F. Singer, Gabriel Rinnerthaler, Michael Hubalek, Katja Schmitz, Zsuzsanna Bago‐Horvath, Andreas Petzer, Sonja Heibl, Ellen Heitzer, Marija Balic, Michael Gnant   +14 more
wiley   +1 more source

Circulating tumor cells in metastatic breast cancer patients treated with immune checkpoint inhibitors – a biomarker analysis of the ALICE and ICON trials

Molecular Oncology, EarlyView.
In this explorative biomarker analysis, we assessed serial sampling of circulating tumor cells (CTCs) with CellSearch in two randomized trials testing immune checkpoint inhibitors (ICIs) in metastatic breast cancer. Our data demonstrate a prognostic potential of CTCs, most apparent 4 weeks into ICI therapy.
Nikolai Kragøe Andresen, Andreas Hagen Røssevold, Elin Borgen, Cecilie Bendigtsen Schirmer, Bjørnar Gilje, Øystein Garred, Jon Lømo, Marius Stensland, Oddmund Nordgård, Ragnhild Sørum Falk, Randi R. Mathiesen, Hege G. Russnes, Jon Amund Kyte, Bjørn Naume   +13 more
wiley   +1 more source

A PCA-SVM Regression Model for LEO Space Debris Orbit Prediction in an Optical Space-Based Space Surveillance Network

IEEE Access
The primary objective of this study is to investigate the efficacy of Support Vector Machine (SVM) regression method to enhance the accuracy of Low Earth Orbit (LEO) space debris orbit prediction using the historical data.
Sara Hamidian, Amir Reza Kosari
doaj   +1 more source

GNSS orbit prediction with enhanced force model [PDF]

2015 International Conference on Location and GNSS (ICL-GNSS), 2015
Orbit prediction algorithms can be used in a portable positioning device to reduce the Time to First Fix and to augment the received broadcast ephemeris. In this work, we study the two-week prediction accuracy improvement that can be obtained when adding some smaller forces to our previously developed algorithm.
Pukkila, Andrei, Ala-Luhtala, Juha, Piche, Robert, Ali-Löytty, Simo   +3 more
openaire   +2 more sources

Circulating tumor cells: advancing personalized therapy in small cell lung cancer patients

Molecular Oncology, EarlyView.
Small cell lung cancer (SCLC) is an aggressive form of lung cancer that spreads rapidly to secondary sites such as the brain and liver. Cancer cells circulating in the blood, “circulating tumor cells” (CTCs), have demonstrated prognostic value in SCLC, and evaluating biomarkers on CTCs could guide treatment decisions such as for PARP inhibitors ...
Prajwol Shrestha, Steven Kao, Veronica K. Cheung, Wendy A. Cooper, Nico van Zandwijk, John E. J. Rasko, Dannel Yeo   +6 more
wiley   +1 more source

Proposed Orbital Products for Positioning Using Mega-Constellation LEO Satellites

Sensors, 2020
With thousands of low Earth orbit (LEO) satellites to be launched in the near future, LEO mega-constellations are supposed to significantly change the positioning and navigation service for ground users.
Kan Wang, Ahmed El-Mowafy
doaj   +1 more source

A Study on GPS Satellite Orbit Prediction

Journal of the Institute of Positioning, Navigation and Timing of Japan, 2011
本研究では受信機が測位に必要な時間TTFF (Time To First Fix） を短縮するために，新しい航法メッセージを受信せずに，過去の航法メッセージを初期値として使う衛星位置予測法を提案する．測位衛星の位置予測結果に対して，精密暦で求められた衛星位置を用いて予測精度を評価した上で，最適な摂動モデルを決定する．実験により，全衛星に対して，地球ポテンシャルモデルをJGM-3モデルで次数が8次，太陽輻射圧のモデルがGSPMモデルでのシミュレーション結果から，72時間以内の衛星軌道予測によるユーザー視線方向のレンジ誤差が約90m以内になっていることが確認され，提案した予測法の有効性が示された．
Akio Yasuda, Kimihiko Ueno, Tomoji Takasu, Chunming Fan, Cen Xiao   +4 more
openaire   +3 more sources

Cellular liquid biopsy provides unique chances for disease monitoring, preclinical model generation and therapy adjustment in rare salivary gland cancer patients

Molecular Oncology, EarlyView.
We quantified and cultured circulating tumor cells (CTCs) of 62 patients with various cancer types and generated CTC‐derived tumoroid models from two salivary gland cancer patients. Cellular liquid biopsy‐derived information enabled molecular genetic assessment of systemic disease heterogeneity and functional testing for therapy selection in both ...
Nataša Stojanović Gužvić, Florian Lüke, Steffi Treitschke, Andrea Coluccio, Martin Hoffmann, Giancarlo Feliciello, Adithi Ravikumar Varadarajan, Xin Lu, Kathrin Weidele, Catherine Botteron, Silvia Materna–Reichelt, Felix Keil, Katja Evert, Florian Weber, Thomas Schamberger, Michael Althammer, Jirka Grosse, Dirk Hellwig, Christian Schulz, Stephan Seitz, Peter Ugocsai, Anke Schlenska‐Lange, Roman Mayr, Ulrich Kaiser, Wolfgang Dietmaier, Bernhard Polzer, Jens Warfsmann, Kamran Honarnejad, Tobias Pukrop, Daniel Heudobler, Christoph A. Klein, Christian Werno   +31 more
wiley   +1 more source