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Peeking Through the Cloud: DNS-Based Estimation and Its Applications [chapter]

Moheeb Abu Rajab, Fabian Monrose, Andreas Terzis, Niels Provos
Applied Cryptography and Network Security  
We demonstrate the flexibility of our approach through two important security applications.  ...  In this paper, we propose a new estimation technique that uses DNS cache probing to infer the density of clients accessing a given service.  ...  We also extend our gratitude to the reviewers for their insightful comments and feedback.  ... 
doi:10.1007/978-3-540-68914-0_2 dblp:conf/acns/RajabMTP08 fatcat:m32vm3sw4zhz3igzpvfagbr5mi

Search for dark matter in compact hydrogen clouds

N. Mirabal
2013 Monthly Notices of the Royal Astronomical Society Letters  
The recently published GALFA-HI Compact Cloud Catalogue lists 20 neutral hydrogen clouds that might pinpoint previously undiscovered high-latitude dwarf galaxies.  ...  We use 4.3 years of Fermi observations to derive gamma-ray flux upper limits in the 1-300 GeV energy range for the sample.  ...  Without mass and distance constraints, it will be difficult to place compact clouds in the context of other measurements.  ... 
doi:10.1093/mnrasl/slt042 fatcat:m262btkqdjh35h5e7t6gypfyri

High Performance Energy-Aware Cloud Computing: A Scope of Future Computing

of applications, and hybrid techniques.  ...  This publication discusses high-performance energyaware cloud (HPEAC) computing state-of-the-art strategies to acknowledgement and categorization of systems and devices, optimization methodologies, and  ...  based applications.  ... 
doi:10.35940/ijitee.e3029.049620 fatcat:6a2prilpyjgztl3sxdgeql5k24

Accretion-driven turbulence as universal process: galaxies, molecular clouds, and protostellar disks

R. S. Klessen, P. Hennebelle
2010 Astronomy and Astrophysics  
It is the very process of cloud formation that excites turbulent motions on small scales by establishing the turbulent cascade.  ...  We propose that this accretion is able to drive internal turbulent motions in a wide range of astrophysical objects and study this process in the case of galaxies, molecular clouds and protoplanetary disks  ...  R.S.K. acknowledges financial support from the German Bundesministerium für Bildung und Forschung via the ASTRONET project STAR FORMAT (grant 05A09VHA) and from the Deutsche Forschungsgemeinschaft (DFG  ... 
doi:10.1051/0004-6361/200913780 fatcat:7av46ihr6ncc7i35eaoanfkpsm

Virtual network diagnosis as a service

Wenfei Wu, Guohui Wang, Aditya Akella, Anees Shaikh
2013 Proceedings of the 4th annual Symposium on Cloud Computing - SOCC '13  
It reduces the data collection and processing overhead by performing local flow capture and on-demand query execution.  ...  Our experiments validate VND's functionality and shows its feasibility in terms of quick service response and acceptable overhead; our simulation proves the VND architecture scales to the size of a real  ...  To determine RTT, we need to find a packet and its ACK, then use the difference of their timestamps to estimate the RTT.  ... 
doi:10.1145/2523616.2523621 dblp:conf/cloud/WuWAS13 fatcat:s53lzyfp7raabfr7n3ppbsa2i4

Autonomous discovery of optically active chiral inorganic perovskite nanocrystals through an intelligent cloud lab

Jiagen Li, Junzi Li, Rulin Liu, Yuxiao Tu, Yiwen Li, Jiaji Cheng, Tingchao He, Xi Zhu
2020 Nature Communications  
Through the remote collaboration of researchers, optically active inorganic perovskite nanocrystals (IPNCs) were first synthesized with temperature-dependent circular dichroism (CD) and inversion control  ...  This self-driving cloud lab enables efficient and reliable collaborations across the world, reduces the setup costs of in-house facilities, combines offline theoretic analysis, and is practical for accelerating  ...  The injection cross-junction and the syringes carrying the precursor solutions were connected through PTFE tubing (ID 1/32″, OD 1/16″) using PEEK finger-tight fittings.  ... 
doi:10.1038/s41467-020-15728-5 pmid:32341340 fatcat:w5pthmaflfc5re2cc2cgwrhkli

Detailed maps of interstellar clouds in front of ω Centauri: small-scale structures in the Galactic disc-halo interface

Jacco Th. van Loon, Keith T. Smith, Iain McDonald, Peter J. Sarre, Stephen J. Fossey, Robert G. Sharp
2009 Monthly notices of the Royal Astronomical Society  
Its redshifted, metal-poor and hot horizontal branch stars probe the medium-strong Ca II K and Na I D2 line absorption, and weak absorption in the lambda5780 and lambda5797 Diffuse Interstellar Bands (  ...  This region corresponds to a sigma-type cloud.  ...  We are grateful for a service time award for AAOmega on the AAT. We would also like to thank the referee, Ian Crawford, for his constructive and valuable remarks. KTS thanks EPSRC for a studentship.  ... 
doi:10.1111/j.1365-2966.2009.15131.x fatcat:pkc4ijkigrfyhegavipeuaszo4

Milky Way Satellite Census – II. Galaxy-Halo Connection Constraints Including the Impact of the Large Magellanic Cloud [article]

E. O. Nadler, R. H. Wechsler, K. Bechtol, Y. -Y. Mao, G. Green, A. Drlica-Wagner, M. McNanna, S. Mau, A. B. Pace, J. D. Simon, A. Kravtsov, S. Dodelson (+53 others)
2019 arXiv   pre-print
Based on our detailed full-sky modeling, we find that the faintest observed satellites inhabit halos with peak virial masses below 2.2× 10^8 M_ at 95% confidence, and we place the first robust constraints  ...  The population of Milky Way (MW) satellites contains the faintest known galaxies, and thus provides essential insight into galaxy formation and dark matter microphysics.  ...  Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle  ... 
arXiv:1912.03303v1 fatcat:fzku3h5s6ve5fgsont3vqtj5o4

Detecting Malicious Activity with DNS Backscatter

Kensuke Fukuda, John Heidemann
2015 Proceedings of the 2015 ACM Conference on Internet Measurement Conference - IMC '15  
Queries are visible to the authoritative DNS servers that handle reverse DNS.  ...  Backscatter is the reverse DNS queries caused when targets or middleboxes automatically look up the domain name of the originator.  ...  Acknowledgments: We thank Yuri Pradkin for B-Root data collection, Akira Kato for M-Root data, and Yoshiro Yoneya and Takeshi Mitamura for JP data.  ... 
doi:10.1145/2815675.2815706 dblp:conf/imc/FukudaH15 fatcat:72ukt6il5zfn3hn2lodr4wsd44

The Internet at the Speed of Light

Ankit Singla, Balakrishnan Chandrasekaran, P. Brighten Godfrey, Bruce Maggs
2014 Proceedings of the 13th ACM Workshop on Hot Topics in Networks - HotNets-XIII  
Bridging this large gap would not only add value to today's Internet applications, but could also open the door to exciting new applications.  ...  For many Internet services, reducing latency improves the user experience and increases revenue for the service provider.  ...  And the 'instant response' threshold will differ for audio vs. visual applications. 3 Because it is a sphere, not a plane. 4 Throughout, we use population estimates for 2010 [15] .  ... 
doi:10.1145/2670518.2673876 dblp:conf/hotnets/SinglaCGM14 fatcat:xm55bhgogjglrhoktvwnkmoj7q

N(H I)/E(B–V)

Harvey Liszt
2013 Astrophysical Journal  
N(H) = 5.8× 10^21 based on stellar reddening and uv absorption toward early-type stars.  ...  We consider measurements at galactic latitude |b| 20 and 0.1 mag where the interstellar gas is predominantly neutral and atomic and opacity corrections to 21cm H I profiles are small.  ...  Peek (2013) In the original discussion of Bohlin et al. (1978) it was noted that the slope of the N(H I)-E(B-V) relationship derived from contemporaneous 21cm H I measurements and galaxy counts was  ... 
doi:10.1088/0004-637x/780/1/10 fatcat:7bmq5bdhfjcm5nawdh264xnw3q

Compensation voltage (CV) peak shapes using a domed FAIMS with the inner electrode translated to various longitudinal positions

Roger Guevremont, Govindanunny Thekkadath, Christopher K. Hilton
2005 Journal of the American Society for Mass Spectrometry  
High-field asymmetric waveform ion mobility spectrometry (FAIMS) separates ions at atmospheric pressure based on the difference in the mobility of an ion in a strong electric field and in a weak electric  ...  distance between the inner electrode and the ion outlet.  ...  Acknowledgments The authors acknowledge the contribution of Thermo Electron Corporation who provided an LCQ Deca XP Max ion trap mass spectrometer for this work. The authors thank M.  ... 
doi:10.1016/j.jasms.2005.03.001 pmid:15907709 fatcat:tqlionbypjd3xh4cedkqqfydle

Scatter, Scope and Structures: What fatigue fracture testing of fiber polymer composites is all about

Andreas J Brunner
2018 IOP Conference Series: Materials Science and Engineering  
in structural applications.  ...  For structural design with FRP composites, it is not sufficient to select the material performing "best" in the fatigue fracture tests, but it is essential to have safe, reliable, but on the other hand  ...  Selina Kolokytha, and Mr Jürgen Hofmann (Empa, Center for X-ray Analytics) for the X-ray Computed Tomography and the 2D Fourier Transform analysis of the X-ray image slices of CFRP specimens after fracture  ... 
doi:10.1088/1757-899x/388/1/012003 fatcat:s5ahe7jqcvftfonctlmxyt4qne

Molecular gas distribution perpendicular to the Galactic plane [article]

Yang Su, Ji Yang, Qing-Zeng Yan, Shaobo Zhang, Hongchi Wang, Yan Sun, Zhiwei Chen, Chen Wang, Xin Zhou, Xuepeng Chen, Zhibo Jiang, Min Wang
2021 arXiv   pre-print
The cloud-cloud velocity dispersion is 4.9+-1.3 km/s and a linear variation with a slope of -0.4 km/s/kpc is obtained in the region of R_GC=2.2-6.4kpc.  ...  We use the ~370 square degrees data from the MWISP CO survey to study the vertical distribution of the molecular clouds (MCs) toward the tangent points in the region of l=[16,52]deg and |b|<5.1deg.  ...  Peek et al. 2011 Peek et al. , 2018 and MWISP CO data.  ... 
arXiv:2102.10727v2 fatcat:gtlzdcbqwfhvvjrjup7highunq

Behind the NAT- A measurement based evaluation of cellular service quality

Fabian Kaup, Foivos Michelinakis, Nicola Bui, Joerg Widmer, Katarzyna Wac, David Hausheer
2015 2015 11th International Conference on Network and Service Management (CNSM)  
Given the collected data a model predicting the PoP assignment and its resulting RTT leveraging Markov Chain and machine learning approaches is developed.  ...  Specifically, it is observed that the association of mobile devices to a Point of Presence (PoP) within the operator's network can influence the end-to-end RTT by a large extent.  ...  Research Center (CRC) 1053 -MAKI, by the Madrid Regional Government through the TIGRE5-CM program (S2013/ICE-2919), the Ramon y Cajal grant from the Spanish Ministry of Economy and Competitiveness RYC  ... 
doi:10.1109/cnsm.2015.7367363 dblp:conf/cnsm/KaupMBWWH15 fatcat:g3hnnmhikff4feaqmvd7kp66pi
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