title string | abstract string | url string | arxiv_id string | date string | category string |
|---|---|---|---|---|---|
21 Million Opportunities: A 19 Facility Investigation of Factors Affecting Hand Hygiene Compliance via Linear Predictive Models | This large-scale study, consisting of 21.3 million hand hygiene opportunities
from 19 distinct facilities in 10 different states, uses linear predictive
models to expose factors that may affect hand hygiene compliance. We examine
the use of features such as temperature, relative humidity, influenza severity,
day/night ... | http://arxiv.org/abs/1801.09546v1 | 1801.09546 | 2018-01-26 | cybersecurity |
21 new long-term variables in the GX 339-4 field: two years of MeerKAT monitoring | We present 21 new long-term variable radio sources found commensally in two years of weekly MeerKAT monitoring of the low-mass X-ray binary GX 339-4. The new sources vary on time scales of weeks to months and have a variety of light curve shapes and spectral index properties. Three of the new variable sources are coinc... | https://arxiv.org/abs/2203.09806v1 | 2203.09806 | 2022-03-18 | cybersecurity |
(2+1) Regge Calculus: Discrete Curvatures, Bianchi Identity, and Gauss-Codazzi Equation | The first results presented in our article are the clear definitions of both
intrinsic and extrinsic discrete curvatures in terms of holonomy and
plane-angle representation, a clear relation with their deficit angles, and
their clear geometrical interpretations in the first order discrete geometry.
The second results a... | http://arxiv.org/abs/1709.08373v1 | 1709.08373 | 2017-09-25 | cybersecurity |
21st century change in ocean response to climate forcing | Modeling globally averaged information on climate forcing from the land
surface temperature data, the sea surface temperatures (SST) and the
empirically determined relationship between the changes in SST and the
turbulent diffusion of heat into the upper ocean demonstrates a consistent
link. The modeling is accurate th... | http://arxiv.org/abs/1507.04809v1 | 1507.04809 | 2015-07-17 | cybersecurity |
21st Century Computer Architecture | Because most technology and computer architecture innovations were
(intentionally) invisible to higher layers, application and other software
developers could reap the benefits of this progress without engaging in it.
Higher performance has both made more computationally demanding applications
feasible (e.g., virtual a... | http://arxiv.org/abs/1609.06756v1 | 1609.06756 | 2016-09-21 | cybersecurity |
21st Century Global and Regional Surface Temperature Projections | Many regions across the globe broke their surface temperature records in recent years, further sparking concerns about the impending arrival of "tipping points" later in the 21st century. This study analyzes observed global surface temperature trends in three target latitudinal regions: the Arctic Circle, the Tropics, ... | https://arxiv.org/abs/2210.03245v2 | 2210.03245 | 2022-10-06 | cybersecurity |
21st Century Planar Field Emission Theory and its Role in Vacuum Breakdown Science | For explaining electrical breakdown, field electron emission (FE) is a mechanism of interest. In the period 2006 to 2010 there were significant developments in basic FE theory, but these have not yet fully entered general thinking in technological FE areas, which are often still based on 1960s thinking or (in some cont... | https://arxiv.org/abs/2107.08801v2 | 2107.08801 | 2021-07-19 | cybersecurity |
21st Century Statistical and Computational Challenges in Astrophysics | Modern astronomy has been rapidly increasing our ability to see deeper into
the universe, acquiring enormous samples of cosmic populations. Gaining
astrophysical insights from these datasets requires a wide range of
sophisticated statistical and machine learning methods. Long-standing problems
in cosmology include char... | http://arxiv.org/abs/2005.13025v1 | 2005.13025 | 2020-05-26 | cybersecurity |
$21^{st}$ Century Statistical Disclosure Limitation: Motivations and Challenges | This chapter examines the motivations and imperatives for modernizing how statistical agencies approach statistical disclosure limitation for official data product releases. It discusses the implications for agencies' broader data governance and decision-making, and it identifies challenges that agencies will likely fa... | https://arxiv.org/abs/2303.00845v1 | 2303.00845 | 2023-03-01 | cybersecurity |
21 years of Astronomy at Warwick: celebrating the legacy of Prof. Tom Marsh | Between the 4th and 6th of September 2024, the Astronomy & Astrophysics group at the University of Warwick held a meeting to celebrate 21 years of astronomy at Warwick and the scientific legacy of the late Prof. Tom Marsh, the group founder. More than a hundred people attended the meeting, with about half of the attend... | https://arxiv.org/abs/2504.20954v1 | 2504.20954 | 2025-04-29 | cybersecurity |
21-year timing of the black-widow pulsar J2051-0827 | Timing results for the black-widow pulsar J2051-0827 are presented, using a
21-year dataset from four European Pulsar Timing Array telescopes and the
Parkes radio telescope. This dataset, which is the longest published to date
for a black-widow system, allows for an improved analysis that addresses
previously unknown b... | http://arxiv.org/abs/1607.04167v1 | 1607.04167 | 2016-07-14 | cybersecurity |
220 GHz RIS-Aided Multi-user Terahertz Communication System: Prototype Design and Over-the-Air Experimental Trials | Terahertz (THz) communication technology is regarded as a promising enabler for achieving ultra-high data rate transmission in next-generation communication systems. To mitigate the high path loss in THz systems, the transmitting beams are typically narrow and highly directional, which makes it difficult for a single b... | https://arxiv.org/abs/2502.16970v1 | 2502.16970 | 2025-02-24 | cybersecurity |
220 GHz Urban Microcell Channel Measurement and Characterization on a University Campus | Owning abundant bandwidth resources, the Terahertz (THz) band (0.1-10~THz) is envisioned as a key technology to realize ultra-high-speed communications in 6G and beyond wireless networks. To realize reliable THz communications in urban microcell (UMi) environments, propagation analysis and channel characterization are ... | https://arxiv.org/abs/2408.15772v1 | 2408.15772 | 2024-08-28 | cybersecurity |
$^{222}$Rn contamination mechanisms on acrylic surfaces | In this work, the $^{222}$Rn contamination mechanisms on acrylic surfaces
have been investigated. $^{222}$Rn can represent a significant background
source for low-background experiments, and acrylic is a suitable material for
detector design thanks to its purity and transparency. Four acrylic samples
have been exposed ... | http://arxiv.org/abs/1911.04836v1 | 1911.04836 | 2019-11-12 | cybersecurity |
$^{222}$Rn content variations at ground and underground conditions | The activity of $^{222}$Rn and its daughter isotopes was measured in the air of several underground laboratories of the Baksan Neutrino Observatory at various distances from the entrance. The measurements were carried out with the help of the cylindrical ionionization air chamber. We found that the radon content in the... | https://arxiv.org/abs/2110.15289v2 | 2110.15289 | 2021-10-28 | cybersecurity |
$^{222}$Rn emanation measurements for the XENON1T experiment | The selection of low-radioactive construction materials is of utmost
importance for the success of low-energy rare event search experiments. Besides
radioactive contaminants in the bulk, the emanation of radioactive radon atoms
from material surfaces attains increasing relevance in the effort to further
reduce the back... | http://arxiv.org/abs/2009.13981v2 | 2009.13981 | 2020-09-30 | cybersecurity |
$^{229}\mathrm{ThF}_4$ thin films for solid-state nuclear clocks | After nearly fifty years of searching, the vacuum ultraviolet $^{229}$Th nuclear isomeric transition has recently been directly laser excited [1,2] and measured with high spectroscopic precision [3]. Nuclear clocks based on this transition are expected to be more robust [4,5] than and may outperform [6,7] current optic... | https://arxiv.org/abs/2410.01753v1 | 2410.01753 | 2024-10-02 | cybersecurity |
229 nm UV LEDs using p-type silicon for increased hole injection | Ultraviolet (UV) light emission at 229 nm wavelength from diode structures
based on AlN/Al0.77Ga0.23N quantum wells and using p-type Si to significantly
increase hole injection was reported. Both electrical and optical
characteristics were measured. Owing to the large concentration of holes from
p-Si and efficient hole... | http://arxiv.org/abs/1708.03973v1 | 1708.03973 | 2017-08-13 | cybersecurity |
229Th-doped nonlinear optical crystals for compact solid-state clocks | The recent laser excitation of the 229Th isomeric transition in a solid-state host opens the door for a portable solid-state nuclear optical clock. However, at present the vacuum-ultraviolet laser systems required for clock operation are not conducive to a fieldable form factor. Here, we propose a possible solution to ... | https://arxiv.org/abs/2410.23364v1 | 2410.23364 | 2024-10-30 | cybersecurity |
(2,2) and (0,4) Supersymmetric Boundary Conditions in 3d N = 4 Theories and Type IIB Branes | The half-BPS boundary conditions preserving $\mathcal{N}=(2,2)$ and
$\mathcal{N}=(0,4)$ supersymmetry in 3d $\mathcal{N}=4$ supersymmetric gauge
theories are examined. The BPS equations admit decomposition of the bulk
supermultiplets into specific boundary supermultiplets of preserved
supersymmetry. Nahm-like equations... | http://arxiv.org/abs/1608.05363v4 | 1608.05363 | 2017-11-30 | cybersecurity |
2+2D Texture for Full Positive Parallax Effect | The representation of parallax on virtual environment is still a problem to be studied. Common algorithms, such as Bump Mapping, Parallax Mapping and Displacement Mapping, treats this problem for small disparity between a real object and a simplified model. This work will introduce a new texture structure and one possi... | https://arxiv.org/abs/2402.16815v1 | 2402.16815 | 2024-02-26 | cybersecurity |
22 Examples of Solution Compression via Derandomization | We provide bounds on the compression size of the solutions to 22 problems in computer science. For each problem, we show that solutions exist with high probability, for some simple probability measure. Once this is proven, derandomization can be used to prove the existence of a simple solution. | https://arxiv.org/abs/2208.11562v4 | 2208.11562 | 2022-08-24 | cybersecurity |
(2,2) Geometry from Gauge Theory | Using gauge theory, we describe how to construct generalized Kahler
geometries with (2,2) two-dimensional supersymmetry, which are analogues of
familiar examples like projective spaces and Calabi-Yau manifolds. For special
cases, T-dual descriptions can be found which are squashed Kahler spaces. We
explore the vacuum s... | http://arxiv.org/abs/1810.01388v2 | 1810.01388 | 2018-10-16 | cybersecurity |
2-2-holes simplified | Quadratic gravity illustrates how a replacement for black holes can emerge from a UV completion of gravity. 2-2-holes are extremely compact horizonless objects with an entropy $S_{22}$ due to trapped normal matter, and in this way they are conceptually easy to understand. But the field equations are cumbersome and the ... | https://arxiv.org/abs/2202.08442v2 | 2202.08442 | 2022-02-17 | cybersecurity |
$^{22}$Na Activation Level Measurements of Fused Silica Rods in the LHC Target Absorber for Neutrals (TAN) Compared to FLUKA Simulations | The Target Absorbers for Neutrals (TANs) are located in a high-intensity radiation environment inside the tunnel of the Large Hadron Collider (LHC). TANs are positioned about $140$ m downstream from the beam interaction points. Seven $40$ cm long fused silica rods with different dopant specifications were irradiated in... | https://arxiv.org/abs/2204.01937v2 | 2204.01937 | 2022-04-05 | cybersecurity |
$^{22}$Ne and $^{23}$Na ejecta from intermediate-mass stars: The impact of the new LUNA rate for $^{22}$Ne(p,$\gamma$)$^{23}$Na | We investigate the impact of the new LUNA rate for the nuclear reaction
$^{22}$Ne$(p,\gamma)^{23}$Na on the chemical ejecta of intermediate-mass stars,
with particular focus on the thermally-pulsing asymptotic giant branch (TP-AGB)
stars that experience hot-bottom burning. To this aim we use the PARSEC and
COLIBRI code... | http://arxiv.org/abs/1611.07742v1 | 1611.07742 | 2016-11-23 | cybersecurity |
$^{22}$Ne Phase Separation As A Solution To The Ultramassive White Dwarf Cooling Anomaly | The precise astrometric measurements of the Gaia Data Release 2 have opened the door to detailed tests of the predictions of white dwarf cooling models. Significant discrepancies between theory and observations have been identified, the most striking affecting ultramassive white dwarfs. Cheng et al. (2019) found that a... | https://arxiv.org/abs/2103.12892v1 | 2103.12892 | 2021-03-23 | cybersecurity |
$(2,2p+1)$ minimal string and intersection theory I | In view of recent progress in studying matrix model-2D gravity duality, we reexamine some features of $(2,2p+1)$ minimal string. After reviewing both sides of the proposed correspondence in this case, a previously unnoted identification between correlation numbers of tachyon operators in certain domain of parameter spa... | https://arxiv.org/abs/2403.02305v4 | 2403.02305 | 2024-03-04 | cybersecurity |
$(2,2)$ Scattering and the Celestial Torus | Analytic continuation from Minkowski space to $(2,2)$ split signature spacetime has proven to be a powerful tool for the study of scattering amplitudes. Here we show that, under this continuation, null infinity becomes the product of a null interval with a celestial torus (replacing the celestial sphere) and has only o... | https://arxiv.org/abs/2101.09591v1 | 2101.09591 | 2021-01-23 | cybersecurity |
(2,2) Superconformal Bootstrap in Two Dimensions | We find a simple relation between two-dimensional BPS N=2 superconformal
blocks and bosonic Virasoro conformal blocks, which allows us to analyze the
crossing equations for BPS 4-point functions in unitary (2,2) superconformal
theories numerically with semidefinite programming. We constrain gaps in the
non-BPS spectrum... | http://arxiv.org/abs/1610.05371v1 | 1610.05371 | 2016-10-17 | cybersecurity |
22 Year Solar Magnetic Cycle and its relation to Convection Zone Dynamics | Using continuous observations for 22 years from ground-based network GONG and
space-borne instruments MDI onboard {\it SoHO} and HMI onboard {\it SDO}, we
report both global and local properties of the convection zone and their
variations with time. | http://arxiv.org/abs/1805.05371v1 | 1805.05371 | 2018-05-14 | cybersecurity |
230,439 Test Failures Later: An Empirical Evaluation of Flaky Failure Classifiers | Flaky tests are tests that can non-deterministically pass or fail, even in the absence of code changes.Despite being a source of false alarms, flaky tests often remain in test suites once they are detected, as they also may be relied upon to detect true failures. Hence, a key open problem in flaky test research is: How... | https://arxiv.org/abs/2401.15788v1 | 2401.15788 | 2024-01-28 | cybersecurity |
230 GHz VLBI observations of M87: event-horizon-scale structure at the enhanced very-high-energy $\rm \gamma$-ray state in 2012 | We report on 230 GHz (1.3 mm) VLBI observations of M87 with the Event Horizon
Telescope using antennas on Mauna Kea in Hawaii, Mt. Graham in Arizona and
Cedar Flat in California. For the first time, we have acquired 230 GHz VLBI
interferometric phase information on M87 through measurement of closure phase
on the triang... | http://arxiv.org/abs/1505.03545v3 | 1505.03545 | 2015-06-19 | cybersecurity |
23, 381, 6242, 103268, 1743183, ...: Hilbert series for CP-violating operators in SMEFT | We introduce a systematic method to classify the Standard Model Effective Field Theory (SMEFT) operators based on their CP properties with the Hilbert series techniques. Our method makes it possible to enumerate operators violating CP symmetry in a few seconds. We present the complete classification of dimension eight ... | https://arxiv.org/abs/2212.02413v3 | 2212.02413 | 2022-12-05 | cybersecurity |
23.8-GHz Acoustic Filter in Periodically Poled Piezoelectric Film Lithium Niobate With 1.52-dB IL and 19.4% FBW | This paper reports the first piezoelectric acoustic filter in periodically poled piezoelectric film (P3F) lithium niobate (LiNbO3) at 23.8 GHz with low insertion loss (IL) of 1.52 dB and 3-dB fractional bandwidth (FBW) of 19.4%. The filter features a compact footprint of 0.64 mm2. The third-order ladder filter is imple... | https://arxiv.org/abs/2402.12194v2 | 2402.12194 | 2024-02-19 | cybersecurity |
${}^{239}$Pu nuclear magnetic resonance in the candidate topological insulator PuB$_4$ | We present a detailed nuclear magnetic resonance (NMR) study of ${}^{239}$Pu
in bulk and powdered single-crystal plutonium tetraboride (PuB$_4$), which has
recently been investigated as a potential correlated topological insulator.
This study constitutes the second-ever observation of the ${}^{239}$Pu NMR
signal, and p... | http://arxiv.org/abs/1812.09202v1 | 1812.09202 | 2018-12-21 | cybersecurity |
2-, 3- and 4-Body Decays in the Constructive Standard Model | We further develop the massive constructive theory of the Standard Model and
use it to calculate the amplitude and squared amplitude for all two-body
decays, a collection of weak three-body decays, as well as Higgs decay to four
neutrinos. We compare our results with those from Feynman diagrams and find
complete agreem... | http://arxiv.org/abs/1909.09164v2 | 1909.09164 | 2020-03-30 | cybersecurity |
"23andMe confirms: I'm super white" -- Analyzing Twitter Discourse On Genetic Testing | Recent progress in genomics is bringing genetic testing to the masses.
Participatory public initiatives are underway to sequence the genome of
millions of volunteers, and a new market is booming with a number of companies
like 23andMe and AncestryDNA offering affordable tests directly to consumers.
Consequently, news, ... | http://arxiv.org/abs/1801.09946v2 | 1801.09946 | 2018-04-20 | cybersecurity |
23-bit Metaknowledge Template Towards Big Data Knowledge Discovery and Management | The global influence of Big Data is not only growing but seemingly endless.
The trend is leaning towards knowledge that is attained easily and quickly from
massive pools of Big Data. Today we are living in the technological world that
Dr. Usama Fayyad and his distinguished research fellows discussed in the
introductory... | http://arxiv.org/abs/1503.00244v1 | 1503.00244 | 2015-03-01 | cybersecurity |
(2,3)-Cordial Oriented Hypercubes | In this article we investigate the existence of (2,3)-cordial labelings of oriented hypercubes. In this investigation, we determine that there exists a (2,3)-cordial oriented hypercube for any dimension divisible by 3. Next, we provide examples of (2,3)-cordial oriented hypercubes of dimension not divisible by 3 and st... | https://arxiv.org/abs/2012.11091v3 | 2012.11091 | 2020-12-21 | cybersecurity |
(2,3) Cordial Trees and Paths | Recently L. B. Beasley introduced $(2,3)$-cordial labelings of directed graphs in [1]. He made two conjectures which we resolve in this article. He conjectured that every orientation of a path of length at least five is $(2,3)$ cordial, and that every tree of max degree $n =3$ has a cordial orientation. We show these t... | https://arxiv.org/abs/2012.10591v2 | 2012.10591 | 2020-12-19 | cybersecurity |
23 DoF Grasping Policies from a Raw Point Cloud | Coordinating the motion of robots with high degrees of freedom (DoF) to grasp objects gives rise to many challenges. In this paper, we propose a novel imitation learning approach to learn a policy that directly predicts 23 DoF grasp trajectories from a partial point cloud provided by a single, fixed camera. At the core... | https://arxiv.org/abs/2411.14400v1 | 2411.14400 | 2024-11-21 | cybersecurity |
23Na and 1H NMR Relaxometry of Shale at High Magnetic Field | Formation evaluation of unconventional reservoirs is challenging due to the
coexistence of different phases such as kerogen, bitumen, movable and bound
light hydrocarbon and water. Current low-frequency (0.05 T) nuclear magnetic
resonance (NMR) laboratory and logging methods are incapable of quantitatively
separating t... | http://arxiv.org/abs/1604.07731v1 | 1604.07731 | 2016-04-26 | cybersecurity |
{23}Na nuclear spin-lattice relaxation studies of Na2Ni2TeO6 | We report on {23}Na NMR studies of a honeycomb lattice antiferromagnet
Na2Ni2TeO6 by {23}Na nuclear spin-echo techniques. The {23}Na nuclear
spin-lattice relaxation rate 1/{23}T_1 exhibits critical divergence near a Neel
temperature T_N = 26 K, a narrow critical region, and a critical exponent w =
0.34 in 1/{23}T_1 = a... | http://arxiv.org/abs/1504.03003v1 | 1504.03003 | 2015-04-12 | cybersecurity |
$^{23}$Ne Production at SARAF-I | In this article, we present a measurement of flow rate, yield and effusion
time of a $^{23}$Ne production and transport system. We used an
accelerator-driven Li(d,n) neutron source to produce neutrons up to 20 MeV. The
radioactive atoms were produced by a $^{23}$Na(n,p) reaction at a NaCl target.
Later, the atoms were ... | http://arxiv.org/abs/2006.00478v1 | 2006.00478 | 2020-05-31 | cybersecurity |
2413-balloon permutations and the growth of the M\"obius function | We show that the growth of the principal M\"obius function on the permutation
poset is exponential. This improves on previous work, which has shown that the
growth is at least polynomial. We define a method of constructing a permutation
from a smaller permutation which we call "ballooning". We show that if $\beta$
is a... | http://arxiv.org/abs/1812.05064v3 | 1812.05064 | 2019-12-12 | cybersecurity |
$^{242m}$Am isomer yield in $^{243}$Am$(n, 2n)$ reaction | The reaction 243 Am (n, 2n) populates the T of 16 hours ground state 242 g Am with J of 1 or the 242 m Am isomer state J of 5 with T of 141 years. The former state 242 g Am mostly beta decays to 242 Cm, or transmutes to 242 Pu via electron capture. The absolute yield of 242 g Am is compatible with the measured data, es... | https://arxiv.org/abs/2406.15445v1 | 2406.15445 | 2024-05-30 | cybersecurity |
24/7 Place Recognition by View Synthesis | We address the problem of large-scale visual place recognition for situations where the scene undergoes a major change in appearance, for example, due to illumination (day/night), change of seasons, aging, or structural modifications over time such as buildings built or destroyed. Such situations represent a major chal... | http://openaccess.thecvf.com/content_cvpr_2015/html/Torii_247_Place_Recognition_2015_CVPR_paper.html | null | 2015-06-01 | cybersecurity |
$(2,4)$-Colorability of Planar Graphs Excluding $3$-, $4$-, and $6$-Cycles | A defective $k$-coloring is a coloring on the vertices of a graph using colors $1,2, \dots, k$ such that adjacent vertices may share the same color. A $(d_1,d_2)$-\emph{coloring} of a graph $G$ is a defective $2$-coloring of $G$ such that any vertex colored by color $i$ has at most $d_i$ adjacent vertices of the same c... | https://arxiv.org/abs/2501.07129v1 | 2501.07129 | 2025-01-13 | cybersecurity |
24 days-stable CNOT-gate on fluxonium qubits with over 99.9% fidelity | Fluxonium qubit is a promising building block for quantum information processing due to its long coherence time and strong anharmonicity. In this paper, we realize a 60 ns direct CNOT-gate on two inductively-coupled fluxonium qubits using selective darkening approach, resulting in a gate fidelity as high as 99.94%. The... | https://arxiv.org/abs/2407.15783v2 | 2407.15783 | 2024-07-22 | cybersecurity |
24-hour measurement of squeezed light using automated stable fiber system | In order to provide a cloud service of optical quantum computing, it is inevitable to stabilize the optical system for many hours. It is advantageous to construct a fiber-based system, which does not require spatial alignment. However, fiber-based systems are instead subject to fiber-specific instabilities. For instanc... | https://arxiv.org/abs/2401.17533v1 | 2401.17533 | 2024-01-31 | cybersecurity |
24-Hour Relativistic Bit Commitment | Bit commitment is a fundamental cryptographic primitive in which a party
wishes to commit a secret bit to another party. Perfect security between
mistrustful parties is unfortunately impossible to achieve through the
asynchronous exchange of classical and quantum messages. Perfect security can
nonetheless be achieved i... | http://arxiv.org/abs/1605.07442v1 | 1605.07442 | 2016-05-24 | cybersecurity |
$^{24}$Mg($p$, $\alpha$)$^{21}$Na reaction study for spectroscopy of $^{21}$Na | The $^{24}$Mg($p$, $\alpha$)$^{21}$Na reaction was measured at the Holifield
Radioactive Ion Beam Facility at Oak Ridge National Laboratory in order to
better constrain spins and parities of energy levels in $^{21}$Na for the
astrophysically important $^{17}$F($\alpha, p$)$^{20}$Ne reaction rate
calculation. 31 MeV pro... | http://arxiv.org/abs/1508.02128v1 | 1508.02128 | 2015-08-10 | cybersecurity |
24 rational curves on K3 surfaces | Given d in IN, we prove that all smooth K3 surfaces (over any field of characteristic p other than 2,3) of degree greater than 84d^2 contain at most 24 rational curves of degree at most d. In the exceptional characteristics, the same bounds hold for non-unirational K3 surfaces, and we develop analogous results in the u... | https://arxiv.org/abs/1907.04182v3 | 1907.04182 | 2019-07-09 | cybersecurity |
24 synoptic maps of average magnetic field in 296 prominences measured by the Hanle effect during the ascending phase of solar cycle 21 | Aims : We present 24 synoptic maps of solar filaments, in which the average unambiguous magnetic field vectors of 296 prominences were determined with Pic-du-Midi observations between 1974 and 1982. This was the ascending phase of cycle 21. Methods : The magnetic field was determined by interpreting the Hanle effect, w... | https://arxiv.org/abs/2007.08219v4 | 2007.08219 | 2020-07-16 | cybersecurity |
2.4-THz Bandwidth Optical Coherent Receiver Based on a Photonic Crystal Microcomb | We demonstrate a spectrally-sliced single-polarization optical coherent receiver with a record 2.4-THz bandwidth, using a 200-GHz tantalum pentoxide photonic crystal microring resonator as the local oscillator frequency comb. | https://arxiv.org/abs/2407.04060v1 | 2407.04060 | 2024-07-04 | cybersecurity |
25,000 optical fiber positioning robots for next-generation cosmology | Massively parallel multi-object spectrographs are on the leading edge of cosmology instrumentation. The highly successful Dark Energy Spectroscopic Instrument (DESI) which begun survey operations in May 2021, for example, has 5,000 robotically-actuated multimode fibers, which deliver light from thousands of individual ... | https://arxiv.org/abs/2212.07908v1 | 2212.07908 | 2022-12-15 | cybersecurity |
2500 vibronic eigenstates of the NO$_3$ radical | The nitrate radical NO$_3$ plays an important role in atmospheric chemistry, yet many aspects of its coupled and anharmonic vibronic structure remain elusive. Here, using an accurate, coupled full-dimensional diabatic potential that includes five electronic states, we revisit the vibronic spectrum associated with the e... | https://arxiv.org/abs/2407.03398v2 | 2407.03398 | 2024-07-03 | cybersecurity |
(2.5+1)D Spatio-Temporal Scene Graphs for Video Question Answering | Spatio-temporal scene-graph approaches to video-based reasoning tasks, such as video question-answering (QA), typically construct such graphs for every video frame. These approaches often ignore the fact that videos are essentially sequences of 2D "views" of events happening in a 3D space, and that the semantics of the... | https://arxiv.org/abs/2202.09277v2 | 2202.09277 | 2022-02-18 | cybersecurity |
2.5-Connectivity: Unique Components, Critical Graphs, and Applications | If a biconnected graph stays connected after the removal of an arbitrary
vertex and an arbitrary edge, then it is called 2.5-connected. We prove that
every biconnected graph has a canonical decomposition into 2.5-connected
components. These components are arranged in a tree-structure. We also discuss
the connection bet... | http://arxiv.org/abs/2003.01498v2 | 2003.01498 | 2020-07-14 | cybersecurity |
2.5D Deep Learning for CT Image Reconstruction using a Multi-GPU implementation | While Model Based Iterative Reconstruction (MBIR) of CT scans has been shown
to have better image quality than Filtered Back Projection (FBP), its use has
been limited by its high computational cost. More recently, deep convolutional
neural networks (CNN) have shown great promise in both denoising and
reconstruction ap... | http://arxiv.org/abs/1812.08367v1 | 1812.08367 | 2018-12-20 | cybersecurity |
2.5D Image based Robotic Grasping | We consider the problem of robotic grasping using depth + RGB information
sampling from a real sensor. we design an encoder-decoder neural network to
predict grasp policy in real time. This method can fuse the advantage of depth
image and RGB image at the same time and is robust for grasp and observation
height.We eval... | http://arxiv.org/abs/1905.13675v1 | 1905.13675 | 2019-05-31 | cybersecurity |
2.5D Mapping, Pathfinding and Path Following For Navigation Of A Differential Drive Robot In Uneven Terrain | Safe navigation in uneven terrains is an important problem in robotic research. In this paper we propose a 2.5D navigation system which consists of elevation map building, path planning and local path following with obstacle avoidance. For local path following we use Model Predictive Path Integral (MPPI) control method... | https://arxiv.org/abs/2209.07252v1 | 2209.07252 | 2022-09-15 | cybersecurity |
2.5-D MHD Simulation of the Formation and Evolution of Plasmoids in Coronal Current Sheets | In the present paper, using MPI-AMRVAC, we perform a 2.5-D numerical MHD simulation of the dynamics and associated thermodynamical evolution of an initially force-free Harris current sheet subjected to an external velocity perturbation under the condition of uniform resistivity. The amplitude of the magnetic field is t... | https://arxiv.org/abs/2401.07048v1 | 2401.07048 | 2024-01-13 | cybersecurity |
2.5D Multi-view Averaging Diffusion Model for 3D Medical Image Translation: Application to Low-count PET Reconstruction with CT-less Attenuation Correction | Positron Emission Tomography (PET) is an important clinical imaging tool but inevitably introduces radiation hazards to patients and healthcare providers. Reducing the tracer injection dose and eliminating the CT acquisition for attenuation correction can reduce the overall radiation dose, but often results in PET with... | https://arxiv.org/abs/2406.08374v2 | 2406.08374 | 2024-06-12 | cybersecurity |
2.5D Root of Trust: Secure System-Level Integration of Untrusted Chiplets | Dedicated, after acceptance and publication, in memory of the late Vassos
Soteriou. For the first time, we leverage the 2.5D interposer technology to
establish system-level security in the face of hardware- and software-centric
adversaries. More specifically, we integrate chiplets (i.e., third-party hard
intellectual p... | http://arxiv.org/abs/2009.02412v2 | 2009.02412 | 2020-09-29 | cybersecurity |
2.5D Super-Resolution Approaches for X-ray Computed Tomography-based Inspection of Additively Manufactured Parts | X-ray computed tomography (XCT) is a key tool in non-destructive evaluation of additively manufactured (AM) parts, allowing for internal inspection and defect detection. Despite its widespread use, obtaining high-resolution CT scans can be extremely time consuming. This issue can be mitigated by performing scans at low... | https://arxiv.org/abs/2412.04525v1 | 2412.04525 | 2024-12-05 | cybersecurity |
2.5D Thermometry Maps for MRI-guided Tumor Ablation | Fast and reliable monitoring of volumetric heat distribution during MRI-guided tumor ablation is an urgent clinical need. In this work, we introduce a method for generating 2.5D thermometry maps from uniformly distributed 2D MRI phase images rotated around the applicator's main axis. The images can be fetched directly ... | https://arxiv.org/abs/2108.05734v1 | 2108.05734 | 2021-08-12 | cybersecurity |
2.5D turbulence in shear-thinning jets | The dimensional transition in turbulent jets of a shear-thinning fluid is studied via direct numerical simulations. Our findings reveal that under vertical confinement, the flow exhibits a unique mixed-dimensional (or 2.5D) state, where large-scale two-dimensional and small-scale three-dimensional structures coexist. T... | https://arxiv.org/abs/2407.01038v4 | 2407.01038 | 2024-07-01 | cybersecurity |
2.5D U-Net with Depth Reduction for 3D CryoET Object Identification | Cryo-electron tomography (cryoET) is a crucial technique for unveiling the structure of protein complexes. Automatically analyzing tomograms captured by cryoET is an essential step toward understanding cellular structures. In this paper, we introduce the 4th place solution from the CZII - CryoET Object Identification c... | https://arxiv.org/abs/2502.13484v1 | 2502.13484 | 2025-02-19 | cybersecurity |
2.5D Vehicle Odometry Estimation | It is well understood that in ADAS applications, a good estimate of the pose of the vehicle is required. This paper proposes a metaphorically named 2.5D odometry, whereby the planar odometry derived from the yaw rate sensor and four wheel speed sensors is augmented by a linear model of suspension. While the core of the... | https://arxiv.org/abs/2111.08398v1 | 2111.08398 | 2021-11-16 | cybersecurity |
2.5D Visual Relationship Detection | Visual 2.5D perception involves understanding the semantics and geometry of a scene through reasoning about object relationships with respect to the viewer in an environment. However, existing works in visual recognition primarily focus on the semantics. To bridge this gap, we study 2.5D visual relationship detection (... | https://arxiv.org/abs/2104.12727v1 | 2104.12727 | 2021-04-26 | cybersecurity |
2.5D Visual Sound | Binaural audio provides a listener with 3D sound sensation, allowing a rich
perceptual experience of the scene. However, binaural recordings are scarcely
available and require nontrivial expertise and equipment to obtain. We propose
to convert common monaural audio into binaural audio by leveraging video. The
key idea ... | http://arxiv.org/abs/1812.04204v4 | 1812.04204 | 2018-12-11 | cybersecurity |
25-Fold Resolution Enhancement of X-ray Microscopy Using Multipixel Ghost Imaging | Hard x-ray imaging is indispensable across diverse fields owing to its high penetrability. However, the resolution of traditional x-ray imaging modalities, such as computed tomography (CT) systems, is constrained by factors including beam properties, the absence of optical components, and detection resolution. As a res... | https://arxiv.org/abs/2402.14023v1 | 2402.14023 | 2024-02-07 | cybersecurity |
25 MeV Solar Proton Events in Cycle 24 and Previous Cycles | We summarize observations of around a thousand solar energetic particle (SEP)
events since 1967 that include ~25 MeV protons, made by various near-Earth
spacecraft (IMPs 4, 5, 7, 8, ISEE 3, SOHO), that encompass Solar Cycle 20 to
the current cycle (24). We also discuss recent observations of similar SEP
events in Cycle... | http://arxiv.org/abs/1604.07873v2 | 1604.07873 | 2016-07-29 | cybersecurity |
2.5-MHD models of circumstellar discs around FS~CMa post-mergers : II. Stationary accretion stage | We study the star-disc interaction in the presence of the strong magnetic field ($B_\star=6.2kG$) of a slowly rotating star. This situation describes a post-merger of the spectral type B and has not been previously investigated. We perform a set of resistive and viscosity $2.5D$-magnetohydrodynamical simulations using ... | https://arxiv.org/abs/2402.00720v2 | 2402.00720 | 2024-02-01 | cybersecurity |
2.5-MHD models of circumstellar discs around FS~CMa post-mergers : I. Non-stationary accretion stage | We investigate the dynamic evolution of gaseous region around FS~CMa post-mergers. Due to the slow rotation of a central B-type star, the dynamics is driven mainly by the magnetic field of the central star. Recent observations have allowed us to set a realistic initial conditions such as, the magnetic field value ($B_\... | https://arxiv.org/abs/2306.16073v1 | 2306.16073 | 2023-06-28 | cybersecurity |
25 open questions about vector bundles and their moduli | We present 25 open questions about moduli spaces of vector bundles and related topics and discuss some longstanding conjectures. We hope to inspire young researchers to engage in this area of research. | https://arxiv.org/abs/2106.06434v1 | 2106.06434 | 2021-06-11 | cybersecurity |
2.5PN accurate waveform information for generic-planar-orbit binaries in effective one-body models | We provide the post-Newtonian (PN) waveform for binary systems in motion along generic planar orbits at 2.5PN accuracy, in terms of the dynamical variables of the effective one-body (EOB) formalism. In addition to the calculation of the higher order terms for all the contributions to the waveform that have been already... | https://arxiv.org/abs/2305.14440v3 | 2305.14440 | 2023-05-23 | cybersecurity |
$^{25}$Si $\beta^+$-decay spectroscopy | $\beta$-decay spectroscopy provides valuable information on exotic nuclei and
a stringent test for nuclear theories beyond the stability line. To search for
new $\beta$-delayed protons and $\gamma$ rays of $^{25}$Si to investigate the
properties of $^{25}$Al excited states. $^{25}$Si $\beta$ decays were measured
by usi... | http://arxiv.org/abs/2009.00825v2 | 2009.00825 | 2020-09-13 | cybersecurity |
25 Tweets to Know You: A New Model to Predict Personality with Social Media | Predicting personality is essential for social applications supporting
human-centered activities, yet prior modeling methods with users written text
require too much input data to be realistically used in the context of social
media. In this work, we aim to drastically reduce the data requirement for
personality modeli... | http://arxiv.org/abs/1704.05513v1 | 1704.05513 | 2017-04-18 | cybersecurity |
2.5 Years in Class: A Multimodal Textbook for Vision-Language Pretraining | Compared to image-text pair data, interleaved corpora enable Vision-Language Models (VLMs) to understand the world more naturally like humans. However, such existing datasets are crawled from webpage, facing challenges like low knowledge density, loose image-text relations, and poor logical coherence between images. On... | https://arxiv.org/abs/2501.00958v4 | 2501.00958 | 2025-01-01 | cybersecurity |
25 years of CNNs: Can we compare to human abstraction capabilities? | We try to determine the progress made by convolutional neural networks over
the past 25 years in classifying images into abstractc lasses. For this purpose
we compare the performance of LeNet to that of GoogLeNet at classifying
randomly generated images which are differentiated by an abstract property
(e.g., one class ... | http://arxiv.org/abs/1607.08366v1 | 1607.08366 | 2016-07-28 | cybersecurity |
25 years of criticality in neuroscience -- established results, open controversies, novel concepts | Twenty-five years ago, Dunkelmann and Radons (1994) proposed that neural
networks should self-organize to a critical state. In models, criticality
offers a number of computational advantages. Thus this hypothesis, and in
particular the experimental work by Beggs and Plenz (2003), has triggered an
avalanche of research,... | http://arxiv.org/abs/1903.05129v1 | 1903.05129 | 2019-03-12 | cybersecurity |
25 Years of Self-Organized Criticality: Concepts and Controversies | Introduced by the late Per Bak and his colleagues, self-organized criticality
(SOC) has been one of the most stimulating concepts to come out of statistical
mechanics and condensed matter theory in the last few decades, and has played a
significant role in the development of complexity science. SOC, and more
generally ... | http://arxiv.org/abs/1504.04991v1 | 1504.04991 | 2015-04-20 | cybersecurity |
25 Years of Self-Organized Criticality: Numerical Detection Methods | The detection and characterization of self-organized criticality (SOC), in
both real and simulated data, has undergone many significant revisions over the
past 25 years. The explosive advances in the many numerical methods available
for detecting, discriminating, and ultimately testing, SOC have played a
critical role ... | http://arxiv.org/abs/1506.08142v1 | 1506.08142 | 2015-06-26 | cybersecurity |
25 Years of Signal Processing Advances for Multiantenna Communications | Wireless communication technology has progressed dramatically over the past 25 years, in terms of societal adoption as well as technical sophistication. In 1998, mobile phones were still in the process of becoming compact and affordable devices that could be widely utilized in both developed and developing countries. T... | https://arxiv.org/abs/2304.02677v1 | 2304.02677 | 2023-04-05 | cybersecurity |
25 years of XMM-Newton observations of the Sgr A complex: 3D distribution and internal structure of the clouds | Sgr A* is currently very faint. However, X-ray radiation reflected by the Sgr A complex, a group of nearby molecular clouds, suggests that it went through one or more periods of high activity some hundreds of years ago. We aim to determine whether previously proposed physical scenarios are consistent with the observed ... | https://arxiv.org/abs/2501.09737v1 | 2501.09737 | 2025-01-16 | cybersecurity |
26.5 ps Time Resolution Using 50 μm Low Gain Avalanche Detectors Fabricated by Micron Semiconductor Ltd | Low Gain Avalanche Detectors (LGADs) are silicon semiconductor sensors with an implanted thin p-doped multiplication layer that is designed to provide low gain. Most importantly, LGADs are specifically engineered to provide excellent spatial and temporal resolution simultaneously. The technology shows promising prospec... | https://arxiv.org/abs/2310.06183v1 | 2310.06183 | 2023-10-09 | cybersecurity |
$^{26}$Al gamma rays from the Galaxy with INTEGRAL/SPI | The presence of radioactive $^{26}$Al at 1.8 MeV reflects ongoing nucleosynthesis in the Milky Way. Diffuse emission from its decay can be measured with gamma-ray telescopes in space. The intensity, line shape, and spatial distribution of the $^{26}$Al emission allow a study of these nucleosynthesis sources. The line p... | https://arxiv.org/abs/2212.11228v1 | 2212.11228 | 2022-12-21 | cybersecurity |
26Al kinematics: superbubbles following the spiral arms? Constraints from the statistics of star clusters and HI supershells | High energy resolution spectroscopy of the 1.8 MeV radioactive decay line of
26Al with the SPI instrument on board the INTEGRAL satellite has recently
revealed that diffuse 26Al has large velocities in comparison to other
components of the interstellar medium in the Milky Way. 26Al shows Galactic
rotation in the same s... | http://arxiv.org/abs/1504.03120v1 | 1504.03120 | 2015-04-13 | cybersecurity |
2.6mJ/100Hz CEP stable near-single-cycle 4{\mu}m laser based on OPCPA and hollow-core-fiber compression | A carrier envelope phase stable near-single cycle mid-infrared laser based on
optical parametric chirped pulse amplification and hollow-core-fiber
compression is demonstrated. 4 {\mu}m laser pulses with 11.8 mJ energy are
delivered from a KTA based OPCPA with 100 Hz repetition rate, and compressed to
be ~105 fs by a tw... | http://arxiv.org/abs/1712.07327v1 | 1712.07327 | 2017-12-20 | cybersecurity |
$2.6 M_\odot$ Compact Object and Neutron Stars within Eddington-Inspired Born-Infeld Theory of Gravity | In the context of whether a massive compact object recently observed in the GW190814 event is a neutron star (NS) or not, we have studied the role of the parameters $\kappa$ and $\Lambda_c$ of the Eddington-inspired Born-Infeld (EiBI) gravity theory on the NS mass-radius relation, moment of inertia, and tidal deformabi... | https://arxiv.org/abs/2109.05718v1 | 2109.05718 | 2021-09-13 | cybersecurity |
26ms Inference Time for ResNet-50: Towards Real-Time Execution of all DNNs on Smartphone | With the rapid emergence of a spectrum of high-end mobile devices, many
applications that required desktop-level computation capability formerly can
now run on these devices without any problem. However, without a careful
optimization, executing Deep Neural Networks (a key building block of the
real-time video stream p... | http://arxiv.org/abs/1905.00571v1 | 1905.00571 | 2019-05-02 | cybersecurity |
27.5-29.5 GHz Switched Array Sounder for Dynamic Channel Characterization: Design, Implementation and Measurements | A pre-requisite for the design of wireless systems is the understanding of the propagation channel. While a wealth of propagation knowledge exists for bands below 6 GHz, the same can not be said for bands approaching millimeter-wave frequencies. In this paper, we present the design, implementation and measurement-based... | https://arxiv.org/abs/2105.10712v1 | 2105.10712 | 2021-05-22 | cybersecurity |
275 Candidates and 149 Validated Planets Orbiting Bright Stars in K2 Campaigns 0-10 | Since 2014, NASA's K2 mission has observed large portions of the ecliptic
plane in search of transiting planets and has detected hundreds of planet
candidates. With observations planned until at least early 2018, K2 will
continue to identify more planet candidates. We present here 275 planet
candidates observed during ... | http://arxiv.org/abs/1802.05277v2 | 1802.05277 | 2018-03-26 | cybersecurity |
2.75D: Boosting learning by representing 3D Medical imaging to 2D features for small data | In medical-data driven learning, 3D convolutional neural networks (CNNs) have started to show superior performance to 2D CNNs in numerous deep learning tasks, proving the added value of 3D spatial information in feature representation. However, the difficulty in collecting more training samples to converge, more comput... | https://arxiv.org/abs/2002.04251v3 | 2002.04251 | 2020-02-11 | cybersecurity |
$^{27}$Al NMR spectroscopic and DFT computational study of the quadrupole coupling of aluminium in two polymorphs of the complex aluminium hydride CsAlH4 | The quadrupole coupling constant $C_{\text{Q}}$ and the asymmetry parameter $\eta$ of the aluminium nuclei in two polymorphs of the complex aluminium hydride CsAlH4 are determined from both $^{27}$Al MAS NMR spectra and $^{27}$Al NMR spectra recorded for stationary samples by using the Solomon echo sequence. The accura... | https://arxiv.org/abs/2410.07731v1 | 2410.07731 | 2024-10-10 | cybersecurity |
$^{27}$Al NMR study of the magnetic Weyl semimetal CeAlGe | Motivated by the recent observations of electronic correlation effect [M. Corasaniti \textit{et al}., Phys. Rev. B \textbf{104}, L121112 (2021)] and topology-stabilized magnetic fluctuations [N. Drucker \textit{et al}., Nat. Commun. \textbf{14}, 5182 (2023)] in the noncentrosymmetric magnetic Weyl semimetal candidate C... | https://arxiv.org/abs/2403.06476v2 | 2403.06476 | 2024-03-11 | cybersecurity |
27Al-NMR Study on a square-Kagome lattice antiferromagnet | NMR study has been performed on an S = 1/2 antiferromagnet KCu6AlBiO4(SO4)5Cl on the square-Kagome lattice, which has three slightly inequivalent nearest-neighbor interactions. Because of the geometrical frustration inherited from triangles within the square kagome lattice and of the low dimensionality, a long range ma... | https://arxiv.org/abs/2402.18125v1 | 2402.18125 | 2024-02-28 | cybersecurity |
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