bluuebunny/crossref_metadata_2025_split huggingface dataset:
An HIT Ecosystem Capability Maturity Model for System-Wide Implementation, Management, and Governance
Authors: Shivers Jennifer , Amlung Joseph , Cullen Theresa 
Published: August 2020

Abstract
Background An effective health system is dependent on the people, processes, and technology required to support its successful use. Technology, including essential health information technology (HIT) components, is not enough to successfully support quality patient care delivery. Without a strong support structure, HIT tools and data alone will fail to meet the desired goal of quality patient care that achieves health equity. Multiple factors, including governance processes, policies, and standards, are critical for the development, implementation, and consistent and effective use of clinical HIT systems and the resulting data. A comprehensive model that provided support for a holistic assessment of the HIT ecosystem could not be identified. The Facility HIT Ecosystem Capability Maturity Model (ECMM) was designed in response to this need.
Objectives This project was designed to create and propose a comprehensive framework for self-assessment and support of a maturation pathway for a facility's comprehensive HIT ecosystem, including governance processes, policies, and standards.
Methods Iterative methods based on agile and human-centered design practices were used to create and validate the framework and its contents.
Results The ECMM and toolkit support a health care facility's clinical or technical leadership, including chief medical officers, chief information officers, and chief medical/health/nursing informatics officers, in identifying and assessing policies, processes, and capabilities surrounding HIT. This framework supports iterative evaluation and step-ladder style progression and goal setting to achieve desired capabilities, both at the local level and at the level of supporting organizations. Reviewer feedback was used to provide iterative tool improvement and refinement.
Conclusion The proposed HIT maturity model toolkit showed potential as a tool to help empower health care facilities and their leadership to advance their HIT ecosystem.
Assessment of Hearing Loss in Patients Receiving Chemoradiotherapy in Adjuvant Setting for Head and Neck Malignancy
Authors: Gupta Vani Krishana , Bhat Mahesh , Rao Vinay Vaidyanathan , Surendra Vishak 
Published: August 2020

Abstract
Introduction The aim of the study is to assess the hearing loss in patients who receive chemoradiation (chemoradiotherapy or CTRT) for head and neck malignancies.
Materials and Methods Prospective study was conducted in the Department of ENT of a tertiary care center from September 2013 to August 2014. Forty patients suffering from head and neck malignancies (histologically proven) were included in the study. Patients with pre-existing hearing loss were excluded. All patients received radiotherapy dose of 66 to 70 Gy given as 2 Gy/d, 5 d/wk and chemotherapy dose of cisplatin 35 mg/m2 once a week for 6 weeks. Hearing was assessed by pure tone audiometry (PTA) and impedance audiometry conducted at regular intervals. Mcnemars chi-square test was used to compare the impedance and paired t-test and Pearson’s correlation were used to compare PTA at various stages.
Results Predominantly male patients (28) falling in the age group of 40 to 60 years, suffered from various head and neck cancer, most common being oropharynx (14). Twenty patients developed sensorineural hearing loss (SNHL)—11(55%) had mild, seven (35%) had moderate, and two (10%) had severe grade of SNHL. Majority of these patients, 12 (60%) started developing SNHL mid-therapy, five (25%) at the completion of therapy and three (15%) 3 months post-therapy. Hearing loss was found to be more with two-dimensional radiotherapy (2DRT) and three-dimensional radiotherapy (3DRT) than with intensity-modulated radiotherapy (IMRT) as assessed by serial PTA. The average dose of radiation to right and left ears, respectively were 27.10 and 24.66 Gy. The incidence of otitis media with effusion increased during the treatment accounting for the conductive hearing loss irrespective of the modality of radiation used.
Conclusion CTRT causes significant hearing loss in patients suffering from head and neck malignancies leading to further increase in the morbidity. Screening audiological assessment would be helpful to know the pretherapy status of the ear. Using newer modalities like IMRT can reduce hearing loss. Regular audiological screening can catch it at its onset and help in early use of hearing aids.
A numerical study on efficient jury size
Authors: Watanabe Takamitsu 
Published: August 2020

AbstractFor judicial democracy, many societies adopt jury trials, where verdicts are made by a unanimous vote of, conventionally, 12 lay citizens. Here, using the majority-vote model, we show that such jury sizes achieve the best balance between the accuracy of verdicts and the time spent for unanimous decision-making. First, we identify two determinants of the efficient jury size: the opinion homogeneity in a community decreases the optimal jury size by affecting the accuracy of verdicts; the anti-conformity tendency in the community also reduces the efficient jury size by prolonging the time to reach unanimous verdicts. Moreover, we find an inverse correlation between these two determinants, which prevents over-shrinking and excessive expansion of the efficient jury size. Finally, by applying these findings into real-life settings, we narrow down the efficient jury size to 11.8 ± 3.0. Given that such a simple toy model can explain the jury sizes in the actual societies, the number of jurors may have been implicitly optimised for efficient unanimous decision-making throughout human history.
Abiotic redox reactions in hydrothermal mixing zones: Decreased energy availability for the subsurface biosphere
Authors: McDermott Jill M. , Sylva Sean P. , Ono Shuhei , German Christopher R. , Seewald Jeffrey S. 
Published: August 2020

Significance
Hydrothermal fluid geochemistry exerts a key control on subseafloor microbial community structure and function. However, the effects of microbial metabolic activity, thermal decomposition of biomass, and abiotic reactions on geochemistry remain unconstrained. Depletions in molecular hydrogen and enrichments in methane in submarine hydrothermal mixing zones have been interpreted to reflect the influence of an active subseafloor biosphere. In contrast, our work reveals that these chemical shifts are driven by abiotic and thermogenic processes at temperatures beyond the limit for life. These findings have critical implications for constraining the extent to which global geochemical cycles can sustain a deep biosphere, and for the global molecular hydrogen budget.
An examination of geometrical and potential time delays in gravitational lensing
Authors: Tsupko Oleg Yu , Bisnovatyi-Kogan Gennady S , Rogers Adam , Er Xinzhong 
Published: August 2020

Abstract
In this paper we investigate the relation between the potential and geometric time delays in gravitational lensing. In the original paper of Shapiro (1964), it is stated that there is a time delay in the radar signals between Earth and Venus that pass near a massive object (the Sun), compared to the path taken in the absence of any mass. The reason for this delay is connected with the influence of gravity on the coordinate velocity of a light ray in a gravitational potential. The contribution from the change of the path length, which happens to be of second order, is considered as negligible. Nevertheless, in the gravitational lens theory the geometrical delay, related to the change of path length, is routinely taken into account along with the potential term. In this work we explain this apparent discrepancy. We address the contribution of the geometric part of the time delay in different situations, and introduce a unified treatment with two limiting regimes of lensing. One of these limits corresponds to the time delay experiments near the Sun where the geometrical delay is shown to be negligible. The second corresponds to the typical gravitational lens scenario with multiple imaging where the geometrical delay is shown to be significant. We introduce a compact, analytical, and quantitative criteria based on relation between the angular position of source and the Einstein radius. This criterion allows one to find out easily when it is necessary to take the geometrical delay into account. In particular, it is shown that the geometrical delay is non-negligible in the case of good alignment between source, lens and observer, because in such a case it becomes a first order quantity (the same order as the potential term).
Inertial focusing in two dimensional flows with sharp viscosity stratification in a microchannel
Authors: Krishnaveni T , Renganathan T , Pushpavanam S 
Published: August 2020

Abstract
Recent experimental studies have shown that lateral particle migration can be controlled passively using stratified flows of co-flowing streams. In this study, we numerically analyze particle migration in a stratified Poiseuille flow of two liquids of different viscosities. A novel numerical approach using immersed boundary method is employed to perform 2D simulations in moving frame of reference. The effect of viscosity ratio, flowrate ratio, Reynolds number and particle size on focusing position is analyzed to identify conditions under which particle migration occurs from one fluid to the other. It is shown that the particle migrates to the low viscous fluid beyond a critical flowrate ratio which increases with particle size. The results of the present study can be used to select suitable flowrate ratio to enable separation of particles of different sizes in membrane less separators.
Voltage-driven displacement of magnetic vortex cores
Authors: Ghidini M , Pellicelli R , Mansell R , Pesquera D , Nair B , Moya X , Farokhipoor S , Maccherozzi F , Barnes C H W , Cowburn R P , Dhesi S S , Mathur N D 
Published: August 2020

Abstract
Magnetic vortex cores in polycrystalline Ni discs underwent non-volatile displacements due to voltage-driven ferroelectric domain switching in single-crystal BaTiO3. This behaviour was observed using photoemission electron microscopy to image both the ferromagnetism and ferroelectricity, while varying in-plane sample orientation. The resulting vector maps of disc magnetization match well with micromagnetic simulations, which show that the vortex core is translated by the transit of a ferroelectric domain wall, and thus the inhomogeneous strain with which it is associated. The non-volatility is attributed to pinning inside the discs. Voltage-driven displacement of magnetic vortex cores is novel, and opens the way for studying voltage-driven vortex dynamics.
Physical properties of the layered oxypnictide Sr2ScFeAsO3: a Mössbauer study down to 1.7 K
Authors: Idczak R , Bukowski Z , Nguyen T T H , Tran V H 
Published: August 2020

Abstract
A polycrystalline sample of Sr2ScFeAsO3 was studied by 57Fe Mössbauer spectroscopy down to 1.7 K. In contrast to the earlier Mössbauer data, the obtained in this work results indicate that Sr2ScFeAsO3 is in paramagnetic state down to 10 K, while the spectra recorded at 4.6 K and 1.7 K show a weak magnetic order of Fe moments in the Fe2As2 layers. Temperature dependences of isomer shift and quadrupole splitting/shift are compared with specific heat and electrical resistivity data from earlier investigations revealing different local Debye temperatures for the Fe2As2 and perovskite-related Sr2ScO3 layers. Finally, a fast decrease of the carrier density was observed below 80 K and this effect seems to be responsible for the absence of superconductivity in the studied compound.
New type of rotation of chiral mechanical metamaterials
Authors: Dudek K K 
Published: August 2020

Abstract
In this work, it is shown experimentally for the first time that chiral mechanical metamaterials can induce their own global rotational motion, i.e. the rotation of the entire system with respect to its centre of mass, without any external forces acting on it. To better understand this effect, which is very different from other types of deformations studied in the literature and offers an insight into what aspects of dynamic behaviour of mechanical metamaterials are yet to be discovered, a number of different prototypes of chiral systems are analysed where it is shown what type of a design allows to maximise the extent of the exhibited rotation. In addition to this, the theoretical model corresponding to computer simulations utilising the Molecular Dynamics approach is proposed and used to establish the hypothetical limit of the considered phenomenon. It is also discussed what are the parameters that can be used in order to fine-tune the extent of the global rotation exhibited by chiral systems. Finally, it is discussed that the concept studied in this work can be used in numerous applications such as satellites, spacecraft, telescopes employed in space as well as novel robotics to control their global rotational motion.
Highly efficient XUV generation via high-order frequency mixing
Authors: Khokhlova M A , Strelkov V V 
Published: August 2020

Abstract
The efficient generation of the coherent XUV light via frequency conversion of intense laser drivers is a problem of both fundamental and technological importance. Increasing the intensity of the generated high harmonics by raising the intensity of the driving field works only up to a point: at high intensities, rapid ionisation of the medium limits the conversion efficiency. Considering the combined effect of the phase-matching and of the blue shift of the driving field during its propagation in a rapidly ionising medium, we show that the latter can be the dominant limiting mechanism. We introduce a new spatial scale, the blue-shift length, which sets the upper bound for the quadratic intensity growth of the generated harmonics. Moreover, we show that this seemingly fundamental restriction can be overcome by using an additional generating weak mid-IR field. For specific combinations of frequencies of the generating fields, the corresponding high-order frequency-mixing process does not suffer from the blue shift of the drivers and phase mismatch, and thus its efficiency grows quadratically with propagation distance. Our results thus open a new route for highly efficient generation of coherent XUV light.
Probing electroweak dark matter at 14 TeV LHC *
Authors: Xu Shuai , Zheng Si-Bo 
Published: August 2020

Abstract
Well-motivated electroweak dark matter is often hosted by an extended electroweak sector that also contains new lepton pairs with masses near the weak scale. In this study, we explore such electroweak dark matter by combining dark matter direct detection experiments and high-luminosity LHC probes of new lepton pairs. Using Z- and W-associated electroweak processes with two or three lepton final states, we show that depending on the overall coupling constant, dark matter masses of up to 170-210 GeV can be excluded at the

level and those up to

GeV can be discovered at the

level at the 14 TeV LHC with integrated luminosities of 300 fb

and 3000 fb

, respectively.
Radiative decays of f1(1285) as the K*K̅
molecular state *
Authors: Xie Ju-Jun , Li Gang , Liu Xiao-Hai 
Published: August 2020

Abstract
With

as a dynamically generated resonance from

interactions, we estimate the rates of the radiative transitions of the

meson to the vector mesons

,

and

. These radiative decays proceed via the kaon loop diagrams. The calculated results are in a fair agreement with experimental measurements. Some predictions can be tested experimentally; their analysis will be valuable for decoding the strong coupling of the

state to the

channel.
Dark matter search at colliders and neutrino floor *
Authors: Cao Qing-Hong , Wei An-Kang , Xiang Qian-Fei 
Published: August 2020

Abstract
The sensitivity of the direct detection of dark matter (DM) approaches the so-called neutrino floor, below which it is difficult to disentangle the DM candidate from the neutrino background. In this work, we consider the scenario that no DM signals are reported in various DM direct detection experiments and explore whether collider searches could probe DM below the neutrino floor. We adopt several simplified models in which the DM candidate couples to electroweak gauge bosons or leptons in the standard model only through high-dimensional operators. After including the RGE running effect, we investigate the constraints of direct detection, indirect detection, and collider searches. The collider search can probe light DM below the neutrino floor. Particularly, for the effective interaction of

, current data from the mono-photon channel at the 13 TeV LHC has already covered the entire parameter space of the neutrino floor.
Null geodesics, quasinormal modes, and thermodynamic phase transition for charged black holes in asymptotically flat and dS spacetimes *
Authors: Wei Shao-Wen , Liu Yu-Xiao 
Published: August 2020

Abstract
A numerical study has indicated that there exists a relation between the quasinormal modes and the Davies point for a black hole. In this paper, we analytically study this relation for charged Reissner-Nordström black holes in asymptotically flat and de Sitter (dS) spacetimes in the eikonal limit, under which the quasinormal modes can be obtained from the null geodesics using the angular velocity

and the Lyapunov exponent

of the photon sphere. Both in asymptotically flat and dS spacetimes, we observe spiral-like shapes in the complex quasinormal mode plane. However, the starting point of the shapes does not coincide with the Davies point. Nevertheless, we find a new relation in which the Davies point exactly meets the maximum temperature T in the T-

and T-

planes. In a higher-dimensional asymptotically flat spacetime, although there is no spiral-like shape, such a relation still holds. Therefore, we provide a new relation between black hole thermodynamics and dynamics in the eikonal limit. Applying this relation, we can test the thermodynamic property of a black hole using the quasinormal modes.
Modified astrophysical S-factor of 12C+12C fusion reaction at sub-barrier energies *
Authors: Li Y. J. , Fang X. , Bucher B. , Li K. A. , Ru L. H. , Tang X. D. 
Published: August 2020

Abstract
The 12C+12C fusion reaction plays a crucial role in stellar evolution and explosions. Its main open reaction channels include

, p, n, and 8Be. Despite more than a half century of efforts, large differences remain among the experimental data of this reaction measured using various techniques. In this work, we analyze the existing data using a statistical model. Our calculation shows the following: 1) the relative systematic uncertainties of the predicted branching ratios decrease as the predicted ratios increase; 2) the total modified astrophysical S-factors (S
* factors) of the p and

channels can be obtained by summing the S
* factors of their corresponding ground-state transitions and the characteristic

rays, while taking into account the contributions of the missing channels to the latter. After applying corrections based on branching ratios predicted by the statistical model, an agreement is achieved among the different data sets at E
cm> 4 MeV, while some discrepancies remain at lower energies, suggesting the need for better measurements in the near future. We find that theS
* factor recently obtained from an indirect measurement is inconsistent with the direct measurement value at energies below 2.6 MeV. We recommend upper and lower limits for the 12C+12C S
* factor based on the existing models. A new 12C+12C reaction rate is also recommended.
Microwave plasma torch for wound treatment
Authors: Bogdanov T. , Tsonev I. , Traikov L. 
Published: August 2020

Abstract
Cold atmospheric pressure plasma (CAP) sources have recently been proven to be an effective therapeutic source regarding wound healing. The most preferred and used plasma devices at this moment are the well-known dielectric barrier discharges (DBD) and free jet devices. In this work, we studied a low temperature plasma torch at atmospheric pressure sustained by a travelling electromagnetic wave excited by surfatron type wave launcher coupled to solid state microwave generator. This plasma source allows variation of discharge conditions: geometric parameters (discharge tube inner diameter and thickness), wave power and gas flow velocity which varies the main plasma parameters (length, gas temperature, concentration of charged particles and reactive species, UV and microwave radiation). Appropriate combination of the parameters lead to the low temperature plasma torch obtaining a gas temperature up to 30–37°C, suitable for in vivo treatment of BALB-C mouse models. The purpose of this research is to study the discharge conditions leading to acceleration of wound healing at short treatment times with relatively low gas flow and microwave power
Experimental Characterization of Positive and Negative Dielectric Constants and Artificial Anisotropy of Meta-materials in the Microwave Range
Authors: Dankov Plamen I. 
Published: August 2020

Abstract
This paper could be considered as a part of the invited talk “Metamaterials and Their Characterization in the Microwave Range” presented on the 8th International Workshop and Summer School on Plasma Physics (IWSSPP’2018, Kiten, Bulgaria), which has been dedicated to the classification, development, characterization and main applications of the metamaterials as one of the key issues of the modern technologies in the microwave, terahertz and optical regions. The experimental characterization of the actual equivalent dielectric parameters of the engineered artificial metamaterials is an important task in their design, nevertheless the existing relatively good correlation between the numerical simulations of these materials by 3D simulators and their measurements. The aim of the presented investigations is to give a helpful comparison between the most popular characterization methods based on free-space, waveguide and resonance measurements in the microwave range. The description of these methods has been based on the following principle: different metamaterials with surface metal inclusions have been selected and their main characteristics – equivalent dielectric constants in different directions (dielectric anisotropy) and the equivalent conductivity have been compared. A special attention has been directed to the description of measurements of positive and negative values of the permittivity, detection of artificial magnetic properties and resonance behaviour of the conductivity of the considered metamaterials.
Electromagnetic Modelling and Operation Analysis of Virtual Synchronous Machine for Frequency Response
Authors: Yuan L , Pan H N , Wang Z J , Wang F , Yuan M L 
Published: August 2020

Abstract
Virtual synchronous generators (VSGs) utilizing renewable energy sources (RESs) have been proven to be an appealing solution for overcoming the challenges of renewable energy sources (RESs) consumption in power systems. In order to address these issues, researches have been developed to improve the dynamic characteristics of VSG power systems. However, most of the studies at home and abroad focus on the negative impact of VSGs on the grid voltage, and few on the frequency, safety and efficiency of VSGs. The first part of this paper focuses on the VSG’s electromagnetic detail model with the ability to support the system voltage and frequency deviations, the second part discusses the mathematical investigation on its response as a VSG. Finally, according to the technical requirements of the power grid, mechanical and electromagnetic loads are simulated, the influence of service life is analyzed, and design suggestions are put forward.