bluuebunny/crossref_metadata_2025 huggingface dataset:
A bottom-up search for Lyman-continuum leakage in the Hubble Ultra Deep Field
Authors: Rivera-Thorsen T. E. , Hayes M. , Melinder J.
Published: August 2022

Context. When studying the production and escape of Lyman continuum (LyC) from galaxies, it is standard to rely on an array of indirect observational tracers in the preselection of candidate leakers.

Aims. In this work, we investigate how much ionizing radiation might be missed due to these selection criteria by completely removing them and performing a search selected purely from rest-frame LyC emission; and how that affects our estimates of the ionizing background.

Methods. We inverted the conventional method and performed a bottom-up search for LyC leaking galaxies at redshifts 2 ≲ z ≲ 3.5. Using archival data from HST and VLT/MUSE, we ran source finding software on UV-filter HST images from the Hubble Ultra Deep Field (HUDF), and subjected all detected sources to a series of tests to eliminate those that are inconsistent with being ionizing sources.

Results. We find six new and one previously identified candidate leakers with absolute escape fractions ranging from 36% to ∼100%. Our filtering criteria eliminate one object previously reported as a candidate ionizing emitter in the literature, and we report non-detections in the rest-frame Lyman continuum of two other previously reported sources. We find that our candidates make a contribution to the metagalactic ionizing field of log10(ϵν) = 25.32−0.21+0.25 and 25.29−0.22+0.27 erg s−1 Hz−1 cMpc−3 for the full set of candidates and for the four strongest candidates only; both values are higher than but consistent with other recent figures in the literature.

Conclusions. Our findings suggest that galaxies that do not meet the usual selection criteria may make a non-negligible contribution to the cosmic ionizing field. We recommend that similar searches be carried out on a larger scale in well-studied fields with both UV and large ancillary data coverage, for example in the full set of CANDELS fields.
Fractional modeling of urban growth with memory effects
Authors: Kee Chun Yun , Chua Cherq , Zubair Muhammad , Ang L. K.
Published: August 2022

The previous urban growth model by L. M. A. Bettencourt was developed under the framework of a constant β scaling law in an ordinary differential equation based model assuming instantaneous dynamic growth. In this paper, we improve the model by considering the memory effects based on fractional calculus. By testing this new fractional model to different urban attributes related to sustainable growth, such as congestion delay, water supply, and electricity consumption for selected countries (the USA, China, Singapore, Canada, Switzerland, New Zealand), this new model may provide better agreement to the annual population growth by numerically finding the optimal fractional parameter for different attributes. Based on the theoretical time-independent scaling of β=5/6 (sub-linear) and β=7/6 (super-linear), we also analyze the population growth of 42 countries from 1960 to 2018. Furthermore, time-dependent scaling law extracted from empirical data is shown to provide further improvements. With better agreement between this proposed fractional model and the collected empirical population growth data, useful parameters can be estimated. For example, the maintenance cost and additional cost related to the sustainable growth (for a given city’s attribute) can be quantitatively determined for the informed decision and urban planning for the sustainable growth of cities.
Demonstration of yellow (568 nm) stimulated emission from optically pumped InGaN/GaN multi-quantum wells
Authors: Li Panpan , Zhang Haojun , Li Hongjian , Cohen Trevor , Anderson Ryan , Wong Matthew S. , Trageser Emily , Chow Yi Chao , Vries Mattanjah de , Nakamura Shuji , DenBaars Steven P.
Published: August 2022

We demonstrate room-temperature stimulated emission at 568 nm from low dislocation density InGaN/GaN multi-quantum wells. For a 1.4 mm long and a 50 μm wide ridge bar optically pumped by a high-power pulsed laser, we observed an emission peak at 568 nm with a narrow spectral width of less than 2 nm at room temperature. The measured pumping threshold is less than 1.5 MW/cm2, and the polarization ratio of the emission is over 90%. This demonstration paves the way for the future development of electrically injected InGaN semiconductor yellow laser diodes.
Enhancing coexistence of mobile species in the cyclic competition system by wildlife refuge
Authors: Lu Yikang , Shen Chen , Wu Mengjie , Du Chunpeng , Shi Lei , Park Junpyo
Published: August 2022

We investigate evolving dynamics of cyclically competing species on spatially extended systems with considering a specific region, which is called the “wildlife refuge,” one of the institutional ways to preserve species biodiversity. Through Monte-Carlo simulations, we found that the refuge can play not groundbreaking but an important role in species survival. Species coexistence is maintained at a moderate mobility regime, which traditionally leads to the collapse of coexistence, and eventually, the extinction is postponed depending on the competition rate rather than the portion of the refuge. Incorporating the extinction probability and Fourier transform supported our results in both stochastic and analogous ways. Our findings may provide valuable evidence to assist fields of ecological/biological sciences in understanding the presence and construction of refuges for wildlife with associated effects on species biodiversity.
Effect of amorphous phase on the migration mechanism of basal/prismatic interface in Mg alloys
Authors: Shi R. , Song H. Y. , Han L.
Published: August 2022

A dual-phase nanostructured amorphous/crystalline model is an effective method to improve the mechanical properties of Mg alloys. However, the fundamental strengthening mechanism related to the interaction between basal/prismatic (BP) and amorphous phase in the dual-phase Mg alloys is still unclear. Here, the effects of the size and spacing of amorphous nanopillars on the mechanical properties and the BP interface migration behavior of the bicrystalline Mg alloys are investigated by the molecular dynamics simulation method. The results show that due to the attraction of amorphous nanopillar to interfacial dislocations, the introduction of amorphous nanopillar reduces the yield stress of the bicrystalline Mg alloys, and the yield stress decreases with the increase of the amorphous nanopillar radius. The results indicate that the amorphous nanopillar has an obvious blocking effect on the migration of the BP interface, and the larger the radius of amorphous nanopillars (or the smaller the spacing of amorphous nanopillars), the more obvious the strengthening effect. In addition, the migration mechanism of the BP interface in the bicrystalline Mg alloys is analyzed in detail.
Influence of heterogeneity of infection thresholds on epidemic spreading with neighbor resource supporting
Authors: Zhu Xuzhen , Wang Yuxin , Zhang Ningbo , Yang Hui , Wang Wei
Published: August 2022

The spread of disease on complex networks has attracted wide attention in physics, mathematics, and epidemiology. Recent works have demonstrated that individuals always exhibit different criteria for disease infection in a network that significantly influences the epidemic dynamics. In this paper, considering the heterogeneity of node susceptibility, we proposed an infection threshold model with neighbor resource support. The infection threshold of an individual is associated with the degree, and a parameter follows the normal distribution. Based on improved heterogeneous mean-field theory and extensive numerical simulations, we find that the mean and standard deviation of the infection threshold model can affect the phase transition and epidemic outbreak size. As the mean of the normal distribution parameter increases from a small value to a large value, the system shows a change from a continuous phase transition to a discontinuous phase transition, and the disease even stops spreading. The disease spreads from a discontinuous phase transition to continuous for the sizeable mean value as the standard deviation increases. Furthermore, the standard deviation also varies in the outbreak size.
Random site percolation on honeycomb lattices with complex neighborhoods
Authors: Malarz Krzysztof
Published: August 2022

We present a rough estimation—up to four significant digits, based on the scaling hypothesis and the probability of belonging to the largest cluster vs the occupation probability—of the critical occupation probabilities for the random site percolation problem on a honeycomb lattice with complex neighborhoods containing sites up to the fifth coordination zone. There are 31 such neighborhoods with a radius ranging from one to three and containing 3–24 sites. For two-dimensional regular lattices with compact extended-range neighborhoods, in the limit of the large number z of sites in the neighborhoods, the site percolation thresholds pc follow the dependency pc∝1/z, as recently shown by Xun et al. [Phys. Rev. E 105, 024105 (2022)]. On the contrary, non-compact neighborhoods (with holes) destroy this dependence due to the degeneracy of the percolation threshold (several values of pc corresponding to the same number z of sites in the neighborhoods). An example of a single-value index ζ=∑iziri—where zi and ri are the number of sites and radius of the ith coordination zone, respectively—characterizing the neighborhood and allowing avoiding the above-mentioned degeneracy is presented. The percolation threshold obtained follows the inverse square root dependence pc∝1/ζ. The functions boundaries() (written in C) for basic neighborhoods (for the unique coordination zone) for the Newman and Ziff algorithm [Phys. Rev. E 64, 016706 (2001)] are also presented. The latter may be useful for computer physicists dealing with solid-state physics and interdisciplinary statistical physics applications, where the honeycomb lattice is the underlying network topology.
Monolayer Ge2S: An auxetic semiconductor with high carrier mobility for metal (Na, K, Mg)-ion battery anodes
Authors: Jiang Tao , Zhu Yu-Jie , Ye Xiao-Juan , Liu Chun-Sheng
Published: August 2022

Using first-principles calculations, we propose a new two-dimensional Ge2S (space group P21212) with unique mechanical and electronic properties. Monolayer Ge2S has excellent thermal, mechanical, and dynamic stabilities, exhibiting a semiconducting behavior with an indirect bandgap and anisotropic carrier mobility. The uniaxial strain along the zigzag direction can induce an indirect-to-direct bandgap transition. Remarkably, Ge2S possesses large in-plane negative Poisson's ratios, comparable with that of well-known penta-graphene. Moreover, we identify Ge2S as a high-performance anode material for metal-ion batteries. It shows metallic features after adsorbing Na, K, and Mg, providing good electrical conductivity during the charge/discharge process. The diffusion of metal ions on Ge2S is anisotropic with modest energy barriers in the armchair direction of 0.12, 0.39, and 0.76 eV for Na, K, and Mg, respectively. Ge2S can adsorb metal atoms up to a stoichiometric ratio of 1:1, which yields storage capacities of 151.17, 151.17, and 302.35 mA h g−1 for Na, K, and Mg, respectively. The volume of Ge2S shrinks slightly upon the adsorption of metal ions even at high concentrations, ensuring a good cyclic stability. Besides, the average open circuit voltage (0.30–0.70 V) falls within the acceptable range (0.1–1.0 V) of the anode materials. These results make Ge2S a promising anode material for the design of future metal-ion batteries.
Alleviation of self-support in dual synthetic jet and its self-similarity of streamwise momentum flux
Authors: He Wei , Luo Zhenbing , Deng Xiong , Cheng Pan , Peng Wenqiang , Zhou Yan , Li Shiqing , Gao Tianxiang
Published: August 2022

A dual synthetic jet (DSJ) actuator has two chambers sharing the same wall equipped with a single oscillatory diaphragm. The novel structure doubles the function of synthetic jet (SJ) actuator and brings it merits that a traditional synthetic jet actuator does not have like resolving the problems of pressure loading and energy inefficiency. However, self-support, which is unique to DSJ, may result in weak jets or even no jets. In order to effectively solve the self-support problem of DSJ and further improve its performance, this paper proposes a novel DSJ exit structure with a penetrating channel. The experimental and numerical investigations prove that the jet penetration depth and streamwise momentum flux of DSJ are increased by nearly 25%–50%. Furthermore, through the analysis of a large number of simulation data, it is found that the streamwise momentum flux distributions of DSJ under random driving frequency and driving amplitude can be expressed by a unified mathematical fitting formula, that is, the streamwise momentum flux has self-similarity. This criterion can efficiently and quickly calculate the SJ/DSJ driving parameters required for effectively controlling the flow field.
Electron–phonon coupling of the Ti3Sb compound
Authors: Tayran Ceren , Kim Minsung , Çakmak Mehmet
Published: August 2022

Using the first-principles method based on density functional theory, we investigate the electronic, mechanical, phononic, superconducting, and topological properties of the A15 superconductor Ti3Sb with/without the inclusion of spin–orbit coupling (SOC). We find that the calculated elastic constants satisfy the Born stability criteria and the ductile nature of Ti3Sb. The result of phonon calculations reveals that the Pm3¯n structure is dynamically stable. Sb atoms are dominated in the low-frequency region due to the mass difference between Ti and Sb from partial phonon calculations. Our electronic structure calculations show that Ti3Sb has metallic band structures with Ti-d bands near the Fermi energy. The electron–phonon coupling constant (λ≃0.80) indicates that Ti3Sb has strong electron–phonon coupling. The critical temperature (Tcμ⋆=0.10) is found to be 6.24 and 6.56 K with and without the SOC effect, respectively. Due to Ti’s relatively small SOC strength, we do not find evidence of non-trivial topology in contrast to Ta compounds such as Ta3Sb.
High-sensitivity characterization of ultra-thin atomic layers using spin-Hall effect of light
Authors: Panda Janmey J. , Sahoo Krishna R. , Praturi Aparna , Lal Ashique , Viswanathan Nirmal K. , Narayanan Tharangattu N. , Rajalakshmi G.
Published: August 2022

The fast-emerging diverse applications using a variety of magnetic/non-magnetic heterostructure ultra-thin films warrant the sensitive characterization of the electrical, optical, and magnetic properties of the interface. As a practical alternate to the conventional magneto-optic Kerr effect (MOKE) method, we propose and demonstrate the spin-Hall effect of the light (SHEL)-based MOKE method with competitive sensitivity and scope for further improvement. The SHEL-MOKE technique is a versatile surface characterization tool for studying materials’ magnetic and dielectric ordering, which are extracted from the variations to the phase-polarization characteristics of a focused beam of light reflected at the interface, as a function of the applied magnetic field. Using this technique, we measure the magnetic field dependent complex Kerr angle and the coercivity in ultra-thin films of permalloy (Py) and at molybdenum disulfide (MoS2)—permalloy (MSPy) hetero-structure interfaces. A comprehensive theoretical model and simulation data are provided to strengthen the potential of this simple non-invasive optical method. The theoretical model is subsequently applied to extract the optical conductivity of non-magnetic ultra-thin layers of MoS2.
A machine learning strategy for modeling and optimal design of near-field radiative heat transfer
Authors: Wen Shizheng , Dang Chunzhuo , Liu Xianglei
Published: August 2022

The recent decade has witnessed the advent of near-field radiative heat transfer (NFRHT) in a wide range of applications, including thermal photovoltaics and thermal diodes. However, the design process for these thermal devices has remained complex, often relying on the intuition and expertise of the designer. To address these challenges, a machine learning (ML) strategy based on the combination of an artificial neural network (ANN) and a genetic algorithm (GA) is presented. The ANN is trained to model representative scenarios, viz., NFRHT between metamaterials and NFRHT and thermal rectification between nanoparticles. The influence of different problem complexities, i.e., the number of input variables of function to be fitted, on effectiveness of the trained ANN is investigated. Test results show that ANNs can obtain the radiative heat flow and rectification ratio accurately and rapidly. Subsequently, physical parameters for the largest radiative heat flow and rectification ratio are determined by the utilization of GA on the trained ANN, and underlying mechanisms of deterministic optimum are discussed. Our work shows that data-driven ML methods are a powerful tool, which offers unprecedented opportunities for future NFRHT research.
Addressable electrohydrodynamic jetting via tuning the potential drop of liquid within the printhead
Authors: Yang Weili , Duan Yongqing , Gao Jixin , Li Huayang , Huang YongAn , Yin Zhouping
Published: August 2022

Electrohydrodynamic (EHD) jetting is a promising technique with ultra-high resolution, broad compatibility with various inks, and tunable printing modes. However, it suffers from poor efficiency, which urgently calls for an addressable multi-nozzle printhead. Unlike traditional EHD printing which treats the liquid inside the printhead as an equal potential body, this work has proposed to realize addressable jetting by tuning the potential drop between the non-triggered nozzles (connected to a resistor and then grounded) and the triggered nozzles (connected to a high-voltage) through voltage division principle. We present an equivalent circuit model to predict the potential drop within the printhead, which largely depends on the liquid conductivity, channel character, and external auxiliary resistors, and these results match well with experiments and simulations. Besides, we further investigate the jet deflection behavior of the printhead, finding that 1.5 < H/dn < 3 (the ratio of printing height to the nozzle diameter) and 0.6 < k < 0.8 (the ratio of the non-triggered nozzles to the triggered nozzles) are preferred working area for addressable and precise EHD printing. This addressable design does not need a complex extractor underneath the nozzle, which is promising for future high-density and large-scale EHD printheads.
Pyrolysis of mass-selected (V2O5)NO− (N = 1–6) clusters in a high-temperature linear ion trap reactor
Authors: Ruan Man , Liu Qing-Yu , Zhao Yan-Xia , Wei Gong-Ping , Zhao Xi-Guan , Li Qian , He Sheng-Gui
Published: August 2022

A high-temperature linear ion trap that can stably run up to 873 K was newly designed and installed into a homemade reflectron time-of-flight mass spectrometer coupled with a laser ablation cluster source and a quadrupole mass filter. The instrument was used to study the pyrolysis behavior of mass-selected (V2O5) NO− ( N = 1–6) cluster anions and the dissociation channels were clarified with atomistic precision. Similar to the dissociation behavior of the heated metal oxide cluster cations reported in literature, the desorption of either atomic oxygen atom or molecular O2 prevailed for the (V2O5) NO− clusters with N = 2–5 at 873 K. However, novel dissociation channels involving fragmentation of (V2O5) NO− to small-sized V xO y− anions concurrent with the release of neutral vanadium oxide species were identified for the clusters with N = 3–6. Significant variations in branching ratios for different dissociation channels were observed as a function of cluster size. Kinetic studies indicated that the dissociation rates of (V2O5) NO− monotonically increased with the increase in cluster size. The internal energies carried by the (V2O5) NO− clusters at 873 K as well as the energetics data for dissociation channels have been theoretically calculated to rationalize the experimental observations. The decomposition behavior of vanadium oxide clusters from this study can provide new insights into the pyrolysis mechanism of metal oxide nanoparticles that are widely used in high temperature catalysis.
Low-carbon economic dispatch optimization of a virtual power plant based on deep reinforcement learning in China's carbon market environment
Authors: Wu Gengqi , Hua Haojun , Niu Dongxiao
Published: August 2022

In the context of China's dual carbon targets, reducing carbon emissions has become even more urgent and important. In order to reduce carbon emissions during the operation of a virtual power plant (VPP), a carbon market containing carbon emission allowances and the Chinese certified voluntary emission reduction project was introduced, and a VPP day-ahead and real-time coordinated scheduling optimization model was developed. This model was optimized to maximize benefits and minimize carbon emissions, further increasing the emphasis on carbon reduction from the VPP. The deep Q network (DQN) in the deep reinforcement learning algorithm was introduced to solve the complexity and non-linearity of the VPP model. Finally, to verify the validity and feasibility of the model and the solution algorithm, a VPP was chosen for the analysis of arithmetic examples. The results showed that: (1) in the calculation example, the VPP obtained more than 30 000 yuan of carbon revenue per day by participating in carbon trading, which effectively mobilizes interest in carbon emission reduction. (2) Compared to the scheduling result with profit maximization as the goal, the scheduling result considering dual goals reduced carbon emissions by 32.7% at the cost of a 2.6% reduction in revenue, obtaining a better compromise. (3) The two-stage coordinated scheduling optimization model obtained 3.6% higher gains than the day-ahead scheduling optimization model that took into account deviation penalties. (4) By comparing the scheduling model solution results from the Yalmip toolbox and DQN algorithm, the effectiveness and feasibility of the DQN algorithm were verified.
Visual metaphor in extended conceptual metaphor theory*
Authors: Kövecses Zoltán
Published: August 2022

My goal in the chapter is to examine a variety of visual experiences that appear to evoke visual metaphors. This is a range of experience types that extends from “sign-like” visual experiences to “non-sign-like” visual experiences. I propose that visual metaphors are evoked by paintings through winner’s podiums all the way to cityscapes and scenes in nature. The latter two (non-sign-like) cases, cityscapes and natural scenes, are not commonly subjected to serious examination from a CMT perspective. However, they provide us with new challenges in the study of visual metaphors, since they greatly extend the range of visual experience that might give rise to visual metaphors. I suggest, further, that the comprehension or interpretation of all of these visual experiences, including sign-like and non-sign-like alike, makes use of the same metaphorical processing mechanisms. The visual metaphors that are evoked by visual experiences can be based either on correlations or resemblance.
Uncanny resemblance*
Authors: Cavazzana Alessandro , Bolognesi Marianna
Published: August 2022

What is the relation between the three following elements: words, pictures, and conceptual representations? And how do these three elements work, in defining and explaining metaphors? These are the questions that we tackle in our interdisciplinary contribution, which moves across cognitive linguistics, cognitive sciences, philosophy and semiotics. Within the cognitive linguistic tradition, scholars have assumed that there are equivalent and comparable structures characterizing the way in which metaphor works in language and in pictures. In this chapter we analyze contextual visual metaphors, which are considered to be the most complex ones, and we compare them to those that in language are called indirect metaphors. Our proposal is that a syllogistic mechanism of comprehension permeates both metaphors expressed in the verbal modality as well as metaphors expressed in the pictorial modality. While in the verbal modality the metaphoric syllogism is solved by inference, we argue that in the pictorial modality the role of inference is performed through mental imagery.
Rendering, generalization and variation*
Authors: Knotková Magdaléna , Lu Wei-lun
Published: August 2022

The chapter presents a case study of how the use of multiple parallel texts may be employed as a useful research method in cognitive poetics, using the English version of Alice’s Adventures in Wonderland and Through the Looking-Glass and its four published Czech versions as the samples. In the analysis, we examine the language of space in alternative verbalizations of the same literary scene across languages (English and Czech) and within the target language (Czech), and the different mental images invoked by the different ways of verbalizing the same scene. Our analysis shows that the use of multiple parallel texts can be a helpful research method in cognitive poetics, in the sense that the method is capable of providing naturalistic and representative linguistic evidence of how languages systematically differ, even for a domain as basic as space.
Metaphor in The Cancer Poetry Project
Authors: Steen Gerard J.
Published: August 2022

In this paper I discuss the relation between metaphor and its role in the poetry written by cancer
patients and their caregivers as reflected in the two volumes of The Cancer Poetry Project, edited by
Karen Miller. I suggest that metaphor may be less important than is assumed by either Susan Sontag and other critical
philosophers, Lakoff and Johnson and other cognitive linguists, or Elena Semino and similar cognitive stylistic and
poetic approaches. Metaphor is there, and when we focus on it, it has a lot of potential power, both in negative and
in positive ways. But the use of metaphor seems to be relatively subsidiary to the more encompassing genre event of
writing a cancer poem for a range of different purposes in the experience of cancer. I conclude that metaphor scholars
who wish to apply the study of metaphor in medical practice need to pay more attention to these encompassing discourse
factors than happens today.
Researching embodied metaphor production through improvisational dance practice
Authors: Cienki Alan , O’Connor Michael
Published: August 2022

This contribution considers how artistic research based on the development of a form of practice
for improvisational dance draws upon, and helps develop, theory from cognitive linguistics and principles from the
phenomenology of movement. Dancers given the task of translating the sound of a singer’s voice (rather than her words)
into bodily actions while a song was played were found (based on their narratives about the experience) to have
intuitively employed certain forms of iconicity, image schemas, metaphor, and metonymy as principles for mapping sound
qualities to moving one’s body (movement processes) and assuming certain poses (products of movements). For example,
an extension of the tongue or opening of the jaw is parallel in certain ways to the muscular effort involved in the
extension of one’s arm, namely via mappings of iconicity between movement of different articulators. The abrupt onset
and decay (the aural image [Rhodes, 1994]) of air
turbulence coming from a pronounced consonant like ‘k’ affords understanding in terms of what Stern (1985) calls a vitality affect, allowing us to interpret the quality of plosiveness
across the domains of sound, touch, or action. This theoretically-informed improvisational dance practice explores the
bases of felt meaning that can give rise to and ground conceptual metaphors based on actions (as well as their
corresponding lexicalizations) – an issue explored extensively in R. Gibbs’ work.
Extended CMT and the dynamic systems theory of metaphor
Authors: Kövecses Zoltán
Published: August 2022

In the paper, I try to systematically compare what Gibbs calls the “dynamic systems view” of
metaphor with what I call “extended conceptual metaphor theory.” I suggest that both views share the assumption that
the totality of our experiences can contribute to metaphor production and comprehension. The two views also assume
that any of the experiences can prime the use of metaphors as discourse progresses. Given such similarities, I propose
that both views work well in accounting for metaphorical creativity and context-sensitivity. The most noteworthy
difference between them seems to be that while extended CMT is based on the integration of conceptual metaphors on
various levels of schematicity (such as image schemas, domains, frames), the dynamic systems view operates primarily
on the mental space level of metaphorical conceptualization.
Relationship management by means of solution-oriented questions in German psychodiagnostic interviews
Authors: Kabatnik Susanne , Nikendei Christoph , Ehrenthal Johannes C. , Spranz-Fogasy Thomas
Published: August 2022

The article addresses Solution-Oriented Questions (SOQs) as an interactional practice
for relationship management in psychodiagnostic interviews. Therapeutic alliance results from the concordance of alignment, as
willingness to cooperate regarding common goals, and of affiliation, as relationship based upon trust. SOQs particularly allow
for both: They are situated at the end of a troublesome topic area, which is linked to low agency on the patient’s side, and
they reveal understanding of and interest in the patient. Following the paradigm of Conversation Analysis and German Gesprächsanalyse this paper analyzes the design and functions of SOQs as a means for securing and
enhancing the relationship in the process of therapy. Our data comprise 15 videotaped first interviews following the manual of
the Operationalized Psychodynamic Diagnostics. The analyses refer to all SOQs found but will be illustrated by means of a
single conversation.
Assessment of extremity exposure to technologists working manually with 99mTc-labelled radiopharmaceuticals and with an automatic injection system for 18F-FDG
Authors: Andriulevičiūtė Inga , Skovorodko Kirill , Adlienė Diana , Bielinis Augustinas , Laurikaitienė Jurgita , Gricienė Birutė
Published: August 2022

The hands of nuclear medicine (NM) personnel involved in radiopharmaceutical preparation and administration can receive significant radiation doses. The dose distribution across the hand is nonuniform and the Hp(0.07) doses obtained by an individual passive ring dosimeter do not always present a real situation. The aim of this study was to assess the extremity exposure of NM workers working with 99mTc-labelled radiopharmaceuticals and with an automatic IRIDE (COMECER, Italy) 18F-FDG injection system. Hp(0.07) doses were measured using calibrated thermoluminescent dosimeters-100 (TLD-100) and were read by a RIALTO TLD (NE Technology) reader. It was found that the most exposed parts of the hand during work with 18F and 99mTc radionuclides are the fingertips of the thumb, index finger and middle finger. The maximum fingertip doses were 1.3–2.4 times higher compared with the doses from the typical monitoring position (base of the middle finger of the dominant hand). When working with 99mTc, the average hand doses were relatively high, i.e. 0.17 ± 0.04 and 0.37 ± 0.13 mSv Gbq−1 for the left and the right hand, respectively, during preparation, and 58 ± 20 and 53 ± 13 µSv GBq−1 for the left and the right hand, respectively, during administration of 99mTc labelled radiopharmaceuticals. Meanwhile, the lowest doses were found for hands during administration of 18F-FDG (average hand dose 28 ± 13 µSv GBq−1 for the left hand and 28 ± 7 µSv GBq−1 for the right hand), which shows the advantages of automated injection/infusion systems, thus implementation of automatic infusion/injection in hospitals could be an expedient way to optimize Hp(0.07) doses to NM workers.
Improved analog performance of FDSOI based NCFET with a ferroelectric–paraelectric–dielectric gate stack
Authors: Kansal Harshit , Medury Aditya Sankar
Published: August 2022

With the superior analog/RF performance of planar device architectures such as fully depleted silicon-on-insulator (FDSOI) MOSFETs, it becomes important to investigate the impact of a ferroelectric material in the gate stack, resulting in negative capacitance (NC) behavior, on the device performance. In this work, through calibrating the FDSOI MOSFET (as the baseline device architecture) with experimental data, we compare the impact of ferroelectric–dielectric (FE–DE) and ferroelectric–paraelectric–dielectric (FE–PE–DE) gate stacks on the electrostatics of an NCFET device for a practically realisable metal–ferroelectric–insulator–semiconductor (MFIS) structure. A suitable thickness of the ferroelectric (FE) layer in the FE–DE stack and the maximum drain–source voltage (

V

d
s

) that can be applied (determining the power supply voltage), are identified so as to ensure that constraints such as no negative differential resistance (NDR) effects, threshold voltage (

V

t
h

), sub-threshold slope (SS) invariability with drain voltage variations and hysteresis-free behavior in transfer characteristics (

I

d

–

V

g
s

) are all satisfied. From the thickness of the FE layer in the FE–DE stack, the thickness of the FE layer in the FE–PE–DE stack (PE layer thickness is fixed at 1 nm) is determined where with a thicker FE layer, we obtain similar capacitance from the FE–PE–DE gate stack to that obtained from the FE–DE stack, while meeting all the constraints applied to the FE–DE stack based NCFET, enabling determination of the power supply voltage. Through showing good SSs with reduced output conductance (

g

d
s

), resulting in improved dc gain (

g

m

g

d
s

) and improved linearity parameters (

g

m
2

and

g

m
3

) along with scaling of power supply, an FE–PE–DE stack shows better analog performance, with lower power consumption, compared to an FE–DE stack, for an FDSOI NCFET, at 14 nm gate length.
Vortex-based aggregation of micron particles in liquid using low-frequency vibration of a piezoelectric actuator
Authors: Huang Jun , Yang Jinlan , Liu Jiaming , Zhang Quan , Wang Yuan
Published: August 2022

In this letter, we proposed a control method for microparticles aggregation by utilizing liquid vortices. The piezoelectric cantilever beam, equipped with a probe, caused fluid flow through low-frequency vibration and formed vortexes at the end of the probe to gather microparticles. The particle image velocimetry tests and the flow field simulation results revealed that the forming region of the liquid vortexes was consistent with the microparticle aggregation region. The control method proposed here has the merits of simple structures, no damage to the controlled objects and large control ranges.
Electron–phonon coupling and superconductivity in an alkaline earth hydride CaH6 at high pressures
Authors: Jeon Hyunsoo , Wang Chongze , Liu Shuyuan , Bok Jin Mo , Bang Yunkyu , Cho Jun-Hyung
Published: August 2022

Recently, an alkaline earth hydride CaH6 having a sodalitelike clathrate structure has been experimentally synthesized at megabar pressures with a maximum T
c of 215 K, comparable to that of a rare earth hydride LaH10. Here, based on first-principles calculations, we find that CaH6 exhibits a huge peak in the Eliashberg spectral function α
2
F around the low-frequency region of H-derived phonon modes, in contrast to LaH10 having a widely spreading spectrum of α
2
F over the whole frequencies of H-derived phonon modes. It is revealed that the huge peak of α
2
F in CaH6 is associated with an effective electron–phonon coupling (EPC) between low-frequency optical phonons and hybridized H 1s and Ca 3d states near the Fermi energy. As pressure increases, the strengthened H–H covalent bonding not only induces a hardening of optical phonon modes but also reduces the electron–phonon matrix elements related to the low-frequency optical modes, thereby leading to a lowering of the EPC constant. It is thus demonstrated that H-derived low-frequency phonon modes play an important role in the pressure-induced variation of T
c in CaH6. Furthermore, unlike the presence of two distinct superconducting gaps in LaH10, CaH6 is found to exhibit a single isotropic superconducting gap.
Rational, semi-rational solution and self-consistent sources extension of the variable-coefficient extended modified Kadomtsev-Petviashvili equation
Authors: Hai Rihan , Gegen Hasi
Published: August 2022

In this paper, we apply Hirota bilinear method and determinant technique to derive the Nth-order rational solution expressed compactly in terms of Matsuno determinants for the variable-coefficient extended modified Kadomtsev-Petviashvili (mKP) equation. As a special case, we obtain the M-lump solution expressed in terms of 2M × 2M determinants for the mKPI equation and investigate the dynamical behaviors of 1- and 2-lump solutions. Furthermore, we present the Wronskian and Grammian solution for the variable-coefficient extended mKP equation. Based on the Grammian solution, we construct the line soliton, the line breather and the semi-rational solution on constant and periodic backgrounds for the mKPI equation. Through the asymptotic analysis, we show that the semi-rational solutions describe the fission and fusion of lumps and line solitons. In addition, we construct the variable-coefficient extended mKP equation with self-consistent sources via the source generation procedure and derive its N-soliton solution in the compact form of Grammian and Wronskian.
Investigation of Mn doped BaS for spintronic and thermoelectric applications
Authors: Saleem Sanam , Yaseen Muhammad , Aldaghfag Shatha A , Misbah  , Neffati R
Published: August 2022

In this paper, the first principle investigations are performed to compute the electronic, optical, magnetic and thermoelectric (TE) features of Ba1−xMnxS (x = 6.25%, 12.5% and 25%) alloys by using density functional theory (DFT). The semiconductor behavior of pure BaS and half metallic ferromagnetic (HMF) nature of Ba1−xMnxS (x = 6.25%, 12.5% and 25%) is confirmed by investigating electronic band structure (EBS) with spin-resolved density of states (DOS). The MTotis mainly originated from Mn atom due to the presence of 3d-orbitals. In addition, the optical constants including refractive index, absorption and optical spectrum, reflectivity and dielectric function are analyzed in the span of 0–10 eV. It is found that the studied alloy operate within visible to ultraviolet (UV) energy range. Moreover, the TE properties such as figure of merit (ZT), power factor (PF), electrical and thermal conductivity are also calculated by using the BoltzTrap package. The high values of ZTof Ba1−xMnxS (x = 6.25%, 12.5% and 25%) qualify it for use in TE applications.The outcomes revealed the application of Ba1−xMnxS in spintronic and TE gadgets.
Performance Assessment of the KASI-Deep Rolling Imaging Fast-optics Telescope Pathfinder
Authors: Byun Woowon , Ko Jongwan , Kim Yunjong , Seon Kwang-Il , Chang Seunghyuk , Kim Dohoon , Choi Changsu , Chun Sang-Hyun , Jeon Young-Beom , Kim Jae-Woo , Lee Chung-Uk , Lee Yongseok , Park Hong Soo , Sung Eon-Chang , Yoo Jaewon , Lee Gayoung , Lee Hyoungkwon
Published: August 2022

In a ΛCDM universe, most galaxies evolve by mergers and accretions, leaving faint and/or diffuse structures, such as tidal streams and stellar halos. Although these structures are a good indicator of galaxies’ recent mass assembly history, they have the disadvantage of being difficult to observe due to their low surface brightness (LSB). To recover these LSB features by minimizing the photometric uncertainties introduced by the optical system, we developed a new optimized telescope named K-DRIFT pathfinder, adopting a linear astigmatism free-three mirror system. Thanks to the off-axis design, it is expected to avoid the loss and scattering of light on the optical path within the telescope. To assess the performance of this prototype telescope, we investigate the photometric depth and capability to identify LSB features. We find that the surface brightness limit reaches down to μ

r,1σ
∼ 28.5 mag arcsec−2 in 10″ × 10″ boxes, enabling us to identify a single stellar stream to the east of NGC 5907. We also examine the characteristics of the point-spread function (PSF) and find that the PSF wing reaches a very low level. Still, however, some internal reflections appear within a radius of ∼6′ from the center of sources. Despite a relatively small aperture (0.3 m) and short integration time (2 hr), this result demonstrates that our telescope is highly efficient in LSB detection.
Dual-target Signal Simulation of Very Long baseline Interferometry for Chang’E-5
Authors: Zhao Xu , Zheng Wei-Min , Tong Li , Ma Mao-Li
Published: August 2022

Very long baseline interferometry (VLBI) is an important deep-space tracking technology from radio astronomy. A mission that uses VLBI, China’s lunar sample-return mission Chang’E-5 (CE-5) collects soil samples on the lunar surface, arrives at a rendezvous point, and docks in the lunar orbit through cooperation of the Orbiter and the Ascender. During rendezvous and docking, the Chinese VLBI network (CVN) used same beam VLBI (SBI) to observe two high-velocity probes simultaneously. However, before the launching of the CE-5, CVN lacked the capability to examine dynamic dual-target tracking ability of SBI mode because there were no similar space probes can be used in tests of upgraded VLBI data-processing system. This study proposes a method to simulate VLBI signals and acquire relevant data from the dual-target probe and calibration quasar signals recorded by each station according to the orbits and beacons of probes, station coordinates, etc. The real-time data-processing capability of the system is verified by processing the simulated data during rendezvous and docking. The consistency between simulation and VLBI data-processing was consistent to better than 0.05 ns. This method is universal and can also be used in VLBI simulation and orbital analysis of other deep-space probes.
Impacts of hydrogen annealing on the carrier lifetimes in p-type 4H-SiC after thermal oxidation
Authors: Zhang Ruijun , Hong Rongdun , Han Jingrui , Ting Hungkit , Li Xiguang , Cai Jiafa , Chen Xiaping , Fu Deyi , Lin Dingqu , Zhang Mingkun , Wu Shaoxiong , Zhang Yuning , Wu Zhengyun , Zhang Feng
Published: August 2022

Thermal oxidation and hydrogen annealing were applied on a 100 μm thick Al-doped p-type 4H-SiC epitaxial wafer to modulate the minority carrier lifetime, which was investigated by microwave photoconductive decay (μ-PCD). The minority carrier lifetime decreased after each thermal oxidation. On the contrary, with the hydrogen annealing time increasing to 3 hours, the minority carrier lifetime increased from 1.1 μs (as-grown) to 3.14 μs and then saturated after the annealing time reached 4 hours. The increase of surface roughness from 0.236 nm to 0.316 nm may also be one of the reasons for limiting the further improvement of the minority carrier lifetimes. Moreover, the whole wafer mappings of minority carrier lifetimes before and after hydrogen annealing were measured and discussed. The average minority carrier lifetime was up to 1.94 μs and non-uniformity of carrier lifetime reached 38% after 4-hour hydrogen annealing. The increasing minority carrier lifetimes could be attributed to the double mechanisms of excess carbon atoms diffusion caused by selective etching of Si atoms and passivation of deep-level defects by hydrogen atoms.
Spin- and valley-polarized Goos–Hänchen-like shift in ferromagnetic mass graphene junction with circularly polarized light
Authors: Liu Mei-Rong , Liu Zheng-Fang , Zhang Ruo-Long , Xiao Xian-Bo , Wu Qing-Ping
Published: August 2022

We investigate the band structure and Goos–Hänchen-like shift in ferromagnetic mass graphene junction modulated by the circularly polarized light. It is found that both spin and valley-related energy gaps can be opened by employing the circularly polarized light and the exchange field in mass graphene. The valley-polarized Goos–Hänchen-like shift can be identified in the presence of circularly polarized light, and the spin-polarized Goos–Hänchen-like shift can be realized with introduction of exchange field in mass graphene. Furthermore, the spin and valley polarization-related Goos–Hänchen-like shift can be achieved by combination of circularly polarized light and exchange field in mass graphene. It is hopeful that our work will be more conducive for future applications in graphene polarization transport devices.
Sensitivity and Performance of Dinitroanisole (DNAN) in comparison with TNT
Authors: Hussein Ahmed K. , Elbeih Ahmed , Abdelhafiz Mahmoud , Ahmed Hesham S. , Shalaby Ahmed S. A. , Azazy Ahmed , Saleh Ahmed
Published: August 2022

The constant search for protection the soldier during training and participation in hostilities led us to aspire to develop types of energetic materials of a special nature that qualify them to reach the maximum levels of safety during handling, transportation and uses. In this work, we focus on one of these compounds, which is the main component of the preparation of low sensitive compositions. DNAN is an explosive with low sensitivity. Preparation of DNAN in laboratory scale was performed; explosive characterization was presented. Impact and friction sensitivities of DNAN, heat of combustion and detonation velocity were specified. TGA and DSC were used to investigate the DNAN thermal behavior under specific conditions. It was concluded that sensitivity of DNAN is lower than TNT and the chosen cyclic nitramines. The detonation properties of DNAN are slightly lower than TNT however DNAN is candidate individually or with other explosives to replace TNT in low sensitive compositions to full fill the safety and security manipulation of ammunitions.
Radiological and mineralogical studies on the coastal area between Port-Said and Damietta
Authors: Osman A. M. , Seif R. A. , Attia R. M. , El-Azab A. , Khalifa I. H.
Published: August 2022

The study area constitutes the Eastern flank of the Nile Delta between longitudes, 31° 39’ 9.2″–32° 20’ 9.6″ E and latitudes 31° 37′13″-31° 0′ 54″N, in the shoreline between Port-Said and Damietta. The radioelement contents were measured by gamma-spectrometry using NaI-detector and were studied mineralogically using binuclear and Environmental Scanning Electron microscopes after separation of heavy minerals by heavy liquids. eU, eTh, RaeU and K contents in the studied sediments and sabkhas are ranged from (1-2 ppm), (3-17 ppm), (1-4 ppm) and (0.45-1.25 wt.%) with averages 1.34, 7.18, 1.89 ppm and 0.77 wt.%, respectively. The average of radioelement contents is lower than the international averages, while the average of eTh/eU ratio is higher. High eTh/eU ratio reflects the poor weathering, rapid deposition of these sediments and the dominance of detrital radioactive minerals such as xenotime, monazite and zircon. eU/RaeU ratio average (0.9), is lower than unity and indicate the disequilibrium in the studied coastal sediments, suggesting disequilibrium and uranium migration out. The heavy minerals are represented meanly by magnetite, ilmenite, zircon, rutile, garnet, monazite, pyroxene and amphibole.