bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessing the ideological homogeneity in entrepreneurial finance research by highly cited publications
Authors: Vuong Quan-Hoang , Nguyen Huyen Thanh T. , Pham Thanh-Hang , Ho Manh-Toan , Nguyen Minh-Hoang 
Published: May 2021

AbstractEntrepreneurs play crucial roles in global sustainable development, but limited financial resources constrain their performance and survival rate. Despite the global presence of entrepreneurship, the literature of entrepreneurial finance is suspected to be Western ideologically homogenous. Thus, this study aims at examining this phenomenon by employing the mindsponge mechanism and bibliometric analyses. 412 highly cited publications extracted from the Web of Science database are analyzed to find Western ideological dominance and low tolerance towards heterogeneity in entrepreneurial finance’s core ideologies. The dominance and low tolerance are consistent across author level, institution level, and country level, revealing strong evidence for the existence of Western ideological homogeneity. We recommend editors, reviewers, and authors diversify research topics proactively and enhance knowledge exchange to avoid shortfalls of ideological homogeneity. Moreover, the synthesis of the mindsponge mechanism and bibliometric analyses are suggested as a possible way to evaluate the state of ideological diversity in other scientific disciplines.
Dual feedback based bipolar current source with high stability for driving voice coil motors in wide temperature ranges
Authors: Wang Nong , Fang Huachao , Lei Haijun , Ye Dongdong 
Published: May 2021

Bipolar current sources with a stability better than 0.1% in the temperature range of −30 to +70 °C are demanded for driving voice coil motors applied in a new ultra-quiet satellite platform, but almost none of the existing designs satisfy the harsh requirements. This paper presents a possible solution, which is essentially a floating-load, bipolar current source circuit with a dual feedback path. The key circuit is a composite amplifier (co-amp) composed of a high precision amplifier for error correction and a high power amplifier for load driving. The first feedback path comprises a specially designed four-wire current-sense resistor for current-to-voltage conversion and a discrete instrumentation amplifier for amplifying the converted voltage and closing the loop. The second feedback path is a proposed compensation network for loop stability. Error budgets for evaluating current stability and choosing key components of the circuit are comprehensively studied based on a derived rigorous current equation. Loop-stability problems attributable to the inductive load and the high open-loop gain of the co-amp are analyzed, and the proposed dual feedback compensation method is verified by theory, simulation, and measurement. All these contributions are demonstrated by three implemented prototypes with an output of up to ±2 A. The measured results agree well with theoretical predictions. The best and the worst stability performances of the three prototypes at +2 and −2 A are, respectively, 394 and 986 ppm in the temperature range of −30 to +70 °C, which are close to the theoretical value of 776 ppm.
Upgrade of far infrared three-wave polarimeter–interferometer system on Joint-TEXT
Authors: Yang Qinglong , Gao Li , Shi Peng , Zhou Yinan , Wang Yuhan , Zhou Chengxi 
Published: May 2021

The far infrared polarimeter–interferometer system (POLARIS) on the Joint-TEXT has been upgraded recently. A new support structure has been applied to the mixer array of the POLARIS for adjusting the position of the mixers precisely. Five detection chords have been added to the system on the low field side by optimizing the utilization efficiency of the laser beams on both sides of the beam splitting grid. The spatial resolution can be improved from 3 to 1.5 cm. A better measurement on plasma electron density and current density has been obtained after the system is upgraded. The initial experimental result will be introduced along with the upgrade details.
Bioenergetics of blue swimmer crab (
Authors: Junk Emily J. , Smith James A. , Suthers Iain M. , Taylor Matthew D. 
Published: May 2021

Stock enhancement is a contemporary management method employed to support fisheries productivity. Blue swimmer crab (Portunus armatus) is a widely distributed species that has been identified as a candidate for stock enhancement; however, the release strategy and ecological impact of releases have not yet been assessed. Here, we (1) quantify the bioenergetics of blue swimmer crab, (2) estimate consumption rates, and (3) develop these relationships in a stocking model to assess appropriate release densities and associated trophic impacts. Static respirometry was used to measure the resting metabolic rate (RMR) of blue swimmer crab at three temperatures (19, 24, and 29°C). RMR was found to increase with temperature (Q10 = 2.32), and was 73% higher when crabs were at a premoult or moulting stage. Parameters derived from respirometry experiments were applied to estimate blue swimmer crab stocking density in a south-eastern Australian estuary, by adapting an existing production-based simulation model. The model estimated a median stocking density of ~1.2 crabs per 100 m2. A sensitivity analysis showed that the growth rate was the most influential parameter in this model, showing the importance of this parameter when assessing stocking scenarios.
HBD1 protein with a tandem repeat of two HMG-box domains is a DNA clip to organize chloroplast nucleoids in
Chlamydomonas reinhardtii
Authors: Takusagawa Mari , Kobayashi Yusuke , Fukao Yoichiro , Hidaka Kumi , Endo Masayuki , Sugiyama Hiroshi , Hamaji Takashi , Kato Yoshinobu , Miyakawa Isamu , Misumi Osami , Shikanai Toshiharu , Nishimura Yoshiki 
Published: May 2021

Significance
Compaction of bulky DNA is a universal issue for all DNA-based life forms. Both chloroplasts and mitochondria maintain their own multicopy genomes organized as nucleoids, but the mechanism of DNA compaction remains obscure. Here, we discovered a chloroplast nucleoid protein (HBD1) that is highly similar to major mitochondrial nucleoid proteins transcription factor A, mitochondrial (TFAM), and ARS binding factor 2 protein (Abf2p) in terms of possessing two DNA-binding high mobility group box (HMG-box) domains. Our analyses of HBD1 based on DNA origami/atomic force microscopy showed that HBD1 is capable of compacting DNA by introducing U-turns and cross-strand bridges with the two HMG-box domains, indicating that proteins with two HMG-box domains could compact DNA in both mitochondrial and chloroplast nucleoids.
Peptidic boronic acids are potent cell-permeable inhibitors of the malaria parasite egress serine protease SUB1
Authors: Lidumniece Elina , Withers-Martinez Chrislaine , Hackett Fiona , Collins Christine R. , Perrin Abigail J. , Koussis Konstantinos , Bisson Claudine , Blackman Michael J. , Jirgensons Aigars 
Published: May 2021

Significance
Malaria remains a major global health threat. In the face of increasing resistance to available chemotherapeutics, new antimalarial drugs with new modes of action are urgently needed. The causative agent of malaria is a single-celled parasite that invades and replicates within red blood cells. Escape from the red cell, a process called egress, involves a proteolytic pathway triggered by an essential parasite subtilisin-like serine protease called SUB1. Here, we describe the development and rational optimization of a potent, membrane-permeable substrate-based boronic acid compounds that block egress and parasite proliferation by direct inhibition of SUB1 activity. The compounds could form the basis of a new type of antimalarial medicine that would both protect against infection and treat disease.
The cytokine FAM3B/PANDER is an FGFR ligand that promotes posterior development in
Xenopus
Authors: Zhang Fangfang , Zhu Xuechen , Wang Pan , He Qing , Huang Huimei , Zheng Tianrui , Li Yongyu , Jia Hong , Xu Linping , Zhao Huaxiang , Colozza Gabriele , Tao Qinghua , De Robertis Edward M. , Ding Yi 
Published: May 2021

Significance
How distinct body regions form along the anterior–posterior axis in vertebrate embryos is a fascinating and incompletely understood developmental process. FAM3B/PANDER is a secreted protein involved in glucose metabolism and type 2 diabetes pathogenesis in mammals, but its receptor has been unknown. Here, we report that FAM3B binds to transmembrane fibroblast growth factor receptors (FGFRs) and activates their downstream signaling pathway. In frog embryos, gain-of-function of FAM3B impairs head development and induces ectopic tail-like structures, whereas loss-of-function of FAM3B promotes head development. FGFR is required downstream of FAM3B for head-to-tail patterning. Our results reveal that FAM3B functions by activating the FGFR pathway in frog embryos and mammalian cells and shed light on its possible role in human diseases.
Determination of effective magnon mass of neodymium magnet by temperature dependence of spontaneous magnetization
Authors: Mishonov Todor M , Andreoni Matteo , Mihaylova Nelly Zh , Varonov Albert M 
Published: May 2021

Abstract
The effective mass of a magnon in a neodymium magnet is evaluated using Bloch temperature dependence of spontaneous magnetization. We use the Hall effect magnetometer and thermo-couple thermometer for measurement of the temperature of the water in which the encapsulated commercial magnet is immersed. The experiment can be repeated in every school and methodological remarks for experimental data processing are given with great detail and attention. The purpose of the paper is to illustrate the simple relation between the quantum spectrum of magnons and the easily measured magnetic field of a permanent magnet.
Heating ability modulation by clustering of magnetic particles for precision therapy and diagnosis
Authors: Barrera Gabriele , Allia Paolo , Tiberto Paola 
Published: May 2021

Abstract
Magnetic and thermal properties of clustered magnetite nanoparticles submitted to a high-frequency magnetic field is studied by means of rate equations. A simple model of large particle clusters (containing more than one hundred individual particles) is introduced. Dipolar interactions among clustered particles markedly modify shape and area of the hysteresis loops in a way critically dependent on particle size and cluster dimensions, thereby modulating the power released as heat to a host medium. For monodisperse and polydisperse systems, particle clustering can lead to either a significant enhancement or a definite reduction of the released power; in particular cases the same particles can produce opposite effects in dependence of the dimensions of the clusters. Modulation by clustering of the heating ability of magnetic nanoparticles has impact on applications requiring optimization and accurate control of temperature in the host medium, such as magnetic hyperthermia for precision therapy or fluid flow management, and advanced diagnostics involving magnetic tracers.
Ultrafast carrier response of CH3NH3PbI3/MoO3/graphene heterostructure for terahertz waves
Authors: Li Xiang , Yang Tingting , Liu Yangqi , Liu Jingyu , Liu Bin , Lv Longfeng , Hou Yanbing , Zhang Yan , Shen Jingling , Zhang Bo 
Published: May 2021

Abstract
Ultrafast carrier response of perovskite/MoO3/graphene heterostructure was investigated by optical-pump terahertz (THz) probe spectroscopy. The high work function of MoO3 changes the tunable graphene Fermi level via hole doping. Compared with monolayer graphene, it generates a more negative photoconductivity and enables ultra-fast THz functional manipulation. The subsequent THz signal decrease is related to hot-carrier cooling and the carrier concentration contributed by the CH3NH3PbI3 layer. The charge transfer and recombination reduce the positive conductance of the hybrid structure relative to that of neat CH3NH3PbI3.
Magnetic anisotropy and exchange interactions of two-dimensional FePS3, NiPS3 and MnPS3 from first principles calculations
Authors: Olsen Thomas 
Published: May 2021

Abstract
The van der Waals bonded transition metal phosphorous trichalcogenides FePS3, NiPS3 and MnPS3 have recently attracted renewed attention due to the possibility of exfoliating them into their monolayers. Although the three compounds have similar electronic structure, the magnetic structure differs due to subtle differences in exchange and magnetic anisotropy and the materials thus comprise a unique playground for studying different aspects of magnetism in 2D. Here we calculate the exchange and anisotropy parameters of the three materials from first principles paying special attention to the choice of Hubbard parameter U. We find a strong dependence of the choice of U and show that the calculated Néel temperature of FePS3 varies by an order of magnitude over commonly applied values of U for the Fe d-orbitals. The results are compared with parameters fitted to experimental spin-wave spectra of the bulk materials and we find excellent agreement between the exchange constants when a proper value of U is chosen. However, the anisotropy parameters are severely underestimated by density functional theory and we discuss possible origins of this discrepancy.
Ns-pulsewidth pulsed power supply by regulating electrical parameters for AFM nano EDM of nm-removal-resolution
Authors: Quan Ran , Tong Hao , Li Yong 
Published: May 2021

Abstract
Nano electro discharge machining (nano EDM), as a frontier processing method in the research stage of exploration, has an important application prospect in the machining of metal and alloy materials for achieving nanoscale removal resolution. A pulsed power supply used in nano EDM is expected to limit a single pulse energy to nJ order of magnitude for improving the removal resolution of single pulsed discharge even to nanoscale. One developing direction is to decrease pulsewidth of the pulsed power supply. Conventional pulsed power supplies hardly output a single pulse and continuous pulses with nanosecond (ns) pulsewidth, resulting in too large single pulsed energy of μJ order of magnitude usually. In this research, a novel pulsed power supply is designed for realizing the ns-pulsewidth with controllable pulsewidth and peak voltage. The key novelty lies in a cascaded circuit with two triodes working in the state of ultra-fast avalanche conduction, where pF capacitors are applied to adjust the pulsewidth and pulsed energy precisely. Performance tests verified that a single pulse of 5 ns pulsewidth or continuous pulses up to 9 MHz can be outputted. Furthermore, nano EDM experiments of single pulsed discharge are carried out under the conditions of nanometer (nm) discharge gap and nm-tip tool electrode based on an atomic force microscope (AFM) system. The special results are achieved: a single pulsed energy can reach down to 1.75 nJ by outputting a pulsewidth of 10 ns, and a nano-EDM crater is only about 182 nm in diameter with regular shape and little recasting. Those results verify the possibility of AFM-tip-based nano EDM for machining nanostructures.
Theory of stochastic diffusion in Wendelstein-line stellarators in the presence of radial electric field
Authors: Tykhyy A V , Kolesnichenko Ya I 
Published: May 2021

Abstract
In optimized stellarators of the Wendelstein line prompt losses of fast ions in superbanana orbits are reduced through a modification of the magnetic configuration by high β (ratio of the plasma pressure to the magnetic field pressure), so that most contours of the longitudinal adiabatic invariant

J
∥

of locally trapped particles are closed inside the plasma volume. However, magnetic drift leads to the transformation of some of these particles into the locally passing ones and vice versa. Orbit transformation upon crossing the separatrix between locally trapped and locally passing states is accompanied by jumps in

J
∥

that lead to collisionless stochastic diffusion (SD), which was shown to be an important mechanism of the loss of energetic ions in the optimized Wendelstein-line stellarators (C D Beidler et al 2001 Phys. Plasmas
8 2731). The theory of SD that took into account the phase space asymmetry between locally passing particles with opposite signs of

v
∥

was developed in (A V Tykhyy 2018 Ukr. J. Phys.
63(6) 495). This work extends that theory to consider the effect of radial electric field E

r
on SD. It is found that negative E

r
of such magnitudes as those observed in W7-X and predicted in Helias reactor can mitigate SD losses from the plasma core of NBI ions in W7-X and α-particles in Helias. This loss mitigation occurs because added

E

×

B

drift increases the range of pitch angles for which separatrices are closed inside the plasma volume, even while it increases the SD coefficient. This means that E

r
can be used in addition to magnetic configuration changes for both loss mitigation and energy deposition profile optimization.
Effect of buffer layer on thermal recovery of superconducting nanowire single-photon detector
Authors: Xu T , Chen S , Shi H K , Jia X Q , Zhang L B , Zhao Q Y , Tu X C , Kang L , Chen J , Wu P H 
Published: May 2021

Abstract
Superconducting nanowire single-photon detectors (SNSPDs) wherein ultrathin films are fabricated on Si substrates are greatly affected by lattice mismatch between the thin film and the substrate. A buffer layer can be used to reduce such lattice mismatch or optimize the strain in the film, thereby improving device performance. We prepared and optimized Nb5N6 as a buffer layer and found that it considerably improved the properties of NbN films on Si substrates. The zero-resistance critical temperature (T
C0) of a 3 nm thick NbN film with a 20 nm thick buffer layer was 10.3 K. SNSPDs with Nb5N6-buffered NbN films were fabricated and compared with normal devices; the fabricated devices had high hysteresis current and low timing jitter. Furthermore, we investigated the thermal diffusion process of the device based on the hysteresis current and hotspot relaxation time and found that Nb5N6 buffer layers enhance the thermal coupling between the superconducting film and substrates. The relaxation time of buffered SNSPD was 14.2 ps, which was shorter than that of nonbuffered SNSPD by 17.8 ps. These effects explain the performance improvement observed in the case of the buffered devices.
Single ion thermal wave packet analyzed via time-of-flight detection
Authors: Stopp Felix , Ortiz-Gutiérrez Luis , Lehec Henri , Schmidt-Kaler Ferdinand 
Published: May 2021

Abstract
A single 40Ca ion is confined in the harmonic potential of a Paul trap and cooled to a temperature of a few mK, with a wave packet of sub-μm spatial and sub-m s−1 velocity uncertainty. Deterministically extracted from the Paul trap, the single ion is propagating over a distance of 0.27 m and detected. By engineering the ion extraction process on the initial wave packet, theoretically modeling the ion trajectories, and studying experimentally the time-of-flight distribution, we directly infer the state of the previously trapped ion. This analysis allows for accurate remote sensing of the previous motional excitation in the trap potential, both coherently or incoherently. Our method paves a way to extract, manipulate and design quantum wave packets also outside of the Paul trap.
High-fidelity formation of deeply bound ultracold molecules via non-Hermitian shortcut to adiabaticity
Authors: Zhang Jia-Hui , Dou Fu-Quan 
Published: May 2021

Abstract
Stimulated Raman adiabatic passage allows robust transfer between two ends of a three-state quantum system and has been employed to transfer weakly bound Feshbach molecules into their deeply bound rovibrational ground state. However, the efficient transfer remains to be explored. Here we propose a possible alternative route, based on a recently developed non-Hermitian shortcut to adiabaticity method. It is able to realize single-step transfer efficiencies up to 100% even in the presence of a decaying excited level, surpassing all the previous methods. We also prove that our scheme is robust against the external field parameter fluctuations and is expected to be applicable for abundant molecular species.
Preparation of one 87Rb and one 133Cs atom in a single optical tweezer
Authors: Brooks R V , Spence S , Guttridge A , Alampounti A , Rakonjac A , McArd L A , Hutson Jeremy M , Cornish Simon L 
Published: May 2021

Abstract
We report the preparation of exactly one 87Rb atom and one 133Cs atom in the same optical tweezer as the essential first step towards the construction of a tweezer array of individually trapped 87Rb133Cs molecules. Through careful selection of the tweezer wavelengths, we show how to engineer species-selective trapping potentials suitable for high-fidelity preparation of Rb + Cs atom pairs. Using a wavelength of 814 nm to trap Rb and 938 nm to trap Cs, we achieve loading probabilities of 0.508(6) for Rb and 0.547(6) for Cs using standard red-detuned molasses cooling. Loading the traps sequentially yields exactly one Rb and one Cs atom in 28.4(6)% of experimental runs. Using a combination of an acousto-optic deflector and a piezo-controlled mirror to control the relative position of the tweezers, we merge the two tweezers, retaining the atom pair with a probability of

0.9

9

(

−
0.02

)

(

+
0.01

)

. We use this capability to study hyperfine-state-dependent collisions of Rb and Cs in the combined tweezer and compare the measured two-body loss rates with coupled-channel quantum scattering calculations.
Soliton solutions of a (3+1)-dimensional nonlinear evolution equation for modeling the dynamics of ocean waves
Authors: Jadaun Vishakha 
Published: May 2021

Abstract
The (3+1)-dimensional generalized nonlinear evolution equation (gNLEE) is analyzed to model oceanic waves. One-parameter Lie group of infinitesimal transformations method is applied to the (3+1)-dimensional gNLEE. Invariant condition satisfying fourth-order prolongation and generators of infinitesimal transformations are found. The (3+1)-dimensional gNLEE is reduced to ordinary differential equations (ODEs) for the different vector fields obtained by the Lie group of transformations method. The key finding for the study of breathers and solitons that account for waveform perturbation and dispersion, including nonlinear impacts, is elaborated. Discussion of wave-wave interactions, using graphic interpretation, to explain the formation of directional large-amplitude rogue waves is explained. It is found that the scale in the crest direction becomes finite as the coherence becomes diagonal. In addition, unstable wave fields, beam dynamics, and interactions among solitons are seen.