bluuebunny/crossref_metadata_2025_split huggingface dataset:
Discovering planets with PLATO: Comparison of algorithms for stellar activity filtering
Authors: Canocchi G. , Malavolta L. , Pagano I. , Barragán O. , Piotto G. , Aigrain S. , Desidera S. , Grziwa S. , Cabrera J. , Rauer H. 
Published: March 2023

Context. To date, stellar activity is one of the main limitations in detecting small exoplanets via the transit photometry technique. Since this activity is enhanced in young stars, traditional filtering algorithms may severely underperform in attempting to detect such exoplanets, with shallow transits often obscured by the photometric modulation of the light curve.
Aims. This paper aims to compare the relative performances of four algorithms developed by independent research groups specifically for the filtering of activity in the light curves of young active stars, prior to the search for planetary transit signals: Notch and LOCoR (N&L), Young Stars Detrending (YSD), K2 Systematics Correction (K2SC), and VARLET. Our comparison also includes the two best-performing algorithms implemented in the Wōtan package: Tukey’s biweight and Huber spline algorithms.
Methods. For this purpose, we performed a series of injection-retrieval tests of planetary transits of different types, from Jupiter down to Earth-sized planets, moving both on circular and eccentric orbits. These experiments were carried out over a set of 100 realistically simulated light curves of both quiet and active solar-like stars (i.e., F and G types) that will be observed by the ESA Planetary Transits and Oscillations of stars (PLATO) space telescope, starting 2026.
Results. From the experiments for transit detections, we found that N&L is the best choice in many cases, since it misses the lowest number of transits. However, this algorithm is shown to underperform when the planetary orbital period closely matches the stellar rotation period, especially in the case of small planets for which the biweight and VARLET algorithms work better. Moreover, for light curves with a large number of data-points, the combined results of two algorithms, YSD and Huber spline, yield the highest recovery percentage. Filtering algorithms allow us to obtain a very precise estimate of the orbital period and the mid-transit time of the detected planets, while the planet-to-star radius is underestimated most of the time, especially in cases of grazing transits or eccentric orbits. A refined filtering that takes into account the presence of the planet is thus compulsory for proper planetary characterization analyses.
Highlights from the NA61/SHINE
Authors: Pulawski Szymon 
Published: March 2023

NA61/SHINE is a multipurpose fixed-target facility at the CERN Super Proton Synchrotron. The main goals of the NA61/SHINE stronginteractions program are to discover the critical point of strongly interacting matter as well as to determine the properties of produced particles relevant for the study of the onset of deconfinement - the transition between the state of hadronic matter and the quark-gluon plasma. An analysis of hadron production properties is performed in nucleus-nucleus, proton-proton, and proton-nucleus interactions as a function of collision energy and size of the colliding nuclei to achieve these goals.
The selected NA61/SHINE results from this program are presented. In particular, the latest results from different reactions p+p, Be+Be, Ar+Sc, and Pb+Pb on hadron spectra and fluctuations are discussed. The NA61/SHINE results are compared with worldwide experiments and predictions from various theoretical models, like EPOS, PHSD, UrQMD, and others.
(Anti)nucleosynthesis in heavy-ion collisions and (anti)nuclei as "baryonmeter" of the collision
Authors: Ciacco Mario 
Published: March 2023

The production mechanism of light (anti)nuclei in heavy-ion collisions has been extensively studied experimentally and theoretically. Two competing (anti)nucleosynthesis models are typically used to describe light (anti)nuclei yields and their ratios to other hadrons in heavy-ion collisions: the statistical hadronization model (SHM) and the nucleon coalescence model. The possibility to distinguish these phenomenological models calls for new experimental observables.
Given their large baryon number, light (anti)nuclei have a high sensitivity to the baryon chemical potential (μB) of the system created in the collision. In this talk, the first measurement of event-by-event antideuteron number fluctuations in heavy-ion collisions is presented and compared with expectations of the SHM and coalescence model. In addition, the antinuclei-to-nuclei ratios are used to obtain a measurement of μB in heavy-ion collisions with unprecedented precision.
Red-Shifting Blue Light Photoredox Catalysis for Organic Synthesis: A Graphical Review
Authors: Rovis Tomislav , Beck Logan R. , Xie Katherine A. , Goldschmid Samantha L. , Kariofillis Stavros K. , Joe Candice L. , Sherwood Trevor C. , Sezen-Edmonds Melda 
Published: March 2023

AbstractPhotoredox catalysis has revolutionized synthetic chemistry in recent decades. However, the field has traditionally used high-energy blue/ultraviolet light to activate chromophores. High-energy irradiation is associated with several drawbacks (e.g., activation of sensitive functional groups, undesired metal-ligand homolysis, background activation of molecules, and poor penetration), which has led researchers to develop alternative systems with lower energy deep red (DR) or near-infrared (NIR) light. This graphical review provides a concise overview of photophysical principles relevant to photoredox catalysis. Several applications that benefit from low-energy irradiation, such as large-scale batch reactions, photodynamic therapy, biological labeling, and multi-photon excitation are reviewed.
Koser’s Reagent Mediated Oxidation of Aldoximes: Synthesis of Isoxazolines by 1,3-Dipolar Cycloadditions
Authors: Peddinti Rama Krishna , Budhwan Rajnish , Rawat Megha 
Published: March 2023

AbstractA metal- and base-free, robust, and convenient approach for the synthesis of isoxazoline derivatives is reported. This protocol involves 1,3-dipolar cycloaddition between in situ generated nitrile oxides from the corresponding aldoximes using [hydroxy(tosyloxy)iodo]benzene (HTIB, Koser’s reagent) and maleimides, styrene and acrylonitrile. The described methodology is very attractive as it is operationally simple, has broad scope, and does not require any base, metal, or other additives.
A Rare Case of Extensor Digitorum Communis Rupture Due to Pancarpal Arthritis
Authors: Shiraz Salman , Bhandari Laxminarayan 
Published: March 2023

AbstractWe report the case of a 71-year-old man who presented to our clinic with extensor digitorum communis (EDC) tendon rupture associated with pancarpal arthritis. He presented with a history of prolonged chainsaw usage. Later that day upon waking up, he noticed an inability to extend his small and ring fingers. On examination, the EDC of the ring and small fingers showed zero power. Radiographs of the wrist joint showed pancarpal arthritis with a dorsally displaced lunate along with distal radio-ulnar joint (DRUJ) osteoarthritis (OA). During surgery, a sharp posterior lunate prominence was noticed to be the cause of the attrition and rupture of EDC. The DRUJ surface was relatively smooth. Proximal row carpectomy and transfer of extensor indicis proprius (EIP) to EDC reverse end-to-side were done. Postoperatively, the patient gained full extension. There are no other similar cases reported in the literature.
A South Asian neutral power in the United Nations: India’s peacekeeping mission on the Korean peninsula (1947–1955)
Authors: Kim David W. 
Published: March 2023

AbstractThe end of World War II (1939–1545) by Germany’s (May 8) and Japan’s surrender (August 15) brought a major socio-political transformation in the colonialised nations of Asia. The independence of the Korean Peninsula from the Japanese imperialism was not smoothly implemented for a peaceful settlement. Rather, the ideological camps of communism (=socialism) and democracy (=capitalism) dominated in the region, which became the hub of the Cold War in the late 1940s and the 1950s. The local citizens confronted the political conflict for the unified Korea. The US allied with the UN, turning against North Korea and its socialist allies. Meantime, India emerged in the UN for the Korean issues. Then, how did India, the new international leader, involve the process of the post-colonial unification (1948–1950) with the major powers (the US, the Soviet Union, China and the UK)? What about the position of India during the Korean War (1950–53)? How can one interpret India’s policy on the POW repatriation issue (1953–1955)? This paper explores the non-military initiatives of the South Asian country as a ‘neutral power’ through the cases of India’s authority within the United Nations (Temporary) Commission on Korea (UN(T)COK), the 60th Parachute Field Ambulance (PFA), and Neutral Nations Repatriation Commission (NNRC) and Neutral Nations Supervisory Commission (NNSC). This paper argues that the soft diplomacy of India strategically established the foundation of a peacekeeping mission on the Korean Peninsula (1947–1955) even though the politico-historical relationship with the Soviet Union and China frequently caused serious misunderstands for South Korea.
After all, India was not even three years old at the outbreak of the conflict (Korean War). It also had extremely difficult domestic problems, a hostile Pakistan on its flanks and the People’s Republic of China (PRC)—a potential threat … Still, India was the largest and most vocal Third World country not embedded in the emerging Cold War alliance structure, with Nehru the champion of anti-imperialism and neutralism (Barnes, 2013b, p. 265)
Magnetic and transport properties of electron doped EuTiO3 thin films with La3+ (4f) or Gd3+ (4f7) donors grown by gas source molecular beam epitaxy
Authors: Takahara N. , Takahashi K. S. , Maruhashi K. , Tokura Y. , Kawasaki M. 
Published: March 2023

EuTiO3 (ETO) is a unique magnetic semiconductor with a large localized magnetic moment of Eu2+ (4f 7). By the doping of high-mobility electrons in the Ti 3d conduction band, peculiar magnetotransport properties such as the unconventional anomalous Hall effect (AHE) due to Berry curvature in momentum space, as well as the Shubnikov–de Haas oscillations of spin polarized electrons, have been observed. In this study, we have examined the physical properties of high quality ETO films with La3+ (4f0) or Gd3+ (4f7) donors (ELTO or EGTO) grown on nearly lattice matched SrTiO3 substrates with a gas source molecular beam epitaxy. We find that the anti-ferromagnetic ordering of ELTO is destabilized by the vacancy of the magnetic moment on the La-site for ELTO. The maximum electron mobility for ELTO (&lt;3200 cm2 V−1 s−1) is larger than that of EGTO (&lt;1500 cm2 V−1 s−1), keeping the metallic state at very diluted doping. The AHE changes its sign with shifting the Fermi level position across the Weyl nodes, as seen previously for compressively strained ELTO films, but the critical electron density is much lower, which can be explained by the absence of additional crystal-field splitting in the lattice matched system. These unveiled transport properties provide deeper understanding of the transport phenomena related to the topology of the band structure in high-mobility, magnetic oxide semiconductors.
Significantly reinforced thermoelectric performance in the novel 1T-Au6Se2 monolayer
Authors: Yue Jincheng , Zhang Ao , Li Junda , Liu Yanhui , Cui Tian 
Published: March 2023

Ultra-low lattice thermal conductivity has long been a requirement for the high thermoelectric properties of materials. In this work, the novel 1T-Au6Se2 monolayer was obtained by introducing Au6 clusters into the selenide monolayer, and its electrical and thermal transport characteristics are investigated using first-principles computations supplemented with semi-classical Boltzmann transport theory. The calculation shows that the 1T-Au6Se2 monolayer exhibits ultra-low lattice thermal conductivity and excellent thermoelectric properties owing to its low phonon frequency, group velocity, and extremely strong anharmonicity. Based on strain engineering from 0% to 2%, the lattice thermal conductivity further reduces by restricting the thermal transport on the premise of maintaining outstanding electrical transport properties in the p-type doped system. Thence, the value of ZT for the p-type system increases nearly by 70% compared with the non-stressed state at 700 K. Our investigation indicates the ultra-low thermal conductivity and high ZT of the 1T-Au6Se2 monolayer that might be prepared in the lab, providing new insights into enhancing the thermoelectric performance of the material in the future.
Effect of decoherence for gate operations on a superconducting bosonic qubit
Authors: Mizuno Kosuke , Takenaka Takaaki , Mahboob Imran , Saito Shiro 
Published: March 2023

Abstract
High-quality-factor 3D cavities in superconducting circuits are ideal candidates for bosonic logical qubits as their fidelity is limited only by the low photon loss rate. However, the transmon qubits that are used to manipulate bosonic qubits result in the emergence of additional relaxation and dephasing channels. In this work, a numerical study is performed to elucidate the effect of the various loss channels on the performance of logical gates on a bosonic qubit. A gate error model is developed that encapsulates the loss mechanisms for arbitrary gate operations and predicts experimentally achievable gate errors for bosonic qubits. The insights gleaned from this study into loss mechanisms suggest more efficient optimization algorithms that could reduce gate errors on bosonic qubits.
Quantum heat engine with long-range advantages
Authors: Solfanelli Andrea , Giachetti Guido , Campisi Michele , Ruffo Stefano , Defenu Nicolò 
Published: March 2023

Abstract
Long-range interacting quantum devices provides a promising route for quantum technology applications. Here, the presence of long-range interactions is shown to enhance the performances of a quantum heat engine featuring a many-body working substance. We focus on the paradigmatic example of a Kitaev chain undergoing a quantum Otto cycle and show that a substantial thermodynamic advantage may be achieved as the range of the interactions among its constituents increases. The advantage is most significant for the realistic situation of a finite time cycle: the presence of long-range interactions reduces the non-adiabatic energy losses, by suppressing the detrimental effects of dynamically generated excitations. This effect allows mitigating the trade-off between power and efficiency, paving the way for a wide range of experimental and technological applications.
Study on Secondary Electron Yield of Dielectric Materials
Authors: Huang Ling , Wang Qian 
Published: March 2023

Abstract
The secondary electron emission coefficient of dielectric materials will have an important impact on the performance of electronic devices and equipment. In order to understand the secondary electron emission coefficient of common dielectric materials, the collection electrode negative bias method is introduced in this study. First, the measurement method of secondary electron emission coefficient of dielectric materials is analyzed, and 20 common dielectric materials are introduced, the secondary electron emission coefficients of 20 kinds of common dielectric materials were measured and analyzed, which laid the foundation for the subsequent application of dielectric materials. The results show that among common dielectric materials, the secondary electron emission coefficients of alumina, silica and muscovite are relatively high, while those of polyimide, polycarbonate and polyester are relatively low; The surface roughness of the material will also have an important impact on the secondary electron emission coefficient. With the gradual increase of the surface roughness of the material, the undulation of the material surface will have a shielding effect and absorption effect on the secondary electrons, which will eventually lead to the gradual reduction of the secondary electron emission coefficient of the material. The research results can provide data support for the establishment of the database of secondary electron emission characteristics of common dielectric materials.
Research on Pulse Power Wireless Communication Network Based on LoRa Technology
Authors: Wang Yi , Su Zizhou , Huang Kai , Yan Jie , Wang Sui , Ye Weisheng 
Published: March 2023

Abstract
In this paper, the engineering of pulse power supply in electromagnetic launch technology is studied in depth, the advantages and disadvantages of optical fiber communication transmission currently used are analyzed, and then the requirements for data transmission of pulse power supply system are summarized, and several commonly used wireless communication technologies are analyzed and compared, such as ZigBee, LoRa, SigFox, NB IoT, 5G, etc. According to the comprehensive comparison of these technologies in transmission distance, rate, bandwidth, security, time delay, self built network and other aspects, the scheme of using LoRa wireless communication technology to replace optical fiber transmission is finally determined, and the LoRa wireless communication network construction, controller hardware circuit design, module software program, data transmission communication protocol, data encryption, data storage and other contents in the scheme are further designed in detail, It also predicts the further research and development of LoRa wireless communication technology in pulse power supply.
Research of a High Voltage Generator for Medical Diagnostic X-ray Equipment
Authors: Sun Jilai , Yu Shufei , Wang Lu , Cui Jianguo 
Published: March 2023

Abstract
A kind of designing scheme of high voltage generator for medical diagnostic X-ray equipment is proposed. A X-ray HV generator, which has output voltage from 60kV to 160kV and tube current from 1mA to 10mA, is developed successfully by applying the technology of LC series resonant soft-switching, high voltage doubling and rectifying, full bridge inverter and pulse width modulation. The topologic structure and simulating result are listed detailed, including high frequency inverter circuit, doubling and rectifying circuit and the controlling system. At last, the experimental data and waveform of the X-ray high voltage generator are presented, verifying the validity of the design scheme.
Simulation Research on Trajectory Planning of Double-arm Cooperative Live Working Robot for Transmission Lines
Authors: Quan Wusheng , Zou Dehua , Xi Chongyu , Qiao Minmin , Liu Lanlan , Jiang Wei 
Published: March 2023

Abstract
High-voltage transmission lines are the main artery for power transmission, dampers, insulators and drainage plates are typical hardware on transmission lines. The harsh service environment will damage transmission line hardware and seriously affect the safety and stable operation of transmission lines. The electrical power robots are used to carry out transmission line maintenance operations. It is of great significance to improve work safety and work efficiency. Through the analysis of typical hardware maintenance tasks, it can be seen that most of the operations require the coordinated movement of the double arms to complete. Based on this, this paper proposes a basic configuration of a double-arm collaborative robot. At the same time, based on the polynomial interpolation theory, the robot arm motion trajectory planning is carried out, and then the trajectory planning simulation model of the robot manipulator in the MATLAB environment has been established and the trajectory simulation research has been carried out on the robot manipulator to reconstruct the end tool and the manipulator to carry the end tool to the work point. The simulation results show that compared with the single-arm operation mode, the cooperative operation of the double arms can not only improve the operation efficiency, but also complete some tasks that cannot be completed by the single-arm operation, the research in this paper has important theoretical significance and practical application value for the intelligent operation and maintenance management of transmission network.
A Data-Driven Method for Power System Emergency Control to Improve Short-Term Voltage Stability
Authors: Li Meng , Lin Zhangsui , Lin Yi , Tang Yuchen , Jiang Changxu , Liu Chenxi , Shao Zhenguo 
Published: March 2023

Abstract
The power system contains a variety of uncertainties of different types of sources and loads, as well as random contingencies. Under these uncertainties and rapidly changing operating conditions, traditional rule-based methods cannot dynamically handle short-term voltage instability. To alleviate this situation, this paper proposes a novel power system emergency control scheme using a data-driven method, which combines edge-conditioned graph convolutional networks and deep reinforcement learning. The edge-conditioned graph convolutional network is utilized to extract the characteristics from not only power system nodes but also transmission lines. Deep reinforcement learning is introduced to perform load shedding actions, so as to guarantee the safety and stability of the electric power system. The IEEE 39-bus network is utilized for simulations to validate the effectiveness of the proposed data-driven method. The outcomes demonstrate the proposed method can generate a superior strategy in a number of the short-term voltage instability(STVI) circumstances.
Design and Research of Channel Circuit Based on Broadband Power Line Carrier
Authors: Chen Siyu , Sun Hang , Weng Min , Wen Shijie , Li Le , Liu Bingqing 
Published: March 2023

Abstract
In order to effectively improve the anti-attenuation, anti-noise and anti-impedance change capabilities of the low-voltage narrowband power line carrier communication unit, reduce the carrier signal coupling attenuation, and highly fidelity signal power encoded and modulated by the carrier chip, an improved high-speed power line carrier communication transceiver circuit is designed. Using 303.13kHz~357.81kHz as sub-carrier signal frequency can effectively avoid the random noise generated by high-power power electronic equipment and household appliances below 35kHz. At the same time, to prevent the frequency crosstalk of power line carrier products with 270kHz and 421kHz as the center frequency, the Y-coupling capacitor and sixth order Butterworth band-pass filter circuit are used to design the signal receiving and transmitting circuit of the communication unit to isolate unwanted signals. The experimental simulation of the designed circuit is carried out on the circuit simulation software Multisim 12. The results show that the designed power line carrier communication transceiver circuit can effectively control the signal coupling attenuation within 4dB, and the filtering of unwanted signals can also reach 41.7dB, which has good application value.