bluuebunny/crossref_metadata_2025_split huggingface dataset:
Standing wave instability in large area capacitive discharges operated within or near the gamma mode
Authors: Lieberman M A , Kawamura E , Chabert P 
Published: November 2022

Abstract
Large-area capacitive discharges used for plasma deposition operate in a regime where both electromagnetic and secondary electron emission effects are important. The standing wave shortened wavelength in the presence of plasma depends on the sheath size, and in the γ mode, the secondary electron multiplication controls the sheath physics. Near the α-to-γ transition, and within the γ mode, the sheath width typically varies inversely with the discharge voltage, and large center-to-edge voltage (standing wave) ratios may exist. This can give rise to a standing wave instability, in which the central voltage of the discharge grows uncontrollably, for a given voltage excitation at the discharge edge. Using a simple model, we determine the discharge equilibrium properties, the linearized stability condition, and the nonlinear time evolution. For sufficiently large areas, we show that a discharge equilibrium no longer exists above a critical edge voltage at marginal stability.
Role of charge carriers in long-term kinetics of polyurethane electroactuation
Authors: Coativy G , Yuse K , Diguet G , Perrin V , Seveyrat L , Dalmas F , Livi S , Courbon J , Takana H , Cavaillé J Y 
Published: November 2022

Abstract
Previous work has shown that dielectrophoretic body forces resulting from permittivity and conductivity heterogeneities only partially contribute to the overall electromechanical deformation of segmented polyurethanes (PUs). In this work, we studied the experimental kinetics and electric current of PU thin films over a long time period (1–105 s) for different applied electric fields. Then, we thoroughly analyzed the drift behavior of electric carriers and its macroscopic effect using simple modeling and numerical simulation. The main assumption is that the macroscopic deformation results from the accumulation of electric charges near the electrodes, leading to local stretching. Assuming that the mobilities of negative and positive carriers are different, their migration towards the electrodes will have different kinetics. A preliminary simulation attempt using a single set of parameters, supports these assumptions, and leads to a correct bending amplitude and current evolution according to the applied electric field. Furthermore, the resulting compression is consistent with the observed electrostriction.
Non-equilibrium phonon distribution caused by an electrical current
Authors: Dwedari Magdulin , Brendel Lothar , Wolf Dietrich E 
Published: November 2022

Abstract
In an attempt to explain flash sintering experiments, it had been proposed that the electron–phonon coupling leads to a proliferation of short wave-length lattice vibrations in an electric field. In this paper we investigate this by solving two coupled Boltzmann equations, describing a free electron gas in an electric field scattering from a crystal lattice coupled to a heat bath. The electric field imposes cylindrical symmetry and drives the electrons and the phonons into a non-equilibrium steady state. We find that the phonon distribution shows a strong excess population at the Brillouin zone edge in the direction of the electric field. We argue analytically, that this can be traced back to the shifted Fermi sphere for the electrons. Furthermore, not only energy but also momentum is exchanged in the electron–phonon system, which defies any attempt at describing the system by a two-temperature model.
Spectroscopic investigations of detachment on the MAST Upgrade Super-X divertor
Authors: Verhaegh K. , Lipschultz B. , Harrison J.R. , Osborne N. , Williams A.C. , Ryan P. , Allcock J. , Clark J.G. , Federici F. , Kool B. , Wijkamp T. , Fil A. , Moulton D. , Myatra O. , Thornton A. , Bosman T.O.S.J. , Bowman C. , Cunningham G. , Duval B.P. , Henderson S. , Scannell R. , the MAST Upgrade team  
Published: November 2022

Abstract
We present the first analysis of the atomic and molecular processes at play during detachment in the MAST-U Super-X divertor using divertor spectroscopy data. Our analysis indicates detachment in the MAST-U Super-X divertor can be separated into four sequential phases: first, the ionisation region detaches from the target at detachment onset leaving a region of increased molecular densities downstream. The plasma interacts with these molecules, resulting in molecular ions (

D

2

+

and/or

D

2

−

→
D
+

D

−

) that further react with the plasma leading to molecular activated recombination and dissociation (MAR and MAD), which results in excited atoms and significant Balmer line emission. Second, the MAR region detaches from the target leaving a sub-eV temperature region downstream. Third, an onset of strong emission from electron–ion recombination (EIR) ensues. Finally, the electron density decays near the target, resulting in the bulk of the electron density moving upstream. The analysis in this paper indicates that plasma–molecule interactions have a larger impact than previously reported and play a critical role in the intensity and interpretation of hydrogen atomic line emission characteristics on MAST-U. Furthermore, we find that the Fulcher band emission profile in the divertor can be used as a proxy for the ionisation region and may also be employed as a plasma temperature diagnostic for improving the separation of hydrogenic emission arising from electron-impact excitation and that from plasma–molecular interactions. We provide evidences for the presence of low electron temperatures (≪0.5 eV) during detachment phases III–IV based on quantitative spectroscopy analysis, a Boltzmann relation of the high-n Balmer line transitions together with an analysis of the brightness of high-n Balmer lines.
Riemann surfaces for integer counting processes
Authors: Prolhac Sylvain 
Published: November 2022

Abstract
Integer counting processes increment the integer value at transitions between states of an underlying Markov process. The generator of a counting process, which depends on a parameter conjugate to the increments, defines a complex algebraic curve through its characteristic equation, and thus a compact Riemann surface. We show that the probability of a counting process can then be written as a contour integral on that Riemann surface. Several examples are discussed in detail.
Monitoring therapeutic proton beams with LGAD silicon detectors
Authors: Vignati A. , Abujami M. , Bersani D. , Borghi G. , Centis Vignali M. , Data E. , Ficorella F. , Galeone C. , Garbolino S. , Giordanengo S. , Hammad Ali O. , Martì Villarreal O.A. , Mas Milian F. , Mazza G. , Staiano A. , Wheadon R.J. , Cirio R. , Sacchi R. , Monaco V. 
Published: November 2022

Abstract
The University and the National Institute for Nuclear Physics of Torino are developing LGAD-based prototypes for beam monitoring in proton therapy. The direct measurement of single beam particles could overcome some features of currently used ionization chambers, such as slow charge collection and reduced sensitivity, which limit the implementation of advanced delivery techniques (e.g. rescanning). LGAD strip sensors have been designed and produced by Bruno Kessler Foundation (FBK, Trento) specifically for this project. A counter prototype to directly count individual protons at clinical fluence rates (106–1010 protons/cm2·s) and a telescope system to measure the beam energy with time-of-flight (TOF) techniques are described. Tests of LGAD silicon strip sensors performed on synchrotron and cyclotron beams of therapeutic centers, using a pin-hole ionization chamber for the independent measurement of the particle flux, already showed the possibility to keep the counting error <1% up to a beam fluence rate of few 108 protons/cm2·s. The ongoing tests of counting sensors readout by a dedicated fast charge sensitive amplifier chip are reported. The telescope system, made of two sensors at a distance up to 95 cm, allows measuring the beam energy in the clinical range (70–230 MeV) with a maximum deviation of 310 keV in respect to the nominal one, with an uncertainty of 500 keV, thus achieving the prescribed clinical accuracy of 1 mm in the range in water.
Control infrastructure monitoring system at the NSRL facility cluster
Authors: Qin T. , Li C. , Liu G.F. 
Published: November 2022

Abstract
The National Synchrotron Radiation Laboratory (NSRL) facility cluster is a collection of user facilities developed by NSRL, including the Hefei Light Source-II (HLS-II), Tunable Infrared Laser for Fundamental of Energy Chemistry (FELiChEM), and THz near-field high-flux material physical property test system (NFTHZ). User facilities generally have high operational availability requirements. The NSRL facility cluster relies on the control infrastructure to provide computing, network, and storage resources, as well as various services that must be available 24 hours a day, 7 days a week. The monitoring system is responsible for tracking the operational status of the control infrastructure, gathering information on faults, performance degradation and cybersecurity issues, and distributing alarm messages in time. It facilitates the operator troubleshooting problems efficiently to improve the availability of the user facilities. The monitoring system is developed by integrating several free and open source software tools. Zabbix is selected as the monitoring tool and collects metrics data from the control infrastructure. Three upper-layer applications are developed for data visualization. The dashboard shows the operational status of the network and various devices. The alarm system collects and distributes alarm messages via web-based GUI and WeChat. The reporting system periodically generates metrics and alarm reports. The monitoring system has been deployed since March 2022. The results indicate that the monitoring system can effectively identify hidden hazards in the control infrastructure.
Fine-tuning near-boundary swimming equilibria using asymmetric kinematics
Authors: Liu Leo , Zhong Qiang , Han Tianjun , Moored Keith W , Quinn Daniel B 
Published: November 2022

Abstract
When swimming near a solid planar boundary, bio-inspired propulsors can naturally equilibrate to certain distances from that boundary. How these equilibria are affected by asymmetric swimming kinematics is unknown. We present here a study of near-boundary pitching hydrofoils based on water channel experiments and potential flow simulations. We found that asymmetric pitch kinematics do affect near-boundary equilibria, resulting in the equilibria shifting either closer to or away from the planar boundary. The magnitude of the shift depends on whether the pitch kinematics have spatial asymmetry (e.g. a bias angle, θ
0) or temporal asymmetry (e.g. a stroke-speed ratio, τ). Swimming at stable equilibrium requires less active control, while shifting the equilibrium closer to the boundary can result in higher thrust with no measurable change in propulsive efficiency. Our work reveals how asymmetric kinematics could be used to fine-tune a hydrofoil’s interaction with a nearby boundary, and it offers a starting point for understanding how fish and birds use asymmetries to swim near substrates, water surfaces, and sidewalls.
Soft dorsal/anal fins pairs for roll and yaw motion in robotic fish
Authors: Coral Willam , Rossi Claudio 
Published: November 2022

Abstract
Fish has primarily served as a model for many bio-inspired underwater robots. However, most of the work on fish-inspired robots is focused on propulsion and turning in the horizontal plane. In this paper, we present our work on the 3D motion of bio-inspired underwater robots. A pair of actuated soft fins, mimicking the soft dorsal and anal fins of a live fish, have been designed and tested to generate lateral thrusts that aim to produce both roll and yaw motions. Furthermore, they can be used to provide vertical stabilization of the forward motion in the robot. These fins comprise shape memory alloy wires embedded in silicone. We demonstrate that these fins can provide a means for 3D maneuvering. In this work, we focus on roll and yaw motions. A key feature of the proposed design is that it is lightweight, compact, and waterproof.
The effectiveness of agroforestry in reducing the erosion rate compared to the eucalyptus plantation in Wanagama I educational forest
Authors: Ananta D P , Kusumandari A 
Published: November 2022

Abstract
Due to the increasing demand of grass for feeding the cattle, agroforestry land use was developed in the area of Wanagama I Educational Forest. As a consequence, research on erosion rates at the agroforestry land use is very important, especially by comparing its erosion rate with that of eucalyptus in order to analyse the effectiveness of agroforestry in reducing the erosion rate. The objectives of the study is to determine the erosion rates both at the agroforestry area and eucalyptus plantation and the influence of rainfall to erosion rates at the two areas. The erosion rates were measured by using the small plot 22 x 4 meters established in the field both at the agroforestry and eucalyptus areas. For measuring the rainfall, ombrometer were installed at such sites. Sigma Plot software was applied for multiple regression analysis, to clarify the effect of rainfall depth and intensity on erosion rate. The results of the study showed that the erosion rates on eucalyptus plantation land was 1445.85 kg/ha or 1.45 tons/ha and on agroforestry land was 679.82 kg/ha or 0.68 tons/ha. Rainfall depth and rainfall intensity affect erosion on eucalyptus land with a coefficient of determination of 0.585 and on agroforestry lands of 0.716.
Study of carbon dioxide (co2) concentration distribution in the soil on mixed vegetation area land cover at specific sites of jonggrangan karst zone
Authors: Wijaya A W , Haryono E 
Published: November 2022

Abstract
Karstification and soil physical factor in the soil at Jonggrangan Karst zone induces carbon dioxide (CO2) concentration dynamics. This research aimed to measuring soil CO2 concentration varieties on mixed vegetation area at specific sites of Jonggrangan Karst zone and analyze the relation among soil physical factors with CO2 concentration. The data were collected between the dry season and rainy season, as well as in different of soil depths at 20 cm, 40 cm, and 60 cm. The data was performed and explained graphically, comparatively, and built upon statistic descriptive. The result shows that the soil moisture has strong relation to CO2 concentration and shows a proportional trend vertically. The soil organic matter shows an inversely trend to CO2 concentration. The increase in CO2 concentration happens during the rainy season and is influenced by land cultivation.
Simulation of landslide disaster in reducing disaster risk
Authors: Kembara M D , Logayah D S , Hamidah S 
Published: November 2022

Abstract
The Centre of Volcanology and Geological Hazard Mitigation (PVMBG) recorded 1,887 soil movement events throughout Indonesia 2015-2016 which resulted in 3224 people. A total of 154 soil movement occurred in West Java was categorized as much compared to other provinces. Disaster mitigation efforts continue to be carried out by the government, one of which is involved in the community to increase awareness of disaster management through the National Program Kampung Siaga Bencana (KSB). People who live in disaster-prone areas are empowered through capacity building and encouraged to establish disaster mitigation infrastructure such as evacuation routes. One of the villages entering the disaster-prone area, namely Alamendah Village in Rancabali District, Bandung Regency. The geographical location of villages in the highlands and massive development has the potential to give birth to a disaster. Therefore, increasing public awareness of disasters in the natural village must be carried out so that disaster mitigation can be applied properly. This research is expected to provide benefits to the public and encourage the formation of Kampung Siaga Bencana, namely the KSB management consisting of administrators and members and existing sections and building networks (work partners) both individually and institutions that have concentration in disaster mitigation activities.
Mass wasting mechanism of gorontalo outer ring road (gorr) in padengo, gorontalo
Authors: Suma M D , Rahmatia R , Manyoe I N , Kobandaha T C , Kandouw R A , Tolodo D D 
Published: November 2022

Abstract
One of the things that triggered the unrealized government project, namely Gorontalo Outer Ring Road or GORR, is the number of landslide points scattered along the GORR road section, as is the case in the area around GORR, namely Padengo area. This research aims to determine the mechanism of mass wasting in the Padengo area. The method used is the field survey. Data taken in the form of lithology data, geological structure and geomorphology. Field data is then analyzed to determine the mechanism of mass wasting at the research area. The results showed that the lithology of the study area was composed of reef limestone and alluvial. Reef limestone has a yellowish white color, has a massive structure, contains fossils that are exposed to molluscs and corals and is easily dissolved. The geomorphology of the study area is composed of solusional hilly units and lake plain units. In the research area, there are many extension fractures. Based on the lithological, geological structure and geomorphological, it can be concluded that the potential for mass wasting that can occur in the Padengo area is very large. It was known that the main controller for mass wasting is the fractures and the lithology characters in the research area. The type and mechanism of landslides that generally occur in Padengo Village are the Debris Slide type.
The zonation of cimandiri estuary based on sea surface salinity from sentinel-2 imagery and its relation with the catching spots distribution of anguilla spp. larvae
Authors: Pratiwi T D , Supriatna S , Shidiq I P A 
Published: November 2022

Abstract
Estuary zone is a transition zone between river environment and marine environment. The meeting between river and sea in the estuary zone causes a mixture of fresh water that has a low salinity value and sea water that has a high salinity value. The meeting of both causes the value of salinity in the estuary zone to fluctuate. This makes the estuary region inhabited by various biota. This study focused on Cimandiri Estuary, where Cimandiri Estuary is a catching area for eel larvae (Anguilla spp.). Cimandiri Estuary zonation mapping in this study using Sentinel-2 imagery. In addition to mapping the estuary zone, this study also aims to analyze the relationship between the catch of eel fish larvae with the level of salinity in the wet and dry months. Estuary zone mapping is done by applying the Cilamaya Algorithm to the Sentinel-2 image to get the distribution of surface salinity values. In wet months where the amount of rainfall is high, the value of salinity and catch will decrease. But on the contrary in the dry months where rainfall is low, the salinity value and catch of eel fish larvae will increase.
Spatial pattern of propagation digital terrestrial television system in east jakarta city
Authors: Maulana M F , Pin T G , Wibowo A 
Published: November 2022

Abstract
Development of television has gone into terrestrial digital systems that have many advantages over previous (analogue) systems. The nature of radio waves for digital terrestrial television broadcasting that propagates or propagation causes reflection and diffraction due to disturbances or barriers in the form of tall buildings and trees. The purpose of this research is to analyze propagation patterns of digital terrestrial television systems and the effect of physical conditions on the propagation value of digital terrestrial television systems. The variable is land cover, relief, slope direction, distance from transmitter, height, and building height barrier. The method uses spatial analysis within grid analysis and correlation analysis. The results of this study showed that the propagation pattern of digital terrestrial television systems spread randomly to the moderate signal in the central and northeast of East Jakarta city and clustered for a bad signal in the north and northwest areas of East Jakarta city and good signal in the southern region of East Jakarta city. Based on correlation analysis, the propagation pattern of digital terrestrial television systems influenced by the physical condition of the region from variable height and height barriers of buildings.
The rice production of paddy field and relationship with elevation using sentinel-1a sar in subang regency
Authors: Ramadhani S U , Rokhmatuloh R , Wibowo A 
Published: November 2022

Abstract
Subang Regency is the third largest rice producer in West Java. The Total area of Subang 41% is the paddy field. This research aims to determine how the spatial pattern of the paddy field and its relation to altitude using the Sentinel-1A SAR satellite imagery in Subang district. The Sentinel-1A image data used is in January 2018-June 2019. The study used Google Earth Engine to process Sentinel-1A image data. Classification of the harvest and not harvest using the maximum method likelihood. The results of this research show that the calculation of ice production on the paddy field has a value of R2 of 0,58 for low elevation and flat area. The value will be smaller in high elevation and hilly areas. The research found that the Sentinel-1A is better used to calculate rice production in low elevation and flat areas. The research concluded that the lowest elevation and flat areas, which have rice productions higher than rice productions in high elevation and hilly areas with the highest rice production in April-May.
Utilization of online geospatial data sources for oikonym study: mapping and analysis of housing name in capital area of kulon progo regency
Authors: Susilo B , Cahyono A 
Published: November 2022

Abstract
Oikonym is a part of toponym that focus the study on the name given to inhabited place. In the past, availability of data was one of the obstacles in the study of toponym as well as oikonym. Now days, the development of digital mapping and information technology particularly internet enables oikonym data obtained from a variety of sources. This study aimed to explore the typology of housing names as well as the geographical characteristic of the housing location by means of mapping and spatial analysis. Data required for mapping and analysis were obtained via internet therefore referred as online geospatial data sources. Housing names were analyzed based on their generic and specific elements and language of origin used for naming. Spatial analyses i.e., 3D analysis and network analysis were performed to obtain geographical characteristic of the housing location. This study shows, about 57% of housings which have generic name, use indigenous element i.e., local language. In addition to this, about 80% of housings use indigenous element for their specific names. Housings mostly located in low land and gentle slope. On average, distance of housings to the center of capital area is 3.3 km and road density is 6.6 km/km2.