bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental mapping of the ozone distribution in a pulsed positive corona discharge to estimate the efficiency of ozone production
Authors: Wattieaux Gaëtan , Ferrer Valentin , Sarrette Jean-Philippe , Merbahi Nofel , Eichwald Olivier 
Published: November 2022

Abstract
The spatial and temporal evolution of the ozone density has been measured in a 1 cm electrode gap tip to plane positive pulsed corona discharge in air at atmospheric pressure with no gas flow. It was expected to observe a higher ozone density in the vicinity of the discharge gap but ozone has been found at a quasi uniform density level up to 10 cm from the electrode gap after only 30 s of ignition. Such a wide distribution of ozone in the reactor cell is attributed to strong turbulence mostly triggered by the ionic wind. The mapping of the ozone density associated to the power measurement led to the estimation of the ozone production yield in term of mass per electrical energy.
Mechanism of pyrite photoconductance under an 808 nm-laser irradiation: a photo-thermal synergism
Authors: Miao Xinyang , Li Yudong , Wu Zhicong , Wang Lijun , Liu Xuecong , Zhan Honglei , Zhao Kun 
Published: November 2022

Abstract
As an earth-abundant mineral semiconductor, pyrite absorbs and converts photons under solar radiation to produce electrons, which is considered one of the important basic energy forms newly discovered in nature, and the response mechanism of light radiation on semiconductor minerals remains to be further explained. Here in this study, we focus on the photoconductance mechanism of natural pyrite, that is, an optical and electrical phenomenon in which the conductivity of a semi-coke is enhanced by absorption of an 808 nm wavelength laser. On the one hand, the photon energy of the 808 nm laser is higher than the band gap of pyrite, thus it can excite photogenerated charge carriers. On the other hand, the thermal effect produced by pyrite after absorbing the light energy will also improve the electrical conductivity. By monitoring the relationship between photoconductance, temperature, and time under laser irradiation, a photo-thermal synergism can be observed and evaluated. We aim to provide a basis for the study of the basic physical properties of natural pyrite, which will help to describe its role in geological and biological evolution.
Observation of $\Omega(2012) \to \Xi(1530)\bar{K}$ and measurement of the effective couplings of $\Omega(2012)$ to $\Xi(1530)\bar{K}$ and $\Xi\bar{K}$
Authors: Shen Chengping 
Published: November 2022

Abstract
Using $\Upsilon(1S)$, $\Upsilon(2S)$, and $\Upsilon(3S)$ data collected by the Belle detector, we discover a new resonant three-body decay $\Omega(2012)^-\to \Xi(1530)^0K^-\to\Xi^-\pi^+K^-$ with a significance of 5.2$\sigma$. The mass of the $\Omega(2012)^-$ is $(2012.5\pm0.7\pm0.5)$ MeV and its effective couplings to $\Xi(1530)\bar{K}$ and $\Xi\bar{K}$ are $(41.1\pm35.8\pm6.0)\times10^{-2}$ and $(1.7\pm0.3\pm0.3)\times10^{-2}$, where the first uncertainties are statistical and the second are systematic. The ratio of the branching fraction for the resonant three-body decay to that for the two-body decay to $\Xi\bar{K}$ is $0.97\pm0.24\pm0.07$ assuming isospin symmetry, consistent with the molecular model of the $\Omega(2012)$, which predicts comparable rates for $\Omega(2012)$ decay to $\Xi(1530)\bar{K}$ and $\Xi\bar{K}$. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
High resolution, wide field optical imaging of macaque visual cortex with a curved detector
Authors: Racicot Isabelle , Muslimov Eduard , Chemla Sandrine , Blaize Kévin , Ferrari Marc , Chavane Frédéric 
Published: November 2022

Abstract

Objective. Cortical activity can be recorded using a variety of tools, ranging in scale from the single neuron (microscopic) to the whole brain (macroscopic). There is usually a trade-off between scale and resolution; optical imaging techniques, with their high spatio-temporal resolution and wide field of view, are best suited to study brain activity at the mesoscale. Optical imaging of cortical areas is however in practice limited by the curvature of the brain, which causes the image quality to deteriorate significantly away from the center of the image. Approach. To address this issue and harness the full potential of optical cortical imaging techniques, we developed a new wide-field optical imaging system adapted to the macaque brain. Our system is composed of a curved detector, an aspherical lens and a ring composed of light emitting diodes providing uniform illumination at wavelengths relevant for the different optical imaging methods, including intrinsic and fluorescence imaging. Main results. The system was characterized and compared with the standard macroscope used for cortical imaging, and a three-fold increase of the area in focus was measured as well as a four-fold increase in the evenness of the optical quality in vivo. Significance. This new instrument, which is to the best of our knowledge the first use of a curved detector for cortical imaging, should facilitate the observation of wide mesoscale phenomena such as dynamic propagating waves within and between cortical maps, which are otherwise difficult to observe due to technical limitations of the currently available recording tools.
Quasifibrations of graphs to find symmetries and reconstruct biological networks
Authors: Boldi Paolo , Leifer Ian , Makse Hernán A 
Published: November 2022

Abstract
A fibration of graphs is a homomorphism that is a local isomorphism of in-neighborhoods. Recently, it has been shown that graph fibrations are useful tools to uncover symmetries and cluster synchronization in biological networks ranging from gene, protein, and metabolic networks to the brain. However, the inherent incompleteness and disordered nature of biological data preclude the application of the definition of fibration as it is. As a consequence, also the currently known algorithms to identify fibrations fail in these domains. In this paper, we introduce and develop systematically the theory of quasifibrations which attempts to capture more realistic patterns of quasi-symmetry in such networks. We provide an algorithmic solution to the problem of finding quasifibrations in networks where the existence of missing links and variability across samples preclude the identification of perfect fibration symmetries. We test our algorithm against other strategies to repair missing links in incomplete networks using real connectome data and synthetic networks. Quasifibrations can be applied to reconstruct any incomplete network structure characterized by underlying symmetrical and almost symmetrical clusters. The most direct application of our algorithms is that of helping researchers to find hidden symmetries in unknown (or partially unknown) networks, especially (but not exclusively) of biological nature.
Spatial distribution analysis of lift net fishing device based on oceanographic features in Palabuhanratu Bay
Authors: Ikrimah H , Supriatna S , Shidiq I P A 
Published: November 2022

Abstract
The types of charting gear being utilized by fisher in Palabuhanratu Bay are improving over time. From the raft lift-nets to the boat charting equipment. According to local authorization in fish gathering or PPI, the number of chart fishing gear in Palabuhanratu Bay is around 500 pieces in 2019. The goals of this study are to analyze the spatial distribution of lift net fishing devices during the dry and rainy months and determine the oceanographic features that are might influencing the spread. Some oceanographic parameters being employed include sea surface salinity, sea surface temperature (SST), water current, water depth, and chlorophyll-a concentration. This study uses images from the Google Earth application to mark the location of the lift net fishing devices. Additional satellite imageries from Landsat 8 OLI-TIRS sensors were applied to generate sea surface salinity, SST, and chlorophyll-a maps. The lift net fishing devices are mostly distributed in shallow water (water depth between 40 to 100 meters). The chlorophyll-a concentration, sea surface salinity, SST, and water depth the most significant oceanographic features influencing the number of lift net fishing devices during both seasons (dry and rainy months).
Empirical modeling of the distribution of chlorophyll-a in riam kanan reservoir
Authors: Saputra A N , Arisanty D , Muhaimin M , Adyatma S 
Published: November 2022

Abstract
Monitoring inland water quality through remote sensing is an alternative method. Broad remote sensing image coverage has the potential to increase the scope of monitoring. Remote sensing imagery is very suitable for monitoring in the Riam Kanan Reservoir which has a normal water level of 3200 Ha. Community activities for fisheries and tourism have the potential to increase nutrients and water fertility. The impact is in the form of an explosion of algal micro population which has a negative effect on the aquatic ecosystem and the surrounding population. Landsat 8 OLI was used in this study to determine the level of chlorophyll-a content in reservoir waters. Empirical modeling is a method for modeling the distribution of chlorophyll-a content utilizing the results of field measurements. Through this method also can be known which spectral band has an influence in monitoring the chlorophyll-a so that it can be seen the level of water fertility in the Riam Kanan reservoir.
A spatial study of landscape patterns in landslide-prone areas at cikakak sub-district, west java
Authors: Aisyah S N , Supriatna S , Rustanto A 
Published: November 2022

Abstract
Landslides have a record of deadliest impact in Indonesia during 2015 – 2017. Landslide may be caused by human activities which deteriorate the environment condition such as by reconstructing the landscapes that may reduce the ecological functions. Therefore, mapping the landslide-prone area is necessary as one of the efforts to mitigate the disaster that could be following. The methods used in this study are the landscape metrics with FRAGSTATS 4.2. and Index Storie. Landscape metrics is useful to map the landscape pattern while the Index Storie can be used to map the landslide-prone area, both Indexes then being used for further analysis to determine the relationship between landscape patterns and landslide-prone areas in the study area. Deforestation in the study area is indicated by the values of PD, LPI, and IJI, the Index Storie shows that areas of moderate landslide-prone areas dominate the study area and have specific characteristics that trigger the landslides. A combination of landscape metrics and Index Storie show that the relationship between landscape patterns and landslide-prone areas can be one of the priorities determining tools used for monitoring and planning land cover as an effort to mitigate landslides.
The extraction and analysis of lineament density from digital elevation model (dem) in libungo geothermal area, gorontalo
Authors: Manyoe I N , Hutagalung R 
Published: November 2022

Abstract
Remote sensing often used in geothermal exploration because it was considered has many advantages. The aim of this research is to extract and analyze the lineament density in the Libungo geothermal area based on a Digital Elevation Model (DEM). Lineament is obtained from Digital Elevation Model (DEM) satellite image data downloaded from the Geospatial Information Agency (BIG) page. Digital Elevation Model (DEM) data processing uses Geomatica aplication to extract the lineament automatically. Extracted lineament is processed using Geographic Information System (GIS) aplication to produce a lineament density map and processed using Rockworks aplication to generate direction. Lineament density maps help identify permeability in the Libungo geothermal area. Based on the results of the extraction and lineament density analysis, it is interpreted that the Libungo geothermal area has a high-density value. High density values are associated with good permeability. A direction that affect lineaments in the Libungo geothermal area are northwest-southeast in the direction of Gorontalo’s main geological structure.
The susceptibility of landslide zone using weight of evidence method in nagari tanjung sani and nagari sungai batang, west sumatera.
Authors: Lestari S F , Suratman  
Published: November 2022

AbstractLandslides naturally occur to create slope stability, especially in mountainous areas. Disaster management is needed to minimize the impact of losses incurred. Management of landslide is formed based on knowledge of characteristics, types, and processes of disaster occurrence. Map of landslide susceptibility was one of that. This research aims to determine and analyze the type, landslide density based on event control factors, and zonation of susceptibility. The method used was the statistical method of Weight of Evidence (WOE) and field observation. The results showed that Nagari Sungai Batang has a translational and rotational type of landslide with a medium density of landslide and medium susceptibility of landslide. Nagari Tanjung Sani has landslide type rockfall and topple with a high density of landslide and highest susceptibility. Based on these conditions there were some differences in type, the controlling factor, and susceptibility of landslide degree, although they were formed from the same geomorphological process as Caldera shape by Andesit Maninjau Formation.
The identification of soil moisture as a factor of drought in cilutung watershed during indian ocean dipole year
Authors: Arlan D S D , Kusratmoko E , Hernina R 
Published: November 2022

Abstract
The Indian Ocean Dipole event in 2019 has caused several drought events in the Cilutung Watershed. The information about the spatial and temporal soil moisture distribution along its changes is needed to identify soil moisture values as a drought factor in the Cilutung Watershed. The Landsat 8 OLI-TIRS data used to get the value of soil moisture based on Soil Moisture Index (SMI) method by applying the triangle method between Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI). This study analyses the spatial patterns of soil moisture and identifies physical characteristics that are forming in the areas with dry and very dry soil moisture values in the Cilutung Watershed during the dry period in 2019. The results showed that in the Cilutung Watershed during the dry month period in 2019, the Soil Moisture Index value would be higher on steep slopes, with the land-use consisting of shrubs, forests and mixed dryland agriculture, with the type of soils, red-yellow podzolic while the Soil Moisture Index value would be lower on the flat slopes, with the land-use consisting of residential land and open land, with the type of soils grumusol. Based on the K-Means grouping analysis method, the areas with dry and very dry soil moisture values in the Cilutung Watershed tends to have physical characteristics of flat slopes, the type of land use such as the settlement, mixed dryland agriculture, open land and rice fields, with the soil types grumusol, latosol and andosol.
identification of lithological characteristics using multispectral landsat 8 oli imagery in the cipatujah area, west java, indonesia
Authors: Aliyan S A , Bratanegara A S , Ihsan H M , Astari A J , Somantri L 
Published: November 2022

Abstract
The Cipatujah area is part of the Southern Mountains of West Java which has diverse and unevenly distributed lithology. The lithology that dominates the Cipatujah and surrounding areas originate from the volcanic activities such as lava, volcanic breccias, tuffs, and intrusions. While the sedimentary rocks that compose them are limestone and sandstone rocks. The lithology that dominates the southern region is carbonate sedimentary rocks, which are represented by sandstone units. In the northern part, the lithologies are dominated by deposition results volcanic activity consists of various materials originating from andesitic lava units that extend to the east of the research area, while the volcanic breccia deposited from north to the west of the research area. There is a tuff unit layer above the volcanic breccia to the south. In the eastern area deposited carbonate rock units that form the karst landscape. Lithology characterization and determination of rock units in the Cipatujah area were carried out using image processing techniques from color composite bands from Landsat-8 (OLI) data. Geological analysis using SWIR-2 (7), SWIR-1 (6), and blue (2) composite bands and lithology using near-infrared (5) composites SWIR-1 (6), and SWIR-2 (7) bands. Then the analysis results are examined with geological data from the mapping that has been done before. Approach to band composite analysis by verifying geological data taken directly to help improve the identification and validation of better and more measured lithological distribution.
Remote sensing-based vegetation indices for monitoring rice crop phenology and productivity in cikakak sub-district, sukabumi regency
Authors: Hisyam A K , Supriatna S , Shidiq I P A 
Published: November 2022

Abstract
Paddy is the main food crop consumed by most of the Indonesian daily. It is supported by the fact that rice consumption reached up to 1.55 tons in 2018, and Sukabumi Regency is among the five largest rice producer in Indonesia. The goal of this study is to determine the rice crop phenology and estimate rice productivity in one year of the planting season. The rice crop phenology was analyzed by comparing vegetation indices such as NDVI, ARVI, and MSAVI in different temporal situations. Vegetation indices derived from Sentinel-2 imageries via Google Earth Engine. A rice crop productivity model developed from the statistical relationship between in-situ-based productivity data and vegetation indices applied to estimate productivity per each paddy field at a sub-district level. Also, the estimation will be associated with elevation data. The results of this study are the pattern of the rice crop phenology and the number of harvesting time in one year-planting season. The rice productivity in the Cikakak sub-district estimates at the range between 6.50 to 8.87 tonnes per hectare. Estimation models utilizing NDVI and MSAVI are showing similar results, which averagely at 8.89 and 8.87 tonnes per hectare, respectively. Rice fields with high productivity are mostly located at 250 to 500 meters above sea level.
Gis network analysis to optimize zoning system implementation for public junior high schools in yogyakarta city
Authors: Utami R K S , Khakhim N , Jatmiko R H , Kurniawan A , Halengkara L 
Published: November 2022

AbstractSchools availability as public facilities is the government duty and responsibility. Recently, the government implemented a policy of school zoning system to increase society access to education. This policy requires children to choose school closest to their home. However, facts denoted that many problems occur with this system. School zoning techniques with buffer system become an obstacle due to the emergence of ‘blankspot area’. This study aims to provide an alternative solution of blankspot area problem in the school zoning system. This study applies network analysis using the p-median model (location-allocation analysis) and service area analysis. The network analysis used impendace modification as a standard for zoning based. ArcGIS is used as a spatial analysis tool to provide better illustration of this network analysis. The results indicated that the service area analysis was more effective in solving zoning technique problems compared to the p-median model analysis because it provided a higher percentage of demand coverage when using the same impedance constraints. However, the p-median analysis technique is able to provide a more realitic picture of the allocation for each demand (without impendance). This research emphasizes the importance of adding schools in order to optimize the school services.
Land use change as one of the indicators to formulate the gentrification phase at the diponegoro university semarang
Authors: Ariani N M , Priambudi B N , Wijaya M I H 
Published: November 2022

Abstract
Campus as an educational area is one of the areas with the most potential for gentrification. It happened in the Diponegoro University area which first began in 1980 until now. The occurrence of gentrification in the Diponegoro University area has been proven by previous research which shows that this area shows the characteristics of gentrification seen from the physical, social and economic aspects. However, the exact stages / phases of gentrification in the region are not known. Many factors can be used to assess the development of the gentrification phase, such as land cover and changes. The main aim of the present research is to formulate the phase of gentrification occurred in the Diponegoro University based on land use changes from 2006 to the present. The method used is a spatial analysis of image processing in series. The satellite imagery used is the GeoEye-1 type in 2007, 2012 and 2019. The results show that the gentrification phase starts with the entry of immigrants, which is followed by an increase in land values, changes in the face of the area and the migration of indigenous people to other areas. Changes in the area can be seen from the reduced agricultural land area, to the increase number of housing clusters and the emergence of city-scale commercial facilities. The total addition of built-in land in the study area from 2007 to 2019 was 301,171 Ha, with the urban village having the largest increase being Meteseh with the addition of a total built land of 66,913 Ha.
Tour guide level of understanding on geodiversity, biodiversity, and culture diversity - study at ciletuh pelabuhanratu global geopark
Authors: Yani A , Mulyadi A , Rosita  
Published: November 2022

Abstract
One of the competencies that guides must be mastered is communicating ideas and information about physical, social, and cultural conditions at tourist sites. The views and data that need to be shared in the geopark area are three elements, namely Geodiversity, Biodiversity, and Culture Diversity. Also, it must be able to communicate in an exciting and communicative language. This study wants to find out the level of understanding of guides on these three aspects. The research method used was a survey and thorough testing of research subjects, namely members of the Indonesian Tour Guides Association in Sukabumi Regency, especially those serving tourists in the Ciletuh Palabuhanratu Global Geopark. The results showed that the material’s average mastery was still lacking, and the distribution of the material under its control was uneven. Thus, it is considered necessary to increase competence, especially regarding the knowledge and understanding of the geopark’s three aspects.