bluuebunny/crossref_metadata_2025_split huggingface dataset:
Infrared radiation properties of a satellite on the basis of 3D reconstruction
Authors: Yang Yufeng , Lei Ning , Li Siyuan , Zhang Jiahao 
Published: January 2024

The infrared radiation properties of a satellite provide essential information for space target recognition. In this study, a 3D model of a satellite is obtained using a 3D reconstruction algorithm based on deep learning. The transient temperature field distribution on the target surface is simulated using the ANSYS finite element analysis method by integrating the solar zenith angle, the position of the satellite orbit, and the dynamic angle of the detector. The infrared radiation model is used to analyze the influence of target surface temperature, orbit position, and rotation angle on infrared radiation. The calculated results show that, under the set parameters, the temperature range of all targets is 280–380 K, and the temperature distribution determines the variation trend of radiation intensity. The variation trends of radiation intensity presented by different motion postures of satellites differ considerably. The radiation intensity variation of the triaxial stabilized attitude is relatively stable, whereas the radiation intensity of the spin-stabilized attitude exhibits remarkable periodic fluctuations. The periodic motion of satellite orbit leads to periodic fluctuations in infrared radiation. The obtained infrared radiation data provide support for target detection, tracking, recognition, and infrared detector parameter design.
Oil-film extinction coefficient inversion based on thickness difference: erratum
Authors: Zhang Zhenduo , Li Wei , Ma Zhanjun , Dong Shuang , Xie Ming , Li Ying 
Published: January 2024

An erratum is presented to correct errors in Eqs. (2) and (3) in our previously published paper [Opt. Express 30(17), 30368 (2022).10.1364/OE.461162].
Silicon photonic integrated interrogator for fiber-optic distributed acoustic sensing
Authors: Jin Zhicheng , Chen Jiageng , Chang Yanming , Liu Qingwen , He Zuyuan 
Published: January 2024

Distributed acoustic sensing (DAS) technology has been a promising tool in various applications. Currently, the large size and relatively high cost of DAS equipment composed of discrete devices restrict its further popularization to some degree, and the photonic integration technology offers a potential solution. In this paper, we demonstrate an integrated interrogator for DAS on the silicon-on-insulator (SOI) platform. The design of the chip revolves around a Mach–Zehnder modulator (MZM) transmitter and a dual-quadrature and dual-polarization coherent receiver. The integrated interrogator supports multiple DAS schemes, including the time-gated digital optical frequency domain reflectometry (TGD-OFDR), which is adopted for system performance evaluation. 59 pε/Hz strain resolution in 12.1 km sensing fiber with 1.14 m spatial resolution (SR) is realized. Besides, along 49.0 km sensing fiber, 81 pε/Hz strain resolution with 3.78 m SR is achieved. The results show that the integrated interrogator has comparable performance to the discrete DAS system. To the best of our knowledge, this is the first dedicated on-chip DAS interrogator, which validates the effectiveness of the blend of photonics integration and DAS technology.
Percent body fat was negatively correlated with Testosterone levels in male
Authors: Ma Hailu , Sun Juan , Wu Xueyan , Mao Jiangfeng , Han Qin 
Published: January 2024

Background
Lower testosterone levels in men have been consistently associated with metabolic abnormalities, particularly obesity. This study aims to investigate the relationship between testosterone and obesity by analyzing the correlation between testosterone levels and body fat percentage using data from the NHANES (National Health and Nutrition Examination Survey) database.

Methods
The study included a total of 5959 participants from the NHANES 2011–2016. Multivariable linear regression models were used to assess the association between testosterone levels and body composition parameters, including total percent fat (TPF), android percent fat (APF), gynoid percent fat (GPF), android to gynoid ratio (A/G), and lean mass percent (LMP). Subgroup analyses stratified by sex were conducted using multivariable linear regression. To account for potential non-linear relationships, fitted smoothing curves and generalized additive models were utilized. A separate analysis of participants with a BMI ≥ 30 kg/m2 was conducted to validate the conclusions.

Result
Among males, testosterone levels showed a significant negative correlation with TPF (β = -11.97, P <0.0001), APF (β = -9.36, P<0.0001), GPF (β = -10.29, P <0.0001), and A/G (β = -320.93, P<0.0001), while a positive correlation was observed between LMP and testosterone levels (β = 12.62, P<0.0001). In females, a contrasting pattern emerged in the relationship between testosterone and body fat, but no significant correlation was found between testosterone and body composition in obese women.

Conclusions
The findings of this study support a negative association between body fat and testosterone levels in males.
Trends in obesity, leisure-time physical activity, and sedentary behavior in Korean adults: Korea national health and nutritional examinations survey from 2014 to 2021
Authors: Han Yunmin , Sung Hoyong , Choi Younghwan , Kim Yeon Soo 
Published: January 2024

Objectives
This study aimed to investigate trends in obesity by dividing it based on body mass index (BMI) and waist circumference indicators, sedentary behavior, and leisure-time physical activity (LTPA) in Korean adults from 2014 to 2021. This study also aimed to determine the adherence rate of people with obesity to physical activity.

Methods
Data from the Korea National Health and Nutritional Examination Survey (KNHANES) from 2014 to 2021 were used. A total of 42,676 participants 19 years or older were included in the final analysis. Sociodemographic characteristics, anthropometric measurements, and physical activity levels were recorded. Physical activity levels were assessed using the Global Physical Activity Questionnaire, a self-reported questionnaire. Multivariable logistic regression analysis adjusted for covariates was used to investigate the prevalence of obesity and sitting time or adherence to meeting the physical activity guidelines for each survey year.

Results
This study included 42,676 adults. The weighted prevalence of obesity in all ages significantly increased from 30.8% (29.1%-32.5%) in 2014 to 34.5% (32.9%-36.2%) in 2017 and 37.3% (35.5%-39.1%) in 2021 (p for trend < 0.004). The weighted adherence rate to LTPA ranged from 25.5% (95% confidence interval [CI], 23.7%-27.2%) in 2014 to 20.5% (95% CI, 18.7%-22.2%) in 2021(p for trend < 0.001). The weighted prevalence of sitting time for 8 h/day or more significantly increased from 46.7% (44.4%-49.0%) in 2014 to 56.2% (54.4%-58.0%) in 2017 and 63% (60.7%-65.3%) in 2021 (p for trend < 0.001). According to this study, the LTPA level among women with obesity was significantly low.

Conclusion
From 2014 to 2021, obesity and sedentary behavior significantly increased and adherence to LTPA decreased among Korean adults. Given these concerning trends, comprehensive interventions are needed at the national level to encourage healthy lifestyle behaviors.
Architecture of Co-Existence: Building Pluralism, Ed. Azra Akšamija (2020)
Authors: Akcan Esra 
Published: January 2024

Review of: Architecture of Co-Existence: Building Pluralism, Ed. Azra Akšamija (2020)
Geneva: Aga Khan Award for Architecture, and Berlin: ArchiTangle, 292 pp., approx. 100 illus.,
ISBN: 978-3-96680-008-2, $45 (hardback)
“Trampa de Fernando Cepeda: arte y vida en el estatuto de seguridad”
Authors: Rueda Fajardo Santiago 
Published: January 2024

El VI Salón Atenas de 1980 fue una exposición que privilegió el arte conceptual y de procesos, incluyendo artistas que trabajaban en esas coordenadas en Cali -Alicia Barney-, Barranquilla - Fernando Cepeda, Álvaro Herazo, Sara Modiano-, Medellín —Carlos Echeverry y Ronny Vayda—, con la inclusión en el evento de otros jóvenes de Bogotá que trabajaban en otras coordenadas, -Juanita Pérez, Natalia Rivera y Jaime Silva-.
El Salón tenía lugar justo después de la antológica instalación Grano de Miguel Ángel Rojas, que se había presentado en el sótano del mam en octubre.
Álvaro Herazo, en reemplazo de Fernando Cepeda, participó en la obra de este último titulada Trampa, un performance consistente en encerrarse durante 48 horas en una celda protegida con una barricada de alambre de púas, con mesa de noche y catre incluido. El encierro, a partir del 3 de diciembre a las 7 de la noche, es narrado por Herazo:
Selection of Propulsion System for Electric Amphibious Bus to Alleviate Traffic Congestion in the Jabodetabek Area
Authors: Lana Yuda Safri , Sjamsoeddin Sjafrie , Ansori Ansori 
Published: January 2024

High vehicle growth in Jakarta is not balanced with traffic growth, the level of congestion in Jakarta continues to increase every year. To overcome this congestion, innovation is needed to utilize the river as a means of public transportation. The amphibious bus is an alternative public transportation option in the Jabodetabek area to break congestion. The amphibious bus design must be supported by a propulsion system that can operate on land and water. The amphibious bus propulsion system is a must, according to river conditions and operational requirements. The selection of the drive system is carried out by means of analysis The driving criteria factors needed according to the specifications of the amphibious bus are power, efficiency, size, cost, and maneuverability. These criteria become indicators in determining the type of mover. This study aims to select the prime mover system based on criteria and specification requirements. The selection uses the process hierarchy analysis (AHP) method by giving weight to the criteria for each driver, and type of mover in the water, namely waterjets, azimuth-podded, Paddle Wheels, Cycloidal Propellers and propulsion on land diesel engines, gasoline engines, and electric engines. The results showed that the order of the propulsion selection criteria was propulsion power being the top priority, followed by maneuverability, energy efficiency, cost, operational and investment, and propulsion size and weight. The results of the AHP show that the main options are propulsion systems in water, namely waterjets and diesel engine propulsion systems on land. System Water Jet has a propulsion power of 1000 kW, has high maneuverability, energy efficiency of 85%, and a maximum speed of 60 Km/hour so it can meet the specifications of an amphibious bus drive. For operations on land, the main choice of propulsion system for amphibious buses is a diesel engine with a power of 250 HP and 800 Nm of torque providing strong torque and a wide cruising range. This system has a range of up to 800 km, a maximum speed of 120 km/h, and exhaust emissions of Euro 5.
The Relationship Between Knowledge Risk Management and Sustainable Organizational Performance: The Mediating and Moderating Role of Leadership Behavior
Authors: Akinsola Gbenga Daniel , Farmanesh Panteha , Mwamba Nyota Madhy 
Published: January 2024

Abstract
Despite the vital role of organizations’ knowledge management and its diverse influence on achieving sustainable organizational performance (SOP), as well as the impact of leadership behavior (LB), it is remarkable that no previous study has addressed this subject matter comprehensively. As a result, this study aims to investigate the relationship between SOP and knowledge risk management (KRM) while examining the role of LB. It adopts a quantitative approach and gathers data from Nigerian companies through an online questionnaire distributed between November 2019 and September 2020. Structural equation modeling (SEM) is utilized to test the hypotheses. Remarkably, no prior research has inspected the mediating and moderating role of LB in the connection between SOP and KRM until this study. Empirical results indicate that: (i) LB and KRM positively influence SOP; (ii) KRM has a positive impact on LB; (iii) LB moderates the relationship between KRM and SOP; and (iv) LB serves as a mediator between KRM and SOP. The findings of this empirical research will enhance managers’ understanding of the significance of LB in the relationship between KRM and SOP.
Quantitative analysis of the β-1 structure in lignin by administration of [ring-1-13C]coniferin
Authors: Imamura Shori , Hosokawa Masaki , Matsushita Yasuyuki , Aoki Dan , Fukushima Kazuhiko , Katahira Masato 
Published: January 2024

Abstract
Lignin dimeric units are characterized by various inter-unit linkage types such as β-O-4, β-5, β-β, and β-1. Spirodienones are the native form of the β-1 structures, but the content in lignin has not been clarified. In this study, the ring-1-13C labeled coniferin was synthesized and administered to Ginkgo biloba shoots, obtaining ring-1 selectively labeled xylem samples. Enzymatically saccharified lignin (EL) samples were prepared from the xylem sample (400–600 µm distant region from the cambial zone), and solution-state quantitative 13C NMR and solid-state CP/MAS NMR measurements were conducted. Acetylated EL (ELAc) was also prepared from the xylem sample (600–800 µm distant region from the cambial zone), and solution-state quantitative 13C NMR and 1H–13C 2D NMR measurements were conducted. Difference spectra obtained by subtracting the unlabeled spectra from the ring-1 labeled spectra showed that the ring-1 was responsible for broad signals at 134 ppm and signals of the spirodienone structure at 56.11 ppm (in solid-state), 54.70 ppm (EL in solution-state), and 54.72 ppm (ELAc in solution-state). The ratio of spirodienone structure was evaluated as 0.68 % (EL) and 0.72 % (ELAc) by the solution-state quantitative 13C difference spectra, and 2.3 % (ELAc) by HSQC volume ratio of Cα′-H to G2-H.
Electrical modelling, design, and implementation of a hardware PEM electrolyzer emulator for smart grid testing
Authors: Koundi Mohamed , El Fadil Hassan , El Idrissi Zakariae , Lassioui Abdellah , Bouanou Tasnime , Nady Soukaina , Rachid Aziz , Hilmani Adil 
Published: January 2024

Abstract
The high cost and complexity of Proton Exchange Membrane (PEM) electrolyzers pose substantial challenges for their integration and testing within smart grid emulators. Addressing this, our research offers two pivotal contributions. First, we introduce an innovative Equivalent Electrical Circuit (EEC) for PEM electrolyzers. This electrical model serves as an essential tool for evaluating the performance of PEM electrolyzers, especially within the framework of renewable energy systems in smart grids. Our second major contribution is the design and implementation of a hardware PEM electrolyzer emulator based on a DC/DC boost converter. Unlike conventional approaches, our emulator accurately reproduces the nonlinear polarization curve and dynamic behavior of PEM electrolyzers under a large range of operating conditions. By seamlessly integrating into a smart grid emulator, it provides an environment for efficient and cost-effective testing of PEM electrolyzers. Experimental results offer strong validation of the emulator’s ability to replicate the characteristics of the PEM electrolyzer, establishing it as a practical alternative for evaluating and improving smart grid emulators and their management strategies.
Complement-targeted therapy for autoimmune diseases
Authors: Chu Cong-Qiu 
Published: January 2024

Abstract
The success and safety seen in treating complement-mediated hemolysis conditions has sparked the development of targeted therapies for rare autoimmune diseases, with expansion to more common autoimmune conditions. Various classes of drugs, including small molecules, peptides, monoclonal antibodies, and small interfering RNA (siRNA), are undergoing development to specifically address complement activity. A dual approach targeting both complement and other immune components may be required for autoimmune diseases characterized by inflammation and complex pathogenic mechanisms. siRNA, which suppresses complement production, is emerging as a potent therapeutic tool. Combining a complement-blocking siRNA drug with a treatment that reduces autoantibodies could prove clinically feasible and impactful in managing these conditions.
Topological n-root Su–Schrieffer–Heeger model in a non-Hermitian photonic ring system
Authors: Viedma David , Marques Anselmo M. , Dias Ricardo G. , Ahufinger Verònica 
Published: January 2024

Abstract
Square-root topology is one of the newest additions to the ever expanding field of topological insulators (TIs). It characterizes systems that relate to their parent TI through the squaring of their Hamiltonians. Extensions to 2
n
-root topology, where n is the number of squaring operations involved in retrieving the parent TI, were quick to follow. Here, we go one step further and develop the framework for designing general n-root TIs, with n any positive integer, using the Su–Schrieffer–Heeger (SSH) model as the parent TI from which the higher-root versions are constructed. The method relies on using loops of unidirectional couplings as building blocks, such that the resulting model is non-Hermitian and embedded with a generalized chiral symmetry. Edge states are observed at the n branches of the complex energy spectrum, appearing within what we designate as a ring gap, shown to be irreducible to the usual point or line gaps. We further detail on how such an n-root model can be realistically implemented in photonic ring systems. Near perfect unidirectional effective couplings between the main rings can be generated via mediating link rings with modulated gains and losses. These induce high imaginary gauge fields that strongly suppress couplings in one direction, while enhancing them in the other. We use these photonic lattices to validate and benchmark the analytical predictions. Our results introduce a new class of high-root topological models, as well as a route for their experimental realization.
Fundamental limits to multi-functional and tunable nanophotonic response
Authors: Shim Hyungki , Kuang Zeyu , Lin Zin , Miller Owen D. 
Published: January 2024

Abstract
Tunable and multi-functional nanophotonic devices are used for applications from beam steering to sensing. Yet little is understood about fundamental limits to their functionality. The difficulty lies with the fact that it is a single structure that must exhibit optimal response over multiple scenarios. In this article, we present a general theoretical framework for understanding and computing fundamental limits to multi-functional nanophotonic response. Building from rapid recent advances in bounds to light–matter interactions, we show that after rewriting the design problems in terms of polarization fields, the introduction of suitable cross-correlation constraints imposes the crucial “single-structure” criteria. We demonstrate the utility of this approach for two applications: reflectivity contrast for optical sensing, and maximum efficiency for optical beam switching. Our approach generalizes to any active or multi-functional design in linear optics.
Direct electron beam patterning of electro-optically active PEDOT:PSS
Authors: Doshi Siddharth , Ludescher Dominik , Karst Julian , Floess Moritz , Carlström Johan , Li Bohan , Mintz Hemed Nofar , Duh Yi-Shiou , Melosh Nicholas A. , Hentschel Mario , Brongersma Mark , Giessen Harald 
Published: January 2024

Abstract
The optical and electronic tunability of the conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has enabled emerging applications as diverse as bioelectronics, flexible electronics, and micro- and nano-photonics. High-resolution spatial patterning of PEDOT:PSS opens up opportunities for novel active devices in a range of fields. However, typical lithographic processes require tedious indirect patterning and dry etch processes, while solution-processing methods such as ink-jet printing have limited spatial resolution. Here, we report a method for direct write nano-patterning of commercially available PEDOT:PSS through electron-beam induced solubility modulation. The written structures are water stable and maintain the conductivity as well as electrochemical and optical properties of PEDOT:PSS, highlighting the broad utility of our method. We demonstrate the potential of our strategy by preparing prototypical nano-wire structures with feature sizes down to 250 nm, an order of magnitude finer than previously reported direct write methods, opening the possibility of writing chip-scale microelectronic and optical devices. We finally use the high-resolution writing capabilities to fabricate electrically-switchable optical diffraction gratings. We show active switching in this archetypal system with >95 % contrast at CMOS-compatible voltages of +2 V and −3 V, offering a route towards highly-miniaturized dynamic optoelectronic devices.
High-entropy alloys: A review of their performance as promising materials for hydrogen and molten salt storage
Authors: Pineda Fabiola , Martínez Carola , Martin Pablo , Aguilar Claudio 
Published: January 2024

Abstract
Fossil fuels have been the most employed energy source with a consistent and growing consumption; however, they will be replaced by renewable energy sources (RESs). Massively using this type of energy will require new materials, especially metallic-based materials, because the typical materials have shown poor performance. In particular, hydrogen obtained from RESs has technological concerns like absorption/desorption cycling, kinetics, and cost. Similarly, the solar industry demands highly corrosion-resistant materials at high temperatures. As mentioned above, these could be solved using high-entropy alloys (HEAs). HEAs are barely around 15 years old and have been intensively investigated to be used for wide technological and scientific applications due to their unusual mechanical, physical, and chemical properties. Thus, this study summarizes advances in HEAs as promising materials for hydrogen and energy molten salt storage technologies and discusses the corrosion performance of current HEAs, considering both the microstructure and constituent element effect.
Cu2ZnSnS4/N-MWCNTs hybrid systems as counter electrode substitutes for platinum in dye-sensitized solar cells
Authors: Mxakaza Lineo , Ngubeni Grace , Moloto Nosipho , Tetana Zikhona 
Published: January 2024

AbstractCopper zinc tin sulfide, Cu2ZnSnS4 (CZTS) is being considered a viable option for a counter electrode due to its abundance, cost-effectiveness, catalytic activity, and other advantageous properties. However, CZTS has low electron transport capabilities, a shortcoming that can be addressed by combining it with high electron mobility carbon nanomaterials. Nitrogen-doped multi-walled carbon nanotubes (N-MWCNTs) exhibit higher electron conductivities than their pristine counterparts. This improvement is attributed to the disruption of the sp2-hybridized carbon arrangement, as some of the carbon atoms are replaced by nitrogen atoms. In this study, a counter electrode composed of a 70% CZTS and 30% N-MWCNTs mixture produced a higher electrochemical current density compared to the individual materials. This suggests that it is more electrocatalytic than CZTS and N-MWCNTs alone, ultimately leading to the highest power conversion efficiency of 6.52%.
Graphical abstract