bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tests of linear hypotheses using indirect information
Authors: McCormack Andrew , Hoff Peter D. 
Published: February 2023

AbstractIn multigroup data settings with small within‐group sample sizes, standard ‐tests of group‐specific linear hypotheses can have low power, particularly if the within‐group sample sizes are not large relative to the number of explanatory variables. To remedy this situation, in this article we derive alternative test statistics based on information sharing across groups. Each group‐specific test has potentially much larger power than the standard ‐test, while still exactly maintaining a target type I error rate if the null hypothesis for the group is true. The proposed test for a given group uses a statistic that has optimal marginal power under a prior distribution derived from the data of the other groups. This statistic approaches the usual ‐statistic as the prior distribution becomes more diffuse, but approaches a limiting “cone” test statistic as the prior distribution becomes extremely concentrated. We compare the power and ‐values of the cone test to that of the ‐test in some high‐dimensional asymptotic scenarios. An analysis of educational outcome data is provided, demonstrating empirically that the proposed test is more powerful than the ‐test.
Distributed sequential estimation procedures
Authors: Chen Zhuojian , Wang Zhanfeng , Chang Yuan‐chin Ivan 
Published: February 2023

AbstractData collected from distributed sources or sites commonly have different distributions or contaminated observations. Active learning procedures allow us to assess data when recruiting new data into model building. Thus, combining several active learning procedures together is a promising idea, even when the collected data set is contaminated. Here, we study how to conduct and integrate several adaptive sequential procedures at a time to produce a valid result via several machines or a parallel‐computing framework. To avoid distraction by complicated modelling processes, we use confidence set estimation for linear models to illustrate the proposed method and discuss the approach's statistical properties. We then evaluate its performance using both synthetic and real data. We have implemented our method using Python and made it available through Github at https://github.com/zhuojianc/dsep.
Fabrication of Nanoparticle‐Doped Polyvinyl Alcohol‐Cellulose Acetate Membrane and Characterization of the Surface Enhancement
Authors: Ravichandran Sathish Raam , Venkatachalam Chitra Devi , Sengottian Mothil , Sekar Sarath , Subramaniam Ramasamy Bhavya Shri , Elangovan Sakthivel , Thorali Sivakumar Siddharth , Subramanian Shanmuga Sundaram 
Published: February 2023

AbstractIn the present study, nanocomposite polymeric membranes are fabricated using polyvinyl alcohol (PVA), cellulose acetate (CA) as polymers, and dimethyl sulfoxide (DMSO) as the solvent. To enhance the performance of the membrane, nanoparticles like TiO2, CaO, CdO, and ZrO are added to the polymeric solution and the doped polymeric solution is cast on a glass plate. Nine combinations of membranes are fabricated with two different concentrations (0.1% and 0.2%) of nanoparticles. The basic properties of the membranes such as density, porosity, viscosity, permeability, pure water flux, and water content are studied for the samples. Membrane pore structure and surface properties are identified and it is found that doping nanoparticles on the surface of membranes improve mechanical strength, stability, pore size, etc., allowing the membranes to perform better in extreme industrial‐level effluent treatment applications. High‐resolution scanning electron microscopy (SEM) shows the homogeneous dispersion of ZrO, TiO2, CaO, and CdO nanoparticles on the surface of the PVA‐CA membrane. The doping of nanoparticles on the PVA‐CA membrane results in improved mechanical strength and good chemical oxidation stability. In comparison, the PCD‐TiO2 sample shows high thermal stability and oxidation stability at high temperatures until 200°C, which has a high potential for treating industrial effluents.
Recent Development of Copper (II) Complexes of Polypyridyl Ligands in Chemotherapy and Photodynamic Therapy
Authors: Rani J Jansi , Roy Sovan 
Published: February 2023

AbstractCancer is a deadly disease associated with abnormal cell growth and invasion to various parts of the body. Many drugs such as cisplatin and carboplatin have been used for the treatment of cancer over the years. However, a lack of selectivity toward cancer cells and associated side effects with current treatment options has fueled continued efforts throughout the world to find better anticancer drugs. Over the past decades, copper‐containing compounds have shown excellent anticancer activity. Cu(II) complexes are well studied and show broad‐spectrum pharmacological activity. The redox activity of copper ions contributes to cytotoxic activity in combination with ligands that possess bioactivity. Binding of copper with various types of bidentate, tridentate, and tetradentate ligands can activate the processes of necrosis, apoptosis, and angiogenesis. Copper induces the formation of reactive oxygen species to cleave DNA. Similarly, light‐assisted excitation of Cu(II) complexes in the red region of the electromagnetic spectrum helps produce different reactive species, thereby inducing anticancer activity through a photodynamic mechanism. In general, in vivo and in vitro studies have demonstrated that the administration of copper ions is effective against various cancer cell lines. Herein we discuss the past ten years of research into copper complexes of terpyridine‐, 2,2’‐bipyridine‐, and 1,10‐phenanthroline‐based ligands as potential anticancer agents. The aspects of chemotherapy by redox‐mediated pathways and photodynamic therapy using light‐assisted excitation are reviewed, with a focus on mechanisms of activity, details of important experimental procedures, as well as drawbacks in the design of copper‐containing drugs.
Terpyridine Glycoconjugates and Their Metal Complexes: Antiproliferative Activity and Proteasome Inhibition
Authors: Panebianco Roberta , Viale Maurizio , Loiacono Fabrizio , Lanza Valeria , Milardi Danilo , Vecchio Graziella 
Published: February 2023

AbstractMetal terpyridine complexes have gained substantial interest in many application fields, such as catalysis and supramolecular chemistry. In recent years, the biological activity of terpyridine and its metal complexes has aroused considerable regard. On this basis, we synthesised new terpyridine derivatives of trehalose and glucose to improve the water solubility of terpyridine ligands and target them in cancer cells through glucose transporters. Glucose derivative and its copper(II) and iron(II) complexes showed antiproliferative activity. Interestingly, trehalose residue reduced the cytotoxicity of terpyridine. Moreover, we tested the ability of parent terpyridine ligands and their copper complexes to inhibit proteasome activity as an antineoplastic mechanism.
Accounting going green: The move toward environmental sustainability in Vietnamese manufacturing firms
Authors: Hoai Tu Thanh , Minh Nha Nguyen , Van Hien Vo , Nguyen Nguyen Phong 
Published: February 2023

AbstractThis study investigates how environmental management accounting (EMA) usage mediates the impact of green dynamic capabilities on environmental performance. Furthermore, the moderating effects of green mindfulness on the relationship between green dynamic capabilities and EMA usage are investigated. The proposed model and its hypotheses are evaluated using partial least squares structural equation modeling (PLS‐SEM) with survey data from 394 large Vietnamese manufacturing firms. The study's findings are as follows: (1) green dynamic capabilities positively affect EMA usage, which, in turn, affects environmental performance; (2) when green mindfulness is strong, the effect of green dynamic capabilities on EMA usage is amplified. These findings demonstrate how the interaction between green dynamic capabilities and green mindfulness can contribute to the success of manufacturing firms that use EMA systems in emerging markets. Additionally, the current study elucidates the mechanism by which green dynamic capabilities influence EMA usage, and it aims to contribute to green dynamic capabilities research in accounting by introducing green mindfulness as a boundary condition.
Intelligent wide‐area damping controller for static var compensator considering communication delays
Authors: Jamsheed Faisal , Javed Iqbal Sheikh 
Published: February 2023

SummaryThis paper utilizes a static var compensator in coordination with an intelligent online controller, to enhance the oscillation damping of the power system at various operating conditions and communication delays. For system identification, a linear identifier is used that ensures a low computational burden and facilitates its real‐time implementation. This identifier accurately estimates the system's local linear model using local measurements and continuously updates its parameters in real time to account for system's changing operational states. The learning rate of the identifier is also adaptively adjusted such that the stability of the learning algorithm and optimal speed of convergence are guaranteed. The location of the controller is selected based upon the controllability and bus voltage participation factors, and an effective feedback signal is obtained using the observability. An empirical expression has also been proposed to offset the effects of communication time delays caused due to use of wide‐area signals. Time‐domain simulations are performed on single‐ and multi‐machine power systems to check the efficacy of the proposed intelligent controller. The performance of the controller is compared with the residue‐based conventional controller and also with the recently proposed wide‐area damping controller.
A wireless power transfer system for an autonomous underwater vehicle based on lightweight universal variable ring‐shaped magnetic coupling
Authors: Zhang Ben , Wang Xudong , Lu Changbo , Lu Yong , Xu Wanli 
Published: February 2023

SummaryThe existing wireless power transfer systems for autonomous underwater vehicles (AUVs) have problems due to long transmission distances and the unstable attitudes of AUVs, which result in poor system performance. To solve this problem, this paper proposes a lightweight universal variable ring‐shaped magnetic coupler for the shape characteristics of AUVs and the charging platform environment. In particular, the size of the magnetic coupler transmitter can be varied according to the size of the AUV, resulting in a close fit between the magnetic coupler transmitter and receiver, reducing the transmission distance and fixing the AUV attitude. To achieve a lightweight receiver and reduce the burden on the AUV, the design is optimized in terms of both the system topology and the magnetic coupler structure. First, the LCC‐S topology is used to reduce the number of components on the secondary side. Second, the use of a nanocrystalline ribbon as the core material effectively reduces the weight of the magnetic coupler receiver. Finally, a 300‐W experimental platform is built to verify the functionality of the designed magnetic coupler. The experimental results show that the system has a DC‐DC transfer efficiency of 86%. With the variable ring‐shaped magnetic coupler, the charging power can be increased by 7.2% when the transmission efficiency remains unchanged.
Usefulness of cell block examination for the cytological diagnosis of thoracic SMARCA4‐deficient undifferentiated tumor: A case report
Authors: Minoshima Atsushi , Sugita Shintaro , Segawa Keiko , Aoyama Tomoyuki , Ito Mikako , Daimon Fuminori , Takenami Tomoko , Kido Tomomi , Moriya Jun , Nishikiori Hirotaka , Hasegawa Tadashi 
Published: February 2023

AbstractSMARCA4‐deficient undifferentiated tumor (SMARCA4‐UT) is a high‐grade malignant neoplasm showing undifferentiated or rhabdoid morphology that significantly involves the thorax of adults. It has been reported as SMARCA4‐deficient thoracic sarcoma or SMARCA4‐deficient non‐small cell lung carcinoma according to the findings of immunohistochemical and genetic studies. We report a case of thoracic SMARCA4‐UT for which cell block analysis and immunohistochemical staining were useful for the final diagnosis. A 51‐year‐old man had a chief complaint of left back pain and visited our hospital for further examination. Cytological examination of a left pleural effusion was performed and we also made a cell block of the pleural effusion. Cytological examination revealed polyhedral to round tumor cells. The tumor cells appeared singly or formed loosely cohesive clusters. The nuclei were round to oval, enlarged, and sometimes eccentric with prominent nucleoli with irregular borders. The nuclear chromatin was unevenly distributed. The cytoplasm was vacuolar to eosinophilic. There were no characteristic structures of tumor cells. The cell block revealed many single or loosely cohesive round to epithelioid cells. Some tumor cells often exhibited eccentrically located nuclei and lightly eosinophilic cytoplasm, showing a rhabdoid morphology. On immunohistochemistry, the tumor cells were positive for SOX‐2 and they demonstrated significantly reduced SMARCA4 (BRG1) expression; SMARCA2 (BRM) and SMARCB1 (INI1) expression were retained. Accordingly, we made a diagnosis of SMARCA4‐UT. This case demonstrates the importance of performing histological and immunohistochemical analysis using cell blocks for immediate diagnosis.
Long‐term macrophyte and snail community responses to population declines of invasive rusty crayfish (Faxonius rusticus)
Authors: Szydlowski Daniel K. , Elgin Ashley K. , Lodge David M. , Tiemann Jeremy S. , Larson Eric R. 
Published: February 2023

AbstractA central focus of invasive species research has been on human efforts to eradicate invaders or reduce their abundance to mitigate the worst of their impacts. In some cases, however, populations of invasive species decline without human intervention, which may inform management responses to these invaders. Such is the case of the invasive rusty crayfish (Faxonius rusticus) in northern Wisconsin, USA, where systematic population monitoring since 1975 has revealed population declines in approximately half of the lakes surveyed. Population declines of invasive species without human intervention remain understudied, but there is even less research on how communities respond following such declines. Using 10 lakes in Vilas County, Wisconsin, we investigated community recovery of habitat (macrophytes) and prey (freshwater snails) of F. rusticus following up to 33 years of declines of this invader in some lakes using a dataset with a rare, long‐term span over which consistent data were collected (1987, 2002, 2011, and 2020). We compared community responses in lakes where F. rusticus populations reached a peak and subsequently declined (boom‐bust lakes) and lakes where our dataset only captured the decline of F. rusticus (bust lakes) to reference lakes with consistently high or low crayfish abundance over time. We found partial recovery of macrophytes and snails in the bust and boom‐bust lakes where F. rusticus has declined, with recovery of macrophyte abundance and richness in the boom‐bust lakes achieving levels observed in the low‐crayfish reference lakes. Snail abundance and richness increased after declines of F. rusticus, though not to the level of the low‐crayfish reference lakes, suggesting that snail recovery may lag macrophyte recovery because snails are dependent on macrophytes and associated periphyton for habitat. The recovery we document potentially represents long‐term ecosystem resilience of lakes to biological invasions. Our results suggest that lake communities may recover without active restoration interventions after invasive crayfish population declines, although identifying which lakes experience these natural declines remains a priority for future research and management.
Analysis of terahertz double dielectric structure patch antenna using nitride semiconductors
Authors: Miura Shin , Kurahashi Kenta , Goshima Keishiro , Nagase Masanori 
Published: February 2023

AbstractRecently, gallium arsenide (GaAs)‐based resonant tunneling diode (RTD) oscillators and indium phosphorus (InP)‐based Schottky barrier diode (SBD) receivers have been studied in the terahertz (THz) band. The THz devices for practical use should operate at room temperature, be small in size, and have high output power. Therefore, this study was focused on gallium nitride (GaN), which possesses excellent material properties, such as wide bandgap characteristics and heteroepitaxy on Si substrates. The GaN‐based oscillators and receivers are expected to be compact, operate at room‐temperature, and act as a high‐power device for the THz‐band devices. However, GaN has crystal defects, which can cause instability in device operations. A double dielectric structure patch antenna composed of Silicon Nitride (SiN) and Benzo Cyclo Butene (BCB) with different dielectric constants was proposed to realize a GaN‐based THz transmitter and receiver. The antenna characteristics were investigated using the Finite Difference Time Domain (FDTD) method. The results showed that the SiN has little effect on the radiation, whereas the BCB is strongly responsible for the radiation. Comparing the absolute gain between the double dielectric structure and the conventional structure using the SiN, it was confirmed that the double dielectric structure can improve the absolute gain.
Shoreline hardening affects species composition and condition of larval fishes in the Yangtze River: Implications for conservation and inshore habitat restoration
Authors: Wang Zhen , Cao Juan , Cheng Fei , Keckeis Hubert , Xie Songguang 
Published: February 2023

AbstractInshore habitats play a crucial role in the downstream drift of larval fish in large rivers. Natural inshore habitats of most of the world's large rivers have been heavily degraded by shoreline stabilization measures, but the knowledge about consequences for the condition and distribution of larval fishes is extremely limited. Investigations during the peak season of larval drift into species composition as well as into feeding intensity and body injuries of representative taxa were conducted at different inshore mesohabitats along semi‐natural and stabilized shores in a free‐flowing section in the middle Yangtze River. Species were unambiguously identified by a combination of DNA barcoding and morphological analyses. Overall, 37 taxa from seven families were detected from a total of 9,915 fish larvae caught. Earlier developmental stages greatly outnumbered the later stages in diversity and abundance in each investigated mesohabitat. Abundance and assemblage structure as well as the body injury rate differed significantly between mesohabitats. Generally, overall species richness and abundance tended to be lower, and divergence of the assemblage and body injury rates tended to be higher at heavily hardened shores, which could be contributed to the poor riparian vegetation and restricted suitable hydraulic conditions there. Our results may reflect the underestimated impact of inshore habitat degradation on larval fishes and highlight the demand for creating adequate areas of shallow and slow‐flow habitats with good riparian vegetation conditions along the shores. These measures will foster an appropriate connectivity between spawning areas and high‐quality nurseries for larval fishes.
One‐year‐long evaluation of non‐rainfall water available to soil biocrusts in the Negev Highlands
Authors: Kidron Giora J. , Kronenfeld Rafael 
Published: February 2023

AbstractSoil biocrusts abound in deserts, but yet little agreement exists regarding their water sources. Most researchers regard non‐rainfall water (NRW), particularly dew as an important water source for soil biocrusts, but nevertheless, evidence from the Negev suggests that following the nocturnal soil heat efflux, NRW is drastically reduced. The possible contribution of NRW to 3‐ to 5‐mm‐tall lichens, which are less impacted by the warm nocturnal surface temperatures, poses an additional challenge. For this end, NRW obtained by cloths attached to the soil surface and cloths located at a 5‐mm height above ground were measured, accompanied by periodic temperature measurements. As for the cyanobacteria and the 1‐mm‐tall lichens, NRW did not reach the necessary threshold required for the performance of net photosynthesis by cyanobacterial (0.1 mm) or chlorolichens (0.05 mm) but was occasionally reached at 5‐mm height above ground. Nevertheless, when the average amount obtained at 1‐mm intervals (mimicking the length of the lichen thallus) along the 5‐mm height was calculated, it either fell below the necessary threshold or was too low during daytime to compensate for the carbon loss during nighttime respiration. The apparent incapability of NRW to provide sufficient water to sustain the 3‐ to 5‐mm‐tall lichens in the Negev Highlands is supported by the confinement of these lichens to north‐facing rock terraces (ledges), where they may benefit from additional water through runoff. One may therefore conclude that NRW may not be regarded as a meaningful water source for the Negev biocrusts, whether composed of cyanobacteria or of 1‐ to 5‐mm‐tall lichens.
Applying a two‐dimensional hydrodynamic model to estimate fish stranding risk downstream from a hydropeaking hydroelectric station
Authors: Glowa Sarah E. , Kneale Andrea J. , Watkinson Douglas A. , Ghamry Haitham K. , Enders Eva C. , Jardine Timothy D. 
Published: February 2023

AbstractFish stranding is of global concern with increasing hydropower operations using hydropeaking to respond to fluctuating energy demand. Determining the effects hydropeaking has on fish communities is challenging because fish stranding is dependent on riverscape features, such as topography, bathymetry and substrate. By using a combination of physical habitat assessments, hydrodynamic modelling and empirical data on fish stranding, we estimated the number of fish stranding over a 5‐month period for three model years in a large Prairie river. More specifically, we modelled how many fish potentially stranded during the years 2019, 2020 and 2021 across a 16 km study reached downstream from E.B. Campbell Hydroelectric Station on the Saskatchewan River, Canada. Fish stranding densities calculated from data collected through remote photography and transect monitoring in 2021 were applied to the daily area subject to drying determined by the River2D hydrodynamic model. The cumulative area subject to change was 90.05, 53.02 and 80.74 km2for years 2019, 2020 and 2021, respectively, from June to October. The highest number of stranded fish was estimated for the year 2021, where estimates ranged from 89,800 to 1,638,000 individuals based on remote photography and transect monitoring fish stranding densities, respectively, 157 to 2,856 fish stranded per hectare. Our approach of estimating fish stranding on a large scale allows for a greater understanding of the impact hydropeaking has on fish communities and can be applied to other riverscapes threatened by hydropeaking.