bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multichannel design and pricing in vertically differentiated expert service markets
Authors: Du Shaofu , Peng Xuefeng , Nie Tengfei , Zhu Yangguang 
Published: May 2023

AbstractExpert service providers, such as lawyers, physicians, and designers, are considering whether to employ the multichannel, which consists of online and offline channels. Multichannel strategy arises two contrary effects: the cannibalization effect and the complementary effect. This paper models expert service markets where the seller (two sellers) considers whether and how to optimally design the multichannel service. We find that the multichannel strategy dominates the traditional channel in the monopoly context; however, multichannel may be overwhelmed by the traditional channel in the vertically differentiated market. Moreover, the low‐quality seller may provide a higher‐capability online channel than the high‐quality seller.
Subthalamic Nucleus Activity during Cognitive Load and Gait Dysfunction in Parkinson's Disease
Authors: Georgiades Matthew J. , Shine James M. , Gilat Moran , McMaster Jacqueline , Owler Brian , Mahant Neil , Lewis Simon J.G. 
Published: May 2023

AbstractBackgroundGait freezing is a common, disabling symptom of Parkinson's disease characterized by sudden motor arrest during walking. Adaptive deep brain stimulation devices that detect freezing and deliver real‐time, symptom‐specific stimulation are a potential treatment strategy. Real‐time alterations in subthalamic nucleus firing patterns have been demonstrated with lower limb freezing, however, whether similar abnormal signatures occur with freezing provoked by cognitive load, is unknown.MethodsWe obtained subthalamic nucleus microelectrode recordings from eight Parkinson's disease patients performing a validated virtual reality gait task, requiring responses to on‐screen cognitive cues while maintaining motor output.ResultsSignal analysis during 15 trials containing freezing or significant motor output slowing precipitated by dual‐tasking demonstrated reduced θ frequency (3–8 Hz) firing compared to 18 unaffected trials.ConclusionsThese preliminary results reveal a potential neurobiological basis for the interplay between cognitive factors and gait disturbances including freezing in Parkinson's disease, informing development of adaptive deep brain stimulation protocols. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Mutual coupling reduction between closely spaced patch antennas using complementary electric‐field‐coupled resonators
Authors: Odabasi Hayrettin , Turan Goksel , Salimitorkamani Mahdi 
Published: May 2023

AbstractThis article presents mutual coupling reduction results between closely placed ‐coupled patch antennas using complementary electric field coupled (CELC) resonators. CELC elements are excited by the guided magnetic field and exhibit magnetic resonance. Two configurations are designed, analyzed, and fabricated, with one of them having edge‐to‐edge distance and the other having ( is the free space wavelength for the center frequency). Maximum isolation enhancement of about dB and an average of about dB are achieved in measurement for both designs, respectively. Radiation pattern results show no significant change in both co/cross‐polarization. Excellent agreement is achieved between the simulation and measurement results. The proposed structure is etched on the top plate of the substrate and does not involve a complicated fabrication process or any ground plane modification. The proposed design can be used for mutual coupling reduction of ‐plane coupled array antennas.
Non‐invasive ventilation usage and adherence in children and adults with Duchenne muscular dystrophy: A multicenter analysis
Authors: Hurvitz Manju , Sunkonkit Kanokkarn , Defante Andrew , Lesser Daniel , Skalsky Andrew , Orr Jeremy , Chakraborty Abhishek , Amin Reshma , Bhattacharjee Rakesh 
Published: May 2023

AbstractIntroduction/AimsNon‐invasive ventilation (NIV) is routinely prescribed to support the respiratory system in Duchenne muscular dystrophy (DMD) patients; however, factors improving NIV usage are unclear. We aimed to identify predictors of NIV adherence in DMD patients.MethodsThis was a multicenter retrospective analysis of DMD patients prescribed NIV and followed at (1) The Hospital for Sick Children, Canada; (2) Rady Children's Hospital San Diego, USA; and (3) University of California San Diego Health, USA, between February 2016 and October 2020. The primary and secondary outcomes were 90‐day period NIV adherence and clinical and socioeconomic predictors of NIV adherence.ResultsWe identified 59 DMD patients prescribed NIV (mean ± SD age = 20.1 ± 6.7 y). Overall, percentage of nights used, and average nightly usage, were 79.9 ± 31.1% and 7.23 ± 4.12 h, respectively. Compared with children, adults had higher percentage of nights used (92.9 ± 16.9% vs. 70.4 ± 36.9%; P < .05), and average nightly usage (9.5 ± 4.7 h vs. 5.3 ± 3.7 h; P < .05). Non‐English language (P = .01), and absence of deflazacort prescription (P = .02) were significantly associated with higher percentage of nights used while Hispanic ethnicity (P = .01), low household income (P = .02), and absence of deflazacort prescription (P = .02) were significantly associated with higher nightly usage. Based on univariable analysis, older age and declining forced vital capacity were associated with increased percentage of nights used and increased average nightly usage.DiscussionCertain clinical and socioeconomic determinants had a significant impact on NIV adherence in DMD patients, providing insight into those at risk for high versus low compliance with respiratory therapy.
Association between respiratory disease and stress urinary incontinence: An analysis of the 2015−2020 National Health and Nutrition Examination Survey
Authors: Zhu Michael , Sim Jasper , Okada Chihiro , Kim Joseph , Abraham Nitya 
Published: May 2023

AbstractIntroductionThere is a logical association between chronic obstructive pulmonary disease (COPD) or asthma with stress urinary incontinence (SUI), given the propensity for coughing which increases intra‐abdominal pressure. However, there are few studies examining the association between COPD or asthma and specifically SUI. We aimed to utilize the National Health and Nutrition Examination Survey (NHANES) data from 2015 to 2020 to measure the association between respiratory diseases like COPD and asthma with SUI.MethodsData was collected from NHANES, a database representative of the United States population. Participants were included if they were female, older than 20 years, and completed the incontinence survey question. Self‐reported history of asthma and COPD diagnosis from a physician, as well as history of incontinence associated with activities such as coughing, lifting, or exercise, were collected. Characteristics of participants were compared using χ2 and Student t‐tests. Multivariable logistic regression was performed using a multimodel approach to adjust for sociodemographic and health‐related covariates.ResultsA total of 9059 women were included in this study. 42.13% reported an episode of SUI in the past year, 6.29% had a COPD diagnosis, and 11.86% had an asthma diagnosis. In the unadjusted analysis, participants with COPD were more likely to report SUI (odds ratio [OR] 3.42, 95% confidence interval [CI] 2.13−5.49, p < 0.001); this association persisted on multivariable analysis (OR 2.87, 95% CI 1.46−5.60, p = 0.003). There was no significant association between asthma and SUI in the unadjusted (OR 1.15, 95% CI 0.96−1.38, p = 0.14) or adjusted model (OR 1.18, 95% CI 0.86−1.60, p = 0.30).ConclusionAlthough a strong association between COPD and SUI was observed, an analogous one was not found between asthma and SUI. Chronic cough may be more difficult to control with treatment or more common in those with COPD than asthma, explaining this difference. Future research should continue to explore drivers for SUI in large populations to dispel or affirm historically assumed SUI risk factors.
Quadratic covariance‐constrained filtering for linear and non‐linear systems with non‐Gaussian noises
Authors: Javanfar Elham , Rahmani Mehdi 
Published: May 2023

AbstractThis study considers a robust quadratic covariance‐constrained filtering problem for discrete time‐varying linear and non‐linear dynamic systems with non‐Gaussian noises. Non‐Gaussian noises are presumed to be unknown, bounded, and limited in a specified ellipsoidal set. In this approach, first, a general standard linear form of the filter is introduced for state estimation in linear dynamic systems. The filter gain is obtained by minimizing the upper bound of the estimation error's covariance matrix. The Lyapunov theory demonstrates the stability of this filter. Second, we extend the proposed filtering approach to non‐linear dynamic systems that are considered as a combination of linear and non‐linear terms. The Lipschitz‐like condition is assumed for the non‐linear part. A new filter structure is proposed in this case and the filter gain is obtained by the same idea to minimize the upper bound of the error's covariance matrix. Finally, four numerical examples are presented to signify the effectiveness and performance of the proposed filters for linear and non‐linear systems.
20E biosynthesis gene CYP306A1 confers resistance to imidacloprid in the nymph stage of Bemisia tabaci by detoxification metabolism
Authors: Liu Shaonan , Fu Buli , Zhang Chengjia , He Chao , Gong Peipan , Huang Mingjiao , Du Tianhua , Liang Jinjin , Wei Xuegao , Yang Jing , Yin Cheng , Ji Yao , Xue Hu , Hu Jinyu , Wang Chao , Zhang Rong , Du He , Yang Xin , Zhang Youjun 
Published: May 2023

AbstractBackgroundDifference in physiology level between the immature and mature stages of insects likely contribute to different mechanisms of insecticide resistance. It is well acknowledged that insect 20‐hydroxyecdysone (20E) plays an important role in many biological processes in the immature stage, whether 20E confers insecticide resistance at this specific stage is still poorly understood. By gene cloning, reverse transcription quantitative real‐time PCR, RNA interference (RNAi) and in vitro metabolism experiments, this study aimed to investigate the potential role of 20E‐related genes in conferring imidacloprid (IMD) resistance in the immature stage of the whitefly Bemisia tabaci Mediterranean.ResultsAfter identification of low to moderate IMD resistance in the whitefly, we found CYP306A1 of the six 20E‐related genes was overexpressed in the nymph stage of the three resistant strains compared to a laboratory reference susceptible strain, but not in the adult stage. Further exposure to IMD resulted in an increase in CYP306A1 expression in the nymph stage. These results together imply that CYP306A1 may be implicated in IMD resistance in the nymph stage of the whitefly. RNAi knockdown of CYP306A1 increased the mortality of nymphs after treatment with IMD in bioassay, suggesting a pivotal role of CYP306A1 in conferring IMD resistance in the nymph stage. Additionally, our metabolism experiments in vivo showed that the content of IMD reduced by 20% along with cytochrome P450 reductase and heterologously expressed CYP306A1, which provides additional evidence for the important function of CYP306A1 in metabolizing IMD that leads to the resistance.ConclusionThis study uncovers a novel function of the 20E biosynthesis gene CYP306A1 in metabolizing imidacloprid, thus contributing to such resistance in the immature stage of the insect. These findings not only advance our understanding of 20E‐mediated insecticide resistance, but also provide a new target for sustainable pest control of global insect pests such as whitefly. © 2023 Society of Chemical Industry.
Optical response of position dependent hybrid optomechanical system
Authors: Qayyum A. , Farooq K. , Ali Hazrat , Asghar H. M. Noor ul Huda Khan , Gilani Zaheer Abbas 
Published: May 2023

AbstractOptomechanics is a growing field of research, studies the interaction between optical field and mechanical oscillator. In this study, we theoretically analyze a hybrid system which consists of Fabry Perot cavity containing two‐level N‐ Number of atoms. The cavity having two mirrors one is fixed, and other is oscillating. The oscillating mirror has a position dependent mass, considered as effective mass. The mechanical resonator generates a nonlinear effect because it is position dependent. Dynamics of the system's operators, steady‐state solutions, and optical response of the hybrid optomechanical system are analytically calculated. Optical response in the regime of position dependent effective mass (PDEM) are the main result in this article. We deduced that position dependent parameter of the resonator not only effect the dynamics but also the optical response of the optomechanical system.
A Transmetalation Synthetic Strategy to Engineer Atomically Dispersed MnN2O2 Electrocatalytic Centers Driving High‐Performance LiS Battery
Authors: Zhang Tengfei , Luo Dengfeng , Xiao Hong , Liang Xiao , Zhang Fanchao , Zhuang Huifeng , Li Mingde , Zheng Lirong , Gao Qiuming 
Published: May 2023

AbstractSluggish sulfur redox reaction (SROR) kinetics accompanying lithium polysulfides (LiPSs) shuttle effect becomes a stumbling block for commercial application of LiS battery. High‐efficient single atom catalysts (SACs) are desired to improve the SROR conversion capability; however, the sparse active sites as well as partial sites encapsulated in bulk‐phase are fatal to the catalytic performance. Herein, high loading (5.02 wt.%) atomically dispersed manganese sites (MnSA) on hollow nitrogen‐doped carbonaceous support (HNC) are realized for the MnSA@HNC SAC by a facile transmetalation synthetic strategy. The thin‐walled hollow structure (≈12 nm) anchoring the unique trans‐MnN2O2 sites of MnSA@HNC provides a shuttle buffer zone and catalytic conversion site for LiPSs. Both electrochemical measurement and theoretical calculation indicate that the MnSA@HNC with abundant trans‐MnN2O2 sites have extremely high bidirectional SROR catalytic activity. The assembled LiS battery based on the MnSA@HNC modified separator can deliver a large specific capacity of 1422 mAh g−1 at 0.1 C and stable cycling over 1400 cycles with an ultralow decay rate of 0.033% per cycle at 1 C. More impressively, a flexible pouch cell on account of the MnSA@HNC modified separator may release a high initial specific capacity of 1192 mAh g−1 at 0.1 C and uninterruptedly work after the bending‐unbending processes.
Hybridizing Tetraglyme to Aqueous Electrolyte with Concentrated Salts Promote Intercalation of Anions on Graphite Cathode in Dual‐Ion Battery
Authors: Yang Dengyao , Watanabe Motonori , Ishihara Tatsumi 
Published: May 2023

AbstractThe amount of support salt in electrolytes determines the capacity of a dual‐ion battery (DIB), and highly concentrated electrolytes are required for developing the high energy density DIB. In this study, hybrid aqueous tetraglyme (G4) electrolyte is investigated to develop high energy density aqueous DIB that is composed of carbon and Mo6S8 for cathode and anode, respectively. Impedance measurement reveals that introduced G4 increases the activation energy of the anode; however, decreases the activation energy for anion intercalation into the carbon cathode. This decreases the activation energy resulted from the G4 molecule strongly solvated to Li+ resulting in weakening anion trapped in “contact ion pair” in concentrated aqueous electrolyte. So, hybrid G4‐aqueous electrolyte is useful for better electrochemical intercalation of anion. In addition, this hybrid electrolyte is highly stable by formation of stable solid electrode–electrolyte interphase on Mo6S8 anode and discharge capacity of 37 mAh g−1, and 72% retained capacity after 500 cycles with a high average coulombic efficiency of 93% is achieved.
Groundwater modeling of the Silala basin and impacts of channelization
Authors: Taylor Adam , Peach Denis 
Published: May 2023

AbstractA key issue in the legal case before the International Court of Justice between Bolivia and Chile concerned artificial channels in the headwater wetlands of the Silala River in Bolivia, and their impact on the river and groundwater flow rates across the international border into Chile. In pleadings before the Court, Bolivia had claimed up to 40% changes in river flow, whereas Chile had maintained that these were much smaller. This paper reviews construction of a numerical groundwater model to quantify this impact, based on the hydrogeological conceptual model presented earlier in this volume. The groundwater model domain covers the Silala River topographical catchment, plus three adjacent closed (endorheic) topographical catchments to the northeast, which together form the groundwater catchment of the Silala River. The geometry was based on a 3D geological model, constructed based on knowledge gained from several geological mapping investigations. Surface water flows were simulated within a margin of error less than the range of uncertainty associated with the flow measurements. The resulting calibrated groundwater model was used to simulate scenarios corresponding to (a) the removal of channels in the Bolivian wetlands and (b) backfilling of the channels and a small increase in ground elevation (postulated by Bolivia due to long term peat accumulation). The results of these scenarios indicate that the measures would result in a small reduction to the surface water flow over the border to Chile; for Scenario A less than 1% change in surface flows, and for Scenario B less than 3%.This article is categorized under:
Human Water > Rights to Water
Science of Water > Hydrological Processes
Human Water > Water Governance
On the number of failed components in a series–parallel system upon system failure when the lifetimes are DNID discrete random variables
Authors: Jasiński Krzysztof 
Published: May 2023

AbstractIn this paper, we study properties of a series–parallel system. The component lifetimes may be dependent and non-identically distributed (DNID) discrete random variables. We consider the number of failed components upon system failure. We derive the probability mass function and the expected value of this quantity. In addition, we find the conditional probabilities corresponding to this variate given some partial information about the system failure. We also provide a numerical example to demonstrate the theoretical results.
Augmented region of interest for untargeted metabolomics mass spectrometry (AriumMS) of multi-platform-based CE-MS and LC-MS data
Authors: Naumann Lukas , Haun Adrian , Höchsmann Alisa , Mohr Michael , Novák Martin , Flottmann Dirk , Neusüß Christian 
Published: May 2023

AbstractIn mass spectrometry (MS)-based metabolomics, there is a great need to combine different analytical separation techniques to cover metabolites of different polarities and apply appropriate multi-platform data processing. Here, we introduce AriumMS (augmented region of interest for untargeted metabolomics mass spectrometry) as a reliable toolbox for multi-platform metabolomics. AriumMS offers augmented data analysis of several separation techniques utilizing a region-of-interest algorithm. To demonstrate the capabilities of AriumMS, five datasets were combined. This includes three newly developed capillary electrophoresis (CE)-Orbitrap MS methods using the recently introduced nanoCEasy CE-MS interface and two hydrophilic interaction liquid chromatography (HILIC)-Orbitrap MS methods. AriumMS provides a novel mid-level data fusion approach for multi-platform data analysis to simplify and speed up multi-platform data processing and evaluation. The key feature of AriumMS lies in the optimized data processing strategy, including parallel processing of datasets and flexible parameterization for processing of individual separation methods with different peak characteristics. As a case study, Saccharomyces cerevisiae (yeast) was treated with a growth inhibitor, and AriumMS successfully differentiated the metabolome based on the augmented multi-platform CE-MS and HILIC-MS investigation. As a result, AriumMS is proposed as a powerful tool to improve the accuracy and selectivity of metabolome analysis through the integration of several HILIC-MS/CE-MS techniques.
Graphical Abstract
Foraging behaviour of black guillemots at three Norwegian sites during the breeding season
Authors: Dehnhard Nina , Anker-Nilssen Tycho , Johnston Daniel , Masden Elizabeth A. , Lorentsen Svein-Håkon , Christensen-Dalsgaard Signe 
Published: May 2023

AbstractThe intensification of coastal development poses potential threats for coastal seabirds, and understanding their habitat use is a key factor to guide conservation and management. In sub-arctic areas, black guillemots (Cepphus grylle) use coastal habitats year-round, which makes them vulnerable to the increasing human activities in these areas. In mainland Norway, one of the species’ strongholds, black guillemots are red-listed after substantial population declines. However, their fine-scale foraging behaviour has received little attention to date. We collected and analysed GPS tracking data from adult black guillemots at three sites located over a latitudinal gradient of 250 km in central/northern Norway. Maximum foraging ranges of 33 km at Sklinna (65°12′N) for incubating birds, and 18 km at both Vega (65°34′N) and Sklinna for chick-rearing birds, are among the longest reported for this species. At all three sites, foraging probability was highest in shallow waters (< 50 m depth) close to the colony and declined with increasing water depth and distance from colony. However, birds from Vega also foraged over deeper waters. Kelp presence was of high importance at Sklinna, but apparently less important at Røst (67°26’N) and Vega. We also found distinct differences in foraging activity across the day and with tidal height among the sites. Inter-site differences in habitat use and foraging activity may be explained by differences in the availability of habitats and suitable prey. Our study highlights the importance of shallow marine areas for black guillemots and shows that habitat use can vary substantially between sites.