bluuebunny/crossref_metadata_2025_split huggingface dataset:
Diesel exhaust particles induce human umbilical vein endothelial cells apoptosis by accumulation of autophagosomes and caspase-8 activation
Authors: Kim Geun-Young , Jung Inkyo , Park Minhan , Park Kihong , Lee Seung Hee , Kim Won-Ho 
Published: October 2022

AbstractDiesel exhaust particles (DEP) are risk factors for endothelial cells (ECs) dysfunction. However, the mechanism by which DEP induce ECs apoptosis remains unclear. Here, we investigated how DEP induce death of human umbilical vein ECs (HUVECs), with a focus on the autophagy-mediated apoptotic pathway. DEP induced dose-dependent HUVECs death and exposure to the IC50 concentration of DEP (70 µg/ml) led to apoptosis. DEP phosphorylated Beclin-1 (Ser93) and increased protein levels of p62 and LC3BII and the number of LC3B puncta, indicating autophagy initiation. DEP increased expression of pro- and mature forms of cathepsin D, which increases lysosomal activity. However, DEP suppressed expression of the soluble N-ethylmaleimide-sensitive factor attachment protein receptor proteins (STX17, VAMP8, SNAP29, YKT6, and STX7) to inhibit autolysosome formation, resulting in accumulation of autophagosomes. LC3B, p62, and caspase-8 form a tertiary complex in accumulated autophagosomes, which is known to serve as a platform for caspase-8 activation. Indeed, DEP activates caspase-8 and pretreatment with a caspase-8 inhibitor suppressed DEP-induced apoptosis. Furthermore, depletion of p62 decreased caspase-8 and caspase-3 activation and inhibited the DEP-induced apoptosis. Taken together, these findings demonstrated that DEP induced HUVECs apoptosis by inhibiting autophagosome maturation and identified caspase-8 as a novel mediator of DEP-induced ECs apoptosis.
Latitudinal and temporal variation in injury and its impacts in the invasive Asian shore crab Hemigrapsus sanguineus
Authors: Griffen Blaine D. , Alder Jill , Anderson Lars , Asay Emily Gail , Blakeslee April , Bolander Mikayla , Cabrera Doreen , Carver Jade , Crane Laura C. , DiNuzzo Eleanor R. , Fletcher Laura S. , Luckett Johanna , Meidell Morgan , Pinkston Emily , Reese Tanner C. , Repetto Michele F. , Smith Nanette , Stancil Carter , Tepolt Carolyn K. , Toscano Benjamin J. , Vernier Ashley 
Published: October 2022

AbstractNonlethal injury is a pervasive stress on individual animals that can affect large portions of a population at any given time. Yet most studies examine snapshots of injury at a single place and time, making the implicit assumption that the impacts of nonlethal injury are constant. We sampled Asian shore crabs Hemigrapsus sanguineus throughout their invasive North American range and from the spring through fall of 2020. We then documented the prevalence of limb loss over this space and time. We further examined the impacts of limb loss and limb regeneration on food consumption, growth, reproduction, and energy storage. We show that injury differed substantially across sites and was most common towards the southern part of their invaded range on the East Coast of North America. Injury also varied idiosyncratically across sites and through time. It also had strong impacts on individuals via reduced growth and reproduction, despite increased food consumption in injured crabs. Given the high prevalence of nonlethal injury in this species, these negative impacts of injury on individual animals likely scale up to influence population level processes (e.g., population growth), and may be one factor acting against the widespread success of this invader.
An error gradient and accumulation‐type event‐driven model predictive control with relative thresholds for perturbed nonlinear systems
Authors: He Ning , Xu Zhongxian , Shen Chao 
Published: October 2022

AbstractThis work investigates the event‐driven model predictive control problem for perturbed nonlinear systems with input and state constraints. Firstly, a new event‐driven triggering condition, considering the gradient and accumulation of the error between the optimal and actual states at adjacent moments with a state‐dependent relative threshold is designed with a guaranteed positive inter‐event time to avoid Zeno behaviour. Secondly, an error gradient and accumulation type event‐driven model predictive control framework is designed based on the new triggering condition and the dual‐mode strategy, for effectively reducing the calculation and communication burden of the model predictive control controller while ensuring desired control performance. Furthermore, the feasibility and the input‐to‐state practical stability (ISpS) of gradient and accumulation‐type event‐driven model predictive control are rigorously guaranteed theoretically. At last, the simulation results are provided to validate the this algorithm.
Velocity‐layer Zhang equivalency for time‐varying joint limits avoidance of redundant robot manipulator
Authors: Tang Zanyu , Tan Ning , Zhang Yunong 
Published: October 2022

AbstractIn the engineering field, a complex system or problem can be transformed into a relatively simple system or problem through equivalency. In this paper, the repetitive motion planning scheme of redundant robot manipulators with time‐varying physical limits are to be optimized via Zhang equivalency (ZE) approach, which includes Zhang equality equivalency (ZEE) approach and Zhang inequality equivalency (ZIE) approach. The ZE approach is presented, theoretically proved, and applied to optimize the control scheme of redundant robot manipulators at the velocity layer. After that, an enhanced repetitive motion planning scheme via ZE (ERMPS‐ZE) on the basis of quadratic programming is finally built up, which is subject to a ZEE constraint and a time‐varying unified ZIE constraint for the solution of RMP in redundant robot manipulator systems. The simulation results on UR10 robot manipulator substantiate superiorities of the proposed scheme with regard to practicality, validity, and completeness over the traditional scheme. In addition, the results of simulation experiments under different limit situations show the adjusting manners and characteristics of the redundant robot manipulator adopting ERMPS‐ZE when the manipulator encounters physical limits, which validate the correctness and efficacy of the ERMPS‐ZE. Finally, the physical experiment also substantiates the practicability of the ERMPS‐ZE.
Circular saw flatness on machine measurement using a point laser displacement sensor
Authors: Wang Qing , Jing Guochao 
Published: October 2022

AbstractThe flatness error is one of the critical parameters of a circular saw, which seriously affects the cutting performance. In this paper, the measurement of the circular saw flatness error based on a laser displacement sensor is proposed. For the tooth of a circular saw, the plane is discontinuous. According to the field detection demand of a circular saw, the authors collected Archimedean spiral three coordinate data of the circular saw using a laser displacement sensor. Considering the practical application of circular saw flatness detection, the authors have established an ideal plane model of the flatness based on the least‐squares method to evaluate the flatness error of circular saws. The system has a maximum detection area of 400 mm × 400 mm, the measurement time is 80 s, and the measurement absolution accuracy is 10 μm.
Line‐transient enhancement techniques for multi‐path hybrid DC–DC converter with <1% output overshoot/undershoot
Authors: Li Huihua , Ma Qiaobo , Jiang Yang , Law Man‐Kay , Mak Pui‐In , Martins Rui P. 
Published: October 2022

AbstractThis letter presents two transient enhancement techniques for multi‐path switched‐capacitor‐inductor (MP‐SCI) hybrid DC–DC converters to eliminate the line‐transient‐induced voltage coupling to the converter output. Since the existing input‐feedforward method is hard to apply to the MP‐SCI converter, the proposed techniques tackle the intrinsic hard‐charging property with the MP‐SCI topology, preventing the line‐coupling current through topology operation reconfiguration and power‐switch modulation. The proposed controller also achieves adaptive line‐transition detection and automatic flying‐capacitor voltage balancing, ensuring a fast line regulation feature. Implemented with an MP‐SCI topology for a 9 to 14 V‐input to 5 V‐output conversion, the proposed control techniques provide an output (VOUT) overshoot and undershoot as low as 0.5% of the output DC level under a 3‐V input voltage step. From the simulation, the corresponding output variation reduction can be more than 94% when compared with the existing MP‐SCI operations. Besides, the proposed controller is compatible with a voltage‐mode (VM) V2 pulse‐width modulation (PWM) function, achieving a fast load‐transient recovery in six switching cycles and a VOUT variation of 75 mV at a 5 V DC level under a 0‐to‐3 A load step. The peak conversion efficiency can be as high as 95.5%, and the targeted load current delivery is up to 3 A.
Area inertia estimation of power system containing wind power considering dispersion of frequency response based on measured area frequency
Authors: Li Dongdong , Dong Nan , Yao Yin , Xu Bo , Gao David Wenzhong 
Published: October 2022

AbstractWith the rapid increase of the penetration rate of renewable energy sources in power system, the decrease of system inertia will threaten the frequency stability, and the dispersion of frequency response cannot be ignored. This paper proposes a method to estimate area inertia of power system containing wind power considering dispersion of frequency response. Firstly, the impact of inertia distribution between areas on the frequency stability and the inter‐area oscillation are analysed. Secondly, the system is divided based on the spectral clustering algorithm and the frequency similarity index is defined according to the Pearson correlation coefficient to determine the measurement locations for area frequency. Thirdly, the measured tie‐line power and frequency deviation are used to estimate the area inertia based on the numerical integration method. Finally, the case study is conducted based on the modified IEEE 39‐bus system. The simulation results revealed that the proposed method is accurate and reliable in different scenarios.
Antenna array calibration methods based on simultaneous perturbation
Authors: Xing Huijuan , Zhang Yongwei , Fu Yanwei , Lv Xianyang , Xu Zhihuo , Shi Jiajia , Shi Quan , Temiz Murat , El‐Makadema Ahmed 
Published: October 2022

AbstractAntenna arrays have gained significant interest in millimetre‐wave communication systems as an enabling technology to achieve higher capacity and mitigate the high propagation loss. Such arrays with a large bandwidth need to be efficiently calibrated to maximise their performance. An antenna array calibration method based on a stochastic approximation algorithm and simultaneous perturbation has been developed and the procedures to implement it in both frequency and time domains have been presented. The approaches to define objective functions and establish gradient approximations to fulfill a successful convergence for acquiring calibration coefficients in both domains have been explored. In the time domain implementation, only a fraction of the measurement time was required to calibrate an antenna array of ultrawide bandwidth compared with other methods using a perturbation technique. The effectiveness of the proposed method has been validated via numerical experiments in both domains.
Day‐ahead optimal scheduling of building energy microgrids based on time‐varying virtual energy storage
Authors: Mu Yunfei , Zhang Yaqing , Jia Hongjie , Yu Xiaodan , Zhang Jiarui , Jin Xiaolong , Deng Youjun 
Published: October 2022

AbstractThe thermal inertia of a building envelope endows a building with a heat storage capability, introducing scheduling flexibility to a building energy microgrid (BEM). The flexibility is usually modelled as virtual energy storage (VES) and used to optimize the operation of BEMs to reduce electricity costs. However, the VES capacity is impacted by and varies with variations in indoor/outdoor temperature. If only the building envelope's effect on heat transfer is considered, without proper quantification of scheduling flexibility provided by the building envelope, the scheduling scheme (especially VES charging/discharging schemes) will deviate from the actual VES operating conditions, which may affect the thermal comfort of individuals in buildings or bring high electricity costs. In this paper, a time‐varying building VES model (TVES) with three time‐varying parameters (virtual electric capacity (VEC), state of charge (SOC), and charge and discharge power) is proposed to quantify the electricity storage capability of the VES at different time periods for participating in operation of the BEM. Based on the TVES, a day‐ahead optimal scheduling strategy is developed for the BEM to simultaneously reduce the electricity cost and guarantee the user's thermal comfort, where the proposed time‐varying parameters of TVES are taken as constraints in the optimization. Numerical studies verify the effectiveness of the proposed TVES and optimal scheduling strategy.
Coordinated allocation of soft open point and converter‐based energy storage systems in PV penetrated active distribution networks
Authors: Zhou Niancheng , Tao Anqi , Wang Jian , Wang Qianggang 
Published: October 2022

ABSTRACTSoft open point‐based energy storage (SOP‐based ES) can realize the real‐time adjustment of transmission power in space and peak load shaving in time, further promoting the integration of distributed generations (DGs) and decreasing the allocation cost. This article proposed an optimal planning model for coordinated allocation of SOP‐based ES and conventional independent ES systems in PV penetrated Active Distribution Networks (ADN). First, the planning models of SOP‐based ES, battery of ES systems and its lifetime are established. Second, the proposed coordinated allocation model aims to minimize the total planning cost, including power exchange cost, investment cost, operation cost, battery degradation cost and loss cost. In order to solve the uncertainty of PV output and load demand, the stochastic optimization model is established with scenarios reduced by the K‐means clustering technique. Third, the linearization model of the battery degradation cost is derived to transform the optimization model into a mixed integer linear programming (MILP) model. Finally, the presented model is implemented on an IEEE 33‐node distribution system to confirm its effectiveness. The case study results show that the coordinated allocation of SOP and converter‐based ES can effectively reduce the allocation cost of ES and promote the integration of DGs.
Quasi-stellar objects and galaxy mass density profiles derived using the submillimetre galaxies magnification bias
Authors: Crespo D. , González-Nuevo J. , Bonavera L. , Cueli M. M. , Casas J. M. , Goitia E. 
Published: October 2022

Context. The magnification bias on the submillimetre galaxies (SMGs) is a gravitational lensing effect, where the SMGs are used as background lensed galaxies. This effect can be used to investigate the mass density profiles of different types of foreground lenses.
Aims. In this work, we want to exploit the magnification bias of the SMGs using two different foreground samples, quasi-stellar objects (QSOs) and galaxies. Our aim is to study and compare their mass density profiles and estimate their masses and concentrations.
Methods. The background SMG sample consists of objects observed by Herschel with 1.2 < z < 4.0 (mean redshift at ∼2.2). The foreground samples are QSOs with spectroscopic redshifts 0.2 < z < 1.0 (mean redshift at ∼0.7) and massive galaxies with also spectroscopic redshifts 0.2 < z < 1.0 (mean redshift at ∼0.3). The cross-correlation measurements are estimated with the Davis-Peebles estimator by stacking the SMG–QSO and SMG–galaxy pairs for the two analysed cases, respectively. The advantage of such an approach is that it allows us to study the mass density profile over a wide range of angular scales, from ∼2 to ∼250 arcsec, including the inner part of the dark-matter halo (≲100 kpc). Moreover, the analysis is carried out by combining two of the most common theoretical mass density profiles in order to fit the cross-correlation measurements.
Results. The measurements are correctly fitted after splitting the available angular scales into an inner and an outer part using two independent mass density profiles, one for each region. In particular, for the QSOs, we obtain masses of log10(M/M⊙) = 13.51 ± 0.04 and of log10(M/M⊙) = 13.44 ± 0.17 for the inner and outer parts, respectively. The estimated masses for the galaxy sample are log10(M/M⊙) = 13.32 ± 0.08 and log10(M/M⊙) = 12.78 ± 0.21 for the inner and outer parts, respectively. The concentrations for the inner part are much higher than those for the outer region for both samples: C = 6.85 ± 0.34 (inner) and C = 0.36 ± 0.18 (outer) for the QSOs and C = 8.23 ± 0.77 (inner) and C = 1.21 ± 1.01 (outer) for the galaxies.
Conclusions. In both samples, the inner part has an excess in the mass density profile with respect to the outer part for both QSOs and galaxy samples. We obtain similar values for the central mass with both samples, and they are also in agreement with those of galaxy clusters results. However, the estimated masses for the outer region and the concentrations of the inner region both vary with lens sample. We believe this to be related to the probability of galactic interactions and/or the different evolutionary stages.
Ventricular Catheter Insertion on the Occipital and Parietooccipital Bone: A Nonmetric Complementary Technique
Authors: Elarjani Turki , Alamer Othman Bin , Alhammad Othman 
Published: October 2022

Abstract
Background and Study Aim Hydrocephalus is a common disease of the pediatric population, with cerebrospinal fluid diversion as the management of choice. All current insertion techniques require craniometrics calculation that may not be applicable for pediatric patients, due to significant variation in head circumference. We describe a complementary method of inserting ventricular catheters, devoid of craniometrics.
Materials and Methods The insertion site is based on two imaginary lines on the sagittal plane (superior and inferior limits) and four imaginary lines on the axial plane of a computed tomography/magnetic resonance imaging. The insertion point is chosen based on the shortest location from the outer table of the bone to the ventricle. The length of catheter insertion is calculated based on the distance between the calvarial outer table and the foramen of Monro.
Results Two case examples of ventricular catheter insertions, in pediatric patients with noncommunicating hydrocephalus, are described. External ventricular drain and ventriculoperitoneal shunt were inserted using this technique, with no required craniometrics measurements.
Conclusion This complementary method of inserting ventricular catheters can be easily tailored and implemented by junior neurosurgical residents to senior neurosurgeons as it precludes the measurement of the catheter insertion points.
Blogging for intercultural communicative competence in study abroad programs
Authors: Dressler Roswita , Crossman Katherine , Kawalilak Colleen 
Published: October 2022

AbstractParticipants in study abroad (SA) programs (sojourners) are often encouraged to blog as a form of reflective writing, yet little is known about this practice. Generally, reflection facilitates sojourners’ engagement in their personal and professional growth. Drawing from two different but complementary frameworks, we analyzed blogs from 51 sojourners in short-term SA volunteer teaching placements to examine the reflection that occurred through their writing. The two frameworks revealed different aspects of blogging practices: types of reflection (Maarof, 2007) were primarily descriptive, but intercultural communicative competence learning (Elola & Oskoz, 2008) examples were more numerous and varied, documenting sojourners’ navigation of culture in SA. Sojourners did not typically use their blogs for dialogic or critical reflection, instead chronicling experiences or representing reflection as completed actions. Although blogging can be useful for reflection in SA, the results from this study suggest that careful scaffolding may be necessary to encourage critical reflection.
Ultralight Nafion/Ag composite microfiber film actuator driven by low voltage
Authors: Li Xueying , Yang Jialong , Zou Kangkang , Feng Jiabao , Pu Wei , Wang Haolun 
Published: October 2022

Abstract
Electrothermal actuators (ETAs) have received great attention among soft actuators due to their simple structure and light weight. Since most of the application scenarios of ETAs are on soft robots, the current research on ETAs mainly focuses on the improvement of their max deformation. In fact, important application prospects of soft actuators lie in biological and medical aspects, such as smart wearable devices. This remind us to consider the issues of safety and comfort, which have been neglected for a long time. In this work, we report an ultralight, porous Nafion/Ag composite microfiber film actuator prepared by blow-spinning. Unlike most ETAs, it has porous fibrous structure and can achieve considerable deformation in a safe temperature range for the organisms (30 °C–67 °C). The film actuator, with a low density (about 0.45 g cm−3), can bend in a short time (within 15 s) to an angle of about 91° and achieve a displacement of 11.2 mm when applied a low voltage (2.4 V). Owing to the processing method of blow-spinning, the film actuator presents a series of excellent characteristics, including softness, light weight and porosity, etc. To summarize, the Nafion/Ag composite microfiber film actuator shows great potential in soft robots and smart wearable devices due to their properties of low driven voltage, low weight and moderate working temperature range.
Status of the upgrade project of the CMS Tracker for HL-LHC
Authors: Migliore E. 
Published: October 2022

Abstract
The CMS collaboration is currently preparing the upgrade of the tracking system for the High-Luminosity LHC operations (HL-LHC). The HL-LHC is scheduled to start in 2027 and it will bring the instantaneous luminosity up to 7.5 × 1034 cm−2 s−1, with an average of 200 interactions per beam crossing, and an integrated luminosity up to 4000 fb−1 over a decade. To operate efficiently in these challenging conditions, the new detector has to provide tracking information to the first level trigger stage and maintain good and efficient offline tracking. In this contribution, the layout of the new detector, the main technology choices together with highlights on the current status of the main detector components will be presented.