bluuebunny/crossref_metadata_2025 huggingface dataset:
Pulmonary artery blood flow dynamics in chronic thromboembolic pulmonary hypertension
Authors: Tsubata Hideo , Nakanishi Naohiko , Itatani Keiichi , Takigami Masao , Matsubara Yuki , Ogo Takeshi , Fukuda Tetsuya , Matsuda Hitoshi , Matoba Satoaki
Published: April 2023

Chronic thromboembolic pulmonary hypertension is caused by incomplete resolution and organization of thrombi. Blood flow dynamics are involved in thrombus formation; however, only a few studies have reported on pulmonary artery blood flow dynamics in patients with chronic thromboembolic pulmonary hypertension. Furthermore, the effects of treatment interventions on pulmonary artery blood flow dynamics are not fully understood. The aim of the study was to evaluate pulmonary artery blood flow dynamics in patients with chronic thromboembolic pulmonary hypertension before and after pulmonary endarterectomy and balloon pulmonary angioplasty, using computational fluid dynamics. We analyzed patient-specific pulmonary artery models of 10 patients with chronic thromboembolic pulmonary hypertension and three controls using computational fluid dynamics. In patients with chronic thromboembolic pulmonary hypertension, flow velocity and wall shear stress in the pulmonary arteries were significantly decreased, and the oscillatory shear index and blood stagnation volume were significantly increased than in controls. Pulmonary endarterectomy induced redistribution of pulmonary blood flow and improved blood flow dynamics in the pulmonary artery. Balloon pulmonary angioplasty improved pulmonary blood flow disturbance, decreased blood flow stagnation, and increased wall shear stress, leading to vasodilatation of the distal portion of the pulmonary artery following balloon pulmonary angioplasty treatment.
Estimating historical exposure to perfluoroalkyl acids in Security, Fountain, and Widefield Colorado: use of water-infrastructure blending and toxicokinetic models
Authors: Meeks Jessica , Mass Sarah , Adgate John L. , Barton Kelsey , Singha Kamini , McCray John E. , Starling Anne P. , Higgins Christopher P.
Published: April 2023

Drinking water can be a major source of poly- and perfluoroalkyl substance (PFAS) exposure for humans.
Single-atom nanozymes as promising catalysts for biosensing and biomedical applications
Authors: Xiao XueQian , Hu Xiao , Liu Qiming , Zhang Yuling , Zhang Guo-Jun , Chen Shaowei
Published: April 2023

Single-atom nanozymes represent a unique class of enzyme mimics that exhibit maximal atomic utilization, a well-defined electronic/geometric structure, and high catalytic activity, and have found diverse applications in biomedicine and biosensing.
Outcomes and Patient Experience in Individuals With Longstanding Dizziness
Authors: Shah Manami , Staab Jeffrey , Anderson Ann , Eggers Scott D. , Lohse Christine , McCaslin Devin L.
Published: April 2023

Purpose:

This study aimed to describe the relationship between changes in pre and post self-perceived dizziness handicap, scores on the patient health questionnaire, and perceptions of patient's value of being evaluated and managed by a multidisciplinary team.

Method:

Seventy-eight patients completed the Dizziness Handicap Inventory (DHI) and Patient Health Questionnaire–Fourth Edition (PHQ-4) questionnaires post multidisciplinary clinical consultations and testing for the chief complaints of dizziness, unsteadiness, vertigo, or balance problems. The diagnoses of each patient were recorded from the clinical reports of each specialty consultation and were classified as structural, functional, or psychiatric. They were contacted by phone at least 6 months after their visit to obtain feedback regarding their symptoms and overall patient experience.

Results:

The change in DHI total score did not differ significantly by diagnosis (
p
= .56), indicating that patients experienced an improvement in DHI total score regardless of diagnosis. PHQ-4 anxiety scores worsened by a mean of 0.7 points for those with structural diagnoses (
p
= .04), improved by a mean of 0.7 points for psychiatric diagnoses (
p
= .16), and improved by a mean of 0.3 points for functional diagnoses (
p
= .39). Only seven patients would not recommend the team to a family or friend; these patients tended to report worsening DHI total scores (
p
= .27) compared to the significant improvement in DHI total scores for patients who would make such a recommendation (
p
< .001). Similarly, only 13 patients did not feel the information they received had a positive impact; these patients tended to report worsening DHI total scores (
p
= .18) compared to the significant improvement in DHI total scores for patients who did feel the information had a positive impact (
p
< .001).

Discussion:

The assessment and management of patients with chronic dizziness is challenging due to symptoms arising from multiple etiologies. Our finding of a vast difference between high satisfaction and relatively unchanged dizziness handicap suggests that there is value in seeing a multidisciplinary team where consultations are unhurried, care is coordinated, and expectations regarding treatment can be managed.
A Vocal Hygiene Program for Mitigating the Effects of Occupational Vocal Demand in Primary School Teachers
Authors: Lin Kelly Jie Ying , Chan Roger W. , Wu Chia-Hsin , Liu Sally Chien Hsin
Published: April 2023

Purpose:

Teachers are occupational voice users with significant vocal demand. This study examined if a vocal hygiene program could mitigate the effects of occupational vocal demand in primary school teachers across 1 month.

Method:

Sixty female teachers participated, with 30 in an experimental group receiving vocal hygiene education plus daily home practice for 1 month and 30 in a control group with no intervention. Their vocal changes across the month were quantified with (a) acoustic measures on fundamental frequency (
f
o
), vocal intensity, jitter and shimmer, harmonics-to-noise ratio, and smoothed cepstral peak prominence and (b) Voice Handicap Index (VHI-10) and Vocal Fatigue Index (VFI) scores.

Results:

Analysis of covariance showed significantly larger changes (significant decreases) in conversational
f
o
and in jitter for the experimental group relative to the control group. Post hoc pairwise comparisons following repeated-measures analysis of variance showed significant decreases in conversational
f
o
and in jitter across the month for the experimental group. No significant differences in VHI-10 and VFI scores were found between the groups.

Conclusions:

Vocal demand–related changes in acoustic measures could be partially mitigated with the vocal hygiene program. Future studies with a more refined intervention program and more long-term follow-up are recommended to better understand the long-term benefits of vocal hygiene programs on primary school teachers.
Evaluation of a time-gated-single-pixel-camera as a promising sensor for autonomous vehicles in harsh weather conditions
Authors: Bett Claudia Monika , Daiber-Huppert Max , Frenner Karsten , Osten Wolfgang
Published: April 2023

We propose a time-gated-single-pixel-camera as a promising sensor for image-free object detection for automotive application in adverse weather conditions. By combining the well-known principles of time-gating and single-pixel detection with neural networks, we aim to ultimately detect objects within the scene rapidly and robustly with a low-cost sensor. Here, we evaluate the possible data reduction such a system can provide compared to a conventional time-gated camera.
Branding Kristianstad: a case of rebranding and stakeholder engagement
Authors: Källström Lisa , Siljeklint Per
Published: April 2023

Kristianstad is today in the process of implementing its third place brand in less than 20 years. The purpose of this case study is to describe Kristianstad’s place branding journey with a special focus on the place stakeholders and their involvement and engagement—a case of both rebranding and participatory place branding. The case study describes Kristianstad’s three distinct branding initiatives, with focus on their initiators, engagement and implementation. It is based on a collaboration with Kristianstad municipality and a descriptive approach was employed. Empirical materials were collected through interviews and active participation in workshops and meetings. The case describes Kristianstad’s place branding journey and illustrates how place stakeholders’ previous involvement and experiences influence their behaviours and perceptions of the current place brand as well as the continuing place branding process. The three main takeaways are: past experiences matter; it matters where the place brand initiative comes from; and engagement matters more than profile. Kristianstad municipality’s place branding journey shows the difficulties with rebranding a place, more specifically highlighting place stakeholders’ engagement over time.
Revisiting tropical pasture intake: what has changed in 50 years?
Authors: Charmley E. , Thomas D. , Bishop-Hurley G. J.
Published: April 2023

The measurement and prediction of pasture intake in extensive grazing systems, typical of northern Australia, remain elusive after 50 years of research. The aim of this paper is to review research conducted over the past 50 years, highlight advances in understanding, discuss remaining challenges and consider future developments with digital technologies. While the fundamental components of voluntary intake are well understood, their measurement is difficult, particularly in extensive grazing systems, which has limited the development of predictive models that adequately address the interplay of factors influencing intake from the bite to the landscape scale. Ongoing research by the authors is used as an example to highlight the potential application of digital technologies to overcome limitations in measurement and prediction. Digital technologies offer the opportunity for monitoring factors that control voluntary pasture intake at scale and under commercial conditions. However, our ability to ground-truth novel indices of intake remains limited without ongoing development of physical methods. This will limit the accuracy and precision of predictive models incorporating digital technologies that can be applied to the extensive grazing conditions of northern Australia. The advent of precision livestock management for extensive cattle production is essential if the industry is to remain viable in the future where production is transparent, ethically sound and environmentally defensible as well as profitable.
What are green prescriptions? A scoping review
Authors: Stanhope Jessica , Weinstein Philip
Published: April 2023

Introduction Clear terminology is critical to allow accurate communication between practitioners, policy makers and the public. Aim We investigated how the term ‘green prescription’ has been used in the peer-reviewed literature. Methods We conducted a scoping review of the peer-reviewed literature that used the term ‘green prescription(s)’ and determined how this term was used. We then investigated how the term has been used over time, in different geographic locations and in different academic disciplines. Results We included 268 articles that used the term ‘green prescription(s)’. We found that the phrase ‘green prescription(s)’ has been used since 1997 to mean a written prescription for a lifestyle change, most commonly physical activity, provided by a health practitioner. However, more recently (since 2014) the term has also been used to mean exposure to nature. Despite the emergence of this new meaning, ‘green prescription’ remains, in the health and medical science literature across all continents, most commonly used to describe a prescription for physical activity. Conclusion The use of the term ‘green prescriptions’ is inconsistent and has led to misuse of the research evidence regarding written prescriptions for exercise/diet being used to justify nature exposure to improve human health. We recommend that the term ‘green prescriptions’ continues to be used only as per its original definition, to refer to written prescriptions for physical activity and/or diet. For prescriptions to spend time in nature, we suggest use of the more appropriate term ‘nature prescriptions’.
A countess as goat and a duke as boar
Authors: Wackers Paul
Published: April 2023

This article studies three medieval texts in which specific historical persons are presented as animals to
comment upon their behaviour and on the situation they were in. The choice of representing animals is studied, as are the literary
techniques and the meaning of the texts. It is argued that this meaning is always general, and older scholarly interpretations,
that are more specific, are rejected. An explanation is suggested for the rarity of this type of ‘animal story as political
commentary’, and it is argued that this type is fundamentally different from the passages in traditional animal stories which have
previously been assumed also to contain veiled political commentary.
Revisiting Andreev processes in superconductor-graphene-superconductor (SGS) Josephson junctions: comparison with experimental results
Authors: Salim Shahrukh , Marathe Rahul , Ghosh Sankalpa
Published: April 2023

In view of the recent progress in experiments on charge transport through various Josephson junctions made out of graphene, we have made a careful comparison between the theory and some of the available experimental results. Within the framework of a transfer matrix approach, we have first analytically derived the spectrum of Andreev bound states (ABS) in a superconductor -graphene-superconductor (SGS) junction for a wide range of experimentally relevant parameters. We have particularly considered the case of monolayer graphene (MLG). The theoretical results can account for both the retro Andreev reflection (RAR) and the specular Andreev reflection (SAR) in the relevant parameter range. Using the ABS spectrum we have evaluated the current through such junctions and the junction conductance from the analytically derived expressions at different bias voltages for a range of other system parameters directly taken from the experimental works. These theoretical results have then been compared with experimental results. Evaluated current and the conductance show scaling behaviour with change in the junction length and agree well with the experimental results. In the relevant parameter regime where the SAR process is dominant, the calculated values of the current and the conductivity have been found much lower than the corresponding values observed when the RAR process is dominant.
Detection of hazardous greenhouse gases and chemicals with topological edge state using periodically arranged cross-sections
Authors: Zaky Zaky A , Mohaseb M A , Aly Arafa H
Published: April 2023

This study investigates a sensitive chemical and hazardous greenhouse gas sensor using ternary phononic crystals composed of periodic tubes. The sensing mechanism depends on the localization of the topological edge state at the interface between phononic crystals. The impact of the structure’s geometry and concentration of a specific gas in air are discussed. Further, the effect of temperature on the position of topological edge state and the sensitivity of the proposed sensor will be studied. This model has shown good sensitivity of 1.58 Hz m−1 s and a figure of merit of 33.7 m−1 s to distinguish different chemical and hazardous greenhouse gas. Furthermore, the proposed detector is low-cost and simple because it does not require a complicated procedure to fabricate multilayers with different mechanical properties.
Deterministic joint remote state preparation via a non-maximally entangled channel
Authors: Xin Xuanxuan , He Shiwen , Li Yongxing , Li Chong
Published: April 2023

Ideal deterministic quantum communication tasks require maximally entangled channels. The reality is that the maximally entangled channel is inevitably degraded to a generally entangled one because of various decoherence mechanisms, seriously deteriorating the performance of quantum communication. In most cases, entanglement purification and distillation are utilized to improve the entanglement and to construct the maximally entangled channel. In this paper, we proposed an alternative scheme to realize deterministic joint remote state preparation using a non-maximally entangled channel. Instead of spending additional entanglement resources in advance for entanglement purification or distillation, only two non-entangled ancillaries are employed in this scheme. Whether the employed quantum channel is a maximally entangled channel or a generally entangled one, remote state preparation would never fail theoretically in this investigation. This protocol provides a feasible way for the construction of practical quantum networks.
Discrimination of geometrically uniform states and the no-signaling principle
Authors: Lü Xin
Published: April 2023

The link between quantum state discrimination and the no-signaling principle is applied to discriminating geometrically uniform states. Specifically, the original discrimination problem is converted to constructing the complementary matrix with predetermined off-diagonal entries. Two such constructions are given explicitly, and therefore three upper bounds on the success probability are derived. Those upper bounds are then employed to estimate the robustness of coherence, where we establish a larger class of states with equal robustness of coherence and l
1-norm of coherence, and provide the exact answer of the robustness of coherence for any states that are diagonalized by Hadamard matrices.
Anomalous non-Hermitian dynamical phenomenon on the quantum circuit
Authors: Dong Chenxiao , Yang Zhesen , Zeng Jinfeng , Hu Jiangping
Published: April 2023

The anomalous non-Hermitian dynamical phenomenon with the non-Hermitian skin effect (NHSE) attracts wide attention due to its novel physics and promising applications. Here, we propose a new type of non-unitary discrete-time quantum walk system demonstrating the NHSE and anomalous non-Hermitian dynamical phenomena, including the dynamical chiral phenomenon, the funneling phenomenon on the domain wall, and the anomalous reflection on the phase impurity. Furthermore, we design the quantum circuit experiments of these quantum walk systems and numerically simulate them with quantum noises to verify the robustness of the non-Hermitian dynamical phenomenon on the noisy intermediate-scale quantum (NISQ) devices. Our work paves the way for implementing the non-Hermitian dynamical phenomenon on the quantum circuit.
Simulation and Analysis of Optimizing the Hydraulic Transition Process of a with Double Surge Tanks
Authors: Li Gaohui , Zhang Shengtai , Yang Shaojia , Zhang Zhida
Published: April 2023

Due to the hydraulic characteristics of the runner, the hydraulic transition process of the pumped-storage hydroelectricity is complicated, and it has a greater impact on the safe operation of the waterway system. Therefore, simulation and analysis of the hydraulic transition process are essential when designing a pumped-storage hydroelectricity. Based on the four-image characteristic curve of the pump-turbine runner of a pumped-storage hydroelectricity with double surge tanks, guide vane closing laws, and the layout of the water delivery system, this paper conducts computer simulation and analysis of the hydraulic transition process of the power delivery system. This paper also presents how the representative parameters (e.g. unit rotation speed and pressure in the water delivery system) of the water delivery system change in various cases. The results show that the various indexes of the hydraulic process of the pumped-storage hydroelectricity meet the control requirements. This paper also provides the optimization to the design of the water delivery system of the pumped-storage hydroelectricity.
A comprehensive evaluation of carbon capture technology in China based on analytic hierarchy process
Authors: Li Nan , He Yonglong , Li Jiqun , Ma Xue , Wu Hongbo , Qin Tingfeng
Published: April 2023

The evaluation system of the technology innovation system is constructed. Taking the carbon capture technology of a 600MW thermal power unit as an example, four first-level indicators and ten second-level indicators are established based on technical performance, economic cost, social value and strategic value. The comprehensive quantitative evaluation is carried out using the combination of the analytic hierarchy process, expert scoring method and questionnaire survey method, which provides strong support for the development of carbon capture technology by relevant management departments.
Energy Optimization Model of Multi Energy Interaction in Thermal Power Plants with Wind Power, Photovoltaic, Hydrogen Production and Hydrogen Fuel Cell System
Authors: Zhao Zhiyu , Wang Zesen , Liu Yinglin , Liang Weichen , Li Jie , He Xuwei , Gao Bo
Published: April 2023

It is proposed that an energy optimization model of multi energy interaction in thermal power plants with wind power, photovoltaic and hydrogen production and hydrogen fuel cell system (HPHFCS). Considering that the wind power, photovoltaic and HPHFCS are connected to the auxiliary power system of thermal power plant, according to the output characteristics of the multiple power sources and auxiliary power load, an energy optimization model of multi energy interaction at the auxiliary power is proposed and analysed. This paper quantitatively analyses the role of wind power, photovoltaic and HPHFCS connected to the auxiliary power system of thermal power plants in promoting the local consumption of renewable energy sources and reducing the power consumption rate of thermal power plants. Numerical cases and simulation results validate the correctness and effectiveness of the energy optimization model in this paper.
Provision of regulation service to power systems by energy storages based on a battery degradation cost model
Authors: Huang Bowen , Wu Xiang , Xiao Guojun , Zeng Zihao , Xie Xueyuan , Chen Hong , Zhu Yan
Published: April 2023

Energy storage station (ESS) has been allowed to provide ancillary services in power markets in recent years. It is a high-quality resource for regulation services and can promote renewable energy consumption. Existing studies have yet to consider the battery degradation cost when using ESS to provide regulation service. This paper establishes a model to quantify the ESS’s degradation cost and proposes a market-clearing model integrated with such a cost to address this issue. The model is verified by case studies. Key factors affecting the revenue and performance of ESS providing regulation services are also analyzed.
Experimental investigation on start-up performance of the sulfur heat pipe
Authors: Qiao Yiwei , Li Yannan , Tao Hanzhong
Published: April 2023

The effects of thermal load 1662W and 3740W respectively, the maximum furnace temperature 450°C and 600°C on the starting characteristics of the sulfur heat pipe is studied by using sulfur as a working fluid. The experimental data show that when the maximum furnace temperature is fixed, increasing the heating power can reduce the starting time; if the heating load is constant, the temperature of the pipe wall increases with the rise of the maximum temperature of the furnace; when the sulfur heat pipe is stable, the thermal resistance reduces with the grow of heating power and the heat transfer performance is also greatly improved; the heating power is 3740W and the maximum furnace temperature is 600 °C, which is the best condition for starting the heat pipe.
Research on Power Distribution Control of Parallel Inverters in Off-grid Mode
Authors: Cui Tongfei , Wang Leibao , Yu Tengkai , Rong Shiyang , Liu Zhao
Published: April 2023

The power distribution of inverters in parallel operation is uneven due to the difference in line impedance. In this paper, the parallel operation of two inverters is taken as an example, the power distribution mechanism is derived and the relevant mathematical model is established, and the influencing factors of the parallel inverter power distribution are analyzed. Then, the virtual impedance is introduced based on the voltage and current double closed-loop of the photovoltaic inverter, and an improved strategy based on the virtual impedance is proposed. Finally, PLECS simulation proves the effectiveness of the proposed method.
Research on the Two-dimensional Electric Field on the Conductor Surface of 750 kV Transformer Substation under Different Structures
Authors: Zhang Xiaowen , Sun Zhiyuan
Published: April 2023

During the process of the design of the 750 kV transformer substation, the intensity of the electric field on the conductor surface is something very important. In this study, adopting a software of Finite Element Simulation, the authors respectively established simulation models of the distribution of two-dimensional electric field, calculated the maximum values of electric field intensity in different scenarios, and researched the distribution rules of electric field intensity on conductor surface in different wires, different division quantities, and different separation distances. As a result, the authors figured out the composition of wires which are applicable to the 750 kV transformer substation.
Battery-Swapping Station Site Selection and Distribution in Material Vehicles Scheduling Based on NSGA-II
Authors: Jiang Bingzheng , Wang Jiayuan
Published: April 2023

The location planning of battery-swapping stations needs to consider many factors. This paper is based on the location planning of battery-swapping stations and considers limits on the number of electric material vehicles and battery packs. Firstly, a rapid vehicle exchange model for battery-swapping stations is established. On this basis, a steady-state model of the vehicle transporting materials is established, which describes the regular and dynamic operation of the whole vehicle dispatching system based on maximizing the number of vehicles always transporting materials on the road. Finally, a material transportation target planning model is established. NSGA-II is used to solve the maximum material transportation target planning function for the best selection of battery-swapping station sites and the best number of vehicles and battery packs for material transportation.
Study on failure pattern evaluation method of transmission tower under wind load
Authors: Huang Zenghao , Liao Yongli , Wu Huifeng , Wu Lilin , Zhang Xin
Published: April 2023

To investigate the association between the failure pattern and the proportion of external load in the tower segment, the capacity experiment of the scaled segment model is designed in this paper, and the FE model of the experiment of the segment is build and compared with experiment results. The pattern of the tower segment failed is evaluated by the relationship of PH(horizontal load) and MP (bending moment). The critical points of P-MP curve were analyzed by selecting the capacity of diagonal and main elements. And the failure assessment theory for the tower segment was established. The results indicate that the FE model of the experiment segment can reflect the experiment loading process effectively. The capacity of the diagonal element has a significant impact on the tower’s PH, and the main element’s bearing capacity is an important factor affecting the flexural capacity. Using the proposed method, the weak positions and elements of the structure can be judged.
Design and Implementation of an Automatic Test and Verification System for SoC
Authors: wang Lijun , Liu Xiaolu
Published: April 2023

With the development of semiconductor technology in recent years, the design of SoC has become more and more complex. [1]In order to ensure the correctness of chip design and the success rate of chip taping out, the verification test of SoC becomes more and more important. This paper designs an automated test and verification system based on STM32 and analog switch matrix chips. The system has high reusability, good scalability, convenient maintenance and automated test, and can improve the efficiency of test and verification, reduce the cost and shorten the development cycle of SoC.
User-side distributed power storage sharing strategy
Authors: Cui Gaoyang , Wang Zhijie
Published: April 2023

Distributed power storage can store and optimize excess power from renewable power sources and reduce the cost of electricity for customers by shifting peaks and filling valleys. However, the expensive price and low utilization of distributed power storage hindered its development on the user side. The time-sharing multiplexing model allow users share distributed power storage’s spare capacity. To improve the utilization of distributed power storage and increase its economic benefits, we propose a user-side distributed power storage sharing strategy. First, we establish a two-level sharing model with community platform as the upper layer and users as the lower layer, then, use the alternating direction multiplier method (ADMM) to solve this optimization model to complete the capacity allocation.
Multi-objective reactive power co-optimization based on the MOPSO algorithm considering wind power integration
Authors: Yue Chen , XianYu Jianchuan
Published: April 2023

With the proposal of the “double carbon” policy, the installed capacity of new energy wind power is further expanded. Focusing on the uncertainty of a high proportion of wind power output, wind power integration will aggravate power quality problems such as active network losses; however, it is effective in improving system network losses that optimize reactive power. Therefore, this study adopts a multi-objective reactive power optimization method, which regards minimum network losses and node voltage deviation as objective function. Unlike the traditional sensitivity analysis method, the reactive power margin method selects the nodes to be compensated, this study adopts multi-objective particle swarm optimization (MOPSO) to resolve the practical problem in the IEEE33 node system. The results show that the nodes selected can play a better role in reactive power compensation aspect. The network losses and voltage deviation of the wind power distribution system can be significantly reduced by comparing the algorithm pre and post of optimization.
Analysis Method of Primary Frequency Modulation Capability of Power System Based on GRNN
Authors: Li Haichen
Published: April 2023

One of the most important key parameters in power network operation is power frequency. The power network will be affected by various disturbances in operation, and the frequency of the power network will show different fluctuations under different disturbances. Once the frequency of the power network deviates from the normal operation level, the power quality of the power network will decrease, and the power equipment will be in an abnormal operation state. With the development of power network, the scale of distributed microgrid with high uncertainty such as new energy is expanding increasingly, the proportion of UHVDC transmission lines is increasing, and the structure of power network is changing, which makes the regulation of power network frequency facing greater challenges. In this paper, relying on the mechanism of integrated load of power network and the participation of generator set in primary frequency modulation, the primary frequency modulation capability of 60 s power network under different frequency disturbance conditions is analysed, and the training and simulation prediction of GRNN generalized regression neural network prediction model are completed by using MATLAB software. By predicting of the generator set under different disturbances, the parameters related to the primary frequency modulation capability of the power network, such as the maximum amplitude of the active power fluctuation, the time when the maximum amplitude occurs and the time when the power network is restored to stability, are obtained to provide more accurate dispatching support for the dispatching side.
Second generation Monitoring of Pixel System (MOPS) chip for
the Detector Control System (DCS) of the ATLAS ITk Pixel detector
Authors: Ahmad R. , Adam A. , Besproswanny J. , Karagounis M. , Kind P. , Kersten S. , Qamesh A. , Walsemann A. , Zeitnitz C.
Published: April 2023

The MOPSv2 chip is an Application Specific Integrated Circuit (ASIC) to provide the
temperature and the voltage monitoring data of individual front-end detector modules to the DCS of
the ATLAS ITk Pixel detector. The chip implements CANopen in a hardwired logic, provides the
possibility of remote reset without a power cycle and automated on-chip frequency trimming using
CAN messages. The chip has proven to be radiation hard during testing up to an ionizing dose of
500 Mrad, immune to Single Event Upsets (SEUs) and works reliably under irradiation at
high operating temperatures of up to 40 °C. In this paper, the functionality and
performance of the second version of the chip will be discussed, and also results from the
irradiation campaigns will be presented.
Multi-scale planning model for robust urban drought response
Authors: Zaniolo Marta , Fletcher Sarah , Mauter Meagan S
Published: April 2023

Increasingly severe droughts are straining municipal water resources and jeopardizing urban water security, but uncertainty in their duration, frequency, and intensity challenges drought planning and response. We develop the Drought Resilient Interscale Portfolio Planning model (DRIPP) to generate optimal planning responses to urban drought. DRIPP is a generalizable multi-scale framework for optimizing dynamic planning strategies of long-term infrastructure deployment and short-term drought response. It integrates climate and hydrological variability with high-fidelity representations of urban water distribution, available technology options, and demand reduction measures to yield robust and cost-effective water supply portfolios that are location-specific. We apply DRIPP in Santa Barbara, California to assess how least cost water supply portfolios vary under different drought scenarios and identify portfolios that are robust across drought scenarios. In Santa Barbara, we find that drought intensity, not duration or frequency, drives cost increases, reliability risk, and regret of overbuilding infrastructure. Under uncertain drought conditions, a diversified technology portfolio that includes both rapidly deployable, decentralized technologies alongside larger centralized technologies minimizes water supply cost while maintaining high robustness to climate uncertainty.
Using structure to model function: incorporating canopy structure improves estimates of ecosystem carbon flux in arctic dry heath tundra
Authors: Min Elizabeth , Naeem Shahid , Gough Laura , McLaren Jennie R , Rowe Rebecca J , Rastetter Edward , Boelman Natalie , Griffin Kevin L
Published: April 2023

Most tundra carbon flux modeling relies on leaf area index (LAI), generally estimated from measurements of canopy greenness using the normalized difference vegetation index (NDVI), to estimate the direction and magnitude of fluxes. However, due to the relative sparseness and low stature of tundra canopies, such models do not explicitly consider the influence of variation in tundra canopy structure on carbon flux estimates. Structure from motion (SFM), a photogrammetric method for deriving three-dimensional (3D) structure from digital imagery, is a non-destructive method for estimating both fine-scale canopy structure and LAI. To understand how variation in 3D canopy structure affects ecosystem carbon fluxes in Arctic tundra, we adapted an existing NDVI-based tundra carbon flux model to include variation in SFM-derived canopy structure and its interaction with incoming sunlight to cast shadows on canopies. Our study system consisted of replicate plots of dry heath tundra that had been subjected to three herbivore exclosure treatments (an exclosure-free control [CT], large mammals exclosure), and a large and small mammal exclosure [ExLS]), providing the range of 3D canopy structures employed in our study. We found that foliage within the more structurally complex surface of CT canopies received significantly less light over the course of the day than canopies within both exclosure treatments. This was especially during morning and evening hours, and was reflected in modeled rates of net ecosystem exchange (NEE) and gross primary productivity (GPP). We found that in the ExLS treatment, SFM-derived estimates of GPP were significantly lower and NEE significantly higher than those based on LAI alone. Our results demonstrate that the structure of even simple tundra vegetation canopies can have significant impacts on tundra carbon fluxes and thus need to be accounted for.
Periodic orbit theory of Bethe-integrable quantum systems: an N-particle Berry–Tabor trace formula
Authors: Urbina Juan Diego , Kelly Michael , Richter Klaus
Published: April 2023

One of the fundamental results of semiclassical theory is the existence of trace formulae showing how spectra of quantum mechanical systems emerge from massive interference among amplitudes related with time-periodic structures of the corresponding classical limit. If it displays the properties of Hamiltonian integrability, this connection is given by the celebrated Berry–Tabor trace formula, and the periodic structures it is built on are tori supporting closed trajectories in phase space. Here we show how to extend this connection into the domain of quantum many-body systems displaying integrability in the sense of the Bethe ansatz, where a classical limit cannot be rigorously defined due to the presence of singular potentials. Formally following the original derivation of Berry and Tabor (1976 Proc. R. Soc. A 349 101), but applied to the Bethe equations without underlying classical structure, we obtain a many-particle trace formula for the density of states of N interacting bosons on a ring, the Lieb–Liniger model. Our semiclassical expressions are in excellent agreement with quantum mechanical results for

N
=
2
,
3

and 4 particles. For N = 2 we relate our results to the quantization of billiards with mixed boundary conditions. Our work paves the way towards the treatment of the important class of integrable many-body systems by means of semiclassical trace formulae pioneered by Michael Berry in the single-particle context.
Hydraulic Performance of a Solar-Powered Drip Irrigation System
Authors: Hameed Hasanen Saeed , Jebur Hussein A.
Published: April 2023

The effect of emitter type and operating pressure on some hydraulic properties of a solar-powered drip irrigation system, under three types of dots, Turbo, Spiral, and GR, and three operating pressures100, 150 and 200 cm piezo meters were used. The results showed an increase in the values of the emitters discharge rate, emission consistency, and the decrease in the values of the variance ratio in the discharge and the coefficient of manufacturing variation by increasing the operating pressure for the Turbo, Spiral and GR emitters, respectively. The highest values of the droplet discharge rate were 4.98 and 5.56 L.hr-1 for GR and Spiral compared to 7.31L.hr-1 for Turbo type. The results showed that the operational pressures had a significant effect on increasing the rate of discharge and the consistency of the emission and decreasing the values of the rate of synthetic variation and the percentage of variation in the discharge, as the lowest coefficient of variation was 0.0260, 0.0393 and 0.0436 for the Turbo, Spiral and GR emitter, respectively. The use of different operating pressures led to an increase in the rate of discharge as well as the values of consistency of the flow and reduced the percentages of variation in expenses and the coefficient of manufacturing variation of the drippers. The average expenditure values were 3.732, 4.679 and 5.952 liters.hour-1 for operating pressures 100, 150 and 200 cm, respectively. The emission consistency values were also increased and were 91.11, 93.78 and 95.53%, and the coefficient of variation ratios were reduced by 32.13, 17.08 and 8.89% for the aforementioned operating pressures.
Response of Royal prunus armeniaca L. Apricot Trees to Humic Acid and Microelements Fertilization
Authors: Ali Tara Aram , Nazar Hasan Mohammed
Published: April 2023

The experiment was carried out at private farms in Al-Daraman area / Kirkuk governorate during the growing season (2021-2022). The experiment included two factors, the first Factor is three concentrations of Humic (0 without addition,5,10) gL-1. The second factor is three mixture of minor elements. The experiment was carried out according to Randomized Complete Block Design (RCBD) with three replicates. The results showed that the adding with Humic at a concentration of 10gL-1 gave significantly increment in the Length of Branches, Dry Weight of leave, leave area, chlorophyll content of leaves, As it reached 13,573, 54,601, 19.8590, and 15.3900 respectively. The study also showed a mixture of minor elements had highest values in as all the studied characteristics. On the other hand, the interaction treatment increased significantly in the plant height and leaf area, while the interaction treatment between the concentration 10gm L-1 and higher mixture of minor elements gave a significant improvement in the other of the studied characteristics.
The design of a high-voltage pulsed electric field (hpef) device for non-liquid materials based on microcontroller
Authors: Hariono B , Kautsar S , Brilliantina A , Rachmanita R E , Nuruddin M , Abdurahman A , Kurnianto M F , Wijaya R
Published: April 2023

High-voltage pulsed electric field (HPEF) is one of the technologies applied in the food industry with the principle of non-heat treatment with a short pre-treatment time and no pollution is produced. The main benefit of this tool is to kill microbes in the food industry. In addition to non-thermal sterilization, HPEF can also be used for electroporation. Cell electroporation is the application of an electric voltage to the cell. The cells are damaged (broken/porous) without destroying the bioactive components present in the cells. Previous studies have shown that materials treated with HPEF increase the yield when distilled. It can occur due to the electroporation process, namely the breakdown of the oil cell network, so that the distillation process is efficient (can reduce distillation time and increase the quantity of oil). The care box is designed with dimensions of 60cm x 40cm x 30cm which is made of acrylic material. The electrodes used a 60cm x 40cm plate mounted on a linear drive to adjust the treatment distance. HPEF uses a 15kV neon sign transformer. The transformer input frequency setting is set with a dimmer. A microcontroller is installed to adjust the shock period on the electrodes. Based on trials, the device can be used for various solid materials with different volumes.
RR-BS correspondence—a localization phenomenon of the index in geometric quantization
Authors: Yoshida Takahiko
Published: April 2023

In the Kostant-Souriau formulation of geometric quantization, one needs a supplemental structure, so called a polarization, in order to construct a quantum Hilbert space. So, it is natural to ask whether the obtained quantum Hilbert space depends on the choice of polarizations. This is a survey article for recent progress in the study of this problem and its generalization.
Preprint Highlight: Age-dependent loss of cohesion protection in human oocytes
Authors: Subramanian Vijayalakshmi V.
Published: April 2023

Age-dependent loss of cohesion is a determinant of aneuploidy in human oocytes. Mechanisms for how this loss is triggered with age are not known. Using oocytes from human participants of various ages, the authors correlate loss of Sgo2, a protector of cohesins, with age-related meiosis II cohesion defects including increased inter-kinetochore distances and single chromatids. High-resolution microscopy reveals age-dependent loss of Sgo2 specifically from pericentromeric bridges, but not from centromeric regions. This study highlights the role of pericentromeric cohesins in upholding sister-chromatid cohesion, even when centromeric cohesins are protected. This work is relevant to researchers interested in chromosome biology, meiosis, aneuploidy mechanisms, and fertility.

This preprint has been assigned the following badges: New Hypothesis.

Read the preprint on bioRxiv ( Mihalas et al., 2023 ): https://doi.org/10.1101/2023.01.13.523952 .
Insights from specimen data for two economicChrysobothrisspecies (Coleoptera: Buprestidae) in the western United States
Authors: Rudolph Erica A , Wiman Nik G
Published: April 2023

Chrysobothris mali Horn and Chrysobothris femorata (Olivier) (Coleoptera: Buprestidae) are wood-boring beetles native to western North America. Both species are highly polyphagous, feeding on a wide range of deciduous trees and shrubs, including fruit and nut trees as well as shade trees grown as nursery stock. Chrysobothris femorata is widely distributed across North America, while C. mali occurs west of the Rocky Mountains. There is a notable lack of basic biological information regarding both species’ phenology and distributions in the Pacific Northwest. To better understand the biology of these economically important insects, seasonal adult collection information, host plant association data, and morphological measurements were collected from preserved specimens residing in 5 major regional arthropod collections. Label information was collected from 661 C. mali and 165 C. femorata specimens. Collection location data were used to create a map of C. femorata and C. mali distributions in the western United States, indicating that C. femorata is significantly less abundant in California, Oregon, and Washington than C. mali. Of the 50 associated plant taxa noted on specimen labels, only 4 associations were shared between the species, potentially indicating host specialization. New reproductive hosts are recorded for C. femorata (2 hosts) and C. mali (3 hosts). Tree species commonly damaged by flatheaded borers in commercial orchards and nurseries were not present in the historical records. The insights gleaned from specimen data allow researchers to better understand the biology and ecology of these understudied, yet economically impactful insects in the western United States.