bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contact tracing for sexually transmitted infections in Aotearoa New Zealand: a review of clinician-notified gonorrhoea and syphilis data
Authors: Murray Catriona , Rose Sally B. , Kvalsvig Amanda , Baker Michael G. 
Published: January 2023

Introduction The sexually transmitted infections (STIs) gonorrhoea and syphilis became notifiable in Aotearoa New Zealand in 2017, requiring diagnosing clinicians to complete an anonymous case report form detailing behavioural, clinical and management information. Surveillance for gonorrhoea occurs through laboratory and clinician notification, whereas syphilis is only clinician-notified. Aim To review information related to contact tracing (partner notification) from routinely collected gonorrhoea and syphilis notification data. Methods Aggregated data on clinician-notified gonorrhoea and syphilis cases in 2019 were analysed to review information related to contact tracing and to estimate numbers of partners requiring contact tracing. Results There were 722 cases of syphilis and 3138 cases of gonorrhoea notified by clinicians in 2019. However, there were 7200 laboratory-notified gonorrhoea cases, so clinician notification occurred for less than half (43.6%, 3138/7200) of the cases, ranging from 10.0 to 61.5% across District Health Board regions. An estimated 28 080 recent contacts of gonorrhoea cases and 2744 contacts of syphilis cases would have required contact tracing in 2019. Contact tracing could not be completed for 20% of syphilis and 16% of gonorrhoea cases due to anonymous contacts, and was ‘initiated or planned’ for 81% of gonorrhoea cases and 79% of syphilis cases. Discussion Although surveillance data for gonorrhoea and syphilis are incomplete, estimates can be obtained about the number and type of contacts, which can be used to inform contact tracing strategies. Optimisation of the content of clinician-completed forms and an improved response rate would provide a more complete picture to inform interventions to address the high and inequitable prevalence of sexually transmitted infections in Aotearoa New Zealand.
A review of multi-scale barriers to transitioning from digital agriculture to a digital bioeconomy
Authors: Eastwood Callum , Turner James A. , Romera Alvaro , Selbie Diana , Henwood Roxanne , Espig Martin , Wever Mark 
Published: January 2023

Abstract
The use of digital technologies in agriculture has received significant attention in the last decade. There is increasing interest in the potential opportunities for digitalization at a broader bioeconomy scale; however, there is limited knowledge of the potential barriers to a digital bioeconomy. This chapter reviews current knowledge on barriers to digital agriculture and uses a case study to relate these barriers to the bioeconomy scale. We found that adoption barriers are not just technical, but include economic, social, and institutional dimensions, and occur at multiple scales involving technology design, farm systems (including supply chains), the agricultural innovation system, and society. Additionally, these barriers can be highly interconnected. For example technical issues around data interoperability cannot be addressed independently of social issues at the farm scale related to perceptions around privacy and transparent use of farmer data. Examining these multi-dimensional and multi-scale issues through a bioeconomy lens highlights the need for directionality in digital bioeconomy innovation and alignment of national policies and initiatives. Rather than assuming that greater use of digital tools is inherently positive for a national bioeconomy, nations should purposely assess and anticipate the potential implications of digitalization. Our review highlights three opportunities for directionality in the digital bioeconomy. The first is for technology design and development to directly respond to and address societal (not only end-user) needs and barriers to uptake. The second is to design and develop data governance, business models, and standards for data, which are transparent, inspire trust, and share benefits of digital technologies among supply chain stakeholders. The third is to considerably broaden the assessment of societal value from digital agriculture. Addressing the adoption barriers to the digital bioeconomy will come from integrated applications of digitalization that are purpose or ‘mission’ led, rather than inherently techno-centric.
Anomalous transport from hot quasiparticles in interacting spin chains
Authors: Gopalakrishnan Sarang , Vasseur Romain 
Published: January 2023

Abstract
Many experimentally relevant quantum spin chains are approximately integrable, and support long-lived quasiparticle excitations. A canonical example of integrable model of quantum magnetism is the XXZ spin chain, for which energy spreads ballistically, but, surprisingly, spin transport can be diffusive or superdiffusive. We review the transport properties of this model using an intuitive quasiparticle picture that relies on the recently introduced framework of generalized hydrodynamics. We discuss how anomalous linear response properties emerge from hierarchies of quasiparticles both in integrable and near-integrable limits, with an emphasis on the role of hydrodynamic fluctuations. We also comment on recent developments including non-linear response, full-counting statistics and far-from-equilibrium transport. We provide an overview of recent numerical and experimental results on transport in XXZ spin chains.
Phase transitions in multiferroic Bi1−xEuxFeO3 synthesized by sol-gel method
Authors: EL-Bey A , Dinia S , El Bahraoui T , Boudad L , Taibi M , Belayachi A , Abd-Lefdil M 
Published: January 2023

Abstract
Bi1-xEuxFeO3 micropowders

0
≤
x
≤
0.20

were synthesized by sol-gel method. X-ray diffraction shows that the crystal structure changes from rhombohedral to cubic symmetry at

x
=
0.20
.

Dielectric properties and loss factor were investigated as a function of temperature. Neel temperature

T

N

of the compounds was measured by differential scanning calorimetry and found to decrease from 668 K to 646 K for

0
≤
x
≤
0.15

and bounce to 667 K for

x
=
0.20
.

The Curie temperature TC which corresponds to the transition from ferroelectric to paraelectric phases was checked out using differential thermal analysis measurements. The TC value increases from 1130 K to 1135 K for

0
≤
x
≤
0.15

while no transition was detected for

x
=
0.20

in accordance with the structural transition from R3c to centrosymmetric Pm3m phase.
A study of action difference on motor imagery based on delayed matching posture task
Authors: Li Mengfan , Zuo Haoxin , Zhou Huihui , Xu Guizhi , Qi Enming 
Published: January 2023

Abstract

Objective. Motor imagery (MI)-based brain-computer interfaces (BCIs) provide an additional control pathway for people by decoding the intention of action imagination. The way people imagine greatly affects MI-BCI performance. Action itself is one of the factors that influence the way people imagine. Whether the different actions cause a difference in the MI performance is unknown. What is more important is how to manifest this action difference in the process of imagery, which has the potential to guide people to use their individualized actions to imagine more effectively. Approach. To explore action differences, this study proposes a novel paradigm named as action observation based delayed matching posture task. Ten subjects are required to observe, memorize, match, and imagine three types of actions (cutting, grasping and writing) given by visual images or videos, to accomplish the phases of encoding, retrieval and reinforcement of MI. Event-related potential (ERP), MI features, and classification accuracy of the left or the right hand are used to evaluate the effect of the action difference on the MI difference. Main results. Action differences cause different feature distributions, resulting in that the accuracy with high event-related (de)synchronization (ERD/ERS) is 27.75% higher than the ones with low ERD/ERS (p < 0.05), which indicates that the action difference has impact on the MI difference and the BCI performance. In addition, significant differences in the ERP amplitudes exists among the three actions: the amplitude of P300-N200 potential reaches 9.28 μV of grasping, 5.64 μV and 5.25 μV higher than the cutting and the writing, respectively (p < 0.05). Significance. The ERP amplitudes derived from the supplementary motor area shows positive correlation to the MI classification accuracy, implying that the ERP might be an index of the MI performance when the people is faced with action selection. This study demonstrates that the MI difference is related to the action difference, and can be manifested by the ERP, which is important for improving MI training by selecting suitable action; the relationship between the ERP and the MI provides a novel index to find the suitable action to set up an individualized BCI and improve the performance further.
A Clustering Algorithm of Electronic Boundary Points for Cadastral Blocks
Authors: Yixiao Wei , Hong Mi 
Published: January 2023

Abstract
The coordinates of boundary points of a number of cadastral blocks can be obtained by electronic boundary points automatically, while the automation of data processing of coordinates needs to be improved. This paper focuses on the automatic clustering of electronic boundary point coordinates and analyses the location distribution and angle characteristics of cadastral blocks with real coordinates data from 6 villages. In this paper, a strategy is proposed that one boundary point of every cadastral block should be marked and Manhattan distance between points should be used as the similarity measure. A clustering algorithm of electronic boundary points for cadastral blocks is designed with the combination of K-means algorithm. The simulation results show the clustering accuracy of the algorithm can be above 0.9 when the number of cadastral blocks is more than 100, and it can be improved as the number of cadastral blocks is controlled within 25. This study provides a reference for optimization of existing electronic boundary points system and automation technology of the cadastral survey.
Study on Physical and Mechanical Properties of Soil in a Loess Landslide
Authors: Huang Xiaolei , Dong Yang 
Published: January 2023

Abstract
This article takes a landslide in Zhidan County as the research object. Based on the field survey before and after the landslide occurred, the engineering geological conditions of the landslide were obtained, the landslide deformation characteristics were mastered, and then the landslide development process was divided into the early stable stage, the creeping deformation stage. the severe sliding stage and the stage after violent sliding. Soil samples of the landslide were taken before and after the landslide occurred, and the physical parameters were measured to analyze the physical properties of the slide zone soil. At the same time, direct shear, triaxial, and ring shear tests were used to obtain the mechanical properties of the landslide soil under different test conditions, and the shear strength index value of the slide zone soil was analyzed. The main conclusions are as follows: After the landslide slides fiercely, the water content increases, the plasticity and compressibility increase, the properties of the slip zone soil deteriorate, and the relevant physical parameters such as the porosity ratio of the slip zone soil at the front edge change little; Moreover, the C and ψ values of the landslide soils decreased significantly, indicating that landslide sliding caused a large degree of shear damage to the landslide soils.
Study on the Safety Analysis of Dredger Fill Sea Sand Reused in Embankment Slope near the Yangtze River
Authors: Liu Yinying , Yan Honglin , Qi Xu-an 
Published: January 2023

Abstract
In view of the shortage of sand and gravel aggregates, the sea sand in coastal areas is used as roadbed filler in road restoration of tunnel project by the Yangtze river. The basic mechanical performance tests were carried out to demonstrate the particle gradation and consistency limit of dredger fill sea sand. Triaxial test and direct shear test were performed to analyze the stress-strain relationship of sea sand shear strength in riverside environment and the law of shear displacement under vertical pressure. The road performance was analyzed by testing the compaction characteristics and deformation resistance of dredger fill sea sand. The riverside slope is always damaged by water flow, therefore, the stability of the dredger fill sea sand road slope under the measures of wrapping soil was analyzed. Based on the analysis of existing measures to improve the safety of sea sand used in road, the technology of sea sand solidified by alkaline coupling agent is proposed.
Study on Smoke Propagation Characteristics for a Train Carriage Fire in a Subway Tunnel
Authors: Tian W , Li Y F , Feng Shan , Su Z H , Yang Q 
Published: January 2023

Abstract
The most serious fire scene in a subway system is that a train catching on fire has to stop in the tunnel. The objective of this paper is to discuss safety evacuation of this scenario. A subway tunnel in Beijing was selecting as research object, and adopting numerical simulation methods to analyze smoke propagation in the tunnel and train carriage. In addition, the influence of train carriage door opening on the smoke spread was studied in the double narrow space formed by the carriage and tunnel. Results show that the opening method of door would affect the smoke spreading path, and the range of high temperature area. For a fire occurred in train carriage, opening of the end door of train can effectively enhance diffusion of smoke into the tunnel. This research is not only helpful to guide the cabin crew to evacuate efficiently and orderly, but also provide guidance for the planning of subway tunnels.
The Dynamic Elastic Modulus Evolution of Pervious Concrete under Sulfate Attack
Authors: Gu Gaohong , Fan Shengjie , Zhang Shuiliang , Song Hui 
Published: January 2023

Abstract
Elastic modulus affects the stiffness of pervious concrete, and stiffness is one of the elements restricting the durability of pervious concrete. To explore the deterioration of dynamic elastic modulus of pervious concrete under sulfate attack, this paper measured the variation of pervious concrete’s mass and density with water-cement ratio of 0.28, 0.31, and 0.34 under sulfate attack. A nondestructive ultrasonic tests were also used to determine the change of the ultrasonic wave velocity reflected from pervious concrete. In addtion, the evolution of the dynamic elastic modulus were analyzed. The results show that the pervious concrete manifests an upward curve followed by a downward movement in its density and dynamic elastic modulus as the corrosion lasting. The pervious concrete with a 0.28 water-cement ratio suffers from the worst deterioration, while the concrete with 0.31 ratio experiences the lightest degeneration.
Research on Optimal Fault Arc Detection Method for Power Line Communication Intelligent Gateway
Authors: Liu Yang , Liu Xueqin , Li Zhaoqiang , Han Guoqiang 
Published: January 2023

Abstract
This paper introduces the shortcomings of the current fault arc detection scheme in the distribution network system, and purposefully designs an arc detection scheme with better safety performance. Through experiments, three types of fault arc detection technologies are compared. Combined with the foundation and security requirements of the distribution network system in the new era, the best arc detection scheme suitable for the intelligent microgrid architecture is proposed. Finally, the future research direction of arc detection based on intelligent gateway is described.
The Low-light License Plate Recognition via CNN
Authors: Zheng Yujie , Guan Lei , Li Haohong 
Published: January 2023

Abstract
The low-light license plate recognition (LPR) is an important task in LPR, and the task of low-light LPR is a challenge in LPR. Compared with ordinary LPR, low-light LPR is more challenging. The first is that there are few studies on low-light LPR, and there is a lack of dedicated datasets. Besides, there are few lightweight networks dedicated to low-light LPR. The lack of lightweight private networks makes it difficult to deploy LPR methods efficiently. Based on this, this paper proposes a low-light LPR method. Specifically, we propose a dataset dedicated to low-light LPR with a sample size of 19,121. Besides, we propose a lightweight LPR method implemented using a lightweight architecture similar to VGG. We also compare with some commonly used lightweight methods, and the comparison results show that our proposed method has better performance. In addition, we also visualized some data that are difficult for the model to identify, and found several types of challenging data. This result is helpful for subsequent researchers to improve on this type of data.
WSN and GNSS based Deformation Monitoring-Frame Design and Case Analysis
Authors: Xia Linyuan , Li Qianxia , Huang Qiuhua , Lin Hong , Zhu Hongyu , Wu Jinhua , Cai Yuezhen , Zhang Xiao , Song Xuejin 
Published: January 2023

Abstract
To maintain safe and smooth operation of urban infrastructures, security evaluation and deformation monitoring have formed a challenging issue, especially for large scale buildings and structures since they are usually built within urban areas and densely populated districts. In recent years, related specific methods have been presented to achieve valid monitoring for these human structures, among which, GNSS, either combined with other spatial technologies such as remote sensing, SAR or InSAR, or sensors including inertial system or total stations, have played active roles for deformation monitoring. We propose a way to combine GNSS with wireless sensor network (WSN) to form a unique approach for deformation monitoring for some special regions that can not be effectively tackled by previous schemes. Our research work lies in two aspects. One is the configuration of networks in which roving GNSS receivers and reference receivers are properly distributed to form a more flexible configuration to suit for specific shapes of structures. The other feature is the employment of wireless sensor network to form a flexible routine for cost-effective data communication within the monitoring areas. Some methods to deal with challenges arisen from impacts like multipath and deformation prediction are also explored and discussed to promote monitoring efficiency. Related tests have been conducted to exemplify our technical routines and verify the feasibility of suggested monitoring schemes.
An RF Fingerprint Extraction Method based on Time-frequency Domain Feature Fusion
Authors: Jin Yanhua , Wei Mengfan , Li Qiuxue 
Published: January 2023

Abstract
Identification and authentication of communication radiation sources using RF fingerprint feature extraction technology is widely used in civilian and military applications and has become a research hotspot. In this paper, an RF fingerprint extraction method based on time-frequency domain feature fusion is proposed. The frequency domain features of WVD and the time domain statistical features (variance, skewness, kurtosis) of the signal are first extracted, and then fused and downscaled using multivariate discriminant analysis to obtain new time-frequency fusion features, which are finally input to the support vector machine for classification and recognition. This method is used to analyze signals of walkie-talkies and signals of cell phones with and without noise, and the experimental results show that this method effectively improves the recognition rate and has good noise immunity compared with using frequency domain features or time domain features alone, and the accuracy is improved by about 5% under the condition of low SNR. When the SNR is -10dB, the recognition accuracy of walkie-talkies can reach 81.6% and that of cell phones can reach 86.1%.
Optimization Study on Underground Excavation of a Newly-Built Tunnel Passing Underneath an Existing Subway Station in Zero Distance and the Construction Parameters
Authors: Xie Zilin 
Published: January 2023

Abstract
With the networked development of subway tunnels, the approaching construction of a newly-built tunnel will bring great threat to the safety of the existing tunnels. In this paper, taking Nanjing Subway Line 5 Passing underneath an Existing Subway Station as an example, the impact of different underpass construction methods on the Project is explored by numerical simulation. As shown in the analysis results, the multi-pilot hole step method has the least impact on the existing station, which can effectively control the progress of vault settlement and surface settlement deformation. The construction would result in large settlement deformation at the center of the existing station, and the closer distance from the central axis of the newly-built tunnel would create a greater settlement value, with the bottom settlement reaching 2.36mm during the excavation of the pilot holes. In the process of excavation, the surface settlement curve changes from the shape “M” to “V”, and the surface settlement due to the removal of temporary support accounts for 66% of the total settlement.
Research on Construction Organization Design and Engineering Cost Application Based on BIM Technology
Authors: Li Ruyu , Zhao Hong , Wang Xin , Wang Yongdong 
Published: January 2023

Abstract
The development of the construction industry promotes the development of BIM technology, which in turn promotes the development of the construction industry. This paper first analyzes the status quo of BIM technology, construction organization design and engineering cost, and then analyzes the construction organization design and engineering cost application based on BIM technology. This paper takes a residential building as an example for detail, uses BIM technology to carry out modeling and measurement, construction schedule plan, site layout and project cost, and conducts the rationality analysis of the quantity and the rationality of the cost. The results show that the development of BIM technology greatly facilitates the construction organization design and engineering cost of construction projects.
A monocular wide-field speed sensor inspired by the crabs’ visual system for traffic analysis
Authors: Guimaraynz Hernán D , Arroyo Sebastián I , Ibáñez Santiago A , Oliva Damián E 
Published: January 2023

Abstract
The development of visual sensors for traffic analysis can benefit from mimicking two fundamental aspects of the visual system of crabs: their panoramic vision and their visual processing strategy adapted to a flat world. First, the use of omnidirectional cameras in urban environments allows for analyzing the simultaneous movement of many objects of interest over broad areas. This would reduce the costs and complications associated with infrastructure: installation, synchronization, maintenance, and operation of traditional vision systems that use multiple cameras with a limited field of view. Second, in urban traffic analysis, the objects of interest (e.g. vehicles and pedestrians) move on the ground surface. This constraint allows the calculation of the 3D trajectory of the vehicles using a single camera without the need to use binocular vision techniques.
The main contribution of this work is to show that the strategy used by crabs to visually analyze their habitat (monocular omnidirectional vision with the assumption of a flat world ) is useful for developing a simple and effective method to estimate the speed of vehicles on long trajectories in urban environments. It is shown that the proposed method estimates the speed with a root mean squared error of 2.7 km h−1.