bluuebunny/crossref_metadata_2025_split huggingface dataset:
A small UAV tracking algorithm based on AIMM-UKF
Authors: Hou Zhiwen , Bu Fanliang 
Published: May 2021

Purpose
The purpose of this study is to establish an effective tracking algorithm for small unmanned aerial vehicles (UAVs) based on interacting multiple model (IMM) to take timely countermeasures against illegal flying UAVs.

Design/methodology/approach
In this paper, based on the constant velocity model (CV), the maneuvering adaptive current statistical model (CS) and the angular velocity adaptive three-dimensional (3D) fixed center constant speed rate constant steering rate model, a small UAV tracking algorithm based on adaptive interacting multiple model (AIMM-UKF) is proposed. In addition, an adaptive robust filter is added to each model of the algorithm. The linear Kalman filter algorithm is attached to the CV model and the CS model and the unscented Kalman filter algorithm (UKF) is attached to the CSCDR model to solve the nonlinearity of the 3D turning model.

Findings
Monte-Carlo simulation comparison with the other two IMM tracking algorithms shows that in the case of different movement modes and maneuvering strength of the UAV, the AIMM-UKF algorithm makes a good trade-off between the amount of calculation and filtering accuracy, which can maintain more accurate and stable tracking and has strong robustness. At the same time, after testing the actual observation data of the UAV, the results show that the AIMM-UKF algorithm state estimation trajectory can be regarded as an actual trajectory in practical engineering applications, which has good practical value.

Originality/value
This paper presents a new small UAV tracking algorithm based on IMM and the advantages and practicability of this algorithm compared with existing algorithms are proved through experiments.
Responsible leadership and employee outcomes: a systematic literature review, integration and propositions
Authors: Haque Amlan , Fernando Mario , Caputi Peter 
Published: May 2021

PurposeThe dominant view of responsible leadership (RL) has so far lacked adequate testing for employees' motivational outcomes, including presenteeism. Presenteeism, or attending work while being ill and unable to work at full capacity, causes productivity loss and imposes a significant economic burden to businesses and national economies. Applying the social identity theory of leadership (SITL), this paper aims to offer a conceptual framework supporting the relationship between RL and presenteeism and incorporating the mediating roles of organisational commitment and employees' turnover intentions.Design/methodology/approachThis paper conducts a systematic literature review using a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flowchart with the existing research on RL, presenteeism, organisational commitment and employee turnover intentions covering the main contributors to this research stream. The proposed model offers eight propositions to promote the examination of RL in more insightful ways.FindingsA shift in focus to the aspect of value-based leadership and presenteeism allows this paper to explore probable employee motivational outcomes, especially with consideration of organisational commitment and turnover intentions. While extant studies about presenteeism have tended to identify negative consequences, this paper explores different contexts in which RL could be crucial and positive. Based on a PRISMA flowchart, this paper provides a conceptual framework and directions that scholars might use to guide organisations and evaluate future research studies in RL and presenteeism.Research limitations/implicationsThe implications of this paper lie first in highlighting the demand for scholars to employ RL when conducting research reviews in organisational leadership and presenteeism. Beyond this broad purpose, this paper will help researchers to develop a holistic and pragmatic research approach more systematically and coherently. It is hoped that this conceptual framework can potentially lead to higher employee productivity and retention.Originality/valueThe systematic literature review offers a novel framework that will allow future researchers to conduct and explore empirical studies in organisational leadership. The suggested propositions will direct future scholars and practitioners to explore solutions in which presenteeism can be recognised at work and managed to achieve practical application of RL within organisational settings.
How can an economic scenario generation model cope with abrupt changes in financial markets?
Authors: Lee Yi-Hsi , Hsieh Ming-Hua , Kuo Weiyu , Tsai Chenghsien Jason 
Published: May 2021

PurposeIt is quite possible that financial institutions including life insurance companies would encounter turbulent situations such as the COVID-19 pandemic before policies mature. Constructing models that can generate scenarios for major assets to cover abrupt changes in financial markets is thus essential for the financial institution's risk management.Design/methodology/approachThe key issues in such modeling include how to manage the large number of risk factors involved, how to model the dynamics of chosen or derived factors and how to incorporate relations among these factors. The authors propose the orthogonal ARMA–GARCH (autoregressive moving-average–generalized autoregressive conditional heteroskedasticity) approach to tackle these issues. The constructed economic scenario generation (ESG) models pass the backtests covering the period from the beginning of 2018 to the end of May 2020, which includes the turbulent situations caused by COVID-19.FindingsThe backtesting covering the turbulent period of COVID-19, along with fan charts and comparisons on simulated and historical statistics, validates our approach.Originality/valueThis paper is the first one that attempts to generate complex long-term economic scenarios for a large-scale portfolio from its large dimensional covariance matrix estimated by the orthogonal ARMA–GARCH model.
Dry sliding tribological properties of A356-SiCP aluminum matrix composites prepared by vacuum stir casting
Authors: Pan Jiaqi , Liu Xiaoshan , He Guoqiu , Ge Bin , Le Peiwen , Li Jingquan , Zhou Zhiqiang 
Published: May 2021

Purpose
The purpose of this paper is to understand the effect of particle content, applied load and sliding speed on the tribological properties of A356-SiCP composites manufactured using a newly developed vacuum stir casting technique.

Design/methodology/approach
A356 alloy reinforced with 10, 15 and 20 vol% SiC particles was prepared by vacuum stir casting. Tribological tests were carried out on block-on-ring tribometer under dry sliding conditions, room temperature. Wear mechanism was investigated by scanning electron microscope and energy dispersion spectrum.

Findings
SiCP is homogeneously dispersed in the matrix. The increase in SiCP content decrease wear rate, but it leads to an increase in coefficient of friction. The wear rate increase and friction coefficient present different variation trends with increasing load. For A356-20%SiCP composite, when the load is less than 10 MPa, wear rate and friction coefficient under sliding speed of 400 rpm are lower than those of 200 rpm. Wear mechanism transition from abrasion, oxidation, delamination, adhesion to plastic flow as load and sliding speed increasing.

Practical implications
Results of this study will help guide the use of A356-SiCP in many automotive products such as brake rotors, brake pads, brake drums and pistons.

Originality/value
There are few paper studies the effect of particle content, applied load and sliding speed on the tribological properties of A356-SiCP composites. Aluminum matrix composites with uniform distribution of reinforcing particles were successfully prepared by using the newly developed vacuum stir casting technique.
Determinants of the use of accounting systems in microenterprises: evidence from Chile
Authors: Najera Ruiz Tonatiuh , Collazzo Pablo 
Published: May 2021

PurposeThe purpose of this research is to contribute to knowledge-building on microenterprises in emerging economies, by assessing the determinants that drive their use of accounting systems.Design/methodology/approachA probabilistic model was developed to determine the likelihood that a micro-firm would adopt an accounting registry system as a function of a series of contingencies and personal characteristics of their owners/managers. Data from the Microentrepreneurship Survey (EME), from the National Institute of Statistics of Chile for 2017 was used.FindingsThe findings suggest that access to external funds, the size and the use of technology strongly influence micro-firms' adoption of accounting systems.Research limitations/implicationsDespite the richness and scope of the data, direct measurements of entrepreneurial orientation and environmental uncertainty, both central variables of the contingency theory, were missing. Hence, duly justified proxies were applied. It is also likely that there would be other variables that also influence the probability of using accounting tools.Practical implicationsThe study contributes to a better understanding of microenterprises, and the factors that determine the use of accounting systems. The results highlight that public policies aimed at fostering microenterprises should facilitate access to technology and external funds. Consistent with previous studies, the authors’ findings highlight the importance of training owner/managers on issues related to their business.Originality/valueThis paper contributes to theory by arguably being the first study to confirm that contingency theory does explain the adoption of accounting systems in microenterprises in emerging countries.
A phase III, 52‐week, open‐label study to evaluate the safety and efficacy of 5% sofpironium bromide (BBI‐4000) gel in Japanese patients with primary axillary hyperhidrosis
Authors: Fujimoto Tomoko , Abe Yoichiro , Igarashi Masaru , Ishikoh Akiko , Omi Tokuya , Kanda Hiroki , Kitahara Hiroto , Kinoshita Miwako , Nakasu Ichiro , Hattori Naoko , Horiuchi Yuki , Maruyama Ryuji , Mizutani Haruko , Murakami Yoshiyuki , Watanabe Chiharu , Kume Akihiro , Hanafusa Takaaki , Hamaguchi Masamitsu , Yoshioka Akira , Egami Yuriko , Matsuo Keizo , Matsuda Tomoko , Akamatsu Motoki , Yorozuya Toshiyuki , Takayama Shinichi , Yokozeki Hiroo 
Published: May 2021

AbstractA long‐term study was conducted in Japanese patients with primary axillary hyperhidrosis who completed the preceding 6‐week phase III, confirmatory study of 5% sofpironium bromide gel (hereinafter referred to as sofpironium) to evaluate the safety and efficacy of 52‐week treatment with sofpironium. In the long‐term study, 185 patients who completed the confirmatory study (94 and 91 patients in the vehicle and sofpironium groups, respectively) started to receive sofpironium (switching and extension groups, respectively), and all these patients were included in both the full analysis set (FAS) and the safety analysis set (SAF). In the FAS, there were more females than males (73.0% vs. 27.0%), and median age was 38.0 years. A total of 161 patients (86 and 75 patients in the switching and extension groups, respectively) completed the study at week 52. The proportions of patients with hyperhidrosis disease severity score of 1 or 2 and a 50% or more reduction in total gravimetric weight of sweat were 57.4% in the switching group and 58.2% in the extension group at week 52. The proportions of patients who achieved this efficacy end‐point in the long‐term study were similar to that (53.9%) in the sofpironium group in the confirmatory study. In the SAF, the incidences of adverse events (AEs) were 80.9% in the switching group and 83.5% in the extension group, and the incidences of adverse drug reactions were 39.4% and 45.1%, respectively. AEs that occurred in at least 20% of patients in both treatment groups were application site dermatitis (25.5% and 33.0%, respectively) and nasopharyngitis (31.9% and 23.1%, respectively). Reported AEs were generally mild, and there were no deaths. Serious AEs occurred in three patients, but none were considered related to the study drug. In this study, the efficacy of sofpironium was maintained during 52‐week treatment, and no new safety risk was observed.
The Evolving Wage Structure of Young Adults in Australia: 2001 to 2019
Authors: Birch Elisa R. , Preston Alison C. 
Published: May 2021

Using data from the Household, Income and Labour Dynamics in Australia (HILDA) survey together with OLS and quantile regressions, this paper examines the changing returns to education and the evolving wage structure of young adults (aged 25–34 years) between 2001 and 2019. Estimates show that real wage growth was strong for both males and females over the 2000s, underpinned by wage structure effects. Between 2010/11 and 2018/19 wage growth was flat (zero) for males and subdued for females. Institutional factors are thought to underpin the growth in wages of low‐paid females over recent years, while education investments underpin recent wage growth amongst high‐paid females. Since 2001/2 the wage premium on a degree qualification has declined for males and females. There has been no change in the adjusted gender wage gap across successive cohorts of 25–34 year olds.
Monitoring Turbidity in San Francisco Estuary and Sacramento–San Joaquin Delta Using Satellite Remote Sensing
Authors: Lee Christine M. , Hestir Erin L. , Tufillaro Nicholas , Palmieri Brendan , Acuña Shawn , Osti Amye , Bergamaschi Brian A. , Sommer Ted 
Published: May 2021

AbstractThis study utilizes satellite data to investigate water quality conditions in the San Francisco Estuary and its upstream delta, the Sacramento–San Joaquin River Delta. To do this, this study derives turbidity from the European Space Agency satellite Sentinel‐2 acquired from September 2015 to June 2019 and conducts a rigorous validation with in situ measurements of turbidity from optical sensors at continuous monitoring stations. This validation includes 965 matchup comparisons between satellite and in situ sensor data across 22 stations, yielding R2 = 0.63 and 0.75 for Nephelometric Turbidity Unit and Formazin Nephelometric Unit (FNU) stations, respectively. This study then applies remote sensing to evaluate patterns in turbidity during the Suisun Marsh Salinity Control Gates Action (“Gates action”), a pilot study designed to increase habitat access and quality for the endangered Delta Smelt. The basic strategy was to direct more freshwater into Suisun Marsh, creating more low salinity habitat that would then have higher (and more suitable) turbidity than upstream river channels. For all seven acquisitions considered from June 29 to September 27, 2018, turbidity conditions in Bays and Sloughs subregions were consistently higher (and more suitable) (26–47 FNU) than what was observed in the upstream River region (13–25 FNU). This overall pattern was observed when comparing images acquired during similar tidal stages and heights.
“Objectivity” as a bureaucratic virtue
Authors: ASSOR YAEL 
Published: May 2021

ABSTRACTAcross bureaucratic contexts, “objectivity” is a dominant conception of appropriate conduct. But what does it mean for bureaucrats to work “objectively”? For staffers of the Israeli government's Committee for Health Care Services, objectivity is understood as a key bureaucratic virtue, one that promotes the ethical goal of fair resource allocation. To them, objective decision‐making is based on adopting an “unemotional” attitude. Aware of the life‐and‐death implications of committee decisions, they attempt to work “unemotionally” by engaging what I term amoral sensibility for unemotionality, a tendency to avoid exposure to patients’ subjective experience. Cultivating this sensibility has concrete effects on the committee's decisions and on patients’ place in medical decision‐making. Examining “objectivity” as a morally desired disposition, rather than as a static construct, yields its reconceptualization as an enduring intersubjective achievement. This approach offers another way to examine the workings of power and politics in state bureaucracies. [objectivity,bureaucracy,virtue ethics,morality,emotion,social welfare,health care,Israel]
Bones of contention
Authors: NGÔ TÂM T. T. 
Published: May 2021

ABSTRACTPostcolonial Vietnam is characterized by the interplay between necropolitics and necrosociality, as practiced respectively by the militarized state and a society that traditionally maintains relations with the dead. This interplay is key to understanding conflicts in Vietnam over the bones of unidentified war dead. On the one hand, such bones can challenge the state's sovereignty when it assumes the responsibility of taking care of them. On the other hand, they exert strong power over the living, prompting quests to place them in the right kinship and sociopolitical orders—or to erase their memory. This was made dramatically evident in 2011 by one set of human remains, allegedly belonging to a fallen soldier of the 1979 Sino‐Vietnamese border war—a conflict that both sides’ governments prefer to forget. These remains illuminated the contention in the governing of war dead in postwar Vietnam. Moreover, they made evident the tension in anthropological inquiry about the ontology of human remains. [human bones,unidentified war dead,Sino‐Vietnamese border war,necropolitics,necrosociality,Vietnam]
Geographies of labour in a changing climate
Authors: Parsons Laurie , Natarajan Nithya 
Published: May 2021

AbstractClimate change has profound implications for the geography of work. As the papers in this special section aim to show, changes to the climate – both long and short term – are not experienced directly but through the lens of working life. Those experiencing climate change are not atomistic entities, but connected agents, deeply embedded within global systems: as market traders or factory workers; rural farmers or civil servants. The changing climate does not therefore mean changing weather, but changing terms of work. What was once sufficient for personal and family needs may no longer be so in a new environment, meaning reduced quality of livelihoods, longer working hours, and a greater vulnerability to exploitation by employers. This special section brings together insights from a range of contexts to explore this situated experience of climate change, highlighting how life and work within global production networks combine to determine its experience.
MRI and muscle imaging for idiopathic inflammatory myopathies
Authors: Malartre Samuel , Bachasson Damien , Mercy Guillaume , Sarkis Elissone , Anquetil Céline , Benveniste Olivier , Allenbach Yves 
Published: May 2021

AbstractAlthough idiopathic inflammatory myopathies (IIM) are a heterogeneous group of diseases nearly all patients display muscle inflammation. Originally, muscle biopsy was considered as the gold standard for IIM diagnosis. The development of muscle imaging led to revisiting not only the IIM diagnosis strategy but also the patients’ follow‐up. Different techniques have been tested or are in development for IIM including positron emission tomography, ultrasound imaging, ultrasound shear wave elastography, though magnetic resonance imaging (MRI) remains the most widely used technique in routine. Whereas guidelines on muscle imaging in myositis are lacking here we reviewed the relevance of muscle imaging for both diagnosis and myositis patients’ follow‐up. We propose recommendations about when and how to perform MRI on myositis patients, and we describe new techniques that are under development.
NanoString technology distinguishes anti‐TIF‐1γ+ from anti‐Mi‐2+ dermatomyositis patients
Authors: Preusse Corinna , Eede Pascale , Heinzeling Lucie , Freitag Kiara , Koll Randi , Froehlich Waltraud , Schneider Udo , Allenbach Yves , Benveniste Olivier , Schänzer Anne , Goebel Hans‐Hilmar , Stenzel Werner , Radke Josefine 
Published: May 2021

AbstractDermatomyositis (DM) is a systemic idiopathic inflammatory disease affecting skeletal muscle and skin, clinically characterized by symmetrical proximal muscle weakness and typical skin lesions. Recently, myositis‐specific autoantibodies (MSA) became of utmost importance because they strongly correlate with distinct clinical manifestations and prognosis. Antibodies against transcription intermediary factor 1γ (TIF‐1γ) are frequently associated with increased risk of malignancy, a specific cutaneous phenotype and limited response to therapy in adult DM patients. Anti‐Mi‐2 autoantibodies, in contrast, are typically associated with classic DM rashes, prominent skeletal muscle weakness, better therapeutic response and prognosis, and less frequently with cancer. Nevertheless, the sensitivity of autoantibody testing is only moderate, and alternative reliable methods for DM patient stratification and prediction of cancer risk are needed. To further investigate these clinically distinct DM subgroups, we herein analyzed 30 DM patients (n = 15 Mi‐2+ and n = 15 TIF‐1 γ+) and n = 8 non‐disease controls (NDC). We demonstrate that the NanoString technology can be used as a very sensitive method to clearly differentiate these two clinically distinct DM subgroups. Using the nCounter PanCancer Immune Profiling Panel™, we identified a set of significantly dysregulated genes in anti‐TIF‐1γ+ patient muscle biopsies including VEGFA, DDX58, IFNB1, CCL5, IL12RB2, and CD84. Investigation of type I IFN‐regulated transcripts revealed a striking type I interferon signature in anti‐Mi‐2+ patient biopsies. Our results help to stratify both subgroups and predict, which DM patients require an intensified diagnostic procedure and might have a poorer outcome. Potentially, this could also have implications for the therapeutic approach.
Multi‐lingual text detection and identification using agile convolutional neural network
Authors: Yegnaraman Aparna , Valli S. 
Published: May 2021

AbstractMulti‐lingual scene text detection and identification is a challenging task in today's world due to the prevalence of many digitized multi‐lingual documents, images, and videos. A valuable method for detecting multi‐lingual text from natural scene images is proposed which uses the convolutional neural network, namely, You Only Look Once (YOLOv3) as the backbone. The proposed system is more agile than YOLOv3 with the introduction of atrous separable convolution (ASC). The multi‐scale prediction in YOLOv3 emphasizes the integration of global features of multi‐scale convolutional layers while it overlooks the blend of the multi‐scale local region features on the same convolutional layer. To overcome this, ASC is applied to efficiently compute dense local region feature maps, thereby reducing computation complexity substantially. Complete IoU loss, which is an accumulation of overlap area, distance, and aspect ratio, is introduced for enhanced accuracy in bounding box regression, wherein IoU designates the measure of overlap between the predicted and the ground truth bounding boxes. The experimental results show that the proposed system is efficacious in detecting multi‐lingual as well as English text from natural scene images.