Miracle-dz/UniFAR-FTUs huggingface dataset:
Data access as a big competitive advantage: evidence from China's car-hailing platforms

PurposeThe online platform is one of the essential components of the platform economy that is constructed by a large scale of the personal data resource. However, accurate empirical test of the competition structure of the data-driven online platform is still less. This research is trying to reveal market allocation structure of the personal data resource of China's car-hailing platforms competition by the empirical data analysis.Design/methodology/approachThis research is applying the social network analysis by R packages, which include k-core decomposition and multilevel community detection from the data connectedness via the decompilation and the examination of the application programming interface of terminal applications.FindingsThis research has found that the car-hailing platforms, which establish more constant personal data connectedness and connectivity with social media platforms, are taking the competitive market advantage within the sample network. Data access discrimination is a complementary method of market power in China's car-hailing industry.Research limitations/implicationsThis research offers a new perspective on the analysis of the multi-sided market from the personal data resource allocation mechanism of the car-hailing platform. However, the measurement of the data connectedness requires more empirical industry data.Practical implicationsThis research reveals the competition structure that relies on personal data resource allocation mechanism. It offers empirical evidence for governance, which is considered as the critical issue of big data research, by reviewing the nature of the data network.Social implicationsIt also reveals the data convergence process of the social system and the technological system.Originality/valueThis research offers a new research method for the real-time regulation of the car-hailing platform.
DESIGN OF HARDWARE-IN-THE-LOOP TEST BENCH FOR BRAKING AND ANTI-SKID OF TRAINS

To meet the needs of train braking and anti-skid simulation, a hardware-in-the-loop test bed based on the co-simulation model of LabVIEW and AMESim was designed. The hardware of the test bench is mainly composed of an industrial personal computer (IPC), the data acquisition cards and the frame control braking devices (excluding the pneumatic valve unit). IPC provides virtual train vehicle, virtual train running environment, virtual electric brake unit and virtual pneumatic valve unit. In the form of a hardware-in-the-loop test bench, it realizes the functions of train traction, braking and anti-skid. Finally, according to the requirements of standard EN 15595, the validation of the test-bed is verified by comparing the actual line data with the simulation data.
Low Body Fat Does Not Influence Recovery after Muscle-Damaging Lower-Limb Plyometrics in Young Male Team Sport Athletes

Aim: This study assessed the influence of fat mass to fat-free mass ratio (FM:FFM) on recovery from plyometric exercise. Method: After assessment of body composition, 20 male team sport players (age 20.7 ± 1.1 years; body mass 77.1 ± 11.5 kg) were divided into low- (n = 10; 0.11 ± 0.03) and normal- (n = 10; 0.27 ± 0.09) fat groups based on FM:FFM ratio. Thereafter, participants completed measurements of knee extensor torque at 60 and 240°∙s−1, countermovement jump flight time, plasma creatine kinase (CK) activity and perceived muscle soreness (VAS) before and at 0, 24 and 48 h after 10 × 10 maximal plyometric vertical jumps. Results: Evidence of muscle damage was confirmed by alterations in VAS, peak torque at 60 and 240°∙s−1 and flight time at 0, 24 and 48 h after plyometric exercise (P < 0.05). CK was increased at 0 and 24 h (P < 0.05) but returned to baseline values by 48 h. No time by group effects were observed for any of the dependent variables (P > 0.05). Conclusion: The current findings indicate that while muscle damage was present after plyometric exercise, the magnitude was similar across the two body composition groups. Applied practitioners can allow for a similar recovery time after plyometric exercise in those with low and normal body fat.
Angiographic Study of the Anatomical Variations of the Anterior Communicating Artery Complex

Introduction: The anterior communicating artery complex consists of two anterior cerebral arteries (ACA), the anterior communicating artery (AComA) and the recurrent arteries of Heubner. ACA is divided into the three segments; A1 originating from the internal carotid artery, A2 extending from AComA and A3 also known as the pericallosal artery. The anatomical variations of the ACoA complex are not adequately discussed. The aim of this study is to detect the anatomical variations in the ACoA complex in patients that don’t have any intracranial vascular pathology. Aims: The present study determines the anatomical Variations of the anterior communicating artery complex. Patients and Methods: The study group consists of 70 subjects, using Digital Subtraction Angiography and Computed Tomography Angiography to visualize the vascular anatomy. Results: About 14.29% (10 patients) Aplastic ACoA, 7.14% (5 patients) have unilateral A1 ACA segment hypoplasia, 2.86% (2 patients) have unilateral A1 ACA segment aplasia. Conclusion: The most common anatomical variant is Aplastic ACoA.
Two-Stage Adaptive Design for Prognostic Biomarker Signatures With a Survival Endpoint

Abstract Cancer biomarker discoveries typically involve using patient specimens. In practice, there is often strong desire to preserve high quality biospecimens for studies that are most likely to yield useful information. Previously, we proposed a two-stage adaptive design for binary endpoints which terminates the biomarker study in a futility interim if the model performance is unsatisfactory. In this work, we extend the two-stage design framework to accommodate time-to-event endpoints. The first stage of the procedure involves testing whether the measure of discrimination for survival models (C-index) exceeds a prespecified threshold. We describe the computation of cross-validated C-index and evaluation of the statistical significance using resampling techniques. The second stage involves an independent model validation. Our simulation studies show that under the null hypothesis, the proposed design maintains Type I error at the nominal level and has high probabilities of terminating the study early. Under the alternative hypothesis, power of the design is a function of the true event proportion, the sample size, and the targeted improvement in the discriminant measure. We apply the method to design of a prognostic biomarker study in patients with triple-negative breast cancer. Some practical aspects of the proposed method are discussed.
Gender differences in organizational commitment and rewards within Japanese manufacturing companies in China

PurposeThe purpose of this paper is to investigate gender differences in organizational commitment (OC) and the relationship between OC and rewards among employees who work for Japanese manufacturing companies within China.Design/methodology/approachThis study utilized hierarchical regression analysis to examine survey data obtained from 27,854 employees who worked for 64 Japanese manufacturing companies within China.FindingsThe results reveal that autonomy and role clarity had a stronger influence, and co-worker support had a weaker influence, on OC for male employees than for female employees. These differences may be because more male employees than female employees prefer working with higher autonomy and well-defined roles than with co-worker support. After all, male employees, who place a great emphasis on independence, competition, decision-making and challenges, rely on intrinsic rewards more than social rewards.Research limitations/implicationsThis study used data collected from Japanese manufacturing companies to understand the differences between OC and rewards in local male and female Chinese employees. We recommend that future research uses other national affiliates to clarify the characteristics of male and female Chinese workers more objectively and to test the validity of this research.Practical implicationsThe results of this study support revising human resource management practices within multinational enterprises to enable female and male host-country workers to contribute to their companies on a long-term basis by taking into account the differences between the cultures of the home and host countries.Originality/valueAlthough previous research has elucidated the OC–rewards relationship in particular countries, it has not met the requirements of foreign managers from different corporate cultures who face differences in the OC–rewards relationship between their male and female employees. In this sense, this research is the first attempt to tackle this theme and contribute to the literature.
Survivorship Bias in Comparative Politics: Endogenous Sovereignty and the Resource Curse

Cross-national statistical research based on “all country” data sets involves no deliberate selection and hence ignores the potential for endogenous selection bias. We show that these designs are prone to selection bias if existing units are subject to differential survival rates induced, in part, by treatment. Using rudimentary graph theory, we present survivorship bias as a form of collider bias, which is related to but distinct from selection on the dependent variable. Because collider bias is always relative to a specific causal model, we present a causal model of post-colonial sovereignty on the Arabian Peninsula, show that it implies survivorship bias in the form of false positives with respect to the political resource curse, and provide historical evidence confirming that the model correctly depicts the creation of sovereign countries on the Arabian Peninsula but not elsewhere. When we correct for endogenous selection bias, the effect of oil on autocratic survival is shown to be negligible. The study motivates the need to think more broadly about the nature of the data-generating process when making causal inferences with observational data and to construct statistical models that are sensitive to treatment heterogeneity and rooted in context-specific knowledge and qualitative inferences.
Detection of Spin Polarized Band in VO2/TiO2(001) Strained Films via Orbital Selective Constant Initial State Spectroscopy

The VO2 is a 3d1 electron system that undergoes a reversible metal–insulator transition (MIT) triggered by temperature and characterized by an interplay between orbital, charge and lattice degrees of freedom. The characterization of the MIT features are therefore extremely challenging and powerful investigation tools are required. In this work, we demonstrate how a combination of resonant photoemission and constant initial state (CIS) spectroscopy can be used as an orbital selective probe of the MIT studying three different VO2/TiO2(001) strained films. The CIS spectra of the V 3d and V 3p photo-electrons shows sensitivity to different orbital contribution and the presence of a spin polarized band close to the Fermi level.
Academic procrastination and test anxiety: A cross-lagged panel analysis

Abstract The purpose of this study was to investigate the cross-lagged relationships between academic procrastination and test anxiety. A sample of Chinese adolescents from a high school in Changsha City, HuNan Province, China participated in this study. The participants completed the Aitken Procrastination Inventory and the Test Anxiety Scale at two times during a semester. Pearson correlation analysis showed academic procrastination and test anxiety to be positively correlated. Cross-lagged panel analyses demonstrated that academic procrastination at Time 1 predicted test anxiety at Time 2, while test anxiety at Time 1 did not predict academic procrastination at Time 2. Within the limits of the design, we found that academic procrastination may lead to an increase in test anxiety, but test anxiety did not predict the future level of academic procrastination. It is recognised that the relationship between anxiety and procrastination is complicated. It is suggested that a focus on interventions for academic procrastination may help to reduce students’ test anxiety, but not necessarily vice versa.
Imagined mobilities and the materiality of migration: the search for ‘anchored lives’ in post-recession Europe

ABSTRACT The dichotomy between mobility and migration became a disputed conceptual distinction during the expansion of European Free Movement between the 1990s and early 2000s. Then, mobility literature sought to open a new chapter in the study of contemporary human lives by theorising them as ‘liquid' and suggesting movement as their universalising feature. Intra-European migrants have been increasingly characterised by their ‘mobility spirit' and therefore as legally unconstrained, driven by individualised behaviours and engaged in temporary cross-border movements. Set in the backdrop of post-recession intra-European migration, this paper explores how migrants’ mobility spirit is being negotiated with the need to anchor their lives to stable relationships and to the attainment of financial security. It draws on interviews conducted with Italian young adults in London and shows how imagined projects of temporary mobility materialize into longer-term migration experiences where the search for anchored rather than liquid lives becomes more prominent. Henceforth, the analysis challenges the typified profile of EU movers by pointing at their quest for social and financial stability and by exposing their personal vulnerabilities while making the theoretical distinction between migration and mobility less relevant.
An improved time support estimation method for overlapping automatic dependent surveillance‐broadcast signals in low signal‐to‐noise ratio region

In the satellite‐based application, due to the low signal‐to‐noise ratio (SNR) of received signals, it is highly difficult to estimate the time support of overlapping automatic dependent surveillance‐broadcast (ADS‐B) signals, resulting in the failure of many separation algorithms. Besides, it is troublesome to determine the detection threshold for unknown noise variance. In this paper, we first present three estimation methods of noise variance based on eigenvalue decomposition, which are suitable for constant and slowly varying noise variance, respectively. The proposed time support estimation is therefore of constant false alarm rate property. Moreover, according to the characteristic of ADS‐B signals, we design a matched filter and propose two estimation schemes of direct form and indirect form, which significantly improves the estimation accuracy and detection probability. Finally, in combination of the well‐known projection algorithm (PA), it is concluded that with the proposed estimation method, PA exhibits a satisfactory separation performance at low SNRs.
CdTe Nanocrystal Synthesis in SiO2/Si Ion‐Track Template: The Study of Electronic and Structural Properties

The synthesis of CdTe nanocrystals (NCs) is performed by electrochemical deposition into prepared ion tracks in a a‐SiO2/Si‐n template. As a result, CdTe NCs are obtained in a wurtzite (WZ) crystal phase. The measurement of the current–voltage characteristics shows that the CdTe (WZ NC)/SiO2/Si system obtained in this way has n‐type conductivity. Computer simulations using the CRYSTAL computer code show good agreement between experimental and calculated lattice parameters. The theoretical calculations also show that the crystal has a direct bandgap at the Γ point of the Brillouin zone.
Study of thyroid dysfunction in type 2 diabetes mellitus

Background: Aim was to study prevalence of thyroid dysfunction in type II diabetes mellitus (T2DM) patients. Methods: The present study was a cross sectional observational study, which focused on cases of diabetes mellitus. Study was conducted in Departments of Medicine, SBKS MI & RC, a tertiary care centre for a period of 6 months. All the patients of T2DM were included. Total of 263 patients were enrolled which involved indoor, outpatient and diabetic clinic attending patients. A detailed history taking, clinical examination and relevant investigations (Hb%, Total count, platelet count, serum creatinine, FBS, PP2BS, HbA1C, S.TSH, F.T3 and F.T4). Appropriate statistical analytics were used and important correlations and conclusions were drawn. Results: A study of thyroid dysfunction (TD) in T2DM patients which included 263 diabetic patients, out of them 67 had thyroid dysfunction. Out of these 67 patients 43 were female and 24 were male. This suggests that female was more prone to thyroid dysfunction than males. Out of 67 TD patients, 42 were above the age of 50 year. So, as the age increases the prevalence of TD also increases thyroid dysfunction also depends on the glycaemic control of the patients. Out of 67 patients 22 patients had>8.0 HbA1C level. In our study we found that as the glycaemic control became poorer the prevalence of TD increase in hypothyroid but not in hyperthyroidism. Conclusions: Following conclusions were drawn from this study TD is more common in female than male, more after the age of 50 year, in T2DM patients. Hypothyroidism is more common with poor glycaemic control and long duration of T2DM patients. But for hyperthyroidism data which we evaluated was not significant and further conclusion bigger study is needed.
Regions of existence for Stoneley waves in auxetic and non-auxetic media

Abstract Regions of existence for Stoneley waves are analyzed for the case when isotropic contacting media have different values of Poisson's ratios. The analysis is based on solving the secular equation in Scholte’s form for Stoneley wave velocity. It reveals substantial similarity in shapes of regions of existence at all studied values of Poisson's ratio pairs. A recently observed gap in regions of existence for media with equal Poisson’s ratios is also observed in cases when contacting media have different Poisson’s ratios including both auxetic and non-auxetic media.
Investigating the Future of Ultrafast Charging: A Choice Experiment in the Netherlands

Ultrafast charging is developing and will soon be available to electric vehicles (EV). This research focuses on the feasibility of ultrafast charging for EV passenger cars in the Netherlands. We carried out a stated choice experiment with 311 respondents (all EV drivers) and developed mixed logit models based on random utility maximization. In deciding which charging type to choose, this research identified the charging point characteristics, price, proximity to shopping facilities, certainty of charging availability and not having to make a detour as key influential factors for EV drivers. Price changes and not having to make a detour substantially affect users’ choices for the charging types. Contrary to expectations, no significant results were found for urban density, age, technology awareness and importance of sustainability. Finally, the research results show that there is demand for ultrafast charging in the Netherlands even if users have to pay slightly more compared to other forms of charging.
A Low‐Intensity, High‐Frequency Intervention to Reduce Procrastination

Studies assessing the efficacy of interventions aimed at reducing procrastination have generally lacked robust longitudinal measurement tools. Recent developments in communication technology and applications of the Experience Sampling Method (ESM) have made observations of such dynamic phenomena possible. We leveraged recent advancements in smartphone technology and ESM to measure delay associated with procrastination, while testing a low‐intensity, high‐frequency intervention to reducing that delay. First‐year university students (N = 107) reported their progress on an assignment twice daily over 14 days prior to the required submission date. Half (n = 51) were randomly allocated to an intervention condition in which they were also asked open‐ended questions designed to prompt reflection on 4 domains proposed to reduce procrastination, namely expectancy, value, delay sensitivity, and metacognition. Multilevel mixed effect models revealed lower behavioral delay in the intervention condition compared to the control condition. This effect was strongest in those who at baseline scored below the median on trait procrastination. Behavioral delay over the 14‐day period was not associated with later assignment submission or lower assignment marks. These findings support a novel method for reducing delay and suggest procrastination can be alleviated in a wide range of contexts using relatively inexpensive and non‐intrusive strategies.
Dirac Fermions in Half‐Metallic Ferromagnetic Mixed Cr 1−x MxPSe3 Monolayers

The electronic and magnetic properties of pristine CrPSe3 and mixed Cr 1−x MxPSe3 (M = Zn, Cd, Hg) monolayers are studied using density functional theory including an on‐site Coulomb term (density functional theory (DFT) +U ) and tight‐binding approach. While pristine CrPSe3 monolayer has an antiferromagnetic ground state, its alloying with MPSe3 may give rise to half‐metallic ferromagnet with high Curie temperature. The resulting monolayers demonstrate single‐spin Dirac cones of mainly Cr‐d character located in the first Brillouin zone directly at the Fermi energy. The calculated Fermi velocities of Dirac fermions indicate very high mobility in mixed Cr 1−x MxPSe3 monolayers, that makes this material appealing for low‐dimensional spintronics applications.
Coherent population transfer and dark resonances in SO2

Highly efficient population transfer between the (0,0,0) and the (9,1,0) vibrational levels of the electronic ground state X 1A1 of SO2 is demonstrated. The process relies on stimulated Raman scattering with adiabatic passage induced by two suitably delayed ultraviolet laser pulses with nearly transform‐limited bandwidth. A transfer efficiency of 100% is achieved. The associated dark resonance is observed. Properties of the latter are compared for delayed and fully overlapping pulses.
Agent-Based Modeling of Rumor Propagation Using Expected Integrated Mean Squared Error Optimal Design

In the “Age of the Internet”, fake news and rumor-mongering have emerged as some of the most critical factors that affect our online social lives. For example, in the workplace, rumor spreading runs rampant during times when employees may be plagued with uncertainty about the nature and consequences of major changes. Positive information should be widely propagated as much as possible; however, we must limit the spread of rumors in an effort to reduce their inherently harmful effects. The purpose of this research is to explain the mechanisms for controlling rumors and suggest an approach for dispelling the rumor effect in the workplace. In this study, we will present a simple simulation framework of agent-based modeling and apply Social Impact Theory to explain rumor propagation within social networks. Based on our results, we have found that organizations can significantly reduce the spread of the rumors by improving the workplace environment and instituting counseling for those in management positions.