Anhui University of Finance and Economics

About: Anhui University of Finance and Economics is a education organization based out in Bengbu, China. It is known for research contribution in the topics: China & Hopf bifurcation. The organization has 933 authors who have published 1070 publications receiving 11500 citations. The organization is also known as: AUFE.

Studying the psychology of coping negative emotions during COVID-19: a quantitative analysis from India.

Abstract: The outbreak of the COVID-19 virus adversely affected the material and mental well-being of the infected individuals and their families. The poor health system combined with lack of fear of infection has created significant negative health effects for people. The present research consider the notable models of coping with negative emotions, including '3Cs' and 'direct action and palliation approach'. With the observation method's help, a detailed perspective was found on people's coping processes, categorized as psychological, control, coherence, and connectedness coping. The present study considers the notable models of dealing with negative feelings, including '3Cs' and 'direct intervention and palliation strategy'. With the observation method's support, a detailed viewpoint was found on people's coping mechanisms, categorized as neurological, regulation, coherence, and connectedness coping. Using the ANOVA and t-tests, a significant augmentation in people's negative emotions was found since the beginning of the pandemic. Using GMM regression technique, 'avoidance', 'proactive preparedness', 'emotional resilience', 'entertainment', and 'spiritualism' were highly significant techniques in curbing the negative emotions during the COVID-19 pandemic. Meanwhile, the LOGIT regression found cumulative negative emotions and emotions about negative career outlooks to be the most significant to bring negative emotions to normalcy. The study suggests that policymakers design a national-level strategy to strengthen the mental health systems to boost mental well-being.

A Particle Filter Based Reference Fingerprinting Map Recalibration Method

Abstract: A Reference Fingerprinting Map (RFM) is the basis for fingerprinting-based Wifi positioning. The quality of RFM is one of the major factors for positioning accuracy. The RFM constantly changes in many dynamic indoor environments and needs to be updated accordingly. The problem of keeping the RFM up-to-date is referred to as the RFM recalibration problem. The key to the RFM recalibration problem is to annotate the collected fingerprints with coordinate locations. Existing methods can be divided into two categories: (1) adopting external measurements (e.g. user-contributed positions) or external hardwares; (2) only adopting the measurements available from a common commercial off-the-shelf (COTS) smartphone. In this paper, a crowd-sourced RFM recalibration method is proposed adopting particles filters. The proposed method belongs to the second category, which has the advantage of independence from human intervention or additional hardwares. In the proposed method, the fingerprints in the RFM denote on-off values showing the availability of access points (APs) rather than the actual Received Signal Strength (RSS) values. Particle filters (implemented per-user data) are adopted for fusing the information of Pedestrian Dead Reckoning (PDR) and Wifi-based positioning results. The quality of the estimated trajectory can be indicated through the divergence of the particles. The trajectories with large particle divergence are discarded, and otherwise, a particle filter based smoothing technique is adopted to backtrack or re-estimate the trajectories to make them more accurate. Then the re-estimated trajectories can be adopted to recalibrate the existing RFM. From the designed experiments, we show that (1) the proposed method is effective for RFM recalibration; (2) although consumes more running time, the proposed method has better performance than the classical Radio Map Automatic Annotation (RMAA) and the Participatory Indoor Localization System (Piloc) methods.

Multiplicity of positive solutions to second-order singular differential equations with a parameter

Abstract: We study the existence and multiplicity of positive periodic solutions for second-order nonlinear damped differential equations by combing the analysis of positiveness of the Green function for a linear damped equation. Our nonlinearity may be singular in its dependent variable. The proof of the main result relies on the Guo-Krasnosel’skii fixed point theorem on compression and expansion of cones.

Are all investment decisions to subscribe to new stocks mindless?: Investor heterogeneity and behavior in the process of subscribing to new stocks

Abstract: The IPO process is a way for companies to improve their corporate governance and for investors to assess company quality This paper posits that investor choices vary with differences in investment ability and experience Three groups of investors with large holdings, namely individual investors, blue-chip institutional investors and underperforming institutional investors, are compared by their use of three types of corporate governance information: board characteristics, equity structure and affiliated relationships Overall, institutional investors make greater use of corporate governance information than individual investors, with blue-chip institutional investors making the greatest use Further, bull-bear markets exert a significant influence on the behavior of both individual and underperforming institutional investors These results enrich the IPO literature and contribute to optimal social fund allocation in the stock market

Hopf bifurcation analysis for an epidemic model over the Internet with two delays

Abstract: Taking the delay due to the latent period of computer viruses and the delay due to the period that the anti-virus software uses to clean the computer viruses as the bifurcation parameters, local Hopf bifurcation of an epidemic model over the Internet is studied. We discuss the existence of the Hopf bifurcation under four conditions: (1) $\tau _{1}>0$ , $\tau_{2}=0$ , (2) $\tau_{1}=0$ , $\tau_{2}>0$ , (3) $\tau_{1}=\tau _{2}=\tau>0$ , and (4) $\tau_{1}>0$ , $\tau_{2}\in(0, \tau_{20})$ . Properties of the Hopf bifurcation about condition (4) are investigated by means of the center manifold theorem and the normal form theory. Finally, some simulations are presented to support our obtained results.