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Identifying the perceptive users for online social systems

Contributions Conceptualization: Jian-Guo Liu, Xiao-Lu Liu. Data curation: Jian-Guo Liu, Xiao-Lu Liu. Formal analysis: Jian-Guo Liu, Xiao-Lu Liu, Qiang Guo, Jing-Ti Han. Funding acquisition: Jian-Guo Liu ... , Qiang Guo, Jing-Ti Han. Investigation: Jian-Guo Liu, Xiao-Lu Liu. Methodology: Jian-Guo Liu, Xiao-Lu Liu, Qiang Guo, Jing-Ti Han. Project administration: Jian-Guo Liu, Qiang Guo, Jing-Ti Han

Quantifying the effect of investors’ attention on stock market

The investors’ attention has been extensively used to predict the stock market. Different from existing proxies of the investors’ attention, such as the Google trends, Baidu index (BI), we argue the collective attention from the stock trading platforms could reflect the investors’ attention more closely. By calculated the increments of the attention volume for each stock (IAVS...

Optimal teaching strategy in periodic impulsive knowledge dissemination system

Accurately describing the knowledge dissemination process is significant to enhance the performance of personalized education. In this study, considering the effect of periodic teaching activities on the learning process, we propose a periodic impulsive knowledge dissemination system to regenerate the knowledge dissemination process. Meanwhile, we put forward learning...

Coagulation–Fragmentation Model for Animal Group-Size Statistics

We study coagulation–fragmentation equations inspired by a simple model proposed in fisheries science to explain data for the size distribution of schools of pelagic fish. Although the equations lack detailed balance and admit no H-theorem, we are able to develop a rather complete description of equilibrium profiles and large-time behavior, based on recent developments in complex...

THEORETICAL INVESTIGATIONS INTO THE EFFECTS OF ELECTRIC FIELD ON HYDROXYLAMINE CATION

In order to study the effect of the electric field on the propellant in the process of hydroxylamine nitrate-based liquid propellants electric ignition, geometry and charge distribution of NH 3 OH + were optimized using density functional theory (DFT)/B3LYP at 6-311++G(d, p) basis set level under different external electric field. Vertical ionization potential, adiabatic...

Stability of similarity measurements for bipartite networks

610054, PR ChinaTao Zhou AuthorsSearch for Jian-Guo Liu in:Nature Research journals • PubMed • Google ScholarSearch for Lei Hou in:Nature Research journals • PubMed • Google ScholarSearch for Xue Pan ... authors declare no competing financial interests. Corresponding author Correspondence to Jian-Guo Liu. Supplementary information PDF files1.Supplementary Information Rights and permissions This

Identifying the Role of Common Interests in Online User Trust Formation

Despite enormous recent efforts in detecting the mechanism of the social relation formation in online social systems, the underlying rules between the common interests and social relations are still under dispute. Do online users befriend others who have similar tastes, or do their tastes become more similar after they become friends? In this paper, we investigate the correlation...

Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing

In this study, soil samples collected from different plain afforestation time (1 year, 4 years, 10 years, 15 years, and 20 years) in Miyun were characterized, including total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), available K (K

Combined administration of anisodamine and neostigmine rescued acute lethal crush syndrome through α7nAChR-dependent JAK2-STAT3 signaling

Previously we showed that Ani (anisodamine)/Neo (neostigmine) combination produced anti-shock effect via activating α7 nicotinic acetylcholine receptor (α7nAChR). In this study, we aim to investigate the therapeutic effect and underlying mechanisms of Ani/Neo combination in acute lethal crush syndrome (CS). In rat and rabbit CS models, Ani/Neo combination increased the 24 h...

Memory effect of the online user preference

The mechanism of the online user preference evolution is of great significance for understanding the online user behaviors and improving the quality of online services. Since users are allowed to rate on objects in many online systems, ratings can well reflect the users' preference. With two benchmark datasets from online systems, we uncover the memory effect in users' selecting...

Auto-Bäcklund transformation and new exact solutions of the (3+1)-dimensional KP equation with variable coefficients

The (3+1)-dimensional variable coefficient Kadomtsev-Petviashvilli equation describes the dynamics of solitons and nonlinear waves in plasmas and superfluids. Based on computerized symbolic computation and extended variable coefficient homogeneous balance method, several families of exact soliton-like solutions, rational solutions, and auto-Bäcklund transformation are presented...

Evolution Characteristics of the Network Core in the Facebook

Statistical properties of the static networks have been extensively studied. However, online social networks are evolving dynamically, understanding the evolving characteristics of the core is one of major concerns in online social networks. In this paper, we empirically investigate the evolving characteristics of the Facebook core. Firstly, we separate the Facebook-link(FL) and...

A Knowledge Generation Model via the Hypernetwork

The influence of the statistical properties of the network on the knowledge diffusion has been extensively studied. However, the structure evolution and the knowledge generation processes are always integrated simultaneously. By introducing the Cobb-Douglas production function and treating the knowledge growth as a cooperative production of knowledge, in this paper, we present...

The mitochondrial alternative oxidase pathway protects the photosynthetic apparatus against photodamage in Rumex K-1 leaves

Background It is known that excess reducing equivalents in the form of NADPH in chloroplasts can be transported via shuttle machineries, such as the malate-oxaloacetate (OAA) shuttle, into the mitochondria, where they are efficiently oxidised by the mitochondrial alternative oxidase (AOX) respiratory pathway. Therefore, it has been speculated that the AOX pathway may protect...

Finite difference schemes for incompressible flows in vorticity formulations

In this paper, we review some recent progress made in [4, 5, 6] on finite difference schemes for viscous incompressible flows using vorticity formulation. The main purpose of this series of papers [4, 5, 6] is to resurrect the idea of using local vorticity boundary condition for unsteady calculation. The emphasis is on simplicity of the methods. Three main issues will be...

Finite difference schemes for incompressible flows in vorticity formulations

In this paper, we review some recent progress made in [4, 5, 6] on finite difference schemes for viscous incompressible flows using vorticity formulation. The main purpose of this series of papers [4, 5, 6] is to resurrect the idea of using local vorticity boundary condition for unsteady calculation. The emphasis is on simplicity of the methods. Three main issues will be...

Protective effects of betaglucin on myocardial tissue during myocardial infarction in rats and dogs

the Science and Technology Development Foundation of Shanghai (No 07JC14065) for grant support. Author contribution Jian-guo LIU and Ding-feng SU designed research; Jiao QIAN, Jian-guo LIU, Ai-jun LIU

Effects of combination therapy with atenolol and amlodipine on blood pressure control and stroke prevention in stroke-prone spontaneously hypertensive rats

Aim:To test the effects of atenolol and amlodipine, either alone or in combination, on blood pressure, blood pressure variability (BPV), baroreflex sensitivity (BRS), and the prevalence of stroke in stroke-prone spontaneously hypertensive rats (SHR-SP).Methods:In the first set of the study, 24 8-month-old, female SHR-SP rats were randomly divided into 3 groups. Blood pressure...