Tingting Liu

Ningbo University

In terrorist attack simulations, existing methods do not describe individual differences, which means different individuals will not have different behaviors. To address this problem, we propose a framework to model people’s heterogeneous behaviors in terrorist attack. For pedestrian, we construct an emotional model that takes into account its pers...

Social networks have changed the way how people communicate with each other dramatically. The study on information dissemination in social networks has attracted considerable attention. Many evidences show that emotionsof netizens are likely to spread with information and the emotional contagion also affect information dissemination in social netwo...

Stroke often results in hemiparesis, impairing the patient's motor abilities and leading to upper extremity motor deficits that require long-term training and assessment. However, existing methods for assessing patients' motor function rely on clinical scales that require experienced physicians to guide patients through target tasks during the asse...

With population aging accelerating, people are currently facing a new challenge which is until now unexplored: elderly abuse. According to some statistics provided by World Health Organization, one in six elderlies, aged at least 60 years old, is a victim of physical offense by their relatives and caregivers. Elder people face many types of abuse....

It is challenging to evacuate people quickly and safely in large complex buildings in emergencies. With the rapid development of smart mobile devices, the research of augmented reality (AR) technology in emergency evacuation is gradually becoming a hot topic. Meanwhile, virtual agents have been widely used in numerous fields and have been proved to...

Intelligent Virtual Agents (IVAs) can provide users with a friendly experience and have a wide range of applications in the era of artificial intelligence. However, most of existing IVAs are designed for personal computers. Design and user studies of IVAs on smartphones are uncommon. Therefore, developing IVAs for smartphones is an interesting topi...

Voice and face information are two most important perceptual modalities for human. In recent years, many researchers show great interest in learning cross-modal representations for different face-voice association tasks. However, these existing methods focus on the various biological attributions but rarely take emotion semantics between voice and...

In most of fire evacuation, people follow the walls. The reasons behind this escape behavior have not been verified by experiments. In this article, we design a virtual reality (VR) fire evacuation game with realistic virtual environment to explore the effects of smoke concentration, individual familiarity with the environment, and neighbor behavio...

When an earthquake occurs, indoor objects oscillate and fall, creating a hazardous evacuation environment. However, physical effects of oscillating and falling indoor objects during earthquakes are often ignored in the existing crowd emergency evacuation simulation studies. As a result, existing models will produce predictions that differ from the...

During an earthquake, interior nonstructural components of a building will be damaged. The damaged objects will obstruct pedestrians' evacuation routes and increase casualties. But this issue has received scant attention in evacuation simulation research. This paper focuses on this issue and proposes an indoor seismic evacuation model to simulate c...

Since the differences of individual pedestrians and the diversity of pedestrian‐vehicle avoidance behaviors in real life, it is important to consider the behavioral heterogeneity of pedestrians and vehicles in simulation. Most existing simulation models cannot generate personalized pedestrian‐vehicle avoidance scenarios. Taking personality and emot...

Cross-modal audiovisual generation is an emerging topic in machine learning. In particular, voice-to-face is one of the most popular research branches, which aims to generate faces from human voice clips. Most recent works in voice-to-face generation do not take emotion information into account. However, it could be widely observed that expressions...

In emergency situation, mass panic often causes more causalities than the disaster itself. The crowd emotional model could be used to simulate how crowd behavior in emergency scenarios and be helpful for developing crowd evacuation plans in emergency situations. However, existing crowd emotional models usually set model parameters in an empirical m...

The simulation of a crowd evacuating public buildings can be an important reference in planning the layout of buildings and formulating evacuation strategies. This paper proposes an agent-based crowd model; a crowd evacuation navigation simulation model is proposed for the multi-obstacle environment. We introduce the concept of navigation factor to...

In recent years, the number of children with autism has risen sharply. It brings tremendous pain to their family. However, in many developing countries, for those autistic children, the number of rehabilitation agencies is rare, the training method is monotonous, and the rehabilitation cost is very high. Therefore, it has important practical signif...

Due to the serious situation of the public security in China, it has important practical meaning to make contingency plans for emergencies in advance. During the emergency evacuation, crowd will be in a non-rational state. The characteristics of the crowd aggregation are different from the usual crowd movements and easily lead to emotional contagio...

Aimed at the Chinese aging population, companion robots with entertainment and communication functions are popular and useful for the daily life of the elderly. To make robots more reliable and socially acceptable in real scenarios, a better affective interaction with intelligent emotions and adaptive behaviors of companion robots is needed. Throug...

As the number of emergencies continues to increase, technologies about crowd evacuation simulation in emergencies have attracted widespread attention. Virtual simulation technology can deduce the behavior of the crowd in emergencies and can be an intuitive tool for defining contingency plans. In emergencies, the crowd will be in a state of panic. T...

In order to realize the collision effect between fluid and cloth, a fast sampling method for cloth boundary is proposed. Firstly, the edges and interior of the cloth triangle are analyzed and sampled during the pretreatment process. Then the forces of sampling particles and fluid particles are calculated, and the forces of the sampled particles are...

With the increasing number of emergencies, the crowd simulation technology has attracted wide attention in the recent years. Existing emergencies have shown that individuals are easy to be influenced by others' emotion during the evacuation. This will make it easier for people to aggregate together and increase security risks. Some of the existing...

Simulation of behaviors in emergencies is an interesting subject that helps to understand evacuation processes and to give out warnings for contingency plans. Individual and crowd behaviors in the earthquake are different from those under normal circumstances. Panic will spread in the crowd and cause chaos. Without considering emotion, most existin...

The child safety education is a very urgent task in China. It is necessary to teach children to recognize unsafe factors and learn how to escape from a dangerous situation. According to the psychological characteristics of children and constructivist learning theory, 3D serious game is an effective tool to assist child safety education in primary a...

A novel hybrid region-based active contour model is presented to segment medical images with intensity inhomogeneity. The energy functional for the proposed model consists of three weighted terms: global term, local term, and regularization term. The total energy is incorporated into a level set formulation with a level set regularization term, fro...

In this paper, we propose novel hybrid edge and region based active contour models. First, we consider geodesic curve and region-based model, and evolve contours based on global information to segment images with intensity homogeneity. Second, we extend the global model to the local intensity fitting energy for segmenting the images with intensity...

Microcalcifications in mammograms can be considered as early signs of breast cancer. A new fast fractal image coding method for the detection of microcalcifications in the ROIs of mammograms is proposed in this paper. Sankar improved the conventional fractal image coding method, but not thoroughly enough. It is modified in the proposed method that...