Development of agricultural machinery emission inventory of Beijing, Tianjin, and Hebei

In China, with the rapid advancement of agricultural practice, agriculture machineries have become an essential tool. The widely use of agriculture machineries also make them a significant source of air pollutants, including nitrogen oxides (NOx) and particulate matter (PM), because most agricultural machineries are not equipped with an emission treatment system and some are poorly […]

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A Security and Privacy Model for M-Services in Toy Computing

The research project aims to develop a systematic methodology to link safety policy in terms of security and privacy considerations to the realization of Bring Your Own Device (BYOD), which encourages users to use their own mobile devices, such as smart phones and tablet PCs, to access various services to support a workflow in a […]

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Investigating Social Network Models in Knowledge Building Teacher Communities

This proposed researched aims to examine online Knowledge Building Communities (KBC) for teacher professional development. KBC is a community, which is composed of a group of individuals working collaboratively to create collective knowledge rather than construction of a specific product or completion of a task. There is a commitment among the members of KBC to […]

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A case study on the influence of fuel quality on the concentration and chemical components of PM2.5 from vehicle emission

Recently, poor air quality due to fine particles (PM2.5) in large areas of China has gained much international attention, and vehicle emission is a significant source of PM2.5. Fuel quality is one of the influencing factors on vehicle emission. However, due to a large number of potential factors including fuel attributes, emission control devices, and […]

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Data Mining of Urban Mobility Pattern Using Taxi Trajectory Data

Urban mobility results from human movements from one region to another for interaction such as working, trading goods and other social events. Urban mobility has caused not only urban prosperity, but also some problems in the urban system, such as congestion, air pollution, energy consumption, public health and disease transmission. Therefore, understanding urban mobility is […]

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Computer Simulation of Geospatial Dynamics: How Do Cities Grow and Evolve?

Cities are the engines of creativity, wealth creation and economic growth in our society. Despite the increasing importance of cities in modern world, our ability to understand them scientifically and to manage them well in practice is limited. The greatest difficulties and challenges to any scientific approach to cities have resulted from their many interdependent […]

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Modéliser les données multi-relationnelles comme des séquences / Modeling multi-relational data as sequences

The objective of the project is to automatically learn missing information in knowledge bases (KBs), which are becoming essential tools to deal with big data, since they provide means to organize, manage and retrieve all this knowledge. These databases are huge directed multi-relational graphs, whose nodes correspond to entities connected by edges representing a certain […]

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optimization of Software Systems driven by the Wisdom of Crowds

The popularity of smartphones is leading to an ever growing number of mobile apps that are published in official app stores. However, users might experience failures and crashes for some apps installed on their devices. For developers, diagnosing failures that users experience is a major challenge, since the diversity of contextual conditions makes it difficult […]

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The luminescence of cavitation bubble generated by spark discharge in water

Cavitation bubble can be generated by ultrasound, laser or spark discharge underwater. It has good potential in the application of medical treatment, environmental treatment and surface cleaning. When the bubble collapse, the vapor inside will be compressed quickly and the temperature will rise to several thousand Kelvin, even reach ten of thousand Kelvin, and the […]

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Experimental and Computational Investigationson Catalytic Mechanism of Ethylene Polymerization over Ziegler-Natta Catalysts

Magnesium chloride (MgCI 2) is a commercial catalyst important for the production of polyolefin material. Although magnesium chloride has been used for over 50 years, the active site is still not entirely known. This research aims to learn more about the active site. The formation of defective magnesium chloride surfaces acts with Ziegler-Natta catalysts and […]

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