The feasibility of csem monitoring in gas hydrate production of the range of porosity and saturation

Natural gas hydrates production tests over the last two decades has sown that production is not without risks. Indirect effects in the sedimentary rocks of phase changes are changes in porosity, permeability, and saturation. From a field production test site, porosity changes in the range of 15% to 19% and saturation from 5% to 60% were...

Place Branding in Megacity Regions in China: coping with ambiguous national environmental policies

In the past four decades, China has experienced unprecedented rates of urban growth. This remarkable urbanization has also created challenges for China’s environment. To protect the environment, the Chinese national government has issued several policies while still maintaining high economic growth, such as Scientific Approach to Development in...

City branding in China's Northeastern region: How do cities reposition themselves when facing industrial decline and ecological modernization?

The past decade has seen a surge in the use of city branding, which is used to attract specific target groups of investors, high-tech green firms and talented workforce and reflects a desired shift from old, polluting manufacturing industries to new, clean service industries. Previous studies in the Chinese mega-city regions Pearl River Delta...

Economic City Branding in China: the Multi-Level Governance of Municipal Self-Promotion in the Greater Pearl River Delta

In the urban development policy in China, city brands play an important role in setting targets for Chinese cities. These economic city brands, however, are not produced in an institutional vacuum: they are embedded in the visions national, provincial and municipal governments have for these cities, i.e., on multi-level governance. In this paper...

H-Shaped Multiple Linear Motor Drive Platform Control System Design Based on an Inverse System Method

Due to its simple mechanical structure and high motion stability, the H-shaped platform has been increasingly widely used in precision measuring, numerical control machining and semiconductor packaging equipment, etc. The H-shaped platform is normally driven by multiple (three) permanent magnet synchronous linear motors. The main challenges for...

Cooperative Wideband OFDM Communication

In this thesis, major attention is paid to cooperative diversity as an alternative way to achieve spatial diversity when the multiple antenna structure is not an option. By adopting the cooperative relay nodes to forward information, we can mitigate the fading effects, increase the capacity, lower the bit-error rate, increase the achievable...

Cooperative Communication over Multi-Scale and Multi-Lag Wireless Channels

The development of wireless communication applications in the last few years is unprecedented. Wireless communication has evolved in various ways. The next generation of wireless systems should service more users while supporting mobility and high data rates. These requirements necessitate efficient use of available resources to provide...

Performance analysis of the cooperative ZP-OFDM: Diversity, capacity and complexity

In this paper, we investigate the diversity, capacity and complexity issues of cooperative Zero-Padding (ZP)-Orthogonal FrequencyDivisionMultiplexing (OFDM) communication. We consider cooperative ZP-OFDM communication over a multipath Rayleigh channel and with multiple Carrier Frequency Offsets (CFOs) existing at different relays. We use a...

OFDM Communications with Cooperative Relays

Signal fading due to multi-path propagation is one of the major impairments to meet the demands of next generation wireless networks for high data rate services. To mitigate the fading effects, time, frequency, and spatial diversity techniques or their hybrid can be used. Among different types of diversity techniques, spatial diversity is of...