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The accounting of embodied energy in China's international trade has attracted a lot of attention in recent years. But how to reduce China's embodied export scale within the bearable costs requires in- depth analysis. This research analyse how to decrease the net export of embodied energy while keeping the least loss of China's GDP and unemployment rate by optimizing the embodied energy export-import structure though the combined input-output model and multi-objective programming model. According to the different constraints, designed two different scenarios. The unconstrained scenario optimization result shows that the export of embodied energy decreased by 19.99%. But at the same time resulting in 9.01% unemployment rate increase and 4.6% loss of China's GDP. By contrast, in reasonable constraint scenario, the export of embodied energy decreased by 4.41%, resulting in 4.19% unemployment rate increase and 0.47% loss of China's GDP. Therefore, under the current China's economic structure, it is difficult to fundamentally change the status of net exporter of embodied energy simply by changing the international import and export trade. [ABSTRACT FROM AUTHOR]

Routes of ships on voyage should be adjusted or replanned because of the influences of heavy weather or bad situation in local sea area. In this paper we present an optimal voyage planning approach based on a dynamic access network model. Firstly, a dynamic access route network is constructed by overlaying a static route network with some obstacle region polygons. The static route network is composed of all known ports and routes in a specific area. And the obstacle region polygons can be classified into 2 types: mobile region and static region. The former are shaped by extreme climate conditions, such as windstorm or hurricane, and the latter are shaped by marine topography limit and military control zones. Secondly, according to optimization degree in descending order, an optimal voyage planning approach was designed based on the dynamic access network, which includes accessibility analysis of planned route which is called voyage proceeding strategy and computation of a new shortest route which is called route rounding strategy and seeking of an optimum neighbor port which is called sheltering strategy. Corresponding algorithms were also expounded in detail and its feasibility and effectiveness were confirmed by an experiment with simulation scene and data. The optimal voyage planning strategies proposed in this paper will play a significant role in the field of voyage decision making and maritime rescue. [ABSTRACT FROM AUTHOR]

Associated with the construction of national level experimental teaching demonstration center and the practice of integrative experiment with the mode of opening in our university, the idea of integrating the integrative experiment with EDA and with MCU ( Micro Controller Unit), respectively, are discussed. The practical works are introduced. As a result, it is suitable for improving students ' practical ability and exploring spirit with favorable effect. [ABSTRACT FROM AUTHOR]

In order to understand the effect of exocarp removal on the seed germination and seedling growth of Ardisia violacea which was a rare and endangered plant, two treatments, peeled and unpeeled, were set up with four replicates to study the seed germination and growth traits of Ardisia violacea. The results showed that the emergence time of the unpeeled seeds of Ardisia violacea was delayed by 19 days, which was significantly later than that of the peeled seeds (P<0. 05) ; The seed emergence rate was 70. 3% - 75. 6 %, and there was no significant difference between the unpeeled and peeled seeds (P> 0. 05) ; The growth of Ardisia violacea seedlings showed an "S-shaped" curve of "slow-fast-slow". By the end of the growth, the plant height, ground diameter, leaf length and leaf width were respectively in the range of 5. 32 to 5. 34 cm, 0. 12 to 0. 13 cm, 4. 40 to 4. 96 cm, 2. 08 to 2. 12 cm, and the number of leaves ranged from 13. 4 to 14. 8, so there was no significant difference between the unpeeled and peeled treatments (P>-0. 05). In conclusion, the existence of pericarp had no significant effect on the germination and seedling growth of Ardisia violacea, and the seedlings could be directly sown. [ABSTRACT FROM AUTHOR]

Based on the five climatic factors such as monthly mean temperature, monthly mean maximum temperature, monthly average lowest temperature, the average monthly net radiation and the monthly mean precipitation in the breeding distribution area of the typical migratory species such as red-crowned crane in Northeast China from 1981 to 1990, this paper studied the characteristics analysis on the related climate data by using the theory and methods of interval statistics, hierarchical clustering based on normalization distance and clustering fusion technology. The results show that the most appropriate time in breeding habitat was May to September. The conclusion coincided with the biological characteristics and ecological characteristics of red-crowned crane in Northeast China. Extracting climatic factors from climate data was critical to the predictive distribution of species. The used climatic factors in the past mostly depended on the biological and ecological characteristics of species and the correlation analysis for climatic factors in the distribution area of species. Instead, this method only depended on climate data in the distribution area of the predictive species entirely, and it obtained data mining and data processing. This set of research methods possess generality and will provide basis for the research about the impact of future climate change on the predictive distribution of the migratory species in Northeast China. [ABSTRACT FROM AUTHOR]

The underwater targets recognition is the key to the dynamic perception of the environment, fast location and visual target tracking of autonomous underwater vehicle (AUV). To eliminate the negative effects, which are brought by the particularity and complexity of imaging environment, this paper presents a rapid and accurate target recognition system for AUV to use the obtained result for the next task. Firstly, an efficient contour segmentation algorithm is given by the integrated application of some popular algorithm. Secondly, affine transformation invariants which is constant to image translation, rotation and scaling are constructed through the analysis and modification of the contour moment. Lastly, the design idea of a modified FCM clustering recognition is discussed in detail. Experiments of underwater target recognition are made on four types of actual targets prove that the recognition system can be applied to underwater object detection and have the relatively high robustness and real-time effectiveness. [ABSTRACT FROM AUTHOR]