In order to overcome the shortcomings that the reconstructed spectral reflectance may be negative when using the classic principal component analysis （PCA）to reduce the dimensions of the multi-spectral data, a nonne...In order to overcome the shortcomings that the reconstructed spectral reflectance may be negative when using the classic principal component analysis （PCA）to reduce the dimensions of the multi-spectral data, a nonnegative constrained principal component analysis method is proposed to construct a low-dimensional multi-spectral space and accomplish the conversion between the new constructed space and the multispectral space. First, the reason behind the negative data is analyzed and a nonnegative constraint is imposed on the classic PCA. Then a set of nonnegative linear independence weight vectors of principal components is obtained, by which a lowdimensional space is constructed. Finally, a nonlinear optimization technique is used to determine the projection vectors of the high-dimensional multi-spectral data in the constructed space. Experimental results show that the proposed method can keep the reconstructed spectral data in [ 0, 1 ]. The precision of the space created by the proposed method is equivalent to or even higher than that by the PCA.展开更多
＂The Sun Rising＂ is one of the most outstanding metaphysical poems of John Donne. After a general introduction about the metaphysical poetry and the author, this paper mainly aims to analyze the arresting and origin...＂The Sun Rising＂ is one of the most outstanding metaphysical poems of John Donne. After a general introduction about the metaphysical poetry and the author, this paper mainly aims to analyze the arresting and original conceits and images used in ＂The Sun Rising＂ and comment on their effect on expressing the author＇s feeling and reflecting his emotions.展开更多
A direct linear discriminant analysis algorithm based on economic singular value decomposition （DLDA/ESVD） is proposed to address the computationally complex problem of the conventional DLDA algorithm, which directl...A direct linear discriminant analysis algorithm based on economic singular value decomposition （DLDA/ESVD） is proposed to address the computationally complex problem of the conventional DLDA algorithm, which directly uses ESVD to reduce dimension and extract eigenvectors corresponding to nonzero eigenvalues. Then a DLDA algorithm based on column pivoting orthogonal triangular （QR） decomposition and ESVD （DLDA/QR-ESVD） is proposed to improve the performance of the DLDA/ESVD algorithm by processing a high-dimensional low rank matrix, which uses column pivoting QR decomposition to reduce dimension and ESVD to extract eigenvectors corresponding to nonzero eigenvalues. The experimental results on ORL, FERET and YALE face databases show that the proposed two algorithms can achieve almost the same performance and outperform the conventional DLDA algorithm in terms of computational complexity and training time. In addition, the experimental results on random data matrices show that the DLDA/QR-ESVD algorithm achieves better performance than the DLDA/ESVD algorithm by processing high-dimensional low rank matrices.展开更多
In order to realize spacecraft autonomy activity duration and complex temporal relations must be taken into consideration. In the space mission planning system, the traditional planners are unable to describe this kno...In order to realize spacecraft autonomy activity duration and complex temporal relations must be taken into consideration. In the space mission planning system, the traditional planners are unable to describe this knowledge, so an object-oriented temporal knowledge representation method is proposed to model every activity as an object to describe the activity's duration, start-time, end-time and the temporal relations with other activities. The layered planning agent architecture is then designed for spacecraft autonomous operation, and the functions of every component are given. A planning algorithm based on the temporal constraint satisfaction is built in detail using this knowledge representation and system architecture. The prototype of Deep Space Mission Autonomous Planning System is implemented. The results show that with the object-oriented temporal knowledge description method, the space mission planning system can be used to describe simultaneous activities, resource and temporal constraints, and produce a complete plan for exploration mission quickly under complex constraints.展开更多
According to Fromm, the life instinct constitutes the primary potentiality in man, while the death instinct a secondary potentiality, and which of the two prevails depending crucially on the living conditions that the...According to Fromm, the life instinct constitutes the primary potentiality in man, while the death instinct a secondary potentiality, and which of the two prevails depending crucially on the living conditions that the subject experiences during his or her childhood. Not limited to the individual level, Fromm＇s observation works on the collective level as well. Different environments foster different potentialities and lead to the formation of different cultures and ethics. A biophilic ethics treasures the value of love, peace, reciprocal altruism and unity of being, while a biophobic ethics is more addicted to hatred, violence, dualistic confrontation, and mutual destruction. Appling Fromm＇s theory to the interpretation of Charles Johnson＇s Middle Passage, readers can get a newly enlightened understanding of this award-winning masterpiece. Based on Fromm＇s hypothesis about human nature, this article analyzes the representation of the confrontations between the biophobic ethics and the biophilic ethics in this novel, the former being embodied by Captain Falcon＇s ＂syndrome of decay＂ which is also Johnson＇s critical metaphor of Western civilization, while the latter embodied by the Allmuseri culture＇s ＂syndrome of growth＂ which represents Johnson＇s idealistic imagination of the sum of non-Western civilization展开更多
During the course of the last years the need for the increase in the electric energy production in Brazil as well as in the rest of the world, has raised the tone of the debate about the environment impact of such pro...During the course of the last years the need for the increase in the electric energy production in Brazil as well as in the rest of the world, has raised the tone of the debate about the environment impact of such production. As a result of these debates, both the several levels of government and some of the NGOs （Non-Governmental Organizations） have commissioned innumerous opinion researches aiming at measuring and evaluating the knowledge and perception of the public in relation of the best non-polluting energy sources. Prior to 2001 these researches would not make any sense in Brazil., however due to that year＇s drought, the competent authorities were faced with the necessity of developing a plan, the PNE2030 （Piano Nacional de Energia） aiming, among others objectives, at finalizing the construction of the Angra three plants and implementing new nuclear plants in places still to be determined. Allowing for the complexity of the subject, this paper presents a field research conducted from September 28th, 2010 to October 28th, 2010 assessing the current level of perception of the Brazilian population about the nuclear area, in particular of the residents of three cities of Rio de Janeiro. As a result of this work, the authors suggest how the competent authorities should proceed to reach in an efficient manner a greater understanding of the population about the proposed subject, through communication campaigns being both informative and educational.展开更多
基金The Pre-Research Foundation of National Ministries andCommissions (No9140A16050109DZ01)the Scientific Research Program of the Education Department of Shanxi Province (No09JK701)
文摘In order to overcome the shortcomings that the reconstructed spectral reflectance may be negative when using the classic principal component analysis （PCA）to reduce the dimensions of the multi-spectral data, a nonnegative constrained principal component analysis method is proposed to construct a low-dimensional multi-spectral space and accomplish the conversion between the new constructed space and the multispectral space. First, the reason behind the negative data is analyzed and a nonnegative constraint is imposed on the classic PCA. Then a set of nonnegative linear independence weight vectors of principal components is obtained, by which a lowdimensional space is constructed. Finally, a nonlinear optimization technique is used to determine the projection vectors of the high-dimensional multi-spectral data in the constructed space. Experimental results show that the proposed method can keep the reconstructed spectral data in [ 0, 1 ]. The precision of the space created by the proposed method is equivalent to or even higher than that by the PCA.
文摘＂The Sun Rising＂ is one of the most outstanding metaphysical poems of John Donne. After a general introduction about the metaphysical poetry and the author, this paper mainly aims to analyze the arresting and original conceits and images used in ＂The Sun Rising＂ and comment on their effect on expressing the author＇s feeling and reflecting his emotions.
基金The National Natural Science Foundation of China (No.61374194)
文摘A direct linear discriminant analysis algorithm based on economic singular value decomposition （DLDA/ESVD） is proposed to address the computationally complex problem of the conventional DLDA algorithm, which directly uses ESVD to reduce dimension and extract eigenvectors corresponding to nonzero eigenvalues. Then a DLDA algorithm based on column pivoting orthogonal triangular （QR） decomposition and ESVD （DLDA/QR-ESVD） is proposed to improve the performance of the DLDA/ESVD algorithm by processing a high-dimensional low rank matrix, which uses column pivoting QR decomposition to reduce dimension and ESVD to extract eigenvectors corresponding to nonzero eigenvalues. The experimental results on ORL, FERET and YALE face databases show that the proposed two algorithms can achieve almost the same performance and outperform the conventional DLDA algorithm in terms of computational complexity and training time. In addition, the experimental results on random data matrices show that the DLDA/QR-ESVD algorithm achieves better performance than the DLDA/ESVD algorithm by processing high-dimensional low rank matrices.
文摘In order to realize spacecraft autonomy activity duration and complex temporal relations must be taken into consideration. In the space mission planning system, the traditional planners are unable to describe this knowledge, so an object-oriented temporal knowledge representation method is proposed to model every activity as an object to describe the activity's duration, start-time, end-time and the temporal relations with other activities. The layered planning agent architecture is then designed for spacecraft autonomous operation, and the functions of every component are given. A planning algorithm based on the temporal constraint satisfaction is built in detail using this knowledge representation and system architecture. The prototype of Deep Space Mission Autonomous Planning System is implemented. The results show that with the object-oriented temporal knowledge description method, the space mission planning system can be used to describe simultaneous activities, resource and temporal constraints, and produce a complete plan for exploration mission quickly under complex constraints.
基金Acknowledgement： This research is funded by the National Planning Office of Philosophy and Social Science of China （Reference 14CWW022）, and by the China Postdoctoral Science Foundation （Reference 2014M552063）.
文摘According to Fromm, the life instinct constitutes the primary potentiality in man, while the death instinct a secondary potentiality, and which of the two prevails depending crucially on the living conditions that the subject experiences during his or her childhood. Not limited to the individual level, Fromm＇s observation works on the collective level as well. Different environments foster different potentialities and lead to the formation of different cultures and ethics. A biophilic ethics treasures the value of love, peace, reciprocal altruism and unity of being, while a biophobic ethics is more addicted to hatred, violence, dualistic confrontation, and mutual destruction. Appling Fromm＇s theory to the interpretation of Charles Johnson＇s Middle Passage, readers can get a newly enlightened understanding of this award-winning masterpiece. Based on Fromm＇s hypothesis about human nature, this article analyzes the representation of the confrontations between the biophobic ethics and the biophilic ethics in this novel, the former being embodied by Captain Falcon＇s ＂syndrome of decay＂ which is also Johnson＇s critical metaphor of Western civilization, while the latter embodied by the Allmuseri culture＇s ＂syndrome of growth＂ which represents Johnson＇s idealistic imagination of the sum of non-Western civilization
文摘During the course of the last years the need for the increase in the electric energy production in Brazil as well as in the rest of the world, has raised the tone of the debate about the environment impact of such production. As a result of these debates, both the several levels of government and some of the NGOs （Non-Governmental Organizations） have commissioned innumerous opinion researches aiming at measuring and evaluating the knowledge and perception of the public in relation of the best non-polluting energy sources. Prior to 2001 these researches would not make any sense in Brazil., however due to that year＇s drought, the competent authorities were faced with the necessity of developing a plan, the PNE2030 （Piano Nacional de Energia） aiming, among others objectives, at finalizing the construction of the Angra three plants and implementing new nuclear plants in places still to be determined. Allowing for the complexity of the subject, this paper presents a field research conducted from September 28th, 2010 to October 28th, 2010 assessing the current level of perception of the Brazilian population about the nuclear area, in particular of the residents of three cities of Rio de Janeiro. As a result of this work, the authors suggest how the competent authorities should proceed to reach in an efficient manner a greater understanding of the population about the proposed subject, through communication campaigns being both informative and educational.
