In order to resolve the conflict between the limited resources of embedded devices and the growing amount of massive image data to be shown, a solution for fast images rendering in embedded devices is proposed and imp...In order to resolve the conflict between the limited resources of embedded devices and the growing amount of massive image data to be shown, a solution for fast images rendering in embedded devices is proposed and implemented. First, an improved algorithm of a multi-resolution file-pyramid construction which is used for the organization of massive image data is presented. Then, a strategy, adopting technologies such as view-dependent levels of detail, target-tiles quick search and tiles seamless connection, is presented for fast scheduling and viewing of images. The results show that compared with the solution of multi-scale image representations based on wavelet, the proposed solution can improve the rendering speed, and the rendering speed does not depend on the image size, though it increases some data storage space. And the proposed solution is suitable for embedded devices and friendly experience.展开更多
This paper conceptualizes a framework for bridging the BIM （building information modelling）-specifications divide through augmenting objects within BIM with specification parameters derived from a product library. W...This paper conceptualizes a framework for bridging the BIM （building information modelling）-specifications divide through augmenting objects within BIM with specification parameters derived from a product library. We demonstrate how model information, enriched with data at various LODs （levels of development）, can evolve simultaneously with design and construction using different representation of a window object embedded in a wall as lifeeyele phase exemplars at different levels of granularity. The conceptual standpoint is informed by the need for exploring a methodological approach which extends beyond current limitations of current modelling platforms in enhancing the information content of BIM models. Therefore, this work demonstrates that BIM objects can be augmented with construction specification parameters leveraging product libraries.展开更多
This paper looks at the professional and ethical failure of news organizations in reporting wars, conflicts, and crises Principles of press freedom, objectivity, and impartiality are not respected, and the journalism ...This paper looks at the professional and ethical failure of news organizations in reporting wars, conflicts, and crises Principles of press freedom, objectivity, and impartiality are not respected, and the journalism practice is different in times of war from in normal times. Very often, the news organization sides with the position of its country, and the journalist becomes ＂nationalistic＂ and ＂patriotic＂ and sides with his/her country＇s position towards the war at the expense of impartiality, objectivity, fairness, and ethics of journalism practices. Very often, the news media are used by the military and the political forces to frame wars and conflicts along the lines of the ＂national security＂ and ＂national interests＂. The second Gulf War, 9/11 events in 2001, the Afghan War, and the third Gulf War are used as case studies to assess the different kinds of mechanisms, techniques,＇and ＂rituals＂ practiced by the media to cover and report wars and conflicts to their audiences and world opinion. Results of the study suggest that an alternative theory--＂government press coalition theory＂——should be developed to explain journalism practices and behaviors during wars and conflicts.展开更多
This paper deals with the statistical modeling of latent topic hierarchies in text corpora. The height of the topic tree is assumed as fixed, while the number of topics on each level as unknown a priori and to be infe...This paper deals with the statistical modeling of latent topic hierarchies in text corpora. The height of the topic tree is assumed as fixed, while the number of topics on each level as unknown a priori and to be inferred from data. Taking a nonpara-metric Bayesian approach to this problem, we propose a new probabilistic generative model based on the nested hierarchical Dirichlet process (nHDP) and present a Markov chain Monte Carlo sampling algorithm for the inference of the topic tree structure as well as the word distribution of each topic and topic distribution of each document. Our theoretical analysis and experiment results show that this model can produce a more compact hierarchical topic structure and captures more fine-grained topic rela-tionships compared to the hierarchical latent Dirichlet allocation model.展开更多
基金The National Public Benefit Research Foundation of China (No. 201111013-02)
文摘In order to resolve the conflict between the limited resources of embedded devices and the growing amount of massive image data to be shown, a solution for fast images rendering in embedded devices is proposed and implemented. First, an improved algorithm of a multi-resolution file-pyramid construction which is used for the organization of massive image data is presented. Then, a strategy, adopting technologies such as view-dependent levels of detail, target-tiles quick search and tiles seamless connection, is presented for fast scheduling and viewing of images. The results show that compared with the solution of multi-scale image representations based on wavelet, the proposed solution can improve the rendering speed, and the rendering speed does not depend on the image size, though it increases some data storage space. And the proposed solution is suitable for embedded devices and friendly experience.
文摘This paper conceptualizes a framework for bridging the BIM （building information modelling）-specifications divide through augmenting objects within BIM with specification parameters derived from a product library. We demonstrate how model information, enriched with data at various LODs （levels of development）, can evolve simultaneously with design and construction using different representation of a window object embedded in a wall as lifeeyele phase exemplars at different levels of granularity. The conceptual standpoint is informed by the need for exploring a methodological approach which extends beyond current limitations of current modelling platforms in enhancing the information content of BIM models. Therefore, this work demonstrates that BIM objects can be augmented with construction specification parameters leveraging product libraries.
文摘This paper looks at the professional and ethical failure of news organizations in reporting wars, conflicts, and crises Principles of press freedom, objectivity, and impartiality are not respected, and the journalism practice is different in times of war from in normal times. Very often, the news organization sides with the position of its country, and the journalist becomes ＂nationalistic＂ and ＂patriotic＂ and sides with his/her country＇s position towards the war at the expense of impartiality, objectivity, fairness, and ethics of journalism practices. Very often, the news media are used by the military and the political forces to frame wars and conflicts along the lines of the ＂national security＂ and ＂national interests＂. The second Gulf War, 9/11 events in 2001, the Afghan War, and the third Gulf War are used as case studies to assess the different kinds of mechanisms, techniques,＇and ＂rituals＂ practiced by the media to cover and report wars and conflicts to their audiences and world opinion. Results of the study suggest that an alternative theory--＂government press coalition theory＂——should be developed to explain journalism practices and behaviors during wars and conflicts.
基金Project (No. 60773180) supported by the National Natural Science Foundation of China
文摘This paper deals with the statistical modeling of latent topic hierarchies in text corpora. The height of the topic tree is assumed as fixed, while the number of topics on each level as unknown a priori and to be inferred from data. Taking a nonpara-metric Bayesian approach to this problem, we propose a new probabilistic generative model based on the nested hierarchical Dirichlet process (nHDP) and present a Markov chain Monte Carlo sampling algorithm for the inference of the topic tree structure as well as the word distribution of each topic and topic distribution of each document. Our theoretical analysis and experiment results show that this model can produce a more compact hierarchical topic structure and captures more fine-grained topic rela-tionships compared to the hierarchical latent Dirichlet allocation model.
