2012 IEEE 11th International Conference on Signal Processing, 2012
ABSTRACT In this paper, three speech corpora were established, three nonlinear features based on ... more ABSTRACT In this paper, three speech corpora were established, three nonlinear features based on Teager Energy Operator and two linear features for emotion recognition were researched. HMM-based emotion recognition was used to evaluate the emotional recognition performance of features based on Teager energy operator. The results show that performance of two features, i.e. NFD_Mel (Nonlinear Frequency Domain based Mel-scale coefficients), AF_Mel (Amplitude-Frequency property of TEO based Mel-scale coefficients), are optimal in all the researched features. It could be therefore said that transformation of Teager Energy Operator in frequency domain, and application of amplitude-frequency property of Teager Energy Operator provide good representations of emotion styles in three speech corpora for emotion recognition.
Journal of Shanghai University (English Edition), 2011
Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems. When d... more Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps (D-3DV) for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality.
2011 3DTV Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON), 2011
Multi-view depth estimation is an important part in the virtual view synthesis and depth map codi... more Multi-view depth estimation is an important part in the virtual view synthesis and depth map coding within the 3DV/FTV applications. However, existing depth estimation methods generally have difficulty to generate good depth results around object edges or in areas with less texture. To solve this problem, we propose an improved algorithm to obtain a smooth and accurate depth map for view synthesis in D video coding. The proposed method aims to preserve details in the depth map and simultaneously smooth depths in object boundary occluded area, less texture and discontinuity regions, to avoid blurring in the synthesized views. Experimental results show a significant improvement of the initial input depth maps and coding efficiency, as well as a reduction of view synthesis artifacts.
ABSTRACT Aeolian sediments are widely distributed in the eastern Qaidam Basin (QB), the main habi... more ABSTRACT Aeolian sediments are widely distributed in the eastern Qaidam Basin (QB), the main habitats for human in the hyper-arid basin during the Holocene, especially since 3 ka. The evolution of aeolian sediments is an important factor for the environmental change, and influence human activities and migration. However, many questions, e.g., what controls their initiation and how their evolution responds to climate change and human activities, still need further studies. In this study, we present a detailed Optically Stimulated Luminescence (OSL) chronology for both aeolian and underlying fluvial sediments from the Tiekui Desert in the eastern QB to discuss aeolian and fluvial processes, climatic changes, desert evolution, and human activities. Dating results show that (1) underlying fluvial sediments were formed during ~23.9-12.1 ka, and the erosion caused by the fluvial process may provide an explanation for the absence of aeolian sediments during and before this period; (2) aeolian sediments accumulated from ca. 9-8 ka to modern times, with loess development from 9 to 8 ka to 1.6 ka and 1.4-0.7 ka, and dune sand accumulation at 1.6-1.4 ka and 0.7-0 ka. Through the comparison with the local and global palaeoclimatic records, we suggest that desert evolution in this region was sensitive to climatic changes induced by the Asian summer monsoon. Detailed local historical records of the past 2000 years suggest that desert evolution was also influenced by human activities.
The mechanisms of salt tolerance in plants were reviewed focusing on root characteristics of salt... more The mechanisms of salt tolerance in plants were reviewed focusing on root characteristics of salt-tolerant cultivars under saline conditions. The salt-tolerant traits were characterized as greater root growth, higher efficiency in water uptake, lower Na+ permeability, better root osmotic adjustment, and higher root pressure. The roles of these characteristics in plant growth and crop production under saline conditions were discussed.
... For example, Purcell and King (1996) found that nitrogen supply to soybean enhanced its ... H... more ... For example, Purcell and King (1996) found that nitrogen supply to soybean enhanced its ... However, these data are insufficient to clarify completely the mechanism of improvement in ... effect of silicon on sorghum, information regarding drought tolerance and water uptake ability is ...
Although the VEGF-Flk-1-pathway has been known as the major driving force of angiogenesis, new ev... more Although the VEGF-Flk-1-pathway has been known as the major driving force of angiogenesis, new evidence has shown that VEGFR-1/Flt-1 plays important roles during the neovascularization under pathological conditions including tumor, atherosclerosis and arthritis. In search of Flt-1 receptor antagonizing peptides, we screened a phage display 12-mer-peptide library with recombinant Flt-1 protein. Seven candidate peptides were identified that specifically bound to VEGF receptor Flt-1, of which peptide F56 (WHSDMEWWYLLG) almost abolished VEGF binding to receptor Flt-1 in vitro. In vivo, F56 fused with DHFR (DHFR-F56) inhibited angiogenesis in a CAM assay. Moreover, DHFR-F56 significantly inhibited the growth of nodules of human gastric cancer cell line MGC-803 in BALB/c nude mice. Histological analyses showed that necrosis of the implanted tumor was markedly enhanced following treatment with DHFR-F56. In the severe combined immunodeficiency disease (SCID) mouse model for studying metastasis of the human breast cancer cell line BICR-H1, synthetic peptide F56 significantly inhibited tumor growth and lung metastases. Taken together, our results have demonstrated that peptide F56, as a Flt-1 receptor antagonist, fulfilled the antiangiogenic and antimetastatic effects by specifically interfering with the interaction between VEGF and receptor Flt-1. Thus, short peptide F56 may have clinical potential in tumor therapy.
The compilation of previous genomewide association studies of AIDS shows a major polymorphism in ... more The compilation of previous genomewide association studies of AIDS shows a major polymorphism in the HCP5 gene associated with both control of the viral load and long-term nonprogression (LTNP) to AIDS.
It is well recognized that multiple genes are likely contributing to the susceptibility of most c... more It is well recognized that multiple genes are likely contributing to the susceptibility of most common complex diseases. Studying one gene at a time might reduce our chance to identify disease susceptibility genes with relatively small effect sizes. Therefore, it is crucial to develop statistical methods that can assess the effect of multiple genes collectively. Motivated by the increasingly available high-density markers across the whole human genome, we propose a class of TDT-type methods that can jointly analyze haplotypes from multiple candidate genes (linked or unlinked). Our approach first uses a linear signed rank statistic to compare at an individual gene level the structural similarity among transmitted haplotypes against that among non-transmitted haplotypes. The results of the ranked comparisons from all considered genes are subsequently combined into global statistics, which can simultaneously test the association of the set of genes with the disease. Using simulation studies, we find that the proposed tests yield correct type I error rates in stratified populations. Compared with the gene-by-gene test, the new global tests appear to be more powerful in situations where all candidate genes are associated with the disease.
An, P., Li, X., Zheng, Y., Eneji, A. E. and Inanaga, S. 2014. Calcium effects on root cell wall c... more An, P., Li, X., Zheng, Y., Eneji, A. E. and Inanaga, S. 2014. Calcium effects on root cell wall composition and ion contents in two soybean cultivars under salinity stress. Can. J. Plant Sci. 94: 733–740. It has been widely suggested that calcium (Ca) application ameliorates salt stress, but characteristic changes in root cell wall due to Ca application under saline conditions are poorly documented. Our objectives were: (1) to determine the effect of Ca on root cell wall composition, using two soybean cultivars differing in sensitivity to salt stress and (2) to understand the relationship between the internal effects of sodium–calcium interaction on the root cell wall. Uniform seedlings were transplanted into mixed solutions of NaCl (0, 40 mM,) and CaCl2 (0, 0.5, 2 mM). Root lengths were measured after an exposure of 14, 24 and 40 h to the treatments and cell wall analysis performed for total sugars, uronic acid and ion contents. Without salinity stress, Ca application caused no sig...
2012 IEEE 11th International Conference on Signal Processing, 2012
ABSTRACT In this paper, three speech corpora were established, three nonlinear features based on ... more ABSTRACT In this paper, three speech corpora were established, three nonlinear features based on Teager Energy Operator and two linear features for emotion recognition were researched. HMM-based emotion recognition was used to evaluate the emotional recognition performance of features based on Teager energy operator. The results show that performance of two features, i.e. NFD_Mel (Nonlinear Frequency Domain based Mel-scale coefficients), AF_Mel (Amplitude-Frequency property of TEO based Mel-scale coefficients), are optimal in all the researched features. It could be therefore said that transformation of Teager Energy Operator in frequency domain, and application of amplitude-frequency property of Teager Energy Operator provide good representations of emotion styles in three speech corpora for emotion recognition.
Journal of Shanghai University (English Edition), 2011
Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems. When d... more Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps (D-3DV) for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality.
2011 3DTV Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON), 2011
Multi-view depth estimation is an important part in the virtual view synthesis and depth map codi... more Multi-view depth estimation is an important part in the virtual view synthesis and depth map coding within the 3DV/FTV applications. However, existing depth estimation methods generally have difficulty to generate good depth results around object edges or in areas with less texture. To solve this problem, we propose an improved algorithm to obtain a smooth and accurate depth map for view synthesis in D video coding. The proposed method aims to preserve details in the depth map and simultaneously smooth depths in object boundary occluded area, less texture and discontinuity regions, to avoid blurring in the synthesized views. Experimental results show a significant improvement of the initial input depth maps and coding efficiency, as well as a reduction of view synthesis artifacts.
ABSTRACT Aeolian sediments are widely distributed in the eastern Qaidam Basin (QB), the main habi... more ABSTRACT Aeolian sediments are widely distributed in the eastern Qaidam Basin (QB), the main habitats for human in the hyper-arid basin during the Holocene, especially since 3 ka. The evolution of aeolian sediments is an important factor for the environmental change, and influence human activities and migration. However, many questions, e.g., what controls their initiation and how their evolution responds to climate change and human activities, still need further studies. In this study, we present a detailed Optically Stimulated Luminescence (OSL) chronology for both aeolian and underlying fluvial sediments from the Tiekui Desert in the eastern QB to discuss aeolian and fluvial processes, climatic changes, desert evolution, and human activities. Dating results show that (1) underlying fluvial sediments were formed during ~23.9-12.1 ka, and the erosion caused by the fluvial process may provide an explanation for the absence of aeolian sediments during and before this period; (2) aeolian sediments accumulated from ca. 9-8 ka to modern times, with loess development from 9 to 8 ka to 1.6 ka and 1.4-0.7 ka, and dune sand accumulation at 1.6-1.4 ka and 0.7-0 ka. Through the comparison with the local and global palaeoclimatic records, we suggest that desert evolution in this region was sensitive to climatic changes induced by the Asian summer monsoon. Detailed local historical records of the past 2000 years suggest that desert evolution was also influenced by human activities.
The mechanisms of salt tolerance in plants were reviewed focusing on root characteristics of salt... more The mechanisms of salt tolerance in plants were reviewed focusing on root characteristics of salt-tolerant cultivars under saline conditions. The salt-tolerant traits were characterized as greater root growth, higher efficiency in water uptake, lower Na+ permeability, better root osmotic adjustment, and higher root pressure. The roles of these characteristics in plant growth and crop production under saline conditions were discussed.
... For example, Purcell and King (1996) found that nitrogen supply to soybean enhanced its ... H... more ... For example, Purcell and King (1996) found that nitrogen supply to soybean enhanced its ... However, these data are insufficient to clarify completely the mechanism of improvement in ... effect of silicon on sorghum, information regarding drought tolerance and water uptake ability is ...
Although the VEGF-Flk-1-pathway has been known as the major driving force of angiogenesis, new ev... more Although the VEGF-Flk-1-pathway has been known as the major driving force of angiogenesis, new evidence has shown that VEGFR-1/Flt-1 plays important roles during the neovascularization under pathological conditions including tumor, atherosclerosis and arthritis. In search of Flt-1 receptor antagonizing peptides, we screened a phage display 12-mer-peptide library with recombinant Flt-1 protein. Seven candidate peptides were identified that specifically bound to VEGF receptor Flt-1, of which peptide F56 (WHSDMEWWYLLG) almost abolished VEGF binding to receptor Flt-1 in vitro. In vivo, F56 fused with DHFR (DHFR-F56) inhibited angiogenesis in a CAM assay. Moreover, DHFR-F56 significantly inhibited the growth of nodules of human gastric cancer cell line MGC-803 in BALB/c nude mice. Histological analyses showed that necrosis of the implanted tumor was markedly enhanced following treatment with DHFR-F56. In the severe combined immunodeficiency disease (SCID) mouse model for studying metastasis of the human breast cancer cell line BICR-H1, synthetic peptide F56 significantly inhibited tumor growth and lung metastases. Taken together, our results have demonstrated that peptide F56, as a Flt-1 receptor antagonist, fulfilled the antiangiogenic and antimetastatic effects by specifically interfering with the interaction between VEGF and receptor Flt-1. Thus, short peptide F56 may have clinical potential in tumor therapy.
The compilation of previous genomewide association studies of AIDS shows a major polymorphism in ... more The compilation of previous genomewide association studies of AIDS shows a major polymorphism in the HCP5 gene associated with both control of the viral load and long-term nonprogression (LTNP) to AIDS.
It is well recognized that multiple genes are likely contributing to the susceptibility of most c... more It is well recognized that multiple genes are likely contributing to the susceptibility of most common complex diseases. Studying one gene at a time might reduce our chance to identify disease susceptibility genes with relatively small effect sizes. Therefore, it is crucial to develop statistical methods that can assess the effect of multiple genes collectively. Motivated by the increasingly available high-density markers across the whole human genome, we propose a class of TDT-type methods that can jointly analyze haplotypes from multiple candidate genes (linked or unlinked). Our approach first uses a linear signed rank statistic to compare at an individual gene level the structural similarity among transmitted haplotypes against that among non-transmitted haplotypes. The results of the ranked comparisons from all considered genes are subsequently combined into global statistics, which can simultaneously test the association of the set of genes with the disease. Using simulation studies, we find that the proposed tests yield correct type I error rates in stratified populations. Compared with the gene-by-gene test, the new global tests appear to be more powerful in situations where all candidate genes are associated with the disease.
An, P., Li, X., Zheng, Y., Eneji, A. E. and Inanaga, S. 2014. Calcium effects on root cell wall c... more An, P., Li, X., Zheng, Y., Eneji, A. E. and Inanaga, S. 2014. Calcium effects on root cell wall composition and ion contents in two soybean cultivars under salinity stress. Can. J. Plant Sci. 94: 733–740. It has been widely suggested that calcium (Ca) application ameliorates salt stress, but characteristic changes in root cell wall due to Ca application under saline conditions are poorly documented. Our objectives were: (1) to determine the effect of Ca on root cell wall composition, using two soybean cultivars differing in sensitivity to salt stress and (2) to understand the relationship between the internal effects of sodium–calcium interaction on the root cell wall. Uniform seedlings were transplanted into mixed solutions of NaCl (0, 40 mM,) and CaCl2 (0, 0.5, 2 mM). Root lengths were measured after an exposure of 14, 24 and 40 h to the treatments and cell wall analysis performed for total sugars, uronic acid and ion contents. Without salinity stress, Ca application caused no sig...
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