Let <i><span>n</span></i><span> respondents rank order </span><i><span>d</span></i><span> items, and suppose that <img src="Edit_c36450fa-1b61-...Let <i><span>n</span></i><span> respondents rank order </span><i><span>d</span></i><span> items, and suppose that <img src="Edit_c36450fa-1b61-4116-be40-5bede8274d30.bmp" alt="" /></span><span><span>. Our main task is to uncover and display the structure of the observed rank data by an exploratory riffle shuffling procedure which sequentially decomposes the n voters into a finite number of coherent groups plus a noisy group: where the noisy group represents the outlier voters and each coherent group is composed of a finite number of coherent clusters. We consider exploratory riffle shuffling of a set of items to be equivalent to optimal two blocks seriation of the items with crossing of some scores between the two blocks. A riffle shuffled coherent cluster of voters within its coherent group is essentially characterized by the following facts: 1) Voters have identical first TCA factor score, where TCA designates taxicab correspondence analysis, an L</span><sub><span>1</span></sub><span> variant of corresponden</span><span>ce analysis;2) Any preference is easily interpreted as riffle shuffling of its items;3) The nature of different riffle shuffling of items can be seen in the structure of the contingency table of the first-order marginals constructed from the Borda scorings of the voters;4) The first TCA factor scores of the items of a coherent cluster are interpreted as Borda scale of the items. We also introduce a crossing index, which measures the extent of crossing of scores of voters between the two blocks seriation of the items. The novel approach is explained on the benchmarking SUSHI data set, where we show that this data set has a very si</span><span>mple structure, which can also be communicated in a tabular form.</span></span>展开更多
This paper proposes an alternative scheme for generating cluster-type of entangled coherent states. This scheme is based on resonant interaction of a two-mode cavity with a two-level atom driven by strong classical fi...This paper proposes an alternative scheme for generating cluster-type of entangled coherent states. This scheme is based on resonant interaction of a two-mode cavity with a two-level atom driven by strong classical fields. Thus the required interaction time is greatly shortened, which is very important in view of decoherence.展开更多
We propose schemes to generate an n-coherent-pulse GHZ state and a cluster state via the interaction between n coherent pulses and a two-sided cavity. In these schemes, a strong coupling condition is not needed, which...We propose schemes to generate an n-coherent-pulse GHZ state and a cluster state via the interaction between n coherent pulses and a two-sided cavity. In these schemes, a strong coupling condition is not needed, which makes the protocols possibly able to be implemented based on the current experiment technology.展开更多
To sharpen the imaging of structures, it is vital to develop a convenient and efficient quantitative algorithm of the optical coherence tomography (OCT) sampling. In this paper a new Monte Carlo model is set up and ho...To sharpen the imaging of structures, it is vital to develop a convenient and efficient quantitative algorithm of the optical coherence tomography (OCT) sampling. In this paper a new Monte Carlo model is set up and how light propagates in bio-tissue is analyzed in virtue of mathematics and physics equations. The relations,in which light intensity of Class 1 and Class 2 light with different wavelengths changes with their permeation depth,and in which Class 1 light intensity (signal light intensity) changes with the probing depth, and in which angularly resolved diffuse reflectance and diffuse transmittance change with the exiting angle, are studied. The results show that Monte Carlo simulation results are consistent with the theory data.展开更多
The potential importance of psychological aspects in relation to risk factors for fractures and preventing unhealth behaviour has rarely been investigated in the field of osteoporosis. This study explores some psychol...The potential importance of psychological aspects in relation to risk factors for fractures and preventing unhealth behaviour has rarely been investigated in the field of osteoporosis. This study explores some psychological aspects and health behaviour of people detected to have osteoporosis at the time of a forearm fracture. Moreover, it aims at revealing subgroups within this population with clinical relevance for managing secondary prevention actions. Data collection was based on questionnaires and physical tests. Eighty-five individual were analysed. The results confirm earlier research on a similar population having relatively good self-reported health behaviour. The individuals reported high quality of life, high amount of physical activity and low alcohol intake. A majority reported good osteoporosis knowledge, a high sense of coherence (mean = 74) and high activity-specific balance confidence (mean = 81). Furthermore, hierarchical cluster analysis indicated a typology of two subgroups where 75% matched a health-resilient group while 25% matched a health-vulnerable group. The vulnerable group had a significantly lower sense of coherence SOC (p = 0.02) and activity-specific balance confidence, ABC (p = 0.001). This pattern was confirmed from behavioural aspects but only regarding one traditional risk factor namely the history of fractures. The health-vulnerable group achieved a significantly weaker physical profile, less reported time spent outdoors and lower quality of life. The differences found between the subgroups indicate that this typology, as a complement to models based upon relative risk like FRAX, can be relevant for widening perspectives in future research and clinical practice of fracture prevention in osteoporosis.展开更多
文摘Let <i><span>n</span></i><span> respondents rank order </span><i><span>d</span></i><span> items, and suppose that <img src="Edit_c36450fa-1b61-4116-be40-5bede8274d30.bmp" alt="" /></span><span><span>. Our main task is to uncover and display the structure of the observed rank data by an exploratory riffle shuffling procedure which sequentially decomposes the n voters into a finite number of coherent groups plus a noisy group: where the noisy group represents the outlier voters and each coherent group is composed of a finite number of coherent clusters. We consider exploratory riffle shuffling of a set of items to be equivalent to optimal two blocks seriation of the items with crossing of some scores between the two blocks. A riffle shuffled coherent cluster of voters within its coherent group is essentially characterized by the following facts: 1) Voters have identical first TCA factor score, where TCA designates taxicab correspondence analysis, an L</span><sub><span>1</span></sub><span> variant of corresponden</span><span>ce analysis;2) Any preference is easily interpreted as riffle shuffling of its items;3) The nature of different riffle shuffling of items can be seen in the structure of the contingency table of the first-order marginals constructed from the Borda scorings of the voters;4) The first TCA factor scores of the items of a coherent cluster are interpreted as Borda scale of the items. We also introduce a crossing index, which measures the extent of crossing of scores of voters between the two blocks seriation of the items. The novel approach is explained on the benchmarking SUSHI data set, where we show that this data set has a very si</span><span>mple structure, which can also be communicated in a tabular form.</span></span>
基金Project partly supported by the National Natural Science Foundation of China (Grant Nos 10575119 and 10235030)
文摘This paper proposes an alternative scheme for generating cluster-type of entangled coherent states. This scheme is based on resonant interaction of a two-mode cavity with a two-level atom driven by strong classical fields. Thus the required interaction time is greatly shortened, which is very important in view of decoherence.
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 60878059,60677044,and 10574022)the Natural Science Foundation of Fujian Province of China (Grant No. 2007J0002)
文摘We propose schemes to generate an n-coherent-pulse GHZ state and a cluster state via the interaction between n coherent pulses and a two-sided cavity. In these schemes, a strong coupling condition is not needed, which makes the protocols possibly able to be implemented based on the current experiment technology.
文摘To sharpen the imaging of structures, it is vital to develop a convenient and efficient quantitative algorithm of the optical coherence tomography (OCT) sampling. In this paper a new Monte Carlo model is set up and how light propagates in bio-tissue is analyzed in virtue of mathematics and physics equations. The relations,in which light intensity of Class 1 and Class 2 light with different wavelengths changes with their permeation depth,and in which Class 1 light intensity (signal light intensity) changes with the probing depth, and in which angularly resolved diffuse reflectance and diffuse transmittance change with the exiting angle, are studied. The results show that Monte Carlo simulation results are consistent with the theory data.
文摘The potential importance of psychological aspects in relation to risk factors for fractures and preventing unhealth behaviour has rarely been investigated in the field of osteoporosis. This study explores some psychological aspects and health behaviour of people detected to have osteoporosis at the time of a forearm fracture. Moreover, it aims at revealing subgroups within this population with clinical relevance for managing secondary prevention actions. Data collection was based on questionnaires and physical tests. Eighty-five individual were analysed. The results confirm earlier research on a similar population having relatively good self-reported health behaviour. The individuals reported high quality of life, high amount of physical activity and low alcohol intake. A majority reported good osteoporosis knowledge, a high sense of coherence (mean = 74) and high activity-specific balance confidence (mean = 81). Furthermore, hierarchical cluster analysis indicated a typology of two subgroups where 75% matched a health-resilient group while 25% matched a health-vulnerable group. The vulnerable group had a significantly lower sense of coherence SOC (p = 0.02) and activity-specific balance confidence, ABC (p = 0.001). This pattern was confirmed from behavioural aspects but only regarding one traditional risk factor namely the history of fractures. The health-vulnerable group achieved a significantly weaker physical profile, less reported time spent outdoors and lower quality of life. The differences found between the subgroups indicate that this typology, as a complement to models based upon relative risk like FRAX, can be relevant for widening perspectives in future research and clinical practice of fracture prevention in osteoporosis.
