目的基于饲料近红外光谱数据筛选影响猪配合饲料主要品质指标的关键波长变量,从而建立饲料品质无损快速定量校正模型,进而提高饲料品质无损快速检测效率。方法采集饲料样品近红外光谱数据并获取水分、粗蛋白、粗脂肪、粗纤维参考值数据...目的基于饲料近红外光谱数据筛选影响猪配合饲料主要品质指标的关键波长变量,从而建立饲料品质无损快速定量校正模型,进而提高饲料品质无损快速检测效率。方法采集饲料样品近红外光谱数据并获取水分、粗蛋白、粗脂肪、粗纤维参考值数据;剔除异常值后采用基于联合X-Y距离样本集划分法(sample set partitioning based on joint X-Y distance, SPXY)划分校正集和外部验证集;基于校正集数据采用蒙特卡罗-无信息变量消除-连续投影算法分别针对4个品质指标筛选25、20、15、10、5个关键变量,分别建立校正模型并对外部验证集进行预测。结果针对饲料水分、粗蛋白、粗脂肪、粗纤维所选关键变量个数分别为15、25、15、15,模型维数分别为9、11、10、9,测定系数分别为0.8288、0.8605、0.9338、0.8327,校正均方根误差分别为0.17、0.81、0.31、0.22,交互验证均方根误差分别为0.19、0.93、0.34、0.23,相对预测性能分别为2.79、2.38、4.01、2.89。结论通过变量筛选结合外部验证结果表明,在保证模型准确度的前提下,所选关键变量数明显少于全谱变量数,可为提高饲料多品质无损快速定量检测工作效率提供一定的参考。展开更多
The sender shares six-particle maximally entangled states as quantum channel with the receiver. If the quantum channel is secure, the sender performs projective measurements and tells the measurement outcome to the re...The sender shares six-particle maximally entangled states as quantum channel with the receiver. If the quantum channel is secure, the sender performs projective measurements and tells the measurement outcome to the receiver. The receiver performs the unitary transformations and makes projective measurements on his particles to obtain the secret information. Using teleportation, the transmission of three-qubit secret information can be completed in each quantum channel展开更多
In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot （DQD） system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and...In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot （DQD） system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and a continuous-variable system, respectively. It is shown that quantum information encoded in the two-state DQD system can be transferred to quantum states of the cavity field with a continuous-variable basis through appropriate projective measurements with respect to the DQD.展开更多
The multi-media music teaching is to make video projector, video display, computer, TV, video order, CD, VCD, booth, acoustics, teaching software, and other media become an organic whole, and it is the floorboard of t...The multi-media music teaching is to make video projector, video display, computer, TV, video order, CD, VCD, booth, acoustics, teaching software, and other media become an organic whole, and it is the floorboard of the modem teaching equipment. Multimedia technology takes advantages of media combination including text, images, animation, sound that can hold information, it provides variegated and multidimensional teaching information space for the music teaching by the form of text, sound, music and so on, it makes the teaching content and mode of music teaching better improvement and enrichment, and it provides the technical support for music education modernization, and it is a new technology which is introduced into the field of teaching in recent years. Mastering the function of multimedia teaching as soon as possible and applying it effectively to music classroom teaching is the need of modem education reform and development.展开更多
Street-level visualization is an important application of 3D city models.Challenges to street-level visualization include the cluttering of buildings due to fine detail and visualization performance.In this paper,a no...Street-level visualization is an important application of 3D city models.Challenges to street-level visualization include the cluttering of buildings due to fine detail and visualization performance.In this paper,a novel method is proposed for streetlevel visualization based on visual saliency evaluation.The basic idea of the method is to preserve these salient buildings in a scene while removing those that are non-salient.The method can be divided into pre-processing procedures and real-time visualization.The first step in pre-processing is to convert 3D building models at higher Levels of Detail(Lo Ds) into LoD 1 models with simplified ground plans.Then,a number of index viewpoints are created along the streets; these indices refer to both the position and the direction of each street site.A visual saliency value is computed for each building,with respect to the index site,based on a visual difference between the original model and the generalized model.We calculate and evaluate three methods for visual saliency:local difference,global difference and minimum projection area.The real-time visualization process begins by mapping the observer to its closest indices.The street view is then generated based on the building information stored in those indexes.A user study shows that the local visual saliency method performs better than do the global visual saliency,area and image-based methods and that the framework proposed in this paper may improve the performance of 3D visualization.展开更多
In this paper, the issue of swapping quantum entanglements in two arbitrary biqubit pure states via a local bipartite entangledstate projective measure in the middle node is studied in depth, especially with regard to...In this paper, the issue of swapping quantum entanglements in two arbitrary biqubit pure states via a local bipartite entangledstate projective measure in the middle node is studied in depth, especially with regard to quantitative aspects. Attention is mainly focused on the relation between the measure and the final entanglement obtained via swapping. During the study, the entanglement of formation(EoF) is employed as a quantifier to characterize and quantify the entanglements present in all involved states. All concerned EoFs are expressed analytically; thus, the relation between the final entanglement and the measuring state is established.Through concrete analyses, the measure demands for getting a certain amount of a final entanglement are revealed. It is found that a maximally entangled final state can be obtained from any two given initial entangled states via swapping with a certain probability;however, a peculiar measure should be performed. Moreover, some distinct properties are revealed and analyzed. Such a study will be useful in quantum information processes.展开更多
文摘目的基于饲料近红外光谱数据筛选影响猪配合饲料主要品质指标的关键波长变量,从而建立饲料品质无损快速定量校正模型,进而提高饲料品质无损快速检测效率。方法采集饲料样品近红外光谱数据并获取水分、粗蛋白、粗脂肪、粗纤维参考值数据;剔除异常值后采用基于联合X-Y距离样本集划分法(sample set partitioning based on joint X-Y distance, SPXY)划分校正集和外部验证集;基于校正集数据采用蒙特卡罗-无信息变量消除-连续投影算法分别针对4个品质指标筛选25、20、15、10、5个关键变量,分别建立校正模型并对外部验证集进行预测。结果针对饲料水分、粗蛋白、粗脂肪、粗纤维所选关键变量个数分别为15、25、15、15,模型维数分别为9、11、10、9,测定系数分别为0.8288、0.8605、0.9338、0.8327,校正均方根误差分别为0.17、0.81、0.31、0.22,交互验证均方根误差分别为0.19、0.93、0.34、0.23,相对预测性能分别为2.79、2.38、4.01、2.89。结论通过变量筛选结合外部验证结果表明,在保证模型准确度的前提下,所选关键变量数明显少于全谱变量数,可为提高饲料多品质无损快速定量检测工作效率提供一定的参考。
基金supported by the National Natural Science Foundation of China under Grant No.10704011the Research Programs of the Educational Office of Liaoning Province under Grant No.2008006
文摘The sender shares six-particle maximally entangled states as quantum channel with the receiver. If the quantum channel is secure, the sender performs projective measurements and tells the measurement outcome to the receiver. The receiver performs the unitary transformations and makes projective measurements on his particles to obtain the secret information. Using teleportation, the transmission of three-qubit secret information can be completed in each quantum channel
基金Supported by the National Fundamental Research Program under Grant No.2007CB925204the National Natural Science Foundation of China under Grant Nos.10775048 and 10325523the Education Committee of Hunan Province under Grant No.08W012
文摘In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot （DQD） system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and a continuous-variable system, respectively. It is shown that quantum information encoded in the two-state DQD system can be transferred to quantum states of the cavity field with a continuous-variable basis through appropriate projective measurements with respect to the DQD.
文摘The multi-media music teaching is to make video projector, video display, computer, TV, video order, CD, VCD, booth, acoustics, teaching software, and other media become an organic whole, and it is the floorboard of the modem teaching equipment. Multimedia technology takes advantages of media combination including text, images, animation, sound that can hold information, it provides variegated and multidimensional teaching information space for the music teaching by the form of text, sound, music and so on, it makes the teaching content and mode of music teaching better improvement and enrichment, and it provides the technical support for music education modernization, and it is a new technology which is introduced into the field of teaching in recent years. Mastering the function of multimedia teaching as soon as possible and applying it effectively to music classroom teaching is the need of modem education reform and development.
基金supported by the National Natural Science Foundation of China(Grant No.41201486)the National Key Technologies R&D Program of China(Grant No.SQ2013GX07E00985)the project of the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) in the Collaborative Innovation Center of Modern Grain Circulation and Security,Nanjing University of Finance and Economics
文摘Street-level visualization is an important application of 3D city models.Challenges to street-level visualization include the cluttering of buildings due to fine detail and visualization performance.In this paper,a novel method is proposed for streetlevel visualization based on visual saliency evaluation.The basic idea of the method is to preserve these salient buildings in a scene while removing those that are non-salient.The method can be divided into pre-processing procedures and real-time visualization.The first step in pre-processing is to convert 3D building models at higher Levels of Detail(Lo Ds) into LoD 1 models with simplified ground plans.Then,a number of index viewpoints are created along the streets; these indices refer to both the position and the direction of each street site.A visual saliency value is computed for each building,with respect to the index site,based on a visual difference between the original model and the generalized model.We calculate and evaluate three methods for visual saliency:local difference,global difference and minimum projection area.The real-time visualization process begins by mapping the observer to its closest indices.The street view is then generated based on the building information stored in those indexes.A user study shows that the local visual saliency method performs better than do the global visual saliency,area and image-based methods and that the framework proposed in this paper may improve the performance of 3D visualization.
基金supported by the National Natural Science Foundation of China(Grant Nos.11375011 and 11372122)the Natural Science Foundation of Anhui Province(Grant No.1408085MA12)the 211 Project of Anhui University
文摘In this paper, the issue of swapping quantum entanglements in two arbitrary biqubit pure states via a local bipartite entangledstate projective measure in the middle node is studied in depth, especially with regard to quantitative aspects. Attention is mainly focused on the relation between the measure and the final entanglement obtained via swapping. During the study, the entanglement of formation(EoF) is employed as a quantifier to characterize and quantify the entanglements present in all involved states. All concerned EoFs are expressed analytically; thus, the relation between the final entanglement and the measuring state is established.Through concrete analyses, the measure demands for getting a certain amount of a final entanglement are revealed. It is found that a maximally entangled final state can be obtained from any two given initial entangled states via swapping with a certain probability;however, a peculiar measure should be performed. Moreover, some distinct properties are revealed and analyzed. Such a study will be useful in quantum information processes.
