A Novel Approach for Fault Location of Overhead Transmission Line with Non-Contact Magnetic Field Measurement

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Coherent quantum effects through dispersive bosonic media

The coherent evolution of two atomic qubits mediated by a set of bosonic field modes is investigated. By assuming a specific encoding of the quantum states in the internal levels of the two atoms we show that entangling quantum gates can be realised, with high fidelity, even when a large number of mediating modes is involved. The effect of losses and imperfections on the gates' operation is also considered in detail.Comment: 7 pages, 10 figure

Research on automatic grinding platform for rare earth ingot casting

Aiming at the problems of low grinding efficiency and difficulty in ensuring grinding uniformity of rare earth metal ingots, a rare earth metal ingot grinding system was designed. Based on Creo software and ANSYS/Workbench software, the kinematics analysis, modal analysis and transient dynamics analysis were carried out on the walking mechanism and flipping mechanism of automatic displacement platform of grinding system. The results show that the rare earth metal ingot grinding system has good stability and is beneficial to improving the grinding quality

Research on automatic grinding platform for rare earth ingot casting

Aiming at the problems of low grinding efficiency and difficulty in ensuring grinding uniformity of rare earth metal ingots, a rare earth metal ingot grinding system was designed. Based on Creo software and ANSYS/Workbench software, the kinematics analysis, modal analysis and transient dynamics analysis were carried out on the walking mechanism and flipping mechanism of automatic displacement platform of grinding system. The results show that the rare earth metal ingot grinding system has good stability and is beneficial to improving the grinding quality

Broadband point measurement of transient magnetic interference in substations with magnetoresistive sensors

This journal issue contain selected papers from the Asia-Pacific Data Storage Conference (APDSC'13)Electromagnetic interference (EMI) in substations can be an obstacle for the development of the Smart Grid. This challenge is particularly critical since more and more secondary systems are transferred from control rooms to switching yards in modern power systems. Thus, it is important to develop a tool that can properly characterize and evaluate the EMI level. This paper introduces a novel broadband point measurement technology for evaluating the effect of transient magnetic field (TMF) on secondary systems in substations. The received disturbance level is defined for the victim circuit and the evaluation approach is proposed. The effect of sensor size on the measurement of TMF is explained and illustrated with numerical simulation, indicating the importance of point measurement. The designed measurement system was tested and the TMF caused by charging traveling wave in a 110-kV substation was characterized. Our results show that the TMF may produce significant effect on the secondary systems in a substation, and thus it is important to have the capability to evaluate the interference level.published_or_final_versio

Composite Correlation Quantization for Efficient Multimodal Retrieval

Efficient similarity retrieval from large-scale multimodal database is pervasive in modern search engines and social networks. To support queries across content modalities, the system should enable cross-modal correlation and computation-efficient indexing. While hashing methods have shown great potential in achieving this goal, current attempts generally fail to learn isomorphic hash codes in a seamless scheme, that is, they embed multiple modalities in a continuous isomorphic space and separately threshold embeddings into binary codes, which incurs substantial loss of retrieval accuracy. In this paper, we approach seamless multimodal hashing by proposing a novel Composite Correlation Quantization (CCQ) model. Specifically, CCQ jointly finds correlation-maximal mappings that transform different modalities into isomorphic latent space, and learns composite quantizers that convert the isomorphic latent features into compact binary codes. An optimization framework is devised to preserve both intra-modal similarity and inter-modal correlation through minimizing both reconstruction and quantization errors, which can be trained from both paired and partially paired data in linear time. A comprehensive set of experiments clearly show the superior effectiveness and efficiency of CCQ against the state of the art hashing methods for both unimodal and cross-modal retrieval

Dihydropyrimidine dehydrogenase activity correlates with fluorouracil sensitivity in breast cancer

The fluoropyrimidine drug fluorouracil (FU) is one of the most frequently prescribed chemotherapeutic drugs for the curative and palliative treatment of various cancer patients. The identification of biological factors associated with tumors either responsiveness or resistance to FU chemotherapy, including FU, is increasingly being recognized as an important field of clinical cancer research. Aim: to analyze the relationship between intra-tumoral dihydropyrimidine dehydrogenase (DPD) level and FU chemosensitivity, as DPD is the initial and rate-limiting enzyme in the catabolism of FU. Materials and Methods: The histoculture drug response assay (HDRA) was performed for 54 patients. DPD expression was examined in 81 tumor samples from breast cancer patients received two cycles of FU-based primary chemotherapy before operation. Results: We found that intra-tumoral DPD enzyme activity was inversely correlated with FU cytotoxicity. We also revealed that low DPD expression was correlated with clinical response to FU-based primary chemotherapy. Conclusions: Our study indicated that DPD is a promising molecular maker for identifying tumor cells sensitivity in breast cancer patients receiving FU-based chemotherapy.Препарат ряда флуоропиримидина, флуороурацил (FU), является одним из наиболее часто используемых химиотерапевтических препаратов паллиативной терапии больных онкологического профиля. Определение биологических факторов, связанных с чувствительностью либо с устойчивостью опухолей к химиотерапевтическим препаратам, в том числе и к FU, является одним из наиболее важных направлений клинических исследований в онкологии. Цель: проанализировать взаимосвязь между внутриопухолевым уровнем дигидропиримидин дегидрогеназы (DPD) и чувствительностью клеток к FU, поскольку DPD является начальным и лимитирующим энзимом в катаболизме FU. Материалы и методы: определяли чувствительность к препаратам в гистокультуре (histoculture drug response assay, HDRA) у 54 пациентов. Экспрессия гена DPD изучена в 81 образце опухолевой ткани больных раком молочной железы, которым провели два цикла неоадъювантной химиотерапии с применением FU. Результаты: показано, что внутриопухолевая активность DPD обратно коррелирует с цитотоксичностью FU. Также выявлено, что сниженная экспрессия гена DPD коррелиирует с высоким клиническим ответом на первичную химиотерапию, основанную на FU. Выводы: результаты исследования дают основание считать DPD потенциальным молекулярным маркером чувствительности клеток злокачественных опухолей молочной железы к FU

Schramm-Loewner Equations Driven by Symmetric Stable Processes

We consider shape, size and regularity of the hulls of the chordal Schramm-Loewner evolution driven by a symmetric alpha-stable process. We obtain derivative estimates, show that the complements of the hulls are Hoelder domains, prove that the hulls have Hausdorff dimension 1, and show that the trace is right-continuous with left limits almost surely.Comment: 22 pages, 4 figure