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Self-Fitting Hearing Aids : State of the Art, Challenges, and Future Trends
Ruiyu Liang,Cairong Zou,Qingyun Wang 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.8
The global aging leads to a dramatic increase in the demand for hearing aid. However, the lack of hearing care institutions and hearing professionals makes high price of hearing aids, which hinders the widespread use of hearing aids, especially in the developing countries and the remote areas of developed countries. Compared to the teleaudiology, the self-fitting hearing aid can be installed, fitted, and managed by the users themselves. The whole process hardly needs any professionals and special equipments. Although the research of self-fitting hearing aids is in its infancy, it has significant theoretical value and application prospect. At present, except for some commercial attempts to the self-fitting hearing aids, there are still some problems to be imminently solved. In this survey paper, an overview of the state of the art and prototype design for the self-fitting hearing aid is provided. Then, the challenges for self-fitting hearing aids are discussed. Finally, the future trends of self-fitting hearing aids are prospected.
Energy-Efficient Algorithm for Assigning Verification Tasks in Cloud Storage
( Guangwei Xu ),( Zhifeng Sun ),( Cairong Yan ),( Xiujin Shi ),( Yue Li ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.1
Mobile Cloud Computing has become a promising computing platform. It moves users` data to the centralized large data centers for users` mobile devices to conveniently access. Since the data storage service may not be fully trusted, many public verification algorithms are proposed to check the data integrity. However, these algorithms hardly consider the huge computational burden for the verifiers with resource-constrained mobile devices to execute the verification tasks. We propose an energy-efficient algorithm for assigning verification tasks (EEAVT) to optimize the energy consumption and assign the verification tasks by elastic and customizable ways. The algorithm prioritizes verification tasks according to the expected finish time of the verification, and assigns the number of checked blocks referring to devices` residual energy and available operation time. Theoretical analysis and experiment evaluation show that our algorithm not only shortens the verification finish time, but also decreases energy consumption, thus improving the efficiency and reliability of the verification.
A Rapid Locating Protocol of Corrupted Data for Cloud Data Storage
( Guangwei Xu ),( Yanbin Yang ),( Cairong Yan ),( Yanglan Gan ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.10
The verification of data integrity is an urgent topic in remote data storage environments with the wide deployment of cloud data storage services. Many traditional verification algorithms focus on the block-oriented verification to resolve the dispute of dynamic data integrity between the data owners and the storage service providers. However, these algorithms scarcely pay attention to the data verification charge and the users` verification experience. The users more concern about the availability of accessed files rather than data blocks. Moreover, the data verification charge limits the number of checked data in each verification. Therefore, we propose a mixed verification protocol to verify the data integrity, which rapidly locates the corrupted files by the file-oriented verification, and then identifies the corrupted blocks in these files by the block-oriented verification. Theoretical analysis and simulation results demonstrate that the protocol reduces the cost of the metadata computation and transmission relative to the traditional block-oriented verification at the expense of little cost of additional file-oriented metadata computation and storage at the data owner. Both the opportunity of data extracted and the scope of suspicious data are optimized to improve the verification efficiency under the same verification cost.
Guoliang Fan,Liu Zhao,Cairong Gong,Jia Ma,Gang Xue 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.1
Copper catalysts prepared using two kinds of supports (BaTiO3 and Fe2O3@BaTiO3) have been tested for soot combustion. Perovskite-type oxide BaTiO3 shows excellent properties as support but has small specific surface area. Fe2O3@BaTiO3 core/shell microspheres, as improved support of BaTiO3 support, were fabricated by a hydrothermal-annealing approach. Fe2O3@BaTiO3 support has large specific surface area, which optimizes the contact condition of the gassoot-catalyst three-phase reaction. Due to the Cu-Fe2O3@BaTiO3 interaction, the redox properties of copper are improved. Soot combustion is tested under O2 gas flow and NOx/O2 gas flow, and Fe2O3@BaTiO3 supported copper catalyst (Cu/Fe2O3@BaTiO3) all shows higher catalytic activity and CO2 selectivity than BaTiO3 supported copper catalyst (Cu/BaTiO3).
Jiakuo Zuo,Li Zhao,Yongqiang Bao,Cairong Zou 한국전자통신연구원 2015 ETRI Journal Vol.37 No.3
Traditional designs of cognitive radio (CR) focus on maximizing system throughput. In this paper, we study the joint overlay and underlay power allocation problem for orthogonal frequency-division multiple access–based CR. Instead of maximizing system throughput, we aim to maximize system energy efficiency (EE), measured by a “bit per Joule” metric, while maintaining the minimal rate requirement of a given CR system, under the total power constraint of a secondary user and interference constraints of primary users. The formulated energy-efficient power allocation (EEPA) problem is nonconvex; to make it solvable, we first transform the original problem into a convex optimization problem via fractional programming, and then the Lagrange dual decomposition method is used to solve the equivalent convex optimization problem. Finally, an optimal EEPA allocation scheme is proposed. Numerical results show that the proposed method can achieve better EE performance.
SPECIAL TOPICS IN MARITIME LAW : Developments of Maritime Law in China in 2010-2013
( James Zheng Liang Hu ),( Layna Cairong Zheng ) 고려대학교 법학연구원 2014 The Asian Business Lawyer Vol.13 No.-
This paper introduces and analyses the development of maritime law in China in the years 2010-2013. Such development is mainly in the form of the, new Administrative Regulations on Domestic Waterway Transport the judicial interpretation by the Supreme People’s Court on freight forwarders, the establishment of domestic oil pollution compensation fund, and the new shipping policy applicable in China (Shanghai) Pilot Free Trade Zone.
Robust Energy Efficiency Power Allocation for Uplink OFDM–Based Cognitive Radio Networks
Jiakuo Zuo,Van Phuong Dao,Yongqiang Bao,Shiliang Fang,Li Zhao,Cairong Zou 한국전자통신연구원 2014 ETRI Journal Vol.36 No.3
This paper studies the energy efficiency power allocation forcognitive radio networks based on uplink orthogonalfrequency-division multiplexing. The power allocation problemis intended to minimize the maximum energy efficiencymeasured by “Joule per bit” metric, under total powerconstraint and robust aggregate mutual interference powerconstraint. However, the above problem is non-convex. Tomake it solvable, an equivalent convex optimization problem isderived that can be solved by general fractional programming. Then, a robust energy efficiency power allocation scheme ispresented. Simulation results corroborate the effectiveness ofthe proposed methods.
Family History of Cancer and Head and Neck Cancer Risk in a Chinese Population
Huang, Yu-Hui Jenny,Lee, Yuan-Chin Amy,Li, Qian,Chen, Chien-Jen,Hsu, Wan-Lun,Lou, Pen-Jen,Zhu, Cairong,Pan, Jian,Shen, Hongbing,Ma, Hongxia,Cai, Lin,He, Baochang,Wang, Yu,Zhou, Xiaoyan,Ji, Qinghai,Zho Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.17
Background: The aim of this study was to investigate whether family history of cancer is associated with head and neck cancer risk in a Chinese population. Materials and Methods: This case-control study included 921 cases and 806 controls. Recruitment was from December 2010 to January 2015 in eight centers in East Asia. Controls were matched to cases with reference to sex, 5-year age group, ethnicity, and residence area at each of the centers. Results: We observed an increased risk of head and neck cancer due to first degree family history of head and neck cancer, but after adjustment for tobacco smoking, alcohol drinking and betel quid chewing the association was no longer apparent. The adjusted OR were 1.10 (95% CI=0.80-1.50) for family history of tobacco-related cancer and 0.96 (95%CI=0.75-1.24) for family history of any cancer with adjustment for tobacco, betel quid and alcohol habits. The ORs for having a first-degree relative with HNC were higher in all tobacco/alcohol subgroups. Conclusions: We did not observe a strong association between family history of head and neck cancer and head and neck cancer risk after taking into account lifestyle factors. Our study suggests that an increased risk due to family history of head and neck cancer may be due to shared risk factors. Further studies may be needed to assess the lifestyle factors of the relatives.