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Ling-Ling Xie,Yuan-Dong Xu,Jie-Jie Zhang,Cheng-Peng Zhang,Xiao-Yu Cao,Ling-Bo Qu 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.4
Er-doped LiV3O8 as cathode material for secondary lithium batteries was prepared through a rheological phase reaction method. The as-prepared materials were investigated by x-ray diffraction (XRD), scanning electron microscopy (SEM), and galvanostatic discharge/charge measurements. The results indicate that Er doped phase preserves the layered structure of the pristine LiV3O8 and has an enlarged interlayer spacing. Compared to LiV3O8 sample, Er-doped LiV3O8 sample displays more uniform particles and large surface area. The electrochemical test shows that Er doping does not change the process of Li+ insertion/deinsertion. Er-doped LiV3O8 electrode exhibits an initial discharge capacity of 294.2 mAh g−1 and maintains a stable capacity of 220.7 mAh g−1 after 50 cycles, indicating a greatly improved good cycleability comparing with the undoped one.
A Novel Crawler Based on Loginning Simulation for Weibo Social Network
Ling Xing,Ling Jiang,Bao Peng 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.1
With the rapid development of Weibo, which is the most popular microblog in china, more and more attention was paid to relative studies about it. With the objective of gathering precise information data from Weibo, which is the groundwork of these researches, a novel high efficient Weibo crawler (WCrawler) based on loginning simulation is designed. The priority evaluation is described to ensure the correlation between entires. MD5 is introduced to check for duplicates of URL crawled. Experiments demonstrate that the novel crawler has an efficiency and integrity of information collecting compared with API crawler. In addition, we present a summary of the data that collected from Weibo social network by WCrawler.
An Enhanced Privacy-Aware Authentication Scheme for Distributed Mobile Cloud Computing Services
( Ling Xiong ),( Daiyuan Peng ),( Tu Peng ),( Hongbin Liang ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.12
With the fast growth of mobile services, Mobile Cloud Computing(MCC) has gained a great deal of attention from researchers in the academic and industrial field. User authentication and privacy are significant issues in MCC environment. Recently, Tsai and Lo proposed a privacy-aware authentication scheme for distributed MCC services, which claimed to support mutual authentication and user anonymity. However, Irshad et.al. pointed out this scheme cannot achieve desired security goals and improved it. Unfortunately, this paper shall show that security features of Irshad et.al.’s scheme are achieved at the price of multiple time-consuming operations, such as three bilinear pairing operations, one map-to-point hash function operation, etc. Besides, it still suffers from two minor design flaws, including incapability of achieving three-factor security and no user revocation and re-registration. To address these issues, an enhanced and provably secure authentication scheme for distributed MCC services will be designed in this work. The proposed scheme can meet all desirable security requirements and is able to resist against various kinds of attacks. Moreover, compared with previously proposed schemes, the proposed scheme provides more security features while achieving lower computation and communication costs.
Finite Element Analysis and Test Study on Restraint of High-energy Pipe Whip in Conventional Island
Ling-yun Peng,Yu-ke Deng,Hua-ting Chen,Ying-jie Kang,Xiang-xiu Li 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.4
The effects of high-energy pipe whipping after rupturing are very important in an AP1000 nuclear power plant's conventional island and restraints of pipe whipping should be considered in the design. It is the first time in the country when reinforced concrete shear walls are used as restraint services. In this paper, the behaviors of walls and restraint services subjected to pipe whipping are analyzed through static and dynamic methods in the finite element software (ABAQUS), in which all kinds of nonlinearities are considered. In addition, a test study on the restraint of pipe whipping is conducted. The results show that the wall and the restraint service can prevent pipe whipping effectively under the design load, and anchor plates arranged around the wall opening can improve the local concrete compression performance of concrete to reduce the damage of concrete. Meanwhile, the study also provides the valuable reference for wall designing to prevent from pipe whipping.
Peng, Hong-Ling,He, Lei,Zhao, Xia Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.5
Purpose: E-cadherin is a transmemberane protein which is responsible for adhesion of endothelial cells. The aim of our study was to assess existing evidence of associations between reduced expression of E-cadherin and prognosis of ovarian cancer with a discussion of potential approaches to exploiting any prognostic value for improved clinical management. Methods: We conducted a meta-analysis of 9 studies (n=915 patients) focusing on the correlation of reduced expression of E-cadherin with overall survival. Data were synthesized with random or fixed effect hazard ratios. Results: The studies were categorized by author/year, number of patients, FIGO stage, histology, cutoff value for E-cadherin positivity, and methods of hazard rations (HR) estimation, HR and its 95% confidence interval (CI). Combined hazard ratios suggested that reduced expression of E-cadherin positivity was associated with poor overall survival (OS), HR= 2.10, 95% CI:1.13-3.06. Conclusion: The overall survival of the E-cadherin negative group with ovarian cancer was significant poorer than the E-cadherin positive group. Upregulation of E-cadherin is an attractive therapeutic approach that could exert significant effects on clinical outcome of ovarian cancer.
Tube-in-tube airway management in a patient with Montgomery T-tube in situ -a case report-
Peng Ling,Wei Wei 대한마취통증의학회 2021 Korean Journal of Anesthesiology Vol.74 No.2
Background: Montgomery T-tube (MTT) is a useful airway device but is seldom used. Owing to its specific shape and structure, it is challenging for anesthesiologists to manage airway in patients with MTT in situ who require general anesthesia and continuous positive-pressure ventilation (CPPV). Case: A 48-year-old 74-kg man with an MTT in situ was scheduled for local pancreatic resection under general anesthesia. We transorally inserted a cuffed endotracheal tube into the intratracheal limb of the MTT to achieve CPPV and to deliver the inhalation anesthetic. The endotracheal tube was removed successfully after the patient fully recovered from anesthesia. No tracheal injury or hemorrhage occurred after intubation or extubation, and the location of the MTT remained unchanged.Conclusions: Transoral insertion of a cuffed endotracheal tube into the intratracheal limb of the MTT could therefore be considered as a safe and feasible approach for airway management.
MUTUAL FUND ADVERTISING AND FUND CONSUMER REDEMPTION BEHAVIOR
Kuan-Ling Lai,Miao-Ling Chen,Chi-Lu Peng 글로벌지식마케팅경영학회 2014 Global Marketing Conference Vol.2014 No.7
This study employs a trading dataset from a top investment bank in Taiwan to examine whether and how mutual fund advertising influences fund consumers’ redemption behavior, and whether the effect of advertising differs between small- and large-amount fund consumers. The evidence of this study shows that, on average, fund consumers redeem more non-advertised funds as their returns increase, while fund advertising slows their redemptions. The results from quantile regression show that fund advertising plays an important role in affecting redemption-performance sensitivity of large-amount and medium-amount investors. After taking advertising into account, large-amount and medium-amount investors reduce their fund redemptions. The results suggest that advertising, as a transmission of information, varies with investors’ wealth levels and that these differences in advertising matter to investors’ redemptions. This study contributes to understanding the role of advertising in fund consumers’ realized behavior and is useful for fund companies because they can more efficiently allocate limited resources such as advertising to support the growth of fund assets under management.
MUTUAL FUND ADVERTISING AND FUND CONSUMER REDEMPTION BEHAVIOR
Kuan-Ling Lai,Miao-Ling Chen,Chi-Lu Peng 글로벌지식마케팅경영학회 2014 Global Marketing Conference Vol.2014 No.5
This study employs a trading dataset from a top investment bank in Taiwan to examine whether and how mutual fund advertising influences fund consumers’ redemption behavior, and whether the effect of advertising differs between small- and large-amount fund consumers. The evidence of this study shows that, on average, fund consumers redeem more non-advertised funds as their returns increase, while fund advertising slows their redemptions. The results from quantile regression show that fund advertising plays an important role in affecting redemption-performance sensitivity of large-amount and medium-amount investors. After taking advertising into account, large-amount and medium-amount investors reduce their fund redemptions. The results suggest that advertising, as a transmission of information, varies with investors’ wealth levels and that these differences in advertising matter to investors’ redemptions. This study contributes to understanding the role of advertising in fund consumers’ realized behavior and is useful for fund companies because they can more efficiently allocate limited resources such as advertising to support the growth of fund assets under management.