29 research outputs found

    Education in IT Security: A Case Study in Banking Industry

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    The banking industry has been changing incessantlyand facing new combination of risks. Data protection andcorporate security is now one of the major issues in bankingindustry. As the rapid changing on technologies from time totime, the industry should be aware on new technologies in orderto protect information assets and prevent fraud activities. Thispaper begins with literature study of information security issuesand followed by focused-group interviews with five participantswithin the industry and survey analysis of “The global state ofInformation Security survey 2013” which published byPriceWaterhouseCoopers (PWC). Trends and questions werediscussed as well as possible solution. The study suggests that ITsecurity education should be made to different level of staffs suchas executives, professional and general staffs. Besides, thebanking industry should increase company-wide securityawareness and the importance of corporate security which keepthe information and physical assets secure and in a proper way

    Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

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    Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

    Characterization of libid-based DNA delivery systems

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    This thesis is focused on characterizing two lipid-based gene delivery systems: plasmid DNA-cationic lipid "complexes" and stabilized plasmid-lipid particles (SPLP). Complexes have utility for gene transfer in vitro whereas SPLP are designed for systemic gene therapy applications in vivo. In Chapter 2, the structural and fusogenic properties of complexes formed by mixing pCMV5 plasmid DNA with large unilamellar vesicles (LUVs) composed of the cationic lipid N-[2,3-(dioleyloxy)propyl]- N,N,N-trimethylammonium chloride (DOTMA) and l,2-dioleoyl-3-phosphatidylethanolamine (DOPE) or l,2-dioleoyl-3- phosphatidylcholine (DOPC) are examined and correlated with transfection potency. It is shown, employing lipid mixing fusion assays, that pCMV5 plasmid strongly promotes fusion between these cationic vesicles. Freeze fracture electron microscopy studies demonstrate association of cationic vesicles to form clusters at low pCMV5 content, whereas macroscopic fused aggregates can be observed at higher plasmid levels. ³¹P NMR studies on the fused DNA-DOTMA/DOPE (1:1) complexes obtained at high plasmid levels (charge ratio 1.0) reveal narrow "isotropic" ³¹P NMR resonances, whereas the corresponding DOPC containing systems exhibit much broader "bilayer" ³¹P NMR spectra. In agreement with previous studies, the transfection potency of the DOPE containing systems is dramatically higher than for the DOPC containing complexes, indicating a correlation between transfection potential and the motional properties of endogenous lipids. It is suggested that the ³¹P NMR characteristics of complexes lipid structures, which may play a direct role in the fusion or membrane destabilization events vital to transfection. In Chapter 3, the influence of variations in the lipid component of SPLP on plasmid trapping and transfection potency in vitro are characterized. It is shown that SPLP formed with different monovalent cationic lipids exhibit similar plasmid entrapment properties but different transfection potencies. The poly(ethylene glycol) (PEG) density in SPLP can substantially influence both SPLP formation and transfection. By decreasing the length of the fatty acyl component of the PEG-ceramide anchor from 20 to 14 to 8 carbons, or by using smaller PEG chains (PEG₇₅₀, PEG₂₀₀₀ as compared with PEG₅₀₀₀), higher transfection levels were observed, consistent with a requirement for PEG removal in order for efficient transfection to occur. Further, it is shown that the primary factor limiting the transfection potency of SPLP is association and uptake into target cells. The final set of experiments in Chapter 4 was focused on characterizing the influence of the plasmid component in the formation of SPLP. It is shown that encapsulation efficiencies remain at 50 % or higher for (initial) plasmid-to-lipid ratios of up to 70 μg/μmol, allowing the proportion of lipid in empty vesicles following detergent dialysis to be significantly reduced compared to previous protocols. In addition, it is shown that the encapsulation efficiency is sensitive to the conformation of the plasmid employed, where higher encapsulation is observed for linearized plasmid as compared to plasmid in supercoiled or relaxed circular conformations. However, lower transfection potency for linearized plasmid was observed in SPLP and plasmid DNA-cationic lipid complexes.Medicine, Faculty ofBiochemistry and Molecular Biology, Department ofGraduat

    Polo-like kinase 1, a new therapeutic target in hepatocellular carcinoma

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    10.3748/wjg.v18.i27.3527World Journal of Gastroenterology18273527-3536WJGA

    Design of monolithic RF power amplifier using bulk BiCMOS process

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    A low-voltage monolithic 900MHz power amplifier has been fabricated in a commercial 0.8μm bulk BiCMOS process with an integrated output tuned circuit. The tuned circuit is implemented by a monolithic inductor of 2.6nH with 54μm metal width. The output power of the amplifier is 14dBm

    Delrin as an occluder material

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    ASAIO Transactions363M417-M421ASAT

    A high-output-current and low-power-loss thin-film transistor liquid-crystal display (TFT-LCD) driver for portable devices

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    The application range of traditional thin-film transistor (TFT) liquid-crystal display (LCD) drivers powered by switched-capacitor DC-DC converters (charge pumps) used in portable devices are, to a certain extent, restricted because of their inability to support applications that require high driving current for generating high resolution graphics or powering larger LCD panels. This paper reviews the limitations of charge pumps when used on TFT-LCD drivers fabricated using the chip-on-glass (COG) packaging technology. A high-output-current low-power-loss boost-type DC-DC converter is proposed to replace traditional charge pumps while retaining the existing COG packaging technology in order to reduce production cost. A prototype of the proposed converter is designed with a standard 0.13 μm HV CMOS process. Compared with traditional designs, the proposed converter demonstrates that it is capable of delivering a higher driving current at a much smaller power loss.Department of Electronic and Information Engineerin
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