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  • Open Access

    ARTICLE

    Analysis of Office-Teaching Comprehensive Buildings Using a Modified Seismic Performance Evaluation Method

    Hanbo Zhu1,2, Changqing Miao1,2,*, Meiling Zhuang1,2

    CMES-Computer Modeling in Engineering & Sciences, Vol.118, No.3, pp. 471-491, 2019, DOI:10.31614/cmes.2019.04382

    Abstract Current building design codes allow the appearance of structural and nonstructural damage under design basis earthquakes. The research regarding probabilistic seismic loss estimation in domestic building structure is urgent. The evaluation in this paper is based on a 11-story reinforced concrete office building, incremental dynamic analysis (IDA) is conducted in Perform 3D program using models capable to simulate all possible limit states up to collapse. Next, the probability distribution of post-earthquake casualties, rebuild costs repair costs and business downtime loss are calculated in PACT software for the studied building considering the modified component vulnerability groups More >

  • Open Access

    ARTICLE

    A Capacity Improving Scheme in Multi-RSUs Deployed V2I

    Yueyun Chen1,*, Zhuo Zeng1, Taohua Chen1, Zushen Liu2, Alan Yang3

    CMC-Computers, Materials & Continua, Vol.60, No.2, pp. 835-853, 2019, DOI:10.32604/cmc.2019.07080

    Abstract The communication reliability and system capacity are two of the key performance indicators for Internet of Vehicles (IoV). Existing studies have proposed a variety of technologies to improve reliability and other performance, such as channel selection and power allocation in Vehicle-to-Infrastructure (V2I). However, these researches are mostly applied in a single roadside unit (RSU) scenario without considering inter-cell interference (ICI) of multi-RSUs. In this paper, considering the distribution characteristics of multi-RSUs deployment and corresponding ICI, we propose a reliable uplink transmission scheme to maximize the total capacity and decrease the interference of multi-RSUs (mRSU-DI) in More >

  • Open Access

    ARTICLE

    High Capacity Data Hiding in Encrypted Image Based on Compressive Sensing for Nonequivalent Resources

    Di Xiao1,*, Jia Liang1, Qingqing Ma1, Yanping Xiang1, Yushu Zhang2

    CMC-Computers, Materials & Continua, Vol.58, No.1, pp. 1-13, 2019, DOI:10.32604/cmc.2019.02171

    Abstract To fulfill the requirements of data security in environments with nonequivalent resources, a high capacity data hiding scheme in encrypted image based on compressive sensing (CS) is proposed by fully utilizing the adaptability of CS to nonequivalent resources. The original image is divided into two parts: one part is encrypted with traditional stream cipher; the other part is turned to the prediction error and then encrypted based on CS to vacate room simultaneously. The collected non-image data is firstly encrypted with simple stream cipher. For data security management, the encrypted non-image data is then embedded More >

  • Open Access

    ARTICLE

    HEAT TRANSFER DETERIORATION EFFECTS OF CRYOGENIC METHANE IN ROCKET ENGINE COOLING CHANNELS

    M. Aruna,*, M. Jose Prakashb

    Frontiers in Heat and Mass Transfer, Vol.11, pp. 1-10, 2018, DOI:10.5098/hmt.11.9

    Abstract Prediction of heat transfer deterioration in rocket engine coolant channels with supercritical flow is essential while designing high pressure rocket engines. Three-dimensional conjugate heat transfer of cryogenic methane in rectangular engine cooling channels at supercritical pressures with asymmetric heating imposed on the bottom channel surface is numerically investigated, focusing on the effects of key parameters such as aspect ratio, heat flux and coolant pressure. Due to the similarity of the coolant channel with that of an actual rocket engine, the results obtained herein are beneficial for the design and optimization of rocket engine cooling systems.… More >

  • Open Access

    ARTICLE

    Online And Offline Scheduling Schemes to Maximize the Weighted Delivered Video Packets Towards Maritime Cpss

    Tingting Yang1, Hailong Feng1, Chengming Yang2, Ge Guo3, Tieshan Li1

    Computer Systems Science and Engineering, Vol.33, No.2, pp. 157-164, 2018, DOI:10.32604/csse.2018.33.157

    Abstract In this paper, the online and offline scheduling schemes towards maritime Cyber Physical Systems (CPSs), to transmit video packets generating from the interior of vessel. During the sailing from the origin port to destination port, the video packets could be delivered via the infostations shoreside. The video packets have their respective release times, deadlines, weights and processing time. The video packets only could be successfully transmitted before their deadlines. A mathematic job-machine problem is mapped. Facing distinguished challenges with unique characteristics imposed in maritime scenario, we focus on the heterogeneous networking and resource optimal scheduling More >

  • Open Access

    ARTICLE

    Physical activity modulates arterial stiffness in children with congenital heart disease: A CHAMPS cohort study*

    Natasha G. Boyes1, Michael K. Stickland2, Stephanie Fusnik1, Elizabeth Hogeweide1, Josie T.J. Fries1, Mark J. Haykowsky3, Chantelle L. Baril1, Shonah Runalls1, Ashok Kakadekar4, Scott Pharis4, Charissa Pockett4, Timothy J. Bradley4, Kristi D. Wright5, Marta Erlandson1, Corey R. Tomczak1

    Congenital Heart Disease, Vol.13, No.4, pp. 578-583, 2018, DOI:10.1111/chd.12614

    Abstract Children with congenital heart disease are at risk for developing increased arterial stiffness and this may be modulated by physical activity. Objective: To compare arterial stiffness in high- and low-physically active children with congenital heart disease and healthy age- and sex-matched controls.
    Patients: Seventeen children with congenital heart disease (12 ± 2 years; females = 9), grouped by low- and high-physical activity levels from accelerometry step count values, and 20 matched controls (11 ± 3 years; females = 9) were studied.
    Outcome Measures: Carotid-radial pulse wave velocity was assessed with applanation tonometry to determine arterial stiffness. Body composition… More >

  • Open Access

    ARTICLE

    Intrauterine growth restriction is not associated with decreased exercise capacity in adolescents with congenital heart disease

    Andrew D. Spearman1, Rohit S. Loomba2, Michael Danduran1, Joshua Kovach1

    Congenital Heart Disease, Vol.13, No.3, pp. 369-376, 2018, DOI:10.1111/chd.12577

    Abstract Objective: Multiple studies demonstrate the association of intrauterine growth restriction (IUGR) with impaired aerobic fitness in adolescents and adults. To our knowledge, there are no studies including individuals with the history of both IUGR and congenital heart disease (CHD). Thus, we sought to evaluate the impact of IUGR on exercise capacity in adolescents with CHD.
    Study Design: We conducted a retrospective chart review of patients <18 years of age who underwent cardiopulmonary exercise testing (CPET) between August 1, 2003 and July 1, 2016. Individuals with birth weight <10th percentile for gestational age were defined as IUGR. Patients… More >

  • Open Access

    ARTICLE

    Home-based interval training increases endurance capacity in adults with complex congenital heart disease

    Camilla Sandberg1,2, Magnus Hedström1, Karin Wadell2, Mikael Dellborg3, Anders Ahnfelt3, Anna-Klara Zetterström4, Amanda Öhrn4, Bengt Johansson1

    Congenital Heart Disease, Vol.13, No.2, pp. 254-262, 2018, DOI:10.1111/chd.12562

    Abstract Objective: The beneficial effects of exercise training in acquired heart failure and coronary artery disease are well known and have been implemented in current treatment guidelines. Knowledge on appropriate exercise training regimes for adults with congenital heart disease is limited, thus further studies are needed. The aim of this study was to examine the effect of home-based interval exercise training on maximal endurance capacity and peak exercise capacity.
    Design: Randomized controlled trial.
    Methods: Twenty-six adults with complex congenital heart disease were recruited from specialized units for adult congenital heart disease. Patients were randomized to either an intervention group—12… More >

  • Open Access

    ARTICLE

    Experimental Investigations on Web Crippling Failure Modesof Aluminum Hollow and Composite Tubes

    Xixiang Chen1, Yu Chen2, *, Kang He2, Fernando Palacios Galarza3

    Structural Durability & Health Monitoring, Vol.12, No.4, pp. 299-322, 2018, DOI:doi:10.32604/sdhm.2018.04625

    Abstract In order to studythe web-crippling behavior of aluminum hollow section subjected toconcentrated load, sixteen aluminum hollow tubes withdifferent loading conditions, bearing lengthandweb slenderness ratioswere tested. This paperalso discusseda method to improve the web crippling strength of the aluminum hollow sections byinfilling the mortar as composite section, and four aluminum composite sections were tested. The literature has reported lots of web crippling tests, butthere isfew reportson web crippling behavior of aluminum composite sections. Interior-Ground(IG) and End-Ground(EG)loading conditions were adopted, with the specimens placed on the ground to simulate the load of floor joists. Specimens were also… More >

  • Open Access

    ARTICLE

    Ductility and Ultimate Capacity of Concrete-Filled Lattice Rectangular Steel Tube Columns

    Chengquan Wang1, Yun Zou1,*, Tianqi Li1, Jie Ding1, Xiaoping Feng1, Tiange Lei1

    Structural Durability & Health Monitoring, Vol.12, No.2, pp. 99-110, 2018, DOI:10.3970/sdhm.2018.02061

    Abstract A kind of concrete-filled lattice rectangular steel tube (CFLRST) column was put forward. The numerical simulation was modeled to analyze the mechanical characteristic of CFLRST column. By comparing the load-deformation curves from the test results, the rationality and reliability of the finite element model has been confirmed, moreover, the change of the section stiffness and stress in the forcing process and the ultimate bearing capacity of the column were analyzed. Based on the model, the comparison of ultimate bearing capacity and ductility between CFLRST column and reinforced concrete (RC) column were also analyzed. The results More >

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