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Comparison of totally laparoscopic total gastrectomy using an endoscopic linear stapler with laparoscopic-assisted total gastrectomy using a circular stapler in patients with gastric cancer: a single-center experience

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World Journal of Gastroenterology 2017年第48期23卷 8553-8561页

作者： chung sik gong Byung sik Kim Hee Sung Kim department of gastric surgery asan medical centeruniversity of ulsan college of medicine

AIM To evaluate the safety and efficacy of totally laparoscopic total gastrectomy(TLTG) with esophagojejunostomy using a linear stapler compared with laparoscopic-assisted total gastrectomy(LATG) using a circular stapler in gastric cancer *** We retrospectively reviewed 687 patients who underwent laparoscopic total gastrectomy for gastric cancer at a single institution from August 2008 to August 2014. The patients were divided into two groups according to the type of operation: 421 patients underwent TLTG and 266 underwent LATG. Clinicopathologic characteristics and surgical outcomes in the two groups were compared and *** The TLTG group had higher mean ages at the time of operation(57.78 ± 11.20 years and 55.69 ± 11.96 years,P = 0.020) and more histories of abdominal surgery(20.2% and 12.4%,P = 0.008) compared with the LATG group. Surgical outcomes such as intraoperative and postoperative transfusions,combined operations,pain scores and administration of analgesics,and complications were similar between the two groups. However,compared with the LATG group,the TLTG group required a shorter operation time(149 min vs 170 min,P < 0.001),had lower postoperative hematocrit change(3.49% vs 4.04%,P = 0.002),less intraoperative events(3.1% vs 10.2%,P < 0.001),less intraoperative anastomosis events(2.4% vs 7.1%,P = 0.003),faster postoperative recovery such as median time to first flatus(3.30 d vs 3.60 d,P < 0.001),faster median commencement of soft diet(4.30 d vs 4.60 d,P < 0.001) and shorter length of postoperative hospital stay(6.75 d vs 7.02 d,P = 0.005). CONCLUSION The intracorporeal method for reconstruction of esophagojejunostomy using a linear stapler may be considered a feasible procedure comparing with extracorporeal anastomosis using circular stapler because TLTG is simpler and more straightforward than LATG. Therefore,TLTG can be recommended as an appropriate procedure for gastric cancer.

关键词： Totally laparoscopic total gastrectomy Laparoscopic-assisted total gastrectomy Gastric cancer

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Hierarchical Control Strategy for Load Regulation Based on Stackelberg Game Theory Considering Randomness

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 929-941页

作者： Tingyu Jiang Ping Ju C.Y.chung Yuzhong gong College of Energy and Electrical Engineering Hohai UniversityNanjing 211100China Department of Electrical Engineering City University of Hong KongHong Kong CF624China Department of Electrical and Computer Engineering University of SaskatchewanSaskatoonSK S7N 5A9Canada CSEE IEEE

Demand response has been recognized as a valuable functionality of power systems for mitigating power *** paper proposes a hierarchical control strategy among the distribution system operator(DSO),load aggregators(LAs),and thermostatically controlled loads(TCLs);the strategy includes a scheduling layer and an executive layer to provide load *** the scheduling layer,the DSO(leader)offers compensation price(CP)strategies,and the LAs(followers)respond to CP strategies with available regulation power(ARP)*** of the DSO and LAs are modeled according to their behaviors during the load regulation *** game is adopted to capture interactions among the players and leader and to obtain the optimal strategy for each participant to achieve ***,considering inevitable random factors in practice,e.g.,renewable generation and behavior of users,two different stochastic models based on sample average approximation(SAA)and parameter modification are formulated with improved scheduling *** the executive layer,distributed TCLs are triggered based on strategies determined in the scheduling layer.A self-triggering method that does not violate user privacy is presented,where TCLs receive external signals from the LA and independently determine whether to alter their operation *** simulations are performed on the modified IEEE-24 bus system to verify effectiveness of the proposed strategy.

关键词： Demand response hierarchical control load regulation self-triggering method Stackelberg game

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Highly conductive and tough double-network hydrogels for smart electronics

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SmartMat 2024年第2期5卷 54-66页

作者： Dong Zhang Yijing Tang Xiong gong Yung Chang Jie Zheng Department of Chemical Biomolecularand Corrosion EngineeringThe University of AkronAkronOhioUSA School of Polymer Science and Polymer Engineering The University of AkronAkronOhioUSA R&D Center for Membrane Technology and Department of Chemical Engineering Chung Yuan Christian UniversityTaiwanChina

Development and understanding of highly mechanically robust and electronically conducting hydrogels are extremely important for ever-increasing energy-based *** mixing/blending of conductive additives with hydrophilic polymer network prevents both high mechanical strength and electronic conductivity to be presented in polymer ***,we proposed a double-network(DN)engineering strategy to fabricate PVA/PPy DN hydrogels,consisting of a conductive PPy-PA network via in-situ ultrafast gelation and a tough PVA network via a subsequent freezing/thawing *** resultant PVA/PPy hydrogels exhibited superior mechanical and electrochemical properties,including electrical conductivity of~6.8 S/m,mechanical strength of~0.39 MPa,and elastic moduli of~0.1 *** further transformation of PVA/PPy hydrogels into supercapacitors,they demonstrated a high capacitance of~280.7 F/g and a cycle life of 2000 galvanostatic charge/discharge cycles with over 94.3%capacity retention at the current density of 2 mA/cm2 and even subzero temperatures of−20℃.Such enhanced mechanical performance and electronic conductivity of hydrogels are mainly stemmed from a synergistic combination of continuous electrically conductive PPy-PA network and the two interpenetrating DN *** in-situ gelation strategy is applicable to the integration of ionic-/electrical-conductive materials into DN hydrogels for smart-soft electronics,beyond the most commonly used PEDOT:PSS-based hydrogels.

关键词： conducting polymers double-network hydrogels smart electronics supercapacitors

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Effectiveness of sensory integration therapy in children,focusing on Korean children:A systematic review and meta-analysis

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World Journal of Clinical Cases 2024年第7期12卷 1260-1271页

作者： Seri Oh Jong-sik Jang A-Ra Jeon Geonwoo Kim Mihwa Kwon Bahoe Cho Narae Lee Department of Occupational Therapy Kangwon National University Graduate SchoolSamcheok 25949South Korea Department of Occupational Therapy Kangwon National UniversitySamcheok 25949South Korea Department of Occupational Therapy Ju-Ju Children Development CenterNonsansi 32985Chungcheongnam-doSouth Korea Department of Occupation Therapy Suwon Women’s UniversityGyeonggi-do 16632South Korea Hijam Center for Development of Children Ochang 28117South Korea Department of Occupational Therapy U1 UniversityChung-cheong bukdo 25949South Korea

BACKGROUND Sensory integration intervention is highly related to the child's effective interaction with the environment and the child's ***,various sensory integration interventions are being applied,but research methodological problems are arising due to unsystematic *** study aims to present the optimal intervention protocol by presenting scientific standards for sensory integration intervention through *** To prove the effectiveness of sensory integration therapy,examine the latest trend of sensory integration studies in Korea,and provide clinical evidence for sensory integration *** The database of Korean search engines,including RISS,KISS,and DBpia,was used to search for related literature published from 2001 to October *** keywords,“Children”,“Sensory integration”,“Integrated sensory”,“Sensorymotor”,and“Sensory stimulation”were used in this ***,a meta-analysis was conducted on 24 selected studiesRISS,KISS,and DBpia,was used to search for related literature published from 2001 to October *** keywords,“Children”,“Sensory integration”,“Integrated sensory”,“Sensorymotor”,and“Sensory stimulation”were used in this ***,a meta-analysis was conducted on 24 selected *** Sensory integration intervention has been proven effective in children with cerebral palsy,autism spectrum disorder,attention deficit/hyperactivity disorder,developmental disorder,and intellectual disability in relation to the diagnosis of *** sensory integration therapies,1:1 individual treatment with a therapist or a therapy session lasting for 40 min was most *** terms of dependent variables,sensory integration therapy effectively promoted social skills,adaptive behavior,sensory processing,and gross motor and fine motor *** The results of this study may be used as therapeutic evidence for sensory integration intervention in the clinical field of occupational therapy for

关键词： Children Meta-analysis Occupational therapy Sensory integration Sensory processing Social skills

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Modified analogue forecasting in the hidden Markov frameworkfor meteorological droughts

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Science China(Technological Sciences) 2019年第1期62卷 151-162页

作者： CHEN Si chung GunHui KIM Byung sik KIM Tae-Woong Department of Civil and Environmental Engineering Hanyang University Department of Civil Engineering Hoseo University Department of Urban Environmental Disaster Prevention Engineering Kangwon National University

An analogue method(AM) is a nonparametric approach that has been applied to predict the future states of a dynamic system by following the evolution of the analogues in the historical archive. In this study, we proposed a hidden Markov model(HMM)framework for a modified analogue forecasting(MAF) approach for meteorological droughts in Korea. The unobservable(hidden) state process in the framework aims to model the underlying drought state, while the observation process was formed from the time series of the standardized precipitation index(SPI) as a drought index. Within the framework, the likelihood estimator was used as the measure of similarity between past SPI analogues and current data. The MAF approach was conducted on the selected analogues to make forecasts at lead times of one and three months. The proposed model was applied to five selected stations in Korea using the SPI data from 1973 to 2016. The forecasting performance of the proposed model was tested during the validation period(2003–2016) using several statistical criteria and it was compared to a persistence-based benchmark model. The results showed significant improvement in the forecasting capacity, and satisfactory performance for numerical SPI forecasting and categorical drought forecasting. The results also suggested that the proposed model was able to provide useful information for determining future drought categories for early drought warning with a lead time of up to three months.

关键词： modified analogue forecasting hidden Markov model meteorological drought standardized precipitation index

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Korea Institute of Sport Science:Past,Present and Future

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中国体育科技 2009年第1期45卷 14-18页

作者： Dong-sik chung Korea Institute of Sport Science

Introduction Korea Institute of Sport Science (KISS,formerly named as Korea Sport Science Institute:KSSI) was established on December 29th,1980 to perform research and provide support for better performance of the national *** had clear objective of supporting scientifi c training of national athletes for successful hosting of 1986 Asian Games and 1988 Olympics,both were to be held in Seoul,Korea. The objective was successfully achieved with strong support from the government.

关键词：运动员体育训练训练方法科学训练

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Data-driven Operation Risk Assessment of Wind-integrated Power Systems via Mixture Models and Importance Sampling

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 437-445页

作者： Osama Aslam Ansari Yuzhong gong Weijia Liu Chi Yung chung Department of Electrical and Computer Engineering University of SaskatchewanSaskatoonCanada

The increasing penetration of highly intermittent wind generation could seriously jeopardize the operation reliability of power systems and increase the risk of electricity outages. To this end, this paper proposes a novel data-driven method for operation risk assessment of wind-integrated power systems. Firstly, a new approach is presented to model the uncertainty of wind power in lead time. The proposed approach employs k-means clustering and mixture models(MMs) to construct time-dependent probability distributions of wind *** proposed approach can also capture the complicated statistical features of wind power such as multimodality. Then, a nonsequential Monte Carlo simulation(NSMCS) technique is adopted to evaluate the operation risk indices. To improve the computation performance of NSMCS, a cross-entropy based importance sampling(CE-IS) technique is applied. The CE-IS technique is modified to include the proposed model of wind *** method is validated on a modified IEEE 24-bus reliability test system(RTS) and a modified IEEE 3-area RTS while employing the historical data of wind generation. The simulation results verify the importance of accurate modeling of shortterm uncertainty of wind power for operation risk *** case studies have been performed to analyze the impact of transmission systems on operation risk indices. The computational performance of the framework is also examined.

关键词： Cross entropy mixture model Monte Carlo simulation operation risk power system reliability

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Dynamic-decision-based Real-time Dispatch for Reducing Constraint Violations

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Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 829-838页

作者： Lingshu Zhong Junbo Zhang C.Y.chung Yuzhong gong Lin Guan School of Electrical Power South China University of TechnologyGuangzhou 510640China Department of Electrical and Computer Engineering University of SaskatchewanSaskatoon S7N5A9Canada

This paper proposes a dynamic-decision-based realtime dispatch method to coordinate the economic objective with multiple types of security dispatch objectives while reducing constraint violations in the process of adjusting the system operation point to the *** each decision moment,the following tasks are executed in turn:①locally linearizing the system model at the current operation point with the online model identification by using measurements;②narrowing down the gaps between unsatisfied security requirements and their security thresholds in order of priority;③minimizing the generation cost;④minimizing the security indicators within their security *** with the existing real-time dispatch strategies,the proposed method can adjust the deviations caused by unpredictable power flow fluctuations,avoid dispatch bias caused by model parameter errors,and reduce the constraint violations in the dispatch decision *** effectiveness of the proposed method is verified with the IEEE 39-bus system.

关键词： Dynamic decision real-time dispatch securityconstrained dispatch N-1 security small-signal stability datadriven optimization

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Calcium and Calmodulin-Mediated Regulation of Gene Expression in Plants

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Molecular Plant 2009年第1期2卷 13-21页

作者： Min Chul Kim Woo sik chung Dae-Jin Yun Moo Je Cho Division of Applied Life Science (BK21 Program) Plant Molecular Biology and Biotechnology Research Center and Environmental Biotechnology National Core Research Center Gyeongsang National University Jinju 660-701 Korea

Sessile plants have developed a very delicate system to sense diverse kinds of endogenous developmental cues and exogenous environmental stimuli by using a simple Ca^2＋ ion. Calmodulin （CAM） is the predominant Ca^2＋ sensor and plays a crucial role in decoding the Ca^2＋ signatures into proper cellular responses in various cellular compartments in eukaryotes. A growing body of evidence points to the importance of Ca^2＋ and CaM in the regulation of the transcriptional process during plant responses to endogenous and exogenous stimuli. Here, we review recent progress in the identification of transcriptional regulators modulated by Ca^2＋ and CaM and in the assessment of their functional significance during plant signal transduction in response to biotic and abiotic stresses and developmental cues.

关键词： Abiotic/environmental stress calcium signaling/transport gene expression.

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Effects of drought stress on root morphology and spatial distribution of soybean and adzuki bean

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Journal of Integrative Agriculture 2021年第10期20卷 2639-2651页

作者： Hyen chung CHUN Sanghun LEE Young Dae CHOI Dong Hyeok gong Ki Youl JUNG Crop Production Technology Research Division National Institute of Crop ScienceMiryang-si 50424Republic of Korea

Due to global climate change,Korea is facing severe droughts that affect the planting and early vegetative periods of upland *** and adzuki bean are important legume crops in Korea,so it is critical to understand their adaptations to water *** study investigated the changes in root morphological properties in soybean and adzuki bean and quantified the findings using fractal *** experiment was performed at the National Institute of Crop Science in Miryang,*** and adzuki beans were planted in test boxes and grown for 30 *** boxes were filled with bed soil with various soil moisture *** images were obtained and scanned every two days,and the root properties were characterized by root length,depth and surface area,number of roots,and fractal parameters(fractal dimension and lacunarity).Root depth,length and surface area and the number of roots increased in both crops as the soil moisture content *** fractal dimension and lacunarity values increased as the soil moisture content *** results indicated that the greater the soil moisture,the more heterogeneous the root *** analysis of the morphological properties and fractal parameters indicated that soybean and adzuki bean had different root structure *** soybean and adzuki bean were sensitive to the amount of soil moisture in the early vegetative *** required a soil moisture content greater than 70%of the field capacity to develop a full root structure,while adzuki bean required 100%of the field *** results would be useful in understanding the responses of soybean and adzuki bean to water stress and managing irrigation during cultivation.

关键词： soybean adzuki bean root morphology fractal dimension soil water content

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