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check,check on和check up on
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作者 谢应光 《语言教育》 1995年第1期31-32,共2页
check,check on 和 check up on 都包含“检查”、“核对”的意义。例如:1.checkI have checked your answers and none of them are correct.我检查了你的答案,没有一个正确。When I checked my shopping list I found I’d forgotten ... check,check on 和 check up on 都包含“检查”、“核对”的意义。例如:1.checkI have checked your answers and none of them are correct.我检查了你的答案,没有一个正确。When I checked my shopping list I found I’d forgotten to buy eggs.我核对购物单时发现忘记买蛋了。 展开更多
关键词 checked CORRECT SHOPPING check up on check check on 不及物动词 facts things 美国英语 直接宾语
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Influence of initial check, information exchange, final accuracy check, reaction information nursing on the psychology of elderly with lung cancer 被引量:2
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作者 Cui Jiang Jing Ma +1 位作者 Wen He Hai-Ying Zhang 《World Journal of Clinical Cases》 SCIE 2024年第4期737-745,共9页
BACKGROUND As one of the fatal diseases with high incidence,lung cancer has seriously endangered public health and safety.Elderly patients usually have poor self-care and are more likely to show a series of psychologi... BACKGROUND As one of the fatal diseases with high incidence,lung cancer has seriously endangered public health and safety.Elderly patients usually have poor self-care and are more likely to show a series of psychological problems.AIM To investigate the effectiveness of the initial check,information exchange,final accuracy check,reaction(IIFAR)information care model on the mental health status of elderly patients with lung cancer.METHODS This study is a single-centre study.We randomly recruited 60 elderly patients with lung cancer who attended our hospital from January 2021 to January 2022.These elderly patients with lung cancer were randomly divided into two groups,with the control group taking the conventional propaganda and education and the observation group taking the IIFAR information care model based on the conventional care protocol.The differences in psychological distress,anxiety and depression,life quality,fatigue,and the locus of control in psychology were compared between these two groups,and the causes of psychological distress were analyzed.RESULTS After the intervention,Distress Thermometer,Hospital Anxiety and Depression Scale(HADS)for anxiety and the HADS for depression,Revised Piper’s Fatigue Scale,and Chance Health Locus of Control scores were lower in the observation group compared to the pre-intervention period in the same group and were significantly lower in the observation group compared to those of the control group(P<0.05).After the intervention,Quality of Life Questionnaire Core 30(QLQ-C30),Internal Health Locus of Control,and Powerful Others Health Locus of Control scores were significantly higher in the observation and the control groups compared to the pre-intervention period in their same group,and QLQ-C30 scores were significantly higher in the observation group compared to those of the control group(P<0.05).CONCLUSION The IIFAR information care model can help elderly patients with lung cancer by reducing their anxiety and depression,psychological distress,and fatigue,improving their tendencies on the locus of control in psychology,and enhancing their life qualities. 展开更多
关键词 Initial check information exchange final accuracy check reaction information care model Lung cancer Mental health
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Computation Tree Logic Model Checking of Multi-Agent Systems Based on Fuzzy Epistemic Interpreted Systems
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作者 Xia Li Zhanyou Ma +3 位作者 Zhibao Mian Ziyuan Liu Ruiqi Huang Nana He 《Computers, Materials & Continua》 SCIE EI 2024年第3期4129-4152,共24页
Model checking is an automated formal verification method to verify whether epistemic multi-agent systems adhere to property specifications.Although there is an extensive literature on qualitative properties such as s... Model checking is an automated formal verification method to verify whether epistemic multi-agent systems adhere to property specifications.Although there is an extensive literature on qualitative properties such as safety and liveness,there is still a lack of quantitative and uncertain property verifications for these systems.In uncertain environments,agents must make judicious decisions based on subjective epistemic.To verify epistemic and measurable properties in multi-agent systems,this paper extends fuzzy computation tree logic by introducing epistemic modalities and proposing a new Fuzzy Computation Tree Logic of Knowledge(FCTLK).We represent fuzzy multi-agent systems as distributed knowledge bases with fuzzy epistemic interpreted systems.In addition,we provide a transformation algorithm from fuzzy epistemic interpreted systems to fuzzy Kripke structures,as well as transformation rules from FCTLK formulas to Fuzzy Computation Tree Logic(FCTL)formulas.Accordingly,we transform the FCTLK model checking problem into the FCTL model checking.This enables the verification of FCTLK formulas by using the fuzzy model checking algorithm of FCTL without additional computational overheads.Finally,we present correctness proofs and complexity analyses of the proposed algorithms.Additionally,we further illustrate the practical application of our approach through an example of a train control system. 展开更多
关键词 Model checking multi-agent systems fuzzy epistemic interpreted systems fuzzy computation tree logic transformation algorithm
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层厚对使用CT/SIM Check模体联合iQA软件检测CT模拟机的影响
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作者 时飞跃 程龙 +3 位作者 王敏 秦伟 赵环宇 魏晓为 《中国医疗设备》 2023年第7期17-22,共6页
目的探讨层厚大小对使用CT/SIM Check模体联合iQA软件检测放疗CT模拟机数据结果的影响。方法对1台西门子Sensation Open CT模拟机,使用6种放疗扫描协议扫描1套CT/SIM Check模体,扫描完成后重建1.5、2、3、4和5 mm共5种层厚的CT图像序列... 目的探讨层厚大小对使用CT/SIM Check模体联合iQA软件检测放疗CT模拟机数据结果的影响。方法对1台西门子Sensation Open CT模拟机,使用6种放疗扫描协议扫描1套CT/SIM Check模体,扫描完成后重建1.5、2、3、4和5 mm共5种层厚的CT图像序列。使用iQA软件对这些CT图像序列进行自动分析并生成报表,对报表上的质控数据结果进行分析和比较。结果通过对报表数据进行分析,得到了6种扫描协议和5种层厚情形下22种参数的质控数据,对5种不同层厚的数据计算得到了相应的四分位数间距值。由数据结果可见,HU均一性和插件4内标准差的数据随层厚的增加而减小;扫描中心纵向坐标的数值随层厚的增加有下降的趋势;线宽比-灵敏度截面的数据随层厚的增加而变大。结论使用CT/SIM Check模体联合iQA软件检测CT模拟机,层厚对HU均一性、插件4内标准差、扫描中心纵向坐标和线宽比-灵敏度截面的质控数据结果有较大影响,对其他参数的数据也有不同程度的影响。本研究为物理师使用CT/SIM Check模体联合iQA软件检测放疗CT模拟机的质控工作,提供了有益的数据参考。 展开更多
关键词 CT模拟机 质控 CT/SIM check模体 iQA软件 层厚
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Elite capture,the“follow-up checks”policy,and the targeted poverty alleviation program:Evidence from rural western China 被引量:5
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作者 CHENG Xiao-yu WANG Jian-ying Kevin Z.CHEN 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2021年第4期880-890,共11页
Decentralized methods for targeting poverty are widely adopted in developing countries to improve the performance of various poverty alleviation programs.A common challenge for implementing successful decentralized ta... Decentralized methods for targeting poverty are widely adopted in developing countries to improve the performance of various poverty alleviation programs.A common challenge for implementing successful decentralized targeting is the existence of elite capture.China has recently implemented a nationwide decentralized poverty targeting program,the targeted poverty alleviation(TPA)policy,to achieve the national goal of eliminating absolute poverty by the end of 2020.As the largest decentralized poverty targeting program in the world,TPA's successful implementation was believed to be threatened by elite capture in some earlier reports.Since 2015,a targeting correction mechanism,called"follow-up checks"policy,has been introduced.With the"follow-up checks"policy,the elites and other ineligible households who receive benefits under TPA were removed from the program.This paper investigates the elite capture phenomenon in TPA using village census data from a poverty-stricken county in 2017-two years after implementing the"follow-up checks"policy.We find no evidence of elite capture in TPA.The elites are unlikely to become beneficiaries or receive more benefits than non-elites.Our results contradict earlier findings that reported elite capture in TPA.We argue that the reason is the accountability emphasized by the central government in the"follow-up checks"policy.Our findings imply that having proper accountability is critical for improving targeting performance by global antipoverty initiatives. 展开更多
关键词 elite capture decentralized poverty targeting targeted poverty alleviation the"follow-up checks"policy ACCOUNTABILITY
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Dynamic Modeling Framework of Sediment Trapped by Check-Dam Networks:A Case Study of a Typical Watershed on the Chinese Loess Plateau 被引量:1
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作者 Pengcheng Sun Yiping Wu 《Engineering》 SCIE EI CAS CSCD 2023年第8期209-221,共13页
Check-dam construction is an effective and widely used method for sediment trapping in the Yellow River Basin and other places over the world that are prone to severe soil erosion.Quantitative estimations of the dynam... Check-dam construction is an effective and widely used method for sediment trapping in the Yellow River Basin and other places over the world that are prone to severe soil erosion.Quantitative estimations of the dynamic sediment trapped by check dams are necessary for evaluating the effects of check dams and planning the construction of new ones.In this study,we propose a new framework,named soil and water assessment tool(SWAT)–dynamic check dam(DCDam),for modeling the sediment trapped by check dams dynamically,by integrating the widely utilized SWAT model and a newly developed module called DCDam.We then applied this framework to a typical loess watershed,the Yan River Basin,to assess the time-varying effects of check-dam networks over the past 60 years(1957–2016).The DCDam module generated a specific check-dam network to conceptualize the complex connections at each time step(monthly).In addition,the streamflow and sediment load simulated by using the SWAT model were employed to force the sediment routing in the check-dam network.The evaluation results revealed that the SWAT-DCDam framework performed satisfactorily,with an overestimation of 11.50%,in simulating sediment trapped by check dams,when compared with a field survey of the accumulated sediment deposition.For the Yan River Basin,our results indicated that the designed structural parameters of check dams have evolved over the past 60 years,with higher dams(37.14%and 9.22%increase for large dams and medium dams,respectively)but smaller controlled areas(46.03%and 10.56%decrease for large dams and medium dams,respectively)in recent years.Sediment retained by check dams contributed to approximately 15.00%of the total sediment load reduction in the Yan River during 1970–2016.Thus,our developed framework can be a promising tool for evaluating check-dam effects,and this study can provide valuable information and support to decision-making for soil and water conservation and check-dam planning and management. 展开更多
关键词 check dams Dynamic check dam(DCDam) Loess Plateau Sediment trapping SWAT
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Identifying Counterexamples Without Variability in Software Product Line Model Checking 被引量:1
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作者 Ling Ding Hongyan Wan +1 位作者 Luokai Hu Yu Chen 《Computers, Materials & Continua》 SCIE EI 2023年第5期2655-2670,共16页
Product detection based on state abstraction technologies in the software product line(SPL)is more complex when compared to a single system.This variability constitutes a new complexity,and the counterexample may be v... Product detection based on state abstraction technologies in the software product line(SPL)is more complex when compared to a single system.This variability constitutes a new complexity,and the counterexample may be valid for some products but spurious for others.In this paper,we found that spurious products are primarily due to the failure states,which correspond to the spurious counterexamples.The violated products correspond to the real counterexamples.Hence,identifying counterexamples is a critical problem in detecting violated products.In our approach,we obtain the violated products through the genuine counterexamples,which have no failure state,to avoid the tedious computation of identifying spurious products dealt with by the existing algorithm.This can be executed in parallel to improve the efficiency further.Experimental results showthat our approach performswell,varying with the growth of the system scale.By analyzing counterexamples in the abstract model,we observed that spurious products occur in the failure state.The approach helps in identifying whether a counterexample is spurious or genuine.The approach also helps to check whether a failure state exists in the counterexample.The performance evaluation shows that the proposed approach helps significantly in improving the efficiency of abstraction-based SPL model checking. 展开更多
关键词 Software product line model checking parallel algorithm
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Lower Incidence of Positive Gynecological Cancers in Examinees of a Unique Health Check-Up Institute, Ningen Dock in Japan, 2011-2016
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作者 Chinatsu Koiwai Satoshi Ichigo +2 位作者 Hiroshi Takagi Hiroyuki Kajikawa Atsushi Imai 《Open Journal of Obstetrics and Gynecology》 2017年第5期545-551,共7页
The present study aims to determine the gynecologic health status of asymptomatic women at a unique Japanese Health Check-up Institute, Ningen Dock. Medical records of Japanese women, who underwent gynecological medic... The present study aims to determine the gynecologic health status of asymptomatic women at a unique Japanese Health Check-up Institute, Ningen Dock. Medical records of Japanese women, who underwent gynecological medical (health) examinations between January 2011 and December 2016, were retrospectively reviewed. Of the cervical smears from 8927 women aged 18 - 85 years, 50 (0.6%) were classified as dysplastic and malignant changes: 18 of low-grade squamous intraepithelial lesion, 10 high-grade squamous intraepithelial lesion, 21 atypical squamous cells of undetermined significance and 1 cervical squamous cell carcinoma. No case of cervical adenocarcinoma was found. Ultrasonographic examination detected uterus enlargements and ovary tumors in 2.0% and 0.9% of cases, respectively. Most of participants (95.6%) revealed no gynecologic abnormalities. The present study based on the records of Ningen Dock, where asymptomatic participants undergo a medical examination at their own expense, showed very low incidence of abnormal cytologic and/or ultrasonographic findings. 展开更多
关键词 CERVICAL SMEAR Screening TRANSVAGINAL SONOGRAPHY Health check-up Ningen DOCK
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Trends in age distribution of participants in a self-covered and a public expense-covered health check-up programs in Japan
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作者 Maki Ogawa Atsushi Imai 《Health》 2012年第9期567-569,共3页
Objective: In Japan, there are unique facilities (namely Ningen Dock) of health check-up, where asymptomatic participants undergo a medical examination at their own expense. The earlier occurrence of cervical cancer a... Objective: In Japan, there are unique facilities (namely Ningen Dock) of health check-up, where asymptomatic participants undergo a medical examination at their own expense. The earlier occurrence of cervical cancer and the concern on screening prompted us compare to the age distribution in the self-covered system with that of free physical check-up programs at public expense. Methods: We analyzed medical records of Japanese women, who underwent gynecological examinations at self-covered expense and at public expense between for the periods 2002-2011 and 2005-2009, respectively, restricting examinee’s age group. Results: For self-covered system, approximately 80% of the overall examinee population was occupied with three age groups 30-39, 40-49 and 50-59. The participants was extremely fewer in the over 60 years age group accounting for 10%, compared to those for the public expense-covered system, the over 60 years age group being 25%. Participant under the age of 30 years seemed to increase in chronological order in both systems. Conclusion: The level of knowledge on sexually transmitted infections may contribute to screening promotion for the younger women, while the elderly over 60 years’ attitudes toward screening may be mainly related to social-economic status and/or public expense support. 展开更多
关键词 Health check-up CERVICAL Cancer Sexually Transmitted Disease Human PAPILLOMAVIRUS Age Distribution
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A Spatialization-based Method for Checking and Updating Metadata
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作者 ZHAO Ren-liang WANG Dong-hua +3 位作者 SHI Li-hong ZHANG Bei-fei SHANG Yao-ling WANG Zhong-xiang 《Journal of China University of Mining and Technology》 2005年第3期183-186,共4页
In this paper the application of spatialization technology on metadata quality check and updating was dis-cussed. A new method based on spatialization was proposed for checking and updating metadata to overcome the de... In this paper the application of spatialization technology on metadata quality check and updating was dis-cussed. A new method based on spatialization was proposed for checking and updating metadata to overcome the defi-ciency of text based methods with the powerful functions of spatial query and analysis provided by GIS software. Thismethod employs the technology of spatialization to transform metadata into a coordinate space and the functions ofspatial analysis in GIS to check and update spatial metadata in a visual environment. The basic principle and technicalflow of this method were explained in detail, and an example of implementation using ArcMap of GIS software wasillustrated with a metadata set of digital raster maps. The result shows the new method with the support of interactionof graph and text is much more intuitive and convenient than the ordinary text based method, and can fully utilize thefunctions of GIS spatial query and analysis with more accuracy and efficiency. 展开更多
关键词 METADATA data quality checking SPATIALIZATION spatial analysis
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Serum Uric Acid Level Has Stronger Correlations with Metabolic Syndrome-Related Markers in Women than in Men in a Japanese Health Check-Up Population
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作者 Reiko Seki Tsubasa Kimura Kazuo Inoue 《Open Journal of Epidemiology》 2020年第4期399-418,共20页
<strong><em>Background</em></strong> A serum uric acid (UA) level of 7.0 mg/dL has been used as the criterion for hyperuricemia in Japan regardless of gender, despite higher serum UA levels in ... <strong><em>Background</em></strong> A serum uric acid (UA) level of 7.0 mg/dL has been used as the criterion for hyperuricemia in Japan regardless of gender, despite higher serum UA levels in men than in women. Serum UA has been identified as a predictive biomarker for metabolic syndrome (MetS);however, the gender differences in the association between UA levels and MetS-related conditions in a Japanese population have not been completely assessed. <strong><em>Objective</em></strong> To examine gender and age differences in the associations between serum UA levels and other biomarkers within a health-screened Japanese population and to evaluate the usefulness of serum UA as a predictor of MetS between the two genders. <strong><em>Methods</em></strong> A cross-sectional study of healthy individuals in Japan (16,391 men;16,656 women) was conducted. Associations between UA and several biomarkers were analyzed for each gender type and for age- and serum UA level-stratified groups. Logistic regression was used to analyze the association of age and serum UA levels with MetS-related conditions. Receiver operating characteristic (ROC) curve analysis was performed to identify the UA cut-off value for predicting the risk of the MetS-related conditions. <strong><em>Results</em></strong> Serum UA levels in women had stronger correlations with MetS-related biomarkers than in men. After adjusting for age, the odds ratios for a 1-mg/dL serum UA increase for diabetes mellitus and dyslipidemia in women were 1.13 (95% confidence interval, 1.04 - 1.23) and 1.30 (1.25 - 1.34), respectively. In ROC analysis, women had significantly higher area under the curve (AUC) values for MetS prediction than men. <em><strong>Conclusion</strong></em> An elevated serum UA level has a higher predictive ability for the risk of MetS-related conditions in Japanese women than in men. The optimal serum UA cut-off value for MetS in women was suggested to be approximately 5 mg/dL, remarkably lower than that in men. 展开更多
关键词 URATE Metabolic Syndrome Gender Difference Health check
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The Design of Circuit for Checking Short in HT-7U Superconducting Tokamak Device
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作者 刘大海 陈灼民 武松涛 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第3期323-327,共5页
The tokamak HT-7U project has been funded as a Chinese national project since 1998. The main object of the project is to build a nuclear fusion experimental device with divertor configuration, which is designed by the... The tokamak HT-7U project has been funded as a Chinese national project since 1998. The main object of the project is to build a nuclear fusion experimental device with divertor configuration, which is designed by the Institute of Plasma Physics, the Chinese Academy of Sciences (ASIPP). It is a full superconducting device, consisting of superconducting toroidal field (TF) coils and superconducting poloidal field (PF) coil. During the operation of the device, the operational parameter of device should be checked by technical diagnosis. This paper describes the design of circuit for checldng short between every two parts of the HT7U device. The main contents of design include circuit of data acquisition and data processing of computer. 展开更多
关键词 The Design of Circuit for checking Short in HT-7U Superconducting Tokamak Device
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Credit Checking Market Setting up Gradually in China
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作者 Faqi Jin Yingzi Wu Rong Xiao 《Chinese Business Review》 2005年第8期14-21,共8页
This paper describes the present condition of credit checking industry and the market of Chinese, elaborates what has restricted Chinese credit development, presents the possible credit products of current Chinese cre... This paper describes the present condition of credit checking industry and the market of Chinese, elaborates what has restricted Chinese credit development, presents the possible credit products of current Chinese credit checking market, forecasts the profits of credit checking service in China, and indicates the strategic steps of operation on credit checking service in China. "Credit" is one of the most popular words in the last two years in China, every thing related to credit will heat up, and the credit management is also becoming a burgeoning industry and comes to front. The development of economy has called for construction of the social credit system, which brings great business opportunities to the credit management agency. Therefore, the government, the industry and the private focus on this wealth dinner. Once deeming it as a great opportunity some far-sighted men bravely begin to take tough practice in the huge market. From then on, some credit management companies have come into being a part of the credit checking agent industry. 展开更多
关键词 credit checking present condition development strategy
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Fast clogging problem of open check dams and a new type suggestion:curved footed type open check dam
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作者 ANILAN Tugce AKCALI Emre 《Journal of Mountain Science》 SCIE CSCD 2023年第5期1201-1219,共19页
Driftwood is one of the important physical components in mountainous rivers which causes severe hazards due to the clogging of bridges,culverts,and narrow sections during floods.Therefore,the understanding of driftwoo... Driftwood is one of the important physical components in mountainous rivers which causes severe hazards due to the clogging of bridges,culverts,and narrow sections during floods.Therefore,the understanding of driftwood dynamics and mitigation measures are crucial for managing wood in rivers.Open check dams are the most commonly used engineering measure for preventing driftwood from reaching downstream areas.Nevertheless,these open check dams frequently lose their sediment transport function when they are blocked by sediment and driftwood,especially during major flood events.This paper proposes a new type of open check dam for preventing from clogging.Thus,flume experiments were conducted to examine the influence of different types of open check dams on the characteristics of driftwood deposition.For the model with wood length(LWD)=16.5 cm,wood diameter(D)=15 mm,and wood number(N)=172,the highest trapping efficiency was observed with 90.1%and 87.2%retention rates for the classical debris flow breaker and curved footed open check dams,respectively.Laboratory tests showed that through this proposed design,woody debris blockage in a very short time was prevented from the accumulation of woods beside the dam.In addition to this,most of the sediment passed through the check dam and most of the driftwood got trapped.It can be briefly stated that the geometrical design of the structure plays an important role and can be chosen carefully to optimize trapping efficiency.By designing this type of open check dams in mountain river basins,it may provide a better understanding of the driftwood accumulation and basis for the optimal design of these structures.Further development of the solution proposed in this work can pave the way for designing different types of open check dams for effective flood management. 展开更多
关键词 Debris flow Open check dam DRIFTWOOD Trapping efficiency Sediment transport Flood management Riverflow
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Check dam extraction from remote sensing images using deep learning and geospatial analysis:A case study in the Yanhe River Basin of the Loess Plateau,China
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作者 SUN Liquan GUO Huili +4 位作者 CHEN Ziyu YIN Ziming FENG Hao WU Shufang Kadambot H M SIDDIQUE 《Journal of Arid Land》 SCIE CSCD 2023年第1期34-51,共18页
Check dams are widely used on the Loess Plateau in China to control soil and water losses,develop agricultural land,and improve watershed ecology.Detailed information on the number and spatial distribution of check da... Check dams are widely used on the Loess Plateau in China to control soil and water losses,develop agricultural land,and improve watershed ecology.Detailed information on the number and spatial distribution of check dams is critical for quantitatively evaluating hydrological and ecological effects and planning the construction of new dams.Thus,this study developed a check dam detection framework for broad areas from high-resolution remote sensing images using an ensemble approach of deep learning and geospatial analysis.First,we made a sample dataset of check dams using GaoFen-2(GF-2)and Google Earth images.Next,we evaluated five popular deep-learning-based object detectors,including Faster R-CNN,You Only Look Once(version 3)(YOLOv3),Cascade R-CNN,YOLOX,and VarifocalNet(VFNet),to identify the best one for check dam detection.Finally,we analyzed the location characteristics of the check dams and used geographical constraints to optimize the detection results.Precision,recall,average precision at intersection over union(IoU)threshold of 0.50(AP_(50)),IoU threshold of 0.75(AP_(75)),and average value for 10 IoU thresholds ranging from 0.50-0.95 with a 0.05 step(AP_(50-95)),and inference time were used to evaluate model performance.All the five deep learning networks could identify check dams quickly and accurately,with AP_(50-95),AP_(50),and AP_(75)values higher than 60.0%,90.0%,and 70.0%,respectively,except for YOLOv3.The VFNet had the best performance,followed by YOLOX.The proposed framework was tested in the Yanhe River Basin and yielded promising results,with a recall rate of 87.0%for 521 check dams.Furthermore,the geographic analysis deleted about 50%of the false detection boxes,increasing the identification accuracy of check dams from 78.6%to 87.6%.Simultaneously,this framework recognized 568 recently constructed check dams and small check dams not recorded in the known check dam survey datasets.The extraction results will support efficient watershed management and guide future studies on soil erosion in the Loess Plateau. 展开更多
关键词 check dam deep learning geospatial analysis remote sensing Faster R-CNN Loess Plateau
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Flood risk assessment of check dams in the Wangmaogou watershed on the Loess Plateau of China
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作者 GAO Ze-chao SHI Peng +4 位作者 LI Zhan-bin LI Peng BAI Lu-lu JIA Yi-li CUI Lin-zhou 《Journal of Mountain Science》 SCIE CSCD 2023年第12期3631-3647,共17页
Check dams have been widely used in China’s Loess Plateau region due to their effectiveness in erosion and flood control.However,the safety and stability of the check dam decrease with the operation process,which inc... Check dams have been widely used in China’s Loess Plateau region due to their effectiveness in erosion and flood control.However,the safety and stability of the check dam decrease with the operation process,which increases the probability of dam failure during flood events and threatens local residents’ life and property.Thus,this study simulated flood process of the check dam failure in the Wangmaogou watershed in Yulin City,Shaanxi Province,China,calculated different types of inundation losses based on the flood inundation area within the watershed,and determined the number of key flood protection check dams by classifying the flood risk levels of the check dams.The results showed that 5 dams in the watershed were subject to overtopping during different rainfall return periods,which was related to their flood discharge capacity.Dam failure flood process showed a rapid growth trend followed by slow decrease,and the time of flood peak advanced with increase in the return period.After harmonization of evaluation scales,the magnitude of flood inundation losses can be ranked as:economic losses(212.409 million yuan) > life losses(10.368 million yuan) > ecological losses(6.433 million yuan).The risk value for both individual dams and the whole dam system decreases as the return period increases.The number of key flood protection check dams in the Wangmaogou watershed was 2,3,3,3,4,and 5 for floods with return periods of 10,20,30,50,100,and 200 years,respectively.The results provided a theoretical basis for the safe operation and risk evaluation of check dams in the Loess Plateau Hills watershed. 展开更多
关键词 check dam Return period Flood control risk Dam failure Inundation loss
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Sediment sources and their impacts on a check dam-controlled watershed, Loess Plateau, China
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作者 BAI Lu-lu SHI Peng +9 位作者 WANG Wen LI Zhan-bin YU Kun-xia LI Peng CUI Ling-zhou SHEN Rong-jian GUAN Mu-hong DU Xin-chun ZHANG Xun-le CHEN Wen-fu 《Journal of Mountain Science》 SCIE CSCD 2023年第6期1660-1673,共14页
Soil erosion is a major issue in Loess Plateau,China,and quantitative analyses of sediment sources are crucial for soil erosion control.In this study,a combination of flood couplet analysis and composite fingerprint i... Soil erosion is a major issue in Loess Plateau,China,and quantitative analyses of sediment sources are crucial for soil erosion control.In this study,a combination of flood couplet analysis and composite fingerprint identification was used for historical reconstructions of soil erosion in sediment source areas in Loess Plateau.Each flood couplet was constructed based on sediment 137Cs activity,and past soil erosion was calculated using soil bulk density and storage capacity curves.The contribution rates of the sediment sources were calculated using the fingerprinting method,and the amount of erosion in the sediment source areas was estimated.The best fingerprint combination(Cr,Ni,V,and TOC)enabled a 97.2%recognition of sediment sources from 29 flood events(1956–1990)in the Loess Plateau.The contribution rates of gullies,farmland,grassland,and shrubland were 44.89%,26.38%,10.49%,and 18.24%,respectively.These four land use types contributed 1,227,751,512,and 279 tons of sediments,respectively.Re-vegetation decreased soil erosion(1966–1983),whereas deforestation increased soil erosion(1956–1965 and 1984–1990).Rational soil and water conservation measures on slopes and check dam construction in gullies are therefore suggested to mitigate erosion. 展开更多
关键词 check dam Sediment source Soil and water conservation Land use changes Loess Plateau
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亿万富翁“捡”的又是什么?──谈pick up the check的译法
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作者 金静 《大学英语》 2000年第8期31-,共1页
关键词 check the
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Study on Problems and Countermeasures in the Management of Spot Check of Chinese Herbal Pieces
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作者 Cui Yihang Chen Binbin Sun Lihua 《Asian Journal of Social Pharmacy》 2023年第2期107-115,共9页
Objective To provide suggestions for optimizing the sampling management of Chinese herbal pieces and improving the quality Chinese herbal pieces.Methods Logical reasoning method was used to analyze the problems in the... Objective To provide suggestions for optimizing the sampling management of Chinese herbal pieces and improving the quality Chinese herbal pieces.Methods Logical reasoning method was used to analyze the problems in the drug spot check of Chinese herbal pieces based on the data of drug quality published by the National Medical Products Administration from 2013 to 2021,combined with the current provisions and implementation of drug spot check management in China.Results and Conclusion At present,there are some problems in the drug spot check of Chinese herbal pieces,such as fewer varieties of Chinese herbal pieces in the national drug spot check,the unreasonable sampling links,the insufficient territorial management in some areas,and error-prone sample extraction.It is suggested that the actual quantity and overall quality of Chinese herbal pieces should be fully considered in the formulation of sampling plan.Besides,the variety coverage of drug spot check of traditional Chinese medicine should be strengthened.In the planning,the sampling links shall be made as a whole,and the credit rating and distribution of drug production,operation and use units within the jurisdiction shall be fully combined.While strengthening the sampling management at the production end in areas with concentrated industries,regional special drug spot check should be carried out or the administrative forces at the provincial,municipal and county levels should be fully mobilized to avoid local protection.In the assigned tasks,the name of Chinese herbal pieces should be accurately expressed to avoid the sampling errors of Chinese herbal pieces with the same original medicinal materials and different processing methods. 展开更多
关键词 Chinese herbal pieces drug spot check evaluation spot check supervision spot check
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Review of Software Model-Checking Techniques for Dealing with Error Detection in Program Codes
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作者 Ednah Olubunmi Aliyu 《Journal of Software Engineering and Applications》 2023年第6期170-192,共23页
Debugging software code has been a challenge for software developers since the early days of computer programming. A simple need, because the world is run by software. So perhaps the biggest engineering challenge is f... Debugging software code has been a challenge for software developers since the early days of computer programming. A simple need, because the world is run by software. So perhaps the biggest engineering challenge is finding ways to make software more reliable. This review provides an overview of techniques developed over time in the field of software model checking to solve the problem of detecting errors in program code. In addition, the challenges posed by this technology are discussed and ways to mitigate them in future research and applications are proposed. A comprehensive examination of the various model verification methods used to detect program code errors is intended to lay the foundation for future research in this area. 展开更多
关键词 Software Model checking Symbolic Execution State Explosion ABSTRACTION Test Case Generations
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