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Development of intelligent ship ballast water allocation in the future
Jiang Xiaochen,Song Lei,Zhou Jia 국제이네비해양경제학회 2022 International Journal of e-Navigation and Maritime Vol.19 No.1
Maritime navigation is an important mode of transportation in the country. With the development of the country and the world, there will inevitably be higher requirements for the safe transportation of ships in the future. Therefore, intelligent ships have become the latest research direction in ship design. And with the gradual development and improvement of big data and artificial intelligence technology in the industrial field, smart ships are an inevitable trend in the development of the shipbuilding industry. Smart ships need to maintain the stability of the ship to ensure the safety of the ship when operating at sea. Therefore, the research on the autonomous stowage of ballast water for smart ships in the future is very important. This paper analyzes the development background of intelligent ships, introduces the ship optimization model and optimization design algorithm, and speculates the future development direction of intelligent ships.
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Xinglin Du,Xiaochen Hou,Yiqiao Guo,Dong Jiang 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
In this study, cellulose acetate (CA)/poly-(γ-glutamic acid) (γ-PGA)/TiO2 fibrous membrane were prepared byelectrospinning. The wettability of the fibrous membrane was studied by using water contact angle measurements. Scanningelectron and thermogravimetric analyses were carried out to determine the microstructure of the fibers and the thermalstability of the membrane. A study was conducted on the corn seedlings grew of the CA/γ-PGA/TiO2 fibrous membranebasedagricultural film in soil at room temperature. Maize plant height, leaf area and SPAD (Soil and plant analyzerdevelopment) were investigated when covered with a CA/γ-PGA fibrous membrane and a CA/γ-PGA/TiO2 fibrousmembrane. In a simultaneous fashion, water absorption and degradation rate were also studied. Our study highlights thepotential use of these fibrous membranes for mulching film applications. The fibrous membrane may also find potentialapplication in food packing materials, facial masks and antimicrobial films of wound dressing.
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Effects of Dual-Energy CT with Non-Linear Blending on Abdominal CT Angiography
Sulan Li,Chaoqin Wang,Xiaochen Jiang,Ge Xu 대한영상의학회 2014 Korean Journal of Radiology Vol.15 No.4
Objective: To determine whether non-linear blending technique for arterial-phase dual-energy abdominal CT angiography (CTA) could improve image quality compared to the linear blending technique and conventional 120 kVp imaging. Materials and Methods: This study included 118 patients who had accepted dual-energy abdominal CTA in the arterial phase. They were assigned to Sn140/80 kVp protocol (protocol A, n = 40) if body mass index (BMI) < 25 or Sn140/100 kVp protocol (protocol B, n = 41) if BMI ≥ 25. Non-linear blending images and linear blending images with a weighting factor of 0.5 in each protocol were generated and compared with the conventional 120 kVp images (protocol C, n = 37). The abdominal vascular enhancements, image noise, signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and radiation dose were assessed. Statistical analysis was performed using one-way analysis of variance test, independent t test, Mann-Whitney U test, and Kruskal-Wallis test. Results: Mean vascular attenuation, CNR, SNR and subjective image quality score for the non-linear blending images in each protocol were all higher compared to the corresponding linear blending images and 120 kVp images (p values ranging from < 0.001 to 0.007) except for when compared to non-linear blending images for protocol B and 120 kVp images in CNR and SNR. No significant differences were found in image noise among the three kinds of images and the same kind of images in different protocols, but the lowest radiation dose was shown in protocol A. Conclusion: Non-linear blending technique of dual-energy CT can improve the image quality of arterial-phase abdominal CTA, especially with the Sn140/80 kVp scanning.
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Qingting Feng,Lingkai Xu,Lin Li,Junlan Qiu,Ziwei Huang,Yiqing Jiang,Tao Wen,Shun Lu,Fang Meng,Xiaochen Shu 대한암학회 2021 Cancer Research and Treatment Vol.53 No.3
Purpose The prevalence of multi-morbidities with colorectal cancer (CRC) is known to be increasing. Particularly prognosis of CRC patients co-diagnosed with metabolic syndrome (MetSyn) was largely unknown. We aimed to examine the death risk of CRC patients according to the multiple MetSyn morbidities.Materials and Methods We identified CRC patients with MetSyn from the electronic medical records (EMR) systems in five independent hospitals during 2006-2011. Information on deaths was jointly retrieved from EMR, cause of death registry and chronic disease surveillance as well as study-specific questionnaire. Cox proportional hazards regression was used to calculate the overall and CRC-specific hazards ratios (HR) comparing MetSyn CRC cohort with reference CRC cohort.Results A total of 682 CRC patients in MetSyn CRC cohort were identified from 24 months before CRC diagnosis to 1 month after. During a median follow-up of 92 months, we totally observed 584 deaths from CRC, 245 being in MetSyn cohort and 339 in reference cohort. Overall, MetSyn CRC cohort had an elevated risk of CRC-specific mortality (HR, 1.49; 95% confidence interval [CI], 1.07 to 1.90) and overall mortality (HR, 1.43; 95% CI, 1.09 to 1.84) compared to reference cohort after multiple adjustment. Stratified analyses showed higher mortality risk among women (HR, 1.87; 95% CI, 1.04 to 2.27) and specific components of MetSyn. Notably, the number of MetSyn components was observed to be significantly related to CRC prognosis.Conclusion Our findings supported that multi-morbidities of MetSyn associated with elevated death risk after CRC. MetSyn should be considered as an integrated medical condition more than its components in CRC prognostic management.
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A Comprehensive Study of Multi-Scheduling Schemes Performance
Xiao Chen,Lei Jiang,Jin Wang 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.9
Today distributed server systems have been widely used in many areas because they enhance the computing power while being cost-effective and more efficient. Meanwhile, efficient multi-scheduling schemes are employed to optimize the task assignment process. This paper closely explored the performance of multi-scheduling schemes through computer simulation. The research was started regarding the simulation of a novel scheduling policy (Task Assignment by Guessing Size) associated with other two previous task assignment policies (Random and JSQ). The multi-scheduling schemes involve two types: Random-TAGS scheme and JSQ-TAGS scheme. To facilitate the performance, computer simulation is applied to perform the statistical measurements. The findings were, indeed, very interesting, showing that the multi-scheduling scheme obtains better performance than single scheduling strategy scheme under heavy-tail distributed computing environment. Furthermore, JSQ-TAGS scheme is more efficient and stable in contrast to Random-TAGS scheme. The paper finally concludes by summarizing the findings from the simulation and suggesting a wider study be undertaking, in order to explore the performance of multi-scheduling schemes in more depth.
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