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| 1 | Model updating for real time dynamic substructures based on UKF algorithm显示文摘Combining the advantages of numerical simulation with experimental testing,real-time dynamic substructure(RTDS)testing provides a new experimental method for the investigation of engineered structures.However,not all unmodeled parts can be physically tested,as testing is often limited by the capacity of the test facility.Model updating is a good option to improve the modeling accuracy for numerical substructures in RTDS.In this study,a model updating method is introduced,which has great performance in describing this nonlinearity.In order to determine the optimal parameters in this model,an Unscented Kalman Filter(UKF)-based algorithm was applied to extract the knowledge contained in the sensors data.All the parameters that need to be identified are listed as the extended state variables,and the identification was achieved via the step-by-step state prediction and state update process.Effectiveness of the proposed method was verified through a group of experimental data,and results showed good agreement.Furthermore,the proposed method was compared with the Extended Kalman Filter(EKF)-based method,and better accuracy was easily found.The proposed parameter identification method has great applicability for structural objects with nonlinear behaviors and could be extended to research in other engineering fields. | Su Tingli Tang Zhenyun Peng Lingyun Bai Yuting Jin Xuebo Kong Jianlei | 2020 | Earthquake Engineering and Engineering Vibration2020，19，2： | 2 |
| 2 | Spontaneous immunomodulation and regulation of angiogenesis and osteogenesis by Sr/Cu-borosilicate glass (BSG) bone cement to repair critical bone defects显示文摘Injectable bone biomaterials like bone cement should be designed and fabricated with certain biological criteria,which include:1)recruitment and polarization of the macrophages from M1(pro-inflammatory)to M2(anti-inflammatory)phenotype,2)enhance vascularization,and 3)activate osteogenic differentiation of bone marrow-derived stem cells to promote bone healing.So far,no injectable biomaterials could spontaneously regulate the entire bone healing process that involves inflammation,angiogenesis,and osteogenesis.Therefore,in this study,we designed bone cement comprised of strontium and copper-incorporated borosilicate glass(Sr/Cu-BSG)in the liquid phase of chitosan to modulate bone healing.In vitro studies showed that the controlled release of Sr and Cu ions up-regulated anti-inflammatory genes(IL-1Ra and TGF-β1)while down-regulating pro-inflammatory genes(IL-1βand IL-6)in macrophages at 3 days.Sr and Cu ions also increased the expressions of angiogenic genes(VEGF and bFGF)in HUVECs at 5 days and osteogenic genes(Runx-2,OCN,and OPN)in hBMSCs at 7,14,and 21 days.5Sr3Cu-BSG bone cement exhibited the best anti-inflammatory,angiogenic,and osteogenic properties among the bone cement groups with different Sr and Cu ratios.Short-term and long-term implantation of Sr/Cu-BSGs in femoral condylar bone defects of rats and rabbits confirmed the in vitro results,where the degradation rate of Sr/Cu-BSG matched the bone healing rate.Similar to in vitro,the 5Sr3Cu-BSG group also showed the highest bone formation in vivo.Excellent physical and chemical properties,along with its bone repairing ability,make the Sr/Cu-BSG bone cement a good candidate biomaterial for treating bone defects. | Shuaijie Li Liyan Zhang Chunyu Liu Jua Kim Kun Su Tingli Chen Limin Zhao Xiaomei Lu Hao Zhang Yinglin Cui Xu Cui Feng Yuan Haobo Pan | 2023 | Bioactive Materials2023，，5： | 1 |
| 3 | A deep network prediction model for heavy metal cadmium in the rice supply chain显示文摘Cadmium and its compounds are currently known as Class I carcinogens,and excessive intake can cause severe health damage to humans.Rice has a strong absorption effect on cadmium,and rice products with excessive cadmium content have caused several significant public health contamination incidents.It is essential to predict the development trend of cadmium hazards in the rice supply chain so that countermeasures can be formulated to reduce the hazards.This paper proposes a deep prediction model for cadmium hazards in the rice supply chain based on the regularization method.Firstly,a long and short-term memory network is used to build the depth prediction model by using the regularization method,and the noise penalty term is added to reduce the model fitting to the noise and prevent the over-fitting caused by the noise.Finally,the optimization of the model hyperparameters was carried out using a Bayesian optimization approach to develop the prediction performance.Then,early warning system for prediction of cadmium hazards in the rice supply chain is built based on the deep prediction model proposed in this paper with SOA architecture,including data resource,business logic,and application service layers.The proposed model performs well on an actual data set of cadmium hazards in the rice supply chain and fits the data well. | Xuebo Jin Jiashuai Zhang Xiaoyi Wang Xin Zhang Tianyang Guo Ce Shi Tingli Su Jianlei Kong Yuting Bai | 2021 | Journal of Future Foods2021，1，2： | 0 |
| 4 | Characteristics of the site selection and the layout of the Great Wall of the Ming dynasty from a military perspective:Xiaohekou section as an example显示文摘As a great engineering work for the purpose of military defense in the time of Cold Weapon,the Great Wall’s military function is of the most importance.This study takes the Xiaohekou section of the Great Wall in Mount.Zhuizi constructed in the Ming Dynasty in Liaoning Province as the research object.In addition,this study discusses the relationship between the terrain and its site selection and layout from the military perspective.This research analyzes the trend and the grade of the terrain,the distance,the view range,and the effective firing range between the main body and the subsidiary establishments through GIS software.The GPS data collected in the on-site investigation were used,applying the theories of military geomorphology.Furthermore,this study concludes the characteristics of the site selection and the layouts of the city walls,the hollow watchtowers,the M a ria n s,and the signal towers on different terrains and the reasons behind. | Yang Shen Qingshang Su Tingli Jia Xiaodi Zhou | 2020 | Frontiers of Architectural Research2020，9，3： | 0 |
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