|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effectiveness of predicting tunneling-induced ground settlements using machine learning methods with small datasets显示文摘Prediction of tunneling-induced ground settlements is an essential task,particularly for tunneling in urban settings.Ground settlements should be limited within a tolerable threshold to avoid damages to aboveground structures.Machine learning(ML)methods are becoming popular in many fields,including tunneling and underground excavations,as a powerful learning and predicting technique.However,the available datasets collected from a tunneling project are usually small from the perspective of applying ML methods.Can ML algorithms effectively predict tunneling-induced ground settlements when the available datasets are small?In this study,seven ML methods are utilized to predict tunneling-induced ground settlement using 14 contributing factors measured before or during tunnel excavation.These methods include multiple linear regression(MLR),decision tree(DT),random forest(RF),gradient boosting(GB),support vector regression(SVR),back-propagation neural network(BPNN),and permutation importancebased BPNN(PI-BPNN)models.All methods except BPNN and PI-BPNN are shallow-structure ML methods.The effectiveness of these seven ML approaches on small datasets is evaluated using model accuracy and stability.The model accuracy is measured by the coefficient of determination(R2)of training and testing datasets,and the stability of a learning algorithm indicates robust predictive performance.Also,the quantile error(QE)criterion is introduced to assess model predictive performance considering underpredictions and overpredictions.Our study reveals that the RF algorithm outperforms all the other models with the highest model prediction accuracy(0.9)and stability(3.0210^(-27)).Deep-structure ML models do not perform well for small datasets with relatively low model accuracy(0.59)and stability(5.76).The PI-BPNN architecture is proposed and designed for small datasets,showing better performance than typical BPNN.Six important contributing factors of ground settlements are identified,including tunnel depth,the distance between tunnel face and surface monitoring points(DTM),weighted average soil compressibility modulus(ACM),grouting pressure,penetrating rate and thrust force. | Linan Liu Wendy Zhou Marte Gutierrez | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，4： | 5 |
| 2 | Determination of the metastable zone and induction time of thiourea for cooling crystallization显示文摘The solubility,metastable zone width(MSZW),and induction time of thiourea for cooling crystallization were experimentally determined in the temperature range of 283-323 K.The solubility data could be well described by the Apelblat equation model as lnx=-99.55+1071.66/T+16.27 lnT.The determinations of the effects of various stirring and cooling rates indicated that the MSZW increased with increasing and decreasing cooling and stirring rates,respectively.Furthermore,the induction times at various temperatures and supersaturation ratios were also measured.The results indicated that homogeneous nucleation could occur at high supersaturation,whereas heterogeneous nucleation was more likely to occur at low supersaturation.Based on the classical nucleation theory and induction period data,the calculated solid-liquid interfacial tensions of thiourea in deionized water at 302.46 and 312.58 K were 2.86 and 2.94 mJ·m^(-2),respectively. | Tong Zhou Chunzhao Tu Ya Sun Linan Ji Chuangxian Bian Xiaohua Lu Changsong Wang | 2021 | Chinese Journal of Chemical Engineering2021，34，3： | 3 |
| 3 | Systemic PCD occurs in TMV-tomato interaction显示文摘In hypersensitive response (HR), programmed cell death (PCD) is reported as a powerful defense mechanism in plant immune responses to pathogen. However, little is known about the PCD in sys-temic acquired resistance (SAR). Using tobacco mosaic virus (TMV) to infect the tomato (Lycopersicon esculentum cv. Jiafen 16) we found that localized TMV-infection could induce cell death in the uninoculated parts of the tomatoes, where the enzyme-linked immunosorbent assay (ELISA) showed no spreading virus. The biological and molecular characterization of this cell death was shown as fol-lowing: chromatin condensed and formed peripheral conglomeration in nuclei; cell nucleus were TUNEL positive labeled; genomic DNA was fragmented and showed DNA laddering; mitochondria and chloroplast were disrupted; tonoplast and plasma membrane were shrunk and degradated. These re-sults suggested that with an absence of TMV spread, the local TMV-infection on certain tomato leaves could induce systemic PCD in the root-tips, stem-apices and uninoculated leaves. The systemic PCD has various initiation and synchronization in such tissues and is distinct in inducement and exhibition from HR-PCD and SAR. | ZHOU ShuMin, LIU WenNa, KONG LinAn & WANG Mao College of Biological Sciences, China Agriculture University, Beijing 100094, China | 2008 | Science China(Life Sciences)2008，51，11： | 1 |
| 4 | Fotemustine-based therapy in combination with rituximab as a first-line induction chemotherapy followed by WBRT for newly diagnosed primary central nervous system lymphoma: a prospective phase II trial显示文摘Objective:This study aimed to evaluate the safety,efficacy,and feasibility of the rituximab,fotemustine,pemetrexed,and dexamethasone(R-FPD)regimen followed by whole-brain radiotherapy(WBRT)for patients with primary central nervous system lymphoma(PCNSL).Methods:A prospective,single-center phase II clinical trial was conducted.Patients with PCNSL newly diagnosed at the First Affiliated Hospital of Zhengzhou University between July 2018 and July 2020 were studied.The R-FPD regimen consisted of rituximab(375 mg/m2 i.v.on D0),fotemustine(100 mg/m2 i.v.on D1),pemetrexed(600 mg/m2 i.v.on D1),and dexamethasone(40 mg i.v.on D1-5).Patients 60 years or younger who showed a complete response(CR)were treated with 23.4 Gy of WBRT after the end of chemotherapy;those older than 60 years with CR were treated with a wait-and-see approach;and those who did not show CR after the 4th cycle of chemotherapy were given salvage WBRT 30 Gy+local tumor field irradiation up to 45 Gy,regardless of age.Results:A total of 30 patients were included.After 2 cycles,the objective response rate(ORR)was 96.5%(28/29,1 CR,27 PR,0 SD,and 1 PD).After 4 cycles,the ORR was 73.1%(19/26,11 CR,8 PR,4 SD,and 3 PD).After WBRT,the ORR was 90.9%(10/11,7 CR,3 PR,and 1 SD).The grade III and IV toxicity responses were mainly leukopenia(20.0%),thrombocytopenia(23.3%),and anemia(10.0%).Conclusions:Fotemustine-based therapy in combination with rituximab chemotherapy followed by WBRT can improve outcomes,providing ORR benefits and favorable tolerability in patients newly diagnosed with PCNSL. | Jingjing Wu Fenghua Gao Wenhua Wang Xudong Zhang Meng Dong Lei Zhang Xin Li Ling Li Zhenchang Sun Xinhua Wang Xiaorui Fu Linan Zhu Mengjie Ding Songtao Niu Zhaoming Li Yu Chang Feifei Nan Jiaqian Yan Hui Yu Xiaolong Wu Zhiyuan Zhou Jieming Zhang Mingzhi Zhang | 2022 | Cancer Biology & Medicine2022，19，7： | 1 |
| 5 | Effects of Plant Spacing,Row Spacing and Seedling Number Allocation on the Growth Dynamics of Different Populations of Two Types of Rice Varieties显示文摘[Objectives]This study was conducted to construct high-yielding,high-quality,and high-light-efficiency population structures of different types of rice varieties.[Methods]The effects of plant spacing,row spacing and seedling number allocation on stems and tillers,leaf area and dynamic traits of high-yielding rice populations(more than 9750 kg/hm^(2))and low-yielding populations(less than 9750 kg/hm^(2))were studied by two kinds of representative rice varieties with different tiller ability and panicle sizes in cold regions.[Results]Decreasing the plant and row spacing and increasing the number of planted seedlings per hole advanced the heading date and made the number of stems and tillers in the population increase.The impact on the super rice variety with fewer tillers and heavier panicles was greater than that of conventional variety with more tillers and lighter panicles.The stems and tillers of the high-yielding high-quality populations grew steadily in the early stage of development,until an appropriate number of panicles was reached at the critical leaf age for productive tillers(June 25),and the peak seedlings should appear in the jointing stage(July 9)with a small number(that value of Longjing 21,the super rice variety with fewer tillers and heavier panicles,was about 1.2 times the expected panicle number,and that of the conventional variety with more tillers and lighter panicles,Kongyu 131,was about 1.1 times the expected panicle number).The populations gradually declined since then,until reaching an appropriate number of panicles at the heading stage.The high-yielding high-quality populations had a higher leaf area index at the heading stage.The value of Longjing 21,the super rice variety with fewer tiller and heavier panicles,reached about 6.0,and that of Kongyu 131,the conventional variety with more tillers and lighter panicles,reached about 4.5.The values decreased thereafter.At the maturation stage,the leaf area index of Longjing 21 remained above 2.5,and that of Kongyu 131 remained above 2.0.[Conclusions]This study has an important guiding role and significance for their high-yielding and high-quality supporting cultivation in cold regions. | Jingfang XUE Guangshan ZHAO Shuqiang CHEN Xiaodong DU Limin YANG Haixin ZHAO Yongsheng CAI Tong ZHOU Linan WANG Mingxu ZHOU | 2021 | Agricultural Biotechnology2021，10，2： | 1 |
| 6 | Clamping effect driven design and fabrication of new infrared birefringent materials with large optical anisotropy显示文摘Infrared(IR)birefringent materials with large optical anisotropy and wide transparency range are important for efficient light manipulation in various IR optical devices.Herein,two new IR birefringent materials AMgGeSe_(3)(A=Li,Na)with large optical anisotropy were rationally designed by a rigid octahedron and flexible dimer combined strategy and fabricated in experiment.The introduction of rigid[LiSe_(6)]/[NaSe_(6)]and[MgSe_(6)]octahedra effectively regulates the geometry and arrangement of the flexible[Ge2Se6]dimers,resulting in the birefringence as large as 0.334@1,064 nm in LiMgGeSe_(3) and 0.445@1,064 nm(the largest one in the reported[Ge_(2)Se_(6)]dimer-contained selenides)in NaMgGeSe_(3).Density functional theory(DFT)calculations and statistical analyses highlight the influence of polarizability anisotropy,density,arrangement of units,as well as layer distance on birefringence.The results indicate that AMgGeSe_(3)(A=Li,Na)crystals are the promising IR birefringent materials and it gives an insight into the exploration of new IR birefringent materials with large birefringence based on the clamping effect from rigid groups. | Linan Wang Chenchen Tu Hongbo Gao Jiazheng Zhou Hongshan Wang Zhihua Yang Shilie Pan Junjie Li | 2023 | Science China Chemistry2023，66，4： | 0 |
| 7 | Experimental Study on Water Saving of Large-scale Mechanized Paddy Field Production Process in Heilongjiang Province显示文摘In order to clarify the water-saving technologies and standards in large-scale mechanized production of paddy fields, the water-saving effects and cost-benefit situations of paddy field steeping, seedling transplanting and different land preparation methods were studied. The results showed that the suitable water layer height for the closing period of mechanized operation was 10 cm, which could save water, facilitate weed control, and lead to better effect and the highest yield. The treatment with a water layer height of 1 cm(Huadashui) for the seedling planting operation achieved better quality of seedling transplanting, lower vacancy rate and higher yield and was water-saving. From the perspective of saving water and taking into account the cost of land preparation, the method of steeping and beating the field was better than the method of plowing in autumn and rotary tillage and harrowing in spring, but it was very prone to lodging. From the perspective of high yield creation, the method of plowing in autumn and rotary tillage and harrowing in spring was significantly better than the method of steeping and beating the field. In order to reduce the cost of land preparation, it is recommended to change the way of plowing in autumn and rotary tillage and hallowing in spring to plowing in autumn and rotary tillage in spring or plowing and hallowing in spring to reduce the cost of one time of rotary tillage, and to simultaneously realize deeper plough layer, which is conducive to preventing lodging and obtaining high yield. | Jingfang XUE Shuqiang CHEN Yongsheng CAI Xiaodong DU Limin YANG Haixin ZHAO Tong ZHOU Mingxu ZHOU Linan WANG | 2021 | Agricultural Biotechnology2021，10，1： | 0 |
| 8 | Pay Attention to Metabolic Syndrome in Kidney Transplant Recipients显示文摘 | Linan Zhou Yuxin Wang | 2011 | 器官移植内科学杂志2011，6，2： | 0 |
| 9 | Characterization of tin(Ⅱ) sulfide defects/vacancies and correlation with their photocurrent显示文摘 | Mingyang Liu Luqing Wang Linan Zhou Sidong Lei Jarin Joyner Yingchao Yang Robert Vajtai Pulickel Ajayan Boris I. Yakobson Pol Spanos | 2017 | Nano Research2017，10，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员