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| 1 | Effect of Zn addition on microstructure and mechanical properties of an Al–Mg–Si alloy显示文摘In the present work, an Al–0.66Mg–0.85Si–0.2Cu alloy with Zn addition was investigated by electron back scattering diffraction(EBSD), high resolution electron microscopy(HREM), tensile and Erichsen tests. The mechanical properties of the alloy after pre-aging met the standards of sheet forming. After paint baking, the yield strength of the alloy was improved apparently. GP(Ⅱ) zones and η'phases were formed during aging process due to Zn addition. With the precipitation of GP zones, β″ phases, GP(Ⅱ) zones and η'phases, the alloys displayed excellent mechanical properties. | Lizhen Yan Yongan Zhang Xiwu Li Zhihui Li Feng Wang Hongwei Liu Baiqing Xiong | 2014 | Progress in Natural Science:Materials International2014，24，2： | 13 |
| 2 | The effect of Scuteilaria baicalensis stem-leaf flavonoids on spatial learning and memory in chronic cerebral ischemia-induced vascular dementia of rats显示文摘Flavonoids 被显示了改进认知功能并且推迟痴呆前进。然而,内在的机制留下逃犯。在现在的学习,我们检验了从 S 提取的黄芩 baicalensis 茎叶总数 flavonoids (SSTF ) 的效果。在脉管的痴呆(VaD ) 的空间学习和记忆上的 baicalensis Georgi 老鼠模型并且探索了它的分子的机制。VaD 老鼠被普通颈动脉动脉的永久双边的吸藏开发。在恢复以后的七天, VaD 老鼠与 SSTF 的 50 或 100 mg/kg 被对待 60 天。空间学习和记忆在莫利斯舞水迷宫(MWM ) 被评估测试。字形物 hyperphosphorylation 和相关蛋白质 kinases 或磷酸酶的层次被西方的污点分析检验。在 VaD 老鼠,在 100 mg/kg 的 SSTF 处理显著地在在 MWM 测试训练试用减少了逃跑潜伏。在探针试用, SSTF 治疗在目标象限增加了寻找的时间和旅行距离。SSTF 处理在 VaD 老鼠在外皮和马头鱼尾的怪兽禁止了字形物 phosphorylation。同时, SSTF 减少了肝糖 synthase kinase 的活动 3 并且 cyclin 依赖的 kinase 5 在 VaD 老鼠。相反, SSTF 处理在 VaD 老鼠增加了蛋白质磷酸酶 2A 子单元 B 的水平。SSTF 处理显著地在 VaD 老鼠改进了空间认知。我们的结果建议 SSTF 可以通过在击以后协调 kinases 和磷酸酶的活动减轻 tau-hyperphosphorylation-induced neurotoxicity。SSTF 可以为 VaD 被开发进有希望的新奇治疗学。 | Yanjing Cao Lizhen Liang Jian Xu Jiali Wu Yongxing Yan Ping Lin Qiang Chen Fengming Zheng Qin Wang Qian Ren Zengmei Gou Yifeng Du | 2016 | Acta Biochimica et Biophysica Sinica2016，48，5： | 10 |
| 3 | Comparative study of the mechanical properties,micro-structure,and composition of the cranial and beak bones of the great spotted woodpecker and the lark bird显示文摘Woodpeckers are well able to resist head injury during repeated high speed impacts at 6-7 m s-1 with decelerations up to 1000 g.This study was designed to compare the mechanical properties,microstructures and compositions of cranial bone and beak bone of great spotted woodpecker(Dendrocopos major) and the Mongolian sky lark(Melanocorypha mongolica).Microstructures were observed using micro-computed tomography and scanning electron microscopy and their compositions were characterized by X-ray powder diffraction and Fourier-transform infrared spectroscopy.Under high stress,the cranial bone and the beak of the woodpecker exhibited distinctive mechanical features,which were associated with differences in micro-structure and composition,compared with those of the lark.Evolutionary optimization of bone micro-structure has enabled functional adaptation to the woodpecker's specific lifestyle.Its characteristic micro-structure efficiently avoids head impact injury and may provide potential clues to the prevention of brain injury using bio-inspired designs of shock-absorbing materials. | WANG LiZhen ZHANG HongQuan FAN YuBo | 2011 | Science China(Life Sciences)2011，54，11： | 9 |
| 4 | Non-covalently Functionalized Graphene Oxide-Based Coating to Enhance Thermal Stability and Flame Retardancy of PVA Film显示文摘The synergistic effect of conventional flame-retardant elements and graphene has received extensive attention in the development of a new class of flame retardants. Compared to covalent modification, the noncovalent strategy is simpler and expeditious and entirely preserves the original quality of graphene. Thus, non-covalently functionalized graphene oxide(FGO) with a phosphorus–nitrogen compound was successfully prepared via a one-pot process in this study. Polyethyleneimine and FGO were alternatively deposited on the surface of a poly(vinyl alcohol)(PVA) film via layer-by-layer assembly driven by electrostatic interaction, imparting excellent flame retardancy to the coated PVA film. The multilayer FGO-based coating formed a protective shield encapsulating the PVA matrix, effectively blocking the transfer of heat and mass during combustion. The coated PVA has a higher initial decomposition temperature of about 260 °C and a nearly 60% reduction in total heat release than neat PVA does. Our results may have a promising prospect for flame-retardant polymers. | Wenhua Chen Pengju Liu Lizhen Min Yiming Zhou Yuan Liu Qi Wang Wenfeng Duan | 2018 | Nano-Micro Letters2018，10，3： | 8 |
| 5 | Coactive design of explainable agent-based task planning and deep reinforcement learning for human-UAVs teamwork显示文摘Unmanned Aerial Vehicles(UAVs)are useful in dangerous and dynamic tasks such as search-and-rescue,forest surveillance,and anti-terrorist operations.These tasks can be solved better through the collaboration of multiple UAVs under human supervision.However,it is still difficult for human to monitor,understand,predict and control the behaviors of the UAVs due to the task complexity as well as the black-box machine learning and planning algorithms being used.In this paper,the coactive design method is adopted to analyze the cognitive capabilities required for the tasks and design the interdependencies among the heterogeneous teammates of UAVs or human for coherent collaboration.Then,an agent-based task planner is proposed to automatically decompose a complex task into a sequence of explainable subtasks under constrains of resources,execution time,social rules and costs.Besides,a deep reinforcement learning approach is designed for the UAVs to learn optimal policies of a flocking behavior and a path planner that are easy for the human operator to understand and control.Finally,a mixed-initiative action selection mechanism is used to evaluate the learned policies as well as the human’s decisions.Experimental results demonstrate the effectiveness of the proposed methods. | Chang WANG Lizhen WU Chao YAN Zhichao WANG Han LONG Chao YU | 2020 | Chinese Journal of Aeronautics2020，33，11： | 8 |
| 6 | Combined application of a straw layer and flue gas desulphurization gypsum to reduce soil salinity and alkalinity显示文摘Burying a straw layer and applying flue gas desulphurization(FGD)gypsum are effective practices to ameliorate soil salinization or alkalization and to increase crop yield;however,little information exists on the effects of such integration in saline-alkali soils.A soil column experiment was conducted to investigate the effects of a straw layer plus FGD gypsum on soil salinity and alkalinity.We placed a straw layer(5 cm thick)at a depth of 30 cm and mixed FGD gypsum into the 0–20 cm soil layer at application rates of 7.5,15.0,22.5,and 30.0 t ha^-1,with no straw layer and FGD gypsum as a control(CK).The soil water content in the 0–30 cm soil layer was significantly higher(>7.8%)in the treated soil profiles after infiltration than in the CK,but decreased after evaporation.The electrical conductivity(EC)of the 10–30 cm soil layer was 230.2%and 104.9%higher in the treated soil profiles than in the CK after infiltration and evaporation,respectively,and increased with increasing rates of FGD gypsum application,with Ca^2+and SO4^2-being the main dissolved salts.Compared to those in the CK,the concentrations of Na^+,Cl^-,and HCO3-decreased in the treated soil profiles at depths above 55 cm,but the other soluble ions increased,after infiltration.A similar trend occurred after evaporation for all soluble ions except for HCO3-.The p H and exchangeable sodium percentage in the treated soil profiles were significantly lower than those in the CK over the entire profile,and decreased with increasing FGD gypsum application rates.Therefore,the incorporation of a straw layer plus FGD gypsum can reduce salinity and alkalinity,but the quantity of FGD gypsum should be controlled in saline-alkali soils. | Yonggan ZHAO Yan LI Shujuan WANG Jing WANG Lizhen XU | 2020 | Pedosphere2020，30，2： | 7 |
| 7 | Solubility and metastable zone width measurement of 3,4-bis (3-nitrofurazan-4-yl) furoxan (DNTF) in ethanol + water显示文摘The solubility and supersolubility of 3,4-bis(3-nitrofurazan-4-yl)furoxan(DNTF) in ethanol + water at different operation were determined by laser monitoring system under atmospheric pressure to study the metastable zone width(MSZW). The modified Apelblat equation was adopted to correlate the experimental solubility data, and the correlation result showed perfect consistent with the experimental data. The standard dissolution enthalpy, standard dissolution entropy and Gibbs energy were calculated according to the experimental solubility data. The effect of the cooling rate, stirring rate, temperature and the concentration of ethanol + water on the MSZW was studied. It was found that the MSZW of DNTF increased with the increasing cooling rate, decreasing temperature, decreasing stirring rate and decreasing ratio of water. And the apparent nucleation order of DNTF in ethanol + water was calculated by the relationship between the cooling rate and the MSZW. | Lizhen Chen Liang Song Guanchao Lan Jianlong Wang | 2017 | Chinese Journal of Chemical Engineering2017，25，5： | 7 |
| 8 | A Novel Feature-based Method for Sentiment Analysis of Chinese Product Reviews显示文摘Sentiment analysis of online reviews and other user generated content is an important research problem for its wide range of applications.In this paper,we propose a feature-based vector model and a novel weighting algorithm for sentiment analysis of Chinese product reviews.Specifically,an opinionated document is modeled by a set of feature-based vectors and corresponding weights.Different from previous work,our model considers modifying relationships between words and contains rich sentiment strength descriptions which are represented by adverbs of degree and punctuations.Dependency parsing is applied to construct the feature vectors.A novel feature weighting algorithm is proposed for supervised sentiment classification based on rich sentiment strength related information.The experimental results demonstrate the effectiveness of the proposed method compared with a state of the art method using term level weighting algorithms. | LIU Lizhen SONG Wei WANG Hanshi LI Chuchu LU Jingli | 2014 | China Communications2014，11，3： | 5 |
| 9 | High-conductivity free-standing Li_(6)PS_(5)Cl/poly(vinylidene difluoride)composite solid electrolyte membranes for lithium-ion batteries显示文摘Bulk-type all-solid-state batteries(ASSBs)using sulfide solid electrolyte are considered as a promising alternative to commercial lithium-ion batteries owing to their high energy density and safety.However,cell energy density is often comparatively low due to use of a thick solid electrolyte separator and a lithium alloy as anode.For achieving high-performance ASSBs,creating a thin free-standing electrolyte with high-conductivity and good cycling stability against lithium anode is essential.In this work,we present Li_(6)PS_(5)Cl/poly(vinylidene difluoride)(LPSCl/PVDF)composite electrolytes prepared by a slurry method.The influence of the PVDF content on the microstructure,morphology,ionic conductivity and activation energy of the LPSCl/PVDF electrolytes is systematically investigated.Free-standing LPSCl/PVDF membranes with a thickness of 100-120 mm and a high ionic conductivity of about 1·10^(-3) S cm^(-1) at 25℃ are obtained.After adding PVDF to the LPSCl electrolyte,the cycling stability of the LPSCl electrolyte against lithium metal improves significantly.Therefore,LPSCl/PVDF composite electrolytes are promising candidates to be used in ASSBs. | Shuo Wang Xue Zhang Sijie Liu Chengzhou Xin Chuanjiao Xue Felix Richter Liangliang Li Lizhen Fan Yuanhua Lin Yang Shen Jurgen Janek Ce-Wen Nan | 2020 | Journal of Materiomics2020，6，1： | 5 |
| 10 | A Hierarchically Porous Metal-Organic Framework from Semirigid Ligand for Gas Adsorption显示文摘层次地多孔的材料在便于集体运输和吸附和分离过程的改善效率起一个重要作用。在这份报纸,新策略被建议认识到一个层次地多孔的金属器官的框架([Cu 2(OH)(L)]·(DMF)0.8(FJU-11, H 3L=3,5-(4-carboxybenzyloxy ) 安息香的酸, DMF=N, N-dimethylformamide ) 经由使用半硬的多羧基的酸。有趣地, FJU-11 向公司 2 拥有大吸附能力和小 isosteric 热。为 FJU-11 的列突破实验在烟道气体的分离加亮它的潜在的申请。 | Lizhen Liu Yingxiang Ye Zizhu Yao Liuqin Zhang Ziyin Li Lihua Wang Xiuling Ma Qian-Huo Chen Zhangjing Zhang Shengchang Xiang | 2016 | Chinese Journal of Chemistry2016，34，2： | 4 |
| 11 | LIGHT INTERCEPTION AND USE EFFICIENCY DIFFER WITH MAIZE PLANT DENSITY IN MAIZE-PEANUT INTERCROPPING显示文摘Intercropping increases crop yields by optimizing light interception and/or use efficiency.Although intercropping combinations and metrics have been reported,the effects of plant density on light use are not well documented.Here,we examined the light interception and use efficiency in maize-peanut intercropping with different maize plant densities in two row configurations in semiarid dryland agriculture over a two-year period.The field experiment comprised four cropping systems,i.e.,monocropped maize,monocropped peanut,maize-peanut intercropping with two rows of maize and four rows of peanut,intercropping with four rows of maize and four rows of peanut,and three maize plant densities(3.0,4.5 and 6.0 plants m^(-1) row)in both monocropped and intercropping maize.The mean total light interception in intercropping across years and densities was 779 MJ·m^(-2),5.5%higher than in monocropped peanut(737 MJ·m^(-2))and 7.6%lower than in monocropped maize(843 MJ·m^(-2)).Increasing maize density increased light interception in monocropped maize but did not affect the total light interception in the intercrops.Across years the LUE of maize was 2.9 g·MJ–1 and was not affected by cropping system but increased with maize plant density.The LUE of peanut was enhanced in intercropping,especially in a wetter year.The yield advantage of maize-peanut intercropping resulted mainly from the LUE of peanut.These results will help to optimize agronomic management and system design and provide evidence for system level light use efficiency in intercropping. | Qi WANG Zhanxiang SUN Wei BAI Dongsheng ZHANG Yue ZHANG Ruonan WANG Wopke VAN DER WERF Jochem B.EVERS Tjeerd-Jan STOMPH Jianping GUO Lizhen ZHANG | 2021 | Frontiers of Agricultural Science and Engineering2021，8，3： | 4 |
| 12 | Diagonal-symmetrical and Midline-symmetrical Unit Cells with Same Porosity for Bone Implant: Mechanical Properties Evaluation显示文摘In this study, mechanical properties of bionic porous structures with diagonal-symmetrical and midline-symmetrical unit cells were studied when the porosities were same. Three typical unit cells (Diamond (DO), Rhombic Dodecahedron (RD), and Octet Truss (OT)) were selected, in which DO has diagonal-symmetrical shape, while RD and OT share midline-symmetrical structure. Based on the same porosity, corresponding models were designed, and Ti6Al4V samples were manufactured by electron beam melting. Then, using Mechanical Properties Testing (MPT) and Finite Element Analysis (FEA) methodologies, mechanical properties and transmissions of different porous structures were evaluated. Besides, composition and details before and after printing were analyzed with Energy Dispersive Spectrometer (EDS), X-ray diffraction (XRD) and Scanning Electron Microscope (SEM). MPT results showed that midline-symmetrical shape would have superior compressive performance than diagonal-symmetrical shape, but opposite trend for the torsion performance, which were in line with FEA prediction. Furthermore, effective modulus of DO, RD and OT were 2.59 GPa, 4.89 GPa, and 1.77 GPa, approximating the mechanical properties of human bones. Additionally, manufacturing defects and discrepancies between FEA and MPT were found. This study would provide great helps for unit cell selection and initial mechanical properties matching for optimum bone implants. | Jian Li Diansheng Chen Yingying Zhang Yan Yao Zhongjun Mo Lizhen Wang Yubo Fan | 2019 | Journal of Bionic Engineering2019，16，3： | 4 |
| 13 | Estimation of extreme wind speed in SCS and NWP by a non-stationary model显示文摘In offshore engineering design, it is considerably significant to have an adequately accurate estimation of marine environmental parameters, in particular, the extreme wind speed of tropical cyclone(TC) with different return periods to guarantee the safety in projected operating life period. Based on the 71-year(1945–2015) TC data in the Northwest Pacific(NWP) by the Joint Typhoon Warning Center(JTWC) of US, a notable growth of the TC intensity is observed in the context of climate change. The fact implies that the traditional stationary model might be incapable of predicting parameters in the extreme events.Therefore, a non-stationary model is proposed in this study to estimate extreme wind speed in the South China Sea(SCS) and NWP. We find that the extreme wind speeds of different return periods exhibit an evident enhancement trend, for instance, the extreme wind speeds with different return periods by nonstationary model are 4.1%–4.4% higher than stationary ones in SCS. Also, the spatial distribution of extreme wind speed in NWP has been examined with the same methodology by dividing the west sea areas of the NWP 0°–45°N, 105°E–130°E into 45 subareas of 5°× 5°, where oil and gas resources are abundant.Similarly, remarkable spacial in-homogeneity in the extreme wind speed is seen in this area: the extreme wind speed with 50-year return period in the subarea(15°N–20°N, 115°E–120°E) of Zhongsha and Dongsha Islands is 73.8 m/s, while that in the subarea of Yellow Sea(30°N–35°N, 120°E–125°E) is only47.1 m/s. As a result, the present study demonstrates that non-stationary and in-homogeneous effects should be taken into consideration in the estimation of extreme wind speed. | Lizhen Wang Jiachun Li | 2016 | Theoretical & Applied Mechanics Letters2016，6，3： | 4 |
| 14 | Top-k probabilistic prevalent co-location mining in spatially uncertain data sets显示文摘 | Lizhen WANG Jun HAN Hongmei CHEN Junli LU | 2016 | Frontiers of Computer Science2016，10，3： | 4 |
| 15 | Multi-Domain Collaborative Recommendation with Feature Selection显示文摘Collaborative f iltering, as one of the most popular techniques, plays an important role in recommendation systems. However,when the user-item rating matrix is sparse,its performance will be degenerate. Recently,domain-specific recommendation approaches have been developed to address this problem.The basic idea is to partition the users and items into overlapping domains, and then perform recommendation in each domain independently. Here, a domain means a group of users having similar preference to a group of products. However, these domain-specific methods consisting of two sequential steps ignore the mutual benefi t of domain segmentation and recommendation. Hence, a unified framework is presented to simultaneously realize recommendation and make use of the domain information underlying the rating matrix in this paper. Based on matrix factorization,the proposed model learns both user preferences of multiple domains and preference selection vectors to select relevant features for each group of products. Besides, local context information is utilized from the user-item rating matrix to enhance the new framework.Experimental results on two widely used datasets, e.g., Ciao and Epinions, demonstrate the effectiveness of our proposed model. | Lizhen Liu Junjun Cui Wei Song Hanshi Wang | 2017 | China Communications2017，14，8： | 3 |
| 16 | Biodegradable magnesium pins enhanced the healing of transverse patellar fracture in rabbits显示文摘Displaced fractures of patella often require open reduction surgery and internal fixation to restore the extensor continuity and articular congruity.Fracture fixation with biodegradable magnesium(Mg)pins enhanced fracture healing.We hypothesized that fixation with Mg pins and their degradation over time would enhance healing of patellar fracture radiologically,mechanically,and histologically.Transverse patellar fracture surgery was performed on thirty-two 18-weeks old female New Zealand White Rabbits.The fracture was fixed with a pin made of stainless steel or pure Mg,and a figure-of-eight stainless steel band wire.Samples were harvested at week 8 or 12,and assessed with microCT,tensile testing,microindentation,and histology.Microarchitectural analysis showed that Mg group showed 12%higher in the ratio of bone volume to tissue volume at week 8,and 38.4%higher of bone volume at week 12.Tensile testing showed that the failure load and stiffness of Mg group were 66.9%and 104%higher than the control group at week 8,respectively.At week 12,Mg group was 60.8%higher in ultimate strength than the control group.Microindentation showed that,compared to the Control group,Mg group showed 49.9%higher Vickers hardness and 31%higher elastic modulus at week 8 and 12,respectively.At week 12,the new bone of Mg group remodelled to laminar bone,but those of the control group remained woven bone-like.Fixation of transverse patellar fracture with Mg pins and its degradation enhanced new bone formation and mechanical properties of the repaired patella compared to the Control group. | Dick Ho Kiu Chow Jiali Wang Peng Wan Lizhen Zheng Michael Tim Yun Ong Le Huang Wenxue Tong Lili Tan Ke Yang Ling Qin | 2021 | Bioactive Materials2021，6，11： | 3 |
| 17 | Biomechanism of impact resistance in the woodpecker's head and its application显示文摘The woodpecker does not suffer head/eye impact injuries while drumming on a tree trunk with high acceleration(more than 1000×g) and high frequency.The mechanism that protects the woodpecker's head has aroused the interest of ornithologists,biologists and scientists in the areas of mechanical engineering,material science and electronics engineering.This article reviews the literature on the biomechanisms and materials responsible for protecting the woodpecker from head impact injury and their applications in engineering and human protection. | WANG LiZhen LU Shan LIU XiaoYu NIU XuFeng WANG Chao NI YiKun ZHAO MeiYa FENG ChengLong ZHANG Ming FAN YuBo | 2013 | Science China(Life Sciences)2013，56，8： | 3 |
| 18 | Simultaneous knockdown of p18^INK4C, p27^Kip1 and MAD1 via RNA interference results in the expansion of long-term culture-initiating cells of murine bone marrow cells in vitro显示文摘外来的造血的生长管理者的联合例如干细胞因素(SCF ) , interleukin (IL )-3 和 IL-6,能导致静止造血的干细胞(HSC ) 的分割,但是它通常损害 HSC 的自强能力。然而,内在的否定房间周期管理者,例如 p18 INK4c (p18 ) p27 Kip1 (p27 ) 和 MAD1,能调整 HSC 的自强。它是未知的是否一些外来的管理者的移动并且经由 RNA 干扰(RNAi ) 的内在的否定房间周期管理者击倒导致 HSC 的前 vivo 扩大。探讨这个问题, lentiviral 基于向量的 RNAi 工具被开发生产小 RNA 的二个拷贝指向多重基因到击倒内在的否定房间周期管理者 pl8, p27 和 MAD1。形成殖民地的房间,长期的开始文化的房间(LTC-IC ) 和嫁接试金被用来评估外来、内在的管理者的效果。结果证明有仅仅 SCF 的媒介,但是没有 IL-3 和 IL-6,能维持 sca-1 + 有高 LTC-IC 的 c 工具包 + 骨头髓房间频率和低房间分割。不管多么 sca-1 +c 工具包 + 骨头髓房间在有仅仅 SCF 的媒介是有教养的并且同时经由 lentiviral 将 pl8, p27 和 MAD1 的表示击倒基于向量的 RNAi,房间展出了两高 LTC-IC 频率和高房间分割,不过,嫁接失败了。因此,同时有仅仅 SCF 的媒介的 pl8, p27 和 MAD1 击倒尽管有嫁接的损失,能导致 LTC-IC 扩大能力。 | Yan-Yi Wang Yong Yang Qingyong Chen Jianping Yu Yongzhong Hou Lizhen Han Jun He Demin Jiao Huihui Yu | 2008 | Acta Biochimica et Biophysica Sinica2008，40，8： | 3 |
| 19 | Asymmetric Ridge–Furrow and Film Cover Improves Plant Morphological Traits and Light Utilization in Rain-Fed Maize显示文摘Light is one of the most important natural resources for plant growth. Light interception(LI) and use efficiency(LUE) are often affected by the structure of canopy caused by growing pattern and agronomy managements. Agronomy practices, such as the ridge–furrow system and plastic film cover, might affect the leaf morphology and then light transmission within the canopy, thus change light extinction coefficient(k), and LI and LUE. The objective of this study is to quantify LI and LUE in rain-fed maize(Zea Mays L.), a major cropping system in Northeast China,under different combinations of ridge–furrow and film covering ratios. The tested ridge–furrow system(DRF:'double ridges and furrows') was asymmetric and alternated with wide ridge(0.70 m in width and 0.15 m in height),narrow furrow(0.10 m), narrow ridge(0.40 m in width and 0.20 m in height), and narrow furrow(0.10 m). Field experiments were conducted in 2013 and 2014 in Jilin Province, Northeast China. Four treatments were tested: no ridges and plastic film cover(control, NRF), ridges without film cover(DRF_0), ridges with 58% film cover(DRF_(58)),and ridges with 100% film cover(DRF_(100)). DRF_0 significantly increased LI by 9% compared with NRF, while film cover showed a marginal improvement. Specific leaf area in DRF experiments with film cover was significantly lower than in NRF, and leaf angle was 16% higher than in NRF, resulting in a 4% reduction in k. LUE of maize was not increased by DRF_0, but was significantly enhanced by covering film in other DRF experiments, especially by22% in DRF_(100). The increase of LUE by film cover was due to a greater biomass production and a lower assimilation portioning to vegetative organs, which caused a higher harvest index. The results could help farmers to optimize maize managements, especially in the region with decreased solar radiation under climate change. | Wanlin DONG Hang YU Lizhen ZHANG Ruonan WANG Qi WANG Qingwu XUE Zhihua PAN Zhigang SUN Xuebiao PAN | 2018 | Journal of Meteorological Research2018，32，5： | 3 |
| 20 | A Probabilistic Rating Prediction and Explanation Inference Model for Recommender Systems显示文摘Collaborative Filtering(CF) is a leading approach to build recommender systems which has gained considerable development and popularity. A predominant approach to CF is rating prediction recommender algorithm, aiming to predict a user's rating for those items which were not rated yet by the user. However, with the increasing number of items and users, thedata is sparse.It is difficult to detectlatent closely relation among the items or users for predicting the user behaviors. In this paper,we enhance the rating prediction approach leading to substantial improvement of prediction accuracy by categorizing according to the genres of movies. Then the probabilities that users are interested in the genres are computed to integrate the prediction of each genre cluster. A novel probabilistic approach based on the sentiment analysis of the user reviews is also proposed to give intuitional explanations of why an item is recommended.To test the novel recommendation approach, a new corpus of user reviews on movies obtained from the Internet Movies Database(IMDB) has been generated. Experimental results show that the proposed framework is effective and achieves a better prediction performance. | WANG Hanshi FU Qiujie LIU Lizhen SONG Wei | 2016 | China Communications2016，13，2： | 3 |
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