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| 1 | Variations in stem radii of Larix principis-rupprechtii to environmental factors at two slope locations in the Liupan Mountains,northwest China显示文摘Relationships between stem growth and climatic and edaphic factors,notably air temperatures and soil moisture for different slopes,are not completely understood.Stem radial variations were monitored at the bottom and top slope positions in a Larix principis-rupprechtii plantation during the 2017 and 2018 growing seasons.Total precipitation during the growing season in 2017 and 2018 was 566 mm and 728 mm,respectively.Stem contractions typically occurred after mid-morning followed by swelling in the late afternoon in both plots,reflecting the diurnal cycle of water uptake and loss.Trees at the two locations showed the same growth initiation(mid-May)because of the small differences in air and soil temperatures.There were no significant differences in cumulative stem radial growth between the bottom plot(1.57±0.34 mm)and the top plot(1.55±0.26 mm)in 2018.However,in 2017,the main growth period of the bottom plot ceased 17 days earlier than in the top plot,while cumulative seasonal growth of the bottom plot(1.08±0.25 mm)was significantly less than the top plot(1.54±0.43 mm).Maximum daily stem shrinkage was positively correlated with air and soil temperatures,solar radiation,vapor pressure deficits,and negatively correlated with volumetric soil moisture content.The maximum daily shrinkage reflected transpiration rates as affected by environmental factors.Daily radial stem increment was correlated with precipitation and volumetric soil moisture in both years,but with air temperatures only in 2017.The seasonal growth of L.principis-rupprechtii Mayr thus shows interannual dynamics,while precipitation constitutes a key driving factor. | Jing Ma Jianbin Guo Yanhui Wang Zebin Liu Di Gao Liu Hong Ziyou Zhang | 2021 | Journal of Forestry Research2021，32，2： | 6 |
| 2 | Incident-based traffic congestion control strategy显示文摘Traffic incident happens frequently in urban traffic network and it affects normal operation of traffic system seriously so that study on incident-based congestion control strategies is very important. This study addresses the problem of the temporary vehicle movement bans design under incident-based traffic congestion situation. A bi-level programming model is proposed to formulate this problem. The upper level problem is to minimize the total travel cost in the view of traffic management agencies, and the lower level problem is to present travelers’ dynamic route choice behavior under temporary vehicle movement bans using the simulation of cell transmission model, then a genetic algorithm is employed to solve the proposed bi-level programming model. Computational results show that the temporary vehicle movement bans measure is able to alleviate the traffic network incident-based congestion effectively and improve system performance of traffic network. | ZHANG AoMuHan GAO ZiYou REN HuaLing | 2011 | Science China(Technological Sciences)2011，54，5： | 4 |
| 3 | TWO-WAY ROAD NETWORK DESIGN PROBLEM WITH VARIABLE LANES显示文摘 | Haozhi ZHANG Ziyou GAO | 2007 | Journal of Systems Science and Systems Engineering2007，16，1： | 4 |
| 4 | BILEVEL PROGRAMMING MODEL AND SOLUTION METHOD FOR MIXED TRANSPORTATION NETWORK DESIGN PROBLEM显示文摘By handling the travel cost function artfully,the authors formulate the transportationmixed network design problem (MNDP) as a mixed-integer,nonlinear bilevel programming problem,in which the lower-level problem,comparing with that of conventional bilevel DNDP models,is nota side constrained user equilibrium assignment problem,but a standard user equilibrium assignmentproblem.Then,the bilevel programming model for MNDP is reformulated as a continuous version ofbilevel programming problem by the continuation method.By virtue of the optimal-value function,the lower-level assignment problem can be expressed as a nonlinear equality constraint.Therefore,thebilevel programming model for MNDP can be transformed into an equivalent single-level optimizationproblem.By exploring the inherent nature of the MNDP,the optimal-value function for the lower-level equilibrium assignment problem is proved to be continuously differentiable and its functionalvalue and gradient can be obtained efficiently.Thus,a continuously differentiable but still nonconvexoptimization formulation of the MNDP is created,and then a locally convergent algorithm is proposedby applying penalty function method.The inner loop of solving the subproblem is mainly to implementan all-or-nothing assignment.Finally,a small-scale transportation network and a large-scale networkare presented to verify the proposed model and algorithm. | Haozhi ZHANG·Ziyou GAOSchool of Traffic and Transportation,Beijing Jiaotong University,Beijing 100044,China China Urban SustainableTransport Research Centre,China Academy of Transportation Sciences,Beijing 100029,China. | 2009 | Journal of Systems Science & Complexity2009，22，3： | 4 |
| 5 | Evidence for charge and spin density waves in single crystals of La_(3)Ni_(2)O_(7) and La_(3)Ni_(2)O_(6)显示文摘Charge and spin orders are intimately related to superconductivity in copper oxide superconductors.Elucidation of the competing orders in various nickel oxide compounds is crucial,given the fact that superconductivity has been discovered in Nd_(0.8)Sr_(0.2)NiO_(2)films.Herein,we report structural,electronic transport,magnetic,and thermodynamic characterizations of single crystals of La_(3)Ni_(2)O_(7)and La_(3)Ni_(2)O_(6).La_(3)Ni_(2)O_(7)is metallic with mixed Ni^(2+)and Ni^(3+)valent states.Resistivity measurements yield two transition-like kinks at~110 and 153 K.The kink at 153 K is further revealed from magnetization and specific heat measurements,indicative of the formation of charge and spin density waves.La_(3)Ni_(2)O_(6)single crystals obtained from the topochemical reduction of La_(3)Ni_(2)O_(7)are insulating and show an anomaly at~176 K on magnetic susceptibility.The transition-like behaviors of La_(3)Ni_(2)O_(7)and La_(3)Ni_(2)O_(6)are analogous to those observed in La_(4)Ni_(3)O_(10) and La_(4)Ni_(3)O_(8),suggesting that charge and spin density waves are a common feature in the ternary La-Ni-O system with mixed-valent states of nickel. | Zengjia Liu Hualei Sun Mengwu Huo Xiaoyan Ma Yi Ji Enkui Yi Lisi Li Hui Liu Jia Yu Ziyou Zhang Zhiqiang Chen Feixiang Liang Hongliang Dong Hanjie Guo Dingyong Zhong Bing Shen Shiliang Li Meng Wang | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，1： | 2 |
| 6 | Effects of conservation tillage practices on winter wheat water-use efficiency and crop yield on the Loess Plateau, China显示文摘 | Ziyou Su Jinsong Zhang Wenliang Wu Dianxiong Cai Junjie Lv Guanghui Jiang Jian Huang Jun Gao Roger Hartmann Donald Gabriels | 2006 | Agricultural Water Management2006，，3： | 2 |
| 7 | Superlinear/Quadratic One-Step Smoothing Newton Method for PO-NCP Without Strict Complementarity Problem显示文摘 | Zhang Liping Gao Ziyou | 2002 | Mathematical Methods of Operation Research2002，，： | 1 |
| 8 | A Globally Convergent Algorithm for Transportation Continuous Network Design Problem显示文摘 | Gao Ziyou Sun Huijun Zhang Haozhi | 2007 | Optimization and Engineering2007，8，3： | 1 |
| 9 | Effects of on winter wheat water-use the loess plateau, china显示文摘 | Ziyou Su Jinsong Zhang conservation tillage practices efficiency and crop yield on Agriculture water management Wenliang Wu | 2007 | 87: 307-3142007，87，： | 1 |
| 10 | Superlinear/quadratic one-step smoothing Newton method for P0-NCP without strict complementarity显示文摘 | Liping Zhang Ziyou Gao | 2002 | Mathematical Methods of Operations Research2002，，2： | 1 |
| 11 | Superlinear/quadratic one-stepsmoothing Newton method for P_0-NCP without strict complementarity显示文摘 | ZHANG LIPING GAO ZIYOU | 2002 | Mathematical Methods of Operation Research2002，56，： | 1 |
| 12 | Superlinear/quadratic one-stepsmoothing Newton method for P0-NCP without strict complementarity显示文摘 | Zhang Liping Gao Ziyou | 2002 | Mathematical Methods of Operation Research2002，56，： | 1 |
| 13 | Chinese speech identification in multi-talker babble with diotic and dichotic listening显示文摘To explore Chinese Mandarin speech identification in babble of spatially separated talkers,subjective speech identification tests of word and sentence were made with diotic and dichotic listening respectively.The result shows that the speech identification scores changed non-monotonically with the masker number N increasing from 1 to infinity,first declining gradually until reaching their minimums and then rising.Statistical difference was found between the scores of diotic and dichotic listening.For all the values of N checked,dichotic listening achieved higher scores than diotic listening,showing that dichotic effect has an advantage for reducing babble masking.And the scores of sentence test are significantly higher than that of word test with whether diotic or dichotic listening,indicating that the linguistic connection in sentence can help listeners get a better perception of the target speech in babble masking. | PENG JianXin ZHANG HongHu WANG ZiYou | 2012 | Chinese Science Bulletin2012，57，20： | 1 |
| 14 | Effects of conservation tillage practices on winter wheat water-use efficiency and crop yield on the loess plateau, China显示文摘 | Su Ziyou Zhang Jinsong Wu Wenliang | 2007 | Agriculture water management2007，87，3： | 1 |
| 15 | Effect of conservation tillage practices on winter wheat water-use efficiency and crop yield on the Loess Plateau, China显示文摘 | Su Ziyou Zhang Jinsong Wu Wenliang | 2007 | Agricultural Water Management2007，87，3： | 1 |
| 16 | Coastal wetlands in Lianyungang,Jiangsu Province,China:probably the most important site globally for the Asian Dowitcher(Limnodromus semipalmatus)显示文摘Background:Despite an increasing number of surveys and a growing interest in birdwatching,the population and distribution of Asian Dowitcher(Limnodromus semipalmatus),a species endemic to the East Asian-Australasian and Central Asian Flyways,remains poorly understood,and published information about the species is largely outdated.In boreal spring 2019,over 22,432 Asian Dowitchers were recorded in a coastal wetland at Lianyungang,Jiangsu Prov-ince,China,constituting 97.5%of its estimated global population.Methods:In 2019 and 2020,we conducted field surveys at Lianyungang to determine the numbers of Asian Dow-itchers using the area during both southward and northward migrations.We also assessed the distribution and abun-dance of Asian Dowitchers elsewhere along the China coast by searching literature and consulting expert opinion.Results:The coastal wetlands of Lianyungang are the most important stopover site for Asian Dowitchers during both northward and southward migrations;they supported over 90%of the estimated global population during north-ward migration in two consecutive years(May 2019 and 2020).This area also supported at least 15.83%and 28.42%(or 30.74%and 53.51%using modelled estimates)of the global population during southward migration in 2019 and 2020 respectively.Coastal wetlands in the west and north of Bohai Bay also have been important stopover sites for the species since the 1990s.Although comprehensive,long-term monitoring data are lacking,available evidence sug-gests that the population of the species may have declined.Conclusions:The high concentration of Asian Dowitchers at Lianyungang during migration means the species is highly susceptible to human disturbances and natural stochastic events.The coastal wetlands of Lianyungang should be protected and potentially qualify for inclusion in China’s forthcoming nomination for World Heritage listing of Migratory Bird Sanctuaries along the Coast of Yellow Sea-Bohai Gulf of China(Phase II)in 2023.Additional research is needed to understand Asian Dowitchers’distribution and ecology,as well as why such a high proportion of their population rely on the Lianyungang coast. | Ziyou Yang Jing Li Yongxiang Han Chris J.Hassell Kar-Sin Katherine Leung David S.Melville Yat-tung Yu Lin Zhang Chi-Yeung Choi | 2021 | Avian Research2021，12，3： | 1 |
| 17 | The effect of restricted velocity in the two-lane on-ramp system 显示文摘 | Feng Li Zhang Xiuyuan Gao Ziyou | 2007 | Physica A2007，374，： | 1 |
| 18 | Effects of conservation tillage practices on winter wheat water-use efficiency and crop yield on the Loess Plateau, China显示文摘 | Su Ziyou Zhang Jinsong Wu Wenliang | 2007 | Agricultural Water Management2007，87，3： | 1 |
| 19 | Superlinner/quadratic one-stepsmoothing Newton method for Po -NCP without strict complementarity 显示文摘 | Zhang Liping Gao Ziyou | 2002 | Mathematical Methods of Operation Reserch2002，56，： | 1 |
| 20 | Effect of ATIS information under incident-based congestion propagation显示文摘 | ZHANG Aomuhan GAO Ziyou | 2012 | Procedia-Social and Behavioral Sciences2012，43，4： | 1 |
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