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| 1 | INCREASING RETURNS TO SCALE,DYNAMICS OF INDUSTRIAL STRUCTURE AND SIZE DISTRIBUTION OF FIRMS显示文摘A multi-agent model is presented to discuss the market dynamics and the size distribution of firms. The model emphasizes the effects of increasing returns to scale and gives the description of the born and death of adaptive producers. The evolution of market structure and its behavior under the technological shocks are investigated. Its dynamical results are in good agreement with some empirical “stylized facts” of industrial evolution. With the diversity of demand and adaptive growth strategies of firms, the firm size in the generalized model obeys the power-law distribution. Three factors mainly determine the competitive dynamics and the skewed size distributions of firms: 1. Self-reinforcing mechanism; 2. Adaptive firm growing strategies; 3. Demand diversity or widespread heterogeneity in the technological capabilities of firms. | Ying FAN Menghui LI Zengru DI | 2006 | Journal of Systems Science and Systems Engineering2006，15，1： | 5 |
| 2 | The Dynamics of Two-State Public Opinion Propagation On Signed Networks显示文摘The formation of public opinion on the network is a hot issue in the field of complex network research, and some classical dynamic models are used to solve this problem. The signed network is a particular form of the complex network, which can adequately describe the amicable and hostile relationships in complex real-world systems. However, the methods for studying the dynamic process of public opinion propagation on signed networks still require to be further discussed. In this paper, the authors pay attention to the influence of negative edges in order to design a two-state public opinion propagation mechanism suitable for signed networks. The authors first set the interaction rules between nodes and the transition rules of node states and then apply the model to synthetic and real-world signed networks. The simulation results show that there is a critical value of the negative edge ratio.When the negative edge ratio exceeds this critical value, the evolutionary result of public opinion will change from a consistent state to a split state. This conclusion is also consistent with the distribution result of opinions within communities in the signed network. Besides, the research on the network structural balance shows that the model makes the network evolve in a more balanced direction. | GAO Yue FAN Ying DI Zengru | 2021 | Journal of Systems Science & Complexity2021，34，1： | 2 |
| 3 | Signed PageRank on Online Rating Systems显示文摘The ratings in many user-object online rating systems can reflect whether users like or dislike the objects,and in some online rating systems,users can directly choose whether to like an object.So these systems can be represented by signed bipartite networks,but the original unsigned node evaluation algorithm cannot be directly used on the signed networks.This paper proposes the Signed Page Rank algorithm for signed bipartite networks to evaluate the object and user nodes at the same time.Based on the global information,the nodes can be sorted by the Signed Page Rank values in descending order,and the result is SR Ranking.The authors analyze the characteristics of top and bottom nodes of the real networks and find out that for objects,the SR Ranking can provide a more reasonable ranking which combines the degree and rating of node,and the algorithm also can help us to identify users with specific rating patterns.By discussing the location of negative edges and the sensitivity of object SR Ranking to negative edges,the authors also explore that the negative edges play an important role in the algorithm and explain that why the bad reviews are more important in real networks. | GU Ke FAN Ying DI Zengru | 2022 | Journal of Systems Science & Complexity2022，35，1： | 2 |
| 4 | Multi - residue analysis of avermectins in swine liver by immunoaffinity extraction and liquid chromatography-mass spectrometry 显示文摘 | Zengru Wu Junsuo Li Lili Zhu | 2001 | Journal of Chromatography B2001，755，： | 1 |
| 5 | Effects of water treatments on the activation of soil seed banks——A case study on the lower reaches of the Tarim River显示文摘Evaluation of seedling emergence is a common method used to investigate the vegetation restoration potential of soil seed banks. Previous studies have primarily been conducted in the laboratory using a single water treatment. However, when this method is used, it is dificult to optimize the water conditions for the needs of the individual species of seeds. Additionally, the germination conditions for seedlings in the laboratory are different from those in nature. To avoid these issues, we conducted experiments to activate soil seed banks in the field using different water treatments. The results revealed that: (1) generally, the number of species and quantity of seedlings decrease gradually as the water supply decreases, but that for several species most seedlings did not appear when they were provided with the greatest amount of water, and (2) different species present different germination characteristics. According to the rate of seedling emergence, the species were classified into two germination types: fast and slow. In addition, each species also had a unique climax period of emergence, which was delayed with a decrease in water supply. Therefore, the amount of water provided is vital to seedling emergence, and various water treatments should be evaluated when studying the characteristics of different species in soil seed banks. For the lower reaches of the Tarim River, the optimal soil moisture for seedling emergence ranged from 23% to 28%, and seedling conservation should be strengthened during the climax period of emergence (9-15 days from the day when water became available). These results highlight the importance of the use of an optimal water treatment and demonstrate the danger of using a single treatment method. Our results also emphasize the need for a preliminary study prior to conducting studies to evaluate seed banks. | Zengru Wang Hailiang Xu Linke Yin Jimei Li Zhanjiang Zhang Yuan Li | 2009 | Progress in Natural Science:Materials International2009，19，6： | 1 |
| 6 | Evolving model of weighted networks in- spired by scientific collaboration networks显示文摘 | Menghui Li JinshanWu DahuiWang Tao Zhou Zengru Di YingFan | 2007 | Physica A2007，375，： | 1 |
| 7 | True reason for Zipf's law in language显示文摘 | Wang Dahui Li Menghui Di Zengru | 2005 | Physica A2005，358，234： | 1 |
| 8 | True Reason for Zipf's Law in Language显示文摘 | Dahui W Menghui L Zengru D | 2005 | Physica A: Statistical Mechanics and its Applica- tions2005，358，2： | 1 |
| 9 | Evolving model of weighted Networks Inspired by Scientific Collaboration Networks显示文摘 | Menghui Li Jinshan Wu Dahui Wang Tao Zhou Zengru Di Ying Fan | 2007 | Physica A2007，275，1： | 1 |
| 10 | A kinematic study of spiral wave drift due to an electric field显示文摘 | Zengru Di Zhilin Qu James N. Weiss Alan Garfinkel | 2003 | Physics Letters A2003，，2： | 1 |
| 11 | Analyzing netizens' view and reply behaviors on the fo- rum显示文摘 | JIEFEI YUA YANQING HUA MIN YUB ZENGRU DI | 2010 | Physica A2010，，389： | 1 |
| 12 | Multi-residue analysis of avermectins in swine liver by immunoaffinity extraction and liquid chromatography - mass spectrometry显示文摘 | WU Zengru LI Junsuo ZHU Lili | 2001 | J Chromatogr: B2001，755，： | 1 |
| 13 | The weak effects of fencing on ecosystem respiration,CH4,and N2O fluxes in a Tibetan alpine meadow during the growing season显示文摘Fencing is the most common land-management practice to protect grassland degradation from livestock overgrazing on the Tibetan Plateau. However, it is unclear whether fencing reduces CO_2, CH_4, and N_2O emission. Here, we selected four vegetation types of alpine meadow(graminoid, shrub, forb, and sparse vegetation) to determine fencing effects on ecosystem respiration(Re), CH_4, and N_2O fluxes during the growing season. Despite increased average monthly ecosystem respiration(Re) for fenced graminoid vegetation at the end of the growing season, there was no significant difference between grazing and fencing across all vegetation types. Fencing significantly reduced average CH_4 uptake by about 50% in 2008 only for forb vegetation and increased average N_2O release for graminoid vegetation by 38% and 48% in 2008 and 2009,respectively. Temperature, moisture, total organic carbon, C/N, nitrate, ammonia, and/or bulk density of soil, as well as above-and belowground biomass, explained 19%~71% and 6%~33% of variation in daily and average Re and CH_4 fluxes across all vegetation types, while soil-bulk density explained 27% of variation in average N_2O fluxes. Stepwise regression showed that soil temperature and soil moisture controlled average Re, while soil moisture and bulk density controlled average CH_4 fluxes. These results indicate that abiotic factors control Re, CH_4, and N_2O fluxes; and grazing exclusion has little effect on reducing their emission—implying that climatic change rather than grazing may have a more important influence on the budgets of Re and CH_4 for the Tibetan alpine meadow during the growing season. | YiGang Hu ZhenHua Zhang ShiPing Wang ZhiShan Zhang Yang Zhao ZengRu Wang | 2017 | Research in Cold and Arid Regions2017，9，6： | 1 |
| 14 | True reason for Zipf's law in language显示文摘 | Wang Dahui Li Menghui Di Zengru | 2005 | Physica A2005，358，24： | 1 |
| 15 | Simulation and analysis of river runoff in typical cold regions显示文摘It is generally agreed that global warming is taking place, which has caused runoff generation processes and apparently total runoff amount changes in cold regions of Northwestern China. It is absolutely necessary to quantify and analyze earth surface hydrological processes by numerical models for formulating scientific sustainable development of water resources. Hydrological models became established tools for studying the hydrological cycle, but did not consider frozen soil or glacier hydrology. Thus, they should be improved to satisfy the simulation of hydrological processes in cold regions. In this paper, an energy balance glacier melt model was successfully coupled to the VIC model with frozen soil scheme, thus improving the models performance in a cold catchment area. We performed the improved VIC model to simulate the hydrological processes in the Aksu River Basin, and the simulated results are in good agreement with observed data. Based on modeling hydrological data, the runoff components and their response to climate change were analyzed. The results show: (1) Glacial meltwater recharge accounts for 29.2% of runoff for the Toxkan River, and 58.7% for the Kunma Like River. (2) The annual total runoff of two branches of the Aksu River show increasing trends, increased by about 43.1%, 25.95×106 m3 per year for the Toxkan River and by 13.1%, 14.09×106 m3 per year for the Kunma Like River during the latter 38 years. (3) The annual total runoff of the Toxkan River increased simply due to the increase of non-glacial runoff, while the increase of annual total runoff of the Kunma Like River was the result of increasing glacial (42%) and non-glacial runoff (58%). | QiuDong Zhao BaiSheng Ye YongJian Ding ShiQiang Zhang ChuanCheng Zhao Jian Wang ZengRu Wang | 2011 | Research in Cold and Arid Regions2011，3，6： | 1 |
| 16 | Theoretical perspective on synthetic man-made life:Learning from the origin of life显示文摘Creating a man-made life in the laboratory is one of life science's most intriguing yet challenging problems.Advances in synthetic biology and related theories,particularly those related to the origin of life,have laid the groundwork for further exploration and understanding in this field of artificial life or man-made life.But there remains a wealth of quantitative mathematical models and tools that have yet to be applied to this area.In this paper,we review the two main approaches often employed in the field of man-made life:the top-down approach that reduces the complexity of extant and existing living systems and the bottom-up approach that integrates welldefined components,by introducing the theoretical basis,recent advances,and their limitations.We then argue for another possible approach,namely'bottom-up from the origin of life':Starting with the establishment of autocatalytic chemical reaction networks that employ physical boundaries as the initial compartments,then designing directed evolutionary systems,with the expectation that independent compartments will eventually emerge so that the system becomes free-living.This approach is actually analogous to the process of how life originated.With this paper,we aim to stimulate the interest of synthetic biologists and experimentalists to consider a more theoretical perspective,and to promote the communication between the origin of life community and the synthetic man-made life community. | Lu Peng Zecheng Zhang Xianyi Wang Weiyi Qiu Liqian Zhou Hui Xiao Chunxiuzi Liu Shaohua Tang Zhiwei Qin Jiakun Jiang Zengru Di Yu Liu | 2023 | Quantitative Biology2023，11，4： | 0 |
| 17 | Identifying the Key Reference of a Scientific Publication显示文摘The most fundamental way to measure the impact of a scientific publication is using the number of citations it received.Though citation count and its variants are widely adopted,they have been pointed out to be poor proxies for a paper's quality because a citation might result from different reasons.It is thus crucial to quantify the true relevance of the cited papers to the citing paper.There are already some eforts in the literature devoted to addressing this isue,yet a well-accepted method is still lacking,possibly due to the absence of standard ground truth data for comparing different methods.In this paper,we propose a simple method using a local diffusion process on citation networks for identifying the key references for each scientific publication.The effectiveness and of the method are validated in a subset of the American Physical Society data in which the key references are mentioned in the abstract of papers.We further define an effective citation metric for quantifying the actual impact of each paper and its evolution.The effective citation metric additionally reveals the citation preference of research at journal and country levels. | Haochuan Cui An Zeng Ying Fan Zengru Di | 2020 | Journal of Systems Science and Systems Engineering2020，29，4： | 0 |
| 18 | The Nonlinear Dynamical Model for the Evolution of Productivity | DI Zengru(Department of Physics, Beijing Normal University, Beijing 100875 P.R.China)LI Maoling(Department of Safety Engineering, Capital University of Economics and Business, Beijing100026 P.R. China) | 1998 | Systems Science and Systems Engineering1998，8，4： | 0 |
| 19 | Orientation in Social Networks显示文摘Stanley Milgram's small world experiment presents 'six degrees of separation' of our world.One phenomenon of the experiment still puzzling us is that how individuals operating with the social network information with their characteristics can be very adept at finding the short chains. The previous works on this issue focus whether on the methods of navigation in a given network structure,or on the effects of additional information to the searching process. In this paper, the authors emphasize that the growth and shape of network architecture is tightly related to the individuals' attributes. The authors introduce a method to reconstruct nodes' intimacy degree based on local interaction. Then we provide an intimacy based approach for orientation in networks. The authors find that the basic reason of efficient search in social networks is that the degree of 'intimacy' of each pair of nodes decays with the length of their shortest path exponentially. Meanwhile, the model can explain the hubs limitation which was observed in real-world experiment. | HU Yanqing FAN Ying DI Zengru | 2017 | Journal of Systems Science & Complexity2017，30，1： | 0 |
| 20 | Flashover Probability of Wind Turbine Blade and Impact of Strong Electromagnetic Pulse from Lightning Strikes on Wind Turbine Safety显示文摘This paper systematically studies the flashover probability of wind turbine blade lightning arrester and the impact of strong electromagnetic pulses on the local and surrounding wind turbines during lightning strikes.The research results indicate that the flashover probability of direct lightning strikes by the wind turbine blade lightning arrester is almost negligible,and the strong electromagnetic pulse of wind turbine blade during lightning strikes has a serious impact on the electronic equipment of the machine,while the impact on the surrounding wind turbine is relatively small.At the same time,the calculation formula for the reflection of lightning current on the carbon brush between the wind turbine hub and the engine compartment during the flashing of the wind turbine blades is provided,and the calculation method for calculating the spatial gradient distribution of electromagnetic field intensity using Biot-Savart Law theorem is applied.The limitations of using wind turbine blades for lightning protection are pointed out,and a technical route for achieving wind turbine lightning safety is proposed,which can be used as a reference for wind turbine lightning protection technicians. | Lixin YAO Bin XIAO Jianwen ZHANG Weixiang FENG Renhong GUO Zengru YANG Chunliang ZHANG Hui YANG | 2024 | Meteorological and Environmental Research2024，15，1： | 0 |
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