Results for 'Cun-Zhi Liu'

1000+ found
Order:
  1.  89
    Increased Posterior Insula-Sensorimotor Connectivity Is Associated with Cognitive Function in Healthy Participants with Sleep Complaints.Chun-Hong Liu, Cun-Zhi Liu, Xue-Qi Zhu, Ji-Liang Fang, Shun-Li Lu, Li-Rong Tang, Chuan-Yue Wang & Qing-Quan Liu - 2018 - Frontiers in Human Neuroscience 12.
  2. Learning behavioral differences among students and ethical issues in a university cloud classroom system.Zhi Liu, Hai Liu, Hao Zhang & Sannyuya Liu - 2019 - In Ashley Blackburn, Irene Linlin Chen & Rebecca Pfeffer (eds.), Emerging trends in cyber ethics and education. Hershey, PA: Information Science Reference.
     
    Export citation  
     
    Bookmark  
  3.  14
    Wiener and Hyper-Wiener Indices of Polygonal Cylinder and Torus.Zhi-Ba Peng, Abdul Rauf Nizami, Zaffar Iqbal, Muhammad Mobeen Munir, Hafiz Muhammad Waqar Ahmed & Jia-Bao Liu - 2021 - Complexity 2021:1-15.
    In this study, we first introduce polygonal cylinder and torus using Cartesian products and topologically identifications and then find their Wiener and hyper-Wiener indices using a quick, interesting technique of counting. Our suggested mathematical structures could be of potential interests in representation of computer networks and enhancing lattice hardware security.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  4.  20
    Scale Effects of the Relationships between 3D Building Morphology and Urban Heat Island: A Case Study of Provincial Capital Cities of Mainland China.Zhi Qiao, Xiping Han, Chen Wu, Luo Liu, Xinliang Xu, Zongyao Sun, Wei Sun, Qian Cao & Linwan Li - 2020 - Complexity 2020:1-12.
    In the process of rapid urbanization, urban heat island effect has been showing more and more significant impacts on human well-being. Therefore, a more detailed understanding of the impact of three-dimensional building morphology on UHI effect across a continuum of spatial scales will be necessary to guide and improve the human settlement.This study selected 31 provincial capital cities of mainland China to analyze the impacts of the 3D building morphology, including the number, area, height, volume, and the surface area of (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  5.  7
    Modeling Intercity CO2 Trading Scenarios in China: Complexity of Urban Networks Integrating Different Spatial Scales.Chongming Li, Na Li, Zuo Zhang, Lu Zhang, Zhi Li & Yanzhong Liu - 2022 - Complexity 2022:1-16.
    Today, cities account for the majority of global energy consumption and CO2 emissions. The interaction between cities is critical for regional low-carbon development. At this time, China has turned to the full opening of the carbon trading market as an important policy tool for achieving its ambitious emission reduction goals. This paper attempts to explore the spatial relationships among cities from the perspective of carbon trading. A “multiscenarios across different spatial scales” analysis framework applied to the allocation and trading of (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  6.  24
    Investigation of Fire-Fighting Evacuation Indication System in Industrial Plants Based on Virtual Reality Technology.Zhi Tang, Die Zhang, Jiajing Du, Wenlan Bao, Weiran Zhang & Jiaqin Liu - 2022 - Complexity 2022:1-12.
    The fire safety of industrial buildings has always been a great concern. An excellent evacuation indicator system can guide the personnel to escape quickly, thus reducing the casualties. In this study, we present a virtual simulation fire scene based on virtual reality to explore the impact of different colors, brightness values, and flashing frequencies on escape time in case of fire emergencies. The presented scene can help shorten the time required for evacuation in an industrial plant by identifying the escape (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  7.  33
    Fixed-Time Sliding-Mode Fault-Tolerant Control of Waste Heat Power Generator Systems.Zhi Wang, Yateng Bai, Jin Xie, Zhijie Li, Caoyuan Ma, Pengjuan Liu & Yong Zhang - 2018 - Complexity 2018:1-8.
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  8.  22
    Lingering Sound: Event-Related Phase-Amplitude Coupling and Phase-Locking in Fronto-Temporo-Parietal Functional Networks During Memory Retrieval of Music Melodies.Yi-Li Tseng, Hong-Hsiang Liu, Michelle Liou, Arthur C. Tsai, Vincent S. C. Chien, Shuoh-Tyng Shyu & Zhi-Shun Yang - 2019 - Frontiers in Human Neuroscience 13.
  9.  10
    Result diversification by multi-objective evolutionary algorithms with theoretical guarantees.Chao Qian, Dan-Xuan Liu & Zhi-Hua Zhou - 2022 - Artificial Intelligence 309 (C):103737.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  10.  3
    军事美学: 一部关于军事与战争的哲学与诗学.Liyan Tian, Jinsheng Liu & Cun Yi (eds.) - 2001 - Beijing: Guo fang da xue chu ban she.
    本书包括:第一章:军事美的本质、第二章:军事美的审美范畴、第三章:军事审美形态、第四章:中国人民解放军军事美等。.
    Direct download  
     
    Export citation  
     
    Bookmark  
  11.  11
    A local method for identifying causal relations under Markov equivalence.Zhuangyan Fang, Yue Liu, Zhi Geng, Shengyu Zhu & Yangbo He - 2022 - Artificial Intelligence 305 (C):103669.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  12.  49
    Inhibitory Control in Speech Comprehension among Dai–Han Bilingual Children.Yun Tao, Zhi Liu, Tobias Tempel, Rui Chen, Xie Ma, Xiaoxi Wang, Yan Liu & Yongxia Qu - 2017 - Frontiers in Psychology 8.
  13.  16
    The timing of gaze-contingent decision prompts influences risky choice.Xiao-Yang Sui, Hong-Zhi Liu & Li-Lin Rao - 2020 - Cognition 195 (C):104077.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  14.  27
    A new method based on entropy theory for genomic sequence analysis.Ming Xiao, Zhi Zhan Zhu, Jueping Liu & Chu Yu Zhang - 2002 - Acta Biotheoretica 50 (3):155-165.
    We have refined entropy theory to explore the meaning of the increasing sequence data on nucleic acids and proteins more conveniently. The concept of selection constraint was not introduced, only the analyzed sequences themselves were considered. The refined theory serves as a basis for deriving a method to analyze non-coding regions (NCRs) as well as coding regions. Positions with maximal entropy might play the most important role in genome functions as opposed to positions with minimal entropy. This method was tested (...)
    Direct download  
     
    Export citation  
     
    Bookmark  
  15.  7
    Dynamic Language Network in Early and Late Cantonese–Mandarin Bilinguals.Xiaojin Liu, Liu Tu, Xiaoxi Chen, Miao Zhong, Meiqi Niu, Ling Zhao, Zhi Lu & Ruiwang Huang - 2020 - Frontiers in Psychology 11.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  16.  90
    The Relationship Between Future Time Perspective and Psychological Violence Among Chinese College Students.Kuiyun Zhi, Jian Yang, Yongjin Chen, Niyazi Akebaijiang, Meimei Liu, Xiaofei Yang & Shurui Zhang - 2021 - Frontiers in Psychology 12.
    Based on early experiences and current conditions, a future time perspective influences college students’ behaviors, while psychological violence critically threatens college students’ health. This study explored the relationship between a future time perspective and the psychological violence of perpetrators based on an online investigation of 1424 college students aged 17 to 31 in China. The results showed that a future time perspective is significantly positively associated with psychological violence. Positive future orientation is negatively associated with psychological violence. Negative and confused (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  17.  29
    Characteristics and Mechanism Analysis of Aerodynamic Noise Sources for High-Speed Train in Tunnel.Xiao-Ming Tan, Hui-Fang Liu, Zhi-Gang Yang, Jie Zhang, Zhong-Gang Wang & Yu-wei Wu - 2018 - Complexity 2018:1-19.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  18.  32
    Corrigendum: Inhibitory Control in Speech Comprehension among Dai–Han Bilingual Children.Yun Tao, Zhi Liu, Tobias Tempel, Rui Chen, Xie Ma, Xiaoxi Wang, Yan Liu & Yongxia Qu - 2017 - Frontiers in Psychology 8.
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark  
  19.  12
    Normative or Non-Normative Marx: How is a Fact-Sensitive Normative Theory Possible?Jiaxin Liu & Zhi Li - 2023 - Journal of Social and Political Philosophy 2 (1):34-44.
    Is it possible for historical materialism to have a specific normative basis that allows the scientific aspects of Marx’s theory to be compatible with his political philosophy and ethics? No consensus has so far been reached on this question. The debate between the normative Marx and the non-normative Marx starts with an acknowledgement of a dichotomy between facts and value. In order to resolve this dichotomy, many studies tend to place value rather than facts at the heart of their arguments (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  20.  15
    An Approach to Understanding the World: Mastery of Learning Strategy and Its Characteristics.Dian-Zhi Liu & Mei-Juan Hu - 2011 - Journal of Aesthetic Education (Misc) 5:015.
    Direct download  
     
    Export citation  
     
    Bookmark  
  21.  8
    Effect of temperature on the anisotropy of AZ31 magnesium alloy rolling sheet under high strain rate deformation.Yanyu Liu, Pingli Mao, Feng Zhang, Zheng Liu & Zhi Wang - forthcoming - Philosophical Magazine:1-19.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  22.  13
    Multi-Indices Quantification for Left Ventricle via DenseNet and GRU-Based Encoder-Decoder with Attention.Zhi Liu, Yunhua Lu, Xiaochuan Zhang, Sen Wang, Shuo Li & Bo Chen - 2021 - Complexity 2021:1-9.
    More and more research on left ventricle quantification skips segmentation due to its requirement of large amounts of pixel-by-pixel labels. In this study, a framework is developed to directly quantify left ventricle multiple indices without the process of segmentation. At first, DenseNet is utilized to extract spatial features for each cardiac frame. Then, in order to take advantage of the time sequence information, the temporal feature for consecutive frames is encoded using gated recurrent unit. After that, the attention mechanism is (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  23.  12
    Distributed Optimal Day-Ahead Scheduling in a Smart Grid: A Trade-Off among Consumers, Power Suppliers, and Transmission Owners.Xiong Hu & Zhi-Wei Liu - 2017 - Complexity:1-11.
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  24.  8
    Brain Structure as a Correlate of Odor Identification and Cognition in Type 2 Diabetes.Mimi Chen, Jie Wang, Shanlei Zhou, Cun Zhang, Datong Deng, Fujun Liu, Wei Luo, Jiajia Zhu & Yongqiang Yu - 2022 - Frontiers in Human Neuroscience 16.
    Background: It has been reported that type 2 diabetes is associated with olfactory identification impairments and cognitive decline. However, the relationship between OI impairments and cognitive decline is largely unknown in T2DM patients.Methods: Sixty-eight T2DM patients and 68 healthy controls underwent 3D-T1 MRI scans, olfactory and cognitive assessments. The cortical thickness of olfaction-related brain regions, olfactory and cognitive scores were compared between groups. Correlation analyses were carried out among cognition, olfaction, and cortical thickness of olfaction-related brain regions.Results: First, the cognitive (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  25.  51
    Intermittent Sampled Data Control for Time-Varying Formation-Containment of the Multiagent System with/without Time Delay.Ming Chi, Xu-Long Wang, Yangming Dou & Zhi-Wei Liu - 2021 - Complexity 2021:1-9.
    Time-varying formation-containment problems for a second-order multiagent system are studied via pulse-modulated intermittent control in this paper. A distributed control framework utilizing the neighbors’ positions and velocities is designed so that leaders in the multiagent system form a formation, and followers move to the convex hull formed by each leader. Different from the traditional formation-containment problems, this paper applies the PMIC framework, which is more common and more in line with the actual control scenarios. Based on the knowledge of matrix (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  26.  15
    Cognitive process underlying ultimatum game: An eye-tracking study from a dual-system perspective.Zi-Han Wei, Qiu-Yue Li, Ci-Juan Liang & Hong-Zhi Liu - 2022 - Frontiers in Psychology 13.
    According to the dual-system theories, the decisions in an ultimatum game are governed by the automatic System 1 and the controlled System 2. The former drives the preference for fairness, whereas the latter drives the self-interest motive. However, the association between the contributions of the two systems in UG and the cognitive process needs more direct evidence. In the present study, we used the process dissociation procedure to estimate the contributions of the two systems and recorded participants eye movements to (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  27.  15
    Frontal Eye Field Involvement in Color and Motion Feature-Based Attention: Single-Pulse Transcranial Magnetic Stimulation.Xi Chen, Jing-Na Jin, Fang Xiang, Zhi-Peng Liu & Tao Yin - 2018 - Frontiers in Human Neuroscience 12.
  28.  14
    Prediction of the RFID Identification Rate Based on the Neighborhood Rough Set and Random Forest for Robot Application Scenarios.Hong-Gang Wang, Shan-Shan Wang, Ruo-Yu Pan, Sheng-Li Pang, Xiao-Song Liu, Zhi-Yong Luo & Sheng-Pei Zhou - 2020 - Complexity 2020:1-15.
    With the rapid development of Internet of Things technology, RFID technology has been widely used in various fields. In order to optimize the RFID system hardware deployment strategy and improve the deployment efficiency, the prediction of the RFID system identification rate has become a new challenge. In this paper, a neighborhood rough set and random forest combination model is proposed to predict the identification rate of an RFID system. Firstly, the initial influencing factors of the RFID system identification rate are (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  29. Xunzi cheng sheng cheng zhi si xiang yan jiu.Wenqi Liu - 1973 - [Taibei?]: [Publisher Not Identified].
     
    Export citation  
     
    Bookmark  
  30.  11
    Liu Jingchuang wen cun.Jingchuang Liu - 2017 - Shanghai: Shanghai gu ji chu ban she. Edited by Nianqu Liu & Shuxian Liu.
    Direct download  
     
    Export citation  
     
    Bookmark  
  31.  3
    "Zhou yi" de zhi guo zhi dao: Cheng Yi Yi xue yao zhi = Zhouyi Zhiguozhidao: Chengyi Yixue Yaozhi.Yongxia Liu - 2016 - Beijing Shi: Zhi shi chan quan chu ban she.
    Direct download  
     
    Export citation  
     
    Bookmark  
  32. Wen xue yu ren de sheng cun kun jing.Shuxin Liu - 2011 - Beijing: Zhongguo she hui ke xue chu ban she.
    Direct download  
     
    Export citation  
     
    Bookmark  
  33.  1
    Cong Zhinan Shan dao Tangxun Hu: Zhongguo de zhi shi, si xiang yu zong jiao yan jiu.Zhiqing Liu - 2019 - Taibei Shi: Wan juan lou tu shu gu fen you xian gong si.
    「玻璃帷幕•懵懂篇Ⅲ」,承接「玻璃帷幕‧懵懂篇 Ⅱ」,幼嵐身受重傷,卻因為葉文芸一句話,令她憤而上臺演出。拿命與葉文芸賭氣的方幼嵐,是否會因此葬送演戲生涯? 慕容麗華勸梅玉晴選擇愛情歸屬,她究竟會選擇葉文芸?還是柳季剛? 柳季剛帶女人回家,被葉文芸抓姦在床,卻是經紀人繆于綸大發脾氣。到底發生了什麼事? 愛戲成痴,卻對人沒有感情的葉文芸,屢屢被人侵犯底線,造成她為此昏迷不醒?一位巨星是否會因此殞落? 戲劇節的賭局揭曉了。最後的結論究竟是什麼? 零度劇團的下齣戲,導演是誰?演員又是哪些?劇碼為何? 何雨煙成了零度劇團子團的團長,接下來,要面對的是什麼? 明爭暗鬥的舞臺背後,隱藏了多少精彩可期的事情,敬請期待!.
    Direct download  
     
    Export citation  
     
    Bookmark  
  34.  2
    Jie shi shi jie yu gai bian shi jie: Zhongguo si xiang shi zhong de zhi shi xin yang yu ren jian qing huai.Zhiqing Liu - 2019 - [Wuhan]: Wuhan da xue chu ban she.
    Direct download  
     
    Export citation  
     
    Bookmark  
  35. Fa zhi zhe xue tan yuan.Yang Liu - 2022 - Beijing Shi: Zhi shi chan quan chu ban she.
    本书着力讨论法律制度及其理念趋变的道理,逻辑,原则,可能性;对传统的主体构成性的法律体系,既有评判解析,又有引申;还而探讨了人类制度文明走向法治化的前景.从法治概念的探讨切入,大致介绍了中西方法治的发 展历程,再引入不同法治类型背后隐含的法哲学基本问题,从静态到动态审视了自然法学说与法律实证主义的关系;接着讨论了法律规范的逻辑结构,详述权利与权力之间的渊源及其实践类型;然后以较多笔墨着重叙述法治与公 正,法治的制度基础,在法治框架下衍生出的司法能动主义;最后从法治文化论角度重新审视法治,并回顾中国法治思想发展与制度实践的历程.
    Direct download  
     
    Export citation  
     
    Bookmark  
  36.  9
    Si lu wen ming dui hua: Liu Zhi dui Jiami si xiang de quan shi = Liu Zhi's interpretation of Jāmī and his thoughts: a dialogue between two civilizations on the silk road.Hui Liu - 2017 - Beijing Shi: She hui ke xue wen xian chu ban she.
    劉智與賈米這兩位時隔幾百年、跨越幾千公里的波斯與中國學者沿著古老的絲綢之路,通過兩者的著述和譯文建立了學術與思想上的聯繫。本書以絲綢之路上的人文交流為時代背景,以波斯蘇非典籍從中亞到中國內地的傳播途徑 與方式為切入點,研究明清時期中國穆斯林知識份子群體出現與發展的歷史背景,以及漢文譯著活動的文化動因,並以此為基礎揭示出劉智與賈米哲學思想的淵源。.
    Direct download  
     
    Export citation  
     
    Bookmark  
  37.  4
    Wan Qing Min chu "ge ren - jia - guo - tian xia" ti xi zhi bian.Tao Liu - 2013 - Shanghai Shi: Fu dan da xue chu ban she.
    本書主要討論晚清.民初"個人-家-國-天下"體系的變遷,闡述了個人與天下.個人與國家.女人與國家.無家無國唯有情等方面的內容.
    Direct download  
     
    Export citation  
     
    Bookmark  
  38.  4
    Ren zhi ke xue qian yan zhong de zhe xue wen ti: shen ti, ren zhi yu shi jie.Xiaoli Liu - 2014 - Beijing Shi: Jin cheng chu ban she.
    No categories
    Direct download  
     
    Export citation  
     
    Bookmark  
  39.  6
    Evaluation Scale or Output Format: The Attentional Mechanism Underpinning Time Preference Reversal.Yan-Bang Zhou, Qiang Li, Qiu-Yue Li & Hong-Zhi Liu - 2022 - Frontiers in Psychology 13.
    Time preference reversals refers to systematic inconsistencies between preferences and valuations in intertemporal choice. When faced with a pair of intertemporal options, people preferred the smaller-sooner option but assign a higher price to the larger-later one. Different hypotheses postulate that the differences in evaluation scale or output format between the choice and the bid tasks cause the preference reversal. However, these hypotheses have not been distinguished. In the present study, we conducted a hybrid task, which shares the same evaluation scale (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  40.  1
    Qing gan yu zhi xu: yi xian Qin ru jia si xiang wei zhong xin.Shiyu Liu - 2018 - Beijing: Ren min chu ban she.
    Direct download  
     
    Export citation  
     
    Bookmark  
  41.  7
    Xing er shang xue zhi si bei hou de zhi shi tan xun: Zhongguo xian dai zhe xue zhi shi lun kao cha = Xingershangxue zhi si beihou de zhishi tanxun: Zhongguo xiandai zhexue zhishilun kaocha.Aijun Liu - 2022 - Beijing Shi: Ren min chu ban she.
    No categories
    Direct download  
     
    Export citation  
     
    Bookmark  
  42. Si xiang zhi mi yu ren lei zhi meng.Xiaobo Liu - 1990 - Taibei Shi: Feng yun shi dai chu ban gong si.
     
    Export citation  
     
    Bookmark  
  43.  9
    Tian bian you yi kuai wu yun: ru xue yu cun zai zhu yi.Dong Liu - 2018 - Nanjing Shi: Jiangsu ren min chu ban she.
    Direct download  
     
    Export citation  
     
    Bookmark  
  44.  13
    The Complexity of Urban CO2 Emission Network: An Exploration of the Yangtze River Middle Reaches Megalopolis, China.Zuo Zhang, Zhe Wang, Wei Zhang, Yanzhong Liu, Zhi Li & Lin Huang - 2021 - Complexity 2021:1-14.
    With their focus on human production and consumption activities, cities incur massive energy consumption and CO2 emissions. An intercity connection is a typical complex system in which the interaction between cities is crucial for developing low-carbon outputs within the urban agglomeration. This paper presents the construction of the CO2 emission network of an urban agglomeration in the Yangtze River middle reaches megalopolis, based on the gravity model. Combined with social network analysis, a multilevel analysis framework is proposed to deal with (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  45.  9
    Zheng ju diao cha yu zhi zheng jing yao.Jianhua Liu - 2020 - Wuhan Shi: Hubei ren min chu ban she.
    本书共分十五章,内容包括:证据制度的历史沿革,证据资格和证据分类,证据的法定形式类,司法证明的标准与方法,司法证明的对象与责任,证据调查的主体等.
    Direct download  
     
    Export citation  
     
    Bookmark  
  46.  5
    Shen sheng yu shi su: wei mei zhu yi de jia zhi yi xiang.Qiong Liu - 2017 - Beijing: Zhongguo she hui ke xue chu ban she.
    Direct download  
     
    Export citation  
     
    Bookmark  
  47.  4
    Yisaiya. Bolin yu dang dai zhong guo: Zi you yu duo yuan zhi jian: Isaiah Berlin and contemporary China: between liberalism and pluralism.Dong Liu (ed.) - 2014 - Nanjing: Yi lin chu ban she.
    本书是“以赛亚·伯林与当代中国国际研讨会”论文集,汇集了国内外著名学者伯林研究的最新成果,从伯林语境下自由与多元的关系出发,探讨了伯林思想对当代中国的经验与智慧有着怎样的启迪意义.
    No categories
    Direct download  
     
    Export citation  
     
    Bookmark  
  48.  2
    Zhongguo tui lei luo ji dui Zhongguo gu dai ke xue zhi ying xiang.Bangfan Liu - 2014 - Changchun Shi: Jilin ren min chu ban she.
    No categories
    Direct download  
     
    Export citation  
     
    Bookmark  
  49.  4
    Fa zhi guo jia yu fa lü xiao li.Xingyi Liu - 2017 - Taibei Shi: Han Lu tu shu chu ban you xian gong si.
    Direct download  
     
    Export citation  
     
    Bookmark  
  50. Dang dai qing nian su zhi yu xiu yang: zuo you li xiang, you dao de, you wen hua, you ji lü yi dai xin ren.Binjie Liu - 1985 - Lanzhou: Gansu sheng xin hua shu dian fa xing. Edited by Hong Jiang.
    No categories
     
    Export citation  
     
    Bookmark  
1 — 50 / 1000