263 research outputs found
Effects of climate variability on evaporation in Dongping Lake, China, during 2003–2010
No full textBased on two long-term, hourly (10:30–11:30 and 13:10–14:10) meteorological over-lake observations and data from Shenxian meteorological station, nearby Dongping Lake, the Penman-Monteith equation and reference evaporation ratio algorithm were used to calculate lake evaporation in Dongping Lake, China, from 2003 to 2010. The variation trend of evaporation of Dongping Lake was analyzed, and the influences that caused changes in lake evaporation were also discussed. The results show that (1) the total annual evaporation in Dongping Lake increased at 18.24 mm/a during 2003–2010.The major climatic factors accounting for this increase are the rising net radiation and the rising air temperature; (2) the total annual evaporation in a particular hour (13:10–14:10) in Dongping Lake increased at 4.55 mm/a during 2003–2010—the major climate factors that accounted for this increase are rising net radiation, followed by air temperature, wind velocity, and air humidity; (3) against the background of global warming, the climate of Dongping Lake tended to be dry during 2003–2010; the largest contribution to this comes from air temperature, followed by wind velocity and relative humidity; and (4) the monthly evaporation in Dongping Lake has seasonal variability.Water ManagementCivil Engineering and Geoscience
Warren Wilson College Political Science Professor to Lecture March 24
No full textDongping Han teaches political science at Warren Wilson College in Asheville, N.C. Han is the author of The Unknown Cultural Revolution: Life and Change in a Chinese Village
Exploration of Straw Fiber as Reducing Agent Utilization in Rotary Hearth Furnace Process for Direct Reduced Iron Production
No full textStraw fiber is a waste obtained by jet milling after extracting valuable substances form corn straw through steam explosion-washing-mechanical carding process. At the same time, it is also a clean and renewable reducing agent. In this study, physical and chemical characteristics of straw fiber were investigated firstly. The usage of straw fiber in rotary hearth furnace process for direct reduced iron production was then discussed. The results show that on one hand, fixed carbon content in straw fiber is low, which is unfavorable for the productivity of direct reduced iron; on the other hand, ash and sulfur content is also low, which improves the quality of direct reduced iron. Besides, the fibrous structure is conducive to improving the pelletizing performance of carbon-containing pellets, thus reducing an additional amount of binder. Compared with common reducing agents, straw fiber provides better reduction effect, and straw fiber carbon-containing pellets possess higher compressive strength and larger volumetric shrinkage, which is beneficial to increase the thickness of the whole material layer in rotary hearth furnace. In addition, these carbon-containing pellets also have advantages of lowering C/O ratio and shortening reduction time. The appropriate C/O and reduction time are 0.8 and 15 min, respectively, and the particle size of straw fiber below 0.15 mm has better reduction effect. This study aims to provide theoretical and technical basis for the utilization of straw fiber in rotary hearth furnace process
Foucault’s governmentality and the issue of project collaboration
No full textThe concept of governmentality has proven useful to analyse how the reflexive management of people within and without the project is conducted. In this chapter we explore the organizational theory of governmentality and its importance in project settings. First, we identify the specificity of project governance and relate it to the definition and discussion of governmentality by Michel Foucault. Following this, the use of governmentality within projects through project culture is discussed. Subsequently, the use of governmentality outside projects through social media is discussed. Finally, the chapter concludes by highlighting new directions for research with governmentality as the focal point, discussing the types of research questions that a concern with projects and governmentality raises and how addressing these might further develop project management as a field of enquiry.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Integral Design & Managemen
Project narratives: Directions for research
No full textThis Research Handbook provides a cutting-edge review of complex project organizing (CPO), and suggests fruitful avenues for future research with a focus on grand challenges and a sustainable future.
Split into four sections, this Research Handbook addresses transitions within the field of CPO that could, and should, take place to achieve our shared aspirations for a better future. Featuring a team of contributors that is both interdisciplinary and geographically widespread, chapters provide a clarification of core concepts of complex project organizing, comprehensive coverage of leading theoretical perspectives for CPO, as well as a discussion of key empirical research themes. In particular, special attention is given to the implications of Industry 4.0 for complex project organizing.
The Research Handbook on Complex Project Organizing develops a guiding path to help academics – both established and early career – and research students in the fields of business leadership, operations management, and knowledge management navigate through these important topics, and envision how to respond to the grand challenges we all face
Mechanism and Influencing Factors of Iron Nuggets Forming in Rotary Hearth Furnace Process at Lower Temperature
No full text
In order to improve the efficiency of slag and iron separation, a new idea of "the separation of slag (solid state) and iron (molten state) in rotary hearth furnace process at lower temperature" is put forward. In this paper, the forming process of iron nuggets has been investigated. Based on those results, the forming mechanisms and influencing factors of iron nugget at low temperature are discussed experimentally using an electric resistance furnace simulating a rotary hearth furnace process. Results show that the reduction of iron ore, carburization of reduced iron, and the composition and quantity of slag are very important for producing iron nuggets at lower temperature. Reduction reaction of carbon-containing pellets is mainly at 1273 K and 1473 K (1000 A degrees C and 1200 A degrees C). When the temperature is above 1473 K (1200 A degrees C), the metallization rate of carbon-containing pellets exceeds 93 pct, and the reduction reaction is substantially complete. Direct carburization is the main method for carburization of reduced iron. This reaction occurs above 1273 K (1000 A degrees C), with carburization degree increasing greatly at 1473 K and 1573 K (1200 A degrees C and 1300 A degrees C) after particular holding times. Besides, to achieve the "slag (solid state) and iron (molten state) separation," the melting point of the slag phase should be increased. Slag (solid state) and iron (molten state) separation can be achieved below 1573 K (1300 A degrees C), and when the holding time is 20 minutes, C/O is 0.7, basicity is less than 0.5 and a Na2CO3 level of 3 pct, the recovery rate of iron can reach 90 pct, with a proportion of iron nuggets more than 3.15 mm of nearly 90 pct. This study can provide theoretical and technical basis for iron nugget production.</p
The Sinews of State Power: The Rise and Demise of the Cohesive Local State in Rural China by Juan Wang
No full textMinimum-cost information dissemination in social networks
No full textSource type: Electronic(1) International Conference on Wireless Algorithms, Systems, and ApplicationsIn a social network, when the number of users discussing a topic exceeds a critical threshold, the topic will have a serious impact on the corresponding community. In this paper, we consider the problem of finding the minimum set of initial users of a topic to propagate a message so that, with a given guaranteed probability, the number of users discussing the topic would reach the critical threshold. This study is formally called the Minimum-Cost Information Dissemination (MCID) problem in our research. Different from the influence maximization problem, the MCID problem attempts to achieve influence maximization from the minimum cost perspective. To tackle the problem, we proposed a novel method based on h-hop independent set, HISS. Based on the independent set, HISS guarantees that the source nodes are sparsely distributed in the network. In addition, since HISS utilizes h-hop graph transformation, it can reduce the number of source nodes and avoid the scenarios in which the source nodes have common neighbors. The proposed method was evaluated with two real networks. The experimental results indicate that our proposed algorithm outperforms the state-of-the-art algorithms
The Relationship between Intellectual Capital and Corporate Performance in Chinese Bio-pharmaceutical Industry
No full textWith the advent of the knowledge economy, intellectual capital is playing an increasingly important role in the enterprise. Research on the relationship between intellectual capital and corporate performance has important theoretical and practical significance for enterprise to manage and use intellectual capital. Paper selected bio-pharmaceutical A-share listed companies’ data from 2008~2012, and used the method of factor analysis and correlation analysis to verify the relationship between intellectual capital and corporate performance. According to the results, the following conclusion can be made. In bio-pharmaceutical industry, intellectual capital and corporate performance have significant positive correlation, but the degree of correlation is weaker than physical capital. Human capital and structural capital have significant positive correlation with corporate performance. Customer capital and corporate performance are positive related, but not significant. The various components of intellectual capital impact each other, and produce an effect on corporate performance together
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