The problem of wave scattering by undulating bed topography in a two-layer ocean is investigated on the basis of linear theory. In a two-layer fluid with the upper layer having a free surface, there exist two modes of...The problem of wave scattering by undulating bed topography in a two-layer ocean is investigated on the basis of linear theory. In a two-layer fluid with the upper layer having a free surface, there exist two modes of waves propagating at both the free surface of the upper layer and the interface between the two layers. Due to a wave train of a particular mode incident on an obstacle which is bottom-standing on the lower layer, reflected and transmitted waves of both modes are created by the obstacle. For small undulations on the bottom of the lower layer, a perturbation method is employed to obtain first-order reflection and transmission coefficients of both modes for incident wave trains of again both modes in terms of integrals involving the bed-shape fimction. For sinusoidal undulations, numerical results are presented graphically to illustrate the energy transfer between the waves of different modes by the undulating bed.展开更多
In this paper, I examine Steve Fuller's "sociological" social epistemology that must be distinguished from its "philosophical" counterpart. Fuller's sociological social epistemology can prompt deep philosophical...In this paper, I examine Steve Fuller's "sociological" social epistemology that must be distinguished from its "philosophical" counterpart. Fuller's sociological social epistemology can prompt deep philosophical analyses of the conditions for knowledge that themselves bear on what should count as knowledge. That is, it can be a vital prelude to developing an interdisciplinary investigation into educational issues. This paper looks at the three features that form an integral part of Fuller's social epistemology, which is partly elucidatory and partly critical: naturalistic, normative, and organizational aspects. It goes on to explore whether and to what extent Fuller's criticism of an "always already" thesis in philosophy and his idea of "knowledge management" afford an understanding of human knowledge in particular and human development in general. This paper concludes with an observation that Fuller's social epistemology is flawed in some respects but nonetheless is of relevance to the philosophical study of education.展开更多
Using the Nevanlinna value distribution theory of meromorphic function,we investigate the existence problem of admissible solutions of higher-order algebraic differential equations systems,and obtain a result concerni...Using the Nevanlinna value distribution theory of meromorphic function,we investigate the existence problem of admissible solutions of higher-order algebraic differential equations systems,and obtain a result concerning admissible components of solution.展开更多
Nowadays, the public sector plays an important role when it comes to economic development and growth of a country. The most important chapter is "the evaluation of public servants". The analysis for the evaluation a...Nowadays, the public sector plays an important role when it comes to economic development and growth of a country. The most important chapter is "the evaluation of public servants". The analysis for the evaluation and subsequently the personal development and career planning of human resources based on both academic theories and their practical implementation. The new model is based on proportionality and administrative Europeanization, which creates formal and informal rules, modern processes of public policy that will shape common beliefs and values incorporated in the specific national policies. Performance appraisal is the process by which organizations evaluate job performance. The aim of this paper is to provide a comprehensive narration for the performance management in modem public sector, to explain the uses of performance appraisals, to describe the methods of the evaluation and to analyze the role of evaluation.展开更多
Entrepreneurs have a unique status in Hong Kong, who are seen as world leaders in building and developing its economy. These entrepreneurs constitute a majority of businesses and employ a significant part of the popul...Entrepreneurs have a unique status in Hong Kong, who are seen as world leaders in building and developing its economy. These entrepreneurs constitute a majority of businesses and employ a significant part of the population, thus, they are vital for the economy of Hong Kong. This research looks into and studies this phenomenon to evaluate the various components of the success of these entrepreneurs and to draw conclusions that will benefit the educators, the legislators as well as the new entrants who wish to become entrepreneurs. By interviewing Hong Kong entrepreneurs, it has been found that the main source of entrepreneurial success in Hong Kong is of very complex origin. The Hong Kong's entrepreneurs seem to succeed, when they are able to blend the best qualities of the East and the West. Based on the research outcomes, the perceptions, achievements, strategies, and traits (PAST) model has been developed to assist Hong Kong entrepreneurs in the future.展开更多
This paper is about the model of masculinity exhibited in the African American novelist Frank Yerby's historical novel The Dahomean (1971) which is a classic text for masculinity study but has been ignored. In a fl...This paper is about the model of masculinity exhibited in the African American novelist Frank Yerby's historical novel The Dahomean (1971) which is a classic text for masculinity study but has been ignored. In a flash-back narration, the novel tells us the legendary experience of Nyasanu in Africa before he becomes a slave in the south of America, portrays a well-rounded and authentic Black male character, and constructs a model of masculinity of great value for reference. The model of masculinity demonstrated by Nyasanu is no longer limited by the rigid and unitary stipulations of traditional gender concept. It is a model which integrates tenderness into toughness, combines physical power or military prowess with mental power or wisdom, and most importantly, a model that stresses men's agency and authenticity. At the same time, by the resentment of war and cherishement of life, this model of masculinity exhibits considerable ethical dimension and humanitarianism. It can be said that the model of masculinity inscribed in The Dahornean is of much enlightening importance for contemporary people to reflect upon the patriarchal culture and prevalent gender notions such as gender role concept. As for people's pursueing and constructing their ideal masculinity, the model of masculinity embodied in The Dahomean can be an important model for reference.展开更多
There are about 19 Neolithic Age sites and 120 Shang-Zhou dynasties sites in the western lakeshore of Chaohu Lake,Anhui Province,China.Based on sites data,topographic data,drainage maps,administrative maps and SPOT5 r...There are about 19 Neolithic Age sites and 120 Shang-Zhou dynasties sites in the western lakeshore of Chaohu Lake,Anhui Province,China.Based on sites data,topographic data,drainage maps,administrative maps and SPOT5 remote sensing data,spatial analysis methods were introduced into the archaeology of Chaohu Lake Basin with Geographic Information System(GIS).The spatial analysis methods include:1) Point Density Analysis with density model to acquire the shift of the sites;2) Distance Analysis to reveal the spatial structure of the sites;3) 3D Analysis based on Digital Elevation Model to get micro-geomorphologic features of the sites;and 4) Buffer Analysis to discover the relationship between the sites and rivers.The results indicate that the archaeological sites spread from the western lakeshore of Chaohu Lake gradually to the northwest,later to the south,and then symmetrically spread.Controlled by productive forces and other factors,ancient people preferred to reside in those places near water,or in plain and fertile land,which resulted in linear and decentralized distribution of the sites,and presented such disciplines as river valley directivity,terrace directivity and soil directivity.This paper indicates that the distribution of archaeological sites was influenced earlier by natural elements and later by human elements in the study period.The research is important for the integration of GIS and archaeology.展开更多
This paper briefly introduces the Seismotectonic Map of Xinjiang and its neighborhood in the scale of 1∶2500000.The map is amended,supplemented and expanded based of the newly compiled Seismotectonic Map of Xinjiang ...This paper briefly introduces the Seismotectonic Map of Xinjiang and its neighborhood in the scale of 1∶2500000.The map is amended,supplemented and expanded based of the newly compiled Seismotectonic Map of Xinjiang in scale 1∶1000000.The base map of this seismotectonic map is the geologic map of western China and its neighborhood compiled by Li Tingdong.The abundant new materials from related research,referential literatures and the analyses on remote sensing data were used in the compiling work.A database and relevant documents are built for nearly 300 active faults and 150 active folds.The basic information of the major active faults,especially those near the border areas in this map are introduced in this paper.展开更多
The priority of the EU transport policy in railway sector is to open up the railway market. The objective is to provide railway undertakings with access to the railway network on equal terms. The main problem is deter...The priority of the EU transport policy in railway sector is to open up the railway market. The objective is to provide railway undertakings with access to the railway network on equal terms. The main problem is determining the infrastructure capacity. A variety of methodologies are used across Europe for the capacity estimation of railway infrastructure. This diversity has forced railway infrastructure managers to seek a new, common methodology. The UIC methodology is an easy way to calculate the capacity consumption. However, there the possibility to expound this methodology in different ways, which can result in different capacity consumptions. There isan advantage to improve this methodology and to set a clear and unified method of occupation time estimation. The fundamental improvement to UIC methodology is the definition of the occupation time by the trains. This paper gives a description of Slovak and UIC methodologies as a basis for a newly developed approach. The new way of estimation of the capacity consumption (occupation time) is based on a graphic approach. The new methodology concerns the estimation of the infrastructure occupation time and is a conceptual framework developed by the authors for an easier evaluation of occupation time in train traffic diagrams. The new methodology makes the UIC methodology more usable and enables more exact results to be obtained from infrastructure capacity examination.展开更多
Some new imaging formulas for seismic reflection wave and theirtheoretical basis are given. Phenomena of wave propagation should be characterized by instantaneous spectrum and expressed by complex function of three va...Some new imaging formulas for seismic reflection wave and theirtheoretical basis are given. Phenomena of wave propagation should be characterized by instantaneous spectrum and expressed by complex function of three variables (time, space and frequency) in mathematics. Various physical parameters of medium are also complex functions of two variables (space and frequency). The relationship between reflection coefficient of medium and spectrum of reflected wave is given. Multi-reflection and filter of formations are considered in inversion formulas. Prob-lems in classical convolution model and wave equation are illustrated. All these inversion formulas can be used to image underground medium by wavelet transform and method of '3-basic colors'. Different colors mean different media.展开更多
The history of cultural exchange in prehistoric Eurasia(CEPE) has been widely investigated. Based on archaeological evidence, this process is thought to date back to at least the early Bronze Age, although details abo...The history of cultural exchange in prehistoric Eurasia(CEPE) has been widely investigated. Based on archaeological evidence, this process is thought to date back to at least the early Bronze Age, although details about timings and routes remain unclear. It is likely that CEPE promoted the spread and exchange of crops that originated in different parts of Eurasia; since these remains can be definitely identified and directly dated, they provide ideal research materials to explore the history of CEPE. In this paper, we review the available archaeobotanical evidence and direct radiocarbon dates for crop remains, alongside carbon isotopic data from human bones unearthed from prehistoric sites in Eurasia, in order to investigate the history of the spread of millet crops, and wheat and barley, that were first domesticated in the eastern and western parts of Eurasia during prehistoric times.In combination with other archaeological evidences, we discuss the history of CEPE. Our results suggest that wheat and barley were domesticated in western Asia around 10500 a BP, spread into Europe and western Central Asia before 8000 a BP, and reaching eastern Central Asia and northwestern China between 4500 and 4000 a BP. Data show that both broomcorn and foxtail millet were domesticated in eastern Asia before 7700 a BP, spread into eastern Central Asia between 4500 and 4000 a BP, and into western Asia and Europe prior to 3500 a BP. Wheat, barley, and millet crops were first utilized together in eastern Kazakhstan within Central Asia around 4400 a BP, the region where earliest CEPE is likely to have taken place. These crops were mixedly used mainly in eastern central Asia and northwest China between 4500 and 3500 a BP, and then across the Eurasia before 2200 a BP. The results of this study suggest that transcontinental CEPE might have been initiated during the fifth millennium, before intensifying during the Bronze Age to lay the foundations for the creation of the ancient Silk Road during the Han Dynasty(between 202 BC and 220AD).展开更多
文摘The problem of wave scattering by undulating bed topography in a two-layer ocean is investigated on the basis of linear theory. In a two-layer fluid with the upper layer having a free surface, there exist two modes of waves propagating at both the free surface of the upper layer and the interface between the two layers. Due to a wave train of a particular mode incident on an obstacle which is bottom-standing on the lower layer, reflected and transmitted waves of both modes are created by the obstacle. For small undulations on the bottom of the lower layer, a perturbation method is employed to obtain first-order reflection and transmission coefficients of both modes for incident wave trains of again both modes in terms of integrals involving the bed-shape fimction. For sinusoidal undulations, numerical results are presented graphically to illustrate the energy transfer between the waves of different modes by the undulating bed.
文摘In this paper, I examine Steve Fuller's "sociological" social epistemology that must be distinguished from its "philosophical" counterpart. Fuller's sociological social epistemology can prompt deep philosophical analyses of the conditions for knowledge that themselves bear on what should count as knowledge. That is, it can be a vital prelude to developing an interdisciplinary investigation into educational issues. This paper looks at the three features that form an integral part of Fuller's social epistemology, which is partly elucidatory and partly critical: naturalistic, normative, and organizational aspects. It goes on to explore whether and to what extent Fuller's criticism of an "always already" thesis in philosophy and his idea of "knowledge management" afford an understanding of human knowledge in particular and human development in general. This paper concludes with an observation that Fuller's social epistemology is flawed in some respects but nonetheless is of relevance to the philosophical study of education.
基金Supported by the NSF of Guagndong Province(04010474)
文摘Using the Nevanlinna value distribution theory of meromorphic function,we investigate the existence problem of admissible solutions of higher-order algebraic differential equations systems,and obtain a result concerning admissible components of solution.
文摘Nowadays, the public sector plays an important role when it comes to economic development and growth of a country. The most important chapter is "the evaluation of public servants". The analysis for the evaluation and subsequently the personal development and career planning of human resources based on both academic theories and their practical implementation. The new model is based on proportionality and administrative Europeanization, which creates formal and informal rules, modern processes of public policy that will shape common beliefs and values incorporated in the specific national policies. Performance appraisal is the process by which organizations evaluate job performance. The aim of this paper is to provide a comprehensive narration for the performance management in modem public sector, to explain the uses of performance appraisals, to describe the methods of the evaluation and to analyze the role of evaluation.
文摘Entrepreneurs have a unique status in Hong Kong, who are seen as world leaders in building and developing its economy. These entrepreneurs constitute a majority of businesses and employ a significant part of the population, thus, they are vital for the economy of Hong Kong. This research looks into and studies this phenomenon to evaluate the various components of the success of these entrepreneurs and to draw conclusions that will benefit the educators, the legislators as well as the new entrants who wish to become entrepreneurs. By interviewing Hong Kong entrepreneurs, it has been found that the main source of entrepreneurial success in Hong Kong is of very complex origin. The Hong Kong's entrepreneurs seem to succeed, when they are able to blend the best qualities of the East and the West. Based on the research outcomes, the perceptions, achievements, strategies, and traits (PAST) model has been developed to assist Hong Kong entrepreneurs in the future.
文摘This paper is about the model of masculinity exhibited in the African American novelist Frank Yerby's historical novel The Dahomean (1971) which is a classic text for masculinity study but has been ignored. In a flash-back narration, the novel tells us the legendary experience of Nyasanu in Africa before he becomes a slave in the south of America, portrays a well-rounded and authentic Black male character, and constructs a model of masculinity of great value for reference. The model of masculinity demonstrated by Nyasanu is no longer limited by the rigid and unitary stipulations of traditional gender concept. It is a model which integrates tenderness into toughness, combines physical power or military prowess with mental power or wisdom, and most importantly, a model that stresses men's agency and authenticity. At the same time, by the resentment of war and cherishement of life, this model of masculinity exhibits considerable ethical dimension and humanitarianism. It can be said that the model of masculinity inscribed in The Dahornean is of much enlightening importance for contemporary people to reflect upon the patriarchal culture and prevalent gender notions such as gender role concept. As for people's pursueing and constructing their ideal masculinity, the model of masculinity embodied in The Dahomean can be an important model for reference.
基金Under the auspices of National Natural Science Foundation of China (No 40571162)Education Department of Anhui Province Foundation (No 2007sk097)Natural Science Foundation of Anhui (No 090415212),Program for Innovative Research Team in Anhui Normal University
文摘There are about 19 Neolithic Age sites and 120 Shang-Zhou dynasties sites in the western lakeshore of Chaohu Lake,Anhui Province,China.Based on sites data,topographic data,drainage maps,administrative maps and SPOT5 remote sensing data,spatial analysis methods were introduced into the archaeology of Chaohu Lake Basin with Geographic Information System(GIS).The spatial analysis methods include:1) Point Density Analysis with density model to acquire the shift of the sites;2) Distance Analysis to reveal the spatial structure of the sites;3) 3D Analysis based on Digital Elevation Model to get micro-geomorphologic features of the sites;and 4) Buffer Analysis to discover the relationship between the sites and rivers.The results indicate that the archaeological sites spread from the western lakeshore of Chaohu Lake gradually to the northwest,later to the south,and then symmetrically spread.Controlled by productive forces and other factors,ancient people preferred to reside in those places near water,or in plain and fertile land,which resulted in linear and decentralized distribution of the sites,and presented such disciplines as river valley directivity,terrace directivity and soil directivity.This paper indicates that the distribution of archaeological sites was influenced earlier by natural elements and later by human elements in the study period.The research is important for the integration of GIS and archaeology.
基金Funded by the State Special Project for International Cooperation on Science and Technology(2012DFR20440K02)the 973 Program(2008CB4257)
文摘This paper briefly introduces the Seismotectonic Map of Xinjiang and its neighborhood in the scale of 1∶2500000.The map is amended,supplemented and expanded based of the newly compiled Seismotectonic Map of Xinjiang in scale 1∶1000000.The base map of this seismotectonic map is the geologic map of western China and its neighborhood compiled by Li Tingdong.The abundant new materials from related research,referential literatures and the analyses on remote sensing data were used in the compiling work.A database and relevant documents are built for nearly 300 active faults and 150 active folds.The basic information of the major active faults,especially those near the border areas in this map are introduced in this paper.
文摘The priority of the EU transport policy in railway sector is to open up the railway market. The objective is to provide railway undertakings with access to the railway network on equal terms. The main problem is determining the infrastructure capacity. A variety of methodologies are used across Europe for the capacity estimation of railway infrastructure. This diversity has forced railway infrastructure managers to seek a new, common methodology. The UIC methodology is an easy way to calculate the capacity consumption. However, there the possibility to expound this methodology in different ways, which can result in different capacity consumptions. There isan advantage to improve this methodology and to set a clear and unified method of occupation time estimation. The fundamental improvement to UIC methodology is the definition of the occupation time by the trains. This paper gives a description of Slovak and UIC methodologies as a basis for a newly developed approach. The new way of estimation of the capacity consumption (occupation time) is based on a graphic approach. The new methodology concerns the estimation of the infrastructure occupation time and is a conceptual framework developed by the authors for an easier evaluation of occupation time in train traffic diagrams. The new methodology makes the UIC methodology more usable and enables more exact results to be obtained from infrastructure capacity examination.
基金CNSF (Grant No. 69575010). The author would like to thank ZhaoQiangji of Daqing Oil Field for providing physical data and Chen Pin in Department of Computer Science of Shandong University for color drawing.
文摘Some new imaging formulas for seismic reflection wave and theirtheoretical basis are given. Phenomena of wave propagation should be characterized by instantaneous spectrum and expressed by complex function of three variables (time, space and frequency) in mathematics. Various physical parameters of medium are also complex functions of two variables (space and frequency). The relationship between reflection coefficient of medium and spectrum of reflected wave is given. Multi-reflection and filter of formations are considered in inversion formulas. Prob-lems in classical convolution model and wave equation are illustrated. All these inversion formulas can be used to image underground medium by wavelet transform and method of '3-basic colors'. Different colors mean different media.
基金supported by the National Natural Science Foundation of China (Grant Nos. 41620104007 & 41671077)the National Social Science Foundation of China (Grant No. 12&ZD151)the Fundamental Research Funds for the Central Universities (Grant No. LZUJBKY-2015-k09)
文摘The history of cultural exchange in prehistoric Eurasia(CEPE) has been widely investigated. Based on archaeological evidence, this process is thought to date back to at least the early Bronze Age, although details about timings and routes remain unclear. It is likely that CEPE promoted the spread and exchange of crops that originated in different parts of Eurasia; since these remains can be definitely identified and directly dated, they provide ideal research materials to explore the history of CEPE. In this paper, we review the available archaeobotanical evidence and direct radiocarbon dates for crop remains, alongside carbon isotopic data from human bones unearthed from prehistoric sites in Eurasia, in order to investigate the history of the spread of millet crops, and wheat and barley, that were first domesticated in the eastern and western parts of Eurasia during prehistoric times.In combination with other archaeological evidences, we discuss the history of CEPE. Our results suggest that wheat and barley were domesticated in western Asia around 10500 a BP, spread into Europe and western Central Asia before 8000 a BP, and reaching eastern Central Asia and northwestern China between 4500 and 4000 a BP. Data show that both broomcorn and foxtail millet were domesticated in eastern Asia before 7700 a BP, spread into eastern Central Asia between 4500 and 4000 a BP, and into western Asia and Europe prior to 3500 a BP. Wheat, barley, and millet crops were first utilized together in eastern Kazakhstan within Central Asia around 4400 a BP, the region where earliest CEPE is likely to have taken place. These crops were mixedly used mainly in eastern central Asia and northwest China between 4500 and 3500 a BP, and then across the Eurasia before 2200 a BP. The results of this study suggest that transcontinental CEPE might have been initiated during the fifth millennium, before intensifying during the Bronze Age to lay the foundations for the creation of the ancient Silk Road during the Han Dynasty(between 202 BC and 220AD).