“区域”理论视域下的传播学研究创新路径

中国传播学研究要有创新必须先打破"西方中心主义"限制,这既是传播学科属性的要求,也是中国社会结构的某些特质属性的要求。"区域"理论反对传播研究中的"中心——边缘"模式和普遍主义做法,坚持依据具体的历史情境和结构性情境研究区域性的传播现象和传播问题,并尝试通过建构"区域化"的哲学假设、概念和解释模型,发展出与之相适应的表达方式或研究方法,这正是传播研究创新的一个新路径。

Generalized Uncertainty Principle and Black Hole Entropy of Higher-Dimensional de Sitter Spacetime

Recently, there has been much attention devoted to resolving the quantum corrections to the Bekenstein-- Hawking black hole entropy. In particular, many researchers have expressed a vested interest in the coetticient of the logarithmic term of the black hole entropy correction term. In this paper, we calculate the correction value of the black hole entropy by utilizing the generalized uncertainty prlnciple and obtain the correction term caused by the generalized uncertainty principle. Because in our calculation we think that the Bekenstein-Hawking area theorem is still valid after considering the generalized uncertainty principle, we derive that the coefficient of the logarithmic term of the black hole entropy correction term is positive. This result is different from the known result at present. Our method is valid not only for four-dimensional spacetimes but also for higher-dimensional spacetimes. In the whole process, the physics idea is clear and calculation is simple. It offers a new way for studying the entropy correction of the complicated spacetime.

Comparison of convective parameterizations in RegCM4 experiments over China with CLM as the land surface model

in the latest version of the international Centre for Theoretical Physics＇ regional climate model, RegCM4, CLM was introduced as a new land surface scheme. The performance over China of RegCM4-CLM with different convection schemes is analyzed in this study, based on a series of short- term experiments.The model is driven by ERA-Interim data at a grid spacing of 25 km.The convection schemes employed are： Emanuel; Grell; Emanuel over land and Grell over ocean; Grell over land and Emanuel over ocean; and Tiedtke. The simulated mean surface air temperature and precipitation in December-February-January and June-July-August are compared against observation. In general, better performance of Emanuel is found both for temperature and precipitation, and in both seasons. Thus, the model physics of CLM and Emanuel for the land surface processes and convection, respectively, are recommended for further application of RegCM4 over the China region. The de^ciencies that remain in the model arealso outlined and discussed.

Study on constructive system of green cave dwelling in Loess Plateau—Interpretation with the “regional gene” theory

This article reveals the inherent evolution adjusting mechanism of regional architecture by means of considering the concept and method of "regional gene" as the research approach of regional architecture construction system, and in the mean- while establishes the "gene database" of regional architecture and optimum technology, on the basis of the principle of sustainable development and scientific evaluation system. In addition, this article chooses the planning of model villages of cave dwellings in Loess Plateau and the construction of ecological cave dwellings for case study to prove the feasibility of the research approach.

Pest Detection Method Using Multi-Fractal Analysis

A novel method for pest detection is proposed based on the theory of multi-fractal spectrum to extract pests on plant leaves.Both local and global information of the image regularity were obtained by multi-fractal analysis.By applying fractal dimension,the spots on leaf images can be extracted without loosing or introducing any information.The different parts of images are re-analysis by morphology operations to determine the candidate regions of pests.The performance of multi-fractal analysis of whitefly detection is investigated through greenhouse experiments.The experimental results show that the proposed method is robust to noise from light and is not sensitive to the complex environment.

Digital regionalization of geomorphology in Xinjiang

This paper presents a method of geomorphologic regionalization for Xinjiang, with the use of Srtm-DEM (resolution 90 m) and TM images for 1990 (resolution 30 m). After interpretation and classification of geomorphologic types, the present research focuses on the qualitative and quantitative distribution of different geomorphologic types based on geographical grid analysis. Then, by using system clustering analysis method, geomorphologic types are grouped into divisions. The resulting geomorphologic regionalization hierarchy of Xinjiang includes three levels, i.e., macro-landform divisions, medium-landform divisions, and micro-landform divisions, containing 6, 23 and 200 types, respectively. This method makes it possible to digitally delimit geomorphologic regions. Comparison and verification show that the spatial precision of the boundaries of geomorphologic subareas in Xinjiang is very high.

The Flying Geese Paradigm:Industrial Upgrade Strategy and Balanced Regional Development

On the basis of competency-based comparative advantage theory and reclassification of industries,this paper has discussed whether the FGP-type industry upgrade has taken place across different regions of China and whether China is able to transcend the middle-income trap through the FGP-type industry upgrade.This paper has discovered that no matter by traditional method of industry classification or the new method of industry classification,China has already experienced the FGP-type industry upgrade and entered into the second stage of this process.While relocating industries to central and western regions,China's eastern region does not have clear directions of industry upgrade of its own.Through analysis on the evolution of comparative advantages across regions,this paper has also discovered that in the process of the FGP industry upgrade,China is facing the risk of falling into comparative advantage trap.These factors are unfavorable to China's implementation of the FGP-type industry upgrade strategy,prevention of the comparative advantage interruptions that may confront middle-income countries and achievement of balanced regional development.

Effect of mesoscale wind stress-SST coupling on the Kuroshio extension jet

Effect of mesoscale wind stress-SST coupling on the Kuroshio extension jet is studied using the Regional Ocean Modeling System. The mesoscale wind stress perturbation( τ_(MS)) is diagnostically determined from modelled mesoscale SST perturbation(SST_(MS)) by using their empirical relationship derived from corresponding observation. From comparing two experiments with and without the τ_(MS) feedback, it is found that the interactively represented τ_(MS)-SST_(MS) coupling can modulate the kinetic energy along the Kuroshio extension jet, with little effect on the Kuroshio pathway. Similar results are also obtained in three additional sensitivity experiments, which consider half strength of the τ_(MS), and the momentum flux and heat flux effect induced by τ_(MS), respectively. That means simply taking into account the τ_(MS)-SST_(MS) coupling has little effect on improving the simulation of the Kuroshio Current system.

On the Governance of the Arctic Region under the Tragedy of the Commons

Because of global climate change,the natural environment is rapidly changing in the Arctic.The large amount of sea ice melting in the Arctic can lead to a great increase in the use of the world’s natural resources.This thesis focuses on the exploration and utilization of public waters in the Arctic region based on the economic theory of the Tragedy of the Commons,analyzes the current situation of Arctic governance,and predicts potential problems in the Arctic region,mainly including overfishing and environmental problems caused by coal and natural gas exploitation.Additionally,it makes an in-depth analysis on the current Arctic governance model based on the Arctic Council,and finally proposes some countermeasures and suggestions for Arctic governance.

“区域文明”语境中西方殖民主义及其双重危害——以中国南海问题研究为中心

"区域文明"理论由汤因比、梅吉尔和中国史学家共同创立,它突出关注历史现象生成的时间与空间条件,重视诸多历史现象的区域语境及其在历史时间与社会背景之间的关联,重视诸多历史现象的整体性、独立性和排他性,并以此来显示"区域文明"自身的生命力。"区域文明"的变迁可以通过友善或敌对的方式来实现,并以旧的平衡的打破与新的平衡的建立来提升自己的品性。15世纪以后,中国南海"区域文明"的变化面对着西方殖民主义的入侵,这一野蛮的入侵在殖民主义时代与后殖民时代给中国人民带来了双重危害。由于殖民主义入侵的主体、方式和程度复杂多样,因此从不同视角以不同学科的跨界研究是从学理上解决南海问题的有效途径。当然,强大的国力尤其是军事与外交力量,是学术研究维护并捍卫中国海权的根本保证。

Re-interpretation of the classical geopolitical theories in a critical geopolitical perspective

Struggling for supremacy between great powers and the rise or fall and regime change of great powers are all subject to the Geopolitical Law. Geographers should keep in step with the times, accurately grasp the national interests, and seize the opportunity to contribute to the great rejuvenation of our nation. However, due to lack of criticism on the history and philosophy of geopolitics, we can neither accurately understand the geopolitical theory, nor effectively put the geopolitical theory into practice. This paper introduces the development of critical geopolitics, summarizes the three characteristics of critical geopolitics, and interprets the four classical geopolitical theories accordingly. In order to simplify the interpretation process, this paper firstly presents an analytical framework for interpretation of four classical geopolitical theories; secondly, focuses on interpretation of "The Geographical Pivot of History" put forward by Mackinder according to the analytical framework; finally, critically summarizes the four classical geopolitical theories. Through the critical interpretation, this paper draws a conclusion that there are the scientific, hypothetical and conceptual classical geopolitical theories. The construction of classical geopolitical theories is based on the international geopolitical structure, spatial distribution of national interests and inter-state spatial conflict, in order to show the identity of theoretical constructor, so as to reflect the historicality, sociality, situationality and geographical knowledge – power structure of geopolitical theories.