上海·陆俨少艺术院 第二届“陆俨少奖”全国中国画获奖作品及部分入选作品展

11月11日下午,第二届＂陆俨少奖＂全国中国画获奖作品及部分入选作品展在上海陆俨少艺术院举办了展览观摩仪式,浙江画院、嘉定区政府领导及众多上海知名艺术家应邀出席了观摩仪式。此外展览还吸引了众多书画爱好者前来参观,引起热烈的反响。此次展览为第二届＂陆俨少奖＂全国中国画展的第二站,也是自筹办＂陆俨少奖＂以来第一次移展上海。

一种高分辨率高信噪比处理技术

本文提出了一种新的高分辨率、高信噪比的处理方法。它可以在不受时窗的影响下,在同一程序里完成时空域内自动检测有效地震信号,并对检测出的高信噪比地震信号,使用大波峰、波谷位置的谱移展法来提高其分辨率。经本方法处理后,信噪比可提高为原来的■倍(n为调向叠加道数),分辨率提高为原来的0.85(K-1)倍(K为分辨率控制系数)。该方法对理论记录和不同地区实际资料的处理取得了明显的效果,并且特别适用于低信噪比地区的薄层油气藏勘探。

Analysis and optimization of power spectrum on EBPSK modulation in throughput-efficient wireless system

In order to satisfy increasingly greater demand for the performance of communication systems, a throughput efficient wireless system based on the extended binary phase shift keying （EBPSK） modulation is presented. Simultaneously, corresponding analysis of power spectra is also given with a brief process. The optimal waveform is proposed without useful information loss, by removing linear spectra presenting periodic components. On this basis, the reasonable definition of bandwidth is discussed, which indicates that the EBPSK belongs to the category of the ultra narrow band （UNB） throughput-efficient communication. Meanwhile, the modulation parameters＇ effects on bandwidth, transmission rate and transmission performance are analyzed. Results illustrate the validity of theoretical analysis and spectrum optimization. Results also prove that this UNB system can obtain good bit error rate （BER） performance with high spectra efficiency.

Migration scheme for imaging offset VSP data within local phase space

The imaging of offset VSP data in local phase space can improve the image of the subsurface structure near the well.In this paper,we present a migration scheme for imaging VSP data in a local phase space,which uses the Gabor-Daubechies tight framebased extrapolator（G-D extrapolator） and its high-frequency asymptotic expansion to extrapolate wavefields and also delineates an improved correlation imaging condition in the local angle domain.The results for migrating synthetic and real VSP data demonstrate that the application of the high-frequency G-D extrapolator asymptotic expansion can effectively decrease computational complexity.The local angle domain correlation imaging condition can be used to weaken migration artifacts without increasing computation.

A new detector in EBPSK communication system

In order to raise the detection precision of the extended binary phase shift keying （EBPSK） receiver, a detector based on the improved particle swarm optimization algorithm （IMPSO） and the BP neural network is designed. First, the characteristics of EBPSK modulated signals and the special filtering mechanism of the impacting filter are demonstrated. Secondly, an improved particle swarm optimization algorithm based on the logistic chaos disturbance operator and the Cauchy mutation operator is proposed, and the EBPSK detector is designed by utilizing the IMPSO-BP neural network. Finally, the simulation of the EBPSK detector based on the MPSO-BP neural network is conducted and the result is compared with that of the adaptive threshold-based decision, the BP neural network, and the PSO-BP detector, respectively. Simulation results show that the detection performance of the EBPSK detector based on the IMPSO-BP neural network is better than those of the other three detectors.

China’s Industrial Upgrading and Value Chain Restructuring Under the New Development Pattern

Global industrial chains(GICs)have become a hallmark of the world economy underpinning the global production cycle.Since the reform and opening up was introduced in 1978,China has taken an active role in global value chains(GVCs)and become the world’s factory floor.Under the external shocks to GICs,such as US trade frictions with China and the COVID-19 pandemic,China’s traditional comparative advantages in manufacturing which include its labor force and costs are waning.This has manifested in a wave of industrial relocations from China to other countries as well as China’s weakening international competitiveness.We took stock of the concepts and journey of GVCs and elaborated the intrinsic relationship between GVCs and the new development pattern of“dual circulations”.We also analyzed the trends of GVCs,the current status and problems of China’s industrial chains,and China’s market heft,complete industrial chains and the digital economy as new strengths for industrial chain upgrade.In our conclusion,this paper put forth some policy recommendations for China’s industrial chain upgrade in the context of dual circulations.

Future Mobile Terminal and Network Access Architecture for China 4G Open Mobile Communications

This paper relates to an advanced open mobile communication system and method of integrating the mobile communications, wireless access systems and wired communications into one common platform architecture for China's 4th generation mobile communications, supporting costeffective broadband voice, data and video services in wireless, mobile and wired environment with one single integrated mobile terminal device. The paper includes new architecture in the integrated mobile device and converged network access, and minimum modifi cation in the existing mobile telecommunication infrastructures. This paper introduces the long-term evolution strategy for China's TDD system platform towards China's future 4G mobile communications.

Finite element simulation of stress intensity factors in elastic-plastic crack growth

A finite element program developed elastic-plastic crack propagation simulation using Fortran language. At each propagation step, the adaptive mesh is automatically refined based on a posteriori h-type refinement using norm stress error estimator. A rosette of quarter-point elements is then constructed around the crack tip to facilitate the prediction of crack growth based on the maximum normal stress criterion and to calculate stress intensity factors under plane stress and plane strain conditions. Crack was modelled to propagate through the inter-element in the mesh. Some examples are presented to show the results of the implementation.

Scalable and Identifier/Locator-Splitting Routing Protocol for Mobile Ad Hoc Networks

In the traditional Intemet Protocol （IP） architecture, there is an overload of IP sermntic problems. Existing solutions focused mainly on the infrastructure for the fixed network, and there is a lack of support for Mobile Ad Hoc Networks （MANETs）. To improve scalability, a routing protocol for MANETs is presented based on a locator named Tree-structure Locator Distance Vector （TLDV）. The hard core of this routing method is the identifier/locator split by the Distributed Hash Table （DHT） method, which provides a scalable routing service. The node locator indicates its relative location in the network and should be updated whenever topology changes, kocator space ks organized as a tree-structure, and the basic routing operation of the TLDV protocol is presented. TLDV protocol is compared to some classical routing protocols for MANETs on the NS2 platform Results show that TLDV has better scalability. Key words：

STUDY ON BEIJING'S EMERGING MOBILE COMMUNICATION INDUSTRIAL CLUSTER AND ITSPOLICY IMPLICATIONS

This paper is a preliminary and illustrative case study of Beijing's emergingmobile communication industrial (MCI) cluster, which helps understand the cluster by qualitativeanalysis and description. Beijing's MCI cluster is emerging as far as the competence of the industryand its spatial concentration are concerned, although it is not the type of the cluster describedby PORTER due to the low competence of indigenous firms. The formation of the cluster can beexplained by means of the factor and demand conditions of Beijing. However, it is mostly determinedby the multinationals that promote the growth of the industry and the formation of the cluster, andby the government that also plays a key role in many ways. As a matter of fact, the interactionbetween the multinationals and the local government is the key to understanding the formation of thecluster. All in all, Beijing's emerging MCI cluster is a value-chain, geographically concentratedbut non-localized cluster, which is highly dominated by the multinationals and the local government.Its special characteristics bear some policy implications as to the change of the roles of thelocal government and the localization of multinationals, etc.

China’s National Research Project on Future Internet: Objectives, Ideas, and Progresses

The Internet today was designed in 1970s and is suffering various serious issues such as security, mobility and scalability. In order to deal with these issues, a national research project, supported by the prestigious National Basic Research Program (also called the "973 program") of China, was launched in May 2007. This project adopts a clean-slate approach and aims to design a novel future Internet that not only inherits the merit of the Internet today but also overcomes the drawbacks of the current Internet. In this paper, we make an overview of this project with a focus on its objectives, basic ideas, and progresses. Although this is a basic research project, its success will bring significant benefits to China as well as all other countries in the world.

Impact on Mountainous Agricultural Development in the Three Gorges Reservoir Area forced by Migrants of the Three Gorges Project

The Three Gorges Project attracts worldwide attention because of the Three Gorges migrants, and the agriculture of the Three Gorges Reservoir Area is a foundation for the development of the Three Gorges migrants. The Three Gorges Reservoir Area is situated at the mountainous area with bad agricultural development conditions and relatively low levels of development. As a result, the large-scale migration fias special influence on its agricultural development, which has attracted much attention. The paper analyzes influence that the migrants have forced on its agricultural development based on the scientific data, and makes some explorations on the models that are suitable for the development of mountainous agriculture in the Three Gorges Reservoir Area.

A Dormant Multi-Controller Model for Software Defined Networking

In order to improve the scalability and reliability of Software Defined Networking(SDN),many studies use multiple controllers to constitute logically centralized control plane to provide load balancing and fail over.In this paper,we develop a flexible dormant multi-controller model based on the centralized multi-controller architecture.The dormant multi-controller model allows part of controllers to enter the dormant state under light traffic condition for saving system cost.Meanwhile,through queueing analysis,various performance measures of the system can be obtained.Moreover,we analyze the real traffic of China Education Network and use the results as the parameters of computer simulation and verify the effects of parameters on the system characteristics.Finally,a total expected cost function is established,and genetic algorithm is employed to find the optimal values of various parameters to minimize system cost for the deployment decision making.

Research on customer knowledge transferring mode and mechanism in internet-based new product development

With the development of internet technology, customers play more and more important roles in new product development. The paper defines customer knowledge; then analyses the modes of customer knowledge transferring based on SECI model and information emission model. Finally customer knowledge transferring mechanism is discussed.

VEHICULAR NODE POSITIONING BASED ON DOPPLER-SHIFTED FREQUENCY MEASUREMENT ON HIGHWAY

Vehicular node positioning needs to be quick and precise on highway for safety considera-tion.In this paper,we present a novel and practical vehicular node positioning method which can achieve a higher accuracy and more reliability than the existing global-positioning-system-based po-sitioning solutions by making use of Doppler-shifted frequency measurements taken by vehicular node itself.This positioning method uses infrastructure nodes which are placed on the roadside every several kilometers as radiation sources to estimate the relative distances of vehicle to the infrastructure node.Through coordinate conversion,we get the absolute coordinates of vehicular node based on known absolute coordinates of infrastructure node.We also analyze the optimal distance of neighbor infra-structure nodes in order to ensure a high accuracy.In addition,simulation results demonstrate that the accuracy of our method with Extended Kalman Filtering(EKF) is superior to the method without EKF.

SMS-Parking Service Introduced in Oman

Mobile computing has increased quite rapidly over the past few years. The major drivers of mobile computing are large number of mobile phone users. As their number is increasing worldwide, different organizations are offering their services using the mobile devices. Oman is a developing country that strives to adapt M-services. The number of mobile phone users in Oman increased substantially since its launch in 1996. Prepaid mobile services and SMS （Short Message Services） were introduced in 2001 and both are currently popular with subscribers. Such fine appeal influenced many government organizations to go mobile with their services. This paper describes the SMS-Parking service, which is introduced recently by a joint venture of the Muscat Municipality and the Oman Mobile company offering mobile services to its citizens and reports the initial feedback of its users. This study shows that the new service is not yet popular among its users and may need their more positive attitudes toward it for its quick adoption.

Immigration and Liberal Egalitarianism

My principal objective in this paper is to examine what position liberal egalitarians should take regarding the issue of immigration. Given that liberal egalitarians grant central importance to individual autonomy and the moral equality of all persons, their rejection of restrictive immigration policies appears to follow from these central normative commitments. Liberal egalitarians such as Joseph Carens and Phillip Cole have argued that those who are committed to individual autonomy and moral equality should advocate for an open borders position in immigration. I argue that it is a serious mistake for liberal egalitarians to advocate open national borders and that borders should instead be strategically regulated to reduce global economic inequalities through immigration policies systematically integrated into development programs for the poorest and most vulnerable countries. Open borders would create an open market for immigration slots to choice countries of destination, which out of practical necessity would have to delimit the number of new immigrants. It is well known in migration studies that those who are more educated, young, and have more resources are more likely to migrate than the very young, the elderly, the infirm, and the poorest individuals. Those left behind in developing countries suffer serious negative consequences from the emigration of the most highly educated, capable, and talented individuals in their society. I then argue that liberal egalitarians should grant particular moral consideration to the world＇s poorest and most vulnerable and that immigration policies strategically designed to prioritize their needs are actually more consistent with the dual commitments of individual autonomy and moral equality than an open borders position. I propose three principles of global justice that are consistent with liberal egalitarianism that should guide transnational moral obligations. I end the paper by arguing that two of these principles can be used to justify restricted immigration policies that would enable developed countries to partially discharge some of their moral obligations to developing countries while enhancing the autonomy of the world＇s most vulnerable people.

The sustainability and transition of economic growth in China:from a perspective of factor structure

After more than 20 years＇ high speed growth, the sustainable growth of Chinese economy faces serious limitation of resources and factors now and in the future. In order to maintain the economic growth. China has to trans-form the way of economic growth, Based on the analysis on the related theories of economic growth and the structural transformation in factors of production, this paper proposes that the transformation of the economic growth way has to impel the optimization and the promotion of the utilization structure of factors of production. Finall.v, based on the analysis of the necessity to change the pattern of economic growth, this paper proposes＇ the strategic measures to promote the continuous economic growth and the transformation of patterns of economic growth.

The Education of the Children of Immigrants： A Cross-Cultural Study Between New York and Rome

Teachers of CLD （culturally and linguistically diverse） public school students New York and Rome, Italy were interviewed about their work with this unique, growing subset of learners. The 12 teachers＇ stories highlight myriad issues facing educators across the globe. Each teacher had recently participated in a research-based and government-sponsored professional development program focused on second language acquisition and culturally responsive pedagogy. Themes emerged through the analysis of individual interviews and classroom observations. These findings highlight teachers＇ perceptions of effective professional development, along with identification of institutional barriers impeding the delivery of best practices to CLD students. Cross-cultural comparisons are made which suggest an inconsistency in educational services for CLD students, along with an urgent need for professional development courses for teachers and administrators. The educators＇ voices shed light on both the challenges and rewards associated with this important work.

An analysis of environmental risks in Sichuan Province to relocate the textile industry from east China

The trend of transferring eastern textile industry to western regions in China is increasingly obvious.As for Sichuan Province,it is a chance to promote economic development and upgrade the textile industry through the incident compared with the other western regions.This paper analyzes the risk to environment in Sichuan Province when accepting the transfer and puts forwards relevant measures to this point.