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Search Results: 1 - 10 of 32792 matches for " Fan Chang "
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The Scientificalization and Vulgarization of Marxism in the 20th Century: A Critical Analysis on K. Popper’s Critique of Marxism  [PDF]
Fan Chang
Open Journal of Philosophy (OJPP) , 2013, DOI: 10.4236/ojpp.2013.34069
Abstract: Marxism was indeed vulgarized due to scientism in the 20th century, which even limits the development of Chinese social theories nowadays. This paper put forward the idea that it was serious misunderstanding to interpret Marx as prophet or inventor like empiricists who regard finding out eternal laws as the goal of science. In fact, Marx did not propose any so-called “natural laws of historical development”. He articulated that the only thing worth to do was to take note of what happened before his eyes and to become its mouthpiece. Thus, to understand science in the face of social practice, to analyze everything historically and never to thrust “eternal” laws in any era should be taken as the core of Marx’s new science, which is very important to China today.
Advances in Anti-tumor Activity of Indole-3-carbinol
Chang GE,Saijun FAN
Chinese Journal of Lung Cancer , 2009,
A Method for Assessing Customer Harmonic Emission Level Based on the Iterative Algorithm for Least Square Estimation  [PDF]
Runrong Fan, Tianyuan Tan, Hui Chang, Xiaoning Tong, Yunpeng Gao
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.59B002
Abstract: With the power system harmonic pollution problems becoming more and more serious, how to distinguish the harmonic responsibility accurately and solve the grid harmonics simply and effectively has become the main development direction in harmonic control subjects. This paper, based on linear regression analysis of basic equation and improvement equation, deduced the least squares estimation (LSE) iterative algorithm and obtained the real-time estimates of regression coefficients, and then calculated the level of the harmonic impedance and emission estimates in real time. This paper used power system simulation software Matlab/Simulink as analysis tool and analyzed the user side of the harmonic amplitude and phase fluctuations PCC (point of common coupling) at the harmonic emission level, thus the research has a certain theoretical significance. The development of this algorithm combined with the instrument can be used in practical engineering.
A Simple On-Chip Automatic Tuning Circuit for Continuous-Time Filter  [PDF]
Chia-Hsiung KAO, Ping-Yu TSAI, I-Fan CHANG
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.31009
Abstract: A simple on-chip automatic frequency tuning circuit is proposed. The tuning circuit is modified from voltage-controlled filter (VCF) frequency tuning circuit. We utilize an operational transconductance amplifier and a capacitor to from a single-time constant (STC) circuit which can produce a controllable delay time clock to tune the frequency of the filter. It can efficiently reduce the deviations in the 3 dB bandwidth from the variations of PVT (Process, Voltage and Temperature). The design of the STC circuit is simpler than VCF and it has less chip area. The chip has been implanted using TCMC 0.35 μm CMOS technology and the power consumption is less than 9.05 mW.
Maximizing Resilient Throughput in Peer-to-Peer Network  [PDF]
Bo Liu, Fan Qiu, Yanchuan Cao, Bin Chang, Yi Cui, Yuan Xue
Communications and Network (CN) , 2011, DOI: 10.4236/cn.2011.33021
Abstract: A unique challenge in P2P network is that the peer dynamics (departure or failure) cause unavoidable disruption to the downstream peers. While many works have been dedicated to consider fault resilience in peer selection, little understanding is achieved regarding the solvability and solution complexity of this problem from the optimization perspective. To this end, we propose an optimization framework based on the generalized flow theory. Key concepts introduced by this framework include resilience factor, resilience index, and generalized throughput, which collectively model the peer resilience in a probabilistic measure. Under this framework, we divide the domain of optimal peer selection along several dimensions including network topology, overlay organization, and the definition of resilience factor and generalized flow. Within each sub-problem, we focus on studying the problem complexity and finding optimal solutions. Simulation study is also performed to evaluate the effectiveness of our model and performance of the proposed algorithms.
Ribosomal proteins expression and phylogeny in alpaca (Lama pacos) skin  [PDF]
Junming Bai, Ruiwen Fan, Shanshan Yang, Yuankai Ji, Jianshan Xie, Chang-Sheng Dong
Advances in Bioscience and Biotechnology (ABB) , 2012, DOI: 10.4236/abb.2012.33032
Abstract: Ribosomal proteins (RP) has been reported as a central player in the translation system, and are required for the growth and maintenance of all cell kinds. RP genes form a family of homologous proteins that express in the stable pattern and were used for phylogenetic analysis. Here we constructed a cDNA library of alpaca skin and 13,800 clones were sequenced. In the cDNA library, RP genes from skin cDNA library of alpaca were identified. Then 8 RP genes were selected at random and built the phylogenetic trees from the DNA sequences by using parsimony or maximum likelihood methods for molecular and evolutionary analysis of ribosomal proteins. The results showed that the 42 RP genes of alpaca have been expressed in alpaca skin. They were highly conserved. The phylogeny inferred from all these methods suggested that the evolutionary distances of alpaca RP genes were closer to rat.
Construction and Analysis of SSH-cDNA Library from Leaves of Susceptible Rubber Clone Resistant to Powdery Mildew Induced by BTH  [PDF]
Chanjuan Luo, Zhiwei Fan, Yide Shen, Xiaoxia Li, Hanting Chang, Qiaoqiao Huang, Lizhen Liu
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.43068

To understand the mechanism of benzothiadiazole (BTH)-induced susceptible rubber clone resistance to powdery mildew on gene level, a differentially expressed cDNA library was constructed by suppression subtractive hybridization (SSH) with rubber Reyan 7-33-97 clone. The constructed cDNA library was high integrity through detection of the critical processes of SSH, such as efficiency of adaptor connection, subtraction and conversion, as well as the type of recombinant genes. The positive rate was 99% after identification with random 400 white spots. The size of the cDNA clone inserted fragments was various but most in 400 bp - 1000 bp. There were 23 cDNA sequences matching the function of energy and basic metabolism, signal transduction, membrane and transport, secondary metabolism and so on after detection of the 42 positive clone sequences selected randomly from the cDNA library and comparison on nucleic acid sequences in Genbank. 7 ESTs were logged in Genbank and accession numbers were GW873071 and GW874604- GW874610. The results implicated that BTH could effectively induced rubber tree resistance to powdery mildew through increasing expresses of defense-related genes in leaves of rubber tree susceptible clone. It should provide a new approach for rubber disease management.

Research on the Model of Electric Vehicle Charging Device Based on PSCAD  [PDF]
Run-rong Fan, Tian-yuan Tan, Yun-peng Gao, Hui Chang
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B260

The following article has been retracted due to improper duplication. The Editorial Board takes a very strong respect to the author’s situation on this matter. This paper published in Energy and Power Engineering?Vol.5 No.4B, November 20, 2013, has been removed from this site.

Quantum gravity and mass of gauge field: a four-dimensional unified quantum theory
Chang-Yu Zhu,Heng Fan
Physics , 2009,
Abstract: We present in detail a four-dimensional unified quantum theory. In this theory, we identify three class of parameters, coordinate-momentum, spin and gauge, as all and as the only fundamental parameters to describe quantum fields. The coordinate-momentum is formulated by the general relativity in four-dimensional space-time. This theory satisfies the general covariance condition and the general covariance derivative operator is given. In an unified and combined description, the matter fields, gravity field and gauge fields satisfy Dirac equation, Einstein equation and Yang-Mills equation in operator form. In the framework of our theory, we mainly realize the following aims: (1) The gravity field is described by a quantum theory, the graviton is massless, it is spin-2; (2) The mass problem of gauge theory is solved. Mass arises naturally from the gauge space and thus Higgs mechanism is not necessary; (3) Color confinement of quarks is explained; (4) Parity violation for weak interactions is obtained; (5) Gravity will cause CPT violation; (6) A dark energy solution of quantum theory is presented. It corresponds to Einstein's cosmological constant. We propose that the candidate for dark energy should be gluon which is one of the elementary particles.
A quantum model of dark energy
Chang-Yu Zhu,Heng Fan
Physics , 2009,
Abstract: We propose a quantum model of dark energy. The proposed candidate for dark energy is gluon field, as is well-known, gluons are the elementary particles. We assume that gluons may not be completely massless but have tiny masses, thus the gluon field can provide a non-zero energy-momentum tensor. This model corresponds to Einstein's cosmological constant which is one of the generally accepted models for dark energy. Besides the gluon field, we also discuss the properties of electroweak boson field and compare our results with previous known results.
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