论中国古代作者“超奇”说的批评学意义——王充《论衡·超奇》的作者理论研究

汉代王充《论衡·超奇》是中国古代首篇作者论,其中系统而全面地论述了作者理论和作者批评理论。王充作者论的核心是"超奇"说,这既是对作者身份的确立和对作者价值地位的认定,又是对作者构成要素的高度概括。我们可从"述"与"作"、"尚用"与"尚文"、"精诚"与"虚妄"、"珍古"与"惜今"等角度发掘其作者意识和作者批评意识,从而为作者批评理论的建设奠定基础。

F_q(T)上椭圆曲线的超奇素除子

本文表明在函数域Ｋ上椭圆曲线上的超奇素除子集合Ｓ*（Ｅ）具有与数域情形不同的特性，特别对Ｋ是有理函数城Fq（Ｔ）时，在多数情形下（即ｊ（Ｅ）Ｆｑ时），Ｓ＊（Ｅ）是有限集合．并且Ｆｑ（Ｔ）上存在椭圆曲线Ｅ（ｊ（Ｅ）Ｆｑ），使得Ｓ＊（Ｅ）包含Ｆｑ（Ｔ）的任意素除子有限集合Ｓ．对于Ｆｑ（Ｔ）的特征为２，３，５的情形，还可以构作Ｅ，使得Ｓ＊（Ｅ）＝Ｓ．

不规则边界上的近似超奇性边界积分方程

提出角点、棱边处不规则边界上的近似超奇性边界积分方程,其依据是边界上任一Cauchy或Hadamard主值积分可以由2个相应的近奇性边界积分的平均值近似表达.近似方程与光滑边界上的超奇性边界积分方程具有统一的表达形式,并且不需要正则化过程,有利于简化程序设计.给出的数值算例说明了近似方程的可行性与有效性.

沿曲线的超奇性奇异积分算子的L^p有界性

定义R2中超奇性奇异积分算子,其中(t,γ(t))是R2上的某类曲线.当γ″(t)和γ(t)在(0,∞)上非负(或非正)时,Hα,β为Lp(R2)有界.

超奇着装的符号学意义:希普霍普风格的经典诠释和结构性分析

希普霍普风格(hip-hop style)是与20世纪90年代说唱音乐文化相联系的一种充满争议的着装形式。人们对它的分析和诠释一直以符号学的结构性研究方法为基础。不同时间段中的符号学体系彼此分离,在建立这个体系中的诸多因素和所蕴含意义的关系方面,需要考虑三个编码操作(coding operations),即范式对齐(paradigmatic alignment)-极端的观点、外延意义和内涵意义(denotation and connotation)-字面的意义和延伸的意义、修辞手段(figurative devices)-暗含的喻义。研究结果依据希普霍普风格系统符号和常规着装系统符号间的辩证关系,揭示了这一体系的结构。常规着装体系的组成要素由此得以揭示,支持希普霍普系统的象征性语言也被描述了出来。希普霍普风格被当作一种与超奇着装设计相关的服装体系的范例加以分析,而这种风格与普通着装形式是对立的,这种分析对相关理论的发展有着积极的意义。

超奇积分的外推法

使用中矩形求积法则计算奇点在区间的内部的超奇积分的hadamard有限部分值,其误差被证明具有推广Euler-Maclaurin展开式.由于这个展开式包含有步长的负指数项,这意味求积法则是发散的.本文证明通过逐次Richardson外推不仅能够消去发散项,而且能够得到高精度近似值.

一类超奇性的奇异积分算子及其交换子的有界性

讨论R^n上一类超奇性的奇异积分算子的极大算子的(L_α~p,L^p)有界性,改进和推广了文献中的结果;同时应用非对角线的T1定理获得了交换子的(L^p,L^q)有界性。

二维位势自适应边界元中的一种误差估计方法

在前期线弹性研究工作的基础上,针对二维位势问题,提出一种新的误差指示来探测位势边界元分析的误差分布。这种误差估计是超奇位势导数边界积分方程的一种残余的度量。数值算例表明本文提出的误差指示成功地跟踪描述了真实误差,进而有效地引导了一个h型网格优化过程。

三维线弹性边界元中的一种新的误差指示

在前期二维问题的研究工作基础上,实现了三维线弹性问题的边界应力的高精度直接计算,并进而提出了一种三维情况下稳定有效的超奇残余误差指示。数值计算表明这种误差指示成功的追踪了普通边界元分析的真实误差。

作家论是王充文学批评思想核心——从元气论到才性论

王充由于否定“天”的主宰性,所以他从中看到了人的主体性的觉醒,作家论成了王充文论思想的核心,他从元气论入手为后世文论才性提供了前提准备。《论衡》的《定贤篇》、《超奇篇》说明了王充的主要精神。

A Class of the Singularly Perturbed Boundary Value Problems for Elliptic Equation with a Super Surface of Turning Point in n-dimensional Space

In this paper, we study a class singular perturbed elliptic equation boundary value problem with a super surface of turning point in n-dimensional space by using the method of multiple scales and the comparison theorem. The uniformly valid asymptotic approxmations of solutions for the boundary value problem is constructed.

Selective Alignment of D2 Induced by Two Ultrashort Laser Pulses

The dynamics of molecular rotational wave packets of D2 induced by ultrashort laser pulses was investigated numerically by solving the time-dependent SchrSdinger equation. Results show that an ultrashort pulse can manipulate a coherent rotational wave packet of D2 se- lectively. In the calculation, a first laser pulse was used to create a coherent rotational wave packet from an initial thermal ensemble of D2 at the temperature of 300 K. The second laser pulse was used to manipulate the rotational wave packet selectively around the first quarter and the three quarters revival. The alignment parameter and its Fourier transform amplitude both illustrate that the relative populations of even and odd rotational states in the final rotational wave packet of D2 can be manipulated by precisely selecting the time delay between the first and the second ultrashort pulse.

Wave Interaction with Dual Circular Porous Plates

In this paper we have investigated the reflection and the transmission of a system of two symmetric circular-arc-shaped thin porous plates submerged in deep water within the context of linear theory. The hypersingular integral equation technique has been used to analyze the problem mathematically. The integral equations are formulated by applying Green＇s integral theorem to the fundamental potential function and the scattered potential function into a suitable fluid region, and then using the boundary condition on the porous plate surface. These are solved approximately using an expansion-cure-collocation method where the behaviour of the potential functions at the tips of the plates have been used. This method ultimately produces a very good numerical approximation for the reflection and the transmission coefficients and hydrodynamic force components. The numerical results are depicted graphically against the wave number for a variety of layouts of the arc. Some results are compared with known results for similar configurations of dual rigid plate systems available in the literature with good agreement.

王充的理想人格观与其文论──王充系列研究之二

王充的理想人格观与其文论──王充系列研究之二郑先兴，金宪文“文如其人”，人与文是不可分的。王充在谈文时，实际上是在谈人；而在论人时，又在讲文。因此，认识王充的理想人格观是把握工充文论的基础和锁钥，而认识王充的文论则可加深对其理想人格观的认识。王充的理...

Effects of R-Parity Violating Supersymmetry in Top Pair Production at Linear Colliders with Polarized Beams

In the minimal supersymmetric standard model with R-parity violation, the lepton number violating top quark interactions can contribute to the top pair production at a linear collider via tree-level u-channel squark exchange diagrams. We calculate such contributions and find that in the allowed range of these R-violating couplings, the top pair production rate as well as the top quark polarization and the forward-backward asymmetry can be significantly altered. By comparing the unpolarized beams with the polarized beams, we find that the polarized beams are more powerful in probing such new physics.

Description of the Superdeformed Bands of Odd-Odd Nuclei in A～80 Region

Properties of the superdeformed bands of odd-odd nuclei in A ～ 80 massregion are investigated system-atically within the supersymmetry scheme including many-bodyinteractions and a perturbation possessing the SO(5) (or SU(5)) symmetry on the rotational symmetry.The obtained γ-ray energies, and the dynamical moments of inertia agree with experimental data. Itshows that this approach is quite powerful in describing odd-odd nuclei in A ～ 80 mass region.

Compact-Parity Testing and Testable Design

Parity testing is one of the compact testing techniques, which, traditionally, relies on applying all 2^n input combinations to an n-input combinational circuit without need of knowing the implementation of the circuits under test. The faults can be detected just by observing and comparing its parity of whole output of circuit with the expectation one. The way seemed to be less interesting to the test eagineers in the past days, mainly due to the reasons of its exhaustive testing and time-cousuming, which became a barrier as the number of input lines gets growing. However its great facility and convenience in testing still interest to the engineers who need to have a quick look at the qualities of the circuits without generating the test patterns for a given circuit to be tested. In this paper, a new approach called pseudo-parity testing is presented to deal with the dilemma we are facing： i. e. to change an exhaustive parity testing into a non-exhaustive one, followed by a pseudo- parity testable design to help realize the new way of pseudo-parity testing. The idea of pseudo-parity testing presented in this paper may resume its spirits towards its promising future.

R-Parity Violation Effects on b_1 → bχ_1~0 in Minimal SupersymmetricStandard Model

We investigate in detail the effects of R-parity lepton number violation onthe decay b_1 → bχ_1~0 in the R-parity violating minimal supersymmetric standard model (R_p-MSSM)under the present experimental constraints on R_p parameters. In our numerical calculations weconsider two cases of input parameters of the squark and slepton sectors, M_(squark) 【 M_(slepton)and M_(squark) 】 M_(slepton), for comparison. The results show that the relative R-parity violatingcorrection is not very sensitive to the mass of the lightest neutralino bχ_1~0 the degenerateR-parity violating coupling parameter λ′_2 but strongly depends on M_(squark), M_(slepton) tan βand tie degenerate R-parity violating coupling parameter λ′_1. The relative correction is about -4～ 3% and can exceed -6% in some region of parameter space. Therefore, precise experiment analyseson the decay b_1 → bχ_1~0 may provide a probe of the R-parity violation.

Super-resolution reconstruction of synthetic-aperture radar image using adaptive-threshold singular value decomposition technique

A super-resolution reconstruction approach of （SVD） technique was presented, and its performance was radar image using an adaptive-threshold singular value decomposition analyzed, compared and assessed detailedly. First, radar imaging model and super-resolution reconstruction mechanism were outlined. Then, the adaptive-threshold SVD super-resolution algorithm, and its two key aspects, namely the determination method of point spread function （PSF） matrix T and the selection scheme of singular value threshold, were presented. Finally, the super-resolution algorithm was demonstrated successfully using the measured synthetic-aperture radar （SAR） images, and a Monte Carlo assessment was carried out to evaluate the performance of the algorithm by using the input/output signal-to-noise ratio （SNR）. Five versions of SVD algorithms, namely 1 ） using all singular values, 2） using the top 80% singular values, 3） using the top 50% singular values, 4） using the top 20% singular values and 5） using singular values s such that S2≥/max（s2）/rinsNR were tested. The experimental results indicate that when the singular value threshold is set as Smax/（rinSNR）1/2, the super-resolution algorithm provides a good compromise between too much noise and too much bias and has good reconstruction results.

Low-Density Parity-Check Codes for Noncoherent UWB Communication Systems

In order to guarantee reliable data transmission, powerful channel coding techniques are usually required in noncoherent ultra-wideband(UWB) communication systems. Accordingly, several forward error correction(FEC) codes, such as Reed-Solomon and convolutional codes have been used in noncoherent UWB systems to improve the bit error rate(BER) performance. In this paper, low-density parity-check(LDPC) codes are further studied as more powerful FEC candidates for noncoherent UWB systems. Two LDPC codes and the corresponding decoding procedures are presented for noncoherent UWB systems. Moreover, performance comparison between the LDPC codes and other FEC codes are provided for three major noncoherent UWB communication systems, namely, noncoherent pulse position modulation(NC-PPM), transmitted reference(TR) and transmitted reference pulse cluster(TRPC). Both theoretical analysis and simulation results show that the two investigated LDPC codes outperform other existing FEC codes with limited penalty in terms of complexity and therefore they are promising FEC candidates for noncoherent UWB systems with low-cost and low-power consumption.