日本《两东笔语》所载笔谈医学史料研究——以药物、诊疗为核心

日本国立公文书馆内阁文库藏有丹羽正伯所著《两东笔语》一书,详细记载了日本江户宽延元年日本东都医官丹羽正伯与朝鲜通信使者笔谈的经过,对双方探讨药物、诊治疾病等内容都有详细记述,其中涉及了大量的医学史料,真实、生动地呈现了日本和朝鲜医家之间的交流情况,为研究江户时期日朝间医学交流提供了珍贵史料。

武汉地区人群甲肝感染率的数学模型研究

本文试用简单催化模型、修正伯利模型和 Gompertz 模型拟合武汉地区人群甲肝感染率的横断面调查资料,以比较模型拟合精度,探讨生物学意义,预测甲肝感染动态,获得满意效果。

用整体性观点组织数学教学

用整体性观点组织和处理教材。方法是:①围绕具有多重孕伏功能的基本概念、基本法则、基本方法以及与之联系紧密的有关知识“块”,按照知识的基本结构组织教学。②按照数学知识的内在联系,使概念的抽象概括。

SAPO-34 synthesized with n-butylamine as a template and its catalytic application in the methanol amination reaction

SAPO-34 was synthesized with n-butylamine（BA） as a template for the first time.Crystallization temperature and initial Si amount were important factors leading to successful syntheses.Lamellar AlPO-kanemite tends to form as the major phase or as an impurity of SAPO-34 at lower crystallization temperatures,though a higher initial Si amount may offer a positive effect on the crystallization of SAPO-34 that mitigates the low temperature.Higher temperature（240℃） can effectively suppress the generation of lamellar materials and allow the synthesis of pure SAPO-34 with a wider range of Si incorporation.The crystallization processes at 200 and 240℃ were investigated and compared.We used the aminothermal method to synthesize SAPO-34-BA at 240℃ and also found n-propylamine is a suitable template for the synthesis of SAPO-34.The SAPO-34-BA products were characterized by many techniques.SAPO-34-BA has good thermal stability,crystallinity and porosity.BA remained intact in the crystals with ~1.8 BA molecule per chabazite cage.The catalytic performance of SAPO-34 was tested in the methanol amination reaction,which showed high methanol conversion and selectivity for methylamine plus dimethylamine under the conditions investigated,suggesting that this material is a good candidate for the synthesis of methylamines.

Two-level Bregmanized method for image interpolation with graph regularized sparse coding

A two-level Bregmanized method with graph regularized sparse coding （TBGSC） is presented for image interpolation. The outer-level Bregman iterative procedure enforces the observation data constraints, while the inner-level Bregmanized method devotes to dictionary updating and sparse represention of small overlapping image patches. The introduced constraint of graph regularized sparse coding can capture local image features effectively, and consequently enables accurate reconstruction from highly undersampled partial data. Furthermore, modified sparse coding and simple dictionary updating applied in the inner minimization make the proposed algorithm converge within a relatively small number of iterations. Experimental results demonstrate that the proposed algorithm can effectively reconstruct images and it outperforms the current state-of-the-art approaches in terms of visual comparisons and quantitative measures.

An efficient two-step quantum key distribution protocol with orthogonal product states

An efficient two-step quantum key distribution （QKD） protocol with orthogonal product states in the （×）（n ≥3） Hilbert space is presented. In this protocol, the particles in the orthogonal product states form two particle sequences. The sender, Alice, first sends one sequence to the receiver, Bob. After Bob receives the first particle sequence, Alice and Bob check eavesdropping by measuring a fraction of particles randomly chosen. After ensuring the security of the quantum channel, Alice sends the other particle sequence to Bob. By making an orthogonal measurement on the two particle sequences, Bob can obtain the information of the orthogonal product states sent by Alice. This protocol has many distinct features such as great capacity, high efficiency in that it uses all orthogonal product states in distributing the key except those chosen for checking eavesdroppers.

The Spectrum of Positive Operators on Hilbert Lattices

Some spectral characterizations of positive operators on Hilbert lattices are presented. The application of these results can yield some equivalent relations of an irreducible positive operator. Some related results for positive operators on Hilbert lattice are also obtained.

OMHT method for weak signal processing of GPR and its application in identification of concrete micro-crack

In the light of the problem of weak reflection signals shielded by strong reflections from the concrete surface,the detection and the recognition of hidden micro-cracks in the shield tunnel lining were studied using the orthogonal matching pursuit and the Hilbert transform(OMHT method).First,according to the matching pursuit algorithm and the strong reflection-forming mechanism,and based on the sparse representation theory,a sparse dictionary,adapted to the characteristics of the strong reflection signal,was selected,and a matching decomposition of each signal was performed so that the weak target signal submerged in the strong reflection was displayed more strongly.Second,the Hilbert transform was used to extract multiple parameters,such as the instantaneous amplitude,the instantaneous frequency,and the instantaneous phase,from the processed signal,and the ground penetrating radar(GPR)image was comprehensively analyzed and determined from multiple angles.The results show that the OMHT method can accurately weaken the effect of the strong impedance interface and effectively enhance the weak reflected signal energy of hidden micro-crack in the shield tunnel segment.The resolution of the processed GPR image is greatly improved,and the reflected signal of the hidden micro-crack is easily visible,which proves the validity and accuracy of the analysis method.

Constrained Density Functional Theory Plus the Hubbard U Correction Approach for the Electronic Polaron Mobility:A Case Study of TiO_(2)

The formation and migration of polarons have important influences on physical and chemical properties of transition metal oxides.Density functional theory plus the Hubbard U correction(DFT+U)and constrained density functional theory(cDFT)are often used to obtain the transfer properties for small polarons.In this work we have implemented the cDFT plus the Hubbard U correction method in the projector augmented wave(PAW)framework,andapplied it to study polaron transfer in the bulk phases of TiO_(2).We have confirmed that the parameter U can have significant impact on theoretical prediction of polaronic properties.It was found that using the Hubbard U calculated by the cDFT method with the same orbital projection as used in DFT+U,one can obtain theoretical prediction of polaronic properties of rutile and anatase phases of TiO_(2) in good agreement with experiment.This work indicates that the cDFT+U method with consistently evaluated U is a promising first-principles approach to polaronic properties of transition metal oxides without empirical input.

The Relative Deprivation Theory and Yemen＇s Uprising

The political upheavals in the Arab world during 2011 challenged the political status quo and have irrevocably paved the way toward transformation in the Middle East and North Africa （MENA）, The longstanding structural impediments to equitable growth and social justice afflicting the Arab world came to a head through a combination of persistently poverty, high unemployment, particularly among educated youth, rampant corruption, deficit of democratic governance, and essential freedoms. Yemen is the third country of the Middle Eastern countries which turmoil sparked in. All the uprisings connote of social, political and economic discontent and frustration. The main question and issue of this paper is to answer： What conditions breed change to Yemen？ The paper spotlights ＂relative deprivation＂ of Ted Robert Gurr as the most relevant theory to illustrate roots of the Yemen uprising. Relative deprivation theory holds that instead of an absolute standard deprivation, a gap between expectations and reality leads men to political violence. Therefore, this study is to utilize relative deprivation theory to explain how socio-economic shortages （such as high unemployment and education, along with poverty） and political inefficiencies of the Yemen＇s authoritarian regime led to public and collective discontent and upheaval. The intervened variables such as ＂ethnicity, race, religion, and sexuality＂ and international parameters have not been considered,

怕鬼的“雅谑”

中国科学院文学研究所出版过一本“不怕鬼的故事”。这当然是本好书。但是现在看来,单是一本“不怕鬼的故事”还不夠用,还得有一本“怕鬼的故事”。出版“不怕鬼的故事”,是为了破除迷信,告诉人:鬼是没有什么可怕的。倘使再出一本“怕鬼的故事”,那有什么意思呢?难道要宣传迷信,提倡怕鬼?

齐地仙话与齐文化

据《史记·封禅书》记载,大约在战国中期,齐、燕一带出现了一批方士,宣传人可以得道成仙,长生不死,自由遨游于人世之外。据说有宋毋忌、正伯侨、羡门子高等仙人,能'为方仙道,形解销化。

Resurgence relation and global asymptotic analysis of orthogonal polynomials via the Riemann-Hilbert approach

A global asymptotic analysis of orthogonal polynomials via the Riemann-Hilbert approach is presented,with respect to the polynomial degree.The domains of uniformity are described in certain phase variables.A resurgence relation within the sequence of Riemann-Hilbert problems is observed in the procedure of derivation.Global asymptotic approximations are obtained in terms of the Airy function.The system of Hermite polynomials is used as an illustration.

The α-orthogonal complements of regular Dirichlet subspaces for one-dimensional Brownian motion

Roughly speaking a regular Dirichlet subspace of a Dirichlet form is a subspace which is also a regular Dirichlet form on the same state space. In particular, the domain of regular Dirichlet subspace is a closed subspace of the Hilbert space induced by the domain and a-inner product of original Dirichlet form. We investigate the orthogonal complement of regular Dirichlet subspace for one-dimensional Brownian motion in this paper. Our main results indicate that this orthogonal complement has a very close connection with the a-harmonic equation under Neumann type condition.