从2002年订数看《读者》发行营销模式

2001年,中国期刊市场重新整合.我国加入WTO以后,随着期刊市场环境的逐步改变,刊物品种日益增多,《好日子》、《风韵》、《少年文摘》、《读者欣赏》等一批新刊先后创刊,对现有的和潜在的市场空间在各领域进一步细分.大众期刊为走出面临的尴尬局面,针对读者阅读追求新、快、美的阅读心理的变化,刊社在不断提高刊物内文质量、包装质量,赋予设计新意的同时,对刊物的营销也提出了更高的要求.

白细胞聚集试验诊断骨与关节感染初步报告

１９９４年８月～１９９５年１０月我们在１４例确诊为骨和关节感染患者中做了白细胞聚集试验（ＬＫＴ）、白细胞计数（ＷＢＣ）及血沉（ＥＳＲ）三项血液学检测。结果表明ＬＫＴ定量分析（百分率）在骨、关节感染诊断方面有一定实用价值。可以使骨、关节感染获得早期诊断，比ＷＢＣ、ＥＳＲ更为准确。ＬＫＴ值与疾病严重性有关，可作为疾病临床转归一种监测手段；而且也可以作为临床用药治疗的一项更为有用的监测指标。

职场幽默

自小能干 有人敲门。医生的6岁的女儿打开了门。

Load-balancing data distribution in publish/subscribe mode

To improve data distribution efficiency a load-balancing data distribution LBDD method is proposed in publish/subscribe mode.In the LBDD method subscribers are involved in distribution tasks and data transfers while receiving data themselves.A dissemination tree is constructed among the subscribers based on MD5 where the publisher acts as the root. The proposed method provides bucket construction target selection and path updates furthermore the property of one-way dissemination is proven.That the average out-going degree of a node is 2 is guaranteed with the proposed LBDD.The experiments on data distribution delay data distribution rate and load distribution are conducted. Experimental results show that the LBDD method aids in shaping the task load between the publisher and subscribers and outperforms the point-to-point approach.

On the Order of the Solutions of Systems of Complex Algebraic Differential Equations

This paper is concerned with the order of the solutions of systems of high-order complex algebraic differential equations.By means of Zalcman Lemma,the systems of equations of[1]is extended to more general form.

Taxonomic revision of Gelidium tsengii and Gelidium honghaiwanense sp. nov. (Gelidiales, Rhodophyta) from China based upon molecular and morphological data analyses

The taxonomic relationship of Chinese GeBdium tsengii and Gelidium johnstonii was ambiguous. For almost 20 years they have been regarded as distinct taxa and until 2002 G.johnstonii was considered as a misapplied name of G. tsengii. In this study, herbarium specimens that initially attributed to G. tsengii and fresh G. tsengii specimens were used to address the taxonomic issues. In phylogenetic studies, G. tsengii from Dayawan, China, near the type locality of G. tsengii and G.johnstonii from Sonora, Mexico, the type locality of G. johnstonii, formed a monophyletic group with maximum support in rbcL and COl genes analyses, indicating that they were genetically identical. In morphological studies, G. tsengii was similar to G. johnstonii in branching pattern, inner structures and fructiferous organs. Consequently, we considered that semi-circular outline of G. tsengii could no longer be treated as a discrimating fea^re. G.johnstonii had priority of publication and according to the International Code of Botanical Nomenclature, G. tsengii was proposed as a synonym of G. johnstonii. Gelidium honghaiwanense sp. nov. was described from Guangdong, China on the basis of morphological and molecular data. For vegetative structures, it was characterized by flattened upright frond, regular two-three times branches pinnate or alternate and clavate ultimate branchlets. For reproductive structures, the tetrasporangial sori were in the apical part of branches and the tetrasporangial branchlets were distichously distributed along second order branches. The present study clarified the relationship between G. tsengii and G. johnstonii from Guangdong and added a new Gelidium species to the Chinese algal flora.

Algebraic-Based Nonbinary LDPC Codes with Flexible Field Orders and Code Rates

In this paper, we study the rank of matrices over GF(2~p),and propose two construction methods for algebraic-based nonbinary LDPC codes from an existing LDPC code, referred to as the original code. By multiplying all elements of each column of the binary parity-check matrix H corresponding to the original code with the same nonzero element of any field, the first class of nonbinary LDPC codes with flexible field order is proposed. The second method is to replace the nonzero elements of some columns in H with different nonzero field elements in a given field, and then another class of nonbinary LDPC codes with various rates is obtained. Simulation results show that the proposed nonbinary LDPC codes perform well over the AWGN channel with the iterative decoding algorithms.

Offloading Mobile Data from Cellular Networks Through Peer-to-Peer WiFi Communication:A Subscribe-and-Send Architecture

Currently cellular networks do not have sufficient capacity to accommodate the exponential growth of mobile data requirements.Data can be delivered between mobile terminals through peer-to-peer WiFi communications(e.g.WiFi direct),but contacts between mobile terminals are frequently disrupted because of the user mobility.In this paper,we propose a Subscribe-and-Send architecture and an opportunistic forwarding protocol for it called HPRO.Under Subscribe-and-Send,a user subscribes contents on the Content Service Provider(CSP) but does not download the subscribed contents.Some users who have these contents deliver them to the subscribers through WiFi opportunistic peer-to-peer communications.Numerical simulations provide a robust evaluation of the forwarding performance and the traffic offloading performance of Subscribe-and-Send and HPRO.

Enumeration Order Equivalence in Rational Numbers

The enumeration of elements of c.e. sets in the theory of computability and computational complexity has already been investigated. However, the order of this enumeration has received less attention. The enumeration orders of elements of c.e. sets by means of Turing machines on natural numbers are investigated. In this paper, we consider the enumeration orders of elements of c.e. sets on rational numbers. We present enumeration order reducibility and enumeration order equivalence on rational numbers and propose some lemmas and theorems on these concepts. Also, we show that the theories here hold for Rc and we could repeat the same theories in this domain, in a same way.

卷首语

《书法》杂志是在广大读者的爱护与批评中成长的。三十多年来,她从形式到内容都有很大的变化,这其中自少不了广大读者的参与。特别是在2004年改为大开本,栏目整合为经典、视野、专题、翰墨、时空五大块后,从形式上渐形成了其大方、简洁的风格;内容编排方面,在思想性、知识性、趣味性等方面都有所加强,得到了广大读者的肯定,杂志订数逐年有所增加。眼下,为了适应时代的发展, 并基于杂志本身的不足处, 本刊又面临一次"大变脸"的机会.

编后记

由于本书第三辑征订时适逢动乱,故订数受了些影响,但我们坚信,中国需要鲁迅,需要鲁迅研究。我们虽然水平有待于进一步提高,但我们相信:它对社会是有益的。我们唯有不懈努力,以求赢得读者。今年是'左联'成立六十周年,学术界开展了多种纪念活动,本馆也参与了其事。

Ordered arrays of semi-crown ligands on an Au(111) electrode surface: in situ STM study

In situ scanning tunneling microscopy (STM) and cyclic voltammetry were employed to investigate the adsorption structures of three semi-crown ligands on an Au(111) surface under the potential control. It is found that all the molecules formed ordered arrays in 0.1 mol/L HClO4 solution, although their geometric structures are complex and asymmetric. The driving force was supposed to come from the balance between intermolecular and molecule-substrate interactions. High resolution STM images revealed internal molecular structures, orientations and packing arrangements in the ordered adlayers. The results are useful for preparing ordered arrays of transition metal-mediated nanostructures.

On exceptional pq-groups

A finite group G is called exceptional if for a Galois extension F/k of number fields with the Galois group G,in the Brauer-Kuroda relation of the Dedekind zeta functions of fields between k and F,the zeta function of F does not appear.In the present paper we describe effectively all exceptional groups of orders divisible by exactly two prime numbers p and q,which have unique subgroups of orders p and q.

Degree-Based Moment Estimation for Ordered Networks

The edges between vertices in networks take not only the common binary values, but also the ordered values in some situations(e.g., the measurement of the relationship between people from worst to best in social networks). In this paper, the authors study the asymptotic property of the moment estimator based on the degrees of vertices in ordered networks whose edges are ordered random variables. In particular, the authors establish the uniform consistency and the asymptotic normality of the moment estimator when the number of parameters goes to infinity. Simulations and a real data example are provided to illustrate asymptotic results.

Recognizing Finite Groups Through Order and Degree Patterns

The degree pattern of a finite group G associated with its prime graph has been introduced by Moghaddamfar in 2005 and it is proved that the following simple groups are uniquely determined by their order and degree patterns： All sporadic simple groups, the alternating groups Ap （p ≤ 5 is a twin prime） and some simple groups of the Lie type. In this paper, the authors continue this investigation. In particular, the authors show that the symmetric groups Sp＋3, where p ＋ 2 is a composite number and p ＋ 4 is a prime and 97 〈 p ∈π（1000!）, are 3-fold OD-characterizable. The authors also show that the alternating groups All6 and A134 are OD-characterizable. It is worth mentioning that the latter not only generalizes the results by Hoseini in 2010 but also gives a positive answer to a conjecture by Moghaddamfar in 2009.

Repulsive Effect for Unbound High Energy Particles Along Rotation Axis in Kerr-Taub-NUT Spacetime

We have investigated the acceleration of the unbound high energy particles moving along the rotation axis in the Kerr-Taub-NUT spacetime, and then study the dependence of the repulsive effects on the NUT charge for the particles in the spacetime. Whether the repulsive effects with the NUT charge become stronger depends on the Carter constant, the position and velocity of the particles themselves. We also present numerically the changes of the observable velocity and acceleration with the NUT charge for the unbound particles in the Kerr-Taub-NUT spacetime.

Estimation of the electromechanical characteristics of power systems based on a revised stochastic subspace method and the stabilization diagram

Estimating low-frequency oscillation modes and the corresponding mode shapes based on ambient data from WAMS measurements has a promising prospect in power system analysis and control.Based on the stochastic subspace method,this paper proposes a revised stochastic subspace method by introducing reference channels,which can estimate the modes and the mode shapes simultaneously with great computational efficiency.Meanwhile,the accuracy of the estimated results is not degraded.To discriminate the real modes from the spurious ones,the stabilization diagram is introduced.A novel algorithm is designed to deal with the stabilization diagram which can detect the real modes automatically.Tests conducted on the IEEE-118 system indicate that the proposed method has good performance in terms of both computational efficiency and accuracy,and has the potential of being used on-line.

Formation of Nanometer Coherent Structures During Spinodal Decomposition and Ordering Coexistence Phase Transformation in Fe-24Al Alloys

The nanometer coherent structure evolution of spinodal decomposition and ordering coexistence phase transformation in Fe-24Al alloys is investigated by the microscopic phase field kinetic model.The results show that the concentration and long-range order parameters all continuously change towards to their equilibrium values during phase transformation.With the increase of elastic interaction energy,the anisotropy along [01] or [10] elastic soft direction is more obvious and the time reaching equilibrium state is also shortened.According to the results,the formation of nanometer coherent structures during phase transformation is composed of the initial decreasing stage of order degree stage,the incubation stage,the continuous increasing stage of concentration order parameter and long-range order parameter,and the later stable stage.The spinodal decomposition and ordering is interaction;the initial ordering stage is a necessary condition of the coexistence phase transformation.The nanometer coherent structures are not found to grow during the whole phase transformation.The simulation results are in accordance with the results in experiment obtained by the aging treatment in Fe-24Al alloys.

The centralizer of an element in a Lie algebra of type L

In this paper, we investigate the Lie algebra L(A,α,δ) of type L and obtain the respective sufficient conditions for L(A,α,δ δ to be semisimple, and for Z(ω) = Fω as well, where 0 ≠ ω ? L(A, α, δ, δ) and Z(ω) is the centralizer of ω.