基于强势度排序指标的出版社资源配置问题研究

采用多元线性逐步回归方法得出各分社以及各个课程的单位书号销售量,界定包含满意度、市场占有率、出版社的相对地位等属性的强势产品概念,使用熵权法和逼近理想点法(TOPSIS)建立了一个强势度排序指标。对于书号配置问题,使用二步决策思想进行资源优化配置,考虑出版社当年效益同时兼顾了长远发展战略,建立了整数规划模型,提高了企业的竞争力。

报纸编辑的“三度强势”意识

人们在欣赏绘画作品时,大都会先通观全画,然后视线停留在画面上的某一处,这个地方就是画面的视觉中心.与此相仿,报纸编辑欲营造版面视觉冲击力,需有"三度强势"(强势信息、强势体裁、强势版式)意识.

基于优化模型的出版社的资源配置问题

优化模型理论针对出版社资源配置问题,在信息资源不完全且现有信息可靠性偏差、各种信息指标关系不够明确的情况下,总体运用灰色系统理论,建立GM(1,1)模型。本文在经济效益最优为目的的前提下设计检验方案,确定了出版社强势产品的三个特征指标,即绝对市场销售量、相对市场占有率和市场满意度。为了突出强势课程,在计算课程强势度时,分别对经济效益和市场满意度进行规范化处理。

试论品牌创新与发展

依据宏基创始人施振荣先生提出的微笑曲线,制造企业位于整个价值链上利润最薄弱的环节,企业需要通过品牌运作、行销渠道等手段提升附加价值,向曲线两端渗透来创造更多利润。纵观近年来的市场状况,模糊的品牌定位、粗放的品牌推广、盲目的品牌扩张已成为制约本土企业发展的瓶颈,此外品牌创新必须考虑风险与成本,考察品牌的强势度与产品的相关性,使品牌获得最大限度的拓展张力。

出版社资源(书号)优化配置模型

在出版业资源的配置中,应将企业的长远发展与近期目标综合考虑,即在企业长远发展的基础上追求效益的最大化,这可归纳为多层次优化问题。本文在对已有文献提供的具体数据进行处理的基础上,根据出版社自身的特性,将出版社资源——书号的优化配置分两阶段进行,并依据各阶段的优化配置原则和目标分别建立数学模型,求解出书号分配的最终结果,最后对结果进行了合理性分析与评价。

出版社的资源配置问题的优化模型

本文针对出版社资源配置问题,在信息资源不完全且现有信息可靠性偏差、各种信息指标关系不够明确的情况下,总体运用灰色系统理论,建立GM(1,1)模型:dx(1)(t)/dt+ax(1)(t)=u用课程的强势度对灰色模型的预测值进行优化和完善.求解结果表明本文的最终模型可扩展性好,算法复杂度低,较好的解决了本文提出的问题.

出版社资源配置优化问题的研究

通过对A出版社近5年的市场销售情况及数据进行统计和分析,确定了影响出版社图书销售量和经济效益的几个重要因素.在此基础上,运用多元线性逐步回归方法得出2006年各分社以及各个课程的单位书号销售量;界定了包含满意度、市场占有率、出版社的相对地位等属性的强势产品概念,并用熵权法和逼近理想点法(TOPSIS)建立了一个强势度排序指标.文章的最后,应用二步决策思想进行资源优化配置,很好地解决了书号配置问题.

ANALYTICAL SOLUTIONS FOR A MODE Ⅲ CRACK IN PIEZOELECTRIC MATERIALS

A mode Ⅲ crack problem in a transversely isotropic piezoelectric material subjected to uniform loads at infinity is studied based on exact boundary conditions. The complex potential approach is used to reduce the problem to Hilbert problem. As a result, closed form field solutions in the piezoelectric material and inside the crack are presented. It is shown that the stresses and electric displacement have square root singularities at the crack tips, but the electric field is uniform everywhere in the material and equal to the remote applied one. It is also found that the electric displacement intensity factor depends on both material properties and the mechanical loads, but not the electric loads. Hence it may be concluded that the electric loads have no influence on the field singularities.

Structures and Dynamics of a Two-Dimensional Confined Dusty Plasma System

The influence of the confining potential strength and temperature on the structures and dynamics of a two-dimensional (2D) dusty plasma system is investigated through molecular dynamic (MD) simulation. The circular symmetric confining potential leads to the nonuniform packing of particles, that is, an inner core with a hexagon lattice surrounded by a few outer circular shells. Under the appropriate confining potential and temperature, the particle trajectories on middle shells form a series of concentric and nested hexagons due to tangential movements of particles.Mean square displacement, self-diffusion constant, pair correlation function, and the nearest bond are used to characterize the structural and dynamical properties of the system. With the increase of the confining potential, the radial and tangential movements of particles have different behaviors. With the increase of temperature, the radial and tangential motions strengthen, particle trajectories gradually become disordered, and the system gradually changes from a crystal or liquid state to a gas state.

The increasing predominance of extreme precipitation in Southwest China since the late 1970s

Extreme precipitation events cause severe environmental and societal damage worldwide.Southwest China(SWC)is sensitive to such effects because of its overpopulation,underdevelopment,and fragile ecosystems.Using daily observations from 108 rain-gauge stations,the authors investigated the frequency of extreme precipitation events and their contribution to total precipitation in SWC since the late 1970 s.Results indicate that total precipitation is decreasing insignificantly,but rainfall-events frequency is decreasing significantly,whereas the region is experiencing more frequent and intense extreme precipitation events.Note that although fewer stations are statistically significant,about 60%of the rain-gauge stations show an increasing trend in the frequency and intensity of extreme precipitation.Furthermore,there is an increasing trend in the contribution of total extreme precipitation to total precipitation,with extreme precipitation becoming dominant in the increasingly arid SWC region.The results carry important implications for policymakers,who should place greater emphasis on extreme precipitation and associated floods and landslides when drafting water-resource management policies.

Century-long variability and trends in daily precipitation characteristics at three Finnish stations

Long-term variations and trends in a wide range of statistics for daily precipitation characteristics in terms of intensity, frequency and duration in Finland were analysed using precipitation records during 1908e2008 from 3 meteorological stations in the south(Kaisaniemi),centre(Kajaani) and north(Sodankyl€a). Although precipitation days in northern part were more frequent than in central and southern parts, daily precipitation intensity in the south was generally higher than those in the centre and north of the country. Annual sum of very light precipitation(0 mm < daily precipitation long-term 50 th percentile of daily precipitation more than 0 mm) significantly( p < 0.05) decreased over time,with the highest rate in northern Finland. These decreasing trends might be the result of significant increases in frequency of days with very light precipitation at all the stations, with the highest and lowest rates in northern and southern Finland, respectively. Ratio of annual total precipitation to number of precipitation days also declined in Finland over 1908e2008, with a decreasing north to south gradient. However, annual duration indices of daily precipitation revealed no statistically significant trends at any station. Daily precipitation characteristics showed significant relationships with various well-known atmospheric circulation patterns(ACPs). In particular, the East Atlantic/West Russia(EA/WR)pattern in summer was the most influential ACP negatively associated with different daily precipitation intensity, frequency and duration indices at all three stations studied.

Model Potential Calculations of Oscillator Strength Spectra of Rydberg Li Atoms in External Fields

By combining the B-spline basis set with model potential (B-spline + MP),we present oscillator strengthspectra of Rydberg Li atoms in external fields.The photoabsorption spectra are analyzed.Over the narrow energyranges considered in this paper,the structure of the spectra can be independent of the initial state chosen for a givenatom.Our results are in good agreement with previous high-precision experimental data and theoretical calculations,where the R-matrix approach together with multichannel quantum defect theory (R-matrix+MQDT) was used.It issuggested that the present methods can be applied to deal with the oscillator strength spectra of Rydberg atoms incrossed electric and magnetic fields.

Interdecadal variability of the South China Sea monsoon and its relationship with latent heat flux in the Pacific Ocean

We analyzed interdecadal variability of the South China Sea monsoon and its relationship with latent heat flux in the Pacific Ocean, using NCEP wind field and OAFlux heat flux datasets. Results indicate that South China Sea monsoon intensity had an obvious interdecadal variation with a decreasing trend. Variability of the monsoon was significantly correlated with latent heat flux in the Kuroshio area and tropical Pacific Ocean. Variability of latent heat flux in the Kuroshio area had an interdecadal increasing trend, while that in the tropical Pacific Ocean had an interdecadal decreasing trend. Latent heat flux variability in these two sea areas was used to establish a latent heat flux index, which had positive correlation with variability of the South China Sea monsoon. When the latent heat flux was 18 months ahead of the South China Sea monsoon, the correlation coefficient maximized at 0.58 (N=612), with a 99.9% significance level of 0.15. Thus, it is suggested that latent heat flux variability in the two areas contributes greatly to interdecadal variability of the South China Sea monsoon.

Reliable Analytic Strategy to Correlate the Morphological and Cytological Parameters on Lupinus termis L, against Fusarium oxysporum Infection

Many analytic strategies have emerged to estimate plant responses to Fusarium wilt. The demand for fast and reliable method （diagnosis, prediction） to determine isolate strength accurately is not established yet. Early determination of pathogen strength helps in plant medication. The aim of this study was to develop a faster strategy and method for early determination of fungal isolates strength in correlation to plant response. Till now, the scientists have no consensus on the most correlated parameters that could express wilt precisely. In this study, 30 isolates of Fusarium oxysporum isolated from Lupinus termis L. were used to provide an explicit image about the real strength of Fusarium isolates and its impact on the plant. Wilting percentage ranged from 26.67% to 93.33% of the infected plants depending on isolate virulence. Some of cellular, morphological and physical measurements were conducted on 8 out of 30 isolates, including root （length, fresh weight （FW） and dry weight （DW））, nodules （water content （WC）, FW, DW）, stem （height, WC, FW, DW）, total leaves/plant （WC, FW, DW） and the fourth leaf （WC, FW, DW, leaf area, epidermal cell area, epidermal cell number, succulence）. Hierarchical clustering was used to determine the variance between the isolates. Detrended correspondence analysis （DCA） and canonical correspondence analysis （CCA） were used to determine the most important growth parameters that could express wilting accurately. The CCA results showed that most of the measured parameters on the fourth leaf, except for leaf epidermal cell number, were highly and positively correlated to wilt. That makes these specific parameters valuable and sensitive for any changes in isolates strength. Accordingly, a mathematical model was created to be helpful in the quick determination of isolate strength and precise medication.

Drought may be beneficial to the competitive advantage of Amaranthus spinosus

Drought can affect the growth and soil enzyme activities of invasive alien plants(IAPs).It is imperative to evaluate the competitive advantage of IAPs compared with that of the native species and the activities of soil enzymes under drought.This study aimed to evaluate the competitive advantage of the IAP Amaranthus spinosus that originated from tropical America compared with the native Chinese species A.tricolor and the activities of soil enzymes under drought.A competitive co-culture of A.spinosus and A.tricolor was established using a planting basin experiment.The two species were treated with different levels of drought,i.e.(i)the control;(ii)a light level of drought and(iii)a heavy level of drought.The functional traits,osmotic adjustment and the activities of antioxidant enzymes of the two species,as well as soil pH and electrical conductivity,contents of soil microbial biomass carbon and the activities of soil enzymes were determined.The relative competition intensity and relative dominance of A.spinosus were greater than those of A.tricolor under drought.Drought may provide an advantage to the competitive advantage of A.spinosus.Soil water-soluble salt content and sucrose hydrolytic power of A.spinosus were greater than those of A.tricolor under drought.The ability of A.spinosus to grow in soil with higher levels of water-soluble salt contents and sucrose hydrolytic power under drought may aid in its acquisition and utilization of nutrients.