政治嵌入和政治吸纳——沙特构建政治稳定的方式及其影响

政治嵌入机制和政治吸纳机制是沙特构建政治稳定的重要方式。沙特构建面向宗教集团和部落的政治嵌入机制,将国家权力嵌入主要政治势力。同时,沙特建立面向宗教集团、精英和平民的政治吸纳机制,将其纳入国家主流政治生活。政治嵌入机制和政治吸纳机制实现了权力的集中和统一,强化了政治调控能力,部分地满足了国民的政治参与诉求,重构了维系政治稳定的力量格局,最终促使沙特政治稳定得以长期维持。

心存顺服,有所持守

有所放弃,才能顺服。能够顺服,必要有所持守。

Fabrication and Electromechanical Characteristics of 2×2 Torsion-Mirror Optical Switch Arrays with Monolithically Integrated Fiber Self-Holding Structures

Novel 2×2 torsion-mirror optical switch arrays are fabricated by using the mixed micromachining based on the surface and bulk silicon microelectronics,then are investigated electromechanically in applied direct and alternating electric fields.When the thickness of the elastic torsion beams suspending the aluminum coated polysilicon micro-mirrors of the switches in the arrays is about 1μm,the electrostatic yielding voltages for driving the mirrors to achieve their ON-state are in the range of 270～290V,and the minimum holding voltages for mirrors ON-state are found as 55V or so.Theoretical analysis manifests that the yielding voltage is more sensitive to beam thickness than other design parameters do about the torsion-mirror switch structures.The lifetime can reach 10 8 times.The estimated shortest switching time of the switches at least lasts for less than 2ms.The force analysis on the two kinds of new fiber self-holding structures integrated monolithically in the chip of the optical switch arrays indicates that the structures can feature self-fixing and self-aligning of optical fibers.

Predicting pillar stability for underground mine using Fisher discriminant analysis and SVM methods

The purpose of this study is to apply some statistical and soft computing methods such as Fisher discriminant analysis （FDA） and support vector machines （SVMs） methodology to the determination of pillar stability for underground mines selected from various coal and stone mines by using some index and mechanical properties, including the width, the height, the ratio of the pillar width to its height, the uniaxial compressive strength of the rock and pillar stress. The study includes four main stages： sampling, testing, modeling and assessment of the model performances. During the modeling stage, two pillar stability prediction models were investigated with FDA and SVMs methodology based on the statistical learning theory. After using 40 sets of measured data in various mines in the world for training and testing, the model was applied to other 6 data for validating the trained proposed models. The prediction results of SVMs were compared with those of FDA as well as the measured field values. The general performance of models developed in this study is close; however, the SVMs exhibit the best performance considering the performance index with the correct classification rate Prs by re-substitution method and Pcv by cross validation method. The results show that the SVMs approach has the potential to be a reliable and practical tool for determination of pillar stability for underground mines.

POSITIVE DEFINITE KERNEL IN SUPPORT VECTOR MACHINE(SVM)

The relationship among Mercer kernel, reproducing kernel and positive definite kernel in support vector machine （SVM） is proved and their roles in SVM are discussed. The quadratic form of the kernel matrix is used to confirm the positive definiteness and their construction. Based on the Bochner theorem, some translation invariant kernels are checked in their Fourier domain. Some rotation invariant radial kernels are inspected according to the Schoenberg theorem. Finally, the construction of discrete scaling and wavelet kernels, the kernel selection and the kernel parameter learning are discussed.

A DSS DEVELOPMENT AND APPLICATION FOR SUSTAINABLE DEVELOPMENT

The characteristics of sustainable development problems in the developing countries is discussed.In order to develop and use decision support system (DSS) for supporting sustainable development problem decision making in the developing countries,this paper presents a strategy of constructing the DSS for sustainable development.A methodology of representing the model of sustainable development problems and developing a nonprocedural modeling language that is used to define sustainable development problems,a methodology of numeric and non numeric operation based theorem proving is given in this paper.

Upper bound solution for supporting pressure acting on shallow tunnel based on modified tangential technique

Based on the nonlinear failure criterion and the upper bound theorem, the modified tangential technique method was proposed to derive the expression of supporting pressure acting on shallow tunnel. Instead of the same stress state, different normal stresses on element boundaries were used. In order to investigate the influence of different factors on supporting pressures, the failure mechanism was established. The solution of supporting pressure, with different parameters, was obtained by optimization theory. The corresponding failure mechanism and numerical results were presented. In comparison with the results using the single tangential technique method, it is found that the proposed method is effective, and the good agreement shows that the present solution of supporting pressure is reliable.

PRICES OF ASIAN OPTIONS UNDER STOCHASTIC INTEREST RATES

Asian options are the popular second generation derivative products and embedded in many structured notes to enhance upside performance.The embedded options,as a result,usually have a long duration.The movement of interest rates becomes more important in pricing such long-dated options.In this paper,the pricing of Asian options under stochastic interest rates is studied.Assuming Hull and White model for the interest rates,a closed-form formula for geometric-average options is derived.As a by-product,pricing formula is also given for plan-vanilla options under stochastic interest rates.

Distribution area demarcation for logistic centers under geographical information system decision support system

Demarcating distribution area of goods is often guided by the rule of thumb by business proprietors. However, this method seems to be unsuitable when the demand points increase to a certain large extent. The present work attempted to convert the problem of distribution area demarcation into a localized problem of warehouseing and networking, and tried to establish district-based planning mode based on location based heuristic (LBH). Two methods were used in this study: 1) the manual method to construct the mathematical model and conduct simulation; 2) the automatic method using TransCAD software of geographical information system (GIS) for simulation. By comparing the effects of the two methods, the research provides theoretical support for business proprietors to demarcate the distribution area rationally with the application of GIS system. The results show that GIS has very good graphics construction function to replace complex text, and the automatic demarcating mode with human-machine interaction provides a good business decision-making support.

Determination of the Time of Degradation Trifloxystrobines Fungicide Used in the Apples

Combating the powdery mildew of apples requires permanent intervention with chemical substances. Such interventions are imposed by the development cycle of this pathogen, which during its entire vegetation produces its vegetative reproduction organs-conidia which in turn cause continuous infections. For this purpose, a whole range of fungicides is applied every year, which in order to provide more successful protection is supplemented by new chemical components. One of the most common fungicides which have been largely applied recently in protection of apple cultivars from this disease caused by the pathogen Podosphaera leucotricha is a fungicide produced under the trademark ZATO WG 50, mainly composed of trifloxystrobin. This fungicide also provided the best results in combating this disease during our three-year-long experiment, when compared to other types of fungicides. Taking into account the biology of this pathogen, this fungicide should be introduced until the end of vegetation, which may raise suspicion of its degradation into the apple fruits. In our study, apart from measuring the intensity scale of infection with this disease, we also conducted analyses of the time needed for trifloxystrobin to degrade into the apple fruits, by accurately determining the time of its decomposition by its application into two different concentrations.

Identification of indoor multi-component pollution gas aliasing peak based on JADE

Monitoring indoor harmful gas can obtain the infrared spectra of mixed harmful gases.Since the absorption bands of mixed gases overlap and their qualitative and quantitative analyses are not easy,feature extraction method based on joint approximative diagonalization of eigenmatrix（JADE）is proposed.By fully mining the hidden information of original data and analyzing higher-order statistics information of the data,each substance spectrum in the mixed gas can be accurately distinguished.In addition,a multi-dimensional data quantitative analysis model of the extracted independent source is established by using support vector machine（SVM）based on regular theory.The experimental results show that the correlation coefficients of the components of mixed gases is above 0.999 1by quantitative analysis,which verifies the accuracy of this feature extraction method.

Sublimated Colonialism： The Persistence of Actually Existing Settler-Colonialism

In my paper, “Sublimated Colonialism： The Persistence of Actually Existing Settler-Colonialism,” I interrogate the remaining settler-colonialisms that refused to disappear during the epoch of decolonization. I am most concerned with those settler-colonialisms that persist at the centers of world capitalism, and examine bow this social context often produces an ideology that relegates the concrete reality of settler-colonialism to the past, pushing its existence under supposedly “modem” social relations. Since Frantz Fanon＇s analysis of settler-colonialism, and the class contradiction between colonizer and colonized, was developed in an era where settler-colonialism was partially defined by the relationship between motherland and colony, some often imagine that the era of settler-colonialism is over. Clearly settler-colonialism did not vanish along with this distinction; internal colonies are retained in North America, for example, and the state of Israel is perhaps the most recent historical of this type of colonialism since it was settled and established in the 20th century. Moreover, there is often talk of a “world-wide indigenous movement” which claims to represent a global anti-colonialist front. The point of my paper, therefore, is to examine how settler-colonialism functions and persists when the settler-colony has become synonymous with the motherland. In this social context, colonizers often imagine themselves as the native inhabitants, while those who remain colonized are pushed even further out of history than they were during the previous era of settler-colonialism.

Small and Medium-Sized Enterprises （SMEs） in Personal Services

Entrepreneurship has become an attribute of the current growth without business activities. Entrepreneurship is a global world. It is not possible to think about economic driving force of technological development and scientific research. It materializes knowledge and involvement of people and society. Expansion of business activities is a source of individual country＇s economic performance. It contributes to the development of people＇s living standards. In every market economy, it represents an irreplaceable role for small and medium-sized enterprises （SMEs）. A strong representation of＂micro-enterprises＂ can be found in the field of personal services. Companies within the course of their existence go through particular stages of their development--from their foundation through the stage of steady development. After this stage, there comes their decline that can develop even into their termination. We indicate this process as a company life cycle. The aim of the submitted project is to map the life cycle of particularly chosen companies providing accommodation and catering services and to find a mutual relation among observed quantities and their stable economic positions in the market. The analysis is based on the data of macro-economic character, the data about development of receipts in the sector, development of inflation, tempo of economic growth, and development of consumer prices. Out of a company, non-financial factors will also be considered. The core of the analysis is the stage of sustainable stability of the assessed companies. The point of the findings is revelation of the causes of risks of possible transition into the stage of termination due to the decline of services volume, decline of profitability, and long-lasting payment insolvency. The contribution of the project is to draw our attention to possible risks of critical situation development and to propose how to avoid them so that the company will not occur in financial straits. Achieved information could assist the company management to make relevant decisions.

Effect of Nb content on microstructure stability and stress rupture properties of single crystal superalloy containing Re and Ru

Three experimental single crystal superalloys with 0%Nb,0.5%Nb,1.0%Nb were cast in the directionally solidified furnace,while other alloying element contents were basically kept unchanged.The effect of Nb on the microstructure,stability at1100°C and stress rupture properties at 1070°C and 160 MPa of the single crystal superalloy were investigated.The experiment results show that the primary dendrite arm spacing decreases and the volume fraction ofγ/γ′eutectic of the alloy increases with the increase of Nb content in the as-cast microstructures.The size ofγ′phase particles becomes small and uniform and the cubic shape does not obviously change with the increase of Nb content.The precipitating rate and volume fraction of TCP phases increase significantly with the increase of Nb content in the process of long term aging at 1100°C.The stress rupture lives increase and elongation decreases with increasing Nb content at 1070°C/160 MPa.At last,the relationship between the microstructures stability,stress rupture properties of the alloy and Nb content is discussed based on JMat Pro software and the lastest relevant database for single crystal superalloy.

Improvement of Pseudo-static Method for Slope Stability Analysis

traditional In this paper, two drawbacks pseudo-static method （vertical of the slice method） in the slope stability evaluation have been studied. First, the sliding mass is divided into vertical slices according to this method, which is irrational to some extent in the seismic design of slope. Second, only peak ground acceleration （PGA） is considered, and the effects of shaking frequency and duration on slope stability are neglected. And then, based on the theory of elastic wave and the summarized geological model, this paper put forwards an improved method of pseudo-method by using the theory of elastic wave and Hilbert-Huang transform. The improved pseudostatic method gives reasonable considerations to the time-frequency effects of seismic wave and its rationality has been verified by the shaking table test. This method can evaluate the safety of a slope, the happening time and the scale of landslides. At the same time, this method also can improve the high accuracy of the evaluation of the safety of the slope.

The Study on Problems and Countermeasures in Tourism Development of Farmhouse Enjoyment in Shaanxi

Farmhouse enjoyment is a newly-emerging tourism product which is developing rapidly in recent years. Farmhouse enjoyment tourism is beneficial for increasing farmers＇ incomes, and providing farmers with more employment by adjusting the industrial structure. Farmhouse enjoyment tourism has produced a huge social and economic impact. But it also has some shortages for the sustainable and stable development of farmhouse enjoyment. This article starts from the analysis of present situation of farmhouse enjoyment tourism in Shaanxi; points out the problems that appeared and proposes the corresponding measures, to help farmhouse enjoyment tourism to develop healthily and sustainably.

Estimation of Accumulated Degree Day Value of Six Landmarks within the Pupal Stage of Lucilia sericata

The present paper investigates the pupal development times ofLucilia sericata which were studied in the laboratory at six different constant temperatures （20, 22, 24, 26, 28 ℃ each ± ℃）. Lower thresholds （tL） for development were estimated from the linear regression of the developmental rates on each temperature. These data have made it possible to calculate the ADD （Accumulated Degree-Days） necessary for L. sericata to complete the larval stage and to achieve adult emergence. The minimal duration of development from oviposition to adult emergence was found to be inversely related to temperature. Additionally, six landmarks in pupal development are showed and for each of the landmarks the ADD value was calculated for every rearing temperature involved. These data assist in calculating the duration of the pupal stage based on morphological characteristics and would be of great value for future forensic entomological casework.

Existing Contradictions and Recommendations to China＇s Insurance Industry Characterized by Low-growth and Low-interest

This article seeks to analyze the contradictions and recommendations to China＇s insurance industry in the context of low-growth and low interest market. Under the pressure caused by the contradictions between the sustainable growth in the insurance premium income and the low ROI, it is very important to solve these contradictions for maintaining a sustainable and steady growth in insurance industry, at the same time, it is also favorable to play a role as a social stabilizer as well as an economic booster for insurance industry. This paper can be divided into four parts： Part I analyzes the five basic characteristics of Chinese low-growth and low-interest insurance industry; part II elaborates the principal contradictions faced by Chinese low-growth and low-interest insurance industry; part III analyzes the development environment of Chinese insurance industry; part IV proposes the recommendations to solve these contradictions.

The Identification of Three Sizes of Core Proteins during the Establishment of Persistent Hepatitis C Virus Infection in vitro

Similar to Hepatitis C virus (HCV) infection in humans, HCVcc infection can also result in persistent and chronic infection. The core protein is a variable protein and exists in several sizes. Some sizes of core proteins have been reported to be related to chronic HCV infection. To study the possible role of the core protein in persistent HCV infection, a persistent HCVcc infection was established, and the expression of the core protein was analysed over the course of the infection. The results show that there are three sizes of core proteins (p24, p21 and p19) expressed during the establishment of persistent HCVcc infection. Of these, the p21 core protein is the mature form of the HCV core protein. The p24 core protein is the phosphorylated form of p21. The p19 core protein appears to be a functional by-product generated during the course of infection. These three core proteins are all localized in the cytoplasm and can be encapsidated into the HCV virion. The appearance of the p19 and p24 core proteins might be related to acute HCVcc infection and chronic infection respectively and may play an important role in the pathology of a HCV infection.

A Geospatial Analysis of Wetland Cultivated Areas in Ile-lfe, Osun State, Nigeria

Wetlands are among the world＇s most productive environment. They are cradles of bio-diversity, providing the water and primary productivity upon which large numbers of plant and animal species depend for survival. Unfortunately, they are also among the world＇s most threatened ecosystems, owing mainly to continued drainage, urbanization, pollution, over-exploitation or other unsustainable uses of their resources. The lack of baseline wetland inventory and limited accessibility to the available ones have been identified as major limitations for sustainable use and management of wetland resources. This study therefore utilized multispectral remote sensing data and global positioning system （GPS） for mapping and assessing the spatial pattern of wetlands, particularly the cultivated ones. The images were processed using ILWIS 3.2 Academic. The combined digital image processing and visual image interpretation were used to identify and segment wetlands in the image data. The coordinates of all identified wetlands and various anthropogenic activities on them were taken using GPS. Questionnaire forms were designed and randomly administered on the households residing around the wetland areas to enable the study to assess the anthropogenic factors, which are capable of destroying the ecosystem. The result indicated that the original size of wetlands in the study area has been modified as there has been reduction in their area extent. Various anthropogenic factors such as, the conversion of wetlands to agricultural, residential and commercial land uses were majorly responsible for the modification. In conclusion, remote sensing data and GIS technology were found useful in mapping and assessing wetlands for sustainable use.