学科领域知识教学内容的组织——以组构式策略编写学科领域知识教学单元

学科领域知识是指特定学科内具有一定相关性、逻辑性和操作性的知识组成的知识组块和认知操作图式,包含学理内容、认知过程和问题条件三类知识。本文以初中数学为例,阐述学科领域知识教学内容的组织。由于当前采用"螺旋式"上升方式编排的初中数学教材高估了学生自主探究技能,忽视了基础知识,不利于学生形成完整的知识体系,因此采用组构式策略,提出将学科知识体系组构成由学理内容、认知过程和问题条件三个知识模块构成的学科领域知识教学单元进行学科教学,以提高课堂教学的有效性和学生学习的质量。

论严歌苓的模块组构式写作

严歌苓的写作看似千变万化,丰富多彩,但实际上却具有一种模块组构的特性,内里比较单一。模块组构的写作方式既高产,也自我重复,呈现出一种职业化写手的工业化生产特性,是一种精致的平庸。对严歌苓写作的这一特性进行深入研究不仅有助于人们正确地认识严歌苓作品的优劣,而且对于当下文坛也有一定的启示意义。

论散文审美意象的叠合式组构

在散文创作中 ,审美意象的组构是一个重要环节。散文审美意象的组构方式是多种多样的 ,叠合式组构就是其中的一种。叠合式组构可分为同体分解式叠合、同体异时式叠合、同体异境式叠合和异体共性式叠合。运用这些叠合组构方式对不同的形象画面进行剪辑、叠合、组接 ,可以表现出不同的审美意蕴和情感色彩 。

教学实践中如何组织学科内容的两种教学策略探讨——基于学科领域知识的背景

学科领域知识从学科知识内容的知识属性和学生学习的认知特性重构学科知识。在研究学科领域知识的过程中,根据现有教材的一些不足之处以及学科领域知识具有很强的操作性等特点,相关研究者提出学科教学中可以引入学科领域知识,开展学科领域知识教学。在学科教学实践中,教师可以运用组构式和补充式两种基本的教学策略进行教学。研究表明两种教学策略都能显著优化学生的知识结构。

Supporting web services reuse by semantic service component and composition pattern

Due to the fact that the existing web service description methods cannot address the issue of service reuse of various levels of granularity, the concept of service component is introduced, which packages together web services and choreography, and their operations and properties are presented in a consistent and uniform manner. Service components are published externally as normal web services and can thus be employed by webbased applications. In order to improve reusability and testability of service components, the concept of composition pattern is also proposed, which presents the relationships among service components. The relationships and relationship compositions have a rigorous semantic, so that composite components can be validated at the configuration stage. The composition patterns support to integrate service components of various levels of granularity. Experience indicates that the application assembly can effectively be conducted by understanding, selecting, and reusing components easily.

The relation between modes of lithologic association and interlayer-gliding structures in coal mine

As a case study of the Panji No.1 Coal Mine in Anhui Province, based on thesite measured and statistical data, summarized the lithologic associations, characteristicsand distribution laws of interlayer-gliding structures and tectonic coal in the No.11-2 coalseams.The results show that 9 modes of lithologic association can form interlayer-glidingstructures.It is more easy for rock slip to occur when the lithologic associations are mainroof + coal seam + immediate floor type, compound roof+immediate roof + coal seam +immediate floor type and immediate roof + coal seam + immediate floor type.Lithologicassociations of roof and floor are the precondition to the formation of interlayer-glidingstructures.

A novel design of power management integrated circuit with 90 plus efficiency used in AC/DC converter

Recently, resonant AC/DC converter has been accepted by the industry. However, the efficiency will be decreased at light load. So, a novel topology with critical controlling mode combined with resonant ones is proposed in this paper. The new topology can correspond to a 90 plus percent of power converting. So,a novel topology of an state of art integrated circuit, which can be used as power management circuit, has been designed based on the above new topology. A simulator which is specifically suitable for the power controller has been founded in this work and it has been used for the simulation of the novel architecture and the proposed integrated circuit.

Equivalent Response Estimation of Structural Systems Subjected to Long-Period Ground Motion

Long-period ground motion has become an important consideration because of the increasing number of large and long-period structures.Therefore,a thorough investigation on the formation and characteristics of longperiod ground motion is desirable for engineering applications.In this work,an analytical study is performed to examine the effect of several parameters and the combining mode for equivalent harmonic components on the dynamic response of systems.The results of the work show that the harmonic components in equivalent ground motion are evidently influenced by the intensity rise time,duration,phase and combining mode.Moreover,the long-period ground motions are simplified and simulated by separate harmonic components through proper combination.The findings of the work are believed to be useful in the selection of input ground motion in structural seismic analysis.

A Breakthrough of Primary Structure in Indeterminate Analysi--Irregular Force Method and Irregular Displacement Method

As the strict limitation of primary structure in traditional force method and displacement method in indeterminate analysis may lead to complicated high-order linear equations, a breakthrough of the limitation, i.e., the application of irregular force method and irregular displacement method, would be introduced in this paper to ease the difficulty of hand computations. By using hyperstatic primary structures and partly chained primary structures, the primary structures of force method and displacement method are reformed, and the order of the system is decreased. The technique is explained through examples. The significance of the new method is summarized.

Vacuum deposited film growth,morphology and interfacial electronic structures of 2,7-dioctyl[1]benzothieno[3,2-b]benzothiophene(C8-BTBT)

Interfaces play critical roles in electronic devices and provide great diversity of film morphology and device performance.We retrospect the substrate mediated vacuum film growth of benchmark high mobility material 2,7-dioctyl[1]benzothieno[3,2-b]benzothiophene(C8-BTBT)and the interface electronic structures.The film growth of C8-BTBT molecules is diversified depending on the substrate-molecule and molecule-molecule interactions.On atomic smooth substrates C8-BTBT film grows in layer-by-layer mode while on coarse substrate it grows in islands mode.The initial molecular layer at dielectric,semiconductor and conductive substrates displays slight different lattice structure.The initial molecule orientation depends on the substrate and will gradually change to standing up configuration as in bulk phase.C8-BTBT behaves as electron donor when contacting with dielectric and stable conductive materials.This usually induces a dipole layer pointing to C8-BTBT and an upward bend bending in C8-BTBT side toward the interface.Although it is air stable,C8-BTBT is chemically reactive with some transition metals and compounds.The orientation change from lying down to standing up in the film usually leads to decrease of ionization potential.The article provides insights to the interface physical and chemical processes and suggestions for optimal design and fabrication of C8-BTBT based devices.

A Kind of Sustainable Craft Making： Equal and Flexible Participation in Piecing Acehnese Hat

Terms of sustainable and sustainability have been employed in various sectors and fields since around 1990. To make a society sustainable needs to find ways of having sustainable local activities. The ways may be to find and revitalize local resources, or to support new life styles by accepting outsider＇s new ideas. I see those ways often taken from a perspective that the ways require a structure or institutional organization. To explore in-between ways, it would be better to have an alternative perspective and useful to learn from Southeast Asian cases of managing diversity while accepting new ways （cf. Reid, 2015）. In this essay, I focus on a sustainable craft making of a men＇s hat kopiah meuketob in Aceh, Sumatra, which is traditional item for marriage but has been used in various imaginative ways and has been shaping a regional ＂craft-scape.＂ I examine such ways and various facets of making the hat and conclude that a lesson from the case for making things sustainable is equal and flexible ways of participating in production processes.

System of Combined Foundation for Tall Buildings

Location of the heavily loaded building on the ground of the small load capacity requires application of the appropriate foundation structure. The required foundation system is most often deep, it is expensive and its cost increases significantly when the building is located in earthquake area or in mining damage sector. The proposed structural system of the combined foundation makes possible to design and to construct a very stable and relative inexpensive foundation structure, which can obtain an extremely large horizontal surface and which can be placed not deeply beneath the terrain level. It can be a very solid support structure for a tall building placed on very weak subsoil and at the same time located in seismic area. This system can be applied not only for new buildings but it can be used for the existing buildings and moreover for straighten of the inclined objects. Due to special arrangement of component parts the combined foundation possesses inherent features of a vibration damper, what is highly desirable if buildings have to be located in earthquake areas. When the aboveground storeys structure has some similar patterns with structural form of the combined foundation then the structural system of the whole building obtains coherent structural characteristics and it is called the combined structural system of the tall building. Suitable application of this system makes possible to design high-rise buildings having interesting and unique architectonic forms, what is presented on a selected example.

Development Strategies of E-commerce for Small and Medium - sized Enterprises

In the economic structure of our country, small and medium-sized enterprises （SMEs） are the most important part of the backbone, with the continuous popularization of the Internet, e-commerce has gradually become a business model that the current small and medium enterprises must face and accept, The development of enterprises is of great signifi cance. In this context, the article first introduced the importance of the development of e-commerce SMEs, and then based on the actual operation of the community put forward and analyzed the current e-commerce development under the existing problems, and finally based on the actual lack of effective Development Strategy of E - commerce for Small and Medium - sized Enterprises.

EXTERNAL AND INTERNAL CONTROL IN PLANT DEVELOPMENT

Bodies of plants are modularly organized. Development proceeds by adding new modules to open endings with a potential for branching. Each module is autonomous to some extent. Development relies on the self-organized patterns that emerge from the interactions of individual modules. Interactions include both competition and cooperation,and several types of positive and negative feedback loops are involved. Development can be open to external influences, thus enabling the plant to adjust its form to the environment,for example, to the spatial distribution of ecological resources. This paper provides a review on adaptive plasticity in plants.