试论远程英语线上导师的技能

远程英语线上导师应根据远程英语线上导学变化的特点,注重远程英语线上导师在专业知识、线上教学和作业流程、远程英语线上导学平台和交互工具使用及心理素质方面应具备的技能条件,并掌握线上带领技巧,倡导重视专业理论与专业技术兼备的"导师型"教师队伍的建设与培训,从而发展远程英语教育。

幼儿教师专业技能体系的设计与探索

幼儿教师专业技能是幼儿教师专业发展中的一个重要指标,但目前幼儿教师专业技能存在界定不清晰、标准不合理、忽视条件性技能训练等问题。将幼儿教师专业技能分为本性体技能与条件性技能两大类,构建分类递进式的专业技能训练体系,实施全方位渗透式的专业技能训练,切实提高幼儿教师专业技能。

Microbiological Transformation of Ginsenoside Rg_1

Forty-nine microbial strains were used to screen their ability for the microbiological transforma-tion of ginsenoside Rg1. Aspergillus niger (3.1858) and Absidia coerulea (3.3538) were found to convert ginsenoside Rg1 efficiently to less polar metabolites. Preparative scale transformation with both fungi Absidia coerulea (3.3538) and Aspergillus niger (3.1858) have resulted in the production of one same metabolite (MT1). Its structure was char-acterized as 6-O-b-D-glucopyranosyl-20(S)-protopanaxatriol (Ginsenoside Rh1) on the basis of its TOF-MS and 1H, 13C NMR spectral data. The biotransformation kinetic curves for Ginsenoside Rg1 and MT1 were reported for the first time, and the biotransformation pathway was proposed.

Modeling Topology and Nonlinear Dynamical Behavior of the Weighted Scale-Free Networks

An improved weighted scale-free network, which has two evolution mechanisms： topological growth and strength dynamics, has been introduced. The topology structure of the model will be explored in details in this work. The evolution driven mechanism of Olami-Feder Christensen （OFC） model is added to our model to study the self-organlzed criticality and the dynamical behavior. We also.consider attack mechanism and the study of the model with attack is also investigated in this paper. We tlnd there are differences between the model with attack and without attack.

A Review of Colloid Transport in Fractured Rocks

Recent recognition of colloid and colloidassociated transport of strongly sorbing contaminants in fractured rocks highlights the importance of exploring the transport behavior of colloids under conditions prevailing in the field.The rapid transport of colloids through fractured rocks-as affected by the hydraulic properties of the flow system,the properties of fracture surface and the geochemical conditionshas not been sufficiently elucidated,and predictions of colloid transport through fractures have encountered difficulties,particularly at the field scale.This article reviews the current understanding of the mechanisms and modeling of colloid transport and retention in fractured rocks.Commonly used experimental techniques and approaches for conducting colloid transport experiments at different scales,ranging from the laboratory to the field scale,are summarized and commented upon.The importance of various interactions(e.g.,dissolution,colloid deposition,generation,mobilization and deposition of filling materials within fractures) between the flowing solution and the fracture walls(in many cases,with skin or coating on the host rock at the liquid-solid interface) has been stressed.Colloid transport through fractures of high heterogeneity has not yet been well understood and modeled at the field scale.Here,we summarize the current knowledge and understanding accumulated in the last two decades in regard to colloid and colloidassociated transport through fractures.Future research needs are also discussed.

Synergy Model of Artificial Intelligence and Augmented Reality in the Processes of Exploitation of Energy Systems

The article presents a fragment of research and development, which objective was to develop technical tools and methodology to improve exploitation processes of energy systems. The author＇s model includes synergy of artificial intelligence and augmented reality. This solution, which combines modem technologies in order to improve the activities related to the continuity of energy supply, and reduce costs associated with the time needed to carry out exploitation activities and employment of qualified staff, is presented. This paper presents both theoretical foundations as well as the development of technical systems. The characteristics of exploitation processes of energy systems and possible technical conditions, as well as factors characterizing them, are discussed. The physical and software structures of the system and individual modules, as well as dependencies connecting them are demonstrated. The dependencies between physical and logical elements during the exploitation processes of energy systems, that determine decisions related to the evaluation of technical states and related activities are described. The advantages and limitations of the developed model which connects methods of data processing and analysis, interactive visualization processes and possible areas of application are as well discussed in detailed.

浅谈网络信息问题解决模式之三种条件技能

IPS-I-model即信息问题解决模式,该模式涵盖组成技能,规则技能和重要的条件技能。本片文章浅议英特网使用过程中所要运用的三种条件技能。

Detailed string stability analysis for bi-directional optimal velocity model

The class of bi-directional optimal velocity models can describe the bi-directional looking effect that usually exists in the reality and is even enhanced with the development of the connected vehicle technologies. Its combined string stability condition can be obtained through the method of the ring-road based string stability analysis. However, the partial string stability about traffic fluctuation propagated backward or forward was neglected, which will be analyzed in detail in this work by the method of transfer function and its H∞ norm from the viewpoint of control theory. Then, through comparing the conditions of combined and partial string stabilities, their relationships can make traffic flow be divided into three distinguishable regions, displaying various combined and partial string stability performance. Finally, the numerical experiments verify the theoretical results and find that the final displaying string stability or instability performance results from the accumulated and offset effects of traffic fluctuations propagated from different directions.

Study on Flexible Power Generation Device Using Piezoelectric Film

Various ocean energy technologies have been developed that harness several kinds of renewable energy resources of the ocean. However, these technologies suffer from problems such as high construction and maintenance costs, restrictive installation requirements and damage by extraordinary weather conditions. In this paper, we propose a lightweight and FPGD （flexible power generation device） that overcomes these problems. The FPGD essentially consists of piezoelectric films and silicon rubber. Because the FPGD is small and flexible, it is anticipated to efficiently convert fluid energy into electrical energy even when the fluid energy is low. We perform several experiments to confirm the effectiveness of the FPGD and we discuss the results.

Addressing Barriers to Off-Grid Rural Electrification in Africa： The Botswana and Namibia Experience

Africa is the most affected continent with energy poverty. Wood fuel is the main source of energy for remote and rural populations. At the same time, most parts of Africa are endowed with abundant solar energy. Together with a highly developed global solar industry and ever declining cost of solar systems, solar has unprecedented potential to combat energy poverty in Africa. However, dissemination of solar systems is faced with a number of barriers and challenges amongst where sustainable financing and lack of technological support for installation, maintenance and repair of systems are the most significant. This paper discusses the cases of Botswana and Namibia where financing schemes based on different partnership models have been successfully implemented. These schemes have the potential for success and adaptation by countries with similar socio-economic conditions. We conclude with recommendations on training programs for different levels of intervention to overcome the lack of technological support.

Conductometric sensor based on oxytetracycline imprinted polymer membrane

A conductometric sensor sensitive to oxytetracycline hydrochloride （OTC.HCI） was developed on the basis of utilizing OTC.HCl imprinted polymer, synthesized under the optimized conditions by using non-covalent imprinted technology with OTC.HCl as a template, MAA as a functional monomer, and EGDMA as a cross-linker, which were the composition of the sensing membrane. The responses increased linearly with the increase of OTC.HCl concentration in the range of 0.99-12.0 μM. The response mechanism of the sensor was also discussed.

Research on the Design and Energy Saving of New Rural Residential in the Southwest Area

The paper use advantage of local natural resources, greening and sufficient water resources, combine natural ecological environment design with rural architecture, and fully consider local economic base and material technical conditions, and takes site selection and planning, architectural design technology as the two core aspects to study rural residential energy conservation, improving thermal environment of indoor residential that use of nature building energy saving technique, efforts to reduce the use of mechanical equipment system, thereby reducing the rural residential building energy consumption.