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Endoscopic identification of endoluminal esophageal landmarks for radial and longitudinal orientation and lesion location 预览
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作者 Fabian Emura Rene Gomez-Esquivel +4 位作者 Carlos Rodriguez-Reyes Petros Benias Javier Preciado Michael Wallace Luis Giraldo-Cadavid 《世界胃肠病学杂志:英文版》 SCIE CAS 2019年第4期498-508,共11页
AIM To characterize esophageal endoluminal landmarks to permit radial and longitudinal esophageal orientation and accurate lesion location.METHODS Distance from the incisors and radial orientation were estimated for t... AIM To characterize esophageal endoluminal landmarks to permit radial and longitudinal esophageal orientation and accurate lesion location.METHODS Distance from the incisors and radial orientation were estimated for the main left bronchus and the left atrium landmarks in 207 consecutive patients using white light examination.A sub-study was also performed using white light followed by endoscopic ultrasound(EUS)in 25 consecutive patients to confirm the findings.The scope orientation throughout the exam was maintained at the natural axis,where the left esophageal quadrant corresponds to the area between 6 and 9 o'clock.When an anatomical landmark was identified,it was recorded with a photograph and its quadrant orientation and distance from the incisors were determined.The reference points to obtain the distances and radial orientation were as follows:the midpoint of the left main bronchus and the most intense pulsatile zone of the left atrium.With the video processor system set to moderate insufflation,measurements were obtained at the end of the patients'air expiration.RESULTS The left main bronchus and left atrium esophageal landmarks were identified using white light in 99%and 100%of subjects at a mean distance of 25.8 cm(SD 2.3),and 31.4 cm(SD 2.4)from the incisors,respectively.The left main bronchus landmark was found to be a tubular,concave,non-pulsatile,esophageal external compression,occupying approximately 1/4 of the circumference.The left atrium landmark was identified as a round,convex,pulsatile,esophageal external compression,occupying approximately 1/4 of the circumference.Both landmarks were identified using white light on the anterior esophageal quadrant.In the substudy,the left main bronchus was identified in 24(92%)patients at 25.4 cm(SD 2.1)and 26.7 cm(SD 1.9)from the incisors,by white light and EUS,respectively.The left atrium was recognized in all patients at 30.5 cm(SD 1.9),and 31.6 cm(SD 2.3)from the incisors,by both white light and EUS,respectively.EUS confirmed that the landmarks correspond 展开更多
关键词 Esophagus Natural landmark RADIAL ORIENTATION Longitudinal ORIENTATION Four-quadrants LEFT main BRONCHUS LEFT atrium
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Crystal orientation and morphology of a lamellae in wrought titanium alloys: On the role of microstructure evolution in b processing
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作者 Huojun ZHENG Xiaoguang FAN +1 位作者 Xiang ZENG Rui ZUO 《中国航空学报:英文版》 SCIE EI CAS CSCD 2019年第5期1305-1313,共9页
To obtain high-quality aviation forgings of titanium alloys, b forging is an essential processing step which must be considered throughout a production process. In this work, the effect of b forging on the crystal ori... To obtain high-quality aviation forgings of titanium alloys, b forging is an essential processing step which must be considered throughout a production process. In this work, the effect of b forging on the crystal orientation and morphology of lamellar a was experimentally investigated in a two-phase titanium alloy. Strong dynamic recovery during b working resulted in the formation of low-angle grain boundary(LAGBb) inside b grains. The lamellar a can penetrate through the LAGBb, leading to similar intra a LAGBs on subgrain boundaries. Deformation banding occurs at high strain rates, and both diffusive and sharp boundaries of deformation bands can be observed.A continuous change of the b orientation in diffusive boundaries results in the formation of fine and disordered a lamellae without intra-lamellar boundary to hold the Burgers orientation relationship(OR). On sharp boundaries, it is prone to producing continuous grain boundary a(aGB) with a highly similar orientation along the boundaries. Meanwhile, there may exist several lower-angle boundaries within the grain boundary a for a smoother orientation change on the b grain boundary. 展开更多
关键词 b forging BURGERS ORIENTATION relationship Crystal ORIENTATION Deformation band LAMELLAR a Titanium alloy
刑事诉讼视域下的国家监察机关:定位、性质及其权力配置 被引量:1
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作者 洪浩 《法学论坛》 CSSCI 北大核心 2019年第1期144-153,共10页
随着我国《宪法修正案》《监察法》的公布,我国监察体制改革蓝图业已确立、路径亦逐渐明晰。国家监察委员会作为国家反腐败的专门机构具有位阶高、职权强、覆盖广之属性,与刑事诉讼中的其他主体之间具有较强的互动性、发展性等特色。但... 随着我国《宪法修正案》《监察法》的公布,我国监察体制改革蓝图业已确立、路径亦逐渐明晰。国家监察委员会作为国家反腐败的专门机构具有位阶高、职权强、覆盖广之属性,与刑事诉讼中的其他主体之间具有较强的互动性、发展性等特色。但从2016年试点以来,相关试点单位的改革思路和做法存在差异性;2018年《宪法修正案》虽专章对监察委员会进行了规定,但目前尚未颁行专门的《监察委员会组织法》。理论上,国家监察制度的地位、性质、职权配置等尚需探究和厘清,以指导监察制度改革的进行。在试点中监察机关的职权表现出行政权的特征,同时兼具司法权的色彩;而从《宪法修正案》《监察法》的定位来看,监察机关的职权本质上属于行政权,职能应该定位于一般监督权。为了保证国家监察职权的有效运行,以刑事诉讼为视角,在厘清国家监察制度的定位、性质基础上,对监察委员会权力进行诉讼化配置,极为必要。 展开更多
关键词 国家监察委员会 法律定位 职权性质 权力配置
意识形态视域下的美国托福考试定位研究 预览
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作者 王立群 《语言教育》 2019年第1期8-13,32共7页
美国托福考试的定位与其国家意识形态的国际传播密不可分。首先,产生于冷战背景下的美国托福考试承载着'冷战的特色基因',其功能定位在于美国意识形态的国际输出。其次,作为托福考试主办方机构之一,卡耐基教学促进基金会在慈善... 美国托福考试的定位与其国家意识形态的国际传播密不可分。首先,产生于冷战背景下的美国托福考试承载着'冷战的特色基因',其功能定位在于美国意识形态的国际输出。其次,作为托福考试主办方机构之一,卡耐基教学促进基金会在慈善中输出美国的意识形态,考试的实施推行基金会模式。第三,近年来,托福考试报考人员的低龄化趋势更彰显了其传播美国意识形态的用意,报考对象从成年人逐渐低龄化。中国政府应该从中国国家意识形态的战略安全角度出发,重新审视托福考试的定位;建立国家外语测试监管机构以掌控托福考试的现状及发展态势;科学合理地构建出国留学标准体系,以确保出国人员的意识形态不受过度影响,并最终维护国家意识形态的安全。 展开更多
关键词 意识形态 托福考试 定位
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多级拉伸挤出制备右旋聚乳酸/左旋聚乳酸复合材料的结构与性能 预览
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作者 朱一凡 李姜 郭少云 《高分子材料科学与工程》 CSCD 北大核心 2019年第9期62-66,共5页
通过自主研发的多级拉伸挤出设备,将5%右旋聚乳酸(PDLA)/左旋聚乳酸(PLLA)立构复合共混样品及PLLA对比样进行挤出。通过差示扫描量热分析、二维广角X射线衍射、扫描电子显微镜、拉伸试验研究了多级拉伸挤出下立构晶(SC)对PLLA结晶性能... 通过自主研发的多级拉伸挤出设备,将5%右旋聚乳酸(PDLA)/左旋聚乳酸(PLLA)立构复合共混样品及PLLA对比样进行挤出。通过差示扫描量热分析、二维广角X射线衍射、扫描电子显微镜、拉伸试验研究了多级拉伸挤出下立构晶(SC)对PLLA结晶性能、微观形貌及力学性能的影响。结果表明,立构晶能显著改善PLLA的结晶速度和结晶度,同时其在9个层倍增器下能进一步促进PLLA结晶。挤出样品的结晶度从6.8%提高到38%,并形成了取向的微晶网络结构。多级拉伸挤出制备的PDLA/PLLA复合材料相对于未加层倍增器挤出的PLLA材料,力学性能得到显著的提升,拉伸强度和断裂伸长率分别提高了15.8%和909.6%。 展开更多
关键词 聚乳酸 立构晶 结晶 取向
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电场极化调控共轭聚合物薄膜润湿性 预览
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作者 王世伟 闫肃 李伟 《长春工业大学学报:自然科学版》 CAS 2019年第2期112-116,F0003共6页
首次采用电场极化技术精确控制共轭聚合物(P3HT)薄膜表面的润湿性,通过调节极化条件,成功实现了对P3HT薄膜表面润湿性的精确控制,薄膜表面水接触角可以实现从疏水性到亲水性转变。通过光谱学、形貌学及接触角等表征手段,详细研究了电场... 首次采用电场极化技术精确控制共轭聚合物(P3HT)薄膜表面的润湿性,通过调节极化条件,成功实现了对P3HT薄膜表面润湿性的精确控制,薄膜表面水接触角可以实现从疏水性到亲水性转变。通过光谱学、形貌学及接触角等表征手段,详细研究了电场极化作用下共轭聚合物分子取向聚集形态及作用机理。该工作不但扩展了共轭聚合物薄膜材料的应用范围,也为分子形态学的研究奠定了基础。 展开更多
关键词 共轭聚合物 电场极化 取向 润湿性
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值班律师提供有效法律帮助的法理定位与制度构建 预览
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作者 王艺超 涂龙科 《法治社会》 2019年第2期40-50,共11页
《认罪认罚试点办法》提出“保障被追诉人获得有效法律帮助”,旨在保障被追诉人认罪认罚的明知、自愿与协商。在认罪认罚案件中,值班律师是提供有效法律帮助的正当主体,但在实践操作中,值班律师向被追诉人进行有效法律帮助受到本身定位... 《认罪认罚试点办法》提出“保障被追诉人获得有效法律帮助”,旨在保障被追诉人认罪认罚的明知、自愿与协商。在认罪认罚案件中,值班律师是提供有效法律帮助的正当主体,但在实践操作中,值班律师向被追诉人进行有效法律帮助受到本身定位以及权利缺失等因素阻碍,制度设计的初衷无法实现。作为有限的辩护人的法理定位是值班律师发展的必然趋向,值班律师的权利应当得到合理扩张,再辅之以完备的工作制度和保障制度,从而提供行之有效的法律帮助。 展开更多
关键词 值班律师 认罪认罚案件 有效法律帮助 定位 制度构建
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3D Object Detection Based on Vanishing Point and Prior Orientation
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作者 GAO Yongbin ZHAO Huaqing +2 位作者 FANG Zhijun HUANG Bo ZHONG Cengsi 《武汉大学学报:自然科学英文版》 CAS CSCD 2019年第5期369-375,共7页
3D object detection is one of the most challenging research tasks in computer vision. In order to solve the problem of template information dependency of 3D object proposal in the method of 3D object detection based o... 3D object detection is one of the most challenging research tasks in computer vision. In order to solve the problem of template information dependency of 3D object proposal in the method of 3D object detection based on 2.5D information, we proposed a 3D object detector based on fusion of vanishing point and prior orientation, which estimates an accurate 3D proposal from 2.5D data, and provides an excellent start point for 3D object classification and localization. The algorithm first calculates three mutually orthogonal vanishing points by the Euler angle principle and projects them into the pixel coordinate system. Then, the top edge of the 2D proposal is sampled by the preset sampling pitch, and the first one vertex is taken. Finally, the remaining seven vertices of the 3D proposal are calculated according to the linear relationship between the three vanishing points and the vertices, and the complete information of the 3D proposal is obtained. The experimental results show that this proposed method improves the Mean Average Precision score by 2.7% based on the Amodal3Det method. 展开更多
关键词 image analysis 3D OBJECT DETECTION prior ORIENTATION VANISHING point EULER ANGLE
热拉伸和紫外辐照对尼龙12结构和性能的影响 预览
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作者 高国峰 李晓燕 +1 位作者 戴明欣 张向阳 《广州化工》 CAS 2019年第11期66-69,共4页
以二苯甲酮为光引发剂,三甲代烯丙基异氰酸酯为光交联剂制备了共混尼龙12样品,研究了拉伸取向对尼龙12紫外交联的影响,采用DSC,XRD等对其结构进行了表征。结果表明,经紫外辐照后,尼龙12可以发生交联反应,形成交联结构,降低其结晶度,破... 以二苯甲酮为光引发剂,三甲代烯丙基异氰酸酯为光交联剂制备了共混尼龙12样品,研究了拉伸取向对尼龙12紫外交联的影响,采用DSC,XRD等对其结构进行了表征。结果表明,经紫外辐照后,尼龙12可以发生交联反应,形成交联结构,降低其结晶度,破坏其晶体结构。并且经过拉伸取向后,尼龙12结构变得规整,限制其交联反应。 展开更多
关键词 尼龙12 紫外辐照 交联 取向 性能
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流动场诱导成核剂TMC-300取向分布对聚乳酸性能的影响 预览
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作者 彭爽娟 李春海 +1 位作者 吴宏 郭少云 《高分子材料科学与工程》 CSCD 北大核心 2019年第9期109-113,共5页
聚乳酸(PLA)分子链呈半刚性,结晶速率缓慢导致PLA制品几乎都为非晶态或低结晶度态。制品的耐久性与韧性较差,极大地限制了其在工业领域的应用。文中首先添加高效有机成核剂TMC-300用以改善其结晶性能,研究了TMC-300含量对其成核效率的影... 聚乳酸(PLA)分子链呈半刚性,结晶速率缓慢导致PLA制品几乎都为非晶态或低结晶度态。制品的耐久性与韧性较差,极大地限制了其在工业领域的应用。文中首先添加高效有机成核剂TMC-300用以改善其结晶性能,研究了TMC-300含量对其成核效率的影响;随后利用多级拉伸复合应力场诱导TMC-300取向分布研究其对PLA结晶及力学性能的影响。结果表明,TMC-300在多级拉伸复合应力场的诱导下沿流动方向取向分布,继而诱导PLA片晶垂直其轴向方向生长,实现PLA片晶沿流动方向的高度取向。在PLA/1%TMC-300体系中,PLA的结晶度达到38%,拉伸强度及断裂伸长率分别达到了92 MPa与32%。 展开更多
关键词 聚乳酸 成核剂 结晶 力学性能 取向
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Entrepreneurial Leadership, Market Orientation, and Firm Performance 预览
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作者 Clement Nangpiire Paul Bangniyel 《管理研究:英文版》 2019年第3期202-213,共12页
This paper explores entrepreneurial leadership, market orientation, and firm performance. It sorts to ascertain through the literature whether entrepreneurial leadership has an influence on market orientation decision... This paper explores entrepreneurial leadership, market orientation, and firm performance. It sorts to ascertain through the literature whether entrepreneurial leadership has an influence on market orientation decision and firm performance. The review points to the fact that entrepreneurial leadership creates visionary scenarios which they used to assemble and mobilize a “supporting cast” of participants who become committed to the vision and the discovery of strategic value creation by influencing market orientation decision and thus enhancing firm performance. The study thus developed a process model as a result of the literature reviewed. The study concludes that, entrepreneurial leadership influences the market orientation decision of a firm with the help of the “supporting cast” and this helps the firm to increase its performance. 展开更多
关键词 ENTREPRENEUR ENTREPRENEURSHIP ENTREPRENEURIAL LEADERSHIP market orientation FIRM performance
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3D打印玻璃纤维/热塑性聚氨酯共混材料的性能研究 预览
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作者 汪传生 李光超 边慧光 《橡胶工业》 CAS 2019年第8期596-601,共6页
基于粉体喂料3D打印机研究3D打印玻璃纤维/热塑性聚氨酯共混材料的性能。结果表明:随着玻璃纤维质量分数增大,共混材料的拉伸强度呈先增大后减小趋势,当玻璃纤维质量分数为0.08时,共混材料的拉伸强度最大,为51.2MPa,较热塑性聚氨酯提高4... 基于粉体喂料3D打印机研究3D打印玻璃纤维/热塑性聚氨酯共混材料的性能。结果表明:随着玻璃纤维质量分数增大,共混材料的拉伸强度呈先增大后减小趋势,当玻璃纤维质量分数为0.08时,共混材料的拉伸强度最大,为51.2MPa,较热塑性聚氨酯提高41%;弯曲强度和压缩强度先减小后增大再减小,当玻璃纤维质量分数为0.15时,共混材料的压缩强度最大,为108.35MPa;冲击强度呈先增大后减小趋势,当玻璃纤维质量分数为0.08时,共混材料的冲击强度最大,为15.52kJ·m-2,较热塑性聚氨酯提高39%。 展开更多
关键词 3D打印材料 共混材料 玻璃纤维 热塑性聚氨酯 取向性 拉伸性能 抗冲击性能
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A comprehensive review of greenhouse shapes and its applications
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作者 Ravinder Kumar SAHDEV Mahesh KUMAR Ashwani Kumar DHINGRA 《能源前沿:英文版》 CSCD 2019年第3期427-438,共12页
Greenhouse technology is a practical option for the production and drying of agricultural products in controlled environment. For the successful design of a greenhouse, the selection of a suitable shape and orientatio... Greenhouse technology is a practical option for the production and drying of agricultural products in controlled environment. For the successful design of a greenhouse, the selection of a suitable shape and orientation is of great importance. Of various shapes of greenhouses, the even-span roof and the Quonset shape greenhouses are the most commonly used for crop cultivation and drying. The orientation of greenhouses is kept east-west for maximum utilization of solar radiations. Hybrid and modified greenhouse dryers have been proposed for drying of products. The agricultural products dried in greenhouses are found to be better in quality as compared to open sun drying because they are protected from dust, rain, insects, birds and animals. Moreover, various greenhouses shapes along with their applications have been reviewed. 展开更多
关键词 GREENHOUSE SHAPES DRYING solar energy AGRICULTURE products ORIENTATION
Correlation Between Crystal Rotation and Redundant Shear Strain in Rolled Single Crystals: A Crystal Plasticity FE Analysis
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作者 Hui Wang Cheng Lu +3 位作者 Kiet Tieu Yu Liu Rui Wang Jintao Li 《金属学报:英文版》 SCIE EI CAS CSCD 2019年第4期452-460,共9页
The correlation between crystal rotation and redundant shear strain in rolled single crystals was investigated by using the crystal plasticity finite element(CPFE) model in this paper. The deformation in aluminium sin... The correlation between crystal rotation and redundant shear strain in rolled single crystals was investigated by using the crystal plasticity finite element(CPFE) model in this paper. The deformation in aluminium single crystals of four representative orientations(rotated-Cube, Goss, Copper, and Brass) after rolling and plain strain compression was simulated, and the predictions have been validated by the experimental observations. In the rotated-Cube and Goss, the redundant shear strain and crystal rotation were in the same pattern, alternating along the thickness, while the relation between them was not obvious for the Copper and Brass due to their asymmetrical distributions of activated slip systems. The relations between slip system activation, crystal rotation, and shear strain were investigated based on the CPFE model, and the correlation between shear strain and crystal rotation has been built. 展开更多
关键词 CRYSTAL PLASTICITY finite element Single CRYSTAL CRYSTAL ROTATION Shear strain Orientation stability
Effect of grain size on α-variant selection in a ZrTiAlV alloy
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作者 LI FeiTao QIU Xi +4 位作者 LIAO ZhongNi LUAN BaiFeng ZHANG XinYu LIU RiPing LIU Qing 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2019年第6期982-988,共7页
Local crystallographic orientation characteristics of grains with different sizes in a ZrTiAlValloy after interrupted cooling from βphase region are investigated by electron backscatter diffraction(EBSD) technique. A... Local crystallographic orientation characteristics of grains with different sizes in a ZrTiAlValloy after interrupted cooling from βphase region are investigated by electron backscatter diffraction(EBSD) technique. A statistical analysis of EBSD data shows that bigger parent β grains present weaker variant selection than smaller grains. The relevant influences are studied by comparing the nucleation behavior of grain boundary α(GBα) and succedent growth stage in varisized grains. In-depth analysis indicates that the deviation between pole of GBα and common pole of adjacent parent β grains is responsible for the smaller degree of variant selection inside the bigger parent β grains. The formation of more than one GBα type at the β/β grain boundary with common pole in bigger grains results in obstructing each other for these variants during the following growth stage, while only one type of GBα nucleate at the β/β grain boundary with common pole in smaller grains and it can freely grow into the interior of the grains, leading to stronger variant selection in smaller β grains. 展开更多
关键词 VARIANT SELECTION EBSD BURGERS ORIENTATION relationship NUCLEATION behavior
卡车油箱盖组件包塑注射模结构设计 预览
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作者 许赟和 文根保 《模具制造》 2019年第9期34-39,共6页
卡车油箱盖组件,是由卡车油箱盖芯包塑在卡车油箱盖手柄之内。通过对卡车油箱盖组件的形体分析,找到了卡车油箱盖手柄形体上存在着形状要素和2×φ3mm型孔要素。注射模采用了三模板的模架,根据形体分析,采用了2处中模斜楔弹簧滑块... 卡车油箱盖组件,是由卡车油箱盖芯包塑在卡车油箱盖手柄之内。通过对卡车油箱盖组件的形体分析,找到了卡车油箱盖手柄形体上存在着形状要素和2×φ3mm型孔要素。注射模采用了三模板的模架,根据形体分析,采用了2处中模斜楔弹簧滑块抽芯机构和对卡车油箱盖芯定位定向的注射模包塑结构方案。上述模具结构的选用,确实能成功完成卡车油箱盖组件包塑注射成型。但抽芯机构和卡车油箱盖芯定向结构,还可进一步改进,以提高模具修复速度和降低制造费用。 展开更多
关键词 包塑 注射模 抽芯机构 定位 定向
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真理与诸种真理——论尼采、海德格尔和卢曼 预览
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作者 桂瑜(译) 余明锋(校译) 《同济大学学报:社会科学版》 CSSCI 北大核心 2019年第1期1-10,共10页
尼采对真理的去理想化和去道德化导向了虚无主义,可尼采视虚无主义为常态,对他来说问题关键不在于克服虚无主义而在于如何在其中生活。克服虚无主义毋宁是海德格尔的提法。在尼采看来,诸种真理是“为了生活的目的而简化”,是在复杂性面... 尼采对真理的去理想化和去道德化导向了虚无主义,可尼采视虚无主义为常态,对他来说问题关键不在于克服虚无主义而在于如何在其中生活。克服虚无主义毋宁是海德格尔的提法。在尼采看来,诸种真理是“为了生活的目的而简化”,是在复杂性面前获得生活指向的艺术。尼采的权力意志学说不是一种形而上学,而是一种简化和假说,是对于真理的反形而上学理解。在这一点上,卢曼与尼采相近。可尼采还要再进一步,他不但通过真理问题揭示了虚无主义的境况,而且试图在这种境况中指出新的方向。 展开更多
关键词 真理 指向 权力意志 虚无主义 视角
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影响高职学生诚信就业的主要因素研究 预览
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作者 蒋德平 《无锡职业技术学院学报》 2019年第4期85-88,共4页
就业价值取向是社会资本影响就业行为的重要前提和关键因素,深入研究高职院校毕业生的就业价值取向实则是对社会资本的深度解析,诚信就业的提出是对高职院校诚信就业教育问题的重新审视,这对高职院校就业教育机制以及就业伦理观教育研... 就业价值取向是社会资本影响就业行为的重要前提和关键因素,深入研究高职院校毕业生的就业价值取向实则是对社会资本的深度解析,诚信就业的提出是对高职院校诚信就业教育问题的重新审视,这对高职院校就业教育机制以及就业伦理观教育研究具有重要的实践意义。只有理清就业价值取向和诚信就业之间的关系,帮助高职毕业生树立正确的就业观,才能从根本上解决毕业生在就业过程中的诚信问题以及就业资源浪费问题。 展开更多
关键词 取向 塑造 引导 介入 关联性
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Research on the Characteristics,Orientation,Development and Teaching of Business English 预览
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作者 崔博远 《海外英语》 2019年第1期244-245,共2页
Business English,as a new interdisciplinary and practical language discipline,is based on language and covers the knowledge of economy,trade,management,law and other disciplines,which plays an important role in cultiv... Business English,as a new interdisciplinary and practical language discipline,is based on language and covers the knowledge of economy,trade,management,law and other disciplines,which plays an important role in cultivating talent and promoting exchanges under the background of economic globalization and business expansion.Therefore,it is very necessary and significant to study the subject.Starting from the emergence of business English,this paper will discuss the characteristics,orientation,development and teaching of business English with proposals,so as to provide some ideas and promote the better development of the subject. 展开更多
关键词 BUSINESS English DISCIPLINE ORIENTATION DEVELOPMENT and THOUGHTS on teaching
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新时期教师工作的实践研究 预览
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作者 周利秋 吴玲 +1 位作者 王馨 刘颖 《对外经贸》 2019年第2期131-135,共5页
新时期教师工作实践包括教师职业作用定位、角色定位和素养定位三个方面。在实践上要完善保障机制,让教师在岗位上有幸福感;坚持以师为本,让教师在事业上有成就感;弘扬尊师重道,让教师在社会上有荣誉感。
关键词 教师 定位 实践要求
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