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Influence of consumption experiences on customers' satisfaction:an empirical study on fresh farm products in Wuhan, China

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Ecological Economy 2007年第2期3卷 149-158页

作者： Li chuncheng zhang Juntao Li Chongguang College of Economics Management Huazhong Agricultural UniversityWuhan 430070P.R.China

Which factors influence customers’ satisfaction? Which way or path does each factor influence and decide customers’ satisfaction? These problems are the focuses of the research on customers’ satisfaction. This paper analyzes the survey data from some customers in the fresh farm food supermarket of Wuhan City with factor analysis method, multiple linear regression method, etc. The analysis results reveal that: 1) the consumption experiences decide custom- ers’ satisfaction degree through influencing the customers’ expectation and the perceived performance, namely the consumption experiences is the important factor which decides customers’ satisfaction; 2) the consumption experiences that influence customers’ satisfaction is a multi-dimensional construct, including such four dimensions as product consumption experience, service experience, shopping convenience experience, supermarket environment experience; furthermore, the degree that different consumption experiences influence customers’ satisfaction is diverse, and the product consumption experiences are the most important factor. This paper is of realistic significance to a certain extent to enrich the theoretical research on customers’ satisfaction and promote the practice of agricultural product marketing.

关键词： Consumption experiences Customers' satisfaction Influencing factor

MoS2-based anode materials for lithium-ion batteries:Developments and perspectives

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Particuology 2024年第4期87卷 240-270页

作者： Lianyu Zhao Yishan Wang chuncheng Wei Xiaoxiao Huang Xueqian zhang Guangwu Wena School of Materials Science and Engineering Shandong University of TechnologyZibo255000China Schoolof Materials Science and Engineering Harbin Institute of TechnologyHarbin10001China

In recent years,significant progress has been achieved in the creation of innovative functional materials for energy storage and *** to their distinct physicochemical characteristics,ultrathin nanosheets composed of common layered transition metal sulfide materials(MoS2)have demonstrated promise as high-capacity anode materials for lithium-ion batteries(LIBs).Nevertheless,their practical application is severely limited by the tendency of monolayer nanosheets to restack due to strong van der Waals forces,dramatic volume changes during successive cycles,and low intrinsic *** research advances have shown that composite structures and nanowire morphologies with specific morphologies effectively overcome these *** paper reviews the recent research progress on molybdenum disulfide-based composites as anode materials for LIBs and discusses in detail the struc-tural characteristics of pure molybdenum disulfide and other composite forms of molybdenum *** addition,the phase engineering,defect engineering,and lithium storage mechanisms of molybdenum disulfide and the synthesis of molybdenum disulfide-based nanocomposites by different preparation methods are focused ***,we review the design(structure),recent developments,and challenges of novel anode materials and consider their electrochemical performance in Li-ion batteries.

关键词： Lithium-ion battery MoS_(2)-Based anode composites Synthesis methods Defect engineering Lithium storage mechanism

Cobalt phosphide-based composites as anodes for lithium-ion batteries:From mechanism,preparation to performance

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Particuology 2024年第5期88卷 11-31页

作者： Bo Lan Yishan Wang Jialei Lu Dongdong Liu chuncheng Wei Xueqian zhang Xiaoxiao Huang Guangwu Wen School of Materials Science and Engineering Shandong University of TechnologyZibo255000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China School of Materials Science and Engineering Harbin Institute of TechnologyWeihai264209China

With the further requirements of electronic products and powered vehicles,the development of a new generation with low-voltage and high-capacity anode materials is crucial for lithium-ion batteries(LIBs).Transition metal phosphides,especially cobalt phosphide(CoP)composites,have become a research hotspot for LIBs anode materials in recent years due to their high theoretical specific capacity,low polarization,and suitable voltage *** review first systematically discusses the lithium storage mechanism and preparation methods of CoP in current ***,the applications of CoP anode materials in LIBs are categorically reviewed,including the composites of CoP with various types of carbon materials and ***,the challenges and future development directions of CoP anode materials are summarized to provide guidance for further improving the lithium storage performance of CoP and its practical applications.

关键词： CoP Composites Preparation Anodes Lithium-ion batteries

Development of Networked NC Practical Training System

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Development of Networked NC Practical Training System

Bias distribution and regulation in photoelectrochemical overall water-splitting cells

作者： Hongmei Fan chuncheng zhang School of automation Nanjing institute of technology

With the development of information technology,networked education has become the *** is one of the effective measures to solve many problems in higher education to make full use of the modern information technology educational resources and to carry out the professional teaching based on network *** meet the needs of networked teaching and experiments of NC（Numeric Control） principle course,this paper develops a web-based NC practical training system based on WINDOWS operating system,which uses Tomcat to build a WEB server,and uses JAVA language to manage ORACLE *** networked NC practical training system provides a good platform for the students majoring in numeric *** platform can not only deepen their understanding and mastery of numerical control expertise,but also cultivate their ability of system design and development.

关键词： Networked teaching Numeric control Project practice

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National Science Review 2024年第4期11卷 141-150页

作者： Kun Dang Siqin Liu Lei Wu Daojian Tang Jing Xue Jiaming Wang Hongwei Ji chuncheng Chen Yuchao zhang Jincai Zhao Key Laboratory of Photochemistry CAS ResearchEducation Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

The water oxidation half-reaction at anodes is always considered the rate-limiting step of overall water splitting（OWS）,but the actual bias distribution between photoanodes and cathodes of photoelectro chemical（PEC） OWS cells has not been investigated *** this work,we find that,for PEC cells consisting of photoanodes（nickel-modified n-Si [Ni/n-Si] and α-Fe2O3） with low photovoltage(Vph 1V,the bias required for cathode activation can be significantly reduced,exhibiting a kinetics-controlled *** investigations show that the bias distribution can be regulated by tuning the electrolyte pH and using alternative half-reaction ***,a volcano plot is presented for the rational design of the overall reactions and unbiased PEC *** by this,an unbiased PEC cell consisting of a simple Ni/n-Si photoanode and Pt cathode is assembled,delivering a photo current density of 5.3±0.2 mA cm-2.

关键词： photoelectrochemistry overall reaction cell bias distribution photoanode water splitting

一种可用于蛛网膜下腔阻滞中不同药液比重教学的3D透明椎管模型研究

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中国毕业后医学教育 2024年第4期8卷 304-307页

作者：赵元愉潘乃凡孙旭芳刘畅关慧文封俊杰程圣权张霄张春城中山大学附属第八医院(深圳福田)麻醉科广东深圳518000 吉林大学第一医院麻醉科吉林长春130000 吉林大学第二医院麻醉科吉林长春130000

目的评估吉林大学第二医院麻醉科发明的应用3 D打印技术制造的人体透明椎管管腔模型是否符合蛛网膜下腔阻滞中不同药液比重教学的需要。方法选取该院2021级麻醉科住院医师19人进行蛛网膜下腔阻滞教学培训,在3 D人体透明椎管模型实验平台... 详细信息

目的评估吉林大学第二医院麻醉科发明的应用3 D打印技术制造的人体透明椎管管腔模型是否符合蛛网膜下腔阻滞中不同药液比重教学的需要。方法选取该院2021级麻醉科住院医师19人进行蛛网膜下腔阻滞教学培训,在3 D人体透明椎管模型实验平台上,使用电子泵匀速泵入定量的亚甲蓝染色不同比重局麻药液,观察并记录药液扩散规律,及完成既定调查问卷内容填写。结果通过3 D打印透明椎管实验平台可以直观观察到不同比重局麻药的扩散规律,轻比重药液沿呈梭形贴在管腔上侧壁向头尾侧扩散,扩散范围和速度较等比重和重比重更广、更快;等比重药液在管腔内均匀分布并扩散,扩散范围比重比重和轻比重小;重比重药液侧卧位时范围呈梭形并大部分堆积在骶尾侧,在改变体位时向位置更低的部分进行扩散。84.2%的住院医师认为该模型弥补了视频教学的不足;89.5%认为该模型教学提升了对腰麻穿刺操作的理解,且模型演示的药液扩散更加容易理解;94.7%推荐该模型可以进行今后的腰麻教学。结论不同比重局麻药液在透明椎管模型内扩散情况不同,符合在腰麻中不同药液比重教学的需要。

关键词：麻醉学腰麻阻滞平面住院医师规范化培训

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ZL205A铝合金基座低压铸造工艺改进

特种铸造及有色合金 2021年第2期41卷 258-261页

作者：张春成海装西安局成都610000

针对ZL205A铝合金基座铸件出现的缩松、缩孔及气孔等缺陷,分析了原低压铸造工艺,检测了压铸件的品质与力学性能,分析了缺陷产生原因。通过开设排气排渣通道、提高浇注温度、降低浇注速度、增加顶部安装边、使用冷铁和石墨及铬铁矿砂对... 详细信息

针对ZL205A铝合金基座铸件出现的缩松、缩孔及气孔等缺陷,分析了原低压铸造工艺,检测了压铸件的品质与力学性能,分析了缺陷产生原因。通过开设排气排渣通道、提高浇注温度、降低浇注速度、增加顶部安装边、使用冷铁和石墨及铬铁矿砂对铸件进行整体激冷等工艺措施,解决了基座铸件内部的缺陷,生产出了合格的ZL205A中大型基座铸件。

关键词： ZL205A 低压铸造铸造缺陷工艺改进

Research for new method for high-precision non-contact measurement of rotate speed

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微计算机信息 2008年第4期 74-76页

作者： LIU YAN ZUO chuncheng zhang YUMEI LI LIGANG(College of Mechanical Science and Engineering, Jilin University,Changchun 130025) (ShanDong Institute of Business and Technology,YanTai 264005)

This paper explores a kind of new method of high-precision non-contact measurement of rotate speed, to acquire data with a laser CCD displacement sensor, and separate the low-frequency signal and high-frequency noise of the signal with the small-wave multi-frequency analysis method, to pick up the frequency for the separated low-frequency signal as the Nquist sampling theorem, to get the rotate speed to be measured. The experiment has proved this measurement method has the very good feasibility and effectiveness.

关键词： Laser CCD Non-contact measurement Multi-frequency analysis Rotate speed

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温度场对航空发动机转子超转破裂的影响

航空学报 2019年第10期40卷 131-138页

作者：张春成汪好陈国光中国航发商用航空发动机有限责任公司

CCAR33.27超转适航要求,分析和试验确定的超转转速,必须基于温度和温度梯度的最不利组合。因此,研究温度和温度梯度对超转破裂的影响有非常重要的意义。以某型航空发动机低压6级涡轮转子为例,采用极限应变方法开展了转子部件的超转破裂... 详细信息

CCAR33.27超转适航要求,分析和试验确定的超转转速,必须基于温度和温度梯度的最不利组合。因此,研究温度和温度梯度对超转破裂的影响有非常重要的意义。以某型航空发动机低压6级涡轮转子为例,采用极限应变方法开展了转子部件的超转破裂分析,对比了常温和高温(红线转速对应的温度分布)下转子关键轮盘应变分布趋势和应变增长规律、预测的超转破裂的起始位置和破裂转速等轮盘超转特性;针对超转破裂分析,提出了在高温条件下,经过常温超转破裂试验验证的方法应用的有效性条件。低压涡轮转子的分析结果也显示,红线转速对应的温度状态下,轮盘超转破裂转速比常温下显著降低,而高温下材料屈服强度的大幅降低则是破裂转速下降的主要原因。

关键词：航空发动机转子超转破裂温度尺寸