Requirements ranking based on crowd-sourcing high-end product USs

Based on the characteristics of high-end products,crowd-sourcing user stories can be seen as an effective means of gathering requirements,involving a large user base and generating a substantial amount of unstructured feedback.The key challenge lies in transforming abstract user needs into specific ones,requiring integration and analysis.Therefore,we propose a topic mining-based approach to categorize,summarize,and rank product requirements from user stories.Specifically,after determining the number of story categories based on py LDAvis,we initially classify“I want to”phrases within user stories.Subsequently,classic topic models are applied to each category to generate their names,defining each post-classification user story category as a requirement.Furthermore,a weighted ranking function is devised to calculate the importance of each requirement.Finally,we validate the effectiveness and feasibility of the proposed method using 2966 crowd-sourced user stories related to smart home systems.

Investigation of Erosion Corrosion Caused by Drinking Water in the Faucet with Computational Fluid Dynamics

In this study,the reason for erosion-corrosion of drinking or mains water in the faucet was investigated by computational fluid dynamics.Pipes used in homes,the service sector,and industry are responsible for transporting different types of fluids from one place to another.Considering the faucet design,the SolidWorks program was used for 3D studies.In-faucet flow analyses were performed using Ansys Fluent,a computational fluid dynamics program based on the finite volume method.In the analyses,lime particles were chosen.At the end of the analysis,the amount of erosion in the faucet was obtained.

Investigation and Analysis of the Linguistic Landscape in High-end Consumer Business District in Guangzhou——Taking TaiKoo Hui as an Example

Linguistic landscape has become an emerging research topic in sociolinguistics due to the development of urban linguistic landscape.Based on the development of linguistic landscape in TaiKoo Hui,its diverse characteristics are analyzed,and the language signs,usage,and codes are summarized.It is found that there is poor transmission effect of multilingual landscape information and improper use of linguistic landscape in TaiKoo Hui.This paper concludes that the linguistic landscape of Taikoo Hui can be optimized from two aspects to enhance its attractiveness and competitiveness,including improving the informational function of foreign language signs and regulating the use of linguistic landscape.

恒温水嘴国内外标准探究——以加温技术要求为例

本文对国内外恒温水嘴相关标准进行比对,分析了标准在性能要求、检测方法等方面的差异,并对相关标准中的指标修订提出建议.希望本研究能为相关标准的完善和产品质量安全水平的提高提供一些参考.

电感耦合等离子体质谱法测定陶瓷片密封水嘴中铅析出量

采用电感耦合等离子体质谱法(ICP-MS)测定不同样品中铅元素析出量,研究陶瓷片密封水嘴中铅元素析出量影响因子。实验通过定制样品控制变量,按GB 18145-2014对样品进行浸泡并收集浸泡液,计算铅析出量统计值(Q)。结果显示原材料中铅含量、内腔体积、电镀工艺3个因素是影响陶瓷片密封水嘴铅析出量的关键因素。

Seismic Design Strategy of High Pier Bridge

China’s infrastructure construction has been continuously improving in recent years,especially its highway construction,which spans from north to south and connects east to west.Some special areas are also interconnected through bridges,but constructing highway bridges through complex terrains or across valleys and mountain gullies presents significant challenges,requiring an increase in the height of bridge piers.These bridge piers generally reach tens or even hundreds of meters in height.Furthermore,the construction of these high-pier bridges is becoming increasingly widespread.Not only do they pose greater construction challenges,but they also have higher requirements for seismic resistance.This article primarily analyzes the characteristics of high-pier bridges and proposes seismic design schemes,calculation methods,and design strategies to enhance the construction quality of high-pier bridges.

A Review on Self-Recovery Regulation(SR)Technique for Unbalance Vibration of High-End Equipment

The high-end equipment represented by high-end machine tools and aero-engines is the core component of the national intelligent manufacturing plan,and the mass unbalance is the main reason for its excessive vibration,that seriously impacts the operation efficiency and running life of the equipment.In order to change the traditional way that the fault of equipment can only be repaired by human,the self-recovery mechanism of human and animal are given to the equipment in this paper,which forms the self-recovery regulation(SR)system for unbalance vibration of high-end equipment.The system can online generate the self-recovery force to restrain the unbalance vibration of the equipment in operation,which is an important direction for the development of the equipment to the advanced intelligent stage.Based on the basic principles of SR technique,the typical engineering application cases of this technique in the field of aeroengine and high-end machine tools are introduced,and four related studies promoting the development of this technique are summarized and analyzed in turn.It includes feature extraction,imbalance location,regulation method and balancing actuator.Self-recovery Regulation(SR)Technique is an important way to realize intelligent manufacturing and intelligent maintenance.Relevant research can lay a technical foundation for the development of high-end equipment with self-health function.

High-end equipment development task decomposition and scheme selection method

Decomposition of tasks and selection of optimal schemes are key procedures in high-end equipment development processes.However,such procedures are highly innovative,technology intensive,interdisciplinary,and multi-party engineering projects,making the decomposition and scheme selection more difficult and complicated than that in the development of ordinary equipment.In this study,we consider three factors,namely,functional structure,task granularity,and task feasibility in task decomposition of high-end equipment development.Based on the principles of systems engineering,a method of task decomposition is proposed.As for decomposition scheme selection,a method based on the superiority and inferiority ranking(SIR)method mixed information and multiple attribute decision making is proposed by considering attributes of scheme feasibility,uncertainty risk and task integration complexity.To verify the proposed method,development of a military electric vehicle is used as an example to demonstrate the calculation process.

Developing newly emerging high-end industries in the low-carbon economy

Global warming has exerted severe challenges on the sustainable development of economic society and the food security,resource security,energy security and ecological security of the world.Low-carbon economy has become the current trend of the global economic development.Thus,the industrial development of China must seek the institutional innovation and technological innovation so as to improve the efficiency of energy.High-end industry has become the main factor of the future development of the economic society.Thus,to develop the high-end industry is an important approach to realize low-carbon economy.This paper explores the strategies of the development of newly emerging high-end industries against the background of low-carbon economy form such perspectives as effective use of resources,the improvement of independent innovative ability,and leading the high-end,high quality and high efficiency industries to the important region.

Effects of water flow volume on the isolation of bacteria from motion sensor faucets

Water outlets for washing hands and medical equipment are essential for preventing hospital infection. The present study clarified the effects of water flow volume on the identification and quantitative evaluation of bacteria found around spouts in the 17 hand-washing stations. Pseu-domonas aeruginosa was detected from 4 sta-tions before adjustment and 2 after adjustment. Although no significant difference was identified in the detection rate of P. aeruginosa (p = 0.368), when combining P. aeruginosa and glucose non-fermentative Gram-negative bacilli (NFB), the number of stations with P. aeruginosa and/or NFB decreased significantly from 15 before adjustment to 9 after adjustment (p = 0.023). Before adjust-ment, quantity of bacteria was “2+” for 3 stations and “1+” for 7 stations, but was “1+” for 3 stations and “2+” for 0 stations after adjustment. These results show that quantity of bacteria could be reduced from spouts by adjusting flow volume. These results were also supported by experiments for cleanliness using Adenosine 5’-triphosphate bioluminescence me- thod.

Evaluation of different Krylov subspace methods for simulation of the water faucet problem

In this study,a one-dimensional two-phase flow four-equation model was developed to simulate the water faucet problem.The performance of six different Krylov subspace methods,namely the generalized minimal residual(GMRES),transpose-free quasi-minimal residual,quasi-minimal residual,conjugate gradient squared,biconjugate gradient stabilized,and biconjugate gradient,was evaluated with and without the application of an incomplete LU(ILU)factorization preconditioner for solving the water faucet problem.The simulation results indicate that using the ILU preconditioner with the Krylov subspace methods produces better convergence performance than that without the ILU preconditioner.Only the GMRES demonstrated an acceptable convergence performance under the Krylov subspace methods without the preconditioner.The velocity and pressure distribution in the water faucet problem could be determined using the Krylov subspace methods with an ILU preconditioner,while GMRES could determine it without the need for a preconditioner.However,there are significant advantages of using an ILU preconditioner with the GMRES in terms of efficiency.The different Krylov subspace methods showed similar performance in terms of computational efficiency under the application of the ILU preconditioner.

China’s High-end Manufacturing on the Rise

IN recent years, China’s high-end machinery and equipment, as well as advances in engineering have created miracles.“Create in China” rather than “Made in China” has been introducing China’s advanced technological innovations to the world. The book is composed of five chapters, each covering achievements China has made in the following five specific fields: aerospace, high-speed rail, bridges, supercomputers, and new energy, which are the shining jewels in China’s industrial crown.

Training Plan for Software Engineering Top Talents Based on the Demand for High-end Talents in the Industry

The paper illustrates the reason of the lack of talents with outstanding innovative practice ability and engineering leadership has become a great obstacle for many industries, represented by the software industry, to develop along with the new era, and restricted the evolution of these industries toward the high end. With the target of training talents with innovation capacity and engineering leadership, the training plan for top talents based on the demand for high-end talents in the software engineering industry is put forward, and analyses are given on significant aspects including the development of the training resource system, the screening of students and the selection of enterprises, the teaching staff construction for university-enterprise cooperation, the establishment of a management system with joint effort for talents development, and the construction of process quality guarantee mechanism. In the end, for the implementation of the training plan, it is pointed out that the university-enterprise cooperative development mechanism should be perfected, the talents development practice should be enhanced, the personalized training of students should be emphasized, and the innovative ability in practice and the engineering leadership of students should be practically improved.

高端水龙头曲线设计和制造技术的研究

高端水龙头具有品质优,外形简洁、大气、实用,表面涂层美观持久不变色和功能齐全等诸多特点,深受消费者的欢迎,极大地方便了用户的盥洗取水和用水需求,从而提高了用户和其他消费人群的日常生活品质。采用美学理念科学合理地设计高端水龙头的外形曲线和制造工艺,使高端水龙头外形更美观;并通过高性能铍青铜模具低压铸造成型,采用磁控溅射表面处理工艺,使其制造过程更加环保,其成品更符合大众的审美观点和实用需求。主要研究探讨了一款高端水龙头的曲线设计和工艺制造过程,对同行业同类产品的外形设计和制造具有一定的参考价值。

Foreign Investment Shifting to High-end Link in Industrial Chains

In October,the national consumption market continued to maintain the momentum of rapid growth.Retail sales of national social consumer goods in October amounted to RMB 3.11 trillion,up10%year on year.From January to October,retail sales of national social consumer goods increased 10.3%,the same growth as that of the first three quarters.According to the monitoring of the MOFCOM,in October,5,000major retail businesses increased 4.6%

ZTE High-end Routers Product Enters European Market

ZTE Corporation, the fastest growing global telecommunications equipment and network solutions provider, has been awarded a contract to

Kangquan-Brand Water Mineralization & Purification Device for Faucets

The highly efficient KQ series Kangquan brand water mineralization and purification devices for faucets, produced by the Tianjin Kangquan Purification Equipment Factory, enables people to obtain pure mineralized water from their taps. The products combine the strong points

Based on the Talent Accumulation Effect of High-end Equipment Manufacturing Industry Competitiveness Research

In the current economic development, the competitiveness of the traditional pattern is backward, so under the background of the high-end equipment manufacturing industry development facing of great pressure, how to obtain new competitive power to achieve sustained competitive advantage, how to develop from equipment manufacturing power to the development of equipment manufacturing power becomes the focus of the present. In this paper, based on talent accumulation effect, then analysis the advantages of high-end equipment manufacturing industry talents converging forces and its access to obtain talent agglomeration competitiveness.

High-End HTPC机箱

自从High—End级的HDTV影片成为影音发烧友们的新宠，播放HDTV的HTPC电脑仿佛成了客厅的首选影音设备之一，但要家人接受把普通电脑机箱放入客厅的事实可远没有接受HDTV动人的画面那样容易．因此，各式各样的HTPC专用机箱相继出现．它们的设计理念只有一个让电脑从外观上看起来更像是一台影音设备．我们今天要介绍的就是这样一款“High—End”级精品。

Analysis on the High-end Feeding System and the Application Scenarios on the Lake Sheep Barn Feeding Scale Breeding Technology Research

In this paper, we conduct research on the high-end feeding system and the application scenarios on the lake sheep barn feeding scale breeding technology research. Sheep farm reproduction for the main places, so make sure sheep pen set reasonable. At the same time, we should reduce/avoid adverse effects caused by the surroundings of the flock, and conducive to the sheep’s normal growth and reproduction.Goats engineering technology mainly includes process of design and construction, building facilities, environmental control, waste treatment technology, sheep product processing technology, such as sheep breeding engineering technology is connected to the biological technology. This paper integrates the related theories to propose the countermeasures that will be meaningful.