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React quickly : painless web apps with React, JSX, REDUX, and GraphQL
Successful user interfaces need to be visually interesting, fast, and flowing. The React.js JavaScript library supercharges view-heavy web applications by improving data flow between UI components. React sites update visual elements efficiently and smoothly, minimizing page reloads. React is developer friendly, with a strong ecosystem to support the dev process along the full application stack. And becuse it's all JavaScript. React is instantly familiar. React Quickly is the tutorial for web developers who want to get started fast with React.js. Following carefully chosen and clearly explained examples, you'll learn React development using your existing JavaScript and web dev skills. You'll explore a host of different projects as you learn about web components, forms and data.\"--Back cover.
Book
Improving manual reviews in function-centered engineering of embedded systems using a dedicated review model
In model-based engineering of embedded systems, manual validation activities such as reviews and inspections are needed to ensure that the system under development satisfies the stakeholder intentions. During the engineering process, changes in the stakeholder intentions typically trigger revisions of already developed and documented engineering artifacts including requirements and design specifications. In practice, changes in stakeholder intentions are often not immediately perceived and not properly documented. Moreover, they are quite often not consistently incorporated into all relevant engineering artifacts. In industry, typically manual reviews are executed to ensure that the relevant stakeholder intentions are adequately considered in the engineering artifacts. In this article, we introduce a dedicated review model to aid the reviewer in conducting manual reviews of behavioral requirements and functional design specification—two core artifacts in function-centered engineering of embedded software. To investigate whether the proposed solution is beneficial we conducted controlled experiments showing that the use of the dedicated review model can significantly increase the effectiveness and efficiency of manual reviews. Additionally, the use of the dedicated review model leads to significantly more confident decisions of the reviewers and is perceived by the reviewers as significantly more supportive compared with reviews without the dedicated review model.
Journal Article
Dual‐Scale Spiral Material for Balancing High Load Bearing and Sound Absorption
Porous materials with sound absorption and load‐bearing capabilities are in demand in engineering fields like aviation and rail transportation. However, achieving both properties simultaneously is challenging due to the trade‐off between interconnected pores for sound absorption and mechanical strength. Inspired by quilling art, a novel design using spiral material formed by rolling planar materials into helical structures is proposed. Experimental results show high structural strength through self‐locking mechanisms, while double porosities from interlayer spiral slits and aligned submillimeter pores provide excellent sound absorption. These spiral sheets surpass foam aluminum in specific strength (up to 5.1 MPa) and approach aerogels in sound absorption (average coefficient of 0.93 within 0–6400 Hz). With its adaptability to various planar materials, this spiral design allows for hybrid combinations of different materials for multi‐functionality, paving the way for designing advanced, lightweight porous materials for broad applications.
A dual‐scale spiral material is introduced to strike a balance between mechanical performance and sound absorption. The dual‐scale spiral materials exhibit good mechanical performance due to the confinement effect and interlayer self‐locking mechanisms across multiple layers of planar material. Additionally, the spiral slits and large specific surface area inherent to dual‐scale spiral material offer possibilities for achieving sound absorption. Abundant raw material sources and environmental sustainability make them promising for diverse applications in households, industries, and transportation.
Journal Article
Research on the Application of Interaction Design in the Functional Design of Intelligent-home Products
The networking operation of intelligent-home products can expand more functions and bring consumers more in-depth interactive experience. The effective integration of interaction design, intelligence and info tech in intelligent-home products can effectively solve the shortcomings and problems of home market products. Based on this, this paper first analyses the concept and value of product functional interaction design, then studies the functional design of intelligent-home products based on interaction design, and finally gives the utilization strategy of interactive design in the functional design of intelligent-home products.
Journal Article
Applying a Kano-FAST integration approach to design requirements for auditorium chairs
The design of auditorium chairs can directly reflect the image of public spaces. At present, the development of public furniture is relatively slow compared to household and office furniture. The design of auditorium chairs on the market is severely homogenized, relying on past experience and lacking scientific guidance. In order to create a better indoor public activity environment for users, from the perspective of user needs, first of all, 21 user needs for auditorium chairs were obtained through semi-structured interviews. Then, the Kano model was used to determine the attribute positioning of each demand. Finally, the FAST method was used to transform user demands into functions, assisting in the design optimization of hall chairs and promoting the future development of public furniture. The results indicate that the design of auditorium chairs must meet safety and stability, and the comfort and rechargeability of the seats are the most important needs of users. In the future, the functional design of auditorium chairs also needs to consider intelligent applications. The study applies a Kano-FAST integration method to the design innovation of auditorium chairs, providing data support for the development of furniture enterprise auditorium chairs and promoting product upgrading and optimization.
Journal Article
Applying a Kano-FAST Integration Approach to Design Requirements for Auditorium Chairs
The design of auditorium chairs can directly reflect the image of public spaces. At present, the development of public furniture is relatively slow compared to household and office furniture. The design of auditorium chairs on the market is severely homogenized, relying on past experience and lacking scientific guidance. In order to create a better indoor public activity environment for users, from the perspective of user needs, first of all, 21 user needs for auditorium chairs were obtained through semi-structured interviews. Then, the Kano model was used to determine the attribute positioning of each demand. Finally, the FAST method was used to transform user demands into functions, assisting in the design optimization of hall chairs and promoting the future development of public furniture. The results indicate that the design of auditorium chairs must meet safety and stability, and the comfort and rechargeability of the seats are the most important needs of users. In the future, the functional design of auditorium chairs also needs to consider intelligent applications. The study applies a Kano-FAST integration method to the design innovation of auditorium chairs, providing data support for the development of furniture enterprise auditorium chairs and promoting product upgrading and optimization.
Journal Article
The Evolution of Flexible Electronics: From Nature, Beyond Nature, and To Nature
The flourishing development of multifunctional flexible electronics cannot leave the beneficial role of nature, which provides continuous inspiration in their material, structural, and functional designs. During the evolution of flexible electronics, some originated from nature, some were even beyond nature, and others were implantable or biodegradable eventually to nature. Therefore, the relationship between flexible electronics and nature is undoubtedly vital since harmony between nature and technology evolution would promote the sustainable development. Herein, materials selection and functionality design for flexible electronics that are mostly inspired from nature are first introduced with certain functionality even beyond nature. Then, frontier advances on flexible electronics including the main individual components (i.e., energy (the power source) and the sensor (the electric load)) are presented from nature, beyond nature, and to nature with the aim of enlightening the harmonious relationship between the modern electronics technology and nature. Finally, critical issues in next‐generation flexible electronics are discussed to provide possible solutions and new insights in prospective exploration directions.
The flourishing development of multifunctional flexible electronics cannot leave the beneficial role of nature. Frontier advances on flexible electronics including the main individual components (i.e., energy (the power source) and the sensor (the electric load)) are presented from nature, beyond nature, and to nature. Critical issues are also discussed to provide possible solutions and new insights in prospective directions.
Journal Article
Mesoporous nanomaterial-assisted hydrogel double network composite for mixed-mode liquid chromatography
By introducing functional groups such as quaternary amine groups, sulfonic acid groups, triazine groups, and other mespore nanomaterials into the hydrogel, better separation effect of some organic framework materials has been obtained. Due to a reasonable design and preparation strategy, the hydrogel composite-modified silica can be used in the selective separation of various analytes such as pesticides, alkylbenzenes, polycyclic aromatic hydrocarbons, nucleosides/bases, benzoic acids, antibiotics, and carbohydrates. Through the exploration of chromatographic retention behavior, it is proved that the column can be used in mixed-mode liquid chromatography. The intra-day relative standard deviation for retention time of this new stationary phase is 0.12–0.16% (
n
= 10), and the inter-day relative standard deviation is less than 0.39% (
n
= 5). This new stationary phase can also be used for separation in complex samples. The limit of detection (LOD) for chlorotoluron in farm irrigation water is 0.21 µg/L and the linear range is 2–250 µg/L. After optimizing the chromatographic conditions, the highest efficiency of the hydrogel column in RPLC and HILIC modes has reached 32,400 plates/m (chlorobenzuron) and 41,300 plates/m (galactose). This new type of hydrogel composite is a porous network material with flexible functional design and simple preparation method and its application has been expanded in liquid chromatography separation successfully.
Graphical abstract
The hydrogel composed of triallyl cyanate cross-linking agent and 3-(2-(methacryloyloxy) ethyl) dimethylamine) propane-1-sulfonate (SBMA) monomer which were co-modified on the surface of mesoporous silica with MOF-919 for separation in mixed-mode liquid chromatography.
Journal Article
The complexity of trait–environment performance landscapes in a local subtropical forest
• That functional traits should affect individual performance and, in turn, determine fitness and population growth, is a foundational assumption of trait-based ecology. This assumption is, however, not supported by a strong empirical base.
• Here, we measured simultaneously two individual performance metrics (survival and growth), seven traits and 10 environmental properties for each of 3981 individuals of 205 species in a 50-ha stem-mapped subtropical forest. We then modelled survival/growth as a function of traits, environments and trait × environment interactions, and quantified their relative importance at both the species and individual levels.
• We found evidence of alternative functional designs and multiple performance peaks along environmental gradients, indicating the presence of complicated trait × environment interactions. However, such interactions were relatively unimportant in our site, which had relatively low environmental variations. Moreover, individual performance was not better predicted, and trait × environment interactions were not more likely detected, at the individual level than at the species level.
• Although the trait × environment interactions might be safely ignored in relatively homogeneous environments, we encourage future studies to test the interactive effects of traits and environments on individual performances and lifelong fitness at larger spatial scales or along experimentally manipulated environmental gradients.
Journal Article
PLA Double‐Spirals Offering Enhanced Spatial Extensibility
Inspired by natural spiral curves, this study aims to present a strategy to find a compromise between extensibility and load‐bearing capacity in structures made from polylactic acid (PLA) as a brittle material. Herein, four geometrically distinct double‐spiral modules are fabricated using a three‐dimensional (3D) printer and subjected to tension, in‐plane sliding, and out‐of‐plane sliding to assess both their in‐plane and out‐of‐plane mechanical performance. Subsequently, a modular spiral‐based metastructure is developed and tested under tension in two different directions. The results show that the maximum extension of the modules under different loading scenarios varies from 9 to 86 mm, while their load‐bearing capacity ranges between 18 and 78 N. These significant variations highlight the considerable influence of both geometry and loading conditions on the mechanical behavior of the double‐spiral modules. Moreover, the 250% horizontal and 130% vertical extensibility of the metastructure emphasize the importance of the spatial orientation of the modules in determining the efficiency of spiral‐based metastructures. This study suggests that double‐spirals with adjustable mechanical properties, if designed rationally, can offer a promising strategy to address the limited deformability of materials like PLA, and when arranged in specific spatial configurations, they can contribute to the development of energy‐dissipative metastructures with enhanced extensibility.
This study presents the design and mechanical evaluation of PLA double‐spiral modules, demonstrating enhanced spatial extensibility. Subjecting geometrically distinct modules to extension in different directions reveals their tunable mechanical properties, strong anisotropic behavior, and dramatic extensibility. The results highlight the potential of double‐spiral modules for the development of energy‐dissipative metastructures with multi‐directional flexibility.
Journal Article