Phone Case Research Articles

The Impact of Marketing Mix on Generation Z's Mobile Phone Case Purchasing Decisions in Chiang Mai, Thailand

Background and Aim: The proliferation of smartphones, particularly among Generation Z, has propelled the mobile phone case market into a period of remarkable growth. This research investigates the factors influencing the purchasing decisions of Generation Z students in Chiang Mai province, Thailand, regarding mobile phone cases. Materials and Methods: A quantitative research methodology was employed, utilizing a questionnaire administered to 385 Bachelor's degree students across various universities in Chiang Mai province. The data analysis encompassed descriptive statistics, correlation analysis, and multiple regression analysis to rigorously test hypotheses related to the impact of the marketing mix (product, price, place, and promotion) on purchasing decisions. Results: The research unequivocally establishes that all elements of the marketing mix significantly influence purchasing decisions among Generation Z students. Price is the most salient factor, followed by place, product, and promotion. Regression analysis confirms this influence (p < 0.05) with price (b = 0.251) exerting the strongest effect. The model accounts for 40.5% of the variance in purchasing decisions (R² = 0.405, Adjusted R² = 0.398, F = 64.561, p < 0.001), suggesting other factors also contribute to consumer behavior. These findings underscore the need for a comprehensive marketing strategy targeting Generation Z consumers, optimizing each element of the marketing mix. Conclusion: This study confirms the pivotal role of the marketing mix in shaping consumer behavior within the mobile phone case market. The results highlight the need for businesses to adopt a holistic marketing strategy that considers the relative importance of each element, with a particular emphasis on price and distribution channels. These insights can inform targeted marketing efforts and product development initiatives to effectively cater to the preferences of Generation Z consumers.

Material Compatibility in 4D Printing: Identifying the Optimal Combination for Programmable Multi-Material Structures.

This study identifies the optimal combination of active and passive thermoplastic materials for producing multi-material programmable 3D structures. These structures can undergo shape changes with varying radii of curvature over time when exposed to hot water. The research focuses on examining the thermal, thermomechanical, and mechanical properties of active (PLA) and passive (PRO-PLA, ABS, and TPU) materials. It also includes the experimental determination of the radius of curvature of the programmed 3D structures. The pairing of active PLA with passive PRO-PLA was found to be the most effective for creating complex programmable 3D structures capable of two-sided transformation. This efficacy is attributed to the adequate apparent shear strength, significant differences in thermomechanical shrinkage between the two materials, identical printing parameters for both materials, and the lowest bending storage modulus of PRO-PLA among the passive materials within the activation temperature range. Multi-material 3D printing has also proven to be a suitable method for producing programmable 3D structures for practical applications such as phone stands, phone cases, door hangers, etc. It facilitates the programming of the active material and ensures the dimensional stability of the passive components of programmable 3D structures during thermal activation.

Research on stamping formability and process simulation of AZ31 magnesium alloy based on deep learning

To study the formability of AZ31 magnesium alloy under different temperature conditions and improve the forming quality of its parts, this paper aims to solve the minimization problem of pursuing the “maximum thinning rate”. This study obtained the mechanical properties of AZ31 magnesium alloy at 25 °C, 150 °C, 250 °C, and 350 °C through uniaxial tensile tests and explored the stamping formability of AZ31 magnesium alloy mobile phone cases using the finite element inverse calculation method (MSTEP). Based on the hot stamping of AZ31 magnesium alloy at 250 °C, the Monte Carlo Simulation (MCS) method was used to randomly sample the blank holder force, stamping speed, friction coefficient, and resistance coefficient, and then simulate to obtain the corresponding “maximum thinning rate”. In addition, a hybrid prediction model optimized by Genetic Algorithm (GA) and Dung Beetle Optimization (DBO) based on the Back Propagation Neural Network (BPNN) - Random Forest (RF) was used to explore the nonlinear relationship between blank holder force, stamping speed, friction coefficient, resistance coefficient, and the “maximum thinning rate”. The results show that the plasticity of AZ31 magnesium alloy enhances with the temperature increase, especially exhibiting the best stamping formability at 250 °C. Feature importance indicates that the resistance coefficient and stamping speed have a greater impact on the maximum thinning rate, while the influence of blank holder force and friction coefficient is relatively smaller. Mean Square Error (MSE) shows that the predictive capability of the hybrid model is significantly superior to that of the single BP neural network and Random Forest model, displaying optimal efficiency. The predicted maximum thinning rate by the model is 15.39 %, with an error rate of only 0.32 % compared to the DYNAFORM finite element software simulation results, confirming the correctness, accuracy, and effectiveness of the prediction model. Overall, this study provides practical optimization strategies for metal stamping forming processes, with significant practical application value.

Reimagining Chinese Cultural Images: Historical and Contemporary Elements in Smartphone Case Design

This paper explores the historical evolution and contemporary representation of Chinese culture in mobile phone case design. The research aims to deepen our understanding of how traditional Chinese cultural elements are represented in mobile phone case design and how contemporary factors influence these designs. Through a historical review, the research revealed the major cultural elements and design trends of different periods, as well as the influence of historical background on mobile phone case design. The study also provides a detailed analysis of the representation of Chinese cultural elements such as dragons, phoenixes, and Chinese calligraphy in mobile phone case design, along with specific case studies. In the section on contemporary elements and influences, the study discuss the impact of contemporary Chinese social, political, economic, and technological factors on mobile phone case design, as well as how globalization and market demand shape the contemporary designs. The research focus on the ongoing importance of Chinese cultural imagery in mobile phone case design, which not only preserves traditional culture but also reflects the development and global influence of modern China. The significance of this study provide understanding on cultural representation and design trends in China’s mobile phone case design, and future research is recommended to further explore the potential of Chinese cultural elements in the particular product design.

Sustainable STEM Lesson 5: Testing the Cell Phone Cases

Sustainable STEM Lesson 5: Testing the Cell Phone Cases

Qiang Costumes in Maoxian, Sichuan Province: The Revival of Chinese Minority Identity for Application in Design

The purpose of this investigation was to fulfill three objectives: (1) to study the characteristics, connotations and reflected history and social development of Qiang costumes; (2) to study and analyze the cultural identity of Qiang Costumes for development into local products and (3) to design products inspired by Qiang Costumes in Maoxian County, Sichuan. The focus community was the Qiang people in Maoxian County, Sichuan Province, with the research population including local government workers, product sellers, design experts, and target consumers. Using a mixed-methods approach that combined qualitative and quantitative methodologies, the researchers gathered data through surveys, interviews, observations, and questionnaires. Results show that Qiang fabrics in Maoxian County are characterized by a number of local patterns, including fire, clouds, and flowers. These are incorporated into a rich and distinctive ethnic clothing identity. The researchers designed five everyday items based on the symbolism of Qiang clothing: a keychain, tableware, a bookmark, a fridge magnet, and a phone case. A questionnaire distributed to the target group found that the general level of consumer satisfaction with the products was at a very good level (x = 4.83). This investigation provides invaluable insights into the interplay between cultural preservation and economic development, highlighting the crucial role of integrating traditional Qiang culture into modern product design strategies.

Rapid biodegradation of microplastics generated from bio-based thermoplastic polyurethane

The accumulation of microplastics in various ecosystems has now been well documented and recent evidence suggests detrimental effects on various biological processes due to this pollution. Accumulation of microplastics in the natural environment is ultimately due to the chemical nature of widely used petroleum-based plastic polymers, which typically are inaccessible to biological processing. One way to mitigate this crisis is adoption of plastics that biodegrade if released into natural environments. In this work, we generated microplastic particles from a bio-based, biodegradable thermoplastic polyurethane (TPU-FC1) and demonstrated their rapid biodegradation via direct visualization and respirometry. Furthermore, we isolated multiple bacterial strains capable of using TPU-FC1 as a sole carbon source and characterized their depolymerization products. To visualize biodegradation of TPU materials as real-world products, we generated TPU-coated cotton fabric and an injection molded phone case and documented biodegradation by direct visualization and scanning electron microscopy (SEM), both of which indicated clear structural degradation of these materials and significant biofilm formation.

NFC-enabled potentiostat and nitrocellulose-based metal electrodes for electrochemical lateral flow assay

Rapid detection of pathogens at the point-of-need is crucial for preventing the spread of human, animal and plant diseases which can have devastating consequences both on the lives and livelihood of billions of people. Colorimetric, lateral flow assays consisting of a nitrocellulose membrane, are the preferred format today for low-cost on-site detection of pathogens. This assay format has, however, historically suffered from poor analytical performance and is not compatible with digital technologies. In this work, we report the development of a new class of digital diagnostics platform for precision point-of-need testing. This new versatile platform consists of two important innovations: i) A wireless and batteryless, microcontroller-based, low-cost Near Field Communication (NFC)-enabled potentiostat that brings high performance electroanalytical techniques (cyclic voltammetry, chronoamperometry, square wave voltammetry) to the field. The NFC-potentiostat can be operated with a mobile app by minimally trained users; ii) A new approach for producing nitrocellulose membranes with integrated electrodes that facilitate high performance electrochemical detection at the point-of-need. We produced an integrated system housed in a 3D-printed phone case and demonstrated its use for the detection of Maize Mosaic Virus (MMV), a plant pathogen, as a proof-of-concept application.

Metasurface-Based Phone Case for the SAR Reduction of the 5G Mobile Phones

Metasurface-Based Phone Case for the SAR Reduction of the 5G Mobile Phones

Production of a thermoplastic polyurethane/silver nanoparticles 3D filament with antiviral properties to combat SARS‐CoV‐2

AbstractAntiviral agents present a propitious alternative to prevent pathogen transmission on various surfaces. In the present study, we successfully synthesized nanocomposites of thermoplastic polyurethanes with silver nanoparticles (TPU/AgNPs) via extrusion. To comprehensively evaluate their potential in antiviral applications, we conducted a thorough analysis of the nanocomposites, encompassing investigations into their chemical structure, physicochemical and mechanical properties, cytotoxicity, antibacterial activity, and antiviral efficacy. Remarkably, the incorporation of AgNPs had no discernible impact on the chemical structure of the materials, ensuring the preservation of essential properties. Moreover, the nanoparticles exhibited remarkable stability within the TPU matrix, with no detectable leaching of AgNPs observed in any of the studied nanocomposites. The nanocomposites demonstrated exceptional antibacterial efficiency, effectively inhibiting bacterial growth while concurrently revealing no cytotoxic effects in vitro for BALB/3 T3 cells. The antiviral performance against SARS‐CoV‐2 proved highly potent, achieving inactivation yields surpassing 99.0%. Leveraging these advantageous attributes, we harnessed the potential of TPU/AgNPs nanocomposites to produce various versatile products, such as cell phone cases and 3D‐printing filaments. In conclusion, this study underscores the immense promise of antiviral TPU/AgNPs nanocomposites, offering new insights into the domains of materials science and infection control, contributing to a healthier and safer future.

PENGARUH CELEBRITY ENDORSMENT, VARIASI PRODUK, DAN KUALITAS PRODUK TERHADAP KEPUTUSAN PEMBELIAN CASE HANDPHONE DI INSTAGRAM ANYACOLECTION

The purpose of this research is to examine the effect of celebrity endorsements, product variety, and product quality on the decision to purchase a mobile phone case at anyacollection_. The population and sample used in this study were coustemers from the anyacolection_ online shop who had bought cell phone case products at anyacolection_. Data collection was carried out by distributing questionnaires with Likert scale measurements. Then, the data testing techniques used in this study were validity and reliability tests, R-Squer tests, and hypothesis testing through bootstrapping using Smart PLS 3.0 software. The results showed that celebrity endorsements and product quality had a positive and significant effect on purchasing decisions, while product variations had a negative effect on purchasing decisions. The better the promotion and the level of product quality, the more it will influence the decision to buy a cellphone case at the anyacollection_ online shop

Forensic Characterization of Mobile Phone Cases Using Infrared Spectroscopy with Deep Learning Methods

The fast and nondestructive identification of mobile phone cases is a crucial task for law enforcement personnel in the field of forensic science. Attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) has been employed in conjunction with feature extraction and deep learning algorithms to develop a method for distinguishing mobile phone cases. As preprocessing steps, multivariate scatter correction and standard normal variate were performed. Feature variables were extracted using the competitive adaptive reweighted sampling and shuffled frog leaping algorithm. Several supervised pattern recognition methods, namely ResNet50, VGG16, and multilayer perceptron (MLP), were utilized for constructing classifiers. The results indicated that the model’s performance based on multivariate scattering correction (MSC) with competitive adaptive re-weighted sampling (CARS) surpassed that of other approaches. Notably, the ResNet50 model exhibited superior discriminative ability compared to the VGG16 and MLP models, achieving 100% accuracy in the differentiation of all samples. This designed method represents a potentially rapid and nondestructive approach for identifying mobile phone cases in forensic science.

Application and Development of Traditional Elements in Rural Revitalization Design under New Media Perspective

Abstract This paper firstly studies the “three-step” strategy of rural revitalization at this stage and proposes to help consumers recommend suitable rural cultural and creative products through the FMIST model based on the dilemma of the development of cultural and creative products in rural revitalization. Then, it explores the role of traditional culture in the cultural and creative products of rural revitalization, as well as in the planning and architectural layout. Finally, the development status of rural cultural and creative products and architectural planning layout, as well as the association between cultural and creative products and architectural planning layout and influencing factors, are analyzed by entropy value method and grey correlation degree, respectively. The correlation between cultural and creative products and rural revitalization is all higher than 0.55, and the correlation between rural revitalization and cultural and creative products on rural revitalization is high. They can be injected with traditional elements and designed as portable cell phone cases and daily-use mugs, leaving behind traditional cultural elements that belong to the unique characteristics of the countryside.

Active matrix driven electrophoretic display with in-plane switching layout and driving waveform for reflective and transparent modes.

In-plane switching electrophoretic display (IPS-EPD) is an emerging field of display technology which achieves particles moving horizontally through a lateral electric field. Compared to vertically driven electrophoretic display (V-EPD), IPS-EPD exhibits the feasibility of transparent display function. However, most of the previous research was hindered by long response time, low optical transmittance, or complex structures. In this paper, we have proposed a newly developed electrode layout and driving waveform for IPS-EPD, achieving a device with fast response time of 0.32 s, high transmittance of 58.07%, good transmittance-contrast ratio of 11.25, and simple structure, which show a significant improvement over other related research. Additionally, we elucidated the physical mechanism for the device through developing a particles motion simulation. Finally, we presented a prototype of an IPS-EPD with TFT panel, which exhibits excellent performance in various application scenarios, making it a possible application prospect in mobile phone cases, glasses, windows, and so on.

Effect of the Carbon Source on the Characteristics of Silica-carbon as a Handphone’s Case Material

Activated carbon is believed to reduce radiation from cell-phone because it has large pores. This study aims to synthesize a silica-carbon composite as a mobile phone casing using activated carbon from bamboo, coconut shells, and coal combined with silicone rubber. The addition of activated carbon is carried out in the range of 10 - 30 g. Activated carbon mixed with silicone rubber and stirred for 3 minutes at 150 rpm. Based on Digital Electromagnetic Radiation, the highest addition of activated carbon (30g) provides a high radiation reduction but has a small tensile strength and a large elongation value. SEM images show that the distribution of activated carbon 10 - 15 g is more homogeneous on the mobile phone casing.

Effect of the Carbon Source on the Characteristics of Silica-carbon as a Handphone’s Case Material

Activated carbon is believed to reduce radiation from cell-phone because it has large pores. This study aims to synthesize a silica-carbon composite as a mobile phone casing using activated carbon from bamboo, coconut shells, and coal combined with silicone rubber. The addition of activated carbon is carried out in the range of 10 - 30 g. Activated carbon mixed with silicone rubber and stirred for 3 minutes at 150 rpm. Based on Digital Electromagnetic Radiation, the highest addition of activated carbon (30g) provides a high radiation reduction but has a small tensile strength and a large elongation value. SEM images show that the distribution of activated carbon 10 - 15 g is more homogeneous on the mobile phone casing.

BSafe-360: An All-in-One Naturalistic Cycling Data Collection Tool.

The popularity of bicycles as a mode of transportation has been steadily increasing. However, concerns about cyclist safety persist due to a need for comprehensive data. This data scarcity hinders accurate assessment of bicycle safety and identification of factors that contribute to the occurrence and severity of bicycle collisions in urban environments. This paper presents the development of the BSafe-360, a novel multi-sensor device designed as a data acquisition system (DAS) for collecting naturalistic cycling data, which provides a high granularity of cyclist behavior and interactions with other road users. For the hardware component, the BSafe-360 utilizes a Raspberry Pi microcomputer, a Global Positioning System (GPS) antenna and receiver, two ultrasonic sensors, an inertial measurement unit (IMU), and a real-time clock (RTC), which are all housed within a customized bicycle phone case. To handle the software aspect, BSafe-360 has two Python scripts that manage data processing and storage in both local and online databases. To demonstrate the capabilities of the device, we conducted a proof of concept experiment, collecting data for seven hours. In addition to utilizing the BSafe-360, we included data from CCTV and weather information in the data analysis step for verifying the occurrence of critical events, ensuring comprehensive coverage of all relevant information. The combination of sensors within a single device enables the collection of crucial data for bicycle safety studies, including bicycle trajectory, lateral passing distance (LPD), and cyclist behavior. Our findings show that the BSafe-360 is a promising tool for collecting naturalistic cycling data, facilitating a deeper understanding of bicycle safety and improving it. By effectively improving bicycle safety, numerous benefits can be realized, including the potential to reduce bicycle injuries and fatalities to zero in the near future.

Sustainability production in natural leather art: Evidence-based studio practices and techniques for leather phone cases

Sustainability production in natural leather art: Evidence-based studio practices and techniques for leather phone cases

An innovative integrated approach to automatic defect detection system of cell phone case manufacturing in an empirical implementation

An innovative integrated approach to automatic defect detection system of cell phone case manufacturing in an empirical implementation

Business Roundup

BUSINESS Business Roundup ShareShare onFacebookTwitterWechatLinked InRedditEmail C&EN, 2023, 101 (16), p 11May 22, 2023Cite this:C&EN 101, 16, 11AbstractTrinseo has started a pilot plant at its site in Terneuzen, the Netherlands, that will test a new recycling process that uses solvents to extract polycarbonate from other materials. The resulting resins can be used in automotive parts, cell phone cases, and printer enclosures. DSM-Firmenich , the recently merged company comprising specialty chemical firm DSM and flavor and fragrance maker Firmenich, will end its dual-CEO system inherited from DSM. Former DSM co-CEO Dimitri de Vreeze will continue to lead the new company, while Geraldine Matchett—former DSM co-CEO and current joint head of DSM-Firmenich—will depart Sept. 1. BASF is retooling facilities in Jiangsu and Guangdong, China, to add production of binders for battery anodes in response to growing demand for electric cars. The binders are based on modified styrene-butadiene rubber. Arkema plans to acquire Polytec PT, a company that produces adhesives that absorb heat produced when lithium-ion batteries are being usedView: PDF | Full Text HTML