Advanced Mobile Research Articles

Influence of Lithium Ion Kinetics, Particle Morphology and Voids on the Electrochemical Performance of Composite Cathodes for All-Solid-State Batteries

With the ongoing transformation to e-mobility, lithium all-solid-state batteries are promising candidates for advanced mobile energy storage. Other than in conventional lithium ion cells, the rigid solid electrolyte entails its own morphology and does not wet residual voids in composite electrodes, which can limit the cell performance. We therefore take a closer look at the influence of microstructural characteristics on different scales in composite cathodes by means of electrochemical simulation using the finite element method. Cathode active material particle arrangements are constructed to validate the model against experimental data. We highlight the significance of the active material particle size distribution and state-of-charge dependent input parameters, such as the lithium diffusion coefficient in NCM811 and the exchange current density at the interface of NCM811 and Li6PS5Cl. We zoom in on that interface under the presence of void space that can result from manufacturing or arise from inter-particle contact loss upon volume changes. In a 1-particle-void model, the impact of the active surface area covered by voids is studied as well as the influence of the void distribution and the void size on the electrochemical performance. Beyond that, we simulate a tortuosity-optimized structured electrode and provide first guidelines for laser-patterned all-solid-state cathodes.

Imaging lidar prototype with homography and deep learning ranging methods

We report on developing a non-scanning laser-based imaging lidar system based on a diffractive optical element with potential applications in advanced driver assistance systems, autonomous vehicles, drone navigation, and mobile devices. Our proposed lidar utilizes image processing, homography, and deep learning. Our emphasis in the design approach is on the compactness and cost of the final system for it to be deployable both as standalone and complementary to existing lidar sensors, enabling fusion sensing in the applications. This work describes the basic elements of the proposed lidar system and presents two potential ranging mechanisms, along with their experimental results demonstrating the real-time performance of our first prototype.

An energy harvesting, blockchain, and QoS-aware intelligent healthcare task coordination policy for IoT-assisted networks

With the rise of advanced communication technology, mobile devices, cloud computing, and internet of things (IoT) technology, a significant amount of IoT-assisted healthcare applications have been emerged to improve the human's life quality. Most of the existing works in IoT-assisted healthcare application execution do not consider the energy harvesting, computation task allocation, trust access authentication of users, and quality of service (QoS) requirements satisfaction at the same time by investigating different healthcare users, requirements, energy cost, available cloud, and network resources. To deal with these issues, this paper proposes an intelligent energy harvesting, decentralised blockchain-based authentication, and QoS-aware healthcare task coordination scheme for IoT-assisted healthcare applications by taking into account different users, QoS requirements, resources availability, and resource cost. Simulation results on transaction delay, energy consumption, resource cost, throughput, and system reward are presented to show the significance of the proposed scheme over the conventional schemes.

A Study on Mobile Networks and Their Generations

The main purpose of this paper is to provide detailed and comprehensive research on the emergence of various cell phone manufacturing technologies in wireless communication. In this paper we focus on studying mobile generations from 1G to 5G and future mobile phones. The first generation has fulfilled the basic needs of the voice, and the second generation has delivered a high volume and a large amount of integration. The third generation included high-speed data transfer which gave its users a ‘mobile broadband experience’. The fourth generation will provide access to a variety of telecommunications services, including advanced mobile services, supported by mobile networks and fixed networks. We have compared all the mobile phones that have been created so far based on their technology.

Relationship between Age, Gender, Mobile Phone Usage and some Cognitive Functions among the Nigerian Students

Introduction: Advanced mobile technology especially mobile phones provide useful and convenient means for individuals to communicate and access the internet anytime and anywhere. However, electromagnetic field (EMF) energy from the mobile phones has been mentioned to hamper neuronal activity and cognitive function in humans.
 Aim: This research was therefore undertaken to determine the relationship between age, gender, mobile phone usage and some cognitive functions among the Nigerian students.
 Methodology: This study used datafrom500 students randomly selected from populations in University of Port-Harcourt. Different ages specified by the respondents through structural.
 Questionnaires were used. Data obtained from the retrieved questionnaire were analyzed using multiple STATGRAPHICS for the descriptive statistics. While SPSS (IBM Amos V21.0.0, USA) was used for the inferential statistics.
 Results: The results revealed that, there was no significant association between age and smartphone ownership (P>0.05). However, for gender, there were significant distributional differences in males (38.5%) and females (29.4%) (P=0.022), as well as stress caused by phone usage (males=76.8%; females=89.7). Correlations of cognitive function variables revealed significant relationship between all the cognitive functional variables.
 Conclusion: Distraction was found to have a significant relationship with stress (P=0.033). Therefore attachment to use of smart phone among youths should be advisably minimized.

Research Onion for Smart IoT-Enabled Mobile Applications

Determining the appropriate approaches and procedures to gain sufficient results is a vital issue that is faced by the majority of researchers. Each type of research can have several methodologies that can be applied. Yet, one approach might lead to concluding more effective outcomes. Thus, designing the research and applying appropriate methods and techniques are the key aim of this experiment. Combining the research onion framework with an advanced Internet of Things- (IoT-) enabled mobile app solution within the real world is the foundation of this research. The framework has six main layers, starting with philosophy and ending with techniques and procedures. This research begins by providing a brief introduction in regard to the selected framework. Then, it provides a comprehensive explanation regarding each of the framework layers and justifying the chosen element within each layer combining with the advanced IoT-enabled mobile app for this research study. Later, it highlights the challenges that can be faced while using such a framework.

Multi-objective optimization design of B-pillar and rocker sub-systems of battery electric vehicle

B-pillar and rocker are the key force transmission sub-systems of the side impact of battery electric vehicle (BEV), and scholars have studied the side crashworthiness of these sub-systems and vehicle body a lot. However, these works are insufficient on the analysis of benchmarking vehicle models, the simulation and experiment of the B-pillar and rocker sub-systems, and the optimization of these sub-systems. To make up these shortcomings, this work aims to design the B-pillar and the rocker and improve the side crashworthiness of BEV. It presents a systematic method on the side crashworthiness of BEV. The dynamic bending performance of the B-pillar and the rocker are studied in simulation analyses and experiments. The materials, structures, and crashworthiness of these two sub-systems of eleven benchmark models are studied. Minimizing structural mass and cost as well as maximizing mean crushing force are performed based on multi-objective artificial tree algorithm to optimize the B-pillar and the rocker. The optimized sub-systems are applied to the body of a BEV. As a result, the performance of the B-pillar and the rocker is significantly improved, and their optimal solution templates are provided. The performance of the BEV is also improved under the advanced European mobile deformable barrier side impact and the oblique pole side impact. Some interesting conclusions for BEV are presented. In summary, this work has obvious reference value for automotive engineers and scholars to further study the crashworthiness and lightweight of BEV.

You have safety instrumented system bypassed right now and don't know it

AbstractSafety instrumented systems (SIS), also known as emergency shutdowns, interlocks, and trips, are very common and critical safeguards protecting process plants. In order to maintain and test these systems, they are usually implemented with well‐engineered and controlled bypasses, typically including alarm logging, bypass authorization, and auditing. Even so, there are myriad ways to place an SIS component into bypass, sometimes without even realizing it. Many of these methods occur in the field, away from the watchful eye of the board operator. In many cases, the bypasses occur inadvertently during maintenance or operational activities and are left in place, unmanaged. Common culprits include solenoid valve latches, shutoff valve handwheels, and hand‐off‐auto switches on pump and compressors. This paper will explain how some equipment can be inadvertently put into bypass and methods for documenting and verifying that they are not in bypass using advanced mobile computing assisted car‐seal management.

The Effect of Marketing Mix Perception on the Intention of Online Merchant Financing

With a large number of Micro, Small, and Medium Enterprises (MSMEs), Indonesia has an opportunity to pioneer the development of new digital services, especially advanced mobile financial service and e-commerce. Therefore, the government recommended e-marketplaces as a channel to provide micro-financing MSME registered as an online merchant. Financial Institutions are more secure in offering credit facilities to merchants in e-marketplaces because it is easier to verify borrower status and transaction records. This paper aimed to examine the role of the marketing mix (product, price, place, and promotion) perceived in submitting microcredit’s online application. Research on the intention of online merchants in e-marketplaces used the modified Decomposed Theory of Planned Behavior (DTPB) model approach. Data were collected from Indonesian online seller associations using a convenience sampling approach, and the research hypotheses were tested by applying structural equation modeling. The results showed that besides having a significant effect on online financing intention, the marketing mix’s perception could also be developed by mediating subjective norms.

Development and Reliability Study of 3-D Wafer Level Packaging for SAW Filter Using Thin Film Capping

The rapid growth of the advanced consumer 5G wireless mobile phones has propelled the demands of fabricating surface acoustic wave (SAW) filters with smaller size and high performance. Three-dimension wafer-level package (3-D WLP) for SAW filter is a promising solution to replace conventional surface mounted technology and chip-scale packaging. In this article, a new WLP for SAW filter with a size of 1.3 mm ×1.1 mm ×0.35 mm is developed using thin dry film capping. The new 3-D WLP significantly reduces the overall thickness which is particularly meaningful for low-profile smartphones and tablets. A number of key processes were developed. To improve the quality, finite element modeling (FEM) is used to simulate the mechanical stress to optimize cavity structure. Reliability tests were performed and the results indicated that there were no significant frequency response changes occurred and low insertion loss (IL) in pass band was less than 0.2 dB after pro-conditional level 3 test, unbiased highly accelerated stress (uHAST) test, and temperature cycling (TC) test on SAW filter packages. It can be concluded that 3-D WLP for SAW filter achieves miniaturization, good electrical performance, and reliability.

Review Paper Connect Studiez Insight Android Application on College Management System

In today's age of advanced mobile technology, this has become our daily routine to prefer applications to websites while working. In comparison to a website, applications are easier to use. As a result, our project proposes a software called "Connect Studiez Insight" which will provide students and staff with exposure to all of our college's insights. Students and staff will benefit from this application since many administrative and academic tasks will be efficiently managed. This app will be a copy of our branch. Students can use this application to acquire information on University Results, Exam Time Tables, and various activities that will be held in college by simply clicking on the appropriate tab. Students will be able to maintain a copy of all key documents they submit to the college. The feedback system is the most essential aspect of this application since it allows students to provide feedback and raise concerns under several topics. While the system is designed in such a way that the student's name remains anonymous, implementation will be a time-consuming process. This application's distinguishing feature will be its focus on student-centered learning. It is the "Mera Sujhaav" a suggestion page, where students can submit recommendations for events, seminars, and other activities that they would like to participate in. As a result, we're concentrating on developing a project that provides the most efficient, dependable, and flexible solution for the Institute's day-to-day operations.

Lost in mobile? Exploring the mobile internet digital divide among Chinese college students

Mobile has become the primary mode of Internet access for many people. Existing studies have generally indicated that mobile Internet represents an inferior substitute for traditional PC-based Internet. In particularly, mobile-only users are often found to be the most disadvantaged. This paper explores the usage characteristics of multimodal users by differentiating mobile-reliant users, who primarily rely on mobile phones to access the Internet, and non-mobile-reliant users, who primarily use PCs to access the Internet, and investigates the socioeconomic characteristics of mobile-reliant users, the association of the access preference and usage patterns, and whether a new type of digital divide has emerged. Based on data collected in a major public research university in southwest China, this study demonstrates that mobile-reliant users are not disadvantaged compared to non-mobile-reliant users in terms of usage, with the development of advanced mobile technology and the wealth of mobile-friendly content available therein. Practical implications for higher educators are also discussed.

Identifying Tertiary Students’ Perception of Usabilities of Rain Classroom

Rain Classroom, as a mobile app designed and developed by Tsinghua University, has been catching increasingly intense attention since her birth in 2016. Her usability has, however, seldom been explored. The purpose of this study is to compare the usability of Rain Classroom assisted learning with other learning approaches. A mixed design was adopted to collect both quantitative and qualitative data. Via pre- and post-questionnaires, we collected quantitative data. Through analyzing the data, we concluded that the usability of Rain Classroom was significantly higher than that of the traditional learning in terms of eight attributes: effectiveness, efficiency, satisfaction, learnability, memorability, errors, cognitive load and timeliness. Via the semi-structured interviews, we collected qualitative data, based on which the findings are generally consistent with those from questionnaires. Future research may focus on development of more advanced mobile apps, between which the usability comparison may be conducted assisted with interdisciplinary cooperation such as statistics, education, psychology and computer technology.

Mobile Shopping Adoption: Research Insights

Mobile shopping is the new attraction among the customers and retailers. High tech life, smart connectivity, advanced mobile phones and busy lifestyles have paved the way of mobile shopping adoption. Mobile commerce is progression of e-commerce and mobile shopping is considered as a subset of m-commerce. Mobile shopping has created opportunity for retailers as well customers and has developed new means of marketing. In a past few decades’ mobile commerce industry has seen tremendous growth and mobile shopping is most desired applications of m-commerce. Though there is huge potential of mobile shopping but yet a long way is to be travelled in the emerging economies. Mobile shopping is at infancy stage in many developing nations and hence researchers can contribute more towards the literature of mobile shopping. This paper is an attempt to throw some light on mobile shopping adoption studies.

Increasing the role of the NovSU zoological museum in environmental education of the population

Zoological Museum of the Institute of Agriculture and Natural Resources in Novgorod State University is a structure of high potential for development due to a rich collection of representatives of the animal world of Novgorod region, and traditions of participation in research on an all-Russian scale. This potential is not fully realized due to both changes in departmental affiliation and difficulties associated with replenishing the collections performed by conventional methods. The paper proposes a development concept based on modern concepts of museum destination in terms of participation culture. Formation of an advanced mobile and polyphonic exhibition space will promote its attractiveness and increase the information content of the museum. Digital technologies, including augmented and virtual reality technologies, will be used to replenish collections. A live collection of fish from local waters will enhance the research and social capabilities of the museum as a place for communication of like-minded people. Information support in the media, in social networks and on the museum website is a reserve for attracting and highlighting active users. However, the main approach implies competent methodological and active promotion of the complex of educational services in accordance with the consumer requirements. Scaling the project activities of university students allows its use as a source for concept implementation.

The Landscape of Connected Cancer Symptom Management in Rural America: A Narrative Review of Opportunities for Launching Connected Health Interventions.

BackgroundThe 2016 President’s Cancer Panel called for projects focusing on improving cancer symptom management using connected health technologies (broadband and telecommunications). However, rural communities, like those in Appalachia, may experience a “double burden” of high cancer rates and lower rates of broadband access and adoption necessary for connected health solutions.PurposeTo better understand the current landscape of connected health in the management of cancer symptoms in rural America.MethodsA literature search was conducted using four academic databases (PubMed, CINAHL, MEDLINE, and PsycINFO) to locate articles published from 2010 to 2019 relevant to connected cancer symptom management in rural America. Text screening was conducted to identify relevant publications.ResultsAmong 17 reviewed studies, four were conducted using a randomized controlled trial; the remainder were formative in design or small pilot projects. Five studies engaged stakeholders from rural communities in designing solutions. Most commonly studied symptoms were psychological/emotional symptoms, followed by physical symptoms, particularly pain. Technologies used were primarily telephone-based; few were Internet-enabled video conferencing or web-based. Advanced mobile and Internet-based approaches were generally in the development phase. Overall, both rural patients and healthcare providers reported high acceptance, usage, and satisfaction of connected health technologies. Ten of the 17 studies reported improved symptom management outcomes. Methodological challenges that limited the interpretation of the findings were summarized.ImplicationsThe review identified a need to engage rural stakeholders to develop and test connected cancer symptom management solutions that are based on advanced mobile and broadband Internet technologies.

Structural Equation Modeling for Mobile Learning Acceptance by University Students: An Empirical Study

Advanced mobile devices and global internet services have enhanced the usage of smartphones in the education sector and their potential for fulfilling teaching and learning objectives. The current study is an attempt to assess the factors affecting mobile learning acceptance by Saudi university students. A theoretical model of mobile learning acceptance was developed based on the technology acceptance model (TAM) and the unified theory of acceptance and use of technology (UTAUT) model. Theoretically, five independent constructs were identified as most contributory towards the use of mobile learning and tested empirically. Data were collected through an online survey and analyzed using SmartPLS. The results of the study indicate that four constructs were significantly associated with mobile learning acceptance: perceived usefulness (β = 0.085, t = 2.201, and p = 0.028), perceived ease of use (β = 0.031, t = 1.688, and p = 0.013), attitude (β = 0.100, t = 3.771, and p = 0.037), and facilitating conditions (β = 0.765, t = 4.319, and p = 0.001). On the other hand, social influence was insignificant (β = −0.061, t = 0.136, and p = 0.256) for mobile learning acceptance. The contribution of social influence towards the use of mobile learning was negative and insignificant; hence, it was neglected. Thus, finally, four constructs (perceived usefulness, perceived ease of use, attitude, and facilitating conditions) were considered as important determinants of mobile learning acceptance by university students.

Food Depth Estimation Using Low-Cost Mobile-Based System for Real-Time Dietary Assessment

Real time estimation of nutrition intake from regular food items using mobile-based applications could be a breakthrough in creating public awareness of threats in overeating or faulty food choices. The bottleneck in implementing such systems is to effectively estimate the depths of the food items which is essential to calculate the volumes of foods. Volumes and density of food items can be used to estimate the weights of food eaten and their corresponding nutrition contents. Without specific depth sensors, it is very difficult to estimate the depth of any object from a single camera. Such sensors are equipped only in very advanced and expensive mobile devices. This work investigates the possibilities of using regular cameras to calculate the same using a specific frame structure. We proposed a controlled camera setup to acquire overlapping images of the food from different positions already calibrated to estimate the depths. The results were compared with the Kinect device’s depth measures to show the efficiency of the proposed method. We further investigated the optimum number of camera positions, their corresponding angles, and distances from the object to propose the best configuration for such a controlled system of image acquisition with regular mobile cameras. Overall the proposed method presents a low-cost solution to the depth estimation problem and opens up the possibilities for mobile-based apps for dietary assessment for various health-related problem-solving.
 GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 6(1), Dec 2019 P 1-11

NOVN: A named-object based virtual network architecture to support advanced mobile edge computing services

Achieving advanced Mobile Edge Computing (MEC) services such as dynamic resource assignment and slicing, maintaining Quality of Service (QoS), and enabling heterogeneous virtual functions are some of the technical challenges associated with edge-cloud enhanced 5G architectures now under consideration. This paper proposes a named-object based virtual network (NOVN) architecture to support low-latency applications in the MEC. Software router implementation running on the ORBIT testbed validates the named-object approach, showing low VN processing and control overhead, and making it possible to achieve low latency. A latency performance improvement of 30% is achieved as compared to the baseline implementation without NOVN. The results also validate feasibility of using the advanced MEC services for an example latency constrained edge cloud scenario.

Fraud Risk in Digitized Fintech Ecosystem: Troubling Trends, Issues and Approaches to Mitigate Risk

Global Digitization is taking place at a scorching pace across all sectors given continuous innovation in advanced Internet & Mobile technology, IoT devices. While there are clear benefits that have already accrued due to digitization, the new normal has brought us new challenges too, especially the issue of Data Theft, Fraud & Cyberattack Risk. In this paper, we examine the emerging trends in the above risks and how regulators are responding to the challenge of containing these risks at a systemic and entity level. We also examine the role of end individual consumers. Finally, we discuss the building blocks to implement a robust Fraud Risk Management framework at the entity level with specific emphasis on Payment Aggregating entities.