User-Requirements Analysis on Augmented Reality-based Maintenance in Manufacturing

Maintenance of technical equipment in manufacturing is inevitable for sustained productivity with minimal downtimes. Elimination of unscheduled interruptions as well as real-time monitoring of equipment health can potentially benefit from adopting augmented reality (AR) technology. How best to employ this technology in maintenance demands a fundamental comprehension of user requirements for production planners. Despite augmented reality applications being developed to assist various manufacturing operations, no previous study has examined how these user requirements in maintenance have been fulfilled and the potential opportunities that exist for further development. Reviews on maintenance have been general on all industrial fields rather than focusing on a specific industry. In this regard, a systematic literature review was performed on previous studies on augmented reality applications in the maintenance of manufacturing entities from 2017 to 2021. Specifically, the review examines how user requirements have been addressed by these studies and identifies gaps for future research. The user requirements are drawn from the challenges encountered during AR-based maintenance in manufacturing following a similar approach to usability engineering methodologies. The needs are identified as ergonomics, communication, situational awareness, intelligence sources, feedback, safety, motivation, and performance assessment. Contributing factors to those needs are cross-tabulated with the requirements and their results presented as trends, prior to drawing insights and providing possible future suggestions for the made observations.

Design, Development, and Evaluation of 5G-Enabled Vehicular Services: The 5G-HEART Perspective

The ongoing transition towards 5G technology expedites the emergence of a variety of mobile applications that pertain to different vertical industries. Delivering on the key commitment of 5G, these diverse service streams, along with their distinct requirements, should be facilitated under the same unified network infrastructure. Consequently, in order to unleash the benefits brought by 5G technology, a holistic approach towards the requirement analysis and the design, development, and evaluation of multiple concurrent vertical services should be followed. In this paper, we focus on the Transport vertical industry, and we study four novel vehicular service categories, each one consisting of one or more related specific scenarios, within the framework of the “5G Health, Aquaculture and Transport (5G-HEART)” 5G PPP ICT-19 (Phase 3) project. In contrast to the majority of the literature, we provide a holistic overview of the overall life-cycle management required for the realization of the examined vehicular use cases. This comprises the definition and analysis of the network Key Performance Indicators (KPIs) resulting from high-level user requirements and their interpretation in terms of the underlying network infrastructure tasked with meeting their conflicting or converging needs. Our approach is complemented by the experimental investigation of the real unified 5G pilot’s characteristics that enable the delivery of the considered vehicular services and the initial trialling results that verify the effectiveness and feasibility of the presented theoretical analysis.

User Centered Design Method for Developing a Mobile-Based Product Distribution Application

Anyelir Cake And Bakery is the largest cake shop in Purwakarta which is engaged in the production of various kinds of cakes. In the process of distributing products from the central store to branch stores, they still use WhatsApp to place orders. This causes frequent discrepancies in the number of products requested and the number of products received due to an error in reading the message. In this study, a mobile-based application will be built that is able to manage order data more accurately. The development of this application uses the User Centered Design (UCD). This is a design method that focuses on user needs so that the final result of this application does not need to change user behavior when using the application. The UCD method consists of four stages, namely plan the human centered design, specify user and organizational requirements, product design solutions, and evaluate design against user requirements. In the development process, application testing was carried out to get feedback from users with good scores, namely an average of 4 (agree) and 5 (strongly agree). This shows that the application is in accordance with the needs of the user.

Logistics support planning model in the conditions of limited resources

Introduction/purpose: The paper presents a model of logistics support planning in the conditions of limited logistic resources based on the prioritization of customer requirements and resource allocation. Decisionmakers play a crucial role in the efficient and equitable allocation of resources as they prioritize among different user requirements. Methods: Requirement prioritization techniques that use nominal scale, ordinal scale, and ratio scale, and five methods for converting ranks into weighting coefficients have been applied to determine the degree of significance of user requirements. The Requirements triage method has been used for establishing relative priorities, while the heuristic algorithm determining the Kemeny median was used to consolidate individually ranked requests into a group rank. In order to balance opposing demands of users, consensus measures of group decision making were used. For obtaining an optimal planned solution of logistic support, the methods and techniques of resource allocation were applied. Results: A model for adaptive planning of logistics support in the conditions of limited resource capacities of the logistics system has been developed. Conclusion: The proposed model can be effectively applied in other areas of resource allocation.

The cost-sensitive approximation of neighborhood rough sets and granular layer selection

Neighborhood rough sets (NRS) are the extended model of the classical rough sets. The NRS describe the target concept by upper and lower neighborhood approximation boundaries. However, the method of approximately describing the uncertain target concept with existed neighborhood information granules is not given. To solve this problem, the cost-sensitive approximation model of the NRS is proposed in this paper, and its related properties are analyzed. To obtain the optimal approximation granular layer, the cost-sensitive progressive mechanism is proposed by considering user requirements. The case study shows that the reasonable granular layer and its approximation can be obtained under certain constraints, which is suitable for cost-sensitive application scenarios. The experimental results show that the advantage of the proposed approximation model, moreover, the decision cost of the NRS approximation model will monotonically decrease with granularity being finer.

User Expectation of Public Transport Design Experience for Electric Bike Sharing in Indonesia

Recently, Indonesia has been rapidly developing public transport infrastructure. However, many people still prefer using a private vehicle for their daily mobility. This study explored the design direction of an electric bike sharing system (EBS) for the first mile/last mile (FMLM) as part of an integrated public transport system to attract more people to public transportation. A focus group interview (FGI) was performed with ten Indonesian students currently studying at Daegu City, South Korea. All of them had experience using public transportation in both Indonesia and South Korea. From the FGI, the data on user needs related to FMLM was analyzed to understand the gap between expectations and reality as well as to enhance the feasibility of the design and development of EBS. In the next stage, based on the various needs and expectations of the participants about ideal public transportation in Indonesia, design strategies and elements were achieved and optimized specifically for EBS. Furthermore, we propose two usability scenarios in order to meet the user requirements. This study will be proposed to traffic policymakers for use in developing a design strategy and direction for an eco-friendly EBS formulation.

PENERAPAN METODE USER-CENTER DESIGN (UCD) UNTUK E-COMMERCE INDUSTRI KREATIF

Banyak sistem e-commerce dibangun yang ada berfokus pada bisnis, dengan fitur beragam namun tanpa melibatkan pengguna, sehingga belum tentu akan sesuai dengan kebutuhan pengguna baik dari segi antar muka, usability, dan fitur yang ada, informasi yang disajikan, dan beberapa alur proses yang digunakan, karena faktor-faktor tersebut sehingga membuat user dapat juga merasakan kesulitan atau furtasi dalam menggunakan aplikasi tersebut, sehingga menjadi penyebab menurunnya produktifitas pengguna. Sehingga solusinya adalah dengan membuat aplikasi e-commerce yang mudah digunakan sesuai dengan kebutuhan pengguna dengan metode User-Center Design (UCD) diimplementasikan pada UKM Komoditas pangan lokal Madura diharapkan dapat memberikan dampak positif dalam mempermudah proses jual beli serta dapat meningkatkan persaingan bisnis untuk memasarkan berbagai macam produk atau jasa. Penerapan metode UCD menggunakan empat proses Specify the context of use, Specify User and Organizational Requirements, Produce Design Solutions dan Evaluate designs against user requirements. Untuk pengujiannya dilakukan menggunakan Functionality dengan metode black box, untuk usability menggunakan USE Queissionaire skala Likert 1 s.d 7 dengan 30 pertayaan, pengujian dilakukan dengan melibatkan pengguna sebanyak 10 orang terdiri 5 pelaku usaha dan 5 calon konsumen, hasil pengujian Functionality menunjukan hasil bagus karena sistem bekerja sesuai dengan fungsinya tanpa ada kendala, sedangkan pengujian usability USE Queissionaire pada front end mendapat nilai Usefulness 6.075, Ease of Use 6.236, Ease of Learning 6.30, dan Satisfaction 6.485, sedangkan pengujian pada back end untuk Usefulness 6.475, Ease of Use 6.563, Ease of Learning 6.60, dan Satisfaction 6.542, sehingga sistem secara umum baik karena masih berada pada nilai rata-rata 6 ke atas.

Designing a Reliable UAV Architecture Operating in a Real Environment

The article presents a method of designing a selected unmanned aerial platform flight scenario based on the principles of designing a reliable (Unmanned Aerial Vehicle) UAV architecture operating in an environment in which other platforms operate. The models and results presented relate to the medium-range aerial platform, subject to certification under the principles set out in aviation regulations. These platforms are subject to the certification process requirements, but their restrictions are not as restrictive as in the case of manned platforms. Issues related to modeling scenarios implemented by the platform in flight are discussed. The article describes the importance of Functional Hazard Analysis (FHA) and Fault Trees Analysis (FTA) of elements included in the hardware and software architecture of the system. The models in Unified Modeling Language (UML) used by the authors in the project are described, supporting the design of a reliable architecture of flying platforms. Examples of the transformations from user requirements modeled in the form of Use Cases to platform operation models based on State Machines and then to the final UAV operation algorithms are shown. Principles of designing system test plans and designing individual test cases to verify the system’s operation in emergencies in flight are discussed. Methods of integrating flight simulators with elements of the air platform in the form of Software-in-the-Loop (SIL) models based on selected algorithms for avoiding dangerous situations have been described. The presented results are based on a practical example of an algorithm for detecting an air collision situation of two platforms.

Blockchain Technology for Projects: A Multicriteria Decision Matrix

This research aims to develop a multicriteria decision matrix (MCDM) for project management practitioners, which will support blockchain type selection, evaluate blockchain platforms, and plan blockchain systems. The MCDM is substantiated through a case study, which includes a questionnaire and an illustrative example pertinent to the construction industry. It was discovered in this study that consortium blockchain is superior in dealing with the characteristics of projects, and Hyperledger Fabric is chosen as the best applicable platform. In planning a blockchain-based project management system, project management practitioners should consider user requirements such as network participants, principal transactions, communication channels, and smart contracts.

Evaluation of Adaptive Interaction Systems for Virtual Museum Development

Virtual Museum (VM) is an application of Virtual Reality (VR) technology generating realistic visualization and sensation to convince museum visitors to interact with digital content. There are many immersive VR devices that support interactive VM applications. We investigate appropriate devices for interaction within VM. We proposed a Storytelling platform to achieve device organization without modification, the story and interaction were self-adapted to the selected device. Three types of interactive content were designed on our Storytelling platform to be applied on different interaction systems: a 2D standard display, a 3D stereoscopic display and a full immersive CAVE. The results showed different performances of each system supporting VM developers to select an appropriate interaction system. The evaluation contributes to the design of content and interaction of VM development with more efficiency based on user requirements. HIGHLIGHTS Three types of interactive content were designed on our Storytelling platform to be applied on different interaction systems: A 2D standard display, a 3D stereoscopic display, and a full immersive CAVE The 2D Powerwall system with a wide range of views provides immersion. However, with two-dimensional displays, users lack depth perception Users spent more time in selection and manipulation in the 3D stereoscopic system because depth perception is added The CAVE system has user attraction or holding power, users spent more interacting time GRAPHICAL ABSTRACT