Device Technology Research Articles

Family entrepreneurship: a bibliometric analysis and future research agenda

The family entrepreneurship regroups family members, family business and the entrepreneurship activities. This makes it a fertile and rich research field, which needs to be explored and analyzed to understand the specific behaviors and orientations of the family entrepreneurial initiatives. The main purpose of this paper is to present a bibliometric analysis and research agenda of scientific publications dealing mainly with the family entrepreneurship field. The bibliometric process is the methodological design adopted to review the previous studies about our problematic. The scope of our study is limited to the scientific articles have been published between 2000 and 2022 (September), in the three data bases: Web of sciences, Scopus and Jstor. 73 out of 181 articles selected have been retained and analyzed after the assessment process taking into consideration different inclusion and exclusion criteria. In addition, the Excel’s tools and the VOSviewer software version 1.6.18 are the main technological devices used to carry out this research. Our study shows that family entrepreneurship is a legitimate area of research, despite the fact that it is still in its pre-paradigmatic and launching stages. Thus, further academic studies dealing with the family entrepreneurship research clusters generated through the thematic and bibliometric analysis (as presented by the figure 5) need to be deepened

Device packaging and integration optimization based on neural network method: Effect of microchannel structure on heat sink performance

With the continuous improvement of power density of electronic device packaging, microchannel structure based on advanced packaging integration technology has become one of the hot topics in thermal management research. In this paper, two heat sink models are numerically simulated: rectangular microchannel and microchannel-pinfin hybrid. The effects of microchannel structure, inlet/outlet arrangement and pinfin design on heat sink performance were studied. The heat sink performance is evaluated by the maximum temperature at hotspot area, the total thermal resistance and the mean absolute temperature deviation (MATD). The research results show that at the same Reynolds number, the hybrid structure with pinfin has better heat sink performance. Compared with the rectangular microchannel structure, the maximum temperature at the hotspot area is reduced by 20.45 K and the total thermal resistance is reduced by 5.9 %. Compared with the three inlet/outlet arrangements of I-type, U-type and Z-type, the I-type hybrid structure has the best heat sink performance. The average absolute temperature deviation is about 10 K at high Reynolds number, and the temperature distribution is more uniform. In addition, the heat sink performance is improved by increasing the pinfin size to expand the heat transfer area. This paper uses simulation results to build an artificial neural network model in order to quickly and accurately predict numerical results under different parameter conditions. The network model has good accuracy and robustness, with a mean absolute error of 0.376 %. The prediction model takes heat source power, Reynolds number and pinfin structural parameters as input. Rapidly predicting the performance of heat sinks with different structural parameters under different boundary conditions will effectively save experimental and computational costs. This research provides new ideas and tools for optimizing heat sink design, and helps improve the application of microchannel cooling technology in electronic devices.

Brief considerations on ethics for artificial intelligence neurotechnologies

Introduction: implants and technological devices are being used to decode neural activity to move a prosthetic arm, control an avatar, and turn thoughts into text through an AI-based decoder. These situations are designed by Brain-computer Interface (BCI), one of the main AI-based neurotechnologies used to understand the brain and to improve people's welfare. In 2023, UNESCO already recognized its benefits but also revealed the potential ethical issues and problems, particularly with its use of non-invasive interventions. Objective: so, this essay aims to answer the following research question: which Ethical standards can be designed and used to balance the person’s rights with technological development to prevent vulnerability situations? Method: the methods used in this work is the bibliographic research plus the hermeneutic interpretation. Results: it proposes Ethical standards for protecting the rights of the vulnerable to ensure that these rights are respected. Conclusions: there is no need for the creation of a new neurorights. Privacy and intimacy can and will deal with all the issues of neurotechnologies. However, it is necessary to improve the protection of the owner's rights through strong ethical and governance standards.

Utilization of Ultraviolet C Light-Emitting Diodes for the Deactivation of SARS-CoV-2 in Human Breath

Ultraviolet light has a long track record when it comes to use for deactivating harmful microorganisms. With recent developments in LED technology in terms of generating electromagnetic waves from this specific spectral range, new applications have emerged. In this study, the possibility of constructing an effective miniature UV barrier for deactivating the SARS-CoV-2 virus in both exhaled and inhaled air is investigated. Our findings demonstrate that utilizing commonly available UVC diodes operating at the wavelength of 275 nm makes it possible to attain an adequate level of deactivation that fulfills the standards specified for commercial devices. Full Text: PDF References N.G. Reed, "The History of Ultraviolet Germicidal Irradiation for Air Disinfection", Public Health Rep. 125(1), 15 (2010) CrossRef S. Oliveira De Souza, A. Cardoso, A. Sales, C. Sarmento, F. D'errico, "Effectiveness of a UVC air disinfection system for the HVAC of an ICU", Eur. Phys. J. Plus 137, 37 (2022), CrossRef N. Trivellin et al., "UV-Based Technologies for SARS-CoV2 Inactivation: Status and Perspectives", Electronics 10, 4 (2021), CrossRef R. S. Bergman, "Germicidal UV Sources and Systems", Photochem. Photobiol. 97(3), 466 (2021), CrossRef M. Shatalov, R. Jain, T. Saxena, A. Dobrinsky, M. Shur, "Chapter Two - Development of Deep UV LEDs and Current Problems in Material and Device Technology", Semiconductors and Semimetals 96, 45 (2017). CrossRef W. Kowalski, Ultraviolet Germicidal Irradiation Handbook UVGI for Air and Surface Disinfection, 1 (2009), CrossRef P. Sobotka, M. Przychodzki, K. Uściło, T.R. Woliński, M. Staniszewska, "Effect of Ultraviolet Light C (UV-C) Radiation Generated by Semiconductor Light Sources on Human Beta-Coronaviruses’ Inactivation", Materials 15(6), 2302 (2022), CrossRef Y. Gerchman, H. Mamane, N. Friedman, M. Mandelboim, "UV-LED disinfection of Coronavirus: Wavelength effect", J. Photochem. Photobiol. B Biol. 212, 112044 (2020), CrossRef R.M. Mariita, J.W. Peterson, "Not all wavelengths are created equal: disinfection of SARS-CoV-2 using UVC radiation is wavelength-dependent", Access Microbiology 3(11), 1 (2021), CrossRef Polio laboratory manual, 4th ed., World Health Organization 2004. DirectLink J.V. Maizel, D.O. White, M.D. Scharff, "The polypeptides of adenovirus: I. Evidence for multiple protein components in the virion and a comparison of types 2, 7A, and 12", Virology 36(1), 115 (1968), CrossRef H. Inagaki, A. Saito, H. Sugiyama, T. Okabayashi, S. Fujimoto, "Rapid inactivation of SARS-CoV-2 with deep-UV LED irradiation", Emerging Microbes and Infections 9(1), 1744 (2020), CrossRef

Physical Activity in Cancer Rehabilitation and Technology Acceptance: Results From the "Oncology in Motion" Project.

The international literature underlines that physical activity has a role in preventing cancer and is beneficial for cancer recovery and rehabilitation. Therefore, patient education is essential to stimulate training. Telemedicine and e-health tools like apps and wearables can support patients' education and the monitoring of their health condition and progress. The article reports the results of the Oncology in Motion telemedicine program of the National Cancer Institute of Aviano, Italy, to provide breast cancer patients with a personalized fitness path and telemonitoring. 144 women took part in the program. Low adherence was recorded, performing the customized training schedule and, for those women sticking to the plan, using the technological devices and submitting the training data to the Institute. Low technology acceptance and literacy, laziness, and lack of collaboration between cancer centers stood among the causes of low adherence, calling for more comprehensive and effective educational programs and support to stimulate physical activity and the use of new devices to get personalized counseling and contribute to the creation of knowledge.

On-chip Wi-Fi filter with FBW of 16.3 % and IL of 1.8 dB using novel T-type transmission zeros structure

A novel T-type topology is proposed for the first time to generate a pair of transmission zeros (TZs), enabling a wide range of resistive band rejection within a specific range. The working mechanism is elucidated through its even- and odd-mode equivalent circuits, and the design process is outlined. Moreover, an enhanced third-order high-pass filter is integrated with the T-type circuit to form a bandpass filter (BPF). This proposed BPF is fabricated using on-chip integrated passive device (IPD) technology. The measured and simulated results confirm its performance. Notably, the proposed IPD BPF has fractional bandwidth (FBW) of only 16.3 % and an insertion loss (IL) of 1.8 dB within the passband, thereby making it promising for narrowband applications. In addition, its compact size makes it suitable for Wi-Fi applications.

Graphene modulator and 2-bit encoder based on plasma induced transparency effect

Within this study, a periodic metasurface structure made up of two graphene strips, two fan-shaped graphene and a square ring graphene with notches is introduced to achieve plasma-induced transparency (PIT). The PIT effect is analyzed utilizing the Lorentz oscillatory coupling model, and it has been discovered that the theoretical values closely match the simulated values. The role of the Fermi level adjustments in graphene on the PIT effect was examined, and the PIT window was dynamically modified as the Fermi level changed, which was used to realize a 2-bit graphene encoder at 5.78 THz and 7.18 THz. The encoder boasts a greatest modulation depth of 80.9 % and exhibits a minimal insertion loss of 0.17 dB. By controlling the polarization direction of the incident photoelectric field, a high performance dual-channel switching modulator is successfully realized. Moreover, by increasing carrier mobility, the depth of modulation for the modulator at 11.22 THz is increased from 97.5 % to 99.5 %, and the insertion loss has dropped from 0.075 dB to 0.06 dB. In addition, the structure has superior sensing properties and slow light properties, featuring a sensitivity reaching up to 1.07 THz/RIU and a maximum group index of 293. The outcomes of our study contribute novel insights for the advancement of modulator, encoder, sensor technology and slow-light devices.

Development and application of carbon dioxide direct mineralization technology and emission reduction device

Abstract This study analyzes the principles and methods of carbon dioxide mineralization fixation to address the challenges posed by global climate and ecological changes, achieve carbon neutrality goals, and solve carbon utilization issues in the development of the fluorosilicon new material industry. The research focuses on the direct mineralization reaction system of carbon dioxide flue gas and the development of a carbon dioxide emission reduction device utilizing wet mineralized gas treatment technology. To implement alkaline waste management for industrial solid waste. The research shows that the wet carbon dioxide mineralization and emission reduction device can make the alkaline solution better mineralize carbon dioxide, avoid the gas discharge too fast and affect the reaction rate. At the same time, the solution is mixed and the exhaust linkage is carried out to further improve the reaction rate, and provide a reference for the development of large-scale carbon dioxide utilization technology suitable for high energy consumption industries.

Cattaneo-Christov fluxes for nonlinear mixed convective entropy generated Reiner-Rivlin material flow

Thermal and solutal transportation processes involve in tremendous useful applications related to heat exchanger, scientific, micro-electronic device technologies and industry sectors like nuclear reactors cooling, marine engineering, nanotechnology, thin-film technology, biomedical applications and thermal conduction in soft tissue. In view of such useful applications the Cattaneo-Christov analysis for nonlinear mixed convective Reiner-Rivlin material flow in presence of constant applied magnetic field is considered. Heat source, magnetohydrodynamics and radiation are incorporated in energy equation. Cattaneo-Christov flux is employed to discuss the thermal and mass transport characteristics. Entropy calculation in radiating flow is discussed. The proposed non-linear systems are transformed into dimensionless ordinary systems through appropriate transformation. Non-linear ordinary expressions are computed for convergent series solutions through Optimal homotopy analysis technique (OHAM). Graphical interpretations for quantities under interest against pertinent variables are explored. Large magnetic parameter has opposite impact for entropy and fluid flow. An increase of temperature through thermal relaxation time parameter is noticed. Velocity has same trend for both mixed convection and Reiner-Rivlin fluid variables. Reduction in concentration is seen for solutal relaxation time parameter. Temperature enhancement is witnessed in presence of heat generation. Entropy rate enhancement for radiation is observed. Decrease in concentration is noticed for reaction. Entropy rate increases against diffusion variable is enhanced.

Assessing the Potential of Smart Windows for Energy Efficiency in Tropical Buildings: A Review of Current Research and Future Directions

Abstract Smart windows have energy-saving potential in buildings in tropical climates. Characterized by high solar radiation, humidity, and temperature, tropical climates demand innovative solutions for energy-efficient building design. Smart windows, which can regulate the transmission of light and heat through different thermochromic, photochromic, or electrochromic technologies, are promising to reduce energy consumption in such buildings. Several emerging window technologies, such as gasochromic, hydrochromic, polymer-dispersed liquid crystal, and suspended particle device technologies, also have promising energy-saving potential. However, their high initial costs, durability, and reliability of these technologies limit their applicability. Prospects for smart windows in buildings in tropical climates include advancements in materials science, cost reduction, and integration of smart window technology with other building systems, such as lighting and heating, ventilation, and air conditioning systems. The potential benefits of smart windows for energy-saving s in buildings in tropical climates are substantial, up to 37%. Thus, further research and development in this area would lead to significant advancements in sustainable building design for a better future.

Technology Focus: Offshore Drilling and Completion (October 2024)

The evolution of computational technology, coupled with the ability to digitize hardware and engage with end users, has enabled machine learning to enhance operational efficiency, safety, and cost-effectiveness in offshore oil and gas development. A key takeaway from recent literature is that, while automation tools have been present for years, their widespread adoption has been hindered by a lack of demonstrable financial benefits. To address this, the focus has shifted from mere deployment to achieving real value through significant cost savings, increased safety, and improved operational efficiencies (paper OTC 35137). Automation efforts in onshore operations prioritize efficiency, while offshore automation must focus on risk reduction and minimizing nonproductive time. For instance, a cutting-edge vessel-motion-prediction tool integrates advanced machine-learning techniques with metocean forecasts to enhance the reliability and safety of offshore drilling operations (paper OTC 35341). Paper OTC 35418 presents the importance of autonomous inflow-control devices in maximizing the production life of wells in deepwater West Africa, taking into account the various challenging reservoir conditions. Another critical insight from the research is the role of human intervention in the deployment of automation systems. Successful deployment requires iterative adjustments and feedback from operators to tailor systems to the specific needs of offshore environments. Collaboration among engineers, operators, and decision-makers is essential in refining these technologies to align them with operational goals and safety standards. Overall, these papers underscore the need for strategic adaptation of automation systems to the specific challenges of offshore environments. The success of predictive machine learning in this context depends on its ability to offer measurable financial benefits, improve safety, and drive operational efficiency. Recommended additional reading at OnePetro: www.onepetro.org. SPE 218473 Performance Optimization of Water-Injection Wells Using Autonomous Outflow Control Device Technology in Offshore Norway by G.F. Kvilaas, AkerBP, et al. SPE 218479 Use of Wired Drill Pipe, Along-String Measurements, and Advanced Logging-While-Drilling Imaging Enhances Wellbore-Condition Understanding and Improves Well Delivery Time, While Telemetry-Optimized Ultradeep Resistivity Measurements Enable Precise Geological Well Placement by Stephen Pink, NOV, et al. SPE 218360 Autonomous Restriction Navigation Through Wellbore in Wireline and Slickline Operations by S. DiPasquale, SLB, et al. OTC 35394 Intelligent Optimization of Ultradeepwater Oil-Transmission Risers Using an Enhanced Graph Neural Network by Hong Zhu, China University of Petroleum-Beijing, et al.

Utilization of Computer-Based Testing Technology to Optimize Cognitive-Based Assessment Literacy in the Learning of Islamic Elementary School Students

The focus of 21st-century learning is on developing students' critical thinking, real-world application of knowledge, mastery of information technology, communication, and collaboration skills. Therefore, it is important to integrate information technology into the learning process and assessment of learning outcomes. This research aims to explore how Computer-Based Testing (CBT) can enhance the quality of cognitive assessment procedures based on literacy and improve learning evaluations for students at Islamic Elementary School. This study adopted a qualitative case study design and was conducted at Islamic Elementary School Al Wathoniyah 10 East Jakarta in the second semester of the 2023/2024 academic year. The researcher used interviews, observations, and documentation as data collection methods. The findings of this research show that literacy-based cognitive assessment using CBT can optimize the quality of learning evaluation. Teachers and students are accustomed to using information and communication technology devices in learning activities. There are five stages of the procedure in literacy-based cognitive assessment using CBT to optimize the quality of learning evaluation, including the planning stage, item question development stage, validation stage, implementation stage, and evaluation stage. The investigative conducting procedure truly optimizes the quality of learning evaluation. Islamic Elementary School Al Wathoniyah 10 utilizes CBT, which has literacy-based characteristics. CBT used in learning evaluation is equipped with meaningful stimuli and various forms of questions. The questions in CBT are made as similar as possible to the national assessment questions. The educational report results in the 2023 national assessment, especially in the cognitive domain, have shown improvement. The literacy and numeracy skills of students at Islamic Elementary School Al Wathoniyah 10 have achieved good and moderate results. Both have obtained top rankings nationally.

Modelling and Numerical Evaluation of Photovoltaic Parameters of a Highly Efficient Perovskite Solar Cell Based on Methylammonium Tin Iodide.

Designing a high performance solar cell structure requires the understanding of material innovation, device engineering, charge behavior, operation characteristics and efficient photoconversion of light to generate electricity. This study offers a detailed numerical evaluation of the device physics in a highly efficient methylammonium-based perovskite solar cell (PSC) of the configuration, FTO/WO3/CH₃NH₃SnI₃/GO/Fe. Utilizing the SCAPS-1D device simulator, an impressive open-circuit voltage (Voc) of 1.3184 V, short-circuit current density (Jsc) of 35.10 mA/cm², Fill factor (FF) of 78.38%, and power conversion efficiency (PCE) of 36.24% were achieved. The model cell exhibits a robust photon capture of 100% quantum efficiency between 360 and 750 nm. The study also presents temperature-dependent band alignment diagram which posted a built-in potential (Vbi) of 0.62 eV. The Vbi at 400 K was found to be 0.58 eV indicating that the model cell exhibits a decent temperature tolerance, and can retain approximately 93% of its power at 400 K. Through Mott-Schottky capacitance analysis, deeper insights into the space-charge region are inferred, while recombination-generation investigations emphasize the significance of electronic properties in optimizing device performance. This paper, therefore, lays the foundation for future studies, offering clear pathways for device optimization and identifying key areas that require further investigation.

Research Progress of Transcatheter Tricuspid Regurgitation Repair Device

The tricuspid valve has been nicknamed the "forgotten valve" and is often neglected by clinicians. However, tricuspid regurgitation is a common clinical heart valve disease. With the continuous development of transcatheter interventional medical device technology, the treatment of tricuspid regurgitation has gradually attracted attention, and more and more companies are developing interventional medical devices for treating this disease. This review will provide an overview of the current research progress on transcatheter therapy for tricuspid regurgitation repair devices at home and abroad, including the design principles, operational steps, clinical outcomes, and the advantages and disadvantages of these devices.

Inkjet‐printed quantum dot light‐emitting diodes: Development and challenges for display applications

AbstractQuantum dot (QD) technology is rapidly advancing and draws much attention for display applications where accurate and vibrant color reproduction is highly required. Currently, significant research is being conducted in developing quantum dot light‐emitting diode (QD‐LED) as next‐generation displays. QD‐LEDs offer several advantages, including high color purity, wide color gamut, and lower manufacturing costs. Recent advancements in QD synthesis and device engineering have significantly improved the performance of QD‐LEDs, but several challenges must be addressed for the successful commercialization. In this article, we provide an overview of QD‐LED developments and key issues that are required to be solved for realizing practical inkjet‐printed QD‐LED displays.

Research progress on key technologies of flexible wearable electronic devices

Flexible wearable device is an innovative technology product, using soft, lightweight material design, can fit the curve of the human body, providing a comfortable wearing experience. These devices typically integrate a variety of sensors, batteries, and connectivity technologies to enable biometric monitoring, motion tracking, communication, and other intelligent functions. Traditional electronic products tend to give a "stiff" impression that they cannot withstand bending, twisting and stretching. In recent years, under the background of the integration of electronic technology and modern material science technology, the emerging flexible electronic wearable device has become a research hotspot with its more flexible material, more sensitive and accurate signal transmission, and more extensive monitoring range. The development of flexible electronic technology has greatly improved the user's wearing experience and is more suitable for the free movement of the human body. This paper summarizes the basic principle and classification of key technologies of wearable electronic devices, and introduces the research progress and research trend.

PEMBERDAYAAN MASYARAKAT MELALUI DIGITALISASI PENGOLAHAN DATA NASABAH di BANK SAMPAH KEMUNING, JATI MELATI, KOTA BEKASI

Household waste in RW 12, Jati Melati, Pondok Melati, Bekasi City if not managed properly will result in piles of garbage that pile up and cause unpleasant odor pollution. This problem can be overcome by the presence of the Kemuning Waste Bank in the local environment. The impact of the waste bank, household waste can be reduced because some of the waste is deposited into the waste bank and provides economic value for the depositor. However, there is a problem faced by the Kemuning Waste Bank, namely in terms of recording customer data which is still done manually because it does not have technological devices that support digital recording. This makes it difficult for officers to recapitulate customer data reports, present information on the amount of waste obtained based on the category and type of waste, and calculate customer savings payments when due. This activity uses the method of designing a data input system, socialization, training and mentoring. The results of Community Service Activities show that officers have the competence to input, process and present data on the same day as the day of deposit and weighing customer waste.

Molecular Design of Active Layer for High-Performance Stretchable Organic Solar Cells.

Stretchable organic solar cells (SOSCs) have advanced rapidly in the last few years as power sources required to realize portable and wearable electronics become available. Through rational material and device engineering, SOSCs are now able to retain their photovoltaic performance even when subjected to repeated mechanical deformations. However, reconciling a high efficiency and an excellent stretchability is still a huge challenge, and the development of SOSCs has lagged far behind that of flexible OSCs. In this perspective article, recent strategies for imparting mechanical robustness to SOSCs while maintaining high power conversion efficiency are reviewed, with emphasis on the molecular design of active layers. Initially, an overview of molecular design approaches and recent research advances is provided in improving the stretchability of active layers, including donors, acceptors, and single-component materials. Subsequently, another common strategy for regulating photovoltaic and mechanical properties of SOSCs, namely multi-component system, is summarized and analyzed. Lastly, considering that SOSCs research is in its infancy, the current challenges and future directions are pointed out.

The Use of Mobile Phones as an Academic Tool to Acquire Vocabu-lary During English Learning as a Foreign Language in Ecuador

Several teachers are currently implementing more innovative, entertaining, and effective educational methods to teach English as a foreign language (EFL). One strategy is to use smartphones as an academic tool. Therefore, this research aims to analyze the usefulness of using smartphones in acquiring new vocabulary to develop communication skills. This work seeks to contribute to helping teachers and students who wish to learn a foreign language and acquire communication skills through the use of a popular device. Many children, youngsters, and adults, have at least one cellphone, and more since the COVID-19 pandemic in 2020, when it was almost mandatory to use these powerful technological devices to do homework. Now, it is also used for communication and entertainment. This research used bibliographic documentation analysis of academic studies. The research focused on the search for bibliographic documentation of academic studies related to the topic. There are thousands of applications, blogs, and digital bases, many of them free, for people to access autonomous learning using mobile learning that they can do anywhere and at any time, as long as they are connected to the internet. The apps used in this research were Kahoot, hangman, and songs. The results of this research showed a significant communicational improvement. Smartphones help EFL students to create a more entertaining environment. Smartphones have managed to break shyness and improve concentration and participation in class. Therefore, the author recommends using this tool to acquire a new language.

Linear equivalence for motion amplification devices in earthquake engineering

AbstractMotion amplification devices utilized to amplify the motion of dampers can effectively improve the energy dissipation performance of dampers to reduce seismic responses of engineering structures. This study systematically develops a linear equivalence theory for motion amplification devices based on the proposed equivalent Maxwell model. This equivalent model accurately predicts the supplemental damping effect provided by motion amplification devices without approximation. Also, the equivalent model is capable of quantifying the amplification effect of motion amplification devices by means of deriving the analytical expressions of the equivalent damping and stiffness coefficients, which reveal that motion amplification devices simultaneously enhance the original damping and stiffness coefficients by , where is the proposed rigidity motion amplification factor. The representative value of member stiffness is developed to comprehensively evaluate the supporting stiffness of motion amplification devices. All the achieved results strongly support that the proposed linear equivalence theory provides a generic paradigm to explain, measure and compare different types of motion amplification devices in terms of their supplemental damping effects, and hence helps researchers and engineers gain valuable insight into the dynamic properties of motion amplification devices.