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  1. No Access

    Article

    Correlation proposing and ANN modelling of thermohydraulic performance for delta-shaped winglet-type solar water heating system

    The efficient use of renewable energy sources becomes necessary due to rise in energy demand and dwindling traditional energy sources. In present work, solar water heating system (SWHS) is modified to improve ...

    Rohit Khargotra, Sushil Kumar, Tej Singh in Journal of Thermal Analysis and Calorimetry (2024)

  2. No Access

    Article

    Effects of climate variables and nanofluid-based cooling on the efficiency of a liquid spectrum filter-based concentrated photovoltaic thermal system

    The primary aim of the research is to improve photovoltaic thermal systems, with a particular focus on enhancing their efficiency and overall effectiveness by utilizing the Fresnel lens and nanofluid-based liq...

    Sushil Kumar, Raj Kumar, Robin Thakur in Journal of Thermal Analysis and Calorimetry (2024)

  3. Article

    Open Access

    Different energy storage techniques: recent advancements, applications, limitations, and efficient utilization of sustainable energy

    In order to fulfill consumer demand, energy storage may provide flexible electricity generation and delivery. By 2030, the amount of energy storage needed will quadruple what it is today, necessitating the use...

    Raj Kumar, Daeho Lee, Ümit Ağbulut in Journal of Thermal Analysis and Calorimetry (2024)

  4. Article

    Open Access

    Performance analysis and modelling of circular jets aeration in an open channel using soft computing techniques

    Dissolved oxygen (DO) is an important parameter in assessing water quality. The reduction in DO concentration is the result of eutrophication, which degrades the quality of water. Aeration is the best way to e...

    Diksha Puri, Raj Kumar, Sushil Kumar, M. S. Thakur, Gusztáv Fekete in Scientific Reports (2024)

  5. No Access

    Chapter and Conference Paper

    A Real-Time Eye Gaze Tracking Based Digital Mouse

    Accessibility is a fundamental right for people with disabilities. It is the duty of society to ensure equal opportunities and strong participation in all aspects of society, including education, employment, a...

    SeHyun Kwak, Daeho Lee, Siwon Kim in Innovative Mobile and Internet Services in… (2024)

  6. Article

    Open Access

    Factors that affect consumer trust in product quality: a focus on online reviews and shop** platforms

    The growing popularity of online shop** means that consumers must determine product quality after they make a purchase decision and receive the product, a situation that is directly related to the issue of c...

    Eunsuk Sung, Won Young Chung, Daeho Lee in Humanities and Social Sciences Communications (2023)

  7. No Access

    Article

    User acceptance on content optimization algorithms: predicting filter bubbles in conversational AI services

    As the role of artificial intelligence (AI) agents in information curation has emerged with recent advancements in AI technologies, the present study explored which users would potentially be susceptible to th...

    Hosoo Cho, Daeho Lee, Jae-Gil Lee in Universal Access in the Information Society (2023)

  8. No Access

    Article

    Shank Shock Absorption Mechanism and Associated Gait Pattern Design for Reduction of Ground Impact of a Powered Exoskeleton

    Powered exoskeletons for people with complete paraplegia are subject to repetitive large impacts due to the recurrent ground contacts. Those impact forces not only deteriorate the ride comfort but also cause a...

    Jeongsu Park, Daeho Lee, Kyoungchul Kong in International Journal of Control, Automati… (2023)

  9. Article

    Can Robots Help Working Parents with Childcare? Optimizing Childcare Functions for Different Parenting Characteristics

    Is it true that parents always prioritize educational effectiveness when selecting childcare services? The current study identified the potential requirements of dual-income parents toward social robots’ diver...

    Jieon Lee, Daeho Lee, Jae-gil Lee in International Journal of Social Robotics (2022)

  10. Article

    Open Access

    Laser digital patterning of conductive electrodes using metal oxide nanomaterials

    As an alternative approach to the conventional deposition and photolithographic processes, the laser digital patterning (LDP) process, which is also known as the laser direct writing process, has attracted con...

    Vu Binh Nam, Trinh Thi Giang, Sangmo Koo, Junsuk Rho, Daeho Lee in Nano Convergence (2020)

  11. No Access

    Article

    Periodic solutions of Wick-type stochastic Korteweg–de Vries equations

    Nonlinear stochastic partial differential equations have a wide range of applications in science and engineering. Finding exact solutions of the Wick-type stochastic equation will be helpful in the theories an...

    JIN HYUK CHOI, DAEHO LEE, HYUNSOO KIM in Pramana (2016)

  12. Article

    Open Access

    Solution-Processible Crystalline NiO Nanoparticles for High-Performance Planar Perovskite Photovoltaic Cells

    In this work, we report on solution-based p-i-n-type planar-structured CH3NH3PbI3 perovskite photovoltaic (PV) cells, in which precrystallized NiO nanoparticles (NPs) without post-treatment are used to form a hol...

    Uisik Kwon, Bong-Gi Kim, Duc Cuong Nguyen, Jong-Hyeon Park in Scientific Reports (2016)

  13. No Access

    Article

    Laser wavelength effect on laser-induced photo-thermal sintering of silver nanoparticles

    This work is concerned with the laser wavelength effect on the electrical properties and surface morphology of laser-sintered nanoparticle thin films. Silver nanoparticle thin films spin-coated on soda lime g...

    Dongwoo Paeng, Junyeob Yeo, Daeho Lee, Seung-Jae Moon in Applied Physics A (2015)

  14. No Access

    Article

    Selective and localized laser annealing effect for high-performance flexible multilayer MoS2 thin-film transistors

    We report the use of ultra-short, pulsed-laser annealed Ti/Au contacts to enhance the performance of multilayer MoS2 field effect transistors (FETs) on flexible plastic substrates without thermal damage. An analy...

    Hyukjun Kwon, Woong Choi, Daeho Lee, Yunsung Lee, Junyeon Kwon in Nano Research (2014)

  15. Article

    Open Access

    Friedmann equation and the emergence of cosmic space

    In this paper, we show that Padmanabhan’s conjecture for the emergence of cosmic space [ar**v:1206.4916] holds for the flat Friedmann-Robertson-Walker universe in Einstein gravity but does not hold for the non...

    Ee Chang-Young, Daeho Lee in Journal of High Energy Physics (2014)

  16. No Access

    Article

    Non-vacuum, single-step conductive transparent ZnO patterning by ultra-short pulsed laser annealing of solution-deposited nanoparticles

    A solution-processable, high-concentration transparent ZnO nanoparticle (NP) solution was successfully synthesized in a new process. A highly transparent ZnO thin film was fabricated by spin coating without va...

    Daeho Lee, Heng Pan, Seung Hwan Ko, Hee K. Park, Eunpa Kim in Applied Physics A (2012)

  17. No Access

    Article

    Fiber laser annealing of indium-tin-oxide nanoparticles for large area transparent conductive layers and optical film characterization

    Indium tin oxide (ITO) coatings are widely used as transparent electrodes for optoelectronic devices. The most common preparation methods are sputtering, evaporation, and wet chemical deposition. ITO coatings ...

    Heng Pan, Daeho Lee, Seung Hwan Ko, Costas P. Grigoropoulos in Applied Physics A (2011)

  18. Article

    Open Access

    Laser-induced acoustic wave generation/propagation/interaction in water in various internal channels

    Short pulsed laser-induced single acoustic wave generation, propagation, interaction within a water-filled internal channel are experimentally and numerically studied. A large-area, short-duration, single-plan...

    Seung Hwan Ko, Daeho Lee, Heng Pan, Sang-Gil Ryu in Applied Physics A (2010)

  19. Article

    Open Access

    232 Real-time and gated MR Doppler

    Juan M Santos, Adam B Kerr, Daeho Lee in Journal of Cardiovascular Magnetic Resonan… (2008)

  20. Article

    Interfacial Adhesion Strength between Fibers of Liquid Crystalline Polymer and Thermoplastic Matrix

    The interfacial shear stress between fibers of liquid crystalline polymer (LCP) and various thermoplastics was evaluated using a single fiber composite test. Several ductile polymers such as polycarbonate (PC)...

    Kilwon Cho, Taehyun Kong, Daeho Lee in Polymer Journal (1997)