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Virtual Keyboard:A Real-Time Hand Gesture Recognition-Based Character Input System Using LSTM and Mediapipe Holistic

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Computer Systems Science & Engineering 2024年第2期48卷 555-570页

作者： Bijon Mallik Md Abdur Rahim Abu Saleh Musa Miah Keun soo yun Jungpil Shin Department of Computer Science and Engineering Pabna University of Science and TechnologyPabna6600Bangladesh School of Computer Science and Engineering The University of AizuAizuwakamatsuFukushima965-8580Japan School of Computer and Information Technology Ulsan CollegeDong-guUlsan44610South Korea

In the digital age,non-touch communication technologies are reshaping human-device interactions and raising security concerns.A major challenge in current technology is the misinterpretation of gestures by sensors and cameras,often caused by environmental *** issue has spurred the need for advanced data processing methods to achieve more accurate gesture recognition and *** study presents a novel virtual keyboard allowing character input via distinct hand gestures,focusing on two key aspects:hand gesture recognition and character input *** developed a novel model with LSTM and fully connected layers for enhanced sequential data processing and hand gesture *** also integrated CNN,max-pooling,and dropout layers for improved spatial feature *** model architecture processes both temporal and spatial aspects of hand gestures,using LSTM to extract complex patterns from frame sequences for a comprehensive understanding of input *** unique dataset,essential for training the model,includes 1,662 landmarks from dynamic hand gestures,33 postures,and 468 face landmarks,all captured in real-time using advanced pose *** model demonstrated high accuracy,achieving 98.52%in hand gesture recognition and over 97%in character input across different *** excellent performance in real-time testing underlines its practicality and effectiveness,marking a significant advancement in enhancing human-device interactions in the digital age.

关键词： Hand gesture recognition M.P.holistic open CV virtual keyboard LSTM human-computer interaction

Nanoconfinement effect of nanoporous carbon electrodes for ionic liquid-based aluminum metal anode

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Journal of Energy Chemistry 2022年第11期31卷 121-127,I0005页

作者： Juhee Yoon Seongbak Moon Son Ha Hyung-Kyu Lim Hyoung-Joon Jin Young soo yun Program in Environmental and Polymer Engineering Inha UniversityIncheon 22212South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul 02841South Korea Division of Chemical Engineering and Bioengineering Kangwon National UniversityGangwon-do 24341South Korea Department of Integrative Energy Engineering Korea UniversitySeoul 02841South Korea

Rechargeable aluminum batteries(RABs),which use earth-abundant and high-volumetric-capacity metal anodes(8040 m Ah cm-3),have great potential as next-generation power sources because they use cheaper resources to deliver higher energies,compared to current lithium ion ***,the mechanism of charge delivery in the newly developed,ionic liquid-based electrolytic system for RABs differs from that in conventional organic ***,targeted research efforts are required to address the large overpotentials and cycling decay encountered in the ionic liquid-based electrolytic *** this study,a nanoporous carbon(NPC)electrode with well-developed nanopores is used to develop a high-performance aluminum *** negatively charged nanopores can provide quenched dynamics of electrolyte molecules in the aluminum deposition process,resulting in an increased collision *** fast chemical equilibrium of anionic species induced by the facilitated anionic collisions leads to more favorable reduction reactions that form aluminum *** nanoconfinement effect causes separated nucleation and growth of aluminum nanoparticles in the multiple confined nanopores,leading to higher coulombic efficiencies and more stable cycling performance compared with macroporous carbon black and 2D stainless steel electrodes.

关键词： Nanoconfinement effect Nanoporous carbon Ionic liquid electrolyte Metal anode Aluminum batteries Multivalent batteries

Acute kidney injury due to intravenous detergent poisoning:A case report

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World Journal of Clinical Cases 2022年第6期10卷 2036-2044页

作者： Sungbin Park Hyun-Sik Ryu Jae-Kwang Lee Sung-soo Park Sun-Jung Kwon won-Min Hwang Sung-Ro yun Moon-Hyang Park Yohan Park Department of Internal Medicine Division of NephrologyKonyang University HospitalCollege of MedicineDaejeon 35365South Korea Department of Emergency Medicine Konyang University HospitalCollege of MedicineDaejeon 35365South Korea Department of Internal Medicine Division of Respiratory and Critical Care MedicineKonyang University HospitalCollege of MedicineDaejeon 35365South Korea Department of Pathology Konyang University HospitalCollege of MedicineDaejeon 35365South Korea

BACKGROUND Detergent poisoning mostly occurs through oral ingestion(>85%),ocular exposure(<15%),or dermal exposure(<8%).Reports of detergent poisoning through an intravenous injection are extremely *** addition,there are very few cases of renal toxicity directly caused by ***,we report a unique case of acute kidney injury caused by detergent poisoning through an accidental intravenous *** SUMMARY A 61-year-old man was intravenously injected with 20 mL of detergent by another patient in the same room of a local *** surfactant and calcium carbonate accounted for the largest proportion of the *** patient complained of vascular pain,chest discomfort,and nausea,and was transferred to our *** hospitalization,the patient’s serum creatinine level increased to 5.42 mg/dL,and his daily urine output decreased to approximately 300 *** biopsy findings noted that the glomeruli were relatively intact;however,diffuse acute tubular injury was *** edema was also noted,and the patient underwent a total of four hemodiafiltration ***,the patient’s urine output gradually increased whereas the serum creatinine level *** patient was discharged in a stable status without any *** Detergents appear to directly cause renal tubular injury by systemic *** treating a patient with detergent poisoning,physicians should be aware that the renal function may also *** addition,timely renal replacement therapy may help improve the patient’s prognosis.

关键词： Detergents Poisoning Intravenous injection Acute kidney injury Acute tubular injury Case report

Recurred forehead osteoma disseminated after previous osteoma excision:A case report

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World Journal of Clinical Cases 2023年第31期11卷 7684-7689页

作者： Dong yun Lee sooA Lim Jung soo Yoon SuRak Eo Plastic and Reconstructive Surgery DongGuk University Medical CenterGoYang 10326South Korea

BACKGROUND Forehead osteoma is a commonly encountered benign facial bone *** excision of benign forehead masses is widely ***,we report a rare case of recurrent forehead osteoma that disseminated after a previous osteoma *** SUMMARY A 54-year-old female patient had previously undergone endoscopic removal of a single forehead osteoma at 30 years of ***,she had a recurrent osteoma around the same site and underwent another endoscopic resection at 40 years of *** her first visit to our outpatient clinic,she presented with a cobblestone-like irregular surface on the forehead and a 3D facial bone computed tomography scan revealed a widely ragged surface of the inoculated osteoma on the outer table of the frontal *** general anesthesia,we performed a radical complete excision of the disseminated osteoma through a bicoronal incision using an osteotome,chisel,mallet,and *** hypothesized that the recurrence may have been caused by the inoculation of residual osteoma remnants from the previous *** surgeons should be cautious when removing osteoma particles,particularly when using an endoscopic *** To prevent recurrence,it is essential to conduct additional meticulous burring and a thorough inspection of the surface after copious irrigation.

关键词： Recurred osteoma Inoculation Dissemination Bicoronal approach Craniofacial Case report

Sulfur-doped hard carbon hybrid anodes with dual lithium-ion/metal storage bifunctionality for high-energy-density lithium-ion batteries

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Carbon Energy 2023年第1期5卷 71-81页

作者： Sungmin Cho Jong Chan Hyun Son Ha Yeonhua Choi Honggyu Seong Jaewon Choi Hyoung-Joon Jin Young soo yun Program in Environmental and Polymer Engineering Inha UniversityIncheonSouth Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulSouth Korea Departmant of Chemistry and Research Institute of Natural Science Gyeongsang National UniversityJinjuSouth Korea Department of Polymer Science and Engineering Inha UniversityIncheonSouth Korea Division of Energy Engineering Kangwon National UniversityGangwon-doSouth Korea

Bifunctional hybrid anodes(BHAs),which are both a high-performance active host material for lithium-ion storage as well as a guiding agent for homogeneous lithium metal nucleation and growth,exhibit significant potential as anodes for next-generation high-energy-density lithium-ion batteries(LIBs).In this study,sulfur-doped hard carbon nanosphere assemblies(S-HCNAs)were prepared through a hydrothermal treatment of a liquid organic precursor,followed by high-temperature thermal annealing with elemental sulfur for application as BHAs for *** a carbonate-based electrolyte containing fluoroethylene carbonate additive,the S-HCNAs showed high lithium-ion storage capacities in sloping as well as plateau voltage sections,good rate capabilities,and stable *** addition,high average Coulombic efficiencies(CEs)of~96.9%were achieved for dual lithium-ion and lithium metal storage *** the LIB full-cell tests with typical NCM811 cathodes,the S-HCNA-based BHAs containing~400 mA h g^(−1) of excess lithium led to high energy and power densities of~500Wh kg^(−1) and~1695Wkg^(−1),respectively,and a stable cycling performance with~100%CEs was achieved.

关键词： hard carbon hybrid anode lithium-ion batteries lithium metal anode lithium metal batteries sulfur-doped carbon

High-performance solid-solution potassium-ion intercalation mechanism of multilayered turbostratic graphene nanosheets

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Journal of Energy Chemistry 2022年第4期31卷 814-823页

作者： Jiae Um Seung Uk Yoon Hoseong Kim Beom Sik Youn Hyoung-Joon Jin Hyung-Kyu Lim Young soo yun Program in Environmental and Polymer Engineering Inha Universityncheon 22212 South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea Division of Chemical Engineering and Bioengineering Kangwon National University Chuncheon Gangwon-do 24341 South Korea KU-KIST Graduate School of Converging Science and Technologyea University 145 Anam-roSeongbuk-guSoul02841 South Korea Department of Integrative Energy Engineering 145 Anam-roSongbuk-guKorea UniversitySeoul 02841 South Korea

The solid-solution reaction between an alkali cation and an active host material is known as a singlephase redox mechanism,and it is typically accompanied by a continuous voltage *** is distinct from the typical alkali cation intercalation reaction at an equivalent site of the active host material,which exhibits a voltage ***,we report an unusual solid-solution potassium-ion intercalation mechanism with a low-voltage plateau capacity on multilayered turbostratic graphene nanosheets(T-GNSs).Despite the disordered graphitic structure with a broad range of d-spacings(3.65–4.18À),the T-GNSs showed a reversible plateau capacity of~200 m A h g^(-1),which is higher than that of a well-ordered graphite nanoplate(~120 m A h g^(-1)).In addition,a sloping capacity of~220 m A h g^(-1)was delivered with the plateau capacity,and higher rate capabilities,better reversibility,and a more stable cycling performance were confirmed on the turbostratic ***-principles calculations suggest that the multitudinous lattice domains of the T-GNSs contain diverse intercalation sites with strong binding energies,which could be the origin of the high-performance solid-solution potassium-ion intercalation behavior when the turbostratic graphene stacks have a d-spacing smaller than that of equilibrium potassium–graphite intercalation compounds(5.35À).

关键词： Turbostratic graphite Graphene nanosheet Defective carbon Anode Potassium-ion batteries

Successful reconstruction of an ankle defect with free tissue transfer in a hemophilia A patient with repetitive hemoarthrosis:A case report

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World Journal of Clinical Cases 2023年第17期11卷 4079-4083页

作者： Dong yun Lee sooA Lim SuRak Eo Jung soo Yoon Department of Plastic and Reconstructive Surgery DongGuk University Medical CenterGoYang 10326South Korea

BACKGROUND Hemophilia, an uncommon yet consequential hereditary bleeding disorder, manifests as two clinically indistinguishable forms that hinder the normal functioning of the coagulation cascade. This impairment renders individuals more susceptible to excessive bleeding during significant surgical interventions. Moreover, individuals with severe hemophilia frequently encounter recurring hemarthrosis, resulting in progressive joint destruction and, subsequently, the need for hip and knee replacement *** SUMMARY The patient was a 53-year-old man with hemophilia A as the underlying disease and had self-injected factor Ⅷ twice weekly for several decades. He had undergone ankle fusion surgery for recurrent hemarthrosis at the Department of Orthopedic Surgery 1 mo prior and was referred to our department because of skin necrosis after a hematoma at the surgical site. An anterolateral thigh perforator free flap was created after three cycles of factor Ⅷ administration in addition to the concomitant administration of tranexamic acid(TXA)(Transamin 250 mg cap, 1 cap tid, q8h). After the operation, from postoperative days(PODs) 1-5, the factor Ⅷ dose and interval were maintained, and q12h administration was tapered to q24h administration after POD 6. Because the patient’s flap was stable 12 d after the operation, factor Ⅷ administration was tapered to twice a week. At 6 mo follow-up, the patient recovered well without any *** To the best of our knowledge, there are very few reports of successful free flaps in patients with hemophilia, and none have been reported in patients with hemophilia A. Moreover, there are several reports on the efficacy of TXA in free flaps in general patients;however, there are no case reports of combining factor Ⅷ and TXA in patients with hemophilia. Therefore, we report this case to contribute to future academic research.

关键词： Free tissue transfer Anterolateral thigh free flap Hemophilia A Hemoarthrosis Factor VIII Tranexamic acid Case report

Gouty tenosynovitis with compartment syndrome in the hand: A case report

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World Journal of Clinical Cases 2023年第30期11卷 7492-7496页

作者： Dong yun Lee SuRak Eo sooA Lim Jung soo Yoon Department of Plastic and Reconstructive Surgery DongGuk University Medical CenterGoYang 10326South Korea

BACKGROUND Gout is a common type of inflammatory arthritis caused by the deposition of monosodium urate crystals in the joints and surrounding *** typically appears with abrupt and intense pain,redness,and swelling in the affected *** frequently targets the lower extremities,such as the big ***,rarely,gout can manifest in atypical locations,including the hands,leading to an uncommon presentation known as gouty ***,it can result in significant morbidity owing to the potential for severe complications,such as myonecrosis and compartment *** SUMMARY An 82-year-old male patient with a history of hypertension,cerebral infarction,Parkinson's disease,and recurrent gout attacks sought medical attention because of progressive pain and swelling in the right *** findings revealed forearm swelling,raising concerns of possible tenosynovitis,bursitis,septic arthritis,and compartment syndrome.A fasciotomy was performed to decompress the patient’s hands and *** procedure revealed diffuse tenosynovitis,tophi with a pus-like discharge surrounding the carpal tunnel,and involvement of the flexor and extensor tendon ***,microbiological investigations,including Gram staining,acid-fast bacilli,tuberculosis,and nontuberculous mycobacteria,yielded negative *** patient was ultimately diagnosed with a severe gouty attack with compartment syndrome and *** arthritis and infectious flexor tenosynovitis were ruled *** debridement and inflammation control were initiated,followed by staged closure with a skin *** Septic-like complications can occur in the absence of infection in severe gout attacks with pus-like discharges due to compartment syndrome and *** can be used to differentiate between gouty attacks,septic arthritis,and infectious *** of the flexor and extensor muscles,as in this case,is *** study contributes to the literature

关键词： Compartment syndrome Extensor compartment Gout Tenosynovitis Case report

Devastating complication of negative pressure wound therapy after deep inferior epigastric perforator free flap surgery:A case report

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World Journal of Clinical Cases 2023年第1期11卷 143-149页

作者： sooA Lim Dong yun Lee BumSik Kim Jung soo Yoon Yea Sik Han SuRak Eo Department of Plastic and Reconstructive Surgery DongGuk University Medical CenterGoYang 10326South Korea

BACKGROUND Thermal injuries on free transferred or replanted tissues resulting from loss of sensibility are an infrequent *** require immediate and appropriate management before they progress to an irreversible *** negative pressure wound therapy(NPWT)can prevent wound progression by increasing microcirculation,the inappropriate application of NPWT on complicationthreatened transferred and replanted tissues can induce an adverse *** SUMMARY A 48-year-old woman who underwent immediate breast reconstruction with a deep inferior epigastric artery perforator free *** applying a heating pad directly to the flap site,she sustained a deep second to third-degree contact burn over 30%of the transferred flap on postoperative 7 *** the necrotic changes had progressed,we applied an NPWT dressing over the burned area after en-bloc debridement of the transferred tissues on postoperative 21 *** 4 d of NPWT application,the exposed fatty tissues of the flap changed to dry and browncolored necrotic *** further debridement,we noted that the wound gradually reached total necrosis with a collapsed vascular pedicle of deep inferior epigastric *** Although NPWT has been shown to be successful for treating various wound types,the significant risk of NPWT application in short-lasting reconstructed flap wounds after thermal injury should be reminded.

关键词： Negative Pressure Wound Therapy Complications Breast reconstruction Deep inferior epigastric artery perforator Free flap Burn injury Case report