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NUMERICAL SIMULATION OF SOLITARY WAVE RUN-UP AND OVER-TOPPING USING BOUSSINESQ-TYPE MODEL

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Journal of Hydrodynamics 2012年第6期24卷 899-913页

作者： TSUNG Wen-Shuo hsiao shih-chun LIN Ting-Chieh Department of Hydraulic and Ocean Engineering National Cheng Kung University Tainan Hydraulics Laboratory National Cheng Kung University

In this article, the use of a high-order Boussinesq-type model and sets of laboratory experiments in a large scale flume of breaking solitary waves climbing up slopes with two inclinations are presented to study the shoreline behavior of breaking and non-breaking solitary waves on plane slopes. The scale effect on run-up height is briefly discussed. The model simulation capability is well validated against the available laboratory data and present experiments. Then, serial numerical tests are conducted to study the shoreline motion correlated with the effects of beach slope and wave nonlinearity for breaking and non-breaking waves. The empirical formula proposed by hsiao et al. for predicting the maximum run-up height of a breaking solitary wave on plane slopes with a wide range of slope inclinations is confirmed to be cautious. Furthermore, solitary waves impacting and overtopping an impermeable sloping seawall at various water depths are investigated. Laboratory data of run-up height, shoreline motion, free surface elevation and overtopping discharge are presented. Comparisons of run-up, run-down, shoreline trajectory and wave overtopping discharge are made. A fairly good agreement is seen between numerical results and experimental data. It elucidates that the present depth-integrated model can be used as an efficient tool for predicting a wide spectrum of coastal problems.

关键词： Boussinesq equations solitary wave run-up shoreline scale effect overtopping

AN EXPERIMENTAL OBSERVATION OF A SOLITARY WAVE IMPINGE-MENT,RUN-UP AND OVERTOPPING ON A SEAWALL

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Journal of Hydrodynamics 2012年第1期24卷 76-85页

作者： LIN Ting-Chieh HWANG Kao-Shu hsiao shih-chun YANG Ray-Yeng Tainan Hydraulics Laboratory National Cheng Kung UniversityTainan 701 Department of Hydraulic and Ocean Engineering National Cheng Kung UniversityTainan 701 Tainan Hydraulics Laboratory and Department of Hydraulic and Ocean Engineering National Cheng Kung UniversityTainan 701

A sequence of laboratory experiments using solitary waves was performed to model the effect of leading form of three types of tsunamis（a bore,an impinging wave and an overtopping wave）on a seawall on a sloping *** wave evolution process,impinging pressure along the seawall surface,total overtopping discharge behind the seawall and the maximum run-up height on the rear slope were measured and *** data were employed to re-examine relevant empirical formulae in the *** effect of the presence of the seawall in reducing maximum run-up height using the present setup was briefly *** present data can be used for calibrating numerical and mathematical models.

关键词： solitary wave tsunami wave force run-up overtopping

Microplastic and nanoplastic exposure and risk of diabetes mellitus

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World Journal of Clinical Cases 2025年第3期13卷 24-29页

作者： Hui-Yi hsiao chung-Yi Nien Ruei-Feng Shiu Wei-chun Chin Tzung-Hai Yen Department of Biomedical Sciences College of MedicineChang Gung UniversityTaoyuan 33302TaiwanChina Center for Tissue Engineering Chang Gung Memorial HospitalLinkouTaoyuan 33305TaiwanChina Department of Life Sciences National Central UniversityZhongli 320317TaoyuanTaiwanChina Center of Excellence for The Oceans Taiwan Ocean UniversityKeelung 20224TaiwanChina Institute of Marine Environment and Ecology Taiwan Ocean UniversityKeelung 20224TaiwanChina Department of Chemical and Materials Engineering University of California MercedMercedCA 95343United States Department of Nephrology Clinical Poison CenterChang Gung Memorial HospitalLinkou 33305TaoyuanTaiwanChina School of Traditional Chinese Medicine College of MedicineChang Gung UniversityTaoyuan 33302TaiwanChina

The issue of plastic pollutants has become a growing *** microplastics(MPs)(particle size<5 mm)and nanoplastics(NPs)(particle size<1μm)can cause DNA damage,cytotoxicity,and oxidative stress in various *** primary known impacts of microplastic/nanoplastic are observed in the liver and respiratory system,leading to hepatotoxicity and chronic obstructive pulmonary *** research on the effects of MPs and NPs on diabetes is still in its early stages,there are potential *** editorial highlights the risk to diabetics from co-exposure to contaminants and MPs/NPs,supported by evidence from animal studies and the various chemical compositions of MPs/NPs.

关键词： Microplastics Nanoplastics Plastic pollution,Diabetes mellitus Insulin resistance

Herpes simplex virus 2-induced aseptic meningitis presenting with sudden deafness:A case report

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World Journal of Clinical Cases 2025年第8期13卷 22-25页

作者： Yuan-Cheng Liu shih-Hsuan hsiao Peir-Rong Chen Department of Otolaryngology Hualien Tzu Chi HospitalHualien 970TaiwanChina Department of Otolaryngology Hualien Tzu Chi Hospitaland Department of OtolaryngologyHead and Neck SurgerySchool of MedicineTzu Chi UniversityHualien 970TaiwanChina

BACKGROUND Aseptic meningitis is defined as meningeal inflammation caused by various etio-logies with negative cerebrospinal fluid(CSF)bacterial *** most common etiologies are viruses[enteroviruses,arboviruses,and herpes simplex virus type 2(HSV-2)].Aseptic meningitis can have various presentations,including sensori-neural *** sensorineural deafness from mumps meningoencephalitis has been reported,cases of HSV-2-induced hearing loss are ***,we re-port a case of HSV-2-induced meningitis that presented with sudden *** SUMMARY A 68-year-old man experienced a profound sudden onset of left-sided hearing loss for one ***-tone audiograms demonstrated sudden left-sided sensorineural hearing loss(thresholds 80-90 dB).After treatment with high-dose steroids for 1 week,he experienced an acute consciousness change with left *** laboratory data showed no significant *** computed tomography without contrast and magnetic resonance imaging revealed no intracranial hemo-rrhage or obvious brain *** CSF analysis and the Multiplex PCR panels showed HSV-2 ***,under the diagnosis of herpes meningoenceph-alitis,acyclovir was prescribed and his symptoms gradually *** This case report further demonstrates that a viral infection could be a cause of sudden sensorineural hearing loss.

关键词： Aseptic meningitis Type 2 herpes simplex Sudden sensorineural hearing loss Immunocompromised Cerebrospinal fluid Case report

Ideal Bi-Based Hybrid Anode Material for Ultrafast Charging of Sodium-Ion Batteries at Extremely Low Temperatures

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NANO-MICRO LETTERS 2025年第1期17卷 1-16页

作者： Bai, Jie Jia, Jian Hui Wang, Yu Yang, chun Cheng Jiang, Qing Jilin Univ Key Lab Automobile Mat Sch Mat Sci & Engn Minist Educ Changchun 130022 Peoples R China

Metallic nanoparticles with excellent size controllability and high loading rate are obtained via ultrafast high temperature shock *** Bi/CNRs-15 electrode exhibits an unprecedented rate performance (237.9 mAh g-1 at 2 A g-1) at - 60 degrees C, while the energy density of the full cell can reach to 181.9 Wh kg-1 at - 40 degrees C.A novel strategy of high-rate activation is proposed to obtain high capacity and superior stability at low temperature by creating new active sites for interfacial reaction. Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at - 20 degrees C or lower. However, the key capability of ultrafast charging at ultralow temperature for SIBs is rarely reported. Herein, a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue, which is synthesized via a high temperature shock method. Such a hybrid shows an unprecedented rate performance (237.9 mAh g-1 at 2 A g-1) at - 60 degrees C, outperforming all reported SIB anode materials. Coupled with a Na3V2(PO4)3 cathode, the energy density of the full cell can reach to 181.9 Wh kg-1 at - 40 degrees C. Based on this work, a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.

关键词： Bi nanoparticles High temperature shock High-rate activation Ultrafast charging Low-temperature sodium-ion batteries

Practical Timing Synchronization for Network Dynamics in Large Machine-to-Machine Networks

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China Communications 2016年第10期13卷 160-168页

作者： Lei Gu shih-chun Lin Fudan University and China Telecom Research Center Bank of Communication Ltd. the School of Electrical and Computer Engineering Georgia Institute of Technology

Efficient multi-machine cooperation and network dynamics still remain open that jeopardize great applications in largescale machine-to-machine(M2M) networks. Among all possible machine cooperation controls, to synchronize tremendous machines in a timing-efficient brings one of the greatest challenge and serves as the foundation for any other network control policies. In this paper, we propose a linear-time synchronization protocol in large M2M networks. Specifically, a closed-form of synchronization rate is provided by developing the statistical bounds of the second smallest eigenvalue of the graph Laplacian matrix. These bounds enable the efficient control of network dynamics, facilitating the timing synchronization in networks. Through a practical study in Metropolis, simulation results confirm our theoretical analysis and provide effective selection of wireless technologies, including Zigbee, Wi-Fi, and cellular systems, with respect to the deployed density of machines. Therefore, this paper successfully demonstrates a practical timing synchronization, to make a breakthrough of network dynamic control in real-world machine systems, such as Internet of Things.

关键词： timing synchronization network dynamics graph Laplacian matrix distributed protocol internet of things(IoTs) machine-to-machine(M2M) communications

Experiments on Channel Evolution Caused by Check-dam Failure

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Journal of Mountain Science 2012年第2期9卷 175-184页

作者： Wen-hsiao TSENG hsiao-Wen WANG shih-Chieh CHOU Yu-Lin KAO Chjeng-Lun Shieh Department of Hydraulic and Ocean Engineering National Cheng Kung University

A 10 m long,0.2 m wide flume was employed to simulate the channel bed evolution of check-dam *** experiment longitudinal profiles,the gradient of channel bed,head-cutting propagation distance and deposition length were compared with the theoretical solution derived from a sediment transport diffusion *** contrast with the theoretical solution,two different gradients were obtained upstream and downstream of the *** theoretical solution provides a good description of the changes upstream of the check-dam. The ratio of clear water depth to sediment moving layer thickness in the experiment was analyzed and showed that high concentration sediment laden flow was taken in the incipient of check-dam failure,which may be the reason why the experiment result was slightly different from the theoretical solution in the downstream of check-dam.

关键词： Check-dam failure Diffusion equation Debris flow

Vision-Based Learning Status Monitoring on Color and Depth Live Facial Videos

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Journal of Electronic Science and Technology 2017年第2期15卷 178-186页

作者： Ya-chun shih Mau-Tsuen Yang National Dong Hwa University Hualian 97401

This study analyzes live facial videos for recognizing nonverbal learning-related facial movements and head poses to discover the learning status of students. First, color and depth facial videos captured by a Kinect are analyzed for face tracking using a three-dimensional （3D） active appearance model （AAM）. Second, the facial feature vector sequences are used to train hidden Markov models （HMMs） to recognize seven learning-related facial movements （smile, blink, frown, shake, nod, yawn, and talk）. The final stage involves the analysis of the facial movement vector sequence to evaluate three status scores （understanding, interaction, and consciousness）, each represents the learning status of a student and is helpful to both teachers and students for improving teaching and learning. Five teaching activities demonstrate that the proposed learning status analysis system promotes the interpersonal communication between teachers and students.

关键词： Index Terms-Facial expression analysis learner status monitoring virtual English elassroom.

The Citron homology domain of MAP4Ks improves outcomes of traumatic brain injury

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Neural Regeneration Research 2025年第11期20卷 3233-3244页

作者： Xiaoling Zhong Wenjiao Tai Meng-Lu Liu Shuaipeng Ma Tianjin Shen Yuhua Zou chun-Li Zhang Department of Molecular Biology University of Texas Southwestern Medical CenterDallasTXUSA Hamon Center for Regenerative Science and Medicine University of Texas Southwestern Medical CenterDallasTXUSA Peter O’Donnell Jr.Brain Institute University of Texas Southwestern Medical CenterDallasTXUSA

The mitogen-activated protein kinase kinase kinase kinases(MAP4Ks)signaling pathway plays a pivotal role in axonal regrowth and neuronal degeneration following *** targeting this pathway is beneficial to brain injury remains *** this study,we showed that adeno-associated virus-delivery of the Citron homology domain of MAP4Ks effectively reduces traumatic brain injury-induced reactive gliosis,tauopathy,lesion size,and behavioral *** inhibition of MAP4Ks replicated the ameliorative effects observed with expression of the Citron homology ***,the Citron homology domain acted as a dominant-negative mutant,impeding MAP4K-mediated phosphorylation of the dishevelled proteins and thereby controlling the Wnt/β-catenin *** findings implicate a therapeutic potential of targeting MAP4Ks to alleviate the detrimental effects of traumatic brain injury.

关键词： adeno-associated virus Citron homology Citron homology domain gene therapy mitogen-activated protein kinase kinase kinase kinases traumatic brain injury