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Le Hoang Anh(레황안),Soo-Chang Lee(이수창),Gwang-Hyun Yu(유광현),Jin-Young Kim(김진영) 한국디지털콘텐츠학회 2024 한국디지털콘텐츠학회논문지 Vol.25 No.1
ChronoPatternNet revolutionizes power forecasting using a unique 2D convolutional approach for advanced temporal pattern recognition. The chronocycle hyperparameter, optimized via fast Fourier transform, structures Cyclical Time Frames, enhancing both extraction and prediction accuracy. Integration of layer normalization and residual learning mitigates the vanishing gradient problem, ensuring stability. With superior efficiency, ChronoPatternNet achieves a reduction in the number of parameters ranging from 58.8% to 61.9% compared to existing models. This positions ChronoPatternNet as a significant advancement in real-time energy management.
Diluents and Cryoprotectants for Cryopreservation of Filefish Thamnaconus modestus Sperm
Le, Minh-Hoang,Lim, Han-Kyu,Min, Byung-Hwa,Son, Maeng-Hyun,Lee, Jung-Uie,Chang, Young-Jin The Korean Society of Fisheries and Aquatic Scienc 2008 韓國養殖學會誌 Vol.21 No.1
The present study aimed to find the best diluent and cryoprotectant for sperm cryopreservation of filefish Thamnaconus modestus. Two kinds of artificial seminal plasma(ASP1, ASP2), 0.3 M glucose and marine fish Ringer's solution(MFRS) were employed as diluent. Dimethyl sulfoxide(DMSO) and methanol as cryoprotectant were selected for sperm cryopreservation. Sperm was diluted at the ratio of 1:3 with diluents containing cryoprotectants and adjusted for final concentration at 5%, 10%, 15% and 20%. Mixed milt was frozen at liquid nitrogen vapor after equilibration for 5 min. The highest motility($40.5{\pm}2.8%$) and swimming speed($81.5{\pm}4.1{\mu}m/s$) of frozen/thawed sperm were observed in ASP1 diluent containing 10% DMSO and in ASP2 containing 15% DMSO, respectively. Results showed that cryopreservation with ASP as diluent and DMSO as cryoprotectant could be adopted for long term storage of filefish sperm.
LE, Hoang Ba Huyen,NGO, Chi Thanh,TRINH, Thi Thu Huyen,NGUYEN, Thi Thu Phuong Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.2
The article aims to identify the main factors affecting customers' decision to use mobile banking service in Vietnam, a case study in Thanh Hoa province. Based on theoretical frameworks of the Technology Acceptance Model (TAM) and the Unified Theory of Acceptance and Use of Technology (UTAUT), the study has been conducted with 370 questionnaires to consumers who have not yet used and are currently using mobile banking in Thanh Hoa province. The research results indicates that several factors have been evaluated to be more important than others, of which, the social influence is the strongest, the second is the compatibility and some others factors such as perceived ease of use, perceived trust, etc., all affecting the intention to use mobile banking in Thanh Hoa. Based on these important results, the article propose a number of recommendations: (i) Exploiting the advantages of social influence on the increase of intention to use; (ii) Increasing compatibility and minimizing costs for customers when they use Mobile Banking; (iii) Developing a strategy to increase the users' perceived ease of using banking services; (iv) Issuing a policy on increasing the security of Mobile Banking system to meet customers' needs; and (v) Developing an individual customer management system to improve service quality.
Evaluation of axial strength in circular STCC columns using UHPC and UHPFRC
Le Hoang, An,Fehling, Ekkehard,Thai, Duc-Kien,Van Nguyen, Chau Elsevier 2019 Journal of constructional steel research Vol.153 No.-
<P><B>Abstract</B></P> <P>This study investigates the axial strength of circular steel tube confined concrete (STCC) columns with the employment of plain ultra high performance concrete (UHPC) and ultra high performance fiber reinforced concrete (UHPFRC) having compressive strengths of cylinders varying from 178.9 MPa and 198 MPa. UHPFRC used in this study had 1% and 2% volume fraction of steel fibers in the mixture. Eighteen specimens including both short and intermediate columns were cast and tested under concentric loading on the concrete core to generate the maximal confinement effect. Experimental results showed that the effect of steel fibers on the axial load versus axial strain responses, and on the enhancement of strength and ductility was insignificant, while the parameters of the steel tube and the concrete core length were found to play a major role. The ultimate loads of the tests presented herein were compared with those obtained from the predictions by seven analytical models and five existing design codes. The design expressions from these analytical models and codes were assessed. For the prediction of the ultimate loads of both short and intermediate column, the model by De Oliveira et al. [] was the most suitable approach among seven selected models, whereas the ACI provision [] was the best among five existing design codes. Furthermore, the experimental ultimate loads obtained from this study were combined with those from previous studies to examine the influence of different concrete strength ranges on the strength enhancement. Finally, unified formulae to predict the ultimate strength with a wide range of concrete strength up to 200 MPa were also proposed for both short and intermediate columns.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Tests on 18 circular STCC columns using UHPC and UHPFRC with compressive strength up to 200 MPa were conducted to evaluate the axial strength. </LI> <LI> The accuracy of seven analytical models and five existing design codes in prediction of the ultimate strength was assessed. </LI> <LI> The effect of concrete strength ranges including NSC, HSC, UHPC and UHPFRC on the strength enhancement of circular STCC columns was identified. </LI> <LI> The unified formulae for predicting the confined peak stress (<I>f</I> <SUB> <I>cc</I> </SUB>) and the ultimate load (<I>N</I> <SUB> <I>u</I> </SUB>) of circular STCC columns were proposed. </LI> </UL> </P>
Disruption of Ninjurin1 Leads to Repetitive and Anxiety-Like Behaviors in Mice
Le, Hoang,Ahn, Bum Ju,Lee, Hye Shin,Shin, Anna,Chae, Sujin,Lee, Sung Yi,Shin, Min Wook,Lee, Eun-Ji,Cha, Jong-Ho,Son, Taekwon,Seo, Ji Hae,Wee, Hee-Jun,Lee, Hyo-Jong,Jang, Yongwoo,Lo, Eng H.,Jeon, Sejin Humana Press 2017 Molecular Neurobiology Vol. No.
<P>Over the last few decades, molecular neurobiology has uncovered many genes whose deficiency in mice results in behavioral traits associated with human neuropsychiatric disorders such as autism, obsessive-compulsive disorder (OCD), and schizophrenia. However, the etiology of these common diseases remains enigmatic with the potential involvement of a battery of genes. Here, we report abnormal behavioral phenotypes of mice deficient in a cell adhesion molecule Ninjurin 1 (Ninj1), which are relevant to repetitive and anxiety behaviors of neuropsychiatric disorders. Ninj1 knockout (KO) mice exhibit compulsive grooming-induced hair loss and self-made lesions as well as increased anxiety-like behaviors. Histological analysis reveals that Ninj1 is predominantly expressed in cortico-thalamic circuits, and neuron-specific Ninj1 conditional KO mice manifest aberrant phenotypes similar to the global Ninj1 KO mice. Notably, the brains of Ninj1 KO mice display altered synaptic transmission in thalamic neurons as well as a reduced number of functional synapses. Moreover, the disruption of Ninj1 leads to glutamatergic abnormalities, including increased ionotropic glutamate receptors but reduced glutamate levels. Furthermore, chronic treatment with fluoxetine, a drug reportedly ameliorates compulsive behaviors in mice, prevents progression of hair loss and alleviates the compulsive grooming and anxiety-like behavior of Ninj1 KO mice. Collectively, our results suggest that Ninj1 could be involved in neuropsychiatric disorders associated with impairments of repetitive and anxiety behaviors.</P>
The Effects of Economic Freedom on Firm Investment in Vietnam
LE, Anh Hoang,KIM, Taegi Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.3
This paper investigates how economic freedom affected firm investment in Vietnam. In the globalization decade, economic freedom has been an important policy to support economic development in Vietnam. Improvements in economic freedom, such as capital freedom and domestic credit freedom, allow firms to access external finance more easily, so that the firm's investment depends less on internal cash flow. In a developing country, on the drawbacks, many small and medium firms likely have more challenges if the government would not give any subsidies. The higher level of freedom may exacerbate the financing constraints of less competitive firms. We analyze unique firm-level data from 2006 to 2016, which includes listed firms on two major stock exchanges and unlisted firms in the Unlisted Public Company Market. The article also considers how economic freedom affects small firms and large firms differently. Our results show that capital freedom and domestic credit freedom played an important role in investments for Vietnamese firms. However, we cannot find evidence that overall economic freedom relaxed the financial constraints on firms. Additionally, we suggest that small firms likely gain more advantage in access to external finance than do larger firms when the government removes restrictions from capital movement and the domestic credit market.