Journal of Current Science and Technology最新文献_第6页

Nonparametric Bootstrap Confidence Intervals for the Population Mean of a Zero-Truncated Poisson-Lindley Distribution and Their Application 零截断泊松-林德利分布总体均值的非参数Bootstrap置信区间及其应用

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.1077

Wannaphon Suriyakat, W. Panichkitkosolkul

{"title":"Nonparametric Bootstrap Confidence Intervals for the Population Mean of a Zero-Truncated Poisson-Lindley Distribution and Their Application","authors":"Wannaphon Suriyakat, W. Panichkitkosolkul","doi":"10.59796/jcst.v13n3.2023.1077","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.1077","url":null,"abstract":"Recently, the zero-truncated Poisson-Lindley distribution has been proposed for studying count data containing non-zero values. However, the nonparametric bootstrap confidence interval estimation of the population mean has not yet been studied. In this study, confidence interval estimation based on percentile, simple, and biased-corrected bootstrap methods was compared in terms of coverage probability and average interval length via Monte Carlo simulation. The true values of parameter () were set as 0.25, 0.5, 1, 1.5, and 2, and the population means are approximate 7.7586, 4.0909, 2.4000, 1.8817, and 1.6364, respectively. The bootstrap samples (=1,000) of size were generated from the original sample, and each simulation was repeated 1,000 times. The results indicate that attaining the nominal confidence level using the bootstrap confidence intervals was impossible for small sample sizes regardless of the other settings. Moreover, when the sample size was large, the performance of the nonparametric bootstrap confidence intervals was not substantially different. Overall, the bias-corrected bootstrap confidence interval outperformed the others, even for small sample sizes. Last, the nonparametric bootstrap confidence intervals were used to calculate the confidence interval for the population mean of the zero-truncated Poisson-Lindley distribution via two numerical examples, the results of which match those from the simulation study.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83321462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting Elderly Falls Using the Roll Factor in the "Smart Walk Trainer" Equipment for Body Weight-Balance Analysis 利用“智能步行训练器”设备的滚动系数预测老年人跌倒，进行体重平衡分析

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.978

Kedsara Rakpongsiri, Kwanchai Srisurak, P. Rakpongsiri

{"title":"Predicting Elderly Falls Using the Roll Factor in the \"Smart Walk Trainer\" Equipment for Body Weight-Balance Analysis","authors":"Kedsara Rakpongsiri, Kwanchai Srisurak, P. Rakpongsiri","doi":"10.59796/jcst.v13n3.2023.978","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.978","url":null,"abstract":"The imbalanced posture of the body is a potential risk of accidents in all ages that can be caused by a variety of reasons, including muscle weakness, aging-related deterioration in balance, or neurological problems, possibly see more problem for the elderly. Knowing the weight-bearing condition would be helpful to improve balance of the body to prevent the risk. The “Smart Walk Trainer” equipment has been developed for analyzing the imbalance weight-bearing conditions of both standing and walking manner. It consists of \"Force Sensitive Resistor\" (FSR) sensors to measure the weight-bearing of the foot, the controlling and processing system of the NI USB-6009 multifunction I/O hardware, and LabVIEW software. The study using this equipment aims to examine the differences between young and elderly subjects in terms of weight-bearing and balance assessment. The result showed the roll_factor of the elderly deviated greatly from the balance point (Right: Mean = -0.72, SD = 1.4; Left: Mean=0.78, SD=1.41) when compared to the young subjects (Right: Mean = 0.01, SD = 0.56; Left: Mean=-0.19, SD = 0.49) which corresponded to the risk of falling in the elderly. The equipment also provides specialists with enhanced clarity regarding weight distribution patterns, enabling them to identify any abnormalities and then provide targeted exercise recommendations to strengthen specific muscles and promote improved balance for fall prevention.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87358960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficacy of Vegetable Crude Extracts to Inhibit Bacteria, Exiguobacterium indicum 植物粗提物抑菌效果研究

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.865

Punika Chaisemsaeng, Dechawut Bunyaluk, P. Nanthanawat, J. Nanuam, Witchuda Prasatkaew, Poangpetch Phimchan, Wilaiporn Insuwan, A. Wattanakornsiri, C. Thanomsit

{"title":"Efficacy of Vegetable Crude Extracts to Inhibit Bacteria, Exiguobacterium indicum","authors":"Punika Chaisemsaeng, Dechawut Bunyaluk, P. Nanthanawat, J. Nanuam, Witchuda Prasatkaew, Poangpetch Phimchan, Wilaiporn Insuwan, A. Wattanakornsiri, C. Thanomsit","doi":"10.59796/jcst.v13n3.2023.865","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.865","url":null,"abstract":"Crude vegetable extracts are very interesting to study and then applied to inhibit bacteria. In this study, we obtained crude extracts from vegetable wastes, including yard-long bean leaf, pumpkin peel, and Chinese kale leaf, and studied their efficacies of those crude extracts to inhibit the bacteria, and investigated their phytochemicals using Gas chromatography-mass spectrometry. The efficacy of the crude vegetable extracts in inhibiting bacteria was evaluated based on the size of the inhibition zone. The results showed that the pathogenic bacteria isolated from the infected Nile tilapia fish was Exiguobacterium indicum presenting yellow colony. This species showed the highest inhibition activity at 15.33 mm from Chinese kale leaf crude extract. After testing antibacterial activity, crude extract from Chinese kale leaf had the highest antibacterial efficiency; however, there was no significant difference (P>0.05) with yard-long bean leaf extract. Phytochemical studies of all three vegetable wastes showed that crude extracts from Chinese kale leaves and yard-long bean leaves contained high quantities of 3,7,11,15-Tetramethyl-2-hexadecen-1-ol Phytol, 9,12,15-Octadecatrienoic acid, (Z,Z,Z)-, Butyl 9,12,15-octadecatrienoate, and Ethyl 9,12 ,15-octadecatrienoate in high quantity to antimicrobials, which are antimicrobials. In contrast, upon studying the phytochemical compounds, it was found that the crude extracts from yard-long bean leaves contained the highest number of various compounds. This study indicated that the crude extracts from Chinese kale leaf and yard-long bean leaf can be applied in preventing pathogenic bacteria in aquaculture, especially Nile tilapia fish","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73610855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Histological Features of Cerebral Arteries and Brain Parenchyma in Cadavers Who Had Died from Hemorrhagic Stroke 出血性中风死亡尸体脑动脉和脑实质的组织学特征

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.768

Pornnarez Thaweekhotr, Chanida Thongsopha, P. Sudwan, Kanokkan Bumroongkit, Kewalee Seeharach, Chatchadaporn Jaiyen, Patipath Suannahoy, Noppadol Phasukdee, Ranida Quiggins

{"title":"Histological Features of Cerebral Arteries and Brain Parenchyma in Cadavers Who Had Died from Hemorrhagic Stroke","authors":"Pornnarez Thaweekhotr, Chanida Thongsopha, P. Sudwan, Kanokkan Bumroongkit, Kewalee Seeharach, Chatchadaporn Jaiyen, Patipath Suannahoy, Noppadol Phasukdee, Ranida Quiggins","doi":"10.59796/jcst.v13n3.2023.768","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.768","url":null,"abstract":"Cerebral atherosclerosis is a risk factor for stroke. Several contents in the atheromatous plaque have been identified, but some have not yet been quantified. This is especially true for lipids. This study aims to compare the histology, vascular wall contents of the cerebral artery ipsilateral to the hemorrhagic lesion, and hemorrhagic parenchyma to that of the contralateral and the control. The A1, M1, and P1 segments of cerebral arteries from twelve stroke cadavers and those from eight control cadavers were used in this study. All segments were prepared for H&E, Sudan black B, trichrome, and modified Verhoeff’s Van Gieson stains and were then analyzed for vascular parameters, lipid area, collagen area, and elastic density, respectively. The results show that the wall areas of A1 and P1 ipsilateral to hemorrhagic lesions were significantly larger than those of the contralateral. The areas of the vascular lumen of M1 ipsilateral and contralateral to the hemorrhagic lesion were significantly smaller than that of the control. The largest lipid area was found in the ipsilateral M1 among the three groups. The collagen area in the ipsilateral M1 was significantly larger than that of the control. Finally, the elastic fibers in all ipsilateral segments had significantly less density than that of the control. The nervous parenchyma contralateral to the hemorrhage was shown to be an impaired tissue. In conclusion, high accumulations of lipids and collagen, along with low elastic density in the ipsilateral M1, might have reduced the size of its lumen and its flexibility, potentially resulting in a hypertensive hemorrhage.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83347062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Plasticizers on Characterization of Biodegradable Film Based on Tamarind Kernel Polysaccharide 增塑剂对罗望子仁多糖生物降解膜性能的影响

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.814

P. Suwanamornlert, Takunrat Taksima, Pongsura Thanyacharoen-anukul

{"title":"Effects of Plasticizers on Characterization of Biodegradable Film Based on Tamarind Kernel Polysaccharide","authors":"P. Suwanamornlert, Takunrat Taksima, Pongsura Thanyacharoen-anukul","doi":"10.59796/jcst.v13n3.2023.814","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.814","url":null,"abstract":"Tamarind kernel polysaccharide-based film was formulated to study the effects of polyethylene glycol 400, glycerol, sorbitol, tween 80, tween 40, tween 20 and span 20 on mechanical, optical, and thermal properties. Addition of plasticizers to tamarind kernel polysaccharide led to changes in tensile strength, elastic modulus, and elongation at break of the films. The tensile strength of films containing polyethylene glycol 400, glycerol, sorbitol, tween 20 and span 20 was lower than films containing tween 80, tween 40 and non-plasticized film. Sorbitol-plasticized film exhibited the best mechanical properties with lowest tensile strength, 6.07 MPa and highest elongation at break 5.91%. Film containing sorbitol also showed highest optical transparency, while polyethylene glycol 400 and glycerol exhibited lowest transparency and highest whiteness index. Differential scanning calorimetry (DSC) revealed that incorporation of plasticizers increased the mobility of the polymer chains. The addition of sorbitol, glycerol, and tween 20 reduced the glass transition temperature of tamarind kernel polysaccharide film from 49.81 to 20.97, 42.41 and 42.92 °C, respectively. Sorbitol proved to be an effective plasticizer for improving flexibility and enhancing the optical property of tamarind kernel polysaccharide film. As a result of the research, it was discovered that tamarind kernel polysaccharide film plasticized with sorbitol has the potential to be used in the creation of biopolymer film for culinary and biomedical applications.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87463384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative prey predation ability of big-eyed bug Geocoris ochropterus (Fieber) (Hemiptera: Geocoridae) 大眼蝽的捕食能力比较(半翅目:大眼蝽科)

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.1307

Nguyen Ngoc Bao Chau, Nguyen Thi Phung Kieu

引用次数: 0

A Deep Learning Approach for Human Facial Expression Recognition using Residual Network – 101 基于残差网络的人脸表情识别深度学习方法- 101

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.2152

R. Kumari, Javed Wasim

{"title":"A Deep Learning Approach for Human Facial Expression Recognition using Residual Network – 101","authors":"R. Kumari, Javed Wasim","doi":"10.59796/jcst.v13n3.2023.2152","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.2152","url":null,"abstract":"Emotion recognition is a dynamic process that focuses on a person's emotional state, which implies that the emotions associated with each individual's activities are unique. Human emotion analysis and recognition have been popular study areas among computer vision researchers. High dimensionality, execution time, and cost are the main difficulties in human emotion detection. To deal with these issues, the proposed model aims to design a human emotion recognition model using Residual Networks-101 (ResNet-101). A Convolutional Neural Network (CNN) design called ResNet-101 solves the vanishing gradient issue and makes it possible to build networks with thousands of convolutional layers that outperform networks with fewer layers. An image dataset was used for this emotion recognition. Then, this image dataset was subjected to preprocessing to resize the image and eliminate the noise contents present in the images. After preprocessing, the image was given to the classifier to recognize the emotions effectively. Here, ResNet-101 was used for the classification of six classes. The experimental results demonstrate that ResNet-101 models outperform the most recent techniques for emotion recognition. The proposed model was executed in MATLAB software and carried out several performance metrics. The proposed architecture attained better performance in terms of accuracy 92% and error with 0.08 and other performances like 92% of precision, 85% of specificity and 98% of sensitivity so on, and this shows the effectiveness of the proposed model to existing approaches such as LeNet, AlexNet and VGG. In comparison to current techniques, the suggested model provides improved recognition accuracy for low intensity or mild emotional expressions.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87208306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GC-MS analysis, Antioxidant Activity and Antimicrobial Activity of Kaffir Lime (Citrus hystrix DC.) and Key Lime (Citrus aurantifolia (Christm.) Swingle.) Peel Essential Oils 酸橙(Citrus hystrix DC.)和酸橙(Citrus aurantifolia (Christm.))抗氧化和抗菌活性的GC-MS分析击打)。果皮精油

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.888

S. Thonglem, Pemika Khumweera, Narongrit Lahpun

引用次数: 0

Pseudomonas aeruginosa SWUC02 Cell-Free Culture as a Potential Antimicrobial Agent Against Household Antibiotics-Resistant Staphylococcus aureus 铜绿假单胞菌SWUC02无细胞培养作为家庭耐药金黄色葡萄球菌的潜在抗菌剂

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.1349

Kotchanat Srisangchun, Angkana Yoopom, Rasiyakapat Boonyangchanichkul, P. Aungpraphapornchai, Kwannan Nantavisai, O. Pringsulaka, S. Sarawaneeyaruk

{"title":"Pseudomonas aeruginosa SWUC02 Cell-Free Culture as a Potential Antimicrobial Agent Against Household Antibiotics-Resistant Staphylococcus aureus","authors":"Kotchanat Srisangchun, Angkana Yoopom, Rasiyakapat Boonyangchanichkul, P. Aungpraphapornchai, Kwannan Nantavisai, O. Pringsulaka, S. Sarawaneeyaruk","doi":"10.59796/jcst.v13n3.2023.1349","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.1349","url":null,"abstract":"Contamination of household environments with pathogenic bacteria poses a significant risk of foodborne illnesses. This study aimed to investigate the effectiveness of cell-free culture obtained from Pseudomonas aeruginosa SWUC02 (CF-SWUC02) against Staphylococcus aureus, a common pathogen associated with food poisoning outbreaks. The antagonistic activity of P. aeruginosa SWUC02 and CF-SWUC02 against various pathogenic bacteria, particularly S. aureus, was assessed. The active antimicrobial compounds produced by P. aeruginosa SWUC02 demonstrated resistance to protease enzymes and high temperatures. Optimal culture conditions for inhibiting S. aureus were determined as LB media supplemented with 0.01% CuCl2, inoculated with 1x105 CFU.mL-1 of P. aeruginosa SWUC02, and incubated at 32°C with agitation (100 rpm) for 12 days. Eighty-six S. aureus isolates were collected from household environments and tested for antibiotic resistance, with 55 isolates exhibiting resistance to penicillin, and 17 isolates were identified as methicillin-resistant S. aureus (MRSA). CF-SWUC02 demonstrated inhibitory effects against all S. aureus isolates, including MRSA. In conclusion, CF-SWUC02 displayed antagonistic activity against drug resistant S. aureus, suggesting its potential as a valuable resource for combating these pathogens. Furthermore, the presence of heat and protease stable antimicrobial compounds in CF-SWUC02 highlights the need for further investigation to explore their potential applications in the field of antimicrobial research.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76483301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Storage System Owner as a New Player in an Electricity Structure 储能系统所有者作为电力结构中的新参与者

Journal of Current Science and Technology Pub Date : 2023-08-30 DOI: 10.59796/jcst.v13n3.2023.1143

N. Petcharaks, Keerati Chayakulkeeree, S. Nirukkanaporn, Patch Nantivatana

{"title":"Energy Storage System Owner as a New Player in an Electricity Structure","authors":"N. Petcharaks, Keerati Chayakulkeeree, S. Nirukkanaporn, Patch Nantivatana","doi":"10.59796/jcst.v13n3.2023.1143","DOIUrl":"https://doi.org/10.59796/jcst.v13n3.2023.1143","url":null,"abstract":"Daily load demand causes different marginal cost at each hour due to different operation generation units. During peak load period, expensive generation units are determined to be turned on to provide sufficient electricity supply and sufficient spinning reserve. During light load period, generation units could not be unloaded due to their minimum up/down time, startup time and startup cost, causing uneconomic operation of the generating capacities. This excess capacity during light load period can be stored in the energy storage system (ESS) and the power can be released to supply the peak load demand hours to avoid turning on the next expensive unit which resulted in higher marginal cost. Performing as virtual power plant (VPP), ESS owners can seek for market opportunities to enter electric supply industry. This paper aims for proposing an optimal operation of VPP with charging/discharging ESS plan when marginal cost identifies real-time pricing (RTP) at each hour to be used as buying/selling price to VPP. Under strategically charging/discharging scheme, both parties, i.e., utility, and VPP, can achieve benefits in terms of better economic operation, lower system generation cost, increase operational income, while environmental impact is considered. The proposed method is tested on a ten-unit system under a centralized power market structure. Numerical results show that appropriate charging/discharging strategy could provide lower total production cost and offer opportunities for ESS owners as VPPs to obtain arbitrage marginal cost.","PeriodicalId":36369,"journal":{"name":"Journal of Current Science and Technology","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89838628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0