JOURNAL OF SCIENTIFIC RESEARCH最新文献

The Impact of Climate Change on Agriculture and Production Efficiency 气候变化对农业和生产效率的影响

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2025-10-01 DOI: 10.64102/rujssbs.0468

Mufti Mahmud, Bijoy Krishna Banik

{"title":"The Impact of Climate Change on Agriculture and Production Efficiency","authors":"Mufti Mahmud, Bijoy Krishna Banik","doi":"10.64102/rujssbs.0468","DOIUrl":"https://doi.org/10.64102/rujssbs.0468","url":null,"abstract":"Climate change is a major concern in the contemporary world, and it poses a growing threat to global agricultural production and food security. Agriculture is intrinsically sensitive to climate variability and change, whether caused by natural or human activity. This paper attempts to understand the impact of climate change on agriculture and crop productivity, with a special focus on Bangladesh. It has been written based on a systematic literature review of previous studies, published reports, climate models, and prediction data. Climate change events—higher temperatures, rise of sea level, changing rainfall patterns, salinity intrusion, land degradation, extreme weather events, and ecosystem disruption—could reduce agricultural output and impede progress toward achieving food security. Finally, the loss of agricultural production due to climate change can have an impact on the entire food supply chain, including food availability, access to resources for acquiring food, food consumption, and food stability. Therefore, there is a need to carry out such investigations to examine the impact of climate change on agricultural productivity and ensure food security for the growing population.","PeriodicalId":16984,"journal":{"name":"JOURNAL OF SCIENTIFIC RESEARCH","volume":"29 1","pages":"1-17"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147885288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust EEG-Based Emotion Recognition using CNN: A High-Accuracy Approach with Differential Entropy Features and Spatial-Frequency Domain Analysis on the SEED Dataset 基于CNN的鲁棒脑电图情绪识别：基于差分熵特征的高精度方法和SEED数据集的空间频域分析

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2025-09-01 DOI: 10.3329/jsr.v17i3.78907

A. Kotwal, M. Verma, Jasbir Singh Manhas, Vinod Sharma

{"title":"Robust EEG-Based Emotion Recognition using CNN: A High-Accuracy Approach with Differential Entropy Features and Spatial-Frequency Domain Analysis on the SEED Dataset","authors":"A. Kotwal, M. Verma, Jasbir Singh Manhas, Vinod Sharma","doi":"10.3329/jsr.v17i3.78907","DOIUrl":"https://doi.org/10.3329/jsr.v17i3.78907","url":null,"abstract":"The area of Human Emotion Recognition using EEG signals is rapidly evolving its dimensions at a more excellent pace and with time, it has become an important area of research for affective computing in the field of neuroscience. Neuro-computing has also shown its potential applications in the domain of mental health monitoring, brain-computer interface, and adaptive learning systems. The deep learning models have shown significant progress in producing effective results when implemented in analyzing different EEG signals. In this study, the efficiency of Convolutional Neural Network (CNN) models for emotion categorization is investigated on an EEG-based SEED dataset. Differential Entropy (DE) characteristics derived from five important EEG rhythms—delta, theta, alpha, beta, and gamma—are used as inputs to CNN classifiers. To enhance the performance, the model uses a two-dimensional (2D) tensor representation of the input, which allows the network to learn and use spatial correlations between different EEG channels. Experimental results show that the proposed CNN-based strategy outperforms previous methods with an average accuracy of 94.09 %. These findings highlight the potential of CNNs in developing robust and scalable solutions for EEG-based emotion recognition, providing a path for more intuitive and adaptive systems in future applications.","PeriodicalId":16984,"journal":{"name":"JOURNAL OF SCIENTIFIC RESEARCH","volume":"17 3","pages":"777-787"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.banglajol.info/index.php/JSR/article/download/78907/54583","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Glucose Functionalized Magnetic Iron Oxide Nanoparticles for Protein Detection and Separation 用于蛋白质检测和分离的葡萄糖功能化磁性氧化铁纳米粒子

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.68491

SK. Basiruddin

引用次数: 0

Fair Detour Domination in the Corona of Two Graphs: Optimizing CCTV Camera Installation for Efficient Surveillance 双图日冕中的公平迂回支配：优化 CCTV 摄像机安装，实现高效监控

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.67723

D. J. Ebenezer, J. X. Parthipan

引用次数: 0

Intensification of Sonophotocatalytic Degradation of Ponceau S using Fe - Doped and Undoped ZnO Nano Catalyst 使用掺杂铁和未掺杂氧化锌纳米催化剂强化声光催化降解庞色斯

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.65455

V. K. Mahajan, S. G. Shelar, S. P. Patil, G. Sonawane

{"title":"Intensification of Sonophotocatalytic Degradation of Ponceau S using Fe - Doped and Undoped ZnO Nano Catalyst","authors":"V. K. Mahajan, S. G. Shelar, S. P. Patil, G. Sonawane","doi":"10.3329/jsr.v16i1.65455","DOIUrl":"https://doi.org/10.3329/jsr.v16i1.65455","url":null,"abstract":"Fe-doped ZnO nano catalyst was synthesized by co-precipitation method. The intrinsic characteristics of a prepared nano Fe-doped ZnO catalyst were studied using a variety of techniques including powder X-ray diffraction (XRD), scanning electron microscope (SEM), electron dispersive X-ray spectroscopy (EDS). In this study, degradation of Ponceau S as a dye pollutant was investigated in the presence of ZnO and Fe-doped ZnO nano catalyst using sonolysis, photocatalysis, sonocatalysis and sonophotocatalysis. The UV light and ultrasonic probsonicator at 20 kHz and 150 W powers were used as an irradiation source. The effect of H2O2 on sonocatalytic, photocatalytic and sonophotocatalytic degradation was investigated. At optimum conditions the dye degradation efficiency was influenced by addition of H2O2, the highest dye degradation was obtained as 98 % by US+UV+Fe-doped ZnO+H2O2 for 40 mg/L dye concentration after 90min. The experimental kinetic data followed the pseudo-first order model in doped and undoped sonocatalytic, photocatalytic and sonophotocatalytic processes but the rate constant of sonophotocatalysis is higher than sonocatalysis and photocatalysis process. The sonophotocatalysis was always faster than the respective individual processes due to the more formation of reactive radicals as well as the increase of the active surface area of nano catalyst. ","PeriodicalId":16984,"journal":{"name":"JOURNAL OF SCIENTIFIC RESEARCH","volume":"23 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140524462","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

Study of A Ferroelectric Liquid Crystal Mesogen by Geometrical Optimization and Electro-Optic Characterization 通过几何优化和电光表征研究一种铁电液晶中间体

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.65364

D. Goswami

引用次数: 0

Mathematical Analysis of Fractional Diabetes Model via an Efficient Computational Technique 通过高效计算技术对分数糖尿病模型进行数学分析

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.66199

V. M. Batchu, V. Gill, S. Rana, Y. Singh

引用次数: 0

Numerical Solution of Cahn-Allen Equations by Wavelet Based Lifting Schemes 基于小波提升方案的卡恩-艾伦方程数值解法

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.63085

L. M. Angadi

引用次数: 0

Investigation of Site Dependent Donor-Acceptor (Al-N) Doping Effect into ZnO for Optoelectronic Applications 研究用于光电应用的 ZnO 中的位点依赖性供体-受体（Al-N）掺杂效应

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.66310

M. A. Sayed, M. Kamruzzaman, M. Liton, M. Helal, M. Rahman

{"title":"Investigation of Site Dependent Donor-Acceptor (Al-N) Doping Effect into ZnO for Optoelectronic Applications","authors":"M. A. Sayed, M. Kamruzzaman, M. Liton, M. Helal, M. Rahman","doi":"10.3329/jsr.v16i1.66310","DOIUrl":"https://doi.org/10.3329/jsr.v16i1.66310","url":null,"abstract":"In this study, the density functional theory (DFT) is used to investigate the effect of the incorporation of Al (donor) in the Zn-site and N (acceptor) in the O-site of ZnO. The detailed theoretical study highlights the confirmation of p-type conductivity and bandgap (0.58 and 0.21 eV) narrowing exhibits in N- and (Al-N)-doped ZnO systems. p-type nature is explicitly observed by introducing acceptor bands at the top of the valance band (VB). Whereas, degenerate n-type conductivity is seen in Al-doped ZnO and a widened bandgap of 2.70 eV is attributed to Burstein-Moss (BM) effect. The calculated value of the effective mass of the (Al-N)-doped ZnO system is lower than that of the un-doped ZnO. Enhancement of the absorption and photoconductivity in the visible region for N- and (Al-N)-doped ZnO could be due to the availability of more density of states. Importantly, reflectivity, refractive index, transmittance, dielectric constants, and optical band gap have also been calculated. Higher transmittance of the samples suggested that these could be suitable for the window material of solar cells. The optical bandgap value supports the electronic bandgap value. Therefore, our finding would be helpful to design high-performance homo-junction based electronic and optoelectronic devices.","PeriodicalId":16984,"journal":{"name":"JOURNAL OF SCIENTIFIC RESEARCH","volume":"6 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140525948","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

Statistical Signature and Its Theoretical Implication in Hot Jupiter Population 热木星群的统计特征及其理论意义

JOURNAL OF SCIENTIFIC RESEARCH Pub Date : 2024-01-01 DOI: 10.3329/jsr.v16i1.65299

S. Mondal

引用次数: 0