Journal of Techniques最新文献

Calcium Phosphate Coatings with Controlled Micro/Nano-Structures for Endothelial Cells Viability 具有可控微/纳米结构的磷酸钙涂层提高内皮细胞活力

Journal of Techniques Pub Date : 2024-06-02 DOI: 10.51173/jt.v6i2.2545

Adil Elrayah, Ke Duan, Xiong Lu, Xiaobo Lu, Jie Weng

{"title":"Calcium Phosphate Coatings with Controlled Micro/Nano-Structures for Endothelial Cells Viability","authors":"Adil Elrayah, Ke Duan, Xiong Lu, Xiaobo Lu, Jie Weng","doi":"10.51173/jt.v6i2.2545","DOIUrl":"https://doi.org/10.51173/jt.v6i2.2545","url":null,"abstract":"Hydroxyapatite (HA) scaffolds produced by the accumulation of HA fibers were separately treated hydrothermally in three calcium phosphate solutions to form coatings of different micro/nano-structures. Different micro/nano-structure and morphologies have been regulated on the surface of treated HA scaffolds. Plate-like compromise flower-like morphology was obtained with solution 1 (Ca-sufficient) i.e., ratio: Ca/Ca=1%; Ca/P=1.67. Full coatings (flower-like) morphology treated after Cu-doped coating solution 2 (Cu/(Cu+Ca) = 5%; ratio: (Cu+Ca)/P = 1.67). Furthermore, partial coatings (flower-like) morphology fabricated with solution 3 (Ca-deficient and Cu-replacement), i.e., ratio: Ca/Ca=0.95%; Ca/P=1.58. The results showed the effect of hydrothermal coatings on HA scaffolds. Cultured human endothelial cells spread and proliferated better on the treated HA scaffolds than on the uncoated scaffolds, suggesting a potential effect of calcium phosphate surface morphology on endothelial cell response. Thus, it can provide an appropriate micro/nano-structure approach supporting angiogenesis capacity, which is a necessity to accelerate the time of bone healing and regeneration.","PeriodicalId":516635,"journal":{"name":"Journal of Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141388925","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

Detecting Source Code Plagiarism in Student Assignment Submissions Using Clustering Techniques 利用聚类技术检测学生作业中的源代码剽窃行为

Journal of Techniques Pub Date : 2024-04-02 DOI: 10.51173/jt.v6i2.1851

Raddam Sami Mehsen, Majharoddin M. Kazi, Hiren Joshi

{"title":"Detecting Source Code Plagiarism in Student Assignment Submissions Using Clustering Techniques","authors":"Raddam Sami Mehsen, Majharoddin M. Kazi, Hiren Joshi","doi":"10.51173/jt.v6i2.1851","DOIUrl":"https://doi.org/10.51173/jt.v6i2.1851","url":null,"abstract":"In pragmatic courses, graduate students are required to submit programming assignments, which have been susceptible to various forms of plagiarism. Detecting counterfeited code in an academic setting is of paramount importance, given the prevalence of publications and papers. Plagiarism, defined as the unauthorized replication of written work without proper acknowledgment, has become a critical concern with the advent of information and communication technology (ICT) and the widespread availability of scholarly publications online. However, the extensive use of freeware text editors has posed challenges in detecting source code plagiarism. Numerous studies have investigated algorithms for revealing different types of plagiarism and detecting source code plagiarism. In this research, we propose an innovative strategy that combines TF-IDF (Term Frequency-Inverse Document Frequency) modifications with K-means clustering, achieving a remarkable precision rate of 99.2%. Additionally, we explore the hierarchical clustering method, which estimates an even higher precision rate of 99.5% compared to previous techniques. To implement our approach, we utilize the Python programming language along with relevant libraries, providing a robust and efficient system for source code plagiarism detection in student assignment submissions.","PeriodicalId":516635,"journal":{"name":"Journal of Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140753335","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

Image-Based Face Recognition Techniques Used in Disease Detection Approaches: A Survey 疾病检测方法中使用的基于图像的人脸识别技术：调查

Journal of Techniques Pub Date : 2024-01-20 DOI: 10.51173/jt.v6i1.1966

Ghalib Ahmed Salman, Inas Jawad Kadhim, Ahmed Husham Al-Badri

{"title":"Image-Based Face Recognition Techniques Used in Disease Detection Approaches: A Survey","authors":"Ghalib Ahmed Salman, Inas Jawad Kadhim, Ahmed Husham Al-Badri","doi":"10.51173/jt.v6i1.1966","DOIUrl":"https://doi.org/10.51173/jt.v6i1.1966","url":null,"abstract":"Facial diseases lead to noticeable changes on the human face, and some of them extend beyond internal effects or organ-based disorders. Indeed, certain types of facial diseases result in visually noticeable abnormalities on the human face. These alterations in facial patterns can serve as potential indicators for corresponding diseases, particularly in the fields of endocrinology and metabolism, Muscles-Nervous disorders, Chromosomes, and Genetic disorders, among others. Technologies used in Face Recognition (FR) have been developed over the past few decades; however, only a limited amount of research has been applied in recent years to FR-based disease detection for clinical purposes. FR applications relying on Artificial Neural Network (ANN) techniques have recorded higher accuracy rates in diagnosing facial diseases. This field of recognition holds promising potential for optimizing facial diagnosis approaches and supporting medical staff in evaluating detections. In practice, only a few research ideas have been translated into medical products, emphasizing the need to identify and integrate future applications. As a primary focus, this paper centers on the key applications and technologies for detecting various types of facial diseases, along with a discussion of prospects.","PeriodicalId":516635,"journal":{"name":"Journal of Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140501430","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

Power Loss Reduction and Reliability Improvement of Radial Distribution Systems Using Optimal Capacitor Placement Technique 利用最佳电容器布置技术降低径向配电系统的功率损耗并提高其可靠性

Journal of Techniques Pub Date : 2024-01-20 DOI: 10.51173/jt.v6i1.1215

Mohanad Muneer Yaqoob, Ali Nasser Hussain, W. Abed, Daniel Augusto Pereira

引用次数: 0

Smart Patch for Non-Invasive Blood Pressure Monitoring in Epileptic Seizure Patients via the Sole 通过足部对癫痫发作患者进行无创血压监测的智能贴片

Journal of Techniques Pub Date : 2024-01-20 DOI: 10.51173/jt.v6i1.1624

Murtadha Mohammed Mahdi, Sadik Kamel Gharghan, Saleem Lateef Mohammed, Ibrahim Amer Ibrahim

{"title":"Smart Patch for Non-Invasive Blood Pressure Monitoring in Epileptic Seizure Patients via the Sole","authors":"Murtadha Mohammed Mahdi, Sadik Kamel Gharghan, Saleem Lateef Mohammed, Ibrahim Amer Ibrahim","doi":"10.51173/jt.v6i1.1624","DOIUrl":"https://doi.org/10.51173/jt.v6i1.1624","url":null,"abstract":"Epileptic seizures can cause sudden blood pressure changes, requiring continuous monitoring. However, traditional blood pressure monitoring methods are often invasive and uncomfortable for the patient. In addition, it is difficult to measure blood pressure during seizures. This research aims to design a non-invasive, comfortable device to monitor blood pressure during epileptic seizures continuously. Photoplethysmography (PPG) signals from the sole of the patient's foot were used to extract blood pressure data. A smart patch was designed to be worn comfortably on foot for continuous monitoring during seizures. The results show that the average systolic and diastolic blood pressure errors were 2.838 and 4.494 mmHg during epileptic seizures, respectively. These blood pressure changes could be related to the onset of seizures, suggesting that the device and methodology could be combined with other measures to analyze and predict seizure activity. This research offers a non-invasive and comfortable solution for continuous blood pressure monitoring during seizures, which may affect seizure prediction and management.","PeriodicalId":516635,"journal":{"name":"Journal of Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139640427","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 the Impact Irregular Concrete Facilities with the Shear Walls Based: The Effect of Soil-Structure Interaction with ABAQUS Software 基于剪力墙的冲击不规则混凝土设施研究：使用 ABAQUS 软件研究土与结构相互作用的影响

Journal of Techniques Pub Date : 2024-01-20 DOI: 10.51173/jt.v6i1.1654

Wisam Fawzi Aljuhaishi, Javad Esfandiari

{"title":"Study of the Impact Irregular Concrete Facilities with the Shear Walls Based: The Effect of Soil-Structure Interaction with ABAQUS Software","authors":"Wisam Fawzi Aljuhaishi, Javad Esfandiari","doi":"10.51173/jt.v6i1.1654","DOIUrl":"https://doi.org/10.51173/jt.v6i1.1654","url":null,"abstract":"In the present study, the effect of irregularity of structures of the concrete with special shear walls has been analyzed and modeled by considering the effect of soil-structure interaction by dynamic analysis method with ABAQUS software. The results are presented in the form of diagrams with different soil interaction conditions, the effect of the number of layers was investigated for different soils. The results showed that the bearing system of the flexural frame and the concrete shear wall under the lateral load of the earthquake have good strength and ductility, which makes this issue. This structural system should be used for cities with very high earthquake risk. As the number of floors increases, the effect of the shear walls on increasing the bearing capacity decreases. As the number of floors increases, the final displacement of the frame increases. The results showed that for soil type 1(hard soil which Vs=1000 m/s, v=0.15, q=50000 Kg/m2, P=2000 Kg/m3, r=0.5 m) structural system of concrete shear walls with better displacement, maximum structural stiffness, better behavior was observed in the structure. Three-story frame with concrete shear wall has a significant increase compared to similar frames with more floors, which shows the good performance of this system in structures with fewer floors.","PeriodicalId":516635,"journal":{"name":"Journal of Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140502200","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

Optimization of Neurons Number in Artificial Neural Network Model for Predicting the Power Production of PV Module 用于预测光伏组件发电量的人工神经网络模型中神经元数量的优化

Journal of Techniques Pub Date : 2024-01-20 DOI: 10.51173/jt.v6i1.895

Hussain Hamdi Khalaf, Ali Nasser Hussain, Zuhair S. Al-Sagar, Abdulrahman Th. Mohammad, Hilal A. Fadhil

{"title":"Optimization of Neurons Number in Artificial Neural Network Model for Predicting the Power Production of PV Module","authors":"Hussain Hamdi Khalaf, Ali Nasser Hussain, Zuhair S. Al-Sagar, Abdulrahman Th. Mohammad, Hilal A. Fadhil","doi":"10.51173/jt.v6i1.895","DOIUrl":"https://doi.org/10.51173/jt.v6i1.895","url":null,"abstract":"In this work, an Artificial Neural Network (ANN) with a backward-propagation technique was used to predict the power generation of the Photovoltaic (PV) module in weather conditions of Baghdad city-Iraq. Experiment tests were investigated in the summer of 2022. Three weather parameters, including: (solar radiation, ambient temperature, and wind speed), the output electrical characteristics of the PV module (voltage, current, power), and module temperature (were measured. Therefore, the dataset of the ANN system consists of four input and one output parameter. Furthermore, the structure of ANN includes a single hidden layer with a backward propagation technique. The main goal of this study was to optimize the number of neurons in the training process. The evaluation of the ANN model depended on the determination coefficient (R) and Root Mean Squared Error (RMSE). The obtained results show that the architecture of ANN is appropriate for predicting the power generated from the PV module. The developed ANN model has good accuracy. Where the MSE is 0.002747 at epoch 9 in the model. Furthermore, the R is recorded as 0.99078, 0.98254, 0.99125, and 0.99005 for training, testing, validation, and all respectively in the proposed model. In addition, the optimization number of neurons in the hidden layer gave sufficient accuracy without referring to the choice of the number of neurons by using the trial-and-error method that most researchers relied.","PeriodicalId":516635,"journal":{"name":"Journal of Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140502297","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

Influence of Welding Parameters on Mechanical Properties and Microstructure of Similar Low-Carbon Steel AISI 1005 Welding by Resistance Spot Welding 焊接参数对电阻点焊类似低碳钢 AISI 1005 的力学性能和显微组织的影响

Journal of Techniques Pub Date : 2024-01-20 DOI: 10.51173/jt.v6i1.2114

Osamah Sabah Barrak, Sami Chatti, Slim Ben-Elechi

引用次数: 0