MethodsX最新文献_第3页

Automated prediction of phosphorus concentration in soils using reflectance spectroscopy and machine learning algorithms 利用反射光谱学和机器学习算法自动预测土壤中的磷浓度

IF 1.6

MethodsX Pub Date : 2024-10-15 DOI: 10.1016/j.mex.2024.102996

Fabio Eliveny Rivadeneira-Bolaños , Sandra Esperanza Nope-Rodríguez , Martha Isabel Páez-Melo , Carlos Rafael Pinedo-Jaramillo

{"title":"Automated prediction of phosphorus concentration in soils using reflectance spectroscopy and machine learning algorithms","authors":"Fabio Eliveny Rivadeneira-Bolaños , Sandra Esperanza Nope-Rodríguez , Martha Isabel Páez-Melo , Carlos Rafael Pinedo-Jaramillo","doi":"10.1016/j.mex.2024.102996","DOIUrl":"10.1016/j.mex.2024.102996","url":null,"abstract":"<div><div>A method is presented for predicting total phosphorus concentration in soils from Santander de Quilichao, Colombia, using a UV-VIS V-750 Spectrophotometer and machine learning techniques. A total of 152 soil samples, prepared with varying proportions of P<sub>2</sub>O<sub>5</sub> fertilizer and soil, were analyzed, obtaining reflectance spectra in the 200 to 900 nm range with 3501 wavelengths. Additionally, 152 laboratory results of total phosphorus concentration were used to train the prediction model. The spectra were filtered using a Savitzky-Golay filter. Key wavelengths were identified using Variable Importance in Projection - Partial Least Squares (VIP-PLS) and Random Forest (RF), reducing the spectral bands to 1085. Principal Component Analysis (PCA) further reduced data dimensionality. A feedforward artificial neural network was then trained to predict phosphorus concentration. This method is faster than traditional lab tests by leveraging advanced data analysis and machine learning, offering results in less time. While sample preparation remains consistent with standard spectroscopic analysis, the value added by the proposed method lies in its data processing and interpretation. Currently applied to a single soil type, future improvements will include more soil types and other macronutrients, enhancing nutrient management in agriculture. Accurate macronutrient measurements aid in better fertilizer uses planning.</div><div>• Filtering spectra and determining relevant wavelengths using VIP-PLS and RF.</div><div>• Dimensionality reduction with PCA.</div><div>• Training feedforward artificial neural networks.</div></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":"13 ","pages":"Article 102996"},"PeriodicalIF":1.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529065","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

A method to improve binary forecast skill verification 改进二进制预报技能验证的方法。

IF 1.6

MethodsX Pub Date : 2024-10-15 DOI: 10.1016/j.mex.2024.103010

Thitithep Sitthiyot , Kanyarat Holasut

{"title":"A method to improve binary forecast skill verification","authors":"Thitithep Sitthiyot , Kanyarat Holasut","doi":"10.1016/j.mex.2024.103010","DOIUrl":"10.1016/j.mex.2024.103010","url":null,"abstract":"<div><div>To overcome the limitations of existing deterministic binary forecast skill verification methods that award a perfect score for forecasting events considered easy to forecast, an improvement factor is introduced. It comprises two components which are 1) a measure of the ease with which an event can be accurately forecasted and 2) a measure of frequency of event. By using two hypothetical datasets, this study demonstrates that an improvement factor could enhance the performance of existing deterministic binary forecast skill verification methods by awarding score that is close to score for no-skill forecast for the perfect forecasts of events considered easy to forecast. In addition, the forecast and actual data on annual inflation rate are used to demonstrate how an improvement factor could be used together with the existing deterministic binary forecast skill verification methods in order to assess skills of the forecasters in practice.<ul><li><span>•</span><span><div>Existing deterministic binary forecast skill verification methods fail to award correct score for events considered easy to forecast.</div></span></li><li><span>•</span><span><div>An improvement factor is developed in order to enhance performance of existing deterministic binary forecast skill verification methods.</div></span></li><li><span>•</span><span><div>Hypothetical and empirical data are used to validate how an improvement factor works.</div></span></li></ul></div></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":"13 ","pages":"Article 103010"},"PeriodicalIF":1.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11513477/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142522301","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

Determination of critical energy release rate at the EVA/Si cell interface of a flexible silicon solar cell 测定柔性硅太阳能电池 EVA/Si 电池界面的临界能量释放率。

IF 1.6

MethodsX Pub Date : 2024-10-11 DOI: 10.1016/j.mex.2024.103004

Hansung Kim, Tarang K. Panchal, Krishnajith Theril

引用次数: 0

Protocol to analyse the structural composition by fluorescence microscopy and different conventional and fluorescence staining methods 利用荧光显微镜和不同的传统及荧光染色方法分析结构组成的规程

IF 1.6

MethodsX Pub Date : 2024-10-10 DOI: 10.1016/j.mex.2024.102999

Agustín Maceda , Agustina Rosa Andrés-Hernández , Teresa Terrazas

引用次数: 0

A new methodology for evaluating the neighbor discovery time in schedule-based asynchronous duty-cycling wireless sensor networks 评估基于计划的异步占空比无线传感器网络中邻居发现时间的新方法

IF 1.6

MethodsX Pub Date : 2024-10-10 DOI: 10.1016/j.mex.2024.102967

Diego Passos , Beatriz Trabbold , Ricardo C. Carrano , Cledson de Sousa

{"title":"A new methodology for evaluating the neighbor discovery time in schedule-based asynchronous duty-cycling wireless sensor networks","authors":"Diego Passos , Beatriz Trabbold , Ricardo C. Carrano , Cledson de Sousa","doi":"10.1016/j.mex.2024.102967","DOIUrl":"10.1016/j.mex.2024.102967","url":null,"abstract":"<div><div>Duty cycling is a fundamental mechanism for battery-operated wireless networks, such as wireless sensor networks. Due to its importance, it is an integral part of several Medium Access Protocols and related wireless technologies. In Schedule-based Asynchronous Duty Cycle, nodes activate and deactivate their radio interfaces according to a pre-designed schedule of slots, which guarantees overlapping uptime between two neighbors, independent of the offset between their internal clocks, making communication between them possible. This paper presents a new methodology for evaluating the Neighbor Discovery Time (NDT) of Schedule-based Asynchronous Duty Cycle. Differently from previous methodologies, it accounts for the possibility of the slots in the schedules of the two neighbors not being perfectly border-aligned — an unrealistic assumption in practice. By means of simulation, we show that not taking this under consideration can lead to an overestimate of the NDT by a factor of 2 depending on the particular scenario, thus justifying the importance of our work.<ul><li><span>•</span><span><div>We propose a new subslot-based methodology for computing the NDT of a wakeup schedule used for asynchronous duty cycling.</div></span></li><li><span>•</span><span><div>It replaces the traditional slot-based methodology, by dividing slots into subslots, allowing for the analysis of non-integer clock offsets between nodes, and further allowing mathematical models to consider the more realistic continuous-time case.</div></span></li><li><span>•</span><span><div>Our validation data shows that the slot-based methodology may overestimate NDT by a factor of up to 2, making the proposed subslot-based methodology much more precise.</div></span></li></ul></div></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":"13 ","pages":"Article 102967"},"PeriodicalIF":1.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432863","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

A secure interoperable method for electronic health records exchange on cross platform blockchain network 跨平台区块链网络电子健康记录交换的安全互操作方法

IF 1.6

MethodsX Pub Date : 2024-10-10 DOI: 10.1016/j.mex.2024.103002

Rahul Ganpatrao Sonkamble , Anupkumar M. Bongale , Shraddha Phansalkar , Deepak Sudhakar Dharrao

{"title":"A secure interoperable method for electronic health records exchange on cross platform blockchain network","authors":"Rahul Ganpatrao Sonkamble , Anupkumar M. Bongale , Shraddha Phansalkar , Deepak Sudhakar Dharrao","doi":"10.1016/j.mex.2024.103002","DOIUrl":"10.1016/j.mex.2024.103002","url":null,"abstract":"<div><div>An Electronic Health Record (EHR) store essential and sensitive patient's medical information. Since health information is highly confidential data, it should be accessible with the consent of the patient. Blockchain based EHR management system offers improvised privacy and patient-centric approach. EHR management systems are available with multiple blockchain platforms. Generally, EHRs are maintained at several independent blockchain platforms. EHR management systems should be capable of securely exchange data on cross platform blockchain network. The interoperability in such blockchain platforms should facilitate seamless cross-chain interaction and information exchange. This article proposes a method that facilitates secure EHR exchange on Ethereum and Hyperledger fabric network using hepatitis dataset. The key contributions of the proposed method include:<ul><li><span>•</span><span><div>Hash lock based interoperable cross-chain method for EHR exchange across Ethereum and Hyperledger fabric.</div></span></li><li><span>•</span><span><div>Additional security to the EHR is ensured by partitioning EHR as on-chain (blockchain platform) and off-chain InterPlanetary File System (IPFS)</div></span></li><li><span>•</span><span><div>Secure Password Authentication-Based Key Exchange (SPAKE) based session management for EHR exchange across two parties.</div></span></li></ul>The proposed patient centric method is validated to ensures the successful exchange of patient EHR across Ethereum and Hyperledger fabric.</div></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":"13 ","pages":"Article 103002"},"PeriodicalIF":1.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446527","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

Urban small-scale hydroponics: A compact, smart home-based hydroponics system 城市小型水栽法：紧凑型智能家庭水培系统

IF 1.6

MethodsX Pub Date : 2024-10-05 DOI: 10.1016/j.mex.2024.102998

Akshay Kushawaha , Divya Shah , Deepali Vora , Nilima Zade , Kamatchi Iyer

引用次数: 0

Estimating carbon leakage from aviation by combining sectoral and general equilibrium models 结合部门模型和一般均衡模型估算航空业的碳泄漏量

IF 1.6

MethodsX Pub Date : 2024-10-03 DOI: 10.1016/j.mex.2024.102975

Taoyuan Wei, Steffen Kallbekken

引用次数: 0

A sustainable methodological approach for mitigation of salt stress of rice seedlings in coastal regions: Identification of halotolerant rhizobacteria from Noakhali, Bangladesh and their impact 缓解沿海地区水稻秧苗盐胁迫的可持续方法：孟加拉国诺阿哈利耐盐根瘤菌的鉴定及其影响

IF 1.6

MethodsX Pub Date : 2024-10-01 DOI: 10.1016/j.mex.2024.102981

F.M. Ashik Mahmud , Md. Aminul Islam , Mehede Hassan Rubel , Prosun Bhattacharya , Firoz Ahmed

引用次数: 0

Exploring the change management framework: An in-depth investigation 探索变革管理框架：深入调查

IF 1.6

MethodsX Pub Date : 2024-09-28 DOI: 10.1016/j.mex.2024.102978

Sobia Asher , Muhammad Nafees , Tamkeen Syeda

{"title":"Exploring the change management framework: An in-depth investigation","authors":"Sobia Asher , Muhammad Nafees , Tamkeen Syeda","doi":"10.1016/j.mex.2024.102978","DOIUrl":"10.1016/j.mex.2024.102978","url":null,"abstract":"<div><div>Change management is part of Software Development Life Cycle (SDLC), particularly during the challenging stage of Requirement Engineering (RE). Managing requirements and incorporating changes can be complex and demanding, Having high impacts on project duration, cost, and ultimately project success and failure, cost, and ultimately, the success or failure of the software project. This research paper aims to explore and analyses various change management frameworks that contribute to the effectiveness of project completion, with a focus on minimizing time and cost estimates while maximizing product quality. Additionally, this study investigates the success and failure rates of software projects, specifically examining the identification of change management frameworks and addressing critical challenges within the context of Global Software Development (GSD). This review provides valuable insights and recommendations for implementing effective change management practices in software development projects that may facilitate future advancement in change management. This paper reviews various research papers and identifies major problems associated with each existing framework on Time constraints, Quick cost estimates, Verification of used and excluded needs, and customer information. We believe that the finding of this paper helps to address those challenges and reduce overall development time and increase the success rate of projects through the review of Requirement change management identification of a framework.</div></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":"13 ","pages":"Article 102978"},"PeriodicalIF":1.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419745","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