Hygeia J. D.Med.10 (1) August 2018 - January 2019最新文献_第2页

Nano-magnesium oxide as hard template synthesis of lignin carbonbased solid acids and its application for cellulose hydrolysis 纳米氧化镁作为硬模板合成木质素碳基固体酸及其在纤维素水解中的应用

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.32964/TJ18.1.67

Zhao-yang Ma, Runming Gong, Ying Han, Xing Wang, G. Sun, Y. Li, Jinghui Zhou

引用次数: 1

A Novel Hybrid Moth Flame Optimization with Sequential Quadratic Programming Algorithm for Solving Economic Load Dispatch Problem 一种新的混合飞蛾火焰优化序列二次规划算法求解经济负荷调度问题

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.11

Kashif Rehman, Aftab Ahmed

引用次数: 2

Effective Image Segmentation using Composite Energy Metric in Levelset Based Curve Evolution 基于水平集曲线演化的复合能量度量有效图像分割

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.14

M. M. Jawaid, B. N. Soomro, S. Memon, Noor-u-Zaman Leghari

{"title":"Effective Image Segmentation using Composite Energy Metric in Levelset Based Curve Evolution","authors":"M. M. Jawaid, B. N. Soomro, S. Memon, Noor-u-Zaman Leghari","doi":"10.22581/muet1982.1901.14","DOIUrl":"https://doi.org/10.22581/muet1982.1901.14","url":null,"abstract":"Accurate segmentation of anatomical organs in medical images is a complex task due to wide inter-patient variability and several acquisition dependent artefacts. Moreover, image noise, low contrast and intensity inhomogeneity in medical data further amplifies the challenge. In this work, we propose an effective yet simple algorithm based on composite energy metric for precise detection of object boundaries. A number of methods have been proposed in literature for image segmentation; however, these methods employ individual characteristics of image including gradient, regional intensity or texture map. Segmentation based on individual featres often fail for complex images, especially for medical imagery. Accordingly, we propose that the segmentation quality can be improved by integrating local and global image features in the curve evolution. This work employs the classic snake model aka active contour model; however, the curve evolution force has been updated. In contast to the conventional image-based regional intensity statistics, the proposed snake model evolves using composite image energy. Hence, the proposed method offers a greater resistance to the local optima problem as well as initialization perturbations. Experimental results for both synthetic and 2D (Two Dimensional) real clinal images are presented in this work to validate the performance of the proposed method. The performance of the proposed model is evaluated with respect to expert-based manual ground truth. Accordingly, the proposed model achieves higher accuracy in comparison to the state-of-the-art region based segmentation methods of Lankton and Yin as reported in results section.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80509922","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

Identification of Causes and Minimization of Delays in Highway Projects of Pakistan 巴基斯坦公路项目延误的原因识别和最小化

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.09

S. Sohu, A. Chandio, K. Ullah

{"title":"Identification of Causes and Minimization of Delays in Highway Projects of Pakistan","authors":"S. Sohu, A. Chandio, K. Ullah","doi":"10.22581/muet1982.1901.09","DOIUrl":"https://doi.org/10.22581/muet1982.1901.09","url":null,"abstract":"The problem of delay in construction industry is a regular phenomenon worldwide, and construction industry of Pakistan has no exception, particularly in highways projects. Delay can be described as the extension of time to complete the construction project. The aim of this paper is to identify main causes of delays in highway projects of Pakistan, and to determine mitigating measures for the identified causes. The research method of this study is based on literature review, questionnaire survey and semi structured interview. From in-depth literature review, twenty-six common causes of delay were found. A questionnaire survey was carried out among construction professionals of highway projects. The causes of delay in highways projects were ranked referring to their Mean values. A semi structured interview was carried out to determine mitigation measures for the top ten causes of delays. The data gathered from questionnaire survey was analyzed using SPSS (Statistical Package for the Social Sciences) while, data collected through semi structured interviews was analyzed using Nvivo software. The findings of this study are expected to be useful for construction parties, to mitigate the delays in highway construction projects of Pakistan.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"222 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75638588","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: 8

An Analysis of Sindhi Annotated Corpus using Supervised Machine Learning Methods 基于监督机器学习方法的Sindhi标注语料库分析

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.15

Mazhar Ali, A. I. Wagan

{"title":"An Analysis of Sindhi Annotated Corpus using Supervised Machine Learning Methods","authors":"Mazhar Ali, A. I. Wagan","doi":"10.22581/muet1982.1901.15","DOIUrl":"https://doi.org/10.22581/muet1982.1901.15","url":null,"abstract":"The linguistic corpus of Sindhi language is significant for computational linguistics process, machine learning process, language features identification and analysis, semantic and sentiment analysis, information retrieval and so on. There is little computational linguistics work done on Sindhi text whereas, English, Arabic, Urdu and some other languages are fully resourced computationally. The grammar and morphemes of these languages are analyzed properly using dissimilar machine learning methods. The development and research work regarding computational linguistics are in progress on Sindhi language at this time. This study is planned to develop the Sindhi annotated corpus using universal POS (Part of Speech) tag set and Sindhi POS tag set for the purpose of language features and variation analysis. The features are extracted using TF-IDF (Term Frequency and Inverse Document Frequency) technique. The supervised machine learning model is developed to assess the annotated corpus to know the grammatical annotation of Sindhi language. The model is trained with 80% of annotated corpus and tested with 20% of test set. The cross-validation technique with 10-folds is utilized to evaluate and validate the model. The results of model show the better performance of model as well as confirm the proper annotation to Sindhi corpus. This study described a number of research gaps to work more on topic modeling, language variation, sentiment and semantic analysis of Sindhi language.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"127 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79810871","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: 6

RFID-Based Automated Shared Drop Box for Laundry Business: A Process Model 基于rfid的洗衣业务自动共享投递箱:流程模型

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.04

Sarwat Iqbal, Sana Ullah, K. Ahsan, Muhammad Saeed, Muhammad Azhar Hussain

{"title":"RFID-Based Automated Shared Drop Box for Laundry Business: A Process Model","authors":"Sarwat Iqbal, Sana Ullah, K. Ahsan, Muhammad Saeed, Muhammad Azhar Hussain","doi":"10.22581/muet1982.1901.04","DOIUrl":"https://doi.org/10.22581/muet1982.1901.04","url":null,"abstract":"Collection and delivery of laundry is an important process in the laundry business. The laundry businesses have adopted diverse models such as over the counter collection/delivery, online booking etc. The laundries are collected or delivered from customers’ doorstep or from customers’ desired location at a convenient time. In this paper, business process re-engineering concept has been incorporated to improve the collection and delivery process of laundry using RFID (Radio-Frequency Identification) tagging and Automated Laundry Collection Drop Box. The Devil’s Quadrangle has been used as a tool for evaluation. The proposed model will result in reduction in cost, time and improvement in service quality. It ultimately results in customers’ loyalty, economic efficiency and gain of a competitive advantage over competitor. Other advantages for laundry business include automatic collection and delivery, enhanced customer convenience, enhanced flexibility and industry economic savings, enhanced customer satisfaction and decreased labor work. In the proposed automated laundry collection model, reputed laundry businesses will make a consortium and outsource collection and delivery process to a courier company. Different collection and delivery options are proposed in the model.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84474257","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

Wavelet Based Video Denoising using Probabilistic Models 基于概率模型的小波视频去噪

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.02

Azka Maqsood, I. Touqir, A. M. Siddiqui, Maham Haider

{"title":"Wavelet Based Video Denoising using Probabilistic Models","authors":"Azka Maqsood, I. Touqir, A. M. Siddiqui, Maham Haider","doi":"10.22581/muet1982.1901.02","DOIUrl":"https://doi.org/10.22581/muet1982.1901.02","url":null,"abstract":"Wavelet based image processing techniques do not strictly follow the conventional probabilistic models that are unrealistic for real world images. However, the key features of joint probability distributions of wavelet coefficients are well captured by HMT (Hidden Markov Tree) model. This paper presents the HMT model based technique consisting of Wavelet based Multiresolution analysis to enhance the results in image processing applications such as compression, classification and denoising. The proposed technique is applied to colored video sequences by implementing the algorithm on each video frame independently. A 2D (Two Dimensional) DWT (Discrete Wavelet Transform) is used which is implemented on popular HMT model used in the framework of Expectation-Maximization algorithm. The proposed technique can properly exploit the temporal dependencies of wavelet coefficients and their non-Gaussian performance as opposed to existing wavelet based denoising techniques which consider the wavelet coefficients to be jointly Gaussian or independent. Denoised frames are obtained by processing the wavelet coefficients inversely. Comparison of proposed method with the existing techniques based on CPSNR (Coloured Peak Signal to Noise Ratio), PCC (Pearson’s Correlation Coefficient) and MSSIM (Mean Structural Similarity Index) has been carried out in detail.The proposed denoising method reveals improved results in terms of quantitative and qualitative analysis for both additive and multiplicative noise and retains nearly all the structural contents of a video frame.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85175358","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: 1

De-Centralized Multi Robot Co-Ordination and Communication 分散式多机器人协调与通信

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.08

S. Khan, B. Athar

{"title":"De-Centralized Multi Robot Co-Ordination and Communication","authors":"S. Khan, B. Athar","doi":"10.22581/muet1982.1901.08","DOIUrl":"https://doi.org/10.22581/muet1982.1901.08","url":null,"abstract":"The aim of this research is to develop a decentralized communication system of multiple robots which have capability to communicate and coordinate with each other, by which all robots work individually while keeping connectivity among them. Decentralized communication between robots is the main part of this project. This type of communication shows great potential in many aspects. A decentralized system is the combination of both intelligent and decision making inspired from nature. To meet this object two identical robots are developed which successfully communicate with each other to complete an assigned task. A single task is given to both robots; to find specific object/target location. Once the target is found by any of the robot that robot will then communicate with second robot to guide the path of object/target location. Guiding path to the second robot is the challenging task as discussed in this paper. The Robots use Bluetooth devices to calculate and extract the RSSI (Received Signal Strength Indication)values for communication purpose.Both robots work together as a team. By working in communicated way their time is reduced to achieve the task and create synergy. Any task could be easily attained in team work than by the work of the single individual robot.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"1554 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87853932","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

Effect of Artificial Aging Temperature on Mechanical Properties of 6061 Aluminum Alloy 人工时效温度对6061铝合金力学性能的影响

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.03

Mukesh Kumar, M. M. Baloch, M. Abro, S. A. Memon, A. Chandio

{"title":"Effect of Artificial Aging Temperature on Mechanical Properties of 6061 Aluminum Alloy","authors":"Mukesh Kumar, M. M. Baloch, M. Abro, S. A. Memon, A. Chandio","doi":"10.22581/muet1982.1901.03","DOIUrl":"https://doi.org/10.22581/muet1982.1901.03","url":null,"abstract":"Aluminum alloys have been attracted by several engineering sectors due to their excellent strengthweight ratio and corrosion resistant properties. These are categorized into 1, 2, 3, 4, 5, 6, 7and 8xxx on the basis of alloying elements. Among these 6xxx series contains aluminum–magnesium–silicon as alloying elements and are widely used in extruded products and automotive body panels. The major advantages of these alloys are good corrosion resistance, medium strength, low cost, age hardening response no yield point phenomenon and Ludering. 6xxx series alloys generally have lower formability than other aluminum alloys which restrict their utilization for wide applications. Keeping in view of the shortcomings in the set of mechanical properties of 6xxx series the efforts were made to improve the tensile strength and toughness properties through age hardening. In present study heat treatment cycles were studied for 6061 aluminum alloy. Three different age hardening temperatures 160, 200 and 240oC were selected. The obtained results showed that 17.26, 7.69, and 10.51% improvement in tensile strength, toughness and hardness respectively was achieved with solution treatment at 380oC followed by an aging 240oC. Microstructural study revealed that substantial improvements in the mechanical properties of 6061 aluminum alloy under heat treatment were achieved due to precipitation of Mg2Si secondary phase.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77179760","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: 6

Sensor-Fusion Based Navigation for Mobile Robot in Outdoor Environment 基于传感器融合的户外移动机器人导航

Hygeia J. D.Med.10 (1) August 2018 - January 2019 Pub Date : 2019-01-01 DOI: 10.22581/muet1982.1901.10

Muhammad Yousaf Ali Khan, E. Mustafa, A. Nawaz, N. Saleem, U. Illahi

{"title":"Sensor-Fusion Based Navigation for Mobile Robot in Outdoor Environment","authors":"Muhammad Yousaf Ali Khan, E. Mustafa, A. Nawaz, N. Saleem, U. Illahi","doi":"10.22581/muet1982.1901.10","DOIUrl":"https://doi.org/10.22581/muet1982.1901.10","url":null,"abstract":"Autonomous navigation of the vehicles or robots is very challenging and useful task used by many scientists and researchers these days. By keeping this fact in mind, an algorithm for autonomous navigation of mobile robot in outdoor environment is proposed. This navigation track consists of colored border containing obstacles and some unplanned surfaces along with some specific points for GPS (Global Positioning System) alarms. The main goal is to avoid colored border and obstacles. For the vision problem webcam is used. First the colored border is detected by using OpenCV library by following HSI (Hue Saturation Intensity)technique. The Canny edge algorithm is used to find both edges of the border, then for detecting straight lines on both sides of track, Hough transformation is used. Finally, the closest border line is detected and its center point is calculated for which the mobile robot has to steer to avoid it. Second step is to avoid the obstacles, which is done by LRF (Laser Range Finder), first the range of LRF is defined, because not all obstacles have to be avoided, only those obstacles are detected and avoided which are in specified range as defined before, and finally GPS receiver is used to make alarms at some specific points. As a result, a successful navigation of the mobile robot in the outdoor environment is implemented.","PeriodicalId":13063,"journal":{"name":"Hygeia J. D.Med.10 (1) August 2018 - January 2019","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81000615","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