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Smart MobiNet:A Deep Learning Approach for Accurate Skin Cancer Diagnosis

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Computers, Materials & Continua 2023年第12期77卷 3533-3549页

作者： Muhammad Suleman Faizan Ullah Ghadah Aldehim dilawar Shah Mohammad Abrar Asma Irshad Sarra Ayouni Department of Computer Science Bacha Khan UniversityCharsaddaPakistan Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Faculty of Computer Studies Arab Open UniversityMuscatOman School of Biochemistry and Biotechnology University of the PunjabLahorePakistan

The early detection of skin cancer,particularly melanoma,presents a substantial risk to human health.This study aims to examine the necessity of implementing efficient early detection systems through the utilization of deep learning techniques.Nevertheless,the existing methods exhibit certain constraints in terms of accessibility,diagnostic precision,data availability,and scalability.To address these obstacles,we put out a lightweight model known as Smart MobiNet,which is derived from MobileNet and incorporates additional distinctive attributes.The model utilizes a multi-scale feature extraction methodology by using various convolutional layers.The ISIC 2019 dataset,sourced from the International Skin Imaging Collaboration,is employed in this study.Traditional data augmentation approaches are implemented to address the issue of model overfitting.In this study,we conduct experiments to evaluate and compare the performance of three different models,namely CNN,MobileNet,and Smart MobiNet,in the task of skin cancer detection.The findings of our study indicate that the proposed model outperforms other architectures,achieving an accuracy of 0.89.Furthermore,the model exhibits balanced precision,sensitivity,and F1 scores,all measuring at 0.90.This model serves as a vital instrument that assists clinicians efficiently and precisely detecting skin cancer.

关键词： Deep learning Smart MobiNet machine learning skin lesion melanoma skin cancer classification

Thermal optimization of MHD nanofluid over a wedge by using response surface methodology:Sensitivity analysis

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Propulsion and Power Research 2023年第4期12卷 556-567页

作者： Ahmed Zeeshan dilawar Hussain Zaheer Asghar Muhammad Mubashir Bhatti Faisal Z.Duraihem Department of Mathematics&Statistics FBASInternational Islamic UniversityIslamabadH-10Islamabad 44000Pakistan Department of Mathematics Faculty of Natural and Health SciencesUniversity of BaltistanSkardu 16100Pakistan Centre for Mathematical Sciences Pakistan Institute of Engineering and Applied SciencesNiloreIslamabad 45650Pakistan Department of Physics and Applied Mathematics Pakistan Institute of Engineering and Applied SciencesNiloreIslamabad 45650Pakistan Department of Mathematics and System Sciences Shandong University of Science and TechnologyShandongChina Department of Mathematics College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia

It is well documented that heat transfer is enhanced with addition of nanosized particles in fluid.But,in a mechanical system there are variety of factors influences the heat transfer.Some factors are significant while others are not.In this paper,authors will discuss sensitivity of different input parameters such as Le,Nt and Nb on output responses𝑁Nu_(x)and Sh_(x).To achieve this goal,the problem is modeled using basic conservation laws.The formulated model is a set of PDEs,which are converted to set of non-linear ODEs by using similarity transformation.Then these ODEs are solved numerically by using MATLAB built in package bvp4c and compared the numerical results with existing work and found good results.Sensitivity analysis is performed by employing RSM to determine the relationship between the input parameters such that 0.1≤Le≤1,0.1≤Nt≤1 and 0.1≤Nb≤1 and the output responses(Nu_(x)and Sh_(x)).ANOVA tables are generated by using RSM.By using the ANOVA tables the correlations between input parameters and output response are developed.To check the validity of correlated equations,the residuals are plotted graphically and show best correlations between input parameters and output responses.The high values of R^(2)=98.65 and AdjR^(2)=97.43 for Nu_(x)and R^(2)=97.83 and AdjR^(2)=95.88 for Sh_(x)demonstrates the high validity of ANOVA results to perform sensitivity analysis.Finally,we have conducted a sensitivity analysis of the responses and came to the important results that Nt and Nb is most sensitive to Nusselt number and Sherwood number respectively.

关键词： Sensitivity analysis Nusselt number Sherwood number Response surface methodology(RSM) Analysis of variance(ANOVA) Nano fluid

Mapping favorable groundwater potential recharge zones using a GIS-based analytical hierarchical process and probability frequency ratio model:A case study from an agro-urban region of Pakistan

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Geoscience Frontiers 2020年第5期11卷 1805-1819页

作者： Arfan Arshad Zhijie Zhang Wanchang Zhang Adil dilawar Key Laboratory of Digital Earth Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Department of Geography Center for Environmental Sciences and Engineering(CESE)University of ConnecticutStorrsCT06269-4148USA LREIS Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences11ADatun RoadChaoyang DistrictBeijing 100101China

In Punjab(Pakistan),the increasing population and expansion of land use for agriculture have severely exploited the regional groundwater resources.Intensive pumping has resulted in a rapid decline in the level of the water table as well as its quality.Better management practices and artificial recharge are needed for the development of sustainable groundwater resources.This study proposes a methodology to delineate favorable groundwater potential recharge zones(FPRI)by integrating maps of groundwater potential recharge index(PRI)with the DRASTIC-based groundwater vulnerability index(VI).In order to evaluate both indexes,different thematic layers corresponding to each index were overlaid in ArcGIS.In the overlay analysis,the weights(for various thematic layers)and rating values(for sub-classes)were allocated based on a review of published literature.Both were then normalized and modified using the analytical hierarchical process(AHP)and a frequency ratio model respectively.After evaluating PRI and FPRI,these maps were validated using the area under the curve(AUC)method.The PRI map indicates that 53%of the area assessed exists in very low to low recharge zones,22%in moderate,and 25%in high to excellent potential recharge zones.The VI map indicates that 38%of the area assessed exists in very low to low vulnerability,33%in moderate,and 29%in high to very high vulnerability zones.The FPRI map shows that the central region of Punjab is moderately-to-highly favorable for recharge due to its low vulnerability and high recharge potential.During the validation process,it was found that the AUC estimated with modified weights and rating values was 79%and 67%,for PRI and VI indexes,respectively.The AUC was less when evaluated using original weights and rating values taken from published literature.Maps of favorable groundwater potential recharge zones are helpful for planning and implementation of wells and hydraulic structures in this region.

关键词： Weightage overlay Analytical hierarchical process(AHP)analysis Frequency ratio(FR) Vulnerability Groundwater recharge zones Area under curve(AUC)

授权型领导与员工公共服务创新行为研究:探索巴基斯坦卫生部门创造性自我效能感和内在动机的作用

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授权型领导与员工公共服务创新行为研究:探索巴基斯坦卫生部门创...

作者： Sana dilawar 中国科学技术大学

学位级别：硕士

在公共部门,授权型领导被认为是推动和改善员工结果(如创新行为)的激励力量的来源。然而,对于授权型领导力如何与员工层面的个人特征相互作用,从而影响卫生危机期间的公共服务创新行为,却不太重视。基于社会认知理论,本研究假设在员工... 详细信息

在公共部门,授权型领导被认为是推动和改善员工结果(如创新行为)的激励力量的来源。然而,对于授权型领导力如何与员工层面的个人特征相互作用,从而影响卫生危机期间的公共服务创新行为,却不太重视。基于社会认知理论,本研究假设在员工的创造性自我效能感和内在动机的中介作用下,授权型领导与卫生专业人员的公共服务创新行为之间存在逻辑联系。我们收集了巴基斯坦旁遮普省12家不同公立医院的428名医生和护士的调查问卷,运用SPSS-PLS软件进行计算、分析。研究结果表明,授权型领导与公共卫生服务创新行为和内在动机之间积极关系。创造性自我效能感和内在动机与公共卫生服务创新行为呈正相关。此外,我们发现内在动机对授权型领导和公共卫生服务创新行为之间的关系存在中介调节作用,而创造性自我效能感则没有。本研究探讨了授权型领导的双重效应,医院的人力资源管理部门必须认识到授权型领导所蕴含的“时机”(何时授权或对哪类护士授权),以实现对护士服务创新行为的长期有益影响。我们认为授权型领导、员工的内在动机和医疗服务创新行为是由环境、个人和行为概念组成的三者相互作用的信条,从而帮助公共卫生工作者在需要彻底解决的健康危机下保持其服务创新能力。

关键词：授权领导创造性自我效能感内在动机公共服务创新行为

Assessing Change of Lamto Reserve Area Based on the MODIS Time Series Data and Bioclimatic Factors Using BFAST Algorithms

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American Journal of Plant Sciences 2022年第4期13卷 517-540页

作者： Christian Jonathan Anoma Kouassi dilawar Khan Lutumba Suika Achille James Kehinde Omifolaji Mikouendanandi Mouendo Rahmat Brice Espoire Kebin Zhang Xiaohui Yang School of Soil and Water Conservation Beijing Forestry University Beijing China School of Ecology and Nature Conservation Beijing Forestry University Beijing China Department of Forestry and Wildlife Management Federal University Dutse Dutse Jigawa State Nigeria School of Economics and Management Beijing Forestry University Beijing China Institute of Desertification Studies Chinese Academy of Forestry Beijing China

Lamto Reserve area is a savannah landscape threatened by periodic drought, and anthropogenic activities leading to natural ecological imbalance. The ecological support services of the landscape had been significantly impacted by the grassland ecosystem. The Breaks for Additive Season and Trend Algorithms have been implemented in R to analyze the land cover/land use dynamic in relation to the climatic driver of Lamto forest from 2000 to 2020. We examine the vegetation state breaks using vegetation phenological patterns, and several time series including the Normalized Difference Vegetation Index and the Enhanced Vegetation Index, were studied utilizing Breaks for Additive Season and Trend. The findings indicate that the phenological changes in the vegetation in 2020 resulted from an increased temperature from (27.7°C) to (32.17°C), and a decrease in precipitation (71.75 millimeters). The analysis of variance ANOVA of the non-parametric Mann-Kendall test reveals a strong correlation between Precipitation/Evapotranspiration Grass (p mperature/Evapotranspiration Grass (p alized Difference Vegetation Index (p in vegetation detected by the Breaks for Additive Season and Trend Algorithms were caused by temperature extremes and reduced rainfall.

关键词： Assessing Break Change Detection Land Cover Climate Extreme Vegetation Vulnerability

Safety and efficacy of amplatzer duct occluder for percutaneous closure of ventricular septal defects with tunnel shape aneurysm: Medium term follow up

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World Journal of Cardiovascular Diseases 2013年第2期3卷 228-233页

作者： Muhammad dilawar Zaheer Ahmad Hamad General Hospital Doha Qatar Southampton University Hospital Southampton UK

Objectives: Different devices including Amplatzer duct occluder has been used for percutaneous closure of ventricular septal defects. This study reports our medium term follow up of perimembranous and muscular ventricular septal defects with tunnel shape aneurysm closure using the Amplatzer duct occluder. Materials and Methods: From May 2006-December 2012, we used Amplatzer duct occluder in seven ventricular septal defect patients here atHamad General Hospital,Doha,Qatar. There were 4 male and 3 female patients with an age range of 4 - 32 years with a median of 8 years and weight range of 16 - 63 kgwith a median of33 kg. In this group, 6 were perimembranous and 1 muscular and all these ventricular septal defects had a tunnel shape aneurysm. Transesophageal echocardiographic diameter ranged from 4 - 8 mmand Qp/Qs was 1 - 1.6. Angiographically, the diameter on the left ventricular side measured 3.5 - 10 mmand on right ventricular side 2.4?- 5 mm. 8/6 mmAmplatzer duct occluder was used to close these ventricular septal defects. Results: There were no major complications and immediately after the procedure there was no residual shunt in any of these patients and all the patients remained in normal sinus rhythm. One patient was expatriate and no further follow up was available. The rest of the 6 patients had 1 - 80 months with a median of 54 months follow up and none of these patients had any residual shunt and all remained in normal sinus rhythm. Two patients developed trivial aortic valve regurgitation immediate post procedure, one remained unchanged and the 2nd has progressed to mild at this latest follow up. Conclusion: Amplatzer duct occluder is feasible and a safe device for percutaneous closure of selective tunnel shape aneurysmal perimembranous and muscular ventricular septal defects.

关键词： Ventricular Septal Defect Amplatzer Duct Occluder Aneurysm

四芳基环丁烷连接的苝—卟啉二元体和卟啉聚集体的合成和表征

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四芳基环丁烷连接的苝—卟啉二元体和卟啉聚集体的合成和表征

作者： dilawar Khan 北京化工大学

学位级别：硕士

卟啉由于其独特的光物理和电化学性质和卟啉分子中的空腔与不同金属离子配位会改变其原有的光物理和电化学性质而备受关注。卟啉独特的性质包含高光致发光、强光稳定性、高的荧光的量子产率和良好的吸光性。苝也用作电子受体,因为它们... 详细信息

卟啉由于其独特的光物理和电化学性质和卟啉分子中的空腔与不同金属离子配位会改变其原有的光物理和电化学性质而备受关注。卟啉独特的性质包含高光致发光、强光稳定性、高的荧光的量子产率和良好的吸光性。苝也用作电子受体,因为它们具有较低的LUMO和卟啉-苝二聚体较小的蚀变能。本论文重点研究了合成通过杂芳基乙烯和其光二聚体连接苝和卟啉发色团,以及卟啉和苯乙烯基吡啶光二聚体的自组装。新设计的苝-卟啉二聚体是由可光裂解的杂芳基乙烯的光二聚体连接的。在短波长紫外地照射下(254 nm),光二聚体将快速裂解成两个单体。这种光反应可以被设计为触发器,将二聚体裂解成独立的苝和卟啉部分。两个发色团之间的相互作用将从分子内相互作用转变为分子间相互作用,这使得被卟啉淬灭的苝的荧光得到了恢复。本研究中合成了三种二元体,分别是,(1).苝-二聚体-苝,(2).卟啉-二聚体-苝,和(3).卟啉-二聚体-卟啉二元体。使用1H NMR和13C NMR对这些化合物进行了表征。基于以上这些生色团,通过四芳基环丁烷相互连接合成了功能二元体,研究了它们的光化学性质,如紫外-可见吸收光谱和荧光。另一方面,我们还设计了基于卟啉的自组装单体和光二聚体,其中两个未报道。1,2-二(4-甲酰基)-3,4-(4-吡啶基)环丁烷和1,3-二(4-甲酰基)-2,4-(4-吡啶基)环丁烷两种异构体均在HC1溶液中,通过300 W中压汞灯的照射下合成。对于这些未报道的光二聚体,通过1H NMR,13C NMR,IR和HRMS充分表征了其结构。对溴苯乙烯基吡啶和对氯苯乙烯基吡啶的头对尾的光二聚体是在酸性水溶液中通过光化学的方法合成的。由于吡啶环在酸性水溶液中质子化,从而溶解在水中。苯环是富电子的基团,而质子化的吡啶环是缺电子的。在酸性水溶液中,两分子单体由于相互的吸引作用,以头尾相对形式靠近,然后在光照的条件下,得到了光二聚体。我们研究了光二聚体与锌卟啉是之间的配位的相互作用,如1,3-双(4-氯苯基)-2,4-双(4-吡啶基)环丁烷,1,3-双(4-溴苯基)-2,4-双(4-吡啶基)环丁烷在1H NMR光谱下研究了配位相互作用。吡啶环2,6-位的质子的化学位移从8.44 ppm迁移到4.00 ppm和4.90 ppm证实了四丁氧基苯基锌卟啉与1,3-双(4-氯苯基)-2,4-双(4-吡啶基)环丁烷之间的强配位相互作用。1,3-双(4-溴苯基)-2,4-双(4-吡啶基)环丁烷与四丁氧基苯基锌卟啉的光二聚体的作用显示了相类似的结果。

关键词：苝-卟啉二元体四芳基环丁烷四丁氧基苯基锌卟啉杂芳基乙烯光二聚反应

Anomalous left coronary artery from pulmonary artery: Case series and brief review

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Open Journal of Pediatrics 2012年第1期2卷 77-81页

作者： Muhammad dilawar Zaheer Ahmad Hamad Medical Corporation Doha Qatar Southampton University Hospital Southampton UK

Anomalous origin of left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital coronary anomaly. In this study, we present all the ALCAPA patients which were admitted at our institution during April 2007-December 2010. Retrospective review of these patients regarding their clinical presentation and the use of diagnostic modalities will be presented in this series. There were total of five patients, three male and 2 female, with age range of 2 - 12 months. The most common symptoms at presentation were tachypnea (4/5) and poor feeding with irritability (3/5). Electrocardiogram was abnormal in 2/5 cases and chest X ray revealed cardiome-galy with pulmonary congestion in 4/5 patients. Echocardiogram showed mitral valve regurgitation in 5/5 cases (3 with moderate and 2 with mild to moderate), Left ventricular dilatation/dysfunction in 4/5 patients, echogenic left ventricular papillary muscles in 4/5 patients and prominent right coronary with strong suspecision of ALCAPA in 4/5 patients. Coronary angiography was performed in 4/5 cases to confirm the diagnosis. We conclude that by thorough clinical assessment along with ECG and CXR, the diagnosis of ALCAPA can be strongly suspected. Echocardiogram can almost always make the diagnosis of ALCAPA and coronary angiography can confirm the diagnosis in rare atypical cases.

关键词： Anomalous Origin of Left Coronary Artery from Pulmonary Artery

气候因素对大兴安岭兴安落叶松和白桦树干生物量和林分结构的影响

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气候因素对大兴安岭兴安落叶松和白桦树干生物量和林分结构的影响

作者： dilawar Khan 北京林业大学

学位级别：硕士

气候变化已经成为全球科学家关注的问题,几乎影响到每一个生态系统。内蒙古自治区是中国最大的林区之一,也是中国北方环境保护的重要场所,森林面积2366万公顷,占全国总面积的八分之一,占森林覆盖率的21.03%。森林在区域和全球碳循环中... 详细信息

气候变化已经成为全球科学家关注的问题,几乎影响到每一个生态系统。内蒙古自治区是中国最大的林区之一,也是中国北方环境保护的重要场所,森林面积2366万公顷,占全国总面积的八分之一,占森林覆盖率的21.03%。森林在区域和全球碳循环中发挥着重要作用。气候变化事件已成为一个重要问题;不同地理区域的森林对气候变化具有不同的敏感性。兴安落叶松和白桦是内蒙古大兴安岭地区的原生优势树种,对该地区碳储量起着重要作用。本文以大兴安岭地区优势树种兴安落叶松和白桦为研究对象,随机设置66个半径17.8m的圆形样地,通过实测数据,结合异速生长模型,研究了 1950-2016年间降水、温度等气候因子对兴安落叶松和白桦干生物量的影响。研究结果表明,(1)兴安落叶松干生物量与年降水量(R2=0.86,R2=0.71,R2=0.79,R2=0.59)和最高气温(R2=0.76,R2=0.64,R2=0.67,R2=0.52)有很强的相关性。而年最低温度(R2=0.58,R2=0.43,R2=0.55,R2=0.46)和年平均温度(R2=0.40,R2=0.22,R2=0.36,R2=0.19)对干生物量影响相对较小。(2)白桦干生物量与年降水量(R2=0.80)和温度(R2=0.75)显著相关,高度与年降水量(R2=0.76)、年气温(R2=0.51)呈正相关,而林分密度与年降水量(R2=0.26)和年气温(R2=0.20)呈负相关。因此,兴安落叶松和白桦对气候变化具有很强的适应能力,它们能在干旱、干旱和高温胁迫气候条件下生存。

关键词：森林生态系统茎生物量碳储量落叶松白桦内蒙古