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Performance Assessment of MANET Routing Protocols

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International Journal of Communications, Network and System Sciences 2015年第11期8卷 456-470页

作者： Bharath Chandra Mummadisetty astha Puri Shahram Latifi Department of Electrical & Computer Engineering University of Nevada Las Vegas USA

Mobile ad hoc networks use many different routing protocols to route data packets among nodes. Various routing protocols have been developed, and their usage depends on the application and network architecture. This study examined several different routing protocols, and evaluated the performance of three: the Ad Hoc On-Demand Distance Vector Protocol (AODV), the Destination-Sequenced Distance-Vector Routing (DSDV), and the Dynamic Source Routing (DSR). These three protocols were evaluated on a network with nodes ranging from 50 to 300, using performance metrics such as average delay, jitter, normal overhead, packet delivery ratio, and throughput. These performance metrics were measured by changing various parameters of the network: queue length, speed, and the number of source nodes. AODV performed well in high mobility and high density scenarios, whereas DSDV performed well when mobility and the node density were low. DSR performed well in low-mobility scenarios. All the simulations were performed in NS2 simulator.

关键词： AODV DSDV DSR Wireless Sensor Networks MANETs

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硬膜外分娩镇痛对产妇母乳喂养的影响

硬膜外分娩镇痛对产妇母乳喂养的影响

作者： astha Tiwari（提瓦瑞）东南大学

学位级别：硕士

研究目的采用流行病学调查问卷的方法对实施硬膜外分娩镇痛产妇的母乳喂养情况进行研究,为安全实施分娩镇痛提供临床依据。研究对象及方法随机选取2016年5月至2016年12月600例在东南大学附属中大医院单胎妊娠分娩的产妇进行流行病学调... 详细信息

研究目的采用流行病学调查问卷的方法对实施硬膜外分娩镇痛产妇的母乳喂养情况进行研究,为安全实施分娩镇痛提供临床依据。研究对象及方法随机选取2016年5月至2016年12月600例在东南大学附属中大医院单胎妊娠分娩的产妇进行流行病学调查研究。其中300例行硬膜外分娩镇痛,300例未行硬膜外分娩镇痛。根据纳入和排除标准,对经阴道分娩的210例行硬膜外分娩镇痛及199例未行硬膜外分娩镇痛的孕妇进行分析。通过调查问卷分别对产后早期(分娩后第3天,一般指出院当天)及产褥期(产后6周)的母乳喂养相关信息进行评估。统计分析:采用EPIDATA 3.1和SPSS19.0软件进行分析。两组之间相关资料采用卡方检验进行分析。相关性分析用于评估部分母乳喂养与母乳喂养停止相关的因素之间的关系。单因素Logistic回归分析对部分或非母乳喂养的危险因素进行分析,p0.05)。实施硬膜外分娩镇痛的孕妇发现产后早期存在母乳喂养困难的问题。3、产后早期硬膜外分娩镇痛、母婴接触、分娩后即刻母乳喂养均与母乳喂养方式呈相关性;硬膜外分娩镇痛与部分母乳喂养之间的关系呈正相关(ρ =0.108,p=0.030);无母婴接触、分娩后延迟喂养均能增加部分母乳喂养的风险,差异有统计学意义(p<0.05)。结论1、实施硬膜外分娩镇痛能明显缓解孕妇分娩疼痛。2、硬膜外分娩镇痛仅对产后早期部分母乳喂养有影响;对产后6周部分母乳喂养无明显影响。硬膜外分娩镇痛能延迟产后早期母婴接触的时间、降低医护人员提供母乳喂养帮助的可能。3.硬膜外分娩镇痛、未母婴接触、分娩后即刻母乳喂养会增加产后早期部分母乳喂养的风险。

关键词：硬膜外分娩镇痛母乳喂养分娩分娩疼痛缓解

A Hybrid Method for Compression of Solar Radiation Data Using Neural Networks

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International Journal of Communications, Network and System Sciences 2015年第6期8卷 217-228页

作者： Bharath Chandra Mummadisetty astha Puri Ershad Sharifahmadian Shahram Latifi Department of Electrical & Computer Engineering University of Nevada Las Vegas NV USA

The prediction of solar radiation is important for several applications in renewable energy research. There are a number of geographical variables which affect solar radiation prediction, the identification of these variables for accurate solar radiation prediction is very important. This paper presents a hybrid method for the compression of solar radiation using predictive analysis. The prediction of minute wise solar radiation is performed by using different models of Artificial Neural Networks (ANN), namely Multi-layer perceptron neural network (MLPNN), Cascade feed forward back propagation (CFNN) and Elman back propagation (ELMNN). Root mean square error (RMSE) is used to evaluate the prediction accuracy of the three ANN models used. The information and knowledge gained from the present study could improve the accuracy of analysis concerning climate studies and help in congestion control.

关键词： Data Compression Predictive Analysis Artificial Neural Network Compression Ratio Machine Learning Climate Data Prediction

Vasospasm as a Complication after Aneurysmal Rupture and Its Relation with Surgical Clipping and Endovascular Coiling among a Georgian Sample

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World Journal of Neuroscience 2022年第3期12卷 153-162页

作者： Maha Kassem Lama Alchaar Ahmed Abdelkader Mohammad Eghbalbakhtiary Koka Gogichashvili Mirza Khinikadze Shriniwas Chandrasekhar Yadav astha Zambani Sonali Mankar Mahalakshmi Jayasankar Mohamed Abdelsattar Atta Ismail Ali Sarah Ibrahim Natia Iashvili New-Vision University Tbilisi Georgia Medical Corporation Evex Caucasus Medical Center Tbilisi Georgia New-Vision University Hospital Tbilisi Georgia

Background: Potentially lethal, aneurysmal subarachnoid hemorrhage has a bad prognosis for many individuals. Over the past few decades, endovascular and surgical interventions have been developed, including surgical clipping, and endovascular coiling. Patients who have aSAH are also susceptible to delayed cerebral ischemia and cerebral vasospasm. The aim of this study is to compare the outcome of endovascular coiling with surgical clipping in patients with SAH, specifically in relation to prevalence of vasospasm, in the country of Georgia. Method: In this study, we present a retrospective review of the outcomes of 217 patients with acute subarachnoid hemorrhage who underwent endovascular coiling or surgical clipping. The data were gathered from patients who are admitted to New Vision University Hospital and Caucasus Medical Center in Tbilisi, Georgia, between 2017 and 2022. Results: Vasospasm was prevalent in 217 of the patients who had aneurysmal rupture when they first appeared. Endovascular coiling or surgical clipping was used to treat aneurysmal rupture. In our sample, 24.81 percent of patients who underwent coiling experienced vasospasm after 14 days, compared to 31.25 percent of patients who underwent clipping. After endovascular coiling and surgical clipping, the severity of vasospasm was only slightly different, according to Lindegaard ratios. Finally, 32 patients (23.35 percent) died after coiling whereas 55 patients (68.75 percent) died within three decades of clipping. Conclusion: After 5 years of data collection, this study has demonstrated the most favorable option for treatment is endovascular coiling. However, the treatment choice takes multiple factors into account, and clipping is not ideal for some ruptured aneurysms. Despite the fact that endovascular coiling is usually successful and minimally invasive, complications can occur and additional monitoring and potential surgical intervention are indicated.

关键词： Aneurysms Subarachnoid Hemorrhage Surgical Clipping Endovascular Coiling Vasospasm

Effect of Curvature of Tip and Convexity of Electrode on Localization of Particles

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Open Journal of Fluid Dynamics 2015年第4期5卷 295-301页

作者： Sudarshan Ghonge D. Nagendra Prasad Swarnim Narayan Hains Francis astha Sethi Subimal Deb Souri Banerjee Department of Physics Birla Institute Technology and Science-Pilani Hyderabad Campus Hyderabad India Department of Physics and Frederick Seitz Materials Research Laboratory University of Illinois Urbana-Champaign IL USA Department of Physics GIT GITAM University Visakhapatnam India

We investigate the effect of curvature of the tip and the convexity of an electrode on the localization of suspended particles under the combined effect of dielectrophoresis and AC electroosmosis through simulations using COMSOL Multiphysics. A systematic analysis of the parameters defining the convexity of the electrode—the radius of the tip and the apex angle shows that suspended particles can be trapped closely to the electrode edges for comparatively larger tip radii and apex angles. This in turn should favour the trapping of polarizable molecules between the electrodes only if the fluid velocities at the vortices are not very strong.

关键词： Finite Element Method Transport Dynamics AC Electroosmosis Dielectrophoresis Vortex

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十个金点子,送礼有惊喜

疯狂英语（初中天地） 2010年第12期 16-19页

作者： astha Garg 小狐

圣诞节又到了，编辑部一年一度的圣诞交换礼物派对又将开始咯一各小编们已经在紧锣密鼓地筹备礼物——怎样才能让大家耳目一新、让自己那份大礼惊艳全场呢？

关键词：送礼圣诞节编辑部礼物

Intensive diabetes management and goal setting are key aspects of improving metabolic control in children and young people with type 1 diabetes mellitus

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World Journal of Diabetes 2014年第6期5卷 877-881页

作者： astha Soni Sze May Ng Department of Paediatrics Southport and Ormskirk NHS Trust Department of Women’s and Children’s Health Institute of Translational MedicineUniversity of Liverpool

Diabetes control in children remains poor in spite of advances in treatment for last 10 years. The aim of this review was to look at various aspects of intensive therapy in the management of type 1 diabetes such as insulin regimes, role of target setting, psycho-educational approaches and self-management. To achieve good metabolic control, clear goal setting with adequate support for self-management are essential. Psycho-educational and behavioural interventions aimed at specific areas of management have shown significant improvement in quality of life and diabetes control.

关键词： children educational young psycho spite aimed advances autonomy likely encouraging

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寻找乡村的记忆莫拉达巴德村庄咖啡/酒吧

室内设计与装修 2020年第7期 98-102页

作者：小麦(编译) 无 Aanchai Sawhney Sagar Goyal Praneet Singh Varsha Rath astha Verma Niveditaa Gupta(摄影) 不详 Portal 92

村落,作为印度乡村的自然聚落单元,在过去很长一段时间内已经成为"印度身份"的代名词。虽然村落的文化及其建筑的多样性令人着迷,但在全球化的浪潮中,也不可避免地遭到先进技术和建筑材料的不断渗入。这种优缺点并存的渗透,持续引发着... 详细信息

村落,作为印度乡村的自然聚落单元,在过去很长一段时间内已经成为"印度身份"的代名词。虽然村落的文化及其建筑的多样性令人着迷,但在全球化的浪潮中,也不可避免地遭到先进技术和建筑材料的不断渗入。这种优缺点并存的渗透,持续引发着人们对于印度城市化设计解决方案的探索,而这种城市化的进程,其渐进的区域正紧密地与村落的变迁交织在一起。当设计师受邀设计"村庄咖啡/酒吧"时,项目的名称便直接引出了上述这些问题。研究派理论采用二分法,对村落所代表的内容及其相关性进行了解释。

关键词：建筑材料酒吧二分法自然聚落咖啡城市化多样性全球化