检索结果-南通市图书馆

作者： agbor joseph 湖南师范大学

学位级别：硕士

目前,正在开发创新的信息和通信技术,以帮助改善日常生活的各个领域。在这些创新中,物联网(IOT)的发展,普适计算和无处不在计算都是值得关注的,因为它们可以无视终端用户的物理位置,为其提供控制和访问各种计算资源和信息的能力。智能... 详细信息

目前,正在开发创新的信息和通信技术,以帮助改善日常生活的各个领域。在这些创新中,物联网(IOT)的发展,普适计算和无处不在计算都是值得关注的,因为它们可以无视终端用户的物理位置,为其提供控制和访问各种计算资源和信息的能力。智能家居的概念已经存在了十年,并经历了可喜的发展。上下文感知计算的发明是可以应用于各种设置的此类开发的一个好例子。从智能家居的角度来看,上下文感知信息有助于家庭根据手头的情况进行调整。例如,上下文感知智能家居可以通过上下文感知计算自动控制室温或环境灯。上下文感知计算长期以来一直是全球研究的核心领域。虽然上下文感知计算正在不同的平台进行测试,但一个特定的领域是开发上下文感知的智能家居系统。在这个领域中应用和使用上下文感知有望为家庭服务带来有希望的创新。然而,为了使上下文感知的智能家庭系统能够商业化,还有更多的研究空间。开发智能家庭系统对研究人员和工程师来说是一个挑战,因为这些系统的实施和评估过程成本高昂,同时非常耗时。在实际构建之前测试设计的智能家居系统被认为是实现高效智能家居项目的另一个障碍。这是因为各种传感器、家用电器和设备都可用于真正的智能环境。为了解决开发动态上下文感知智能家居系统的问题,本文提出了一种基于上下文感知的智能家居仿真器,适合于智能家居的仿真方面环境。该模拟器提供了一个设计的家庭计划,虚拟传感器和不同的设备作为虚拟家庭环境的模型。还可以定义场景以测试设备状态的各种可能的组合;因此可以简单地评估不同的标准和变量,而无需在实际环境中进行实验。本文旨在设计和实现基于OSGi框架的分布式智能家居环境感知模拟器,其中虚拟传感器创建上下文信息而不是使用物理传感器。XML配置文件用于保存用于构造家庭环境、虚拟设备和服务、模拟上下文信息和测试设备之间的OSGi事件交互的信息。针对当今时代的动态需求,本文开发了一种支持无处不在的技术并具有情境感知能力智能家居系统。交互是基于通过公用OSGi框架以分布式环境的形式连接在一起的实际设备触发的。实际操作上下文与模拟上下文进行比较,并根据一组规则确定智能家居内的交互。环境和管理功能(规则、事件和操作模式)通过一组可配置的XML文件进行配置,动态图形表示描述智能家居的当前状态。本文的主要成果如下:1.本文指出了以往设计的上下文感知模拟器的常见问题和局限性,并提出了一种更具伸缩性和动态性的面向服务架构(SOA)上下文感知模拟器。2.针对智能家居系统的开发和测试,提出了一种基于OSGi的分布式智能家居环境感知模拟器,解决了智能家居设计中存在的问题。OSGi旨在为智能家居系统应用程序的开发提供一个基于模块化和动态的Java系统规范。这种智能家居模拟已被开发为分布式环境。在共享网络的不同对象之间发送和接收数据。由于可以在智能家居中添加和删除设备,因此OSGi框架是最佳的选择。即使设备发生故障(如光故障),系统其余部分的工作也不会受到影响。一旦设备被修复,就可以将其添加回OSGi网络,并在系统中恢复其角色。3.在高度动态模拟器的设计方面,本文提出了一种基于OSGi的环境感知模拟器,用于分布式智能家居中解决该问题。Apache Felix iPOJO(注入的普通Java对象)基于Maven的方法被用于建立OSGi环境。iPOJO是专门为OSGi服务平台创建的面向服务的组件模型。iPOJO的目的是通过提供和使用服务、处理动态性问题来简化OSGi开发,并通过无缝地合并高级功能(包括组件配置、同步和组合)为基本的OSGi机制提供支持。模拟在真正智能家居的设计和开发阶段发挥了重要作用。模拟器直观地表示基于用户活动的智能家居不同设备之间发生的运行时交互。通过虚拟传感器,可以模拟真实环境,并且能够便捷的生成上下文感知逻辑。一旦系统意识到了上下文感知,虚拟设备就可以被真实设备所替代。如前所述,使智能家居系统分布式的解决方案是使用(OSGi)技术。使用OSGi框架来设计分布式智能家居是一个很好的研究领域。文中已经研究并实现了几种模拟器的设计,这些模拟器并不一定基于OSGI。本文类似于傅等学者(2011)所提出的观点。本文目的是为基于分布式OSGi的智能家居系统中的多个居民开发上下文感知逻辑。所开发的工具必须支持多种设备,并且应在不同的智能家居环境中安装。系统的不同组件是可配置的,例如设备、人员和环境,都是通过XML文件进行配置。这使得相同系统可以在任何类似的智能家居中应用,而无需更改任何已开发的组件。由于系统是基于OSGi的,所以它是一个分布式的智能家居系统。本文模拟了一个案例研究场景,并通过实验结果验证了基于OSGi的模拟器的工作原理。该模拟器有两种操作模式,即在Net Beans IDE(集成开发环境)上运行的模拟器模式和使用Apache Felix iPOJO(Maven数据库)开发的OSG

关键词：智能家居系统上下文感知基于OSGi的模拟器 Apache Felixi POJO 仿真

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Traumatic Penile Amputation Post Circumcision: A Series of 3 Cases

引用

Open Journal of Urology 2023年第11期13卷 517-524页

作者： Orock agbor Tanyi Mbassi Achille Aurele Mekeme Mekeme Junior Fouda Jean Cedrick Owon Abessolo Nwatchap Jean Jacques Awoundja Christain Pierre joseph Fouda Department of Surgery and Subspecialties Faculty of Medicine and Biomedical Sciences University of Yaoundé 1 Yaoundé Cameroon Surgery Service Regional Hospital Ngoundere Ngoundere Cameroon Urology and Andrology Service Yaoundé Central Hospital Yaoundé Cameroon Department of Surgery and Subspecialties Higher Institute of Medical Technology Yaoundé Cameroon

Circumcision remains a frequently performed surgical procedure and could be associated with various complications, ranging from mild to catastrophic. Penile amputation is a rare and severe complication usually complex and challenging to manage. We describe three cases of penile amputation injuries following circumcision referred within a week at the urological service of the Yaoundé Central Hospital. The first case was a 5-year-old who had complete penile amputation during circumcision by a nurse assistant at a rural health center. The second was a 7-year-old boy who sustained total penile glans amputation while undergoing circumcision by a nurse under local anesthesia at a rural health facility. The third involved a 6-year-old who had total penile amputation with loss of the amputated stump during circumcision by a traditional practitioner at home. Non-microsurgical penile re-implantations were done with diverse outcomes. The preservation of the amputated stump, the ischemic time and the severity of injury are factors affecting surgical outcome. The aim of this study is to evaluate our management experience and outcome of penile amputation injuries in resource-limited settings. Microsurgical replantation remains the gold standard in the management of penile amputation injuries. However, in resource-limited settings macroscopic replantation could be used as an alternative remedy to salvage the amputated penis.

关键词： Circumcision Penile Amputation Surgical Management Complications

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surgical Management of Adrenal Tumors: Experience of Three Tertiary Hospitals in Yaounde, Cameroon

引用

Open Journal of Urology 2023年第11期13卷 495-516页

作者： Junior Barthelemy Mekeme Mekeme Etoa Ndzie agbor Orock Tanyi Jean Cedrick Fouda Achille Aurele Mbassi Philip Owon Abessolo Bright Che Awondo Marcel Junior Yon Mekeme Pierre Ongolo Zogo Pierre joseph Fouda Eugene Sobngwi Zachary Sando Angwafo III Fru Department of Surgery and Subspecialties Faculty of Medicine and Biomedical Sciences University of Yaounde 1 Yaounde Cameroon Urology and Andrology Department Yaounde Central Hospital Yaounde Cameroon Endocrinology Department Yaounde Central Hospital Yaounde Cameroon Radiology Department Yaounde Central Hospital Yaounde Cameroun Anatomy Cytopathology Department Yaounde Gynecology Obstetrics and Pediatrics Hospital Yaounde Cameroon

Introduction: Surgical management of adrenal tumors has greatly improved over the past years, with laparoscopic adrenalectomy being the gold standard. However, Open adrenalectomy is indicated in large adrenal tumors, malignant tumors and large phaeochromocytomas. We report surgical outcomes of 18 cases of functional adrenal tumors from 2007 to 2022. Methods: We conducted a retrospective cross-sectional and descriptive study in three tertiary hospitals in Yaounde, Cameroon. We reviewed files of patients who underwent adrenalectomy over a period of 15 years from July 2007 to July 2022. Clinical and diagnostic components of adrenal tumors, indications and surgical outcomes were analyzed. Results: A total of 18 patients were included in our study. The average age of patients was 38.33 years, with a female-to-male sex ratio of 2:1. Weight gain (72.2%) was the most represented clinical sign. The secretory nature of tumor and malignancy represented 55.5% and 33.3% of the operative indications and all 18 (100%) of the patients had open adrenalectomy. Vascular injury was the most common intraoperative complication with 5.63%, while acute adrenal insufficiency (16.7%) was the most common post-operative complication. The average tumor size was 6.22 cm and the mean duration of hospitalization was 11.61 days. Adenoma 7 (38.9%) and adrenocortical carcinoma 5 (27.8%) were the frequent histological types. One patient died two months post-surgery from anemia-related complications. Conclusion: The success of adrenal surgery is linked to multidisciplinary patient care and the experience of the surgeon. Conventional surgery still has indications with satisfactory short- and medium-term results in our context.

关键词： Adrenal Tumors Surgical Management Outcome Yaounde

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Characterization of Kaolin Deposits in Okpella and Environs, Southern Nigeria

引用

International Journal of Geosciences 2019年第3期10卷 317-327页

作者： Benjamin Odey Omang Ebenezer Agayina Kudamnya Ayodele Olumiyiwa Owolabi joseph Odey Emmanuel Ude Aniwetalu Thomas agbor Ako Department of Geology University of Calabar Calabar Nigeria Department of Mining Engineering Federal University of Technology Akure Nigeria Department of Pure and Applied Chemistry University of Calabar Calabar Nigeria Department of Geological Sciences Nnamdi Azikiwe University Awka Nigeria Department of Geology Federal University of Technology Minna Minna Nigeria

Kaolin is one of the most important industrial minerals whose application is dependent on its structure and chemical composition. This study makes an attempt to explore and determine the origin of kaolin deposits within and around Okpella, as well as to investigate the mineralogical and chemical compositions using the X-ray diffraction (XRD) and X-ray fluorescence (XRF) method. These were carried out with the intention of determining the most suitable applications for the clay mineral. It was observed that major phases in the clay samples from the three different deposits are kaolinite, microcline, illite/mica, plagioclase/albite and quartz. These phases were observed in varied percentages. Samples from Ajego 2 show a marked absence of kaolinite but contain high concentration of plagioclase feldspar and quartz which permit its usage in the production of glass and iron industries. Further, the samples from Ajego 1 contain by far the highest concentration of kaolinite, while the samples from Anegha consist of kaolinite, a mixed layer of illite/mica, plagioclase, alkali feldspars, and albite which is necessary for producing mullite fibers in ceramic matrix at a temperature of around 1400°C and it is suitable in pigment production. The XRF result for Ajego2 and Anegha samples has Silica composition of 51.847 wt%, 32.540 wt% and 37.295 wt% respectively and an alumina content of 14.962 wt%, 29.834 wt% and 20.227 wt% respectively. The trace amount of some of the oxides such as K2O, TiO2, Fe2O3 and SnO2 can help in the beneficiation process.

关键词： Kaolin Mineral Characterization XRD XRF Okpella

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

COVID-19 compared to other epidemic coronavirus diseases and theflu

引用

World Journal of Clinical Infectious Diseases 2020年第1期10卷 1-13页

作者： James A Ayukekbong Michel L Ntemgwa Solange A Ayukekbong Eta E Ashu Terence A agbor Infection Prevention and Control Unit St Joseph’s HospitalElliot LakeON P5A 2R3Canada EpiTech Public Health NanaimoBC V9R 0H7Canada Natural and Non-prescription Health Products Directorate Health Products and Food BranchHealth CanadaOttawaON K1A 0K9Canada Cancer Care Ontario TorontoON M5P 3L6Canada DynaLIFE Medical Labs EdmontonAB T5J 5E2Canada Laboratory Medicine and Pathology University of AlbertaEdmontonAlbertaAB T6G 2R3Canada

Coronaviruses are among the largest group of known positive-sense RNA viruses with a wide range of animal hosts as reservoir. In the last two decades,newly evolved coronaviruses such as the severe acute respiratory syndrome coronavirus(SARS-CoV) which caused the infamous 2002 outbreak, the Middle East respiratory syndrome coronavirus(MERS-CoV) which caused an outbreak in 2012, and now the SARS-CoV-2 [responsible for the current coronavirus disease 2019(COVID-19)] have all posed notable threats to global public ***, how does the current COVID-19 outbreak compare with previous coronaviruses diseases? In this review, we look at the key differences between SARS-CoV, MERS-CoV, and SARS-CoV-2, and examine challenges in determining accurate estimates of the severity of COVID-19. We discuss coronavirus outbreaks in light of key outbreak severity indicators including,disease fatality, pathogen novelty, ease of transmission, geographical range, and outbreak preparedness. Finally, we review clinical trials of emerging treatment modalities and provide recommendations on the control of COVID-19 based on the mode of transmission of the coronaviruses. We also recommend the development and use of a standardized predictive epidemic severity models to inform future epidemic response.

关键词： Severe acute respiratory syndrome,SARS Middle East respiratory syndrome,MERS COVID-19 SARS-CoV2 Coronaviruses Influenza,Flu Respiratory viruses

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：