Virtual Operating System Research Articles

ЗАСТОСУВАННЯ ТЕХНОЛОГІЙ ВІРТУАЛІЗАЦІЇ UNIX-ПОДІБНИХ ОПЕРАЦІЙНИХ СИСТЕМ У ПІДГОТОВЦІ БАКАЛАВРІВ ІНФОРМАТИКИ

Despite the widespread use of virtualization technologies in education the problem of individual selection of virtualization tools for teaching certain courses, including teaching operating systems to Bachelors of Computer Science, remains scarcely studied. Research of operating systems teaching process to Bachelors of Computer Science found a range of issues in using virtualization technologies. These are as listed: hardware and software failures; low performance of virtualized operating systems; lack of adapted instructions; dependence on specific computer laboratories; unequal conditions of independent work with virtualized operating systems. Comparison of Bachelors of Computer Science scores in Operating Systems course which included studying Linux and Windows operating systems and also Fundamentals of Operating Systems Theory, resulted in general lower level of learning outcomes in Linux compared to the ones of the entire academic subject. A survey of Ukrainian teachers of Operating Systems course shows a number of differences in teaching process. It includes differences in teachers’ experience of using virtualization technologies, variety of virtualization technologies applied during the course, factors estimation for selecting virtualization tools. The article proposes the methodology of using unix-like operating systems virtualization technologies in professional training of Bachelors of Computer Science based on the variable approach to using mentioned technologies. The approach involves combining several virtualization tools in the frames of one course of Operating Systems to meet specific features of teaching the course as well as individual students’ needs and ensures hardware and software fault tolerance. Didactic model underlying the proposed methodology is described in the article. Experimental results on methodology effectiveness are provided.

Evaluation of Virtual Operating Systems and Switches under Ring, Star and Tree Topologies for Streaming Large Data Sets

This paper discusses architectural performance of virtual operating switches, and systems under various topological structures to handle packet deliveries of large streaming and dynamic data sets. The topology structures studied include: tree, fully connected mesh, and star. A virtual network framework is developed that can generate any number of nodes with reconfigurable parameters. An evaluation on memory requirements, disk-space, and CPU usage on three different virtual network switches (openvSwitch, openSwitch, openWRT) were also investigated. Two specific protocols–Routing Information Protocol (RIP) and Open Shortest Path First (OSPF) are tested against bandwidth requirements.

Security Analytics for Protecting Virtualized Infrastructures

This paper explains the prevention of attack on the host operating system from the virtual operating system to improve security measures in cloud computing environment. There may be many virtual operating system running on a single host operating system To prevent this, we proposed a security analytics approach using logistic regression that detects advanced attacks using machine learning. Network logs collected periodically generated from the guest virtual machines are stored in the Hadoop Distributed File System. Next, determination of attack presence is performed through logistic regression. Experiments are conducted to evaluate the proposed approach using well-known malware as well as in comparison with existing security techniques for virtualized infrastructure. The results show these detection of malware and network attack using log files generated from virtual operating system Here we use big data concepts and Hadoop file system to store and process large amount of log file generated dynamically.

Executing secured virtual machines within a manycore architecture

Manycore processors are a way to face the always growing demand in digital data processing. However, by putting closer distinct and possibly private data, they open up new security breaches. Splitting the architecture into several partitions managed by a hypervisor is a way to enforce isolation between the running virtual machines. Thanks to their high number of cores, these architectures can mitigate the impact of dedicating cores both to the virtual machines and the hypervisor, while allowing an efficient execution of the virtualized operating systems. We present such an architecture allowing the execution of fully virtualized multicore operating systems benefiting of hardware cache coherence. The physical isolation is made by the means of address space via the introduction of a light hardware module similar to a memory-management unit at the network-on-chip entrance, but without the drawback of relying on a page table. We designed a cycle-accurate virtual prototype of the architecture, controlled by a light blind hypervisor with minimum rights, only able to start and stop virtual machines. Experiments made on our virtual prototype shows that our solution has a low time overhead – typically 3% on average.

Simplifying virtual linux containers using docker.

Docker is a relatively new take on Linux container based virtualization. Docker is quickly being adopted and used worldwide for its ease of use. It makes use of Linux kernel namespaces and control-groups to isolate running container instances, which are self-contained and fully-functioning systems. This makes it possible for multiple container instances to run on the same host natively using the same host Linux kernel. This contrasts with the current trend of hypervisor based virtualization, which uses a virtual guest operating system running on top of the host operating system. Because each system has its own configuration, porting hefty applications can be troublesome. Using Docker, applications can be ported from a development environment to a production environment quickly and seamlessly. Docker packages this technology into an easy-to-manage system which can be maintained by both system administrators and developers alike. By utilizing Docker, businesses can increase their efficiency and productivity by saving time which is usually reserved for systems configuration.

操作系统辅助教学平台的设计与实现

操作系统是计算机专业的一门核心专业课程，具有较强的实验性。由于概念多、涉及面广等因素，往往难以很好地理解和掌握，国内外在操作系统实践教学方面所做了大量研究。本文通过构造一个虚拟操作系统运行环境，试图为学习、设计和研究操作系统提供一个简单、易用的平台，为操作系统的教学工作打下了良好基础。 Operating system is one of the core computer science courses, with a strong experimental feature. It is often difficult to understand and grasp well because the course has many concepts and involves wide aspects of real operating system. A large number of researches have been done in practice teaching of the operating system course at home and abroad. In this paper, we construct a virtual operating system environment to provide a simple, easy to use platform for study, design and research of operating system. The platform has also laid a good foundation for operating system teaching work.

M2M 환경에서 안전한 데이터 공유를 위한 상호인증 및 키 교환 기법

With rapid rise of virtualization technology from diverse types of cloud computing service, security problems such as data safety and reliability are the issues at stake. Since damage in virtualization layer of cloud service can cause damage on all host (user) tasks, Hypervisor that provides an environment for multiple virtual operating systems can be a target of attackers. This paper propose a security structure for protecting Hypervisor from hacking and malware infection.

Business Hypervisors for Real-time Applications

System virtualization is one of the hottest trends in information technology today. It is not just another nice to use technology but has become fundamental across the business world. It is successfully used with many business application classes where cloud computing is the most visual one. Recently, it started to be used for soft Real-Time (RT) applications such as IP telephony, media servers, audio and video streaming servers, automotive and communication systems in general. Running these applications on a traditional system (Hardware + Operating System) guarantee their Quality of Service (QoS); virtualizing them means inserting a new layer between the hardware and the (virtual) Operating System (OS), and thus adding extra overhead. Although these applications’ areas do not always demand hard time guarantees, they require the underlying virtualization layer supports low latency and provide adequate computational resources for completion within a reasonable or predictable timeframe. These aspects are intimately intertwined with the logic of the hypervisor scheduler. In this paper, a series of tests are conducted on three hypervisors (VMware ESXi, Hyper-V server and Xen) to provide a benchmark of the latencies added to the applications running on top of them. These tests are conducted for different scenarios (use cases) to take into consideration all the parameters and configurations of the hypervisors’ schedulers. Finally, this benchmark can be used as a reference for choosing the best hypervisor-application combination.

Controlling Multiple Virtual Machines in Computer Classrooms

A management of computer classroom is undoubtedly a difficult task for the administrator which has to prepare virtual operating systems for education. It is quite common that lectors need to edit the particular machine during the semester, and that is the case where the main problems can appear. The process of changes deployment is not just very time-consuming but during it a virtual machine inconsistency can appear. The main part of this paper focuses on system process diagrams and its pseudocode. At first, the machine is created on the remote server by lector or administrator. After a proper approval, the machine is able to be deployed. The lector then specifies the details about date, time and destinations of the virtual machine deployment. Once these details are approved, the virtual machine will be automatically deployed at the specified time. The automatic deployment includes also an initial configuration of the virtual machine at remote desktop and its post-install configuration (hostname, MAC address, etc.). Once all steps are completed, the process will be marked as succeed. We present an automatized solution which provides a possibility how to easily manage computer classroom with virtual operating systems. The proposed solution should deliver a greater flexibility, more reliability and faster deployment in comparison with the current solution used in our computer classroom. The proposal is also able to manipulate with already deployed machines for easy changes (e.g. software updates). The main advantage is the improvement of classroom management process automation.

Symphony: a framework for accurate and holistic WSN simulation.

Research on wireless sensor networks has progressed rapidly over the last decade, and these technologies have been widely adopted for both industrial and domestic uses. Several operating systems have been developed, along with a multitude of network protocols for all layers of the communication stack. Industrial Wireless Sensor Network (WSN) systems must satisfy strict criteria and are typically more complex and larger in scale than domestic systems. Together with the non-deterministic behavior of network hardware in real settings, this greatly complicates the debugging and testing of WSN functionality. To facilitate the testing, validation, and debugging of large-scale WSN systems, we have developed a simulation framework that accurately reproduces the processes that occur inside real equipment, including both hardware- and software-induced delays. The core of the framework consists of a virtualized operating system and an emulated hardware platform that is integrated with the general purpose network simulator ns-3. Our framework enables the user to adjust the real code base as would be done in real deployments and also to test the boundary effects of different hardware components on the performance of distributed applications and protocols. Additionally we have developed a clock emulator with several different skew models and a component that handles sensory data feeds. The new framework should substantially shorten WSN application development cycles.

The Formation of an E-portfolio Indicator for Malaysia Skills Certificate: A Modified Delphi Survey

Abstract The use of e-Portfolios over paper-based portfolio which provide a more effective means of information storage has become very popular nowadays. However, assessment indicators for e-Portfolios can vary according to a particular educational system. This also implies for the field of Technical Vocational Education Training (TVET). For TVET in Malaysia, students would undergo a technical competence certification called the Malaysian Skills Certification Malaysia (MSCM), established by the National Occupational Skill Standard (NOSS). This certification ensures that TVET students achieve certain competency standards in their area of specification upon graduation. These students are acquired to create paper-based portfolios to demonstrate their knowledge and competence level. The problem is that current studies show that paper-based portfolios are problematic and e-Portfolios have the potential to address this problem. Nevertheless, recent studies show that there is a lack of an e-Portfolio indicator for TVET. In an attempt to address this problem, the study aims to investigate the factors and indicators of e-Portfolio in accordance to the standards of MSCM. A modified Delphi study was conducted with a panel of 11 experts who are competent and experienced in the use of portfolio and ICT in TVET. The study consisted of three Delphi rounds. In the first round, 17 indicators of a TVET e-Portfolio were identified via the literature. These elements were categorized into four main groups: (i) the recognition of prior achievements, (ii) virtual learning space, (iii) competency assessment, and (iv) operating system. In the second and third rounds, the elements from each previous round were assessed by the expert panel until a consensus was achieved. These findings were then analyzed using mean analysis and inter quartile range. The analysis indicated that the 17 indicators identified were important in assessment of TVET graduates. The new indicator for MSCM could be used to measure whether TVET students have achieved the level of knowledge and competency required by NOSS in order to be competent for the workplace.

Lightweight VNF Manager Solution for Virtual Functions

This paper presents a creative lightweight solution to package any existing VNF (Virtualized Network Function) to support ETSI NFV (Network Function Virtualization) architecture quickly and easily. The preconditions of existing VNF are quite straightforward and simple, such as running on Virtual Machine (VM) and Operating System (OS) supporting Secure Shell (SSH) commands. With our solution, the new VNF (Virtualized Network Function) will have the additional functions required to integrate with ETSI NFV architecture, without redesigning the existing Element Manager. This will include VNF Descriptor, lifecycle management benefits such as deploy within minutes, scale out/in on demand, etc.

Applied-Information Technology with Design and Development of Bluetooth PSTN Gateway and Audio Terminal

Based on the Bluetooth specification and profiles, this paper discussed the concept of 3-in-1 phone and the design and realization of two versions of Bluetooth PSTN gateway and audio terminal developed by the authors. First, this paper illustrates the characteristics and innovation of PC version of Bluetooth protocol stack developed by us, which includes the design and realization of Virtual Operating System (VOS) and such methods as bytes sequence and bytes alignment shield, and discusses the development of equipments. Then, the design and realization of embedded PSTN gateway and audio terminal are discussed, the realization of embedded software and PSTN gateway that supports multi-terminals are emphasized. Finally, the application prospects of PSTN gateway and audio terminal are introduced.

Design of Non-Lethal Ammunition Combat Simulation

In this paper, the virtual reality technology and its hardware and software development platforms are introduced. Focus on the characteristic of non-lethal ammunition, it elaborates on the design ideas, system structure, key technology of developing virtual operation and training system with tools. The system provides a new experimental platform for the armed forces to handle emergency events as it simulates a more realistic battlefield situation.

Development of a web-based glaucoma registry at King Khaled Eye Specialist Hospital, Saudi Arabia: a cost-effective methodology.

In this brief communication, we present the steps used to establish a web-based congenital glaucoma registry at our institution. The contents of a case report form (CRF) were developed by a group of glaucoma subspecialists. Information Technology (IT) specialists used Lime Survey softwareTM to create an electronic CRF. A MY Structured Query Language (MySQL) server was used as a database with a virtual machine operating system. Two ophthalmologists and 2 IT specialists worked for 7 hours, and a biostatistician and a data registrar worked for 24 hours each to establish the electronic CRF. Using the CRF which was transferred to the Lime survey tool, and the MYSQL server application, data could be directly stored in spreadsheet programs that included Microsoft Excel, SPSS, and R-Language and queried in real-time. In a pilot test, clinical data from 80 patients with congenital glaucoma were entered into the registry and successful descriptive analysis and data entry validation was performed. A web-based disease registry was established in a short period of time in a cost-efficient manner using available resources and a team-based approach.

개방형 인증 프로토콜을 이용한 가상 운영체제에 설치된 SW 접근통제 방안

최근 들어 국내외 대형 IT 기업들은 하드웨어 또는 소프트웨어 기반의 기술을 활용하여 다양한 클라우드 서비스를 제공하고 있다. 이러한 클라우드 서비스 기술을 통해 사용자로 하여금 지리적 위치나 PC, 모바일 장비 등의 제약 없이 다양한 클라우드 서비스를 이용할 수 있는 장점을 가지고 있다. 이러한 클라우드 서비스를 제공하기 위한 주요 기술로는 가상화, 프로비저닝, 빅데이터 처리 기술 등이 있다. 이러한 기술들이 있음에도 불구하고, 다양한 유형의 보안 사고가 지속적으로 발생하고 있다. 이로 인해 주요 데이터의 외부노출을 꺼리는 기업들은 하드웨어와 소프트웨어를 직접 구축 및 운영하는 사설 클라우드 서비스를 직접 구축하고 있다. 이때, 가상화 기반 환경에서 사용자의 권한에 따라 소프트웨어를 다르게 제공하고자 하는 경우 사용자 권한에 따라 소프트웨어의 실행을 제어하기 어렵고, 시스템 리소스 낭비 문제, 반복적인 사용자 로그인 수행 등 여러 가지 문제점이 있다. 이에 본 논문에서는 개방형 인증 프로토콜과 가상화 기술을 접목하여 사용자 권한에 따른 응용 소프트웨어를 제공하는 방안을 제안 하였다. In recent years, IT companies offer various cloud services using hardware-based technologies or software-based technologies. User can access these cloud services without the constraints of location or devices. The technologies are virtualization, provisioning, and big data processing. However, security incidents are constantly occurring even with these techniques. Thus, many companies build and operate private cloud service to prevent the leak of critical data. If virtual environment are different according to user permission, many system are needed, and user should login several virtual system to execute an program. In this paper, I suggest the access control method for application software on virtual operating system using the Open Authentication protocol in the Cloud system.

Studies on Web Game Interface Design

WebGame translated into Chinese is "web game", "web game" user interface uses browser as direct media to communicate with game and users, which has big difference with interface design of other games. Web game has huge potential audience, it simplifies game experience process to the extreme. The industry has recently treats browser as a virtual operating system, which makes a better prospect for web games. We hope that we have come to effective principles and methods and can guide future web game interface design.

클라우드 서비스 가상화 내부 환경을 위한 BareMetal Hypervisor 기반 보안 구조 설계

With rapid rise of virtualization technology from diverse types of cloud computing service, security problems such as data safety and reliability are the issues at stake. Since damage in virtualization layer of cloud service can cause damage on all host (user) tasks, Hypervisor that provides an environment for multiple virtual operating systems can be a target of attackers. This paper propose a security structure for protecting Hypervisor from hacking and malware infection.

A Memory Architecture Design for High-Performance Cloud Computing

The advent of cloud is drastically changing the High Performance Computing (HPC) application scenarios. Current virtual machine-based IaaS architectures are not designed for HPC applications. This paper presents a new cloud oriented storage system by constructing a large scale memory grid in a distributed environment in order to support low latency data access of HPC applications. This Cloud Memory model is built through the implementation of a private virtual file system (PVFS) upon virtual operating system (OS) that allows HPC applications to access data in such a way that Cloud Memory can access local disks in the same fashion.

The Lunar Virtual Reality Structure Based on CE-1 Data

Up to now, the main research in china about Chang'e satellite and data sent by it is about rail orbit determination and data use, but the study concerning the Lunar Virtual Reality Structure has not appear. Based on Lunar DEM and lunar image having been done, with Super3D Editor as a platform, lunar three-dimensional virtual operating system has been completed. This paper mainly introduces the coordinate transformation, the construction of three-dimensional model and model spatial index, and provides better technology for the information extraction.