In this paper, we present a mechanism for runtime updating of all kernel modules of a highly modular dynamic real-time operating system. Our approach can help solve the lack of adaptability, extensibility, and flexibility of existing real-time operating systems. The dynamic real-time operating system will efficiently support a wide range of applications since any kernel module can be dynamicall...

Executive Summary This paper discusses the requirements and challenges inherent in the design of a carrier-class network operating system (OS). Key facets of Juniper Networks ® Junos ® operating system, Juniper's network operating system, are used to illustrate the evolution of OS design and underscore the relationship between functionality and architectural decisions. The challenge of designin...

This paper proposes an index called net load carrying capability (NLCC) to evaluate the contribution of a generating unit to the flexibility of a power system. NLCC is defined as the amount by which the load can be increased when a generating unit is added to the system, while still maintaining the flexibility of the system. This index is based on the flexibility index termed ramping capability...

Operating systems research has traditionally consisted of adding functionality to the operating system or inventing and evaluating new methods for performing functions. Regardless of the research goal, the single constant has been that the size and complexity of operating systems increase over time. As a result, operating systems are usually the single most complex piece of software in a comput...

Executive Summary This paper discusses the requirements and challenges inherent in the design of a carrier-class network operating system (OS). Key facets of Juniper Networks ® JUNOS ® Software, Juniper's network operating system, are used to illustrate the evolution of OS design and underscore the relationship between functionality and architectural decisions. The challenge of designing a cont...

We used FPGA for developing prototypes of novel sensor network system because of its short turn-around-time and flexibility. For FPGA-based sensor network system, we have to decrease the size of operating system because of small memory. Scalability is another important feature because if logic circuit in the FPGA is changed, the operating system also has to reflect this modification. In this pa...

Middleware is a class of software technologies designed to help manage the complexity and heterogeneity inherent in distributed systems. It is defined as a layer of software above the operating system but below the application program that provides a common programming abstraction across a distributed system, as shown in Figure 1. In doing so, it provides a higher-level building block for progr...

Modern operating systems should be extensible and flexible. This means that the operating system should be able to accept new behaviour and change existing behaviour without too much trouble and that it should ideally also be able to do this without any, or very little, downtime. Furthermore, during the past years the importance of the network has increased drastically, creating a demand for op...