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"Private planes Performance."
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Airplane performance on grass airfields
\"Airplane Performance on Grass Airfields presents an experiment-based approach to analysis and flight testing of airfield performance on grass runways. It discusses improvements for operations efficiency and safety of these airfields. The book is intended for researchers and practicing engineers in the fields of aviation and aircraft safety and performance. The book analyzes the interaction between the landing gear wheels and the surface of a grass runways during both takeoff and landing. It covers test methods and devices for measuring performance and introduces an information system for the surface condition of grass airfields: GARFIELD\"-- Provided by publisher.
Book
Design and Implementation of Enhanced Programmable Data Plane Supporting ICN Mobility
Information-centric networking (ICN) separates the identifier and locator of network entities, providing a natural advantage in supporting mobility. To gain the advantage of ICN to support mobility, an urgent challenge is the problem of practical implementation with performance optimization. Software-defined networking (SDN) can be regarded as infrastructure to implement ICN mobility. However, it is difficult for the centralized SDN controller to quickly process mobile signaling. Therefore, this paper proposes enhanced programmable data plane supporting ICN mobility. By offloading mobility-related control plane functions from the controller to the data plane, the data plane can locally process mobile signaling without interacting with the controller. We propose an offloading mechanism for control plane functions, based on a rule table, where the controller authorizes the data plane to process the mobile signaling by loading the programmable rule table to data plane’s control element, and the control element intercepts the mobile signaling, matches the predefined rule table, and executes a series of application logic actions. In addition, we propose an improved SmartSplit algorithm to manage the rule table and speed up packets matching the rule table. Based on Intel’s Data Plane Development Kit (DPDK), we implement the enhanced programmable data plane. Our experimental results prove that the proposed enhanced programmable data plane has a stronger ability to process mobile signaling and reduce latency.
Journal Article
A Generic High-Performance Architecture for VPN Gateways
Virtual private network (VPN) gateways are widely applied to provide secure end-to-end remote access and to relay reliable interconnected communication in cloud computing. As network convergence nodes, the performance of VPN gateways is limited by traditional methods of packet receiving and sending, the kernel protocol stack and the virtual network interface card. This paper proposes a generic high-performance architecture (GHPA) for VPN gateways in consideration of its generality and performance. In terms of generality, we redesign a generic VPN core framework by modeling a generic VPN communication model, formulating generic VPN core technologies and presenting corresponding core algorithms. In terms of performance, we propose a three-layer GHPA for VPN gateways by designing a VPN packet processing layer based on a data plane development kit (DPDK), implementing a user space basic protocol stack and applying our proposed generic VPN core framework. On the basis of the research work above, we implement a high-performance VPN (HP-VPN) and a traditional VPN (T-VPN) that complies with GHPA and traditional methods, respectively. Experimental results prove that the performance of HP-VPN based on GHPA is superior to T-VPN and other common VPNs in RTT, system throughput, packet forwarding rate and jitter. In addition, GHPA is extensible and applicable for other VPN gateways to improve their performance.
Journal Article
Reforming severance pay : an international perspective
Throughout the developed and developing world there is growing demand for policies that would facilitate access to jobs by the most vulnerable, improve their earnings, and reduce their dependency on public support. As a result, governments are increasingly focused on removing obstacles faced by employers to create jobs and on instilling incentives for individuals to re-enter the labor market or to move toward more productive employment possibilities. Severance pay a program compensating formal workers for dismissal by employers or with an end-of-service benefit is often blamed for distorting employer hiring and firing decisions. Together with restrictive labor market regulations and other formal labor market features, this program is held responsible for excessive job protection with a negative impact on labor market outcomes, in particular affecting the most vulnerable. Despite this strong negative assessment among many labor market economists, surprisingly little is known about this program that exists in most countries around the world as a legally mandated benefit. This lack of knowledge may derive from the special 'positioning' of the program between labor code and social insurance; its origins were in the first policy domain, but its objectives for key programs were replicated in the second domain in particular unemployment and retirement benefits. This is the first-ever book to shed light on this program in a comprehensive manner its historical origins, its rationale, and its characteristics across the world. It reviews the soundness of the empirical accusation, assesses recent country reforms, and offers policy reform alternatives and policy guidance. The policy directions include folding severance pay into existing social insurance programs, where they exist, and to make severance pay contractual between market partners as a way to enhance efficiency in a knowledge-based economy. Folding severance pay into employment benefits may also be an opportunity to move away from unemployment insurance, which is fraught by moral hazard, toward a promising 'hybrid' system of unemployment insurance savings accounts supplemented by social pooling.
eBook
Entwicklungsdynamik von Vergütungssystemen in Nonprofit-Organisationen
Although a considerable amount of research focuses on compensation systems for executives and specialists in for-profit organizations, this issue has tended to be neglected in the context of non-profit organizations (NPO). This paper introduces a model describing dynamics of compensation systems for executives and specialists in NPOs. The construction of the model is based on grounded theory method. We show that compensation systems in NPOs develop from person-based to function-based systems and from function-based to performance-based ones. The first change from person-based to function-based systems is characterized by organizational growth and differentiation. That followed, we find that NPOs do not implement performancebased systems even though the transparency of individual performance differences is a source of irritation in NPOs which have adopted a function-based compensation logic. Finally, we identify reasons for this non-adoption of performance-based systems and discuss the conditions under which performance-based compensation systems can be established in NPOs. [PUBLICATION ABSTRACT]
Journal Article