RMD (Resource Management in Diffserv) QoS-NSLP model

This draft describes a local QoS model, denoted as Resource Management in Diffserv (RMD) QoS model, for NSIS that extends the IETF Differentiated Services (Diffserv) architecture with a scalable admission control and resource reservation concept. The specification of this QoS model includes a description of its QoS parameter information, as well as how that information should be treated or interpreted in the network

LC-PCN: The Load Control PCN Solution

There is an increased interest of simple and scalable resource provisioning solution for Diffserv network. The Load Control PCN (LC-PCN) addresses the following issues:\ud o Admission Control for real time data flows in stateless Diffserv Domains\ud o Flow Termination: Termination of flows in case of exceptional events, such as severe congestion after re-routing.\ud Admission control in a Diffserv stateless domain is a combination of:\ud o Probing, whereby a probe packet is sent along the forwarding path in a network to determine whether a flow can be admitted based upon the current congestion state of the network\ud o Admission Control based on data marking, whereby in congestion situations the data packets are marked to notify the PCN-egress-node that a congestion occurred on a particular PCN-ingress-node to PCN-egress-node path.\ud \ud The scheme provides the capability of controlling the traffic load in the network without requiring signaling or any per-flow processing in the PCN-interior-nodes. The complexity of Load Control is kept to a minimum to make implementation simple.\u

RMD-QOSM: The NSIS Quality-of-Service Model for Resource Management in Diffserv

This document describes a Next Steps in Signaling (NSIS) Quality-of- Service (QoS) Model for networks that use the Resource Management in Diffserv (RMD) concept. RMD is a technique for adding admission control and preemption function to Differentiated Services (Diffserv) networks. The RMD QoS Model allows devices external to the RMD network to signal reservation requests to Edge nodes in the RMD network. The RMD Ingress Edge nodes classify the incoming flows into traffic classes and signals resource requests for the corresponding traffic class along the data path to the Egress Edge nodes for each flow. Egress nodes reconstitute the original requests and continue forwarding them along the data path towards the final destination. In addition, RMD defines notification functions to indicate overload situations within the domain to the Edge nodes

First-principles Calculations of Engineered Surface Spin Structures

The engineered spin structures recently built and measured in scanning tunneling microscope experiments are calculated using density functional theory. By determining the precise local structure around the surface impurities, we find the Mn atoms can form molecular structures with the binding surface, behaving like surface molecular magnets. The spin structures are confirmed to be antiferromagnetic, and the exchange couplings are calculated within 8% of the experimental values simply by collinear-spin GGA+U calculations. We can also explain why the exchange couplings significantly change with different impurity binding sites from the determined local structure. The bond polarity is studied by calculating the atomic charges with and without the Mn adatoms

Effects Of An Educational Program On Breast Health Promotion In Elderly Women

Breast cancer risk increases with age, and disease mortality has a direct correlation to the stage of detection. Mammography remains the gold standard for early detection of the disease, yet females aged 65 and over have demonstrated a lack of compliance with recommended screening frequency. The purpose of this study was to determine the effects of an educational program on the variables of perceived susceptibility to breast cancer, benefits of and barriers to mammography, and intention to obtain mammography. The variables are constructs of the Health Belief Model which served as the theoretical framework for the study. The variables were assessed through use of Champion\u27s Susceptibility, Benefits, and Barriers Scale for Mammography Screening. The quasiexperimental, pretest-posttest, one-group study was conducted in small group settings in five senior housing facilities located in the metropolitan area of a large southeastern city in the United States. The educational program intervention was offered to a convenience sample of females aged 65 years and older. The sample (N = 13) was drawn from this population and included those women with no history of breast cancer and no mammogram in the i i i past 2 years. Statistical data included demographic analysis and paired t tests. There was no statistically significant difference in the perceived susceptibility to breast cancer, benefits and barriers of mammography, or intention to obtain a mammogram after the educational program. Women who were in compliance with mammography screening guidelines had higher perceptions of the benefits of mammography than those who were not current on their mammograms. The majority of women who chose to attend the educational program were current with the mammography screening recommendations and met the goal of 60% compliance set by the Healthy People 2 00 0 initiative. Recommendations for further research include replication of this study with a larger and more diverse sample. A similar study could be conducted specifically targeting women who are not in compliance with guidelines. Qualitative research studies could be implemented to explore the reasons why those women who are in compliance with mammography screening are compliant. The role the health care provider plays in the recommendation to obtain mammography should be ascertained through additional study