8/6/2019 abst1

1/3

An Adaptive Cross-Layer Design Approach forNetwork Security Management

Abstract In traditional Open Systems Interconnection (OSI) layered model,

many security protocols in layers are proposed to provide network security.

Because security protocols among layers are lack of cooperation, system

performance degrades due to security redundancy and furthermore causes system

overloading. Therefore, the paper proposes a cross-layer design network security

management (CLDNSM) to protect system security while improve system

performance, such as CPU utilization. First, the multiple security-dimension

quantification (MSDQ) metric is proposed to evaluate holistic system security.

Then, the proposed CLDNSM aggregates system information from layers and uses

it to obtain the optimal security settings of layers according to the MSDQ metric.

The simulation result show that system performance will be improved without

sacrificing security protect compared to OSI layered model by using CLDNSM.

Finally, to adapt to dynamic environments, security constraints will be modified

automatically in a limited range to avoid system overloads, the simulation results

show that the system overloads are under control.

8/6/2019 abst1

2/3

Architecture for Applying Social Networking toBusiness

Social networking services that enhance communications at the personal level have

recently proliferated to the point of explosive use. Individuals in all society and

cultural settings naturally and routinely use Web 2.0 tools such as wikis, blogs and

social networking services such as Facebook or LinkedIn, for personal purposes.

The penetration of these technologies into the popular culture has been pervasive

and very successful and leads by far their use at the professional or business levels.

These personal networking services are starting to penetrate the workplace and are

being applied to business purposes, which have become a major concern to CIOs.

Chief technology executives in organizations are hard pressed to be proactive and

deploy these technologies to improve business processes, increase productivity andmaintain business competiveness. The executives are also concerned in regulating

the use of these services from a security and an IT governance perspective. In this

paper we develop architecture of social networking services applied to business

purposes as well developed a process of analysis to help CIOs understand how to

engineer the application of these technologies to their business environments in a

rational manner and in a way that produces economic value while safeguarding

security. The architecture of the social networking space applied to business needs

consists of categorizing business communication modes based on the distinctcharacteristics of communication needs. To date we have identified four major

modes of business use of these communication technologies: professional

networking, professional communication, professional knowledge bases and

professional collaboration. This paper will describe the resulting taxonomy and the

attributes of the four basic groups. Major social networking service and tools in

each of the four spaces are compared and rated against the characteristics of each

business use mode and to each other. We will describe the process by which we

assist the CIO in justifying, implementing and virally diffusing the necessary

technologies once a need is identified. The diffusion process makes use of a unique

process of identifying killer uses and killer apps. Additionally, considerations

are presented to handle the important issue of security when using social

networking tools for business purposes.

8/6/2019 abst1

3/3

Adaptive Critic Design for Energy Minimization of Portable

Video Communication Devices

Portable video communication devices operate on batteries with limited energysupply. Video compression is computationally intensive and energy-demanding.

Therefore, one critical issue in portable video communication system design is to

minimize the energy consumption of video encoding so as to prolong the

operational lifetime of portable video devices. In this paper, we explore advanced

methods in adaptive system control and develop an online complexity control and

energy minimization scheme for real-time video encoding. More specifically, we

introduce a set of parameters to control the computational complexity and energy

consumption of the video encoder. We consider this video encoder as a nonlinear

control system. Based on adaptive critic design, an advanced adaptive control

method recently developed in control science, we design an online control scheme

which is able to select the best configuration of complexity control parameters to

minimize the energy consumption under rate-distortion constraints, or equivalently

maximize video quality under rate and energy constraints. Our extensive

experimental results demonstrate that the proposed scheme approaches the true

optimum performance. The proposed online complexity control and energy

minimization scheme will provide an important tool for energy minimization of

portable video devices.