The Aircraft Morphing Program at NASA Langley Research Center explores opportunities to improve airframe designs with smart technologies. Two elements of this basic research program are multidisciplinary design optimization (MDO) and advanced flow control. This paper describes examples where MDO techniques such as sensitivity analysis, automatic differentiation, and genetic algorithms contribut...

A great difficulty is faced in the design of such structures due to the fact that the reduction in weight results in low rigidity and reduced vibration characteristics. Apart from the vibration is effectively controlled; it may destabilize the system and may, very often, result in complete failure of the system. Several advanced applications, such as those in jet fighters, automobiles and space...

Now-a-days Smart Grid is becoming a key element of energy strategies. Several definitions are coming in different literature but the overall meaning of these different definitions are same. Smart Grid is an intelligent monitoring, control and self healing of an electrical system with the help of information (data) communication in between the end user or generating station and control room. Thi...

We study individual job-separations and their associated destination states for all individuals in the private sector in Denmark for the period 1980 to 1995 and account for the cyclical flows. We find that individual and workplace characteristics as well as business cycle effects are important in explaining the individual behaviour. In policy simulations we look at the impact on individual tran...

In recent years, the smart home field has gained wide attention for its broad application prospects. However, families using smart home systems must usually adopt various heterogeneous smart devices, including sensors and devices, which makes it more difficult to manage and control their home system. How to design a unified control platform to deal with the collaborative control problem of hete...

This paper describes a congestion control method for TCP that adjusts the transmission rate of a TCP connection by changing not only the congestion window size as in normal TCP, but also by delaying the transmission of packets at the sender. We refer to this method as TCP with sender-based delay control, or simply SDC. SDC can keep the window size of a TCP connection above a certain threshold e...

Online games represent one of the most important revenue sources for entertainment based companies and a challenging field in multimedia application research. With vehicular networks poised to become the new wireless frontier of the Internet, car passengers embody the next consumers that will be targeted by online game providers. Yet, the high mobility and heterogeneity of vehicular networks po...

This paper adapts System-Theoretic Early Concept Analysis (STECA), an instrumental safety risk management technique, for privacy to better identify and address privacy risks early in the engineering process. The technique, STECAPriv, aims to infer a nominal functional privacy control structure based on a conceptual system description and privacy-related system behavioral constraints. Model-base...

The numerical simulation of the dynamic interaction between hydrocarbon reservoirs and wells has been an object of study for over three decades. Such a coupled approach is necessary to solve a variety of dynamic flow problems, such as pressure transient analysis (well testing) with wellbore storage, liquid loading, near-well reservoir clean-up, unstable gas lift, or the development of smart wel...

Carbon Monoxide (CO) is the most abundant air pollutant gas and accumulates rapidly to dangerous concentrations even in areas that seem to be well ventilated. Carbon monoxide detectors/alarm systems exist but people who are old, hearing impaired, partially sighted or heavy sleepers may not get the warning or find it difficult to wake up and get out in the event of dangerous concentration of CO ...