The effect of cutting parameters and tool parameters on cutting forces and tool wear were investigated in high density fiberboard (HDF) peripheral up-milling using toughened ceramic cutting tools. The results showed that whether at low speed cutting or high speed cutting, the tangential forces Ft and normal forces Fr increased slowly with the increase of cutting length. The tangential forces Ft...

We consider orthogonal polynomials in two variables whose derivatives with respect to x are orthogonal. We show that they satisfy a system of partial differential equations of the form α(x, y)∂ x −→ Un + β(x, y)∂x −→ Un = Λn −→ Un, where degα ≤ 2, deg β ≤ 1, −→U n = (Un0, Un−1,1, · · · , U0n) is a vector of polynomials in x and y for n ≥ 0, and Λn is an eigenvalue matrix of order (n+ 1)× (n+ 1)...

The purpose of this paper is the synthesis of novel view points from available images captured by a calibrated system. We present the procedure of depth building and back-projection on a virtual image plane that we developed and then mainly focus on the interpolation of missing data in the resulting virtual frame by a multispectral non linear filtering technique.

Passive dynamic bipeds were first studied by McGeer (McGeer, 1990) as inspired by a bipedal toy described in (McMahon, 1984). Passive dynamic walkers can walk down a shallow slope without actuators and controllers(McGeer, 1990; 1993). McGeer has built passive walkers that exhibit steady motion using a Poincaré map, which he called as a stride function, to analyze the gaits(McGeer, 1990; 1993). ...

Using the 850μm SCUBA camera on the JCMT and a scanning technique different from other sub-mm surveys, we have obtained a 125 square arcminute map centered on the Hubble Deep Field. The one-sigma sensitivity to point sources is roughly 3mJy and thus our map probes the brighter end of the sub-mm source counts. We find 6 sources with a flux greater than about 12mJy (> 4σ) and, after a careful acc...

Research work provides efficient security which protects network resources from internal and external threats. Network virtualization is used to provide users with well-organized, controlled, and safe sharing of the networking resources. It also ensures privacy of data and integrity in Software-defined data center (SDDC) whose infrastructures is virtualized and distributed as a service. SDDC he...

This paper presents PADS, a new policy architecture that makes it easier to develop distributed storage systems. PADS is based on two key ideas. First, a distributed storage system is implemented by specifying a control plane that embodies the design policy of the system over a data plane that provides a set of common mechanisms. Second, the control plane policy is separated into routing policy...

As Internet video goes mainstream, we see increasing user expectations for higher video quality and new global policy requirements for content providers. Inspired by the case for centralizing network-layer control, we present C3, a control system for optimizing Internet video delivery. The design of C3 addresses key challenges in ensuring scalability and tackling data plane heterogeneity. First...

Over the last years, Distributed Denial-of-Service (DDoS) attacks have become an increasing threat on the Internet, with recent attacks reaching traffic volumes of up to 500 Gbps. To make matters worse, web-based facilities that offer “DDoS-as-a-service” (i.e., Booters) allow for the layman to launch attacks in the order of tens of Gbps in exchange for only a few euros. A recent development in ...

Software Defined Networking (SDN) is an important approach to network design which uses software to enable networked systems to expand data flow control. Data centre is a facility used to house computer systems and associated components, such as telecommunication equipments, storage systems and backup systems. Networks are a critical component of data centres for getting efficient outputs / res...