Understanding the end-to-end packet delay dynamics of the Internet is of crucial importance since it directly affects the QoS (Quality of Services) of realtime services, and it enables us to design an efficient congestion control mechanism. In this paper, we measure the round-trip time, and build a mathematical model representing its dynamics using system identification. We first measure, as th...

Open Software Foundation's Distributed Computing Environment (OSF/DCE) [8] is a platform for distributed computing. DCE is a collection of tools and services for the development, use, and maintenance of transparent distributed application systems. The communication paradigm supported by DCE is the synchronous Remote Procedure Call (RPC) [1]. RPCs can be implemented on any transport layer protoc...

In a peer-to-peer shared ride system, transportation clients with traffic demand negotiate with transportation hosts offering shared ride services for ad-hoc ride sharing in a continuously changing environment, using wireless geosensor networks. Due to the distinctive characteristic of this system—a complex and nondeterministic transportation network, and a local peer-to-peer communication stra...

In this paper, we introduce a new interesting path finding problem, which is the Skyline Trips of Multiple POIs Categories (STMPC) query. In particular, given a road network with a set of Points of Interest (POIs) from different categories, a list of items the user is planning to purchase and a pricing function for items at each related POI; find the skyline trips in term of both trip length an...

The return trip often seems shorter than the outward trip even when the distance and actual time are identical. To date, studies on the return trip effect have failed to confirm its existence in a situation that is ecologically valid in terms of environment and duration. In addition, physiological influences as part of fundamental timing mechanisms in daily activities have not been investigated...

Zcash is a fork of Bitcoin with optional anonymity features. While transparent transactions are fully linkable, shielded transactions use zero-knowledge proofs to obscure the parties and amounts of the transactions. First, we observe various metrics regarding the usage of shielded addresses. Moreover, we show that most coins sent to shielded addresses are later sent back to transparent addresse...

Instead of immediately replying as in [cri89], the master records the value of its clock and continues its work. During the next FME, it inserts the previously recorded value and the actual value of its clock in the message to the server. If the server measures the entire round trip delay, it can obtain an approximation of the value of the master clock using Cristian's reading method modified t...

The presence of the Etruscan shrew Suncus etruscus is hard to prove where its predator, the barn owl Tyto alba, is absent, because most live traps are not triggered by it. I therefore developed a new trapping method involving a feeding period of 1 week followed by one night of trapping using modified Trip Trap traps. I show here in detail how I caught four Etruscan shrews in 2010 with 24 traps ...

One of the key issues for implementing congestion pricing is the pricing granularity (i.e. pricing interval or time-scale). The Internet traffic is highly variant and hard to control without a mechanism that operates on very low time-scales, i.e. on the order of round-trip-times (RTTs). However, pricing naturally operates on very large time-scales because of human involvement. Moreover, structu...

P ass-by trips are defined as trips attracted to a particular development from the traffic “passing by” on the adjacent street. Being able to predict and apply pass-by trip percentages as part of a traffic impact analysis allows engineers to more accurately estimate the traffic impacts of a new development on the surrounding street system. Intuitively, it seems reasonable that the higher the ad...