This paper studies the classic problem of finding heavy hitters in the turnstile streaming model. We give the first deterministic linear sketch that has O( −2 log n · log∗( −1)) rows and answers queries in sublinear time. The number of rows is only a factor of log∗( −1) more than that used by the state-of-the-art algorithm prior to our paper due to Nelson, Nguyen and Woodruff (RANDOM’12). Their...

Participation of people is the most important factor in providing high quality of service in mobile sensing applications. In this paper we study coupons as incentives in order to stimulate users participation, especially in applications that rely on real-time data. We argue that coupons do not only function as incentives to increase user participation, but they can also direct more people to th...

biosensors are classes of sensors in which at least a biological process is used in sensing procedure. they are generally composed of three parts: a sensing element, a transducer, and a signal processor (or detector). they can be categorized by type of sensing materials or by detection techniques. from their invention time up to now, various biological species have been analyzed using variety o...

The focus of this paper is to consider the compressed sensing problem. It is stated that the compressed sensing theory, under certain conditions, helps relax the Nyquist sampling theory and takes smaller samples. One of the important tasks in this theory is to carefully design measurement matrix (sampling operator). Most existing methods in the literature attempt to optimize a randomly initiali...

   Today, remote sensing technology is used in all scientific and informing fields around the world, and it has achieved to very satisfying results. In the present study, by using remote sensing technology and application of satellite photographs the coefficient of curve number was estimated with high accuracy and pick discharge of the flood was calculated with a good accuracy. In this study, i...

results comparative analysis of predicted amino acids in the phylogenetic tree showed high similarity between c. glabrata and s cerevisiae. besides, c. glabrata demonstrated the capability to grow in glucose levels as low as 0.01% in the spot dilution assay. in qrt-pcr analysis, differential expressions were observed in selected genes when c. glabrata was subjected to different glucose concentr...

Abstract. The urban climate literature has highlighted the remarkable prominence of nighttime UHI phenomenon. During effects become more evident due to greater thermal inertia materials used in fabric. It is during night when heat accumulated materials, especially contexts waves, can generate significant health risks. low cooling capacity construction negatively affects comfort and dwellers. Ho...

the preparation of vegetation cover maps by used the land inventory and a traditional method has a lot of cost and time. but today, remote sensing is one of the main sources of data collection and information production for study and monitoring land resources, and was efficient tools for providing quickly and timely data and information needs for program planning in the natural resource filed. ...