Informatics Publishing Limited

A. N. Pathak , Hari Shanker , P. K. Mukherji

Abstract

A catena study of the physical and chemical properties of four soil profiles under cultivation and forest cover was made. It was observed that porosity, water holding capacity, sticky point moisture and hydraulic permeability of soils under forest cover were higher than those of soils under cultivation. Soils under the forest cover exhibited more aggregation than the cultivated normal soils, also that the aggregates were bigger in size. Cation-exchange capacity of forest soil was more than the cultivated soil. On the other hand, SiO₂/R₂O₃ ratio showed a decreasing tendency in the soils under forest cover. The data for dispersion ratio of the soil indicated that the soils under cultivation are more susceptible to erosion.

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Ruchika Gupta ¹, Pallavi Sharma ¹, Amit Kumar ², A. N. Pathak ²

Affiliations
1 Department of Computer Science, Amity School of Engineering & Technology, Amity University Rajasthan, Jaipur (RJ), IN
2 Amity Institute of Biotechnology, Amity University, Rajasthan, IN

Abstract

Energy consumption and quality of service (QoS) are the two primary concerns in the development of today’s pervasive computing systems. While most of the current research in energy-aware real-time scheduling has been focused on Hard Real-time Systems, a large number of practical applications and systems exhibit more weakly hard real-time. Weakly Hard Real-time Systems can tolerate some occasional deadline misses. This feature provides a unique opportunity to reduce system’s energy.

Our goal is to minimize the system energy (energy required by frequency dependent and independent component) rather than minimization of processor energy only. We use the term frequency dependent component to refer a processor and frequency independent for memory or peripheral devices. We aim to minimize the system energy for weakly hard real time systems modeled with constraint using a combination of Dynamic voltage scaling (DVS) and Dyanamic power down (DPD). The QoS requirements are deterministically quantified with imprecise concept or by (m, k) model, while energy minimization is done in two phases, in the first phase the feasibility and energy reduction at the task level is achieved while further reduction in the energy consumption is accomplished in the improvement (second) phase at the job level. We propose a new portioning strategy to decide a job to be mandatory or optional with speed assignment for each task is done based on the greedy speed assignment technique in phase 1. While in the second phase we adopt the preemption control technique by delaying the higher priority jobs without missing its deadline. Experiments were performed and it was found that our proposed techniques improve significantly in terms of both the energy minimization as well as QoS over the existing one and over wide range of parameter including variation of m & k.

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Manu Sehgal ¹, Divya Christopher ², A. N. Pathak ³

Affiliations
1 GGDSD College, Chandigarh, IN
2 Amity University, Noida, IN
3 NITTTR, Chandigarh, IN

Abstract

Bandwidth management is the process of measuring and controlling the communications (traffic, packets) on a network link, to avoid filling the link to capacity or overfilling the link, which would result in network congestion and poor performance. Riverbed Technology is a designer and manufacturer of WAN optimization and network traffic measurement products.Riverbed Technology's world headquarters is located in San Francisco, California. Riverbed was founded in 2002 by Jerry Kennelly and Dr. Steve McCanne.

Keywords

Token Bucket, Weighted Fair Queing, Explicit Congestion Notification, Top Node Algorithms, Packet Sniffer.

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Monika Gupta ¹, Neeru Malhotra ², A. N. Pathak ³

Affiliations
1 ECE Department, SSIET, Derabassi, IN
2 DAVIET, Jalandhar, IN
3 Applied Sciences, NITTTR, Chandigarh, IN

Abstract

To meet increasing bandwidth demands, Gigabit Ethernet passive optical network GEPON is becoming technology of choice in optical networks. This study establishes simulation and performance evaluation of GEPON FTTH system(with and without dispersion compensation) with video broadcast at 1550nm and voice over IP and high speed internet at 1490nm at 40Gbps data link downstream configuration with 1:16 splitting and distance of 20km and 30km. Also fuzzy approach is used to calculate insertion loss of mach zender modulator.

Keywords

FTTH, PON, EPON, GEPON.

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Manu Sehgal ¹, Divya Christopher ², A. N. Pathak ³

Affiliations
1 GGDSD College, Chandigarh, IN
2 Amity University, Noida, IN
3 NITTTR, Chandigar, IN

Abstract

Knowledge discovery is a concept of the field of computer science that describes the process of automatically searching large volumes of data for patterns that can be considered knowledge about the data. It is often described as deriving knowledge from the input data. This complex topic can be categorized according to 1) what kind of data is searched; and 2) in what form is the result of the search represented. Knowledge discovery developed out of the Data mining domain, and is closely related to it both in terms of methodology and terminology. The most well-known branch of data miningis knowledge discovery, also known as Knowledge discovery in Database (KDD). Just as many other forms of knowledge discovery it creates abstactions of the input data. The knowledge obtained through the process may become additional data that can be used for further usage and discovery.

Keywords

Data Model, Conceptual, Logical, Physical, Schema.

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