A New Method Based on the Comparison of the Connection Strings of the Kinematic Chains to detect Isomorphism

Syed Shane Haider Rizvi^1,*

^1,*Assistant Professor, Jamia Millia Islamia (CentralUniversity), New Delhi-110025

This paper presents a new method for the detection of isomorphism in kinematic chains which plays an important role in structural synthesis of kinematic chains. The proposed method uses the new invariants called as connection string & connection value. These invariants are based on the degree of links and used as an identifier of a kinematic chain (KC). The proposed method is easy to compute, reliable and capable of detecting isomorphism in all types of KC, i.e. chains of single or multi degree of freedom with simple joints. This study will help the designer to select the best KC and mechanisms to perform the specified task at conceptual stage of design.

Keywords:  Isomorphism, Kinematic chain (KC), Connection string, Connection value, Degree of freedom.

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An Investigation into the Evolution of Wireless Mobile Technologies and their Impact on Communication

Ritesh Saraswat^1,*, Dr. Sarika Jain² and Dr. Vijay Kaushik³

^1,* Research Scholar, Department of Electronics, CMJ University, Meghalaya, India

² HOD, Department of Electronics, VIIT, Bulandshahr, UP, India

³ Director, VIIT, Bulandshahr, UP, India

The data traffic through mobile devices has grown exponentially and as a result internet is transforming itself to be based on mobile networks. Mobile devices which have been conventionally using third and fourth generation technologies have started choosing Wi-Fi as an alternative for coping with the increasing data traffic. However, simultaneous access of these technologies will improve the performance of mobile devices. Wi-Fi offloading is the solution for the future growth of the mobile broadband data traffic in deployed long term evolution [LTE] and Wi-Fi is an alternative access network technology.

Keywords: Wireless Fidelity (Wi-Fi), long term evolution [LTE].

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Synthesis and Antimicrobial Activity of Some New Diindolylmethane

Dr. Meenu  Mangal^1,*and Nitesh Saini²

^1,2,*Poddar International CollegeMansarovar,Jaipur-302020,  Rajasthan, India

E mail: drmeenumangal@gmail.com

Condensation of aldehyde or ketone with approximately substituted indoles in glacial acetic acid gave diindolylmathene. The synthesized compounds have been characterized by elemental analysis and spectral data (IR, PMR and FEB MASS). All the synthesized compounds have been evaluated for anti-bacterial and anti-fungal activities.

Keywords: Ketones, Substituted Indoles, Antibacterial and Antifungal activities.

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Mössbauer Spectroscopic Study of Effect of Ascorbic Acid on Corrosion of Mild Steel in 1.0M Sodium Sulphate Solution

Dr. Kashyap Dhoot^1,*

^1,*Department of Physics, JNVU, Jodhpur, Rajasthan, India

 A systematic study of the ascorbic acid on the corrosion of mild steel in 1.0M solution of Sodium Sulphate (controlsSolution) has been carried out using Mössbauer Spectroscopy. It is observed that the presence of ascorbic acid of strength ≥ 0.1M in corroding media (1.0M solution of sodium sulphate) influences the formation of usual corrosion species like β, γ-FeOOH and Ferrihydrite. It also retards the rate of rust formation.

Keywords:  Ascorbic acid, Mössbauer Spectroscopy,Corrosion species.

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Thermal Management Components and their Significance in Energy Efficient/Green Buildings in India: A Review

Ashok Kumar^1,* and D Buddhi²

^1,*A2Z Maintenance and Engg. Services Ltd, Sector 32, Plot No. B- 38, Gurgaon, India

aksss09@yahoo.co.in

²World Energy Edu. Foundation, Maya Plaza, Garhi Cantt., Dehradun, India dbuddhi@gmail.com

A growing world-wide concern for the conservation of energy and depletion of natural resources leads to a renewed interest in those aspects of architecture, which leads to thermal comfort in buildings with minimum consumption of conventional energy and depletion of natural resources. These aspects are termed as energy efficient design strategies. Various strategies for designing green buildings are (i)Building design parameters (iii) Efficient selection of HVAC equipments (iii) lower embodied energy of building material and (iv) Soil & water conservation. In this review various aspects like social, economical, energy, environment and sustainability of buildings with their labeling in terms of Bureau of Energy Efficiency, India has been presented.

Keywords: Thermal Comfort, Green Building, HVAC (Heating, Ventilation and Air Conditioning).

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M*- Separation Axioms

Dr. M.C. Sharma^1,*and Poonam Sharma²

sharmamc2@gmail.com and poonamsachin83@gmail.com

^1,*^,2 Department of Mathematics, N.R.E.C. College, Khurja – 203131 (U.P.) India

In this paper, we introduced the concepts of new separation axioms called M*– separation axioms i. e. M*-T_½, M*-T_b,M*-T_d – spaces by using M* – open sets in topological space and obtained several properties of such spaces.

Keywords: gM*– closed, gM*– open, rgM*– open sets, M*-T_½, M*-T_b, M*-T_d – spaces.

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Modeling of PCM Wall of a Building for the Management of Thermal Load

Ashok Kumar Saini

A2Z Maintenance and Engineering Services Ltd, Sector 32, Plot No B-38, Gurgaon- 122001, India

Email: aksss09@yahoo.co.in

A theoretical model based on enthalpy formulation and fully implicit finite difference method, has been used for one-dimensional model to predict the time-wise variation of latent heat stored and melt fraction of PCM in the designed model. The objective of this paper is to predict the thermal performance of a latent heat thermal energy storage system roof, a building component which contributes maximum heat load inside the building and comparison of heat load reduction due to addition of PCM wall. Stored heat can easily be utilized for any other application or can be flushed to the ambient.

Keywords: Enthalpy, Latent heat, (PCM) Phase change materials, Heat load.

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Synthesis of Mono and Bi Dentate Schiff’s Bases and their Complexes with M(CO)₆ [M= Cr, Mo, W]

Dr. Manoj Kumar Agarwal¹, Manish Kaushik² and Amit Singhal^3,*

¹Deptt. of Chemistry, Accurate Institute of Management & Technology, Greater Noida, G.B. Nagar, U.P., India

²Deptt. of Chemsitry, Accurate Institute of Management & Technology, Greater Noida, G.B. Nagar, U.P., India

^3,*Department of Chemical Sciences, JJT University, Jhunjhunu Rajasthan, India

The development of bacterial resistance to available antibiotics and increasing incidence of multi resistant bacterial infections in hospitals and in the community has necessitated the search for new antibacterial agents to treat the bacterial infection. Thiazoles and their derivatives form a part of Vitamin B₁ and coenzyme carboxylase. They represent a very interesting class of compounds because of their wide applications as antimicrobial, anti-inflammatory, anti-degenerative and anti-HIV activities. In the light of the above we have synthesized some new noble Schiff’s Bases and their G-6 metal carbonyl derivatives. Schiff’s bases  viz. N-[(E)-phenylmethylidene](naptho[1,2-d][1,3]thiazol-2-amine (SB¹), N-[(E)-(3-methoxyphenyl)methylidene](naptho[1,2-d][1,3]thiazol-2-amine) (SB²) react with G-6 metal hexacarbonyls in benzene to give monosubstituted derivatives  while N-[(E)-phenylmethylidene] (naptho[1,2-d][1,3]thiazol-2-ylimino)methyl]phenol  (SB³), 2-methoxy-6-[(E)-(naptho[1,2-d][1,3]thiazol-2-ylimino)methyl]phenol (SB⁴) and N-[(E)-furan-2-ylmethylidine] (naptho[1,2-d][1,3]thiazol-2-amine (SB⁵) react with G-6 metal hexacarbonyls in benzene to give disubstituted derivatives.

Keywords: Schiff bases, Metal carbonyl, Naptho[1,2-d][1,3]thiazol-2-amine.

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Intensify the I/O Performance of OODBS by Collaboration between Opportunism and Prioritization

Dheeraj Chooramani^1,* and Dr. D.K. Pandey²

^1,*Research Scholar, Department of Computer Science, JJTU, Rajasthan, India.

² Director, Dr. Pandey Professional College, Ghaziabad, UP, India

As we all know that clustering has demonstrated to be one of the most effective performance enhancement techniques for object oriented database systems. The bulk of work is done on static clustering, that is re-clustering the object base when the database is off-line. When 24-hour database access is required this type of re-clustering cannot be used. In these cases clustering is required which can recluster the object base while the database is in operation. We believe that most existing on-line clustering algorithms lack three important properties. These include: the use of opportunism to imposes the smallest I/O footprint for re-organization; the re-use of prior research on static clustering algorithms; and the prioritization of re-clustering so that the worst clustered pages are re-clustered first. In this paper we present a opportunistic priority clustering framework in which any existing off-line clustering algorithm can be made on-line and given the desired properties of opportunism and clustering prioritization. Most importantly it allows the created algorithm to have the properties of I/O opportunism and clustering prioritization which are missing in most existing dynamic clustering algorithms. We have used OPCF to make the static clustering algorithms Graph Partitioning and Probability Ranking Principle into dynamic algorithms. We have used the latest version of VOODB 2007 and OCB 1998 in comparison to other researchers.

Keywords: Object-oriented database system, Static clustering, Dynamic clustering algorithms, Prioritization, Opportunism.

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Some Flexible Software Reliability Growth Models using Two-Dimensional Approach

Ompal Singh^1,*, Jyotish N.P. Singh², Jyotish Kumar³ and P.K. Kapur⁴

^1,2,3Department of Operational Research, University of Delhi, Delhi, India.

⁴Amity International Business School, Amity University, Noida, U.P., India.

The concern for software reliability has grown over a period of time especially with the advent of real life systems such as satellite and shuttle control, telephone, internet and banking services. In today’s life the computers are being used to monitor and control safety critical and civilian systems with a great demand for high-quality software products. So reliability is a primary concern for both software developers and software users. The new outlines of competition and collaboration that have arisen in software engineering as a result of the globalization process have an impact on the entire software process. The need is growing to estimate, risk assess, plan and manage the development of these complex software systems to ensure a smooth run of life. Therefore to capture the combined effect of testing time and testing coverage we propose a two dimensional software reliability growth model. We have used cobb-douglas production function to develop the two dimensional model incorporating the effect of testing time and testing coverage on the number of faults removed in the software system. In this paper, we present two software reliability growth models incorporating logistic distribution function and Exponentiated Exponential distribution function respectively. The model developed is validated on real data set.

Keywords: Software reliability growth models (SRGMs), Cobb–Douglas production function, Logistic distribution function, Exponentiated exponential distribution function.

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Performance Studies of Refrigerated Van having PCM for Generating Off Site Refrigeration Effect

Munesh Kumar Sharma^1,* and D. Buddhi²

^1,*Millennium Institute of Technology, Biharigadh, Saharanpur-247001, India

²Shivalik College of Engineering, Shimla Bypass, Dehradun-248197, India

A refrigeration system incorporating phase change material (PCM) is proposed to maintain refrigerated van at the desired thermal conditions. The advantage of using PCM to maintain low temperatures is that a conventional refrigeration system does not have to be located on-board the vehicle. In addition, Thermal Energy Storage through Phase Change material has been used for wide applications in the field of air conditioning and refrigeration especially at industrial scale. The specific use of this Thermal Storage has been for Energy Storage during low demand and release of this Energy during peak loads with potential to provide energy savings due to this. The system consumes less energy and produces much lower local greenhouse gas (GHG) emissions. The phase change material is charged by a refrigeration unit located off the vehicle when stationary. The PCM is discharged and provides cooling when in service. A new PCM with a lower cost than currently available PCMs was developed, suitable for maintaining the refrigerated van at a temperature of 5^oC. The PCM has a melting temperature of -15.2^oC and a latent heat of 284 kJ/ kg. The use of latent heat storage is especially suited to the storage of energy to prolong the food preservation time of refrigerators fresh food compartment & also improve the cooling cycle by its release at appropriate time. A prototype system was constructed and test results proved that the proposed refrigeration system is feasible for mobile transport.

Keywords: Phase change material (PCM), Thermal energy storage, Greenhouse gas (GHG).

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