Papers

877

An approach towards the query handling in mobile cellular network




















 

S Mitra & S Das (Bit)

A data management scheme for processing different types of queries in a mobile cellular environment is proposed. The present work is able to give answers of different types of queries such as, proximity query, personal query, and query for any broadcast type of data by exchanging a few number of messages among different components of the network such as, mobile unit, base station, and mobile switching centre. The scheme uses two databases stored at base station and mobile switching centre. Locations of all location dependent data are represented in cylindrical polar coordinates, and the database at each base station keeps the data of the fixed objects exclusively in its locality. A suitable Query Language is proposed here to process the queries in the mobile cellular environment. Exhaustive simulation work is done to study the performance of the system for getting satisfactory answer of the query by varying different parameters like, query arrival probability and time.

IPC Code: Int. Cl.⁷ : H  04  L  12/28

888

AHP-based formal system for R&D project evaluation











 

S Suresh Kumar

The paper dwells on a judgemental model for R&D project evaluation using multifactor criteria based on hierarchic considerations. The idea is to employ formal tools in quantification of subjective evaluations where expert judgement is involved. Comparative evaluations on a priority scale are converted to quantities using the eigen vector concept. This is also the essence of the Analytic Hierarchic Process (AHP) of Saaty which as a technique is employed for R&D project evaluation. It is argued that AHP is more effective than scoring charts and utility models in priority setting based on judgemental evaluation through peer rating.

897

Public funding of research in biological sciences during the eighth plan: A case study




 

Archana Gupta

The Government of India is committed to exploiting the natural resources of the country for the economic well being of the people. One of the policy instruments employed is formulation of successive Five Year Plans within which are dovetailed Annual Plans to fulfill national socio-economic objectives. S&T plays an important role in the achievement of these objectives. The government policy framework will continue to encourage entrepreneurship, development of indigenous technology through investment in R&D, bringing in new technology wherever needed. Of particular interest here is the Eighth Plan strategy for developments related to biological sciences.

902

On WAN usage patterns in local environment




Chandrashekhar G Dethe & D G Wakde

Today’s complex network traffic is the aggregation of traffic generated by individual sources on network. Therefore, access pattern of users is of immense importance in order to model and simulate the network traffic using user characteristics. In this study, parameter matrix to characterize the individual user is identified and their correlation analysis is computed in order to find their independence, useful criterion for modeling.

IPC Code: Int. Cl.⁷ : H  04  L  12/28

908

Mathematical model for prediction of soil microbial functional attributes affected by pulp and paper industry effluent


 

S Kumar, K K Dube, M Saxena & J P N Rai

A mathematical model to study the impact of pulp and paper industry effluent on some functional attributes of soil microbes is proposed and analyzed. In modeling the system, it is assumed that the microbial biomass and activity increase exponentially with decreasing load of pollution at distance from the source of pollutants’ origin. The model developed is applied to soil microbial biomass C and N, respiration and dehydrogenase activity to obtain the projected data of agro-ecosystem soil fed with the effluent during crop irrigation.

IPC Code: Int. Cl.⁷ : C  02  F  3/34

913

Methanolysis of Pongamia pinnata (karanja) oil for production of biodiesel














 

L C Meher, S N Naik & L M Das

The present study deals with the transesterification of Pongamia pinnata oil by means of methanol to study the feasibility of methanolysis process by using potassium hydroxide catalysts. The biodiesel was characterized by TLC and HPLC analysis to determine the fatty acid methyl esters, mono-, di- and triglycerides and glycerol.

IPC Code: Int. Cl.⁷ : C  12  P  7/02

919

Predicting drainage quality for sustainable exploitation of coal























 

S Siddharth, A Jamal, R K Tiwary & B B Dhar

In this paper, a technique has been suggested to know the quality of mine drainage even before the start of mining operation. The coal and associated rock samples are collected from the mine site. The geo-chemical properties are measured in terms of R-pH, pollution production potential (PPP) and acid neutralization potential (ANP). On the basis of geo-chemical properties and weathering tests, it is found that except sandstone, all other litho-types such as coal, shale, and shaly coal have the potential to deteriorate water quality and whatever the water pollutants present in the mine water are just because of interaction of these rock units with water.  The techniques suggested for the prediction of drainage quality may prove helpful and can identify rock types likely to produce water contaminants during their exposure to atmosphere in a mine.

927

Multielectrode resistivity imaging technique for the study of coal seam













 

K K K Singh, K B Singh, R D Lokhande & A Prakash

The Multielectrode resistivity imaging method has been used to study the coal seam located in the northern part of Jharia Coalfield of Dhanbad district. This method has been applied on experimental basis to know the efficacy of this technique. The improvement of resistivity methods using multi-electrode arrays led to an important development of electrical imaging for subsurface surveys.

IPC Code: Int. Cl.⁷ : G  01  N  3/38

931

Structural analysis of coal ash based mine prop






















Debasis Deb & Yoginder Paul Chugh

This paper emphasizes structural analysis of post using finite element analysis and theoretical models. For small size post, an axially symmetric model is utilized to analyze stress distribution in the post and sheath, where applicable. Analyses are directed towards obtaining the distribution of confining pressure on coal ash based grout due to sheathing material. Buckling of big size post is also studied. An extensive laboratory testing is conducted to obtain engineering properties of coal ash based and crib members. Full scale buckling testing of coal ash based post is also carried out to compare results obtain from testing of timber support.

IPC Code: Int. Cl.⁷ : C  10  B 25/00

938

Application of carbon aerogel for electrolytic removal of mercury from aqueous solutions















 

Parul Rana Madaria, N Mohan, C Rajagopal & B S Garg

A study has been carried out to determine the feasibility of electrochemical removal of mercury ions from aqueous solution using carbon aerogel electrodes. In this work the influence of three parameters viz., initial concentration (2-8 mg/L), pH (2-9), and charge (0.3-1.3 Ah) on the percentage removal of mercury are examined using response surface methodological approach. The experiments are statistically designed using box-behnken experimental design model. This model is also used to derive a second order polynomial equation, which can be used to optimise the key parameters for maximising the removal percentage.

IPC Code: Int. Cl.⁷ : C  25  B  1/4

944

Removal of colour and detoxification of pulp and paper mill effluent by microorganisms in two step bioreactor
















 

Pratibha Singh & Indu Shekhar Thakur

Eight fungal isolates and a bacterial community comprising  four strains was isolated from pulp and paper mill effluent. Decolourization and phenol reduction of pulp and paper mill effluent was determined by fungi and bacterial isolates. Among the fungi, Paeciloymces sp., exhibited significant reduction in phenol (40 per cent), lignin (66 per cent), COD (75 per cent) and colour (81 per cent) in 100 L sequential bioreactor supplemented with 1 per cent carbon and 0.2 per cent nitrogen source at 6 h retention time. However the treated effluent of fungus subsequently treated by bacterial strain, Microbrevis luteum, showed reduction in phenol (77 per cent), colour (84 per cent), COD (83 per cent ) and lignin (72 per cent) on day one.

IPC Code: Int. Cl.⁷ : C  02  F  3/00

949

Study of spatial variability and enrichment of selected toxic elements in ambient particulate matter around a phosphatic fertilizer plant in central India
 

Rajnikant Sharma & Shamsh Pervez

Up and downwind sampling methodology is adopted to assess the contribution of some selected toxic elements in ambient air around a phosphatic fertilizer plant located in southeastern part of Chattisgarh State of India. Ambient air sampling for Respirable Suspended Particulate Matter (RSPM) and Non-Respirable Suspended Particulate Matter (NRSPM) were carried out from September 2000 to June 2001 and fifteen selected elements (Fe, CA, Mg, Na, K. Al, Zn, Mn, Cu, Cr, Co, Cd, Pb, As, Hg and Ni) were analyzed by standard methods of chemical analysis.

IPC Code: Int. Cl.⁷ : C  01  N 3/00

Book Review

957

·       E-Government — From vision to implementation — A practical guide with case studies Reviewer :     

       L P Rai

Sci-Tech Update

958

·         Budget shortages affect earthquake network

·         Brass instrument optimization software — BIOS

·         The correlithm object system: A new computational paradism

·         Aesthetic cognition in computational design of artificial intelligent systems

·         A computational perspective on twenty-first century music

·         A neurobiological interpretation of semiotics: meaning, representation and information

·         Process grammers

·         Computational aesthetics

·         Dr Java

·         Bridging digital divide: amida simputer

·         J Fugue: Java API for music programming