009854   Lu W C;Duan L;Faye R M;Camino F M (7 avenue Edouard Belin, 31055 Toulouse, France, LAAS-CNRS, 7 avenue Co, , ) : Neural approach for the identification of the implicit differential flatness of aircraft flight dynamics. Indian J Math mathl Sci 2006, 2(2), 123-35.

Increasing air traffic density as well as new strict environmental regulations make necessary to develop more advanced guidance systems for civil transportation aircraft since complex maneuvers may appear necessary to meet the corresponding safety, efficiency and environmental constraints. In this paper. following the existing differential flatness definitions, flight guidance dynamics are shown to be implicit differentially flat with respect to the inertial position of the aircraft. To overcome the numerical difficulty implied by the implicit character of this flatness property and make it useful for airborne applications, artificial neural networks are introduced to capture the differential relationship between flat outputs and guidance directives. These will enable the aircraft to perform complex trajectories or to detect failure modes of the auto flight systems. The results of a numerical application with respect to the implicit differential flatness relation are displayed.

10 illus, 9 ref

008845   Singh D;Singh Y;Singh K P (Electronics and Computer Engineering Dep, Indian Institute of Technology, Roorkee-247 667, Email: dharmfec@iitr.ernet.in) : Polarization ratio approach to retrieve the bare surface roughness at x-band. IETE J Res 2007, 53(4), 295-302.

An observation has been carried out at different incidence angle by X-band scatterometer to retrieve the surface roughness when moisture was kept constant. Polarization ratio approach has been proposed to retrieve the surface roughness at constant moisture. A co-polarized (Horizontal-Horizontal; HH and Vertical-Vertical; VV) ratio (p= ρ₀HH /ρ₀

5 illus, 3 tables, 25 ref

008844   Sharma A K;Goel A (Computer Engineering Dep, YMCA Institute of Engineering, Faridabad-121 006, Email: ashokkale2@rediffmail.com) : A power efficent self adjusting routing protocol for mobile ad hoc networks. IETE J Res 2007, 53(4), 365-74.

The popularity of portable computing devices coupled with the recent developments in computing, has not only rendered the mobile and wireless networks important but the design of flexible, efficient and portable routing algorithms for highly mobile ad hoc networks a very difficult task. The existing routing protocols suffer from many drawbacks such as existence of non-overlapping zones leading to network partitions due to inefficient use of battery power, network wide flooding, processing overheads etc. In this paper, a protocol called "Power Efficient Self-Adjusting Routing protocol (PESAR)" has been designed.

10 illus, 13 tables, 19 ref

008843   Garg P C;Singla N (Statistics Dep, Punjabi Univ, Patiala-147 002, Email: neelgagan2k3@yahoo.co.in) : Intermittently available server queueing system with feedback. Int J agric statist Sci 2007, 3(2), 471-80.

Intermittenty available server queueing system with feedback is studied. Arrivals and departures are following Poisson distribution. Availability of server follows an exponential distribution. Steady-state queue length probabilities are obtained. Transient-state queue length probabilities and Laplace transforms of the generating function of transient-state queue length probabilities and busy period distribution are obtained. A few particular cases of interest are also derived.

8 ref

007020   Srivastava A K;Mange Ram (Central Library, Banaras Hindu University, Varanasi-221 005) : Meta data searching: Google most powerful search engine for librarians. Indian J Inf Libr Soc 2006, 19(3-4), 181-5.

Google search engine is powerful tool for meta searching of digital databases. The Google search engine is most popular among librarians and types of user. Highlights the search engines available on webs especially Google search engine.

8 ref

007019   Gupta S (NO, DLIS Univ of Jammu, Jammu) : Digital preservation: challenges and strategies. ILA Bull 2006, 42(4), 24-27.

13 ref

004894   Singh S K (Genetics and Breeding div, Central Institute of Research on Goats, Makhdoom, P.O. Farah, Uttar Pradesh-281 122) : Brendex: a computer programme for estimation of general and restricted selection indices for genetic gains. Indian J Anim Sci 2006, 76(7), 546-8.

Brendex, a computer programme was developed in Fortran-77 for construction of general and restricted selection indices for genetic gains in livestock species. This programme can utilize information on 10 traits at a time. The programme is free and can be downloaded from ftp: //cirg.res.in/pub/skstat/brendex. The programme runs in Dos and Windows operating system but it can be easily transported to any of the operating systems. The source code follows GPL licence (www.gnu.org) which allows users to use to modify it and distribute it freely.

4 tables, 8 ref

004893   Kumbar M;Rajun V (Library and Information Science Dep, Mysore Univ, Mysore, Karnataka, Email: mallinathk@yahoo.com ) : Use of internet in engineering colleges of three district of Karnataka state: a study. ILA Bull 2007, 43(1), 13-18.

Study Aimed at the Internet use and its impact among the Engineering colleges of Mysore, Hassan and Mandya districts. Structured questionnaire were designed to collect the data. Out of 100 questionnaires 90 filled in questionnaires were received back. The survey found out that, 92.22% of the total respondents use Internet only for e-mail, 86.66% respondents are using Google as the favorite search engine for accessing information, and 53.33% were not satisfied with the printing and down loading facilities available in their respective colleges. The study also highlights the suggest ions made by the faculty and the students of the respective engineering colleges.

11 tables, 6 ref

004892   Borse T R (Libarary & Information Science Dep, North Maharashtra Univ, Maharashtra) : Digital information resources management. IASLIC Bull 2006, 51(2), 48-53.

Paper reveals the different digital information sources, their maintenance and management for further reading and use.

27 ref

003923   Srivastava A;Patel H S;Gupta P K (Laser Biomedical Applications and Instrumentation Div, Raja Ramanna Centre for Advanced Technology, Indore-452 013, Email: atulsr@cat.ernet.in) : View-based approach for the reconstruction of optical properties of turbid media. Curr Sci 2007, 93(3), 359-65.

View-based approach for the computation of updates of optical parameters of a turbid medium is discussed. The approach differs from conventionally employed reconstruction techniques in terms of implementation of the computed updates. Simulation studies in frequency domain for tissue phantoms approximated by slab geometry have been presented. Results of the study show that the proposed inversion scheme, wherein the projection data corresponding to each view has been handled individually, works well in predicting the presence of an inhomogeneity. A comparison with the reconstruction results of conventionally employed inversion schemes involving simultaneous handling of projection data from all the view angles shows that the accuracy of the proposed scheme in predicting the presence of single inhomogeneity is higher and the reconstruction is also relatively free of artifacts. On the other hand, in the presence of multiple inhomogeneities, though the simultaneous handling of all the views gives better reconstruction, the updates obtained by the proposed scheme can be employed as close a priori information about the approximate positions of the inhomogeneities, thereby reducing the overall dimension of the Jacobian matrix to be inverted and hence making the convergence faster.

8 illus, 26 ref

003922   Kumar N (NO, Raman Research Institute, Bangalore-560 080, Email: nkumar@rri.res.in) : Resistance without resistance: an anomaly. Curr Sci 2007, 93(3), 357-9.

Elementary two-terminal network consisting of a resistively (R) shunted inductance (L) in series with a capacitatively (C) shunted resistance (R) with R =√L/C, is known for its non-dispersive dissipative response, i.e. with the input impedance Z₀(ω) = R, independent of the frequency (ω). In this communication, we examine the properties of a novel equivalent network derived iteratively from this two-terminal network by replacing everywhere the elemental resistive part R with the whole two-terminal network. This replacement suggests a recursion Z_n+1 (ω) =f(Z_n(ω)), with the recursive function f(z) = (iωLz/iωL+ z) + (z/1 + iω Cz). This recursive map has two fixed points - an unstable fixed point Z_u<42> = 0, and a stable fixed point Z_s<42> = R. Thus, resistances at the boundary terminating the infinitely iterated network can now be made arbitrarily small without changing the input impedance Z (=R). This, therefore, leads to realizing in the limit n →∞, an effectively dissipative network comprising essentially the non-dissipative reactive elements (L and C) only. Hence the oxymoron-resistance without resistance! This is best viewed as a classical anomaly akin to the one encountered in turbulence. Possible application as a formal decoherence device - the fake channel - is briefly discussed for its quantum analogue.

3 illus, 9 ref

003921   Dilliwar V;Sinha G R;Thakur K (Electronics & Tele. Engg. Chhattisgarh Institute of Technology, , Rajnandgaon, Chhattisgarh) : Image contrast enhancement using java. Acta Cienc Indica-Phys 2007, 33(2), 235-40.

High contrast images are common in night scenes and other scenes that include dark shadows and bright light sources. These scenes are difficult to display because their contrasts greatIy exceed the range of most display devices for images. As a result, the image contrasts are compressed or truncated, obscuring subtle textures and details. Humans view and understand high contrast scenes easily adapting their visual response to avoid compression or truncation with no apparent loss of detail. By imitating some of these visual adaptation processes, we developed Java based algorithm for the improved display of high contrast images A Java based contrast enhancement algorithm originally developed for digital photography was adapted and improved for use with medical images. It handles modalities that generate digital images with over 256 brightness values per pixel, such as CT, MR and digital radiography (DR). The initial evaluation performed using a set of digitized films and several DR images showed the algorithm could optimize the images for viewing soft tissue, bony detail, or the entire image.

3 illus, 6 ref

003336   Thiyagarajan M;Manikandan R (NO, SASTRA Univ, Thajavur) : Data mining and wavelet tools for VLSI cell placement. Int J Comp Applic 2009, 4(1), 1-5.

Deals with a new approach lor the computation of area occupied by cells in a VLSI Design. This is possible through a Data mining tool and the expression for the functional values at dyadic points on the mother Wavelet.

2 illus, 6 ref

003335   Thiyagarajan M;Anand V (School of Computing, SASTRA Univ, Tahnjavur) : Randomized routing algorithms. Int J Comp Applic 2009, 4(1), 13-8.

Given a network topology, a routing algorithm specifies for each pair of nodes, a route or a sequence of edges connecting a pair in the network. The gaps in the earlier descriptions by [Michael Mitzenmacher and Eli Upfal] have been bridged to give a complete description of the solution techniques. Author considered the hypercube and butterfly networks in this paper.

6 ref

003334   Singaraju J;Sandhya Rani K;Usha Rani K (Computer Science Dep, Sri Padmavathi Mahila Visvsvidhyalayam, Tirupati-517 502) : Two phase encryption using artificial neural network techniques. Int J Comp Applic 2009, 4(1), 47-55.

With the introduction of the computer, the need for automated tools for protecting files and other information stored on the computer became evident. This is especially the case for a shared system, such as a time-sharing system, and the need is even more acute for systems that can be accessed over a public telephone network, data network, or the Internet. Cryptography is probably the most important aspect of communications security and is becoming increasing important as a basic building block for computer security. Using the enciphering technique to improve the easiness of encryption and security of a cryptosystem is the major purpose of this paper. Proposed a two phase artificial neural network encryption model as an enhanced cipher.

4 illus, 13 ref

003333   Saidi W;Bouzid A;Ellouze N (NO, LSTS, ENIT-Tunis Le Belvedere B.P. 37, 1002 Tunis, Email: saidiwafa@yahoo.com) : MPM method and dypsa algorithm evaluation for GCI detection in a noisy speech signal. Int J Comp Applic 2009, 4(1), 57-70.

Deals with the evaluation and the comparison of two methods for determining glottal closure instants (GCIs) from the speech signal. These methods are the Multi-scale Product Method (MPM) and the Dynamic Programming Phase Slope Algorithm (DYPSA). The MPM consists of determining abscissa of peaks appeared on the product of wavelet transform coefficients at three adjacent dyadic scales. The wavelet used to compute the product is the quadratic spline function. However, the DYPSA algorithm is based on the group delay function to generate the GCI candidates and the dynamic programming technique to select the true GCIs. The comparison of the two algorithms is operated without noise and with additive Gaussian noise at various SNR levels. The evaluation is operated on the Keele University database. Results show that the MPM is more robust to noise than the DYPSA with a good detection rate nearby 90% at an SNR level of 0 dB and a small false alarm rate. Besides, the DYPSA is more sensitive to noise with a good detection rate of 20% at 0 dB and a high false alarm rate surpassing 70%.

12 illus, 21 ref

003332   Sahoo G;Tiwari R K (Information Technology Dep, B.I.T. Mesra, Ranchi, Jharkhand) : Hiding secret information in movie clip: a steganographic approach. Int J Comp Applic 2009, 4(1), 103-10.

Establishing hidden communication is an important subject of discussion that has gained increasing importance nowadays with the development of the internet. One of the key methods for establishing hidden communication is steganography. Modern day steganography mainly deals with hiding information within files like image, text, html, binary files etc. These file contains small irrelevant information that can be substituted for small secret data. To store a high capacity secret data these carrier files are not very supportive. To overcome the problem of storing the high capacity secret data with the utmost security fence, we have proposed a novel methodology for concealing a voluminous data with high levels of security wall by using movie clip as a carrier file.

4 illus, 15 ref

003331   Rajavarman V N;Rajagopalan S P (Information Technology Dep, Dr. M.G.R. Univ, Chennai-95) : Optimisation of significant GA factors using statistical tools. Int J Comp Applic 2009, 4(1), 7-12.

An approach to GA efficiency improvement has been developed in this paper. This approach is based on using statistical methods of inference in order to: (1) identify GA factors significantly affecting the efficiency of Genetic Algorithms, and iff) to find the optimal values for such factors. It will be shown that after substitution of the optimal values obtained using the developed approach, the search speed of Genetic Algorithms substantially improves.

1 illus, 1 table, 7 ref

003330   Gadgil N J (Practice School Intern, Tensilica Technologies (India) Pvt. Ltd, Pune) : Processor-optimized design and implementation of sampling rate converter (SRC) blocks. J Coop Univ Res Ind Enterpr 2010, 3(2), 23-34.

Different audio compatible devices work at different sampling rates. There are audio data formats which are standardized for specific applications. In this scenario, sampling rate conversion (SRC) becomes an integral part of a core processing unit. Also, to improve computational efficiency, it is always advisable to process the data at lower sampling rates. Hence, rate alternation unit plays a key role in optimized implementation of any digital signal processing unit. This paper presents an efficient method to design sampling rate converter blocks. Tensilica's HiFi2 Audio Engine instruction set architecture is specifically designed to perform the typical audio processing tasks in an optimized fashion. Exploiting the resources and capabilities of Tensilica's Xtensa processor, the core processing loop is optimized with tightly fit instructions. The crux of this design is to exercise a finite impulse response (FIR) filter with the concepts of polyphase decomposition and circular buffering.

7 illus, 5 tables 11 ref

003329   Dewan K;Johri A;Mishra R K (NO, Faculty of Natural Science, Jamia Millia Islamia Univ, New Delhi) : Development of secured cyber applications: issues, challenges and methodlogies. Int J Comp Applic 2009, 4(1), 19-24.

Cyber security, once an issue of interest for Intelligence Agencies of the various countries, has gained importance in almost all sectors of life wherever the new technology based advancements have taken place around the globe. Governments, Universities, Business houses all have become vulnerable in one way or the other in today's cyber era where terrorism (w.r.t. violence as well as economic terrorism) has also become a prime issue of concern. The gravity of the threat has been well realized by all and a great effort is being put in developing methodologies and framework so that the newly developed cyber application provide good security while ensuring the authorized access to appropriate valid users. This paper presents the ongoing efforts and development of Framework for the Development of Secured Cyber Application.

2 illus, 9 ref

003328   Bamrara A;Singh G (NO, National Institute of Technology, Uttarakhand-atulbamrara@gmail.com) : Impact of phishing on financial institutions. J Coop Univ Res Ind Enterpr 2010, 3(2), 35-43.

Modern businesses heavily rely on corporate IT networks and their access with the global Internet as the backbone of their sales, advertising, operation, production and financial systems. Public can hop outside their states and national boundaries to explore vast stores of information and access international opportunities. Computer networks have made the information highly distributed among their divisions, business partners, suppliers, and customers with great efficiency of exchanging information speedily and flawlessly. The E-... services have roofed the world economy and are producing amazing results. But, too often IT professionals fail to understand the level of potential risk and liability for dealing with cyber attacks. Cyber attacks on the Organization's MIS are getting higher in the form of Phishing, Pharming, Vishing and so on. It has become a profession and with comparatively low technical skills, a cyber criminal can hack the information and penetrate into the information system. Cyber criminal gangs are increasingly motivated by the potential gains from extortion, theft of credit card details, and abuse of private information. Attackers are now creating global networks that support coordinated criminal activity. All this sophisticated criminal activity has driven up the costs of defense and recovery. The paper finally attempts to focus the impacts of Phishing, a blazing cyber crime for financial institutions and customers as well.

5 illus, 10 ref

003327   Ananthan T V;Nakkeeran R (Computer Science Dep, Dr. M.G.R. Univ, Chennai, Tamil Nadu) : Amelioration of beba in distributed mac protocol to reduce the waiting time of a station in wlan (802.11). Int J Comp Applic 2009, 4(1), 71-6.

Deals with in-depth study of the Binary Exponential Back-off Algorithm (BEBA) that is widely used in distributed Medium Access Control (MAC) protocols to avoid collision when more than one machine try to access the medium. Begin with a generalized framework of modeling of BEBA. Then identify a key difference between BEBA and the commonly assumed p-persistent model. Due to the characteristics of BEBA it checks the medium only after the timer becomes zero, but the proposed BEBA frequently checks the medium whether it is idle or not . Also it uses a contention window to make the slot succeeding a busy period has a uniform contention rate from other slots. This causes access to a slot ta be uniform and independent on whether or not the slot immediately follows a busy period. We propose'a detailed model to bate the waiting time of station which is in the contention window. From reducing the waiting time of a station it expedite the medium access. It is demonstrated that the proposed model is an accurate characterization of BEBA algorithm in a broader range of system configuration.

4 illus, 9 ref

003326   Akana C M V S;Naga Raju O;Sirisha K P;Satya Prasad R;Balaji S (Computer Science & Ebgineering Dep, A.M.C. College, Bangalore) : Design of audio broad caster and listener using peer to peer network. Int J Comp Applic 2009, 4(1), 25-33.

Study how to assign a subset of the media data to each supplying peer and the fast amplification of the peer-to-peer streaming capacity. Intuitively, among multiple requesting peers, service priority should be given to those who promise higher out-bound bandwidth offers, because they will contribute more to the peer-to peer streaming capacity after becoming supplying peers. We have shown that how to realize such a differentiated admission policy and that fast capacity amplification will ultimately benefit all peers.

8 ref

002105   Savitha L;Ganesan M (CAS in Linguistics, Annamalai University, Annamalai Nagar-608 002,) : Information retrieval systems: functions and their applications. J Computnl Math optimiz 2009, 5(1), 57-77.

Information Retrieval (IR) is one of the current topics of research in the area of information storage and retrieval from Internet. A number of methods have been developed and are being used in the search engines for the retrieval of information. Even then retrieving information selectively on a specific topic is beyond the reach of common users. Searching will be perfect, once the system is made to understand the users need, which is normally through a query in a natural language. Analyzing the query and realizing the meaning fully through automatic process is not a simple task. It will be achieved in stages. This paper makes an attempt to explain the basic concepts on which the IR systems are working, different stages of analysis, required linguistic rules, methods of using the rules, various models currently available, application areas of IR, and Question Answering system.

16 ref

002104   Pekka K;Heilkki M;Kai K (NO, ACA Systems Oy, Sotkuma, Polvijarvi, Finland) : On-line porosity analyzer for optimiztion of paper and board production processes. IPPTA Jl 2009, 21(3), 149-50.

The on-line porosity analyzers have in recent years become a practical tool for papermakers to maximize paper quality and production profitability. The PERMI, being a fast and reliable on- line porosity analyzer from ACA Systems Oy, helps papermakers to rapidly adjust all grades to specification and carry out fast paper grade changes. The monitoring of several paper grades can accurately and reliably be measured with only one single calibration. The very fast machine direction measurement enables a new kind of control of paper and paperboard processes. Paper quality variations in the machine direction can be reduced with greater ease when a fast real paper quality measurement is available. It is easier to track the root causes of faster variations (recipes, dosing of chemicals, screen cleanings, variation in deaerator vacuum and air content etc.) Naturally, this leads to better paper uniformity, not only in porosity but also in most of the other important quality characteristics. The refining of chemical pulp as well as the postrefining of mechanical pulp can be optimized for each paper grade in spite of quality changes in the incoming pulp. The process automation system (DCS) can be equipped with a closed loop control circuit to maintain the required porosity level. The potential to save energy and increase production is remarkable and the uniformity of paper quality improves noticeably. The dosing of paper chemicals (fixatives, retention aids, and defoamers) can be monitored and optimized so that a good combination of retention, formation and drainage, as well as better runnability on the machine, can be achieved. Overdosing and the costs of the chemicals can be reduced without any risks to the process operation. The vacuum levels in the wire section (foils, vacuum rolls, vacuum boxes) can be quickly adjusted in the grade changes and therefore a good formation and dewatering with lower energy costs can be achieved.

4 illus, 2 ref

002103   Nagarjuna Kumar R;Meena S R;Awashthi O P; Samadia D K;Singh S;Jain M K;Khatri B R (NO, Central Institute for Arid Horticulture, Bikaner, Rajasthan) : Cyber extension in transfer of technology to farmers. Int J Trop Agric 2009, 27(1-2), 205-10.

At present days the conventional extension system has been facing several challenges in delivering information to farmers as farmers need is much more diversified and more knowledge driven to address them is beyond the level of grass root extension functionaries (Dhanka). It is possibk to deliver information timely by computer based technologies and Information communication Technologies (ICT), which are interlink among extension, research, marketing network and farm communities to provide information at the arid region, Central Institute for Arid Horticulture, Bikaner has been launched a Web-site during August 2006. This website includes facility to access the information from databases and to give feed back to the research institute. The website is mostly being utilized by farmers, followed by others to obtain information on the cultivation details, processing technologies, planting material details and the Institute programmes. This web site was found to be more useful to the farmers in the Arid region of India.

7 illus, 1 table, 8 ref

002947   Zheng Y;Xue J;Hu Q (NO, Institute of Software, Chinese Academy of Sciences, Beijing-100 080, Email: yujun.zheng@computer.org) : Knowledge-based support for object-oriented software design and synthesis: a category theoretic approach. J Digital Inf Mgmt 2007, 5(3), 116-22.

Proposes a knowledge-based approach that employs category theoretic models to formalize and mechanize objectoriented software design and synthesis by focusing concern on reasoning about the interdependency relationships at different levels of abstraction and granularity. The major benefit of our approach is twofold: First, it provides an explicit semantics for formal object-oriented specifications, and therefore enables a high-level of reusability and dynamic adaptability. Second, it utilizes the ability of categorical computations to support automated software composition and refinement. A prototype tool that demonstrates the feasibility and effectiveness of our approach is also presented.

10 illus, 30 ref

002946   Xu Z;Zheng X;Guo P (Image Processing and Pattern Recognition Laboratory, Beijing Normal Univ, Beijing-100 875, Email: pguo@ieee.org) : Empirically validating software metrics of risk prediction based on intelligent methods. J Digital Inf Mgmt 2007, 5(3), 99-106.

Software systems which are related to national science and technology projects are very crucial. This kind of systems always involves high technical factors and has to spend a large amount of money, so the quality and reliability of the software deserve to be further studied. -Hence, author propose to apply four intelligent classification techniques most used in data mining fields, including Bayesian belief networks (BBN), nearest neighbor (NN), rough set (RS) and decision tree (DT), to validate the usefulness of software metrics for risk prediction. Results show that comparing with metrics such as Lines of code (LOC) and Cydomatic complexity (V(G)) which are traditionally used for risk prediction, Ha/stead program difficulty (D), Number of executable statements (EXEC) and Halstead program volume (V) are the more effective metrics as risk predictors. By analyzing obtained results we also found that BBN was more effective than the other three methods in risk prediction.

12 tables, 15 ref

002945   Tamee K;Bull L;Pinngern O (Faculty of Computing, Engineering & Math. Sciences Univ West of England, , Email: kpouen@kmitl.ac.th) : YCSc : a modified clustering technique based on LCS. J Digital Inf Mgmt 2007, 5(3), 160-6.

Presents a novel approach to clustering using a simple accuracy-based Learning Classifier System with a modification to the original YCS fitness function has been found to improve the identification of less-separated data sets. The approach achieves this by exploiting the evolutionary computing and reinforcement learning techniques inherent to such systems. The purpose is to develop an approach to learning rules which accurately describe clusters without prior assumptions as to their number within a given dataset. Favourable comparisons to the commonly used k-means algorithm are demonstrated on a number of datasets.

7 illus, 2 tables, 23 ref

002944   Pang X L;Feng Y Q;Jiang W (School of Management, School of Computer Science and Technology, Harbin Institute of Technology, Harbin-150 001, Email: pangxiuli2003@163.com) : Linguistic decision analysis based technology project assessment. J Digital Inf Mgmt 2007, 5(3), 142-51.

Technology project assessment is influenced by a large number of factors, and many times it is hard to measure them in numbers or an objectively way. Addresses this by presenting a method for identifying and assessing key project characteristics, which are crucial for a technology project's assessment. Fistly, builds a new set of indicators of technology project assessment after analysing the process of it. Secondly, introduces two aggregation operators in the technology project to deal with two situations of technology project assessment respectively, including linguistic and subjective information and pair comparison of preference relation. The methods consist of a number of well-defined steps, which are described in detail. Finally, examples show that the proposed methods with the linguistic decision analysis are useful and provide an understanding way for the decision maker.

4 illus, 1 tabel, 28 ref

002943   Narang B S;Sushil Kumar;Shukla S P;Ramesh Kumar (NO, Bhilai Institute of Technology, Bhilai House, Durg-491 001) : Fault diagnosis of transmission lines using artificial neural network. Appl Sci Period 2006, 8(2), 105-9.

Deals with the detection of various faults occurring on three phase single circuit Electrical power transmission line. The proposed model uses a three-layered feed forward competitive neural network. The MA TLAB software (version 6. 1) has been used for training and testing the performance of the network. Different training algorithms have been compared in analyzing the fault detection. In order to get maximum accuracy the back propagation algorithm is used for training the neural network. The proposed model is capable of recognizing symmetrical as well as asymmetrical faults on the transmission lines with almost tolerable error as compared to the mechanical or electromechanical sensors. This model can be used for the analysis of complicated circuit.

4 tables, 6 ref

002942   Luo H;Chu S C;Pan J S;Lu Z M (NO, Harbin Institute of Technology, Harbin-150 001, Email: iuohao723@ghotmail.com) : Rotation-based three dimensional shape descriptor. J Digital Inf Mgmt 2007, 5(3), 138-41.

Recent developments in techniques for modeling, digitizing and visualizing three dimensional shapes have led to an explosion in the number of available three dimensional models on the Internet and in many domain-specific databases. However, how to describe three dimensional shapes is a difficult problem. A new three dimensional shape description method based on rotation is proposed. The first step is to sample points on the surface and compute. normal vectors. Secondly, we do Gauss mapping and rotate model, at the same time, rotate the Gauss sphere. The third step is to analysis normal distributions on the sphere surface. Then the Euclidean distance is computed, and finally a statistic histogram Us constructed. Experimental results show the effectiveness of this method.

5 illus, 11 ref

002941   Luckner M (NO, Faculty of Geodesy and Cartography Warsaw Univ Technology, pl. Politechniki 1, 00-661 Warsaw, Poland, Email: mluckner@gik.pw.edu.pl) : Recognition of noised patterns using non-disruptive learning set. J Digital Inf Mgmt 2007, 5(3), 152-9.

Recognition of strongly noised symbols on the basis of non-disruptive patterns is discussed taking music symbols as an example. Although Optical Music Recognition technology is not developed as successfully as OCR technology, several systems do recognize typical musical symbols at quite a good level. However, the recognition of non-typical fonts is still an unsolved issue. A model of a recognition system for unusual scores is presented. In the model described non-disruptive symbols are used to generate a learning set that makes possible improved recognition as is presented on a real example of rests and accidentals recognition. Some techniques are presented with various recognition rates and computing times including supervised and unsupervised ones.

9 illus, 5 tables, 16 ref

002940   Jiang B;Cheng Q;Ling G (Lab of Sonar Syetem Research, Hangzhou Applied Acoustics Research Institute, Hangzhou-310 012, Email: jbiao78@yahoo.com.cn) : Robust adaptive beamforming with SSMUSIC performance optimization in the presence of steering vector errors. J Digital Inf Mgmt 2007, 5(3), 107-15.

Novel subspace projection approach was proposed to improve the robustness of adaptive beamforming and direction finding algorithms. The cost function of the signal subspace scaled multiple signal classification (SSMUSIC) is minimized in the uncertainty set of the signal steering vector, the optimal solution to the optimization problem is that the assumed steering vector can be modified as the weighed sum of the vectors orthogonally projected onto the signal subspace and the noise subspace. Using the estimated steering vector with small error to the true steering vector, the spectral peaks in the actual signal directions are guaranteed. Consequently, the problem of signal self-canceling encountered by adaptive beamforming due to steering vector mismatches is eliminated. Simulation and lake trial results show that the proposed method not only possesses high resolution performance, but also is robust to a few steering vector errors. Furthermore, the modified MUSIC algorithm outperforms the conventional MUSIC and SSMUSIC methods excelIenfly.

15 illus, 15 ref

002939   Haw S C;Lee C S (NO, Faculty of Information Technology Multimedia Univ, 63100 Cyberjaya, Malaysia, Email: schawcslee@mmu.edu.my) : Stack-based pattern matching algorithm for XML query processing. J Digital Inf Mgmt 2007, 5(3), 167-75.

With the popularity of XML as data exchange over the Web, querying XML data has become an important issue to be addressed. Since the logical structure of XML is a tree, establishing a parent-child (P-C), ancestor-descendant (A-D) or sibling relationship between nodes is essential for structural query processing. Thus, proposes using a <60>self-level: parent> labeling scheme to encode each element in the XML database by its positional information. Based on this labeling scheme, we further propose our TwiglNLAB algorithm to optimize the query processing. Experimental results indicate that TwiglNLAB can process both path queries and twig queries better than the TwigStack algorithm on an average of 27% and 14% respectively in terms of execution time using the XMARK benchmark dataset.

5 illus, 27 ref

002938   Cao D;Yin Q;Guo P (Image Processing and Pattern Recognition Laboratory, School of Compute, Beijing Nomral Univ, Beijing-100 875, Email: pguo@ieee.org) : Multi-source remote sensing classification based on mallat fusion and residual error feature selection. J Digital Inf Mgmt 2007, 5(3), 130-7.

Classification of multi-source remote sensing images has been studied for decades, and many methods have been proposed or improved. Most of these studies focus on how to improve the classifiers in order to obtain higher classification accuracy. However, as we know, even if the most promising method such as neural network, its performance not only, depends on the classifier itself, but also has relation with the training pattern (i.e. features). On cons/deration of this aspect, proposes an approach to feature selection and classification of multi-source remote sensing images based on Mallat fusion and residual error in this paper. Firstly, the fusion of multi-source images can provide a fused image which is more preferable for classification. And then a feature-selection scheme approach based on fused image is proposed, which is to select effective subsets of features as inputs of a classifier by taking into account the residual error associated with each land-cover class. In addition, a classification technique base on selected features by using a feed-forward neural network is investigated. The results of computer experiments carried out on a multi-source data set confirm the validity of the proposed approach.

6 illus, 1 table, 22 ref

002937   Agrawal A;Joshi A;Radhakrishna M (NO, Indian Institute of Information Technology, Allahabad-211 011) : Move table: an intelligent software tool for optimal path finding and halt schedule generation. Def Sci J 2007, 57(5), 721-32.

Aims to help army officials in taking decisions before war to decide the optimal path for army troops moving between two points in a real world digital terrain, considering factors like traveled distance, terrain type, terrain slope, and road network. There can optionally be one or more enemies (obstacles) located on the terrain which should be avoided. A tile-based A * search strategy with diagonal distance and tie-breaker heuristics is proposed for finding the optimal path between source and destination nodes across a real-world 3-D terrain. A performance comparison (time analysis. search space analysis, and accuracy) has been made between the multiresolution A * search and the proposed tile-based A * search for large-scale digital terrain maps. Different heuristics, which are used by the algorithms to guide these to the goal node, are presented and compared to overcome some of the computational constraints associated with path finding on large digital terrains. Finally, a halt schedule is generated using the optimal path, weather condition, moving time, priority and type of a column, so that the senior military planners can strategically decide in advance the time and locations where the troops have to halt or overtake other troops depending on their priority and also the time of reaching the destination.

9 illus, 1 table, 9 ref

002936   Aggarwal R B;Dhawan A;Jay Shankar Kumar (NO, Institute of Systems Studies and Analyses, Delhi-110 054) : Database-centric development of menus and graphic user interfaces. Def Sci J 2007, 57(1), 133-8.

Database-centric approach to graphic user interface (GUI) development, quickly and easily manages standardisation and modification of labels and look and feel of controls by keeping various control-creation data into the database. The runtime generation of controls provides the flexibility to control their creation and modification issues. This method freezes the application code once the development is over. The process of recompilation is eliminated when creation or modification of controls is done. Dynamic controls such as menus, label, text box, button, combo box, list box, group box, check box, radio button, tab control, spin button, tree control can be easily formed and controlled using this approach.

^ssc5 illus, 3 tables, 2 ref

001964   Sandhu P S;Hardeep Shingh (NO, Guru Nanak Dev Engng Coll, Ludhiana-141 006, Email: Parvsandhu@yahoo.co.in) : Automatic domain-Relevancy appraisal of software components. Ultra Scient phys Sci 2006, 18(2), 169-76.

Domain-relevancy is an important factor in evaluating the reusability of a software component. For software Domain recognition systems; adequate ground truth labels that describe relevant software categories are necessary. This paper presents an approach that allows to automatically cluster feature-vector (FV) codes into meaningful categories. It exploits the fact that FV codes can be seen as documents containing terms -the idenifiers present in the components and so text modeling methods that capture co-occurrence information in low dimensional spaces can be used. The FV code derived descriptions are computed by Latent Semantic Analysis (LSA) using Singular Value Decomposition (SVD) and Semi-Discrete matrix Decomposition (SDD) techniques. The FV code repreªsentation of clusters is used to find the domain-relevancy of the software components automatically. The paper has mentioned, how statistical tools can be used to get a high-level description of software domain and compared the results of the two techniques. The results shows the superiority of SDD over SVD technique in terms of computation speed and storage.

5 illus, 24 ref

001963   Rakesh Kumar;Misra M;Sarje A K (Electronics & Computer Engineering Dep, Indian Institute of Technology, Roorkee-247 667, Email: rkmlcdec.manojfec.sarjefec@iitr.ernet.in) : Review of quality of service (QoS) route provisioning in mobile ad hoc networks. J Digital Inf Mgmt 2007, 5(1), 32-47.

With the increase of portable devices as well as rapid advancement in computing and wireless technologies, mobile ad hoc networking is gaining importance with the increasing number of widespread applications. Quality of service (QoS) routing plays a prominent role for providing QoS in mobile wireless ad hoc networks. Real time and multimedia applications need stringent QoS requirements. Providing a complete quality-of-service (QoS) solution for the ad hoc networking environment requires the interaction and co-operation of several components which include a QoS routing protocol, a resource reservation mechanism and a QoS capable medium access control (MAC) layer. The tasks of QoS routing are in general selecting routes with satisfied QoS requirement(s), and achieving global efficiency in terms of resource utilization. QoS is more difficult to guarantee in mobile ad hoc networks than in other type of networks due to the sharing of wireless bandwidth among adjacent nodes, its dynamic topology and generally imprecise network state information. This work is intended to provide a broad and comprehensive review of the QoS routing protocols proposed for ad hoc networks. Also describes important QoS frameworks for MANETs which attempt to provide required/promised services to each user or application.

12 illus, 1 table, 79 ref

001962   Muraleedharan P M;Sathe P V;Pankajakshan T (NO, National Instite of Oceanography, Dona Paula, Goa-403 004, Email: murali@darya.nio.org) : Software for validating parameters retrieved from satellite. J Indian Soc Remote Sens 2006, 34(2), 261-8.

A PC-based interactive software has been developed and presented for validating geophysical data retrieved from satellite mounted sensors operating in visible, infrared and microwave frequencies. The program, coded in Visual Basic, is user interactive and runs on Windows-98 or higher platforms. The system prepares the database on a pre-selected Microsoft platform to enhance processing efficiency. Sub-setting option is also provided to reduce the processing time. Data retrieved from 'Multi-channel Scanning Microwave Radiometer (MSMR) onboard the Indian satellites Oceansat-l during 1999-2001 were validated using this software as a case study. The program has several added advantages over the conventional method of validation that involves strenuous efforts to incorporate subroutines to meet every minute requirement. Satellite-sea truthrelationships on various space-time window combinations are determined and exhibited in matrix form to visualize the nature of correlation. User has the option to visualize the satellite-sea truth relationship through graphical representations before selecting optimum relationship for prediction.

8 illus, 7 ref

001961   Mishra B;Bhar C;Sen P (Mining Engng Dep, Indian School of Mines, , Dhanbad-826 004) : Development of a computer model for determination of cut off grade for metalliferous deposits. J Mines Metals Fuels 2006, 54(6-7), 147-52.

A dynamic programming model developed for determining the optimum cut off grade for a metalliferous deposit has been presented. A computer tool COGA (Cut off Grade Analysis) had also been developed for easy and accurate determination of cut off grade built on the framework of the dynamic programming model developed. The computer tool was built with the help of visual basic 6.0 programming language. This software basically consists of three modules - input module, graphical module, and result module.

7 illus, 7 ref

001960   Maytham Safar;Sami Habib (Computer Engineering Dep, Kuwait Univ, P. O. Box 5969, Safat 13060, Kuwait, Email: maytham.shabib@eng.kuniv.edu.kw) : Sensitivity analysis of server placement on enterprise network topology through soft computing. J Digital Inf Mgmt 2007, 5(1), 1-7.

Analyze the consequences when both the server placement problem and network topology problem are solved concurrently through soft computing. Both problems are formulated as a combined optimization problem, subject to a set of design and performance constraints while minimizing the enterprise network cost. , We have coded the combined optimization problem within a soft computing methodology, which is based on a probabilistic genetic program for automatically searching the design space for good network topologies. The experimental results for synthesizing and optimizing 3-level enterprise network (65 user nodes) for an edge-server placement has demonstrated the effectiveness of our methodology in finding good solutions with a static workload in less than five minutes.

6 illus, 6 tables, 24 ref

001959   Lathasree P;Senthilkumar T;Madhuranath P (NAL, , Bangalore-560 017) : Modelling, simulation, and analysis of HAL Bangalore international airport. Def Sci J 2007, 57(6), 865-76.

Air traffic density in India and the world at large is growing fast and posing challenging problems. The problems encountered can be parameterized as flight delay, workload of air traffic controllers and noise levels in and around aerodromes. Prediction and quantification of these parameters aid in developing strategies for efficient air traffic management. In this study, the method used for quantifying is by simulation and analysis of the selected aerodrome and air space. This paper presents the results of simulation of HAL Bangalore International Airport, which is used by civil as well as military aircraft. With the test flying of unscheduled military aircraft and the increase in the civil air traffic, this airport is hitting the limit of acceptable delay. The workload on air traffic controllers is pushed to high during peak times. The noise contour prediction, especially for the test flying military aircraft is sounding a wake up call to the communities living in the vicinity of the Airport.

15 illus, 4 tables, 12 ref

001958   Krikor Lala Z.;Baba Sami E I;Krikor Maro Z. (Computer Science Dep, Applied Science Univ, Faculty CSIT, Amman, Jordan, Email: marozareh@yahoo.com) : Palette-based image segmentation using HSL space. J Digital Inf Mgmt 2007, 5(1), 8-11.

Describes a palette-based colored image segmentation system. Analyzed the properties of Hue, Saturation, and Luminance (HSL) color space with emphasis on the visual perception of the variation in Hue, Saturation and Luminance values of palette colors. The proposed algorithm based on the concept of re-coloring the palette colors of 256-co/or images using the properties of HSL color space and segmenting true type images by taking part of the image, generating a palette to it then apply the method to segment the selected region. After re-coloring of the palette colors the colors in the image will be re-colored according to its new palette, and as a result the image will be segmented to different segments.

4 illus, 11 ref

001957   Jayashree I S;Arumugam S;Vijayalakshmi K (Computer Science and Engineering Dep, Kumaraguru College of Technology, Coimbatore-641 006, Email: jayashreeofkct@yahoo.co.in) : A robust outlier detection scheme for collaborative sensor networks. J Digital Inf Mgmt 2007, 5(1), 12-17.

In-networks, Data Aggregation is usually warranted for distributed wireless sensor networks, owing to reliability and energy efficiency reasons. Sensor nodes are usually deployed in unattended and unsafe environments and hence are vulnerable to intentional or unintentional damages. Individual nodes are prone to different type of faults such as hardware faults, crash faults etc and other security vulnerabilities wherein one or more nodes are compromised to produce bogus data so as to confuse the rest of the network in collaborative sensing applications. The availability of constrained resources and the presence of faulty nodes make designing fault tolerant information aggregation mechanisms in large sensor networks particularly challenging. Authors consider Byzantine type of faults, which encompasses most of the common sensor node faults [9]. Faulty nodes are assumed to send inconsistent and arbitrary values to other nodes during information exchange process. These values are termed as outliers and we use a statistical test called Modified Z-score method to reliably detect and remove outliers. We show by simulation that the proposed strategy works well for 2 major classes of collaborative sensor network applications viz. (i) Target/ Event detec-tion and (ii) Continuous data gathering.

13 illus, 2 tables, 20 ref

001956   Halonen R (Information Processing Science Dep, FI-90014 University of Oulu Finland, P.O. Box 3000, Email: raija.halonen@oulu.fi) : Digitized information management: the dynamic information system. J Digital Inf Mgmt 2007, 5(1), 25-31.

Research focuses on the change process that led to a digitized information system in academia. The development was carried out in a project where the participants represented their universities. The biggest issue to manage was to define the electronic process that was to be coded to support student mobility between universities. Action research was chosen as the research method because of the strong involvement of the researcher in the case. The output was evaluated satisfied, even excellent by the users and the goal was achieved despite minor knowledge about designing information systems in the project group.

3 illus, 47 ref

001955   Divecha B;Abraham A;Grosan C;Sanya S (NO, Mumbai Univ, Mumbai India, Email: bhavyesh@gmail.com) : Impact of node mobility on MANET routing protocols models. J Digital Inf Mgmt 2007, 5(1), 19-24.

A Mobile Ad-Hoc Network (MANET) is a self-configuring network of mobile nodes connected by wireless links to form an arbitrary topology without the use of existing infrastructure. Studied the effects of various mobility models on the performance of two routing protocols Dynamic Source Routing (DSR-Reactive Protocol) and Destination-Sequenced Distance-Vector (DSDV-Proactive Protocol). For experiment purposes, authors have considered four mobility scenarios: Random Waypoint, Group Mobility, Freeway and Manhattan models. These four Mobility Models are selected to represent possibility of practical application in future. Performance comparison has also been conducted across varying node densities and number of hops. Experiment results illustrate that performance of the routing protocol varies across different mobility models, node densities and length of data paths.

10 illus, 1 table, 14 ref

001954   Bisht S;Malhotra A;Taneja S B (NO, Institute for Systems Studies and Analyses, Delhi-110 054) : Modelling and simulation of tactical team behaviour. Def Sci J 2007, 57(6), 853-64.

Realistic military simulations are needed for analysis, planning, and training. Intelligent agent technology is a valuable software concept with the potential of being widely used in military simulation applications. They provide a powerful abstraction mechanism required for designing simulations of complex and dynamic battlefields. Their ability to model the tactical decision-making behaviour of simulated battlefield entities gives them an edge over other techniques. During battlefield simulation, these entities generally represent individualistic behaviour, taking operational order from higher control and executing relevant plans. However, since a complex battlefield scenario typically involves thousands of entities, their coordinated team behaviour should also be considered to make the simulation more realistic. This paper demonstrates the use of intelligent agent-based team behaviour modelling concepts in simulating the armoured tanks in a tactical masking scenario.

4 illus, 19 ref

000006   Pathak M A;Thakre V S (Computer Science & Engineering Dep, Visvesvaraya national Institute of Technology, Nagpur-440 010, Email: manas07@gmail.com) : Intelligent web monitoring-a hypertext mining-based approach. J Indian Inst Sci 2006, 86(5), 481-92.

World Wide Web has become one of the principal sources of information since its inception. With large amount of content added and deleted, the amount of change in hypertextual data is massive. This rapidly changing nature of the WWW makes the task of tracking information intractable when done manually. Proposes an approach for intelligently monitoring the website for changes, taking into consideration the user interests and ranking of these changes according to relevance. A prototype system WebMon based on this approach is presented. WebMon consists of basic components performing infrastructural activities such as crawlers and indexers. Also it takes as input keyword weights based on the user interests. It then represents the hypertextual data in the website in the form of a vector space model (VSM). Periodically this process is carried out to get the VSM representing the hypertextual data of the website at that instance of time. To monitor for changes, the data in VSMs at different instances of time is compared and the corresponding changes are ranked according to their relevance according to the user. A modified nearest neighbor algorithm (NN) is implemented for the same. To further improve the accuracy and self-adjustability of the relevance rankings, the system employs a modified supervised learning algorithm thereby taking into account the behavior of the user intelligently. The WebMon system has been tested extensively on many websites giving results as expected. Reports some experimental results showing the effectiveness of the proposed approach.

1 illus, 2 tables, 18 ref