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Random Testing: The Best Coverage Technique - An Empirical Proof
K Koteswara Rao,Prof GSVP Raju 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.12
Soft testing is one way of assuring quality of the software. There are many testing techniques to test the software, however random testing is one among the best alternatives, which will generate the test inputs based on some dissemination. It is evaluated theoretically and concluded that the performance of random testing is very impressive when it is compared with partition testing even though it gives good results for testing. Here in this paper we addressed the difference in coverage between random testing and partition testing, here we have taken one example program and written the test cases for that. To test the program we have used automated tools JUnit for partition testing and Randoop for random testing. Once it is over using EclEmma the coverage of test cases is evaluated and proved RT is best.
Acquiring Business Intelligence through Temporal Mining of Smart Meter Data
Siva Koteswara Rao Chinnam,AV Krishna Prasad,B.Premamayudu,Moka Vinod,Hye-Jin Kim 보안공학연구지원센터 2016 International Journal of Software Engineering and Vol.10 No.9
More and more enterprises are switching over to Machine learning applications to improve their analyzing and predicting capabilities of their business. In this paper we propose a new outlook towards utility computing where public services can be view as a business. A public service can be better delivered by viewing it as a business model rather than a service model. The demand supply can be better analyzed and predicted by our model. This paper is about using efficient mining techniques on real time smart meter data for any utility like water, power or gas etc. The parameters that smart meters provide from time to time over a network can give us real time readings of the consumption which in itself adds enough intelligence to the service. Now by applying temporal mining techniques on this smart meter data we attempt to show how the Business intelligence can be improved by data analysis and analytics. Though there is an opposition from some point of views that smart meters are hazardous to health due to its RF technology we can only improve utility computing by smarter data so that the service in efficient and effective.
Theoretical Investigations to Random Testing Variants and its Implications
K. Koteswara Rao,Prof GSVP Raju 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.5
In real world Testing is the most challenging job in software development. In these days of the information technology epoch, the software has become the lifeline of every human activity. It may not be hyperbole, if someone states that our lives will come to stand-still if every software machine in the universe stops working! When software plays such a crucial role in our lives, it is very important that the software we use should be very high quality and reliability. Even the small gremlin is there in any software that causes huge disaster. These are the examples PATRIOT MISSILE- the patriot missile example shows how a small software bug accumulation of error due to rounding off a number can lead to catastrophe. And ARIANE-5- European Space Agency launched the ariane5 satellite launch vehicle. Exactly 40 seconds after lift-off at an attitude of 3700meters, the launcher devastated and became a ball of fire. This type of mint errors can’t be covered in normal testing’s like Unit Testing, Integration Testing, etc. For that reason RANDOM TESTING is introduced. Random testing is a dominant or a commanding tool in finding low-frequency bugs that are nearly impossible to find using other methods. A Low-frequency bug sometimes leads to system to crash, hence these have to be identified and removed. By using a test, Oracle one may also detect non-crashing errors in the system. Here the objective of work is to study the advantage and various implications of Random Testing, later we will develop one assumed application “Trading system”, to that we will apply random testing to accentuate theoretical and practical implications including variants of Random Testing.
Leakage current transport mechanism under reverse bias in Au/Ni/GaN Schottky barrier diode
Peta, Koteswara Rao,Kim, Moon Deock Elsevier 2018 Superlattices and microstructures Vol.113 No.-
<P><B>Abstract</B></P> <P>The leakage current transport mechanism under reverse bias of Au/Ni/GaN Schottky diode is studied using temperature dependent current-voltage (I-V-T) and capacitance-voltage (C-V) characteristics. I-V measurement in this study is in the range of 140 K–420 K in steps of 10 K. A reduction in voltage dependent barrier height and a strong internal electric field in depletion region under reverse bias suggested electric field enhanced thermionic emission in carrier transport via defect states in Au/Ni/GaN SBD. A detailed analysis of reverse leakage current revealed two different predominant transport mechanisms namely variable-range hopping (VRH) and Poole-Frenkel (PF) emission conduction at low (<260 K) and high (>260 K) temperatures respectively. The estimated thermal activation energies (0.20–0.39 eV) from Arrhenius plot indicates a trap assisted tunneling of thermally activated electrons from a deep trap state into a continuum of states associated with each conductive threading dislocation.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Leakage current transport mechanism under reverse bias in Au/Ni/GaN SBDs is reported. </LI> <LI> Variable-Range Hopping and Poole-Frenkel emission are the two mechanisms are identified in reverse leakage current. </LI> <LI> The estimated thermal activation energy of an electron is in the range 0.20 eV–0.39 eV from Arrhenius analysis. </LI> </UL> </P>
UWB Band-Notched Monopole Antenna with Defected Ground Structure
V.N.Koteswara rao,N. Vyuha,P. Naga sai,K. Sahitya,K. Divya,K. Maheswarareddy,Devana 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.4
A compact planar monopole antenna with standard band-notched characteristic suitable for ultra wideband (UWB) applications is presented. This microstrip-fed antenna, consisting of an inverted U-shaped slot on the radiating patch with defected ground structure. The designed antenna has a small size of 12×18×1.6 mm3 and operates over the frequency band between 3.7 and 10.4 GHz for VSWR < 2, while showing the band rejection performance in the frequency band of 5.1 to 5.9 GHz (WLAN) and is suitable for applications of communication systems, wireless communications, various kinds of antenna test ranges, and high resolution microwave imaging systems. The proposed UWB antenna is simulated by using the CST Microwave studio.
Synthesis and Cytotoxicity Evaluation of Phosphorylated Derivatives of Ribavirin
Rao, Valasani Koteswara,Reddy, Sanapalli Subba,Babu, Kilaru Raveendra,Kumar, Kuntrapakam Hema,Ghosh, Sunil Kumar,Raju, Chamarthi Naga Korean Chemical Society 2011 대한화학회지 Vol.55 No.6
Novel phosphorylated derivatives of ribavirin 5-16 were synthesized by the reaction of 4-nitrophenyl phosphorodichloridate with various amino acid esters in the presence of triethylamine in dry tetrahydrofuran through the intermediates 3. On further reaction of 3 with ribavirin in THF and pyridine in the presence of TEA afforded the title compounds 5-16. Their structures were characterized by IR, $^1H$, $^{13}C$, $^{31}P$ NMR and mass spectral analyses. All the title compounds were found to exhibit potent in vitro anticancer activity against MCF-7 breast cancer cell lines.
Complex formation between starch and stearic acid: Effect of enzymatic debranching for starch
Reddy, Chagam Koteswara,Choi, So Mang,Lee, Dong-Jin,Lim, Seung-Taik Elsevier 2018 Food chemistry Vol.244 No.-
<P><B>Abstract</B></P> <P>Effect of debranching for a high-amylose starch (∼70% amylose) on its V-complex formation with stearic acid was examined. Gel-permeation chromatograms showed that amylopectin was degraded to smaller molecules as the debranching time increased from 6 to 24 h. Increased formation of debranched starch/stearic acid complexes (recovery yield of stearic acid from 45.17 to 89.31% and starch from 39.92 to 55.43%) was observed with increased debranching time (from 6 to 24 h) and complexation time (from 6 to 24 h). The X-ray diffraction patterns of the debranched starch/stearic acid complexes displayed a mixture of B-type and V-type patterns, with <I>2θ</I> peaks at 7.6°, 13.1°, 17.2°, 20°, 21.6°, and 23.4°. The melting temperature and enthalpy changes of the debranched starch/stearic acid complexes were gradually enhanced with increasing debranching time. These results suggest that starch can be modified by debranching to produce a significant amount of debranched starch/stearic acid complexes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Debranching enhanced the formation of starch/stearic acid complexes. </LI> <LI> There was an optimum starch chain length for starch/stearic acid complexes. </LI> <LI> The complex involving helices among amylopectin residue or amylose and stearic acid. </LI> <LI> Complex yield of stearic acid could reach 89.31% by debranching process. </LI> </UL> </P>