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Nomenclatura Unesco > (11) Lógica

Mostrando recursos 281 - 300 de 164,650

281. A Fuzzy Logic Approach for Stereo Matching Suited for Real-Time Processing - M. Perez-patricio; Tuxtla Gtz Mexico; Tuxtla Gtz Mexico; Tuxtla Gtz Mexico; M. Arias-estrada; Luis Enrique Erro; Santa Mara Tonatzintla
In this paper, a novel method that uses both area and feature based information as similarity measures for stereo matching is proposed. Area-based information is suited for non-homogeneous regions while feature information helps in homogeneous areas. In order to define a conjugate pair, a fuzzy logic approach that combines the similarity information is used. The proposed method preserves discontinuities while reducing matching errors in homogeneous re-gions. This proposal is suited for real-time processing using ded-icated hardware. We demonstrate and discuss performance using synthetic stereo pairs. Keywords: fuzzy logic; dense stereo vision; real-time processing; dedicated hardware; feature-based 1.

282. Combining Collaborative Workspaces with Tablet Computing - Eric Hamilton; Andrew Hurford
Abstract- This paper reports on efforts to blend tablet computers with collaborative workspace technologies. An underlying conjecture is that this blend, evaluated with support from Microsoft Research and the National Science Foundation, may help increase learner engagement substantially. The pedagogical logic is that if an instructor can effect a high volume of precise feedback experiences, engagement levels and learning will climb. The intervention needs to afford the teacher a vivid lens on learner processing, and to furnish learners with means to construct representations naturally but electronically. It would also need to furnish means to mediate the rapid flow of those...

283. Fuzzy Color Space for Apparel Coordination - Pakizar Shamoi A; Atsushi Inoue B; Hiroharu Kawanaka C; B Department Of Computer Science
Human perception of colors constitutes an important part in color theory. The applications of color science are truly omnipresent, and what impression colors make on human plays a vital role in them. In this paper, we offer the novel approach for color information representation and processing using fuzzy sets and logic theory, which is extremely useful in modeling human impressions. Specifically, we use fuzzy mathematics to partition the gamut of feasible colors in HSI color space based on standard linguistic tags. The proposed method can be useful in various image processing applications involving query processing. We demonstrate its effectivity in...

284. Thyristor Controlled Reactor with Different Topologies Based on Fuzzy Logic Controller - Fathy H. Awad; Ahmed A. Mansour; Essam E. Abou Elzahab
Abstract: This paper studies improving the power factor by using Thyristor Controlled Reactor (TCR) shunted with a fixed capacitor to get a controlled source of reactive power. This technique has three topologies of TCR connection like Star, Delta, and Hybrid. The fuzzy controller is used to control the thyristor firing angle according to the reactive power measured at the PCC to improve the power factor. Also, the paper discusses the using of the hybrid technique to solve the problem of Total Harmonic Distortion (THD) as one side effect of the using the TCR system.

285. Electronics and Communication - Jaikaran Singh; Sssist Sehore (m. P; Mukesh Tiwari; Sssist Sehore (m. P; Zuber Khan; Sssist Sehore (m. P
We can use a high-speed parallel adder in incrementer / decrementer to improve the operating speed which can count up or count down from the loaded value by one step in one clock cycle. For this, design of a faster and highly reliable adder is of major importance. Thus, much effort has been invested in the research that has led to faster and more efficient ways to perform this operation. To prove the efficiency of the proposed method, the circuit is simulated in pass transistor CMOS 50nm technology and some simulation parameters are calcultes in the layout of the circuit....

286. Y. Siva Kumar - B. Sai Abhinav; M. Jaipal Reddy; Pg (vlsi Design; S. Sivanantham
Reversible logic is one of the promising research areas in low power applications such as quantum computing, optical information processing and low power CMOS design. In this paper we present a reversible carry look ahead adder and an array multiplier. The circuits are designed such that they result in less garbage outputs, constant inputs, and less gate count compared to previous existing designs. We also gain better improvements in terms of power and area when compared to conventional adders and multipliers. The implemented designs are simulated using NC launch and synthesized by RTL compiler.

287. Fuzzy Logic based Assessment Model Proposal for Online Problem-based Learning - Abdulkadir Karacı
In this research, problem based learning over web is suggested. This model includes fuzzy logic and MYCIN trust factor. Through the model, MYCIN trust factor and the number of attempts to solve the problem are used in order to identify students ' learning levels. MYCIN confidence factor value and number of attempts to solve the problem are to be entered to fuzzy logic decision system. The output of the fuzzy logic decision system becomes the new level of learning. This level of learning is calculated through fuzzy logic in linguistic term as well as numeric expression. In every try, a...

288. Side-Channel Leakage of Masked CMOS Gates - Stefan Mangard; Berndt M. Gammel; Infineon Technolgies Ag
Abstract. There are many articles and patents on the masking of logic gates. However, the existing publications assume that a masked logic gate switches its output no more than once per clock cycle. Unfortunately, this assumption usually does not hold true in practice. In this article, we show that glitches occurring in circuits of masked gates make these circuits susceptible to classical first-order DPA attacks. Be-sides a thorough theoretical analysis of the DPA-resistance of masked gates in the presence of glitches, we also provide simulation results that confirm the theoretical elaborations. Glitches occur in every CMOS cir-cuit. Consequently, the currently...

289. Binary lambda calculus and combinatory logic - John Tromp
In the first part, we introduce binary representations of both lambda calculus and combinatory logic terms, and demonstrate their simplicity by providing very compact parser-interpreters for these binary languages. Along the way we also present new results on list representations, bracket abstraction, and fixpoint combinators. In the second part we review Al-gorithmic Information Theory, for which these interpreters provide a con-venient vehicle. We demonstrate this with several concrete upper bounds on program-size complexity. 1

290. Trust based Energy Efficient Clustering using Genetic Algorithm in Wireless Sensor Networks (TEECGA) - Nivedita B. Nimbalkar; Engg Kjcoemr Pune; Soumitra S. Das
Wireless sensor networks are gaining lot of popularity because of its widespread applications. They consist of small sensor nodes that are low in battery and computational capability. Mostly these nodes are deployed in remote areas thus it’s not easy to replace their batteries. In clustering process, clusters of the sensor nodes are formed. All the sensor nodes send the sensed data to their cluster heads and cluster heads forward the data to sink. Various techniques like fuzzy logic, neural networks, artificial intelligence and genetic algorithm etc can be used for clustering and cluster head selection in wireless sensor networks. Proposed...

291. Optimization of Terminal Aerodrome Forecast - Aditi Sharma; Dr. Mamta Bansal
Abstract — Weather forecasting is a critical application in meteorology and has been a standout amongst the most scientifically and technologically difficult issues extreme and broad. Climate determining is an capricious procedure that includes various particular fields of mastery. A fuzzy logic based methodology can be implemented with the Case based Reasoning (CBR) system. CBR and fuzzy set theory both have their own capabilities so that we combine both of them then we can get a strong solution to solve a problem. Case Based Reasoning is method of solving a new problem with the help of old solutions. According to...

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Abstract--- Machine tool vibration plays a dominant role in the surface finish, dimensional and geometrical tolerances of the machined work piece. Condition of the machines includes collected data, such as vibration analysis, oil and wears debris analysis, ultrasound, temperature and performance evaluation. Out of these the vibrations have been measured and its effect has been studied. The present paper deals with the measurement of acceleration during machining of Cast Iron on lathe machine. 33full factorial design of experiments were selected, experiments are performed by varying machining parameters such as spindle speed, feed rate and depth of cut. ANOVA and Regression...

293. Investigation of Voltage Sag and Swell Problems using DVR and Fuzzy Logic - Abhijith Augustine; Ruban Deva Prakash; Rajy Xavier
The term power quality becomes one of the touching concepts in present day economy. Due to its increased concern in the emerging industries, the importance of delivering true power is of a key issue. The concept of true power mainly depends on how correctly the issues like voltage sag and voltage swell are mitigated. Among all the power quality problems, the above mentioned are of key importance. This is because of the extensive use of newly invented as well as the outdated sensitive equipments connected to the load. Sensitivity is the main cause of the above power quality problems and...

294. Fuzzy based Load and Energy Aware Multipath Routing for Mobile Ad Hoc Networks - M. Ali; B. G. Stewart; A. Shahrabi; A. Vallavaraj
Routing is a challenging task in Mobile Ad hoc Networks (MANET) due to their dynamic topology and lack of central administration. As a consequence of un-predictable topology changes of such networks, routing protocols employed need to accurately capture the delay, load, available bandwidth and residual node energy at various locations of the network for effective energy and load balancing. This paper presents a fuzzy logic based scheme that ensures delay, load and energy aware routing to avoid congestion and minimise end-to-end delay in MANETs. In the proposed approach, forwarding delay, average load, available bandwidth and residual battery energy at a...

295. A Fuzzy Logic System for Admissibility of Prospective Student to Nursery Class - Goldendeep Kaur; Prabhjot Singh
Education plays a vital role in our lives. In today’s constantly changing technological world, education is necessity after food, clothing and shelter. Competition prevails in every sphere of life. Even at primary level there is massive rush for admissions. Every school has its own criteria for selecting prospective students. This research is an attempt to design and implement a fuzzy logic system to identify the eligibility of the concerned students. In the system designed, four input parameters which are Neighborhood points, Educational Qualification of Parents, Siblings points and Alumni points are evaluated using Fuzzy system to infer an output parameter...

296. Solving the University-Course Admission Choice Problem - V. O. Oladokun; D. I. Oyewole
The university admission choice problem is that of selecting a combination of a course of study and a university, either as first or second choice, given a candidate’s academic ability and interest with the goal of maximizing the candidate’s chance of securing university admission in a competitive process. This study was aimed at developing a decision support system for university admission seekers, who are faced with the admission choice problem, using the concept of fuzzy logic. Through literature search, interviews, and expert knowledge mining, relevant factors characterizing the Nigerian University admission system were determined and the dynamics of their interactions...

297. 1 A Novel VLSI Architecture for Reversible ALU Logic Gate Structure - Suman Yadav; Manish Saxena
Programmable reversible logic is emerging as a prospective logic design style for implementation in modern nanotechnology and quantum computing with minimal impact on circuit heat generation. Recent advances in reversible logic using and quantum computer algorithms allow for improved computer architecture and arithmetic logic unit designs. In this paper, the design reversible ALU based on different types of reversible gate used with minimal delay, and may be configured to produce a variety of logical calculations. The proposed reversible ALU based on DKG gates is verified and its advantages over the only existing adder design are quantitatively analyzed. The proposed design...

298. A Fuzzy Approach to Hand written Devnagari Script up to five Characters Recognition - Pankaj Sharma; S. K. Gupta
This paper elaborates Hindi curve character recognition based on fuzzy logic. Characters are classified by if then rules based on Fuzzy logic into seven classes according to vertical bar. The experiment is performed for 10 different datasets of handwritten three-character, four-character and five-character words from 100 peoples. This group of people has different aged members. The experiment was successfully performed and the average recognition rate is found to be 94.8%.

299. Packet Forwarding Misbehaviour Isolation using Fuzzy Trust-based Secure Routing in MANET - Jenish R. Gandhi; Rutvij H. Jhaveri
MANETs are much more susceptible to various attacks because of openness in network topology and being away of a centralized administration in management. As an outcome of that, more malicious nodes are often comes in and goes out without being detected from the network topology. Hence, MANET needs very specialized security methods to isolate the false entrance. As well as there is no single solution that fitting in different types of the network where the nodes can be behave like any apparatuses. The networks works well if the nodes are trusty and act rightly cooperatively. In order to improve the...

300. 1 Painted musical representation and mnemonics - Juliet Kac; Rod Paton
Background in art history and theory. Specific interest – the relationship between painting and music. Della Francesca (c1415-1487) used musical ratios as a compositional device in his paintings (Bouleau, 1963). Colour in Poussin’s (1594?-1665) paintings convey moods analogous to the modes representing the keys in early music, and Delacroix’s (1798-1863) use of colour is associated with mood and a ‘musical quality ’ (Lockspeiser, 1973). An exhibition of paintings in Madrid (2003) at the Museo Thyssen-Bornemisza gallery titled ‘Musical Analogies, Kandinsky and his Contemporaries’, testifies both to the diversity of interpretations of artists working within the parameters of this subject within...


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