27 research outputs found
Secure Digital Information Forward Using Highly Developed AES Techniques in Cloud Computing
Nowadays, in communications, the main criteria are ensuring the digital information and communication in the network. The normal two users' communication exchanges confidential data and files via the web. Secure data communication is the most crucial problem for message transmission networks. To resolve this problem, cryptography uses mathematical encryption and decryption data on adaptation by converting data from a key into an unreadable format. Cryptography provides a method for performing the transmission of confidential or secure communication. The proposed AES (Advanced Encryption Standard)-based Padding Key Encryption (PKE) algorithm encrypts the Data; it generates the secret key in an unreadable format. The receiver decrypts the data using the private key in a readable format. In the proposed PKE algorithm, the sender sends data into plain Text to cypher-text using a secret key to the authorized person; the unauthorized person cannot access the data through the Internet; only an authorized person can view the data through the private key. A method for identifying user groups was developed. Support vector machines (SVM) were used in user behaviour analysis to estimate probability densities so that each user could be predicted to launch applications and sessions independently. The results of the proposed simulation offer a high level of security for transmitting sensitive data or files to recipients compared to other previous methods and user behaviour analysis
Roadmap on holography
From its inception holography has proven an extremely productive and attractive area of research. While specific technical applications give rise to 'hot topics', and three-dimensional (3D) visualisation comes in and out of fashion, the core principals involved continue to lead to exciting innovations in a wide range of areas. We humbly submit that it is impossible, in any journal document of this type, to fully reflect current and potential activity; however, our valiant contributors have produced a series of documents that go no small way to neatly capture progress across a wide range of core activities. As editors we have attempted to spread our net wide in order to illustrate the breadth of international activity. In relation to this we believe we have been at least partially successful.This work was supported by Ministerio de EconomĂa, Industria y Competitividad (Spain) under projects FIS2017-82919-R (MINECO/AEI/FEDER, UE) and FIS2015-66570-P (MINECO/FEDER), and by Generalitat Valenciana (Spain) under project PROMETEO II/2015/015
SELECTION OF THE BEST SCHOOL FOR THE CHILDREN- A DECISION MAKING MODEL USING EXTENT ANALYSIS METHOD ON FUZZY ANALYTIC HIERARCHY PROCESS
Abstract: Parents have a growing array of options in choosing a school, though the extent of the options varies from place to place. In this paper, the Extent Analysis Method on Fuzzy Analytic Hierarchy Process (abbreviated as Fuzzy AHP) is used to develop a decision making model for choosing the best school for the children
UV Spectrophotometric Estimation of Acipimox inBulk and Capsule Dosage Form
A new simple, rapid, accurate, sensitive and precise spectrophotometric method in ultra violet region has been developed for determination of acipimox (ACX) in bulk and capsule dosage form. Acipimox exhibited maximum absorbance at 231 nm with apparent molar absorptivity of 1.5104 × 104 in distilled water. Beer’s law was found to be obeyed in the concentration range 1-10 μg mL-1. Correlation coefficient was found to be 0.9998. The developed method was validated respect to linearity, precision, accuracy. The proposed method is useful for the routine estimation of ACX in bulk and capsule dosage form
Kalaichelvi R, UV Spectrophotometric Method for Determination of Cinitapride in Pure and its Solid Dosage. E-Journal of Chemistry
ABSTRACT A simple, sensitive and reproducible spectrophotometric method was developed for the determination of clebopride in pure form and in pharmaceutical formulation. It has an absorption maximum at 263 nm and obeys beer's law in the concentration range 20 -100 µg mL -1 . Results of analysis were validated statistically and by recovery studies. The apparent molar absorptivity and sandell's sensitivity were 3.944x10 3 L mol -1 cm -1 and 1.06x10 -5 µg cm -2 , respectively. The slope and intercept of the equation of the regression line are 0.0106 and 0.0045 respectively. Correlation coefficient was found to be 0.9999. This method is successfully employed for the determination of clebopride in pharmaceutical preparation
UV Spectrophotometric Method for Determination of Cinitapride in Pure and its Solid Dosage Form
A new, rapid, precise, accurate and sensitive analytical method was developed for the UV spectrophotometric assay of cinitapride (CTP). The drug obeyed the Beer's law and showed good correlation. It showed absorption maxima at 260 nm in methanol. The linearity was observed between 5-40 µg mL-1. The results of analysis were validated by recovery studies. The recovery was more than 99%. The proposed method is the only method available for spectrophotometric determination of the drug. It is simple, precise, sensitive and reproducible and can be used for the routine quality control testing of the marketed formulations
Spontaneous Emergence of Nonlinear Light Waves and Self-Inscribed Waveguide Microstructure during the Cationic Polymerization of Epoxides
We report spontaneous pattern formation
due to modulation instability
(MI) of a broad, uniform, incandescent beam as it propagates through
a fluid medium undergoing cationic ring-opening polymerization of
epoxide moieties and show that the dynamics of the process can be
controlled through polymerization kinetics. By strong contrast, MI
in the half century-old field of nonlinear light propagation has until
now been described predominantly in terms of optical parameters such
as coherence, intensity and wavelength. The increase in refractive
index (Δ<i>n</i>) originating from the cross-linking
polymerization of biscycloaliphatic epoxy monomers pushes the system
into a nonlinear regime, where normally negligible spatial noise becomes
greatly amplified. The perturbed optical field stabilizes by spontaneously
dividing into thousands of self-trapped filaments of light. Because
each filament inscribes a permanent microscopic channel along its
propagation path, the initially isotropic fluid medium solidifies
into a densely packed array of self-induced waveguides. These experiments
demonstrated the strong correlation between the kinetics of cationic
polymerization and dynamics of MI; the beam becomes unstable only
within a narrow parameter range where a critical balance is struck
between the photoresponse speed (determined by polymerization rate)
and the magnitude of Δ<i>n</i> (determined by extent
of cross-linking). The former needs to be sufficiently fast to respond
to noise while the latter must be large enough to generate high-refractive
index seeds that trigger MI. Outside of this range, MI is entirely
suppressed. This study reveals that nonlinear waveforms emerge in
a familiar, widely employed epoxide photopolymer system, which for
the first time highlights the possibility of tuning MI through the
kinetics of a photochemical reaction