BLUR-INVARIANT COPY-MOVE FORGERY DETECTION TECHNIQUE WITH IMPROVED DETECTION ACCURACY UTILIZING SWT-SVD

With the increase in interchange of data, there is a growing necessity of security. Considering the volumes of digital data that is transmitted, they are in need to be secure. Among the many forms of tampering possible, one widespread technique is Copy Move Forgery (CMF). This forgery occurs when parts of the image are copied and duplicated elsewhere in the same image. There exist a number of algorithms to detect such a forgery in which the primary step involved is feature extraction. The feature extraction techniques employed must have lesser time and space complexity involved for an efficient and faster processing of media. Also, majority of the existing state of art techniques often tend to falsely match similar genuine objects as copy move forged during the detection process. To tackle these problems, the paper proposes a novel algorithm that recognizes a unique approach of using Hu’s Invariant Moments and Log-polar Transformations to reduce feature vector dimension to one feature per block simultaneously detecting CMF among genuine similar objects in an image. The qualitative and quantitative results obtained demonstrate the effectiveness of this algorithm

Bio-waste derived adsorbent materials for waste water treatment

Corn cobs were used as a source to prepare activated carbon by physical and chemical activation methods. The physical activation was employed with CO2 and steam at high temperature of 1,173K while chemical activation with nitric acid and hydrogen peroxide at ambient temperature. The adsorption studies of a basic dye, methylene blue, on the activated carbon were investigated. The effects of various experimental parameters like contact time, adsorbent dosage, MB concentration, temperature and pH were studied using batch adsorption experiments. The characterization of the activated carbon was accomplished by using BET-N2 adsorption, Temperature programmed decomposition (TPD) and Thermogravimetric analysis (TGA). The results obtained from adsorption studies follow Langmuir adsorption isotherm with maximum monolayer capacity of 94.33 mg/g for CCC, 64.93 mg/g for SCC, 7.02 mg/g for NCC and 4.04 mg/g for PCC. The kinetics of adsorption was analyzed by different kinetic models like pseudo first order, pseudo second order, intraparticle diffusion and Evolich. Among these, pseudo second order was found to be the most appropriate to study the adsorption of MB on physically activated carbon. The process was found to be endothermic with enthalpy change, ΔH (kJ mol-1) of 43.27 (CCC), 38.45 (SCC), 151.63 (NCC) & 72.29 (PCC) and entropy change, ΔS (kJ mol-1) of 1.57 (CCC), 1.33 (SCC), 5.09 (NCC) and 2.41 (PCC) for a temperature change of 300-330 K. The negative value of ΔG (kJ mol-1), of -29.92 (CCC), -11.14 (SCC), -7.09 (NCC) and -2.14 (PCC), suggests the spontaneous adsorption of MB on activated carbon

FACILE SYNTHESIS, SPECTRAL STUDIES, DFT CALCULATIONS AND BIOLOGICAL ACTIVITIES OF NOVEL NI (II), CU (II), AND PD (II) COMPLEXES OF THIADIAZOLE ANALOGS

Objective: A facile synthesis of some novel Schiff base derivatives of 2-substituted-5-amino-thiadiazoles along with their Ni (II), Cu (II), and Pd (II) complexes were achieved by sonication and the conventional method. In addition to establish the structure by DFT studies and to explore antimicrobial and anticancer activities of these novel compounds.Methods: The precursor 2-substituted-5-amino-thiadiazoles (T1-T3), target ligands and their metal complexes were synthesized by ultra-sonication and conventional means. The isolated products were thoroughly characterized by physical and spectroscopic techniques including 1H-NMR, [13]C-NMR and IR spectroscopy. All characterized compounds were screened for antimicrobial activities using well diffusion method, and MTT assay was performed for cytotoxicity.Results: All novel compounds were synthesized by a green route i.e. ultra sonication and a noticeable improvement in yield with shorter reaction time than the conventional method were observed. The octahedral geometry was proposed for Ni (II)/Cu (II) complexes whereas square planar for Pd (II) complexes on the basis of the spectral techniques which were supported by DFT analysis by Gaussian03. On the analysis of antimicrobial activities, the compound T7 and T10 showed maximum antibacterial and antifungal activities respectively. However, compounds T25, T37, T31 found to be a potential cytotoxic compound with IC50 value 0.469, 0.865 and 1.131 μM respectively.Conclusion: Analysis of synthetic protocol, it could be concluded that ultra-sonication is the better method to synthesize these potential biological active moiety. On the whole Cu (II) and Ni (II) complexes showed promising activity towards all microorganisms while Pd (II) complex emerged an excellent moiety in carcinoma cell line

EARTHLY AND PRACTICAL TRANSMITTING FOR SUBMERGED REMOTE SYSTEM

Submerged remote sensor systems (UWSNs) have been appeared as an encouraging innovation to screen and investigate the seas in lieu of customary undersea wireline instruments. In any case, the information get-together of UWSNs is still seriously restricted on the grounds that of the acoustic channel correspondence qualities. One approach to enhance the information gathering in UWSNs is through the plan of steering conventions thinking about the special attributes of the submerged acoustic correspondence and the profoundly unique system topology. In this paper, we propose the GEDAR directing convention for UWSNs. GEDAR is an anycast, geographic and entrepreneurial directing convention that courses information bundles from sensor hubs to different sonobuoys (sinks) at the ocean's surface. At the point when the hub is in a correspondence void locale, GEDAR changes to the recuperation mode strategy which depends on topology control through the profundity alteration of the void hubs, rather than the conventional methodologies utilizing control messages to find and keep up steering ways along void districts. Recreation comes about demonstrate that GEDAR fundamentally enhances the system execution when contrasted and the gauge arrangements, even in hard and troublesome versatile situations of extremely meager and exceptionally thick systems and for high system movement loads

A Novel Rescue System At Congested Traffic Cities

In this paper, I have presented to overcome major problems in modern urban areas which have caused much uncomfortable for the ambulance due to the traffic. Moreover road accidents in the city have been nonstop and to bar the loss of life due to the accidents is even more crucial. To implement this we introduce a scheme called AARS (Automatic ambulance rescue system). The main theme behind this scheme is to provide a smooth flow for the ambulance to reach the hospitals in time and thus minifying the expiration of many lives through the GSM, GPS and different sensors. The idea behind this scheme is to implement a ITS which would control mechanically the traffic lights in the path of the ambulance

Toward a Critical Toponymy Framework for Named Entity Recognition: A Case Study of Airbnb in New York City

Critical toponymy examines the dynamics of power, capital, and resistance through place names and the sites to which they refer. Studies here have traditionally focused on the semantic content of toponyms and the top-down institutional processes that produce them. However, they have generally ignored the ways in which toponyms are used by ordinary people in everyday discourse, as well as the other strategies of geospatial description that accompany and contextualize toponymic reference. Here, we develop computational methods to measure how cultural and economic capital shape the ways in which people refer to places, through a novel annotated dataset of 47,440 New York City Airbnb listings from the 2010s. Building on this dataset, we introduce a new named entity recognition (NER) model able to identify important discourse categories integral to the characterization of place. Our findings point toward new directions for critical toponymy and to a range of previously understudied linguistic signals relevant to research on neighborhood status, housing and tourism markets, and gentrification.Comment: Accepted at EMNLP 2023 (main track

Thermogravimetric Quantification of Biodiesel Produced via Alkali Catalyzed Transesterification of Soybean oil

The aim of this study was to demonstrate the use of thermogravimetric analysis (TGA) as a potential screening method for monitoring biodiesel production by transesterification of soybean oil with methanol. Soybean oil and commercially available biodiesel were mixed in varying proportions by weight as standards. In addition, mixtures of different biodiesel/soybean oil ratios were also created by periodically interrupting base-catalyzed transesterification of soybean oil with methanol. The mixtures produced by both approaches were analyzed with TGA over a temperature range of 25−500 °C. The results were then compared with analytical data obtained by proton nuclear magnetic resonance spectroscopy (1H NMR spectroscopy), an industry standard for biodiesel quantification. It was found in the TGA experiments that a significant weight loss at ca. 150 °C correlated to the volatilization of biodiesel. The relative weight losses in both sets of mixtures correlated well to the proportion of biodiesel present in the transesterification samples, and the results from both analytical methods were in good agreement (±1.5%). Thus, TGA is a simple, convenient, and economical method for monitoring biodiesel production

Novel Characterization Method of Biodiesel Produced from Soybean Oil using Thermogravimetric Analysis

The aim of this study was to demonstrate thermogravimetric analysis (TGA) as a potential method for monitoring biodiesel production. Soybean oil and commercial biodiesel were mixed in different proportions by weight. Mixtures of different biodiesel/soybean oil ratios were also created by interrupting a base-catalyzed transesterification process for producing biodiesel at various times. The mixtures produced by both approaches were analyzed with TGA. The results were then compared with data obtained by proton nuclear magnetic resonance spectroscopy ( 1HNMR spectroscopy). The relative weight losses in both sets of mixtures we generated correlated well to the proportion of biodiesel present in the sample. The results from both analytical methods were in good agreement and within a deviation of 5%. Thus, TGA is a simple, convenient and economical method for monitoring biodiesel production

Structural Effects of Various Commonly used Disinfectant Solutions on Gutta-Percha: An Atomic Force Microscopic Study

Introduction: Gutta-percha cones can be contaminated by various ways. Literature revealed several methods for rapid decontamination of gutta-percha cones in dentistry. Atomic force microscope (AFM) is a well-established methodology for structural characterization of materials. Aim: The purpose of the study is to evaluate the effects of 5% sodium hypochlorite 2% chlorhexidine, 2.2% glutaraldehyde, 6% hydrogen peroxide on the surface structure of standardizedgutta-percha cones in their respective cold sterilization times 1, 10, 15, 10 minutes respectively as found in many studies. Materials and methods: Forty standardized gutta-percha cones (ISO standardized size 60) were cut 3 mm from the tip, attached to a glass base and immersed in 5% sodium hypochlorite, 2% chlorhexidine, 2.2% glutaraldehyde, 6% hydrogen peroxide for 1, 10, 15, 10 minutes. After this, the samples were positioned in the atomic force microscope. Theanalyses were performed between 1 and 2 mm from the tip after each period of immersion in NaOCl. Gutta-percha cone without any NaOCl treatment were used as control. Root mean square (RMS) parameters for contact mode imaging variations were measured. Results: The differences between RMS values were testedby ANOVA with Fisher’s protected LSD test for multiple comparisons (p < 0.05). Aggressive deteriorative effects on gutta-percha cone elasticity were observed for 5.25% NaOCl at 1 minute when compared to the control (p < 0.05). In addition, 2% chlorhexidine has caused topographic changes after 15 minutes when compared to the control (p < 0.05). Conversely, 2.2% glutaraldehyde, 6% hydrogen peroxide solution did cause minimal alteration on topography or elasticity of gutta-percha cone structure when compared to the control (p > 0.05). Conclusion: Six percent hydrogen peroxide and 2.2% glutaraldehyde are safe alternative for chair side decontamination of gutta-percha cones when compared to 5.25% NaOCl and 2% chlorhexidine.&nbsp

RSTMH Special Report on Snakebite

To mark International Snakebite Awareness Day on Thursday 19 September, RSTMH is publishing a report on community groups from around the world who are currently leading the fight against snakebites locally, as well as hosting a day of events at the European Congress on Tropical Medicine and International, which we are hosting in Liverpoo