Image double fragile watermarking algorithm based on block neighborhood by Yilong WANG, Zhenyu LI, Daofu GONG, Fenlin LIU

“…To address the security risks associated with fixed offset mapping in self-embedded watermarking technology, as well as the limited recovery rate of single watermarking methods, an image double fragile watermarking algorithm based on block neighborhood was proposed.The image was divided into non-overlapping blocks of size 4×4 and block truncation coding was used to generate the recovery watermark based on the image block.For each image block, a neighborhood of a proper size was specified and two mapping blocks were randomly selected from the regions within and outside the neighborhood.Then the recovery watermark was embedded into the two mapping blocks simultaneously.The image block neighborhood setting mechanism of the algorithm ensured that the image block maintains a certain distance from its corresponding mapping block.Additionally, the selection mechanism of mapping blocks inside and outside the image block neighborhood ensured a certain distance between the two mapping blocks, thereby guaranteeing the security of the watermark.In the case of continuous region tampering, the relationship between the tampered region and the neighborhood of the image block was analyzed theoretically.The analysis showed that a suitable image block neighborhood can improve the average recovery rate of the tampered area compared with the random mapping embedding algorithm.Besides, the distribution trend of the average recovery rate of the tampered area and the recovery rate of each image block in the tampered area were given by numerical calculation.It was found that the tampered area image block can be recovered 100%, some image blocks in the center of the tampered area can be recovered 100%, and the recovery rate of image blocks in tampered area will be reduced.The experimental results verify the rationality and effectiveness of the theoretical analysis.Moreover, when the neighborhood parameters are large, the proposed algorithm achieves a higher average recovery rate of the tampered region than the random mapping embedding algorithm in the case of continuous region tampering.…”
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The Realization of a Three-Dimensional Temperature Measurement System with a Two-Dimensional Sensor Array and the Demonstration of the Deformation Effect of Gravity on the Heating... by Dogan Can Samuk, Oguzhan Cakir

“…The goodness-of-fit statistical values for the derived mathematical formula for the 55 temperature measurements were calculated as the root mean square error of 1.9543 and R-squared of 99.43%, demonstrating the accuracy of the presented model.…”
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Determination of Leisure Time Orientations in University Students, The Relationship Between Leisure Time Boredom Perceptions and Social Network Sites Usage Purposes by Nazlı Deniz Öz, Metin Özlü, Erdal Taşgın

“…SPSS 16.0 statistical package program was used to evaluate the data and to find the calculated values. The data are summarized by giving percent, mean and standard deviations. …”
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Endometriosis and risk of cardiovascular disease: a systematic review and meta-analysis by Sina Parsa, Rashin Noroozpoor, Hojat Dehghanbanadaki, Sorour Khateri, Yousef Moradi

“…Pooled relative risks (RR) with 95% confidence intervals (CIs) were calculated. Study quality was assessed using an appropriate tool, and statistical heterogeneity was evaluated using the I2 statistic. …”
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The evolution of cell-free fetal DNA testing: expanded non-invasive prenatal testing and its effect on target populations by Shaozhe Yang, Yanqi He, Jingshang Lv, Rongxiang Li, Xiuhong Fu

“…The performance indicators of the positive predictive value (PPV), positive rate (PR), specificity, and sensitivity in screening for common trisomies, sex chromosomal abnormalities (SCAs), rare autosomal aneuploidies (RAAs), and CNVs were calculated. The PR or PPV of NIPT-plus for screening chromosome aneuploidy and CNVs in women of varying ages, risk factors, and clinical indications were determined.ResultsThe PRs of common trisomies, SCAs, RAAs, and CNVs in NIPT-plus were 0.71, 0.45, 0.32, and 0.59%, respectively, with 100% sensitivity and specificities ranging from 99.69 to 99.87%. …”
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Heat Stroke Warning System Prototype for Athletes: A Pilot Study by Kanchana Silawarawet, Phattarakorn Kaewchukul, Sairag Saadprai

“…This research has developed a heat stroke warning system prototype for athletes utilizing the following sensors: DHT22, GY-906-BAA MLX90614, MAX30102. The device calculates the heat stroke risk and notifies users. …”
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Russian University Cities: Expectations vs. Reality by I. D. Turgel, K. D. Bugrov, A. D. Oykher

“…The article proposes the methodology for assessing the role of universities in the socio-economic space of the city comprising: a set of calculated economic and statistical indicators; analysis of the established practice for deciding if to represent a particular city as a scientific and educational center in strategic management directives; and integral interpretation of the results obtained. …”
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Trends in growth and nutritional status of Korean toddlers and preschoolers: a cross-sectional study using 2010–2021 Korea National Health and Nutrition Examination Survey data by Annisa Turridha, Jae Eun Shim

“…The weight-for-height, height-for-age, weight-for-age, and body mass index-for-age z-scores of the participants were calculated using the World Health Organization 2006 child growth z-score reference cutoff points. …”
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Distribution Design of Bottled Mineral Water ‘Airku’ with Distribution Requirement Planning Method (DRP) by Trio Yonathan Tejakusuma, Atika Khoirun Nisa, Vindy Fitriana Martanti

“…According to company’s document, interview, and calculation the proper lot is Wagner Within Algorithm, distribution cost paid by Agentt Aneka Usaha is Rp 1.768.076 for AirKu cup, Rp 781.388 for bottle AirKu, and Rp 174.275 for AirKu gallon. …”
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Three-dimensional effects on cracked components under anti-plane loading by F. Berto, A. Campagnolo, L. P. Pook

“…The SED has been considered as a parameter able to control fracture in some previous contributions and can easily take into account also coupled three-dimensional effects. Calculation of the SED shows that the position of the maximum SED is independent of plate thickness. …”
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Diabetic Gait Is Not Just Slow Gait: Gait Compensations in Diabetic Neuropathy by Adrienne D. Henderson, A. Wayne Johnson, Sarah T. Ridge, Jonathan S. Egbert, Kevin P. Curtis, Levi J. Berry, Dustin A. Bruening

“…A full-body model with a multisegment foot was used to calculate inverse dynamics and analyze sagittal plane metrics and time series waveforms across stance phase. …”
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Performance evaluation of brain state discrimination using near-infrared spectroscopy for brain-computer interface: an exploratory case study by Akira Masuo, Takuto Sakuma, Shohei Kato

“…Random forest was used as the classifier, and the number of correct responses in the binary discrimination of the brain states were calculated by cross-validation. The exact binomial test was used for the statistical analysis, and a two-tailed test with a significance level of 5% was performed. …”
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Nonlinear FAVO Dispersion Quantification Based on the Analytical Solution of the Viscoelastic Wave Equation by Yuanqiang Li, Jingye Li, Xiaohong Chen, Jian Zhang, Chen Zhou, Wei Tang

“…Combining with the inversion results, the derivative matrix was calculated to perform nonlinear velocity dispersion estimation. …”
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Increase in assisted suicide in Switzerland: did the socioeconomic predictors change? Results from the Swiss National Cohort by Marcel Zwahlen, Nicole Steck, Christoph Junker

“…Two groups of younger (25–64 years) and older (65–94 years) persons were analysed separately and compared. We calculated crude rates and used Cox proportional hazard and logistic regression models to examine associations of assisted dying with gender, marital status, education, religion, neighbourhood socioeconomic status and other variables, and investigated trends over time.Results We identified 3941 assisted suicides among 6 237 997 Swiss residents, 80% of which occurred in the older age group. …”
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Potency of agricultural wastes in mushroom (Pleurotus sajor-caju) biotechnology for feeding broiler chicks (Arbor acre) by Charles Oluwaseun Adetunji, Isaac Oluseun Adejumo

“…Feed intake and body weight were measured weekly, while the calculation of feed conversion ratio (FCR) and weight gain was based on the data obtained. …”
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Molecular and Serological Investigation of Equine Herpesvirus Type 1 (EHV-1) and Type 4 (EHV-4) in Horses In Ibagué, Tolima by Julieth Michel Petano-Duque, Edwin Urueña-Martinez, Laura Liliana Cabezas-Callejas, Jorge Perilla-Amaya, Valentina Rueda-García, Iang Schroniltgen Rondón-Barragán, Ricaurte Lopera-Vásquez

“…EHV-1 was detected by amplifying the glycoprotein H gene through heminested PCR, and risk factors were calculated with chi-square, odds ratio, and fisher test. …”
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Pediatric and adolescent chronic myeloid leukemia: A follow-up study in Western India by Sangita A. Vanik, Dhaval Jetly, Biren Parikh, Karthik Dhandapani, Rukmini Bezbaruah

“…The treatment response was monitored and scoring was performed using mathematical calculations. Results: The mean age was 11.6 (±4.7) years. …”
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Symptoms of Dental Eruption in Patients from 6 Months to 3 Years of Age by Jaime Fernando Armijos Moreta, Catalina del Rosario Boada Zurita, Lourdes Elizabeth Menéndez Oña

“…Descriptive statistics were used to analyze the data by calculating absolute and relative percentage frequencies. …”
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Driving Safety Analysis Using Grid-Based Water-Filled Rut Depth Distribution by Jiao Yan, Hongwei Zhang, Bing Hui

“…In order to explore the impact of water-filled ruts on driving safety, a three-dimensional (3D) tire-road finite element model is established in this paper to calculate the adhesion coefficient between the tire and the road surface. …”
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Reverse Fragility Index in Plastic Surgery Randomized Controlled Trials by Rodney Ahdoot, BS, Trista M. Benítez, MPH, Chien-Wei Wang, MD, Kevin C. Chung, MD, MS

“…The Fisher exact test was used to calculate the RFI for each primary outcome. Bivariate analysis was performed to investigate the association of trial characteristics with the RFI. …”
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