Preserve Imperceptibility and Robustness Performance on Steganography Technique based on StegaSVM-Shifted LBS Model

In image steganography, the most popular and widely used techniques is the least significant bit (LSB) that hide data into a cover-image in a spatial and discrete cosine transform (DCT) domain as well.Beside the LSB technique, there is other technique that is also influential i.e support vector machine (SVM) normally used to strengthen the embedding algorithm.Whatever techniques used in the image steganography field,the main purpose is to keep the existence of the secret-message secret.This paper designing the new model is proposed called StegaSVM-Shifted LSB model in DCT domain to preserve the imperceptibility and increase the robustness of stego-images.The StegaSVM-Shifted LSB model that has been proposed that utilize HVS and embedding technique through Shifted LSB showed a good performance

Differences level of injury severity for male and female drivers in traffic crashes in Sabah

Road traffic crash has become a big issue around the world because it has recorded a higher number of fatalities each year. Previous research has found many factors influencing injury severity between male and female drivers. However, these factors might be different in complex driving condition like mountainous areas and different vehicle composition. The main objective of this study is to examine the differences between male and female driver’s injury severity in a passenger car, four-wheel drive vehicle and van. In order to investigate the effect of topography and vehicle composition, Sabah has been selected as the study area. Separate logistics regression model for injury severity of male and female drivers were examined using traffic crash data from 2008 to 2012. The results showed that the crashes at night times and wet season were more severe than crashes on day time and dry season for male drivers only. Crashes on cross junction were more severe for female drivers. Dangerous turning behaviours that cause the crashes also contributed to the increasing severity level of female drivers. Factors which have the same effect on male and female drivers were collision type, road type, road geometry, driver age, driver errors and type of vehicle. This study gives an insightful understanding about the different factors influencing injury severity level, which involved male and female drivers in crashes in areas that are mountainous and the effect of different vehicle composition on the road

Effects of the COVID-19 pandemic on the management of ST-Segment elevation myocardial infarction in Indonesia: a cohort study [version 1; peer review: 2 approved]

Background: ST-segment elevation myocardial infarction (STEMI) is a form of acute coronary syndrome with high mortality rate. Management of STEMI should be performed as soon as possible to prevent further damage. With the emergence of coronavirus disease 2019 (COVID-19), it may face obstacles. To overcome those problems, some changes in policy focusing on fibrinolytic therapy in STEMI patients have been applied. This study aimed to identify the effects of COVID-19 in management of STEMI patients in Indonesia. Methods: This retrospective study was conducted in Dr. Cipto Mangunkusumo Hospital (CMH), the national referral center in Indonesia. We compared data between 2018 to 2019 and 2020 to 2021 as before and during COVID-19 pandemic period, respectively. We analyzed the effects of COVID-19 on STEMI patients' visits to hospital i.e., monthly hospital admission and symptoms-to-hospital, management of STEMI i.e., the strategies and time of reperfusion, and clinical outcomes of STEMI patients i.e., major adverse coronary event and mortality. Results: There was a significant statistically reduced mean of monthly hospital admissions from 11 to 7 (p = 0.002) and prolonged duration of symptoms-to-hospital during COVID-19 from 8 to 12 hours (p = 0.005). There was also a decrease in primary percutaneous coronary intervention (PPCI) procedures during COVID-19 (65.2% vs. 27.8%, p<0.001), which was accompanied by an increased number of fibrinolytic (1.5% vs. 9.5%, p<0.001) and conservative therapy (28.5% vs. 55.6%, p <0.01). Moreover, there was also a prolonged duration of diagnosis-to-wire-crossing time (160 vs. 186 minutes, p = 0.005), meanwhile, percentage of urgent PCI, door-to-needle time, and clinical outcomes were not statistically significant. Conclusions: During COVID-19 pandemic, the number STEMI patients declined in monthly hospital admission, delays in symptoms-to-hospital time, changes in type of reperfusion strategy, and delays in PPCI procedures in CMH. Meanwhile, fibrinolytic time and clinical outcomes were not affected

Pengobatan herbal ala Nabi/ Idrus

168 hal.; 16 cm