http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/277 2026-04-26T00:19:19Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/941 DEEP LEARNING BASED NECK-MOUNTED MOUTH CAPTURING DEVICE TO CLASSIFY BANGLA SILENT SPEECH SUMON, MD SHAHEENUR ISLAM; ALI, MUTTAKEE BIN DEEP LEARNING BASED NECK-MOUNTED MOUTH CAPTURING DEVICE TO CLASSIFY BANGLA SILENT SPEECH 2023-02-01T00:00:00Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/940 DESIGN AND DEVELOPMENT OF 3D SCAFFOLDS USING ADDITIVE MANUFACTURING TECHNOLOGY RAHATUZZAMAN, MD.; TASNIM, ADIBA The development of 3D scaffolds using additive manufacturing technology has revolutionized tissue engineering due to high accuracy and reproducibility. Traditional scaffold fabrication techniques have geometric and structural limitations, as well as limited mechanical strength, and additive manufacturing technology works to overcome these limitations. The main objective of this study is to design and develop 3D scaffolds using additive manufacturing technology. In this research 3D scaffolds were designed and printed with optimized parameters using additive manufacturing, and its biocompatibility and properties were evaluated. According to this study, the 3D scaffolds produced with additive manufacturing exhibited high geometric configuration, structural uniformity, and mechanical strength. The study demonstrated the promising approach for tissue engineering applications in terms of developing 3D scaffolds. Design and Development of 3D Scaffolds Using Additive Manufacturing Technology 2023-02-01T00:00:00Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/939 DEVELOPMENT OF PHEROMONE BASED SMART MOSQUITO TRAP Shefa, Archi Alam; Sefat, Sayed This thesis aimed to develop a pheromone based smart mosquito trap for reducing the regional and temporal occurrences of mosquito-transmitted pathogens. The study was mainly concerned with killing mosquitoes in a very large outdoor area without negatively impacting the physical health of living beings. The device was constructed from a 5 mm thick acrylic sheet and includes several mosquito-attracting elements, including a heating pad, UV light, CO2 cylinder, and pheromone. An exhaust fan and one particular sticky substance were used to catch the mosquitoes. The CO2 dispersion and the fan's start and end times could be controlled. Other components were running the whole time. The device used four different pheromone formulations. The formulations were made by combining different ingredients such as Cyclopentanone, Palmitic Acid, Oleic Acid, Linoleic Acid, Citric Acid, and Mushroom Extracts (Shiitake Mushroom & Reishi Mushroom). The four pheromone formulations underwent Fourier Transform Infrared Spectroscopy (FTIR), Refractive Index & Brix Test, and UV Spectrum Test, and the results were really good. The trial period of the device consisted of a total of 8 days, and each day, a different kind of pheromone formulation was used with and without CO2. The test was successful, demonstrating that the device is able to capture and kill lots of mosquitoes in a vast outdoor space without dispersing any dangerous chemicals into the atmosphere. DEVELOPMENT OF PHEROMONE BASED SMART MOSQUITO TRAP 2023-02-01T00:00:00Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/938 DEVELOPMENT OF MEDICAL IMAGE ENCRYPTION SYSTEM FOR SECURE IMAGE DATA TRANSFER HAKIM, FAIZUL; AHMED, JAHIN In recent years, due to the rapid development of digital communication medical diagnosis and treatment procedures are emerged and we can think about the establishment of ehealth. To establish such an important electronic health recording system continuous communication between patients and doctors are inevitable where data security demands the most priority. During this communication, the most important and large diagnostic data are images acquired from numerous modalities like X-ray, MRI, CT, PET, SPECT, ultrasound, etc. Since it is essential to protect the privacy of patients’ medical records, these images should be encrypted before being digitally transmitted. Conventional encryption techniques hold some drawbacks like static keys, long computational time, recognizable patterns even after encryption, a large amount of loss in the decryption process, mandatory large key size, and so on. To resolve these issues as well as to maintain a higher security level, this thesis proposes an efficient encryption-decryption system which is a combination of two renowned methods RSA and steganography with some constructive modifications. The proposed system generates images of an unidentifiable pattern after encryption in a short amount of computational time and lossless decrypted images. Besides, this proposed method produces different keys for each image dynamically that increase the security system. The claimed performances of the system were justified using different numerical and graphical measures such as PSNR, MSE, SSIM, and histograms. The proposed method ensures lossless retrieval of the shared image while preserving a high degree of robustness and efficiency. DEVELOPMENT OF MEDICAL IMAGE ENCRYPTION SYSTEM FOR SECURE IMAGE DATA TRANSFER 2023-02-01T00:00:00Z