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    Client-server based authentication against MITM attack via fast communication for IIoT
    (2018) Kara, Mustafa; Furat, Murat
    Security is an important issue that should be taken care of by every system. In recent years, however, attackers are constantly developing themselves with new techniques to obtain personal information on the network. As systems evolve, the data that needs to be protected is increasingly appreciated and carries a higher risk of attack. As with many attacks such as MITM, there are solutions against this attacks. Nevertheless, these safety measures must be developed continuously. For this reason, we have developed a new system architecture with user-defined authentication against the intruders for the systems having large amount of data transmission rate. To maintain integrity of data, over a reliable system is that all incoming data are authenticated when data send to the server, on the other hand, in this system, the user-defined authentication can provide fast communication and it can decrease authentication time. The proposed system introduced in the present study checks for any changes in our instantaneous data. Moreover, we control the data integrity on simple devices such as sensors and motors or other industrial devices. Instead of using encryption, basically client-server based authentication system is used to avoid complex operations and protect the big data.
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    Determining attitudes toward e-learning: what are the attitudes of health professional students?
    (Springer Heidelberg, 2024) Gullu, Ayla; Kara, Mustafa; Akgun, Senay
    Aim The research was carried out to determine the attitudes of nursing undergraduate students toward e-learning implemented during the COVID-19 pandemic. Subject and methods The study sample consisted of 320 undergraduate students studying at the Faculty of Health Sciences, Nursing Department of a state university. Personal Information Form and the Test of e-Learning Related Attitudes were administered to the research participants. Results Of the students, 68.8% were female and 51.6% were between the ages of 21-24. The attitude of 55.3% (177) toward e-learning is negative. Attitude scores of students aged 25-29 were significantly higher compared to those aged 17-20 and 21-24 years old (p = 0.002). The attitude scores of the students who have a computer are significantly higher than those who do not (p = 0.001). Most students did not agree with the statement E-learning will provide me with better learning opportunities than conventional learning methods. (disagree n = 121; 37.8%, strongly disagree n = 110; 34.4%). Conclusion It is noticed that e-learning is not sufficient in subjects such as conducting clinical and laboratory practices in health sciences fields with practical training like nursing, and students' attitudes are generally negative. For undergraduate health sciences education, face-to-face and online education for support purposes can be used together in theoretical courses. In addition, it is recommended to use effective online communication techniques in online courses.
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    Dual energy CT in necrotizing enterocolitis; a novel diagnostic approach
    (Tubitak Scientific & Technological Research Council Turkey, 2021) Caglar, Ozgur; Cesur, Emrullah; Sade, Recep; Firinci, Binali; Kara, Mustafa; Celikkaya, Mehmet Emin; Oral, Akgun
    Background/aim: Necrotizing enterocolitis (NEC) is one of the most important causes of morbidity and mortality in premature infants. Although there are no specific diagnostic tools, the main factors affecting prognosis are clinical and laboratory findings, and early diagnosis and treatment. In this study, we demonstrate the importance of dual-energy computed tomography (DECT) in confirming intestinal ischemia in neonates with NEC. Materials and methods: Patients diagnosed with NEC in a neonatal intensive care unit were staged according to modified Bell's classification, and DECT was performed on patients with NEC stages 2-A, 2-B and 3-A. According to their DECT reports, these patients were then separated into two groups: those with intestinal ischemia and those without intestinal ischemia. The patients with intestinal ischemia were evaluated using surgical reports, and the other patients were evaluated using clinical findings. Results: DECT was performed in 21 patients with NEC stages 2-A, 2-B and 3-A. Twelve patients (57.1%) without ischemia were followed up without surgery. Nine patients (42.9%) with ischemia on DECT were operated on, and resection and anastomosis or ileostomy and colostomy were performed. Conclusion: In patients with NEC, DECT significantly increases overall diagnostic confidence in assessing intestinal necrosis when compared with traditional diagnostic methods.