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Control System Security in the Shift to Open Systems
MIYACHI, Toshio,ITO, Yurie 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
The control system security is discussed while observing the trend of shifting to open system technologies.Open system is easier for attackers to exploit and appropriate security measures have to be implemented in order toprotect a business operation carried out with it.
Yosuke Miyachi,Rumi Nakabayashi,Minami Torai,Koichiro Mitsuoka,Gen Shimada,Toshimi Kaido 대한외상중환자외과학회 2023 Journal of Acute Care Surgery Vol.13 No.3
A male pedestrian in his 30’s was hit by a car and immediately taken to hospital by ambulance. On arrival, his blood pressure was 83/64 mmHg and his heart rate was 140 beats/min. Computed tomography showed extravasation of contrast medium from the lateral segment of the liver. Given the exacerbation caused by hypotension, an emergency laparotomy was performed. Temporary hemostasis was achieved by packing with gauze and a subsequent transcatheter arterial embolization. At the 2nd laparotomy, a small amount of active bleeding from the injury site was noted; therefore, an emergency lateral segmentectomy was performed. The postoperative course was uneventful and he was discharged home 8 days later. The pathology of the liver specimen revealed that a 2.5 cm hepatic hemangioma was the cause of bleeding. Traumatic rupture of hepatic hemangiomas is rare, and most reported cases are of giant hemangiomas. Our case demonstrated that even a small hemangioma can elicit life-threatening bleeding in blunt abdominal trauma.
Unruptured Paraclinoid Carotid Aneurysms Occur More Frequently in Younger Ages
Shigeru Miyachi,Reo Kawaguchi,Tomotaka Ohshima,Naoki Matsuo 대한신경중재치료의학회 2021 Neurointervention Vol.16 No.2
Purpose We investigated the age distribution of cerebral saccular aneurysms in various locations to clarify the differences by location and discuss the mechanism of formation. Materials and Methods We retrospectively assessed clinical material obtained from 1,252 unruptured aneurysms treated with endovascular embolization between 2004 and 2019. Age, sex, laterality, and size were investigated by the location of aneurysms, classified as cavernous internal carotid artery (ICA), paraclinoid ICA, supraclinoid ICA, anterior communicating artery, anterior cerebral artery, middle cerebral artery, basilar artery complex, and posterior inferior cerebellar artery. Paraclinoid aneurysms were subclassified into 3 patterns according to their projecting direction: S-type, with superior protrusion; M-type, with medial protrusion; and P-type, with posteroinferior protrusion. Results There was no significant difference by location for sex, laterality, and size. The mean age of patients with paraclinoid aneurysms (56.5 years old) was significantly lower than that of other aneurysm patients (64.3 years old). Notably, 40% of the patients with M-type aneurysms were <50 years old. This percentage was significantly higher than that of aneurysms at other locations (P<0.05). Conclusion We found a young female predominance for patients with paraclinoid carotid aneurysms. This study may suggest that congenital factors contribute to paraclinoid aneurysm formation as well acquired factors, such as hemodynamic stress, atherosclerotic wall damage, and local inflammation.