The fair exchange problem is key to trading electronic items in systems of mutually untrusted parties. In modern variants of such systems, each party is equipped with a security module. The security modules trust each other but can only communicate by exchanging messages through their untrusted host parties, that could drop those messages. We describe a synchronous algorithm that ensures determ...

Security focused OS (Secure OS) is attracting attention as a method for minimizing damage caused by various intrusions. Secure OSes can restrict the damage due to an attack by using Mandatory Access Control (MAC). In some projects, secure OSes for Linux have been developed. In these OSes, different implementation methods have been adopted. However, there is no method for easily evaluating the p...

Ulcerative colitis and Crohn's disease continue to baffle us with regard to their aetiology and pathogenesis. Indeed, our understanding has increased little since the early days of ulcerative colitis when the major debate concerned the role of the intestinal flora and the host's response to it. It seems well established that the familial incidence is about 10-15% and recent studies from Sweden,...

Platypnea orthodeoxia is a rare syndrome that describes breathlessness on standing that resolves on lying flat. We present a previously healthy patient who developed platypnea orthodeoxia in her eighth decade of life. Cardiovascular imaging demonstrated an atrial septal defect, extensive Chiari network and atrial septal hypertrophy. We propose the development of lipomatous atrial septal hypertr...

Postoperative data were obtained at cardiac catheterization in twelve patients studied 6-29 months following Mustard's operation for transposition of the great arteries (TGA) to assess the incidence and severity of abnormalities of right ventricular (RV) function. Age at operation was 5-13 months in seven patients (infant group) and 19-25 months in the remaining five patients. RV end-diastolic ...

Case report The patient was initially palliated with balloon atrial septostomy before undergoing Mustard repair at age 1. The subsequent course was complicated by both inferior vena cava baffle stenosis and obstruction to pulmonary venous flow requiring surgical correction. Following these procedures, a dual-chamber permanent pacemaker was implanted for bradycardia at age 22 owing to presumed s...

One hundred and twenty patients with transposition of the great arteries (TGA) were encountered over a decade. Survivors have been followed until after definitive repair, and 39% were alive when reviewed. The majority (69%) had no significant communication between the pulmonary and systemic circulations. Of 48 patients in this poor-mixing group who had an atrial septectomy, 23 (48%) survived to...

Ogee spillway is the most important structure used to get rid of excess water during flood. Scouring phenomenon occurring in downstream region due high energy dissapation an envitable. This study aims reduce amount scour occurred at stilling basin ogee by using three dissipation blocks namely as baffle, triangle and stepped blocks. A new distribution was proposed for each type dissipated block,...

As part of the Advanced Virgo upgrade for O5 observation run in 2026, a more powerful laser and larger end mirrors Fabry–Perot cavities will be installed. The new optical configuration increase beam waist cryogenic trapping area close to towers. This could require enlarging apertures vacuum pipe, now dictated by presence baffle, order avoid clipping noise due coupling with baffle vibrations, po...