Quadratic Signaling Games with Channel Combining Ratio

In this study, Nash and Stackelberg equilibria of single-stage and multi-stage quadratic signaling games between an encoder and a decoder are investigated. In the considered setup, the objective functions of the encoder and the decoder are misaligned, there is a noisy channel between the encoder and the decoder, the encoder has a soft power constraint, and the decoder has also noisy observation of the source to be estimated. We show that there exist only linear encoding and decoding strategies at the Stackelberg equilibrium, and derive the equilibrium strategies and costs. Regarding the Nash equilibrium, we explicitly characterize affine equilibria for the single-stage setup and show that the optimal encoder (resp. decoder) is affine for an affine decoder (resp. encoder) for the multi-stage setup. For the decoder side, between the information coming from the encoder and noisy observation of the source, our results describe what should be the combining ratio of these two channels. Regarding the encoder, we derive the conditions under which it is meaningful to transmit a message.Comment: 19 pages, 2 figure

Quadratic Signaling Games with Channel Combining Ratio

In this study, Nash and Stackelberg equilibria of single-stage and multi-stage quadratic signaling games between an encoder and a decoder are investigated. In the considered setup, the objective functions of the encoder and the decoder are misaligned, there is a noisy channel between the encoder and the decoder, the encoder has a soft power constraint, and the decoder has also noisy observation of the source to be estimated. We show that there exist only linear encoding and decoding strategies at the Stackelberg equilibrium, and derive the equilibrium strategies and costs. Regarding the Nash equilibrium, we explicitly characterize affine equilibria for the single-stage setup and show that the optimal encoder (resp. decoder) is affine for an affine decoder (resp. encoder) for the multi-stage setup. On the decoder side, between the information coming from the encoder and noisy observation of the source, our results describe what should be the combining ratio of these two channels. Regarding the encoder, we derive the conditions under which it is meaningful to transmit a message

A rare complication in a liver transplant patient: Meckel diverticulum perforation due to biliary stent

Introduction: Meckel's diverticulum is the most common congenital lesion of the small intestine. The incidence varies between 0.5% and 2% Biliary stents can be used for the treatment of patients with bile duct complications. Intestinal perforation due migrated stents is a very rare and life threatening complication. “Perforation of the Meckel diverticulum due to stent” and no case was found in the literature. For this reason, our case has been identified as the first case seen in the literature. Case presentation: A 20 year old male patient liver transplantation was performed from a live donor. 3 years ago The patient presented at our clinic with abdominal pain, nausea and vomiting that has been present for 2 days. Abdominal computed tomography showed a foreign body in the small intestines Patient was operated in emergency conditions. Meckel Diverticulum 40 cm proximal to the ileocecal valve and a biliary drainage catheter perforating the diverticule was seen Meckel's diverticulum was excised, primary repair was performed, Postoperative recovery was uneventful. Discussion: Complication rates due to a biliary stent range between 8–10% with a mortality below 1% (Konstantinidis et al. [1]). The most feared complication due to a biliary stent is stent migration. The perforation rate due to stent migration is below 1%. It most commonly occurs in the duodenum. Patients with stent related perforations are surgically managed as other GIS perforations. Conclusions: Perforation due to stent migration should also be considered in differential diagnosis in patients with a biliary stent and Acute Abdomen. © 201

Use of bilateral glossopharyngeal nerve neurolysis in a patient with cancer of the tongue base

PMID = 2677674

Cyst of the canal of Nuck mimicking inguinal hernia

Introduction: Coley, in 1892, reported 14 cases of a hydrocele in women. He described this “affection” as being “too rare an anomaly to deserve consideration. The rarity of this finding continues to be described in more current literature of 400 cases. Case presentation: 42-year-old woman presented to the clinic with a palpable mass in her left inguinal region. On physical examination, a soft-consistency, mobile mass of about 4 cm in size was seen in the left inguinal region. The cystic lesion which was seen to be originated from the inguinal canal was excised in the exploration made by suspending the round ligament by passing through the anatomical folds with the incision made from the left inguinal region. The defect was repaired with prolene mesh after high ligation. Patient was discharged on the 1st postoperative day. Discussion: In women, a round ligament is attached to the uterus close to the origin of the fallopian tubes, and the extension of the parietal peritoneum follows the round ligament as it passes to the inguinal canal through the internal ring. Hydroceles of the canal of Nuck were not conclusively diagnosed until surgery was performed on a suspected inguinal hernia. The treatment of Nuck canale hydroceles are surgery. Ligating the prosessus vaginalis and excision of the cyst in surgical treatment will prevent recurrences. Conclusions: Nuck canal cysts should be considered in the differential diagnosis of cases of female patient's complaints of swelling in the inguinal region. © 2018 The Author

Pancreatic lymphangioma: A rare case report [Pankreasta Lenfanjiyom: Ender Bir Olgu]

Intraabdomınal lymphangioma is a rare disease. Pancreatic counterpart occurs as cystic mass and should be kept in mind in patients with cystic pancreatic lesions. It is important to diagnose preoperatively to choose therapy modality. In this paper, we present a rare case of pancreatic lymphangioma which was diagnosed incidentally. © 2019 by The Medical Bulletin of University

Interatrial septal aneurysm secondary to a turbulant jet from tricuspid valve after atrial saptal defect closure

Interatrial septal aneurysm is a relatively a frequent clinical entity which is usualy well identified by echocardiographic techniques. Although clinical implications are not well defined, it may assume significance by increasing the risk of cardioembolic events such as stroke in case of concomitance of other cardiac abnormalities such as patent foramen ovale and atrial septal defects. Another conspicious feature of this clinical entity is the potantial to be the initiating mechanism of supraventricular arrythmia. Percutaneous closure devices are indispensable for the treatment of atrial septal defects but they can also cause various results such as changes in the configuration of the atria. In this paper we report a case of an interatrial septal aneurysm which develops due to a turbulant jet from tricuspid valve after atrial septal defect closure and presents with supraventicular arrythmia

Are there any effects of chronic carbon monoxide exposure on argyrophilic nucleolar-organizing region-associated protein synthesis in rat myocardium?

WOS: 000381951900002PubMed: 26462711The aims of the study are to detect whether there are any possible effects of chronic carbon monoxide (CO) exposure on the argyrophilic nucleolar-organizing region (AgNOR)-associated protein synthesis and evaluate any possible relationship between the amount of AgNOR protein and the level of myocardial injury also and between AgNOR and histopathological evaluation methods. Adult male albino Wistar rats (n = 18) were randomly divided into three groups (groups A, B, and C). Group A served as control, while groups B and C were rats exposed to CO gas chrbnically (1000 and 3000 ppm CO concentration with a flow rate of 4 L/min for 30 min/day for 7 days, respectively). Total AgNOR area/nuclear area (TAA/NA) and the mean AgNOR numbers for each myocyte nucleus were determined. There were significant differences among all groups for TAA/NA ratio. These differences were not significant for mean AgNOR numbers. According to the histopathological evaluation scores, there were significant differences between the groups. The differences were significant among the groups for loss of sarcomere pattern. A strong positive correlation between histopathological injury scores and TAA/NA ratio was found (R-sq = 0.48; p = 0.002), however, the correlation was not significant for mean AgNOR numbers (R-sq = 0.08; p = 0.25). In conclusion, TAA/NA ratio can be used as an indicator for obtaining information about the level of myocardial damage instead of histopathological evaluation scores

Is one-time carbon monoxide intoxication harmless? Evaluation by argyrophilic nucleolar-organizing regions staining method

Yaykasli, Kursat/0000-0001-7550-6370; Saritas, Ayhan/0000-0002-4302-1093; Saritas, Ayhan/0000-0002-4302-1093; Kaya, Ertugrul/0000-0003-0081-682X; Kandis, Hayati/0000-0001-9151-6050WOS: 000346643700003PubMed: 24812150In carbon monoxide (CO) poisoning, CO affects the oxygen-carrying capacity of the hemoglobin molecule. Nucleolar-organizing regions (NORs) are genetic loci on chromosomes that are composed of ribosomal DNA and proteins. NORs can be stained with silver. A total of 18 rats were exposed to CO in three different concentrations (1000, 3000, and 5000 ppm) with 6 rats as controls. The animals were euthanized 7 days after CO intoxication. Lung tissues were taken, embedded in paraffin blocks, and sectioned at 5 m thickness. Argyrophilic nucleolar-organizing region (AgNOR) staining was carried out. One hundred nuclei per individual were evaluated, and total AgNOR number per total nuclear number and total AgNOR area per nuclear area (TAA/NA) for each nucleus were analyzed. The CO exposure groups had significantly higher TAA/NA values and AgNOR numbers than the control group (p 0.05). The increase in TAA/NA value depends on the increase in the CO exposure. Significant correlations between both the AgNOR values and histopathological scoring methods were found. Therefore, AgNOR staining method may be used as an indirect indicator for evaluating the degree of cell damage rate