Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Image Sensor Communication for Patient ID Recognition Using Mobile Devices

Our research group has developed electronic triage tags for measuring vital signs of patients at critical accidents or disaster sites. Although they have wireless networking facilities to transmit the data to a remote server, it is helpful for doctors at the sites to display the vital signs on their visions by augmented reality. For this purpose, we need recognize identification numbers (IDs) of those tags in doctor’s vision to obtain the vital signs of the patients from the remote server. In this paper, we propose image sensor communication for ID recognition using embedded cameras in commercial off-the-shelf mobile devices. An LED is attached to a patient and controlled to send the patient ID by blinking patterns. In order for avoiding bit losses and errors due to jitter and capture delays, we derive a necessary and sufficient condition for image capturing intervals. Moreover, we have designed an image sensor communication system using Manchester code for robustness in terms of clock drift. Through experiments using a prototype, we have confirmed the proposed system can recognize more than 94 % of 8 bit IDs in 4.5 seconds on average

A Method for Functional Testing of Media Synchronization Protocols

In this paper, we propose a functional testing method of media synchronization protocols, which control the synchronization between audio and movie, described in concurrent synchronous timed I/O automata. In order to trace all test sequences (I/O event sequences) with synchronization on the model, we need to execute each I/O event at an adequate timing which satisfies the whole timing constraint for all the given test sequences. However, the outputs are given from the IUT and uncontrollable. Also each output/synchronization timing may a#ect executable timing for its succeeding I/O events in the test sequences. In this paper, we propose a technique to derive a set of time intervals which make all the given test sequences executable, and propose a method for functional testing using the technique

Clinical features of acute fibrinous and organizing pneumonia: An early histologic pattern of various acute inflammatory lung diseases.

BackgroundAcute fibrinous and organizing pneumonia (AFOP) is a rare histologic pattern of acute lung involvement with intra-alveolar fibrin deposition. However, the clinical significance of the pathological findings of AFOP remains unclear. This study aimed to explore the clinical significance of AFOP through a comprehensive clinical examination.MethodsThe medical records of patients with lung diseases accompanied by the pathological finding of intra-alveolar organization between January 2010 and December 2019 were retrospectively reviewed. The clinical and radiological findings were compared between the groups with and without the histologic pattern of AFOP.ResultsWe identified 34 patients with AFOP (AFOP group) and 143 without AFOP (non-AFOP group). The underlying diseases of the AFOP group were as follows: 19 patients had cryptogenic organizing pneumonia (OP), 5 had connective tissue diseases, 3 had radiation pneumonitis, 3 had chronic eosinophilic pneumonia, 2 had myelodysplastic syndromes, and 2 had drug-induced pneumonia. Fever was more common, the time from symptom onset to biopsy was shorter, and the serum C-reactive protein level was higher in the AFOP group than in the non-AFOP group. On high-resolution computed tomography, 85% of patients had OP pattern, and halo sign was more common in the AFOP group. Corticosteroids were effective in 94% of the patients in the AFOP group; however, recurrences were more frequent, and a higher corticosteroid dose was needed during recurrence.ConclusionsAFOP might be an early phase of a histologic pattern associated with known etiologies. In addition, it could be a marker indicating intense inflammatory diseases with a tendency of recurrence

Design and Implementation of FPGA Circuits for High Speed Network Monitors

Due to the recent progress of the Internet, we need high-speed network monitors which can observe millions of packets per second. Since several types of network attacks occur, we need to modify monitoring facilities and their capacities depending on monitoring items and network speed. In this paper, we propose (1) a methodology for designing and implementing such network monitors flexibly and (2) a high-level synthesis technique which automatically synthesizes FPGA circuits from specifications of network monitors in a model called concurrent synchronous EFSMs. The proposed technique makes it possible to synthesize an FPGA circuit suitable for given monitoring items and parameters where the designer need not consider about how pipe-line processing and parallel processing should be adopted. We have developed a tool to automatically derive FPGA circuits and evaluated the speed and size of derived circuits