Constructing a digital museum with a large-scale archive for endangered languages

In this presentation we will propose a design for a digital museum for endangered languages. Just like a real museum, the digital museum proposed here consists of (1) a storage space, where items are archived, and (2) an exhibition space, where a selection of items from the storage are exhibited. Currently, in language documentation and conservation, the archives and the web pages are treated separately. Language archives are created mainly for the purpose of storing language data permanently for future reference. The web spaces for language conservation or exhibition are usually constructed without direct reference to the archived data. In our previous work presented at the first ICLDC, we proposed a basic design for a digital museum and demonstrated its prototype, featuring Nishihara village, where Ikema, a dialect of Miyako, one of the endangered languages of Ryukyuan, is spoken. It consisted of three layered digital spaces, the first layer is used for the exhibition, the second for the storage of past exhibits and the third for the raw data. The proposed digital museum has been implemented by an open source content management platform, providing a webpage easily updatable and extendable to other languages, making a step forward in the documentation and conservation of endangered languages. The museum was made public early this year (www.kikigengo.jp). As it is, however, the site has not been linked to the data archives, mostly due to technical reasons. With the recent development of cloud technologies and services, however, we are now able to construct a digital museum, in which the large-scale archive space is directly linked with an exhibition space. The archive is constructed in a large-scale cloud space from which files can be directly linked to the web exhibit space. We will use an open source video asset management platform on the private cloud service at our university, which manages audio-visual files and controls the security and privacy of the archives constructed on the cloud. The archive space can be compartmentalized into “publishers,” each of which can serve as a distinct password protected archive for a different language conservation project. The publishers can also be used for exchanging files with other members of the same project. The system enables us to construct a digital space for endangered languages linked to a large-scale archive at an individual level and at a manageable price, thereby providing us with a powerful tool for language documentation and conservation

Antegrade slow pathway mapping of typical atrioventricular nodal reentrant tachycardia based on direct slow pathway capture

Background: Radiofrequency (RF) ablation of typical atrioventricular nodal reentrant tachycardia (tAVNRT) is performed without revealing out the location of antegrade slow pathway (ASp). In this study, we studied a new electrophysiological method of identifying the site of ASp. Methods: This study included 19 patients. Repeated series of very high-output single extrastimulations (VhoSESts) were delivered at the anatomical slow pathway region during tAVNRT. Tachycardia cycle length (TCL), coupling interval (CI), and return cycle (RC) were measured and the prematurity of VhoSESts [ΔPM (= TCL – CI)] and the prolongation of RCs [ΔPL (= RC – TCL)] were calculated. Pacing sites were classified into two categories: (i) ASp capture sites [DSPC(+) sites] were calculated. Pacing sites were classified into two categories: (i) ASp capture sites [DSPC(+) sites, where two different RCs were shown, and ASp non-capture sites [DSPC(-) sites], where only one RC was shown. RF ablation was performed at DSPC(+) sites and/or sites with catheter-induced mechanical trauma (CIMT) to ASp. Results: DSPC(+) sites were shown in 13 patients (68%). RF ablation was successful in all patients without any degree of atrioventricular block nor recurrence. Total number of RF applications was 1.8 ± 1.1. Minimal distance between successful ablation sites and DSPC(+)/CIMT sites and His bundle (HB) electrogram recording sites was 1.9 ± 0.8 mm and 19.8 ± 6.1 mm, respectively. ΔPL of more than 92.5 ms, ΔPL/TCL of more than 0.286, and ΔPL/ΔPM of more than 1.565 could identify ASp with sensitivity of 100%, 91.1%, and 88.9% and specificity of 92.9%, 97.0%, and 97.6%, respectively. Conclusions: Sites with ASp capture and CIMT were close to successful ablation sites and could be useful indicators of tAVNRT ablation

Effects of cardiopulmonary resuscitation instructions on the outcomes of out‐of‐hospital cardiac arrest: An analysis of the JAAM‐OHCA registry

Abstract Aim To determine whether dispatcher‐provided cardiopulmonary resuscitation (CPR) instructions improve the outcomes of out‐of‐hospital cardiac arrest (OHCA). Methods Cases registered in the Japanese Association for Acute Medicine Out‐of‐Hospital Cardiac Arrest (JAAM‐OHCA) Registry between June 2014 and December 2019 were included. Cases in which the dispatcher provided CPR instructions to the bystander were included in the “Instructions” group”, and cases without CPR instructions were included in the “No Instructions” group. The primary outcome was the proportion of patients with a favorable neurological outcome, defined as a Glasgow–Pittsburgh cerebral performance category scale of 1 to 2 at 1 month after OHCA. Results Overall, 51,199 patients with OHCA were registered in the JAAM‐OHCA Registry during the study period. Of these, 33,745 were eligible for the study, with 16,509 in the Instructions group and 17,236 in the No Instructions group. The proportion of patients with a favorable neurological outcome at 1 month after OHCA was inferior in the Instructions group than in the No Instructions group (2.3% versus 3.0%, p < 0.001). After adjustment for patient background characteristics, no association was found between CPR instructions provided by a dispatcher and favorable neurological outcomes at 1 month after OHCA (adjusted odds ratio, 1.000; 95% confidence interval, 0.869–1.151, p = 0.996). Conclusion The present study found no clear clinical benefit of dispatcher‐provided CPR instructions on the neurological outcomes of cases with OHCA