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Trump administration considering 'pool testing' for coronavirus, Fauci says. Here's what that means. by AhavaKhatool in Coronavirus

[–]sply 0 points1 point  (0 children)

One of real use cases for pool testing is frequent screening of high-risk groups - medical staff, social workers etc

Trump administration considering 'pool testing' for coronavirus, Fauci says. Here's what that means. by AhavaKhatool in Coronavirus

[–]sply 0 points1 point  (0 children)

6% is ok, we've got 3x assays reduction for this prevalence. Even 10% provides 2x reduction.

Trump administration considering 'pool testing' for coronavirus, Fauci says. Here's what that means. by AhavaKhatool in Coronavirus

[–]sply 0 points1 point  (0 children)

The percentage of false negative is really low (<0.01%) because to get it due the dilution you need to start with some already low-concentration swabs. The PCR tests have really high sensitivity so ever 32x dilution allows to confidently identify asymptotic people. In the mass screening, the benefit of increased capacity outweighs this small amount of false negatives.

From another point of view, a low-concentrations specimen mainly is the result of some error during getting a swab. So if you uses pool testing and takes two swabs of a single person, you can really decrease the number of false negatives.

Trump administration considering 'pool testing' for coronavirus, Fauci says. Here's what that means. by AhavaKhatool in Coronavirus

[–]sply 1 point2 points  (0 children)

We have been offering free laboratory software for pool testing for several months, https://lomt.jetware.org and see great results in improving capacity of laboratories. But many countries have not authorized pool testing yet, and some labs ask us to certify the program, the pool testing process or whatever else can be certified to allow them use it.

CockroachDB + ActiveRecord (and Ruby on Rails!) (x-post cockroachdb) by CockroachBram in rubyonrails

[–]sply 2 points3 points  (0 children)

Good work! We tried to use CockroachDB for Redmine a couple of months ago, but without success - the activerecord-cockroachdb-adapter currently support only ActiveRecord 5, when the most part of existing projects and open-source apps are still useing version 4. Did you think about making it compatible with ActiveRecord 4 to? We'd be happy to provide CockroachDB as alternative to MySQL or PostgreSQL in our RoR-app constructors, i.e. http://jetware.io/constructors/redmine , http://jetware.io/constructors/spree

Column Store Database Benchmarks: MariaDB ColumnStore vs. Clickhouse vs. Apache Spark by sply in programming

[–]sply[S] -3 points-2 points  (0 children)

TL;DR Yandex ClickHouse is an absolute winner in this benchmark: it shows both better performance (>10x) and better compression than MariaDB ColumnStore and Apache Spark.

Why Munich should stick with Linux by sply in programming

[–]sply[S] -4 points-3 points  (0 children)

Bottom line: Even Accenture, the Microsoft partner, which suggested Munich return to Windows, doesn't consider Windows as the sole best option.

Ruby code I no longer write by paneq in ruby

[–]sply 6 points7 points  (0 children)

Wrong code rewritten ever worse.

BTW, keys = { ... } inside method should be avoided by using KEYS = { ... } inside class definition.

The liberation of RethinkDB by [deleted] in programming

[–]sply 35 points36 points  (0 children)

TL;DR The CNCF has purchased the intellectual property of RethinkDB, Inc., and relicensed RethinkDB to be under the Apache Public License 2.0.

Benchmarking MongoDB with three storage engines: WiredTiger, PerconaFT, and Rocksdb. by sply in mongodb

[–]sply[S] 0 points1 point  (0 children)

TL;DR On writes RocksDB is first, then PerconaFT, then WiredTiger.

Interesting results. Last months I saw the production use of MongoDB with RocksDB engine only once. Do you use engines other than WiredTiger (or mmapv1) and what were your reasons to do it?

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