is done since

USAGE SUMMARY

The phrase "is done since" is not correct in standard written English.
It is typically used incorrectly when trying to indicate that something has been completed from a certain point in time. Example: "The project is done since last week."

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

12 human-written examples

*-* but no pivoting is done since matrix is positive-definite.

Stanford University

This is done since the weights of the objects decay over time.

Vietnam Journal of Computer Science

This is done since analyzing the audio signals in subbands will provide more precise information about their audio characteristics [49].

EURASIP Journal on Advances in Signal Processing

This is done since during high utilization periods, it is convenient to distribute the nodes that want to send over a longer time period.

EURASIP Journal on Wireless Communications and Networking

We consider that the tuple space is indeed implemented by a set of servers and is fault-tolerant but we do not delve into the details of how it is done since we use DepSpace [10] and the replication in tuple spaces area is well understood and essentially solved [10, 15, 18].

Journal of Internet Services and Applications

"The hardest part is figuring out how everything is done, since there really is no set process". Kaye sees a time when the rich crisscross the Gulf of Thailand islands in their yachts, and he recalls when Phuket was less developed than the Cambodian coast.

Forbes

Human-verified similar examples from authoritative sources

Similar Expressions

48 human-written examples

Little has been done since.

The Economist

Little new work has been done since.

The Guardian

Some would say it's never been done since.

The New York Times

"Look what he's done since he took over.

The New York Times

Wyoming says that may not be done since the appropriators are not parties to this proceeding.

Cornell University

Expert writing Tips

Best practice

Always use the present perfect passive ('has been done') if you are referring to a time period starting in the past (e.g., 'This has been done since 1990').

Common error

Avoid using "is done since" to describe a tradition or process that started in the past and continues today. This creates a tense mismatch. Instead of saying 'The ceremony is done since the 14th century', say 'The ceremony has been performed since the 14th century'.

Linguistic Context

The phrase "is done since" functions as a combination of a present tense passive verb followed by a subordinating conjunction. In Ludwig AI examples, it frequently appears in technical literature to provide a causal justification. However, in general English, it is often a non-standard attempt to express the present perfect passive.

Expression frequency: Common

Frequent in

Science

65%

Academia

20%

News & Media

10%

Less common in

Wiki

3%

Formal & Business

1%

Social Media

1%

Ludwig's WRAP-UP

The phrase "is done since" occupies a strange space in English usage. While Ludwig AI shows it is relatively common in specialized scientific fields to denote causality (e.g., 'this is done because...'), it is technically incorrect when referring to time. For any reference to a historical starting point or a duration of time, you must use the present perfect passive, such as "has been done since". Writers should be cautious: using this phrase in a temporal sense can make the text appear non-native or unpolished, even if the surrounding technical content is high-quality.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

has been done since

Uses the present perfect passive to correctly denote an action continuing from a past point in time.

is performed because

Clearer causal phrasing that avoids the ambiguity of the word since.

is executed since

A more formal technical synonym often found in computer science contexts.

is carried out because

Uses a phrasal verb to express causality in a formal tone.

is usually done as

Expresses a routine reason or method instead of a temporal starting point.

has been in place since

Commonly used for policies or vaccinations that started in the past.

was completed since

Focuses on the finished state rather than the ongoing process.

is necessary because

Moves from describing the action to describing the reason for the action.

has occurred since

Intransitive alternative for events that happen rather than actions being performed.

is done once

Changes the meaning from duration to a single point in time.

FAQs

Is it correct to say "is done since"?

In most cases, "is done since" is considered incorrect for temporal references. If you mean something has been happening from a specific time, you should use "has been done since". However, it may be acceptable if 'since' means 'because' in a scientific context.

What is the difference between "is done since" and "has been done since"?

The main difference is the tense. "has been done since" is the present perfect passive, which is required when referring to a span of time. "is done since" is a present passive, which usually sounds awkward or ungrammatical in a temporal context.

Can I use "is done since" to mean "is done because"?

Yes, in technical or scientific writing, authors often use "is done since" to justify an action, such as 'Pivoting is done since the matrix is positive-definite'. While common, using "is done because" is often clearer.

What can I say instead of "is done since" for a past date?

Instead of saying something like 'Vaccination is done since the 90s', use "has been conducted since" or "has been in effect since".