boshomi

1,306 karmajoined 9 лет назад

Editor in german wikipedia

Submissions

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1 pointsby boshomi7 дней назад0 comments

Google loses fight over record $4.7B EU antitrust fine

300 pointsby boshomi12 дней назад234 comments

"The Duck and the DataFrame: A Data Engineer's Journey with DuckDB" PyCon AU2025 [video]

1 pointsby boshomi5 месяцев назад0 comments

From Offloading to Engagement (Study on Generative AI)

1 pointsby boshomi5 месяцев назад1 comments

Nested Parquet Is Flat, Why Not Use It? How to Scan Nested Data with On-the-Fly

1 pointsby boshomi8 месяцев назад1 comments

Samsung hikes memory chip prices by up to 60% as shortage worsens, sources say

8 pointsby boshomi8 месяцев назад1 comments

Beyond Quacking: Deep Integration of Language Models and RAG into DuckDB

1 pointsby boshomi8 месяцев назад1 comments

Linus Torvalds, Creator of Linux and Git, in Conversation with Dirk Hohndel [video]

8 pointsby boshomi8 месяцев назад0 comments

Long-term stability for perovskite solar cells: a big step forward

helmholtz-berlin.de

2 pointsby boshomi8 месяцев назад1 comments

Opinion: The era of 'free' excess renewable energy is over

utilitydive.com

3 pointsby boshomi8 месяцев назад0 comments

Backfire: Export Controls Helped Huawei and Hurt U.S. Firms

1 pointsby boshomi9 месяцев назад0 comments

DuckLake – SQL-Powered Lakehouse Format for the Rest of Us by Prof. H. Mühleisen [video]

6 pointsby boshomi9 месяцев назад0 comments

comments

2 месяца назадdiscuss

Wikipedia category namespace: https://en.wikipedia.org/wiki/Category:Articles

2 месяца назадdiscuss

Nuclear power has been killed off by economic forces; there’s no turning back. Solar and wind power generate cheap electricity in abundance, and midday electricity prices in Europe regularly dip into negative territory (as low as minus €500 (sic!) on May 1!).

Modern grids do not require high-risk investments in ultra-inert baseload power that ultimately fails to find a market; instead, they require low-risk investments in highly flexible power sources, such as batteries or pumped-storage facilities and transmission upgrades, that can capture surplus electricity at low cost (sometimes negativ) and sell it hours later at favorable prices.

The 2036 electricity futures price for Germany is €70/MWh. The break-even point for France’s EDF for old nuclear power plants that had long since been written off financially was at roughly the same level in 2020. Due to rising labor costs, their break-even point is now significantly higher. There were solid economic reasons why EDF was recently nationalized 100%. New nuclear power plant construction in France is a foreseeable economic disaster. Private investors would have fled long ago.

2 месяца назадdiscuss

MS Access can use DBF files almost as if they were standard Access tables. This was particularly useful when working with ESRI Shapefiles, as it allowed the DBF files to be edited in Access and the changes to be viewed directly in ArcGIS. When editing maps, Access was often more convenient than the ESRI Editor.

2 месяца назадdiscuss

Wind and solar power are remarkably stable in Europe. Last year, the average weekly electricity output was 14.0TWh; not a single week fell below 10.5 TWh.

Weather fronts move across the continent on a very regular basis; when the wind dies down, the sun shines more.

2 месяца назадdiscuss

Powerprice in Germany today minus 500€/MWh. Nuclear power is economic madness in an environment where we see negative electricity prices practically every day.

2 месяца назадdiscuss

Nuclear energy is pure economic madness in a context where wind and solar power are generating a surplus of electricity. Today, May 1, electricity prices in Europe are in some cases at the technical minimum of minus €500/MWh.

Thermal power generation, which is difficult to control, is completely unnecessary in an environment where we have negative electricity prices practically every day from March to October. In Europe, we need rapidly controllable energy sources—obviously more storage capacity.

Due to the many hours during which electricity prices are close to zero, the economically viable full-load hours of a nuclear power plant are reduced to barely 3,000 hours per year, effectively tripling the real levelized cost of electricity (LOCE). In addition to the high costs of nuclear power plants, there is also the enormous expense incurred by the government for military and police security at the facilities.

Since the government prioritizes nuclear power, this leads to heavily manipulated electricity prices, with homeowners with solar panels being among the biggest losers, as they are required to feed electricity into the grid but are effectively paid the full negative prices (usually via weighted average pricing methods)

5 месяцев назадdiscuss

Michael Gerlich : »From Offloading to Engagement: An Experimental Study on Structured Prompting and Critical Reasoning with Generative AI«

https://doi.org/10.3390/data10110172

5 месяцев назадdiscuss

“The Party told you to reject the evidence of your eyes and ears. It was their final, most essential command.”

“Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right.” ― George Orwell, 1984 (2026?)

6 месяцев назадdiscuss

The shift from an engineer-led corporation to an MBA-led corporation has brought Boeing close to the brink of collapse.

7 месяцев назадdiscuss

504 Gateway Time-out 'The server didn't respond in time.

(from central Europe)

8 месяцев назадdiscuss

… Key Generation and Joins

8 месяцев назадdiscuss

... watching TV and eating tofu from Argentina

8 месяцев назадdiscuss

in Proceedings of the VLDB Endowment, Vol. 18, No. 12 doi:10.14778/3750601.3750685

pdf: https://www.vldb.org/pvldb/vol18/p5415-mhedhbi.pdf

8 месяцев назадdiscuss

> »This has even boosted efficiency to almost 27%, which represents the state-of-the-art. After 1,200 hours of continuous operation under standard illumination, no decrease in efficiency was observed.«

Kim, M. et al. Conformal quantum dot–SnO2 layers as electron transporters for efficient perovskite solar cells. Science 375, 302–306 (2022). https://doi.org/10.1038/s41566-025-01791-1

8 месяцев назадdiscuss

Why not just use Ducklake?[1] That reduces complexity[2] since only DuckDB and PostgreSQL with pg_duckdb are required.

[1] https://ducklake.select/

[2] DuckLake - The SQL-Powered Lakehouse Format for the Rest of Us by Prof. Hannes Mühleisen: https://www.youtube.com/watch?v=YQEUkFWa69o

8 месяцев назадdiscuss

no, this are real world prices

https://www.infolink-group.com/spot-price/ https://wind.in-en.com/html/wind-2462559.shtml (chinese example)

BESS 5MWh 52 USD/kWh: https://www.metal.com/Battery-Cell-And-Module/202407100001

Yes, electricity is becoming very cheap in China, and it will be difficult for the West to keep up here. Exorbitant US tariffs are also counterproductive, as they only serve to secure monopoly profits for old utilities.

8 месяцев назадdiscuss

Base load becomes very expensive under free and fair market conditions. The reason is simple: wind and PV are extremely cheap, and surplus capacity costs little. PV module price in EU is just 0.086 UDS/W fob. Wind turbine price in China ~2200Yuan/kW inclusive tower.

In a free market, this leads to attractive conditions for batteries, and that is where the problem of base load begins: there is a lack of real demand, and base load then remains unused because its OPEX cannot compete with wind and PV.

There's just one problem. There is virtually no free and fair market in the electricity market. Utilities lobby very successfully for highly regulated markets to protect their monopolies. Nuclear power requires massive government protection from competition, which makes it attractive to utilities.

9 месяцев назадdiscuss

>“In our talk, we will describe the design rationale of the DuckLake format and its principles of simplicity, scalability, and speed. We will show the DuckDB implementation of DuckLake in action and discuss the implications for data architecture in general.

Prof. Hannes Mühleisen, cofounder of DuckDB:

[DuckLake - The SQL-Powered Lakehouse Format for the Rest of Us by Prof. Hannes Mühleisen](https://www.youtube.com/watch?v=YQEUkFWa69o) (53 min) Talk from Systems Distributed '25: https://systemsdistributed.com

10 месяцев назадdiscuss

You should never blindly trust Excel when using CSV files. Try this csv file:

    COL1,COL2,COL3 
    5,"+A2&C1","+A2*8&B1"

5 лет назадdiscuss

Kevin Beaumont:

   »The Facebook outage has another major impact: lots of mobile apps constantly poll Facebook in the background = everybody is being slammed who runs large scale DNS, so knock on impacts elsewhere the long this goes on.«

https://twitter.com/GossiTheDog/status/1445118907187175427