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boshomi

1,306 karmajoined 9 năm trước
Editor in german wikipedia

Submissions

[untitled]

1 points·by boshomi·7 ngày trước·0 comments

Google loses fight over record $4.7B EU antitrust fine

cnbc.com
300 points·by boshomi·12 ngày trước·234 comments

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

youtube.com
1 points·by boshomi·5 tháng trước·0 comments

From Offloading to Engagement (Study on Generative AI)

mdpi.com
1 points·by boshomi·5 tháng trước·1 comments

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

dl.acm.org
1 points·by boshomi·8 tháng trước·1 comments

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

reuters.com
8 points·by boshomi·8 tháng trước·1 comments

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

vldb.org
1 points·by boshomi·8 tháng trước·1 comments

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

youtube.com
8 points·by boshomi·8 tháng trước·0 comments

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

helmholtz-berlin.de
2 points·by boshomi·8 tháng trước·1 comments

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

utilitydive.com
3 points·by boshomi·8 tháng trước·0 comments

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

itif.org
1 points·by boshomi·9 tháng trước·0 comments

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

youtube.com
6 points·by boshomi·9 tháng trước·0 comments

DOGE-Trolling Ransomware Hackers Demand $1T in Chilling Attack

forbes.com
10 points·by boshomi·năm ngoái·0 comments

comments

boshomi
·2 tháng trước·discuss
Wikipedia category namespace: https://en.wikipedia.org/wiki/Category:Articles
boshomi
·2 tháng trước·discuss
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.
boshomi
·2 tháng trước·discuss
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.
boshomi
·2 tháng trước·discuss
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.
boshomi
·2 tháng trước·discuss
Powerprice in Germany today minus 500€/MWh. Nuclear power is economic madness in an environment where we see negative electricity prices practically every day.
boshomi
·2 tháng trước·discuss
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)
boshomi
·5 tháng trước·discuss
Michael Gerlich : »From Offloading to Engagement: An Experimental Study on Structured Prompting and Critical Reasoning with Generative AI«

https://doi.org/10.3390/data10110172
boshomi
·5 tháng trước·discuss
“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?)
boshomi
·6 tháng trước·discuss
The shift from an engineer-led corporation to an MBA-led corporation has brought Boeing close to the brink of collapse.
boshomi
·7 tháng trước·discuss
504 Gateway Time-out 'The server didn't respond in time.

(from central Europe)
boshomi
·8 tháng trước·discuss
… Key Generation and Joins
boshomi
·8 tháng trước·discuss
... watching TV and eating tofu from Argentina
boshomi
·8 tháng trước·discuss
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
boshomi
·8 tháng trước·discuss
> »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
boshomi
·8 tháng trước·discuss
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
boshomi
·8 tháng trước·discuss
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.
boshomi
·8 tháng trước·discuss
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.
boshomi
·9 tháng trước·discuss
>“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
boshomi
·10 tháng trước·discuss
You should never blindly trust Excel when using CSV files. Try this csv file:

    COL1,COL2,COL3 
    5,"+A2&C1","+A2*8&B1"
boshomi
·năm ngoái·discuss
* PostgreSQL 18 introduces an asynchronous I/O (AIO) subsystem. : https://news.ycombinator.com/item?id=43916577

* PostgreSQL 18 now supports parallel builds for GIN indexes, which are commonly used for search over JSON and full-text data.

* Full list: https://www.postgresql.org/docs/18/release-18.html