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scipastips.bsky.social
Scientific Pascal
@scipastips.bsky.social
110 followers 93 following 80 posts
Applications of the #Pascal #programming language in #science, #research, #medicine and #technology. Semi-automated & curated by J. W. Dietrich (@drjwdietrich.bsky.social)
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scipastips.bsky.social
The whitefly, Bemisia tabaci, threatens agricultural productivity via crop damage and virus transmission. A novel individual-based model, implemented in #Embarcadero #Delphi, predicts population dynamics and helps to optimise control strategies.

#Pascal #programming

doi.org/10.1021/acs....
Silverleaf whitefly on a green surface. Source: https://commons.wikimedia.org/wiki/File:Silverleaf_whitefly.jpg Graphical abstract from the paper. Abstract: The whitefly, Bemisia tabaci, significantly threatens agricultural productivity through crop damage and virus transmission. This study developed and parametrized a dynamic energy budget theory-based toxicokinetic-toxicodynamic (TKTD) model to assess the mortality of immature whitefly stages and the impacts of spidoxamat exposure on fecundity and fertility in adults. The TKTD model was integrated into an individual-based model (IBM) to predict population dynamics and efficacy under field conditions, validated with field trial data from different locations in India, Pakistan, and Brazil. The integrated model identified optimal application strategies across varying pest pressure and temperature regimes. The IBM simulation results indicate that a second application can substantially enhance population control, particularly when timed between 7 and 14 days postinitial treatment, depending on ambient temperature and population structure. This timing is influenced by the efficacy half-life and the developmental duration of immature stages, emphasizing the importance of precise application strategies in managing B. tabaci populations effectively. The findings underscore the importance of integrating empirical data with modeling for a mechanistic understanding of effects and the development of effective pest management strategies in the face of evolving agricultural challenges. Figure from the paper: Model validation with the field data. Nymph count and efficacy quantified in Field Trial 2. Dots are measured data (means and standard deviation for counts, and efficacy based on mean counts) while the lines and gray shades represent the median and 95% prediction intervals of 100 Monte Carlo simulations.
February 8, 2026 at 8:43 PM
scipastips.bsky.social
Interruptions are common in working life, negatively affecting task performance and long-term psychological well-being. Research supported by software written with #Lazarus_IDE / #Free_Pascal demonstrates the important role of resumption time and individual flexibility.

doi.org/10.1111/ejn....
Figure from the paper: Time-frequency plots per condition, with the baseline corrected oscillatory power measures. The upper four subplots are from a cluster of mid-frontal channels (Fz, F1, F2, FC1, FC2) and the lower five subplots are from a posterior channel cluster (PO3, POz, PO4, O1, Oz, O2). The events (onsets of memory array, interruption, retro-cue, and probe) are marked by vertical dotted lines, and their timing changes depending on condition. Mind that flexible condition subplots have a white shaded area around 4000 ms, which represent the 95% confidence interval range of resumption times on flexible trials (95%CI 3699.4 - 4682.95).
February 8, 2026 at 6:36 PM
scipastips.bsky.social
#AlgoPoint is an application designed to assist teaching high school students in computational thinking. A new model for this software, written with the #Lazarus_IDE and #Free_Pascal enables teacher-student collaboration.

#Pascal #programming

doi.org/10.5220/0013...
Figure from the paper: Command palette during the search of blocks by their contents. Figure from the paper: The main window of the application after the stu- dent joined the test.
February 8, 2026 at 6:23 PM
scipastips.bsky.social
Persons with #depression may have difficulties in filtering out irrelevant information. This hypothesis could be proved with a computerised experiment based on software written with the #Lazarus_IDE for #Free_Pascal.

doi.org/10.3390/app1...
Graphical Abstract. As a replacement subsequently follows the abstract: (1) Background: Individuals with high levels of state depression are hypothesized to have an impairment of attentional control functions necessary for filtering irrelevant information. This study used the event-related potential of early PD, a marker of distractor suppression, and N2pc, an indicator of attentional capture to investigate whether high state depression affects selective attention in ignoring or suppressing distractors. (2) Methods: Thirty-three undergraduate students completed the Depression Anxiety Stress Scale-21 (DASS-21) and performed a modified, delayed match-to-sample task. Participants encoded abstract shapes under low or high perceptual load conditions in the visual working memory while ignoring a lateralized Chinese character as a task-irrelevant singleton distractor. (3) Results: Individuals with high state depression failed to suppress the distractor, as evidenced by the absence of early PD. Under low perceptual loads, they also displayed a significant N2pc component, indicating attentional allocation to the distractor. In contrast, low-state-depression participants successfully suppressed the distractor, showing early PD and the absence of N2pc. (4) Conclusions: These findings suggest that high-state-depression individuals have an impairment in top–down attentional control, particularly in feature-based selective attention. This deficit hinders the ability to filter out irrelevant information, potentially contributing to cognitive difficulties associated with depression. Participants received visual instructions for the delayed match-to-sample task while listening to a pre-recorded audio file in MP3 format containing the instructions delivered by an AI voice.
February 8, 2026 at 5:44 PM
scipastips.bsky.social
A Hill Cypher modulo 95 #cryptography method generates a matrix-based key with a quantifiable randomisation algorithm. In a recent paper, the use of random matrices is implemented in an app written in #Object_Pascal with the #Lazarus_IDE.

doi.org/10.26554/int...
Examples for key matrices. Demo app implementing an Encryption and Decryption Application Interface using the Hill Cipher Algorithm, written with Lazarus and Free Pascal.
February 8, 2026 at 5:27 PM
scipastips.bsky.social
Water may contain dissolved substances that impact its quality and may be harmful. To better understand the processes of purification, an international team developed a mathematical model of impurity diffusion and #simulation software using the #Lazarus_IDE and #Free_Pascal.

doi.org/10.1038/s415...
Figure from the paper: Two-dimenstional plot showing zones of saturation/nonsaturation of the skeleton surface by impurity particles that are formed for different values of the filter thickness at v= 4.5. Quadruple integrals representing boundary value problems of convective diffusion under conditions of limited sorption. Figure from the paper: Scheme for calculating the quadruple integral (double quadrature method).
February 8, 2026 at 3:58 PM
Reposted by Scientific Pascal
peazip.bsky.social
PeaZip 10.9.0 is ready!
The new release introduces QOL updates to improve user experience: new context menus and kb shortcuts, improved reactivity, speed, internal drag&drop, handling of rar and multi volume archives, Image and Text viewers.
Full change log: peazip.github.io/changelog.html
February 7, 2026 at 8:32 AM
scipastips.bsky.social
In working life, interruptions are widespread and can impair task performance. In an #EEG experiment that was controlled by software written in #Lazarus and #Free_Pascal, researchers found that temporal flexibility can benefit subgroups of workers.

#Pascal #programming

dx.doi.org/10.1037/pag0...
Figure from the paper showing the experimental paradigm. Shortly, participants were asked to memorize the orientation of coloured bars before being presented with an arithmetic task. Figure from the paper: Time–frequency plots per interruption condition averaged across midfrontal EEG channels. Plot from the paper: Significant clusters showing the main effects of interruption averaged across duration conditions with the topographies marking the distribution of two significant clusters over the scalp. The vertical dashed lines indicate the onsets of the retro-cue (0 ms) and the memory probe (1,000 ms).
February 7, 2026 at 9:56 AM
Reposted by Scientific Pascal
castle-engine.io
macOS improvements: work flawlessly on Apple Silicon (Aarch64), bundled with FPC, signed and notarized; Cocoa mouse positioning; fixes to OnDropFiles; universal binary support

We are proud to announce numerous improvements to how our engine works on macOS: As hinted in previous news, our macOS…
macOS improvements: work flawlessly on Apple Silicon (Aarch64), bundled with FPC, signed and notarized; Cocoa mouse positioning; fixes to OnDropFiles; universal binary support
We are proud to announce numerous improvements to how our engine works on macOS: As hinted in previous news, our macOS builds are now provided with "bundled FPC" which means that building your games works out-of-the-box with our engine. Castle Game Engine downloads now feature a native macOS/Silicon (Aarch64) build. With everything working natively on Apple Silicon, including our engine, tools, and bundled FPC.
castle-engine.io
February 2, 2026 at 5:16 AM
Reposted by Scientific Pascal
ndxdev.bsky.social
🚀 NDXSQLite - Professional SQLite for Free Pascal/Lazarus

Thread-safe, SQLCipher encryption, connection pooling, schema migrations, TDataSet compatible.

159 examples included. Cross-platform (Linux/Windows/macOS).

github.com/NDXDeveloper...
January 26, 2026 at 1:10 PM
Reposted by Scientific Pascal
ndxdev.bsky.social
DCPcrypt v2.0.5 — Cryptographic library for Free Pascal/Lazarus

◆ 20 ciphers (AES, Blowfish, Twofish, DES, RC4...)
◆ 10 hashes (SHA-256, SHA-512, MD5, Tiger...)
◆ 6 block modes, stream encryption, Base64
◆ Pure Pascal, no dependencies
◆ 282 tests, full docs

github.com/NDXDeveloper/dcpcrypt-lazarus
January 31, 2026 at 7:14 PM
scipastips.bsky.social
#SimulAdren is a simulation program for the #hypothalamus - #pituitary - #adrenal feedback control, an essential physiological motif. It is written in #Object_Pascal and helps to understand life-threatening diseases.
cyberunitsteam.bsky.social CyberUnits Team @cyberunitsteam.bsky.social · 15d
#Simuladren, a simulator for the #HPA axis based on #CyberUnits Bricks, has been updated to version 1.2. This upgrade introduces support for XML files according to #MIASE and #MIRIAM guidelines and high-res displays on Windows.

simuladren.sourceforge.io
doi.org/10.5281/zeno...
Screenshot of SimulAdren 1.2 (Emerald) on macOS 13.7 Ventura. Screenshot of SimulAdren 1.2 (Emerald) on Windows 11.
January 27, 2026 at 11:07 PM
scipastips.bsky.social
CyberUnits is a class library for simulating biological feedback control systems and other information processing structures in #Object_Pascal.
cyberunitsteam.bsky.social CyberUnits Team @cyberunitsteam.bsky.social · 16d
#CyberUnits Bricks has been released in version 2.1.0.

This version introduces a proportional-integral (PI) block, scaling for systems diagrams, a solver for algebraic equations, extended ASIA elements, additional demo programs, and bug fixes.

cyberunits.sf.net
doi.org/10.5281/zeno...
CyberUnits Bricks: Screenshot of a demo app for a feedback loop with a dead-time element. CyberUnits Bricks: Screenshot of unit tests for the solver unit.
January 27, 2026 at 10:43 PM
Reposted by Scientific Pascal
castle-engine.io
Engine downloads with "bundled FPC" for all platforms, castle-build-ci to easily use CI with our engine, Woodpecker (Codeberg) CI examples and impressions
Engine downloads with “bundled FPC” for all platforms, castle-build-ci to easily use CI with our engine, Woodpecker (Codeberg) CI examples and impressions
We have a number of news related to using CI (continuous integration) / CD (continuous delivery) with our engine. The idea of CI / CD is that you let some automatic process to be performed on your code, usually each time you make a commit / push to the repository. There are a number of useful things you can do this way (e.g.
castle-engine.io
January 18, 2026 at 10:25 AM
Reposted by Scientific Pascal
peazip.bsky.social
20 years ago, about in this time of the year, I started the journey of PeaZip project.
It has been a long way, teaching me more lessons than the ones learnt to overcome the technical challenges.
The journey has definitely been more important than the destination, I hope we will continue it together.
Screenshot of PeaZip 1.0 (2006)
January 18, 2026 at 10:24 AM
scipastips.bsky.social
youtu.be/uDdTrCjG7PU?...

A Modern #Pascal Book at Last!
by @silvercoder70.bsky.social
A Modern Pascal Book at Last! (Reviewing Object Pascal My Way)
YouTube video by The Silver Pascal Coder
youtu.be
January 17, 2026 at 10:37 AM
Reposted by Scientific Pascal
tinybiggames.com
#gamedev #indiedev #c99 I pushed #tinycc compiler to near limits as a backend. Making it do some cool things it was not designed to do, LOL! Totally virtualized its file io, so resources it loads at runtime come from embedded zip file. Fully open source. See it working in paxlang.org
Pax™ Programming Language
A minimal systems programming language that compiles to native executables via C99.
paxlang.org
January 3, 2026 at 1:02 AM
scipastips.bsky.social
medium.com/gitconnected...
Pascal at More Than Fifty
The unfinished story of a precise language.
medium.com
December 31, 2025 at 8:54 AM
scipastips.bsky.social
The nightly illumination of the Niagara Falls is controlled by software written in #Object_Pascal with #Embarcadero #Delphi.

#Pascal_programming
marvel-b1-cdn.bc0a.com/f00000000142...
delphi.org/2017/04/the-...
www.niagaraparks.com/events/event...
Picture of the illuminated Niagara Falls at night. Seen are the Niagara River in the front, the falls in the center, and the city in the background.
December 28, 2025 at 4:48 PM
scipastips.bsky.social
With immediate effect, Marcu Cantù's acceptance talk at the International Pascal Congress 2023 is available on YouTube.

@marcocantu.bsky.social #IPC2023

youtu.be/skzo7Yj16K8?...
Niklaus Wirth Award - MVC 2023 Acceptance Talk by Marco Cantù
YouTube video by IPC (International Pascal Congress)
youtu.be
December 28, 2025 at 3:52 PM
Reposted by Scientific Pascal
viquipedia.bsky.social
Cartes du Ciel és un programa planetarium lliure.

Considerat un dels millors programes gratuïts d'astronomia, permet consultar la posició d'objectes celestes, la descàrrega d'imatges de la web SKYVIEW, la descàrrega de catàlegs d'estels i el control de telescopis usant ASCOM.
Cartes du ciel - Viquipèdia, l'enciclopèdia lliure
ca.wikipedia.org
November 19, 2025 at 6:35 PM
Reposted by Scientific Pascal
githubprojects.bsky.social
Cross-platform text editor, written in free pascal
December 5, 2025 at 11:30 AM
Reposted by Scientific Pascal
cyberunitsteam.bsky.social
#SimulAdren has been released in version 1.1. This cross-platform simulator of the corticotropic feedback loop (hypothalamus-pituitary-adrenal or #HPA axis) is based on the #CyberUnits Bricks class library.

doi.org/10.5281/zeno...
doi.org/10.5281/zeno...
simuladren.sf.net
Screenshot of SimulAdren 1.1.0 on macOS 13.7.8 Screenshot of SimulAdren 1.1.0 on macOS 13.7.8
December 13, 2025 at 9:34 PM
Reposted by Scientific Pascal
castle-engine.io
November improvements: huge animation upgrade, guidelines about AI usage, Codeberg mirror, various fixes

We have a few things to report from November. Enjoy 🙂 We have merged a big branch with numerous improvements to our animation handling (skinned animation and other). The important new…
November improvements: huge animation upgrade, guidelines about AI usage, Codeberg mirror, various fixes
We have a few things to report from November. Enjoy 🙂 We have merged a big branch with numerous improvements to our animation handling (skinned animation and other). The important new functionality is documented here. This merge features: Skinned animation loaded from glTF is now performed on GPU (mesh is deformed using shaders). This allows such animations to be loaded much faster, take much less memory, and be more efficient at the same time.
castle-engine.io
December 1, 2025 at 7:34 PM
Reposted by Scientific Pascal
microchip-makes.bsky.social
Andrzej Karwowski's AVRPascal project is a Pascal code editor designed for programming AVR® microcontrollers, leveraging the Free Pascal compiler and AVRdude to transfer compiled code to the MCU's memory. The latest version, 3.3, even includes a serial port monitor compatible with Arduino boards.
Pascal? On My Arduino? It’s More Likely Than You Think
The Arduino ecosystem is an amazing learning tool, but even those of us who love it admit that even the simplified C Arduino uses isn’t the ideal teaching language. Those of us who remember l…
hackaday.com
August 28, 2025 at 1:25 PM