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This website is owned and operated by HavanaTrends. These Terms establish the terms and conditions under which you can use our website and services offered by us. This website offers visitors readings on how to solve problems by programming, real or fictional stories, link shortcuts for various interests, design, hosting, and programming services for websites and Android APKs, useful documents, as well as articles in our Store. By accessing or using the website of our service, you...
The welcome that Dr. Thalia Harmony gave me.
Back in the year 1973-74 I have already told how Dr. Pedro Valdés took me to know the work of the Department of Neurosciences.I immediately met Dr. Thalía Harmony, one of the most intelligent and determined people I have ever met in my entire life, and knowing that I was about to finish the second year of Pure Mathematics, She knew that I had no biological training.I will never forget that he looked at me with those "inquisitive eyes" that he has and told me: "To work here you must...
Pedro Valdés from Neuro found me... and I was looking for the same thing!
I will tell how I started working in the Department of Neurophysiology of the National Center for Scientific Research. It was the year 1971 and I was studying Pure Mathematics at the University and it turns out that a doctor, Dr. Pedro Valdés Sosa, better known as "Peter", also began to study Mathematics as a second career. Peter and I were together for almost two years, we became good friends, we even studied together. Peter was already a worker with many obligations, he skippe...
Spreadsheets as a universal programming model.
Any two-dimensional screen can be viewed as a collection of rectangular cells. A point and even the entire screen can be defined as such.Almost all cell phones and computer screens are two-dimensional screens.Therefore, anything that runs on mobile phones or PCs or Macs is viewed on a two-dimensional screen as a collection of rectangular cells.In conclusion, anything that runs on mobile phones or PC or Mac can be conceived as a spreadsheet both practically and theoretically.Spreads...
FORTRAN. The best for calculus.
It was the 70's and I continued working as a programmer for the Neuroscience Department using the laboratory computer, which in other articles I have explained that it only had 32 Kilo Words of 12 bits each, a typewriter that could punch 8-bit paper tapes. channels (bits), and an 8-channel paper tape reader.I have also commented that I programmed coding "by hand", and as soon as it was available in the machine language assembler, and also in the LEAL language, which was "postfix".T...
Microsoft Access as a database is limited by design and what to do.
As the title indicates, the microsoft office database product, Microsoft Access, is limited by the company itself so that it does not compete with other products such as SQL Server and C# program development, for example.I explain:The first limitation is the commercial one. Access is not sold alone, but as part of Microsoft Office and therefore an application made in Access cannot be distributed without first verifying that the customer has a valid license of the same Office as suc...
With Variables everything, without Variables nothing.
I have said on many occasions and in various audiences that what we call variables in Programming is what frontally separates Mathematics and its language from Programming and the problems it solves.It is that it is well known that a mathematical variable is like a being without a name, which can be called X, Y, or Z interchangeably and the meaning of the mathematical formulas where it appears does not change. Also the mathematical variable is like a being without its own personali...
THE MOTORCYCLES OF INDEPENDENCE (1885-1940)
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The articles presented in this space are the authorship of Onelio García Pérez and his friends, © www.HobbiesEnRed.com, based on empirical research, there have been few investigated periods as a result of addressing issues that go beyond the particular objectives of the Author. The historical approach present in the fascicles is the product of the limited bibliography available...
Real and Fiction Story Telling
You can write, we know. And so do we... You can write, we know. Do you think the influencers knew that by recording videos they were going to have millions of followers? Well, no, they did not know, but each and every one of the audiovisual influencers have been and are sincere in doing what they do, for different variants that exist. Well, writing is easier than making videos, even if it doesn't seem like it, just because it's visually anonymous, which I believe is very importa...
FOCAL. Salcedo the Great.
It was the early 70s of the last century, and in our PDP-8 compatible minicomputer from Digital Equipment Corporation (DEC) there was almost no way to program except by hand-coding machine language. Later, the Central Institute for Digital Research (ICID) developed the assembler and later the LEAL language (LEnguaje ALgoritmico) that I have referred to in other articles and in which it was quite difficult and tedious to program as it was postfix notation, especially when evaluating...
In Honor of Roberto
It was in the early 80's of the last century when a psychologist named Roberto began to work with us, a very affable man, always with a smile, I never saw him annoying, much less bothering anyone. He was welcome in our Neurosciences collective, although he actually belonged to the psychology school of the university. He immediately became interested in using the personal computers we had to design and create applications that would have an impact on psychology. We talked a lot, he...
I met Ileana and for a moment I was Don Quixote.
Under Rocinante's helmets I made the happiest quixot of my life.It was the 80s of the last century, and my friend Peter and I, being at a scientific event at the University, we read on a flyer that in "El Bodegón de Bartolo", a nearby coffee bar, from 10 AM it could be consumed with beer At an open bar and we couldn't hold out, we went out there with Peter's girlfriend, Yanai.When we get to the bar they inform us that no, that there is nothing at all until 5 pm, and then Yanai tell...
Spreadsheets as a universal computing model.
Any two-dimensional screen can be viewed as a collection of rectangular cells. A point and even the entire screen can be defined as such. Almost all cell phones and computer screens are two-dimensional screens. And some may be three-dimensional. Therefore anything that runs on mobiles or PCs or MACs is seen on a two-dimensional screen as a collection of rectangular cells, or three-dimensional as rectangular cubes. In conclusion, anything that runs on mobiles or PCs or MACs can b...
To Galita
Galita's life cycle is over, a cute little dog that my daughter Lissi picked up from the street and who gave us a lot of love and happiness.Galita was very naughty. Being at home made Dolly, another bigger dog, dump the garbage can so that she would then be the one digging for food. And that we gave her a lot of food and other things that she liked. But it seems that her nomadic life led her to try to store as much food as she could find.Galita got along with everyone. She was very sociable. I d...
Varied content with interesting or necessary documents for reading or entertainment.
In this section of documents you will find a wide variety of content, both HavanaTrends own documents and documents from other authors, as well as documents that you wish to share with our Internet users. All (or almost all, see our Privacy Policy) content is welcome. The document can be practically in any digital format, be it PDF, HTML, TXT, DOCX, etc. We look forward to your collaboration by registering and writing to info@havanatrends.com requesting to be an author. Octavio...
How I met Dr. Mitchell Valdés.
In other articles I have commented that in 1972 I was studying Pure Mathematics and I  coincide with Dr. Pedro Valdés (Peter, as everyone knows him) that he was continuing his studies in Mathematics to increase his working capacities in Neurosciences.We became good friends, we studied together in the University Park, in the Classrooms, in the Library, until one day he told me: "Tomorrow, Saturday, I'll wait for you at my house to continue."Saturday comes, I go to Peter's house, I r...
CONCATISO. My first Program. Second part.
CONCATISO. My first Program. Second part. By reading the first part you will already have an idea of the computational equipment that the Department of Neurophysiology had back in the years 1972... 1973 Now I will tell the other part: Professor Erwin Roy John, head of the Department of Neurophysiology at New York Medical College, donated to Thalía and her Department an analog "Transient Averaging" computer called "CAT" that was capable of obtaining, from synchronized stimuli an...
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Antiviral treatment for dengue AIDS and others via genome sonification, applied by bone conduction.
https://sonictreatment.havanatrends.com/  It is important not to listen to the audios but to put large headphones behind your ears in order to apply this antiviral treatment via bone conduction. Summary: Antiviral treatments can be made using the audio generated from an encoding of the entire genome of various viruses, an encoding that creates a numerical series that can be sonified . The generated audio files are attached or you can download them using the listed links. It is very important t...
The MEDICID-1. The great little equipment.
It was 1974 and an Engineer from the Department of Neurophysiology named Alberto Caro had designed a device for the experimental work of the department that could be controlled by our CID-201-B computer, compatible with the PDP-8, which I referred to in the article "CONCATISO. My first program.".Due to production priorities, the Central Institute for Digital Research (ICID) did not give us what would later be named as MEDICID-2 and for that reason, with great inventiveness, the eng...
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