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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...
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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...
Main Motorcycle Agencies between 1940 and 1950 in Havana
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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 li...
Tapes, Punched Cards, and Machine Time.
It was the 70's and then we only had a 12-bit 32 Kilo Words computer, as I have commented, but the problems that we had to solve, especially statistical ones, needed many more resources.So I took on the task of "circumventing the bureaucracy" of the Computing Centers with their way of working: "submit the program and data on paper" and after days or weeks: "come and collect your results" or "the program did not compile" or "the program failed", which made us fix the problems on pap...
Single link Cluster Analysis and Peter Valdes.
At the beginning of the 70s we had a computer with 32 Kilowords and 12 bits in length each word and to program it encoded the machine language by hand and could also use a posfix notation language called LEAL although it was difficult for us anyway to translate algorithms especially if what prevailed was the calculation, so frequent in the Neuroscience applications that we developed supported by statistics, including multivariate ones.In those years and also in the 60's, it was com...
To be a Programmer... without mathematics?
Programming... There are so many work and development opportunities for the Programmer and the Entrepreneur... Smart houses, the internet of things (IoT), websites as varied as the world is, mobile applications (Android, IOS), Security in communications and in business, PC applications (Windows, Mac, Chrome OS), are some examples of how varied and necessary for Programmers to do their work. Artificial intelligence? And who programs, trains, and maintains it? Programmers first. A...
How I became Section Chief of the Computing Center.
It was the early 70's and as I have commented in other articles, our Neuroscience Department had a 12-bit 32 Kilo Words computer, a punched tape reader and an extended typewriter to punch tapes.In those days, computers were scarce, very scarce, and that meant that their use as such was in the hands of large ministries or large companies, but it was very rare for a small department to have one. The self-sacrificing work of the Department staff that prior to my entry into it and usin...
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...
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...
Repagular Physics.
Octavio Báez Hidalgo Independent Researcher. octaviobh@gmail.com December 01, 2021 Contenido Repagular Physics. 1 We are the Dark Energy and Matter. A paradigm shift. 3 Matter, Energy, Time. 6 Programming. 10 Gravitonium. 13 Dimensions. 17 Time I. 20 Time II. 21 Particles. 22 Waves. 24 Light as base clock and h Planck repagular 3d minimum. 26 We are the Dark Energy and Matter. A paradigm shift. The objective of this research scheme is to establish the practical and theoretical b...
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...
My fellow operators.
{loadmoduleid 135} In other articles I have commented that in the 70s our Neuroscience department had a CID-201-B minicomputer compatible with the PDP-8 of the DEC company and that the CID-201-B had only a typewriter teletype, a perforated paper tape reader, and a paper tape printer.In order to use this equipment, after developing and fine-tuning each program, it was necessary to "punch" the tapes with the data, or, for example, use the CONCATISO program (see article) to convert t...
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...
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...
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...
Classic motors in Cuba 1899-2007
  Amazon puts in your hands the book: Classic motors in Cuba 1899-2007 (Spanish Edition). Launching by Hobbiesenred of the Book: "Classic Motors in Cuba".Dedicated: To the motorcyclists of Latin America, the world and especially to the Cubans.The legend of classic motors in Cuba began on September 3, 1899. Motorcycles continued to penetrate and, from that moment on, riders began to leave their footprints all over the island, thus maintaining their permanence, hegemony and development. This bo...
CONCATISO. My first Program.
CONCATISO. My first Program. Well, first I must tell you where and why the need arose for a program such as CONCATISO, my first professionally speaking program. It was the years 1972... 1973... and the Department of Neurophysiology of the Center for Scientific Research (CENIC), led by Dr. Thalía Harmony, who in passing I will say was my main mentor in my early working years, A CID-201-B digital computer was awarded, manufactured by the then Central Institute for Digital Researc...
Program and fine-tune in assembler binary
It was the years 1973, 1974,...In the article on "CONCATISO my first program" I described in broad strokes the characteristics of the computer CID-201-B compatible with the PDP-8 of the DEC company.Recall that it was 12 bits long, but also only had a 12-bit accumulator register and 1 carry bit.Machine language instructions were encoded in those 12 bits where sometimes another word was used to access groups of 4096 (12 bits) memory words, and thus be able to access all 32 Kilowords...
Basic Ideas
Basic Ideas in the History of Humanity. An idea, a conception, a way of working, of direction, and in general any human activity is considered basic when it has never been formulated by anyone before and is also so simple and powerful that multiple ideas and applications have sprung from it throughout history, but none existed or would exist without having been promoted by that basic idea that is always present in all subsequent development. Often, it's not possible to attribute this basic ide...
How we finish the ANFACT.
Well, I didn't know whether to put this article in "Stories" or if here, in "ProgramSolving", but in the end, due to the randomness of the Programming, I decided to put it here.It was between 1973-1974 and a Programmer from the Center's Department of Mathematics, Raisa Cepero Bonilla, was in charge of carrying out a project to carry out a "Factorial Analysis by Correspondence", which is a fairly sophisticated statistical analysis and not very broad utilization even today.It was pro...
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