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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...
How I learned Neurosciences... with Björn Holmgren and Ruth Urbá.
Since my arrival at the Department of Neurosciences I noticed that the branch of Neuro Biochemistry was, as I say, very well represented by the brilliant Swedish researcher Björn Holmgren and his wife, the talented Chilean Ruth Urbá.In almost home-like conditions, since in fact we were working in what was known at the time as "The Laboratory House", they carried out intense research using mice as an experimental basis, and their contributions to the study of sleep and its physiolog...
Spreadsheets are limited because... and serious errors can occur.
It is known to all that the use of Spreadsheets, such as the current Excel, since the beginning when VisiCalc appeared in 1979, have allowed many users without programming knowledge to be able to develop many and varied applications.In particular, the world of economics has been empowered by Spreadsheets. An accountant can directly carry out all or almost all of his work using them, since from the beginning they were conceived with a varied communication with other data processing...
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...
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...
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...
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...
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Do you want to stop Windows 10 updates?
As it will have happened to all of you that for years Microsoft has imposed its Windows 10 updates above any personal or business consideration of those who have bought its product.And let's not say that they are only critical and security updates, along the way it has already imposed more than five versions of Windows 10 associated with the "continuous update" system that they implemented as a universal solution to the problems of Windows 10 itself.Well, along the way there have b...
Spreadsheets. The best visual programming language.
The history of Spreadsheets is fascinating, from Richard Mattessich who in 1972 wrote the article "Budgeting Models and System Simulation" creating the concept, to Pardo and Landau, who tried to obtain a Patent.But the renowned inventor of Spreadsheets is Dan Bricklin, with his VisiCalc, which was available since 1979 and was, let's say, the first and most important computing tool in the hands of anyone when it was implemented for the first computer that we can call "personal".I kn...
The first motorcycle races and businesses in Cuba (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 bi...
Cats on MEDICID-1
One of the most fantastic things about having a computer in our department in the 70's is that we could do with it what we wanted, literally, without having to go through all the bureaucracy created around the so-called "Calculation Centers", where weeks and even months passed between having an idea and getting a real program to implement it. In other words, we lived through the personal computer revolution years before it even existed.In those years a young researcher, the current...
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...
Who am I and what I have programmed
Hi !. I am Octavio, and as editor of this section I offer to share your experiences in programming, from curious anecdotes to difficult moments when making large or small systems. We will also share how to solve all kinds of problems using programming as a tool, for PCs, for Mobiles, and even for the Cloud. If you are a novice, then welcome, and if you are an expert, then welcome too. All kinds of writings will be interesting to us to publish, because where else will you find tha...
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...
Technology plus Ideas.
Technology plus Ideas. In this section we intend to comment on technology applied or applicable in the future, as well as presenting ideas on various technological topics. You can add content by yourself if you register and request it to us at info@havanatrends.com Any technological comment is welcome. Any technological idea is welcome. This section contains technological topics from the past as well as ideas for the future. We look forward to your collaboration. Octavio Bae...
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...
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...
To Manchita
I had the joy of meeting Manchita. I had never had dogs, as a child only a cat. Manchita came to us by chance. A friend of my daughter found her alone on the street, and despite the fact that for several days she made her visible in front of her house, no one claimed her. Well, my daughter stayed with her. At first I was little at home, spending time with my daughter, either in ballet classes or in her apartment. Later on, my daughter is hired abroad, and leaves us looking after...
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...
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