Why do not you get an estimation for the value of π?
The only thing you should do is to draw parallel straight lines on the sheet of paper with the distance of the length of the needle you have. Then you have to drop the needle on the sheet. With some simplification let’s separate the outcome depending on the case when the dropped needle crosses or does not touch any line you just drew. If you repeat this experiment by a couple of thousand times then you have to calculate the ratio of outcomes with crossing a line against the total number of trials. This will your estimation for π.
This approach was originally proposed by Georges-Louis Leclerc, Comte de Buffon in the 18th century. This is probably the most famous demonstration of application of geometry in managing of probability theory (or statistics).
Anyway, you have to spend some with this to get close to the actual accuracy to the current existing estimation (which is calculated today up to 12.1 trillion digits by Alexander J. Yee and Shigeru Kondo – according to their update on Number of digits of pi). (If you do not use trillions every day: the actual value of π contains 10^12 digits!!!)
As it is described by Wikipedia that this experimental design is absolutely suitable to commit the so called confirmation bias, a
“a tendency to search for, interpret, favour and recall information in a way that confirms one’s pre-existing beliefs or hypotheses, while giving disproportionately less consideration to alternative possibilities.”
Lazzarini, an Italian mathematician performed Buffon’s needle experiment with tossing a needle 3408 times and achieving the already “famous” approximation of 355/113 for π. He artificially set-up such an environment where he could expect 113*n/213 as the estimation (n denotes the length of the trial, that is the number of needle drops). He had to repeat the whole experiment only 16 times to reproduce the magic 355/113. However, it is important to note, that Lazzarini did not do anything wrong or unethically. He committed a bias – he was imprudent in some measure – but to avoid confirmation bias is a real challenge for majority of the researchers.
If you are interested in this experiment, you can check this with the help of easy-to-access tools, like Java applets or Flash. Probably the nicest solution can be found at http://www.ventrella.com/buffon/ (by Jeffrey Ventrella), while a simpler, but still very impressive solution can be found at http://www.metablake.com/pi.swf .
Quality and quality assurance is an ever present requirement in today’s world. In the field of programming, the management of code quality is a key issue in larger project, especially in cases where several programmers work on a project. Each programmer brings his or her own knowledge to the project, including their own coding style and solutions. While this can be a good concept locally, the whole project can become confusing and unmaintainable.
Luckily this is not a new issue and several solutions have been created for it. Static analysis tools is a collection of such solutions. They include standardization of coding and error detection.
For the list of static analysis tools for PHP, visit the following page: https://github.com/exakat/php-
With technology always advancing and the automation all types of routine jobs, there’s never been a better time to learn to code and pick up some specialist skills. The demand for these skills has never been higher, and what’s more, you can master them from the comfort of your own home.
In this article, we’ll be discussing some free and premium resources to help you get started with learning for starters and more skilled coders also. Most of the following resources will cover wider areas, which adds even more to our value.
My favourite website to read articles on is: SitePoint
SitePoint shares articles very frequently, has various tutorials for both beginners and experts. The articles are all free to read, but SitePoint has premium content also called SitePoint Premium, with video tutorials and top-quality books to learn from.
Next is: Tuts+
As part of Envato’s creative ecosystem, Envato Tuts+ contributes to the mission of “helping people learn and earn online”.
Envato Tuts+ tutorials are available to you completely free—all 23,360 of them!. Based around specific projects, they include step-by-step written instructions and screenshots to help you practice and master the skills needed to create a practical outcome.
Standards for developing flexible, durable, and sustainable HTML and CSS. Really handy basics that should be followed, written based on years of experience.
High-level advice and guidelines for writing sane, manageable, scalable CSS. Harry Roberts is a CSS specialist, who does lots of presentations in conferences, worked with well known companies such as Adobe, Google. This guideline is a bit more advanced, but will truely be a turning factor in your CSS writing.
More advanced: Sass guideline by Hugo Girauduel
Sass is an extension of CSS that adds power and elegance to the basic language. Sass’ ultimate objective is to fix CSS’ flaws. CSS, as we all know, is not the best language in the world . While very simple to learn, it can quickly get quite messy, especially on large projects. This is where Sass comes in, as a meta-language, to improve CSS’ syntax in order to provide extra features and handy tools. Meanwhile, Sass wants to be conservative regarding the CSS language.
Starting with: Treehouse
Learn from over 1000 videos created by expert teachers on web design, coding, business, and much more. Their library is continually refreshed with the latest on web technology so you’ll never fall behind. They have free trial for two weaks, after that it costs 25 $ / month.
Two more I like: Codecourse & Codecademy
Codecademy provides a wider area of knowledge. They extend their video courses with useful resources for developers such as: version controlling with Git, command line tutorials, more advances topics like Sass & AngularJS. They have many free to watch tutorials, and some premium content for 20 $ / month. I would recommend their free tutorials for starters since it’s really well organised and makes the user follow up a real life example.
Codecourse gives more attention to framework specific tutorials, I would recommend their free courses for coders who have already mastered the basics.
Final personal favourite one: Laracasts
Learning to code positively affects all areas of your life and gives you a newfound sense of energy to really pursue the goals you want in life.
A lot of people think that this positive impact is limited to improving your technological skills and ability to use a computer, but it’s so much more than that. It changes your whole life, from lifestyle, through social life, to career. Wish all of you starters good luck!
Chris Anderson wrote the following interesting article about why your company needs an ISO 9001 certification:
When we talk about helping companies obtain ISO 9001:2015 certification, people often ask us, “Why does our company need to be ISO 9001 certified?” Good question. ISO 9001 is the quality management system (QMS) standard and it produces numerous benefits for any company willing to go that route. So, why should your organization obtain ISO 9001 certification?
ISO 9001 Certification
Becoming ISO 9001 certified means to pass a physical ISO 9001:2015 certification audit by a registrar (a certifying agency).
What Can You Do With This Certification?
You can use the fact that your company is ISO 9001:2015 certified in your marketing. Your management system and its processes have been certified to ISO 9001 so you do want to talk about your successful registration to ISO 9001 just as long as you do not suggest that your products are certified or that you are certified by ISO, which is what ISO certified implies.
What can’t you do?
- You can’t use or modify ISO’s logo…it is ISO’s brand and intellectual property.
- You can’t say ISO 9001 or ISO certified…You must spell it out. We are ISO 9001:2013 certified; we are not certified by ISO or by ISO 9001.
- ISO 9001:2015 cannot be listed on your products or used in literature to imply product certification…It’s not a product certification it’s a company certification.
- You must be careful with your scope description so it properly depicts your certified activities and geographic locations. For Bizmanualz it includes our manual products, training and consulting services from our St. Louis location.
To learn more about improving your processes, attend the latest Internal Auditor Class coming to our St. Louis, Missouri, lean ISO consulting offices. Download Free Sample ISO Procedure Templates to see how easy it is to use MW Word Templates to build your ISO Quality Management System.
The 10 reasons the article covers are the following:
Meet Customer Requirements
Get More Revenue and Business from New Customers
Improve Company and Product Quality
Increase Customer Satisfaction with your Products
Describe, Understand, and Communicate Your Company Processes
Develop a Professional Culture and Better Employee Morale
Improve the Consistency of Your Operations
Focus Management and Employees
Improve Efficiency, Reduce Waste, and Save Money
Achieve International Quality Recognition
See the original article here: Bizmanuals