Profile

Cover photo
Tzvi Rubin
Attended Open University of Israel
Lives in Dimona, Israel
22 followers|18,577 views
AboutPostsPhotosYouTube

Stream

Tzvi Rubin

Shared publicly  - 
 
Psychology and Human Behavior
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/psychologyprojects.html
Related Story on Yahoo Makers: The #1 Secret Dinner Party Weapon “Handwriting is really a compilation of everything you’ve ever experienced and the way you’ve reacted to it,” says handwriting expert Sheila Lowe, a novelist (the Claudia Rose mysteries series, about a forensic handwriting expert who solves crimes), author of “The Complete Idiot’s Guide to Handwriting Analysis” and president of the American Handwriting Analysis Foundation. “It all ...
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Earth Sciences and Geology
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/earthsciencesprojects.html
1
Tzvi Rubin's profile photoshapaka abraham's profile photo
3 comments
 
some researches are proving that it does have positive effects ,can you please give me some suggestions in connection with researching about  which local materials are good for making  a shuttle or neither a rocket sir?
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Viruses & Bacteria
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/fairprojects/medicine/bacteria.html
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Global Warming
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/fairprojects/environment/globalwarming.html
a summary of global temperatures and precipitation, placing the data into a historical perspective
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
The Invention of Adrenaline (Epinephrine)
Adrenal extracts containing adrenaline were first obtained by Polish physiologist Napoleon Cybulski in 1895.
Japanese chemist Jokichi Takamine and his assistant Keizo Uenaka independently discovered adrenaline in 1900 (Japanese patent No. 4785).
For more information:
http://www.patent-invent.com/adrenaline_patent.html
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
SCIENCE FAIR PROJECT OBJECTIVES:
1. Statistical estimation of the No. of headwords in a dictionary
2. Statistical estimation of the size of your vocabulary
3. The growth of the English language vocabulary over the years

GRADE LEVEL: Elementary / Middle School - Grades 4-9

PROJECT DESCRIPTION:
In order to estimate the No. of entries / headwords in a dictionary, first of all we have to sample the dictionary. The best and simplest way is the systematic sampling method which basically is about selecting sampling elements at regular intervals beginning at a random start.
In our case, we choose randomly a dictionary page and from here on we sampled the dictionary at equal intervals.
For example, if you have sampled 36 pages and you know the meaning of 12 words located first on those pages then the meaning is that your vocabulary size is 12/36 (one third) of the dictionary's vocabulary. If the number of headwords in the dictionary is 30,000 then your vocabulary size is about 10,000.

MORE DETAILS:
http://www.juliantrubin.com/encyclopedia/mathematics/dictionary_statistics.html

IN THE IMAGE BELOW:
My collection of the Oxford Advanced Learner's Dictionary from the first to the eighth edition.
2
Add a comment...
In his circles
2 people
Have him in circles
22 people
Natasha Koroleva's profile photo
Amit Dave's profile photo
Ben Nguyen Phu's profile photo
RAJANI KANTA BOXI's profile photo
‫ליאת מוזס‬‎'s profile photo
Andrew Olson's profile photo
ron rubin's profile photo
Neeraj Vaid's profile photo
Conocimiento Global (Global Knowledge)'s profile photo

Tzvi Rubin

Shared publicly  - 
 
The Display Board For Science Fair Projects
As you know, science fair projects are displayed on display boards.

Take in account that a lot depends on a good display board. If your display board is attractive, the visitors (including the judges) will have good impression about it. However, if your display board is cluttered and in a mess, the readers will get a bad impression about your work and will ignore it, no matter how worthy is your research.

Your display should be a promotional presentation and not a full description of your project. Remember, the judges and readers have only a few minutes at their disposal to get impressed by your project.

A general display board layout follows. There are possible other variations for the organization of your science fair project on the display board.
http://www.juliantrubin.com/fairguide/displayboard.html
For additional information related to doing a science fair project display board (and keeping notes along the way that make the whole process even easier), see the following: Science Fair Project Display Boards · Perfecting the Project Display Board · Get a Jump Start on the Project Display ...
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Biomes, Ecosystems and Habitats
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/fairprojects/ecology/biomeecology.html
The Southwest and central Great Plains will dry out even more than previously thought
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Zoology
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/zoologyprojects.html
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Dogs & Cats
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/fairprojects/zoology/dogscats.html
Pope Francis said 'all of God's creatures' can make it to heaven during his weekly address in St. Peter's Square as he tried to console a distraught young boy mourning the death of his dog.
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Global Warming
Science Fair Projects and Experiments
Topics, Ideas, Resources and Sample Projects by Grade Level
http://www.juliantrubin.com/fairprojects/environment/globalwarming.html
Imagine if the world's two largest polluters unilaterally decide to cut emissions of carbon dioxide, the ubiquitous gas responsible for the bulk of global warming. At ...
1
Add a comment...

Tzvi Rubin

Shared publicly  - 
 
Erna Rubin Online Museum of Photography
Photography and video vintage equipment from the 60s and 70s
http://www.ernarubin.org/family_history/museum_photography.html
In the picture:
The Zorki 4, a 35 mm rangefinder camera, was the most successful Zorki and maybe the best Russian camera ever. It was produced between the years 1956–1973 and based, to some degree, on Leica technology.
Erna Rubin Online Museum of Photography - Photography and video vintage equipment from the 60s and 70s
1
Add a comment...
Story
Introduction

My name is Tzvi Rubin (Julian); born 1954; live in Israel in a little desert town called Dimona (the setting of my first novel).


I have been an avid reader from early age and penned my first novel at the age of twelve in Hebrew.


By profession, I am an electronics and computer technician and those are the position I held in the Israeli army Signal Corps and upon my release, at Bezeq, the Israeli National Telecommunication Company.

I earned my Bachelor’s degree in math and Jewish history at the Open University of Israel and make a living, mainly as an information specialist freelancer and as a math, English and science high school teacher.

I am also very interested in Bible history.


My first juvenile novel, The Orchid Grower, reflects many of my life experiences and interests (children, dogs, sports, science, Internet) . My main goal was to present to the young reader several scientific topics fluently interwoven into an adventure plot in order to encourage science, web and computer literacy among the young. I prefer to write for the pre-puberty age because those youngsters are old enough to understand and young enough not to lose optimism.

Education
  • Open University of Israel
  • Technion, Israel
  • Bezeq Telecommunications College, Jerusalem, Israel
  • Ami Asaf, Elementary School, Dimona, Israel
Basic Information
Gender
Male
Other names
Julian