wholesale golf clubs Mercury is at its highest.

Naked eye astronomy in December

Myth: astronomy is an expensive hobby that requires telescopes in order to have a good time. Fact: with just your two eyes, there can be plenty to enjoy in the night sky, provided you know what to look for. So, what follows is a list of astronomical goings on for December, all of which are naked eye.

Note: sunrise/set times are for the Cleveland area, namely 41 degrees North latitude. For anyone reading this who lives at a vastly different latitude, say 10 degrees above or below 40N, your sunrise/set times will be very different.

December 22: Today is the Winter Solstice, the shortest day of the year,
wholesale golf clubs, a thin crescent Moon,
Buy UK DVD, Antares, and Mercury meet up in the predawn sky, Ursid Meteors peak, Mercury is at its highest.

December 23: A near Old Moon is just to the left of Antares, below Mercury just before dawn. Grab the binoculars.

December 24: Third Quarter Moon

December 25: thin Crescent Moon meets Venus,
cheap golf clubs, scenario (with easier Moon) repeats tomorrow

December 29: The Sun rises at 7:54am, its latest rise of the year.

Late Month: The longest nights are here, which makes for a great time to see a star twice in a night.

Now for viewing. The Cleveland area weather forecast is always looking very iffy for this time of year. So, for an even more up to date,
http://www.derbyjuggling.co.uk/, hour by hour weather forecast,
http://www.changesbristol.co.uk/, check out the Cleveland Clear Sky Clock to see what the night will bring. Live somewhere else? Find a clock near you.

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Private Browsing Modes in Firefox and Chrome

If we dont want to save the browsing history, search history, download history, web form history, cookies, or temporary internet files,we have an option called private browsing. This option is available in various browsers. This will be helpful when we browse from public computers. The shortcuts for entering into private browsing mode of various browsers are shown below.

Google Chrome

In google chrome, private browsing can be achieved by pressing the key combination Ctrl+shift+N.
By pressing this private browsing window will be opened.

Mozilla Firefox

In firefox, private browsing can be achieved by pressing the key combination Ctrl+shift+P.
By pressing this, private browsing window will be opened.

Sorting Algorithms using Java

Last day I thought about the different ways for sorting. Previously I was familiar with only two methods of sorting. When I searched in Wikipedia, I found several sorting algorithms. Here I am implementing some of the sorting algorithms the using Java.

1)      Selection sorting

2)      Bubble sorting

3)      Insertion sorting

4)      Merge sorting

5)      Quick sorting

6)      Shell sorting


Selection Sorting

a)    the sublist of items already sorted, which is built up from left to right

b)    the sublist of items remaining to be sorted that occupy the rest of the list.

Initially the  sorted sublist is empty and the unsorted sublist is the entire input list. The algorithm proceeds by finding the smallest (or largest, depending on sorting order) element in the unsorted sublist, exchanging it with the leftmost unsorted element (putting it in sorted order), and moving the sublist boundaries one element to the right. The sample java code is given below.

Bubble Sorting

Bubble sort is a simple sorting algorithm that works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted. The algorithm gets its name from the way smaller elements “bubble” to the top of the list. Because it only uses comparisons to operate on elements, it is a comparison sort. Although the algorithm is simple, most of the other sorting algorithms are more efficient for large lists. The sample code using java is given below.

Insertion Sorting

Insertion sort is a simple sorting algorithm that builds the final sorted array (or list) one item at a time. It is much less efficient on large lists. In this method we take one element and compares it with the rest of the elements in the list and fits into the position between the elements larger than and smaller than the actual element. Finally we will get a sorted list. Sample java code is given below.

Twitter opensourced summingbird under Github

Summingbird is a library that lets you write streaming MapReduce programs that look like native Scala or Java collection transformations and execute them on a number of well-known distributed MapReduce platforms like Storm and Scalding.
The main feature of summingbird is that you can execute the Summingbird program in:

  • batch mode (using Scalding on Hadoop)
  • real-time mode (using Storm)
  • hybrid batch/real-time mode (offers attractive fault-tolerance properties)

For more details please check Summingbird


Google Chrome Browser Shortcuts

A lot of shortcuts are available in google chrome browser. Most of us are unaware of these shortcuts.

Alt+F – Open the wrench menu (i.e chrome settings menu)
Ctrl+J – Go to downloads window
Ctrl+H – Go to history window
Ctrl+Tab – Navigate Tabs
Alt+Home – Go to home page
Ctrl+U – View source code of the current page
Ctrl+K – To search quickly in the address bar
Ctrl+L – Highlights the URL in the address bar (use this to copy/paste the URL quickly)
Ctrl+N – Open a new Chrome browser window
Ctrl+Shift+N – Open a new incognito window (for private browsing)
Ctrl+Shift+B – Toggle bookmark display
Ctrl+W – Close the current Tab
Alt+Left Arrow – Go to the previous page from your history
Alt+Right Arrow – Go to the next page from your history
Space bar – Scroll down the current web page