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How to Change a 120V Primary-12V Secondary Transformer to a 24V Secondary
Category : Hobbies, Games & Toys
A step-down transformer is used to reduce the output voltage of an AC signal without changing the total power of that signal. Step-down transformers are rated according to either the turns ratio between the transformer primary and secondary (such as a "2:1 transformer"), or they are rated for both input and output voltage (such as a "120V/12V transformer"). If you require 24 volts of electrical p

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(SECONDARY INDEXING in hbase ) how to insert the data in secondary column table in hbase ? Hbase coprocessor hook preput()
Category : Programming Languages

Hey am new to coprocessor . can any one help me to to undesrstand the coprocessor work flow .? what i have done as of now is , wrote one map-reduce code top inserting the data to some table say new_10 and i wrote the code for loading coprocessor with table descriptor(see below ).


public cl

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What Are Secondary Schools?
Category : Education
Secondary schools are schools dedicated to the education of students beyond the primary, or elementary, grades and prior to college. In the United States and in many other countries, secondary schools are referred to as high schools, although the ages and grades of students in these schools sometimes vary. Grade LevelsSecondary schools generally provide education to children from ages 14 to 18

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Symptoms of Secondary AML
Category : Health
Secondary acute myelogenous leukemia, or AML, is a cancer of the white blood cell line, specifically immature cells developing in bone marrow . It occurs secondary to exposure to certain chemicals or diseases. The classification of "acute" refers to the rapid nature of the manifestation and progression of the condition. A myelogenous leukemia affects a particular type of cell; the myeloids, whic

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The Top 10 Secondary Schools
Category : Education
Which American high schools are the best? There are so many criteria by which to judge secondary schools--graduation rate, average ACT or SAT scores, and so on. But every year, two major news publications, U.S. News and World Report, and Newsweek, publish lists of the top 100 high schools, based on indexes they've developed. In 2010, 10 excellent secondary schools made it to the top of one or both

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Secondary PE Activities
Category : Education
Physical Education (PE) is a valuable class where children can learn through physical activity and exercise. Physical activity is vital for children of all ages, including secondary school kids which are generally from sixth to eighth grade. This age group can be especially challenging, but activities and games that get kids moving are fun for the teacher and the students. DodgeballGet the enti

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Art Secondary Schools
Category : Education
Art secondary schools provide a structured environment for serious students of art at the pre-college level. These schools tap into the many skills and abilities that art students bring into the classroom and build on them in a way that helps these kids develop other skills like reading and math aptitudes. A number of different types of art secondary schools exist, allowing students to select the

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What Is a Secondary Genocide?
Category : Culture & Society
A secondary genocide differs from a primary genocide in that the means used to eradicate the persecuted people are indirect and non-violent, and usually political, social and economic. Secondary genocides often take place over generations, with minimal bloodshed, and can be difficult to differentiate from broader political, social and economic trends. Some suggested contemporary secondary genocide

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How to Set a Drive as a Secondary
Category : Computers
Years ago, in order for additional hard drives to be installed, they had to be manually set as secondary using physical jumpers. Nowadays, however, the process for installing and setting a drive as secondary is quite a bit easier. Once you have a secondary drive installed to your computer, simply use the Disk Management utility that Microsoft includes with its operating systems to partition and fo

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TAGS : Drive Secondary

datamapper secondary key
Category : Programming Languages

I am using datamapper in a ruby application and I'm facing a problem I do not understand.


I have a Appartment model and a Location model. An appartment is at a given location and several appartments can be at the same location. This typically described a 1-n relationship (I guess :-) )


My feeeling is that in the Appartement sql table I need a location_id but I do not wan


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