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Derivatives | 6 Months Ended | 12 Months Ended
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Jun. 30, 2013 | Dec. 31, 2012
Derivatives [Abstract] |  |
Derivatives | Note 5 – Derivatives The Company has determined that certain warrants the Company has issued contain provisions that protect holders from future issuances of the Company’s common stock at prices below such warrants’ respective exercise prices and these provisions could result in modification of the warrants’ exercise price based on a variable that is not an input to the fair value of a “fixed-for-fixed” option as defined under FASB ASC Topic No. 815 – 40. The warrants granted in connection with the issuance of the Company’s Stock Offering and 2012 Common Stock Offering, the Convertible Notes (previously issued and converted) and the placement agent warrants contain anti-dilution provisions that provide for a reduction in the exercise price of such warrants in the event that future common stock (or securities convertible into or exercisable for common stock) is issued (or becomes contractually issuable) at a price per share (a “Lower Price”) that is less than the exercise price of such warrant at the time. The amount of any such adjustment is determined in accordance with the provisions of the warrant agreement and depends upon the number of shares of common stock issued (or deemed issued) at the Lower Price and the extent to which the Lower Price is less than the exercise price of the warrant at the time. Activities for derivative warrant instruments during the six months ended June 30, 2013 were as follows:
|  | Units |  |  | Fair Value |
Balance, December 31, 2012 |  |  | 5,146,338 |  |  | $ | 3,574,958 |
Reclassification to paid in capital |  |  | (3,122,821 | ) |  |  | (590,217 | )
Change in fair value |  |  | - |  |  |  | (26,764 | )
Balance, June 30, 2013 |  |  | 2,023,517 |  |  | $ | 2,957,977 |
The fair values of the derivative warrants were calculated using a modified binomial valuation model with the following assumptions at June 30, 2013 and December 31, 2012.
|  | December 31, |  |  | June 30, |
|  | 2012 |  |  | 2013 |
Market value of common stock on measurement date (1) |  | $ | 1.17 |  |  | $ | 1.65 |
Adjusted exercise price |  | $ | 0.48 - $0.81 |  |  | $ | 1.50 - $2.475 |
Risk free interest rate (2) |  | $ | 0.10 - $0.77 |  |  |  | 1.05 | %
Warrant lives in years |  | 4 months/5 years |  |  | 4.5 years |
Expected volatility (3) |  |  | 125% - 161 | % |  |  | 154 | %
Expected dividend yield (4) |  |  | - |  |  |  | - |
(1) | The market value of common stock is based on an enterprise valuation.
(2) | The risk-free interest rate was determined by management using the Treasury Bill as of the respective measurement date.
(3) | Because the Company does not have adequate trading history to determine its historical trading volatility, the volatility factor was estimated by management using the historical volatilities of comparable companies in the same industry and region.
(4) | Management determined the dividend yield to be 0% based upon its expectation that it will not pay dividends for the foreseeable future.
| Note 6 – Derivatives The Company has determined that certain warrants the Company has issued contain provisions that protect holders from future issuances of the Company’s common stock at prices below such warrants’ respective exercise prices and these provisions could result in modification of the warrants’ exercise price based on a variable that is not an input to the fair value of a “fixed-for-fixed” option as defined under FASB ASC Topic No. 815 – 40. The warrants granted in connection with the issuance of the Company’s Stock Offering and 2012 Common Stock Offering (See Note 9), the Convertible Notes (See Note 5) and the placement agent warrants contain anti-dilution provisions that provide for a reduction in the exercise price of such warrants in the event that future common stock (or securities convertible into or exercisable for common stock) is issued (or becomes contractually issuable) at a price per share (a “Lower Price”) that is less than the exercise price of such warrant at the time. The amount of any such adjustment is determined in accordance with the provisions of the warrant agreement and depends upon the number of shares of common stock issued (or deemed issued) at the Lower Price and the extent to which the Lower Price is less than the exercise price of the warrant at the time. Activities for derivative warrant instruments during the years ended December 31, 2012 and 2011 were as follows:
|  | Units |  |  | Fair Value |
Balance, December 31, 2010 |  |  | - |  |  | $ | - |
Warrants issued with Convertible Notes (See Note 5) |  |  | 287,061 |  |  |  | 377,150 |
Placement agent warrants related to issuance of Convertible Notes (See Note 5) |  |  | 143,532 |  |  |  | 188,579 |
Warrants issued with Stock Offering (See Note 9) |  |  | 1,972,785 |  |  |  | 2,591,900 |
Placement agent warrants related to issuance of stock (See Note 9) |  |  | 986,393 |  |  |  | 1,295,950 |
Change in fair value |  |  | - |  |  |  | (13,966 | )
Balance, December 31, 2011 |  |  | 3,389,771 |  |  |  | 4,439,613 |
Warrants issued with Stock Offering (See Note 9) |  |  | 242,190 |  |  |  | 318,087 |
Placement agent warrants related to Stock Offering (See Note 9) |  |  | 121,095 |  |  |  | 159,044 |
Warrants issued with 2012 Common Stock Offering-A (See Note 9) |  |  | 3,118,988 |  |  |  | 1,409,554 |
Warrants issued with 2012 Common Stock Offering-B (See Note 9) |  |  | 1,559,505 |  |  |  | 1,665,697 |
Placement agent warrants related to 2012 Common Stock Offering (See Note 9) |  |  | 467,845 |  |  |  | 499,707 |
Transfer from liability classification to equity classification |  |  | (3,753,056 | ) |  |  | (4,231,324 | )
Change in fair value |  |  | - |  |  |  | (685,420 | )
Balance, December 31, 2012 |  |  | 5,146,338 |  |  | $ | 3,574,958 |
On December 19, 2012, as the result of the Share Exchange, it was determined that the floor for resetting the exercise price was met and the exercise price of the certain warrants was set to be $0.26 (before Exchange Ratio adjustment). Therefore, these warrants were considered indexed to the Company’s stock and qualified for the scope exception under FASB ASC 815-10 allowing for a transfer from liability classification to equity classification. The fair values of the warrants issued in the Company’s stock and Convertible Notes Offering and the warrants issued to the Company’s placement agent were recognized as derivative warrant instruments at issuance and are measured at fair value at each reporting period. The Company determined the fair values of these warrants using a modified binomial valuation model. The fair values of the derivative warrants were calculated using a modified binomial valuation model with the following assumptions at each balance sheet date, the transfer date on December 19, 2012, and the date for the new grants in January and December 2012. (The market value of common stock, adjusted exercise price and offering price presented does not reflect the impact of the Share Exchange.)
|  | December 31, |  |  | January 31, |  |  | December 19, |  |  | December 27, |  |  | December 31, |
|  | 2011 |  |  | 2012 |  |  | 2012 |  |  | 2012 |  |  | 2012 |
Market value of common stock on measurement date (1) |  | $ | 0.37 |  |  | $ | 0.37 |  |  | $ | 0.39 |  |  | $ | 0.39 |  |  | $ | 0.39 |
Adjusted exercise price |  | $ | 0.24 - $0.26 |  |  | $ | 0.23 - $0.26 |  |  | $ | 0.41 - $0.83 |  |  | $ | 0.22 - $0.26 |  |  | $ | 0.41 - $0.83 |
Risk free interest rate (2) |  |  | 1.35 | % |  |  | 1.24 | % |  |  | 0.10% - 0.77 | % |  |  | 0.94 | % |  |  | 0.10% - 0.77 | %
Warrant lives in years |  | 7 years |  |  | 7 years |  |  | 4 months/5years |  |  | 6 years |  |  | 4 months/5years |
Expected volatility (3) |  |  | 156 | % |  |  | 157 | % |  |  | 125% - 161 | % |  |  | 161 | % |  |  | 125% - 161 | %
Expected dividend yield (4) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Probability of stock offering in any period over 5 years (5) |  |  | 25 | % |  |  | 25 | % |  |  | 25 | % |  |  | 25 | % |  |  | 25 | %
Range of percentage of existing shares offered (6) |  |  | 35 | % |  |  | 35 | % |  |  | 35 | % |  |  | 35 | % |  |  | 35 | %
Offering price range (7) |  | $ | 0.18 - $0.55 |  |  | $ | 0.13 - $0.56 |  |  | $ | 0.01 - $0.55 |  |  | $ | 0.12 - $0.60 |  |  | $ | 0.01 - $0.55 |
(1) | The market value of common stock is based on an enterprise valuation.
(2) | The risk-free interest rate was determined by management using the average of 5 and 7 year and the 3-month Treasury Bill as of the respective measurement date.
(3) | Because the Company does not have adequate trading history to determine its historical trading volatility, the volatility factor was estimated by management using the historical volatilities of comparable companies in the same industry and region.
(4) | Management determined the dividend yield to be 0% based upon its expectation that it will not pay dividends for the foreseeable future.
(5) | Management has determined that the probability of a stock offering is 25% for each quarter of the next five years.
(6) | Management estimates that the range of percentages of existing shares offered in each stock offering will be between 35% of the shares outstanding.
(7) | Represents the estimated offering price range in future offerings as determined by management.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708775-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708773-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41635-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624258-113959 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624181-113959 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80784-113994 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959 Reference 20: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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