Document:

Exhibit
        10.15

      NUVOTEC
        USA

      
        
          

        

      

      723
        The
        Parkway - Richland, WA 99352

      Telephone
        - 509.943.5319

      Facsimile
        - 509.943.5528

      www.nuvotecusa.com

      

      

      September
        26, 2005

      

      

      Susan
        Mikels

      Richard
        Eaton

      Worldwide
        Universal Corp

      925
        West
        Kennewick Avenue

      Kennewick,
        WA 99336

      

      

      Subject: Asset
        Purchase Agreement Dated March 14, 2005 between Vivid Learning Systems, Inc.
        and
        TrueActive Software, Inc.

      

      

      This
        letter serves as notification to Worldwide Universal Corp [formerly known
        as
        TrueActive Software, Inc.] that Nuvotec USA,
        Inc.
        has assumed the obligations of Vivid Learning Systems, Inc. as delineated
        in the
        subject agreement and will heretofore honor all terms of the subject agreement.
        As the parent company to Vivid Learning Systems, Inc., Nuvotec USA,
        Inc.
        has assumed said obligations pursuant to Section 7.8 of the subject
        agreement.

      

      Should
        you have any questions, please do not hesitate to contact me on
        509/943-5319.

      

      

      
        	 	 	 	 
	/s/ Sandra
                Muller	 	 	 
	
                
Sandra
                Muller	 	 	
              
	
                General
                  CounselExhibit
      10.16

    

    AGREEMENT

    

    THIS
      AGREEMENT, made and entered into this First day of October 2005, by and between
      Nuvotec USA,
      Inc.
      (hereinafter “Nuvotec USA”),
      and
      Vivid Learning Systems, Inc. (hereinafter “Vivid”).

     

    WHEREAS,
      Nuvotec USA
      is the
      holder of eighty percent (80%) of Vivid and as such as consolidated
      financials;

    

    WHEREAS,
      the Nuvotec, Inc. banking relationship with Key Bank is being transferred over
      to Nuvotec USA,
      said
      banking relationship with Key Bank for various purposes including the
      administration of a line of credit;

    

    WHEREAS,
      Nuvotec USA
      intends
      to provide Vivid funding based on said line of credit;

    

    NOW,
      THEREFORE, in consideration of the mutual promises hereinafter contained, the
      parties hereto agree as follows:

    

    
      	
              1.

            	
              It
                is acknowledged by the parties that Vivid will receive funding from
                Nuvotec USA
                based
                on said line of credit and in return Vivid shall operate within the
                terms
                of the Key Bank-Nuvotec USA
                line of credit.

            

    

    

    
      	
              2.

            	
              The
                Key Bank-Nuvotec USA
                line
                of credit documentation and all terms and conditions thereto are
                hereby
                incorporated by reference.

            

    

    

    
      	
              3.

            	
              Vivid
                shall pay Nuvotec USA
                interest
                at the rate as noted in the Key Bank-Nuvotec USA
                line
                of credit agreement. In all instances, Vivid shall make best efforts
                to
                pay-down outstanding line of credit balances in as aggressive manner
                as
                cash flow permits.

            

    

    

    
      	
              4.

            	
              This
                Agreement shall not be amended, modified, or extended, nor shall
                any
                waiver of any right hereunder be effective unless set forth in a
                document
                executed by the parties.

            

    

    

    
      	
              5.

            	
              This
                Agreement contains all of the agreements, representations, and
                understandings of the parties hereto and supersedes and replaces
                any and
                all previous understandings, commitments, or agreements, oral or
                written,
                related to the Nuvotec USA
                line
                of credit.

            

    

    

    
      	
              6.

            	
              If
                any part, term, or provision of this Agreement shall be held void,
                illegal, unenforceable, or in conflict with any law of a federal,
                state,
                or local government having jurisdiction over this Agreement, the
                validity
                of the remaining portions of provisions shall not be affected
                thereby.

            

    

    

    
      	
              7.

            	
              This
                Agreement shall be enforced and interpreted under the laws of the
                State of
                Washington.

            

    

    

    IN
      WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed
      in
      duplicate, each of which shall be considered an original, as of the day and
      year
      first written above.

     

    
      	 	 	 	 
	NUVOTEC
USA,
              INC.	 	 	VIVID
              LEARNING
              SYSTEMS, INC.
	 	 	 	 
	/s/ Robert
              L.
              Ferguson	 	 	/s/ Christopher
              L. Britton
	
              
                

              

              Robert L. Ferguson

              Chairman & CEO

            	 	 	
              
                

              

              Christopher L. Britton

              CEORELEASE AGREEMENT

      This  Release  Agreement  (the  "Agreement")  is  entered  into and  dated
effective as of December 28, 2005 (the  "Effective  Date") by and among  Applied
Spectrum  Technologies,  Inc., a Delaware  corporation (the "Company"),  Norwood
Venture Corp., a Delaware corporation ("Norwood"), and Mark R. Littell, an adult
resident of the State of New Jersey ("Littell").

                                    RECITALS

      A. Littell,  Norwood and  Norwood's  affiliated  companies,  stockholders,
officers,  directors,  employees,  advisors  or  controlling  persons  ("Norwood
Affiliates")  desire to release the  Company  from any and all  obligations  and
claims that Littell, Norwood or Norwood Affiliates may have against the Company.

      B. The  execution  and  delivery of this  Agreement  is a condition to the
closing of the transactions  contemplated  under a certain  Securities  Purchase
Agreement  by and  between KI Equity  Partners  III,  LLC,  a  Delaware  limited
liability  company  ("Buyer")  and Norwood  dated  December 14, 2005  ("Purchase
Agreement").

      NOW,  THEREFORE,  in  consideration  of the above recitals,  the following
representations,  warranties,  covenants  and  conditions,  and  other  good and
valuable consideration,  the receipt of which is acknowledged, the parties agree
as follows:

      1. Release of all Claims. Littell, for himself, and Norwood and itself and
the Norwood  Affiliates,  and each of respective  successors  and assigns of the
foregoing,  hereby forever and irrevocably release and discharge the Company and
its successors and assigns,  and their  respective past and present officers and
directors,  employees,  shareholders, and all other related entities, including,
but not limited to, assigns, predecessors, successors, controlling corporations,
subsidiaries or other affiliates  (jointly,  the "Related Parties") from any and
all claims,  demands, and causes of action of every kind and nature,  including,
without  limitation,  those  relating to any federal,  state or local laws,  and
common law; provided,  however, that nothing contained herein shall be construed
to limit in any way the rights of either Littell, Norwood or Norwood Affiliates,
and their  successors  and  assigns,  to  enforce  the terms of this  Agreement.
Norwood and Littell  irrevocably  agree to refrain from  directly or  indirectly
asserting  any claim or demand or commencing  (or causing to be  commenced)  any
suit,  action,  or  proceeding of any kind, in any court or before any tribunal,
against the Company and its Related Parties based upon any released claim.

      2.  Representations  and  Warranties of Company.  Company  represents  and
warrants to Norwood  that:  (i) on the date of this  Agreement,  Company has all
necessary authority to execute this Agreement;  (ii) there is no claim,  action,
suit or other  proceeding  pending,  threatened  or  known,  which,  if  decided
adversely, would interfere with the consummation of the transaction contemplated
hereby;  (iii) no approval  or consent of any  governmental  authority  or third
party is required for Company to enter into or perform this Agreement; (iv) this
Agreement is  enforceable in accordance  with its terms,  subject to the laws of
insolvency  and general  principles of equity;  and (v) this  Agreement has been
duly authorized and adopted by the Company.

<PAGE>

      3.  Representations  and  Warranties  of Norwood.  Norwood  represents  to
Company  that:  (i) on the date of this  Agreement,  Norwood  has all  necessary
authority to execute this  Agreement;  (ii) there is no claim,  action,  suit or
other proceeding pending, threatened or known against Norwood, which, if decided
adversely, would interfere with the consummation of the transaction contemplated
hereby;  (iii) no approval  or consent of any  governmental  authority  or third
party is required for Norwood to enter into or perform this Agreement; (iv) this
Agreement is enforceable  against Norwood in accordance with its terms,  subject
to the  laws of  insolvency  and  general  principles  of  equity;  and (v) this
Agreement has been duly authorized and adopted by Norwood.

      4. Reserved.

      5.  Delivery  and  Cooperation.  If  either  party  requires  any  further
documentation,  the other party will promptly respond to any reasonable requests
for additional documentation.

      6. Miscellaneous.

            (a) Successors and Assigns. This Agreement shall be binding upon the
parties hereto and their respective successors and assigns.

            (b)  Survival of  Covenants  and  Representations.  All  agreements,
covenants,  representations  and  warranties  made by the parties  herein  shall
survive the delivery of this Agreement.

            (c)  Severability.  Should any part of this Agreement for any reason
be declared invalid or unenforceable, such decision will not affect the validity
or enforceability of any remaining portion,  which remaining portion will remain
in force and effect as if this  Agreement  had been  executed  with the  invalid
portion  thereof  eliminated,  and it is hereby declared as the intention of the
parties  hereto that the parties would have  executed the  remaining  portion of
this Agreement  without including therein any such part or portion that may, for
any reason, be hereafter declared invalid or unenforceable.

            (d) Governing Law and Venue. This Agreement shall be governed by and
construed  in  accordance  with  the  laws of the  State  of  Delaware,  without
reference to choice of law principles.

            (e) Captions.  The descriptive  headings of the various  Sections or
parts of this  Agreement  are for  convenience  only and  shall not  affect  the
meaning or construction of any of the provisions hereof.

            (f)  Entire  Agreement.   This  Agreement   constitutes  the  entire
agreement  among the parties  hereto  concerning  the subject  matter  contained
herein, and supersedes all prior agreements or understanding of the parties.  No
provision of this  Agreement may be waived or amended except in a writing signed
by both  parties.  A  waiver  or  amendment  of any  term or  provision  of this
Agreement  shall not be  construed as a waiver or amendment of any other term or
provision.

                                       2
<PAGE>

            (g)  Counterparts.  This  Agreement  may be  executed  by  facsimile
signatures  and in  multiple  counterparts,  each of which  shall be  deemed  an
original.  It shall not be necessary that each party executes each  counterpart,
or that any one  counterpart  be executed by more than one party so long as each
party executes at least one counterpart.

            (h) Arbitration. All disputes,  controversies or claims ("Disputes")
arising out of or relating to this Agreement  shall in the first instance be the
subject  of  a  meeting  between  a   representative   of  each  party  who  has
decision-making  authority  with respect to the matter in  question.  Should the
meeting  either  not take  place or not result in a  resolution  of the  Dispute
within twenty (20) business  days  following  notice of the Dispute to the other
party, then the Dispute shall be resolved in a binding arbitration proceeding to
be held in New York, New York in accordance with the international  rules of the
American Arbitration Association.  The arbitrators may award attorneys' fees and
other related arbitration expenses,  as well as pre- and post-judgment  interest
on any award of  damages,  to the  prevailing  party or  parties,  in their sole
discretion.  The  parties  agree  that a panel  of  three  arbitrators  shall be
required,  all of whom  shall be fluent in the  English  language,  and that the
arbitration  proceeding shall be conducted entirely in the English language. Any
award of the arbitrators shall be deemed confidential  information for a minimum
period of five years.

               [Remainder of this page intentionally left blank.]

                                       3
<PAGE>

IN WITNESS WHEREOF, this Agreement has been executed as of the date first
written above.

                                        NORWOOD VENTURE CORP.

                                        By: /s/ Mark R. Littell
                                           -------------------------------------
                                              Mark R. Littel, President

                                        /s/ Mark R. Littell
                                        ----------------------------------------
                                        Mark R. Littell, Individually

                                        APPLIED SPECTRUM TECHNOLOGIES, INC.

                                        By: /s/ Mark R. Littell
                                           -------------------------------------
                                                Mark R. Littel, President

                                       4

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