Reasoning Capabilities Buildfile: build.xml init: compile: Finding Transitive Closures (RDFS reasoning) dist: [jar] Building jar: /home/aks1/software/eclipse/workspace/ontojena/dist/lib/ontojena.jar Inferred Triples vehicle run: [java] MODEL OK [java] Resource: http://ontosem.org/#fire-engine Land-vehicle [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#fire-engine) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#all) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#physical-object) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#inanimate) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#wheeled-vehicle) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#engine-propelled-vehicle) Engine-propelled--vehicle Wheeled--vehicle [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#wheeled-engine-vehicle) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#artifact) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#object) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#land-vehicle) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#vehicle) [java] - (http://ontosem.org/#fire-engine rdfs:subClassOf http://ontosem.org/#truck) Wheeled-engine-vehicle [java] - (http://ontosem.org/#fire-engine rdfs:label ' "a truck with equipment for fighting fires"') [java] - (http://ontosem.org/#fire-engine rdf:type owl:Class) [java] fire-engine recognized as subclas of vehicle BUILD SUCCESSFUL Total time: 10 seconds real 0m11.144s user 0m9.530s sys 0m0.190s [[email protected] ontojena]$ Truck Fire-engine
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PLACEMENT HOW? Placement Placement Test Test Transfer Transfer Credits Credits SAT SAT or or ACT ACT Scores Scores High High School School AP AP Scores Scores (Mathematics) (Mathematics) WHAT TO DO? Take Take placement placement test test on on any any campus campus at at Testing Testing Center. Center. Accuplacer Accuplacer MATH MATH can can be be taken taken twice. twice. Students Students who who wish wish higher higher placement placement must must then then “appeal”. “appeal”. Appeal Appeal is is request to take a pencil-and-paper type test on material from the course they request to take a pencil-and-paper type test on material from the course they placed placed into. into. Bring Bring transcript transcript showing showing general general education education math math credits credits from from another another college college or or university university to to CCBC CCBC for for evaluation. evaluation. If If completed completed in in Maryland, Maryland, the the highest highest level level developmental math course, Intermediate Algebra can be used for placement. developmental math course, Intermediate Algebra can be used for placement. Placement Placement by by SAT SAT MATH MATH score score of of 500 500 or or higher higher (or (or by by ACT ACT MATH MATH score score 21 21 or or higher) places the student into an entry-level general education math course higher) places the student into an entry-level general education math course (MATH (MATH 111, 111, 125, 125, 131/2/3, 131/2/3, 135, 135, 163). 163). For For higher higher placement, placement, the the student student must must take take Accuplacer MATH. MATH. Accuplacer Students Students with with documentation documentation of of AP AP math math scores scores of of 3, 3, 4, 4, or or 5 5 from from high high school school can can be awarded college credit and placement according to this chart. be awarded college credit and placement according to this chart.
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Core Math MATH 95 MATH 96 MATH 126 MATH 176 MATH 96 MATH 126 MATH 176 MATH 126E MATH 176 Recommendation: If you start in Math 95 or Math 96 take summer classes to stay on track! MATH 126 MATH 176 MATH 181 or Math 182 will meet the College of Business math requirement. MATH 176 Pg. 12 of your Advising Manual
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Rounding Methods Examples Math.ceil(2.1) returns 3.0 Math.ceil(2.0) returns 2.0 Math.ceil(-2.0) returns –2.0 Math.ceil(-2.1) returns -2.0 Math.floor(2.1) returns 2.0 Math.floor(2.0) returns 2.0 Math.floor(-2.0) returns –2.0 Math.floor(-2.1) returns -3.0 Math.rint(2.1) returns 2.0 Math.rint(2.0) returns 2.0 Math.rint(-2.0) returns –2.0 Math.rint(-2.1) returns -2.0 Math.rint(2.5) returns 2.0 Math.rint(-2.5) returns -2.0 Math.round(2.6f) returns 3 Math.round(2.0) returns 2 Math.round(-2.0f) returns -2 Math.round(-2.6) returns -3 8
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Math & Nature  Vertebrate skulls vary greatly in form & function  www.digimorph.org
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Different only in base-URI . _:g103 . _:g104 _:g103 . _:g104 . _:g105 . _:g105 . _:g105 . . _:g103 . _:g104 _:g103 . _:g104 . _:g105 . _:g105 . _:g105 . Introduction ᵒ Approach ᵒ Evaluation ᵒ Conclusion 11
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         Skulls Skulls symbolize death and rebirth. The Aztecs and Mesoamerican civilizations kept skulls as trophies and displayed them during rituals. The skulls were also used to honor the dead. The skulls are typically grinning because they are laughing at death. They can be made from paper, wood, paper mache, tin, or sugar. Calacas These are toy figurines for children. They are used to introduce the concept of death to children so that they are not afraid of it.
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Topological Sort A topological sort of an acyclic directed graph orders the vertices so that if there is a path from vertex u to vertex v, then vertex v appears after vertex u MATH 120 One topological sort in the ordering. of the course prerequisite graph at left: MATH 150 MATH 224 ECE 282 CS 111 CS 150 ECE 381 CS 111, MATH MATH 152 120, CS 140, MATH 423 MATH 125, CS ECE 482 MATH 250 150, MATH 224, CS 234 CS 240 STAT 380 CS 234, CS 240, ECE 483 MATH 321 ECE 282, CS 312, CS 312 CS 321 CS 325, MATH CS 325 150, MATH 152, CS 482 STAT 380, CS 321, CS 340 MATH 250, MATH CS 382 CS 434 321, CS 314, CS 314 MATH 423, CS CS 330 340, CS 425, ECE CS 425 381, CS 434, ECE CS 447 482, CS 330, CS CS 423 382, CS 423, CS CS 499 CS 438 CS 456 438, CS 454, CS 447, CS 499, CS CS 454 482, CS 456, ECE MATH 125 CS 340 CS 140 Page 5
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Math Study Skills Inventory Rate your achievement of the following statements by placing a 3 for almost always, 2 for sometimes, and 1 for almost never. If you have never even thought about doing what the statement says, put a 0. Selecting a math class _______ 1. I schedule my math class at a time when I am mentally sharp. _______ 2. When I register for a math class, I choose the best instructor for me. _______ 3. If I have a choice, I select a math class that meets three or four days a week instead of one or two. _______ 4. I schedule the next math class as soon as possible after I have completed the current course. _______ 5. I am sure that I have signed up for the correct level math course.  Time and place for studying math _______ 6. I study math every day. _______ 7. I try to get my math homework immediately after math class. _______ 8. I have a specific time to study math. _______ 9. I have a specific place with few distractions to study math. ______ 10. I seek help with my math homework in the lab/tutoring center. ______ 11. I am careful to keep up to date with math homework. ______ 12. I study math at least 8 to 10 hours a week. 
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Math questions • Evaluate the following expressions: – – – – – – – Math.abs(-1.23) Math.pow(3, 2) Math.pow(10, -2) Math.sqrt(121.0) - Math.sqrt(256.0) Math.round(Math.PI) + Math.round(Math.E) Math.ceil(6.022) + Math.floor(15.9994) Math.abs(Math.min(-3, -5)) • Math.max and Math.min can be used to bound numbers. Consider an int variable named age. – What statement would replace negative ages with 0? – What statement would cap the maximum age to 40? 27
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IEEE Std 1076.3 Packages Numeric_Bit  Comparison operators - various combinations of signed and unsigned arguments FUNCTION FUNCTION “>” “>” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean; FUNCTION “<” (l,r:unsigned) RETURN boolean; FUNCTION “<” (l,r:unsigned) RETURN boolean; FUNCTION FUNCTION “<=” “<=” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean; FUNCTION “>=” (l,r:unsigned) RETURN boolean; FUNCTION “>=” (l,r:unsigned) RETURN boolean; FUNCTION FUNCTION “=” “=” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean; FUNCTION FUNCTION “/=” “/=” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean;  Shift and rotate functions FUNCTION FUNCTION shift_left shift_left (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION shift_right (arg:unsigned; count:natural) RETURN FUNCTION shift_right (arg:unsigned; count:natural) RETURN unsigned; unsigned; FUNCTION rotate_left (arg:unsigned; count:natural) RETURN unsigned; FUNCTION rotate_left (arg:unsigned; count:natural) RETURN unsigned; FUNCTION FUNCTION rotate_right rotate_right (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION FUNCTION sll sll (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION slr (arg:unsigned; count:natural) RETURN unsigned; FUNCTION slr (arg:unsigned; count:natural) RETURN unsigned; FUNCTION FUNCTION rol rol (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION ror (arg:unsigned; count:natural) RETURN unsigned; FUNCTION ror (arg:unsigned; count:natural) RETURN unsigned; 24/03/19 UAH-CPE528 8
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IEEE Std 1076.3 Packages Numeric_Bit  Comparison operators - various combinations of signed and unsigned arguments FUNCTION FUNCTION “>” “>” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean; FUNCTION “<” (l,r:unsigned) RETURN boolean; FUNCTION “<” (l,r:unsigned) RETURN boolean; FUNCTION FUNCTION “<=” “<=” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean; FUNCTION “>=” (l,r:unsigned) RETURN boolean; FUNCTION “>=” (l,r:unsigned) RETURN boolean; FUNCTION FUNCTION “=” “=” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean; FUNCTION FUNCTION “/=” “/=” (l,r:unsigned) (l,r:unsigned) RETURN RETURN boolean; boolean;  Shift and rotate functions FUNCTION FUNCTION shift_left shift_left (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION shift_right (arg:unsigned; count:natural) RETURN FUNCTION shift_right (arg:unsigned; count:natural) RETURN unsigned; unsigned; FUNCTION rotate_left (arg:unsigned; count:natural) RETURN unsigned; FUNCTION rotate_left (arg:unsigned; count:natural) RETURN unsigned; FUNCTION FUNCTION rotate_right rotate_right (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION FUNCTION sll sll (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION slr (arg:unsigned; count:natural) RETURN unsigned; FUNCTION slr (arg:unsigned; count:natural) RETURN unsigned; FUNCTION FUNCTION rol rol (arg:unsigned; (arg:unsigned; count:natural) count:natural) RETURN RETURN unsigned; unsigned; FUNCTION ror (arg:unsigned; count:natural) RETURN unsigned; FUNCTION ror (arg:unsigned; count:natural) RETURN unsigned; 24/03/19 UAH-CPE528 24
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                  ACT SCORES PLACEMENT English 18 - 27 Engl 1010 Math 19 - 27 Math 1020/1810/1100 (check major) Math 28 + Credit given for Math 1020 SAT SCORES PLACEMENT Verbal 450 – 620 Engl 1010 Verbal 630 - 710 Credit given for Engl 1010 Verbal 720 + Credit given for Engl 1010 & 1020  Math 460 - 620 Math 1020/1810/1100 (check major)  Math 630 + Credit given for Math 1020 COMPASS SCORES PLACEMENT Writing 68 + Engl 1010  Pre-Algebra 56 - 94 Math 1020 Algebra 36 – 88 Math 1020 College Algebra 30 - 66 Math 1020  Pre-Algebra 95+ Credit for Math 1020 Algebra 89+ Credit for Math 1020 College Algebra 67+ Credit for Math 1020
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Different in Literal Content . “Eric Miller” . “mailto:[email protected]“ . “Dr” . . “John Doe” . “mailto:[email protected] “ . “Mr” . Introduction ᵒ Approach ᵒ Evaluation ᵒ Conclusion 9
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Entity-Valued Relations Relation Inverse(s) per:children per:parents per:other_family per:other_family per:parents per:children per:siblings per:siblings per:spouse per:spouse per:employee_of {org,gpe}:employees* per:member_of org:membership* per:schools_attended org:students* per:city_of_birth gpe:births_in_city* per:stateorprovince_of_birth gpe:births_in_stateorprovince* per:country_of_birth gpe:births_in_country* per:cities_of_residence gpe:residents_of_city* per:statesorprovinces_of_residence gpe:residents_of_stateorprovince per:countries_of_residence gpe:residents_of_country* per:city_of_death gpe:deaths_in_city* per:stateorprovince_of_death gpe:deaths_in_stateorprovince* per:country_of_death gpe:deaths_in_country* org:shareholders {per,org,gpe}:holds_shares_in* org:founded_by {per,org,gpe}:organizations_founded* org:top_members_employees per:top_member_employee_of* {org,gpe}:member_of org:members org:members {org,gpe}:member_of org:parents {org,gpe}:subsidiaries org:subsidiaries org:parents org:city_of_headquarters gpe:headquarters_in_city* org:stateorprovince_of_headquarters gpe:headquarters_in_stateorprovince* org:country_of_headquarters gpe:headquarters_in_country*
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Programs: (see graduate handbook for details) M.S. program: 27-33 credit hours, thesis, exams, project depending on option Required for all options: Advanced Calculus (Math 451) Real Analysis (Math 551) and Linear Algebra (Math 543) Can place out of these via Basic Exam if you have equivalent background Courses offered on a yearly basis : Math 541-641 Algebra Math 551-651 Real Analysis Math 581-681 Topology Math 521-522 Numerical Analysis Math 563 Modeling Math 564 Differential Equations (spring) Math 543 Linear Algebra (spring) Math 567-568 Advanced calculus for engineering/sci students Math 571 Combinatorics (spring this year) Math 573 Graph theory (fall this year) (second semester of Graph Theory & Combinatorics depends on enrollment and level of students) Exams: M.S. Advanced Exam (for option A & C) Two areas from Algebra, Real Analysis, Topology, Differential Equations Option B: Industrial/Applied mathematics – 33 hrs + project Mathematics for Secondary Educators option – 33 hours + exams
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The New Stack – Process Is the Next Platform Client Punch Card or Terminal Custom (10’s of users) Application Data Management Applicatio n OS and Databas e Mainframe 4 Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Request Form Any Device (Millions of users) PC or Internet (1000’s of users) Composites Applicatio n Applicatio n Applicatio n OS OS OS DB OS Client Server OS OSApplicatio ns OS OS DB OS DB OS DB OS OS SOA Magal and Word ! Essentials of Business Processes and Information Systems | © 2009 Composites OS OSApplicatio ns OS OS DB OS DB OS DB OS OS
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IEEE Std 1076.3 Packages Numeric_Bit  Resize functions FUNCTION FUNCTION resize resize (arg:unsigned;new_size:natural) (arg:unsigned;new_size:natural) RETURN RETURN unsigned; unsigned; FUNCTION resize (arg:signed;new_size:natural) RETURN signed; FUNCTION resize (arg:signed;new_size:natural) RETURN signed;  Conversion functions FUNCTION FUNCTION to_integer to_integer (arg:unsigned) (arg:unsigned) RETURN RETURN natural; natural; FUNCTION to_unsigned (arg,size:natural) RETURN FUNCTION to_unsigned (arg,size:natural) RETURN unsigned; unsigned;  Logical operators FUNCTION FUNCTION “not” “not” (l:unsigned) (l:unsigned) RETURN RETURN unsigned; unsigned; FUNCTION “and” (l,r:unsigned) RETURN FUNCTION “and” (l,r:unsigned) RETURN unsigned; unsigned; FUNCTION FUNCTION “or” “or” (l,r:unsigned) (l,r:unsigned) RETURN RETURN unsigned; unsigned; FUNCTION “nand” (l,r:unsigned) RETURN FUNCTION “nand” (l,r:unsigned) RETURN unsigned; unsigned; FUNCTION “nor” (l,r:unsigned) RETURN unsigned; FUNCTION “nor” (l,r:unsigned) RETURN unsigned; FUNCTION FUNCTION “xnor” “xnor” (l,r:unsigned) (l,r:unsigned) RETURN RETURN unsigned; unsigned;  Edge detection functions FUNCTION FUNCTION rising_edge(SIGNAL rising_edge(SIGNAL s:bit) s:bit) RETURN RETURN boolean; boolean; FUNCTION falling_edge(SIGNAL s:bit) RETURN FUNCTION falling_edge(SIGNAL s:bit) RETURN boolean; boolean; 24/03/19 UAH-CPE528 9
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IEEE Std 1076.3 Packages Numeric_Bit  Resize functions FUNCTION FUNCTION resize resize (arg:unsigned;new_size:natural) (arg:unsigned;new_size:natural) RETURN RETURN unsigned; unsigned; FUNCTION resize (arg:signed;new_size:natural) RETURN signed; FUNCTION resize (arg:signed;new_size:natural) RETURN signed;  Conversion functions FUNCTION FUNCTION to_integer to_integer (arg:unsigned) (arg:unsigned) RETURN RETURN natural; natural; FUNCTION to_unsigned (arg,size:natural) RETURN FUNCTION to_unsigned (arg,size:natural) RETURN unsigned; unsigned;  Logical operators FUNCTION FUNCTION “not” “not” (l:unsigned) (l:unsigned) RETURN RETURN unsigned; unsigned; FUNCTION “and” (l,r:unsigned) RETURN FUNCTION “and” (l,r:unsigned) RETURN unsigned; unsigned; FUNCTION FUNCTION “or” “or” (l,r:unsigned) (l,r:unsigned) RETURN RETURN unsigned; unsigned; FUNCTION “nand” (l,r:unsigned) RETURN FUNCTION “nand” (l,r:unsigned) RETURN unsigned; unsigned; FUNCTION “nor” (l,r:unsigned) RETURN unsigned; FUNCTION “nor” (l,r:unsigned) RETURN unsigned; FUNCTION FUNCTION “xnor” “xnor” (l,r:unsigned) (l,r:unsigned) RETURN RETURN unsigned; unsigned;  Edge detection functions FUNCTION FUNCTION rising_edge(SIGNAL rising_edge(SIGNAL s:bit) s:bit) RETURN RETURN boolean; boolean; FUNCTION falling_edge(SIGNAL s:bit) RETURN FUNCTION falling_edge(SIGNAL s:bit) RETURN boolean; boolean; 24/03/19 UAH-CPE528 25
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40 Tentative List of Courses for Graduate CEEN Students Mathematics and Statistics: MATH 415 Modern Algebra I* MATH 416 Modern Algebra II MATH 446 Principles of Analysis I* MATH 447 Topics in Analysis II STAT 601 Statistical Analysis MATH 606 Theory of Probability I MATH 607 Real Variables I* MATH 608 Real Variables II MATH 619 - Applied Probability* MATH 625 - Applied SDEs MATH 651 Optimization I* MATH 630 – Combinatorics MATH 652
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Understanding your Math assessment scores Math Test Math Score Math Course Taken Trigonometry Recommendation 44 or higher College Algebra 43 or higher Math 071 & Math 62 Math 021*, 22*, 51, 52*, 61, 63 (also requires geometry) Algebra 33 or higher Math 013 Pre-Algebra 34 or higher Math 111 21-33 0-33 Math 311 Math 310 and/or Math 014
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MELT program curriculum map with information about courses in which each learning outcome and performance indicator is (a) first introduced, (b) reinforced (c) reinforced and assessed Course Learning Outcome 1 Learning Outcome 2 P 1.1 P 1.2 P 1.3 P 2.1 P 2.2 P 2.3 P 2.4 a a b/c a a b/c a a b/c     a     a     a     a MATH 2031 Number Systems and Operations for Teachers b/c b/c b/c b/c b/c b/c b/c MATH 2032 Algebra and Geometry for Teachers b/c b/c b/c b/c b/c b/c b/c MATH 2350 Foundations of Mathematics b/c b/c b/c         MATH 3100 Linear Algebra and Matrix Theory b/c b/c b/c         MATH 4310 History of Mathematical Ideas a a a         MATH 4320 Theory of Numbers b/c b/c b/c         MATH 4420 Foundations of Geometry b/c b/c b/c         MATH 4630 Mathematical Modeling and Analysis a a       a   MATH 4720 Statistical Methods c c c a b a   MATH 1450 Calculus 1 MATH 1451 Calculus 2 MATH 2030 Problem Solving and Reasoning for Teachers
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Math & Nature  Vertebrate skulls vary greatly in form & function ~50 bones ~7 moving parts 22 bones 1 moving part
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Math & Nature  Vertebrate skulls vary greatly in form & function Liem et al. (2001)
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Math & Nature  Vertebrate skulls vary greatly in form & function ◦ Moveable parts of the fish skull are responsible for the diversity of feeding mechanisms in fish  Jaw protrusion in the sand tiger shark Carcharias taurus  D. Huber
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Math & Nature  Vertebrate skulls vary greatly in form & function ◦ Moveable parts of the fish skull are responsible for the diversity of feeding mechanisms in fish  Jaw protrusion in the sling-jaw wrasse Epibulus insidiator  P. Wainwright
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Referencias                         http://en.wikipedia.org/wiki/TLCAN http://es.wikipedia.org/wiki/Tratado_de_Libre_Comercio_de_Am%C3%A9rica_del_Norte http://www.nwlaborpress.org/2003/12-19-03TLCAN.html http://www.fair.org/index.php?page=1396 http://www.prensalatina.com.mx/article.asp?ID={5CE21DEF-9E6F-4F94-B016-F97DF4F1EDD 2} http://sdpjalisco.senderodelpeje.com/2008/11/06/productores-de-maiz-exigen-mejores-precios-a -sus-cultivos/ http://www.organicconsumers.org/espanol/080905_maiz.htm http://www.TLCAN-sec-alena.org/DefaultSite/index_e.aspx?ArticleID=299 http://www.cec.org/pubs_info_resources/law_treat_agree/naaec/index.cfm?varlan=english http://www.naalc.org/naalc.htm http://www.nadbank.org/about/about_origins.html http://www.cocef.org/background.htm http://www.sice.oas.org/trade/TLCAN/TLCANtce.asp http://www.fvdrc.com/ http://es.wikipedia.org/wiki/Tratado_de_Libre_Comercio_de_Am%C3%A9rica_del_Norte http://en.wikipedia.org/wiki/North_American_Free_Trade_Agreement http://useconomy.about.com/od/tradepolicy/p/TLCAN_History.htm http://www.citizen.org/trade/TLCAN/ http://www.fpif.org/briefs/vol4/v4n26TLCAN.html http://www.siliconv.com/trade/tradepapers/environmental.html http://emaychair.dal.ca/ http://sesc.zlir.com/sustainability-center-student-forum-wed-feb-6th-at-7pm/ http://www.heritage.org/research/tradeandeconomicfreedom/bg1480.cfm http://www.smh.com.au/news/opinion/earth-needs-a-climate-of-change/2005/07/17/112153886 2977.html
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