[Stack-cvs] stack-dev/lib/reporting SkillsResources.php, NONE, 1.1.2.1

[Chris S. <san...@us...>]

Update of /cvsroot/stack/stack-dev/lib/reporting
In directory sfp-cvsdas-3.v30.ch3.sourceforge.com:/tmp/cvs-serv27852/lib/reporting

Added Files:
      Tag: STACK2_2
	SkillsResources.php 
Log Message:


--- NEW FILE: SkillsResources.php ---
<?php
/**
*
* Welcome to STACK.  A system for teaching and assessment using a
* computer algebra kernel.
*
* This file is licensed under the GPL License.
*
* A copy of the license is in your STACK distribution called
* license.txt.  If you are missing this file you can obtain
* it from:
* http://www.stack.bham.ac.uk/license.txt
*
* @author Chris Sangwin (C.J...@bh...)
*
* @package stackReport
*/


class SkillsResources
{
	 private $stackurl;

	 private $skills;
	 private $skillTags;
	 private $skillMajor;

	 private $resources;
	 private $resourceMap;

	 public function __construct($url) {

        $this->stackurl = $url;

	 	$this->loadSkills();
	 	$this->loadResources();

	 }

	private function loadSkills() {

         $skills = array();
         $skills['LOG']      = 'Logic';
         $skills['FOR']      = 'Using conventional forms of notation';

         $skills['NUM']      = 'Number';
         $skills['NUM-REL']  = 'Relative size';
         $skills['NUM-RTP']  = 'Ratio / Proportion';
         $skills['NUM-FRC']  = 'Fractions';
         $skills['NUM-DEC']  = 'Decimals';
         $skills['NUM-IND']  = 'Indices';
         $skills['NUM-NEG']  = 'Negative Numbers';

         $skills['ART']      = 'Arithmetic Operations';
         $skills['ART-ADD']  = 'Addition';
         $skills['ART-SUB']  = 'Subtraction';
         $skills['ART-MUL']  = 'Multiplication';
         $skills['ART-DIV']  = 'Division';
         $skills['ART-RUL']  = 'Rules';
         $skills['ALG']      = 'Algebra';
         $skills['ALG-GNO']  = 'Generalised number';
         $skills['ALG-VAR']  = 'Variable';
         $skills['ALG-FEQ']  = 'Forming Equations';
         $skills['ALG-TRN']  = 'Transposition';
         $skills['ALG-UNC']  = 'Unclosed Forms';
         $skills['ALG-GAT']  = 'Gathering of like terms';
         $skills['ALG-SMP']  = 'Simplification';
         $skills['ALG-EXB']  = 'Expand Brackets';
         $skills['ALG-FAC']  = 'Factorisation';
         $skills['ALG-RSD']  = 'Rationalisation of Surds';
         $skills['ALG-BEX']  = 'Binomial Expansion';
         $skills['ALG-SPF']  = 'Simple Partial Fractions';
         $skills['ALG-RPF']  = 'Partial Fractions involving a repeated term';
         $skills['ALG-QPF']  = 'Partial Fractions involving a quadratic term';
         $skills['ALG-IPF']  = 'Improper Partial Fractions';

         $skills['EST']      = 'Estimation';
         $skills['EST-EST']  = 'Estimating';
         $skills['EST-RND']  = 'Rounding';

         $skills['EQN']      = 'Equations';
         $skills['EQN-LIN']  = 'Solve Linear Equations';
         $skills['EQN-SIM']  = 'Solve Simultaneous Equations';
         $skills['EQN-QUD']  = 'Solve Quadratic Equations';
         $skills['EQN-INQ']  = 'Solve Inequations';

         $skills['WRP']      = 'Analysis of Word Problems';

         $skills['FNC']      = 'Functions';
         $skills['FNC-EVL']  = 'Evaluate a function';
         $skills['FNC-CMP']  = 'Composite Functions';
         $skills['FNC-INV']  = 'Inverse Functions';
         $skills['FNC-MOD']  = 'Modulus Functions';
         $skills['FNC-HYP']  = 'Hyperbolic Functions';

         $skills['GEO']      = 'Geometry';
         $skills['GEO-CRD']  = 'Coordinates';
         $skills['GEO-DST']  = 'Distances';
         $skills['GEO-GRD']  = 'Gradients';
         $skills['GEO-EQL']  = 'Equations of lines';
         $skills['GEO-ANM']  = 'Angular Measure';
         $skills['GEO-TRG']  = 'Right-angle Trig';
         $skills['GEO-TFN']  = 'Trigonometric Functions';
         $skills['GEO-CRC']  = 'Circles';
         $skills['GEO-TID']  = 'Trigonometric Identities';

         $skills['GRP']      = 'Interpreting Graphs';
         $skills['DIG']      = 'Analysis of Diagrams';

         $skills['SEQ']      = 'Sequences and Series';
         $skills['SEQ-TER']  = 'Terms in Series';
         $skills['SEQ-ART']  = 'Arithmetic Series';
         $skills['SEQ-ASM']  = 'Partial Sums of arithmetic Series';
         $skills['SEQ-GEO']  = 'Geometric Series';
         $skills['SEQ-SGM']  = 'Partial Sums of Geometric Series';
         $skills['SEQ-SNF']  = 'Sum to Infinity of Geometric Series';
         $skills['SEQ-BIS']  = 'Binomial Series';

         $skills['LGE']      = 'Logarithms and Exponentials';
         $skills['LGE-EXP']  = 'Exponential Function';
         $skills['LGE-LWE']  = 'Laws of Exponentials';
         $skills['LGE-LOG']  = 'The Logarithmic Function';
         $skills['LGE-LLG']  = 'Laws of Logarithms';

         $skills['DIF']      = 'Differentiation';
         $skills['DIF-CON']  = 'Concept of Differentiation';
         $skills['DIF-TAN']  = 'Gradient of Tangent';
         $skills['DIF-MON']  = 'Derivative of monomial';
         $skills['DIF-POL']  = 'Derivative of Polynomial';
         $skills['DIF-MXN']  = 'Maxima and Minima';
         $skills['DIF-EXP']  = 'Derivative of Exponential';
         $skills['DIF-LOG']  = 'Derivative of Logarithm';
         $skills['DIF-TAB']  = 'Table of Derivatives';
         $skills['DIF-PRD']  = 'Product Rule';
         $skills['DIF-QUT']  = 'Quotient Rule';
         $skills['DIF-CHN']  = 'Chain Rule';
         $skills['DIF-TRG']  = 'Derivatives of Trig Functions';
         $skills['DIF-IMP']  = 'Implicit Differentiation';
         $skills['DIF-PRM']  = 'Parametric Differentiation';

         $skills['INT']      = 'Integration';
         $skills['INT-CON']  = 'Concept and constant of integration';
         $skills['INT-DEF']  = 'Definite Integrals';
         $skills['INT-MON']  = 'Integrals of monomials';
         $skills['INT-POL']  = 'Integrals of polynomials and sums';
         $skills['INT-TRG']  = 'Integrals of trig functions';
         $skills['INT-EXP']  = 'Integrals of exponential functions';
         $skills['INT-XM1']  = 'Integrals of 1/x';
         $skills['INT-AUC']  = 'Area under curve';
         $skills['INT-ABC']  = 'Area between curves';
         $skills['INT-PRT']  = 'Integration by parts';
         $skills['INT-SUB']  = 'Integration by substitution';
         $skills['INT-VSR']  = 'Volume of Solid of Revolution';

         $skills['VEC']      = 'Vectors';
         $skills['VEC-ADD']  = 'Vector Addition';
         $skills['VEC-SUB']  = 'Vector Subtraction';
         $skills['VEC-VXS']  = 'Vector Multiplied by Scalar';
         $skills['VEC-PNT']  = 'Vector from point to point';
         $skills['VEC-MAG']  = 'Magnitude of Vector';
         $skills['VEC-UNT']  = 'Unit Vector';
         $skills['VEC-EQL']  = 'Vector Equation of Line';
         $skills['VEC-SCP']  = 'Scalar Product';


         $skillTags = array_keys($skills);

         $skillMajor = array();
         foreach ($skillTags as $skill) {
             if (strstr($skill, '-') !== false) {
          	    $skillMajor[]=$skill;
             }
         }

         $this->skills      = $skills;
         $this->skillMajor = $skillMajor;
         $this->skillTags  = $skillTags;

     } // end loadSkills()

	private function loadResources() {

        // title
        // url
        // skills (as comma separated list)
        // type, e.g. pdf, video, etc.
        // $resources[]    = $this->constructResource('','','','');

        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: The Chain Rule','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_5.pdf','DIF-CHN','pdf');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: The Chain Rule','','DIF-CHN','pdf');
        $resources[]    = $this->constructResource('Simultaneous equations','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-simult-2009-1.pdf','EQN-SIM','pdf');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Simultaneous equations','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_13.pdf','EQN-SIM','pdf');
        $resources[]    = $this->constructResource('Factoring simple expressions','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-factorsimple-2009-1.pdf','ALG-FAC','pdf');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Factoring simple expressions','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_5.pdf','ALG-FAC','pdf');
        $resources[]    = $this->constructResource('Decimals','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-decimals-2009-1.pdf','NUM-DEC','pdf');
        $resources[]    = $this->constructResource('Introduction to differentiation','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-introtodiff-2009-1.pdf','DIF-CON','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Introduction to differentiation','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_1.pdf','DIF-CON','PDF');
        $resources[]    = $this->constructResource('Expanding or removing brackets','http://www.mathcentre.ac.uk/resources/Algebra%20leaflets/mc-expandbrack-2009-1.pdf','ALG-EXB','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: The exponential constant e','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/3_4.pdf','LGE-EXP','PDF');
        $resources[]    = $this->constructResource('The exponential constant e','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-expconstant-2009-1.pdf','LGE-EXP','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: The logarithm function','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/3_7.pdf','LGE-LOG','PDF');
        $resources[]    = $this->constructResource('Factorising quadratics','http://www.mathcentre.ac.uk/resources/Algebra%20leaflets/mc-factorisingquadratics-2009-1.pdf','ALG-FAC','PDF');
        $resources[]    = $this->constructResource('Fractions','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-fractions-2009-1.pdf','NUM-FRC','PDF');
        $resources[]    = $this->constructResource('Addition and subtraction of fractions','http://www.mathcentre.ac.uk/resources/leaflets/mathcentre/business/mc-bus-addsub-2009-1.pdf','NUM-FRC','PDF');
        $resources[]    = $this->constructResource('Multiplication and division of fractions','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-mult-and-div-2009-1.pdf','NUM-FRC','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: The hyperbolic functions','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/3_5.pdf','FNC-HYP','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: The hyperbolic identities','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/3_6.pdf','FNC-HYP','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Integration as summation','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_12.pdf','INT-CON','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Integration as the reverse of differentiation','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_6.pdf','INT-CON','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Integration by parts','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_10.pdf','INT-PRT','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Integration by substitution','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_11.pdf','INT-SUB','PDF');
        $resources[]    = $this->constructResource('The equation of a straight line','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-slope-2009-1.pdf','GEO-EQL','PDF');
        $resources[]    = $this->constructResource('Logarithms','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-logarithms-2009-1.pdf','LGE-LOG','PDF');
        $resources[]    = $this->constructResource('The laws of logarithms','http://www.mathcentre.ac.uk/resources/Algebra%20leaflets/mc-logs2-2009-1.pdf','LGE-LLG','PDF');
        $resources[]    = $this->constructResource('Sigma notation','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-sigma-2009-1.pdf','SEQ','PDF');
        $resources[]    = $this->constructResource('The modulus of a number','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/1_5.pdf','FNC-MOD','PDF');
        $resources[]    = $this->constructResource('Approaching Numeracy as an Adult','http://www.mathcentre.ac.uk/resources/uploaded/mccp-samuels-refno1.pdf','ART','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Partial Fractions 1','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_23.pdf','ALG-RPF,ALG-QPF,ALG-SPF','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Partial Fractions 2','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_24.pdf','ALG-RPF,ALG-QPF','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Partial Fractions 3','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_25.pdf','ALG-IPF','PDF');
        $resources[]    = $this->constructResource('Percentages','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-percentage-2009-1.pdf','NUM','PDF');
        $resources[]    = $this->constructResource('Indices or Powers','http://www.mathcentre.ac.uk/resources/Algebra%20leaflets/mc-indices1-2009-1.pdf','NUM-IND','PDF');
        $resources[]    = $this->constructResource('Negative and fractional powers','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-negfracpower-2009-1.pdf','NUM-IND','PDF');
        $resources[]    = $this->constructResource('Laws of indices','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-lawsindices-2009-1.pdf','NUM-IND','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Product and quotient rules','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_4.pdf','DIF-PRD,DIF-QUT','PDF');
        $resources[]    = $this->constructResource('Pythagoras’ theorem','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/4_5.pdf','GEO','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Degrees and radians','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/4_1.pdf','GEO-ANM','PDF');
        $resources[]    = $this->constructResource('Ratios','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-ratios-2009-1.pdf','NUM-RTP','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Addition and subtraction','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-ratios-2009-1.pdf','ART-ADD,ART-SUB','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Multiplication and division','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_9.pdf','ART-MUL,ART-DIV','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Evaluating definite integrals','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_9.pdf','INT-DEF','PDF');
        $resources[]    = $this->constructResource('What is a function?','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-function-2009-1.pdf','FNC','PDF');
        $resources[]    = $this->constructResource('x-y plots','http://www.mathcentre.ac.uk/resources/mc-healthsciences/mc-xyplots-2009-1.pdf','FNC','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Inequalities','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_16.pdf','EQN-INQ','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Graphical solution of inequalities','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_18.pdf','EQN-INQ','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Quadratic equations 1','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_14.pdf','EQN-QUD','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Quadratic equations 2','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_15.pdf','EQN-QUD','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Rearranging formulas 1','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_10.pdf','ALG-TRN,EQN-LIN','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Rearranging formulas 2','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_11.pdf','ALG-TRN','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: What is a surd?','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/2_27.pdf','ALG-RSD','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Scientific notation','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/1_3.pdf','FOR,NUM-DEC,NUM-IND','PDF');
        $resources[]    = $this->constructResource('Symbols','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-symbols-2009-1.pdf','FOR','PDF');
        $resources[]    = $this->constructResource('Rearranging formulas 1','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-formulas1-2009-1.pdf','ALG-TRN','PDF');
        $resources[]    = $this->constructResource('Rearranging formulas 2','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-formulas2-2009-1.pdf','ALG-TRN','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Graphs of the trig functions','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/4_3.pdf','GEO-TFN','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Trigonometrical Identities','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/4_4.pdf','GEO-TID','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Evaluating definite integrals','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_9.pdf','INT-DEF','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Linearity rules of integration','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_8.pdf','INT-POL','PDF');
        $resources[]    = $this->constructResource('Engineering Maths First Aid Kit. Quick Reference Leaflet: Table of Integrals','http://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/8_7.pdf','INT','PDF');
        $resources[]    = $this->constructResource('Table of derivatives','http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-tableofderiv-2009-1.pdf','DIF','PDF');

        $resources[]    = $this->constructResource('Teach Yourself Workbook: The Chain Rule','http://www.mathcentre.ac.uk/resources/uploaded/mc-ty-chain-2009-1.pdf','DIF-CHN','pdf');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The Chain Rule','http://www.mathcentre.ac.uk/video/405','DIF-CHN','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The Product Rule','http://www.mathcentre.ac.uk/video/404','DIF-PRD','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The Quotient Rule','http://www.mathcentre.ac.uk/video/403','DIF-QUT','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The standard functions','http://www.mathcentre.ac.uk/video/402','DIF','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The derivatives of further functions','http://www.mathcentre.ac.uk/video/409','DIF','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: Parametric Differentiation','http://www.mathcentre.ac.uk/video/406','DIF-PRM','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: Implicit Differentiation','http://www.mathcentre.ac.uk/video/408','DIF-IMP','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: Equation of the tangent line','http://www.mathcentre.ac.uk/video/410','DIF-TAN','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The area under a curve','http://www.mathcentre.ac.uk/video/412','INT-AUC','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: The anti-derivative','http://www.mathcentre.ac.uk/video/413','INT-CON','video');
        $resources[]    = $this->constructResource('mathtutor: Video tutorial: Mathematical language','http://www.mathcentre.ac.uk/video/294','FOR','video');

        $resourceMap = array();
        foreach ($resources as $res) {
            foreach ($res['skill'] as $tskill) {
        	    $resourceMap[$tskill][] = array('title'=>$res['title'],'URL'=>$res['URL'],'type'=>$res['type']);
            }
        }

        $this->resources=$resources;
        $this->resourceMap=$resourceMap;


	} // end loadResources()

    private function constructResource($title,$URL,$skills,$type) {

        $res['title']   = $title;
        $res['URL']     = $URL;
        $skills=explode(',',$skills);
        foreach ($skills as $skill) {
            $res['skill'][]   = trim(strtoupper($skill));
        }
        $res['type']    = strtoupper($type);

        return $res;

    }

	private function typeToIcon($type) {

		if ('PDF'==$type) {
			$icon = 'page_white_acrobat.png';
		} else if ('VIDEO'==$type) {
			$icon = 'page_white_camera.png';
		} else {
			$icon = 'page_white_go.png';
		}

        return $icon;

	}


    private function getDiagnosticQuestions($keyword) {

        $db = new StackDBADOdb();
        $db -> connect();

        $sql = "SELECT questionID, questionName FROM stackquestion, question_keyword, keywords, question_lines  WHERE
               (keyword LIKE ".$db->dbSafeString($keyword)." ) AND
               (question_keyword.kwid = keywords.id) AND
               (question_keyword.qid = stackquestion.questionID) AND
               (stackquestion.line = question_lines.id) AND
               (stackquestion.questionID = question_lines.latestVersion)
               ORDER BY stackquestion.questionID";
        $query = $db->query($sql);

        $result=array();
        foreach($query as $row)
        {
            $result[] = array($row[0],$row[1]);
        }
        return $result;
    }

    private function getDiagnosticStems($keyword) {

        $db = new StackDBADOdb();
        $db -> connect();

        $sql = "SELECT stackquestion.questionID, stackquestion.questionName, display_cache.xhtml FROM question_keyword, keywords, display_cache, display_cache_sequence, question_lines, stackquestion  WHERE
               (keyword LIKE ".$db->dbSafeString($keyword)." ) AND
               (question_keyword.kwid = keywords.id) AND
               (stackquestion.line = question_lines.id) AND
               (stackquestion.questionID = question_keyword.qid) AND
               (stackquestion.questionID = question_lines.latestVersion) AND
               (stackquestion.questionID = display_cache.qID) AND
               (display_cache_sequence.nextNode = display_cache.id) AND
               (display_cache_sequence.event = 0)";

        $query = $db->query($sql);

        $result=array();
        foreach($query as $row)
        {
            $result[$row[0]] = array($row[1],$row[2]);
        }
        return $result;
    }


    private function getQuestionStem($qname) {

        $db = new StackDBADOdb();
        $db -> connect();

        $sql = "SELECT stackquestion.questionID,stackquestion.questionName, display_cache.xhtml FROM question_keyword, keywords, display_cache, display_cache_sequence, question_lines, stackquestion  WHERE
               (stackquestion.questionName = $qname) AND
               (stackquestion.line = question_lines.id) AND
               (stackquestion.questionID = question_lines.latestVersion) AND
               (stackquestion.questionID = display_cache.qID) AND
               (display_cache_sequence.nextNode = display_cache.id) AND
               (display_cache_sequence.event = 0)";

        $query = $db->query($sql);

        $result=array();
        foreach($query as $row)
        {
            $result = array($row[0],$row[1],$row[2]);
        }
        return $result;
    }

   private function getSkillsResources($qid){

         $kwdb = new StackDBKeywords();
         $kwdb->connect();

         $keywords = $kwdb->getQuestionsKeywords($qid);
         $skills = array();
         if(!empty($keywords)) {
   		    asort($keywords);
 		    foreach($keywords as $keyword) {
               if (in_array($keyword,$this->skillTags)) {
               	  $skills[]=$keyword;
               }
   			}
         }

         return $skills;
    }
    public function generateSkillsTable(){

   	      $skillsTable="<ol><ol>\n";
   	      foreach ($this->skills as $skill => $name) {

              $res_links='';
              if (array_key_exists($skill,$this->resourceMap)) {
                  foreach($this->resourceMap[$skill] as $res) {
                      $rtitle = $res['title'];
                      $rurl   = $res['URL'];
                      $icon   = $this->typeToIcon($res['type']);
                      $res_links .= '<a target="_blank" href="'.$rurl.'"><img border=0 alt="'.$rtitle.'" src="'.$icon.'" /></a>';
                  }


              }

              $questions = $this->getDiagnosticQuestions($skill);
              $qno = count($questions);

              $links = '';
              if (0==$qno) {
        	      $col = '#FF3300';
              } else {
                  $col = '#000000';
                  foreach($questions as $question) {
                      $qid   = $question[0];
          	          $qname = $question[1];
                      $links .= ' <a target="_blank" href="'.$this->stackurl.'/lib/ui/questionTest.php?id='.$qid.'"><img border=0 src="'.$this->stackurl.'/pix/eye.png" title="'.$qname.'" alt="'.$qname.'" /></a>'."\n   ";
                }

              }


              if (strstr($skill, '-') !== false) {
                  $skillsTable .= "  <li><font color='$col'>$name ($skill)</font> $qno $res_links $links</li>\n";
              }  else {
                  $skillsTable .=  "</ol>\n <li><b><font color='$col'>$name ($skill)</font></b>  $qno $res_links $links</li>\n<ol>\n";
              }
          }

   	      $skillsTable.="</ol></ol>\n\n\n";
          return $skillsTable;
    }


    public function generateQuiz($quizlist){

    	 $questions = $this->getDiagnosticStems('diagnostic');
         $kwdb = new StackDBKeywords();
         $kwdb->connect();

         $quiz='';
         foreach ($questions as $qid => $question) {

              $quiz.= "<font size=+2><b>($qid) {$question[0]}</b>:</font> <font color=orange>";

              $keywords = $kwdb->getQuestionsKeywords($qid);
              if(!empty($keywords)) {
     		    		asort($keywords);
     		    		$firstKeyword = true;
     		    		foreach($keywords as $keyword) {
     		    			if(!$firstKeyword) {
     		    				$quiz.=  ', ';
     		    			} else $firstKeyword = false;
     		    			$quiz.=  $keyword;
     		    		}
     			}
              $quiz.=  "</font>";

              $quiz.= "<p>".$question[1]."</p>";
              $quiz.= "<p><hr /></p>";
          }

         return $quiz;
    }

    public function generateWikiPage() {

          $wiki='';
    	  foreach ($this->skills as $skill => $name) {
              if (strstr($skill, '-') !== false) {
                  $wiki.= "## $name ($skill)\n";
              }  else {
                  $wiki.= "# $name ($skill)\n";
              }
    	  }
          return $wiki;
    }

    public function generateLaTeX() {

          $tot = 0;
          $toplevelonly = TRUE;
          $LaTeX="\begin{enumerate}\n";
    	  foreach ($this->skills as $skill => $name) {
              if (strstr($skill, '-') !== false) {
                  $tot ++;
                  $toplevelonly = TRUE;
                  $LaTeX.= "   \item  $name ($skill)\n";
              }  else {
                  if ($toplevelonly) { $tot ++; }
                  $toplevelonly = FALSE;
                  $LaTeX.= "\end{enumerate}\n \item $name ($skill)\n  \begin{enumerate}\n";
              }
    	  }
          $LaTeX.="  \end{enumerate}\n\end{enumerate}";
          return $LaTeX.$tot;
    }

    public function generateTestedSkillsPage($test) {

        $skills_tested=array();

        $skillsTable='<h2>Test questions</h2>';
        $skillsTable.='<ol>';

        foreach ($test as $qname){

            $qid = getQuestionID($qname);
            $qskills = $this->getSkillsResources($qid);

            $link = ' <a target="_blank" href="'.$this->stackurl.'/lib/ui/questionTest.php?id='.$qid.'"><img border=0 src="'.$this->stackurl.'/pix/eye.png" title="'.$qname.'" alt="'.$qname.'" /></a>'."\n   ";

            $sk = '';
            if (empty($qskills)){
                $sk = 'NONE! ';
            } else {
    	        foreach($qskills as $qskill){
    	           $skills_tested[$qskill]++;
                   $sk .= $qskill.'  ';
     	        }
            }
   	        $skillsTable.= '<li>'.$qname.' ('.$qid.') '.$sk.' '.$link.' </li>';

        }
        $skillsTable.='</ol>';

        $skillsTable.='<h2>Skills tested</h2>';

   	    $skillsTable.="<ol><ol>\n";
   	    foreach ($this->skills as $skill => $name) {


              if (array_key_exists($skill,$skills_tested)) {
                  $col  = '#000000';
        	      $qnum = $skills_tested[$skill];
              } else {
        	      $col  = '#FF3300';
                  $qnum = '';
              }

              if (strstr($skill, '-') !== false) {
                  $skillsTable .= "  <li><font color='$col'>$name ($skill) $qnum </font></li>\n";
              }  else {
                  $skillsTable .=  "</ol>\n <li><b><font color='$col'>$name ($skill)</b> $qnum </font></li>\n<ol>\n";
              }
   	    }

   	      $skillsTable.="</ol></ol>\n\n\n";
          return $skillsTable;

    }


}