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THIS PAPER PRESENTS A 27-LEVEL ASYMMETRIC MULTILEVEL SHUNT ACTIVE POWER FILTER TOPOLOGY THAT ALLOWS THE COMPENSATION OF A NONLINEAR LOAD, AS WELL AS THE DC VOLTAGE REGULATION THANKS TO A COMPREHENSIVE CONTROL STRATEGY. THE TOPOLOGY CONSIDERS THE RATIO 9?3?1 IN ORDER TO GENERATE THE AC WAVEFORM WITH A SIMPLE STAIRCASE MODULATION ALGORITHM. THE DYNAMIC MODEL OF THE PROPOSED TOPOLOGY IS OBTAINED AND VALIDATED WITH A SIMPLE OPEN LOOP SIMULATION. A SUITABLE LINEAR MASTER-SLAVE CONTROL SCHEME IS PRESENTED IN ORDER TO ENSURE THE CURRENT TRACKING AND THE DC VOLTAGE REGULATION. THE PROPERNESS OF THE PROPOSAL IS VERIFIED TROUGH DYNAMIC AND STATIONARY TESTS.

WE EXTEND THE FINITE VOLUME NUMERICAL SCHEME PROPOSED BY HILLIGES AND WEIDLICH [11] TO SECOND ORDER TRAFFIC FLOW MODELS CONSISTING IN SYSTEMS OF NON STRICTLY HYPERBOLIC CONSERVATION LAWS OF TEMPLE CLASS. THE SCHEME IS SHOWN TO SATISFY SOME MAXIMUM PRINCIPLE PROPERTIES ON THE DENSITY. WE PROVIDE NUMERICAL TESTS ILLUSTRATING THE BEHAVIOUR AT VACUUM AND THE GAIN IN COMPUTATIONAL TIME WHEN DEALING WITH OPTIMIZATION ALGORITHMS.

THIS PAPER PRESENTS A NEW METHOD FOR VOLTAGE DISTORTION ELIMINATION IN SINGLE-PHASE STAND-ALONE INVERTERS. IN FACT, THE COOPERATION OF A SELECTIVE HARMONIC ELIMINATION APPROACH WITH A FEED-FORWARD METHOD ELIMINATES THE HARMONICS MORE EFFECTIVELY. IN THIS PAPER FIRST, CONVENTIONAL METHODS BASED ON SELECTIVE HARMONIC ELIMINATION AND FEED-FORWARD COMPENSATION ARE PRESENTED. THEN, A NEW APPROACH BASED ON THE COMBINATION OF SELECTIVE HARMONIC ELIMINATION AND FEED-FORWARD COMPENSATION IS PROPOSED, WHICH COMPENSATES FOR THE HARMONICS MUCH BETTER AND HAS BETTER FUNCTIONALITY IN ELIMINATION OF THE VOLTAGE DISTORTIONS. THE RESULTS OF THE PROPOSED METHOD ARE VALIDATED ON A 5 KW PROTOTYPE. © 2023 IEEE.

IN THIS PAPER WE PRESENT A CONTEXTUAL MODELING APPROACH FOR MODEL-BASED RECOMMENDER SYSTEMS THAT INTEGRATES AND EXPLOITS BOTH USER PREFERENCES AND CONTEXTUAL SIGNALS IN A COMMON VECTOR SPACE. DIFFERENTLY TO PREVIOUS WORK, WE CONDUCT A USER STUDY ACQUIRING AND ANALYZING A VARIETY OF REALISTIC CONTEXTUAL SIGNALS ASSOCIATED TO USER PREFERENCES IN SEVERAL DOMAINS. MOREOVER, WE REPORT EMPIRICAL RESULTS EVALUATING OUR APPROACH IN THE MOVIE AND MUSIC DOMAINS, WHICH SHOW THAT ENHANCING MODEL-BASED RECOMMENDER SYSTEMS WITH TIME, LOCATION AND SOCIAL COMPANION INFORMATION IMPROVES THE ACCURACY OF GENERATED RECOMMENDATIONS.

ITEM SPLITTING IS A CONTEXT-AWARE RECOMMENDATION TECHNIQUE BASED ON COLLABORATIVE FILTERING (CF), WHICH GROUPS AND EXPLOITS RATINGS ACCORDING TO THE CONTEXTS IN WHICH THEY WERE GENERATED. IT SHOWS POSITIVE EFFECTS ON RECOMMENDATION ACCURACY IN THE PRESENCE OF SIGNIFICANT DIFFERENCES BETWEEN THE USERS' PREFERENCES FROM DISTINCT CONTEXTS. TO DETERMINE WHETHER SUCH DIFFERENCES ARE SIGNIFICANT, IN THIS PAPER WE PROPOSE A NOVEL IMPURITY CRITERION BASED ON THE FISHER'S EXACT TEST, WHICH RETURNS A SCORE ON THE DIFFERENCE BETWEEN RATINGS GIVEN TO AN ITEM. EXPERIMENTAL RESULTS ON A DATASET OF MOVIE RATINGS SHOW A LOWER RATING PREDICTION ERROR WITH RESPECT TO OTHER IMPURITY CRITERIA - IN PARTICULAR, RELATED WITH TIME CONTEXT SIGNALS - , LETTING US IMPROVE THE RECOMMENDATION PERFORMANCE OF A STATE-OF-THE-ART CF ALGORITHM IN AN OFFLINE EVALUATION SETTING THAT SIMULATES REAL-WORLD CONDITIONS.

SOFTWARE DEVELOPMENT METHODOLOGIES ARE FUNDAMENTAL FOR THE PROPER DEVELOPMENT OF SOFTWARE PROJECTS. HOWEVER, THE MOST PERTINENT ONES ARE NOT ALWAYS SELECTED DEPENDING ON THE RESOURCES AVAILABLE, WHICH COULD RESULT IN FAILED PROJECTS. IN FACT, SEVERAL REPORTS SHOW A HIGH RATE OF FAILURE IN SOFTWARE PROJECTS. THE TYPE OF DEVELOPMENT METHODOLOGY CHOSEN IS ONE IMPORTANT FACTOR WHEN DIFFERENTIATING BETWEEN SUCCESSFUL FROM UNSUCCESSFUL PROJECTS. FOR EXAMPLE, IT HAS BEEN REPORTED THAT PROJECTS THAT USE AGILE PRACTICES HAVE A GREATER PERCENTAGE OF SUCCESS. HOWEVER, AGILE METHODOLOGIES ARE NOT NECESSARILY APPROPRIATE FOR ANY TYPE OF PROJECT. GIVEN THE ABOVE, A DEVELOPMENT METHODOLOGIES RECOMMENDATION SYSTEM PROTOTYPE WAS DEVELOPED, THAT ALLOWS GUIDING DEVELOPERS WITH LOW EXPERIENCE OR KNOWLEDGE TO SELECT MORE APPROPRIATE METHODOLOGIES ACCORDING TO DIFFERENT CRITERIA. THESE CRITERIA WERE OBTAINED FROM BIBLIOGRAPHIC SOURCES AND THEN VALIDATED AND COMPLEMENTED THROUGH AN EMPIRICAL STUDY WHERE SURVEYS WERE APPLIED TO PROFESSIONALS OF COMPANIES THAT DEVELOP SOFTWARE IN CHILE.

WE CONSIDER A REAL CASE STUDY OF A VEHICLE ROUTING PROBLEM WITH A HETEROGENEOUS FLEET AND TIME WINDOWS (HFVRPTW) FOR A FRANCHISE COMPANY BOTTLING COCA-COLA PRODUCTS IN COLOMBIA. THIS STUDY AIMS TO DETERMINE THE ROUTES TO BE PERFORMED TO FULFILL THE DEMAND OF THE CUSTOMERS BY USING A HETEROGENEOUS FLEET AND CONSIDERING SOFT TIME WINDOWS. THE OBJECTIVE IS TO MINIMIZE THE DISTANCE TRAVELED BY THE PERFORMED ROUTES. WE PROPOSE A TWO-PHASE HEURISTIC ALGORITHM. IN THE PROPOSED APPROACH, AFTER AN INITIAL PHASE (FIRST PHASE), A GRANULAR TABU SEARCH IS APPLIED DURING THE IMPROVEMENT PHASE (SECOND PHASE). TWO ADDITIONAL PROCEDURES ARE CONSIDERED TO HELP THAT THE ALGORITHM COULD ESCAPE FROM LOCAL OPTIMUM, GIVEN THAT DURING A GIVEN NUMBER OF ITERATIONS THERE HAS BEEN NO IMPROVEMENT. COMPUTATIONAL EXPERIMENTS ON REAL INSTANCES SHOW THAT THE PROPOSED ALGORITHM IS ABLE TO OBTAIN HIGH-QUALITY SOLUTIONS WITHIN A SHORT COMPUTING TIME COMPARED TO THE RESULTS FOUND BY THE SOFTWARE THAT THE COMPANY CURRENTLY USES TO PLAN THE DAILY ROUTES.

IN THIS WORK, WE INTRODUCE A HYBRID METAHEURISTIC APPROACH FOR THE 3L-CVRP. THE PROPOSED APPROACH USES AN INITIAL SOLUTION OBTAINED BY A MODIFIED CLARK & WRIGHT ALGORITHM CONSIDERING THE PACKING CONSTRAINTS BY A GRASP SCHEME. THEN, A GRANULAR TABU SEARCH (GTS) ALGORITHM IS EMPLOYED TO IMPROVE THE INITIAL SOLUTION, MEANWHILE THE GRASP APPROACH VALIDATES THE PACKING CONSTRAINTS DURING THE SEARCH PROCESS. THE PROPOSED ALGORITHM HAS BEEN COMPARED WITH THE MOST EFFECTIVE ALGORITHMS PROPOSED FOR THE 3L-CVRP. COMPUTATIONAL RESULTS SHOW THE EFFECTIVENESS OF THE PROPOSED APPROACH.

THIS INVESTIGATION PRESENTS A NEW MATHEMATICAL MODEL TO SOLVE THE VEHICLE ROUTING PROBLEM WITH BACKHAULS AND TIME WINDOWS (VRPBTW). IN THIS PROBLEM, CUSTOMERS ARE DIVIDED INTO TWO SUBSETS, FOR DELIVERY AND COLLECTION. EACH VEHICLE LEAVES THE WAREHOUSE TO DELIVER MERCHANDISE TO LINEHAULS CUSTOMERS. SUBSEQUENTLY, IT MAKES A COLLECTION OF MERCHANDISE TO BACKHAULS CUSTOMERS AND RETURNS TO THE DEPARTURE WAREHOUSE. IN THIS PROPOSAL, THE OBJECTIVE IS TO MINIMIZE THE TOTAL DISTANCE, SATISFYING ALL RESTRICTIONS. IN ADDITION, THE NUMBER OF VEHICLES TO MAKE THE ROUTE IS MINIMIZED. THE MODEL HAS BEEN EVALUATED BASED ON ARTIFICIAL DATA ADAPTED FROM THE LITERATURE, WHICH INCLUDES DEMAND FOR 10, 15, 20 AND 30 NODES. THE COMPUTATIONAL RESULTS CONTRIBUTE TO VALIDATE THE APPROACH AND SCALE THE PROBLEM FOR FUTURE WORK.

THIS PAPER PRESENTS A NOVEL SIMPLIFIED METHOD TO IMPLEMENT THE FINITE SET -MODEL PREDICTIVE CONTROL TECHNIQUE FOR PHOTOVOLTAIC GENERATION SYSTEMS CONNECTED TO THE AC NETWORK. THIS METHOD MAINTAINS THE ADVANTAGES OF THE CONVENTIONAL FINITE SET -MODEL PREDICTIVE CONTROL, SUCH AS FAST RESPONSE, SIMPLE IMPLEMENTATION, AND EASY UNDERSTANDING; BUT IT ALSO ELIMINATES THE USE OF A COST FUNCTION AND HENCE THE WEIGHTING FACTORS, INSTEAD, IT FINDS THE OPTIMAL OPERATING STATE DIRECTLY FROM THE MODEL AND THE DISCRETE NUMBER OF VALID STATES OF THE CONVERTER. ALTHOUGH THE PROPOSED ALGORITHM DOES NOT COMPUTE A COST FUNCTION, IT IS ABLE TO SELECT THE INVERTER STATE THAT MINIMIZES THE TRACKING ERROR BY USING A HEXAGONAL CONVERGENCE REGION. THE MAIN ADVANTAGE OF THIS TECHNIQUE IS TO REDUCE THE COMPUTATIONAL COST IN 43THAT SELECTS THE BEST STATE, PRESENTING A SIMPLE AND COMPLETE ALGORITHM WITHOUT COMPROMISING THE PREDICTIVE CONTROL PERFORMANCE. THE PROPOSED ALGORITHM PROPERLY OPERATES UNDER VARIOUS CONDITIONS SUCH AS CHANGES IN THE NETWORK FREQUENCY AND CHANGES IN THE SYSTEM PARAMETERS.

OVER THE LAST DECADE, THE USE OF SOCIAL MEDIA AS A MASSIVE COMMUNICATION MEDIUM HAS GIVEN PEOPLE A TOOL TO EXPRESS THEIR OPINIONS. IN IT, PEOPLE WRITE THEIR THOUGHTS AND FEELINGS ABOUT PLENTY OF TOPICS GENERATING LARGE AMOUNT OF DATA THAT CAN BE ANALYZED BY COMPANIES AND RESEARCHERS. BEING TASKS OF THE NATURAL LANGUAGE PROCESSING, EMOTION ANALYSIS FOCUSES ON EXTRACTING THE UNDERLYING EMOTIONS IN TEXT, MEANWHILE, SENTIMENT ANALYSIS FOCUSES ON EXTRACTING THE POLARITY OF IT. TO ACCOMPLISH THIS TWO TASKS, TRADITIONAL MACHINE LEARNING AND DEEP LEARNING TECHNIQUES ARE USED. HOWEVER, TO REACH GOOD GENERALIZATION PERFORMANCE, THESE TECHNIQUES REQUIRE LARGE DATASETS OF LABELED DATA FOR TRAINING. FOR RESEARCHERS THIS IS AN ISSUE BECAUSE IN LANGUAGES LIKE SPANISH THE LABELED DATASETS ARE SPARSE. TO SOLVE THIS, DATA AUGMENTATION TECHNIQUES ARE USED TO GENERATE WIDER DATASETS OF LABELED DATA FROM A SMALL, LABELED DATASET. THIS WORK PRESENTS AN OPENMP VERSION FOR SHARED MEMORY SYSTEMS OF A DATA AUGMENTATION TECHNIQUE CALLED POS WISE SYNONYM SUBSTITUTION THAT REPLACES SOME OF THE WORDS OF A SENTENCE WITH THEIR SYNONYMS EXTRACTED FROM WORDNET TO CREATE NEW SENTENCES. WITH THE PARALLEL APPROACH WE REDUCED THE EXECUTION TIME REASONABLY COMPARED TO THE ORIGINAL VERSION REACHING A SPEEDUP OF UP TO 17.5X

THIS PAPER ADDRESSES THE CURRENT STATUS AND FUTURE RESEARCH AND DEVELOPMENT PERSPECTIVES ASSOCIATED WITH TECHNOLOGIES TO HARNESS OFFSHORE RENEWABLE ENERGY, INCLUDING OFFSHORE WIND, WAVES, TIDES, OCEAN CURRENTS, AND THERMAL AND SALINITY GRADIENT, IN SOUTH AMERICA (SA). IT FOCUSES ON FIVE COUNTRIES: ARGENTINA, BRAZIL, CHILE, COLOMBIA AND URUGUAY. AT FIRST, A COMPREHENSIVE SURVEY PRESENTS THE NUMBER OF SCIENTIFIC PAPERS CLASSIFIED BASED ON THE RESOURCE TO SHOW THE TENDENCY AND IMPORTANCE OF SUCH SUBJECTS IN THE ACADEMIC COMMUNITY. EACH COUNTRY?S ELECTRICITY MATRIX AND GRID CONNECTION ARE SHOWN TO UNDERSTAND THE REGION?S RENEWABLE SOURCE PARTICIPATION SITUATION. THE POTENTIAL OF OFFSHORE RENEWABLE RESOURCES IS ADDRESSED BY CONSIDERING THE PUBLISHED TECHNICAL PAPERS IN SCIENTIFIC JOURNALS. THE MAIN CONFLICTS AND SYNERGIES ASSOCIATED WITH OCEAN SPACE UTILIZATION ARE PRESENTED BY CONSIDERING THE EXCLUSIVE ECONOMIC ZONE OF EACH COUNTRY. THE STATUS OF THE REGULATORY FRAMEWORKS TO PROMOTE AND DEVELOPMENT OF OFFSHORE RENEWABLE ENERGIES IS PRESENTED. TWO SECTIONS ARE DEDICATED TO PRESENTING THE ACTIVE, DECOMMISSIONED AND PLANNED PROJECTS, RESEARCH GROUPS AND LABORATORY INFRASTRUCTURES TO DEVELOP THE TECHNOLOGIES. THE LAST SECTION DISCUSSES THE FUTURE PERSPECTIVES ON THE DEVELOPMENT OF THIS SECTOR IN SA. IT IS OBSERVED THAT SA, WITH MORE THAN 25,000 KM OF COASTLINE, HAS A GREAT POTENTIAL FOR OFFSHORE RENEWABLE ENERGY; HOWEVER, SO FAR, THESE RESOURCES HAVE NOT BEEN EXPLORED COMMERCIALLY. LARGER INVESTMENT IN THE SECTOR, ESTABLISHING AN ADEQUATE LEGAL FRAMEWORK AND DEPLOYING FULL-SCALE DEMONSTRATION PROJECTS AT SEA ARE NECESSARY FOR THE COMMERCIALIZATION OF SUCH TECHNOLOGIES IN SA.

DUE TO THE CONTINUOUS INCREASE IN INDUSTRIAL POLLUTION AND MODERN LIFESTYLE, SEVERAL TYPES OF AIR CONTAMINANTS AND THEIR CONCENTRATIONS ARE EMERGING IN THE ATMOSPHERE. BESIDES, PHOTOCATALYSIS HAS GAINED MUCH ATTENTION IN THE ELIMINATION OF AIR POLLUTION. SEVERAL ULTRAVIOLET AND VISIBLE LIGHT ACTIVE PHOTOCATALYSTS WERE TESTED IN AIR POLLUTANT TREATMENT AND THEREBY, THE NUMBER OF REPORTS WAS INCREASED IN THE PAST FEW YEARS. IN THIS CONTEXT, THIS REVIEW DESCRIBES THE PHOTOCATALYTIC TREATMENT OF GASEOUS INORGANIC CONTAMINANTS LIKE NOX, H2S, AND ORGANIC POLLUTANTS LIKE FORMALDEHYDE, ACETALDEHYDE, AND BENZENE DERIVATIVES. DIFFERENT PHOTOCATALYSTS WITH THEIR AIR POLLUTANT REMOVAL EFFICIENCY WERE EXPLAINED. IMPROVING STRATEGIES SUCH AS METAL/NON-METAL DOPING, COMPOSITE FORMATION FOR PHOTOCATALYST ACTIVITIES HAVE BEEN STUDIED. MOREOVER, AN ANALYSIS IS PRESENTED FROM EACH OF THE EXISTING PHOTOCATALYTIC IMMOBILIZATION APPROACHES. ALSO, FACTORS RESPONSIBLE FOR EFFECTIVE PHOTOCATALYSIS WERE EXPLAINED. OVERALL, THE PHOTOCATALYTIC ABATEMENT TECHNIQUE IS AN AUSPICIOUS WAY TO ELIMINATE DIFFERENT AIR CONTAMINANTS. BESIDES, EXISTING DRAWBACKS AND FUTURE CHALLENGES ARE ALSO DISCUSSED.

NOWADAYS, STATIC POWER CONVERTERS HAVE A TRANSCENDENTAL ROLE AT AN INDUSTRIAL LEVEL. THE TWO-LEVEL CONVERTER IS STILL THE MOST USED, SUCH AS IN THE CASE OF USE IN AC ELECTRICAL MACHINE DRIVES OR THE INCLUSION OF RENEWABLE ENERGIES IN ELECTRICAL SYSTEMS. HOWEVER, DUE TO ITS ADMIRABLE ADVANTAGES, THE MULTILEVEL CONVERTER IS A VALID ALTERNATIVE FOR HIGHER QUALITY AND EFFICIENCY BENEFITS. IN PARTICULAR, ONE OF THE MOST STUDIED TOPOLOGIES IS THE CASCADED H-BRIDGE, WHICH CAN BE CLASSIFIED ACCORDING TO ITS DC VOLTAGE RATIOS AS SYMMETRICAL AND ASYMMETRICAL. THE LATTER MAKES IT POSSIBLE TO OBTAIN A HIGH-QUALITY OUTPUT VOLTAGE WAVEFORM USING FEWER INVERTERS PER PHASE. HOWEVER, THIS HAS DRAWBACKS SUCH AS: (I) REGENERATION DUE TO THE MODULATION TECHNIQUE, (II) ASYMMETRIC POWER DISTRIBUTION AMONG THE INVERTERS, AND (III) LOSS OF MODULARITY. IN THIS WORK, IT IS PROPOSED TO DESIGN A MODULATION TECHNIQUE FOR THE GENERATION OF A STEPPED PHASE VOLTAGE BASED ON THE SUM OF MODIFIED SQUARE WAVES GENERATED BY H-BRIDGE INVERTERS IN CASCADE WITH ASYMMETRIC DC VOLTAGE RATIO IN ORDER TO OBTAIN A DISTRIBUTION OF SYMMETRICAL ACTIVE POWER BETWEEN THE CELLS AND A MINIMUM THD OF THE OUTPUT PHASE VOLTAGE. FOR THE ABOVE, THE MINIMIZATION OF THE THD OF THE OUTPUT PHASE VOLTAGE IS PERFORMED. AS A RESULT, THE DC VOLTAGES AND FIRING ANGLES ARE OBTAINED FOR EACH MODIFIED SQUARE WAVEFORM. THUS, FOR SIX CELLS PER PHASE WITH M=1.0, 6.976% OF THD IS OBTAINED, AND AN EFFICIENCY OF 95.32%.

THE COST FUNCTION SELECTION IS CONSIDERED ONE OF THE MOST RELEVANT ASPECTS FOR THE IMPLEMENTATION OF MODEL PREDICTIVE CONTROL STRATEGIES. IN THIS PAPER A STUDY OF THE MOST COMMON COST FUNCTIONS USED FOR THE CONTROL OF A TWO LEVEL VOLTAGE SOURCE INVERTER IS PRESENTED. THE PAPER INTRODUCES SEVERAL COST FUNCTION ALTERNATIVES THAT COULD BE CONSIDERED FOR DIFFERENT POWER ELECTRONIC CONVERTER APPLICATIONS TO COMPARE THE IMPLEMENTATION AND RESULTING CONVERTER WAVEFORMS. THE RESULTS SHOW THAT MODEL PREDICTIVE CONTROL IS AN ALTERNATIVE FOR THE IMPLEMENTATION OF DIFFERENT CONTROL OBJECTIVES IN POWER ELECTRONIC CONVERTERS.

HIS PAPER PROPOSES A TOOL FOR THE EVALUATION OF ALGORITHMS FOR GRID SYNCHRONIZATION USING THE DELFINO LAUNCHPAD TMS320F28379D PLATFORM, WITH THE OBJECTIVE OF SUPPORTING DEVELOPERS AND RESEARCHERS IN THE VALIDATION BEFORE THEIR TEST IN GRID-CONNECTED EQUIPMENT. THE PROPOSAL USES THE DIGITAL TO ANALOG OUTPUTS AVAILABLE IN THE LAUNCHPAD TO EMULATE THE GRID VOLTAGE, PROVIDING VARIATIONS IN AMPLITUDE, FREQUENCY, AND PHASE AND AT THE SAME TIME, PROVIDING RELEVANT SIGNALS TO EVALUATE THE PERFORMANCE OF THE TESTED ALGORITHM IN A SCOPE. THE WORK PRESENTS (I) A GLOBAL CLASSIFICATION OF SYNCHRONIZATION TECHNIQUES AND EVALUATION SCENARIOS, (II) THE TOOL CHARACTERISTICS AND ITS IMPLEMENTATION METHODOLOGY, (III) A STUDY CASE AND ITS RESULTS WHERE TWO SYNCHRONIZATION TECHNIQUES ARE IMPLEMENTED IN AN OPEN-SOURCE DEVICE, AND (IV) FINAL DISCUSSIONS OF THE TOOL AND THE RESULT. © 2023 IEEE.

PERSONAL COMFORT SYSTEMS (PCS) ARE EQUIPMENTS THAT HEAT AND/OR COOL OCCUPANTS WITHOUT AFFECTING SURROUNDING ENVIRONMENTS, RANGING FROM COMMONLY USED DEVICES TO INNOVATIVE TECHNOLOGIES, AND THAT TEND TO BE CONTROLLED BY PEOPLE. THESE SYSTEMS AIM TO ADDRESS ENERGY CONSUMPTION AND OCCUPANT SATISFACTION ISSUES RELATED TO CENTRALISED AIR-CONDITIONING. ALTHOUGH THERE ARE SYSTEMATIC STUDIES ON THESE SYSTEMS, THERE IS A LACK OF DOCUMENTATION REGARDING MEDIATION CHARACTERISTICS BETWEEN PEOPLE AND THE BUILT ENVIRONMENT. THIS ARTICLE PRESENTS A SYSTEMATIC REVIEW OF PCS USING A SEARCH OF ACADEMIC LITERATURE AND PATENTS, CLASSIFYING PCS BASED ON THERMAL CATEGORIES AND DEVICE TYPOLOGIES WHILE INTRODUCING POST-PHENOMENOLOGICAL MEDIATION CATEGORIES. THE RESULTS SHOW THAT MOST PCS FALL INTO THE THERMAL CATEGORIES OF

THE THEORY OF PLANNED BEHAVIOR (TPB) HAS BEEN WIDELY USED TO PREDICT BEHAVIORAL INTENTION OF DIFFERENT KINDS. HOWEVER, THERE IS A LACK OF STUDIES THAT HAVE MEASURED THE FACTORIAL STRUCTURE OF THE TPB INSTRUMENT. IN ADDITION, FINDINGS THAT APPLY TO ONE CONTEXT MAY NOT BE APPROPRIATE IN DIFFERENT SETTINGS. THUS, IT IS IMPORTANT TO FOCUS ON MEASUREMENT AND INSTRUMENT DEVELOPMENT ISSUES TO CONTRIBUTE TO THEORY BUILDING. BASED ON A SAMPLE OF 210 MANAGERS/OWNERS OF SMALL AND MEDIUM SIZED BUSINESSES IN CHILE, THIS RESEARCH USES CONFIRMATORY FACTOR ANALYSIS (CFA) AND STRUCTURAL EQUATION MODELING (SEM) TO TEST THE UNDERLYING FACTOR STRUCTURE AND ASSESS RELIABILITY AND VALIDITY OF THE TPB INSTRUMENT. THE RESULTS PROVIDES SUPPORT FOR A REVISED TPB MODEL WHICH EXPLAINS EIGHTY-ONE PERCENT OF THE VARIANCE IN INTENTION BY USING ATTITUDES, SUBJECTIVE NORMS, AND PERCEIVED BEHAVIORAL CONTROL VARIABLES. THUS, THE EVIDENCE SUPPORTS THE USE OF AN ELEVEN-ITEM INSTRUMENT WHEN APPLYING THE TPB IN THIS INTERNATIONAL CONTEXT.

IN THIS PAPER, AN OPERATION SCHEME FOR A SINGLE-PHASE GRID-CONNECTED QUASI-IMPEDANCE SOURCE INVERTER (QZSI) IS PROPOSED. THE PROPOSAL INDICATES THAT, TO ACHIEVE A MORE STABLE OPERATION FOR THE MICROGRIDS, THE QZSI MUST EMULATE THE INERTIA OF A REAL SYNCHRONOUS MACHINE (SM) THROUGH A VIRTUAL SYNCHRONOUS GENERATION (VSG) STRATEGY. THE PROPOSED VSG STRATEGY GENERATES THE SETPOINTS FOR THE AC AND DC SIDES OF THE CONVERTER. THESE REFERENCES ARE TAKEN BY A DIRECT MODEL-BASED PREDICTIVE CONTROL (MPC) SCHEME THAT IS RESPONSIBLE FOR CONTROLLING THE VARIABLES ON BOTH SIDES OF THE INVERTER. FOR IMPLEMENTING THE MPC SCHEME, THE MODEL OF THE QZSI WILL ALLOW PREDICTING THE VARIABLES THAT MUST BE CONTROLLED. SIMULATIONS ARE SHOWN TO DEMONSTRATE THE FEASIBILITY OF THIS PROPOSAL. IN THE SIMULATIONS A DESIRABLE PERFORMANCE OF THE CONVERTER WILL BE OBSERVED, CONTROLLING THE POWER INJECTION TO A SINGLE-PHASE GRID AS IF THIS CONVERTER WERE AN SM.