2007, Piran, Slovenia

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Environmental Ergonomics XII Igor B. Mekjavic, Stelios N. Kounalakis & Nigel A.S. Taylor (Eds.), © BIOMED, Ljubljana <strong>2007</strong> the human condition of interest (e.g., comfort in vehicles) and a method of interpretation is required. Examples would include changes in posture, movement patterns (e.g., away from uncomfortable environments), and popularity of sitting positions (e.g., if some seats were in a cold draught they would be occupied ‘last’). Advantages of behavioural methods include minimum interference with what is being measured, and a direct ‘active’ measure of discomfort. Disadvantages include the difficulty in establishing validity and reliability of the method and direct interpretation of the results in terms of comfort. Change in posture could be due to chair discomfort or other ‘non’ reasons. The Standard makes reference to existing standardised methods for the physical assessment of individual aspects of the environment (e.g., ISO-EN-7730), and is not aiming to replace them, but to bring all the techniques together for as a complete assessment tool. Survey design: The design of any environmental survey will depend upon the specific aims of that survey. It is necessary therefore to be specific about the aims of the survey. It will aim to provide general principles that can be used for the assessment of an integrated environment: thermal, lighting, noise, air Quality, and vibration. Subject sampling: A valid method of evaluating environments would be to use a panel of experts. This technique depends upon identifying unbiased acknowledged experts. This is not possible in the area of environmental comfort and the environmental survey design should specifically avoid bias. It is usual to survey all of the occupants of a space, or if that is impractical, then to identify a random sample as representatives of the population of interest. This is a question of statistical sampling and relevant factors such as age, gender, experience, and anthropometry could be identified and influence subject selection. Measurement of Subject Responses: The responses measured will be selected according to the aims of the survey. Typically, subjective responses are taken to quantify comfort. Objective measures are sometimes used, mainly mean skin temperature (and sometimes sweat loss) to complement subjective measures. In a novel situation, subjective scales should be established from first principles by establishing subjective continua using psychological techniques. Subjective scales for assessing environmental comfort have, however, become established. Examples are provided below. It is important to note that the way in which a scale is presented and administered can influence the results. A single sheet questionnaire for example may be preferable to a number of pages. The exact question asked should be established. The frequency of completion of the questionnaire must be balanced with the overall aim of design. Translation of scales, as well as cultural aspects of the subjects will be issues. Knowledge of the previous ratings or of other subjects’ responses is not normally provided. Subject training and pilot trials are necessary. Some scales are used for rating overall and local comfort. Selection of Operating Conditions: It is important to evaluate the environment in the operating conditions of interest. These need to be representative of the conditions that the occupants regularly experience (time of day, correct working procedures, etc.). Subjective scales are provided for the several environmental characteristics (thermal, lighting, noise, air quality), as well as guidance on issues of vibration and social factors. It also utilises expert checklists, to aid the ergonomist to ensure that all the appropriate factors have been considered. The results are used with a scoring system that will enable the ergonomist to determine if there is a specific environmental feature that needs further expert evaluation. 362
Thermal comfort DISCUSSION This new Standard will enable the practising ergonomist to easily establish a complete overview of the physical work environment and to identify areas of concern. Once this has been achieved, they can then seek guidance of the specific environmental expert. REFERENCES ISO CD28802, - Ergonomics of the Physical Environment – The assessment of environments by means of an environmental survey involving physical measurements of the environment and subjective responses of people. ISO, Geneva ISO 7730, Moderate environments - Determination of the PMV and PPD indices and specification of the conditions for comfort. ISO, Geneva. ISO 10551 Ergonomics of the environment-Assessment of the influence of the environment using subjective judgement scales. ISO, Geneva. Wilson, J. and Corlett, N., Eds., (2005) 3rd Edition, Evaluation of Human Work, Chapters 22 and 23. Taylor and Francis. ISBN 0415267579 363
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ENVIRONMENTAL ERGONOMICS XII Procee
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ENVIRONMENTAL ERGONOMICS XII Procee
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International Conferences on Enviro
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TABLE OF CONTENTS Table of contents
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Table of contents ALTITUDE ATTENUAT
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Table of contents TOWARDS PREVENTIO
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Table of contents RATE AFFECT EXERC
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Table of contents Uroš Dobnikar, S
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Table of contents TO A HOT ENVIRONM
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Table of contents Andreas D. Flouri
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Table of contents PHYSICAL FITNESS
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Table of contents ESTIMATION OF THE
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Herman Potocnic Lecture the advanta
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Invited presentation Gravitational
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Gravitational Physiology SKELETAL M
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Lf (mm) 50.0 40.0 30.0 20.0 10.0 Fa
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Gravitational Physiology maximum is
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Gravitational Physiology THERMOREGU
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Gravitational Physiology THE EXERCI
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Gravitational Physiology Since exer
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Gravitational Physiology During the
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Gravitational Physiology CARDIOVASC
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as observed at rest after LBNP was
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Gravitational Physiology THERMOREGU
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Gravitational Physiology THE EFFECT
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Gravitational Physiology Fortney SM
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Gravitational Physiology Contractil
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Gravitational Physiology Edgerton V
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Diving Physiology A library of imag
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Diving Physiology Information recal
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Diving Physiology RESULTS Figure 1
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Diving Physiology sensitivity is no
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Diving Physiology Physiological Mea
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Diving Physiology same sequence. Th
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Diving Physiology HYPERVENTILATION
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Diving Physiology software. Individ
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Diving Physiology REFERENCES IMCA.
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Diving Physiology recorded (MIE Med
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Diving Physiology DISCUSSION The ma
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Altitude Physiology vastus laterali
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Altitude Physiology IS INTERMITTENT
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Altitude Physiology Table 2: Lactat
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Altitude Physiology CARBOHYDRATE IN
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Altitude Physiology Figure 1: Mean
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Altitude Physiology HYPOXIA INDUCED
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Altitude Physiology Figure 1. Mean
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Altitude Physiology ANALYSIS OF MUS
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SOL MG TA BF VM Altitude Physiology
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Altitude Physiology LOAD CARRIAGE I
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Table 2: Differential ratings of pe
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Altitude Physiology EFFECTS OF INTE
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Cerebral deoxy-Hb (delta, µM) Cere
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Altitude Physiology ENDURANCE RESPI
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Altitude Physiology Wylegala JA, Pe
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Invited presentation Cognitive and
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Cognitive and Psycophysiological Fu
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Cognitive and psychophysiological f
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CLOTHING AND TEXTILE SCIENCE 131
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Clothing SPACER FABRICS IN OUTDOOR
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F i / g m -2 4,0 3,5 3,0 2,5 2,0 1,
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Clothing TOTAL EVAPORATIVE RESISTAN
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9,0 8,0 7,0 6,0 5,0 4,0 3,0 2,0 1,0
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Clothing DIFFERENCES IN CLOTHING IN
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Clothing parallel It values ranged
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Clothing CORRELATION BETWEEN SUBJEC
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Clothing and left side chest, scapu
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Clothing studies using an ice vest
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Insulation (Clo) (Clo) Clo / kg 6 5
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Clothing EFFECTS OF MOISTURE TRANSP
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Clothing the P plots above 60%RH (p
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Clothing EFFECT OF CLOTHING INSULAT
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Clothing EFFECTS OF QUILT AND MATTR
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38 33 28 23 18 0 30 60 90 120 150 m
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Clothing German) were measured, and
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Clothing Metabolism decreased and w
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Clothing Table 1. Comparison of ski
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Clothing PHYSIOLOGICAL RESPONSES AT
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Clothing underwear at 25 °C in per
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Clothing REDUCTION OF HEAT STRESS I
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Clothing THE INTERACTION BETWEEN PH
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Relative humidity (%) Clothing Figu
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Clothing DEVELOPMENT OF THE “WEAR
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Clothing EFFECTS OF AIR GAPS UNDER
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Temper at ur e( ˇ ć) 28.5 27.5 26
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Personal protective equipment Invit
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Personal protective equipment fabri
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Personal protective equipment PHYSI
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Mean skin temperature (ºC) 38.0 37
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Personal protective equipment the S
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Personal protective equipment DISCU
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Personal protective equipment Final
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Personal protective equipment REFER
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Personal protective equipment Tc wa
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Personal protective equipment level
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F i / g m -2 300 250 200 150 100 50
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h M / % 90 80 70 60 50 40 activity
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Personal protective equipment 0.05
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Personal protective equipment was u
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Personal protective equipment THERM
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Personal protective equipment the s
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Personal protective equipment the c
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Personal protective equipment wette
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Table 1 1. Properties of the tested
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Personal protective equipment HEAT
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Personal protective equipment Profi
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Personal protective equipment PHYSI
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Personal protective equipment REDUC
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39.0 38.5 38.0 37.5 37.0 36.5 40.0
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Personal protective equipment EXERC
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Personal protective equipment appro
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Personal protective equipment Table
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Personal protective equipment reduc
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Invited presentation Non-thermal fa
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Non-thermal factors heat loss by al
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Non-thermal factors DOES A FATIGUE-
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Non-thermal factors cycling, despit
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Non-thermal factors INDIVIDUAL VARI
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Non-thermal factors to some categor
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Non-thermal factors RATES OF TOTAL
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Non-thermal factors CHANGES IN BLOO
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Non-thermal factors Table 1. Thresh
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Non-thermal factors THE DIFFERENCE
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Water intake(g) 2000 1800 1600 1400
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Non-thermal factors IMPROVED FLUID
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Non-thermal factors A tendency for
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Sweating Table 1: Sweat gland count
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Sweating Taylor, N.A.S. (2000). Reg
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Sweating back/waist area and finall
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Figure 1: A chrome dome following p
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Sweating Such differences could be
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Sweating the forearm and thigh skin
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Sweating dramatically after puberty
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Sweating In addition local sweating
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Sweating REGIONAL FOOT SWEAT RATES
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Sweating REGIONAL SWEAT RATES OF TH
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Sweating Figure 2 shows the skin te
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Sweating SWEATY HANDS: DIFFERENCES
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Sweating Figure 2: Inter-site sweat
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Sweating REGIONAL DIFFERENCES IN TO
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Sweating Figure 2: Inter-site sweat
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Sweating MENSTRUAL CYCLE DOES NOT A
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Sweating RESULTS On average, the ma
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Sweating THE SWEAT SECRETION AND SO
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Sweating Figure 1: A quadrant diagr
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Invited presentation FINGER COLD IN
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Cold physiology INTRA-INDIVIDUAL DI
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Cold physiology number was estimate
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Page 313 and 314: Cold physiology EFFECT OF URAPIDIL
Page 315 and 316: Cold physiology THE EFFECT OF EXERC
Page 317 and 318: TRAINABILITY OF COLD INDUCED VASODI
Page 319 and 320: Cold physiology REFERENCES Adams, T
Page 321 and 322: Cold physiology THE EFFECT OF REPEA
Page 323 and 324: Cold physiology THE EFFECT OF ALTIT
Page 325 and 326: Cold physiology SKIN SURFACE MENTHO
Page 327 and 328: Cold physiology COGNITIVE PERFORMAN
Page 329 and 330: Seconds 6.5 6.0 5.5 5.0 4.5 4.0 3.5
Page 331 and 332: Cold water immersion REFERENCES Mek
Page 333 and 334: Cold water immersion the formula: M
Page 335 and 336: Cold water immersion REFERENCES Cho
Page 337 and 338: Cold water immersion were: 1 metre
Page 339 and 340: Cold water immersion surf beaches.
Page 341 and 342: Cold water immersion Table 1. Break
Page 343 and 344: Cold water immersion ARM INSULATION
Page 345 and 346: Cold water immersion RESULTS Experi
Page 347 and 348: Cold water immersion thermogenesis
Page 349 and 350: Cold water immersion The other comp
Page 351 and 352: Cold water immersion REFERENCES And
Page 353 and 354: Thermal comfort THERMAL SENSATIONS
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Page 357 and 358: Thermal comfort and heart rate usin
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Page 365 and 366: Thermal comfort limit of exposure d
Page 367 and 368: Table 2: Statistical summary. Gende
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Page 371 and 372: Thermal comfort RELATION BETWEEN TH
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Page 375 and 376: Thermal comfort THE EVALUATION OF T
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Page 379 and 380: time(min) Thermal comfort WHY DO JA
Page 381 and 382: Thermal comfort TCT : THERMAL COMFO
Page 383 and 384: Thermal comfort INTERNATIONAL STAND
Page 385 and 386: Acute and chronic heat exposure PHY
Page 387 and 388: Acute and chronic heat exposure Fig
Page 389 and 390: Acute and chronic heat exposure EFF
Page 391 and 392: Acute and chronic heat exposure 2.2
Page 393 and 394: Acute and chronic heat exposure EFF
Page 395 and 396: Acute and chronic heat exposure A N
Page 397 and 398: Acute and chronic heat exposure of
Page 399 and 400: Acute and chronic heat exposure PHY
Page 401 and 402: Acute and chronic heat exposure Tab
Page 403 and 404: Acute and chronic heat exposure INT
Page 405 and 406: probability plot 99 95 80 60 40 20
Page 407 and 408: Acute and chronic heat exposure HAN
Page 409 and 410: Acute and chronic heat exposure ALL
Page 411 and 412: Acute and chronic heat exposure Tab
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Acute and chronic heat exposure UNC
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Thermal Sensation Scale 10 9 8 7 6
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Acute and chronic heat exposure RES
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Acute and chronic heat exposure eve
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Acute and chronic heat exposure 30%
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Acute and chronic heat exposure REF
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RADIANT FLOW THROUGH BICYCLE HELMET
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Figure 2. Difference in heat transf
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Manikins DEVELOPMENT OF A LYING DOW
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IT = 6.45( _ ,Tsk - _ ,Tair)/(Q/A)
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Manikins cases. If the body is even
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Heat balance components 100% 80% 60
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Manikins clothing system. This effe
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Manikins The coupled system was val
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Manikins A NOVEL APPROACH TO MODEL-
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Manikins THERMAL MANIKIN EVALUATION
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SR (g/min) Figure 2. Predictive mod
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ESTIMATION OF COOLING EFFECT OF ICE
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Manikins Figure 3: Comparison among
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Manikins EVALUATION OF THE ARMY BOO
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Ty [Nm] 60 50 40 30 20 10 0 0 5 10
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Manikins different black 100% cotto
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Manikins REFERENCES Bogerd, C.P., H
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Modelling RESULTS From this kind of
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Modelling (T , T , V& , ) = 1. 0 +
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NORMALIZED CVCL 8 7 6 5 4 3 2 1 0 M
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Modelling illustrated in Figure 1.
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Modelling MODELLING PATIENT TEMPERA
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Modelling Figure 1: Blood and mean
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Modelling simulations the additiona
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Modelling Table 1. Descriptive summ
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Modelling concomitant increase in b
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Modelling REFERENCES 1. U.S. Depart
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Modelling from the 1988 population.
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Modelling somatotypes in multivaria
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Modelling Each scan data was first
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Modelling The line through the data
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Hip( width) −Waist ( width ) HW
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Modelling measurements are extracte
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Measurement methods not included in
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Measurement methods humidity. The o
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Measurement methods DISCUSSION Base
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Air film Skin surface Skin layer δ
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Measurement methods and calculated
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Rectal temperature ( o C) 39.5 39.0
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Measurement methods work rates, and
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Measurement methods HUMIDEX: CAN TH
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Measurement methods highlighted. In
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Invited presentation Universal Ther
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Universal Thermal Climate Index dat
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Universal Thermal Climate Index DYN
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Universal Thermal Climate Index DIS
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Universal Thermal Climate Index COM
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Skin temperature (°C) Universal Th
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Universal Thermal Climate Index PRO
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Universal Thermal Climate Index The
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Universal Thermal Climate Index ASS
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Universal Thermal Climate Index ima
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Universal Thermal Climate Index min
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Working environment EFFECTS OF LIGH
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Working environment It is interesti
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30 25 20 15 10 5 0 25 12 Working en
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Working environment ERGONOMICS OPTI
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Working environment astigmatism, an
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Working environment RESULTS The hig
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Working environment hearing protect
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Working environment Redistribution
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Working environment DISCUSSION Thes
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Working Environment over the phone
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Working Environment DISCUSSION Diff
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Working Environment results, conclu
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Working Environment BP as the refer
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Working Environment significantly a
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Working Environment responses betwe
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Working Environment Casualty handli
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Working Environment REFERENCES Davi
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Working Environment RESULTS The sub
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Temperature (C) 35 33 31 29 27 25 2
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Working Environment METHODS Student
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Working Environment ANTHROPOGENIC I
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Working Environment RESULTS The res
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Employment Standards VISUAL ACUITY
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Employment Standards Results are pr
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Employment Standards to spend free
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Occupational Thermal Problems and d
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Occupational Thermal Problems HEAT
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Occupational Thermal Problems some
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Occupational Thermal Problems HORSE
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Occupational Thermal Problems range
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Occupational Thermal Problems PHYSI
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Occupational Thermal Problems DISCU
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Occupational Thermal Problems recom
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DLEmin [hours] 7,0 6,0 5,0 4,0 3,0
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Occupational Thermal Problems EFFEC
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Occupational Thermal Problems PERIP
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Occupational Thermal Problems durin
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Occupational Thermal Problems PRODU
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Time (hours) 4 3,5 3 2,5 2 1,5 1 0,
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Occupational Thermal Problems (Suun
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Occupational Thermal Problems highl
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Occupational Thermal Problems and o
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1) estimated (208 - 0.7 x age) *P
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Occupational Thermal Problems of a
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Occupational Thermal Problems tempe
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Table 1: Environmental conditions o
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Occupational Thermal Problems The h
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Occupational Thermal Problems RESUL
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Occupational Thermal Problems PHYSI
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Occupational Thermal Problems corre
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Occupational Thermal Problems DEVEL
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Occupational Thermal Problems All i
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A Adolfsson Niklas 540 Ainslie Phil
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Kim Myung-Ju 409 Kim Taegyou 189 Kl
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Sormunen Erja 599 Spindler Uli 145
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