Figures (3)  Tables (7)

    • Figure 1. 

      2D coordinate framework for PSSD expression.

    • Figure 2. 

      Scatter diagram example of original data for PSSD expression.

    • Figure 3. 

      Fitting curve example for PSSD and individual psychological factors.

    • abcde
      u011111
      u110111
      u200111
      u310101
      u410111
      u610011
      u610011
      u711111

      Table 1. 

      Literature contribution to the PSSD information sets.

    • Type of individual personalityDescriptionTriangular fuzzy interval
      SafeNormal and relaxed conscious state, brisk and calm, positive or intermediate emotion$ \left(5, +{\infty }\right) $
      Non-safeHyper-normal overstress, irritable impatient, negative emotion$ \left(-6, 6\right) $
      UnsafeSubnormal conscious state, insensitive, negative emotion$ \left(-10, -4\right) $
      Highly unsafeUnconscious, flippant, negative emotion$ \left(-{\infty }, -8\right) $

      Table 2. 

      Descriptions and triangular fuzzy intervals for different types of individual personality in PSSD expression.

    • Type of physical conditionDescriptionTriangular fuzzy interval
      SafeAmple sleep, energetic, no sign of fatigue, good psychological condition$ \left(5, +{\infty }\right) $
      Non-safeInsufficient sleep, sign of fatigue, physically unwell$ \left(-6, 6\right) $
      UnsafeInsufficient sleep, drooping spirit, obvious fatigue, physically unpleasant$ \left(-10, -4\right) $
      Highly unsafeSleep extremely insufficient, numbness, severe fatigue, physical impairment$ \left(-{\infty }, -8\right) $

      Table 3. 

      Descriptions and triangular fuzzy intervals for different types of physical conditions in PSSD expression.

    • Type of social influenceDescriptionTriangular fuzzy interval
      SafeGood interpersonal relationships, loving family, amicable group atmosphere, supportive national policy$ \left(5, +{\infty }\right) $
      Non-safeBad interpersonal relationships, unloving family, group atmosphere unkind, unsupportive national policy$ \left(-6, 6\right) $
      UnsafeBad interpersonal relationships, unloving family, group atmosphere strained, unsupportive national policy$ \left(-10, -4\right) $
      Highly unsafeInterpersonal relationships extremely bad, severe family conflict, group atmosphere exceeding unharmonious, forbidding national policy$ \left(-{\infty }, -8\right) $

      Table 4. 

      Descriptions and triangular fuzzy intervals for different types of social influence in PSSD expression.

    • Type of environmental impactDescriptionTriangular fuzzy interval
      ComfortableWorking and living environment perfectly suits ergonomic requirement for comfort$ \left(10, +{\infty }\right) $
      SafeComfortable working environment, good living environment$ \left(5, 10\right) $
      Non-safeBarely comfortable working environment, barely satisfactory living environment$ \left(-6, 6\right) $
      UnsafeUncomfortable working environment, poor living environment$ \left(-10, -4\right) $
      Highly unsafeExtremely unpleasant working environment, exceedingly poor living environment$ \left(-{\infty }, -8\right) $

      Table 5. 

      Descriptions and triangular fuzzy intervals for different types of environmental impact in PSSD expression.

    • Type of PSSDDescriptionTriangular fuzzy
      interval
      Absolutely safeExtremely high safety index$ \left(100, +{\infty }\right) $
      Highly safeVery high safety index$ \left(80, 100\right) $
      SafeHigh safety index$ \left(40, 80\right) $
      Relatively safeRelatively high safety index$ \left(0, 40\right) $
      Relatively unsafeRelatively low safety index$ \left(-40, 0\right) $
      UnsafeLow safety index$ \left(-80, -40\right) $
      Highly unsafeVery low safety index$ \left(-100, -80\right) $
      Absolutely unsafeExtremely low safety index$ \left(-{\infty }, -100\right) $

      Table 6. 

      Descriptions and triangular fuzzy intervals for different types of PSSD.

    • Description2D coordinates
      Conscious, relaxing, cautious, responsible, extroverted, outgoing, positive, quick learning capacity(10, 120)
      Conscious, relaxing, cautious, responsible, introverted, calm, positive, quick learning capacity(9.67, 116.67)
      Conscious, slightly nervous, careless, outgoing, irritable, positive, average learning capacity(1.33, 16.67)
      Conscious, slightly nervous, careless, introverted, insensitive, intermediate mood, average learning capacity(−2.67, −33.33)
      Conscious, hyper-normal stressed, responsible, cautious, introverted, calm, negative, relatively quick learning capacity(−0.67, −16.67)
      Conscious, hyper-normal stressed, careless, outgoing, extroverted, intermediate mood, poor learning capacity(−1.33, −20)
      Fuzzy consciousness, relaxing, responsible, cautious, introverted, calm, intermediate mood, quick learning capacity(−2, −30)
      Fuzzy consciousness, slightly nervous, careless, outgoing, irritable, positive, average learning capacity(−8, −73.33)
      Fuzzy consciousness, hyper-normal stressed, careless, outgoing, extroverted, positive, poor learning capacity(−11.33, −123.33)
      Slack consciousness, relaxed, careless, outgoing, extroverted, intermediate mood, quick learning capacity(2.67, 16)

      Table 7. 

      Part of original data of 2D coordinate points obtained by expert fuzzy evaluation in PSSD expression.