This article proposes a mental health education model for college students based on non-linear finite element equations and explores the concepts, content, methods and approaches for mental health education. After analysing college students’ psychological behaviours, the study is based on stressors and stress response models. It specifically explores the psychological and behavioural manifestations of college students with four different attachment types. The research provides a preliminary theoretical basis for the mechanism of the psychological and physical health of college students.

#### Keywords

- college students
- non-linear finite element
- psychological education
- stress response
- response model

#### MSC 2010

- 34A34

In 1936, Seley used the classic conditioned reflex ‘stimulus–response’ model to explore multiple psychosomatic disorders and created a new stress model. This is the stressor–stress response–result model. Later, cognitive psychology research added a ‘cognitive evaluation’ medium between the stressor and the stress response to improve the stress model gradually. Many physiologists and psychologists have conducted different levels of research on stress mechanisms. Some scholars have explored the harmful effects of stress on individuals’ brains.

Over the years, domestic and foreign scholars have studied the multiple factors behind suicide and the inclination to suicide from different perspectives [1]. But the idea of light business before suicide has become a new bright spot for discussion and early warning. How to warn of the idea of light business is of great significance to prevent suicidal impulses and suicidal behaviour. Minor business ambitions are often secondary to depressive symptoms. Many life stress factors often induce the symptoms of depression and the idea of neglecting business. However, domestic research uses the ‘Student Life Stress Inventory’ (SLSI) questionnaire proposed by Gadzella to explore undergraduates’ thoughts about business and suicidal tendencies. This study mainly discusses the early-warning stress model of college students’ life stressors and stress responses that induce their depressive symptoms and then induce their light business desires. The research theory provides a basis and reference for crisis psychological intervention of college students.

The data comes from the psychological health survey of college students in the second half of 2.19. The total sample consists of 3558 cases. Among them, 2287 cases (64.3%) are males, and 1271 cases (35.7%) are females. Their ages ranged from 16 to 25 years (average age: 19.5 years).

We use the ‘College Student Personality Inventory’ (University Personality Inventory [UPI]) revised by Professor Fan Fumin of Tsinghua University as the testing tool. The scale consists of 60 items. This includes four false tests and 56 symptoms [2]. All items are 0/1 binary variables. The test items are symptoms that occurred within 1 year. These include the ‘depressive symptoms’ factor and the ‘light business mind’ project. Reliability test of the scale showed that Cronbach’s

The paper uses the SLSI compiled by Gadzella, which uses the revised scale to detect 51 life stresses of college students in the past 3 months. All items have a five-point value (‘1’ means none, ‘2’ means rarely, ‘3’ means occasionally, ‘4’ means often and ‘5’ means always). The scale is divided into two categories comprising nine factors. The five stressors include frustration, conflict, stress, change and self-imposition. The four factors of the stress response are physiological response, emotional response, behavioural response and cognitive response. The reliability of the original scale shows a value of Cronbach’s

We perform regression analysis using the Statistical Package for the Social Sciences software version 13 (SPSS13.0) to fit the early-warning model. The article uses Amos4.0 structural analysis to fit the structural equation model and analyses the direct and indirect influence paths. The balanced equation of the non-linear finite element system is as follows:

Here, _{e}

The equivalent nodal forces

The equivalent nodal force ^{0} given by the iteration be closer to the proper solution to ensure that the iterative solution sequence converges to the proper solution. We introduce the load parameter

Usually, the parameter

Here, _{m}_{+1} under _{m}_{+1} for each increment Δ_{m}

Here, _{ep}_{m}_{+1} in the incremental step Δ_{M}

We used SLSI five-factor life stressor and four-factor stress response as independent variables and UPI depression symptoms as dependent variables for multiple linear stepwise regression analysis. Two early-warning models were established based on the statistically significant (

1) The life stressor factors that induce depressive symptoms include frustration, stress, change and self-imposition (with conflict factors being excluded). Beta coefficient shows that frustration has the top influence on depressive symptoms.

2) The stress response factors that induce depressive symptoms are emotional response, behavioural response, physiological response and cognitive response. Beta coefficient shows that emotional response has a more significant impact on depression symptoms [5]. The two early-warning models were tested for variance, and we found that the goodness of fit was relatively high (

Multivariate linear regression early-warning model of depressive symptoms induced by the life stressors and stress response factors of college students

(Constant) | −3.005 | 0.215 | −13.949 | 0 | |||

Frustration | 0.147 | 0.011 | 0.248 | 13.32 | 0 | ||

Pressure | 0.133 | 0.015 | 0.164 | 8.694 | 0 | ||

Variety | 0.117 | 0.02 | 0.103 | 5.862 | 0 | ||

Self-reinforcing | 0.061 | 0.012 | 0.087 | 5.2 | 0 | ||

(Constant) | −1.677 | 0.178 | −9.442 | 0 | |||

Emotional response | 0.219 | 0.014 | 0.301 | 15.203 | 0 | ||

Behavioural response | 0.086 | 0.012 | 0.139 | 7.248 | 0 | ||

Physiological response | 0.044 | 0.007 | 0.115 | 6.119 | 0 | ||

Cognitive response | 0.075 | 0.018 | 0.062 | 4.132 | 0 |

We use UPI light business mindfulness (‘0’: None/’1’: Yes) as the dependent variable and depressive symptoms as the covariate to conduct binary logistic regression analysis. The results showed that depressive symptoms significantly affected light business thoughts (

Binary logistic regression early warning of undergraduates’ depressive symptoms

^{2} |
|||||||
---|---|---|---|---|---|---|---|

Depressive symptoms | 0.620 | 0.042 | 218.629 | 1 | 0 | 1.859 | |

Constant | −6.196 | 0.274 | 511.626 | 1 | 0 | 0.002 | |

Depressive symptoms | 0.613 | 0.053 | 135.819 | 1 | 0 | 1.847 | |

Constant | −6.000 | 0.326 | 338.554 | 1 | 0 | 0.002 | |

Depressive symptoms | 0.681 | 0.076 | 80.626 | 1 | 0 | 1.975 | |

Constant | −6.907 | 0.548 | 158.621 | 1 | 0 | 0.001 |

Classification matrix and probability of undergraduates’ depressive symptoms for predicting light business intentions

3414 | 11 | 99.7 | |

97 | 20 | 17.1 | |

– | – | 97 |

We have planned a path analysis of the stress process (stressor → stress response) of college students that induces depressive symptoms and then produces light business thoughts. The results fit two structural equation models. The significance test found that the goodness of fit of each model was high (

Structural equation model fitting test of undergraduates’ life stressor-induced depressive symptoms and light business thoughts

^{2} |
df | CMIN/df | GFI | AGFI | RMSEA | ||

142.061 | 21 | 0 | 6.765 | 0.992 | 0.979 | 0.041 | |

204.93 | 24 | 0 | 8.539 | 0.988 | 0.973 | 0.047 |

AGFI, adjusted goodness-of-fit index; CMIN/df, minimum discrepancy per degree of freedom; GFI, goodness-of-fit index; RMSEA, root mean square error of approximation.

Structural equation Model 2 fits and produces corresponding analysis results of the direct and indirect effects of various factors in the stress process of college students on depressive symptoms and negligence in business [8]. Table 5 shows that the direct influence of the stressor on the stress response is 0.829. The indirect effect of the stress response on depressive symptoms is 0.465. The indirect effect of stress response and depressive symptoms on light business thoughts is 0.145. The direct impact of the stress response on depressive symptoms is 0.562. The indirect effect of depressive symptoms on light business ideology is 0.174. Finally, the effect of the depressive symptoms induced indirectly by the stressor and directly induced by the stress response on the light business idea is 0.311 (Table 5).

The direct and indirect influence coefficients of various factors inducing depressive symptoms and negligence in business in the stress process of college students

0.711 | 0 | 0 | |

0.811 | 0 | 0 | |

0.617 | 0 | 0 | |

0.494 | 0 | 0 | |

0 | 0.699 | 0 | |

0 | 0.811 | 0 | |

0 | 0.7 | 0 | |

0 | 0.034 | 0 | |

0.829 | 0 | 0 | |

0 | 0.562 | 0 | |

0 | 0 | 0.311 | |

0 | 0 | 0 | |

0 | 0 | 0 | |

0 | 0 | 0 | |

0 | 0 | 0 | |

0.579 | 0 | 0 | |

0.672 | 0 | 0 | |

0.58 | 0 | 0 | |

0.028 | 0 | 0 | |

0 | 0 | 0 | |

0.465 | 0 | 0 | |

0.145 | 0.174 | 0 |

The life stressors that indirectly induce depressive symptoms in college students come from frustration, pressure, change and self-imposition. According to the factor items of the SLSI scale designed by Gadzella, students’ ‘frustration’ factors come from seven aspects, such as delay in reaching, being often disturbed and hence not reaching the goal, frustration due to lack of financial resources, failure to achieve the goal, rejection by society or others, rejection of heterosexual friendship and rejection of opportunities for qualified ability. The student ‘stress’ factor comes from four aspects: professional competition pressure, academic burden pressure, friend competition pressure and family expectation pressure. The student ‘change’ factor comes from three aspects: sudden unpleasant changes, facing too many life changes simultaneously and changes that affect the life or hinder achievement of goals. Students’ ‘self-imposition’ factors come from six aspects, such as excessive self-expectations, desire to be loved by everyone, excessive worry about anyone and everything, anxiety for the pursuit of high test scores and the need to solve the problems facing them perfectly [9]. These four factors are all significant triggers of depressive symptoms. However, the students’ inner ‘conflict’ factor did not have a significant effect on the depression symptoms. The above analysis shows that the stressor of depression symptoms in college students mainly comes from environmental or exogenous factors. Even though endogenous factors – as the significant inducers of depression symptoms – are self-imposed, they are expressed through the described external objects. As for the endogenous conflict factors, the brain is often in a state of active excitement due to motivational struggles and unresolved conflicts, so it does not form a state of depression. This empirical analysis shows that the external environmental stimulus of the behavioural response has a more significant impact on depressive symptoms. In comparison, the inner conflict of psychoanalysis has a lesser impact on depressive symptoms.

The stress response that directly induces depression symptoms in college students comes from the following: emotional response, physiological response and behavioural response. This is mainly because depressive symptoms comprise a mood disorder [10]. Frustration, stress, changes and self-imposition life stressors can all cause abnormal emotional reactions. Emotional abnormal reactions will affect autonomic nervous and visceral activities and cause endocrine changes through the emotional centre, namely the hypothalamus. The onset of depressive symptoms is directly related to the direct induction of these comprehensive stress responses.

The stress process in college students (stressor–stress response) indirectly induces light business thoughts through depressive symptoms. This study shows that life stressors have a minimal direct impact on the idea of light business [11]. As a source of frustration, pressure, change and self-imposed stress, stress does not directly induce depressive thoughts but induces depressive symptoms through the induced stress response and indirectly triggers depressive thoughts. This path model reveals that light business thoughts and even suicidal behaviours often arise in depressed people under high stress in real life. Depressive symptoms are intermediaries through which stress triggers light business thoughts and even suicidal behaviour. The reason is that patients with depressive symptoms are easily susceptible to suicide.

Crisis psychology, such as light business thoughts, can be detected and intervention can be provided fruitfully. Some scholars have found that young people’s suicide is not an act of thinking and impulsiveness. It usually occurs in the final stage of internal chaos and external pain. Most young suicide victims talked about or wrote about suicidal intentions before committing suicide. This shows that suicide can be analysed and predicted through observation and psychological tests. Among these indicators, the light business intention is an early warning signal. To warn college students of their weak business minds, we need to detect the life stressor or psychological load they bear and diagnose whether they suffer from depressive symptoms, so that we can provide timely psychological diagnosis and early warning, effective psychological counselling and treatment and active social support and assistance, along with the application of psychotropic medication. These are all means to implement crisis interventions for light business ideas induced by depressive symptoms.

#### Binary logistic regression early warning of undergraduates’ depressive symptoms

^{2} |
|||||||
---|---|---|---|---|---|---|---|

Depressive symptoms | 0.620 | 0.042 | 218.629 | 1 | 0 | 1.859 | |

Constant | −6.196 | 0.274 | 511.626 | 1 | 0 | 0.002 | |

Depressive symptoms | 0.613 | 0.053 | 135.819 | 1 | 0 | 1.847 | |

Constant | −6.000 | 0.326 | 338.554 | 1 | 0 | 0.002 | |

Depressive symptoms | 0.681 | 0.076 | 80.626 | 1 | 0 | 1.975 | |

Constant | −6.907 | 0.548 | 158.621 | 1 | 0 | 0.001 |

#### Classification matrix and probability of undergraduates’ depressive symptoms for predicting light business intentions

3414 | 11 | 99.7 | |

97 | 20 | 17.1 | |

– | – | 97 |

#### Multivariate linear regression early-warning model of depressive symptoms induced by the life stressors and stress response factors of college students

(Constant) | −3.005 | 0.215 | −13.949 | 0 | |||

Frustration | 0.147 | 0.011 | 0.248 | 13.32 | 0 | ||

Pressure | 0.133 | 0.015 | 0.164 | 8.694 | 0 | ||

Variety | 0.117 | 0.02 | 0.103 | 5.862 | 0 | ||

Self-reinforcing | 0.061 | 0.012 | 0.087 | 5.2 | 0 | ||

(Constant) | −1.677 | 0.178 | −9.442 | 0 | |||

Emotional response | 0.219 | 0.014 | 0.301 | 15.203 | 0 | ||

Behavioural response | 0.086 | 0.012 | 0.139 | 7.248 | 0 | ||

Physiological response | 0.044 | 0.007 | 0.115 | 6.119 | 0 | ||

Cognitive response | 0.075 | 0.018 | 0.062 | 4.132 | 0 |

#### The direct and indirect influence coefficients of various factors inducing depressive symptoms and negligence in business in the stress process of college students

0.711 | 0 | 0 | |

0.811 | 0 | 0 | |

0.617 | 0 | 0 | |

0.494 | 0 | 0 | |

0 | 0.699 | 0 | |

0 | 0.811 | 0 | |

0 | 0.7 | 0 | |

0 | 0.034 | 0 | |

0.829 | 0 | 0 | |

0 | 0.562 | 0 | |

0 | 0 | 0.311 | |

0 | 0 | 0 | |

0 | 0 | 0 | |

0 | 0 | 0 | |

0 | 0 | 0 | |

0.579 | 0 | 0 | |

0.672 | 0 | 0 | |

0.58 | 0 | 0 | |

0.028 | 0 | 0 | |

0 | 0 | 0 | |

0.465 | 0 | 0 | |

0.145 | 0.174 | 0 |

#### Structural equation model fitting test of undergraduates’ life stressor-induced depressive symptoms and light business thoughts

^{2} |
df | CMIN/df | GFI | AGFI | RMSEA | ||

142.061 | 21 | 0 | 6.765 | 0.992 | 0.979 | 0.041 | |

204.93 | 24 | 0 | 8.539 | 0.988 | 0.973 | 0.047 |

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