Numerical analysis of the interaction between rockbolts and rock mass for coal mine drifts in Vietnam

The thesis describes the application of anchors in mining and tunneling and gives an up-to-date overview about anchor types, design principles and the interaction mechanisms between anchors and rockmass. A constitutive model was developed, implemented and tested for the 2- and 3-dimensional numerical codes FLAC and FLAC3D to simulate non-linear anchor behaviour including unloading and reloading. The interaction between rockbolts and rockmass was studied in detail via numerical simulations for 5 Vietnamese coal mines. An extended version of the so-called c-Φ reduction method and a new introduced reinforcement factor were applied to quantify the effect of bolting. Mine specific and generalised relations were deduced to quantify the influence of anchor length and distance between anchors on the effect of bolting

The role of attitude, preference conflict, norms, and family identity in explaining intention/behavior toward fish consumption in Vietnamese families

The main objective of the thesis is to explore and test the roles of attitude, preference conflict, norms and family identity in explaining intention/behavior toward fish consumption in Vietnamese families. This study utilizes a theoretical framework based on the Theory of Planned Behavior, but more focused on some other variables (ambivalence, family conflict and identity) in an extended model. The study reveals that attitude, family conflict, and family identity influence intention, while family norms factor do not exhibit a direct relationship with the intention to consume fish in Vietnam. In addition, ambivalence was negatively correlated with attitude, while interpersonal conflict was unrelated to attitude. Moreover, although social variables seem to be of vital importance in predicting attitude, only family identity and attitude enjoy positive correlation with high statistical significance. Family norms have a low impact on attitude while family conflict has no significance in predicting attitude towards fish. Also, family norm and family conflicts were mutually related. Further, the result does not support the hypothesis that family identity represents a moderator in the family norm-intention relationship. Finally, intention to eat fish is highly positively correlated to behavior to consume. However, there is no direct relationship between family identity and fish consumption behavior. The results of this study will shed some light on discovering the role of attitude, preference conflict, family norms, and family identity in explaining intention/behavior toward fish consumption in Vietnamese families. It will allow academics to better understand the complication of social variables and further develop future research in this area. Keywords: Fish consumption; attitude; preference conflict; ambivalence; family norms; family identity

Latest Analysis: Innovative Strategies to Improve Public Health and Prevent Chronic Diseases

This research aims to investigate the positive effect of a healthy lifestyle on the mental and bodily fitness of the community. Utilizing an interdisciplinary method, the study entails an in-intensity evaluation of the connection between wholesome ingesting styles, normal physical activity, and pressure control on the mental nicely-being and bodily condition of people. The studies method consists of a extensive survey to acquire data from diverse age businesses and backgrounds. Additionally, a complete literature assessment is employed to construct a conceptual framework supporting the studies findings. The results of this look at are predicted to provide new insights into revolutionary strategies for improving public fitness and preventing persistent diseases. In this context, the research not most effective identifies healthy practices which have the ability to increase lifespan and enhance great of existence but also offers concrete pointers for the implementation of public fitness rules that specialize in promoting a healthy lifestyle. The practical implications of those findings are predicted to significantly make contributions to the development of the healthcare machine and normal network properly-being

A formula of evaluating structural safety based on fuzzy set theory

This article presents an approach to assess safety levels of structures. A new formula for determining the fuzzy reliability of structures is proposed for the case where the set of loading effect and set of structural durability are general fuzzy sets. Illustration example concerning the bending strength evaluation of a simple-beam structure, is presented with the choice of triangular fuzzy sets for loading effect and structural durability