The existing theoretical research on PSO focuses on the issues like stability, convergence, and explosion of the swarm.
1) In terms of research method, the assumptions in existing theoretical research do not coincide with the current national situation due to differences in Chinese and foreign issuing systems.
Existing theoretical research on HIV-related stigma also highlights how various aspects of stigma negatively impact on healthcare access, and health outcomes [ 7, 8], and is associated with stress, depression, and lower perceived quality of life among people living with HIV [ 9].
Taking the four-aspect fixed autoblock system as research object, this work proposes the cellular automata model of the fixed autoblock system based on existing theoretical researches through the analytical study of classical cellular automata model.
Second, the design principles were built on existing theoretical and empirical research literatures.
The existing (theoretical) ethical concepts about research were studied using ETHX on the web, Philosopher's Index and Bioethics Line.
Possibly, the implementation of already existing theoretical conceptions into the research practice of empirical medical ethics may be even more desirable at this point than an extension of the spectrum of different approaches to normative-empirical collaboration.
In the case of the social determinants of health, an evidence-based approach to policymaking and to policy appraisal may however require drawing as much upon existing theoretical frameworks as upon research evidence about the effects of interventions [ 32- 36].
Bearing in mind, on the one hand, ethical and logistical constraints, and on the other, the extent to which staff performance depends on material and organizational resources [ 47, 48], existing theoretical models and robust research designs should, with valid instruments, make it possible to evaluate and analyse the executive competence of EmOC personnel.
We subsequently confronted these experiences with existing theoretical ethical concepts about (pediatric) research, namely goals of research, informed consent, best interests, equipoise and therapeutic misconception.
An empirical ethical approach, combining (1) a narrative review of (primarily) qualitative studies on parents' and physicians' experiences of the pediatric oncology research practice, and (2) comparison of these experiences with existing theoretical ethical concepts about (pediatric) research.
