In this paper, we propose a discrete ratio-dependent predator-prey system. The stability of the fixed points of this model is studied. At the same time, it is shown that the discrete model undergoes fold bifurcation a...In this paper, we propose a discrete ratio-dependent predator-prey system. The stability of the fixed points of this model is studied. At the same time, it is shown that the discrete model undergoes fold bifurcation and flip bifurcation by using bifurcation theory and the method of approximation by a flow. Numerical simulations are presented not only to demonstrate the consistence with our theoretical analyses, but also to exhibit the complex dynamical behaviors, such as the cascade of period-doubling bifurcation in period-2 and the chaotic sets. The Maximum Lyapunov exponents are numerically computed to confirm further the complexity of the dynamical behaviors. These results show that the direct discrete method has more rich dynamic behaviors than the discrete model obtained by Euler method.展开更多
Objective:Pediatric cancer patients endure multiple symptoms during treatment and also in survivorship.Digital health technologies provide an innovative way to support their symptom management.This review aimed to exa...Objective:Pediatric cancer patients endure multiple symptoms during treatment and also in survivorship.Digital health technologies provide an innovative way to support their symptom management.This review aimed to examine the effect of digital health technologies on managing symptoms among across pediatric cancer continuum.Methods:A systematic literature search of six English and three Chinese electronic databases was combined with hand searching,to identify eligible research studies from database establishment to November 30,2019.Two reviewers carried out data selection,data extraction,and quality appraisal independently.A narrative approach was taken to summarize data.Results:Four randomized control trials,two quasi-experiments,and five one group pre-posttest designed studies,were included in the review with a total of 425 participants.The methodological quality of the studies was generally fair.Seven symptoms(anxiety,depression,pain,anger,fatigue,fear,distress)and seven digital health technologies(visual reality,website,humanoid robot,app,wearable devices,short messages and videoconference)were reported in the included studies.Conclusions:Current evidence supports the effect of digital health technologies is generally mixed and inconclusive.There is a trend of positive effects found in the interventions that feature digital health technologies’interactive function.This review highlights the need for further investigation with rigorous research designs and the consideration of influencing factors from the symptoms,participants,and context levels to inform a better digital health implementation.展开更多
Objective:Unmet supportive care needs(SCNs)impact pediatric cancer patients and their parents.This study aimed to explore the unmet SCNs from the perspective of Chinese children with cancer and their parents through l...Objective:Unmet supportive care needs(SCNs)impact pediatric cancer patients and their parents.This study aimed to explore the unmet SCNs from the perspective of Chinese children with cancer and their parents through lived experiences.Methods:The data of this study was collected using face-to-face semi-structured interviews.The participants were recruited from the oncology units of three children’s hospitals in China’s cities(Shanghai,Guangzhou,and Hefei)from October 2020 to December 2021.Data were analyzed using Colaizzi’s sevenstep phenomenological analysis method.Results:Eight pediatric cancer patients and twenty-four parents were enrolled in the study.Four main themes and eight subthemes(both children’s and parent’s perspectives)were generated:1)meeting the ongoing needs along the cancer trajectory(can you tell me what comes next;our needs are growing);2)communicating with a family focus(they only talk to my parents;let each family member have a voice);3)providing care beyond the treatment(I am bigger than my body[the children’s needs for emotional consolidation and information about their prognosis];there are things beyond treatment);4)getting support from the community(I am not a monster[the children were unhappy about being treated differently];we want to connect with the resources near us).Conclusion:This study revealed multiple unmet SCNs from the perspective of Chinese children with cancer and their parents.The findings call for comprehensive and in-depth supportive care beyond treatment,integration of the family member voice in pediatric cancer care,and a coordinated pediatric cancer support mechanism in the Chinese healthcare system.展开更多
文摘In this paper, we propose a discrete ratio-dependent predator-prey system. The stability of the fixed points of this model is studied. At the same time, it is shown that the discrete model undergoes fold bifurcation and flip bifurcation by using bifurcation theory and the method of approximation by a flow. Numerical simulations are presented not only to demonstrate the consistence with our theoretical analyses, but also to exhibit the complex dynamical behaviors, such as the cascade of period-doubling bifurcation in period-2 and the chaotic sets. The Maximum Lyapunov exponents are numerically computed to confirm further the complexity of the dynamical behaviors. These results show that the direct discrete method has more rich dynamic behaviors than the discrete model obtained by Euler method.
基金supported by the China National Natural Science Foundation of China Youth Science Foundation(71904030)Shanghai Pujiang Talent Program(2019PJC006).
文摘Objective:Pediatric cancer patients endure multiple symptoms during treatment and also in survivorship.Digital health technologies provide an innovative way to support their symptom management.This review aimed to examine the effect of digital health technologies on managing symptoms among across pediatric cancer continuum.Methods:A systematic literature search of six English and three Chinese electronic databases was combined with hand searching,to identify eligible research studies from database establishment to November 30,2019.Two reviewers carried out data selection,data extraction,and quality appraisal independently.A narrative approach was taken to summarize data.Results:Four randomized control trials,two quasi-experiments,and five one group pre-posttest designed studies,were included in the review with a total of 425 participants.The methodological quality of the studies was generally fair.Seven symptoms(anxiety,depression,pain,anger,fatigue,fear,distress)and seven digital health technologies(visual reality,website,humanoid robot,app,wearable devices,short messages and videoconference)were reported in the included studies.Conclusions:Current evidence supports the effect of digital health technologies is generally mixed and inconclusive.There is a trend of positive effects found in the interventions that feature digital health technologies’interactive function.This review highlights the need for further investigation with rigorous research designs and the consideration of influencing factors from the symptoms,participants,and context levels to inform a better digital health implementation.
基金This study was supported by the China National Natural Science Foundation of China Youth Science Foundation (71904030)China Medical Board Open Competition Grant (#21-427)+1 种基金Taikang Yicai Public Welfare Foundation (ZXJJ-YCGW-2021009)Fudan Nursing Founding (FNF 202124).
文摘Objective:Unmet supportive care needs(SCNs)impact pediatric cancer patients and their parents.This study aimed to explore the unmet SCNs from the perspective of Chinese children with cancer and their parents through lived experiences.Methods:The data of this study was collected using face-to-face semi-structured interviews.The participants were recruited from the oncology units of three children’s hospitals in China’s cities(Shanghai,Guangzhou,and Hefei)from October 2020 to December 2021.Data were analyzed using Colaizzi’s sevenstep phenomenological analysis method.Results:Eight pediatric cancer patients and twenty-four parents were enrolled in the study.Four main themes and eight subthemes(both children’s and parent’s perspectives)were generated:1)meeting the ongoing needs along the cancer trajectory(can you tell me what comes next;our needs are growing);2)communicating with a family focus(they only talk to my parents;let each family member have a voice);3)providing care beyond the treatment(I am bigger than my body[the children’s needs for emotional consolidation and information about their prognosis];there are things beyond treatment);4)getting support from the community(I am not a monster[the children were unhappy about being treated differently];we want to connect with the resources near us).Conclusion:This study revealed multiple unmet SCNs from the perspective of Chinese children with cancer and their parents.The findings call for comprehensive and in-depth supportive care beyond treatment,integration of the family member voice in pediatric cancer care,and a coordinated pediatric cancer support mechanism in the Chinese healthcare system.
