As an important component of ecotourism, it is imperative to investigate students＇ constructions of biodiversity-related concepts such as classification and variation in living things and ecosystem elements, identify...As an important component of ecotourism, it is imperative to investigate students＇ constructions of biodiversity-related concepts such as classification and variation in living things and ecosystem elements, identify the conceptual framework of biodiversity in relation to ecotourism, and determine its educational implications. The study population consisted of 13 students enrolled in ecotourism class section hotel AH （HAH） for first term, school year 2010-2011. Questionnaires were administered and focus-group discussions were conducted. Students＇ constructions of biodiversity concepts were determined using modified Conceptual Understanding of the Living Things and Classification （CULC） test. The conceptual framework of biodiversity in relation to ecotourism was investigated using a free word association test. Results were presented and discussed through qualifying themes in biology and biodiversity. Although biodiversity is a multidimensional concept, the questions focused only on ecosystem and species diversity. Analysis of the free association test demonstrated that participants have a very basic and incomplete conceptual understanding of biodiversity in the context of sustainable development and ecotourism. This study may lead to the review and improvement of ecotourism and ecology courses at the De La Salle-College of Saint Benilde （DLS-CSB）.展开更多
This paper studies the multidimensional stability of traveling fronts in monostable reaction-difusion equations,including Ginzburg-Landau equations and Fisher-KPP equations.Eckmann and Wayne(1994)showed a one-dimensio...This paper studies the multidimensional stability of traveling fronts in monostable reaction-difusion equations,including Ginzburg-Landau equations and Fisher-KPP equations.Eckmann and Wayne(1994)showed a one-dimensional stability result of traveling fronts with speeds c c(the critical speed)under complex perturbations.In the present work,we prove that these traveling fronts are also asymptotically stable subject to complex perturbations in multiple space dimensions(n=2,3),employing weighted energy methods.展开更多
文摘As an important component of ecotourism, it is imperative to investigate students＇ constructions of biodiversity-related concepts such as classification and variation in living things and ecosystem elements, identify the conceptual framework of biodiversity in relation to ecotourism, and determine its educational implications. The study population consisted of 13 students enrolled in ecotourism class section hotel AH （HAH） for first term, school year 2010-2011. Questionnaires were administered and focus-group discussions were conducted. Students＇ constructions of biodiversity concepts were determined using modified Conceptual Understanding of the Living Things and Classification （CULC） test. The conceptual framework of biodiversity in relation to ecotourism was investigated using a free word association test. Results were presented and discussed through qualifying themes in biology and biodiversity. Although biodiversity is a multidimensional concept, the questions focused only on ecosystem and species diversity. Analysis of the free association test demonstrated that participants have a very basic and incomplete conceptual understanding of biodiversity in the context of sustainable development and ecotourism. This study may lead to the review and improvement of ecotourism and ecology courses at the De La Salle-College of Saint Benilde （DLS-CSB）.
基金supported by National Science Foundation of USA(Grant No.DMS-0818717)
文摘This paper studies the multidimensional stability of traveling fronts in monostable reaction-difusion equations,including Ginzburg-Landau equations and Fisher-KPP equations.Eckmann and Wayne(1994)showed a one-dimensional stability result of traveling fronts with speeds c c(the critical speed)under complex perturbations.In the present work,we prove that these traveling fronts are also asymptotically stable subject to complex perturbations in multiple space dimensions(n=2,3),employing weighted energy methods.
