Firstly,an analysis is made from the point of view of sociology on traditional modeling logic of prevention and control of adolescents' deviant behavior in rural community,and maintenance and reproduction of this ...Firstly,an analysis is made from the point of view of sociology on traditional modeling logic of prevention and control of adolescents' deviant behavior in rural community,and maintenance and reproduction of this model.The traditional prevention and control model of adolescents' deviant behavior in rural community is diversity-orderly pattern prevention and control system.This system is based on natural economy,especially on agricultural economy."Supervision by public opinion and moral imitation" is the basic operation logic of this system.It contains a compensation mechanism of "bringing up children for the purpose of being looked after in old age" and "favor returning".Then,deconstruction of traditional prevention and control model for adolescents' deviant behavior in rural community is analyzed.Along with advance in rural modern democratic management and legal construction and growing of rural market economy,function of traditional diversity-orderly pattern of prevention and control of adolescents' deviate behavior in rural community is weak and weak in prevention and control of modern rural adolescents' deviant behavior.Finally,modeling ideas of new(coordinative) prevention and control of rural adolescents' deviant behavior are put forward from four aspects,namely,democracy and legal system,community,family and various rural adolescent admittance organizations.展开更多
The aim of this study was to assess the effect of long-term in vitro sub-culturing on the varietal degeneration of three sweet potato varieties, namely, Monate, Mokone and Ndou which were sub-cultured for 32, 23 and 1...The aim of this study was to assess the effect of long-term in vitro sub-culturing on the varietal degeneration of three sweet potato varieties, namely, Monate, Mokone and Ndou which were sub-cultured for 32, 23 and 12 generations, respectively. Each generation was cultured in a media which is made from 4.43 g/L Murashige and Skoog (MS), 30 g/L sucrose and 2 g/L gelrite, respectively, and grown under 16 h light and 8 h dark photoperiod for 30 d. For each generation, 45 plantlets were acclimatized for two months in a glasshouse. Data on in vitro growth performance and 11 morphological characteristics during acclimatization were recorded. Early root and shoot formation was observed after the 27th and 21st sub-cultured generations of Monate and Mokone, respectively. During acclimatization, plantlets from the same variety showed differences in morphological traits such as leaf colour, abaxial leaf pigmentation, vine pigmentation, petiole pigmentation, leaf wrinkling and flowering. However, the rate of these morphological differences is random and irrespective to increase in sub-culturing. Therefore, to understand the genetic base of these morphological variability, two plantlets from each variety were subjected to genetic analysis by using five simple sequence repeat (SSR) primers (IB-242, IB-318, IB-255F, 1B-248 and IB-255). Although SSR loci IB-255F and IB-318 could distinguish between the three varieties, there were no allelic polymorphisms detected in plantlets from the same varieties. Therefore, long-term sub-culturing do not leads to quality degeneration in the three sweet potato varieties.展开更多
In this paper,the researcher examines lessons from massive open online courses(MOOCs)in the liberal art in a university.It intends to define a research agenda into the social epistemology impact of MOOCs,in order to r...In this paper,the researcher examines lessons from massive open online courses(MOOCs)in the liberal art in a university.It intends to define a research agenda into the social epistemology impact of MOOCs,in order to reflect on changes in academic sub-culture and on learning measurement among students in university.For this reason the researcher suggests focusing attention on three features of MOOC phenomenology:MOOCs as a social epistemology—an active policy initiative to promote greater democratization of education;MOOCs as a medium and an academic sub-cultural artifact(mediated texts,videos,interface,platform functionalities)able to convey learning to distant learners;and,lastly,MOOCs as a measurement—in other words as instrumentation(i.e.,learning statements,analytics,algorithms,visualizion tools,dashboards etc.)that allows students to monitor,analyze,and optimize the effectiveness of online teaching and learning.The paper also highlights their limits in these regards based on the perspectives of social epistemology.展开更多
Objective: To investigate the current situation and influencing factors of classroom situation deviant behavior ofundergraduate nursing students in colleges of traditional Chinese medicine. Methods: Three hundred ande...Objective: To investigate the current situation and influencing factors of classroom situation deviant behavior ofundergraduate nursing students in colleges of traditional Chinese medicine. Methods: Three hundred andeighty-two undergraduate nursing students in Tianjin University of Traditional Chinese Medicine were investigatedby general situation questionnaire, Classroom Situation Deviation Behavior questionnaire, Utrecht WorkEngagement Scale-Student and Mobile phone addiction index scale. Results: The scores of the ClassroomSituation Deviation Behavior questionnaire of nursing students were (46.04 ± 14.94). The results of multiple linearregression analysis showed that gender, academic ranking, family income (RMB/month), learning involvement andmobile phone dependence were the influencing factors, accounting for 32.9% of the total variation. Conclusion:The classroom situation deviant behavior of undergraduate nursing students in colleges of traditional Chinesemedicine is moderately upper-level. It is suggested that the management departments of colleges should strictlyenforce the classroom management system, improve the teaching level of teachers, guide students to develop goodlearning habits, and constantly stimulate students' learning enthusiasm in order to reduce the occurrence ofclassroom situation deviation behavior.展开更多
文摘Firstly,an analysis is made from the point of view of sociology on traditional modeling logic of prevention and control of adolescents' deviant behavior in rural community,and maintenance and reproduction of this model.The traditional prevention and control model of adolescents' deviant behavior in rural community is diversity-orderly pattern prevention and control system.This system is based on natural economy,especially on agricultural economy."Supervision by public opinion and moral imitation" is the basic operation logic of this system.It contains a compensation mechanism of "bringing up children for the purpose of being looked after in old age" and "favor returning".Then,deconstruction of traditional prevention and control model for adolescents' deviant behavior in rural community is analyzed.Along with advance in rural modern democratic management and legal construction and growing of rural market economy,function of traditional diversity-orderly pattern of prevention and control of adolescents' deviate behavior in rural community is weak and weak in prevention and control of modern rural adolescents' deviant behavior.Finally,modeling ideas of new(coordinative) prevention and control of rural adolescents' deviant behavior are put forward from four aspects,namely,democracy and legal system,community,family and various rural adolescent admittance organizations.
文摘The aim of this study was to assess the effect of long-term in vitro sub-culturing on the varietal degeneration of three sweet potato varieties, namely, Monate, Mokone and Ndou which were sub-cultured for 32, 23 and 12 generations, respectively. Each generation was cultured in a media which is made from 4.43 g/L Murashige and Skoog (MS), 30 g/L sucrose and 2 g/L gelrite, respectively, and grown under 16 h light and 8 h dark photoperiod for 30 d. For each generation, 45 plantlets were acclimatized for two months in a glasshouse. Data on in vitro growth performance and 11 morphological characteristics during acclimatization were recorded. Early root and shoot formation was observed after the 27th and 21st sub-cultured generations of Monate and Mokone, respectively. During acclimatization, plantlets from the same variety showed differences in morphological traits such as leaf colour, abaxial leaf pigmentation, vine pigmentation, petiole pigmentation, leaf wrinkling and flowering. However, the rate of these morphological differences is random and irrespective to increase in sub-culturing. Therefore, to understand the genetic base of these morphological variability, two plantlets from each variety were subjected to genetic analysis by using five simple sequence repeat (SSR) primers (IB-242, IB-318, IB-255F, 1B-248 and IB-255). Although SSR loci IB-255F and IB-318 could distinguish between the three varieties, there were no allelic polymorphisms detected in plantlets from the same varieties. Therefore, long-term sub-culturing do not leads to quality degeneration in the three sweet potato varieties.
文摘In this paper,the researcher examines lessons from massive open online courses(MOOCs)in the liberal art in a university.It intends to define a research agenda into the social epistemology impact of MOOCs,in order to reflect on changes in academic sub-culture and on learning measurement among students in university.For this reason the researcher suggests focusing attention on three features of MOOC phenomenology:MOOCs as a social epistemology—an active policy initiative to promote greater democratization of education;MOOCs as a medium and an academic sub-cultural artifact(mediated texts,videos,interface,platform functionalities)able to convey learning to distant learners;and,lastly,MOOCs as a measurement—in other words as instrumentation(i.e.,learning statements,analytics,algorithms,visualizion tools,dashboards etc.)that allows students to monitor,analyze,and optimize the effectiveness of online teaching and learning.The paper also highlights their limits in these regards based on the perspectives of social epistemology.
文摘Objective: To investigate the current situation and influencing factors of classroom situation deviant behavior ofundergraduate nursing students in colleges of traditional Chinese medicine. Methods: Three hundred andeighty-two undergraduate nursing students in Tianjin University of Traditional Chinese Medicine were investigatedby general situation questionnaire, Classroom Situation Deviation Behavior questionnaire, Utrecht WorkEngagement Scale-Student and Mobile phone addiction index scale. Results: The scores of the ClassroomSituation Deviation Behavior questionnaire of nursing students were (46.04 ± 14.94). The results of multiple linearregression analysis showed that gender, academic ranking, family income (RMB/month), learning involvement andmobile phone dependence were the influencing factors, accounting for 32.9% of the total variation. Conclusion:The classroom situation deviant behavior of undergraduate nursing students in colleges of traditional Chinesemedicine is moderately upper-level. It is suggested that the management departments of colleges should strictlyenforce the classroom management system, improve the teaching level of teachers, guide students to develop goodlearning habits, and constantly stimulate students' learning enthusiasm in order to reduce the occurrence ofclassroom situation deviation behavior.