In my paper, “Sublimated Colonialism： The Persistence of Actually Existing Settler-Colonialism,” I interrogate the remaining settler-colonialisms that refused to disappear during the epoch of decolonization. I am m...In my paper, “Sublimated Colonialism： The Persistence of Actually Existing Settler-Colonialism,” I interrogate the remaining settler-colonialisms that refused to disappear during the epoch of decolonization. I am most concerned with those settler-colonialisms that persist at the centers of world capitalism, and examine bow this social context often produces an ideology that relegates the concrete reality of settler-colonialism to the past, pushing its existence under supposedly “modem” social relations. Since Frantz Fanon＇s analysis of settler-colonialism, and the class contradiction between colonizer and colonized, was developed in an era where settler-colonialism was partially defined by the relationship between motherland and colony, some often imagine that the era of settler-colonialism is over. Clearly settler-colonialism did not vanish along with this distinction; internal colonies are retained in North America, for example, and the state of Israel is perhaps the most recent historical of this type of colonialism since it was settled and established in the 20th century. Moreover, there is often talk of a “world-wide indigenous movement” which claims to represent a global anti-colonialist front. The point of my paper, therefore, is to examine how settler-colonialism functions and persists when the settler-colony has become synonymous with the motherland. In this social context, colonizers often imagine themselves as the native inhabitants, while those who remain colonized are pushed even further out of history than they were during the previous era of settler-colonialism.展开更多
Objective To study the effects of obstructive sleep apneas on endothelial function and autonomic modulation. Methods From June 2009 to June 2011, male patients with obstructive sleep apnea hypopnea syndrome (OSAHS) we...Objective To study the effects of obstructive sleep apneas on endothelial function and autonomic modulation. Methods From June 2009 to June 2011, male patients with obstructive sleep apnea hypopnea syndrome (OSAHS) were consecutively enrolled in this study. Patients with an apnea/hypopnea index (AHI) of greater than 15 and without previous treatment for OSAHS were included as Group OSAHS and obese subjects with an AHI of less than 5 were included as non-OSAHS controls (Group Control). Electrocardiography and beat-to-beat blood pressure were continuously recorded from the radial artery by applanation tonometry which was synchronized with polysomnography recording. Endothelial function was measured by arterial augmentation index (AAI). Spectral analysis of heart rate variability (HRV) and blood pressure variability (BPV) were computed for cardiac parasympathetic modulation (high frequency power, HF); sympathetic modulation (low frequency power, LF), sympathovagal balance (LF/HF power of R-R variability, LF/HF) and BPV sympathetic modulation (BPV LF) in normalized units [total power of the components/(total power-very LF power)×100]. Results Finally, 27 moderate-severe OSAHS patients and 22 non-OSAHS obese controls were recruited in the Group OSAHS and Group Control, respectively. In Group OSAHS, the age was 43.3±9.3 year-old, body mass index (BMI) was 36.8±8.7 kg/m 2 ; in Group Control, the age was 42.9±8.6 year-old, BMI was 34.4±7.9 kg/m 2 ; there were no significant differences in age and BMI between the Group OSAHS and Group Control (all P>0.05). The baseline AAI (12.5%±2.2% vs. 8.2%±2.1%) and BPV LF (68.3%±13.5% vs. 61.1%±11.7%) of the Group OSAHS were significantly higher than those of the Group Control (all P<0.05). And after overnight sleep, systolic BP (143.7±14.2 vs. 132.8±13.3 mm Hg), diastolic BP (87.7±7.7 vs. 78.6±5.5 mm Hg), HRV LF (69.7%±14.4% vs. 64.3%±12.1%), HRV LF/HF (3.7±2.0 vs. 2.3±1.3) and BPV LF (77.8%±15.6% vs. 68.3%±13.5%) of the Group OSAHS were significantly increased (all P<0.001), while HRV HF was significantly decreased (21.1%±9.3% vs. 27.5%±10.3%, P<0.05) from baseline.Conclusions The baseline endothelial function and autonomic modulation are impaired in OSAHS patients, which happened prior to hypertension and other cardiovascular complications. And the load effects of overnight obstructive breathing events could induce blood pressure and sympathetic activity increasing in the morning in OSAHS patients without acute aggravation in endothelial dysfunction.展开更多
Based upon sociocultural theory, this study investigates the dynamics of the teacher＇s roles and learner autonomy in the process of scaffolding in teacher-student negotiation of meaning in an EFL classroom, The parti...Based upon sociocultural theory, this study investigates the dynamics of the teacher＇s roles and learner autonomy in the process of scaffolding in teacher-student negotiation of meaning in an EFL classroom, The participants were 25 undergraduate students and a Chinese teacher of English at a university in China. The teacher-student dialogue was the central mechanism mediating the construction of negotiation of meaning and form in language learning. The analysis of classroom discourse and the teacher＇s retrospection from an interview illustrated the teacher＇s different roles in interaction, where scaffolding acted as a structured pedagogical tool. The study revealed that the learners were afforded assistance to progress from other- regulation to self-regulation, and consequently, the teacher exploited opportunities to enhance learner autonomy in negotiation of spaces for autonomy in classroom teaching. The study has probed into the significance of the teacher＇s capacity of controlling scaffolding effectively and generated implications for teacher development and learner training.展开更多
Integrative Body-Mind Training（IBMT） originates from ancient Eastern tradition.The method stresses no effort to control thoughts,but instead a state of restful alertness that allows a high degree of awareness of the...Integrative Body-Mind Training（IBMT） originates from ancient Eastern tradition.The method stresses no effort to control thoughts,but instead a state of restful alertness that allows a high degree of awareness of the body,breathing,and external instructions.A series of studies indicates that IBMT improves attention and self-regulation through interaction between the central（brain） and the autonomic（body） nervous systems.The present review mainly summarizes the recent results of IBMT studies and proposes how it changes the state of brain and body to lead to positive outcomes.Future directions in this field are also discussed.展开更多
In this paper, the platoon control problem of autonomous vehicles in highway is studied. Since the autonomous vehicles have the characteristics of nonlinearities, external disturbances and strong coupling, a novel ada...In this paper, the platoon control problem of autonomous vehicles in highway is studied. Since the autonomous vehicles have the characteristics of nonlinearities, external disturbances and strong coupling, a novel adaptive fuzzy sliding coordinated control system is constructed to supervise the longitudinal and lateral motions of autonomous vehicles, in which the fuzzy system is employed to approximate the unknown nonlinear functions. Due to the low sensitivity to disturbances and plant parameter variations, the proposed control approach is an efficient way to handle with the complex dynamic plants operating under un-certainty conditions. The asymptotic stability of adaptive coordinated platoon close-loop control system is verified based on the Lyapunov stability theory. The results indicate that the presented adaptive coordinated platoon control approach can accurately achieve the tracking performance and ensures the stability and riding comfort of autonomous vehicles in a platoon. Finally,simulation test is exploited to demonstrate the effectiveness of the proposed control approach.展开更多
文摘In my paper, “Sublimated Colonialism： The Persistence of Actually Existing Settler-Colonialism,” I interrogate the remaining settler-colonialisms that refused to disappear during the epoch of decolonization. I am most concerned with those settler-colonialisms that persist at the centers of world capitalism, and examine bow this social context often produces an ideology that relegates the concrete reality of settler-colonialism to the past, pushing its existence under supposedly “modem” social relations. Since Frantz Fanon＇s analysis of settler-colonialism, and the class contradiction between colonizer and colonized, was developed in an era where settler-colonialism was partially defined by the relationship between motherland and colony, some often imagine that the era of settler-colonialism is over. Clearly settler-colonialism did not vanish along with this distinction; internal colonies are retained in North America, for example, and the state of Israel is perhaps the most recent historical of this type of colonialism since it was settled and established in the 20th century. Moreover, there is often talk of a “world-wide indigenous movement” which claims to represent a global anti-colonialist front. The point of my paper, therefore, is to examine how settler-colonialism functions and persists when the settler-colony has become synonymous with the motherland. In this social context, colonizers often imagine themselves as the native inhabitants, while those who remain colonized are pushed even further out of history than they were during the previous era of settler-colonialism.
基金Supported by a grant from National Natural Science Foundation of China (81070072)
文摘Objective To study the effects of obstructive sleep apneas on endothelial function and autonomic modulation. Methods From June 2009 to June 2011, male patients with obstructive sleep apnea hypopnea syndrome (OSAHS) were consecutively enrolled in this study. Patients with an apnea/hypopnea index (AHI) of greater than 15 and without previous treatment for OSAHS were included as Group OSAHS and obese subjects with an AHI of less than 5 were included as non-OSAHS controls (Group Control). Electrocardiography and beat-to-beat blood pressure were continuously recorded from the radial artery by applanation tonometry which was synchronized with polysomnography recording. Endothelial function was measured by arterial augmentation index (AAI). Spectral analysis of heart rate variability (HRV) and blood pressure variability (BPV) were computed for cardiac parasympathetic modulation (high frequency power, HF); sympathetic modulation (low frequency power, LF), sympathovagal balance (LF/HF power of R-R variability, LF/HF) and BPV sympathetic modulation (BPV LF) in normalized units [total power of the components/(total power-very LF power)×100]. Results Finally, 27 moderate-severe OSAHS patients and 22 non-OSAHS obese controls were recruited in the Group OSAHS and Group Control, respectively. In Group OSAHS, the age was 43.3±9.3 year-old, body mass index (BMI) was 36.8±8.7 kg/m 2 ; in Group Control, the age was 42.9±8.6 year-old, BMI was 34.4±7.9 kg/m 2 ; there were no significant differences in age and BMI between the Group OSAHS and Group Control (all P>0.05). The baseline AAI (12.5%±2.2% vs. 8.2%±2.1%) and BPV LF (68.3%±13.5% vs. 61.1%±11.7%) of the Group OSAHS were significantly higher than those of the Group Control (all P<0.05). And after overnight sleep, systolic BP (143.7±14.2 vs. 132.8±13.3 mm Hg), diastolic BP (87.7±7.7 vs. 78.6±5.5 mm Hg), HRV LF (69.7%±14.4% vs. 64.3%±12.1%), HRV LF/HF (3.7±2.0 vs. 2.3±1.3) and BPV LF (77.8%±15.6% vs. 68.3%±13.5%) of the Group OSAHS were significantly increased (all P<0.001), while HRV HF was significantly decreased (21.1%±9.3% vs. 27.5%±10.3%, P<0.05) from baseline.Conclusions The baseline endothelial function and autonomic modulation are impaired in OSAHS patients, which happened prior to hypertension and other cardiovascular complications. And the load effects of overnight obstructive breathing events could induce blood pressure and sympathetic activity increasing in the morning in OSAHS patients without acute aggravation in endothelial dysfunction.
基金supported by Hubei Provincial Educational Science Planned Project(No.2014B004)the Fundamental Research Funds for the Central Universities(No.413000004)supported by the Special Funds for Reform of Education and Teaching for the Central Universities(No.413200010)
文摘Based upon sociocultural theory, this study investigates the dynamics of the teacher＇s roles and learner autonomy in the process of scaffolding in teacher-student negotiation of meaning in an EFL classroom, The participants were 25 undergraduate students and a Chinese teacher of English at a university in China. The teacher-student dialogue was the central mechanism mediating the construction of negotiation of meaning and form in language learning. The analysis of classroom discourse and the teacher＇s retrospection from an interview illustrated the teacher＇s different roles in interaction, where scaffolding acted as a structured pedagogical tool. The study revealed that the learners were afforded assistance to progress from other- regulation to self-regulation, and consequently, the teacher exploited opportunities to enhance learner autonomy in negotiation of spaces for autonomy in classroom teaching. The study has probed into the significance of the teacher＇s capacity of controlling scaffolding effectively and generated implications for teacher development and learner training.
基金supported by the National Natural Science Foundation of China (60971096)National Basic Research Development Program of China (973 Program,2012CB518200)
文摘Integrative Body-Mind Training（IBMT） originates from ancient Eastern tradition.The method stresses no effort to control thoughts,but instead a state of restful alertness that allows a high degree of awareness of the body,breathing,and external instructions.A series of studies indicates that IBMT improves attention and self-regulation through interaction between the central（brain） and the autonomic（body） nervous systems.The present review mainly summarizes the recent results of IBMT studies and proposes how it changes the state of brain and body to lead to positive outcomes.Future directions in this field are also discussed.
基金supported by the National Natural Science Foundation of China(Grant Nos.61304193&U1564208)National Key R&D Program of China(Grant No.2016YFB0100900)
文摘In this paper, the platoon control problem of autonomous vehicles in highway is studied. Since the autonomous vehicles have the characteristics of nonlinearities, external disturbances and strong coupling, a novel adaptive fuzzy sliding coordinated control system is constructed to supervise the longitudinal and lateral motions of autonomous vehicles, in which the fuzzy system is employed to approximate the unknown nonlinear functions. Due to the low sensitivity to disturbances and plant parameter variations, the proposed control approach is an efficient way to handle with the complex dynamic plants operating under un-certainty conditions. The asymptotic stability of adaptive coordinated platoon close-loop control system is verified based on the Lyapunov stability theory. The results indicate that the presented adaptive coordinated platoon control approach can accurately achieve the tracking performance and ensures the stability and riding comfort of autonomous vehicles in a platoon. Finally,simulation test is exploited to demonstrate the effectiveness of the proposed control approach.
