To establish the empirical capacity model of an on- ramp merging section, the Erlang distribution is first selected to define the time headway distribution, and then the gap acceptance theory is applied to develop the...To establish the empirical capacity model of an on- ramp merging section, the Erlang distribution is first selected to define the time headway distribution, and then the gap acceptance theory is applied to develop the basic capacity model of the on-ramp merging section. Since not all the time headways on the shoulder lane can be made full use of by on- ramp vehicles, a modified capacity model is developed, which takes the usage probability of time headway into consideration. Then, a model of capacity discount coefficient ~： is developed. Finally, based on the modified capacity model and the model of capacity discount coefficient, an empirical merge capacity model which contains the shoulder lane volume, critical gap, and the distance from nose to merging point, is constructed. Results show that, compared with other models, the proposed model is more reasonable since it takes merging section geometry into consideration, and it is easy to apply. The merge capacity varies with the shoulder lane volume, the critical gap, the distance between the nose and the merging point, and the design velocity of the shoulder lane and ramp.展开更多
The premise of this abstract focuses on lessons learned as a clinician through the process of being invited into the homes, lives and stories of trauma and incredible resilience for native survivors of Indian resident...The premise of this abstract focuses on lessons learned as a clinician through the process of being invited into the homes, lives and stories of trauma and incredible resilience for native survivors of Indian residential schools. Through the process of unravelling stories of past trauma with a view to recovery/freedom from symptoms, meaningful therapy requires the weaving together of traditional beliefs and practices with trauma focused cognitive behavioral therapy approaches. Culturally, the relevant treatment respects traditional beliefs and focuses on their innate resiliency historically within their culture. As a clinician invited intimately through the therapeutic relationship into the lives of First Nations abuse survivors, the healing power of cultural identity was discovered along them. Similarly, the author＇s role as therapist was one of teachers, who guided them through the process of telling their stories to the peace and acceptance utilizing therapeutic techniques from an eclectic spectrum of therapeutic approaches. All the while, it should interweave their stories and native beliefs into the therapy journey. It was a process of co-creating healing through a mutual respect of the shared roles as guide, teacher, story teller and healer. Culturally, the relevant psychotherapy requires the weaving of two world views to create a basket of healing.展开更多
For communication systems with heavy burst noise, an optimal Forward Error Correction(FEC) scheme is expected to have a large burst error correction capability while simultaneously owning moderate random error correct...For communication systems with heavy burst noise, an optimal Forward Error Correction(FEC) scheme is expected to have a large burst error correction capability while simultaneously owning moderate random error correction capability. This letter presents a new FEC scheme based on multiple-symbol interleaved Reed-Solomon codes and an associated two-pass decoding algorithm. It is shown that the proposed multi-symbol interleaved Reed-Solomon scheme can achieve nearly twice as much as the burst error correction capability of conventional single-symbol interleaved Reed-Solomon codes with the same code length and code rate.展开更多
基金The National Natural Science Foundation of China(No.51278520 51278220)the Science and Technology Development Project of Jilin Province(No.20130206093SF)
文摘To establish the empirical capacity model of an on- ramp merging section, the Erlang distribution is first selected to define the time headway distribution, and then the gap acceptance theory is applied to develop the basic capacity model of the on-ramp merging section. Since not all the time headways on the shoulder lane can be made full use of by on- ramp vehicles, a modified capacity model is developed, which takes the usage probability of time headway into consideration. Then, a model of capacity discount coefficient ~： is developed. Finally, based on the modified capacity model and the model of capacity discount coefficient, an empirical merge capacity model which contains the shoulder lane volume, critical gap, and the distance from nose to merging point, is constructed. Results show that, compared with other models, the proposed model is more reasonable since it takes merging section geometry into consideration, and it is easy to apply. The merge capacity varies with the shoulder lane volume, the critical gap, the distance between the nose and the merging point, and the design velocity of the shoulder lane and ramp.
文摘The premise of this abstract focuses on lessons learned as a clinician through the process of being invited into the homes, lives and stories of trauma and incredible resilience for native survivors of Indian residential schools. Through the process of unravelling stories of past trauma with a view to recovery/freedom from symptoms, meaningful therapy requires the weaving together of traditional beliefs and practices with trauma focused cognitive behavioral therapy approaches. Culturally, the relevant treatment respects traditional beliefs and focuses on their innate resiliency historically within their culture. As a clinician invited intimately through the therapeutic relationship into the lives of First Nations abuse survivors, the healing power of cultural identity was discovered along them. Similarly, the author＇s role as therapist was one of teachers, who guided them through the process of telling their stories to the peace and acceptance utilizing therapeutic techniques from an eclectic spectrum of therapeutic approaches. All the while, it should interweave their stories and native beliefs into the therapy journey. It was a process of co-creating healing through a mutual respect of the shared roles as guide, teacher, story teller and healer. Culturally, the relevant psychotherapy requires the weaving of two world views to create a basket of healing.
文摘For communication systems with heavy burst noise, an optimal Forward Error Correction(FEC) scheme is expected to have a large burst error correction capability while simultaneously owning moderate random error correction capability. This letter presents a new FEC scheme based on multiple-symbol interleaved Reed-Solomon codes and an associated two-pass decoding algorithm. It is shown that the proposed multi-symbol interleaved Reed-Solomon scheme can achieve nearly twice as much as the burst error correction capability of conventional single-symbol interleaved Reed-Solomon codes with the same code length and code rate.
