Bonnie Liu - Academia.edu (original) (raw)

Papers by Bonnie Liu

Research paper thumbnail of Media Convergence

Postcolonial Studies Meets Media Studies, 2016

"The book brings together experts from Media and Communication Studies with Postcolonial Stu... more "The book brings together experts from Media and Communication Studies with Postcolonial Studies scholars to illustrate how the two fields may challenge and enrich each other. Its essays introduce readers to selected topics including »Media Convergence«, »Transcultural Subjectivity«, »Hegemony«, »Piracy« and »Media History and Colonialism«. Drawing on examples from film, literature, music, TV and the internet, the contributors investigate the transnational dimensions in today's media, engage with local and global media politics and discuss media outlets as economic agents, thus illustrating mechanisms of power in postcolonial and neo-colonial mediascapes."--Publisher websit

Research paper thumbnail of Unified Fine-grained Access Control for Personal Health Records in Cloud Computing

IEEE journal of biomedical and health informatics, Jan 25, 2018

Attribute-based encryption has been a promising encryption technology to secure personal health r... more Attribute-based encryption has been a promising encryption technology to secure personal health records (PHRs) sharing in cloud computing. PHRs consist of the patient data often collected from various sources including hospitals and general practice centres. Different patients' access policies have a common access sub-policy. In this paper, we propose a novel attribute-based encryption scheme for fine-grained and flexible access control to PHRs data in cloud computing. The scheme generates shared information by the common access sub-policy which is based on different patients' access policies. Then the scheme combines the encryption of PHRs from different patients. Therefore, both time consumption of encryption and decryption can be reduced. Medical staff require varying levels of access to PHRs. The proposed scheme can also support multi-privilege access control so that medical staff can access the required level of information while maximizing patient privacy. Through impl...

Research paper thumbnail of Evaluation of an enhanced recovery protocol on patients having radical cystectomy for bladder cancer

Canadian Urological Association Journal, 2018

Introduction: Enhanced recovery after surgery (ERAS) protocols are multimodal perioperative care ... more Introduction: Enhanced recovery after surgery (ERAS) protocols are multimodal perioperative care protocols that are designed to shorten recovery time and reduce complication rates.1,2 An ERAS protocol was implemented in the Saskatoon Health region for radical cystectomy patients in 2013. This study evaluates the safety and efficacy of the protocol for patients having radical cystectomy for bladder cancer. Methods: Length of stay (LOS), early in-hospital complication rates, 30-day readmission rates, age, and gender were collected for patients seen for bladder cancer requiring radical cystectomy in Saskatoon between January 2007 and December 2016. Of these patients, 176 were pre-ERAS implementation (control group) and 84 were post-ERAS implementation (experimental group). The data from each variable was compared between the groups using a Z-test. Results: There was no significant difference in age or gender of patients between the groups. Average LOS pre-ERAS was 14.25±14.57 days, whi...

Research paper thumbnail of Can a supervised algorithmic assessment of men for prostate cancer improve the quality of care? A retrospective evaluation of a prostate assessment pathway in Saskatchewan

Canadian Urological Association Journal, 2017

Introduction: The Saskatoon Prostate Assessment Pathway (SPAP) was developed in 2013 in part to d... more Introduction: The Saskatoon Prostate Assessment Pathway (SPAP) was developed in 2013 in part to decrease the wait times between physician referral and biopsy for patients with suspected prostate cancer. Using an algorithm carefully designed to optimize appropriate prostate biopsy rates, physicians can directly refer patients for biopsy through the SPAP without seeing a urologist. All other patients are referred to the Saskatoon Urology Associates (SUA). The present study evaluates the performance of the algorithm.Methods: 971 patients seen at the SUA and 302 patients seen through the SPAP were identified. Information on age, biopsy status and outcome, risk stratification, and time between referral and biopsy was collected. Biopsy wait time data was analyzed using gamma distribution. Association between referral method and biopsy rate, and between referral method and risk stratification, was analyzed using Z-test.Results: The expected wait time from referral to biopsy for patients se...

Research paper thumbnail of Media Convergence

Postcolonial Studies Meets Media Studies, 2016

"The book brings together experts from Media and Communication Studies with Postcolonial Stu... more "The book brings together experts from Media and Communication Studies with Postcolonial Studies scholars to illustrate how the two fields may challenge and enrich each other. Its essays introduce readers to selected topics including »Media Convergence«, »Transcultural Subjectivity«, »Hegemony«, »Piracy« and »Media History and Colonialism«. Drawing on examples from film, literature, music, TV and the internet, the contributors investigate the transnational dimensions in today's media, engage with local and global media politics and discuss media outlets as economic agents, thus illustrating mechanisms of power in postcolonial and neo-colonial mediascapes."--Publisher websit

Research paper thumbnail of Unified Fine-grained Access Control for Personal Health Records in Cloud Computing

IEEE journal of biomedical and health informatics, Jan 25, 2018

Attribute-based encryption has been a promising encryption technology to secure personal health r... more Attribute-based encryption has been a promising encryption technology to secure personal health records (PHRs) sharing in cloud computing. PHRs consist of the patient data often collected from various sources including hospitals and general practice centres. Different patients' access policies have a common access sub-policy. In this paper, we propose a novel attribute-based encryption scheme for fine-grained and flexible access control to PHRs data in cloud computing. The scheme generates shared information by the common access sub-policy which is based on different patients' access policies. Then the scheme combines the encryption of PHRs from different patients. Therefore, both time consumption of encryption and decryption can be reduced. Medical staff require varying levels of access to PHRs. The proposed scheme can also support multi-privilege access control so that medical staff can access the required level of information while maximizing patient privacy. Through impl...

Research paper thumbnail of Evaluation of an enhanced recovery protocol on patients having radical cystectomy for bladder cancer

Canadian Urological Association Journal, 2018

Introduction: Enhanced recovery after surgery (ERAS) protocols are multimodal perioperative care ... more Introduction: Enhanced recovery after surgery (ERAS) protocols are multimodal perioperative care protocols that are designed to shorten recovery time and reduce complication rates.1,2 An ERAS protocol was implemented in the Saskatoon Health region for radical cystectomy patients in 2013. This study evaluates the safety and efficacy of the protocol for patients having radical cystectomy for bladder cancer. Methods: Length of stay (LOS), early in-hospital complication rates, 30-day readmission rates, age, and gender were collected for patients seen for bladder cancer requiring radical cystectomy in Saskatoon between January 2007 and December 2016. Of these patients, 176 were pre-ERAS implementation (control group) and 84 were post-ERAS implementation (experimental group). The data from each variable was compared between the groups using a Z-test. Results: There was no significant difference in age or gender of patients between the groups. Average LOS pre-ERAS was 14.25±14.57 days, whi...

Research paper thumbnail of Can a supervised algorithmic assessment of men for prostate cancer improve the quality of care? A retrospective evaluation of a prostate assessment pathway in Saskatchewan

Canadian Urological Association Journal, 2017

Introduction: The Saskatoon Prostate Assessment Pathway (SPAP) was developed in 2013 in part to d... more Introduction: The Saskatoon Prostate Assessment Pathway (SPAP) was developed in 2013 in part to decrease the wait times between physician referral and biopsy for patients with suspected prostate cancer. Using an algorithm carefully designed to optimize appropriate prostate biopsy rates, physicians can directly refer patients for biopsy through the SPAP without seeing a urologist. All other patients are referred to the Saskatoon Urology Associates (SUA). The present study evaluates the performance of the algorithm.Methods: 971 patients seen at the SUA and 302 patients seen through the SPAP were identified. Information on age, biopsy status and outcome, risk stratification, and time between referral and biopsy was collected. Biopsy wait time data was analyzed using gamma distribution. Association between referral method and biopsy rate, and between referral method and risk stratification, was analyzed using Z-test.Results: The expected wait time from referral to biopsy for patients se...