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COMMODITY TRADE AND SILVER MOVEMENTS
Kai Yiu Chan(陳計堯) 도시사학회 2013 도시연구 Vol.9 No.-
The “treaty port” system in nineteenth century East Asia has been understood through the twin dichotomies of Asian-Western and state-to-state worlds. Through a re-examination of the commodity trade and silver movement records of two treaty ports in southern Taiwan (Taiwan-foo and Takow), with particular reference to their relationships with China’s treaty port, Amoy (Xiamen), this paper finds that the dichotomy perspective on East Asian history fails to understand the multiple layers of relationships created by trade and finance. It suggests that the treaty port system in southern Taiwan functioned as a unique framework for change in the nineteenth century.
Newchwang before Newchwang, c1368-1863
Chan, Kai Yiu East-Asian Society for Urban History 2021 Journal of east-asian urban history Vol.3 No.1
Though known for its connections with maritime trade at varying degrees before the rise of the Manchus and their Qing Empire, Newchwang as a fortress did not become a populous urban settlement in the nineteenth century when the Euro-American observers arrived. Through examining the history of this trade-related locale in the Qing Empire, this article explores the broader historical context, especially the Eight Banners System of the Manchus, which prevented Newchwang from developing into a port-city, and the implications behind.
Hai-Tao Yu,Yiu Kwong Wong,Wai Lok Chan,Kai Ming Tsang,Jiang Wang 제어·로봇·시스템학회 2011 International Journal of Control, Automation, and Vol.9 No.5
In this paper, the dynamics of single and two electrically coupled map-based neurons under external electrical stimulation is studied. In order to realize the synchronization of two chaotic spiking neurons, a controller based on the idea of feedback linearization is proposed. The simulation results demonstrate the effectiveness of this developed control method. An important feature of the feedback control is that the amplitude of control signal tends to zero as soon as the synchronization is achieved.
Chi-Ho Lee,Mei-Zhen Wu,David Tak-Wai Lui,Darren Shing-Hei Chan,Carol Ho-Yi Fong,Sammy Wing-Ming Shiu,Ying Wong,Alan Chun-Hong Lee,Joanne King-Yan Lam,Yu-Cho Woo,Karen Siu-Ling Lam,Kelvin Kai-Hang Yiu 대한당뇨병학회 2022 Diabetes and Metabolism Journal Vol.46 No.6
Background: Insulin-treated patients with long duration of type 2 diabetes mellitus (T2DM) are at increased risk of ketoacidosis related to sodium-glucose co-transporter 2 inhibitor (SGLT2i). The extent of circulating ketone elevation in these patients remains unknown. We conducted this study to compare the serum ketone response between dapagliflozin, an SGLT2i, and sitagliptin, a dipeptidyl peptidase-4 inhibitor, among insulin-treated T2DM patients.Methods: This was a randomized, open-label, active comparator-controlled study involving 60 insulin-treated T2DM patients. Participants were randomized 1:1 for 24-week of dapagliflozin 10 mg daily or sitagliptin 100 mg daily. Serum β-hydroxybutyrate (BHB) levels were measured at baseline, 12 and 24 weeks after intervention. Comprehensive cardiometabolic assessments were performed with measurements of high-density lipoprotein cholesterol (HDL-C) cholesterol efflux capacity (CEC), vibration-controlled transient elastography and echocardiography.Results: Among these 60 insulin-treated participants (mean age 58.8 years, diabetes duration 18.2 years, glycosylated hemoglobin 8.87%), as compared with sitagliptin, serum BHB levels increased significantly after 24 weeks of dapagliflozin (P=0.045), with a median of 27% increase from baseline. Change in serum BHB levels correlated significantly with change in free fatty acid levels. Despite similar glucose lowering, dapagliflozin led to significant improvements in body weight (P=0.006), waist circumference (P=0.028), HDL-C (P=0.041), CEC (P=0.045), controlled attenuation parameter (P=0.007), and liver stiffness (P=0.022). Average E/e’, an echocardiographic index of left ventricular diastolic dysfunction, was also significantly lower at 24 weeks in participants treated with dapagliflozin (P=0.037).Conclusion: Among insulin-treated T2DM patients with long diabetes duration, compared to sitagliptin, dapagliflozin modestly increased ketone levels and was associated with cardiometabolic benefits.