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Full-Text Articles in Social and Behavioral Sciences
How Does The Separation Of Ownership And Control Affect Corporate Performance: The Impact Of Earnings Management In China, Yuqing Zhu, Gary G. Tian, Shan Zhao
How Does The Separation Of Ownership And Control Affect Corporate Performance: The Impact Of Earnings Management In China, Yuqing Zhu, Gary G. Tian, Shan Zhao
Faculty of Commerce - Papers (Archive)
This paper examines the impact of disproportional ownership on true firm performance when firm performance is adjusted for the effect of earnings management. Results from regression analysis indicate that the separation between control and cash flow rights of family/or individual-controlled listed firms in China decreases firm performance when firm performance is adjusted for the effect of earnings management than when firm performance is measured as reported performance. The results also show that separation is significantly positively related with true firm performance in firms with low cash flow rights concentration. The main disproportional ownership mechanism, pyramidal structures is also investigated in …
Transcriptional Control Of Kcnq Channel Genes And The Regulation Of Neuronal Excitability, Mariusz Mucha, Lezanne Ooi, John Linley, Pawel Mordaka, Carine Dalle, Brian Robertson, Nikita Gamper, Ian C. Wood
Transcriptional Control Of Kcnq Channel Genes And The Regulation Of Neuronal Excitability, Mariusz Mucha, Lezanne Ooi, John Linley, Pawel Mordaka, Carine Dalle, Brian Robertson, Nikita Gamper, Ian C. Wood
Faculty of Science - Papers (Archive)
Regulation of the resting membrane potential and the repolarization of neurons are important in regulating neuronal excitability. The potassium channel subunits Kv7.2 and Kv7.3 play a key role in stabilizing neuronal activity. Mutations in KCNQ2 and KCNQ3, the genes encoding Kv7.2 and Kv7.3, cause a neonatal form of epilepsy, and activators of these channels have been identified as novel antiepileptics and analgesics. Despite the observations that regulation of these subunits has profound effects on neuronal function, almost nothing is known about the mechanisms responsible for controlling appropriate expression levels. Here we identify two mechanisms responsible for regulating KCNQ2 and …
Effect Of Two Types Of Tree Guards (With And Without Weed Control) On Tree Seedling Establishment, Brenton Ladd, Stephen P. Bonser, Joshua R. Larsen
Effect Of Two Types Of Tree Guards (With And Without Weed Control) On Tree Seedling Establishment, Brenton Ladd, Stephen P. Bonser, Joshua R. Larsen
Faculty of Science - Papers (Archive)
No abstract provided.
Collaborative Management Of Web Ontology Data With Flexible Access Control, Jie Lu, Chao Wang, Guangquan Zhang, Jun Ma
Collaborative Management Of Web Ontology Data With Flexible Access Control, Jie Lu, Chao Wang, Guangquan Zhang, Jun Ma
Faculty of Engineering and Information Sciences - Papers: Part A
The creation and management of ontology data on web sites (e.g. instance data that is used to annotate web pages) is important technical support for the growth of the semantic web. This study identifies some key issues for web ontology data management and describes an ontology data management system, called robinet, to perform the management. This paper presents the structure of the system and introduces a Web ontology data management model that enables a flexible access control mechanism. This model adds rules into the robinet system to utilize the semantics of ontology for controlling the access to ontology data. The …
Humanoid Human-Like Reaching Control Based On Movement Primitives, Minh Tuan Tran, Philippe Souères, Michel Taix, Manish Sreenivasa, Christophe Halgand
Humanoid Human-Like Reaching Control Based On Movement Primitives, Minh Tuan Tran, Philippe Souères, Michel Taix, Manish Sreenivasa, Christophe Halgand
Faculty of Engineering and Information Sciences - Papers: Part B
This paper deals with the problem of generating realistic human-like reaching movements from a small set of movement primitives. Two kinds of movement databases are used as reference. The first one is obtained numerically, by applying biological principles of motor control on the dynamic model of the robot arm. The second one is obtained by recording reaching movements of human subjects. From these databases, primitives are extracted and analyzed by using Principal Component Analysis. An original generalization method is then proposed for generating movements that did not belong to the initial database. We show that twenty primitives allow to produce …
Hrp-2 Plays The Yoyo: From Human To Humanoid Yoyo Playing Using Optimal Control, Katja Mombaur, Manish Sreenivasa
Hrp-2 Plays The Yoyo: From Human To Humanoid Yoyo Playing Using Optimal Control, Katja Mombaur, Manish Sreenivasa
Faculty of Engineering and Information Sciences - Papers: Part B
Yoyo playing may seem easy for a human, but it is a challenging problem for a humanoid robot. This paper presents an approach to generate yoyo motions for the humanoid robot, HRP-2, based on motion recorded from human yoyo playing, dynamical models and numerical optimal control techniques. We recorded vertical yoyo playing of 4 subjects measuring yoyo height and rotation angle as well as the corresponding hand motions. A detailed multi-phase yoyo model with impact collisions and control patterns of human yoyo playing were identified from these measurements. Based on this knowledge, reliable yoyo motions within the feasibility ranges of …
Harmonic Elimination Control Of A Five-Level Dc-Ac Cascaded H-Bridge Hybrid Inverter, Georgios S. Konstantinou, Sridhar R. Pulikanti, Vassilios G. Agelidis
Harmonic Elimination Control Of A Five-Level Dc-Ac Cascaded H-Bridge Hybrid Inverter, Georgios S. Konstantinou, Sridhar R. Pulikanti, Vassilios G. Agelidis
Faculty of Engineering and Information Sciences - Papers: Part A
A five-level hybrid cascaded inverter operating under selective harmonic elimination (SHE) pulse-width modulation (PWM) control is discussed in this paper. The topology is a cascaded connection of a conventional three-phase, two-level inverter and an H-bridge module for each phase with a single DC-source. The topology boosts the output voltage within limits and with no additional DC-DC converters. However, such boosting feature depends on the control of the floating capacitor voltage and the load power factor. The regulation of the floating capacitor for the given modulation strategy is also analyzed. Experimental results taken from a single-phase laboratory prototype are presented to …
Inverse Optimal Control As A Tool To Understand Human Yoyo Playing, Katja Mombaur, Manish Sreenivasa
Inverse Optimal Control As A Tool To Understand Human Yoyo Playing, Katja Mombaur, Manish Sreenivasa
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents an inverse optimal control approach to identify objective functions of human motion from motion capture measurements. We apply it to analyze human yoyo playing. Yoyo playing may seem easy to us to learn but it is a challenging problem from a mechanical point of view involving a hybrid dynamics model. We recorded vertical yoyo playing of humans measuring yoyo height and rotation angle as well as the corresponding hand motions. Results of inverse optimal control are presented showing a mixed criterion of cycle time and terms depending on yoyo and hand acceleration and velocity.