Engineering

Detection of the nipple in mammograms with Gabor filters and the Radon transform
Detection of the nipple in mammograms is an important step in algorithms for the detection of breast cancer. However, locating the nipple position is a challenging task due to distortion and displacement of the nipple by breast diseases, improper imaging techniques, and variation of the characteristics of breast tissues with different imaging protocols or modalities. This paper presents a novel...


Robot grasp planning based on demonstrated grasp strategies
This paper presents a novel robot grasping planning approach that extracts grasp strategies (grasp type, and thumb placement and direction) from human demonstration and integrates them into the grasp planning procedure to generate a feasible grasp concerning the target object geometry and manipulation task. Our study results show that the grasp strategies of grasp type and thumb placement not o...
An open source automatic quality assurance (OSAQA) tool for the ACR MRI phantom
Routine quality assurance (QA) is necessary and essential to ensure MR scanner performance. This includes geometric distortion, slice positioning and thickness accuracy, high contrast spatial resolution, intensity uniformity, ghosting artefact and low contrast object detectability. However, this manual process can be very time consuming. This paper describes the development and validation of an...


The reduction in Monte Carlo calculated organ doses from CT with tube current modulation using WILLIAM, a voxel model of seven year-old anatomy
The construction of a voxel model of seven year-old male anatomy from a low resolution whole body CT scan acquired with a PET-CT scanner is described. The model is referred to as WILLIAM. The model was used to compare the Monte Carlo calculated relative organ doses with and without tube current modulation from simulated CAP and chest CT examinations. Tube current modulation was simulated in bot...
Real-time depth of anaesthesia assessment using strong analytical signal transform technique
This paper introduces a new method addressing depth of anaesthesia (DoA) assessment for real-time monitoring. The new method uses a combination of phase and amplitude of electroencephalogram (EEG) signals to assess the DoA level. A strong analytical signal transform is applied to extract the phase and amplitude information of the recorded EEG signals. Based on the extracted features from the EE...


Investigation of the robustness of adaptive neuro-fuzzy inference system for tracking moving tumors in external radiotherapy
In external radiotherapy of dynamic targets such as lung and breast cancers, accurate correlation models are utilized to extract real time tumor position by means of external surrogates in correlation with the internal motion of tumors. In this study, a correlation method based on the neuro-fuzzy model is proposed to correlate the input external motion data with internal tumor motion estimation...
Evaluation of respiratory pattern during respiratory-gated radiotherapy
The respiratory cycle is not strictly regular, and generally varies in amplitude and period from one cycle to the next. We evaluated the characteristics of respiratory patterns acquired during respiratory gating treatment in more than 300 patients. A total 331 patients treated with respiratory-gated carbon-ion beam therapy were selected from a group of patients with thoracic and abdominal condi...

A decomposition method for convective–radiative fin with heat generation
This work is aimed at studying the effect of environmental temperature such as radiation sink temperature, convection sink temperature and heat generation number on the temperature distribution and efficiency of a convective–radiative stationary fin. The Adomian Decomposition Method (ADM) being one of the efficient numerical methods for highly non linear equations, the local temperature field...
Testing Empathy with Robots: A Model in Four Dimensions and Sixteen Items
The four-dimensional model of empathy presented in this paper addresses human–human, human–avatar and human–robot interaction, and aims at better understanding the specificities of the empathy that humans might develop towards robots. Its first dimension is auto-empathy and refers to an empathetic relationship with oneself: how can a human directing a robot expand the various components o...

Realistic 3D Terrain Roaming and Real-Time Flight Simulation
This paper presents an integrate method, which can provide access to current status and the dynamic visible scanning topography, to enhance the interactive during the terrain roaming and real-time flight simulation. A digital elevation model and digital ortho-photo map data integrated algorithm is proposed as the base algorithm for our approach to build a realistic 3D terrain scene. A new techn...
Assessment of dynamic cerebral autoregulation and cerebral carbon dioxide reactivity during normothermic cardiopulmonary bypass
Despite increased risk of neurological complications after cardiac surgery, monitoring of cerebral hemodynamics during cardiopulmonary bypass (CPB) is still not a common practice. Therefore, a technique to evaluate dynamic cerebral autoregulation and cerebral carbon dioxide reactivity (CO2R) during normothermic nonpulsatile CPB is presented. The technique uses continuous recording of invasive a...

Algorithms for single-machine scheduling to minimize the total tardiness with learning effects and two competing agents
Scheduling with learning effects or scheduling with two competing agents has been widely studied in recent years. However, they are seldom discussed at the same time. In this article, we consider a single-machine scheduling problem with learning effects where the objective is to minimize the total tardiness of jobs from one agent, given that the maximum tardiness of jobs from the other agent ca...
A modified model of solar collector/regenerator considering effect of the glazing temperature
Solar liquid collector/regenerator (C/R), combining the functions of solar collector and regenerator of absorbent solution together, can be effectively utilized in solar energy-driven liquid desiccant cooling systems. Based on thermal balance of the glazing of solar C/R, a group of modified heat and mass transfer models, validated by experimental results to reflect solution regeneration process...
Trapezoid Cycles and Extended Pinch Analysis
Trapezoid Cycles are thermodynamic cycles, mainly vapour compression cycles, which simply spoken adapt to the heat source curve and the heat sink curve in the temperature – entropy – diagram (T-S-diagram). The name of the cycles refers to the case of sensible heat, where the shapes of these cycles is similar to trapezoids. It was shown before that trapezoid cycles are feasible by adding sto...
A new structure and theoretical analysis on leakage and performance of an oil-free R290 rolling piston compressor
Lubricating oil improves the reliability of compressors and systems, whereas increases the system complexity. Compared with other types of compressors that have oil-free models, a rolling piston compressor has more leakage paths and bigger leakage loss. Therefore, the leakage is an important problem to be solved in order to develop an oil-free rolling piston compressor. The paper put forward a ...