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| 1 | Least Privileges and Role’s Inheritance of RBAC显示文摘The main advantages of role-based access control (RBAC) are able to support the well-known security principles and roles’ inheritance. But for there remains a lack of specific definition and the necessary formalization for RBAC, it is hard to realize RBAC in practical work. Our contribution here is to formalize the main relations of RBAC and take first step to propose concepts of action closure and data closure of a role, based on which we got the specification and algorithm for the least privileges of a role. We propose that roles’ inheritance should consist of inheritance of actions and inheritance of data, and then we got the inheritance of privileges among roles, which can also be supported by existing exploit tools. | HAN Lan-sheng HONG Fan Asiedu Baffour Kojo | 2006 | Wuhan University Journal of Natural Sciences2006，11，1： | 3 |
| 2 | Supervised and Semi-supervised Methods for Abdominal Organ Segmentation: A Review显示文摘Abdominal organ segmentation is the segregation of a single or multiple abdominal organ(s) into semantic image segments of pixels identified with homogeneous features such as color and texture, and intensity. The abdominal organ(s) condition is mostly connected with greater morbidity and mortality. Most patients often have asymptomatic abdominal conditions and symptoms, which are often recognized late;hence the abdomen has been the third most common cause of damage to the human body. That notwithstanding,there may be improved outcomes where the condition of an abdominal organ is detected earlier. Over the years, supervised and semi-supervised machine learning methods have been used to segment abdominal organ(s) in order to detect the organ(s) condition. The supervised methods perform well when the used training data represents the target data, but the methods require large manually annotated data and have adaptation problems. The semi-supervised methods are fast but record poor performance than the supervised if assumptions about the data fail to hold. Current state-of-the-art methods of supervised segmentation are largely based on deep learning techniques due to their good accuracy and success in real world applications. Though it requires a large amount of training data for automatic feature extraction, deep learning can hardly be used. As regards the semi-supervised methods of segmentation, self-training and graph-based techniques have attracted much research attention. Self-training can be used with any classifier but does not have a mechanism to rectify mistakes early. Graph-based techniques thrive on their convexity, scalability, and effectiveness in application but have an out-of-sample problem. In this review paper, a study has been carried out on supervised and semi-supervised methods of performing abdominal organ segmentation. An observation of the current approaches, connection and gaps are identified, and prospective future research opportunities are enumerated. | Isaac Baffour Senkyire Zhe Liu | 2021 | International Journal of Automation and computing2021，18，6： | 3 |
| 3 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Fuchs S Baffour R Zhou YF | 2001 | J Am Coll Cardiol2001，37，6： | 1 |
| 4 | Transepicardial autologous bone marrow-derived nlononuclear cell therapy in a porcine model of chronically infarcted myocardium 显示文摘 | Waksman R Fournadjiev J Baffour R | 2004 | Cardiovase Radiat Med2004，5，3： | 1 |
| 5 | Bone marrow-derived stem cellinteractions with adult cardiomyocytes and skeletal myoblasts in vitro显示文摘 | Baffour R Pakala R Hel inga D | | 0，，04： | 1 |
| 6 | Agiogenic therapy for the chronically ischemic lower limb in a rabbit model显示文摘 | Baffour R Garb J Kaufman J | 2000 | J Surg Res2000，93，2： | 1 |
| 7 | Synergistic effect of basic fibro-blast growth factor and methylprednisolone on neuro-logical function after exoerimental spinal cord injury显示文摘 | Baffour R Achanta K Kaufman J | 1995 | J Neurosurg1995，83，10： | 1 |
| 8 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Baffour R Zhou YF | 2001 | J Am Coll Cardiol2001，37，： | 1 |
| 9 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pig with chronic experimental myocardial ischemia显示文摘 | Fuchs S Baffour R Zhou YF | 2001 | J Am Coll Cardiol2001，37，6： | 1 |
| 10 | Synergistic effect of basic fibroblast growth factor and methylprednisolone on neurological function after experimental spinal cord injury显示文摘 | Baffour R Achanta K Kaufman J | 1995 | J Neurosurg1995，83，1： | 1 |
| 11 | Expression of aldehyde dehydrogenase 1 as a marker of mammary stem cells in benign and malignant breast lesions of Ghanaian women显示文摘 | Theresa Schwartz Azadeh Stark Judy Pang Baffour Awuah Celina G. Kleer Solomon Quayson Stephanie Kingman Francis Aitpillah Francis Abantanga Evelyn Jiagge Joseph K. Oppong Ernest Osei‐Bonsu Iman Martin Xiaowei Yan Kathy Toy Ernest Adjei Max Wicha Lisa A. N | 2012 | Cancer2012，，3： | 1 |
| 12 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Fuchs S Baffour R Zhou YF | 2001 | J Am Coll Cardio2001，37，： | 1 |
| 13 | Transendocardial deliveary of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Fuchs S Baffour R Zhou YF | 2001 | J Am Coll Cardial2001，37，6： | 1 |
| 14 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Fuchs S Baffour R Zhou YF | 2001 | J Am Coll Cardiol2001，37，： | 1 |
| 15 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Baffour R Zhou YF | 2001 | J Am Coll Cardiol2001，37，6： | 1 |
| 16 | African-American women's Conceptualizations of health disparities: a community--based participatory research approach显示文摘 | Baffour TD Chonody JM | 2009 | Am J Community Psychol2009，44，34： | 1 |
| 17 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardium ischemia显示文摘 | Baffour R Zhou LF | 2001 | J Am Coll Cardiol2001，37，6： | 1 |
| 18 | Transendocardial delivery of autologous bone marrow enhances collateral perfusion and regional function in pigs with chronic experimental myocardial ischemia显示文摘 | Fucher S Baffour R Zhou YE | 2001 | J Am Col Cardiol2001，37，： | 1 |
| 19 | 显示文摘 | Fuchs S Baffour R Zhou YF | 2001 | J Am Coll Cardiol2001，376，： | 1 |
| 20 | Cell therapy in myocardial infarction显示文摘 | Collins SD Baffour R Waksman R | 2007 | Cardiovasc Revasc Med2007，8，1： | 1 |
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