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José Miguel Campos,Ana Catarina Sousa,Pedro Olivério Pinto,Jorge Ribeiro,Miguel Lacueva França,Ana Rita Caseiro,Mariana Vieira Branquinho,Sílvia Santos Pedrosa,Carla Mendonça,Ana Brandão,José Domingos 한국생체재료학회 2019 생체재료학회지 Vol.23 No.1
Autologous bone remains the gold standard grafting substrate for bone fusions used for small gaps and critical defects. However, significant morbidity is associated with the harvesting of autologous bone grafts and, for that reason, alternative bone graft substitutes have been developed. In the present case series, a glass-reinforced hydroxyapatite synthetic bone substitute, with osteoinductive and osteoconductive proprieties, was applied. This synthetic bone substitute comprises the incorporation of P2O5-CaO glass-based system within a hydroxyapatite matrix, moulded into spherical pellets with 250-500 μm of diameter. A total of 14 veterinary clinical cases of appendicular bone defects and maxillary / mandibular bone defects are described. In all clinical cases, the synthetic bone substitute was used to fill bone defects, enhancing bone regeneration and complementing the recommended surgical techniques. Results demonstrated that it is an appropriate synthetic bone graft available to be used in veterinary patients. It functioned as a space filler in association with standard orthopaedic and odontological procedures of stabilization, promoting a faster bone fusion without any local or systemic adverse reactions. This procedure improves the animals’ quality of life, decreasing pain and post-operative recovery period, as well as increasing bone stability improving positive clinical outcomes.
Oliver Gembruch,Elias Lemonas,Yahya Ahmadipour,Ulrich Sure,Nicolai El Hindy,Richard Dodel,Oliver Müller 대한척추신경외과학회 2019 Neurospine Vol.16 No.2
Objective: Demographic changes have led to a higher incidence of C-2 fractures, especially in elderly patients. For patients with type II fractures, treatment remains controversial, as discussed by Anderson and D’Alonzo, due to the rising morbidity and mortality rates for any treatment. The aim of this study was to compare conservative and surgical management in patients with type II C-2 fractures regarding outcomes, complications, and the mortality rate. Methods: A retrospective analysis was performed of the medical records, X-rays, and/or computed tomography scans of patients ≥80 years of age with type II fractures who were admitted to our Department of Neurosurgery between January 1990 and December 2017. The success of treatment was evaluated 3 months after surgery. Results: In total, 125 patients were included, of whom 98 were treated surgically and 27 were treated conservatively. Surgical treatment was successful in 90.8% of cases, while conservative treatment was successful in 70.0%. The in-hospital mortality was 14.29% and the 3-month mortality was 27.8% in the surgical group, compared to 3.7% and 20% in the conservatively treated group. The in-hospital complication rate was 22.4% in the surgically treated patients and 7.4% in the conservatively treated patients. Conclusion: Surgical treatment of type II fractures seemed to be associated with higher success and complication rates than conservative treatment. Nevertheless, 3-month mortality was comparable in both groups. Therefore, we conclude that surgical treatment for type II fractures in elderly patients is superior to conservative management, although conservative treatment remains a valuable option in elderly patients with severe comorbidities.
Adaptive Local Model Networks with Higher Degree Polynomials
Oliver Banfer,Marlon Franke,Oliver Nelles 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
A new adaptation method for local model networks with higher degree polynomials which are trained by the polynomial model tree (POLYMOT) algorithm is presented in this paper. Usually the local models are linearly parameterized and those parameters are typically adapted by a recursive least squares approach. For the utilization of higher degree polynomials a subset selection method, which is a part of the POLYMOT algorithm, selects and estimates the most significant parameters from a huge parameter matrix. This matrix contains one parameter wi,nx for each input u<SUP>l</SUP>p up to the maximal polynomial degree and for all the combinations of the inputs. It is created during the training procedure of the local model network. For the online adaptation of the trained local model network only the selected parameters should be used. Otherwise the local model network would be too flexible and the idea of subset selection would be lost. Therefore the presented adaptation method generates at first a new parameter matrix with the selected and most significant parameters which are unequal to zero. Afterwards the local model parameters can be adapted with the aid of a standard recursive least squares method.
From Tombstones to Corpora: TSML for Research on Language, Culture, Identity and Gender Differences
( Oliver Streiter ),( Leonhard Voltmer ),( Yoann Goudin ) 한국언어정보학회 2007 학술대회 논문집 Vol.2007 No.-
Tombstone inscriptions represent a linguistic genre which yields insights in culture and language. Creating corpora from tombstones is thus a complementary approach for the study of languages and cultures. For the annotation of tombstone corpora, we propose TSML, the Tombstone-Markup-Language, developed during the massive annotation of Taiwanese tombstones and a number of tombstones from China, Indonesia and Europe. We discuss our conceptual framework in the annotation of tombstones and derive successively and present preliminary research data to show how the usefulness of the annotations. Finally, we will encourage researchers to participate in the specification of TSML to obtain soon an annotation language for annotations across cultures and languages.
Understanding Information Culture: Conceptual and Implementation Issues
Oliver, Gillian Korea Institute of Science and Technology Informat 2017 Journal of Information Science Theory and Practice Vol.5 No.1
Information culture is a concept with multiple and sometimes conflicting definitions. Nevertheless at a time when social and cognitive aspects of information and communication systems are recognized as being of similar significance as the technological functionality, the concept of information culture is demonstrating considerable value. This paper explains the concept of information culture and considers its value from two main perspectives: firstly as providing an analytical tool, and secondly as a means of providing practitioners with insight and sensitivity to the organisational contexts of their workplaces.
Oliver Prenzel,이상완,변증남,Axel Graeser 동국대학교 정보융합기술원 2008 International Journal of Assistive Robotics and Sy Vol.9 No.4
MASSiVE (Multi – Layer Architecture for Semi-Autonomous Service Robots with Verified Task Execution) is a software framework that provides an infrastructure concept for distributed sensor and actuator systems such as service robots, operating in environments that are equipped with smart components. Besides this modular and extensible architecture, a principle of task knowledge specification and verification with processstructures is included in MASSiVE that is able to guarantee task planning in real time along with verified and thus robust system runtime behavior. In this paper the framework is presented briefly. The focus of this contribution is to study how to apply the MASSiVE principles for a typical sample application scenario in KAIST’s Intelligent Sweet Home System. First, the required software components have to be derived, and second the exemplary application of MASSiVE’s specification and verification methods and tools is demonstrated. The flexibility and the structuring capabilities of the MASSiVE framework as well as the impact of fast system deployment will be worked out.
Oliv, Stefan,Noor, Adnan,Gustafsson, Ewa,Hagberg, Mats Occupational Safety and Health Research Institute 2017 Safety and health at work Vol.8 No.4
Background: The aim of this study was to investigate which physical and psychosocial work demands were associated with excellent work ability in individuals with neck pain, and to investigate age and sex differences in these associations. Methods: The study sample was obtained from the Statistics Sweden cross-sectional Work Environment survey and consisted of workers who reported neck pain after work (N = 3,212). Results: The findings showed an association between excellent work ability and self-reported low exposure to lifting, twisted work posture, working with hands in shoulder level or higher, and leaning forward without support and combination of exposures containing these work demands. Low exposure to seated work and high demands showed a reversed association. The associations were present mainly among older workers and were generally stronger for men than for women. Conclusion: This study indicates that a lower level of physically demanding work is an important element to maintain excellent work ability, especially for the older worker with neck pain.