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Search Results: 1 - 10 of 10746 matches for " Primary Component "
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Relationship between oxygen uptake and oxygen supply system during constant-load supine exercise
T Arimitsu,R Matsuura,T Yunoki,R Yamanaka
Biology of Sport , 2010,
Abstract: The purpose of this study was to determine the relationship between oxygen uptake (VO2) kinetics and oxygen supply system during constant-load exercise in the supine position. The main exercises which were carried in supine position were moderate at an intensity corresponding to 80% of ventilatory threshold (VT) and heavy at an intensity corresponding to 20% of the difference between VT and peak VO2. Oxygenation level was obtained from inactive muscle by near-infrared spectroscopy (NIRS). This index is used to express the distribution of oxygen supply to inactive muscle during exercise [19]. After an exponential rise in VO2 (primary component), VO2 during moderate exercise reached a steady state, while during heavy exercise it continued to increase gradually (slow component). The HR kinetics which reflected systemic O2 supply in the supine position was similar to that of VO2 in main exercise tests. However, time constants of primary and slow components in VO2 were not significantly related to those in HR in each exercise mode. Furthermore, oxygenation level decreased after about 0.5 min from the onset of exercise and showed a minimum value at about 2 min and then recovered to the initial level during moderate and heavy exercises. Since there were no significant correlation coefficients in the time constant between VO2 and HR in each component in each exercise mode and since O2 supply to active muscle is affected by systemic O2 supply and distribution of O2 supply to inactive muscle, it is unlikely that VO2 is related to O2 supply to active muscle in supine position.
Octree-based Robust Watermarking for 3D Model
Su Cai,Xukun Shen
Journal of Multimedia , 2011, DOI: 10.4304/jmm.6.1.83-90
Abstract: Three robust blind watermarking methods of 3D models based on Octree are proposed in this paper: OTC-W, OTP-W and Zero-W. Primary Component Analysis and Octree partition are used on 3D meshes. A scrambled binary image for OTC-W and a scrambled RGB image for OTP-W are separately embedded adaptively into the single child nodes at the bottom level of Octree structure. The watermark can be extracted without the original image and 3D model. Those two methods have high embedding capacity for 3D meshes. Meanwhile, they are robust against geometric transformation (like translation, rotation, uniform scaling) and vertex reordering attacks. For Zero-W, higher nodes of Octree are used to construct ‘Zero-watermark’, which can resist simplification, noise and remeshing attacks. All those three methods are fit for 3D point cloud data and arbitrary 3D meshes.
Valoración del componente comunicativo/relacional de la práctica enfermera en Atención Primaria: El cuestionario GATHA-ENFERMERíA
López-Santos,Valle; Sánchez-Ramos,José Luis; Toronjo-Gómez,ángela; Pedregal-González,Miguel; Rojas-Oca?a,María Jesús; Contreras-Martín,ángela;
Index de Enfermería , 2008, DOI: 10.4321/S1132-12962008000300005
Abstract: in addition to a core skill in nursing practice, communication is one of the most relevant variables in the satisfaction of the users with the health services. objective: to create an instrument to assess the communication/relationship component in nursing practice in primary care. method: adaptation of the gatha-base by nominal group, proof of judges and pilot study. validation through 158 video-recorded consultations. items sampling by experts judgement, item/total correlation coefficient and change in the cronbach's alpha. internal consistency through the cronbach's alpha; intra and inter-observer reliability by graphic analysis (bland-altman). results: an observational guide of 68 items is obtained with a level of consensus superior to 75% amongst the experts for all the items. after the validation, a tool (gatha-enfermeria) is created consisting of 35 items organised in 3 categories, with a cronbach?s alpha of 0,843. the inter and intra-observer concordance are acceptable and with a pattern of random distribution. conclusion: the outcome is wide validity of contents as well as high consensus. the tool has good internal consistency and test-retest reliability with capability to guide different aspects in clinical nursing practice.
Imran Khan Pathan, Abdulbari Ahmed Ali and Ramteke R.J.
Advances in Computational Research , 2012,
Abstract: This paper presents an approach for recognition of offline handwritten isolated Urdu character based on Invariant Moments. Handwritten Urdu character recognition is lagging behind due to segmentation dilemma and complexity of Urdu letter writing. An attempt is made to apply Moment Invariant technique followed by Primary and secondary component separation. The Urdu letters were grouped into single component and multi-component characters. If letter is multi-component then Secondary component were separated from primary component. SVM is adopted for classification and position of secondary component (Above, Below and middle) is considered for recognition. For each of 46 characters 200 image samples were used for training and 600 for testing respectively. In this manner overall 36800 handwritten characters were used to apply the technique. Overall performance rate is found to be 93.59% for all offline handwritten isolated Urdu characters. It is possible to enhance the accuracy of system by combining more structural and statistical features.
The Establishment and Comprehensive Evaluation of the Desulfurization Feature Index System of Limestone

系统工程理论与实践 , 1998,
Abstract: 采集18个产地的石灰石样品,对其进行了脱硫特性三项指标A(热重分析测试)、K(模拟实验台测试)、G(模拟实验台测试)的测定,分别按着各项活性指标的大小,把石灰石脱硫特性的优劣分为四级,并且建立了石灰石主要化学成分与各项活性指标的预测模型;利用主成分分析对各项活性指标赋权,通过与理想点的贴近度给出各样品关于三项活性指标的综合得分,从而对石灰石脱硫特性的优劣进行综合评价,以便应用于锅炉烟气脱硫系统。
How do selective attentional processes contribute to maintenance and recall in children’s working memory capacity?
Hannah E. Roome,John N. Towse,Christopher Jarrold
Frontiers in Human Neuroscience , 2014, DOI: 10.3389/fnhum.2014.01011
Abstract: The development of working memory capacity is considered from the perspective of the active maintenance of items in primary memory (PM) and a cue-dependent search component, secondary memory (SM). Using, free recall, plus a more novel serial interleaved items task, age-related increases in PM estimates were evident in both paradigms. In addition to this, age-related improvements in attentional selectivity were observed, indexed by the recall of target and non-target information respectively. To further characterize PM, presentation modality was varied in the serial interleaved items task (auditory, visual and dual presentation). Developmental differences were found in the effectiveness of presentation formats. Older children’s recall was enhanced by the combination of labeled visual items and enduring auditory information, whilst the same format was detrimental to younger children’s recall of target information. The present results show how estimates of PM and SM in children relate to the development of working memory capacity, but measurement of these constructs in children is not straightforward. Data also points to age related changes in selective attention, which in turn contributes to children’s ability to process and maintain information in working memory.
Review of Children’s Identity Construction via Narratives  [PDF]
Jiryung Ahn
Creative Education (CE) , 2011, DOI: 10.4236/ce.2011.25060
Abstract: Understanding oneself is a fundamental human concern that starts early and continues throughout life. Identity construction is also a life-long process, but early childhood is the critical period for laying the foundation. Children’s identity construction proceeds through diverse perspectives which do not necessarily follow developmental steps. These perspectives include how children view themselves in relation to others through narratives, and how they embody themselves in the peer interactions of peer group and school. Self-identity is changed and transformed through interactions with environment and diverse experiences. The various ways children construct their identities reveal their efforts to “become.” Understanding who we are in early childhood opens the door to acknowledging ourselves as significant human beings.
The low frequency electromagnetic field on the rat EEG  [PDF]
Samira M. Sallam
Journal of Biophysical Chemistry (JBPC) , 2012, DOI: 10.4236/jbpc.2012.33026
Abstract: The aim of the present study was to find out the effects of low frequency electromagnetic field (EMF) 50 Hz - 10 mT on the rat electroencephalogram (EEG) recorded from the rat brain cortex and from the skull surface. The rats were, whole body, exposed to this EMF intensity one hour daily for 7 days. Recovery study was done after one week from stopping the EMF exposure. The effects of the filed were estimated by compression of the averaged EEG frequency spectra in the range of frequencies between 0.2 - 0.7 Hz and by comparison of amplitude of EEG waves in control, exposed to EMF and recovery animals. Statistically significant effects of EMF were observed both in EEG amplitude and power reduction at most EEG frequencies. Also, noticeable variations were observed in normal values of maximum amplitude and number of successive EEG epochs recorded from brain and skull surfaces after exposure to ELF magnetic fields. These results show that a weak low EMF can influence the spontaneous electrical rat brain activity in the animals subjected to the EMF.
Research and Design of UUV Navigation and Control Integrative Simulation System Based on Component  [PDF]
Shengjie Wang, Fengju Kang
Intelligent Information Management (IIM) , 2012, DOI: 10.4236/iim.2012.45027
Abstract: This paper uses the component-based technology and the object oriented simulation technology to analyze the UUV navigation and control integration simulation system. We divide the system into components based on its structure, and describe every component using active diagram. By using the component-based technology, the system described here is easier to extended and be reused. At last, it realizes the whole UUV integrated navigation simulation course using the system to validate the availability.
Evaluation of a teacher-led physical activity curriculum to increase preschooler physical activity  [PDF]
Margaret Dunn-Carver, Lizzy Pope, Gregory Dana, Anne Dorwaldt, Brian Flynn, Janice Bunn, Jean Harvey-Berino
Open Journal of Preventive Medicine (OJPM) , 2013, DOI: 10.4236/ojpm.2013.31018
Abstract: Preschool students are generally sedentary at school, and few interventions have addressed whether teacher-led activities can increase physical activity at preschools. The current study aimed to increase physical activity in preschool children enrolled in childcare centers by training childcare providers to deliver a physical activity curriculum. A within-group pre-test/post-test design was used including 32 children at 4 preschools. A teacher-led physical activity curriculum, the Coordinated Approach to Child Health Early Childhood Education Curriculum (CEC) was implemented in each childcare center for six weeks. Activity levels of participants were monitored through the use of accelerometers and direct observation for approximately five hours pre- and post-intervention. Time spent in moderate/vigorous physical activity in preschoolers in three of the four preschools suggested a positive trend increasing from 34.5% ± 13.2% baseline to 39.3% ± 15.4% at follow-up (p = 0.10). Teachers from all four centers reported spending 24.6 ± 13.0 minutes per activity session with up to two activity sessions completed per day. These results justify larger trials to determine the impact of a teacher-led physical activity curriculum on the intensity and duration of preschool students’ physical activity at school.
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