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Search Results: 1 - 10 of 9295 matches for " Zhaoxing Pan "
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A Novel Approach to Calculating Energy Density from Food Images Reduces Analysis Time and Cost  [PDF]
Zhaoxing Pan, Tyson Marden, Archana Mande, Janine Higgins
Food and Nutrition Sciences (FNS) , 2019, DOI: 10.4236/fns.2019.102018
Abstract: Traditional methods of self-reported food intake are characterized by limitations such as underreporting, high participant burden, and high cost. With the development of automated devices to capture food images and monitor food intake, an accurate and efficient method to estimate energy intake is needed. This study aimed to develop an accurate and time efficient method for estimating energy intake from food images by defining a simple and less burdensome way of estimating energy density (ED). Four experimental methods, exchange, food score-long, food score-short, and meal, were developed to estimate ED based on nutrient composition, water content, and relative proportion of foods in images, using different approaches. Three trained nutritionists analyzed 29 food images for ED using each method. All four experimental methods were compared to the full visual method in which a nutritionist estimated the portion size of each food consumed from dietary intake images and conducted data entry and analysis software. All experimental methods overestimated ED compared to the FVM but the meal method exhibited the closest agreement, lowest variance for ED, and significantly decreased analysis time by an average of 53 s/meal (p = 0.03). The meal method was used for full-scale validation by analyzing 213 food images against weighed food records. The meal method reduced analysis time by 69% (120 s; p ≤ 0.0001) and over-estimated ED by an average of 1.56 ± 3.17 J/g (p < 0.0001) compared to the FVM and 1.67 ± 3.09 J/g (p < 0.0001) compared to the WFR. The meal method is a novel and quick approach to calculate ED from dietary intake images.
Increased Physical Activity Not Decreased Energy Intake Is Associated with Inpatient Medical Treatment for Anorexia Nervosa in Adolescent Females
Janine Higgins, Jennifer Hagman, Zhaoxing Pan, Paul MacLean
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0061559
Abstract: There is a dearth of data regarding changes in dietary intake and physical activity over time that lead to inpatient medical treatment for anorexia nervosa (AN). Without such data, more effective nutritional therapies for patients cannot be devised. This study was undertaken to describe changes in diet and physical activity that precede inpatient medical hospitalization for AN in female adolescents. This data can be used to understand factors contributing to medical instability in AN, and may advance rodent models of AN to investigate novel weight restoration strategies. It was hypothesized that hospitalization for AN would be associated with progressive energy restriction and increased physical activity over time. 20 females, 11–19 years (14.3±1.8 years), with restricting type AN, completed retrospective, self-report questionnaires to assess dietary intake and physical activity over the 6 month period prior to inpatient admission (food frequency questionnaire, Pediatric physical activity recall) and 1 week prior (24 hour food recall, modifiable activity questionnaire). Physical activity increased acutely prior to inpatient admission without any change in energy or macronutrient intake. However, there were significant changes in reported micronutrient intake causing inadequate intake of Vitamin A, Vitamin D, and pantothenic acid at 1 week versus high, potentially harmful, intake of Vitamin A over 6 months prior to admission. Subject report of significantly increased physical activity, not decreased energy intake, were associated with medical hospitalization for AN. Physical activity and Vitamin A and D intake should be carefully monitored following initial AN diagnosis, as markers of disease progression as to potentially minimize the risk of medical instability.
One Improved Collaborative Filtering Method Based on Information Transformation
Zhaoxing Liu,Ning Zhang
Computer and Information Science , 2010, DOI: 10.5539/cis.v4n1p186
Abstract: In this paper, we propose a novel method combined classical collaborative filtering (CF) and bipartite network structure. Different from the classical CF, user similarity is viewed as personal recommendation power and during the recommendation process; it will be redistributed to different users. Furthermore, a free parameter is introduced to tune the contribution of the user to the user similarity. Numerical results demonstrate that decreasing the degree of user to some extent in method performs well in rank value and hamming distance. Furthermore, the correlation between degree and similarity is concerned to solved the drastically change of our method performance.
The Feasibility of Delayed Repair of Facial Nerve Trauma-electrophysiological Studies and Research of Neurons and Specificity of Regeneration
Hu Jiongjiong,Zhou Liang,Ma Zhaoxing
International Journal of Pharmacology , 2013,
Abstract: To study aimed to evaluate the feasibility of delayed repair of facial nerve trauma in case immediate repair was not possible. Guinea pigs were randomly assigned to one of eight groups; normal group, group of immediate Facial-facial Anastomosis (FFA), group of delayed FFA for 7 days, group of delayed FFA for 14 days, group of delayed FFA for 21 days, group of delayed FFA for 30 days, group of delayed FFA for 60 days and group of delayed FFA for 90 days, by turns. The survival time was 2 months after nerve suture. The group of immediate FFA and the group of delayed FFA for 7 days had shorter latency than other groups of delayed FFA (p<0.05). The amplitude of the group of delayed FFA for 7 days was larger than that of immediately sutured and other delayed sutured ones. The group of delayed FFA for 60 and 90 days had longer latency and smaller amplitude than the group of immediate FFA and other group of delayed FFA. The facial neurons labeled by HRP in immediate suture group were more than that in any other delayed suture group (p<0.05). There was no significant difference among groups of delayed FFA for 7, 14, 21 and 30 days (p = 0.326). Immediate repair of facial nerve trauma showed best results; however delayed nerve repair was also an option. The best curative effects were with repairs within 60 days.
Ambient temperature and coronary heart disease mortality in Beijing, China: a time series study
Zhaoxing Tian, Shanshan Li, Jinliang Zhang, Jouni Jaakkola, Yuming Guo
Environmental Health , 2012, DOI: 10.1186/1476-069x-11-56
Abstract: We examined the effects of temperature on CHD mortality using both time series and time-stratified case-crossover models. We also assessed the effects of temperature on CHD mortality by subgroups: gender (female and male) and age (age?>?=65 and age?<?65). We used a distributed lag non-linear model to examine the non-linear effects of temperature on CHD mortality up to 15 lag days. We used Akaike information criterion to assess the model fit for the two designs.The time series models had a better model fit than time-stratified case-crossover models. Both designs showed that the relationships between temperature and group-specific CHD mortality were non-linear. Extreme cold and hot temperatures significantly increased the risk of CHD mortality. Hot effects were acute and short-term, while cold effects were delayed by two days and lasted for five days. The old people and women were more sensitive to extreme cold and hot temperatures than young and men.This study suggests that time series models performed better than time-stratified case-crossover models according to the model fit, even though they produced similar non-linear effects of temperature on CHD mortality. In addition, our findings indicate that extreme cold and hot temperatures increase the risk of CHD mortality in Beijing, China, particularly for women and old people.There is strong evidence that extreme temperatures (e.g., cold spells and heat waves) have significant impacts on health [1,2]. Studies have shown that vulnerable people (e.g., elderly, children, and people with chronic diseases) will be affected greatly by extreme temperatures [3]. Coronary heart disease (CHD) patients constitute one of the largest groups of susceptible people [4-6]. As the second leading cause of cardiovascular death in the Chinese population, CHD accounts for 22% of cardiovascular deaths in urban areas and 13% in rural areas in China [7]. There is evidence that the incidence of CHD is steadily increasing in China [8], but the
Based on Bipartite Graph Label Gene Extraction Algorithm of Network Structure
Jiming Li,Ning Zhang,Zhaoxing Liu,Gengsheng Zhao
International Journal of Biology , 2011, DOI: 10.5539/ijb.v3n4p64
Abstract: Firstly we make a pretreatment to the original gene data, and analyze the information of sample gene graph by two steps. First step is removing the unrelated genes; Second step is use an extraction algorithm of label gene based on bipartite network structure to handle the candidate gene, and get gene interactive relationship network. Finally extracts some label gene form the gene interactive relationship network.
The Characteristic of Heat Wave Effects on Coronary Heart Disease Mortality in Beijing, China: A Time Series Study
Zhaoxing Tian, Shanshan Li, Jinliang Zhang, Yuming Guo
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0077321
Abstract: Background There is limited evidence for the impacts of heat waves on coronary heart disease (CHD) mortality in Beijing, capital city of China. Objectives We aimed to find a best heat wave definition for CHD mortality; and explore the characteristic of heat wave effects on CHD in Beijing, China. Methods We obtained daily data on weather and CHD mortality in Beijing for years 2000–2011. A quasi-Poisson regression model was used to assess the short-term impact of heat waves on CHD mortality in hot season (May–September), while controlling for relative humidity, day of the week, long-term trend and season. We compared 18 heat wave definitions by combining heat wave thresholds (87.5th, 90.0th, 92.5th, 95th, 97.5th, and 99th percentile of daily mean temperature) with different duration days (≥ 2 to ≥ 4 days), using Akaike information criterion for quasi-Poisson. We examined whether heat wave effects on CHD mortality were modified by heat wave duration and timing. Results Heat wave definition using 97.5th percentile of daily mean temperature (30.5 °C) and duration ≥ 2 days produced the best model fit. Based on this heat wave definition, we found that men and elderly were sensitive to the first heat waves of the season, while women and young were sensitive to the second heat waves. In general, the longer duration of heat waves increased the risks of CHD mortality more than shorter duration for elderly. The first two days of heat waves had the highest impact on CHD mortality. Women and elderly were at higher risks than men and young when exposed to heat waves, but the effect differences were not statistically significant. Conclusions Heat waves had significant impact on CHD mortality. This finding may have implications for policy making towards protecting human health from heat waves.
A Contextual Item-Based Collaborative Filtering Technology  [PDF]
Xueqing Tan, Pan Pan
Intelligent Information Management (IIM) , 2012, DOI: 10.4236/iim.2012.43013
Abstract: This paper proposes a contextual item-based collaborative filtering technology, which is based on the traditional item-based collaborative filtering technology. In the process of the recommendation, user’s important mobile contextual information are taken into account, and the technology combines with those ratings on the items in the users’ historical contextual information who are familiar with user’s current context information in order to predict that which items will be preferred by user in his or her current context. At the end, an experiment is used to prove that the technology proposed in this paper can predict user’s preference in his or her mobile environment more accurately.
The Impact of Macro Factors on the Profitability of China’s Commercial Banks in the Decade after WTO Accession  [PDF]
Qinhua Pan, Meiling Pan
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.29011
Abstract:

Profitability of China’s commercial banks has increased significantly since it joined the World Trade Organization (WTO). Constantly advancing of deepening the reform and increasingly fierce of international competition make us to be concerned more about macroeconomic factors. This paper makes an empirical analysis with a panel of 10 Chinese listed banks during the period 1998- 2012 to make a study of the potential impact of external factors may bring to China’s capital market. The results confirm that macroeconomic do have a substantial influence to the earning power of commercial banks, according to which some suggestions are made at the end of the paper.

Linearization of the Liouville Equation, Multiple Splits of the Chandler Frequency, Markowitz Wobbles, and Error Analysis  [PDF]
Cheh Pan
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.325095
Abstract: The rotation of the physical Earth is far more complex than the rotation of a biaxial or slightly triaxial rigid body can represent. The linearization of the Liouville equation via the Munk and MacDonal perturbation scheme has oversimplified polar excitation physics. A more conventional linearization of the Liouville equation as the generalized equation of motion for free rotation of the physical Earth reveals: 1) The reference frame is most essential, which needs to be unique and physically located in the Earth; 2) Physical angular momentum perturbation arises from motion and mass redistribution to appear as relative angular momentum in a rotating Earth, which excites polar motion and length of day variations; 3) At polar excitation, the direction of the rotation axis in space does not change besides nutation and precession around the invariant angular momentum axis, while the principal axes shift responding only to mass redistribution; 4) Two inertia changes appear simultaneously at polar excitation; one is due to mass redistribution, and the other arises from the axial near-symmetry of the perturbed Earth; 5) The Earth at polar excitation becomes slightly triaxial and axially near-symmetrical even it was originally biaxial; 6) At polar excitation, the rotation of a non-rigid Earth becomes unstable; 7) The instantaneous figure axis or mean excitation axis around which the rotation axis physically wobbles is not a principal axis; 8) In addition to amplitude excitation, the Chandler wobble possesses also multiple frequency-splits and is slow damping; 9) Secular polar drift is after the products of inertia and always associated with the Chandler wobble; both belong to polar motion; 10) The Earth will reach its stable rotation only after its rotation axis, major principal axis, and instantaneous figure axis or mean excitation axis are all completely aligned with each other to arrive at the minimum energy configuration of the system; 11) The observation of the multiple splits of the Chandler frequency is further examined by means of exact-bandwidth filtering and spectral analysis, which confirms the theoretical prediction of the linearized Liouville equation. After the removal of the Gibbs phenomenon from the polar motion spectra, Markowitz wobbles are also observed; 12) Error analysis of the ILS data demonstrates that the incoherent noises from the Wars in 1920-1945 are separable from polar motion and removable, so the ILS data are still reliable and useful for the study of the continuation of polar motion.
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