bluuebunny/crossref_metadata_2025_split huggingface dataset:
Disciplined Rebels: The Revolution of 1880 in Buenos Aires
Authors: YABLON ARIEL 
Published: July 2008

AbstractThis article studies the relationship between electoral processes, popular mobilisation, and revolutionary movements in Argentina at the end of the nineteenth century. Focusing on the revolution of 1880, it is argued that the fraud in favour of General Julio A. Roca, that was perceived to have occurred in the presidential election of that year, resulted in the mobilisation of vast sectors of the Buenos Aires population and the organisation of militias. By analysing the social composition, organisation, and sources of recruitment of these militias, the article claims that although personal allegiance, clientelism and coercion played a role in this mobilisation, these factors are not sufficient to explain the popularity of the movement. The revolution owed its wide and active support to the claims of its leaders, who centred their discourse on defending the purity of suffrage and the rights of citizens to bear arms in order to protect their rights and freedoms.
Eradication Efforts, the State, Displacement and Poverty: Explaining Coca Cultivation in Colombia during Plan Colombia
Authors: DION MICHELLE L. , RUSSLER CATHERINE 
Published: July 2008

AbstractThis study models the sub-national pattern of coca cultivation in Colombia following the implementation of Plan Colombia (2001–2005). The results suggest that aerial eradication reduces coca cultivation primarily through creation of significant displacement and that coca cultivation is less intense in areas with a significant state presence. Further, coca cultivation appears to be more common in less developed, agricultural regions where access to legal markets precludes other forms of agriculture. Poverty has a significant, non-linear effect on coca cultivation; cultivation is most intense in regions of moderate poverty. Based on the findings, efforts to reduce coca cultivation should emphasise developing local public infrastructure and market access in conjunction with poverty reduction efforts and investment in alternative development.
The Foreign Direct Investments of Spanish Multinational Enterprises in Latin America, 1989–2005
Authors: TORAL PABLO 
Published: July 2008

AbstractThe inflow of Spanish investment in Latin America after 1989 was the result of a strategy by the managers of seven leading firms to gain access to new markets and to become world leaders in their industry, by applying the know-how that they had developed in Spain during the period of rapid economic modernisation in the 1980s. This article examines the context for these investments in Spain and in Latin America and provides a constructivist theoretical framework to explain them. It analyses seven firms in four industries (BBVA and SCH in banking, Repsol-YPF in oil and natural gas, Endesa, Iberdrola and Unión Fenosa in public utilities, and Telefónica in telecommunications). The knowledge and techniques that developed in Spain in the 1980s, it is argued, gave them significant advantages in Latin American markets during the period of liberalisation and privatisation in the 1990s. The Spanish government played a significant role in this process, by promoting the growth of large firms in the service industries through mergers and acquisition, protecting their domestic market, and encouraging their investments overseas.
Autonomous target capturing of free-floating space robot: Theory and experiments
Authors: Xu Wenfu , Liang Bin , Li Cheng , Liu Yu , Xu Yangsheng 
Published: July 2008

SUMMARYSpace robotic systems are expected to play an increasingly important role in the future. Unlike on the earth, space operations require the ability to work in the unstructured environment. Some autonomous behaviors are necessary to perform complex and difficult tasks in space. This level of autonomy relies not only on vision, force, torque, and tactile sensors, but also the advanced planning and decision capabilities. In this paper, the authors study the autonomous target capturing from the issues of theory and experiments. Firstly, we deduce the kinematic and dynamic equations of space robotic system. Secondly, the visual measurement model of hand–eye camera is created, and the image processing algorithms to extract the target features are introduced. Thirdly, we propose an autonomous trajectory planning method, directly using the 2D image features. The method predicts the target motion, plans the end-effector's velocities and solves the inverse kinematic equations using practical approach to avoid the dynamic singularities. At last, numeric simulation and experiment results are given. The ground experiment system is set up based on the concept of dynamic simulation and kinematic equivalence. With the system, the experiments of autonomous capturing a target by a free-floating space robot, composed of a 6-DOF manipulator and a satellite as its base, are conducted, and the results validate the proposed algorithm.
Influence of cultivation, settlements and water sources on wildlife distribution and habitat selection in south-east Kajiado, Kenya
Authors: MWORIA J. K. , KINYAMARIO J. I. , GITHAIGA J. M. 
Published: July 2008

SUMMARYIn Kenya, lands surrounding wildlife protected areas (PAs), referred to as dispersal areas, have undergone widespread land use changes, but these have been little studied. This study investigated impacts of different land use types on wildlife distribution and composition. Transect data from stratified random sampling based on land use and vegetation type were analysed using correlation and canonical correspondence analysis (CCA). Household density and cultivation intensity were negatively correlated with grass cover and were greatest on small-scale farms and lowest in a dedicated PA. Three patterns of wildlife distribution were identified. Wildlife density in communal grazing and the PA was significantly higher than on other land use types. While most wildlife used pastoral ranches in the wet season, larger herbivores moved to the PA during the dry season. Wildlife density along the grass cover gradient, which was a disturbance gradient, was dome shaped, indicating that wildlife tolerated moderate levels of disturbance. The primary factors influencing wildlife distribution were vegetation type and proximity to water sources in the dry and wet seasons, respectively. The apparent anomaly in the wet season is attributed to wildlife moving from Chyulu, which lacked seasonal ponds, to the lowland Masaai ranches, which had plenty of ponds. In both seasons, cattle density was the most important secondary factor. To mitigate declining wildlife trends, management should ensure a heterogeneity of vegetation types is maintained and wildlife retain access to seasonal water sources.
Molecular characterization and epidemiology of the highly pathogenic avian influenza H5N1 in Nigeria
Authors: FASINA F. O. , BISSCHOP S. P. R. , JOANNIS T. M. , LOMBIN L. H. , ABOLNIK C. 
Published: July 2008

SUMMARYAvian influenza caused infection and spread throughout Nigeria in 2006. Carcass samples (lung, liver, spleen, heart, trachea and intestine) from the different regions of Nigeria were processed for virus isolation. Infective allantoic fluids were tested for avian influenza viruses (AIV) and Newcastle disease virus using monospecific antisera. Thirty-five isolates were generated and characterized molecularly using the haemagglutinin gene. The molecular analysis indicated that different sublineages of the highly pathogenic avian influenza (HPAI) H5N1 viruses spread throughout Nigeria. We compared the Nigerian isolates with others from Africa and results indicated close similarities between isolates from West Africa and Sudan. Some of the analysed viruses showed genetic drift, and the implications of these for future epidemiology and ecology of avian influenza in Africa require further evaluation. The spread of primary outbreaks was strongly linked to trade (legal and illegal), live bird markets, inappropriate disposal, and poorly implemented control measures. No strong correlation existed between wild birds and HPAI H5N1 in Nigeria.
G-Intersection Theorems for Matchings and Other Graphs
Authors: JOHNSON J. ROBERT , TALBOT JOHN 
Published: July 2008

If G is a graph with vertex set [n] then $\mathcal{A}\subseteq 2^{[n]}$ is G-intersecting if, for all $A,B\in \mathcal{A}$, either A ∩ B ≠ ∅ or there exist a ∈ A and b ∈ B such that a ~Gb.The question of how large a k-uniform G-intersecting family can be was first considered by Bohman, Frieze, Ruszinkó and Thoma [2], who identified two natural candidates for the extrema depending on the relative sizes of k and n and asked whether there is a sharp phase transition between the two. Our first result shows that there is a sharp transition and characterizes the extremal families when G is a matching. We also give an example demonstrating that other extremal families can occur.Our second result gives a sufficient condition for the largest G-intersecting family to contain almost all k-sets. In particular we show that if Cn is the n-cycle and k > αn + o(n), where α = 0.266. . . is the smallest positive root of (1 − x)3(1 + x) = 1/2, then the largest Cn-intersecting family has size $(1-o(1))\binom{n}{k}$.Finally we consider the non-uniform problem, and show that in this case the size of the largest G-intersecting family depends on the matching number of G.
Immigration and Obesity Among Lower Income Blacks
Authors: Bennett Gary G. , Wolin Kathleen Y. , Askew Sandy , Fletcher Robert , Emmons Karen M. 
Published: July 2008

AbstractObjective: Our objective was to examine the associations of nativity, immigrant generation, and language acculturation with obesity among lower income black adult men and women.Research Methods and Procedures: Data from 551 black adult men and women were collected from participants in the Healthy Directions‐Health Centers Study. Race/ethnicity and nativity were self‐reported. Language acculturation was defined using participants’ first language, preferred reading language, and language spoken at home. Mixed model logistic regression models were estimated to account for within‐health center clustering.Results: Foreign‐born blacks had a lower obesity risk, compared with all U.S.‐born participants, in multivariable analyses [odds ratio (OR) = 0.57, 95% confidence interval (CI), 0.38, 0.84]. Among U.S.‐born participants, those with foreign‐born parents were significantly less likely to be obese than individuals with U.S.‐born parents (OR = 0.54; 95% CI, 0.37, 0.80). Low‐moderate language acculturation also decreased the odds of being obese (OR = 0.45; 95% CI, 0.23, 0.88).Discussion: Our findings suggest a protective effect of foreign‐born status and low‐moderate language acculturation on obesity risk among lower income black immigrants. These data highlight the importance of more frequently examining nativity in obesity‐related research conducted among blacks.
Endothelial Activation Markers and Their Key Regulators after Restrictive Bariatric Surgery
Authors: Nijhuis Jeroen , van Dielen Francois M.H. , Fouraschen Suomi M.G. , van, Den Broek Maartje A.J. , Rensen Sander S.M. , Buurman Wim A. , Greve Jan Willem M. 
Published: July 2008

AbstractObjective: Increased plasma levels of endothelial activation markers in obese subjects reflect the positive association between cardiovascular diseases and obesity. The pro‐inflammatory state associated with obesity is thought to play a major role in endothelial cell activation in severely obese individuals. Previous studies demonstrated that long‐term weight loss after bariatric surgery is accompanied by a decreased proinflammatory state. However, little is known about the long‐term effects of bariatric surgery on endothelial cell activation.Research Methods and Procedures: Plasma levels of soluble intercellular adhesion molecule‐1 (sICAM‐1), soluble endothelial selectin (sE‐selectin), and soluble vascular cell adhesion molecule‐1 (sVCAM‐1), all markers of endothelial cell activation, and of their regulators adiponectin and resistin were measured at different time‐points postoperatively in 26 consecutive patients who underwent restrictive surgery, with a follow‐up of 2 years.Results: During the first 6 months after bariatric surgery, sE‐selectin levels decreased. Despite substantial weight loss, sICAM‐1 and sVCAM‐1 plasma levels did not decrease significantly. After 24 months, sICAM‐1 levels were significantly decreased, whereas sE‐selectin levels were further decreased. However, sVCAM‐1 levels remained elevated. Adiponectin levels did not change significantly during the first 6 months after bariatric surgery, whereas resistin levels increased. After 24 months, adiponectin levels were similar to normal‐weight controls, but resistin levels remained high.Discussion: Reductions in plasma levels of different markers of endothelial activation after bariatric surgery show different temporal patterns, suggesting that distinct mechanisms are involved in their regulation. Although not all endothelial activation markers normalize after bariatric surgery, our findings suggest that bariatric surgery can reduce endothelial activation in the long term.
Inhibition of the Actions of Peroxisome Proliferator‐activated Receptor α on Obesity by Estrogen
Authors: Jeong Sunhyo , Yoon Michung 
Published: July 2008

AbstractObjective: To determine whether the major ovarian factor estrogen modulates peroxisome proliferator‐activated receptor (PPAR) α actions on obesity and to investigate the mechanism by which estrogen regulates PPARα actions.Research Methods and Procedures: Female ovariectomized mice were randomly divided into four groups (n = 8/group). After they were treated with combinations of high fat, fenofibrate (FF), or 17β‐estradiol (E) for 13 weeks, variables and determinants of obesity and lipid metabolism were measured using in vivo and in vitro approaches.Results: When female ovariectomized mice were given a high‐fat diet with either FF or E, body weight gain and white adipose tissue mass were significantly reduced and serum lipid profiles were improved compared with control mice fed a high‐fat diet alone. When mice were concomitantly treated with FF and E, however, E reversed the effects of FF on body weight gain, serum lipid profiles, and hepatic PPARα target gene expression. Consistent with the in vivo data, E not only decreased basal levels of PPARα reporter gene activation but also significantly decreased Wy14,643‐induced luciferase reporter activity. In addition, inhibition of PPARα functions by E did not seem to occur by interfering with the DNA binding of PPARα.Discussion: Our results demonstrate that in vivo and in vitro treatment of estrogen inhibited the actions of FF‐activated PPARα on obesity and lipid metabolism through changes in the expression of PPARα target genes, providing evidence that FF does not regulate obesity in female mice with functioning ovaries.
Visceral and Subcutaneous Adiposity Measurements in Adults: Influence of Measurement Site
Authors: Ellis Kenneth J. , Grund Birgit , Visnegarwala Fehmida , Thackeray Lisa , Miller Collin G. , Chesson Charles E. , El‐Sadr Wafaa , Carr Andrew ,   Strategies for Management of Anti‐Retroviral Therapy (SMART) Study Group
Published: July 2008

AbstractObjective: Excess abdominal adiposity is a known risk factor for cardiovascular diseases. Computed tomography can be used to examine the visceral (VAT) and subcutaneous (SAT) components of abdominal adiposity, but it is unresolved whether single‐slice or multi‐slice protocols are needed.Research Method and Procedures: Nine computed tomography scans were obtained in the lumbar spine region of 24 adults. The nine slices were obtained at three intervertebral positions (L2–L3, L3–L4, and L4–L5) and at 7 mm above and below these locations. Intra‐site and inter‐site differences in SAT, VAT, total adipose tissue, and the VAT/SAT ratio were examined using ANOVA and confidence intervals for pairwise differences between means.Results: Intervertebral SAT values increased from 103.1 ± 50.9 (standard deviation) cm2 at L2–L3 to 153.3 ± 68.8 cm2 at L4–L5, whereas the corresponding VAT values decreased from 164.3 ± 125.4 to 126.0 ± 82.7 cm2. The VAT/SAT ratio was not constant, decreasing from 1.8 ± 1.4 to 0.9 ± 0.7. Repeated‐measures ANOVA indicated significant inter‐ and intra‐site differences (p ≤ 0.02) for SAT, VAT, and the VAT/SAT ratio at L3−L4 and L4−L5 (p < 0.001).Discussion: These differences show the limitation of using a single‐slice assessment of abdominal fat distribution, both for a subject and between subjects. Furthermore, the sizeable differences in the intra‐site scans indicate that precise repositioning is needed for longitudinal studies. In summary, our findings suggest that a multi‐site imaging protocol may provide a more complete assessment of abdominal fat stores and distribution than use of a single site.
Does a High‐protein Diet Improve Weight Loss in Overweight and Obese Children?
Authors: Gately Paul J. , King Neil A. , Greatwood Hannah C. , Humphrey Lauren C. , Radley Duncan , Cooke Carlton B. , Hill Andrew J. 
Published: July 2008

AbstractObjective: To evaluate the effect of a high‐protein diet on anthropometry, body composition, subjective appetite, and mood sensations in overweight and obese children attending a residential weight‐loss camp.Research Methods and Procedures: Children (120; BMI, 33.1 ± 5.5 kg/m2; age, 14.2 ± 1.9 years) were randomly assigned to either a standard or high‐protein diet group (15% vs. 22.5% protein, respectively). All children were assessed at baseline and at the end of the camp for anthropometry, body composition, blood pressure, biochemical variables (n = 27), and subjective appetite and mood sensations (n = 50).Results: Attendance at the weight‐loss camp resulted in significant improvements in most measures. Campers lost 5.5 ± 2.9 kg in body weight (p < 0.001) and 3.8 ± 5.4 kg in fat mass (p < 0.001) and reduced their BMI standard deviation score by 0.27 ± 0.1 (p < 0.001) and their waist circumference by 6.6 ± 2.8 cm (p < 0.001). Subjective sensations of hunger increased significantly over the camp duration, but no other changes in appetite or mood were observed. There were no significant differences between the two diets on any physical or subjective measures.Discussion: Weight‐loss camps are effective in assisting children to lose weight and improve on a range of health outcomes, independently of the protein content of the diet. The implications of an increase in hunger associated with weight loss needs to be considered. Further work is warranted to investigate whether higher levels of dietary protein are feasible or effective in longer‐term weight‐loss interventions of this type.
The Effect of Large Portion Sizes on Energy Intake Is Sustained for 11 Days
Authors: Rolls Barbara J. , Roe Liane S. , Meengs Jennifer S. 
Published: July 2008

AbstractObjective: A previous study showed that increasing the portion sizes of all foods led to an increase in energy intake that was sustained over 2 days. The objective of the present study was to determine whether participants would compensate for excess energy intake or continue to overeat when portion sizes were increased for 11 days.Research Methods and Procedures: Participants in the study were 23 normal‐weight and overweight participants (10 women and 13 men). All of their foods and caloric beverages were provided during two different periods of 11 consecutive days, which were separated by a 2‐week interval. During one period, standard portions of all items were served; during the other, all portion sizes were increased by 50%.Results: The 50% increase in portion sizes resulted in a mean increase in daily energy intake of 423 ± 27 kcal (p < 0.0001), which did not differ significantly between women and men. This increase was sustained for 11 days and did not decline significantly over time, leading to a mean cumulative increase in intake of 4636 ± 532 kcal. A significant effect of portion size on intake was seen at all meals and in all categories of foods except fruit (as a snack) and vegetables. The effect of portion size on intake was not influenced by the body weight status of participants.Discussion: These results strengthen the evidence suggesting that increased portions contribute to the overconsumption of energy and to excess body weight.
Parent Overweight Predicts Daughters’ Increase in BMI and Disinhibited Overeating from 5 to 13 Years
Authors: Francis Lori A. , Ventura Alison K. , Marini Michele , Birch Leann L. 
Published: July 2008

AbstractObjective: To assess whether parental overweight status and disinhibited overeating are predictive of daughters’ accelerated weight gain and disinhibited overeating.Research Methods and Procedures: Participants were part of a longitudinal study of girls (N = 197) and their parents. Measured height and weight were used to calculate BMI [weight (kilograms)/height (meters)2]. Parents’ disinhibited eating behavior was assessed using the Eating Inventory. Girls’ disinhibited eating was assessed using a behavioral protocol to measure eating in the absence of hunger. Girls were classified based on parental overweight at study entry into four groups: neither, mother only, father only, or both parents overweight.Results: Girls with both parents overweight had the most rapid increases in BMI from 5 to 13 years of age; BMI increased most slowly among the neither parent overweight group, with intermediate increases in BMI among mother only and father only overweight groups. Daughters with both parents overweight at study entry were eight times more likely to be overweight at age 13, controlling for daughters’ weight at age 5. Girls with both parents overweight had higher levels of disinhibited eating across all ages than all other groups. Although girls in all parental weight status groups showed increases in disinhibited eating over time, girls with both parents overweight had larger increases in disinhibited eating over time compared with all other groups.Discussion: Girls growing up in families differing in parental overweight had divergent developmental trajectories for BMI and disinhibited overeating. Findings reveal the need to focus prevention efforts on overweight parents of young children.
Hispanic and Asian Pubertal Girls Have Higher Android/Gynoid Fat Ratio Than Whites
Authors: Novotny Rachel , Going Scott , Teegarden Dorothy , Van Loan Marta , McCabe George , McCabe Linda , Daida Yihe G. , Boushey Carol J. ,   The ACT Research Team
Published: July 2008

AbstractObjective: To examine differences in body size, composition, and distribution of body fat among Hispanic, white, and Asian adolescents.Research Methods and Procedures: This included cross‐sectional data from the baseline sample of the Adequate Calcium Today trial. Participants included 180 Asian, 234 Hispanic, and 325 white girls 11.8 ± 0.05 years of age from Arizona, California, Hawaii, Indiana, Ohio, and Nevada. Anthropometric and DXA measurements (Lunar Prodigy) were standardized across sites. Tanner pubertal stage was self‐selected from line drawings. Physical activity was assessed by a validated questionnaire. Comparisons between ethnic groups were examined using contrasts in the context of a general linear model.Results: Controlling for pubertal stage and study site only, Asians weighed less than Hispanics and were shorter than Hispanics and whites. Controlling for pubertal stage, height, weight, and study site, Asians had shorter leg lengths, smaller waist circumference, longer trunk lengths, more lean mass, less total fat mass, and less gynoid fat mass than Hispanics and whites; Asians had larger bitrochanteric width than whites; Asians had smaller DXA‐derived android fat mass than Hispanics; and whites had smaller mean android/gynoid fat ratio than Hispanics. However, whites had a smaller android/gynoid fat ratio than both Asians and Hispanics in a model that adjusted for ethnicity, pubertal stage, bitrochanteric width, waist circumference, trunk length, log of physical activity, and study site, which explained 77% of the variation.Discussion: Ethnic differences in fat distribution are partially explained by differences in skeletal dimensions.