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Search Results: 1 - 10 of 85334 matches for " Noel W; "
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Drone Bombings in the Federally Administered Tribal Areas: Public Remote Sensing Applications for Security Monitoring  [PDF]
Katrina Laygo, Thomas W. Gillespie, Noel Rayo, Erin Garcia
Journal of Geographic Information System (JGIS) , 2012, DOI: 10.4236/jgis.2012.42018
Abstract: Drone bombing, as a US defense strategy in Pakistan, began under the George W. Bush administration as part of the “US War on Terrorism” and has accelerated under the Obama administration. The United States government has not confirmed the use of drones in the Federally Administered Tribal Areas of Pakistan. We identify the region within the Federally Administered Tribal Areas with the highest incidence of drone bombing activity and use QuickBird imagery to identify evidence of drone bombing damage. The city of Miram Shah in North Waziristan had the highest incidence of drone bombings before January 1, 2010. A systematic research in 1 km2 grids over the city of Miram Shah revealed potential damage of a drone bombing at one site, recent damage at one site, and an image of a drone over the landscape. Results suggest that drone bombings are very accurate and drone missions are common in the region. It is possible for the public to monitor drone bombings and other quality of life indicators in the Federally Administered Tribal Areas. The use of drones to monitor and attack enemy locations will most likely expand in the future.
The Methodology and Research Participation Experiences of Participants in the Aborted Suicide Attempt Study  [PDF]
Paul W. C. Wong, Noel C. F. Kwok, Konrad Michel, Gilbert K. H. Wong
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.81005
Abstract: The participants’ study participation experiences in an intensive research methodology that examined recent aborted suicide attempts were explored. Individuals aged 18 or above and whose suicide attempts were voluntarily aborted after the suicide crisis negotiation with the police negotiators were interviewed and followed up at 1 and 3 months after the initial interview. Eleven participants gave their consent to the Police Negotiation Cadre of the Hong Kong Police Force for further contact by the research team during June 2012 and December 2014. Nine aborted attempters completed the semi-structured interviews conducted by the research team about their suicide attempt processes and the events leading to that. Seven of them completed the 3 months follow up. The majority of the participants were positive about being approached to take part in the study. They found the experience of talking about their suicide attempts more positive than expected, and felt the study participation was useful for them and meaningful for the society. None of the participants reported being distressed by the recruitment method or the interviews. Results suggest that such sensitive non-treatment research when conducted ethically, participants could benefit from it.
Liver disease in pregnancy
Noel M Lee, Carla W Brady
World Journal of Gastroenterology , 2009,
Abstract: Liver diseases in pregnancy may be categorized into liver disorders that occur only in the setting of pregnancy and liver diseases that occur coincidentally with pregnancy. Hyperemesis gravidarum, preeclampsia/eclampsia, syndrome of hemolysis, elevated liver tests and low platelets (HELLP), acute fatty liver of pregnancy, and intrahepatic cholestasis of pregnancy are pregnancy-specific disorders that may cause elevations in liver tests and hepatic dysfunction. Chronic liver diseases, including cholestatic liver disease, autoimmune hepatitis, Wilson disease, and viral hepatitis may also be seen in pregnancy. Management of liver disease in pregnancy requires collaboration between obstetricians and gastroenterologists/hepatologists. Treatment of pregnancy-specific liver disorders usually involves delivery of the fetus and supportive care, whereas management of chronic liver disease in pregnancy is directed toward optimizing control of the liver disorder. Cirrhosis in the setting of pregnancy is less commonly observed but offers unique challenges for patients and practitioners. This article reviews the epidemiology, pathophysiology, diagnosis, and management of liver diseases seen in pregnancy.
Resolutions and Network Latencies Concerning a Voxel Telepresence Experience  [PDF]
Noel J. W. Park, Holger Regenbrecht
Journal of Software Engineering and Applications (JSEA) , 2019, DOI: 10.4236/jsea.2019.125011
Abstract: Recent advancements in computing research and technology will allow future immersive virtual reality systems to be voxel-based, i.e. entirely based on gap-less, spatial representations of volumetric pixels. The current popularity of pixel-based videoconferencing systems could turn into true telepresence experiences that are voxel-based. Richer, non-verbal communication will be possible thanks to the three-dimensional nature of such systems. An effective telepresence experience is based on the users’ sense of copresence with others in the virtual environment and on a sense of embodiment. We investigate two main quality of service factors, namely voxel size and network latency, to identify acceptable threshold values for maintaining the copresence and embodiment experience. We present a working prototype implementation of a voxel-based telepresence system and can show that even a coarse 64 mm voxel size and an overall round-trip latency of 542 ms are sufficient to maintain copresence and embodiment experiences. We provide threshold values for noticeable, disruptive, and unbearable latencies that can serve as guidelines for future voxel and other telepresence systems.
Floristic Composition, Diversity and Structure of the Rainforest in the Mayoko District, Republic of Congo  [PDF]
Margaretha W. van Rooyen, Noel van Rooyen, Edmond S. Miabangana, Gilbert Nsongola, Caroline Vasicek Gaugris, Jér?me Y. Gaugris
Open Journal of Forestry (OJF) , 2019, DOI: 10.4236/ojf.2019.91002
Abstract: Botanically, the Mayoko district is known only through anecdotal descriptions made in the colonial era. The present study was undertaken as part of the prerequisite for a mining feasibility study where a benchmark of the floristic composition, diversity and structure of the vegetation was needed to evaluate potential biodiversity offset areas and to guide species selection for post-mining re-vegetation. The study area comprised approximately 160,000 ha and 235 sample sites were surveyed using the Braun-Blanquet method of phytosociology. Diversity of each plant association was expressed in terms of various diversity parameters. Twelve associations were described and mapped. The associations ranged from highly disturbed and degraded to fairly intact forest associations. A wet to dry gradient and permanently inundated to temporary inundated gradient could also be distinguished. The approach followed here proved remarkably robust in illustrating the complexity in a topographically complex region of the Chaillu Massif. The data provided a high level of insight into the possible dynamics of the rainforest and indications as to possible successional pathways. This information provides a better level of understanding of forest structure and evolution potential than studies limited to trees, remote sensing carbon assessments, or time change series.
Estimating the cost-effectiveness of detecting cases of chronic hepatitis C infection on reception into prison
Andrew J Sutton, W John Edmunds, O Noel Gill
BMC Public Health , 2006, DOI: 10.1186/1471-2458-6-170
Abstract: A decision analysis model embedded in a model of the flow of IDUs through prison was used to estimate the cost effectiveness of a number of alternative case-finding strategies. The model estimates the average cost of identifying a new case of HCV from the perspective of the health care provider and how these estimates may evolve over time.The results suggest that administering verbal screening for a past positive HCV test and for ever having engaged in illicit drug use prior to the administering of ELISA and PCR tests can have a significant impact on the cost effectiveness of HCV case-finding strategies on prison reception; the discounted cost in 2017 being £2,102 per new HCV case detected compared to £3,107 when no verbal screening is employed.The work here demonstrates the importance of targeting those individuals that have ever engaged in illicit drug use for HCV testing in prisons, these individuals can then be targeted for future intervention measures such as treatment or monitored to prevent future transmission.Hepatitis C (HCV) is a blood-borne viral infection that affects the liver the causative agent of which was identified only in 1989[1]. The virus is spread when blood from an infected person gets into the bloodstream of another. In the UK blood donations have been screened for HCV since September 1991. Consequently, it is now very difficult to acquire HCV infection by blood transfusion. Unlike many other blood borne viruses, sexual transmission is thought to be relatively rare[2]. HCV is an important problem in current and previous injecting drug users (IDU)s who are exposed to the virus through the sharing of needles and injecting paraphernalia[3]. It has been shown that the prevalence of HCV infection in current and former IDUs in England and Wales is approximately 41%[4]. Co-infection of blood-borne viruses is also a problem for IDUs, it has been found for IDUs in England and Wales in 2000–2003 that approximately 30% of current IDUs were co-infected w
Genome-wide SNP identification in multiple morphotypes of allohexaploid tall fescue (Festuca arundinacea Schreb)
Melanie L Hand, Noel OI Cogan, John W Forster
BMC Genomics , 2012, DOI: 10.1186/1471-2164-13-219
Abstract: A bioinformatic pipeline was developed that successfully identified SNPs within genotypes from distinct tall fescue morphotypes, following the sequencing of 414 polymerase chain reaction (PCR) – generated amplicons using 454 GS FLX technology. Equivalent amplicon sets were derived from representative genotypes of each morphotype, including six Continental, five Mediterranean and one rhizomatous. A total of 8,584 and 2,292 SNPs were identified with high confidence within the Continental and Mediterranean morphotypes respectively. The success of the bioinformatic approach was demonstrated through validation (at a rate of 70%) of a subset of 141 SNPs using both SNaPshot? and GoldenGate? assay chemistries. Furthermore, the quantitative genotyping capability of the GoldenGate? assay revealed that approximately 30% of the putative SNPs were accessible to co-dominant scoring, despite the hexaploid genome structure. The sub-genome-specific origin of each SNP validated from Continental tall fescue was predicted using a phylogenetic approach based on comparison with orthologous sequences from predicted progenitor species.Using the appropriate bioinformatic approach, amplicon resequencing based on 454 GS FLX technology is an effective method for the identification of polymorphic SNPs within the genomes of Continental and Mediterranean tall fescue. The GoldenGate? assay is capable of high-throughput co-dominant SNP allele detection, and minimises the problems associated with SNP genotyping in a polyploid by effectively reducing the complexity to a diploid system. This SNP collection may now be refined and used in applications such as cultivar identification, genetic linkage map construction, genome-wide association studies and genomic selection in tall fescue. The bioinformatic pipeline described here represents an effective general method for SNP discovery within outbreeding allopolyploid species.
Nutritional status of urban schoolchildren of high and low socioeconomic status in Quetzaltenango, Guatemala
Groeneveld,Iris F.; Solomons,Noel W.; Doak,Colleen M.;
Revista Panamericana de Salud Pública , 2007, DOI: 10.1590/S1020-49892007000800003
Abstract: objective: the prevalence of overweight and obesity is growing in children in many developing countries, increasing chronic disease risk. our objective was to assess the prevalence of stunting, underweight, overweight, and obesity in schoolchildren 8 to 10 years old who were of high or low socioeconomic status (ses) in quetzaltenango, which is the second largest city in guatemala methods: between april and june 2005 we conducted a cross-sectional survey among 583 children in private and public elementary schools, in which we measured height and weight. the centers for disease control and prevention (cdc) 2000 height-for-age z-scores, weight-for-age z-scores, and body mass index-for-age centiles were used to define stunting, underweight, overweight, and obesity. results: mean height, weight, and body mass index were significantly higher in the 327 children of high ses than in the 256 children of low ses, across sexes and age groups. the prevalence of stunting was significantly higher in low-ses children than in high-ses ones (27.0% vs. 7.3%, p < 0.01) , and this was also true for underweight (14.1% versus 4.6%, p < 0.01). in contrast, the prevalence of overweight (17.7% versus 10.5%, p < 0.01) was higher in high-ses children than in low-ses ones; the same was true for obesity (14.4% versus 2.3%, p < 0.01). the prevalence of stunting among children of low ses, and the prevalence of overweight and obesity among children of high ses far exceeded the cdc 2000 reference ranges. conclusions: a high prevalence of both stunting and excess body weight was found in this urban guatemalan population, with notable contrasts between social classes. the obesity among high-income children indicates that the city is undergoing the nutrition transition, with further implications for future risks related to chronic disease. nutrition and health interventions are needed to reduce these risks.
Vacuum squeezing via polarization self-rotation and excess noise in hot Rb vapors
Eugeniy E. Mikhailov,Arturo Lezama,Thomas W. Noel,Irina Novikova
Physics , 2009, DOI: 10.1080/09500340903159503
Abstract: We present experimental and theoretical analysis of quantum fluctuation in a vacuum field in the presence of orthogonal linearly polarized pump field propagating through a Rb vapor cell. Previously reported theoretical and experimental studies provided somewhat contradictory conclusions regarding the possibility to observe the "squeezed vacuum" -- the reduction of vacuum fluctuations below standard quantum limit -- in this system. Here, using the D1 transitions of Rb in a cell without buffer as as an example, we demonstrate that vacuum squeezing is corrupted by incoherent processes (such as spontaneous emission, elastic scattering, etc.), and its observation is only possible in a specific small region of the experimental parameter space. Numerical simulations, in good agreement with the experiment, demonstrate that the two excited state hyperfine levels play a crucial role in the squeezing and excess noise production. The significant influence of far-detuned atoms on the field fluctuations at low noise frequencies imposes the explicit consideration of the full velocity distribution of the atomic vapor.
Weak regularity and finitely forcible graph limits
Jacob W. Cooper,Tomá? Kaiser,Daniel Krá?,Jonathan A. Noel
Computer Science , 2015,
Abstract: Graphons are analytic objects representing limits of convergent sequences of graphs. Lov\'asz and Szegedy conjectured that every finitely forcible graphon, i.e. any graphon determined by finitely many subgraph densities, has a simple structure. In particular, one of their conjectures would imply that every finitely forcible graphon has a weak $\varepsilon$-regular partition with the number of parts bounded by a polynomial in $\varepsilon^{-1}$. We construct a finitely forcible graphon $W$ such that the number of parts in any weak $\varepsilon$-regular partition of $W$ is at least exponential in $\varepsilon^{-2}/2^{5\log^*\varepsilon^{-2}}$. This bound almost matches the known upper bound for graphs and, in a certain sense, is the best possible for graphons.
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