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Search Results: 1 - 10 of 84514 matches for " Soe W. Myint "
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Comparison of Remote Sensing Image Processing Techniques to Identify Tornado Damage Areas from Landsat TM Data
Soe W. Myint,May Yuan,Randall S. Cerveny,Chandra P. Giri
Sensors , 2008, DOI: 10.3390/s8021128
Abstract: Remote sensing techniques have been shown effective for large-scale damagesurveys after a hazardous event in both near real-time or post-event analyses. The paperaims to compare accuracy of common imaging processing techniques to detect tornadodamage tracks from Landsat TM data. We employed the direct change detection approachusing two sets of images acquired before and after the tornado event to produce a principalcomponent composite images and a set of image difference bands. Techniques in thecomparison include supervised classification, unsupervised classification, and object-oriented classification approach with a nearest neighbor classifier. Accuracy assessment isbased on Kappa coefficient calculated from error matrices which cross tabulate correctlyidentified cells on the TM image and commission and omission errors in the result. Overall,the Object-oriented Approach exhibits the highest degree of accuracy in tornado damagedetection. PCA and Image Differencing methods show comparable outcomes. Whileselected PCs can improve detection accuracy 5 to 10%, the Object-oriented Approachperforms significantly better with 15-20% higher accuracy than the other two techniques.
Comparison of Remote Sensing Image Processing Techniques to Identify Tornado Damage Areas from Landsat TM Data
Soe W. Myint,May Yuan,Randall S. Cerveny,Chandra P. Giri
Sensors , 2008,
Abstract: Remote sensing techniques have been shown effective for large-scale damagesurveys after a hazardous event in both near real-time or post-event analyses. The paperaims to compare accuracy of common imaging processing techniques to detect tornadodamage tracks from Landsat TM data. We employed the direct change detection approachusing two sets of images acquired before and after the tornado event to produce a principalcomponent composite images and a set of image difference bands. Techniques in thecomparison include supervised classification, unsupervised classification, and object-oriented classification approach with a nearest neighbor classifier. Accuracy assessment isbased on Kappa coefficient calculated from error matrices which cross tabulate correctlyidentified cells on the TM image and commission and omission errors in the result. Overall,the Object-oriented Approach exhibits the highest degree of accuracy in tornado damagedetection. PCA and Image Differencing methods show comparable outcomes. Whileselected PCs can improve detection accuracy 5 to 10%, the Object-oriented Approachperforms significantly better with 15-20% higher accuracy than the other two techniques.
Oral Janus Kinase Inhibitor for the Treatment of Rheumatoid Arthritis: Tofacitinib
Han Ni,Soe Moe,Kay Thi Myint,Aung Htet
ISRN Rheumatology , 2013, DOI: 10.1155/2013/357904
Abstract: Since the introduction of immune modulators in the treatment of rheumatoid arthritis (RA), there has been hope that orally effective biologic agents would be developed. Tofacitinib, a Janus kinase inhibitor, has become the first oral biologic to receive approval for use in active RA patients. This paper reviews the efficacy and safety profile of Tofacitinib at dosages of 5?mg and 10?mg twice daily. Remarkable improvement in terms of ACR 20 response and HAQ-DI score was noted at month 3 and month 6. DAS 28-4 ESR < 2.6 achievement was noticeably obvious at month 6 for both dosages. No significant serious adverse events, serious infections, neutropenia, or anaemia were observed compared to placebo. In fact, Tofacitinib 5?mg was even found to have significant protective effect of anaemia in the meta-analysis ( ). Tofacitinib has a noticeable efficacy in controlling disease activity in RA with a manageable safety profile. However, longer studies are needed for its long-term safety profile. 1. Introduction Rheumatoid arthritis (RA) is a common immune-mediated systemic disorder, characterized by inflammatory polyarthritis affecting synovium of joints, tendons, and extra-articular sites. It is progressive and leads to joint erosions and deformities, causing premature mortality, functional impairment, and reduced quality of life [1]. The prevalence of RA remains constant at 0.5–1.0% among various population group [2, 3]. The prevalence is generally lower in developing countries [4]. In 2005, 1.5 million adults of more than 18 years (0.6%) in the United States were estimated to have RA [5]. HLA DRB1 allele is the major genetic risk factor of RA around the world [2]. Conventionally, RA was treated with “Pyramid” approach, where disease modifying antirheumatic drug (DMARD) was deferred until advanced stage. In 1960s and 1970s, gold and penicillamine were the only DMARDs used for RA [6]. However, in 1980s, methotrexate was found to retard or even prevent bone erosions [7]. This has led to dramatic changes in the treatment of RA, with early aggressive use of DMARDs within the first few months of diagnosis, and methotrexate becomes the first line DMARD in RA [6]. In the pathogenesis of rheumatoid arthritis, various inflammatory mediators are found to be involved, among which tumour necrosis factor (TNF) α is the main agent. New drugs targeting these inflammatory mediators have changed the prognosis and outcome of this chronic debilitating disease. Early initiation of DMARDs, either nonbiologic or biologic, has decreased the morbidity of this condition [8, 9]. Thus,
Performance Analysis and Design Consideration of Cassegrain for Satellite Communication
Myint Myint Soe,Zaw Min Aung,Zaw Min Naing,Khaing Theingi Oo
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
Are there any changes in burden and management of communicable diseases in areas affected by Cyclone Nargis?
Nyan Myint, Jaranit Kaewkungwal, Pratap Singhasivanon, Kamron Chaisiri, Pornpet Panjapiyakul, Pichit Siriwan, Arun K Mallik, Soe Nyein, Thet Mu
Conflict and Health , 2011, DOI: 10.1186/1752-1505-5-9
Abstract: Monthly data during 2007, 2008 and 2009 from the routine reporting system for disease surveillance of the Myanmar Ministry of Health (MMOH) were reviewed and compared with weekly reporting from the Early Warning and Rapid Response (EWAR) system. Data from some UN agencies, NGOs and Tri-Partite Core Group (TCG) periodic reviews were also extracted for comparisons with indicators from Sphere and the Inter-Agency Standing Committee.Compared to 2007 and 2009, large and atypical increases in diarrheal disease and especially dysentery cases occurred in 2008 following Cyclone Nargis. A seasonal increase in ARI reached levels higher than usual in the months of 2008 post-Nargis. The number of malaria cases post-Nargis also increased, but it was less clear if this reflected normal seasonal patterns or was specifically associated with the disaster event. There was no significant change in the occurrence of other communicable diseases in Nargis-affected areas. Except for a small decrease in mortality for diarrheal diseases and ARI in 2008 in Nargis-affected areas, population-based mortality rates for all other communicable diseases showed no significant change in 2008 in these areas, compared to 2007 and 2009. Tuberculosis control programs reached their targets of 70% case detection and 85% treatment success rates in 2007 and 2008. Vaccination coverage rates for DPT 3rd dose and measles remained at high though measles coverage still did not reach the Sphere target of 95% even by 2009. Sanitary latrine coverage in the Nargis-affected area dropped sharply to 50% in the months of 2008 following the incident but then rose to 72% in 2009.While the incidence of diarrhea, dysentery and ARI increased post-Nargis in areas affected by the incident, the incidence rate for other diseases and mortality rates did not increase, and normal disease patterns resumed by 2009. This suggests that health services as well as prevention and control measures provided to the Nargis-affected population m
A Conserved Multi-Gene Family Induces Cross-Reactive Antibodies Effective in Defense against Plasmodium falciparum
Subhash Singh, Soe Soe, Simon Weisman, John W. Barnwell, Jean Louis Pérignon, Pierre Druilhe
PLOS ONE , 2009, DOI: 10.1371/journal.pone.0005410
Abstract: Background Two related merozoite surface proteins, MSP3 and MSP6, have previously been identified as targets of antibody-dependent cellular inhibition (ADCI), a protective mechanism against Plasmodium falciparum malaria. Both MSP3 and MSP6 share a common characteristic small N-terminal signature amino-acid stretch (NLRNA/G), a feature similar to MSP3-like orthologs identified in other human and primate malaria parasites. Methods/Results This signature amino-acid sequence led to the identification of eight ORFs contiguously located on P. falciparum chromosome 10. Our subsequent investigations on their expression, localization, sequence conservation, epitope sharing, immunogenicity and the functional role of antibodies in defense are reported here. Six members of P. falciparum MSP3-multigene family share similar sequence organization within their C-terminal regions, are simultaneously expressed as merozoite surface proteins and are highly conserved among parasite isolates. Each of these proteins is a target of naturally occurring antibodies effective at parasite killing in ADCI assays. Moreover, both naturally occurring antibodies and those generated by immunization display cross-reactivity with other members of the family and exhibit varied binding avidities. Conclusions/Significance The unusual characteristics of the MSP3 multi-gene family lead us to hypothesize that the simultaneous expression of targets eliciting cross-reactive antibody responses capable of controlling parasite densities could represent an immune process selected through evolution to maintain homeostasis between P. falciparum and human hosts; a process that allows the continuous transmission of the parasite without killing the host. Our observations also have practical consequences for vaccine development by suggesting MSP3 vaccine efficacy might be improved when combined with the various C-terminus regions of the MSP3 family members to generate a wider range of antibodies acting and to increase vaccine immunogenicity in varied human genetic backgrounds.
Categorizing natural disaster damage assessment using satellite-based geospatial techniques
S. W. Myint, M. Yuan, R. S. Cerveny,C. Giri
Natural Hazards and Earth System Sciences (NHESS) & Discussions (NHESSD) , 2008,
Abstract: Remote sensing of a natural disaster's damage offers an exciting backup and/or alternative to traditional means of on-site damage assessment. Although necessary for complete assessment of damage areas, ground-based damage surveys conducted in the aftermath of natural hazard passage can sometimes be potentially complicated due to on-site difficulties (e.g., interaction with various authorities and emergency services) and hazards (e.g., downed power lines, gas lines, etc.), the need for rapid mobilization (particularly for remote locations), and the increasing cost of rapid physical transportation of manpower and equipment. Satellite image analysis, because of its global ubiquity, its ability for repeated independent analysis, and, as we demonstrate here, its ability to verify on-site damage assessment provides an interesting new perspective and investigative aide to researchers. Using one of the strongest tornado events in US history, the 3 May 1999 Oklahoma City Tornado, as a case example, we digitized the tornado damage path and co-registered the damage path using pre- and post-Landsat Thematic Mapper image data to perform a damage assessment. We employed several geospatial approaches, specifically the Getis index, Geary's C, and two lacunarity approaches to categorize damage characteristics according to the original Fujita tornado damage scale (F-scale). Our results indicate strong relationships between spatial indices computed within a local window and tornado F-scale damage categories identified through the ground survey. Consequently, linear regression models, even incorporating just a single band, appear effective in identifying F-scale damage categories using satellite imagery. This study demonstrates that satellite-based geospatial techniques can effectively add spatial perspectives to natural disaster damages, and in particular for this case study, tornado damages.
Does Σ-Σ-αForm a Quasi-Bound State?
H. Htun Oo,K. S. Myint,H. Kamada,W. Gloeckle
Physics , 2004, DOI: 10.1143/PTP.113.809
Abstract: We have investigated the possible existence of a quasi-bound state for the \Sigma -\Sigma -\alpha system in the framework of Faddeev calculations. We are particularly interested in the state of total iso-spin T=2, since for an inert \alpha particle there is no strong conversion to \Xi -N-\alpha or \Lambda -\Lambda -\alpha possible. A \Sigma -\alpha optical potential based on Nijmegen model D and original \Sigma -\Sigma interactions of the series of Nijmegen potentials NSC97 as well a simulated Gaussian type versions thereof are used. Our investigation of the \Sigma -\Sigma -\alpha system leads to a quasi bound state where, depending on the potential parameters, the energy ranges between -1.4 and -2.4 MeV and the level width is about 0.2MeV.
Low-Density Co-Inoculation of Myanmar Bradyrhizobium yuanmingense MAS34 and Streptomyces griseoflavus P4 to Enhance Symbiosis and Seed Yield in Soybean Varieties  [PDF]
Khin Myat Soe, Takeo Yamakawa
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.49231
Abstract:

This study examined whether low-density co-inoculation of Myanmar Bradyrhizobium yuanmingense strain MAS34 and Streptomyces griseoflavus P4 would enhance nodulation, N2 fixation, and seed yield in two soybean varieties. A field experiment was conducted during the July to November 2012 growing season at Kyushu University Farm, Japan, using a split-plot design with three replications and the following four treatments: T1, an uninoculated treatment with peat moss (uninoculated); T2, a single inoculation with S. griseoflavus P4 (P4); T3, a single inoculation of B. yuanmingense MAS34 (MAS34); and T4, a dual inoculation of P4 with MAS34 (P4 + MAS34). Two varieties of soybean, Yezin-3 (Rj4) and Yezin-6 (non-Rj), were used. The N2 fixation activity of soybean was evaluated by the relative ureide method using xylem solute from root bled sap at the early pod-fill stage (R3.5). Dry matter production, N2 fixation, and seed yield were significantly (P < 0.01) different between the inoculated treatments. The effect of variety was also sig

Active surveillance for congenital rubella syndrome in Yangon, Myanmar
Thant,Kyaw-Zin; Oo,Win-Mar; Myint,Thein-Thein; Shwe,Than-Nu; Han,Aye-Maung; Aye,Khin-Mar; Aye,Kay-Thi; Moe,Kyaw; Thein,Soe; Robertson,Susan E;
Bulletin of the World Health Organization , 2006, DOI: 10.1590/S0042-96862006000100009
Abstract: objective: rubella vaccine is not included in the immunization schedule in myanmar. although surveillance for outbreaks of measles and rubella is conducted nationwide, there is no routine surveillance for congenital rubella syndrome (crs). therefore, we organized a study to assess the burden of crs. methods: from 1 december 2000 to 31 december 2002 active surveillance for crs was conducted among children aged 0-17 months at 13 hospitals and 2 private clinics in yangon, the capital city. children with suspected crs had a standard examination and a blood sample was obtained. all serum samples were tested for rubella-specific igm; selected samples were tested for rubella-specific igg and for rubella rna by reverse transcriptase-polymerase chain reaction (rt-pcr). findings: a total of 81 children aged 0-17 months were suspected of having crs. of these, 18 children had laboratory-confirmed crs (7 were igm positive; 7 were rt-pcr positive; and 10 were igg positive at > 6 months of age). one additional child who tested positive by rt-pcr and whose mother had had rubella during pregnancy but who had a normal clinical examination was classified as having congenital rubella infection. during 2001-02 no rubella outbreaks were detected in yangon division. in the 31 urban townships of yangon division, the annual incidence was 0.1 laboratory-confirmed cases of crs per 1000 live births. conclusion: this is the first population-based study of crs incidence from a developing country during a rubella-endemic period; the incidence of crs is similar to endemic rates found in industrialized countries during the pre-vaccine era. rubella-specific igg tests proved practical for diagnosing crs in children aged > 6 months. this is one of the first studies to report on the use of rubella-specific rt-pcr directly on serum samples; further studies are warranted to confirm the utility of this method as an additional means of diagnosing crs.
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