29 research outputs found
Nematopsis sp. (Apicomplexa: Porosporidae) infection in Crassostrea madrasensis and its associated histopathology
The present study forms the first report of Nematopsis sp. infection in the
edible oyster, Crassostrea madrasensis from India. The study was carried
out as part of a detailed pathological investigation of C. madrasensis
along the southwest coast of India. Sporozoites of Nematopsis sp. were
found in samples collected from two locations. Light microscopic
observation revealed ellipsoidal oocysts measuring 16.63±2.40 μm in
length and 11.11± 2.49 μm in width (n=30) in the connective tissues
of gills, mantle, visceral mass and gonads. Prevalence of infection
ranged from 11 to 27%. Apparent pathological changes included
compression of adjacent digestive diverticulae in visceral connective
tissue infections and presence of phagocytosed oocysts in water
channels in the case of gill infections. With relevance to the expanding
culture of C. madrasensis, monitoring potential pathogens of this species
in its natural habitat is important for developing suitable health
management packages
Designing Interactive Secure Systems: CHI 2013 Special Interest Group
Despite a growing interest in the design and engineering
of interactive secure systems, there is also a noticeable amount of fragmentation. This has led to a lack of awareness about what research is currently being carried out, and misunderstandings about how different fields can contribute to the design of usable and secure systems. By drawing interested members of the CHI community from design, user experience, engineering, and HCI Security,
this SIG will take the first steps towards creating a
research agenda for interactive secure system design. In the SIG, we will summarise recent initiatives to develop a research programme in interactive secure system design, network members of the CHI community with an interest in this research area, and initiate a roadmap towards addressing identified research challenges and building an interactive secure system design community
On Some Circular Distributions Induced by Inverse Stereographic Projection
In earlier studies of circular data, the corresponding probability distributions considered were mostly assumed to be symmetric. However, the assumption of symmetry may not be meaningful for some data. Thus there has been increased interest, more recently, in developing skewed circular distributions. In this article we introduce three skewed circular models based on inverse stereographic projection, originally introduced by Minh and Farnum (2003), by considering three different versions of skewed-t considered in the literature, namely skewed-t by Azzalini (1985), two-piece skewed-t (Fern´andez and Steel, 1998) and skewedt by Jones and Faddy (2003). Shape properties of the resulting circular distributions along with estimation of parameters using maximum likelihood are also discussed in this article. Further, real data sets are used to illustrate the application of the new models. It is found that Azzalini and Jones-Faddy skewed-t versions are good competitors, however, the Jones-Faddy version is computationally more tractable
Design and implementation of Cell Tracking system and Sync with cloud
In today?s world more than eighty percent people uses the smart phones. As the need increases the misuse of the cell phone also increases. Anyone can distrust or cheat other or suspicious of others activities. There may be loss of an important data in the big organizations due to the employees. Many criminal activities have increased in organization and teenagers are misusing the smart phones. So for the security purpose in the large organizations and to control the activities of the employees and the teenagers, software can be used which keeps the log files in a single mobile with its date and synchronize daily with restricted area in corporate with cloud
Two instances of gonadal abnormalities in Indian mackerel
The Indian mackerel Rastrelliger kanagurta is
known to be dioecious with male and female gonads
in separate individuals. However, gonadal
abnormalities such as hermaphroditism and other
aberrations have been observed in a few instances.
Gonadal abnormalities in mackerel observed during
regular biological sampling from fish samples
collected from the landing centre is reported here.
For the histological analysis, the gonads were fixed
in 10% neutral buffered formalin, dehydrated in
ethanol series and the cleared samples were
embedded in paraffin wax and made into blocks
Finding and Resolving Security Misusability with Misusability Cases
Although widely used for both security and usability concerns, scenarios used in security design may not necessarily inform the design of usability, and vice- versa. One way of using scenarios to bridge security and usability involves explicitly describing how design deci- sions can lead to users inadvertently exploiting vulnera- bilities to carry out their production tasks. This paper describes how misusability cases, scenarios that describe how design decisions may lead to usability problems sub- sequently leading to system misuse, address this problem. We describe the related work upon which misusability cases are based before presenting the approach, and illus- trating its application using a case study example. Finally, we describe some findings from this approach that further inform the design of usable and secure systems
POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations
Most massive stars are members of a binary or a higher-order stellar systems,
where the presence of a binary companion can decisively alter their evolution
via binary interactions. Interacting binaries are also important astrophysical
laboratories for the study of compact objects. Binary population synthesis
studies have been used extensively over the last two decades to interpret
observations of compact-object binaries and to decipher the physical processes
that lead to their formation. Here, we present POSYDON, a novel, binary
population synthesis code that incorporates full stellar-structure and
binary-evolution modeling, using the MESA code, throughout the whole evolution
of the binaries. The use of POSYDON enables the self-consistent treatment of
physical processes in stellar and binary evolution, including: realistic
mass-transfer calculations and assessment of stability, internal
angular-momentum transport and tides, stellar core sizes, mass-transfer rates
and orbital periods. This paper describes the detailed methodology and
implementation of POSYDON, including the assumed physics of stellar- and
binary-evolution, the extensive grids of detailed single- and binary-star
models, the post-processing, classification and interpolation methods we
developed for use with the grids, and the treatment of evolutionary phases that
are not based on pre-calculated grids. The first version of POSYDON targets
binaries with massive primary stars (potential progenitors of neutron stars or
black holes) at solar metallicity.Comment: 60 pages, 33 figures, 8 tables, referee's comments addressed. The
code and the accompanying documentations and data products are available at
https:\\posydon.or
Mixed methods study protocol for combining stakeholder-led rapid evaluation with near real-time continuous registry data to facilitate evaluations of quality of care in intensive care units [version 1; peer review: awaiting peer review]
BACKGROUND: Improved access to healthcare in low- and middle-income countries (LMICs) has not equated to improved health outcomes. Absence or unsustained quality of care is partly to blame. Improving outcomes in intensive care units (ICUs) requires delivery of complex interventions by multiple specialties working in concert, and the simultaneous prevention of avoidable harms associated with the illness and the treatment interventions. Therefore, successful design and implementation of improvement interventions requires understanding of the behavioural, organisational, and external factors that determine care delivery and the likelihood of achieving sustained improvement. We aim to identify care processes that contribute to suboptimal clinical outcomes in ICUs located in LMICs and to establish barriers and enablers for improving the care processes. METHODS: Using rapid evaluation methods, we will use four data collection methods: 1) registry embedded indicators to assess quality of care processes and their associated outcomes; 2) process mapping to provide a preliminary framework to understand gaps between current and desired care practices; 3) structured observations of processes of interest identified from the process mapping and; 4) focus group discussions with stakeholders to identify barriers and enablers influencing the gap between current and desired care practices. We will also collect self-assessments of readiness for quality improvement. Data collection and analysis will be performed in parallel and through an iterative process across eight countries: Kenya, India, Malaysia, Nepal, Pakistan, South Africa, Uganda and Vietnam. CONCLUSIONS: The results of our study will provide essential information on where and how care processes can be improved to facilitate better quality of care to critically ill patients in LMICs; thus, reduce preventable mortality and morbidity in ICUs. Furthermore, understanding the rapid evaluation methods that will be used for this study will allow other researchers and healthcare professionals to carry out similar research in ICUs and other health services
Molecular and morphological descriptions of Ceratomyxa collarae n. sp. and Ceratomyxa leucosternoni n. sp. from marine ornamental fishes of Indian waters
Two novel species of Ceratomyxa infecting marine
ornamental fishes from Indian waters are described. Marine
ornamentals, Chaetodon collare and Chaetodon decussatus,
collected from Vizhinjam, along the southwest coast of India
and Acanthurus leucosternon collected from Lakshadweep
islands ofArabian Sea revealed Ceratomyxa infections in their
gall bladders. Mature spores of Ceratomyxa from Chaetodon
collare and Chaetodon decussatus were elongate and slightly
crescentic, with rounded ends, and measured 5.20± 0.32 μm
in length and 16.32 ± 1.29 μm in thickness. Polar capsules
spherical, equal in size and measured 2.23 ± 0.16 μm long
and 2.24± 0.20 μm wide. Posterior angle measured 157.75
± 8.650. Principle Component Analysis and molecular analysis
using partial SSUrDNA sequences showed the isolates
from these two hosts to be identical. Morphological, morphometric
and molecular analysis using partial SSUrDNA sequences
revealed the taxonomic novelty of isolates and are
hence treated as Ceratomyxa collarae n. sp. Mature spores
of Ceratomyxa from Acanthurus leucosternon were elongate,
slightly tapering with rounded ends, and measured 7.34
±0.92 μm in length and 24.37 ± 2.34 μm in thickness. Shell
valves were equal, joined by a narrow suture line. Polar capsules
spherical in shape, equal in size, 2.59±0.32 μm long and
2.46 ± 0.32 μm wide, and polar filament measured 18.68
±2.54 μm. Based on morphological, morphometric and molecular
analyses, the present species of Ceratomyxa is distinct, considered
as a new species and named Ceratomyxa leucosternoni
n. sp. The paper also discusses the prevalence of the recovered
parasites and host specificity of Ceratomyxa collarae n. sp
Not Available
Not AvailableTwo novel species of Ceratomyxa infecting marine
ornamental fishes from Indian waters are described. Marine
ornamentals, Chaetodon collare and Chaetodon decussatus,
collected from Vizhinjam, along the southwest coast of India
and Acanthurus leucosternon collected from Lakshadweep
islands ofArabian Sea revealed Ceratomyxa infections in their
gall bladders. Mature spores of Ceratomyxa from Chaetodon
collare and Chaetodon decussatus were elongate and slightly
crescentic, with rounded ends, and measured 5.20± 0.32 μm
in length and 16.32 ± 1.29 μm in thickness. Polar capsules
spherical, equal in size and measured 2.23 ± 0.16 μm long
and 2.24± 0.20 μm wide. Posterior angle measured 157.75
± 8.650. Principle Component Analysis and molecular analysis
using partial SSUrDNA sequences showed the isolates
from these two hosts to be identical. Morphological, morphometric
and molecular analysis using partial SSUrDNA sequences
revealed the taxonomic novelty of isolates and are
hence treated as Ceratomyxa collarae n. sp. Mature spores
of Ceratomyxa from Acanthurus leucosternon were elongate,
slightly tapering with rounded ends, and measured 7.34
±0.92 μm in length and 24.37 ± 2.34 μm in thickness. Shell
valves were equal, joined by a narrow suture line. Polar capsules
spherical in shape, equal in size, 2.59±0.32 μm long and
2.46 ± 0.32 μm wide, and polar filament measured 18.68
±2.54 μm. Based on morphological, morphometric and molecular
analyses, the present species of Ceratomyxa is distinct, considered
as a new species and named Ceratomyxa leucosternoni
n. sp. The paper also discusses the prevalence of the recovered
parasites and host specificity of Ceratomyxa collarae n. sp.Not Availabl