437 research outputs found
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Android application collusion demystified
Application collusion is an emerging threat to Android based devices. In app collusion, two or more apps collude in some manner to perform a malicious action that they are unable to do independently. Detection of colluding apps is a challenging task. Existing commercial malware detection systems analyse each app separately, hence fail to detect any joint malicious action performed by multiple apps through collusion. In this paper, we discuss the current state of research on app collusion and open challenges to the detection of colluding apps. We compare existing approaches and present an integrated approach to effectively detect app collusion
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PIndroid: A novel Android malware detection system using ensemble learning methods
The extensive use of smartphones has been a major driving force behind a drastic increase of malware attacks. Covert techniques used by the malware make them hard to detect with signature based methods. In this paper, we present PIndroid – a novel Permissions and Intents based framework for identifying Android malware apps. To the best of our knowledge, PIndroid is the first solution that uses a combination of permissions and intents supplemented with Ensemble methods for accurate malware detection. The proposed approach, when applied to 1,745 real world applications, provides 99.8% accuracy (which is best reported to date). Empirical results suggest that the proposed framework is effective in detection of malware apps
Treatment of Drinking Water in Economical Cost Perspective
It is observed that most economical way in treating the drinking water for humans with coagulation treatment cost is Rs.1.25 per litre calculated in case of open surface water but only Rs.0.15 cost for ground and water storage tanks samples, after treatment it is sure water is safe for drinking purpose. But boiling treatment of drinking water is not economical as compare to coagulation treatment because it covers the Rs. 2.5 to Rs. 1.0 it depends on nature of water quality to treat. This cost was applicable and useful for human\u27s drinking water treatment and save the medical treatment cost from suffering the painful water borne diseases such as cholera and diarrhoea.
Aluminium sulphate is coagulated which economical but with low price available and we must use it for canal water treatment because 5 to 10 percent toxins are present. In case of ground water and storage water tanks, treatment we no need coagulant we just need boiling of drinking water then it is sure that toxins and other organic material vaporized and drinking water free of low toxicity and safe to health
Microbiological Botulinum Toxins Removing From Drinking Water Sources by Treatment of Coagulation Process
Water is a very important nutrient and responsible to maintain good health as well as proper performing the body functions, Water can remove the harmful toxins from the body. Infective disease produced by pathogenic microbes like bacteria, parasites and viruses including their metabolites as toxins are the known as most common and common health risk which connected with unsafe drinking water. It is expected; around 1.1 billion people worldwide have to drink unsafe drinking water per day. More than 95 % of these deaths are possible in low-income countries, where numerous causes like malnutrition, poor hygiene and sanitation create the immune deficiencies and specially factor such as unsafe drinking of water strongly affected on it. In the present study, C. Botulinum as bacterial specious and its related toxin botulinum toxins are detected in samples of ground water, water storage tanks and canal water but low values of toxins present in ground water sample and high values find in canal water sample.Coagulation process is used for removing the Botulinum toxins from drinking water source and giving the amazing results as show 92-97% toxins removes from drinking water samples by using the coagulant aluminium sulphate
Managing the Quality of Chromium Sulphate during the Recycling From Tanning Waste Water
Quality management is a big issue during recovery and recycling process because if desired quality is not received during chromium recovery or recycling process, we may be faced another problem of recycled materials. This also seen that most important that the production processes is useless without taking specific required quality of chromium., in real way about 60%-70% of chromium salt is used as chemical interaction with the hides but 30%-40% of chemical chromium salt is wasted as the solid and liquid form. Therefore, the quality during the recovery process of the chromium sulphate from chromium wastewater that is most important step for controlling environmental pollution with some economical benefits. Recycling of chromium sulphate is possible by using chemical precipitation method for water treatment, two precipitating agents' magnesium oxide and calcium hydroxide plus alum are used for this purpose. Final findings showed that the optimum pH for efficient recovery with required quality was 8 and the Recycling of chromium sulphate was about 99(%) at pH 8 with good sludge with high settling rate. on the Base of these findings an economical production plant can be designed which are useful for quality improvement
Operational Management of Chromium Recycling From Tannery Wastewater
Operational management is an important step in production process of a chemical reaction for getting good quality of yield with economical way as taken in recycling of chromium from tannery waste. It is most widely used the Chromium (III) salts as a chemicalin the process of tanning. Only 60%-70% of chromium salt is used to reacts with theskins and hides but 30%-40% of remaining chromium chemicals are wasted in form of the solid and liquid (as a tanning solutions). Consequently, the recoveryand recycling of the chromium metal content of existed wastewaters is essential for economic reasons and environmental protection. Recycling and recovery of chromium metal is supported by using chemical precipitation methods. For achieving this special aim, calcium hydroxide plus alum and magnesium oxide are used as two precipitating agents. This is a confirmatory Study on the effects of stirring time, pH, sludge and settling rate volume in batch experiments. These Results are showed that the optimum pH for efficient recovery was done at 8.5, good sludge with high settling rate and lower volume during recovery process was achieved. Based on these findings an economical recovery plant was designed. The recovery achieved about 99(%) at pH 8 with stirring at 90 rmp
A comparative study of positive pressure ventilation via laryngeal mask airway and endotracheal tube
Objective: To investigate the use of Laryngeal Mask Airway (LMA) and its comparison with the endotracheal tube for positive pressure ventilation.SETTING: A tertiary care teaching hospital.Methods: Fifty adult ASA I and II patients undergoing peripheral limb surgery were randomly allocated to 2 groups for LMA or endotracheal tube insertion. A standardized anaesthetic technique was used. The groups were then compared regarding haemodynamic changes on insertion as well as removal of LMA and ETT and any complications that occurred were noted.Results: The haemodynamic response to insertion was significantly attenuated (p \u3c 0.05) in LMA group as compared to ETT group. The cardiovascular response to extubation was not significantly different between the groups. A higher incidence of coughing and mild hypoxaemia at extubation was noted in ETT group as compared to LMA group (p \u3c 0.05) and blood was detected in 4 cases after LMA removal.CONCLUSION: It is concluded that the use of LMA during positive pressure ventilation is safe in selected cases. There is an attenuated haemodynamic response to insertion of LMA as compared to endotracheal tube which will be beneficial in certain patients e.g., those with ischaemic heart disease, vascular disease and hypertensives
Genetic regulation of pituitary gland development in human and mouse
Normal hypothalamopituitary development is closely related to that of the forebrain and is dependent upon a complex genetic cascade of transcription factors and signaling molecules that may be either intrinsic or extrinsic to the developing Rathke’s pouch. These factors dictate organ commitment, cell differentiation, and cell proliferation within the anterior pituitary. Abnormalities in these processes are associated with congenital hypopituitarism, a spectrum of disorders that includes syndromic disorders such as septo-optic dysplasia, combined pituitary hormone deficiencies, and isolated hormone deficiencies, of which the commonest is GH deficiency. The highly variable clinical phenotypes can now in part be explained due to research performed over the last 20 yr, based mainly on naturally occurring and transgenic animal models. Mutations in genes encoding both signaling molecules and transcription factors have been implicated in the etiology of hypopituitarism, with or without other syndromic features, in mice and humans. To date, mutations in known genes account for a small proportion of cases of hypopituitarism in humans. However, these mutations have led to a greater understanding of the genetic interactions that lead to normal pituitary development. This review attempts to describe the complexity of pituitary development in the rodent, with particular emphasis on those factors that, when mutated, are associated with hypopituitarism in humans
A Framework for Realistic Simulation of Daily Human Activity
For social robots like Astro which interact with and adapt to the daily
movements of users within the home, realistic simulation of human activity is
needed for feature development and testing. This paper presents a framework for
simulating daily human activity patterns in home environments at scale,
supporting manual configurability of different personas or activity patterns,
variation of activity timings, and testing on multiple home layouts. We
introduce a method for specifying day-to-day variation in schedules and present
a bidirectional constraint propagation algorithm for generating schedules from
templates. We validate the expressive power of our framework through a use case
scenario analysis and demonstrate that our method can be used to generate data
closely resembling human behavior from three public datasets and a
self-collected dataset. Our contribution supports systematic testing of social
robot behaviors at scale, enables procedural generation of synthetic datasets
of human movement in different households, and can help minimize bias in
training data, leading to more robust and effective robots for home
environments.Comment: Accepted and Presented at IEEE International Conference on Robot and
Human Communication (ROMAN) 202
Offshore Wind Turbines for the Norwegian Shelf
Skriftserien ved HVL, rapportThe report discusses the appropriate design of wind turbines for placement in the North Sea on the Norwegian Continental Shelf.
For wind turbines in the southern part of the Norwegian Sector, at water depths in the range of 50 m, jacket foundations supporting the wind turbines will be necessary as the technology for use of “monotower” foundations limits these to shallower depths. The development of new foundation solutions, as for example concrete mono-towers, could, however, not be disregarded. Fabrication and installation are within state of art, although equipment handling the work will be heavier than in shallow water due to heavier foundation platforms and deeper waters excluding small jackups. Personnel transfer technology using walk-to-work technology is established for the area, however, care must always be taken to ensure the safety of all personnel involved.
For floating wind turbines in deeper waters, say 150m, the technology state of art is represented by Spar type wind turbines, for example the Hywind design, and of semisubmersible wind turbine support structures of the “Wind Float” design. The physical conditions of the North Sea must be considered, and the Norwegian Coastal Current could represent large forces on the anchor and cable systems. For safe design, a safety evaluation will be necessary with respect to the redundancy of the anchor system. Fabrication of the Spar type units are possible in dry docks with transfer to deeper fjords for the finalization of the construction prior to tow to the offshore site. The semisubmersible units can be fabricated in dry docks and towed fully ready for operation to the offshore site. Stability calculations must be done to ensure intact stability during the tow across most of the shallow parts of the tow-out route. The floating wind turbines will be challenging to access by walk-to-work technology and waiting for acceptable weather will limit the weather windows for safe transfer of personnel
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