The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Emissions of the greenhouse gases N2O, CO2, and CH4 have increased in the past years. CH4 has a distinct contribution to global warming and climate change. Rice production plays an important role in CH4 emission. Thus, the rice fields in China should be considered in assessing CH4 emission. This study simulated CH4 emission in rice fields in China during the past 40 years (1971 to 2010) using the...
Although mining is a path toward regional development and poverty reduction, mining area facing growing land use conflicts among mining, agricultural and conservation uses. Taking Shahejie town, a mining town in Jiangxi Province, China, as a case study, this paper tries to find out the defining element of the preferences and values that the public holds for cultivated land in mining area. This paper...
The present work describes the analysis and optimisation of the PELAGOS025 configuration based on the coupling of the NEMO physic component of the ocean dynamics and the BFM (Biogeochemical Flux Model), a sophisticated biogeochemical model that can simulate both pelagic and benthic processes. The methodology here followed is characterised by the performance analysis of the original parallel code,...
State-of-the-art methods for airport detection in panchromatic remote sensing images utilize very limit geometrical features of airport line segments. This paper proposes a novel method based on both bottom-up and top-down saliency. Noticed that airport runways have features of vicinity and parallelity, and their lengths are among certain range, the concept of near parallelity is introduced after...
Parameterized probabilistic complex computational (P2C2) models are being increasingly used in computational systems biology for analyzing biological systems. A key challenge is to build mechanistic P2C2 models by combining prior knowledge and empirical data, given that certain system properties are unknown. These unknown components are incorporated into a model as parameters and determining their...
In this paper a type of proportional integral fuzzy observers (PI-Fuzzy Observer) based on Takagi-Sugeno Fuzzy (TS-Fuzzy) Descriptor models is proposed with application in a real system. The state and unknown input estimation problems for a diesel engine air-path system is solved by using a PI-Fuzzy Observer. The proposed approach offers all the degrees of observer design and also, sufficient stability...
Wide-spread use of the model-based design process in automotive powertrain system development is increasing the need for accurate dynamic models. Model-based design inherently requires these models to be rapidly producible and easily verifiable. The High Level Modeling (HLM) approach and corresponding High Level Modeling Tool (HLMT) have been developed in response to these necessities. In this work,...
The Gaussian plume model is the core of most regulatory atmospheric dispersion models. The parameters of the model include the source characteristics (e.g. location, strength, size) and environmental parameters (wind speed, direction, atmospheric stability conditions). A sensor network is at disposal to measure the concentration of biological pathogen or chemical substance within the plume. This paper...
GPR models are instrumental in improving procedures of signal processing and developing indicators for GPR data interpretation. The paper presents GPR models of basic types of geostructural discontinuities in alluvial placers of Yakutia. Frozen rock massif of placer deposits is characterized by layered structure and includes discontinuities related to disturbance of rock, relict streams, and boulder...
Spectral variability is a phenomenon due, to a grand extend, to variations in the illumination and atmospheric conditions within a hyperspectral image, causing the spectral signature of a material to vary within a image. Data spectral fluctuation due to spectral variability compromises the linear mixing model (LMM) sum-to-one constraint, and is an important source of error in hyperspectral image analysis...
Kelp forests, which are dense stands of brown seaweeds of the taxonomic order Laminariales, often are used as indicator species for assessing the environmental state of coastal waters. To this end, large scale monitoring approaches are required apart from traditional labor-intensive point sampling techniques. Bio-optical modelling with hyperspectral remote sensing data provides the possibility to...
Diffuse reflectance spectroscopy is a powerful technique to predict soil properties. It can be used in situ to provide data inexpensively and rapidly compared to the standard laboratory measurements. Because most spectral data bases contain air-dried samples scanned in the laboratory, field spectra acquired in situ are either absent or rare in calibration data sets. However, when models are calibrated...
Emissions from represent a major component of airborne pollution. Transportation emission models are part of the modeling process of transportation planning. It introduces an important tool for the environmental evaluation of different transportation scenarios. Worldwide, there are several emission models. These models are categories to static and dynamic models. It depends on the amount of available...
The probability of extreme sea surface temperature (SST) occurring seems more apparent for future in the Baltic Sea therefore its prediction and inferences are essential. This study analyzed the mean change of the SST in the Baltic Sea and calculated return periods using extreme value distributions of the 21st century. To illustrate the application of extreme value theory, annual SST maxima from the...
Inspired the principle of the neuroendocrine-immune system (NEIS) defense and the theory and method of the multi-agent system (MAS), this paper analyzed the comparability on the defense mechanism and adaptability and self-organization between the cooperative air-defense system of systems for surface warship formation (CASoSSWF) and the NEIS, mapped the CASoSSWF to the NEIS, moreover designed the new...
Rising fuel and operating expenses for commercial airline operators coupled with a predicted pilot labor shortage drives the need for a reduction in costs while continuing to service passengers. One possible solution to reduce recurring costs and mitigate the effects of a pilot shortage is the transition to a single pilot cockpit. Three different design alternatives for implementing a single pilot...
We can increase our diagnostic ability for obstructed sleep apnea by creating an artificial airway model then measure its frequency responses. This research involved the creation of a silicone head model with anatomically correct nasopharynx, oropharynx, and trachea. Measurements were taken without any obstruction and that served as the baseline in our testing. We also modeled an obstructed airway...
The safety of passengers is a major concern to airports. In the event of crises, having an effective and efficient evacuation process in place can significantly aid in enhancing passenger safety. Hence, it is necessary for airport operators to have an in-depth understanding of the evacuation process of their airport terminal. Although evacuation models have been used in studying pedestrian behavior...
Autonomous health monitoring is a key enabling technology for future space missions. One approach to developing this capability is through model-based fault management. This method seeks to leverage system models in order to enable rapid algorithm development, reduce the burden of verification and validation, and ensure that a large set of possible faults can be detected and identified. Here, a high...
A critical resource for meeting the challenges of human exploration beyond near Earth orbit is greater reliance on spacecraft automation. If human-automation integration is not appropriately designed, however, increased automation may contribute to rather than alleviate these challenges. TRACLabs and San Jose State University are investigating the hypothesis that selecting units of work for automation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.