12 research outputs found
Ocena możliwości zastosowania wybranych funkcji pedotransfer do wyznaczania retencji gleb leśnych w Polsce
Assessment of the possibility of applying
selected pedotransfer functions
for indicating the retention of forest soils
in Poland. Landscape retention influences
the water balance of a catchment and the
course of flooding events. The degree of retention
capabilities of forest soils are much
less known than the retention of land used
for agriculture. Soil retention capacity influences
the formation of a given forest habitat
type, floristic species composition, as well
as the type and quality of the stand of trees.
The analysis was carried out for a regression
model dedicated to selected forest soils
within the area of Poland, as well as van Genuchten’s
and Wösten’s, and Varallyay’s and
Mironienko’s models. In order to assess the
fit of the models, an independent series of
forest soils were used. The models prepared
for soils used for agricultural purposes do not
result in statistically acceptable fit when it
comes to the analyzed forest soils. The analysis
of measured and calculated values of
total available water indicate good fit of the
regression model developed for the analyzed
group of podzolic and brown forest soils.Ocena możliwości zastosowania wybranych
funkcji pedotransfer do wyznaczania
retencji gleb leśnych w Polsce.
Retencja gleb leśnych w znacznym stopniu
decyduje o bilansie wodnym zlewni i przebiegu
zjawisk hydrologicznych, wpływa na
kształtowanie się określonego typu siedliska
lasu, skład florystyczny i jakość drzewostanu.
Zdolności retencyjne gleb leśnych są
znacznie mniej rozpoznane niż retencja gleb
użytkowanych rolniczo. Retencja może być
wyznaczona zarówno metodą bezpośrednią,
jak i pośrednio za pomocą tzw. funkcji pedotransfer
opisującej jej związek z określonymi
właściwościami fizycznymi gleby. Analizę
prowadzono dla modelu regresyjnego
opracowanego dla wybranych gleb leśnych
z obszaru Polski oraz dla modeli van Genuchtena
i Wöstena oraz Varallyaya i Mironienki.
Do oceny dopasowania modeli
zastosowano niezależną serię gleb leśnych.
Analiza pomierzonych i obliczonych wartości
potencjalnej retencji użytecznej wskazuje
na dobre dopasowanie modelu regresyjnego
opracowanego dla badanej grupy gleb
leśnych bielicowych i brunatnych. Modele
opracowane dla gleb użytkowanych rolniczo
nie dają akceptowalnego statystycznie dopasowania
dla analizowanych gleb leśnych.
Przeprowadzone badania potwierdzają lokalny
charakter funkcji pedotransfer
iRebot: An Interactive Rehabilitation Robot with Gesture Control
Physical therapy efficacy relies on patient compliance and motivation. However, the monotony, intensity, and expense of most therapy routines do not promote engagement. Technology-based rehabilitation has the potential to provide engaging and cost-effective treatment, leading to better compliance and mobility outcomes. We present an interactive rehabilitation robot (iRebot) as an affordable, gesture-controlled vehicle that can provide a form of entertainment while conducting physical therapy. Healthy participants (n=11) executed a test maze with the iRebot for six repeated trials, three with each hand. Survey scores and quantitative metrics were evaluated to assess system usability and baseline motor performance, respectively. Wrist mobility across participants was evaluated, with an active range of motion of 39.7± 13° and 72.8± 18° for pitch and roll, respectively. In the course of conducting a single trial (time duration=87.2±67 sec), the participants performed on average 30 full wris t motion repetitions (e.g., flexion/extension). Participants rated the system\u27s usability as excellent (survey score: 85 ± 13), and all participants indicated they would prefer iRebot over standard therapy. The iRebot demonstrated potential as an evidence-based rehabilitation tool based on excellent user ratings and the ability to monitor at- home compliance and motor performance
Design and Test of an Autonomous Drone SWARM for Chemical Agent Detection
This technical report presents the details behind designing and testing a swarm of Unmanned Aerial Systems (UAS) that are capable of detecting and mapping a chemical plume. The sensor used onboard the UAS is a government-owned detector, although the technical approach used in this work is generalizable to other detectors of contaminants or chemical agents. The swarm of drones operates autonomously, with minimal user input but with operator oversight. Autonomous behaviors were built to search for and map a chemical plume over a given area. For UAS in search mode, a Lissajous pattern was chosen as the primary motion trajectory, owing to its surveying efficiency of minimizing time for distance traveled. If any of the agents within the swarm interact with a chemical plume (physical or simulated), the autonomy will cause the swarm behavior to adapt from the searching to mapping. In the mapping phase, each drone in the swarm performs circles around the chemical plume to map the perimeter of the plume. These circles are an important feature of the behavior because they allow the detectors to de-saturate from the chemicals. Finally, the team also developed and incorporated a visualization tool for real-time monitoring of chemical presence, to provide a Common Operating Picture for the user. Utilizing simulations, emulators, and real hardware, the team completed test flights of the swarm behavior to prove its functionality