Hyperspectral imaging is becoming an increasingly popular tool for high-throughput plant phenotyping, because it provides remarkable insights about the health status of plants. Feature selection a key component in hyperspectral image analysis, largely significant portion spectral features are redundant and/or irrelevant, depending on desired application. This paper presents ensemble feature method to identify most informative practical applications phenotyping. The data set contained images...

Salinity stress has significant adverse effects on crop productivity and yield. The primary goal of this study was to quantitatively rank salt tolerance in wheat using hyperspectral imaging. Four lines were assayed a hydroponic system with control treatments (0 200 mM NaCl). Hyperspectral images captured one day after application when there no visual symptoms. Subsequent necessary preprocessing tasks, two endmembers, each representing the treatment, identified image successive volume...

Plant breeding programs use easily measured traits to determine plant selection for the next cycle of testing. Often ratings (1–10) are used generalized biomechanical properties such as lodging, act a falling over due environmental conditions. In order create more repeatable means scoring lodging (bending) susceptibility, Stalker was conceived device that could and time efficient outputs independent operator bias by quantifying stalk strength proxy resistance.

Abstract Cave colonization offers a natural laboratory to study an extreme environmental shift, and diverse cave species from around the world often have converged on robust morphological, physiological behavioural traits. The Mexican tetra (Astyanax mexicanus) has repeatedly colonized caves in Sierra de El Abra Guatemala regions of north-east Mexico ~0.20–1 Mya, indicating ability adapt environment. time frame for evolution these traits any animal, however, is poorly understood. Astyanax...

The dependence of a tuning-fork quartz crystal oscillator's frequency f on temperature T is observed over the range -5 to 20°C. From this, parabolic f(T) function fit crystal's data, and used compensate for sampling period drift in an Analog Digital Converter (ADC) system based around this at various temperatures. Resolution uncertainty method are discussed.

Violent movement of crop stems can lead to failure under high winds. Known as lodging, this phenomenon is particularly detrimental cool-season cereals such oat, barley, and wheat; contributing yield economic losses. Phenotyping the cereal crops in real-time could aid breeding selecting lodging resistant cereals. Since no methods exist quantify dynamic, real time plant responses an agricultural setting, we devised a video analysis protocol mean frequency amplitude for 360° field view camera...

The fields of meteorology, surface- and groundwater hydrology, forestry are often decoupled despite the fact that they occur simultaneously at intersection living systems physical environment. In this work, we describe a system allows concurrent measurement canopy throughfall, transpiration, air temperature, pressure, humidity multiple heights, in addition to soil moisture several surface water parameters. LEAF is designed be generalizable many other hydrology meteorology applications,...

Stem lodging is the bending or breakage of stems in wind that result negative economic impacts to producers and processors small grain crops. To address this issue, plant breeders attempt quantify using proxy traits such as stem structure biomechanics. a function both strength elasticity. In paper, we explore biomechanics approaching lodging, permanent bending, condition. Oat, wheat, two types barley varying resistance were exposed standard growing conditions over course season. Their...

Accurately quantifying animal activity and movements is of fundamental importance in a broad range disciplines, from biomedical research to behavioral ecology. In many instances, it desirable measure natural controlled sensory environments which the animals are not physically or chemically restrained, but their nevertheless constrained occur within fixed volume. Here, we describe novel device quantify small response stimulation. The consists an Arduino inertial measurement unit that senses...

In order to address the worldwide growing demand for food, agriculture is facing certain challenges and limitations. One of important threats limiting crop productivity salinity. Identifying salt tolerate varieties crucial mitigate negative effects this abiotic stress in agricultural production systems. Traditional measurement methods stress, such as biomass retention, are labor intensive, environmentally influenced, often poorly correlated salinity alone. study, hyperspectral imaging, a...

Synopsis Lodging of small grains due to environmental stresses results in yield loss, quality reduction, and difficulties with mechanical harvesting, which lead economic consequences. New technological discoveries allow for faster situ measurements determining the mechanics loading stress plant movement. The overall measurement movement can be a very sophisticated method mechanically test predict behavior stems when exposed wind. We investigated inertial plants during different magnitude...

Most patients with glaucoma exhibit elevated intraocular pressure (IOP). A cost effective device that allows the patient to measure IOP at regular intervals may reduce vision loss. This research tested Bausch & Lomb Proview self tonometer against a calibrated force meter. It further compared results from clinical gold standard, Goldmann tonometer. Results show has inaccuracies in calibration and uncertainties applications. If Proview's is corrected (using our results, e.g.), can be reduced,...

Many in situ sensing applications for bioacoustic ecology have suffered from a lack of means to communicate information near real time. The monitoring incident noise on an individual animal and its behavioral response it were the focus this project. sensor platform described herein may be used create acoustic field maps habitat near-realtime.

Using multiple acoustic sensors in an array for estimating sound source location relies on time synchrony among the devices. When independent methods—such as GPS stamps—are unavailable, precision of base individual becomes one main sources error synchrony, and consequently increases uncertainty estimates. Quartz crystal oscillators, which many sampling rate timing, have a vibration frequency that varies with temperature f(T). Each oscillator exhibits different frequency-temperature...

Abstract Substantial morphological and behavioral shifts often accompany rapid environmental change, yet, little is known about the early stages of cave colonization. Relative to surface streams, caves are extreme environments with perpetual darkness low nutrient availability. The Mexican tetra ( Astyanax mexicanus ), has repeatedly colonized throughout Mexico, suggesting an ability adapt these conditions. Here, we survey for phenotypic differences between a population A. that recently Honey...