West Point Invitational Relay Race

General note: Title and date provided by Bettye Lane.

USSR Nadyezhda Karyakina hurdling at West Point Women's Pentathlon meet

General note: Title and date provided by Bettye Lane.

(Shot Put) International meet at West Point

General note: Title and date provided by Bettye Lane.

Colgate games 200 meter race at Madison Square Garden

General note: Title and date provided by Bettye Lane.

(Shot Put) International meet at West Point

General note: Title and date provided by Bettye Lane.

High jump form at International Pentathlon Meet at West Point

General note: Title and date provided by Bettye Lane.

(Shot Put) International meet at West Point

General note: Title and date provided by Bettye Lane.

Deborah Bretschneider from Queens College during West Point's Women's Pentathlon

General note: Title and date provided by Bettye Lane.

International Pentathlon at West Point (High Jump)

General note: Title and date provided by Bettye Lane.

Joni Huntley, high jump (Colgate exhibition)

General note: Title and date provided by Bettye Lane.

Joni Huntley, high jump [Colgate exhibition]

General note: Title and date provided by Bettye Lane.

Shot Put during the International meet at West Point

General note: Title and date provided by Bettye Lane.

Turning Passive Detection Systems into Field Experiments: An Application Using Wetland Fishes and Enclosures to Track Fine-Scale Movement and Habitat Choice

Understanding habitat selection and movement remains a key question in behavioral ecology. Yet, obtaining a sufficiently high spatiotemporal resolution of the movement paths of organisms remains a major challenge, despite recent technological advances. Observing fine-scale movement and habitat choice decisions in the field can prove to be difficult and expensive, particularly in expansive habitats such as wetlands. We describe the application of passive integrated transponder (PIT) systems to field enclosures for tracking detailed fish behaviors in an experimental setting. PIT systems have been applied to habitats with clear passageways, at fixed locations or in controlled laboratory and mesocosm settings, but their use in unconfined habitats and field-based experimental setups remains limited. In an Everglades enclosure, we continuously tracked the movement and habitat use of PIT-tagged centrarchids across three habitats of varying depth and complexity using multiple flatbed antennas for 14 days. Fish used all three habitats, with marked species-specific diel movement patterns across habitats, and short-lived movements that would be likely missed by other tracking techniques. Findings suggest that the application of PIT systems to field enclosures can be an insightful approach for gaining continuous, undisturbed and detailed movement data in unconfined habitats, and for experimentally manipulating both internal and external drivers of these behaviors.

Temperature and composition profile during double-track laser cladding of H13 tool steel

Multi-track laser cladding is now applied commercially in a range of industries such as automotive, mining and aerospace due to its diversified potential for material processing. The knowledge of temperature, velocity and composition distribution history is essential for a better understanding of the process and subsequent microstructure evolution and properties. Numerical simulation not only helps to understand the complex physical phenomena and underlying principles involved in this process, but it can also be used in the process prediction and system control. The double-track coaxial laser cladding with H13 tool steel powder injection is simulated using a comprehensive three-dimensional model, based on the mass, momentum, energy conservation and solute transport equation. Some important physical phenomena, such as heat transfer, phase changes, mass addition and fluid flow, are taken into account in the calculation. The physical properties for a mixture of solid and liquid phase are defined by treating it as a continuum media. The velocity of the laser beam during the transition between two tracks is considered. The evolution of temperature and composition of different monitoring locations is simulated.