HURDLE COUNT-DATA MODELS IN RECREATION DEMAND ANALYSIS

When a sample of recreators is drawn from the general population using a survey, many in the sample will not recreate at a recreation site of interest. This study focuses on nonparticipation in recreation demand modeling and the use of modified count-data models. We clarify the meaning of the single-hurdle Poisson (SHP) model and derive the double-hurdle Poisson (DHP) model. The latter is contrasted with the SHP and we show the DHP is consistent with Johnson and Kotz's zero-modified Poisson model.Resource /Energy Economics and Policy,

Tunable Luminescent Carbon Nanospheres with Well-Defined Nanoscale Chemistry for Synchronized Imaging and Therapy

Major advances in the medical field have shortened surgical recovery times from weeks to only a few days. Reducing the size of the surgical incision is one key to this breakthrough. However, to decrease the incision size, the diagnostic and therapeutic tools must become smaller too. The theranostic nanoplatform was developed to address that issue, but to date, several methodologies have been developed with materials that have low biodegradability and biocompatibility, and thus cannot be clinically tested. In addition, many require awkward synthesis or tedious purification processes, making them difficult to scale up to the large quantities needed for clinical use. To be effective, theranostic nanoplatforms must target a specific cell, have controlled drug release, and have robust sensors or imaging functionality to overcome physical barriers to in vivo diagnostics and therapy. To develop a theronostic nanoplatform that is viable for clinical testing, ISTC’s senior chemist John Scott partnered with University of Illinois researchers to develop a tunable luminescent carbon nanoparticles (LCN) that could be used as a theronostic nanoplatform that has both optical signaling and pharmacokinetic properties. Results published in Mukherjee, P., Misra, S.K., Gryka, M.C., Chang, H.‐H., Tiwari, S., Wilson, W.L., Scott, J.W., Bhargava, R. and Pan, D. (2015), Tunable Luminescent Carbon Nanospheres with Well‐Defined Nanoscale Chemistry for Synchronized Imaging and Therapy. Small, 11: 4691-4703. doi:10.1002/smll.201500728Ope

Instructions for Using Logic

This document provides instructions on the use of Logic , a digital logic simulator for the Macintosh written for Dartmouth students in the Machine Architecture and Digital Electronics courses

Interim Performance Report Experimental Use of Thermoplastic Pavement-Striping Materials

The purposes and objectives of this study are: 1) to evaluate the application and performance characteristics of hot-melt plastic, pavement-striping materials which are presently prominent and known commercially as Catatherm and Perma-Line ; 2) to compare the performance of these materials with the performance of painted stripes applied and renewed according to the current practices of the Kentucky Department of Highways; and 3) to evaluate the economics of these striping materials in terms of cost per mile per day of useful life. The project is described more fully in the Proposal ... (approved by Division Engineer, September 7, 1962) and in Report No. 1 (pre-Construction Report) submitted September 19, 1962. Report No. 2 (Interim Construction Report) was submitted in April, 1963; and Report No. 3 (Final Construction and Interim Performance Report) was submitted May 15, 1964. Attachment No. 1 shows the location of the test sites

Junior Faculty Engagement at iSchools: Personal Experience during the First Several Years

This roundtable discussion will explore how junior faculty at iSchools have been able to embed their research, teaching, and service activities within their schools, the larger institutions, and broader communities. The session will also focus on the ways in which junior faculty have received guidance in their roles--from the job search through the first several years in a tenure-track position. Roundtable leaders represent a variety of institutions and experiences--as faculty at the University of Illinois at Urbana-Champaign [WJM], the University of Maryland [SP], the University of North Carolina at Chapel Hill [PME], and the University of Texas at Austin [MW], and with doctoral-level preparation at the University of North Carolina at Chapel Hill [WJM, MW], the University of Toronto [SP], and the University of Washington [PME]. While the annual junior faculty mentoring event at the iConference specifically targets junior faculty as participants, this roundtable session offers a more inclusive environment for the discussion of this topic, specifically engaging doctoral students and senior faculty as well as their junior colleagues

A biomechanical analysis of the heavy sprint-style sled pull and comparison with the back squat

This study compared the biomechanical characteristics of the heavy sprint-style sled pull and squat. Six experienced male strongman athletes performed sled pulls and squats at 70% of their 1RM squat. Significant kinematic and kinetic differences were observed between the sled pull start and squat at the start of the concentric phase and at maximum knee extension. The first stride of the heavy sled pull demonstrated significantly (

The Integration of Rural Households into Ruminant Livestock Industries in China

A major determinant of rural development in China is the way by which rural households integrate with rural industries. Three forms of integration market integration, vertical integration and integration through local groups are investigated. Policy measures that may facilitate household integration, household specialisation and market segmentation are identified. Findings for the ruminant livestock sector are widely applicable to other agricultural industries in China.China, rural development, livestock, markets, vertical integration, Livestock Production/Industries, Q13, Q18, L1,