Improving Logistics Efficiency Through Collaborative Truck Routing

The logistics industry is among the world’s largest and most essential. Specifically, trucking is a massive component of the modern logistics system. In 2012, truck transportation carried 68% of all freight tonnage in the U.S. However, trucking currently faces significant problems with efficiency and sustainability. Of all miles driven by trucks yearly in the U.S., 25% are driven with empty loads and 36% are driven with underutilized loads. In addition to this economic inefficiency, the industry faces social and environmental challenges. Driver turnover rates are near 100%, and trucking accounts for a significant level of greenhouse gas emissions. One potential cause of these issues is the segmented nature of the industry which results in transportation service providers routing their shipments independently of each other, therefore increasing the number of miles driven and emissions produced. Collaborative routing, wherein providers work together to share trucks, routes, and resources, is one approach to solving this issue. However, current research has yet to develop a method that is both effective and efficient. This research aims to develop a model for a collaborative routing methodology wherein trucking service providers would share resources to increase load efficiency while decreasing emissions and long-haul drive frequency

The Joys and Challenges of Stickworking

After thirty years of springing large-scale sapling sculptures into unlikely places, it has become easier for me to distill some of the constants that characterize my work. In that regard, the work is temporary, uses entangle - ment as a simple fastener, employs a drawing style akin to works on paper, always needs a sponsor, capitalizes on volunteer help, and is open to the public during the building phase. Further, the work has always sought to find reciprocity with the sculpture site and, most importantly, to enliven the imagination of the viewers

Catholic opinion and United States recognition policy

Includes vita.SCOPE AND PURPOSE OF THE STUDY: This study of the ideas of American Catholic opinion-makers is centered on the controversial issues of Soviet recognition (1917-1933) and the nonrecognition of Peking (1949-1962). The relationship between Catholics and these two diplomatic problems is worthy of individual attention. It is proposed that (1) a definite Catholic interest emerged on the question of recognizing Communist governments, (2) the recognition debates concerning Moscow and Peking are deserving of special consideration due to their duration and intensity, and (3) the topic of recognition is of basic importance to other diplomatic problems and therefore offers a convenient approach to a greater understanding of those problems.Includes bibliographical references

A study of the effectiveness of the 1936-1949 business teacher education curriculum at Teachers College of Connecticut, with implications for curriculum revision.

Thesis (M.A.)--Boston Universit

Direct and inverse scattering of classical waves at oblique incidence to stratified media via invariant imbedding equations

Direct and inverse scattering problems in stratified media can be solved by first using invariant imbedding techniques to derive integro-differential equations and boundary conditions for the reflection kernels. These equations can be solved numerically to find the reflection kernels in the direct problem or the material parameter functions in the inverse problem. Previous work dealt with plane waves at normal incidence to stratified meda. This dissertation extends the method to the case of oblique incidence. Integro-differential equations are derived for lossless acoustic, electromagnetic, and elastic problems. Direct algorithms and complete inversion algorithms are given in each case. Numerical examples are provided. A final chapter gives examples of the use of Hamilton\u27s quaternion analysis to factor three-dimensional wave equations

Shadow Codes over Z4

AbstractThe notion of a shadow of a self-dual binary code is generalized to self-dual codes over Z4. A Gleason formula for the symmetrized weight enumerator of the shadow of a Type I code is derived. Congruence properties of the weights follow; this yields constructions of self-dual codes of larger lengths. Weight enumerators and the highest minimum Lee, Hamming, and Euclidean weights of Type I codes of length up to 24 are studied

School Leadership, Teachers’ Roles in School Decisionmaking, and Student Achievement

This working paper summarizes the results of a study of leadership in elementary and secondary schools. The study focused in particular on instructional leadership – the extent to which school leaders focus on the core activities of teaching and learning – and teacher leadership – the extent to which teachers have input into school decision-making. This paper is drawn from the full report of the study, entitled School Leadership Counts (Ingersoll, Dougherty and Sirinides 2017), available at www.newteachercenter.org