New tool design for measuring tool displacement in milling

Title from PDF of title page (University of Missouri--Columbia, viewed on March 8, 2013).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Thesis advisor: Dr. Roger FalesIncludes bibliographical references.M. S. University of Missouri--Columbia 2012."December 2012"Monitoring tool displacement during a milling process allows the operator to identify when there is relative movement between the cutting tool and the workpiece. When the relative movement between the cutting tool and the workpiece becomes large enough, the displacements of the cutting tool become known as chatter. Chatter produces a dimensionally inaccurate cut, poor surface finish, tool breakage, and is the main obstacle in high speed milling. If the milling machine or operator were able to detect the smaller tool displacements leading up to chatter, then the milling operation can be altered to eliminate the onset of chatter. A new tool design to measure tool displacement during milling operations is presented and validated in this research. The concept behind this new tool design is to indirectly measure the tool's displacement in the x and y direction by attaching a thin disc perpendicular to the neck of the cutting tool. The disc will allow sensors to measure the angle of deflection in the neck of the cutting tool by measuring the resulting tilt in the disc. Measuring the disc's displacement rather than the actual tool's displacement allows for the sensors to be placed above the cutting tool and away from milling operations

The Cluster School teachers : a study in adult development.

During the 1960\u27s and 1970\u27s, because of wide-spread dissatisfaction with traditional public schooling, there was a dramatic increase in the number of alternative schools in the United States. One such school, the Cluster School (1974-1980), a democratically-run, high school program in Cambridge, Massachusetts, was the site for the first systematic application of Lawrence Kohlberg\u27s theories of just community and moral reasoning development. This thesis is a case study of ten teachers (including the author) who worked in the Cluster School. Using information collected through in-depth interviews with the teachers, it examines such matters as the formative moral influences in their lives, and the reasons why they joined the School. It then explores the ways in which being members of Cluster\u27s adult community, which included Kohlberg, influenced their own development. The thesis contends that, among other reasons, the teachers were attracted to the School because they had come from backgrounds where moral questions were accorded importance, and that once there, they created a supportive environment which promoted adult growth. The Introduction defines the thesis and its methodology, and includes a discussion of the author\u27s role as a participant observer in the study. Chapter 2 discusses the theoretical underpinnings of the School, defines the School\u27s governance structure and gives an overview of the School\u27s history. Chapter 3 presents the biographies of the teachers, each of which is followed by a summary of the salient points found in the biography. Chapter 4 addresses six recurring themes which emerge from the teacher interviews and suggests their interrelatedness to one another. Chapter 5 compares the moral atmosphere of Cluster\u27s host school with that of Cluster, and concludes that the teachers, although somewhat inadvertently, created for themselves a supportive community which encouraged their own growth and development. The chapter closes with recommendations for staff development

Junior Recital: Clay Mooney, baritone

This recital is presented in partial fulfillment of the requirements for the degree Bachelor of Music in Performance. Mr. Mooney studies voice with Oral Moses.https://digitalcommons.kennesaw.edu/musicprograms/1644/thumbnail.jp

Merleau-Ponty on Human Motility and Libet’s Paradox

In 1979, neuroscientists Libet, Wright, Feinstein and Pearl introduced the “delay-and-antedating” hypothesis/paradox based on the results of an on-going series of experiments dating back to 1964 that measured the neural adequacy [brain wave activity] of “conscious sensory experience”. What is fascinating about the results of this experiment is the implication, especially when considered in the light of Merleau-Ponty’s notions of “intentionality” and the “pre-reflective life of human motility”, that the body, and hence not solely the mind, is a thinking thing. The experiments and conclusions of Libet et al. have attracted considerable academic attention and have been used in the development of psychological theories on automotivism and the adaptive unconscious. Moreover, they have engendered a series of important considerations in respect of the question of free will. This paper outlines the connections between the findings of Libet et al. and Merleau-Ponty’s ontology as presented in the Phenomenology of Perception (1945/1962). It is not our intention to argue that the former amounts to new wine in old bottles, but rather to show counterfactually (since we offer no new scientific data and assume the conclusions of the experiments) that Merleau-Ponty’s ontology provides a theoretical framework which explains the experimental data obtained by Libet et al., and provides further speculative confirmation of the work stemming from neuro-physical research and emerging theories on the adaptive unconscious. Indo-Pacific Journal of Phenomenology, Volume 7, Edition 1 May 200

Go For the Sure Thing: An Accounting Internship/Job-Seeking Discussion Case

After the choice of college and major, the next significant decision for many accounting students is an internship. Through the experience of one of our students, this discussion case provides an opportunity for others to 1) determine what job attributes are important, 2) develop expectations for an internship experience, and 3) create a decision model for job/internship acceptance. Our student Jason made a choice between Tiny CPAs and Big Regional Firm. Both firms were located ideally. The deciding factor was the likelihood of a position being available at graduation. The internship experience was adequate, but the job offer fell throug

Wheatstone bridge configuration for evaluation of plasmonic energy transfer

We propose an internal (on-chip) Wheatstone bridge configuration to evaluate the efficiency of near-field transducers (NFT) as used in heat-assisted magnetic recording (HAMR). The electric field enhancement between the transducer and the image plane is monitored by measuring the resistance of metal electrodes composing the image plane. The absorption of the enhanced electric field causes an increase in the metal temperature, and thereby, in its resistance whose variation is monitored with an internal Wheatstone bridge which is accurately balanced in the absence of the electric field

Automated Matching of Segmented Point Clouds to As-built Plans

Terrestrial laser scanning (TLS) is seeing an increase use for surveying and engineering applications. As such, there is much on-going research into automating the process for segmentation and feature extraction. This paper presents a simple method for segmenting the interior of a building and comparing it to as-built plans. The method is based on analysing the local point attributes such as curvature, surface normal direction and underlying geometric structure. Random sampling consensus (RANSAC), region growing and voting techniques are applied to identify the predominant salient surface feature to extract wall and vertical segments. This information is used to generate a 2D plan of the interior space. A distance weighted method then automatically locates the corresponding vertices between the different datasets to transform them into a common coordinate system.A traditional survey was performed alongside the 3D point cloudcapture to compare and validate the generated 2D plans and the comparison to the existingdrawings. The accuracy of such generated plans from 3D point clouds will be explored

An Unobtrusive Method for Tracking Network Latency in Online Games

Online games are a very important class of distributed interactive applications. Their success is heavily dependant on the level of consistency that can be maintained between participants communicating in the virtual world. Achieving a high level of consistency usually involves the transmission of a large amount of network traffic. However, if the underlying network connecting participants is unable to process this traffic, then network latency will increase, which will in turn negatively impact on consistency. Many schemes exist which attempt to reduce network traffic, and thus reduce the effect of network latency on the interactive application. However, applications that employ these schemes tend to do so with little knowledge of the underlying network conditions, and assume a worst-case scenario of limited bandwidth. Such an assumption can actually cause these latency reduction schemes to perform sub-optimally, and ironically introduce more inconsistency than they reduce. Hence, it is important that online game applications become aware of network conditions, such as available bandwidth. Existing methods of estimating bandwidth operate by analysing trends in one-way latency, and require that extra data be transmitted between nodes in order to capture the latency trends. Such an approach does not suit online games, as the extra data requirements could increase network latency, and affect the ability of the application to scale to multiple participants. To deal with this issue, this paper proposes a method by which online games can unobtrusively track one-way network latency. This method requires no time-stamping information to be transmitted between participants and operates using data already being transmitted as part of the online game application, meaning that its impact on the network is minimal. NS2 simulations demonstrate that the trends collected by this method can be used to estimate bandwidth under certain conditions