The current training model for paraeducators traditionally consists of single-day workshops, emails, newsletters, in-service meetings or other similarly isolated and infrequent tips or no training at all. Such practices have caused many paraeducators and teachers to cite a lack of efficient and effective training as one of the major difficulties in their job. The purpose of the study was to establish a causal relationship between the independent variable: the direct instruction of precorrection through modeling and guided practice with bug-in-the-ear feedback and the dependent variable, the performance or nonperformance of positive behavior support strategies in the classroom. The study took place at an urban middle school located in northern Utah. The study's three participants were paraeducators who worked in a self-contained classroom for students with severe disabilities. The intervention consisted of a three-phase lesson for each of the three target skills: (a) a training phase, (b) an independent phase, and (c) a follow up phase. Data indicate a positive functional relation between the intervention and the acquisition and maintenance of the desired skills. On average, participants performed more than 90% of the steps of the desired behaviors across all phases of the intervention and maintained the skills over time in a natural setting after relatively little instruction, no additional time outside of the classroom, and with materials already available at most schools. The success of this training model and its flexible framework further suggest that its use could be expanded in multitudinous ways. As this is the first known study of its kind, there are now numerous avenues of new research possibilities both in the area of paraeducator training, but also teacher training and even training in other work industries. This is an exciting new avenue for research and the improvement of working conditions and the delivery of instruction in schools.

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Field and greenhouse experiments were conducted from 2003 to 2006 at the Texas A&M University Agricultural Research and Extension Center at Beaumont and commercial rice fields throughout the Texas Rice Belt with the objectives of characterizing the nature of rice stink bug, Oebalus pugnax (Fabricius), damage to rice, Oryza sativa L., and developing visual sampling methods and sequential sampling plans. During 2005 and 2006, in greenhouse and field experiments, rice plants were caged and infested with adult or nymph O. pugnax during the heading, milk or soft dough stage. No differences were found in the weight of rough, brown or milled rice infested with O. pugnax during different stages. More peck was found in grain from plants infested during milk and soft dough than heading. Adult O. pugnax caused more peck than nymphs in all stages. In field experiments conducted during 2005 and 2006, single rice panicles were caged at the onset of heading and infested with one male or female O. pugnax for 48 h during the heading, milk, soft or hard dough stage. No differences were found in the weight of rough rice per panicle infested with O. pugnax. No differences were detected in percentage peck caused by male and female O. pugnax. Infestation during all stages of panicle development produced significantly more peck than no infestation In greenhouse experiments conducted during 2004 and 2005, rice plants at the pre-heading, heading, milk and soft dough stages were caged together and infested with male and female O. pugnax. Insects were observed for a period of five days and their preferences recorded. More insects were observed on milk and soft dough than on pre-heading or heading plants.Commercial rice fields throughout the Texas Rice Belt were sampled during 2003 and 2004 and visual sampling methods were compared to the sweep net method of sampling. Analysis of covariance showed that one sweep of the “long stick” or two sweeps of the “sweep stick” compared favorably to 10 sweep net sweeps. Analyses revealed that visual sampling using the long stick is more cost-reliable than sweep net sampling for O. pugnax in Texas rice fields.

Field and greenhouse experiments were conducted from 2003 to 2006 at the Texas A&M University Agricultural Research and Extension Center at Beaumont and commercial rice fields throughout the Texas Rice Belt with the objectives of characterizing the nature of rice stink bug, Oebalus pugnax (Fabricius), damage to rice, Oryza sativa L., and developing visual sampling methods and sequential sampling plans. During 2005 and 2006, in greenhouse and field experiments, rice plants were caged and infested with adult or nymph O. pugnax during the heading, milk or soft dough stage. No differences were found in the weight of rough, brown or milled rice infested with O. pugnax during different stages. More peck was found in grain from plants infested during milk and soft dough than heading. Adult O. pugnax caused more peck than nymphs in all stages. In field experiments conducted during 2005 and 2006, single rice panicles were caged at the onset of heading and infested with one male or female O. pugnax for 48 h during the heading, milk, soft or hard dough stage. No differences were found in the weight of rough rice per panicle infested with O. pugnax. No differences were detected in percentage peck caused by male and female O. pugnax. Infestation during all stages of panicle development produced significantly more peck than no infestation In greenhouse experiments conducted during 2004 and 2005, rice plants at the pre-heading, heading, milk and soft dough stages were caged together and infested with male and female O. pugnax. Insects were observed for a period of five days and their preferences recorded. More insects were observed on milk and soft dough than on pre-heading or heading plants.Commercial rice fields throughout the Texas Rice Belt were sampled during 2003 and 2004 and visual sampling methods were compared to the sweep net method of sampling. Analysis of covariance showed that one sweep of the “long stick” or two sweeps of the “sweep stick” compared favorably to 10 sweep net sweeps. Analyses revealed that visual sampling using the long stick is more cost-reliable than sweep net sampling for O. pugnax in Texas rice fields.

The Ubuntu Linux Distribution represents a massive investment of time and human effort to produce a reliable computing experience for users. To accomplish these goals, software bugs must be tracked and fixed. However, as the number of users increase and bug reports grow advanced tools such as data mining must be used to increase the effectiveness of all contributors to the project. Thus, this report involved collecting a large amount of bug reports into a database and calculating relevant statistics. Because of the diversity and quantity of bug reports, contributors must find which bugs are most relevant and important to work on. One study in this report created an automatic way to determine who is best fit to solve a particular bug by using classification techniques. In addition, this report explores how to initially classify if a bug report will be eventually marked invalid or not. / text

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A software Bug report contains information about the bug in the form of problem description and comments using natural language texts. Managing reported bugs is a significant challenge for a project manager when the number of bugs for a software project is large. Prior to the assignment of a newly reported bug to an appropriate developer, the triager (e.g., manager) attempts to categorize it into existing categories and looks for duplicate bugs. The goal is to reuse existing knowledge to fix or resolve the new bug, and she often spends a lot of time in reading a number of bug reports. When fixing or resolving a bug, a developer also consults with a series of relevant bug reports from the repository in order to maximize the knowledge required for the fixation. It is also preferable that developers new to a project first familiarize themselves with the project along with the reported bugs before actually working on the project. Because of the sheer numbers and size of the bug reports, manually analyzing a collection of bug reports is time-consuming and ineffective. One of the ways to mitigate the problem is to analyze summaries of the bug reports instead of analyzing full bug reports, and there have been a number of summarization techniques proposed in the literature. Most of these techniques generate extractive summaries of bug reports. However, it is not clear how useful those generated extractive summaries are, in particular when the developers do not have prior knowledge of the bug reports. In order to better understand the usefulness of the bug report summaries, in this thesis, we first reimplement a state of the art unsupervised summarization technique and evaluate it with a user study with nine participants. Although in our study, 70% of the time participants marked our developed summaries as a reliable means of comprehending the software bugs, the study also reports a practical problem with extractive summaries. An extractive summary is often created by choosing a certain number of statements from the bug report. The statements are extracted out of their contexts, and thus often lose their consistency, which makes it hard for a manager or a developer to comprehend the reported bug from the extractive summary. Based on the findings from the user study and in order to further assist the managers as well as the developers, we thus propose an interactive visualization for the bug reports that visualizes not only the extractive summaries but also the topic evolution of the bug reports. Topic evolution refers to the evolution of technical topics discussed in the bug reports of a software system over a certain time period. Our visualization technique interactively visualizes such information which can help in different project management activities. Our proposed visualization also highlights the summary statements within their contexts in the original report for easier comprehension of the reported bug. In order to validate the applicability of our proposed visualization technique, we implement the technique as a standalone tool, and conduct both a case study with 3914 bug reports and a user study with six participants. The experiments in the case study show that our topic analysis can reveal useful keywords or other insightful information about the bug reports for aiding the managers or triagers in different management activities. The findings from the user study also show that our proposed visualization technique is highly promising for easier comprehension of the bug reports.

From 1991 to 1994 inclusively, a field and laboratory study was undertaken on egg parasitoids of the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois) to determine their potential in controlling their host. Five species were found to parasitize Lygus eggs in southwestern Quebec. They were three mymarids: Anaphes iole Girault, Polynema pratensiphagum (Walley), and Erythmelus miridiphagus Dozier (Mymaridae) and two scelionids: Telenomus nysivorus Huggert and Telenomus n.sp. (a new species near strelzovi Vasiliev) (Scelionidae). The maximum levels of field parasitism by these parasitoids were 20, 70, 35, and 70% (for both species of Telenomus), respectively. The field parasitism was determined on Lygus eggs inserted in Contender green beans, Phaseolus vulgaris L., Irish cobbler potatoes, Solanum tuberosum L., and alfalfa, Medicago sativa L. P. pratensiphagum and Telenomus were the most abundant parasitoid species recorded. / In 1991 and 1992 the seasonal occurrences of these parasitoids were investigated in three different habitats: mixed weeds, alfalfa, and crown vetch, Coronilla varia L. In both years Telenomus n.sp. was the most numerous parasitoid in all three habitats throughout the season, and had a strong synchrony with L. lineolaris populations. / The laboratory and field monitoring experiments on the overwintering of A. iole, P. pratensiphagum and E. miridiphagus indicated that the presence of an alternative host is essential for the overwintering of these parasitoids. The eggs of the alfalfa plant bug, Adelphocoris lineolatus (Geoze) were the most common overwintering host for all three mymarids and Canada fleabane, Erigeron canadensis L. sustained more Adelphocoris eggs and egg parasitoids than other weed hosts. / In the laboratory the parasitoid survival, mortality, fecundity, and adult longevity were determined for P. pratensiphagum, A. iole and Telenomus n.sp. The females of all three species lived longer than males, but males emerged 24 hours before females, and all are solitary parasitoids. Telenomus n.sp. showed a higher rate of survival (93%) and a higher rate of parasitism (87%) than other species under laboratory conditions. / For rearing L. lineolaris, potato sprouts, S. tuberosum were found to be the medium preferable to potato slices and Patana artificial diets. This medium is worthy of further investigation for use in augmenting the egg parasitoids of L. lineolaris.

Protective coloration such as aposematism and crypsis occurs in many insects but only a few species alter their defensive strategy during the same instar. We hypothesize the adult shield bug Graphosoma lineatum with an alternating black and non-melanised longitudinal striation exhibit such a change in defensive coloration. In Sweden, the non-melanised stripes of the pre-hibernation G. lineatum are pale brown and cryptic but they change during hibernation to red and aposematic. We have tested the adaptive functions of coloration of the two G. lineatum forms against bird predators. In Paper I we used great tits as predators and measured detection time of the two forms against a background of dry grass and plants, simulating late-summer conditions. We found that the birds took longer time to find the pale than the red form. Thus, the pale form of G. lineatum is more cryptic in a dry environment than the red form. In Paper II and III we used naïve predators and measured attack rate/latency on red and pale adults and fifth-instar larvae (black and brown) to investigate avoidance and generalisation between the stages. In Paper II domestic chicks initially found the red form most intimidating, but both adult forms are more intimidating than the larva. Moreover, there was a broad generalisation among forms. In Paper III naïve great tits did not find the red form significantly more aversive than the pale adult. Neither the chicks nor the tits showed any difference in the speed of avoidance learning between the two adult colour forms. In Paper IV the shieldbugs themselves were the main focus as we compared activity levels in the different colour forms and found that G. lineatum alters behaviour in accordance to their protective strategy. Thus they were significantly less active during the cryptic phase. Taken together, these experiments suggest that the pale brown adult invests in a cryptic strategy at the cost of reduced protection from aposematism, whereas the red adult benefits from aposematism at the cost of reduced camouflage. / At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Manuscript. Paper 4: Accepted.