Impact of Random Deployment on Operation and Data Quality of Sensor Networks

Several applications have been proposed for wireless sensor networks, including habitat monitoring, structural health monitoring, pipeline monitoring, and precision agriculture. Among the desirable features of wireless sensor networks, one is the ease of deployment. Since the nodes are capable of self-organization, they can be placed easily in areas that are otherwise inaccessible to or impractical for other types of sensing systems. In fact, some have proposed the deployment of wireless sensor networks by dropping nodes from a plane, delivering them in an artillery shell, or launching them via a catapult from onboard a ship. There are also reports of actual aerial deployments, for example the one carried out using an unmanned aerial vehicle (UAV) at a Marine Corps combat centre in California -- the nodes were able to establish a time-synchronized, multi-hop communication network for tracking vehicles that passed along a dirt road. While this has a practical relevance for some civil applications (such as rescue operations), a more realistic deployment involves the careful planning and placement of sensors. Even then, nodes may not be placed optimally to ensure that the network is fully connected and high-quality data pertaining to the phenomena being monitored can be extracted from the network. This work aims to address the problem of random deployment through two complementary approaches: The first approach aims to address the problem of random deployment from a communication perspective. It begins by establishing a comprehensive mathematical model to quantify the energy cost of various concerns of a fully operational wireless sensor network. Based on the analytic model, an energy-efficient topology control protocol is developed. The protocol sets eligibility metric to establish and maintain a multi-hop communication path and to ensure that all nodes exhaust their energy in a uniform manner. The second approach focuses on addressing the problem of imperfect sensing from a signal processing perspective. It investigates the impact of deployment errors (calibration, placement, and orientation errors) on the quality of the sensed data and attempts to identify robust and error-agnostic features. If random placement is unavoidable and dense deployment cannot be supported, robust and error-agnostic features enable one to recognize interesting events from erroneous or imperfect data

Alien Registration- Dargie, Joseph (Mattawamkeag, Penobscot County)

https://digitalmaine.com/alien_docs/7140/thumbnail.jp

This post is sponsored but all opinions are my own: does fashion blogging offer an authentic voice? An investigation into the credibility of fashion blogger sponsored content and blogger perspectives on the tensions between authenticity and commercialisation.

This study investigates the impact of commercial sponsorship upon fashion blogging, a form of digital communication that has become important in influencing online consumer behaviour. Fashion companies appreciate the marketing value of blogs and have utilised them to their own advantage. As a result, the fashion blogosphere has become increasingly commercialised. Existing research into changes in fashion blogging has generally focused upon the attitudes and perspectives of blog readers. Relatively little research investigates the attitude of fashion bloggers themselves. This thesis therefore specifically examines the attitudes of UK fashion bloggers as regards the impact of commercial sponsorship upon their practice and on the credibility and authenticity of their blog output. This study takes an interpretative, qualitative research approach with a combination of an online questionnaire and in-depth interviews. It focuses upon over 300 fashion bloggers divided into three distinct groups: young and old active bloggers and significantly a third group of bloggers who have discontinued the activity. A review of existing literature identified a number of key areas for exploration: the effect of sponsorship upon blogger motivation, design and content of blog output, the pressures upon bloggers resulting from accepting sponsorship rewards, blogger perception of the impact that commercialisation may have had upon their practice values, the potential effect of sponsorship upon their relationship with readers, their views on the changing status of the fashion blogosphere and their role as fashion bloggers. The findings offer a number of new perspectives upon the evolving fashion-blog sector, especially with reference to the following themes: the personal pressures felt by some fashion bloggers as a consequence of their involvement with commercial partnerships and the negative impact that this can have upon their mental health; the increased discrepancy between the ways in which fashion bloggers talk about their practice and the reality of their actual online behaviour as regards disclosure of sponsored material, self-censorship and reluctance to be critical; the increased priority that many fashion bloggers now place upon commercial opportunities rather than their relationship with readers. This research is of significance as it has explored the tensions affecting fashion blogger attitudes and practice from their own point of view. It has specifically analysed the general decline of social community in the fashion blogosphere and the impact that this has had upon the authenticity and credibility of the fashion blogger voice

Finding The Ways Through The Phase II Maze: Coastal Cold Weahter MS4s And The EPA\u27s New Stormwater Regulatory Program

The coastlines of the United States are composed of over 90,000 miles of estuarine waters and nearly 60,000 miles of ocean shoreline. The aesthetic allure and quality of life offered by this valuable national natural resource continues to catalyze explosive population migrations coastward, and demographic experts predict that up to seventy-five percent of the United States population will live, work, or vacation along the nation\u27s shorelines within the next decade. Unfortunately, in most areas this increased use is sure to carry with it a substantial environmental price in the form of increased pollution. The stark reality of the current and future seaward migration is that it will have significant adverse effects on the fragile marine and coastal ecosystems that coastal communities depend on for industry, recreation, tourism and healthy living if affirmative steps are not immediately taken to control its impact. To complicate matters further, the appropriate steps are neither simple, clear-cut, nor, in many instances, agreed-upon, and their formulation and implementation will necessarily require a pooling of public and private resources, political consensus and synergistic behavior among state and local governments, private industry and the general citizenry if sustainable urbanism is ever to be achieved in coastal regions. This Comment concerns itself principally with an acute seasonal coastal pollution problem that has been historically ignored and chronically under-studied-seasonal storm and meltwater runoff in coastal cold weather urban municipalities-and how the implementation of recent federal stormwater rules, namely the Environmental Protection Agency\u27s (EPA\u27 s) Phase IF\u27 stormwater regulations, affect cash-strapped state and local governments in watershed regions who are faced with competing policy concerns and unbalanced budgets. This Comment endeavors to provide an overview of the entire issue, first from a legal, then a technological, and, finally, from a policy perspective. However, in order to fully understand the breadth of this problem, and Congress\u27s response to it, one must first gain a cursory understanding of the nature in which, because of variable weather and topographical patterns, toxic foreign substances are deposited within the ecosystem by way of storm and meltwater runoff, and, when deposited, how such substances affect coastal ecosystems. What follows is a brief introduction to the problem posed by stormwater runoff in general and an explanation of Congress\u27s response

Current practices in the organization, development, and management of community music groups in the Greater Boston area.

Thesis (M.M.E.)--Boston Universit

The Relationship Between Personality Types and Occupational Stress of Teachers in Selected Private Higher Education Institutions of Addis Ababa

The objective of this study was to examine the relationship between personality types and occupational stress of teachers in private higher education institutions of Addis Ababa. The study employed correlational research design and the lottery method was used to select 154 participants. Two instruments were used which were Big Five Inventory (BFI) and Teachers Occupational Stress Scale (TOSS). To analyze the collected data, both descriptive and inferential statistics were applied. The findings of the study revealed that 30.3% of the teachers experienced a low level of stress, 42.8% experienced moderate levels of stress, and 26.9% experienced high levels of occupational stress. Female teachers score significantly higher occupational stress (M=57.74, SD=11.24) as compared to the males (M=47.76, SD= 5.24) and the t-test yielded a statistically significant difference between the mean scores of male and female teachers on the overall occupational stress scale (t=-4.491, df=143, P=.000, α=0.05). The result also indicated that there is a significant negative correlation between occupational stress and conscientiousness (r=-0.442, p<0.05), agreeableness and occupational stress (r=-0.371, p<0.05), and extraversion and occupational stress (r=-0.347, p<0.05).  However, there is no statistically significant relationship between openness and occupational stress of teachers (r=-0.002, p>0.05). There was a significant positive correlation between neuroticism and the occupational stress of teachers (r=0.211, p<0.05). Moreover, the results revealed that personality has a statistically significant negative link with occupational stress (r=-0.338, p<0.05). Keywords: Personality Types, Occupational Stress DOI: 10.7176/JEP/12-4-03 Publication date: February 28th 202

Prevalence and associated factors of undernutrition among adult tuberculosis patients in some selected public health facilities of Addis Ababa, Ethiopia: a cross-sectional study

BACKGROUND: The prevalence of undernutrition among adult tuberculosis patients is high in developing countries. However it has not been well explored in Ethiopian situation. Therefore the aim of this study was to determine the prevalence of undernutrition and its associated factors among adult TB patients in some selected public health facilities of Addis Ababa. METHODS: An institution based cross-sectional study was conducted. The total sample size of the study was 360. The sample size was allocated to the selected health facilities proportional to their size and study subjects were consecutively enrolled to the study during the study period. Data were collected using a pretested structured questionnaire. The data were entered and cleaned by using EPI info version 3.6.1 and transferred to SPSS version 20 for analysis. Bivariate and multivariate logistic regression analyses were done to identify factors that are associated with undernutrition. RESULTS: The prevalence of undernutrition was 39.7 % (23.6 % mild, 8.6 % moderate and 7.2 % severe undernutrition). Functional status of the patients (AOR = 2.57; 95 % CI = 1.42, 4.68) and dietary counselling (AOR = 1.79; 95 % CI = 1.03, 3.12) were factors independently associated with undernutrition among adult TB patients. CONCLUSION: The prevalence of undernutrition was found to be very high. Regular nutritional assessment and dietary counselling should be part of the routine care of adult TB patients