Many state agencies consider exclusive truck facilities to be an alternative to handle the safety and operational issues due to the increasing truck volumes. No such facilities exist, and there are no standard tools or procedures for measuring safety performance of an exclusive truck facility. This thesis aims at identifying factors that affect truck crashes, whose results could be used for better designing exclusive truck facilities. To accomplish the objectives of this thesis, five years' roadway and crash data for Texas was collected to develop a comprehensive crash database. Negative binomial regression models were used to establish a relationship between truck crashes and various environmental, geometric and traffic variables. Separate models were developed for truck-related (involving at least one truck and another vehicle), truck-only (two trucks or more) and single-truck crashes. The results suggested that the percentage of trucks in Average Annual Daily Traffic (AADT), classification of the roadway (Rural/Urban), posted speed limit, surface condition, alignment and shoulder width are associated with truck crashes. It was observed that truck-related and truck-only crashes decreased as the percentage of trucks increased on freeway facilities. Based on conclusions derived from the literature review and statistical analyses, straight segments with wider shoulders and uniform grades are recommended for exclusive truck facilities. It is also recommended to provide ramps, horizontal and vertical curvature and signing based on truck size, driver eye height, braking ability and maneuverability. These models were developed using mixed-flow traffic data to understand the association of various factors with truck crashes. These models should not be used directly to estimate or predict truck crashes. Further analysis with more detailed data under different flow conditions might help in quantifying the safety performance of exclusive truck facilities.

The purpose of this paper is to use the model revised by Ferris et al. (2002) to study the the Effect of personal positive affect¡Bpersonal negative affect¡Borganizational formalization and organizational centralization on perceptions of organizational politics by SPSS 15.0 for windows and hierachical linear model( HLM). The sample consisted of 1890 employee selected from 41 organizations covering 9 industrial sectors in Taiwan. The data was analyzed by statistical methods are descriptive static, factor analysis, reliability analysis, correlation analysis and HLM analysis. For SPSS analysis,the major findings of this study as fallow: 1. perceptions of organizational politics were found have significant relevant with personal positive affect, personal negative affect and organizational centralization 2. perceptions of organizational politics were found have no significant relevant with organizational formalization. For HLM analysis,the major findings of this study as fallow: 1.Personal positive affect had a significant effect on perceptions of organizational politics. 2.Personal negative affect had a significant effect on perceptions of organizational politics. 3.Organizational centralization had a significant effect on perceptions of organizational politics. 4.Organizational formalization had no significant effect on perceptions of organizational politics. 5.Organizational centralization had moderate effect on the relationship between personal negative and perceptions of organizational politics. 6.Organizational centralization had no moderate effect on the relationship between personal positive and perceptions of organizational politics. 7.Organizational formalization had no moderate effect on the relationship between personal negative and perceptions of organizational politics. 8.Organizational formalization had no moderate effect on the relationship between personal positive and perceptions of organizational politics.

This study is based on the fundamentals of Perceptions of Organizational Politics¡]POP¡^proposed by Ferris, Adams, Kolodinsky, Hochwarter & Ammeter¡]2002¡^. We use the Hierarchical Linear Modeling to verify the relationship between the personal and job/work environment factors and POP. The personal factors include positive and negative affectivities, and job/work environment factors include accountability and feedback. The results showed a significant relationship between the affectivities of employees and POP. The positive affectivity was in a negative correlation with the POP while the positive affectivity was in a positive correlation. The job/work environment had a good relationship with POP as well. The job feedback showed a negative correlation POP while job accountability showed a positive correlation. However, the current study showed that the relationship between employees' affectivity and POP was not influenced by the job feedback and job accountability.

<p>Abstract</p><p>The use of celebrity endorsement strategy is nowadays more frequently used by marketers in order to increase their sales and thereby extend their market shares. Many celebrities are used in various marketing campaigns and in most cases; the use of celebrities as endorsers is seen from mainly positive aspects. This made the authors curious whether the negative aspects, that also exists when using celebrities as endorsers, affects consumers in their purchasing decisions when a celebrity gets associated with negative publicity. Another cause of interest is which factors of a certain celebrity are most important and crucial in consumers’ perceptions, in the case of negative publicity.</p><p>Purpose: The purpose of this thesis is to study which factors consumers find important for a company to consider when a celebrity gets negative publicity, to maintain successful brand recognition.</p><p>Literature review: The use of previous studies within the field of celebrity endorsement clarifies many important aspects when it comes to celebrity endorsement and this chapter is elaborated from 4 different perspectives; Company, Celebrity, Brand and Consumer. Based on previous studies, the authors identified 6 crucial attributes when using celebrities as endorsers and this can also be seen as a pre-study that the research process has been based upon. Furthermore, the 6 attributes are chosen from the three first mentioned perspectives in order to be able to fulfil the purpose. Hence, this thesis is conducted from a consumer’s point of view.</p><p>Method: A quantitative method is used in this thesis since the authors want to base the results on collected data that is expressed in numbers and also to generate a general apprehension in this phenomenon. Moreover, the combinations containing the 6 attributes are used in the conjoint experiment.</p><p>Conclusions: It was proven in this study that consumers do get affected by celebrities as endorser, when the attributes from the literature review are in a combination. But, the consumers’ perception of the attributes differs in different cases. However, the main finding was that there are two crucial attributes, trustworthiness and expertise that companies should take into account when using celebrities in their advertising campaign.</p>

Zugl.: Freiburg, Br., Univ., Diss., 2007

Thesis (Ph. D.)--University of Hong Kong, 2010. / Includes bibliographical references (leaves 126-136). Also available in print.

The research presented in this thesis focuses on the modeling, design, and experimentation of systems containing negative stiffness mechanisms for both vibration and shock isolation. The negative stiffness element studied in this research is an axially compressed beam. If a beam is axially compressed past a critical value, it becomes bistable with a region of negative stiffness in the transverse direction. By constraining a buckled beam in its metastable position through attaching a stiff linear spring in mechanical parallel, the resulting system can reach a low level of dynamic stiffness and therefore provide vibration isolation at low frequencies, while also maintaining a high load-carrying capacity. In previous research, a system containing an axially compressed beam was modeled and tested for vibration isolation [7]. In the current research, variations of this model were studied and tested for both vibration and shock isolation. Furthermore, the mathematical model used to represent the compressed beam in [7] was improved and expanded in current research. Specifically, the behavior exhibited by buckled beams of transitioning into higher-mode shapes when placed under transverse displacement was incorporated into the model of the beam. The piecewise, nonlinear transverse behavior exhibited by a first-mode buckled beam with a higher-mode transition provides the ability of a system to mimic an ideal constant-force shock isolator. Prototypes manufactured through Selective Laser Sintering were dynamically tested using a shaker table. Vibration testing confirmed the ability of a system containing a constrained negative stiffness element to provide enhanced vibration isolation results with increasing axial compression on a beam. However, the results were limited by the high sensitivity of buckled beam behavior to geometrical and boundary condition imperfections. Shock testing confirmed the ability of a system containing a buckled beam with a higher-mode transition to mimic the theoretically ideal constant-force shock isolator. / text

This work demonstrates the effectiveness of coextrusion as a method to manufacture negative stiffness inclusions for use in vibrational damping applications. The theory and mechanics of negative stiffness and coextrusion are introduced and the process of creating and extruding a feed rod with negative stiffness architecture explained. Coextrusion is shown to be a viable method to create negative stiffness inclusions / text

Improving throughput in the B. Tech. Nursing Sciences programme is a complex issue as not only the theoretical but also the practical component and undefined inner strengths of the student influence success. The purpose of this article is to report factors in the prospective students’ social background, their perceptions of nursing and nurses and their motivation that could influence their academic success in the first year of study. The research design was contextual, qualitative and exploratory. Triangulation of data gathering methods was obtained by using two instruments, a targeted selection interview and a written instrument. Data analysis was done through Tesch’s approach. The results indicate that prospective students perceive a nurse to be functioning from the affective domain, and that they judge themselves to be strong in the affective domain. The cognitive domain was rarely mentioned (7%). Due to the myths regarding the nursing profession, the profession continue to attract students who are interested in the myth and not the reality.

The hallmark of Gram-negative bacteria is the presence of an outer membrane (OM) surrounding the cytoplasmic membrane (here called the inner membrane [IM]) and the cell wall. The OM is a unique asymmetric bilayer with an inner leaflet consisting of phospholipid and an outer leaflet consisting of lipopolysaccharide (LPS). LPS is a large anionic molecule that typically contains six fatty acyl chains and up to several hundred sugar residues. This chemical structure explains why the OM is relatively impermeable to large hydrophobic molecules, such as detergents, bile salts, and high molecular weight antibiotics, which readily cross a normal phospholipid bilayer. LPS and the OM are essential to the viability of most Gram-negative organisms, including major human pathogens. LPS molecules are biosynthesized at the IM and subsequently exported out of the IM, across the intermembrane space (the periplasm) and through the OM to their final position at the cell surface. In Escherichia coli, the essential LPS transport proteins, LptA-G, are required for this process. This Lpt pathway includes an IM adenosine triphosphate binding cassette (ABC) transporter, LptBFG, which is associated with an additional IM protein, LptC; a periplasmic protein, LptA; and an OM complex consisting of the lipoprotein LptE and the transmembrane \(\beta\)-barrel protein LptD. All seven Lpt proteins associate as a single complex that spans the cell envelope. However, little is known about how these proteins work together to transport LPS. Here, we use in vivo and in vitro biochemical studies to probe the organization, function, and assembly of the Lpt machine. In Chapter 2, we show that LptE forms a plug within the LptD \(\beta\)-barrel and present a model for how this unusual structure can move LPS from the periplasm directly into the outer leaflet of the OM. In Chapter 3, we demonstrate that the Lpt transenvelope bridge consists of a series of structurally homologous domains – LptC, LptA, and the N-terminal domain of LptD – stacked in a head-to-tail orientation, providing a route for LPS from the IM to the OM. Finally, in Chapter 4, we connect these two sets of results by showing how the assembly of the Lpt transenvelope bridge is regulated by that of the LptD/E complex in the OM. Together, these findings explain how the functions of the Lpt proteins are coordinated to ensure delivery of LPS to the correct cellular compartment. A fundamental understanding of LPS biogenesis will contribute to the development of new therapies against Gram-negative infections.