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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Fabrication of high efficiency CdTe thin film solar cell

Chen, Jian-hong 07 September 2010 (has links)
none
12

Ground maneuver and air interdiction a matter of mutual support at the operational level of war /

Egginton, Jack B. January 1900 (has links)
Thesis--School of Advanced Airpower Studies, Maxwell Air Force Base, Ala., 1992-93. / Title from title screen (viewed Oct. 21, 2003). "August 1994." Includes bibliographical references.
13

Preparing for the long war : transformation of UAVs in future force structure planning for close air support operations /

Sorenson, Daren S. January 2006 (has links)
Thesis (M.S. in Joint Campaign Planning and Strategy)--Joint Forces Staff College, Joint Advanced Warfighting School, 2006. / Vita. "National Defense Univ Norfolk VA"--DTIC cover. "14 April 2006." Includes bibliographical references (p. 58-61). Also available via the Internet.
14

Preparing for the long war transformation of UAVs in future force structure planning for close air support operations /

Sorenson, Daren S. January 2006 (has links) (PDF)
Thesis (M.S. in Joint Campaign Planning and Strategy)--Joint Forces Staff College, Joint Advanced Warfighting School, 2006. / "14 April 2006." Electronic version of original print document. Includes bibliographical references (p. 58-61).
15

Vulnerability of Reinforced Concrete Columns to External Blast Loading

Al-Bayti, Abdullah January 2017 (has links)
Reinforced concrete columns are essential elements that are responsible for overall strength and stability of structures. Loss of a column within a frame can cause progressive collapse. While some research has been conducted on blast performance of reinforced columns, primarily under far-field explosions, very limited work exists on the effects of close-in explosions. Dynamic response of concrete columns, in multi storey building, was investigated under close-in blast loads numerically, using FEM software LS-DYNA. A six-storey reinforced concrete building was selected for this purpose. Different standoff distance/charge mass combinations were used to investigate the failure modes of external building columns. Three different charge masses were used; i) backpack bomb having 22.67 kg (50 lbs) of TNT, ii) compact sedan car bomb with 227 kg (500 lbs) of TNT and iii) sedan car bomb with 454 kg (1000 lbs) of TNT. The explosives were placed at different distances relatively close to the structure, triggering different failure modes. Effects of transverse reinforcement and column location (edge versus corner column) were studied under different combinations of charge weight and standoff distance. Column response under dynamic blast load was identified as either local or global. The results show that the failure mode with backpack bombs located at small standoff distance is either local breaching or concrete scabbing. Direct shear failure occurred at column supports when higher charge masses were detonated at close distances. As the standoff distance increased the response changed from breaching or direct shear to diagonal tension and flexure. The column transverse reinforcement played a major role in controlling diagonal shear cracks and promoting flexural response. Hence, the amount and spacing of transverse reinforcement were observed to be important design parameters.
16

Meaning Maintenance in Close Relationships

Van Tongeren, Daryl R. 04 May 2011 (has links)
The human motivation for meaning has been a longstanding topic of inquiry, and recent research has begun to investigate how individuals maintain a sense of meaning in life. Given the importance of social connectedness in human life, as well as the role of relationships in providing a sense of meaningfulness, the present investigation explored meaning maintenance within the domain of close relationships. Specifically, a theoretical model for interpersonal meaning maintenance is presented, which proposes that moral actions—particularly forgiveness—are oriented toward restoring relationship quality, and, in turn, meaning in life, in the wake of interpersonal transgressions. The tenets of this model were tested in two studies. Study 1 provided initial evidence for this model by examining dispositional characteristics that are important for one’s relationship (e.g., trait empathy, self-esteem) and provided promising results that support a more specific investigation within the domain of close relationships. Implementing a longitudinal study design, Study 2 examined interpersonal offenses committed by romantic partners over six months, as well as the degree of forgiveness offered by the hurt partner, and the subsequent effects on relationship quality and meaning in life. The results revealed that, as hypothesized, initial levels of meaning in life predicted committing fewer moral offenses against one’s partner and offering more forgiveness when suffering a transgression by one’s partner. Although transgressing against one’s partner did not reduce meaning in life, offering forgiveness increased meaning in life and life satisfaction over time. In addition, relationship satisfaction partially mediated the effects of forgiveness on meaning in life, and self-esteem was found to moderate this mediating relationship. Support for the model of interpersonal meaning maintenance was garnered in two studies. The present investigation was the first to explore how individuals maintain meaning within the domain of close relationships. Implications for the scientific study of meaning, as well as for applications in relationships, are discussed.
17

Projecto de uma caixa de velocidades close ratio para um automóvel de competição

Gomes, Lisuarte André January 2012 (has links)
Tese de mestrado. Mestrado Integrado em Engenharia Mecânica. Faculdade de Engenharia. Universidade do Porto. 2012
18

The impact of identity and power on marital social support behavior

Hunter-Holmes, Pam 01 November 2005 (has links)
Identity and power are important components of any relationship, especially one as intimate as the connection between marital partners. Social support is expected and elicited within these relationships, however most social support researchers have not incorporated sociological theoretical orientations that would provide insight into the structural components of the relationship and their impact. Using ideas derived from Identity Control Theory and Power Dependence Theory this research investigates the impact of these powerful social factors. Specifically, I hypothesize that marital partners who are similar in their identities will be better able to offer social support in conversations in which those identities are salient. I also hypothesize that partners who are similar in structural power will offer more support than those who are dissimilar.
19

Relationship satisfaction in dating relationships and same-sex friendships: a comparison and integration of Equity Theory and Attachment Theory

Kito, Mie 08 September 2006 (has links)
Past research has found support for Equity Theory and Attachment Theory in predicting relationship satisfaction. According to Equity Theory, individuals feel satisfied when they are engaged in equitable relationships, where the ratio of benefits to costs is the same across partners. On the other hand, Attachment Theory postulates that a secure attachment style predicts high relationship satisfaction. Although an extensive number of studies have supported these predictions, the present study was the first to compare or integrate Equity Theory and Attachment Theory in predicting relationship satisfaction. A total of 384 introductory psychology students completed questionnaires. Simultaneous multiple regression indicated that partner’s input and the avoidance dimension of attachment were the two largest predictors of relationship satisfaction among overall sample. Hypotheses regarding the relation between equity level and attachment styles were only partially supported. In addition, three proposed models for predicting satisfaction were tested. The first model, based on Equity Theory, showed that underbenefiting exchange orientation, communal orientation, and closeness predicted the level of equity, which in turn led to relationship satisfaction. The second model, based on Attachment Theory, indicated that attachment styles affected the level of self-disclosure leading to intimacy and closeness, which predicted satisfaction. The third model integrated the two theories and showed that attachment styles predicted equity, which influenced the level of self-disclosure. Self-disclosure influenced intimacy and closeness, which led to relationship satisfaction. The integrated model best predicted relationship satisfaction among the three proposed models. Finally, sex differences and differences between friendships and dating relationships were also discussed. / October 2005
20

Rain on My Parade: Perceiving Low Self-Esteem in Close Others Hinders Positive Self-Disclosure

MacGregor, Jennifer January 2011 (has links)
Ample evidence suggests that the behaviour of people with low self-esteem (LSEs) can lead to problems in close relationships (Wood, Hogle, & McClellan, 2009). To my knowledge, however, no research has investigated the role that perceptions of close others’ self-esteem play in undermining beneficial relationship processes. In the current paper, I propose that capitalization, a process associated with greater relationship quality (Gable, Reis, Impett, & Asher, 2004), might be hindered by the friends, partners, or family members of LSEs. In studies 1 through 3 I obtain experimental and behavioural evidence that people are reluctant to disclose their positive experiences (i.e., capitalize) when they believe the recipient has low self-esteem. In Study 4, I show the external validity of my findings with couples having real discussions. In Studies 5a and b, I examine mechanism and find that although participants have both self- and other-focused concerns regarding capitalizing with LSEs, their self-focused concerns appear to drive their behaviour. Overall, my research suggests that the perception of others’ self-esteem is a variable that guides behaviour in important social situations.

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