This thesis began with the goal of designing a bold house cantilevered over the edge of a cliff 120 feet above the water, and evolved into the study of how to design when starting with the primary form of a cube. The cube was chosen as representing the crystalline form of the rock upon which the house sits. The outside shell of the house is horizontal, board formed concrete, also in reference to the layered rock of the cliff face. There are two primary forces cutting away the mass of the cube to produce the final form of the house. The first force is of the site, and is generated by two spectacular views. These two views are used to cut through the house, forming an â Xâ shaped atrium eight feet wide and four storeys high, in the center of the house. The second force is generated by the desire to bring daylight into two opposite corners of the house. The southern corner of the house faces the lake. The bottom of that corner is cut out more than the top to admit direct sun in the winter, indirect sun in the summer, and reflected sun off the lake year round. The northern corner of the house faces the woods. The top of that corner is cut out more than the bottom to allow northern light into the top floors and maintain privacy on the lower floor, where the driveway approaches the house. / Master of Architecture

Coastal cliff erosion is a widespread problem that threatens property and infrastructure along many of the world’s coastlines. The management of this risk calls for robust quantification of cliff erosion rates, which are often difficult to obtain along rocky coasts. Quantification of sea-cliff rates of retreat on annual to decadal time scales has typically been limited to rapidly eroding soft rock coastlines. Rates of erosion used for shoreline management in the UK are generally based on analysis of historic maps and aerial photographs which, in rocky coast environments, does not wholly capture the detail and timing at which the processes operate and the failures occur across the cliff face. The first stage of this study uses airborne LiDAR (Light Detection and Ranging) data at nine sites around a rocky coastline (Cornwall, UK) to gain a quantitative understanding of cliff erosion where average recession rates are relatively low (c. 0.1 m yr-1). It was found that three-dimensional volumetric changes on the cliff face and linear rates of retreat can be reliably calculated from consecutive digital elevation models (DEMs) several years apart. Rates of erosion ranged between 0.03–0.3 m yr-1. The spatial variability in recession rates was considered in terms of the relationship with the varying boundary conditions (rock mass characteristics, cliff geometries, beach morphology) and forcing parameters (wave climate and wave exposure). Recession rates were statistically correlated with significant wave height (Hs), rock mass characteristics (GSI) and the ratio between the two (GSI/Hs). Although the rates derived using airborne LiDAR are comparable to the longer term rates of retreat, the detail of erosion to the cliff-face provides additional insight into the processes occurring in slowly eroding environments, which are vital for understanding the failure of harder rock coastlines. In addition to this, the importance of the wave climate and rainfall needs further attention on a more localised scale. Monthly cliff face volume changes, at two particularly vulnerable sites (Porthleven and Godrevy, Cornwall, UK), were detected using a Terrestrial Laser Scanner (TLS). Using these volumes alongside information on beach profile, beach- cliff junction elevation changes and nearshore hydrodynamics have allowed an insight into how the cliffs respond to seasonal fluctuations in wave climate and beach morphology. Monthly variability in beach morphology between the two sites over a one-year survey period i  indicated the influence that beach slope and the elevation of the beach-cliff junction have on the frequency of inundation and the power of wave-cliff impacts. Failure mechanisms between the two sites ranged from rotational sliding of superficial material to quarrying and block removal over the entire cliff elevation, according to the extent of wave-cliff interaction. This particular survey period highlighted the sensitivity of cliff erosion to the variability in wave climate and beach morphology at two different locations in the south-west of the UK, where the vast majority (over 85% of the annual value) of cliff face erosion occurs during the winter when extreme storm waves prevail. Coastal cliff erosion from storm waves is observed worldwide but the processes are notoriously difficult to measure during extreme storm wave conditions when most erosion normally occurs, limiting our understanding of cliff processes. Over January-March 2014, during the largest Atlantic storms in at least 60 years with deep water significant wave heights of 6 – 8 m, cliff-top ground motions of a rocky cliff in the south-west of the UK (Porthleven, Cornwall) showed vertical ground displacements in excess of 50–100 μm; an order of magnitude larger than observations made previously. Repeat terrestrial laser scanner surveys, over a 2-week period encompassing the extreme storms, gave a cliff face volume loss 2 orders of magnitude larger than the long-term erosion rate. Cliff-top ground motions and erosion volumes were compared at two different locations, one a reflective beach with steeply shelving bathymetry (Porthleven, Cornwall) and the other an intermediate, low tide bar-rip beach with a wide coastal slope (Godrevy, Cornwall). Under similar wave conditions (6–8 m Hs and 15–20 s. Tp) the vertical ground motions were an order of magnitude greater at the cliffs fronted by steeply shelving bathymetry, where the breaking waves plunge right at the shoreline, with little prior dissipation, leading to large energetic runup impacting the cliff. These storm results imply that erosion of coastal cliffs exposed to extreme storm waves is highly episodic and that long-term rates of cliff erosion will depend on the frequency and severity of extreme storm wave impacts as well as the wave dissipation that occurs as a function of the nearshore bathymetry. Having recorded microseismic cliff-top motion on this scale for the first time and determined an effective method of monitoring the energetic wave impacts, this study emphasises how investigations of cliff behaviour during storms is not only obtainable, but paramount to understanding coastal evolution under extreme conditions.

Bakgrund: Kvinnors representation i styrelsen har varit en aktuell fråga som länge diskuterats i det svenska samhället och om det borde införas en kvoteringslag. Sverige är ett av de mest jämställda länder Europa, trots det finns markanta gap i kvinnors representation bland de ledande positionerna. Glass cliff-fenomenet antyder att kvinnor anlitas till ledarskapspositioner i osäkra förhållanden, vilket kan förklara den underrepresentation som existerar hos styrelsen. Vi frågar oss själva om glass cliff-fenomenet kan appliceras på kvinnliga ledamöter i den svenska kontexten. Syfte: Studiens syfte är att undersöka om ett glass cliff-fenomen existerar bland bolag noterade på OMX Stockholm inom small, mid och large-cap kategorin. Metod: Longitudinell studie med en deduktiv ansats där teorin testas mot studiens hypotesprövning. Urvalet består av 86 förlustföretag noterade på Stockholmsbörsen mellan år 2010 och 2018. Slutsats: Från resultatet fann vi att det inte existerade ett glass cliff-fenomen bland de svenska börsbolagen på small, mid och large-cap kategorin.

No description available.

No description available.

Bedrock features represent various economic, social, and symbolic aspects of past societies, but have historically received little study, particularly in North America. Fortunately, new techniques for analyzing spatial configurations, use-wear, and organic residues are beginning to unlock more of the interpretive potential of these features. Though preliminary in nature, the present study contributes to this trend by documenting an application of lipid analysis to bedrock features in a dry rockshelter. Results of this initial application indicate that bedrock features in dry rockshelters may provide especially favorable conditions for the preservation and interpretation of ancient organic residues. Abundant lipids, comparable to concentrations present in some pottery sherds, were extracted from a bedrock grinding surface at Gila Cliff Dwellings National Monument and analyzed using gas chromatography-mass spectrometry. Though the lipids were highly oxidized, degradation products indicative of former unsaturated fatty acids were retained. Comparisons to experimentally aged residues, and absence of a known biomarker for maize, indicate that the bulk of the lipids preserved in the milling surface probably derive from processing an oily nut or seed resource, and not from processing maize. Substantially lower amounts of lipids were recovered from a small, blackened cupule. It is hypothesized that some portion of the lipids in the blackened cupule was deposited from condensed smoke of cooking and heating fires in the caves. Potential for the preservation of organic residues in similar sheltered bedrock contexts is discussed, and a practical method for sampling bedrock features in the field is described.

Thesis advisor: Gilda Morelli / Although trying to survive on a low income is challenging for all individuals, the experience of losing government supports can propel households into a crisis situation which may cause them to act or react in distinctive ways. This study used a survey of 78 low-income women followed by in-depth interviews with 18 of these women to explore how two groups of women--those close to losing government supports (i.e., within three months) and those further from losing government supports (i.e., experienced at least one year ago)--plan for and cope with financially vulnerable periods in their lives and how they fare as a result. There are two parts to this research. First, information on government support use, social support, proactive coping, and overall well-being were gathered using survey techniques. Linear regression and mediation analyses were conducted to further explore the association between these constructs. Proactive coping was found to be a significant predictor of well-being (R2=.305, &#946;=.552, p<.01), but social support did not mediate this relation. Findings from the survey also demonstrated the women in the near loss group scored higher on proactive coping and well-being measures, and the far from loss group scored higher on measures of social support. Second, a sub-sample of the survey participants were chosen for an in-depth interview based on when they lost (or were anticipating to lose) government supports. This sub-sample was invited to discuss their resource loss experience, how they planned for and coped with this loss, and what role other factors such as social support, consideration of future consequences, choice deferral, and perceived transaction costs played in this process and what it meant for their well-being. The conversations with the women revealed that the group near a loss situation deferred decisions less frequently and had shorter planning horizons focusing more on the immediate (and less on the future) consequences of their decisions. While the far from loss group discussed, with less urgency, their plans as being distant and spoke of their more extensive social support networks. Both groups discussed similar sentiments of shame, degradation, and inconvenience associated with their experiences at the welfare office, and although the cost of this transaction outweighed the benefit for the women in the far from loss group, the near loss participants chose to endure it to receive the assistance. This research demonstrated that individuals who face government support loss because of an increase in income and who proactively plan make better strides towards becoming economically self-sufficient and investing in the health and well-being of their families now and in the future. This, in turn, may continue to encourage and promote the ability to act in proactive ways and may lead to greater overall well-being. / Thesis (PhD) — Boston College, 2009. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Psychology.

Gender diversity within the boardroom is an important theme in the research of corporate governance. The lack of female directors during recent years have raised attention where the prejudice against women have been a central theme. Especially, in a gender egalitarian country as Sweden. The purpose of the study is to examine the relationship between female directors and financial performance, but also the presence of the “glass cliff” theory. The study is based on companies listed on Large Cap in Sweden, where data are collected from annual reports and a database. The collected data are analyzed by several statistical methods. The findings show that female directors do have a positive impact on a company’s financial performance, in terms of accounting-based measurements. However, the market-based measurement does not a provide a significant relationship to female directors, indicating that the Swedish stock market does neither positively or negatively react to a more gender diverse board. As no differences in performance are seen preceding the appointments of females compared to males, no evidence for the “glass cliff” is found. The findings suggest that female directors may enhance the performance of a company and disproves the prejudice against women. Further, the findings indicate that the Swedish boards are becoming more diverse, where precarious situations are not the reason for women to be appointed to the board.

The consequences of mine seismicity can be mitigated by installing support systems capable of absorbing the energy generated by seismic events. Recent work has focused on the testing of individual support or reinforcement units under laboratory impact loads; this, however, does not render itself to easy extrapolation to field conditions. Hence, this thesis focuses on improving the understanding of the performance of support systems in real-world applications through passive monitoring of past rockburst events. 14 years of rockburst history were collected from Coleman Mine and Copper Cliff Mine, two of Vale’s underground (nickel) operations in Sudbury Ontario. Statistical analysis, principal component analysis (PCA) and partial least square projection (PLS) were utilized to find relation between collected parameters and performance capacity. This thesis discusses the adequacy of various support systems and investigates the validity of perceived support performance as compared to the actual performance based on analyses of field data.

The consequences of mine seismicity can be mitigated by installing support systems capable of absorbing the energy generated by seismic events. Recent work has focused on the testing of individual support or reinforcement units under laboratory impact loads; this, however, does not render itself to easy extrapolation to field conditions. Hence, this thesis focuses on improving the understanding of the performance of support systems in real-world applications through passive monitoring of past rockburst events. 14 years of rockburst history were collected from Coleman Mine and Copper Cliff Mine, two of Vale’s underground (nickel) operations in Sudbury Ontario. Statistical analysis, principal component analysis (PCA) and partial least square projection (PLS) were utilized to find relation between collected parameters and performance capacity. This thesis discusses the adequacy of various support systems and investigates the validity of perceived support performance as compared to the actual performance based on analyses of field data.