Using Sequential Mixed Social Science Methods to Define and Measure Heritage Conservation Performance

There is no agreed-upon definition for heritage conservation performance, but it is possible to borrow ideas from the natural resource conservation field to inform this concept. Dimensions of performance can include economic, technical, and sociocultural and experiential indices. Because heritage conservation ostensibly benefits people as its primary goal, however, the values of most stakeholders ought to play a role in defining performance. Most of these values are subjective and represent sociocultural and personal meanings and tend to differ dramatically from the positivistic, fabric-centered value system of conservation experts. Measurement implies quantification, yet many sociocultural values are based on qualitative meanings that defy direct attempts at quantification. One solution for this predicament is to employ a sequential mixed-method approach where qualitative meanings are gathered from stakeholders and then these meanings are used to inform the development of a quantitative method, such as a survey instrument. In this way, while the qualitative meanings are not being directly “measured” as such, aspects of the phenomenon behind these meanings can be measured, quantified, and subjected to statistical techniques. A brief representative case study is presented as an example of how social science methodologies can help define and measure performance

Valuing Historic Places: Traditional and Contemporary Approaches

Decisions about which older buildings, structures, and places should be conserved are fundamental to the practice of architectural conservation. Conservation professionals use the interrelated concepts of integrity, authenticity, and historical value to determine which historic places are worthy of importance. Traditionally, these concepts are predicated on preserving the object rather than conserving the meaning and values associated with the object. In other works, the goal is to benefit the object and not the people who value the object. This method, which has roots in antiquated nineteenth-century Western scientific traditions, deprecates the importance of people, processes, and meanings in how places are valued and conserved. Thus, conservation professionals produce “objective” meanings for other conservators, but not for everyday people. The net result is a failure to understand how local populations actually value their historic places. A recent movement in architectural conservation is to emphasize the role of contemporary social, cultural, and personal meanings in valuing historic places and the processes in which places develop these values overtime. This pluralistic perspective recognizes that different populations and cultures will have diverse ways of valuing historic places. Ultimately, for places such as Iraq, we have very little, if any, data to support conservation decisions that understand and respect local cultures and tradition. The danger is in applying traditional, Western, concepts that still dominate the conservation profession to non-Western contexts. There is a tremendous learning opportunity to engage in the cross-pollination of ideas from the perspectives of the Western and Eastern traditions and to learn how the citizens of Iraq value their cultural heritage. This information, once gathered, can then inform how to best approach the conservation of Iraqi urban centers

Probing the Person-Patina Relationship: A Correlational Study on the Psychology of Senescent Environments

This data repository consists of the following documents: - "Wells - Probing the Person-Patina Relationship (pre-print).pdf": Pre-print, working paper of the published journal article. - "Person-patina study - survey responses.csv": raw survey responses - "Person-patina study - survey instrument.pdf": survey instrumentPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.There is a lack of research on people’s psychological perceptions to decay or patina that is part of the historic environment. Built heritage conservation doctrine and law are based on the assumption that all people have a similar, positive aesthetic perception to patina in the built environment, although there are very few empirical studies that have attempted to confirm or challenge this assumption. This study is based on the statistical analysis of survey data from 864 people in the United States who ranked 24 images of old, decayed building materials and 7 control images of new building materials based on aesthetic qualities, condition, and perceived age. The results indicate that people do not like decayed earthen building materials, concrete, or ferrous metals and have a neutral opinion of the aesthetic qualities of aged brick, preferring new brick as well as aged wood. While there are small differences based on race, ethnicity, and gender, the largest difference in responses is between people who work in the historic preservation/CRM field and those who do not. This finding appears to indicate that people who work in these fields have a different psychological response to decay/patina in the built environment than laypeople, which has important ramifications in terms of decision-making processes regarding interventions in the older built environment.Funding for the study came from the School of Architecture, Planning and Preservation at the University of Maryland, College Park.https://doi.org/10.1525/collabra.33

10 Ways Historic Preservation Policy Supports White Supremacy and 10 Ideas to End It

In the United States, policy-driven work in historic preservation comprises about three-quarters of the field’s work. Addressing issues of diversity, inclusion, and equity in federal and local preservation policies has usually been synonymous with the need to recognize the history of people with non-dominant racial or ethnic identities. While this omission is very much a policy problem, it is far from the only manifestation of how preservation policies support White supremacy, especially through the field’s pervasive regulatory climate. To more fully explore the policy problems in the field, this paper attempts to define ten ways in which preservation policy supports White supremacy followed by specific recommendations to solve some of these issues. A central theme is for the National Park Service and the Advisory Council on Historic Preservation to open up and support the rule-making process around the National Register of Historic Places and the Secretary of the Interior’s Standards. A secondary theme is to support people-centered changes to historic preservation policy, including more flexibility around what have often been dogmatic approaches to significance and integrity

Does Intra-Disciplinary Historic Preservation Scholarship Address the Exigent Issues of Practice? Exploring the Character and Impact of Preservation Knowledge Production in Relation to Critical Heritage Studies, Equity, and Social Justice

This data repository consists of the following documents: - "Wells - Intra-Disciplinary Historic Preservation Scholarship - raw citation metrics.xlsx": Raw citation metrics analyzed for this research. - "Wells - Intra-Disciplinary Historic Preservation Scholarship - content analysis.pdf": A detailed content analysis of intra-disciplinary preservation scholarship that was summarized in the published journal article. - "Wells - Intra-Disciplinary Historic Preservation Scholarship -additional tables.pdf": Additional tables on the citation analysis that could not be included in the published journal article. - "Wells - Intra-Disciplinary Historic Preservation Scholarship (pre-print).pdf": Pre-print, working paper of the published journal article.This data repository originates from research that seeks to understand the relationship, in historic preservation, between equity/social justice and the field’s intra-disciplinary scholarship by using a critical heritage studies lens. Intra-disciplinary scholarship is defined as the scholarly literature produced by the 58 tenured and tenure-track faculty associated with historic preservation degree programs in the United States through the end of 2018. A content analysis of this literature shows a general lack of engagement by authors on issues related to the public’s needs, including topics related to justice, equity, diversity, and inclusion. A citation analysis of this literature reveals meager faculty productivity and low impact for intra-disciplinary preservation scholarship. In order for the field to sustain itself, it needs to reconsider its anti-intellectual tendencies, increase its socially-relevant scholarly publications, and embrace more critical, people-centered approaches

The Effect of Soluble Uterine Factors on Porcine Embryo Development Within a Three-Dimensional Alginate Matrix System

Between day 10 and 12 of gestation in the pig, the embryo undergoes a dramatic morphological change, known as elongation. During elongation the embryo produces and secretes estrogen, which serves as a key signal for maternal recognition of pregnancy. The uterine environment prepares for embryo elongation and implantation by releasing nutrients, metabolites, and hormones in a time-dependent manner relative to paracrine signals from the conceptus (i.e., estrogen) and endocrine/paracrine signals within the endometrium (i.e., progesterone). Despite advances in identification of specific uterine factors present throughout pregnancy in the pig, little is known about the exact mechanisms by which porcine embryos elongate normally, or how this elongation is altered during embryonic loss. Previously, our laboratory has established an in vitro culture system using alginate hydrogels as a three-dimensional (3-D) matrix to support the development of pre-implantation porcine embryos in base serum media without the addition of hormones. The objective of the current study was to improve our 3-D system and determine if uterine flushes from day 9 or 10 of gestation were capable of supporting in vitro embryonic development of in vivo-developed day 9 porcine embryos using the 3- D alginate culture system. Embryos collected on day 9 of gestation were assigned to be cultured in pooled day 9 flushes, day 10 flushes, or base serum media for five days within 0.7% alginate gels. Our results demonstrate that uterine flushes from day 9 or 10 of gestation supported embryonic development in our 3-D hydrogel system, similar to that from embryos cultured in base serum media. These results illustrate that soluble factors present in uterine flushings at day 9 or 10 of gestation support in vitro embryonic development within our 3-D alginate culture system. Developing better scientific understanding of the factors that regulate embryo elongation and early embryonic mortality can be useful for developing strategies to improve sow productivity and increase the profitability of swine production

Small-Scale Spray Releases: Initial Aerosol Test Results

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are scarce. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine aerosol release fractions and generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of anti-foam agents was assessed with most of the simulants. Orifices included round holes and rectangular slots. The round holes ranged in size from 0.2 to 4.46 mm. The slots ranged from (width × length) 0.3 × 5 to 2.74 × 76.2 mm. Most slots were oriented longitudinally along the pipe, but some were oriented circumferentially. In addition, a limited number of multi-hole test pieces were tested in an attempt to assess the impact of a more complex breach. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the large size of some of the WTP equipment. This report presents the experimental results and analyses for the aerosol measurements obtained in the small-scale test stand. It includes a description of the simulants used and their properties, equipment and operations, data analysis methodologies, and test results. The results of tests investigating the role of slurry particles in plugging small breaches are reported in Mahoney et al. (2012). The results of the aerosol measurements in the large-scale test stand are reported in Schonewill et al. (2012) along with an analysis of the combined results from both test scales

A pair of temperate sub-Neptunes transiting the star EPIC 212737443

We report the validation of a new planetary system around the K3 star EPIC 212737443 using a combination of K2 photometry, follow-up high resolution imaging and spectroscopy. The system consists of two sub-Neptune sized transiting planets with radii of 2.6R⊕, and 2.7R⊕, with orbital periods of 13.6 days and 65.5 days, equilibrium temperatures of 536 K and 316 K respectively. In the context of validated K2 systems, the outer planet has the longest precisely measured orbital period, as well as the lowest equilibrium temperature for a planet orbiting a star of spectral type earlier than M. The two planets in this system have a mutual Hill radius of ΔRH = 36, larger than most other known transiting multi-planet systems, suggesting the existence of another (possibly non-transiting) planet, or that the system is not maximally packed