An Exploration of Quaker Women’s Writing Between 1650 and 1700

Throughout the tumultuous period that was the English Civil War, there was a great change in society’s values and beliefs resulting in the establishment of many new political and religious groups. Quakerism, established in the 1640’s, appealed to women as it gave them freedom to prophesy and to proclaim the gospel. This study explores the role of Quaker women’s writing specifically between the years 1650 and 1700, a period of increased religious prominence. Texts from this time are examined including the journal and the epistle to the prophetic tract. The presence of women as preachers and missionaries is explored in a time of civic and political unrest, illustrating how Quakerism gave women the opportunity for religious freedom and expression through writing

Glass in the submarine section of the HSDP2 drill core, Hilo, Hawaii

The Hawaii Scientific Drilling Project recovered ~3 km of basalt by coring into the flank of Mauna Kea volcano at Hilo, Hawaii. Rocks recovered from deeper than ~1 km were deposited below sea level and contain considerable fresh glass. We report electron microprobe analyses of 531 glasses from the submarine section of the core, providing a high-resolution record of petrogenesis over ca. 200 Kyr of shield building of a Hawaiian volcano. Nearly all the submarine glasses are tholeiitic. SiO2 contents span a significant range but are bimodally distributed, leading to the identification of low-SiO2 and high-SiO2 magma series that encompass most samples. The two groups are also generally distinguishable using other major and minor elements and certain isotopic and incompatible trace element ratios. On the basis of distributions of high- and low-SiO2 glasses, the submarine section of the core is divided into four zones. In zone 1 (1079–~1950 mbsl), most samples are degassed high-SiO2 hyaloclastites and massive lavas, but there are narrow intervals of low-SiO2 hyaloclastites. Zone 2 (~1950–2233 mbsl), a zone of degassed pillows and hyaloclastites, displays a continuous decrease in silica content from bottom to top. In zone 3 (2233–2481 mbsl), nearly all samples are undegassed low-SiO2 pillows. In zone 4 (2481–3098 mbsl), samples are mostly high-SiO2 undegassed pillows and degassed hyaloclastites. This zone also contains most of the intrusive units in the core, all of which are undegassed and most of which are low-SiO2. Phase equilibrium data suggest that parental magmas of the low-SiO2 suite could be produced by partial melting of fertile peridotite at 30–40 kbar. Although the high-SiO2 parents could have equilibrated with harzburgite at 15–20 kbar, they could have been produced neither simply by higher degrees of melting of the sources of the low-SiO2 parents nor by mixing of known dacitic melts of pyroxenite/eclogite with the low-SiO2 parents. Our hypothesis for the relationship between these magma types is that as the low-SiO2 magmas ascended from their sources, they interacted chemically and thermally with overlying peridotites, resulting in dissolution of orthopyroxene and clinopyroxene and precipitation of olivine, thereby generating high-SiO2 magmas. There are glasses with CaO, Al2O3, and SiO2 contents slightly elevated relative to most low-SiO2 samples; we suggest that these differences reflect involvement of pyroxene-rich lithologies in the petrogenesis of the CaO-Al2O3-enriched glasses. There is also a small group of low-SiO2 glasses distinguished by elevated K2O and CaO contents; the sources of these samples may have been enriched in slab-derived fluid/melts. Low-SiO2 glasses from the top of zone 3 (2233–2280 mbsl) are more alkaline, more fractionated, and incompatible-element-enriched relative to other glasses from zone 3. This excursion at the top of zone 3, which is abruptly overlain by more silica-rich tholeiitic magmas, is reminiscent of the end of Mauna Kea shield building higher in the core

Student and Instructor Perceptions of the Use of Online Translators in English Composition

Given recent calls for university composition policies that are informed by the actual practices and populations of students at a given institution (Tardy, 2011), this study investigated student and instructor perceptions and attitudes toward using online translators (e.g., Google Translate or Babelfish) for composition assignments. The study analyzed interview data from four international students and three English composition instructors to understand how the use of online translators was explained, justified, and contextualized by these two groups. This study revealed that although both students and instructors believed that online translators afforded an opportunity for language learning, the participants still aligned with dominant ideologies of plagiarism and were wary of the use of these services. In conclusion to the study, recommendations were made for instructors to moderate more in-class discussions about the use of technology during the writing process and to define the appropriate and inappropriate uses of such technology more clearly

Student and Instructor Perceptions of the Use of Online Translators in English Composition

Given recent calls for university composition policies that are informed by the actual practices and populations of students at a given institution (Tardy, 2011), this study investigated student and instructor perceptions and attitudes toward using online translators (e.g., Google Translate or Babelfish) for composition assignments. The study analyzed interview data from four international students and three English composition instructors to understand how the use of online translators was explained, justified, and contextualized by these two groups. This study revealed that although both students and instructors believed that online translators afforded an opportunity for language learning, the participants still aligned with dominant ideologies of plagiarism and were wary of the use of these services. In conclusion to the study, recommendations were made for instructors to moderate more in-class discussions about the use of technology during the writing process and to define the appropriate and inappropriate uses of such technology more clearly

Volatiles in glasses from the HSDP2 drill core

H2O, CO2, S, Cl, and F concentrations are reported for 556 glasses from the submarine section of the 1999 phase of HSDP drilling in Hilo, Hawaii, providing a high-resolution record of magmatic volatiles over ~200 kyr of a Hawaiian volcano's lifetime. Glasses range from undegassed to having lost significant volatiles at near-atmospheric pressure. Nearly all hyaloclastite glasses are degassed, compatible with formation from subaerial lavas that fragmented on entering the ocean and were transported by gravity flows down the volcano flank. Most pillows are undegassed, indicating submarine eruption. The shallowest pillows and most massive lavas are degassed, suggesting formation by subaerial flows that penetrated the shoreline and flowed some distance under water. Some pillow rim glasses have H2O and S contents indicating degassing but elevated CO2 contents that correlate with depth in the core; these tend to be more fractionated and could have formed by mixing of degassed, fractionated magmas with undegassed magmas during magma chamber overturn or by resorption of rising CO2-rich bubbles by degassed magmas. Intrusive glasses are undegassed and have CO2 contents similar to adjacent pillows, indicating intrusion shallow in the volcanic edifice. Cl correlates weakly with H2O and S, suggesting loss during low-pressure degassing, although most samples appear contaminated by seawater-derived components. F behaves as an involatile incompatible element. Fractionation trends were modeled using MELTS. Degassed glasses require fractionation at pH2O ≈ 5–10 bars. Undegassed low-SiO2 glasses require fractionation at pH2O ≈ 50 bars. Undegassed and partially degassed high-SiO2 glasses can be modeled by coupled crystallization and degassing. Eruption depths of undegassed pillows can be calculated from their volatile contents assuming vapor saturation. The amount of subsidence can be determined from the difference between this depth and the sample's depth in the core. Assuming subsidence at 2.5 mm/y, the amount of subsidence suggests ages of ~500 ka for samples from the lower 750 m of the core, consistent with radiometric ages. H2O contents of undegassed low-SiO2 HSDP2 glasses are systematically higher than those of high-SiO2 glasses, and their H2O/K2O and H2O/Ce ratios are higher than typical tholeiitic pillow rim glasses from Hawaiian volcanoes

Powder Compaction Simulation

Powders are one of most manipulated materials in many industries such as food, pharmaceutical, energy and metallurgical industries. An important process for the powders is the compaction into solids with small porosity or high relative density. However, powders exhibit complex behavior during this process. After rearrangement and jamming of the powder bed, many types of deformation mechanisms dominate the compaction of granular materials, including elastic and plastic deformation of each individual particle. Therefore, having a better understanding of macroscale and microscale properties of powder beds and single particles during the compaction process is necessary. In addition, to reduce cost and time for experimental efforts, it is important to have modeling and simulation capabilities for the powder compaction process. This study creates a new version of an existing powder compaction simulation nanoHUB tool. This version includes more features, such as single elastic and plastic particle deformation and microstructure evolution during the compaction of plastic powder beds. Using the solver developed by Dr. Marcial Gonzalez [1, 2], this nanoHUB tool is able to simulate binary mixtures of monodispersed systems of both plastic and elastic particles. Also, it generates the pressure-deformation relationship for a single particle when it is compressed between rigid plates. [1] Gonzalez M. and Cuitiño, A.M., “A nonlocal contact formulation for confined granular systems”, Journal of the Mechanics and Physics of Solids, 60, 333–350, 2012. [2] Gonzalez M. and Cuitiño A.M., “Microstructure evolution of compressible granular system

Spatio-temporal judgements of observed actions : Contrasts between first- and third-person perspective after motor priming.

When observing actions, motor simulation processes aid the prediction and understanding of future events. A central issue concerns whether such action simulation serves social functions of interpreting other people, where performance is predicted to be better when third-person perspective (3PP) actions are viewed; or whether it is most beneficial to guide self actions, whereby the first-person perspective (1PP) would be advantageous. We show that in a spatio-temporal judgement task there is an advantage for the prediction of 1PP. However, this is only detected after motor priming whereby participants perform the observed actions prior to making spatio-temporal judgements. The results, firstly, confirm that we draw on our motor experience for the accurate simulation and prediction of action. Secondly, the results suggest that such experience facilitates more accurate state estimation for actions perceived in the 1PP which map more closely onto visual input of self-generated action. More forward prediction error is retained for 3PP viewed actions, which may however have the benefit of compensating for the uncertainty involved in interacting with others