November 14th, 2014 by MVH
Hamel, D. R., Shalm, L. K., Hubel, H., Miller, A. J., Marsili, F., Verma, V. B., et al. (2014). Direct generation of three-photon polarization entanglement. Nature Photonics, 8(10).
Abstract: Non-classical states of light are of fundamental importance for emerging quantum technologies. All optics experiments producing multi-qubit entangled states have until now relied on outcome post-selection, a procedure where only the measurement results corresponding to the desired state are considered. This method severely limits the usefulness of the resulting entangled states. Here, we show the direct production of polarization-entangled photon triplets by cascading two entangled downconversion processes. Detecting the triplets with high-efficiency superconducting nanowire single-photon detectors allows us to fully characterize them through quantum state tomography. We use our three-photon entangled state to demonstrate the ability to herald Bell states, a task that was not possible with previous three-photon states, and test local realism by violating the Mermin and Svetlichny inequalities. These results represent a significant breakthrough for entangled multi-photon state production by eliminating the constraints of outcome post-selection, providing a novel resource for optical quantum information processing.
November 6th, 2014 by MVH
Hagerman, C. A. (2014). Weapons: Catapult Bolts, Arrowheads, Javelin and Spear Heads, and Sling Bullets. In G. P. Schaus (Ed.), Stymphalos : the acropolis sanctuary. Volume 1 (pp. 79-102). Toronto: University of Toronto Press.
Abstract: The buildings and artefacts uncovered by Canadian excavations at Stymphalos (1994–2001) shed light on the history and cult of a small sanctuary on the acropolis of the ancient city. The thirteen detailed studies collected in Stymphalos: The Acropolis Sanctuary illuminate a variety of aspects of the site. Epigraphical evidence confirms that both Athena and Eileithyia, goddess of childbirth, were worshipped in the sanctuary between the fourth and second centuries BCE. The temple and service buildings are modest in size and materials, but the temple floor and pillar shrine suggest that certain stones and bedrock outcrops were held as sacred objects. Earrings, finger rings, and other jewelry, along with almost 100 loomweights, indicate that women were prominent in cult observances. Many iron projectile points (arrowheads and catapult bolts) suggest that the sanctuary was destroyed in a violent attack around the mid-second century, possibly by the Romans. A modest sanctuary in a modest Arcadian city-state, the acropolis sanctuary at Stymphalos will be a major point of reference for all archaeologists and historians studying ancient Arcadia and all southern Greece in the future.
October 30th, 2014 by MVH
Antibus, J. V., Panter, K. S., Wilch, T. I., Dunbar, N., McIntosh, W., Tripati, A., et al. (2014). Alteration of volcaniclastic deposits at Minna Bluff: Geochemical insights on mineralizing environment and climate during the Late Miocene in Antarctica. Geochemistry Geophysics Geosystems, 15(8), 3258-3280.
Abstract: Secondary minerals in volcaniclastic deposits at Minna Bluff, a 45 km long peninsula in the Ross Sea, are used to infer processes of alteration and environmental conditions in the Late Miocene. Glassy volcaniclastic deposits are altered and contain phillipsite and chabazite, low to high-Mg carbonates, chalcedony, and clay. The δ18O of carbonates and chalcedony is variable, ranging from −0.50 to 21.53‰ and 0.68 to 10.37‰, respectively, and δD for chalcedony is light (−187.8 to −220.6‰), corresponding to Antarctic meteoric water. A mean carbonate 87Sr/86Sr ratio of 0.70327 ± 0.0009 (1σ, n = 12) is comparable to lava and suggests freshwater, as opposed to seawater, caused the alteration. Minerals were precipitated at elevated temperatures (91 and 104°C) based on quartz-calcite equilibrium, carbonate 13C-18C thermometry (Δ47 derived temperature = 5° to 43°C) and stability of zeolites in geothermal systems (>10 to ∼100°C). The alteration was a result of isolated, ephemeral events involving the exchange between heated meteoric water and glass during or soon after the formation of each deposit. Near-surface evaporative distillation can explain 18O-enriched compositions for some Mg-rich carbonates and chalcedony. The δ18Owater calculated for carbonates (−15.8 to −22.9‰) reveals a broad change, becoming heavier between ∼12 and ∼7 Ma, consistent with a warming climate. These findings are independently corroborated by the interpretation of Late Miocene sedimentary sequences recovered from nearby sediment cores. However, in contrast to a cold-based thermal regime proposed for ice flow at core sites, wet-based conditions prevailed at Minna Bluff; a likely consequence of high heat flow associated with an active magma system.
October 24th, 2014 by MVH
Rabquer, B. J., & Koch, A. E. (2014). Rheumatoid arthritis: Microvascular clues to hemiplegia-induced asymmetric RA. Nature Reviews Rheumatology, advance online publication.
Abstract: Patients with rheumatoid arthritis who are hemiplegic, and also mice with denervated hindpaws and experimentally-induced arthritis, can develop unilateral arthritis. But is a specific branch of the nervous system involved in this asymmetry, or does a lack of innervation alter the microvasculature and promote vascular impermeability?
October 23rd, 2014 by MVH
Kish-Gephart, J., Detert, J., Treviño, L., Baker, V., & Martin, S. (2014). Situational Moral Disengagement: Can the Effects of Self-Interest be Mitigated? Journal of Business Ethics, 125(2), 267-285.
Abstract: Self-interest has long been recognized as a powerful human motive. Yet, much remains to be understood about the thinking behind self-interested pursuits. Drawing from multiple literatures, we propose that situations high in opportunity for self-interested gain trigger a type of moral cognition called moral disengagement that allows the individual to more easily disengage internalized moral standards. We also theorize two countervailing forces—situational harm to others and dispositional conscientiousness—that may weaken the effects of personal gain on morally disengaged reasoning. We test our hypotheses in two studies using qualitative and quantitative data and complementary research methods and design. We demonstrate that when personal gain incentives are relatively moderate, reminders of harm to others can reduce the likelihood that employees will morally disengage. Furthermore, when strong personal gain incentives are present in a situation, highly conscientious individuals are less apt than their counterparts to engage in morally disengaged reasoning.
October 23rd, 2014 by MVH
Deutsch, G. (2014). Little guy (Short story). Confrontation, 115, 39-56.
October 16th, 2014 by MVH
Alozie, N., & Mitchell, C. (2014). Getting Students Talking: Supporting Classroom Discussion Practices in Inquiry-Based Science in Real-Time Teaching. The American Biology Teacher, 76(8), 501-506.
Abstract: Why is it so hard to get students talking in science class? Who is responsible? Are the students unwilling to speak in class? What kinds of supports are helpful for in-the-moment teaching during classroom discussions in science? We present one high school teacher’s facilitation of science discussions while supported by a dialogic discussion structure that was collaboratively developed through professional-development workshops. Our findings provide a real-time teaching tool for teachers working toward integrating inquiry-based science discussions in their classrooms.
October 13th, 2014 by MVH
Bollman, M. (2014). Basic gambling mathematics : the numbers behind the neon. Boca Raton, FL: CRC Press.
“Basic Gambling Mathematics: The Numbers Behind the Neon explains the mathematics involved in analyzing games of chance, including casino games, horse racing, and lotteries. The book helps readers understand the mathematical reasons why some gambling games are better for the player than others. Along with discussing the mathematics of well-known casino games, the author examines game variations that have been proposed or used in actual casinos. Numerous examples illustrate the mathematical ideas in a range of casino games while end-of-chapter exercises go beyond routine calculations to give readers hands-on experience with casino-related computations. The book begins with a brief historical introduction and mathematical preliminaries before developing the essential results and applications of elementary probability, including the important idea of mathematical expectation. The author then addresses probability questions arising from a variety of games, including roulette, craps, baccarat, blackjack, Caribbean stud poker, Royal Roulette, and sic bo. The final chapter explores the mathematics behind “get rich quick” schemes, such as the martingale and the Iron Cross, and shows how simple mathematics uncovers the flaws in these systems.” (Publisher’s description)
October 1st, 2014 by MVH
Mittag, D. M. (2014). A Meno Problem for Evidentialism. Southern Journal of Philosophy, 52(2), 250-266.
Abstract: The original Meno problem is to explain why knowledge is more valuable than mere true belief. In this paper I argue that evidentialists face an additional Meno problem, a Meno problem that, to date, no evidentialist has considered. Specifically, evidentialists must account for the additional epistemic value of a doxastically justified doxastic attitude as compared to a doxastic attitude that is merely propositionally justified. I consider the nature of the problem facing evidentialism and critically discuss two attempts to account for this additional epistemic value. Then, I highlight the remaining options and present the alternative I favor. According to this alternative, while the nature of doxastic justification is analyzed in terms of propositional justification, the value of doxastic justification is not. Holding a doxastic attitude on the basis of propositionally justifying evidence is a fundamental epistemic good. In virtue of this, doxastically justified doxastic attitudes have fundamental epistemic value.
October 1st, 2014 by MVH
Christensen, N. A. (2014). Facing the Weather in James Galvin’s The Meadow and Cormac McCarthy’s The Road. Isle-Interdisciplinary Studies in Literature and Environment, 21(1), 192-204.
This is an essay about the weather and the power of the imagination. What I have to say is as much for people outside of the academy as it is for those of us within it. In the academy, and even within the circles of environmental literary criticism, it might seem romantic or naïve or old fashioned to suggest that the imaginative potency of literature can change values and behavior. But that is precisely what I believe—that reading literature can alter the way we imagine ourselves and our relationship with the weather. And now, more than ever, we find ourselves in need of it.
August 4th, 2014 by MVH
Majure, L. C., Judd, W. S., Ionta, G. M., Skean, J. D., Becquer, E. R., & Neubig, K. M. (2014). Miconia cineana (Melastomataceae: Miconieae), a New Species from the Massif de la Hotte, Haiti, Based on Morphological and Molecular Evidence. Systematic Botany, 39(3), 906-914.
Abstract: We describe a new species, Miconia cineana (Melastomataceae: Miconieae), from the Massif de la Hotte, Haiti. Although this species has been known from sterile collections since the early 1980s, its phylogenetic position was unknown, although it was presumed to be closely related to species of Pachyanthus s. 1. The phylogenetic reconstruction presented here, based on a recent collection of the species, clearly places M. cineana in a clade comprised of Cuban species of the polyphyletic genera Tetrazygia s. I. and Pachyanthus s. 1. Thus, M. cineana represents the sole Hispaniolan member of an otherwise Cuban clade, and an uncommon biogeographic pattern in melastomes. Miconia cineana, although described here from sterile specimens, is easily distinguished from the other species of this clade using vegetative morphology, as well as phylogenetic placement. This study highlights the utility of molecular data when coupled with morphology, allowing for the discovery of an unrecognized species in a region of high diversity and endemism, i.e. the Massif de la Hotte.
July 23rd, 2014 by MVH
Chase, B., Meiggs, D., Ajithprasad, P., & Slater, P. A. (2014). Pastoral land-use of the Indus Civilization in Gujarat: faunal analyses and biogenic isotopes at Bagasra. Journal of Archaeological Science, 50, 1-15.
Abstract: The Indus Civilization (2600–1900 BC) in Gujarat is characterized by a series of small yet monumentally walled settlements located along trade and travel corridors. The manufacture and use of typically Harappan material culture at these settlements demonstrates that many residents of these sites participated in exchange and interaction networks that linked them to distant Indus cities. Less is known, however, regarding the ways in which the residents of these sites were situated into their local landscapes. Here we combine previously published faunal analyses from the small walled settlement of Bagasra in the Indian state of Gujarat, with a preliminary investigation of intra- and inter-individual variation in the ratios of biogenic isotopes of strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) in the tooth enamel of domestic animals consumed at the site. 87Sr/86Sr ratios in the teeth of sheep and goats exhibit little intra- or inter-individual variation suggesting that most were raised locally while greater inter-individual variation in the teeth of cattle suggesting that nearly half of these animals were either raised further afield or were supplied with fodder raised elsewhere. δ13C values from these same samples in the teeth of sheep and goats exhibit considerable intra-individual variation suggesting of a seasonally variable diet incorporating significant wild forage while uniformly higher values in the teeth of cattle suggest that they consumed mostly agricultural produce throughout the year. δ18O values in the teeth of both sets of domestic livestock exhibit considerable intra-individual variation commensurate with the seasonal variation in temperature and rainfall characteristic of the region while variation between taxa is consistent with observed dietary differences. Taken together, our findings provide new information regarding the ways in which the domestic animals consumed at Bagasra were raised and obtained while establishing an empirical baseline necessary for further exploration of the land-use changes that may have accompanied the emergence and decline of South Asia’s first urban civilization.
July 23rd, 2014 by MVH
Reimann, D. A. (2013). Symmetric interlace patterns on polyhedra using generalized truchet tiles. Symmetry: Culture and Science, 24(1-4), 185-190.
July 23rd, 2014 by MVH
McCauley, A. (Artist). (2014). “Passage 13″. Drawing. Exhibited at: 5th Annual Exhibition of Contemporary Drawing, University of North Carolina, Asheville, January 17-March 17, 2014.
July 23rd, 2014 by MVH
Pifer, M. J., & Baker, V. L. (2014). “It could be just because I’m different”: Otherness and its outcomes in doctoral education. Journal of Diversity in Higher Education, 7(1), 14-30.
Abstract: For students who view themselves as different from the majority and those in positions of influence, doctoral education may present challenges beyond the typical pressures and stresses of the graduate student experience. In this article, we report findings from a qualitative study of otherness as described by 31 full-time doctoral students in two academic departments within one university. We explore identity-based otherness and its related outcomes for students and the academy. Findings from our analysis of interview data indicate that doctoral students experience otherness across a diverse range of characteristics related to professional, relational, and personal components of their identities. Findings also indicate that experiences of otherness may prevent students from viewing themselves as accepted and supported members of departmental, disciplinary, and professional communities. We conclude with implications for research and practice.
July 21st, 2014 by MVH
Chase, B., Ajithprasad, P., Rajesh, S. V., Patel, A., & Sharma, B. (2014). Materializing Harappan identities: Unity and diversity in the borderlands of the Indus Civilization. Journal of Anthropological Archaeology, 35, 63-78.
Abstract: The widespread distribution of Harappan material culture throughout a vast expanse of northwestern South Asia is a defining characteristic of the Indus Civilization (2600–1900 BC). The social dynamics responsible for this material pattern, however, are not fully understood. While top-down perspectives on interregional interaction explain some aspects of the material record in the Indian state of Gujarat, they do not explain the material diversity that we observe at Indus settlements in Gujarat. Here, we undertake a bottom-up exploration of Harappan material culture at two small, recently excavated Indus settlements in Gujarat. Our findings show that although the residents of both sites participated in the interregional economy and publically displayed a common Harappan identity, there is evidence for considerable variation in the domestic practices characteristic of each site. We interpret these to suggest that the residents of these sites were integrated into the wider Indus Civilization by way of inclusionary ideologies that served to unify socially diverse borderland communities. These findings and interpretations regarding the role of material culture in the mediation of local social dynamics in the Indus borderlands contribute to a more complete understanding of South Asia’s first urban society while offering methodological and theoretical perspectives that further the exploration of these issues in early complex societies more generally.
July 15th, 2014 by MVH
Sakulthaew, C., Comfort, S., Chokejaroenrat, C., Harris, C., & Li, X. (2014). A combined chemical and biological approach to transforming and mineralizing PAHs in runoff water. Chemosphere, 117, 1-9.
Abstract: The water quality of lakes, rivers and streams associated with metropolitan areas is declining from increased inputs of urban runoff that contain polycyclic aromatic hydrocarbons (PAHs). Our objective was to transform and mineralize PAHs in runoff using a combined chemical and biological approach. Using 14C-labeled phenanthrene, 14C-benzo(a)pyrene and a mixture of 16 PAHs, we found that ozone transformed all PAHs in a H2O matrix within minutes but complete mineralization to CO2 took several weeks. When urban runoff water (7.6 mg C L−1) replaced H2O as the background matrix, some delays in degradation rates were observed but transforming a mixture of PAHs was still complete within 10 min. Comparing the biodegradability of the ozonated products to the parent structures in unsaturated soil microcosms showed that the 3-ring phenanthrene was more biodegradable (as evidence by 14CO2 released) than its ozonated products but for the 5-ring benzo(a)pyrene, the products produced by ozone were much more biodegradable (22% vs. 3% mineralized). For phenanthrene, we identified diphenaldehyde as the initial degradation product produced from ozonation. By continuing to pump the ozonated products (14C-labeled diphenaldehyde or ozone-treated benzo(a)pyrene) onto glass beads coated with microorganisms, we verified that biological mineralization could be achieved in a flow-through system and mineralization rates improved with acclimation of the microbial population (i.e., time and exposure to the substrate). These results support a combined ozone and biological approach to treating PAHs in urban runoff water.
July 10th, 2014 by MVH
Linich, C., & Parr, C. (2014). Okro mch’edelo (O Goldsmith). In C. Parr (Ed.): Earthsongs.
Description: This piece is an equal-voiced setting, with the narrow ranges of each part typical of many Georgian folk songs. It can be sung in the written key nicely by middle school-age or older mixed groups, or women’s groups with some older women who are comfortable with the occasional G below middle C in the bani (bass) part. For a TTB setting, transpose down a major third or fourth. It could be transposed up a step or so for use with young children, but singing the piece any higher than that will change the desired traditional folk tone quality of the sound. Any kind of octave doubling, either above or below, is not characteristic of the Georgian folk tradition and is not recommended.
May 15th, 2014 by MVH
Harnish, A. (2014). Extractive workload: a mixed-method approach for investigating the socially differentiated effects of land-use/land-cover changes in a southern Zambian frontier. Population and Environment, 35(4), 455-476.
Abstract: In rural regions across the globe, local natural resources (i.e., “bush” resources) are central to meeting daily household needs. Culturally-influenced gender- and age-based divisions of labor guide the harvesting of these resources and, as a result, shifts in resource availability will differentially affect women, men, girls, and boys. This research brief presents results of an innovative pilot project designed to assess the socially differentiated effects of land-use/land-cover changes (LULCC) on Gwembe Tonga migrants living in Kulaale, an agricultural frontier in southern Zambia. Integrating existing analyses of remotely sensed imagery with a seasonal resource survey and mapping exercise (n = 20 homesteads), this study finds the average extractive workloads (mean annual distance traveled for the collection of bush resources) of women, men, girls, and boys to be both unequal and contrary to recent speculations about the distinctive vulnerability of adult women to environmental change. Drawing on qualitative ethnographic methods—including semi-structured interviews (n = 101), a homestead labor survey (n = 38), participant observation, and references to over fifty years of anthropological research—the author identifies additional variables—including the demographic structure of Kulaale homesteads and the flexible division of subsistence labor—that color Gwembe Tonga migrants’ aged and gendered experiences of LULCC. The study adds important nuance to our understanding of natural resource practices and individual-level vulnerability, particularly in the face of contemporary environmental change.
May 13th, 2014 by MVH
Fogle, M., Wulf, D., Morgan, K., McCammon, D., Seely, D. G., Draganić, I. N., et al. (2014). X-ray-emission measurements following charge exchange between C6+ and H2. Physical Review A, 89(4), 042705.
Abstract: Lyman x-ray spectra following charge exchange between C6+ and H2 are presented for collision velocities between 400 and 2300 km/s (1–30 keV/amu). Spectra were measured by a microcalorimeter x-ray detector capable of fully resolving the C vi Lyman series emission lines though Lyman-δ . The ratios of the measured emission lines are sensitive to the angular momentum l states populated during charge exchange and are used to gauge the effectiveness of different l-distribution models in predicting Lyman emission due to charge exchange. At low velocities, we observe that both single-electron-capture and double-electron-capture autoionization contribute to Lyman emission and that a statistical l distribution best describes the measured line ratios. At higher velocities single-electron capture dominates with the l distribution peaked at the maximum l.
May 7th, 2014 by MVH
Myers, P. (2013). The Ambivalence of a Spiritual Quest in India: Waldemar Bonsels’ Indienfahrt. In V. Fuechtner & M. Rhiel (Eds.), Imagining Germany, Imagining Asia : Essays in Asian-German Studies (pp. 131-154). Rochester, N.Y.: Camden House.
May 7th, 2014 by MVH
Shaffer, C. D., Alvarez, C. J., Bednarski, A. E., Dunbar, D., Goodman, A. L., Reinke, C., Saville, K., et al. (2014). A Course-Based Research Experience: How Benefits Change with Increased Investment in Instructional Time. CBE-Life Sciences Education, 13(1), 111-130.
Abstract: There is widespread agreement that science, technology, engineering, and mathematics programs should provide undergraduates with research experience. Practical issues and limited resources, however, make this a challenge. We have developed a bioinformatics project that provides a course-based research experience for students at a diverse group of schools and offers the opportunity to tailor this experience to local curriculum and institution-specific student needs. We assessed both attitude and knowledge gains, looking for insights into how students respond given this wide range of curricular and institutional variables. While different approaches all appear to result in learning gains, we find that a significant investment of course time is required to enable students to show gains commensurate to a summer research experience. An alumni survey revealed that time spent on a research project is also a significant factor in the value former students assign to the experience one or more years later. We conclude: 1) implementation of a bioinformatics project within the biology curriculum provides a mechanism for successfully engaging large numbers of students in undergraduate research; 2) benefits to students are achievable at a wide variety of academic institutions; and 3) successful implementation of course-based research experiences requires significant investment of instructional time for students to gain full benefit.