Solar System Observations with the James Webb Space Telescope

The James Webb Space Telescope will enable a wealth of new scientific investigations in the near- and mid-infrared, with sensitivity and spatial/spectral resolution greatly surpassing its predecessors. In this paper, we focus upon Solar System science facilitated by JWST, discussing the most current information available concerning JWST instrument properties and observing techniques relevant to planetary science. We also present numerous example observing scenarios for a wide variety of Solar System targets to illustrate the potential of JWST science to the Solar System community. This paper updates and supersedes the Solar System white paper published by the JWST Project in 2010 (Lunine et al., 2010). It is based both on that paper and on a workshop held at the annual meeting of the Division for Planetary Sciences in Reno, NV in 2012.Comment: 52 pages (with figures), 32 figures; More information about JWST Solar System observations is available at http://www.stsci.edu/jwst/science/solar-syste

The Caves and Karst of Rota Island, Commonwealth of the Northern Mariana Islands

Rota Island, the southernmost island in the Commonwealth of the Northern Mariana Islands in the western Pacific, has the types of caves previously documented on the other limestone mantled islands in the Mariana Arc that have been investigated for caves: Aguijan, Guam, Tinian and Saipan. Caves developed at the edge of the fresh-water lens by zones of enhanced carbonate dissolution produced by fresh-water/salt-water mixing are most common. Among these mixing zone caves, flank margin caves dominate. Flank margin caves were found singly and in extensive horizons representing significant sea-level still stands. However, another type of mixing zone cave was found on Rota in numbers not documented on neighboring islands. Mixing zone fracture caves, apparently formed as zones of enhanced dissolution, produced fresh-water discharging from the lens along fractures, migrated vertically as sea-level changed. Some mixing zone fracture caves on Rota are developed in clusters from two to four caves. The mixing zone caves of Rota reflect the interaction of eogenetic limestone, glacioeustasy, local tectonics and enhanced carbonate dissolution via mixing of disparate waters. The development of mixing zone caves on Rota is in agreement with the Carbonate Island Karst Model (CIKM). Rota has a few caves developed along the contact between limestone and the insoluble volcanic rock that makes up the core of the island. The most important of these is Water Cave, a large spring that is the source for most of the municipal water on Rota. Rota also two extensive zones of vertical fissures developed along bedrock fractures; Fissure City and As Mundo Fissure Zone. In addition, Rota has one cave apparently developed along a fault; Gagani Cave. Some of the caves documented on Rota are difficult to classify and warrant further investigation

The postmaster's porcelain : collecting European decorative art in middle America

Field of study: Art history and archaeology.Dr. Michael Yonan, Dissertation Supervisor.Includes vita."July 2018.""This dissertation provides a case study of a type of art collecting that has not received significant scholarly attention, one based on the collecting activity of middleclass Americans living in the Midwestern United States, but who nonetheless are interested in the appeal of European "high" art. I intend to show that collecting and the appreciation of art are not limited to those with the financial acumen of a Rockefeller, Guggenheim, or Saatchi. The following analysis centers on Philip and Mildred Strain, a postmaster and schoolteacher, and the obstacles they overcame to amass a collection that reflected their interest in eighteenth-century European aesthetics. Typically, collectors attract the attention of scholars when they have access to art and artists that become revered enough to be placed in the art historical canon. Access to the work of those artists necessitates the ability to connect with dealers, as well as the artists themselves, in global cultural centers like Paris, New York City, or London. In 1958, Aline B. Saarinen published a book titled The Proud Possessors, which is composed of fifteen biographical sketches of American art collectors. It established a canon of American collectors on which the scholarship of collecting is based. Saarinen, an art critic for The New York Times, narrates the lives of men who built the physical, economic, and political infrastructure of the United States, women whose names now adorn major American museums, and the world travelers who brought the work of modern artists like Picasso and Matisse to America. Saarinen writes that “the overpowering common denominator” that unites these collectors is that "collecting art was a primary means of expression" and that their "involvement with art collecting was passionate and urgent." Saarinen's comments about the motives of the socially prominent collectors, whose financial resources and connections allowed them access to the international art market, can also be applied to Mr. and Mrs. Strain. The Strains also used their collection to express an identity of their own making. However, the Strains could be categorized as "outsider collectors," a term that echoes the concept of the outsider artist, a recognized genre in the art-historical canon. Outsider artists operate separately from mainstream art establishments; they are often self-trained and labor for years in obscurity before being discovered by a dealer, curator, or scholar. The Strains built their store of connoisseurial knowledge through secondary sources such as auction catalogs and collecting guides. Their close relationship with Jack Drew, an art and antiques dealer in Omaha, mimicked the relationships between the canonical collectors and dealers, galleries, and auction houses with Drew serving as a consultant facilitating access to the art and antiques markets of metropolitan cultural centers. The Strains lacked the financial and social resources of Saarinen's canon of collectors, but they shared a passion that motivated their appreciation of the art to which they were most attracted. I approach the Strains' collecting activities as Saarinen approached wealthy collectors. This dissertation will examine the Strains' biography to locate the origin of their interest in the art they collected. It includes a detailed documentation of the methods they used to display their collection in their home, since that environment no longer exists. Their collection has been dispersed and their residence remodeled for future inhabitants. My discussion relies on interviews with individuals who knew the Strains in order to understand how they lived with their collection. My analysis provides another chapter to the story of art collectors in America, expanding our understanding of the human impulse to express ourselves through the objects we possess."--PrefaceIncludes bibliographical references

SSERVI Annual Report: Year 4

The SSERVI Central Office forms the organizational, administrative and collaborative hub for the domestic and international teams, and is responsible for advocacy and ensuring the long-term health and relevance of the Institute. SSERVI has increased the cross-talk between NASAs space and human exploration programs, which is one of our primary goals. We bring multidisciplinary teams together to address fundamental and strategic questions pertinent to future human space exploration, and the results from that research are the primary products of the institute. The team and international partnership reports contain summaries of 2017 research accomplishments. Here we present the 2017 accomplishments by the SSERVI Central Office that focus on: 1) Supporting Our Teams, 2) Community Building, 3) Managing the Solar System Treks Portal (SSTP), and 4) Public Engagement

Earth resources: A continuing bibliography with indexes (issue 61)

This bibliography lists 606 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1 and March 31, 1989. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, oceanography and marine resources, hydrology and water management, data processing and distribution systems, and instrumentation and sensors, and economic analysis

A comparison of statistical machine learning methods in heartbeat detection and classification

In health care, patients with heart problems require quick responsiveness in a clinical setting or in the operating theatre. Towards that end, automated classification of heartbeats is vital as some heartbeat irregularities are time consuming to detect. Therefore, analysis of electro-cardiogram (ECG) signals is an active area of research. The methods proposed in the literature depend on the structure of a heartbeat cycle. In this paper, we use interval and amplitude based features together with a few samples from the ECG signal as a feature vector. We studied a variety of classification algorithms focused especially on a type of arrhythmia known as the ventricular ectopic fibrillation (VEB). We compare the performance of the classifiers against algorithms proposed in the literature and make recommendations regarding features, sampling rate, and choice of the classifier to apply in a real-time clinical setting. The extensive study is based on the MIT-BIH arrhythmia database. Our main contribution is the evaluation of existing classifiers over a range sampling rates, recommendation of a detection methodology to employ in a practical setting, and extend the notion of a mixture of experts to a larger class of algorithms