Cluster Analysis of Paleofecal Data Sets: A Test of Late Prehistoric Settlement and Subsistence Patterns in the Northern Coachella Valley, California

1998 ◽  
Vol 63 (1) ◽  
pp. 86-107 ◽  
Author(s):  
Mark Q. Sutton
Keyword(s):  
Cluster Analysis ◽  
Health Technology ◽  
Data Sets ◽  
Late Prehistoric ◽  
Ancient Lake ◽  
Coachella Valley ◽  
Late Prehistoric Period ◽  
Northern Shore ◽  
And Behavior ◽  
Lake Cahuilla

Data from human paleofecal samples can be used to address a variety of questions, primarily the reconstruction of diet, but also the analysis of nutrition, health, technology, and behavior Statistical analyses of constituents can be used to broaden the potential of paleofecal data, as well as to detail cuisine and to address larger issues of settlement/subsistence models. This potential is illustrated with a cluster analysis of paleofecal constituents from three late prehistoric period sites along the northern shore of ancient Lake Cahuilla, located in the Coachella Valley of southern California. These data were used to test competing settlement/subsistence models: one of large permanent lakeside villages dependent on lacustrine resources, and the other of seasonal, rather than permanent, lakeshore occupation. In addition, the analysis revealed additional details of diet and cuisine in the late prehistoric period.

The “Ancient Stone Fish Traps” of the Coachella Valley, Southern California

1945 ◽  
Vol 10 (3) ◽  
pp. 285-294 ◽  
Author(s):  
Adan E. Treganza
Keyword(s):  
High Water ◽  
Salton Sea ◽  
Ancient Lake ◽  
The West ◽  
Coachella Valley ◽  
Riverside County ◽  
Fish Traps ◽  
Small Stone ◽  
Talus Slope ◽  
Lake Cahuilla

A group of small stone enclosures, supposed by some to be of natural origin and by others to be the works of man, lies on a rocky travertine-encrtfsted talus slope at the base of the Santa Rosa Mountains on the west side of the Coachella Valley in Riverside County, California. These phenomena are known locally as the "Ancient Fish Traps." They occupy a series of rocky terraces some 90 feet below the maximum high-water shore line of Ancient Lake Cahuilla (called by some Blake Sea), whose basin is now partly occupied by the Salton Sea. The “traps” consist of 85 to 100 bowl-like depressions composed of a travertine-encrusted granite talus debris. They are arranged in three rows, each of which follows the exact contour of one of the old recessional terraces of the lake (Pl. XIX).

Examining Lithic Technological Organization as a Dynamic Cultural Subsystem: The Advantages of an Explicitly Spatial Approach

1993 ◽  
Vol 58 (3) ◽  
pp. 444-461 ◽  
Author(s):  
Robert A. Ricklis ◽  
Kim A. Cox
Keyword(s):  
Gulf Coast ◽  
Lithic Technology ◽  
Data Sets ◽  
Late Prehistoric ◽  
Lithic Technological Organization ◽  
Spatial Approach ◽  
Technological Efficiency ◽  
Late Prehistoric Period ◽  
Biotic Resource

The organization of hunter—gatherer lithic technology is examined as a dynamic process, with reference to a case study from the Late Prehistoric period of the Texas central Gulf Coast. Several lithic data sets from sites of the Rockport phase (ca. A.D. 1200—1700) indicate that three modes of behavior operated to maintain technological efficiency, and that each was adopted in response to inefficiency thresholds associated with increasing, distance-related costs in the procurement and transport of lithic material. In combination with information on the settlement and subsistence patterns, it is apparent that the organization of lithic technology was adjusted to the more basic needs for biotic-resource procurement. As a result, lithic efficiency was not a constant, but fluctuated within a dynamic cultural subsystem that articulated with the scheduling demands of overall adaptive behavior.

Cluster analysis for large data sets: applications to individual aerosol particles from the mid-pacific

1992 ◽  
Vol 50 (2) ◽  
pp. 1488-1489
Author(s):  
Thomas W. Shattuck ◽  
James R. Anderson ◽  
Neil W. Tindale ◽  
Peter R. Buseck
Keyword(s):  
Cluster Analysis ◽  
Chemical Reactivity ◽  
Large Data ◽  
Large Data Sets ◽  
Particle Analysis ◽  
Data Sets ◽  
Halogen Chemistry ◽  
Complete Study ◽  
Components Analysis ◽  
Automated Scanning

Individual particle analysis involves the study of tens of thousands of particles using automated scanning electron microscopy and elemental analysis by energy-dispersive, x-ray emission spectroscopy (EDS). EDS produces large data sets that must be analyzed using multi-variate statistical techniques. A complete study uses cluster analysis, discriminant analysis, and factor or principal components analysis (PCA). The three techniques are used in the study of particles sampled during the FeLine cruise to the mid-Pacific ocean in the summer of 1990. The mid-Pacific aerosol provides information on long range particle transport, iron deposition, sea salt ageing, and halogen chemistry.Aerosol particle data sets suffer from a number of difficulties for pattern recognition using cluster analysis. There is a great disparity in the number of observations per cluster and the range of the variables in each cluster. The variables are not normally distributed, they are subject to considerable experimental error, and many values are zero, because of finite detection limits. Many of the clusters show considerable overlap, because of natural variability, agglomeration, and chemical reactivity.

Application of multivariable statistical techniques in plant-wide WWTP control strategies analysis

2007 ◽  
Vol 56 (6) ◽  
pp. 75-83 ◽  
Author(s):  
X. Flores ◽  
J. Comas ◽  
I.R. Roda ◽  
L. Jiménez ◽  
K.V. Gernaey
Keyword(s):  
Cluster Analysis ◽  
Control Strategies ◽  
Treatment Plant ◽  
Principal Component ◽  
Statistical Techniques ◽  
Data Sets ◽  
Data Set ◽  
Casual Relation ◽  
Evaluation Matrix ◽  
Natural Groups

The main objective of this paper is to present the application of selected multivariable statistical techniques in plant-wide wastewater treatment plant (WWTP) control strategies analysis. In this study, cluster analysis (CA), principal component analysis/factor analysis (PCA/FA) and discriminant analysis (DA) are applied to the evaluation matrix data set obtained by simulation of several control strategies applied to the plant-wide IWA Benchmark Simulation Model No 2 (BSM2). These techniques allow i) to determine natural groups or clusters of control strategies with a similar behaviour, ii) to find and interpret hidden, complex and casual relation features in the data set and iii) to identify important discriminant variables within the groups found by the cluster analysis. This study illustrates the usefulness of multivariable statistical techniques for both analysis and interpretation of the complex multicriteria data sets and allows an improved use of information for effective evaluation of control strategies.

scholarly journals Measuring the Morphology and Dynamics of the Snake River by Remote Sensing

2011 ◽  
Vol 33 ◽  
pp. 3-15
Author(s):  
Carl Legleiter
Keyword(s):  
Remote Sensing ◽  
Image Data ◽  
River System ◽  
Field Work ◽  
Hyperspectral Data ◽  
Snake River ◽  
Central Component ◽  
Data Sets ◽  
Channel Form ◽  
And Behavior

The Snake River is a central component of Grand Teton National Park, and this dynamic fluvial system plays a key role in shaping the landscape and creating diverse aquatic and terrestrial habitat. The river’s complexity and propensity for change make effective characterization of this resource difficult, however, and conventional, ground-based methods are simply inadequate. Remote sensing provides an appealing alternative approach that could facilitate resource management while providing novel insight on the factors controlling channel form and behavior. In this study, we evaluate the potential to measure the morphology and dynamics of a large, complex river system such as the Snake using optical image data. Initially, we made use of existing, publicly available images and basic digital aerial photography acquired in August 2010. Analysis to date has focused on estimating flow depths from these data, and preliminary results indicate that remote bathymetric mapping is feasible but not highly accurate, with important constraints related to the limited radiometric resolution of these data sets. Additional, more sophisticated hyperspectral data are scheduled for collection in 2011, along with further field work.

scholarly journals Ceramic Types from Late Prehistoric Sites along the East Fork of the Trinity River

2015 ◽  
Author(s):  
Wilson Crook ◽  
Mark Houghston
Keyword(s):  
Direct Evidence ◽  
Red River ◽  
Late Prehistoric ◽  
East Texas ◽  
Ceramic Assemblage ◽  
Trinity River ◽  
Late Prehistoric Period ◽  
Prehistoric Culture ◽  
The Trinity

Ceramics are one of the key diagnostic artifacts that define the Late Prehistoric culture of the peoples that lived along the East Fork of the Trinity and its tributaries. We are completing a 42 year re evaluation of the Late Prehistoric period of the area and have st udied nearly 32,000 artifacts, of which over 10,200 are ceramic sherds. From this study, 20 distinct ceramic types have been recognized. Plain ware, both shell tempered and sandy paste/grog tempered, are the predominant ceramic types present, comprising ov er 90 percent of the total ceramic assemblage. While there is little direct evidence for indigenous manufacture, the abundance of these types suggests they were produced locally. Lesser quantities of decorated ware of distinct Caddo ceramic types from the Red River and East Texas suggest they are likely the product of exchange. There is also a small amount of Puebloan material indicative of a longer distance exchange.

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