Were Bifaces used as Mobile Cores by Clovis Foragers in the North American Lower Great Lakes Region? An Archaeological Test of Experimentally Derived Quantitative Predictions

2013 ◽  
Vol 78 (1) ◽  
pp. 166-180 ◽  
Author(s):  
Metin I. Eren ◽  
Brian N. Andrews
Keyword(s):  
Great Lakes ◽  
Positive Relationship ◽  
Negative Relationship ◽  
Great Lakes Region ◽  
Flake Thickness ◽  
The North ◽  
Strong Positive Relationship ◽  
The Mean ◽  
Experimental Replication ◽  
Mitigating Behavior

AbstractThe notion that Paleoindians used bifaces as “mobile cores” is widespread in Late Pleistocene lithic research, although it can be difficult to test empirically. Here, we use experimental replication to establish two quantitative predictions that would be indicative of biface-core transport. If bifaces are being used as mobile cores, then we should see among a group of sites of varying toolstone procurement distances (a) a negative relationship between toolstone procurement distance and the mean unifacial tool maximum-thickness value from each site; and (b) a negative relationship between toolstone procurement distance and the variability (standard deviation) of maximum flake thickness values from each site. We then test these predictions against data from six Clovis sites of varying toolstone procurement distance in the Lower Great Lakes region. The results show that both sets of data possess a strong, positive relationship with increasing toolstone procurement distance, which is inconsistent with the notion that biface-cores were transported. Since the Clovis presence in the Lower Great Lakes is widely acknowledged to be a colonization pulse, we conclude that the lack of biface-core transport there is an economizing and risk-mitigating behavior consistent with the models of Kuhn (1994) and Meltzer (2002, 2003, 2004).

INTERCONNECTION OF SUSTAINABLE DEVELOPMENT COMPONENTS FOR THE INDIGENOUS PEOPLES OF THE NORTH

2020 ◽  
Vol 2 (8) ◽  
pp. 101-110
Author(s):  
N. N. ILYSHEVA ◽  
◽  
E. V. KARANINA ◽  
G. P. LEDKOV ◽  
E. V. BALDESKU ◽  
...  
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
Economic Development ◽  
Indigenous Peoples ◽  
Ecological Footprint ◽  
Positive Relationship ◽  
The North ◽  
Strong Positive Relationship ◽  
The Face ◽  
The Relationship

The article deals with the problem of achieving sustainable development. The purpose of this study is to reveal the relationship between the components of sustainable development, taking into account the involvement of indigenous peoples in nature conservation. Climate change makes achieving sustainable development more difficult. Indigenous peoples are the first to feel the effects of climate change and play an important role in the environmental monitoring of their places of residence. The natural environment is the basis of life for indigenous peoples, and biological resources are the main source of food security. In the future, the importance of bioresources will increase, which is why economic development cannot be considered independently. It is assumed that the components of resilience are interrelated and influence each other. To identify this relationship, a model for the correlation of sustainable development components was developed. The model is based on the methods of correlation analysis and allows to determine the tightness of the relationship between economic development and its ecological footprint in the face of climate change. The correlation model was tested on the statistical materials of state reports on the environmental situation in the Khanty-Mansiysk Autonomous Okrug – Yugra. The approbation revealed a strong positive relationship between two components of sustainable development of the region: economy and ecology.

scholarly journals Effects of freshwater blue spaces may be beneficial for mental health: A first, ecological study in the North American Great Lakes region

PLoS ONE ◽  
2019 ◽  
Vol 14 (8) ◽  
pp. e0221977 ◽  
Author(s):  
Amber L. Pearson ◽  
Ashton Shortridge ◽  
Paul L. Delamater ◽  
Teresa H. Horton ◽  
Kyla Dahlin ◽  
...  
Keyword(s):  
Mental Health ◽  
Great Lakes ◽  
North American ◽  
Ecological Study ◽  
Great Lakes Region ◽  
The North ◽  
North American Great Lakes

Antecedents of Online Game Dependency

2010 ◽  
Vol 21 (2) ◽  
pp. 69-99 ◽  
Author(s):  
Kaunchin Chen ◽  
Jengchung V. Chen ◽  
William H. Ross
Keyword(s):  
Predictive Models ◽  
Positive Relationship ◽  
Aesthetic Experience ◽  
Negative Relationship ◽  
Virtual Community ◽  
Online Games ◽  
Online Game ◽  
Massively Multiplayer Online Game ◽  
Mediating Factors ◽  
Strong Positive Relationship

Massively Multiplayer Online Game (MMOG) dependency has been widely studied but research results suggest inconclusive antecedent causes. This study proposes and empirically tests three predictive models of MMOG dependency using a survey of online gaming participants. It finds multimedia realism for social interaction serves as an original antecedent factor affecting other mediating factors to cause MMOG dependency. These mediating factors derive from Uses and Gratifications theory and include: (1) participation in a virtual community, (2) diversion from everyday life, and (3) a pleasant aesthetic experience. Of these, participation in a virtual community has a strong positive relationship with MMOG dependency, and aesthetics has a modest negative relationship. Moderator analyses suggest neither gender nor “frequency of game playing” are significant but experience playing online games is a significant moderating factor of MMOG dependency.

scholarly journals Five-Minute Awake Snoring Test for Determining CPAP Pressures (Five-Minute CPAP Test): A Pilot Study

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Macario Camacho ◽  
Chad M. Ruoff ◽  
Makoto Kawai ◽  
Rahul Modi ◽  
Jabri Arbee ◽  
...  
Keyword(s):  
Pilot Study ◽  
Positive Relationship ◽  
Water Pressure ◽  
Negative Relationship ◽  
Case Series ◽  
Apnea Hypopnea Index ◽  
Nasal Cpap ◽  
Strong Positive Relationship ◽  
Bedside Test ◽  
Obstructive Sleep

Objective. To develop a quick, simple, bedside test for determining continuous positive airway pressures (CPAP) for obstructive sleep apnea (OSA) patients.Study Design. Prospective case series at a tertiary medical center.Methods. The Five-Minute Awake Snoring Test for Determining CPAP (Five-Minute CPAP Test) was developed and tested. Patients wear a soft-gel nasal triangle mask while holding a tongue depressor with the wide section (1.75 cm) between the teeth. Fixed pressure nasal CPAP is applied while the patient simulates snoring at 4 centimeters of water pressure. The pressure is incrementally titrated up and then down to determine the lowest pressure at which the patient cannot snore (Quiet Pressure).Results. Overall, thirty-eight patients participated. All could simulate snoring. Correlation coefficients were statistically significant between Quiet Pressures and body mass index (rs=0.60[strong positive relationship],p=0.0088), apnea-hypopnea index (rs=0.49[moderate positive relationship],p=0.039), lowest oxygen saturation (rs=-0.47[moderate negative relationship],p=0.048), and oxygen desaturation index (rs=0.62[strong positive relationship],p=0.0057).Conclusion. This pilot study introduces a new concept, which is the final product of over one year of exploration, development, and testing. Five-Minute CPAP Test is a quick, inexpensive, and safe bedside test based on supine awake simulated snoring with nasal CPAP.

scholarly journals Liquidity, Growth and Profitability of Non-financial Public Listed Malaysia: A Malaysian Evidence

2019 ◽  
Vol 10 (3) ◽  
pp. 194
Author(s):  
Mazurina Mohd Ali ◽  
Nik Noor Ayu Nik Hussin ◽  
Erlane K Ghani
Keyword(s):  
Firm Growth ◽  
Positive Relationship ◽  
Negative Relationship ◽  
Sustainable Growth ◽  
Return On Equity ◽  
Listed Firms ◽  
Financial Firms ◽  
Strong Positive Relationship ◽  
Sustainable Growth Rate ◽  
The Relationship

This study examines the relationship between liquidity, growth and profitability of non-financial firms listed on the Bursa Malaysia. Specifically, this study examines the relationship between liquidity and growth on profitability for 50 non-financial public listed firms in Malaysia. Using panel data technique on 250 observations across a five-year period, this study shows that liquidity has a strong positive relationship with profitability in terms of return on asset of the firms. However, liquidity in terms of quick ratio has no impact on profitability. This study also shows that firm growth in terms of sales growth has a negative relationship with profitability. However, this study shows that liquidity and growth in general do not influence profitability in terms of return on equity, although the result shows that sustainable growth rate has a positive relationship on profitability. This study highlights the importance of these measures in measuring performance. The findings in this study provide guidelines to the firms on the measures that best to be used in evaluating performance so that appropriate strategies can be adopted to increase performance.

scholarly journals Anatomical analysis of the pelvis to identify any predisposing anatomical factors for ischiofemoral space pathology: a retrospective study

2020 ◽  
Vol 93 (1108) ◽  
pp. 20190556 ◽  
Author(s):  
Maria Pilar López-Royo ◽  
Esther Valero-Tena ◽  
Mercedes Roca
Keyword(s):  
Positive Relationship ◽  
Negative Relationship ◽  
Morphological Characteristics ◽  
Anatomical Structures ◽  
Significant Positive Relationship ◽  
Anatomical Analysis ◽  
Conventional Mri ◽  
Ischiofemoral Space ◽  
The Mean ◽  
Hip Mri

Objective: Anatomical analysis of the hips and pelvis was performed using MRI to evaluate morphological characteristics and associations between them. We identified correlations between the ischiofemoral space (IFS), quadratus femoris space (QFS), femoral version angle (FVA) and cervicodiaphyseal angle (CDA). Methods: This study involved a retrospective search of a database of consecutive reports of adult hip MRI examinations carried out between January and September 2016. Patients with a medical history likely to affect pelvic and hip morphometry were excluded. Results: A total of 137 adult patients were enrolled in the study (45.3% males and 54.7% females), with a mean age of 50.16 ± 13.87 years. The mean IFS was 20.88 ± 5.96 mm, mean QFS was 15.2 ± 6.18 mm, mean FVA was 12.43 ± 6.98, and mean CDA was 121.27 ± 4.6°. The IFS measurements were significantly correlated with femoral measurements (p = 0.025). These visible differences showed a slight negative relationship (−0.191), and females had a smaller distance between these anatomical structures than males (p < 0.001). Females had a significantly smaller QFS than males (12.42 ± 5.94 vs 18.73 ± 4.48 mm, p = 0.000). There was a small but significant positive relationship between CDA and FVA (p = 0.022), with a correlation coefficient of 0.195. Conclusion: A higher FVA was correlated with a smaller IFS. Furthermore, an increase in the CDA appeared in tandem with an increase in the FVA. Advances in knowledge: A single conventional MRI sequence can alert us to how anatomical factors could predispose individuals to a decrease in IFS.

Role of Microfinance for Entrepreneurial Success

2021 ◽  
Vol 11 (1) ◽  
pp. 1-16
Author(s):  
Mufaro Dzingirai ◽  
Neeta Baporikar
Keyword(s):  
Regression Analysis ◽  
Positive Relationship ◽  
Negative Relationship ◽  
Business Owners ◽  
Entrepreneurial Success ◽  
Scale Type ◽  
Correlation And Regression Analysis ◽  
Strong Positive Relationship ◽  
Spearman’S Correlation

The main objective of the paper is to analyze the influence of microfinance on entrepreneurial success of Zimbabwean SMEs. Adopting explanatory research design with a sample that constitutes 120 business owners of SMEs in Gweru district data collection was through questionnaire administering that used Likert scale-type questions. The hypotheses are analyzed using Spearman's correlation and regression analysis in order to empirically establish the influence of microfinance on entrepreneurial success. The main regression results show a strong positive relationship between microfinance and entrepreneurial success, a weak negative relationship between the business owner's age and entrepreneurial success, and a positive relationship between the level of studies and entrepreneurial success of Zimbabwean SMEs.

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