scholarly journals Statistical Analysis of Rainfall in Haryana

2021 ◽  
Vol 889 (1) ◽  
pp. 012003
Author(s):  
Kaamun ◽  
Sahil Arora ◽  
Manmeet Kaur
Keyword(s):  
Statistical Analysis ◽  
Goodness Of Fit ◽  
Seasonal Forecast ◽  
Total Rainfall ◽  
The Past

Abstract The following research focuses on rainfall of Haryana for past 50 years i.e. from 1968 to 2017. Parameters like Kurtosis, Variance, Goodness of Fit, Mann-Kendall’s Test were performed along with total annual forecast as well as seasonal forecast was predicted. Seasonal rend was also studied so as to study in detail about the past, present, and future of rainfall in Chandigarh. This study was performed with the help of MS-Excel and ExcelStat. A rising trend was found along with total rainfall in of past 5 decades was 513336.2 mm and The maximum and minimum rainfall during this period was found to be 15126.62 mm in 1976 and 5312.51 in 1987 respectively.

scholarly journals Statistical analysis of seasonal rainfall data in Chandigarh: A case study

2021 ◽  
Vol 889 (1) ◽  
pp. 012024
Author(s):  
Kaamun ◽  
Sahil Arora
Keyword(s):  
Statistical Analysis ◽  
Goodness Of Fit ◽  
Seasonal Forecast ◽  
Rainfall Data ◽  
Seasonal Rainfall ◽  
Annual Rainfall ◽  
Maximum Rainfall ◽  
The Past

Abstract The following research focuses on Chandigarh’s annual rainfall of past 50 years i.e. from 1968 to 2017. Parameters like Kurtosis, Variance, Goodness of Fit, Mann-Kendall’s Test were performed along with total annual forecast as well as seasonal forecast was predicted. Seasonal rend was also studied so as to study in detail about the past, present, and future of rainfall in Chandigarh. This study was performed with the help of MS-Excel and ExcelStat. A rising trend was found in Chandigarh for total as well as seasonal rainfall with a maximum rainfall of 1510.9 mm in the year of 1996 and a minimum of 371.1 mm in year 1987, other than this Sen.’s slope was 6.431 whereas skewness was found to be 0.6018.

scholarly journals Extended perfusion protocol for MS lesion quantification

Open Medicine ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 520-530
Author(s):  
Eleftherios Kontopodis ◽  
Kostas Marias ◽  
Georgios C. Manikis ◽  
Katerina Nikiforaki ◽  
Maria Venianaki ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Magnetic Resonance ◽  
Goodness Of Fit ◽  
Accurate Determination ◽  
Acquisition Time ◽  
Minimal Extension ◽  
Dce Mri ◽  
Contrast Enhanced ◽  
Demyelinating Lesions ◽  
Mri Protocol

AbstractThis study aims to examine a time-extended dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) protocol and report a comparative study with three different pharmacokinetic (PK) models, for accurate determination of subtle blood–brain barrier (BBB) disruption in patients with multiple sclerosis (MS). This time-extended DCE-MRI perfusion protocol, called Snaps, was applied on 24 active demyelinating lesions of 12 MS patients. Statistical analysis was performed for both protocols through three different PK models. The Snaps protocol achieved triple the window time of perfusion observation by extending the magnetic resonance acquisition time by less than 2 min on average for all patients. In addition, the statistical analysis in terms of adj-R2 goodness of fit demonstrated that the Snaps protocol outperformed the conventional DCE-MRI protocol by detecting 49% more pixels on average. The exclusive pixels identified from the Snaps protocol lie in the low ktrans range, potentially reflecting areas with subtle BBB disruption. Finally, the extended Tofts model was found to have the highest fitting accuracy for both analyzed protocols. The previously proposed time-extended DCE protocol, called Snaps, provides additional temporal perfusion information at the expense of a minimal extension of the conventional DCE acquisition time.

Houses of cards

2001 ◽  
Vol 14 ◽  
pp. 56-57 ◽  
Author(s):  
Bettina Bergmann
Keyword(s):  
Statistical Analysis ◽  
Domestic Space ◽  
Behavioral Patterns ◽  
Ad Hominem ◽  
The Past ◽  
Recent Scholarship ◽  
New Information ◽  
Exciting Time

We have reached an important moment in the study of the Roman house. The past 20 years have been extremely active, with scholars approaching domestic space down different disciplinary and methodological avenues. Since the important essay on Campanian houses by A. Wallace-Hadrill in 1988, new excavations and scores of books and articles have changed the picture of Pompeii and, with it, that of the Roman house. Theoretical archaeologists have taken the lead, approaching Pompeii as an "archaeological laboratory" in which, armed with the interpretative tools of spatial and statistical analysis, they attempt to recover ancient behavioral patterns. The interdisciplinary picture that emerges is complex and inevitably contradictory. There is so much new information and such a tangle of perspectives that it is time to consider what we have learned and what kinds of interpretative tools we might best employ. Without doubt this is an exciting time in Roman studies. But two overviews of recent scholarship to appear this year, the present one by R. Tybout and another by P. Allison (AJA 105.2 [2001]), express considerable frustration and resort to ad hominem recriminations that signal a heated backlash, at least among some.

scholarly journals The Power of Nations: Measuring What Matters

2018 ◽  
Vol 43 (2) ◽  
pp. 7-44 ◽  
Author(s):  
Michael Beckley
Keyword(s):  
Goodness Of Fit ◽  
Balance Of Power ◽  
The United States ◽  
Important Variable ◽  
World Politics ◽  
Great Powers ◽  
Military Power ◽  
The Past ◽  
Policy Analysts ◽  
Leading Journals

Power is the most important variable in world politics, but scholars and policy analysts systematically mismeasure it. Most studies evaluate countries’ power using broad indicators of economic and military resources, such as gross domestic product and military spending, that tally their wealth and military assets without deducting the costs they pay to police, protect, and serve their people. As a result, standard indicators exaggerate the wealth and military power of poor, populous countries, such as China and India. A sounder approach accounts for these costs by measuring power in net rather than gross terms. This approach predicts war and dispute outcomes involving great powers over the past 200 years more accurately than those that use gross indicators of power. In addition, it improves the in-sample goodness-of-fit in the majority of studies published in leading journals over the past five years. Applying this improved framework to the current balance of power suggests that the United States’ economic and military lead over other countries is much larger than typically assumed, and that the trends are mostly in America's favor.

Statistics and Economic History

1941 ◽  
Vol 1 (1) ◽  
pp. 26-41 ◽  
Author(s):  
Simon Kuznets
Keyword(s):  
Statistical Analysis ◽  
Economic History ◽  
Raw Materials ◽  
The Other ◽  
Economic Study ◽  
Statistical Research ◽  
Historical Approach ◽  
The Past ◽  
Economic Inquiry ◽  
Analytical Tools

This paper deals with the relation between statistical analysis as applied in economic inquiry and history as written or interpreted by economic historians. Although both these branches of economic study derive from the same body of raw materials of inquiry—the recordable past and present of economic society—each has developed in comparative isolation from the other. Statistical economists have failed to utilize adequately the contributions that economic historians have made to our knowledge of the past; and historians have rarely employed either the analytical tools or the basic theoretical hypotheses of statistical research. It is the thesis of this essay that such failure to effect a close interrelation between historical approach and statistical analysis needs to be corrected in the light of the final goal of economic study.

scholarly journals Structural Equation Models with Unobservable Variables and Measurement Error: Algebra and Statistics

1981 ◽  
Vol 18 (3) ◽  
pp. 382-388 ◽  
Author(s):  
Claes Fornell ◽  
David F. Larcker
Keyword(s):  
Statistical Analysis ◽  
Measurement Error ◽  
Structural Equation ◽  
Goodness Of Fit ◽  
Structural Equation Models ◽  
Structural Equations ◽  
Testing System

Several issues relating to goodness of fit in structural equations are examined. The convergence and differentiation criteria, as applied by Bagozzi, are shown not to stand up under mathematical or statistical analysis. The authors argue that the choice of interpretative statistic must be based on the research objective. They demonstrate that when this is done the Fornell-Larcker testing system is internally consistent and that it conforms to the rules of correspondence for relating data to abstract variables.

scholarly journals Encrypted Databases for Differential Privacy

2019 ◽  
Vol 2019 (3) ◽  
pp. 170-190
Author(s):  
Archita Agarwal ◽  
Maurice Herlihy ◽  
Seny Kamara ◽  
Tarik Moataz
Keyword(s):  
Statistical Analysis ◽  
Real World ◽  
Building Block ◽  
Differential Privacy ◽  
Statistical Databases ◽  
The Past ◽  
Statistical Queries ◽  
Encrypted Database

Abstract The problem of privatizing statistical databases is a well-studied topic that has culminated with the notion of differential privacy. The complementary problem of securing these differentially private databases, however, has—as far as we know—not been considered in the past. While the security of private databases is in theory orthogonal to the problem of private statistical analysis (e.g., in the central model of differential privacy the curator is trusted) the recent real-world deployments of differentially-private systems suggest that it will become a problem of increasing importance. In this work, we consider the problem of designing encrypted databases (EDB) that support differentially-private statistical queries. More precisely, these EDBs should support a set of encrypted operations with which a curator can securely query and manage its data, and a set of private operations with which an analyst can privately analyze the data. Using such an EDB, a curator can securely outsource its database to an untrusted server (e.g., on-premise or in the cloud) while still allowing an analyst to privately query it. We show how to design an EDB that supports private histogram queries. As a building block, we introduce a differentially-private encrypted counter based on the binary mechanism of Chan et al. (ICALP, 2010). We then carefully combine multiple instances of this counter with a standard encrypted database scheme to support differentially-private histogram queries.

Is Homeopathy More Effective Now Than a Hundred Years Ago?

2021 ◽  
Vol 34 (02) ◽  
pp. 123-129
Author(s):  
Lex Rutten ◽  
Raj Kumar Manchanda ◽  
José Eizayaga
Keyword(s):  
Statistical Analysis ◽  
Data Management ◽  
Effective Treatment ◽  
Past Century ◽  
Scientific Level ◽  
Amount Of Information ◽  
The Past ◽  
Treatment Data ◽  
Management Techniques ◽  
Systematic Collection

AbstractDuring the past century, the amount of information about homeopathic medicines has grown dramatically. However, the recent coronavirus disease 2019 pandemic has shown that homeopathic practitioners do not use more medicines than a century ago and they seem to use less symptoms to find the proper medicine. This could be explained by the fact that the more than a hundred years old repertory was flawed from the beginning and that more information in the repertory leads the practitioner astray in an increasingly complex labyrinth of data.This can be resolved by applying modern data management techniques based on systematic collection of treatment data and statistical analysis of the data. Homeopathic practitioners should collect these data avoiding bias. This requires additional training of practitioners, which should also result in a higher scientific level of homeopathic practice and increasingly effective treatment as the database grows.

Two subjunctives or three?

2021 ◽  
Author(s):  
Gustavo Guajardo
Keyword(s):  
Logistic Regression ◽  
Prediction Accuracy ◽  
Goodness Of Fit ◽  
Past Tense ◽  
Regression Analyses ◽  
Binary Opposition ◽  
The Past ◽  
Complement Clauses ◽  
Embedded Clauses ◽  
Peninsular Spanish

Abstract This paper examines the use of the three non-periphrastic subjunctives in Spanish in embedded clauses under obligatory subjunctive predicates in the past tense in three Spanish varieties: Argentinean, Mexican and Peninsular Spanish. By means of random forest and logistic regression analyses, I demonstrate that a grammar where the two “past” subjunctives make up one group, such that the variation can be modeled on a binary opposition between (morphologically) past vs. (morphologically) present, achieves better prediction accuracy and goodness-of-fit parameters than a grammar with a three-way split. The results suggest that, at least in complement clauses of obligatory subjunctive predicates, there appear to be no semantic differences between the two past subjunctives but there are still relatively large differences in how the three subjunctive forms are used across the three Spanish varieties studied.1

Order Statistics and Applications

2018 ◽  
pp. 1856-1868
Author(s):  
E. Jack Chen
Keyword(s):  
Distribution Function ◽  
Statistical Analysis ◽  
Order Statistics ◽  
Goodness Of Fit ◽  
Ranking And Selection ◽  
Quantile Estimation ◽  
Cumulative Distribution ◽  
Parametric Statistics ◽  
Goodness Of Fit Hypothesis ◽  
Tests Of Independence

Order statistics refer to the collection of sample observations sorted in ascending order and are among the most fundamental tools in non-parametric statistics and inference. Statistical inference established based on order statistics assumes nothing stronger than continuity of the cumulative distribution function of the population and is simple and broadly applicable. We discuss how order statistics are applied in statistical analysis, e.g., tests of independence, tests of goodness of fit, hypothesis tests of equivalence of means, ranking and selection, and quantile estimation. These order-statistics techniques are key components of many studies.

Sign in / Sign up

Export Citation Format

Share Document