Accuracy testing of steel and electric groundwater-level measuring tapes: Test method and in-service tape accuracy

Abstract In this paper, we discuss the accuracy of aquifer transmissivity (T) and storativity (S) values, obtained through the processing of hourly and 5-min groundwater level data, regularly and accurately recorded by automated stations. In particular, we discuss the role of the selection of (a) the initial undisturbed hydraulic head level, which might be influenced by prior pumping cycles, and (b) the exact time of start or shutdown of the pump, which might not be exactly recorded. Furthermore, the accuracy of T and S values based on sparse measurements is also examined. The Cooper–Jacob method and the recovery test method have been applied to obtain both T and S, and T values, respectively. Groundwater level measurements at Moudania aquifer, Chalkidiki, Greece, are used as an illustrative example. Our main conclusions are (a) assuming that pumping starts earlier than it actually does, leads to the underestimation of T and the overestimation of S, (b) transmissivity might be overestimated if the residual drawdown, due to previous pumping cycles, is substantial, (c) in recovery tests, the deviation of the straight line that fits the experimental points from the point (1,0) is an indication of residual drawdown, and (d) sparse measurements can offer reasonable estimates.

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Study on the dynamic characteristics of shallow groundwater level under the influence of climate change and human activities in Cangzhou, China

Water Science & Technology Water Supply ◽

10.2166/ws.2020.308 ◽

2020 ◽

Author(s):

Baizhong Yan ◽

Xiaomeng Li ◽

Junliang Hou ◽

Pan Bi

Keyword(s):

Groundwater Level ◽

Human Activities ◽

Meteorological Data ◽

Influence Factors ◽

Shallow Groundwater ◽

Correlation Method ◽

Principal Component ◽

Test Method ◽

Predicted Values ◽

Parametric Statistical Test

Abstract Based on the monitoring data of groundwater level, mining data and meteorological data from 1986 to 2015 in Cangzhou City, the change characteristics of depth of groundwater level were studied. On this basis, the non-parametric statistical test method (Mann-Kendall method) was used to study the trend of depth of groundwater level. Besides the principal component analysis method and grey correlation method were used to study groundwater influence factors. Finally, the multivariable time series model was used to predict the depth of groundwater level. The results showed that: In the past 30 years, influenced by human activities and meteorological changes, the groundwater flow field in 1986–2015 was generally move from southwest to northeast, the depth of groundwater level was increasing from the initial 3.26 to 4.06 m, with an annual increase rate of 0.027 m/a; the contribution rate of exploitation factor, precipitation factor, evaporation factor were 40, 20 and 40%; the fitting figure of the observed values and the predicted values were very good, with an average relative error of 7.73%. According to the prediction schemes, when the evaporation increases by 5%, and the agricultural exploitation decreases by 5%, the depth of groundwater will reach 3.39 m; when the evaporation increases by 10%, and the agricultural exploitation decreases by 10%, the depth of groundwater will reach 3.32 m. This study had important reference significance for regional groundwater treatment and rational utilization.

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A Pattern-Branching Test Method for Dichotomous Classification Problems

PsycEXTRA Dataset ◽

10.1037/e377522004-001 ◽

1971 ◽

Author(s):

Gale H. Roid

Keyword(s):

Test Method ◽

Classification Problems ◽

Dichotomous Classification

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The Projective Test Method in Sport Psychology

PsycEXTRA Dataset ◽

10.1037/e592202012-006 ◽

1972 ◽

Author(s):

Michel Bouet

Keyword(s):

Sport Psychology ◽

Test Method ◽

Projective Test

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Metrological support of individual blood glucose meters in telemedicine

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2019-12-52-56 ◽

2019 ◽

pp. 52-56

Author(s):

Yu.F. Glukhov ◽

N.V. Krutikov ◽

A.V. Ivanov ◽

N.P. Muravskaya

Keyword(s):

Blood Glucose ◽

Blood Glucose Level ◽

Glucose Level ◽

Measurement Data ◽

Test Method ◽

Level Measurement ◽

Measurement Devices ◽

Real Practice ◽

Health Care Centers ◽

Medical Measurement

We have studied and analyzed status and metrological supervision of blood glucose monitors, individual devices for a person’s blood glucose level measurement. It has been indicated that nowadays blood glucose monitors like other individual devices for medical measurement are not allowed to be involved in telemedicine public service. This accounts for absence of metrological supervision with these measurement devices in telemedicine. In addition, the key problem is absence of safe methods and means of remote verificaition, calibration and transmission of measurement data to health care centers. The article offers a remote test method for blood glucose monitors using a number of resistors with values correlating with measured blood glucose level. The available method has been successfully trialed in real practice.

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Customer’s satisfaction on service quality at Vietnam Technological and Commercial Joint Stock Bank – An Giang Branch

Science & Technology Development Journal - Economics - Law and Management ◽

10.32508/stdjelm.v4i3.564 ◽

2020 ◽

Vol 4 (3) ◽

pp. First

Author(s):

Tran Minh Hieu ◽

Nguyen Duong Ngoc Mai Chi

Keyword(s):

Customer Satisfaction ◽

Service Quality ◽

Test Method ◽

Quality Of Services ◽

Factors Affecting ◽

Factors Influencing ◽

Alpha Reliability ◽

Survey Results ◽

Development Orientation

This study applied SERVQUAL scale of Parasuraman et al to measure factors affecting customer satisfaction on service quality at Vietnam Technological and Commercial Joint Stock Bank - An Giang Branch (Techcombank An Giang). The study was conducted to survey 207 customers who have been using the service at Techcombank An Giang. The survey results were analyzed by the Cronbach's Alpha reliability test method, then used Exploratory factor analysis (EFA) to verify and evaluate the scale of service quality. The results of the regression analysis show that customer's satisfaction about service quality at Techcombank An Giang includes four factors: The factor with the highest level is the Empathy with Beta = 0.253, the second of factor is the Responsibility with Beta = 0.248, ranked third in the influence level is the Tangible with Beta = 0.235, and the lowest impact level is the Reliability with Beta = 0.144. The research also uses statistical methods to describe and test the differences of demographic factors with customer's satisfactionon service quality.The analysis results show that there is no difference between customer's satisfaction on service quality and factors such as gender, age, income, number of transaction banks, regular transaction banks, and time to use the service at Techcombank An Giang. Through the research results, the author would like to propose some ideas to improve the quality of services, thereby attracting new customers and importantly, keeping traditional customers because the development orientation of Techcombank is to take care of old customers to cross sell other products of the bank. The Stud results offer a basis for the branch to identify the factors influencing customer satisfaction on their service quality, thereby having an appropriate strategy to improve customer satisfaction.

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An evaluation of ECT sample height for small flute board grades and Box Manufacturer’s Certification compliance

TAPPI Journal ◽

10.32964/tj8.6.24 ◽

2009 ◽

Vol 8 (6) ◽

pp. 24-28

Author(s):

CORY JAY WILSON ◽

BENJAMIN FRANK

Keyword(s):

Compressive Strength ◽

Compressive Load ◽

Test Sample ◽

Test Methods ◽

Test Method ◽

Initial Development ◽

Sample Height ◽

Relationship Of ◽

The Relationship ◽

Corrugated Fiberboard

TAPPI test T811 is the specified method to ascertain ECT relative to box manufacturer’s certification compliance of corrugated fiberboard under Rule 41/ Alternate Item 222. T811 test sample heights were derived from typical board constructions at the time of the test method’s initial development. New, smaller flute sizes have since been developed, and the use of lighter weight boards has become more common. The T811 test method includes sample specifications for typical A-flute, B-flute, and C-flute singlewall (and doublewall and triplewall) structures, but not for newer thinner E-flute or F-flute structures. This research explores the relationship of ECT sample height to measured compressive load, in an effort to determine valid E-flute and F-flute ECT sample heights for use with the T811 method. Through this process, it identifies challenges present in our use of current ECT test methods as a measure of intrinsic compressive strength for smaller flute structures. The data does not support the use of TAPPI T 811 for ECT measurement for E and F flute structures, and demonstrates inconsistencies with current height specifi-cations for some lightweight B flute.

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Evaluating hardness and the S-test

TAPPI Journal ◽

10.32964/tj18.3.161 ◽

2019 ◽

Vol 18 (3) ◽

pp. 161-169

Author(s):

Doug Cash ◽

Benjamin Frank

Keyword(s):

North American ◽

Test Method ◽

Load Curve ◽

Permanent Damage ◽

Additional Load ◽

The North ◽

Complete Failure

The corrugated industry typically quantifies crush resistance using the Concora corrugated medium test (CMT) on fluted medium or flat crush on combined board. These tests compress the materials until the point of complete failure of the flutes. Combined board elastically resists crushing forces until a certain point, the hardness of the structure, while additional load causes permanent damage and deformation. This study investigates how hardness can be measured directly from a load curve collected during CMT (or flat crush) testing and how it varies throughout the North American paper supply. It also explores how hardness correlates with the values obtained from the newly developed S-test. This new test method deserves further study as a potentially more appropriate specification for crush resistance of corrugated medium.

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