scholarly journals The Retreated Tendency of the COVID-19 Pandemic

2021 ◽  
Author(s):  
Zhengkang Zuo
Keyword(s):  
World War Ii ◽  
Time Window ◽  
Discharge Rate ◽  
Statistical Tests ◽  
T Test ◽  
Control Measures ◽  
Local Policy ◽  
Chi Square ◽  
Chi Square Test ◽  
Complex Phenomena

Abstract Background: The novel virus (COVID-19) pandemic threats the global most since the World War II yet difficult to design effective policy to respond it because widely utilized models only support to predict the future tendency within a narrow time-window. Besides, existing pandemic metrics are sensitive to the detecting policy ( p <0.001), which make them hard to reveal the real infection phenomena, because the fluctuation of these metric values may be an outcome of a suddenly changed detecting policy instead of real infection increase or decrease. Methods: We developed a Benchmark, Amendment and Validation model (BAVM) to make the above complex phenomena clearer, and combined with the hypothesis of potential periodicity of COVID-19 to devote jointly the retreated prediction of pandemic within a broad time-window. Onward, we utilized 113 countries’ epidemic data from January 21, 2020 to August 31, 2020 and detecting policies to carry out our methodology, then validated the results through statistical tests involving chi -square test, one t-test and independent t test. Results: Results exhibit the 4-month of potential periodicity between two adjacent peaks of pandemic ( t =–1.56, p =12.4%). Besides, whether or not the peak emergence has no effect on COVID-19 dynamic trajectory, but the time to firstly peak affects. Meanwhile, uprising the quarantine rate exhibits the earlier expedition towards the first peak emergence (9.7% vs. 6.2%, p =4.1%). On the contrary, the delay of first peak increased the infection rate (0.6% vs. 0.3%, p =1.5%) but also the discharge rate (65% vs. 74%, p =3.8%). Moreover, the indication of the retreated tendency of COVID-19 pandemic is that the next peak should emerge but in fact vanished after one periodicity. Otherwise, the pandemic enters into the next worse phase, typical of high mortality (5% vs. 3.4%, p =5.3%) and low discharge rate (65.8% vs. 74.1%, p =4.2%). Conclusion: To recognize the retreated tendency of this pandemic is quite significant for either the global or the local policy-making, especially in the regular epidemic prevention, control measures and work resumption.

A Practical Approach towards Managing Government Funds in Tripura

Think India ◽  
2015 ◽  
Vol 18 (1) ◽  
pp. 1-6
Author(s):  
Rajat Deb
Keyword(s):  
Factor Analysis ◽  
Internal Control ◽  
Statistical Tests ◽  
Principal Component ◽  
Financial Education ◽  
T Test ◽  
Primary Data ◽  
Chi Square ◽  
Chi Square Test ◽  
Funds Management

The study examines the perception of the employees working in different State Government Departments in Tripura, and of university and college students about funds management in government sector. It obtained primary data from 160 respondents consisting of 96 men and 64 women from all the eight districts of Tripura using judgement and quota sampling technique through schedule and personal interviews. Different statistical tests like Students t-test, Pearsons Chi-square test, and factor analysis like Principal Component Analysis were performed to assess support for the hypotheses. The reliability of the questions and sample adequacy test was also carried out. Through factor analysis, four major factors viz. perceptions about the philosophy of Government accounting, perceptions about lack of financial literacy of the DDOs, perceptions about dysfunctional bureaucracy, and perceptions about slack monitoring and controlling of Governments funds were extracted. Based on such factors, Students t-test was carried out. PCA has been carried out in order to analyze the various components and Chi-square test was carried out to know the association of the male and female respondents perceptions about effective funds management strategies. The results of the study suggest that DDOs lack adequate financial education, they blindly trust the cashier, and books of records are not properly maintained and updated. It also suggests that periodical training, regular updating of books of accounts, accessing net banking facility for keeping vigil and continuous internal control and audit should be initiated for efficient funds management and to prevent employees fraud.

Improving Lesion-Symptom Mapping

2007 ◽  
Vol 19 (7) ◽  
pp. 1081-1088 ◽  
Author(s):  
Chris Rorden ◽  
Hans-Otto Karnath ◽  
Leonardo Bonilha
Keyword(s):  
Brain Injury ◽  
Spatial Perception ◽  
Statistical Tests ◽  
Simulated Data ◽  
Brain Regions ◽  
T Test ◽  
Chi Square ◽  
Lesion Mapping ◽  
Chi Square Test ◽  
Lesion Symptom Mapping

Measures of brain activation (e.g., changes in scalp electrical potentials) have become the most popular method for inferring brain function. However, examining brain disruption (e.g., examining behavior after brain injury) can complement activation studies. Activation techniques identify regions involved with a task, whereas disruption techniques are able to discover which regions are crucial for a task. Voxel-based lesion mapping can be used to determine relationships between behavioral measures and the location of brain injury, revealing the function of brain regions. Lesion mapping can also correlate the effectiveness of neurosurgery with the location of brain resection, identifying optimal surgical targets. Traditionally, voxel-based lesion mapping has employed the chi-square test when the clinical measure is binomial and the Student's t test when measures are continuous. Here we suggest that the Liebermeister approach for binomial data is more sensitive than the chi-square test. We also suggest that a test described by Brunner and Munzel is more appropriate than the t test for nonbinomial data because clinical and neuropsychological data often violate the assumptions of the t test. We test our hypotheses comparing statistical tests using both simulated data and data obtained from a sample of stroke patients with disturbed spatial perception. We also developed software to implement these tests (MRIcron), made freely available to the scientific community.

scholarly journals Analysis of the Death-Leading Accident in Working with Boom Reclaimer Device using the Tripod beta and SCAT Combined Method in a Steel Company

2018 ◽  
Author(s):  
Akbr REZAGHOLIAN ◽  
Nabiollah MANSOURI ◽  
Tooraj DANA
Keyword(s):  
Statistical Tests ◽  
Control Measure ◽  
Control Measures ◽  
Combined Method ◽  
Original Design ◽  
Steel Company ◽  
Chi Square ◽  
Balance Weight ◽  
Chi Square Test ◽  
The Relationship

Introduction: The purpose of this study was to combine the two methods of Tripod beta and SCAT to analyze the accidents, explain their leading details, and track the roots of events at the depth of organizational layers.Methods: This analytical-descriptive study was carried out in one of the steel companies in Iran. To conduct the study, we analyzed one of the death- leading events using the combination of SCAT and Tripod methods. We investigated the relationship between variables and analyzed the intermediate and root causes of the event by Tripod beta method.  Moreover, we proposed some control measures in the SCAT cause and effect table. The information achieved from the questionnaire and effects of the accidents' causes were studied and rated using the chi-square test and Friedman test, respectively.Results: The most important direct cause of the accident was "removal of bucket wheel (in the Boom Claimer device) from the shaft". The most important intermediary cause of the event was "lack of an appropriate immune system at the time of balance weight release". The most important rudimentary cause of the event was "inappropriate location of the device cabin in the original design". Furthermore, the most important control measure was “using harvesting equipment with new design".Conclusion: According to the statistical tests, we found a systematic connection between root causes and intermediate causes of the incident. Moreover, we observed that the effect of root causes and intermediary causes were not similar regarding the accident.

A Practical Approach towards Managing Government Funds in Tripura

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Rajat Deb
Keyword(s):  
Factor Analysis ◽  
Internal Control ◽  
Statistical Tests ◽  
Principal Component ◽  
Financial Education ◽  
T Test ◽  
Primary Data ◽  
Chi Square ◽  
Chi Square Test ◽  
Funds Management

The study examines the perception of the employees working in different State Government Departments in Tripura, and of university and college students about funds management in government sector. It obtained primary data from 160 respondents consisting of 96 men and 64 women from all the eight districts of Tripura using judgement and quota sampling technique through schedule and personal interviews. Different statistical tests like Students t-test, Pearsons Chi-square test, and factor analysis like Principal Component Analysis were performed to assess support for the hypotheses. The reliability of the questions and sample adequacy test was also carried out. Through factor analysis, four major factors viz. perceptions about the philosophy of Government accounting, perceptions about lack of financial literacy of the DDOs, perceptions about dysfunctional bureaucracy, and perceptions about slack monitoring and controlling of Governments funds were extracted. Based on such factors, Students t-test was carried out. PCA has been carried out in order to analyze the various components and Chi-square test was carried out to know the association of the male and female respondents perceptions about effective funds management strategies. The results of the study suggest that DDOs lack adequate financial education, they blindly trust the cashier, and books of records are not properly maintained and updated. It also suggests that periodical training, regular updating of books of accounts, accessing net banking facility for keeping vigil and continuous internal control and audit should be initiated for efficient funds management and to prevent employees fraud.

The Influence of Age and Gender on Mandibular Indices among the Libyan Population

2019 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Negative Correlation ◽  
Bone Mineralization ◽  
Age Groups ◽  
T Test ◽  
Chi Square ◽  
Age And Gender ◽  
Significant Difference ◽  
Chi Square Test ◽  
And Gender ◽  
Libyan Population

Radiographic Mandibular Indices serve as easy and relatively cheap tools for evaluating bone mineralization. Objectives: To examine the effect of age and gender on three mandibular indices: the panoramic mandibular index (PMI), the mandibular ratio (MR) and the mandibular cortical index (MCI), among Libyan population. Methods: The three indices were measured on 317 digital (OPGs) of adult humans (155 males, 162 females). The sample was divided into six age groups (from 18-25 years through 56-65 years). The measurements were analyzed for interactions with age and sex, using SPSS (Statistical Package for Social Studies) software version no. 22. The tests employed were two way ANOVA, the unpaired T-test and chi-square test. Results: The mean PMI fluctuated between 0.37 s.d. 0.012 and 0.38 s.d. 0.012. among the sixth age groups. One-way ANOVA statistical test revealed no significant of age on PMI. On the other hand gender variation has effect on PMI, since independent sample t-test disclosed that the difference between the male and female PMI means statistically significant. ANOVA test showed that the means of MR among age groups showed a negative correlation i.e. MR mean declined from 3.01 in 18-25 age groups to 2.7 in 55-65 age groups. In contrary, the gender showed no effect on MR according two sample t-test at p> 0.05. In regards with MCI, statistical analysis showed that it affected by age that is C1 was decreasing by age while C2 and C3 were increased by age. Using chi square test the result indicated that there is a significant difference among the different age group and the two genders in MCI readings. Conclusion: PMI was influenced significantly by age but minimally by the gender. MR is not affected by gender but has a negative correlation with age. MCI is affected by both age and gender

Analisis Faktor Determinan Pelaksanaan Inisiasi Menyusu Dini Oleh Bidan Di Rumah Sakit Umum Anutapura Palu

2018 ◽  
Vol 1 (1) ◽  
pp. 34
Author(s):  
Ni Nyoman Novita ◽  
Gusman Arsyad
Keyword(s):  
Emergency Room ◽  
Peer Support ◽  
Statistical Tests ◽  
Bivariate Analysis ◽  
P Value ◽  
Chi Square ◽  
Cross Sectional ◽  
Implementation Processes ◽  
Chi Square Test ◽  
The Government

Implementation of IMD in hospitals has decreased from the previous year and has not reached the target set by the government. Some IMD implementation processes have not been carried out according to applicable standards. So that babies do not get an IMD in accordance with existing SOPs. The purpose of this study was to determine the determinant factors associated with the implementation of the IMD by midwives in the Midwifery and Maternity Room Emergency Room (IGD) at the Anutapura General Hospital in Palu. This research method is analytical with cross sectional approach. The population of this study was that all midwives in the obstetrics emergency room and maternity room at Anutapura Palu Hospital were 37 respondents. The sample in this study is total sampling. The analysis used was univariate, and bivariate analysis using the chi square test with a confidence level of 95% (α = 0.05). The results of statistical tests on variable knowledge of midwives with the implementation of IMD p value: 0.018 (p value <0.05). APN training with the implementation of IMD p value: 0.697 (p value> 0.05). length of work with the implementation of IMD p value: 0.029 (p value <0.05). and peer support with the implementation of IMD p value: 0.007 (p value <0.05). Conclusions there is a relationship between knowledge, length of work, peer support with the implementation of the IMD, and training factors that have nothing to do with IMD implementation. The strongest factor in the relationship is peer support. It is recommended that the Anutarapura Palu Hospital be able to motivate midwives so that they can further enhance their role in the implementation and provide support to their colleagues so that the implementation of the IMD can be carried out in accordance with applicable standards.Keywords: Knowledge, APN Training, Duration of work, Implementation of IMD

HUBUNGAN ANTARA USIA, PARITAS, PEKERJAAN DAN INDEK MASSA TUBUH DENGAN KEJADIAN PROLAP ORGAN PANGGUL BERDASARKAN SKOR PELVIC ORGAN PROLAPSE QUANTIFICATION

2019 ◽  
Vol 2 (1) ◽  
pp. 39-44
Author(s):  
Ermawati Ermawati ◽  
Hafni Bachtiar
Keyword(s):  
Pelvic Organ Prolapse ◽  
Case Control Study ◽  
Pelvic Organ ◽  
Case Control ◽  
T Test ◽  
Pelvic Organ Prolapse Quantification ◽  
Chi Square ◽  
Chi Square Test ◽  
Control Study

Prolap organ panggul merupakan kondisi yang mempengaruhi kualitas hidup wanita. Prolaps organ panggul ini dapat disebabkan oleh perlukaan sewaktu proses persalinan, proses penuaan, komposisi jaringan pada seorang wanita, batuk- batuk kronis, atau sering melakukan pekerjaan berat. Pengenalan dini prolaps terkait dengan prognosis pemulihan anatomik dan fungsional organ panggul. Hingga kini, penerapannya dalam dunia klinis belum banyak sehingga pelatihan dan pembelajaran lebih lanjut tentang pelvic organ prolapse quantification (POPQ) jelas diperlukan. Penelitian ini dilakukan dengan metode case control study di polikilinik Obgin RSUP. Dr. M. Djamil Padang mulai bulan September 2013 sampai jumlah sampel terpenuhi sebanyak 98 orang. Dengan 49 orang kelompok kontrol dan 49 orang kelompok kasus .Analisis dilakukan untuk menilai hubungan usia, paritas, pekerjaan dan indek massa tubuh dengan kejadian prolap organ panggul berdasarkan skor POPQ. Data disajikan dalam bentuk tabel. Data diuji dengan t test dan chi square test. Jika p<0,05 menunjukan hasil yang bermakna. Terdapat hubungan yang bermakna antara usia dengan kejadian prolap organ panggul dengan (p<0,05) dan OR 27,871.terdapat hubungan yang bermakna antara paritas dengan kejadian prolap organ panggul dengan (p<0,05) dan OR 52,970.Dari analisa statistik pekerjaan tidak bisa di uji secara statistik.indek massa tubuh tidak terdapat hubungan yang bermakna terhadap kejadian prolap organ panggul.(p>0,05)

Pregnant women readiness to use the Internet to access health information about pregnancy and childbirth: A cross-sectional study (Preprint)

2019 ◽  
Author(s):  
Leila Ahmadian ◽  
Reza Khajouei ◽  
Sudabeh Kamali ◽  
Moghaddameh Mirzaee ◽  
Arefeh Ameri
Keyword(s):  
Pregnant Women ◽  
Health Information ◽  
Demographic Characteristics ◽  
T Test ◽  
Descriptive Statistics ◽  
The Internet ◽  
Chi Square ◽  
Readiness Assessment ◽  
Pregnancy And Childbirth ◽  
Chi Square Test

BACKGROUND Today, the Internet may be a promising tool for interventions for pregnant women. However, these kinds of tools are only helpful if users are ready to use them. OBJECTIVE The present study was conducted with the aim of readiness assessment of pregnant women to use the Internet to access health information about pregnancy and childbirth. METHODS This study was carried out on a sample of 384 pregnant women. Data were collected using a valid and reliable questionnaire. The first section of this questionnaire collected demographic characteristics of the participants. The second part of the questionnaire contains 27 questions covering the following components: infrastructure readiness (6 questions); affordability readiness (3 questions); and skill readiness (12 questions). Data were analyzed with SPSS 19.0 using descriptive statistics, Chi-square test, and T-test. RESULTS This study was carried out on a sample of 384 pregnant women. Data were collected using a valid and reliable questionnaire. The first section of this questionnaire collected demographic characteristics of the participants. The second part of the questionnaire contains 27 questions covering the following components: infrastructure readiness (6 questions); affordability readiness (3 questions); and skill readiness (12 questions). Data were analyzed with SPSS 19.0 using descriptive statistics, Chi-square test, and T-test. CONCLUSIONS The use of the Internet by pregnant women depends on factors such as infrastructure, affordability, and skills readiness. This study showed that speed and the quality of the Internet, hardware and software availability, affordability of the Internet, and access to the Internet training were factors in measuring E-health readiness assessment. CLINICALTRIAL Not applicable

scholarly journals Confronting Theories of Firm Growth in Light of Degrees-of-Freedom Analysis

2015 ◽  
Vol 22 (74) ◽  
pp. 385-404
Author(s):  
Sérgio Fernando Loureiro Rezende ◽  
Ricardo Salera ◽  
José Márcio de Castro
Keyword(s):  
Degrees Of Freedom ◽  
Firm Growth ◽  
Dynamic Capabilities ◽  
Statistical Tests ◽  
Explanatory Power ◽  
Stage Theory ◽  
Chi Square ◽  
Growth Optimum ◽  
Chi Square Test ◽  
Do So

This article aims to confront four theories of firm growth – Optimum Firm Size, Stage Theory of Growth, The Theory of the Growth of the Firm and Dynamic Capabilities – with empirical data derived from a backward-looking longitudinal qualitative case of the growth trajectory of a Brazilian capital goods firm. To do so, we employed Degree of Freedom-Analysis for data analysis. This technique aims to test the empirical strengths of competing theories using statistical tests, in particular Chi-square test. Our results suggest that none of the four theories fully explained the growth of the firm we chose as empirical case. Nevertheless, Dynamic Capabilities was regarded as providing a more satisfactory explanatory power.

Sign in / Sign up

Export Citation Format

Share Document