Effect of decreased contrast injection flow rate on aortic enhancement in 80-KV peak CT with contrast dose reduction

2021 ◽  
pp. 028418512110671
Author(s):  
Hiroyuki Morisaka ◽  
Koichiro Matsuura ◽  
Haruomi Yamaguchi ◽  
Tomoaki Ichikawa ◽  
Hiroshi Onishi
Keyword(s):  
Regression Analysis ◽  
Contrast Agent ◽  
Flow Rate ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Phantom Experiment ◽  
Injection Flow Rate ◽  
Injection Flow ◽  
Peak Enhancement ◽  
Flow Phantom

Background Effect of decreased injection flow rate of contrast agent at the same iodine dose and delivery rate on aortic enhancement has not been clearly elucidated. Purpose To evaluate the effect of decreased injection flow rate of contrast agent on aortic peak enhancement in a dynamic flow phantom and on aortic enhancement in clinical dynamic 80-kVp computed tomography (CT) with contrast dose reduction. Material and Methods In the dynamic flow phantom experiment, the effect of a decreased injection flow rate at the same total iodine dose and delivery rate on simulated aortic peak enhancement was evaluated. In the clinical retrospective study, we searched 312 patients with renal dysfunction who underwent an 80-kVp abdominal dynamic CT with 40% reduction of contrast agent from a standard 120-kVp protocol and measured the aortic enhancement at the level of the hepatic hilum. Independent predictors for aortic enhancement were determined by multiple linear regression analysis, and after adjustment of significant predictors, independent variables for acquiring optimal aortic enhancement, ≥300 HU, were determined by multiple logistic regression analysis. Results In the phantom experiment, decreased flow rate showed a significant but small descent effect (6%–9%) on simulated aortic peak enhancement. In the multiple linear regression analysis, only age was an independent predictor of aortic enhancement; there was no independent predictor for optimal age-adjusted aortic enhancement of ≥300 HU. Conclusions Decreased injection flow rate had a small influence on aortic enhancement in vitro but had no significant effect on the aortic enhancement in clinical dynamic 80-kVp CT.

ANALISIS PENGARUH INFLASI, KURS DAN IHSG TERHADAP RETURN REKSA DANA SAHAM PT NIKKO SECURITIES INDONESIA PERIODE 2014-2017

2019 ◽  
Vol 2 (2) ◽  
pp. 103
Author(s):  
Muhammad Rois Rois ◽  
Manarotul Fatati Fatati ◽  
Winda Ihda Magfiroh
Keyword(s):  
Regression Analysis ◽  
Exchange Rate ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Stock Price ◽  
Price Index ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Equity Fund ◽  
Stock Price Index

This study aims to determine the effect of Inflation, Exchange Rate and Composite Stock Price Index (IHSG) to Return of PT Nikko Securities Indonesia Stock Fund period 2014-2017. The study used secondary data obtained through documentation in the form of PT Nikko Securities Indonesia Monthly Net Asset (NAB) report. Data analysis is used with quantitative analysis, multiple linear regression analysis using eviews 9. Population and sample in this research are PT Nikko Securities Indonesia. The result of multiple linear regression analysis was the coefficient of determination (R2) showed the result of 0.123819 or 12%. This means that the Inflation, Exchange Rate and Composite Stock Price Index (IHSG) variables can influence the return of PT Nikko Securities Indonesia's equity fund of 12% and 88% is influenced by other variables. Based on the result of the research, the variables of inflation and exchange rate have a negative and significant effect toward the return of PT Nikko Securities Indonesia's equity fund. While the variable of Composite Stock Price Index (IHSG) has a negative but not significant effect toward Return of Equity Fund of PT Nikko Securities Indonesia

Struktur Organisasi, Desain Kerja, Budaya Organisasi Dan Pengaruhnya Terhadap Produktivitas Karyawan Studi Kasus Pada PT. XX Di Jakarta

Liquidity ◽  
2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Yanti Budiasih
Keyword(s):  
Organizational Culture ◽  
Regression Analysis ◽  
Linear Regression ◽  
Organizational Structure ◽  
Research Method ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Job Design ◽  
Employee Productivity ◽  
Dominant Influence

The objectives of this study are to analyze changes in organizational structure, job design, organizational culture and its influence on employee productivity at PT. XX in Jakarta and to identify variables that have a dominant influence on the productivity of employees. The research method used is using multiple linear regression analysis. The results show that the all variables simultaneously and partially change the organizational structure, job design, and organizational culture has a significant impact on employee productivity at PT. XXin Jakarta.

Pengaruh Kepemimpinan dan Disiplin Kerja Terhadap Kinerja Karyawan: Studi Kasus PT Sucofindo Palembang Indonesia

MBIA ◽  
2019 ◽  
Vol 18 (1) ◽  
pp. 76-84
Author(s):  
Muhammad Idris ◽  
Dian Novita Sari
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Random Sampling ◽  
Linear Regression Analysis ◽  
Secondary Data ◽  
Multiple Linear Regression Analysis ◽  
Primary Data ◽  
Collection Method ◽  
Analysis Techniques ◽  
Analysis Technique

The problem in this study is whether there is an influence of leadership and work discipline on the employees’ performance of PT.Sucofindo Palembang City. This research includes associative research. The sample in this study were 88 respondents, with propotionate random sampling analysis technique. The data used were primary data and secondary data. Data collection method through questionnare. Analysis techniques using multiple linear regression analysis, F test (Simultaneoys) and t test (partial) and determination coeffiecient. The results show that there is influence of leadership and work discipline on the performance of PT.Sucofindo Palembang City.

PENGARUH KUALITAS PRODUK DAN RELIGIUSITAS TERHADAP KEPUTUSAN NASABAH PRODUK SIMPANAN PADA BSM CABANG PURWOKERTO

2017 ◽  
Vol 4 (1) ◽  
pp. 189-215
Author(s):  
Yoiz Shofwa Shafrani
Keyword(s):  
Regression Analysis ◽  
Product Quality ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Analytical Tool ◽  
The Other ◽  
Financial Assets ◽  
Islamic Bank

Perkembangan dunia perbankan syariah tidak lepas dari peran para nasabah yang memberikan kepercayaan terhadap pihak perbankan untuk penyimpanan asset keuangannya. Faktanya banyak kelompok nasabah yang memutuskan untuk menjadi nasabah di perbankan syariah karena faktor religiusitasnya. Faktor lain yang dapat ikut mempengaruhi keputusan nasabah adalah kualitas produk. Di mana kualitas produk merupakan karakteristik yang melekat dari suatu produk. Kemungkinan yang terjadi bahwa kebanyakan nasabah pada perbankan syariah juga masih merupakan nasabah perbankan konvensional.Tujuan yang ingin dicapai dalam penelitian ini adalah untuk mengetahui pengaruh kualitas produk dan tingkat religiusitas nasabah terhadap keputusan nasabah untuk menyimpan dananya atau tidak di BSM Cabang Purwokerto. Alat analisis yang digunakan adalah analisis regresi linier berganda, dengan jumlah sampel 100 nasabah. Diperoleh hasil Y = 5,046 + 0,101X1 + 0,218X2. Berdasarkan uji F yang sudah dilakukan maka dapat diketahui bahwa variabel kualitas produk dan religiusitas secara bersama – sama berpengaruh terhadap keputusan nasabah untuk menyimpan dananya di BSM Cabang Purwokerto. Berdasarkan uji t yang sudah dilakukan dapat diketahui bahwa secara partial baik variabel kualitas produk maupun variabel religiusitas berpengaruh terhadap keputusan nasabah untuk menyimpan dananya di BSM Cabang Purwokerto. The progress of the Islamic bank cannot be separated from the role of its customers who give trust to the bank to deposit their financial assets. It is a fact many groups of customers decide to be the customers of the Islamic bank because of their religiosity. The other influences factor of a customer’s decision is the quality of the product. The aim of this research was to determine the effect of product quality and level of customers’ religiosity towards customers’ decision whether to keep their funds in Syariah Mandiri Bank, Branch of Purwokerto, or not. The analytical tool used was multiple linear regression analysis, with a sample of 100 customers. The results indicate Y = 5,046 + 0,101X1 + 0,218X2. Based on F, it can be seen that both variables of product quality and religiosity simultanously affect the customers’ decision to keep theirfunds in BSM Branch of Purwokerto. Based on t test, it can be seen that independently, either variable of product quality or variables of religiosityinfluences the customers’ decision to keep their funds in BSM Branch of Purwokerto.

PENGARUH KUALITAS PELAYANAN DAN WORD OF MOUTH TERHADAP KEPUTUSAN PEMBELIAN DI KAFE POTRET MEDAN

2019 ◽  
Vol 13 (2) ◽  
pp. 199
Author(s):  
Asrye Tutur Sinaga ◽  
Nurul Wardani
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Service Quality ◽  
Word Of Mouth ◽  
Hypothesis Test ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Quality Data ◽  
Purchasing Decisions ◽  
Study Hypothesis

AbstrakPenelitian ini bertujuan untuk mengetahui dan dapat menjelaskan pengaruh Kualitas Pelayanan dan Word Of Mouth terhadap Keputusan pembelian di Kafe Potret Medan. Populasi dalam penelitian ini adalah 700 orang ditentukan dari jumlah pengunjung Kafe Potret Medan dalam kurun waktu satu minggu, dan sampel yang digunakan berjumlah 88 pengunjung. Sedangkan tehnik pengumpulan data menggunakan angket (kuesioner) dan pengujiannya yaitu uji kualitas data dan uji asumsi klasik.Pengujian hipotesis menggunakan analisis regresi linier berganda, uji F, uji t, dan uji R2. Hipotesis penelitian dimensi Kualitas Pelayanan dan Word Of Mouth secara parsial terhadap Keputusan Pembelian diterima jika t hitung > t tabel dengan tingkat signifikan 0.05.Nilai t tabel dalam penelitian ini 1,662. Nilai t hitung variabel X1 sebesar 1,990 t hitung  > t tabel maka hipotesis diterima, nilai t hitung variabel X2 sebesar 2,628 t hitung > t tabel maka hipotesis diterima. Dari 2 variabel, variabel Word Of Mouth yang paling dominan mempengaruhi Keputusan Pembelian  sebesar 2,628. Kata Kunci : Kualitas Pelayanan, Word Of Mouth, Keputusan Pembelian AbstractThe purpose of this study is to identify and able to explain the influence of Service Quality and Word Of Mouth to Purchasing Decisions of Kafe Potret Medan. The population in this study were 700 people from visitors Kafe Potret Medan in one week, and the samples used were 88 visitors. While the techniques of data collection using the questionnaire and use the test of quality data and classical assumption. The hypothesis test uses multiple linear regression analysis, F test, R square and t test. The study hypothesis was partially of Service Quality and Word Of Mouth dimension to  Purchasing Decisions is acceptable if t hitung > t tabel with a significant level 0.05. The t tabel value in this study 1.662. The t hitung X1 is 1.990 that mean t hitung > t tabel then the hypothesis is accepted, t hitung X2 is 2.628 that mean t hitung > t tabel then the hypothesis is accepted. From 2 variables fascination that the most dominant variable for Purchasing Decisions is Word Of Mouth of 2.628. Keywords : Service Quality, Word Of Mouth, Purchasing Decisions

Influence of Competitiveness Factor towards Graduate Competency Level

2020 ◽  
Vol 16 (3) ◽  
pp. 292
Author(s):  
Marfunizah Ma'dan ◽  
Muhamad Takiyuddin Ismail ◽  
Sity Daud
Keyword(s):  
Higher Education ◽  
Regression Analysis ◽  
Service Sector ◽  
Survey Methods ◽  
Linear Regression Analysis ◽  
Organizational Management ◽  
Multiple Linear Regression Analysis ◽  
Emotional Control ◽  
Ministry Of Higher Education ◽  
Competency Level

Intensity to produce a quality human capital is not sufficient by having basic skills for certain field only. The need to have a competitive attitude to enhance their level of competency is much concern for many employers nowadays. Hence, this study is conducted to identify the competitiveness factors that influence the level of competency among graduates, especially who employed in the service sector in Malaysia. This study used survey methods by distributing questionnaires for data collection. The study used stratified purposive sampling by distributing a questionnaire to 450 graduates from 13 services sectors based on a statistic from the Ministry of Higher Education 2016. The finding from the exploratory factor analysis found that seven competitiveness factors were consisting of 47 items that form the competitiveness attitude among graduates. However, based on multiple linear regression analysis, only five models of competitiveness factors have a significant relationship with graduates’ competency which are job competitiveness, organizational management competitiveness, dominant competitiveness, goal competitiveness and self-improvement competitiveness. In fact, aggressive competitiveness and general competitiveness does not influence graduates’ competency level significantly. Thus, the more competitive attitude of graduates such as emotional control, innovation, and competitiveness to be the best is vital for their future marketability. In addition, it is hoped that their level of competence can be enhanced through the development of competitive factors for the advancement of the country's higher education talent.

PENGARUH GAYA KEPEMIMPINAN DAN KOMPENSASI TERHADAP KINERJA PERAWAT PADA RUMAH SAKIT ANNA, PEKAYON-BEKASI

2017 ◽  
Vol 5 (3) ◽  
Author(s):  
Drs. Rasmansyah, MM.
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Performance Improvement ◽  
Leadership Style ◽  
Employee Performance ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Fair Compensation ◽  
A Company ◽  
Good Leader

Leadership style and compensation are the factors that are very important in improving employee performance in a company. The purpose of this study is to determine whether the style of leadership and compensation simultaneously or partially can affect the performance of nurses at Anna Hospital. The method of analysis used in this study is multiple linear regression analysis using SPSS program. The results showed that both simultaneous and partial leadership style and compensation have a positive and significant effect on the performance of nurses. This shows that a good leader who is able to provide direction and motivation to subordinates to achieve the goals set by the company can affect performance improvement as well as the fair compensation provided by the company will increase the productivity of work on every employee to be able to works optimally.

PENGARUH KUALITAS LAYANAN DAN NILAI PELANGGAN TERHADAP KEPUASAN PELANGGAN TOKO SERBA ADA MATAHARI DI PONDOK GEDE PLAZA KOTA BEKASI

2017 ◽  
Vol 5 (3) ◽  
Author(s):  
Drs. Iwan Kurniawan Subagja, SE., MM. ◽  
Adista Fitriani
Keyword(s):  
Regression Analysis ◽  
Customer Satisfaction ◽  
Service Quality ◽  
Customer Value ◽  
Research Study ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Analysis Technique ◽  
Study Population

Business competition is currently increasingly stringent requires that marketers develop marketing strategy that is telling. Companies that win business competition can solidify the company's position to survive in the future. This research study aims to analyze the effect of service quality and customer value on customer satisfaction of Multipurpose Shop Matahari in Pondok Gede Plaza simultaneously and partially. The study population is all customers of multipurpose store Matahari. This research uses multiple linear regression analysis technique, with survey data and questionnaire to 130 respondents. The results of this study indicate that the quality of service and customer value positively and significantly affect the customer satisfaction, service quality and customer value positively and partially significant to customer satisfaction.

Thin Capitalization, Transfer Pricing Aggresiveness, Penghindaran Pajak

2018 ◽  
Vol 2 (1) ◽  
pp. 1-28
Author(s):  
Teza Deasvery Falbo ◽  
Amrie Firmansyah
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Stock Exchange ◽  
Transfer Pricing ◽  
Linear Regression Analysis ◽  
Tax Avoidance ◽  
Total Sample ◽  
Multiple Linear Regression Analysis ◽  
Tax Revenue ◽  
Thin Capitalization

The increase in tax revenue in Indonesia is not accompanied by an increase in tax ratio The low tax ratioindicatestax avoidance practices in Indonesia. Some tax avoidance practices can be conductedthrough transferpricing and thin capitalization.This study is aimed to examine empirically the effect of thin capitalization as well astransfer pricing aggressiveness on tax avoidance practice in Indonesia. This study uses manufacturing companieswhich are listed on Indonesia Stock Exchange (IDX) within the period 2013-2015. Using purposive sampling, theselected samples in this study are 90 companies, so the total sample is 270 samples. The hypothesis examinationused in this study is multiple linear regression analysis of panel data.The results of this study suggest that thincapitalization is positively associated with tax avoidance,while transfer pricing aggressivenessis not associated withtax avoidance.

Investigation of interactions between fabric performance, sewing process parameters and seam pucker of shirt fabric

2021 ◽  
Vol 16 ◽  
pp. 155892502110203
Author(s):  
Daoling Chen ◽  
Pengpeng Cheng ◽  
Yonggui Li
Keyword(s):  
Regression Analysis ◽  
Process Parameters ◽  
Linear Regression Analysis ◽  
Objective Evaluation ◽  
Multiple Linear Regression Analysis ◽  
Complex Dynamic ◽  
Dynamic Interactions ◽  
Sewing Thread ◽  
Sewing Threads ◽  
Seam Pucker

Seam pucker is a common problem in sewing. It not only affects the appearance of product, but also affects product performance. The purpose of this study is to quantify the complex dynamic interactions between fabric performance, sewing process parameters and seam pucker. In order to solve the problem of shirt seam pucker, this study selected four kinds of shirt fabrics, three kinds of polyester sewing threads, three kinds of stitch density and four kinds of seam types for experiments. Through unitary regression analysis, the subjective and objective evaluation results are consistent. Further analysis the results of objective experiment revealed that fabric performances, seams type, sewing thread and stitch densities all have impact on seam pucker. Meanwhile also find out the sewing process parameters for the four fabrics when the seam shrinkage’s were smallest, so it’s helpful for the apparel enterprises to improve seam quality. Multiple linear regression analysis of experimental results show that fabric performances has the greatest influence on seam pucker, thickness, weight and warp density of fabric properties significantly affect seam pucker. And as the breaking elongation of sewing thread increases, seam pucker also increases. Stitch densities and seam type has the least affected on seam pucker, they affect the seam pucker by changing the extension of stitch and thickness of fabric at the seam, respectively. Seam type has greater impact on fabrics that are prone to seam pucker, seam type T1 get larger seam shrinkage than T4. Finally, the complex dynamic interactions was quantified and expressed through mathematical models.

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