Research of a Different Kind

2011 ◽  
Vol 19 (1) ◽  
pp. 33-35
Author(s):  
Richard J. Hornick
Keyword(s):  
Human Factors ◽  
Human Behavior ◽  
Expert Witness ◽  
Statistical Significance ◽  
Single Subject ◽  
Judicial Process ◽  
Independent Variables ◽  
Critical Data ◽  
Judicial Decisions ◽  
Independent Variable

The arena of forensics often requires that the human factors expert witness do research that deviates from the classical paradigm of rigid control of independent variables to obtain resulting data. Indeed, in the judicial process, an experiment with only one independent variable and a single subject (or device) may reach beyond statistical significance and be vitally pivotal to judicial decisions. This article provides examples in which very limited research experiments were conducted by the author and that provided critical data to assist juries to reach conclusions pertinent to human behavior and equipment design in accident situations.

scholarly journals Contribution of Human Factors to Shipping Safety

2014 ◽  
Vol 66 (2) ◽  
Author(s):  
Arfena Deah Lestari ◽  
Jaswar Jaswar ◽  
A. S. A. Kader
Keyword(s):  
Human Factors ◽  
Organizational Factor ◽  
Group Factor ◽  
Validity And Reliability ◽  
Individual Factor ◽  
Independent Variables ◽  
Independent Variable ◽  
Lower Contribution ◽  
Classification Society

This paper empirically determines “Contribution of Human Factors to Shipping Safety”. Human factors can be classified into three categories. They are organizational factor, group factor, and individual factor Based on its classification, a questionnaire was made. A questionnaire was tested to 30 respondents who are working at a shipping company (PT. Baruna Jaya) to determine its validity and reliability by using Ms.Excel program. After the test is done, results show that 17 organizational factor statements, 11 group factor statements, 12 individual factor statements, and 10 shipping safety statements are valid with a reliability value for each variables are 0860, 0.767, 0721, and 0.8. By using its valid statements, questionnaires distributed to 86 respondents who are working as passenger ship’s crew at two shipping companies (PT Baruna Jaya and PT. Lestari IndomaBahari). After obtaining data, analysis requirements test (normality, homogeneity, linearity and independence test between independent variables) needs to be done to determine the statistical method to be used. Correlation and regression method by using SPSS program was used to determine the contribution of human factors to shipping safety, either carried out independently between an independent variable to dependent variable, or together between three independent variables to the dependent variable. Analyzed data was found that there are 28.8% contribution of human factors to shipping safety with correlation coefficient is 0.488. This lower contribution of human factors to the shipping safety is one of the causes of ship accidents frequently happen in the case study area. During the last two years there were 22 cases of ship accidents. With respect to that all parties which involve in shipping include shipping companies, the ship’s owners, government, regulatory authorities, classification society and other parties should take a serious concern about safety in shipping by improving on all aspects of human factors.

PENGARUH PELATIHAN DAN MOTIVASI KERJA TERHADAP KINERJA KARYAWAN PT. BAKRIE PIPE INDUSTRIES BEKASI

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Imam Wibowo, M.Si ◽  
Rusma Patriansyah
Keyword(s):  
Statistical Analysis ◽  
Employee Performance ◽  
Positive Influence ◽  
Independent Variables ◽  
Operating Division ◽  
Independent Variable

The purpose of this research is to know the information about relationship between independent variables which are training (X1) and motivation (X2) with dependent variable which is employee performance (Y) of PT. Bakrie Pipe Industries Bekasi, both simultaneously and partially. Data collected from 78 employee of PT. Bakrie Pipe Industries Operating Division randomly using Slovin formula. Then all data was analyzed by using regression and statistical analysis using F-statistic to know the influence of independent variable simultaneously and t-statistic to know the influence of independent variable partially with using SPSS Ver. 22 software. The results of this research shown that: 1). Simultaneously, training and motivation have positive influence and significant to employee performance of PT. Bakrie Pipe Industries Bekasi. 2). Partially, training has positive influence and significant to employee performance of PT. Bakrie Pipe Industries Bekasi. 3). Partially, motivation has positive influence and significant to employee performance of PT. Bakrie Pipe Industries Bekasi.

Online viewers’ choices over advertisement number and duration

2020 ◽  
Vol 14 (2) ◽  
pp. 215-238
Author(s):  
Stephen Nettelhorst ◽  
Laura Brannon ◽  
Angela Rose ◽  
Whitney Whitaker
Keyword(s):  
Exposure Time ◽  
Design Methodology ◽  
Persuasive Messages ◽  
Content Type ◽  
Independent Variables ◽  
Research Designs ◽  
Total Exposure Time ◽  
Online Simulations ◽  
Independent Variable ◽  
Two Independent Variables

Purpose The purpose of this study is to investigate online viewers’ preferences concerning the number and duration of video advertisements to watch during commercial breaks. The goal of the investigations was to assess whether online viewers preferred watching a fewer number of advertisements with longer durations or a greater number of advertisements with shorter durations. Design/methodology/approach Two studies used experimental research designs to assess viewers’ preferences regarding advertisements. These designs used two independent variables and one dependent variable. The first independent variable manipulated the type of choice options given to online viewers (e.g. one 60 s or two 30 s advertisements). The second independent variable manipulated when the choice was given to online viewers (i.e. at the beginning of the viewing experience or in the middle of the experience). The dependent variable measured viewers’ choices concerning their preferred advertisement option. Findings The results across both studies found that participants made choices that minimized total advertisement exposure time when possible. When minimizing total exposure time was not possible, participants made choices that minimized the number of exposures instead. Originality/value These investigations extend the literature on advertisement choice by examining online viewers’ preferences about the format of their advertising experience rather than the content of the persuasive messages themselves. In addition, these investigations provide value by investigating viewers’ responses to stimuli within realistic online simulations rather than abstract hypotheticals.

Abstract 683: Regression of Plaque Volume in One Arterial Bed is not Necessarily Associated with Similar Changes in Other Vessels

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Takayuki Suzuki ◽  
Takashi Nozawa ◽  
Mitsuo Sobajima ◽  
Takashi Ohori ◽  
Akira Matsuki ◽  
...  
Keyword(s):  
Population Based ◽  
Plaque Volume ◽  
Independent Variables ◽  
Before And After ◽  
Independent Variable ◽  
Artery Disease ◽  
Soft Plaque ◽  
Major Factors ◽  
Atherosclerotic Changes

Background: Population-based studies have shown good correlation between severity of atherosclerotic disease in one arterial bed and involvement of other vessels. However, in patients with coronary artery disease (CAD), it remains unclear whether atherosclerotic plaque in an artery might regress or progress in parallel with other vessels. Accordingly, the present study was performed in patients with CAD to compare changes in plaque volume (PV) between the left main (LMT) and right coronary arteries (RCA), thoracic descending aorta (TDA) and common carotid artery (CCA), and to clarify clinical factors and biomarkers which might affect changes in PV in each artery. Methods: Using 64-multislice computed tomography, PVs in each artery were determined before and after 2.0-year follow-up period in 52 patients with CAD (67.4±9.9yo). Based on our previous study using ultrasound, CCA-PV was determined at windows of 90–240HU and TDA-PV determined manually. Coronary soft plaque was determined at windows of 0–75HU. Plasma levels of hsCRP, matrix metalloproteinase (MMP)-9 and urinary 8-iso-prostaglandin F2 α (PGF) were determined at baseline. Results: At baseline, PVs of TDA were correlated with CCA-PV (r=0.38, p<0.02), but PVs of other arteries did not correlate to each other. Two-year later, PVs of LMT, RCA, TDA, and CCA were reduced in 41, 62, 27, and 39% of patients, respectively. Changes in LMT-PV were weakly related with those of TDA-PV (r=0.37, p=0.02) and RCA-PV (r=0.31, p=0.08), but there were no relation between other arteries. The multivariate analysis revealed that treatment with statin and low LDL-cholesterol (C, <100mg/dl) were independent variables regarding a reduction in DTA-PV, but, in LMT, only low LDL-C was independent variable. However, there were no independent variables in RCA or CCA. The ratio of soft PV to total PV was similar between LMT (45.2±7.1%) and RCA (45.7±4.9%) at baseline and was unchanged in the follow-up study. None of hsCRP, MMP-9 or PGF levels was related with PVs of any arteries at baseline and with changes in PVs. Conclusions: Regression of PV in one arterial bed dose not necessarily allow us to predict atherosclerotic changes in the other vessels. Major factors which affect changes in PV may not be homogeneous between arteries.

scholarly journals Impact of infarct location on functional outcome following endovascular therapy for stroke

2018 ◽  
Vol 90 (3) ◽  
pp. 313-319 ◽  
Author(s):  
Charlotte Rosso ◽  
Raphael Blanc ◽  
Julien Ly ◽  
Yves Samson ◽  
Stéphane Lehéricy ◽  
...  
Keyword(s):  
Decision Making ◽  
Functional Outcome ◽  
Internal Capsule ◽  
Brain Regions ◽  
Stepwise Logistic Regression ◽  
Independent Variables ◽  
Good Outcome ◽  
Registration Number ◽  
Independent Variable ◽  
The Relationship

ObjectivesThe relationship between stroke topography (ie, the regions damaged by the infarct) and functional outcome can aid clinicians in their decision-making at the acute and later stages. However, the side (left or right) of the stroke may also influence the identification of clinically relevant regions. We sought to determine which brain regions are associated with good functional outcome at 3 months in patients with left-sided and right-sided stroke treated by endovascular treatment using the diffusion-weighted imaging-Alberta Stroke Program Early CT Score (DWI-ASPECTS).MethodsPatients with ischaemic stroke (n = 405) were included from the ASTER trial and Pitié-Salpêtrière registry. Blinded readers rated ASPECTS on day 1 DWI. Stepwise logistic regression analyses were performed to identify the regions related to 3-month outcome in left (n = 190) and right (n = 215) sided strokes with the modified Rankin scale (0–2) as a binary independent variable and with the 10 regions-of-interest of the DWI-ASPECTS as independent variables.ResultsMedian National Institute of Health Stroke Scale (NIHSS) at baseline was 17 (IQR: 12–20), median age was 70 years (IQR: 58–80) and median day-one NIHSS 9 (IQR: 4–18). Not all brain regions have the same weight in predicting good outcome at 3 months; moreover, these regions depend on the affected hemisphere. In left-sided strokes, the multivariate analysis revealed that preservation of the caudate nucleus, the internal capsule and the cortical M5 region were independent predictors of good outcome. In right-sided strokes, the cortical M3 and M6 regions were found to be clinically relevant.ConclusionCortical non-motors areas related to outcome differed between left-sided and right-sided strokes. This difference might reflect the specialisation of the dominant and non-dominant hemispheres for language and attention, respectively. These results may influence decision-making at the acute and later stages.Trial registration numberNCT02523261.

AN EVALUATION OF THE RELATIONSHIPS BETWEEN DIETARY PARAMETERS AND RUMEN LIQUID TURNOVER RATE

1981 ◽  
Vol 61 (1) ◽  
pp. 91-96 ◽  
Author(s):  
ESSI EVANS
Keyword(s):  
Feed Intake ◽  
Turnover Rate ◽  
Energy Content ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Regression Analyses ◽  
Turnover Rates ◽  
Independent Variables ◽  
Independent Variable ◽  
Ration Composition

Data were accumulated from published sources and were combined in order to estimate the effects of level of feed intake, dietary energy concentration, energy intake level and dietary forage percentage on rumen liquid turnover rates in sheep and cattle. The effects of the dietary parameters on liquid turnover rates were estimated by regression analysis, where all possible combinations of independent variables were considered. It was found that rumen liquid turnover rates increased (P < 0.05) as feed intake increased with both sheep (r = 0.610) and cattle (r = 0.715). From multiple regression analyses it was learned that the inclusion of independent variables that were related to the physical composition of the diet along with variables for intake improved the estimation of liquid turnover rates, although the independent variable related to ration composition differed between sheep and cattle. With data from sheep experiments, elevations in the digestible energy content of the diet depressed (P < 0.05) liquid turnover rate. Based upon data from cattle, decreases in the forage portion of the diet had a similar depressing (P < 0.05) effect.

Unreasonably Dangerous

1987 ◽  
Vol 31 (5) ◽  
pp. 600-604
Author(s):  
Michael W. Riley ◽  
David J. Cochran ◽  
Ram R. Bishu
Keyword(s):  
Human Factors ◽  
Human Behavior ◽  
Environmental Conditions ◽  
Good Manufacturing Practice ◽  
Human Errors ◽  
Factors Influencing ◽  
Human Capability

Human factors specialists need to assess products and situations to determine a level of dangerousness. This paper outlines the factors of such an analysis and suggests a procedure to use. Aspects of human behavior, environmental conditions, potential for encountering sources of energy and good manufacturing practice are addressed. The key elements of human capability and expectation are outlined. Products and activities that have inherent danger are discussed. Human errors and the factors influencing dangerous situations are discussed.

scholarly journals Readiness in Retirement Life

2020 ◽  
Vol 76 ◽  
pp. 01004
Author(s):  
Dewi Astuti
Keyword(s):  
Old Age ◽  
Purpose In Life ◽  
Educational Background ◽  
Life Goals ◽  
Independent Variables ◽  
Pension Program ◽  
Study Population ◽  
Independent Variable ◽  
The Moment ◽  
Variable Focus

This study investigates whether the ownership of a retirement program is owned only by those who have a purpose in life in old age or also owned by those who focus on working well now and do not have a purpose in life in old age. The study population is employees, and entrepreneurs who have worked, with sample criteria have a steady income with a specific educational background. The number of samples is 52 respondents. The result revealed that having the purpose of life in old age, and focusing on the purpose of life at the moment encourage someone to have a pension program. The results of the study stated that the effect of the independent variables on the dependent variable appeared weak. The independent variable "has the purpose of old age life" and the independent variable "focus on life goals current" can explain 0.69 % of the dependent variable "has retirement fund program.

scholarly journals The Influence of the Role of Leadership, Coordination, and Education and Training on Enhancing the Safety Culture At Budiarto Airport

2019 ◽  
Vol 1 (1) ◽  
pp. 10-19
Author(s):  
Widiastuti Widiastuti ◽  
Mohammad Mulyadi
Keyword(s):  
Safety Culture ◽  
Linear Regression Analysis ◽  
Education And Training ◽  
Coefficient Of Determination ◽  
Training And Education ◽  
Independent Variables ◽  
Leadership Quality ◽  
Independent Variable ◽  
And Training

This study aims to determine and analyze the magnitude of the influence of the development of leadership quality, coordination and training and education on improving safety culture. Based on the results of research using partial and multiple linear regression analysis with the help of SPSS version 24 shows that: partially shows that the role of leadership has a positive and significant influence of 26.4% on safety culture. The second independent variable is coordination which has a positive and significant effect of 74.4% on safety culture. Partially the third independent variable of education and training also has a positive and significant effect of 20.5% on the quality of safety culture. Furthermore, the independent variables of the Role of Leadership, coordination, training and education are tested simultaneously or together using the F Test and prove to have an influence with three positive independent variables and all three are significant to the Improvement of Safety Culture with the magnitude of influence can be seen from the coefficient of determination (R2) is 74.9%

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