The use of overlays in site quality mapping

1981 ◽  
Vol 11 (2) ◽  
pp. 362-370 ◽  
Author(s):  
Bruce K. Ferguson
Keyword(s):  
Soil Depth ◽  
Site Quality ◽  
Slope Position ◽  
Slope Gradient ◽  
Independent Variables ◽  
Soil Site ◽  
Independent Variable ◽  
Quality Map ◽  
Different Levels ◽  
Slope Orientation

When a sizable forested area is to be managed, some kind of map site quality for that area is necessary so that a determination can be made of the amount and distribution of lands having different levels of site quality. A manual method for chloropleth mapping of red oak site quality using soil-site studies was developed. It mapped site quality as a function of slope gradient, slope position, slope orientation, and soil depth. It consisted of selecting the soil-site study, establishing a uniform mapping format, classifying the independent variables into mapped or mappable ranges, mapping each independent variable separately, and manually overlaying these maps to produce a single site-quality map. The accuracy of the result, the usefulness of the method, and the possibility of different procedures in other studies are discussed.

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.

The use of faecal nitrogen as an index for estimating the consumption of herbage by grazing animals

1963 ◽  
Vol 61 (1) ◽  
pp. 33-43 ◽  
Author(s):  
G. W. Arnold ◽  
M. L. Dudzinski
Keyword(s):  
Organic Matter ◽  
Nitrogen Concentration ◽  
Linear Equations ◽  
Slope Position ◽  
Seasonal Differences ◽  
Faecal Nitrogen ◽  
Independent Variable ◽  
Regression Relations ◽  
The Relationship ◽  
Better Than

Data from thirty-five digestibility trials with sheep in metabolism cages were used to investigate statistically the relationships between organic matter intake (I), faecal organic matter output (F), and the nitrogen concentration in faecal organic matter (N).The data fell easily into groups due to botanical or seasonal differences in the feed. These groups of data were homogeneous and provided highly significant linear equations of the forms I = bF + cFN and I = a + cFN. When compared these groups of data sometimes showed differences in slope, position or both. A quadratic expressionI = bF + cFN + dFN2was found to accommodate a majority of the data but to be less precise than I = a + cFN.A further expression incorporating N as an independent variable was also examined,I = a + cFN2 + eN.This expression, although far from being universally adequate, proved to be generally better than existing formulae. When applied to the data of Greenhalgh et. al. (1960), it substantially reduced heterogeneity between data for spring and data for summer pastures.Causes of variation in the relationship between organic-matter intake and nitrogen in faeces, and some of the hazards of extrapolation from empirical regression relations, are discussed.

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 Standing crops of dominant combretum species at three browsing levels in the Kruger National Park

Koedoe ◽  
1978 ◽  
Vol 21 (1) ◽  
Author(s):  
B.R. Dayton
Keyword(s):  
National Park ◽  
Correlation Coefficients ◽  
Kruger National Park ◽  
Total Biomass ◽  
Regression Equations ◽  
Stem Height ◽  
Basal Diameter ◽  
Independent Variable ◽  
Combretum Apiculatum ◽  
Different Levels

In red bushwillow veld near the Sand River in the Kruger National Park, Republic of South Africa, a determination was made of the standing crops of Combretum apiculatum and C. zeyheri at browsing levels delineated by the maximum feeding heights of impala (1,5 m), kudu (2,5 m) and giraffe (5,5 m). Using harvested sample trees, logarithmic or linear regression equations were generated which related basal diameter or stem height to biomass or percentage of total biomass at the different levels. Biomass was divided into two components: current shoots and wood plus bark. Regression forms and variables which produced the highest correlation coefficients changed with changes in species or browsing level, however, most equations were logarithmic with basal diameter as the independent variable.

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.

Influence of tillage displaced soil on the productivity and yield components of barley in northwest Iran

2012 ◽  
Vol 92 (4) ◽  
pp. 665-672 ◽  
Author(s):  
Leila Nazmi ◽  
Hossein Asadi ◽  
Ruzanna Manukyan ◽  
Hamdollah Naderi
Keyword(s):  
Field Experiment ◽  
Yield Components ◽  
Slope Position ◽  
Soil Productivity ◽  
Slope Gradient ◽  
Position Effects ◽  
Northwest Iran ◽  
Lower Slope ◽  
Tillage Erosion ◽  
Upper Slope

Nazmi, L., Asadi, H., Manukyan, R. and Naderi, H. 2012. Influence of tillage displaced soil on the productivity and yield components of barley in northwest Iran. Can. J. Soil Sci. 92: 665–672. In hilly landforms subject to long-term cultivation, erosion has denuded the upper slope positions of topsoil, and accumulated topsoil in the lower slope positions. Slope gradient and position effects aggregation processes, which in turn impact soil productivity. A field experiment was conducted to assess the tillage-induced soil displacement and its effects on the soil properties and barley (Hordeum vulgare var. Sahand) biomass production for three different landscapes. The study was conducted on a hill slope seeded with barley (1.4–10.1° slope) located in the Mollaahmad watershed of the Ardabil province in northwestern Iran. For this purpose, soil samples were collected from four slope positions in a grassland as well as an agricultural field (dryland). A field experiment was conducted to evaluate the effects of slope gradient and position on barley growth and soil quality. Soil generally had lower organic carbon, available phosphorus, calcium carbonate equivalent, soil water content and mean weight diameter of soil aggregates in the farmland than the grassland, and in the upper slope positions than in the lower slopes. Significantly higher barley growth indices were associated with lower slope positions. Agronomic productivity of the soil was lowest for landscapes with the highest slope gradient. The relationships between tillage erosion and yield components were found to be significant. Spike weight and slope position had the largest contribution for the explanatory capacity of canonical variables (tillage erosion and yield components) estimated when compared with other parameters (slope gradient, dry matter, spike number, grain yield and 1000-grain weight). The findings in this study can be used as a tool to assist farmers, soil and water conservationists, and other policymakers in decision making regarding the use of lands.

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.

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.

Sign in / Sign up

Export Citation Format

Share Document