scholarly journals Evaluation of smartphone applications for measuring the total height of trees

2021 ◽  
Vol 14 (2) ◽  
pp. 7
Author(s):  
J. M. D. Oliveira ◽  
J. P. M. D. Oliveira ◽  
L. S. Cardoso ◽  
D. H. S. Ataíde ◽  
R. A. Curto ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Graphical Analysis ◽  
Smartphone Applications ◽  
Statistical Parameters ◽  
Height Variation ◽  
Total Height ◽  
Simple Measure ◽  
Significant Difference ◽  
Precision And Accuracy ◽  
H 20

The objective of this study was to evaluate the precision and accuracy of smartphone applications for measuring the total height of trees. We measured the heights of 90 trees of different species on the campus of the Federal Rural University of Rio de Janeiro in Seropédica, equally distributed in three height classes: (1) h ≤ 11.5 m; (2) 11.5 <h < 20 m; and (3) h ≥ 20 m. The heights measured by the Vertex III® hypsometer was the reference for the comparison of the tested applications: Measure Height (MH and MDH), Hypsometer (HYP), Simple Measure (SM), Height Calculator (HC), Smart Tools (ST), Height and Distance (HD), Two Point Height (TPH and TPH2) and Tree Meter (TM) using the MOTO G5 smartphone. For data analysis, we performed an F (α = 0,05) test, and if there is a significant difference Dunnett's mean test (α = 0,05) was applied, and height variation coefficients (CV%) were analyzed for all applications used. Then, we carried out the graphical analysis of the differences and the statistical parameters of Bias (V), Mean of Absolute Differences (MD), Standard Deviation of Differences (DPD), ending with the performance index (c). We concluded that the applications Height Calculator (HC), Smart Tools (ST) and, Two Point Height, (TPH) present greater precision and accuracy in the measurement of the total height of the trees. However, we observed that increasing the height of the trees, reduces the performance of the applications, mainly using the Simple Measure (SM) and Height and Distance (HD) applications. The Tree Meter (TM) can be used on trees smaller than 20 m in total height. Measure Height (MH and MDH) and Hypsometer (HYP) applications have low precision and accuracy in estimates.

HISTÓRICO DO COMPRIMENTO TOTAL DE TAMBAQUI (Colossoma macropomum, CHARACIFORMES: CHARACIDAE, CUVIER, 1818) DESEMBARCADO NO MERCADO DE TEFÉ, AMAZONAS, BRASIL, COM NOVE RECOMENDAÇÕES PARA O MANEJO PESQUEIRO DA ESPÉCIE

2008 ◽  
Vol 2 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Jorge Iván Sánchez-Botero ◽  
Danielle Sequeira Garcez ◽  
Wesllen Chaves Cortezão
Keyword(s):  
Sustainable Development ◽  
Standard Deviation ◽  
Environmental Protection ◽  
Fisheries Management ◽  
Historical Data ◽  
Colossoma Macropomum ◽  
Pressure Diffusion ◽  
Significant Difference ◽  
Efficient Mechanisms ◽  
Solimões River

This study evaluates the total length of tambaqui (Colossoma macropomum ) captured in the middle Solimões river and traded during seven years (1993, 1997 and 2000 to 2005) in the Tefé market, Amazon, Brazil. The Mamirauá Institute of Sustainable Development obtained measurements of the total lengths from 42207 individuals. The length average was 45.23 ± 6.29 cm (minim um of 13 cm and maximum of 105.5 cm ) and the mode was 45 cm . From the total tambaquis, 92.86% were smaller than 55 cm and 7.14% measured 58.24 ± 5.41 cm on average. Medium and standard deviation of the lengths recorded in all years showed sizes below the established by the environmental federal agency. The Kruskal Wallis test showed that there is no significant difference between the abundances and medium sizes of the captures during all months of the year. The historical data of the tambaqui fisheries for the middle Solimões region indicate that individuals of this species have been constantly captured at sizes below the minim um length of reproduction. Nine recommendations for tambaquis fisheries management in the region related to more efficient mechanisms of inspection, auto-ecology studies of the species, environmental protection, reduction of fishery pressure, diffusion and educational cam paigns that aim to correct exploitation of this resource are presented in this manuscript.

PENGARUH PENDIDIKAN KESEHATAN REPRODUKSI PADA PEER GROUP (TEMAN SEBAYA) TERHADAP PENGETAHUAN DAN PERSEPSI REMAJA TENTANG PENDEWASAAN USIA PERKAWINAN DI SMA NEGERI 1 KECAMATAN NAMORAMBE KAB. DELI SERDANG 2018

2020 ◽  
Vol 1 (2) ◽  
pp. 56-66
Author(s):  
Irma Linda
Keyword(s):  
Standard Deviation ◽  
Health Education ◽  
Reproductive Health ◽  
Peer Group ◽  
Peer Groups ◽  
A Value ◽  
Significant Difference ◽  
Reproductive Health Education ◽  
The Mean ◽  
Adolescent Perceptions

Background: Early marriages are at high risk of marital failure, poor family quality, young pregnancies at risk of maternal death, and the risk of being mentally ill to foster marriage and be responsible parents. Objective: To determine the effect of reproductive health education on peer groups (peers) on the knowledge and perceptions of adolescents about marriage age maturity. Method: This research uses the Quasi experimental method with One group pre and post test design, conducted from May to September 2018. The statistical analysis used in this study is a paired T test with a confidence level of 95% (α = 0, 05). Results: There is an average difference in the mean value of adolescent knowledge between the first and second measurements is 0.50 with a standard deviation of 1.922. The mean difference in mean scores of adolescent perceptions between the first and second measurements was 4.42 with a standard deviation of 9.611. Conclusion: There is a significant difference between adolescent knowledge on the pretest and posttest measurements with a value of P = 0.002, and there is a significant difference between adolescent perceptions on the pretest and posttest measurements with a value of p = 0.001. Increasing the number of facilities and facilities related to reproductive health education by peer groups (peers) in adolescents is carried out on an ongoing basis at school, in collaboration with local health workers as prevention of risky pregnancy.

INVESTIGATION OF ATTITUDES OF STUDENTS STUDYING AT THE FACULTY OF SPORT SCIENCES FIRAT UNIVERSITY TOWARDS SPORT TOURISM

2021 ◽  
Vol 0 (39) ◽  
pp. 0-0
Author(s):  
Barış Utku ÖZDEMİR ◽  
Ali Serdar YÜCEL
Keyword(s):  
Standard Deviation ◽  
Attitude Scale ◽  
Education Level ◽  
Sport Tourism ◽  
Significance Level ◽  
Significant Difference ◽  
Sports Tourism ◽  
Package Program ◽  
Students Attitudes ◽  
Course Variables

Aim: This research was conducted to examine the attitudes of students studying at Fırat University Faculty of Sport Sciences towards sport tourism. Methods: 1091 students participated in the study. In order to examine the students' attitudes towards sports tourism, the attitude scale towards sports tourism (STYTÖ) developed by Kardaş and Sadık (2018) was used. The data obtained were evaluated in the SPSS 22.0 package program. Frequency, mean, standard deviation, one-wayAnova, independent t-test were used to analyze the data. The significance level of the statistics made was accepted as p <.05. Conclusion: As a result of the study, it was determined that the students' attitudes towards sports tourism were at a positive level and there were signifi-cant differences in terms of some variables (age, class, mother and father education level, branch, department, etc.) according to the sub-dimensions of the scale. It was deter-mined that there was no significant difference in terms of gender, marital status and sports tourism course variables. It is predicted that this research will provide an advantage in determining the attitudes of university students who receive sports education towards sports tourism and evaluating the issue in the sectoral field.

Comparative Analysis of the Exposure and Surgical Freedom of the Endoscopic Extended Minipterional Craniotomy and the Transorbital Endoscopic Approach to the Anterior and Middle Cranial Fossae

2018 ◽  
Vol 17 (2) ◽  
pp. 174-181 ◽  
Author(s):  
Raywat Noiphithak ◽  
Juan C Yanez-Siller ◽  
Juan M Revuelta Barbero ◽  
Raymond I Cho ◽  
Bradley A Otto ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Standard Deviation ◽  
Minimally Invasive ◽  
Vertical Axis ◽  
Endoscopic Approach ◽  
Extended Version ◽  
Specific Approach ◽  
Significant Difference ◽  
Surgical Application ◽  
The Mean

AbstractBACKGROUNDNumerous minimally invasive approaches to the skull base have been successively developed. Knowledge of the surgical nuances of a specific approach may facilitate approach selection. This study sought to compare the nuances of an extended version of the minipterional craniotomy (EMPT) with those of the transorbital endoscopic approach (TOEA) to the anterior and middle cranial fossae (ACF and MCF, respectively).OBJECTIVETo quantitatively analyze and compare the area of exposure and surgical freedom between EMPT and TOEA to the ACF and MCF.METHODSEMPT and TOEA were carried out in 5 latex-injected cadaveric heads, bilaterally (10 sides). For each approach, the area of exposure, surgical freedom, and angle of attack were obtained with neuronavigation and statistically compared.RESULTSNo significant difference was found between the mean area of exposure of EMPT and TOEA at the ACF and MCF (P = .709 and .317, respectively). The mean exposure area at the ACF was of 13.4 ± 2.6 cm2 (mean ± standard deviation) and 13.0 ± 1.9 cm2 for EMPT and TOEA, respectively. Except for the crista galli, EMPT afforded a larger area of surgical freedom at all targets. EMPT also achieved significantly greater attack angles in vertical axis except to the crista galli. The horizontal attack angles to all targets were similar between approaches.CONCLUSIONEMPT and TOEA offer a comparable area of exposure at the ACF and MCF in the cadaver; however, the instrument maneuverability afforded by EMPT is superior. Further studies are necessary to better define their precise surgical application.

Self-Concepts of Preschool Girls in a Preballet Program

1993 ◽  
Vol 77 (1) ◽  
pp. 104-106
Author(s):  
Anne E. Kozlowski
Keyword(s):  
Preschool Children ◽  
Standard Deviation ◽  
Normative Data ◽  
T Test ◽  
The Self ◽  
Self Concept ◽  
Significant Difference ◽  
One Year

The self-concepts of 10 5-yr.-old girls enrolled in a preballet program at a ballet school in Tulsa, Oklahoma for over one year were measured using the Purdue Self-concept Scale for Preschool Children. Their scores were compared against the scale's normative data for girls of similar age. A one-sample two-tailed t test showed girls' mean was 1 standard deviation above the normative population's mean, a significant difference. Preballet education may be an effective tool for enhancing self-concept, although selective factors may contribute also.

scholarly journals Circadian variation of fatigue in both patients with paralytic poliomyelitis and post-polio syndrome

2013 ◽  
Vol 71 (7) ◽  
pp. 442-445 ◽  
Author(s):  
Celiana Figueiredo Viana ◽  
Márcia Pradella-Hallinan ◽  
Abrahão Augusto Juviniano Quadros ◽  
Luis Fabiano Marin ◽  
Acary Souza Bulle Oliveira
Keyword(s):  
Standard Deviation ◽  
Sleep Disturbances ◽  
Circadian Variation ◽  
Progressive Increase ◽  
Paralytic Poliomyelitis ◽  
Poor Sleep ◽  
Poor Sleep Quality ◽  
Significant Difference ◽  
Sleep Parameters

ObjectiveIt was to evaluate the degree of fatigue in patients with paralytic poliomyelitis (PP) and with post-polio syndrome (PPS), and correlate it with parameters of sleep and the circadian cycle.MethodsThirty patients, 17 female (56.7%), participated in the study: they answered the Revised Piper Fatigue Scale and performed a nocturnal polysomnographic study. Eleven had PP (mean age±standard deviation of 47.9±6.4 years), and 19 had PPS (mean age±standard deviation of 46.4±5.6 years).ResultsOur study showed that fatigue was worse in the afternoon in the PP Group and had a progressive increase throughout the day in the PPS Group. We also observed compromised quality of sleep in both groups, but no statically significant difference was found in the sleep parameters measured by polysomnography.ConclusionFatigue has a well-defined circadian variation, especially in PPS Group. Poor sleep quality is associated with fatigue and, therefore, sleep disturbances should be evaluated and treated in this group of PPS.

scholarly journals Outcome of nutritional intervention measures at a nutrition rehabilitation centre in Krishna district, Andhra Pradesh

2018 ◽  
Vol 5 (12) ◽  
pp. 5150
Author(s):  
Deepthi Pagali ◽  
Suneetha Bollipo ◽  
Harsha B. Korrapolu ◽  
Mohammed Abdul Rahman
Keyword(s):  
Standard Deviation ◽  
Severe Acute Malnutrition ◽  
Nutritional Intervention ◽  
High Rate ◽  
Acute Malnutrition ◽  
Rehabilitation Centre ◽  
District Health ◽  
Target Weight ◽  
Significant Difference ◽  
Nutrition Rehabilitation

Background: Nutrition rehabilitation centre (NRC) is a unit in a district health facility, where children with severe acute malnutrition are admitted and provided with nutritional and therapeutic care.Methods: Analysis of nutritional data of all the children admitted to NRC at Krishna district from January 2017 to July 2018. Statistical analysis was done using SPSS.Results: A total of 200 children were included in the study. The overall mean weight at admission was found to be 8.30 kg with a standard deviation of 2.35 kg and the mean weight at the time of discharge is 9.57 kg with a standard deviation of 2.61 kg. There is a statistically significant difference in weight and mid arm circumference at admission and discharge. Mean duration of hospital stay is around 18.67±5.4 days. Target weight is achieved in 71% of the study group.Conclusions: Present study reflects that NRCs have been playing a key role to cope up with the problem of severe acute malnutrition as demonstrated by a high rate of weight gain at discharge as well as during follow ups. 

scholarly journals Determination of factor Xa inhibition doses of low-molecular heparin, nadroparin and reviparin in urological patients

2007 ◽  
Vol 64 (8) ◽  
pp. 538-542
Author(s):  
Svetlana Pavlovic ◽  
Sladjana Zivkovic ◽  
Goran Koracevic
Keyword(s):  
Factor Xa ◽  
Surgical Operation ◽  
Moderate Risk ◽  
Statistical Parameters ◽  
Nadroparin Calcium ◽  
The People ◽  
Factor Xa Inhibition ◽  
Significant Difference ◽  
Higher Doses

Background/Aim. The inhibition of factor Xa (FX) by the use of low-molecular heparin (LMH) is important clinical procedure in patients with moderate and high risk for the developament of venous thromboembolism (VTE) and pulmonary embolism (PE). The aim of this study was to determine the level of inhibition of FXa by the use of prophylactic doses of LMH nadroparin-calcium and reviparine-sodium which were applied in urological patients with moderate risk for VTE and PE. Methods. The examination included 80 urological patients divided into 4 groups after urological, uroradiological and anesthesiological preoperative preparation and categorization of anesthesiological risk according to the ASA III classification. The first two groups, of 20 patients each, received the recommended doses of LMH in accordance with the preoperative risk, and an inhibition of FXa 48 hours after the surgical operation and four hours after the administration of LMH was determined. Heptest and homogenous anti-Xa test were used for monitoring of FXa inhibition. Since the obtained anti-Xa values were not satisfactory, two more groups were formed and given double the recommended doses. In these new groups, inhibition of FXa was in recommended range. Standard descriptive statistical parameters were used for describing the charateristics of the people from the formed groups. Results. All the patients examined were clinically estimated as patients of moderate risk, for VTE and PE. There were no statistically singificant difference in body weight of the patients who received nadroparin-calcium 0.3 ml and reviparine-sodium 0.25 ml and those who received their double doses, respectively. The level of FXa inhibition in the group in which the dose of nadroparin-calcium of 0.6 ml was applied was statistically significantly higher than in the group which received the dose of 0.3 ml (Mann-Whitney U test: Z = 5.416; p < 0.0001). The level of FXa in the group given reviparine-sodium 0.5 ml was significantly higher than in the group which received the half of this dose (Mann-Whitney U test: Z = 5.416; p < 0.0001). This research did not confirm a statistically significant difference in the levels of FXa inhibition in patients who received nadroparincalcium as VTE and PE prophilaxis in the dose of 0.6 ml and those who received reviparin-sodium 0.5 ml (in two doses of 0.25 ml) (Mann-Whitney U test: Z = 0.163; p > 0.05). Conclusion. According to biochemical monitoring, the recommended doses of LMH are insufficient for the prophylactic inhibition of FXa in urological pateints with moderate risk for VTE and PE, so the higher doses which inhibit FXa are recommended. .

scholarly journals Self-etching primer: the effect of contamination with a mixture of saliva and blood on bonding metallic brackets

2013 ◽  
Vol 1 (2) ◽  
pp. 175
Author(s):  
Bernardo Urbanetto Peres ◽  
Felipe Weidenbach Degrazzia ◽  
Renésio Armindo Ghers ◽  
Fabíola Rossato Arrais ◽  
Vilmar Antonio Ferrazzo
Keyword(s):  
Standard Deviation ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Color Change ◽  
Homogeneous Distribution ◽  
Distilled Water ◽  
Significant Difference ◽  
Student Test ◽  
Group 2 ◽  
Group 1

PURPOSE: To evaluate the shear bond strength (SBS) of metallic brackets bonded with Transbond Plus Self-Etching Primer (TPSEP) and Transbond Plus Color Change (TPCC) under contamination with a mixture of saliva and blood. MATERIALS AND METHODS: 42 human premolars were randomly divided into 2 groups (n=21). Group 1 (G1) were bonded under no contamination, and Group 2 (G2) was contaminated with saliva/blood before bonding. Both groups were bonded according to the manufacturer’s instructions and were cleaned with pumice before bonding. The shear bond strength (SBS) tests were performed after 24 hours in distilled water at 37°C and after thermocycling. RESULTS: Both groups showed a homogeneous distribution in the Levene’s test (p>0.05). The main shear bond strength value of G1 was 8.89 MPa with a standard deviation of 2.27; the value for G2 was 6.00 MPa with a standard deviation of 2.62 MPa. There was a significant difference between G1 and G2 (t-student test p<0.05). IRA scores indicated that the main value was IRA 0, and no significant difference (α=0.05) was found between the groups. CONCLUSION: Contamination of blood mixed with saliva significantly decreases the shear bond strength, but even so, the performance is clinically acceptable.

scholarly journals Risk Factors Associated with Breast Cancer

2020 ◽  
pp. 1-3
Author(s):  
Victor Manuel Vargas-Hernandez
Keyword(s):  
Breast Cancer ◽  
Risk Factors ◽  
Standard Deviation ◽  
Descriptive Analysis ◽  
Familial Risk ◽  
Breast Cancer Diagnosis ◽  
Graphical Analysis ◽  
Overweight And Obesity ◽  
Reproductive Life ◽  
Age Range

Background: It is reported that genetic and hereditary-familial risk factors for breast cancer contribute 5% and the majority are related to the reproductive life of women. Objective: it has the purpose of determining if the factors considered as risk factors are associated with breast cancer in a group of Mexican women. Material and Methods: A retrospective, observational and descriptive study was carried out in 162 women with breast cancer for 3 years (2002-2004) at the Hospital Juárez de México to determine if the usual risk factors are related to breast cancer. The descriptive analysis included localization and dispersion measures, as well as a graphical analysis using bar diagrams. Results: In the sample of 162 women with breast cancer, the age range at the time of breast cancer diagnosis was from 27 to 78 years (mean of 47.60, standard deviation of 13.09); early menarche only appeared in 12.3% (n=20). The mean age of the first pregnancy was 22 years and of menopause at 51 years of age; 72.2% lactated (n=117) and 45.1% did so for more than 6 months (n=73); the menstrual pattern disorder appeared in 22.8% of cases (n=37); Menopausal hormone therapy was previously used in 19.8% (n=32). The hereditary-family history of breast cancer appeared in 14.2% of the cases (n=23). It seems to be correlated with the fact that in patients with nulliparity, alcoholism and the absence of breastfeeding, breast cancer occurs at an early age (< 45 years) and the risk factor that is related to breast cancer is overweight and obesity with 54.26% and 17.11% respectively (average of 28.00, standard deviation of 3.032). Conclusion: no correlation was found between risk factors considered common for breast cancer; only overweight and obesity were related to its development, further research is required to confirm whether this correlation occurs in other countries.

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