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Готові списки джерел за темами / Standard Deviation (SD) / Статті в журналах

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Статті в журналах з теми "Standard Deviation (SD)"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Streiner, David L. "Maintaining Standards: Differences between the Standard Deviation and Standard Error, and When to Use Each." Canadian Journal of Psychiatry 41, no. 8 (1996): 498–502. http://dx.doi.org/10.1177/070674379604100805.

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Many people confuse the standard deviation (SD) and the standard error of the mean (SE) and are unsure which, if either, to use in presenting data in graphical or tabular form. The SD is an index of the variability of the original data points and should be reported in all studies. The SE reflects the variability of the mean values, as if the study were repeated a large number of times. By itself, the SE is not particularly useful; however, it is used in constructing 95% and 99% confidence intervals (CIs), which indicate a range of values within which the “true” value lies. The CI shows the rea

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2

Luneckas, Tomas, Mindaugas Luneckas, and Dainius Udris. "Terrain Irregularity Sensing by Evaluating Feet Coordinate Standard Deviation." Applied Sciences 15, no. 1 (2025): 411. https://doi.org/10.3390/app15010411.

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Locomotion over rough terrain is still a problem yet to be solved for legged robots. One of the problems arises from the inability to identify terrain roughness during locomotion, which could be crucial for decision-making and successful task completion. Our proposed terrain roughness method is inspired by the observation that humans can sense their limb position in space without looking at them, which allows us to estimate obstacle heights. This method is based on robot feet coordinate standard deviation (further referred to as SD) parameter evaluation. SD values could be categorized to repre

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3

Miranda, Camila Souza, Camila Piccirilli Stefani, Marcia Midori Morimoto, Maria Elisa Pimentel Piemonte, and Cristiana Borges Pereira. "Assessment of gait deviation on the Babinski-Weill test in healthy Brazilians." Arquivos de Neuro-Psiquiatria 71, no. 9A (2013): 615–20. http://dx.doi.org/10.1590/0004-282x20130106.

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Objective The aim of this study was to validate a simple and reproducible method for assessing gait deviation on the Babinski-Weill test in a representative sample of healthy Brazilians. Methods Gait deviations were measured in 75 individuals (median=30 years, 41 women) for forward, backwards, and Babinski-Weill steps. The test entailed blindfolded individuals walking 10 paces at a frequency of 1 Hz with deviations subsequently measured by a protractor. Results Mean gait deviation forward was 0.53° with standard deviation (SD)=4.22 and backwards was 2.14° with SD=4.29. No significant differenc

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4

Tiwari, Basant, and Abhay Kumar. "Standard deviation (SD)-based data filtering technique for body sensor network data." International Journal of Data Science 1, no. 2 (2015): 189. http://dx.doi.org/10.1504/ijds.2015.072420.

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5

Andrade, Chittaranjan. "Understanding the Difference Between Standard Deviation and Standard Error of the Mean, and Knowing When to Use Which." Indian Journal of Psychological Medicine 42, no. 4 (2020): 409–10. http://dx.doi.org/10.1177/0253717620933419.

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Many authors are unsure of whether to present the mean along with the standard deviation (SD) or along with the standard error of the mean (SEM). The SD is a descriptive statistic that estimates the scatter of values around the sample mean; hence, the SD describes the sample. In contrast, the SEM is an estimate of how close the sample mean is to the population mean; it is an intermediate term in the calculation of the 95% confidence interval around the mean, and (where applicable) statistical significance; the SEM does not describe the sample. Therefore, the mean should always be accompanied b

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6

Srivastava, Ankit Kumar, A. N. Tiwari, and S. N. Singh. "Harmonic/interharmonic estimation using standard deviation assisted ESPRIT method." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 40, no. 6 (2021): 1067–83. http://dx.doi.org/10.1108/compel-03-2021-0108.

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Purpose This paper aims to accurately estimate harmonics/interharmonics in modern power system. There are several high spectral resolution techniques that have been in use for several years like Estimation of Signal Parameters via Rotational Invariance Technique (ESPRIT), Prony methods, etc. but these techniques require prior knowledge of number of modes present in the signal. Model Order (MO) estimation techniques have to make a trade-off between accuracy and their speed i.e., computational burden. Therefore, there is always a requirement of a technique that is fast as well as accurate. Desig

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7

Chu, Hui-Ying, Hui-Shan Chan, and Mei-Fang Chen. "Effects of Horticultural Activities on Attitudes toward Aging, Sense of Hope and Hand–Eye Coordination in Older Adults in Residential Care Facilities." International Journal of Environmental Research and Public Health 18, no. 12 (2021): 6555. http://dx.doi.org/10.3390/ijerph18126555.

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This study investigated the effects of an 8-week horticultural activity intervention on attitudes toward aging, sense of hope, and hand–eye coordination in 88 older adults in residential care facilities. In the experimental group, the mean score for “attitudes toward aging” increased from 3.81 before the intervention to 4.74 points after the intervention (standard deviation SD = 0.24 and 0.27, respectively), and the control group dropped from 3.75 to 3.70 (standard deviations, respectively SD = 0.27 and 0.28). The mean score for “sense of hope” increased from 3.28 before the intervention to 3.

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8

Fedotova, Tatiana K., and Anna K. Gorbacheva. "Age dynamics of sexual dimorphism of anthropometric dimensions through the ascending period of ontogenesis from 1 month to 17 years (based on Moscow data)." Moscow University Anthropology Bulletin (Vestnik Moskovskogo Universiteta. Seria XXIII. Antropologia), no. 3 (September 14, 2021): 33–43. http://dx.doi.org/10.32521/2074-8132.2021.3.033-043.

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The “model” sample is based on the data of Moscow preschool and school children aged 1-17 years, examined by the authors in 2005-06. The data on infants aged 1-12 months is collected on base of the archives of Moscow maternity hospitals and children’s hospitals in 2007-08. The quantitative estimation of the value of sexual dimorphism is based on Kullback divergence, the analogue of Makhalanobis distance. Results. For the total body dimensions (height, weight, chest girth) the pattern of dynamics of SD is similar. Through the first half of the infancy SD reaches 0.6-0.8 standard deviations. Fur

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9

Xu, Lijun, and Yijia Zhou. "New Robust Reward-Risk Ratio Models with CVaR and Standard Deviation." Journal of Mathematics 2022 (April 16, 2022): 1–12. http://dx.doi.org/10.1155/2022/8304411.

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In this paper, we present two robust reward-risk ratio optimization models. Two new models contain the worst case of not only conditional value-at-risk (CVaR), but also standard deviation (SD). Using properties of reward measure, CVaR measure, and standard deviation measure, new models can be proved to equivalent to min-max problems. When the uncertainty set is an ellipsoid, new models can be further rewritten as second-order cone problems step by step. Finally, we implement new models to portfolio problems. It shows that new models are robust and comparable with mean-CVaR ratio model. Since c

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10

Nurmasitah and Arrini Shabrina Anshor. "PENGARUH MEDIA SCRAPBOOK TERHADAP HASIL BELAJAR PKN KELAS I SD NEGERI 101884 LIMAU MANIS." PENDALAS: Jurnal Penelitian Tindakan Kelas dan Pengabdian Masyarakat 1, no. 2 (2021): 198–208. http://dx.doi.org/10.47006/pendalas.v1i2.81.

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This study aims to determine whether there is an influence of scrapbook media on the learning outcomes of Civics Class 1 SD Negeri 101884 LimauManis. This research was conducted at SD Negeri 101884 LimauManis. The research sample was 30 students. The research method used in this research is quantitative research. The research design used in this study was a nonequivalent control group design. The instrument used was a multiple choice test to determine the effect of scrapbook media on Civics learning outcomes. From the data processing in the experimental class, the mean value of the pretest = 6

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11

Ariffin, Nurul Hazwani, Mohd Syahriman Mohd Azmi, and Nurulhuda Abd Rahman. "The development of ‘Monolektrik Kit’ for the topic on Series and Parallel Circuits for secondary school Science and its’ usability among Physics trainee’s teachers." Journal of Physics: Conference Series 2309, no. 1 (2022): 012066. http://dx.doi.org/10.1088/1742-6596/2309/1/012066.

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Abstract This paper describes the development of a ‘Monolektrik Kit’ teaching and learning tool for secondary school students studying series and parallel circuits. It consists of games that also incorporate inquiry learning during game-based learning sessions. The developmental research design is based on the ADDIE instructional model. The sample consisted of 27 seventh-semester Physics trainee teachers, who were randomly sampled. The instrument was a questionnaire developed from a standardised questionnaire with a four-point Likert scale assessment. It has four dimensions: usefulness, ease o

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12

Zhao, Xiu, Zhe Su, Shaoke Chen, et al. "Growth Curves of Chinese Children with Androgen Insensitivity Syndrome: A Multicenter Registry Study." Journal of Personalized Medicine 12, no. 5 (2022): 771. http://dx.doi.org/10.3390/jpm12050771.

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Objective: To provide new information about androgen insensitivity syndrome (AIS), we studied growth patterns in Chinese children with AIS. Subjects: Data are from 118 untreated AIS patients who were admitted to eight pediatric endocrine centers from January 2010 to December 2019. Methods: In this retrospective cohort study, clinical data were collected from a multicenter database. We compared physical assessment data among AIS patients and standard growth charts for Chinese pediatric population. Results: 1. Children with AIS grew slightly less than the mean before 6 months of age, and then, h

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13

Heiberg, Einar, Henrik Engblom, Marcus Carlsson, et al. "Infarct quantification with cardiovascular magnetic resonance using "standard deviation from remote" is unreliable: validation in multi-centre multi-vendor data." Journal of Cardiovascular Magnetic Resonance 24, no. 1 (2022): 53. https://doi.org/10.1186/s12968-022-00888-8.

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<strong>Background: </strong>The objective of the study was to investigate variability and agreement of the commonly used image processing method "n-SD from remote" and in particular for quantifying myocardial infarction by late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR). LGE-CMR in tandem with the analysis method "n-SD from remote" represents the current reference standard for infarct quantification. This analytic method utilizes regions of interest (ROIs) and defines infarct as the tissue with a set number of standard deviations (SD) above the signal intensity of re

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14

Lee, Ping‐Ing, Mei‐Hwei Chang, Ding‐Shinn Chen, Hey‐Chi Hsu та Chin‐Yun Lee. "Prognostic Implications of Serum α‐Fetoprotein Levels in Neonatal Hepatitis". Journal of Pediatric Gastroenterology and Nutrition 11, № 1 (1990): 27–31. http://dx.doi.org/10.1002/j.1536-4801.1990.tb10052.x.

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SummarySerum β‐fetoprotein (AFP) values in 61 patients with neonatal hepatitis were compared with the normal ranges of AFP in infants and were expressed as standard deviation (SD) scores. The size of SD score indicates how many standard deviations the measured AFP value is away from the mean value of the normal population. An extremely elevated AFP value is arbitrarily defined as a SD score higher than 4.0, i.e., above mean + 4 SD. The result showed that rapid recovery from jaundice before 6 months of age occurred in 16 of 17 (94%) with SD scores of AFP lower than 4.0. By contrast, in 26 with

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15

Dobrakowski, Michał, Marta Boroń, Sławomir Kasperczyk, et al. "The analysis of blood lead levels changeability over the 5-year observation in workers occupationally exposed to lead." Toxicology and Industrial Health 33, no. 6 (2016): 469–77. http://dx.doi.org/10.1177/0748233716674380.

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The aim of the present study was to compare a group of workers with stable lead levels with a group of workers with fluctuating lead levels in terms of selected hematological, biochemical, and immunological parameters. The examined group included male workers occupationally exposed to lead. Blood lead (PbB) levels were measured every 3 months during the 5-year observation. Based on standard deviation of mean PbB levels, the examined population was divided into two groups: low level of fluctuation (L-SD) and high level of fluctuation (H-SD) groups. The mean and maximal PbB levels were significa

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16

Lange, Alex P., Reza Sadjadi, Fiona Costello, Ivo Guber, and Anthony L. Traboulsee. "Reproducibility of Retinal Nerve Fiber Layer Measurements with Manual and Automated Centration in Healthy Subjects Using Spectralis Spectral-Domain Optical Coherence Tomography." ISRN Ophthalmology 2012 (July 30, 2012): 1–6. http://dx.doi.org/10.5402/2012/860819.

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Objective. The aim of this study was to test the reproducibility of the Heidelberg Spectralis SD-OCT and to determine if provided software retest function for follow-up exam is superior to manual centration. Design. Prospective, cross-sectional study. Participants. 20 healthy subjects. Methods. All subjects underwent SD-OCT testing to determine retinal nerve fiber layer (RNFL) measurements sequentially on two different days and with two different centration techniques. Within-subject standard deviation, coefficient of variation, and intraclass correlation coefficient were used to assess reprod

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17

Spiridigliozzi, Luca, Mauro Bortolotti, and Gianfranco Dell’Agli. "On the Effect of Standard Deviation of Cationic Radii on the Transition Temperature in Fluorite-Structured Entropy-Stabilized Oxides (F-ESO)." Materials 16, no. 6 (2023): 2219. http://dx.doi.org/10.3390/ma16062219.

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It is confirmed that Fluorite-structured Entropy-Stabilized Oxides (F-ESO) can be obtained with multicomponent (5) equimolar systems based on cerium, zirconium, and other rare earth elements, selected according to the predictor already proposed by the authors. Indeed, in the present study, three different samples owning a standard deviation (SD in the following) of their cationic radii greater than the threshold value (i.e., SD > 0.095 with cationic radii measured in Å) needed to ensure the formation of the single-phase fluorite structure, were prepared via co-precipitation method. After a

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18

Kasim Mohammad, Fouad. "Calculation of 95% confidence interval of the median lethal dose determined by the up-and-down procedure: a letter to editor." Journal of Ideas in Health 5, no. 3 (2022): 725–26. http://dx.doi.org/10.47108/jidhealth.vol5.iss3.233.

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Acute toxicity of chemicals can be determined by the up-and-down procedure (UDP) to measure the median lethal dose (LD50) in laboratory animals. An improved UPD was introduced to calculate the 95% confidence intervals (CI) for LD50 values: 95% confidence interval = LD50 + the standard error (SE) SE = SD x √2/N (SD= standard deviation of all dosages in N trials in animals). However, not all studies using the UDP report the 95% CI. Using the above mentioned equations, it is possible to calculate the 95% CI of LD50 determined by using the table of Dixon for UDP- section of the standard error 0.61

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19

Guerro-Prado, D., N. Echeverria, L. Jiménez, et al. "Fibromyalgia and psychopathology." European Psychiatry 26, S2 (2011): 1659. http://dx.doi.org/10.1016/s0924-9338(11)73363-6.

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IntroductionFibromyalgia seems to be associated with various forms of psychopathology, particularly major affective disorders.ObjectiveTo evaluate associated psychopathology in a series of women with diagnosis of fibromyalgia.MethodsPatient inclusion from 1st March to 30th June 2010. Symptom Checklist (SCL-90-R) was used for evaluation. SPSS was used for statistical analysis of data and results.ResultsA total of 34 women voluntarily joined our study. Mean age was 52.2 years (standard deviation (SD) 7.17). 11.4% were singled, 74.3% married or unmarried couples, 8.6% were divorced, and 5.7% were

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Khairulisni Saniati. "Upaya Pencegahan Stunting Sejak Dini Di Praktek Mandiri Bidan Sary Rahayu, S.ST Tahun 2024." Jurnal Informasi Pengabdian Masyarakat 2, no. 1 (2024): 180–85. http://dx.doi.org/10.47861/jipm-nalanda.v2i1.851.

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Stunting is a condition of failure to thrive in babies under five years old (toddlers) caused by chronic malnutrition and exposure to repeated infections over a long period of time, especially in the first 1000 days of life (HPK), namely from the womb until the child is two years old. Signs that a child is stunted are that the child's height is shorter or stunted than the standard for children of their age. The condition of stunting only appears after the baby is 2 years old as indicated by a standard deviation (SD) z unit (z-score) value of height for age (TB/U) <-2 SD for short toddlers a

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21

Isojima, Tsuyoshi, Noriko Kato, Yoshiya Ito, Susumu Kanzaki, and Mitsunori Murata. "Growth standard charts for Japanese children with mean and standard deviation (SD) values based on the year 2000 national survey." Clinical Pediatric Endocrinology 25, no. 2 (2016): 71–76. http://dx.doi.org/10.1297/cpe.25.71.

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Daud, Amirul Hamzah, Zalina Ismail, Asilah Abdul Mutalib, and Shaibatul ’. Islamiah Che Man. "Effectiveness of Atvet Towards Employment Rates, Wages Rates and Mastery of Practical Skills of Alumni Students from Kolej Vokasional Teluk Intan." Asian Journal of Vocational Education and Humanities 5, no. 1 (2024): 49–57. https://doi.org/10.53797/ajvah.v5i1.7.2024.

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Agricultural Technical and Vocational Education Training (ATVET) is a program focusing on agriculture skills development. ATVET program is to create skilled workers for the agricultural industry. However, problems occur when employers provide job possibilities to graduates who don't meet all requirements, particularly those related to practical abilities. In fact, graduate employees have deficiencies in every position they are given, which contributes to salary-related problems and the effectiveness of the program is questioned. Therefore, this research aims to study the effectiveness of ATVET

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23

Lin, Shixin, Jianxin Liu, Kaiying Wang, and Diming Wang. "Effects of Stocking Density on Milk Fatty Acids Composition and Oxidative Stability of Mid- and Late-Lactating Dairy Cows." Animals 8, no. 9 (2018): 148. http://dx.doi.org/10.3390/ani8090148.

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The objective of the current study was to investigate the effects of stocking density (SD) on the milk fatty acid profile and oxidation stability in mid- and late-lactating cows. Twenty-four multiparous mid-lactating Holstein dairy cows (milk yield = 34.5 kg/d (standard deviation 0.68), days in milk = 106 (standard deviation 2.2)) and 24 multiparous late-lactating animals (milk yield = 31.8 kg/d (standard deviation 0.98), DIM = 201 (standard deviation 3.5)) were allocated into 12 blocks based on parity, milk yield, and DIM and were randomly assigned to one of four treatments: mid-lactating cow

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24

Patel, Priya, Abigail Kim, Milana Shapsay, et al. "Emergency Department Vital Sign Variability Is Associated with Hematoma Progression in Spontaneous Intracerebral Hemorrhage." Journal of Clinical Medicine 14, no. 13 (2025): 4404. https://doi.org/10.3390/jcm14134404.

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Background/Objectives: Spontaneous intraparenchymal hemorrhage (sIPH) accounts for a significant proportion of strokes and is associated with an estimated 30-day mortality between 35 and 52%. Subsequent hematoma progression (HP) occurs in up to 30% of patients and is associated with blood pressure variability, increasing poor outcomes. This study evaluates systolic blood pressure and heart rate variability in the emergency department (ED) and HP in the first 24 h of admission. Methods: This retrospective study analyzed patients with sIPH presenting to the ED and transferred to a resuscitation

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AHMAD, AZMIR, and CHEN AI HONG. "PRELIMINARY COMPARISON OF THREE ACCOMMODATION MICRO FLUCTUATION REPORTING APPROACHES IN OCULAR STABILITY INVESTIGATION." JOURNAL OF SUSTAINABILITY SCIENCE AND MANAGEMENT 17, no. 12 (2022): 120–31. http://dx.doi.org/10.46754/jssm.2022.12.011.

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Accommodation of micro fluctuation has been the subject of many studies of ocular stability. Although there are three existing micro fluctuation reporting approaches encompassing the standard deviation approach, root means square approach and Fourier transform analysis, the direct comparison of these approaches is lacking. This study aims to descriptively compare the three reporting approaches using a single subject in the initial analysis. Measurement was done on the right eye using an open-field autorefractor (WAM-5500 Grand Seiko Co., Ltd., Japan) via the dynamic mode while looking at a dis

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Suepbunma, Piyakon, and Suthasinee Theerapan. "Developing Vocal Literacy: The Efficiency of Basic Vocal Training Exercises for Students at Yamaha Music School in Mahasarakham, Thailand." International Journal of Education and Literacy Studies 13, no. 2 (2025): 58–66. https://doi.org/10.7575/aiac.ijels.v.13n.2p.58.

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This study aimed to evaluate the effectiveness of basic vocal training exercises for students at Yamaha Music School in Mahasarakham, Thailand, using a quantitative research approach. The research focused on collecting measurable numerical data and was divided into two main components: content validity assessment and effectiveness evaluation of the exercises using the E1 and E² efficiency measures. The statistical methods used for data analysis included Arithmetic Mean, Percentage, and Standard Deviation (SD). The findings indicate that the developed vocal training exercises consist of five co

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Mahlelehlele, Bokang, Phiri J Letuka, Masepiriti Takane, Puleng Noka, and Ithabeleng Mochekoane. "Understanding Obesity: A Study of Knowledge, Attitudes, and Practices in Lesotho's Healthcare Settings." American Journal of Medical and Clinical Research & Reviews 03, no. 08 (2024): 01–09. http://dx.doi.org/10.58372/2835-6276.1195.

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Purpose: The study assessed knowledge, attitudes and practices of adults towards obesity in selected hospitals in Lesotho. Design: A quantitative cross-sectional descriptive study was carried Methods: Researchers recruited 175 adults in outpatient departments from Queen Mamohato Memorial Hospital and St. Joseph Hospital. Questionnaires were used to collect data. The convenience sampling method was used to select respondents. Mean and sample standard deviation scores were computed to determine associations among variables. Findings: Mean and standard deviation scores revealed significant differ

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Tolosa, Andres F., Joel M. DeRouchey, Mike D. Tokach, et al. "A Meta-Analysis to Understand the Relationship between Pig Body Weight and Variation from Birth to Market." Animals 11, no. 7 (2021): 2088. http://dx.doi.org/10.3390/ani11072088.

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This meta-analysis aims to understand the changes in pig body weight (BW) variation from birth to market and develop prediction equations for coefficient of variation (CV) and standard deviation (SD) as a function of BW. Standard deviation is the measure of dispersion of a set of values from the mean and CV is the SD expressed as a percentage of the mean. Data collected from 16 papers and data sets yielded 117,268 individually weighed pigs with sample size ranging from 120 to 4108 pigs. Polynomial regression analysis was conducted separately for each variation measurement. The resulting predic

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Di Cesare, Ernesto, Alessandra Di Sibio, Antonio Gennarelli, et al. "Low Dose versus Standard Single Heartbeat Acquisition Coronary Computed Tomography Angiography." Journal of Clinical Imaging Science 8 (November 15, 2018): 52. http://dx.doi.org/10.4103/jcis.jcis_51_18.

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Purpose: The aim of this study was to compare image quality and mean radiation dose between two groups of patients undergoing coronary computed tomography angiography (CCTA) using a 640-slice CT scanner with two protocols with different noise level thresholds expressed as standard deviation (SD). Materials and Methods: Two-hundred and sixty-eight patients underwent a CCTA with 640 slice CT scanner. In the experimental group (135 patients), an SD 51 protocol was employed; in the control group (133 patients), an SD 33 protocol was used. Mean effective dose and image quality with both objective a

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Clausen, Caroline S., Marie L. Ljubicic, Katharina M. Main, et al. "Congenital Adrenal Hyperplasia in Children: A Pilot Study of Steroid Hormones Expressed as Sex- and Age-Related Standard Deviation Scores." Hormone Research in Paediatrics 93, no. 4 (2020): 226–38. http://dx.doi.org/10.1159/000509079.

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<b><i>Introduction:</i></b> Congenital adrenal hyperplasia (CAH) is an autosomal recessive disease predominantly caused by 21-hydroxylase deficiency. Clinical management in children includes glucocorticoid and often mineralocorticoid treatment alongside monitoring outcomes such as anthropometry, pubertal status, blood pressure, and biochemistry. <b><i>Objective:</i></b> The objective of this pilot study was to present the use of 17-hydroxyprogesterone (17-OHP) and androgen metabolites expressed as standard deviation (SD) scores rather than act

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Salawu, Moshood, Osita Meludu, and Sunday Aniko. O. "Assessment of Background Gamma Radiation and Development of Radiation Contour Map for Kogi Central District, Kogi State, Nigeria." International Journal of Development Mathematics (IJDM) 2, no. 2 (2025): 158–73. https://doi.org/10.62054/ijdm/0202.08.

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Environmental radiation measurement was carried out in Kogi Central Senatorial District of Kogi State, Nigeria. An in-situ measurement approach was adopted using GCA-O6W, Digital Geiger counter and a handheld Global Positioning System equipment. A total of 101 locations were surveyed across the district. In Adavi Local Government Area, the dose rate ranges from 0.04 µSv/h at Iruvucheba to 0.27 µSv/h at Kuroko with mean and standard deviation (SD) value of 0.12. For Okehi LGA, the dose rate ranges from 0.06 µSv/h at Ebako to 0.39 µSv/h at Itakpe1 with a mean and SD value of 0.160.070 µSv/h. In

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Jitendra Kumar, Surabhi Gupta, and Rashmi Kumari. "Use of optical coherence tomography retinal thickness deviation map for hydroxychloroquine retinopathy screening." Asian Journal of Medical Sciences 14, no. 7 (2023): 132–37. http://dx.doi.org/10.3126/ajms.v14i7.53352.

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Background: Hydroxychloroquine (HCQS) is widely used to treat several rheumatic and skin diseases and can cause damage to the outer retina, known as HCQS retinopathy, and is common among long-term users of the drug with higher daily dose by weight. The goal of screening for retinopathy is to recognize signs of toxicity at an early enough stage to prevent the loss of visual acuity. Aims and Objectives: This study aimed to evaluate the diagnostic performance of a commercially available retinal thickness deviation map obtained by spectral-domain (SD) optical coherence tomography (OCT) for screeni

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Sweeney, Rose A., and Paul R. Rexroad. "Comparison of LECO FP-228 "Nitrogen Determinator" with AOAC Copper Catalyst Kjeldahl Method for Crude Protein." Journal of AOAC INTERNATIONAL 70, no. 6 (1987): 1028–30. http://dx.doi.org/10.1093/jaoac/70.6.1028.

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Abstract The LECO FP-228 "Nitrogen Determinator" was compared with the AOAC copper catalyst Kjeldahl method, 7.033-7.037, for the determination of crude protein in feed materials. The completely microprocessor- controlled instrument determines nitrogen by measuring the nitrogen gas following combustion of the sample; it was easy to operate and broadly applicable. A wide variety of feed materials of various nitrogen levels were analyzed in one mixed sequence. Results were precise, accurate, and rapid. Analysis time for one sample was approximately 3 min. Fourteen samples containing 2.5-15.5% N

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Alhodaib, Hala, Manal Alshakhs, Sara Alsaidan, et al. "Evaluation of the Role of Twitter in Increasing the Awareness and Knowledge about Diabetes Among Citizens of Saudi Arabia." Open Public Health Journal 14, no. 1 (2021): 605–11. http://dx.doi.org/10.2174/1874944502114010605.

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Purpose: The objective of this research was to evaluate the role of Twitter in increasing the awareness and knowledge of diabetes among citizens of Saudi Arabia. Methods: In this research we used a purposive sampling method and carried out a quantitative experimental study design. The participants were adults Twitter users from Saudi Arabia that had relative diabetic patients. The sample size was 200 participants, which were divided into an intervention and a control group. Each group consisted of 100 participants. The intervention group was recruited through Twitter, and the control group was

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Li, Linlin, and Shuanggen Jin. "Estimation and evaluation of hourly Meteorological Operational (MetOp) satellites' GPS receiver differential code biases (DCBs) with two different methods." Annales Geophysicae 41, no. 2 (2023): 465–81. http://dx.doi.org/10.5194/angeo-41-465-2023.

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Abstract. Differential code bias (DCB) is one of the Global Positioning System (GPS) errors, which typically affects the calculation of total electron content (TEC) and ionospheric modeling. In the past, DCB was normally estimated as a constant in 1 d, while DCB of a low Earth orbit (LEO) satellite GPS receiver may have large variations within 1 d due to complex space environments and highly dynamic orbit conditions. In this study, daily and hourly DCBs of Meteorological Operational (MetOp) satellites' GPS receivers are calculated and evaluated using the spherical harmonic function (SHF) and t

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Roghmann, Mary-Claire, Alison Lydecker, Lona Mody, C. Daniel Mullins, and Eberechukwu Onukwugha. "Strategies to Prevent MRSA Transmission in Community-Based Nursing Homes: A Cost Analysis." Infection Control & Hospital Epidemiology 37, no. 8 (2016): 962–66. http://dx.doi.org/10.1017/ice.2016.96.

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OBJECTIVETo estimate the costs of 3 MRSA transmission prevention scenarios compared with standard precautions in community-based nursing homes.DESIGNCost analysis of data collected from a prospective, observational study.SETTING AND PARTICIPANTSCare activity data from 401 residents from 13 nursing homes in 2 states.METHODSCost components included the quantities of gowns and gloves, time to don and doff gown and gloves, and unit costs. Unit costs were combined with information regarding the type and frequency of care provided over a 28-day observation period. For each scenario, the estimated co

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Shilov, Viktor V., A. A. Vershinin, G. E. Guseinov, V. A. Lukin, and O. L. Markova. "The standard deviation of the red blood cells distribution width by volume as an assumed biomarker of chronic alcohol intoxication." Hygiene and sanitation 99, no. 6 (2020): 645–48. http://dx.doi.org/10.47470/0016-9900-2020-99-6-645-648.

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Introduction. At present, Russia occupies one of the leading places in the world in ethanol consumption per capita. The actual and unsolved problem remains the diagnosis and prevention of chronic alcoholism. The definition of carbohydrate-deficient transferrin proposed by many authors has many drawbacks, in particular, a rather high cost, as well as a limited sensitivity of the index after two weeks from an episode of ethanol consumption. For this reason, it seems necessary to search for alternative biomarkers of chronic alcoholism. One of the applicants for the role of a marker of chronic alc

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Heni, Heni, and Ulvi Nurlika. "Tingkat Konsentrasi Belajar Anak pada Siswa Kelas IV SD melalui Brain Gym (Senam Otak)." Jurnal Keperawatan Silampari 5, no. 1 (2021): 222–32. http://dx.doi.org/10.31539/jks.v5i1.2820.

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This study aims to determine the effect of the brain gym on the level of concentration in children's learning in fourth-grade elementary school students at SDN Cimalaka II, Cimalaka District, Sumedang Regency. The research method used is a quasi-experimental design using one group pre-test and post-test design. The results showed that the average level of learning concentration in fourth-grade elementary school students before the brain gym was done was 6.18, with a standard deviation of 1.632. Meanwhile, the intermediate level of learning concentration in fourth-grade elementary school studen

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Berecka, Anna, Anna Gumieniczek, and Hanna Hopkaa. "Development and Validation of a New High-Performance Liquid Chromatography Method for the Determination of Gliclazide and Repaglinide in Pharmaceutical Formulations." Journal of AOAC INTERNATIONAL 89, no. 2 (2006): 319–25. http://dx.doi.org/10.1093/jaoac/89.2.319.

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Abstract A new high-performance liquid chromatography method was developed and validated for the quantitation of gliclazide and repaglinide in pharmaceutical formulations. Determination was performed using a LiChroCART RP-18 column, a mobile phase containing acetonitrilephosphate buffer (pH 2.1; 60 + 40, v/v), and ultraviolet (UV) detection at 225 nm. Repaglinide was used as an internal standard for gliclazide determination and gliclazide for repaglinide assay. The method was validated with respect to linearity, precision, robustness, ruggedness, accuracy, and specificity. The calibration grap

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Priska Nurlia Br Simanungkalit. "Pengaruh Model Problem Based Learning Terhadap Hasil Pembelajaran Tematik Terpadu Siswa Kelas VI SD Negeri 055981 Beruam Kabupaten Langkat." Al Yazidiy Jurnal Sosial Humaniora dan Pendidikan 3, no. 2 (2021): 6–10. http://dx.doi.org/10.55606/ay.v3i2.74.

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The average student learning outcomes before using the problem based learning model (pre-test) in thematic learning in class VI was 67.75 and the standard deviation obtained was 11.12. The lowest score is 45 and the highest score is 85. The average student learning outcomes after using the problem based learning model (post-test) in thematic learning in class VI is 76.57 and the standard deviation obtained is 8.95. With the lowest value being 55 and the highest value being 90. Based on the calculation of the t-test, a tcount of 8.83 is obtained with db = 28 -1 = 27 with a significant level (

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Coskun, Abdurrahman, and Wytze P. Oosterhuis. "Statistical distributions commonly used in measurement uncertainty in laboratory medicine." Biochemia medica 30, no. 1 (2020): 5–17. http://dx.doi.org/10.11613/bm.2020.010101.

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Uncertainty is an inseparable part of all types of measurement. Recently, the International Organization for Standardization (ISO) released a new standard (ISO 20914) on how to calculate measurement uncertainty (MU) in laboratory medicine. This standard can be regarded as the beginning of a new era in laboratory medicine. Measurement uncertainty comprises various components and is used to calculate the total uncertainty. All components must be expressed in standard deviation (SD) and then combined. However, the characteristics of these components are not the same; some are expressed as SD, whi

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Pouladzadeh, Mandana, Mehdi Safdarian, Parastoo Moradi Choghakabodi, Fatemeh Amini, and Alireza Sokooti. "Validation of red cell distribution width as a COVID-19 severity screening tool." Future Science OA 7, no. 7 (2021): FSO712. http://dx.doi.org/10.2144/fsoa-2020-0199.

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Aim: The aim of this study is the predictive validation of red cell distribution width (RDW) in COVID-19 patients. Method: In total, 331 COVID-19 patients were classified as ‘severe’ and ‘nonsevere’ groups based on the WHO standard criteria. The levels of RDW standard deviation (SD) were evaluated as both continuous and categorical variables. Multivariate statistical analyses were used. Results: RDW-SD ≤43 and ≤47 fl thresholds showed high specificity (90.1–91.4%) for diagnosing nonsevere illness and no risk of death. RDW-SD >47 indicated severe illness and a high mortality risk while 43&lt

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Pineda, Rence Anne, Jovelyn Salvador, Ronnielyn Galabyo, et al. "A COMPARATIVE ANALYSIS OF CONSUMER PREFERENCES BETWEEN THE SHOPPING APPLICATIONS: TIKTOK AND SHOPEE." Ignatian International Journal for Multidisciplinary Research 2, no. 2 (2024): 8–22. https://doi.org/10.5281/zenodo.10632976.

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This comparative analysis of consumer preference between Shopee and TikTok, aiming to explain the factors influencing user choices and preferences.This paper used quantitative research to investigate the reaction of some people in Valenzuela and Caloocan; their awareness and judgment in understanding how their exposure in online shopping affect their buying preference. This study show the profile mean and standard deviation of the participants perceived usefulness of Shopee app  (x =3.55; SD =0.43) indicating users find it generally more valuable and seamless .The mean and standard deviat

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Lee, Jiann-Der, Ya-Wen Kuo, Chuan-Pin Lee, Yen-Chu Huang, Meng Lee, and Tsong-Hai Lee. "Development and Validation of a Novel Score for Predicting Paroxysmal Atrial Fibrillation in Acute Ischemic Stroke." International Journal of Environmental Research and Public Health 19, no. 12 (2022): 7277. http://dx.doi.org/10.3390/ijerph19127277.

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Atrial fibrillation (AF)—whether paroxysmal or sustained—increases the risk of stroke. We developed and validated a risk score for identifying patients at risk of paroxysmal atrial fibrillation (pAF) after acute ischemic stroke (AIS). A total of 6033 patients with AIS who received 24 h Holter monitoring were identified in the Chang Gung Research Database. Among the identified patients, 5290 with pAF and without AF were included in the multivariable logistic regression analysis to develop the pAF prediction model. The ABCD-SD score (Age, Systolic Blood pressure, Coronary artery disease, Dyslipi

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Wibowo, Ari. "Peningkatan Hasil Belajar Matematika Siswa Kelas V SD Inpres Batua II Bertingkat Makassar Melalui Penerapan Pembelajaran Kooperatif Tipe Numbered Head Together." Pepatudzu : Media Pendidikan dan Sosial Kemasyarakatan 15, no. 1 (2019): 8. http://dx.doi.org/10.35329/fkip.v15i1.305.

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This research is classroom action research which aims to determine whether the application of Numbered Head Together type of cooperative learning can improve the mathematics learning outcomes of fifth grade students of Makassar-level Elementary Inpres Batua II. The subject of this study was the fifth grade students of SD Makassar Inpres Batua II Bertingkat. Data was collected by using test results of learning and observation. The results showed that the average score of students in the first cycle was 54.16 with a standard deviation of 14.76. while in Cycle II the average score is 69.80 with a

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Hsu, Wei-Hao, Chia-Wei Lai, Szu-Chia Chen, et al. "GREATER LOW-DENSITY LIPOPROTEIN CHOLESTEROL VARIABILITY INCREASES THE RISK OF CARDIOVASCULAR EVENTS IN PATIENTS WITH TYPE 2 DIABETES MELLITUS." Endocrine Practice 25, no. 9 (2019): 918–25. http://dx.doi.org/10.4158/ep-2019-0002.

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Objective: Variability in lipid levels has been associated with poor cardiovascular outcomes in patients with coronary artery disease. The aim of this study was to investigate whether low-density lipoprotein cholesterol (LDLC) variability can be used to predict cardiovascular events in patients with type 2 diabetes mellitus (DM). Methods: A total of 5,354 patients with type 2 DM were enrolled in this study. Cardiovascular events including peripheral arterial disease, coronary artery disease, stroke, and cardiovascular death were defined as the study endpoints, and standard deviations of lipid

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James, Oliver A., Yvonne Elce, Eugenio Cillán-Garcia, and Richard J. M. Reardon. "Ex Vivo Comparison of the Accuracy of a Clamped with a Hand-Held Drill Guide for Drilling Distal Third Metacarpals and Metatarsals in Equids." Veterinary and Comparative Orthopaedics and Traumatology 33, no. 01 (2019): 015–21. http://dx.doi.org/10.1055/s-0039-1694972.

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Objectives The aim of this study was to determine whether a clamped drill guide can be used effectively to drill across equine distal third metacarpals and metatarsals and to compare accuracy and speed of a drilling with a hand-held drill guide. Study Design Eighty equine cadaver limbs were divided between four surgeons with varying experience. The limbs were randomly allocated to clamped or hand-held drill guides and placed in a stand in an upright/standing position on a metal table. Drilling times from cis- to trans cortices were measured. Post-drilling computed tomography images were used t

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Isnain, Auliya Rahman, and Yuri Rahmanto. "Employee Performance Evaluation Using the Standard Method of Deviation Multi-Objective Optimization by Ratio Analysis." Journal of Information Technology, Software Engineering and Computer Science (ITSECS) 2, no. 4 (2024): 202–10. https://doi.org/10.58602/itsecs.v2i4.164.

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Employee performance refers to the extent to which an employee can achieve the goals and expectations that have been set by the organization, both in terms of quantity and quality of work. Employee performance appraisals cover various aspects, such as productivity, skills, discipline, creativity, and the ability to adapt to change. The main problem in employee performance evaluation is often related to the accuracy of assessments of various aspects of performance. Employee performance appraisal is a systematic process to evaluate the extent to which an employee meets the standards set by the o

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Hariati, Hariati, Rizka Hidayah Husin Lubis, and Emy Hariati. "Pengaruh Pembelajaran Berbasis Lingkungan Terhadap Minat Belajar Siswa Kelas V SD Islamiyah Tahun Ajaran 2023/2024." Pedagogika: Jurnal Ilmu-Ilmu Kependidikan 4, no. 1 (2024): 77–81. https://doi.org/10.57251/ped.v4i1.1608.

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This study investigates the impact of the Environment-Based Learning Model on students' interest in learning in Class V at Islamiyah Private Elementary School during the 2023/2024 academic year. Using a quantitative research approach, the study employed experimental and control groups to measure the effectiveness of the learning model. The results indicate that the environment-based learning model significantly enhances students' interest in learning. The experimental group, which utilized this model, achieved an average score of 82.2 with a standard deviation of 9.06, whereas the control grou

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Elsworthy, M., and P. N. Plowman. "Peripheral blood lymphocyte counts during standard conformal radiotherapy and TomoTherapy/IMRT for prostate cancer." Journal of Radiotherapy in Practice 7, no. 4 (2008): 223–27. http://dx.doi.org/10.1017/s1460396908006444.

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AbstractLymphopaenia is the earliest and the most sensitive routinely assessed biological parameter of corporeal radiation exposure in clinical practice; bone marrow, lymph nodes and peripheral blood lymphocyte populations are also at risk. During radical prostate radiotherapy, in 28 patients, the mean peripheral lymphocyte count fell from 1.76 × 109/l (standard deviation (SD) 0.63, 95% confidence interval (conf.) 0.23) to 1.10 × 109/l (SD 0.38, conf. 0.14), (p < 0.05). The question was asked as to whether intensity-modulated radiation therapy (IMRT) by TomoTherapy would cause more lymphopa

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