137,196 research outputs found
Evaluation of the Victorian Safe Driving Program (SDP) for Hoon Drivers
No full textThis study aimed to determine whether the Safe Driving Program (SDP), a behaviour change program ordered by the courts operating in Victoria, Australia, was successful in reducing the offending and crashes by hoon drivers. A sample of 3,324 hoon drivers who completed the SDP were compared with 1,063 hoon drivers who were ordered to complete the program but failed to do so. These two groups were also compared with a third group consisting of 30,678 hoon drivers who, for various reasons, had not been ordered to complete the SDP. Longitudinal group comparisons were made regarding overall, hoon and serious offending, as well as the number of crashes, fatalities and serious injuries and the proportion of offenders receiving bans and vehicle impoundments. Generalised Estimating Equations were used for this purpose, providing estimates of group differences. It was found that statistically significant benefits were obtained through the placement of SDP orders. However, differences between the offenders that completed their SDP order and those that failed to complete their SDP order were not always as expected. Reasons for this are explained and implications for the program, policies and penalties are discussed. No changes are recommended for current impoundment and SDP arrangements
No Longer a Complex, Not Yet a Molecule: A Challenging Case of Nitrosyl <i>O</i>‑Hydroxide, HOON
No full textHOON might be an elusive intermediate of atmospheric
photochemical reactions of HONO or recombination of the parent nitrene
HN and molecular oxygen. However, no reliable data on HOON structure
and stability are available, and the nature of the O–O bond
is not well understood. In this study, we used high-level single-
[CCSD(T) and, CCSDTQ] and multireference [CASPT2, MR-AQCC] ab initio
calculations to determine properties of HOON: geometry, harmonic and
anharmonic vibrational frequencies, thermodynamic stability, and electronic
structure. HOON has bonding minima only in the 1A′
electronic state that correspond to cis- and trans-conformers; trans-HOON is more stable by 6.4–8.5 kJ/mol. The
O–O bond in trans-HOON is unusually long, R(O–O) = 1.89 Å, and weak, D(O–O) = 33.3 kJ/mol; however, trans-HOON
might be stable enough to be identified in cryogenic matrices. Though
the electronic structure of the NO moiety in HOON most resembles nitric
oxide, some nitrene character as well nitrosyl cation character are
also important; therefore, the current name of HOON, hydroperoxynitrene,
is misleading; instead, we propose the name “nitrosyl O-hydroxide” or “isonitrosyl hydroxide”
LEE HOON
No full text학위논문(박사)----아주대학교 일반대학원 :의학과,2007. 8ABSTRACT ⅰ
TABLE OF CONTENTS ⅲ
LIST OF FIGURES ⅴ
LIST OF TABLES ⅵ
ABBREVIATIONS ⅷ
Ⅰ. INTRODUCTION 1
A. Definition and subclassification of GDM 1
B. Screening and Diagnosis 2
C. Implications for the offspring 5
D. Implications for mother at postpartum 8
E. Purpose of the study 10
Ⅱ. SUBJECTS AND METHODS 11
A. Study design and subjects 11
B. Anthropometric measurements 14
C. Laboratory assessments 14
D. Statistical analysis 15
Ⅲ. RESULTS 17
Ⅳ. DISCUSSION 31
Ⅴ. CONCLUSIONS 36
REFERENCES 37
국문요약 50MasterPurpose: This study investigated the long-term adverse effects of maternal gestational diabetes mellitus (GDM) on cardiovascular disease (CVD) risk factors in offspring.
Subjects and Methods: A total of 298 offspring (202 offspring of GDM mothers and 96 offspring of mothers with impaired glucose tolerance [IGT]) participated in the study. CVD risk factors included elevated body mass index (BMI), skinfold thickness, body fat, blood pressure, lipid profiles, and glucose values measured with a 2 h oral glucose tolerance test.
Results: The BMI of offspring ≥ 5 years of age of GDM mothers was significantly higher than that of offspring of mothers with IGT when analysed according to age. In offspring of GDM mothers, CVD risk factors were positively correlated with age, except for lipid profiles. A significant negative relationship between age and BMI was observed in offspring of IGT mothers. The slope of the linear regression lines for BMI and fasting plasma insulin levels with age were significantly steeper for the offspring of GDM mothers than for those of IGT mothers.
Conclusions: We conclude that childhood obesity, as well as altered glucose metabolism influenced by the maternal uterine environment, is more likely with advancing years in the offspring of GDM mothers than in the offspring of IGT mothers
Initial data to vacuum Einstein equations with asymptotic expansion
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1998.Includes bibliographical references (leaf 92).by Sang Hoon Chin.Ph.D
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Separation-by-implamentation-of oxygen buried-oxide conduction mechanims
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.Includes bibliographical references (leaves 141-149).by Jee-Hoon Yap Krska.Ph.D
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A baseline-free crack detection using nonlinear acoustics
No full textA crack detection technique based on nonlinear acoustic is developed in this study. Lead Zinconate Titanate (PZT) materials are used for exciting and sensing acoustic waves. Acoustic waves at a chosen frequency are generated using an actuating PZT transducer and they travel through the target structure before being received by a sensing PZT wafer. Unlike all undamaged medium, a cracked medium exhibits acoustic nonlinearity which is manifested as harmonics and fractional subharmonics in the power spectrum of the sensed signal. Experimental results also show that the harmonic and sub-harmonic components increase in magnitude with increasing amplitude of the input signal. The proposed technique tells the presence of cracks by looking at the aforementioned two features and obviates the need for baseline data.This research was supported by Bombardier Inc.,
Pennsylvania Infrastructure Technology Alliance (PITA)
program, and Smart Infra-Structure Technology Center
(SISTeC)
Crack Detection in Metallic Structures Using Nonlinear Electro-Magnetic Impedance Measurement
No full textA nonlinear impedance method and its potential application in baseline free crack detection in metallic structures
No full text- …
