Results 21 to 30 of about 5,990,468 (300)

Infection-acquired versus vaccine-acquired immunity in an SIRWS model [PDF]

open access: yes, 2017
Despite high vaccine coverage, pertussis has re-emerged as a public health concern in many countries. One hypothesis posed for re-emergence is the waning of immunity.
Campbell, Patricia T   +4 more
core   +2 more sources

The Duration of New Job Matches in East and West Germany [PDF]

open access: yes, 2004
This study compares the duration of new job matches in the east and west German labour market that formed between the start of the German Economic, Monetary and Social Union in July 1990 and December 2000. The study relies on job duration data drawn from
Wolff, Joachim
core   +7 more sources

Screen use and sleep duration and quality at 15 years old: Cohort study

open access: yesSleep Medicine: X, 2023
Objective/background: The evidence on the association between screen use and sleep of adolescents is mainly based on studies about time watching television, with a few examining time using computers, videogames, and mobile devices.
Priscila Echevarria   +5 more
doaj   +1 more source

Unstressed Vowels in German Learner English: An Instrumental Study [PDF]

open access: yes, 2014
This study investigates the production of vowels in unstressed syllables by advanced German learners of English in comparison with native speakers of Standard Southern British English. Two acoustic properties were measured: duration and formant structure.
Abercrombie   +66 more
core   +2 more sources

Penerapan Metode I-CHAID Menggunakan SMOTE pada Data Tidak Seimbang untuk Klasifikasi Durasi Studi Mahasiswa

open access: yesJambura Journal of Mathematics
The issue of delayed graduation is often encountered in various universities, including in the Statistics Study Program at Universitas Negeri Gorontalo, for graduates between 2018 and 2023. Among them, 162 students (76.5%) experienced delayed graduation,
Umar D. Akor   +2 more
doaj   +1 more source

Spongiform Encephalopathy of Long Duration: A Family Study [PDF]

open access: yesCanadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques, 1980
SUMMARY:Seven members of a family succumbed to prolonged dementing illnesses. In two, whose dementia lasted 10 years, spongiform encephalopathy was found at autopsy. This duration of illness has not been a feature in other instances of familial Creutzfeldt-Jakob disease.
G P, Rice   +4 more
openaire   +2 more sources

COMPARATIVE ANALYSIS OF RANDOM FOREST AND SUPPORT VECTOR CLASSIFIER FOR PREDICTING STUDENTS’ ON-TIME GRADUATION

open access: yesPilar Nusa Mandiri
On-time graduation is one of the key indicators of educational quality in higher education. The influencing factors range from students’ internal issues and academic abilities to institutional policies.
Nurus Sarifatul Ngaeni
doaj   +1 more source

The Associations of Trajectory of Sleep Duration and Inflammation with Hypertension: A Longitudinal Study in China

open access: yesNature and Science of Sleep, 2021
Lili Huang,1,* Zichong Long,1,* Jiajun Lyu,1 Yiting Chen,1 Rong Li,1 Yanlin Wang,2 Shenghui Li1,3 1School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China; 2Prenatal Diagnosis Department ...
Huang L   +6 more
doaj  

The relationship between the development of social competence and sleep in infants: a longitudinal study

open access: yesChild and Adolescent Psychiatry and Mental Health, 2018
Background Many reports argue that sleep is important for children’s health, learning, and academic performance. The purpose of this longitudinal study was to examine the association between sleep and the development of social competence in infants ...
Etsuko Tomisaki   +10 more
doaj   +1 more source

Specific features of joint ultrasound study in patients with rheumatoid arthritis [PDF]

open access: yesТерапевтический архив, 2017
Aim. To study the specific features of joint ultrasound readings in rheumatoid arthritis (RA) in relation to its duration. Subjects and methods. A total of 162 patients (mean age, 43.54±11.1 years) with a mean RA duration of 3.22±3.13 years were examined.
E B Komarova   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy