Prinsipiële kritiek op die sosiale studies.

Op grond van die skrywer se onlangse navorsing oor ,,’n Historiesprinsipiële beskouing oor die opkoms, die veld van ondersoek en die betekenis van die Opvoedkundige Sosiologie, met spesiale verwysing na die Laerskool” , wil hy die leser die een en ander omtrent sy bevindinge meedeel

Enkele grondleggende gedagtes oor die sosiale studie-leergang vir die Transvaalse laerskole

In ’n vorige artikel is op grond van ’n samevattende prinsipieel-kritiese beskouing ’n antitese van die gangbare opvatting en toepassing van die Sosiale Studies van Amerika en Engeland gegee

Uiteensetting omtrent die behandeling van die jeugoortreders in Suid-Afrika1)

Daar heers vandag in Suid-Afrika, maar trouens oor die hele wêreld intense belangstelling in die probleem van jeugmisdaad en alles wat daarmee saamhang. Belangstelling wat wissel van sentimentele nuuskierigheid tot eerlike en diepgaande wetenskaplike ondersoek

Christelike onderwys- ’n Beknopte opsomming van die besprekinge op die A.C.B. Konferensie.

Op Dinsdag 25 en Woensdag 26 Januarie 1.1. is ’n konferensie van die Afrikaanse Calvinistiese Beweging in die Totius-gedenksaal op Potchefstroom onder voorsitterskap van prof. D. J. van Rooy gehou. Ongeveer 200 persone oor die lengte en breedte van Suid-Afrika, en selfs uit Suidwes-Afrika, die Rhodesiës en Kenia was teenwoordig

Op pad na ’n nuwe bedieningstruktuur: ’n Analise van die gemeente as deel van hierdie proses

Heading toward new ministerial structures: A situationanalysis of the local congregationAccording to 2 Corinthians 3:18 the church has the instruction to be transformed so to become part of the body of Christ more and more. But it does happen thatthe church stagnate in its ministry. The purpose of the subject Church Growth is to adress this problem. One phase of this subject is the analysis of the situation inthe local church. The purpose of the analysis is to systematically look at the situation in a congregation of the church and then to identify problems that stand in theway of fulfilling of the Biblical command. The situation- analysis can not be done at random, but must be planned carefully. This study gives attention to a plannedsituation-analysis of the local church

Methanol masers : Reliable tracers of the early stages of high-mass star formation

The GLIMPSE and MSX surveys have been used to examine the mid-infrared properties of a statistically complete sample of 6.7 GHz methanol masers. The GLIMPSE point sources associated with methanol masers are clearly distinguished from the majority, typically having extremely red mid-infrared colors, similar to those expected of low-mass class 0 young stellar objects. The intensity of the GLIMPSE sources associated with methanol masers is typically 4 magnitudes brighter at 8.0 micron than at 3.6 micron. Targeted searches towards GLIMPSE point sources with [3.6]-[4.5] > 1.3 and an 8.0 micron magnitude less than 10 will detect more than 80% of class II methanol masers. Many of the methanol masers are associated with sources within infrared dark clouds (IRDC) which are believed to mark regions where high-mass star formation is in its very early stages. The presence of class II methanol masers in a significant fraction of IRDC suggests that high-mass star formation is common in these regions. Different maser species are thought to trace different evolutionary phases of the high-mass star formation process. Comparison of the properties of the GLIMPSE sources associated with class II methanol masers and other maser species shows interesting trends, consistent with class I methanol masers tracing a generally earlier evolutionary phase and OH masers tracing a later evolutionary phase.Comment: 45 pages, 19 figures, accepted for publication in Ap

Feedback from activity trackers improves daily step count after knee and hip arthroplasty: A randomized controlled trial

Background: Commercial wrist-worn activity monitors have the potential to accurately assess activity levels and are being increasingly adopted in the general population. The aim of this study was to determine if feedback from a commercial activity monitor improves activity levels over the first 6 weeks after total hip arthroplasty (THA) or total knee arthroplasty (TKA). Methods: One hundred sixty-three consecutive subjects undergoing primary TKA or THAwere randomized into 2 groups. Subjects received an activity tracker with the step display obscured 2 weeks before surgery and completed patient-reported outcome measures (PROMs). On day 1 after surgery, participants were randomized to either the “feedback (FB) group” or the “no feedback (NFB) group.” The FB group was able to view their daily step count and was given a daily step goal. Participants in the NFB group wore the device with the display obscured for 2 weeks after surgery, after which time they were also able to see their daily step count but did not receive a formal step goal. The mean daily steps at 1, 2, 6 weeks, and 6 months were monitored. At 6 months after surgery, subjects repeated PROMs and daily step count collection. Results: Of the 163 subjects, 95 underwent THA and 68 underwent TKA. FB subjects had a significantly higher (P \u3c .03) mean daily step count by 43% in week 1, 33% in week 2, 21% in week 6, and 17% at 6 months, compared with NFB. The FB subjects were 1.7 times more likely to achieve a mean 7000 steps per day than the NFB subjects at 6 weeks after surgery (P ¼ .02). There was no significant difference between the groups in PROMs at 6 months. Ninety percent of FB and 83% of NFB participants reported that they were satisfied with the results of the surgery (P ¼ .08). At 6 months after surgery, 70% of subjects had a greater mean daily step count compared with their preoperative level. Conclusion: Subjects who received feedback from a commercial activity tracker with a daily step goal had significantly higher activity levels after hip and knee arthroplasty over 6 weeks and 6 months, compared with subjects who did not receive feedback in a randomized controlled trial. Commercial activity trackers may be a useful and effective adjunct after arthroplasty