Leertechnologie in de lage landen

Op het terrein van onderwijs en ICT investeren onderwijsinstellingen, bedrijven, brancheorganisaties en overheden in het bewerkstelligen van leertechnologie-afspraken. Het doel van die gezamenlijke inspanning is om het onderwijs te kunnen verbeteren en efficiënter te maken. Gedeelde opvattingen, vastgelegd in specificaties en standaarden, maken uitwisseling van gegevens mogelijk tussen uiteenlopende systemen. Dat biedt grote kansen voor onderwijsvernieuwing. Basisgegevens hoeven slechts op één plek onderhouden te worden, maar zijn toch voor iedere instelling bruikbaar: eenmaal gemaakte lesmaterialen kunnen in verschillende leeromgevingen worden ingezet, studenten kunnen zich flexibel inschrijven voor cursussen aan verschillende instellingen terwijl hun studievoortgang zonder probleem wordt geregistreerd. Deze processen zijn essentiële voorwaarden voor een duurzame ontwikkeling van e-learning in de Lage Landen. Als samenwerkingsorganisatie voor het hoger onderwijs in Nederland neemt SURF deel aan de mars naar standaardisatie binnen de leertechnologie. De SURF SiX expertisegroep, een Special Interest Group van SURF, onderneemt activiteiten om realisatie en gebruik van leertechnologie-afspraken te bevorderen die voor het Nederlandse hoger onderwijs bruikbaar en nuttig zijn en die blijvende aansluiting van Nederland bij internationale e-learningontwikkelingen garanderen. Met dit boek geeft SURF SiX een brede groep onderwijsontwikkelaars en geïnformeerde eindgebruikers inzicht in de huidige Nederlandse situatie op het gebied van leertechnologie-afspraken. Daarnaast wil dit boek laten zien dat leertechnologiespecificaties en standaarden meerwaarde hebben.Stichting Sur

Protein type, protein dose, and age modulate dietary protein digestion and phenylalanine absorption kinetics and plasma phenylalanine availability in humans

This is the final version. Available from the publisher via the DOI in this record.BACKGROUND: Dietary protein ingestion stimulates muscle protein synthesis by providing amino acids to the muscle. The magnitude and duration of the postprandial increase in muscle protein synthesis rates are largely determined by dietary protein digestion and amino acid absorption kinetics. OBJECTIVE: We assessed the impact of protein type, protein dose, and age on dietary protein digestion and amino acid absorption kinetics in vivo in humans. METHODS: We included data from 18 randomized controlled trials with a total of 602 participants [age: 53 ± 23 y; BMI (kg/m2): 24.8 ± 3.3] who consumed various quantities of intrinsically l-[1-13C]-phenylalanine-labeled whey (n = 137), casein (n = 393), or milk (n = 72) protein and received intravenous infusions of l-[ring-2H5]-phenylalanine, which allowed us to assess protein digestion and phenylalanine absorption kinetics and the postprandial release of dietary protein-derived phenylalanine into the circulation. The effect of aging on these processes was assessed in a subset of 82 young (aged 22 ± 3 y) and 83 older (aged 71 ± 5 y) individuals. RESULTS: A total of 50% ± 14% of dietary protein-derived phenylalanine appeared in the circulation over a 5-h postprandial period. Casein ingestion resulted in a smaller (45% ± 11%), whey protein ingestion in an intermediate (57% ± 10%), and milk protein ingestion in a greater (65% ± 13%) fraction of dietary protein-derived phenylalanine appearing in the circulation (P < 0.001). The postprandial availability of dietary protein-derived phenylalanine in the circulation increased with the ingestion of greater protein doses (P < 0.05). Protein digestion and phenylalanine absorption kinetics were attenuated in older when compared with young individuals, with 45% ± 10% vs. 51% ± 14% of dietary protein-derived phenylalanine appearing in the circulation, respectively (P = 0.001). CONCLUSIONS: Protein type, protein dose, and age modulate dietary protein digestion and amino acid absorption kinetics and subsequent postprandial plasma amino acid availability in vivo in humans. These trials were registered at clinicaltrials.gov as NCT00557388, NCT00936039, NCT00991523, NCT01317511, NCT01473576, NCT01576848, NCT01578590, NCT01615276, NCT01680146, NCT01820975, NCT01986842, and NCT02596542, and at http://www.trialregister.nl as NTR3638, NTR3885, NTR4060, NTR4429, and NTR4492

Engagement of atrial fibrillation patients with the AF-EduApp, a new mobile application to support AF management

IntroductionA multidisciplinary approach is needed for the management of atrial fibrillation (AF) in which the patient has a central role. Smart devices create opportunities to improve AF management. This paper aimed to evaluate the in-house developed AF-EduApp application on its usability, satisfaction, and communication effectiveness with the care team.MethodsDuring a multicenter, prospective randomized controlled trial, 153 AF patients were included in the AF-EduApp study, with a minimum follow-up of 12 months and a maximum follow-up of 15 months if taking oral anticoagulation (OAC). The AF-EduApp contains six main modules: Questionnaires, Education, Measurement data entry, Medication overview with reminders, Appointments, and Communication with the care team. The App focuses on four main goals: (1) to improve AF knowledge, (2) to increase self-care capabilities, (3) electronic monitoring to improve therapy adherence to OAC, and (4) communication with the care team. Patients unable to use the AF-EduApp were assigned to a no-App control group (n = 41) without intervention comparable to the standard care group (SC, n = 346) of the AF-EduCare study.ResultsA total of 152 patients effectively used the App during a mean follow-up of 386.8 ± 108. 1 days (one included patient could not install the application due to an iPhone from the United States). They opened the application on average on 130.1 ± 144.7 days. Of the 109 patients still in follow-up after 12 months (i.e. patients who did not withdraw and on OAC), 90 patients (82.6%) actively used the application at least one day in the next 41 days. The Measurement module was the most used, with a median of used days over the total available days of 6.4%. A total of 75 App patients (49.3%) asked questions, mostly clinical-related questions (e.g. medication use, or actionability on clinical entered parameters). A mean score of 8.1 ± 1.7 about the “perceived quality of follow-up in the past year” was given by the App ITT patients, compared to a score of 7.7 ± 2.0 by the SC group (P = .072). Patients who used the App were more attracted to future follow-up with an application compared to patients who would be capable of using the application of the SC group (31.6% vs. 12.5%; P &lt; .001).ConclusionThis study showed a positive attitude towards using a mobile application, with AF patients using the application one-third of the available days. Patients used the App most for entering measured parameters, and to contact the care team

Rijkere leerervaringen met Rich Media

Meer en meer universiteiten en hogescholen gaan over tot het opnemen en online plaatsen van colleges en presentaties. Vaak wordt daarbij volstaan met het volledig opnemen en zonder verdere bewerking online plaatsen. Het nadeel hiervan is dat de opnames de student niet aanzetten tot actief studeergedrag. En dat is een gemiste kans omdat activering een positief effect heeft op de motivatie van studenten en via die weg op de hoeveelheid en de kwaliteit van de zelfstudie van studenten (Van Dijk, Van den Berg, & Van Keulen, 1999). In dit artikel bespreken wij een aantal verrijkte weblecture varianten waaruit onderwijsontwerpers en docenten kunnen kiezen en geven we aanknopingspunten bij dat keuzeproces

Precision experiments on a comanipulated robotic system for use in retinal surgery

Retinal Vein Occlusion (RVO) is a common retinal vascular disorder which may cause severe loss of vision. To assist the surgeon in treating this condition, we developed a robotic system for retinal surgery. The system enhances the surgeons precision by using comanipulation control schemes. We developed a new testing device to simulate the conditions encountered during retinal procedures. Initial tests conducted with this device proof the enhanced precision when using the robotic system.status: publishe

Table1_Engagement of atrial fibrillation patients with the AF-EduApp, a new mobile application to support AF management.docx

IntroductionA multidisciplinary approach is needed for the management of atrial fibrillation (AF) in which the patient has a central role. Smart devices create opportunities to improve AF management. This paper aimed to evaluate the in-house developed AF-EduApp application on its usability, satisfaction, and communication effectiveness with the care team.MethodsDuring a multicenter, prospective randomized controlled trial, 153 AF patients were included in the AF-EduApp study, with a minimum follow-up of 12 months and a maximum follow-up of 15 months if taking oral anticoagulation (OAC). The AF-EduApp contains six main modules: Questionnaires, Education, Measurement data entry, Medication overview with reminders, Appointments, and Communication with the care team. The App focuses on four main goals: (1) to improve AF knowledge, (2) to increase self-care capabilities, (3) electronic monitoring to improve therapy adherence to OAC, and (4) communication with the care team. Patients unable to use the AF-EduApp were assigned to a no-App control group (n = 41) without intervention comparable to the standard care group (SC, n = 346) of the AF-EduCare study.ResultsA total of 152 patients effectively used the App during a mean follow-up of 386.8 ± 108. 1 days (one included patient could not install the application due to an iPhone from the United States). They opened the application on average on 130.1 ± 144.7 days. Of the 109 patients still in follow-up after 12 months (i.e. patients who did not withdraw and on OAC), 90 patients (82.6%) actively used the application at least one day in the next 41 days. The Measurement module was the most used, with a median of used days over the total available days of 6.4%. A total of 75 App patients (49.3%) asked questions, mostly clinical-related questions (e.g. medication use, or actionability on clinical entered parameters). A mean score of 8.1 ± 1.7 about the “perceived quality of follow-up in the past year” was given by the App ITT patients, compared to a score of 7.7 ± 2.0 by the SC group (P = .072). Patients who used the App were more attracted to future follow-up with an application compared to patients who would be capable of using the application of the SC group (31.6% vs. 12.5%; P ConclusionThis study showed a positive attitude towards using a mobile application, with AF patients using the application one-third of the available days. Patients used the App most for entering measured parameters, and to contact the care team.</p

Loss of sdhb in zebrafish larvae recapitulates human paraganglioma characteristics

Pheochromocytomas and paragangliomas (PPGLs) caused by mutations in the B-subunit of the succinate dehydrogenase (SDHB) have the highest metastatic rate among PPGLs, and effective systemic therapy is lacking. To unravel underlying pathogenic mechanisms, and to evaluate therapeutic strategies, suitable in vivo models are needed. The available systemic Sdhb knock-out mice cannot model the human PPGL phenotype: Heterozygous Sdhb mice lack a disease phenotype, and homozygous Sdhb mice are embryonically lethal. Using CRISPR/cas9 technology, we introduced a protein-truncating germline lesion into the zebrafish sdhb gene. Heterozygous sdhb mutants were viable and displayed no obvious morphological or developmental defects. Homozygous sdhb larvae were viable, but exhibited a decreased lifespan. Morphological analysis revealed incompletely or non-inflated swim bladders in homozygous sdhb mutants at day 6. Although no differences in number and ultrastructure of the mitochondria were observed. Clear defects in energy metabolism and swimming behavior were observed in homozygous sdhb mutant larvae. Functional and metabolomic analyses revealed decreased mitochondrial complex 2 activity and significant succinate accumulation in the homozygous sdhb mutant larvae, mimicking the metabolic effects observed in SDHB-associated PPGLs. This is the first study to present a vertebrate animal model that mimics metabolic effects of SDHB-associated PPGLs. This model will be useful in unraveling pathomechanisms behind SDHB-associated PPGLs. We can now study the metabolic effects of sdhb disruption during different developmental stages and develop screening assays to identify novel therapeutic targets in vivo. Besides oncological syndromes, our model might also be useful for pediatric mitochondrial disease caused by loss of the SDHB gene