Recommendations from the Association for European Paediatric Cardiology for training in paediatric cardiac intensive care: AEPC's recommendations for European paediatric cardiology trainees The Working Group on Paediatric Cardiac Intensive Care

The following document provides a summary of the guidelines and recommendations for paediatric cardiac intensive care training as a requirement for recognition as a European paediatric cardiologist. It is therefore primarily targeting paediatric cardiology trainees in Europe, including those doctors who might wish to become experts in cardiac intensive care. These recommendations represent a frame for consistency, will evolve, and may be adapted to specific institutional requirements. They will be complemented by a learning module to be provided by our Association in the near futur

Composition-induced structural transitions in mixed rare-gas clusters

The low-energy structures of mixed Ar--Xe and Kr--Xe Lennard-Jones clusters are investigated using a newly developed parallel Monte Carlo minimization algorithm with specific exchange moves between particles or trajectories. Tests on the 13- and 19- atom clusters show a significant improvement over the conventional basin-hopping method, the average search length being reduced by more than one order of magnitude. The method is applied to the more difficult case of the 38-atom cluster, for which the homogeneous clusters have a truncated octahedral shape. It is found that alloys of dissimilar elements (Ar--Xe) favor polytetrahedral geometries over octahedra due to the reduced strain penalty. Conversely, octahedra are even more stable in Kr--Xe alloys than in Kr_38 or Xe_38, and they show a core-surface phase separation behavior. These trends are indeed also observed and further analysed on the 55-atom cluster. Finally, we correlate the relative stability of cubic structures in these clusters to the glassforming character of the bulk mixtures.Comment: 14 pages, 8 figures, 5 tables PRB vol 70, in pres

Akran Öğretimi ve Mikro Öğretimin Fizik Öğretmen Adaylarının Öğretme Becerilerine Etkileri

This study examines the effects of peer teaching and microteaching on pre-service physics teachers’ teaching skills. Peer and microteaching applications are conducted with thirty-nine pre-service physics teachers during the academic years 2005–2006 and 2006–2007. The data were collected through the “Teacher Performance Evaluation Form” which was particulary developed for this study. The findings of the study indicated that peer teaching/microteaching applications positively contributed to the teaching skills of the pre-service physics teachers.Bu çalışmada, akran öğretimi ve mikro öğretim yönteminin fizik öğretmen adaylarının öğretme becerileri üzerindeki etkileri araştırılmıştır.Akran ve mikro öğretim uygulamaları 2005– 2006 ve 2006–2007 akademik yıllarında 39 katılımcıdan oluşan grupta uygulanmıştır. Veriler, bu çalışma için geliştirilmiş “Öğretmen Performansı Değerlendirme Ölçeği” ile elde edilmiştir. Çalışmadan elde edilen bulgular, akran ve mikro öğretim yönteminin fizik öğretmen adaylarının öğretme becerilerine olumlu yönde katkı sağladığını göstermektedir

KOMPLEKSITAS EVALUASI SISTEM INFORMASI ELEKTRONIC GOVERNMENT DITINJAU DARI SUDUT PANDANG PUBLIK

Bidang e-government berkembang dengan pesat dibandingkan dengan  bidang penelitian lainnya. Seperti evaluasi semua sistem informasi lainnya, evaluasi e-government dalam teori dan praktik terbukti penting tetapi kompleks. Kompleksitas evaluasi sebagian besar disebabkan oleh berbagai perspektif yang terlibat, kesulitan mengukur manfaat, dan konteks sosial dan teknis penggunaan. Pentingnya evaluasi e-government adalah karena investasi yang sangat besar dari pemerintah dalam memberikan layanan e-government, dan laju pertumbuhan yang besar dalam bidang e-government. Namun, terlepas dari pentingnya evaluasi layanan e-government, literatur menunjukkan bahwa evaluasi e-government masih merupakan area yang belum matang dalam hal pengembangan dan manajemen. Pekerjaan ini adalah bagian dari upaya penelitian yang bertujuan untuk mengembangkan kerangka evaluasi holistik untuk sistem e-government. Tujuan utama dari makalah ini adalah untuk menyelidiki perspektif publik dalam mengevaluasi layanan e-government, dan menyajikan serangkaian faktor evaluasi yang memengaruhi pemanfaatan warga terhadap layanan e-government. Faktor-faktor evaluasi ini dapat berfungsi sebagai bagian dari kerangka evaluasi e-government. Selain itu, faktor-faktor evaluasi juga dapat digunakan sebagai sarana memberikan umpan balik yang berharga untuk perencanaan inisiatif e-government di masa depan

Optimasi Hidrolika Lumpur Pemboran Menggunakan Api Modified Power Law Pada Hole 8½ Sumur X Lapangan Mir

Salah satu faktor utama yang perlu diperhatikan dalam keberhasilan suatu operasi pemboran adalah pembersihan lubang bor dari serbuk bor selama proses pemboran berlangsung. Perencanaan dan kontrol yang baik dapat mempercepat operasi pemboran dan secara keseluruhan dapat menghemat biaya. Sistem hidrolika lumpur pemboran berpengaruh terhadap pembersihan lubang bor, lumpur yang keluar dari nozzle dengan kecepatan tinggi membantu pahat menembus batuan serta mengangkat cutting ke permukaan. Analisis hidrolika lumpur dan hidrolika pahat pada sumur X dilakukan pada pelaksanaan pengeboran hole 8½dimulai dari kedalaman 2093 ft – 5555 ft. Analisis ini dilakukan untuk mengetahui kehilangan tekanan sirkulasi lumpur pemboran serta untuk mengoptimalkan laju alir sirkulasi dan diameter nozzle pahat untuk mengoptimalkan pengangkatan cutting. Metode yang dipergunakan dalam analisis lumpur pemboran adalah metode API modified power law dimana metode tersebut merupakan penyempurnaan dari metode power law dan direkomendasikan untuk dipergunakan oleh API. Sedangkan metode yang digunakan dalam mengevaluasi keberhasilan hidrolika pahat dilakukan dengan menggunakan metode Bit Hydraulic Horse Power (BHHP). Metode BHHP sesuai digunakan untuk pemboran vertical dengan pertimbangan gaya gravitasi dan cenderung aliran yang digunakan laminer. Berdasarkan hasil studi kasus diperoleh bahwa pengangkatan cutting akan sempurna apabila aliran di annulus laminar, total kehilangan tekanan adalah 842.08 psi dimana kehilangan tekanan yang terjadi pada Surface Connection 6.312 psi, Pada Drill String 523.191 psi, Pada Annulus 169.305 psi, Pada Bit 136.955 psi. Laju alir aktual 502 gpm dengan diameter nozzle 6x15 tidak optimal, maka laju alir dioptimasikan menjadi 440 gpm dengan diameter nozzle 6x10

The effect of heterogeneity on hypergraph contagion models

The dynamics of network social contagion processes such as opinion formation and epidemic spreading are often mediated by interactions between multiple nodes. Previous results have shown that these higher-order interactions can profoundly modify the dynamics of contagion processes, resulting in bistability, hysteresis, and explosive transitions. In this paper, we present and analyze a hyperdegree-based mean-field description of the dynamics of the SIS model on hypergraphs, i.e. networks with higher-order interactions, and illustrate its applicability with the example of a hypergraph where contagion is mediated by both links (pairwise interactions) and triangles (three-way interactions). We consider various models for the organization of link and triangle structure, and different mechanisms of higher-order contagion and healing. We find that explosive transitions can be suppressed by heterogeneity in the link degree distribution, when links and triangles are chosen independently, or when link and triangle connections are positively correlated when compared to the uncorrelated case. We verify these results with microscopic simulations of the contagion process and with analytic predictions derived from the mean-field model. Our results show that the structure of higher-order interactions can have important effects on contagion processes on hypergraphs.Comment: 14 pages, 10 figure