Scheduling the Belgian soccer league.

Scheduling; International; Theory;

Clinical aspects of cervical insufficiency

Fetal loss is a painful experience. A history of second or early third trimester fetal loss, after painless dilatation of the cervix, prolapse or rupture of the membranes, and expulsion of a live fetus despite minimal uterine activity, is characteristic for cervical insufficiency. In such cases the risk of recurrence is high, and a policy of prophylactic cerclage may be safer than one of serial cervical length measurements followed by cerclage, tocolysis and bed rest in case of cervical shortening or dilatation. In low risk cases, however, prophylactic cerclage is not useful. There is a need for more basic knowledge of cervical ripening, objective assessment of cervical visco-elastic properties, and randomized controlled trials of technical aspects of cervical cerclage (e.g. suturing technique)

How many black holes fit on the head of a pin?

The Bekenstein-Hawking entropy of certain black holes can be computed microscopically in string theory by mapping the elusive problem of counting microstates of a strongly gravitating black hole to the tractable problem of counting microstates of a weakly coupled D-brane system, which has no event horizon, and indeed comfortably fits on the head of a pin. We show here that, contrary to widely held beliefs, the entropy of spherically symmetric black holes can easily be dwarfed by that of stationary multi-black-hole ``molecules'' of the same total charge and energy. Thus, the corresponding pin-sized D-brane systems do not even approximately count the microstates of a single black hole, but rather those of a zoo of entropically dominant multicentered configurations.Comment: 4 pages, fourth prize in the Gravity Research Foundation Essay competition 200

The Panchromatic High-Resolution Spectroscopic Survey of Local Group Star Clusters - I. General Data Reduction Procedures for the VLT/X-shooter UVB and VIS arm

Our dataset contains spectroscopic observations of 29 globular clusters in the Magellanic Clouds and the Milky Way performed with VLT/X-shooter. Here we present detailed data reduction procedures for the VLT/X-shooter UVB and VIS arm. These are not restricted to our particular dataset, but are generally applicable to different kinds of X-shooter data without major limitation on the astronomical object of interest. ESO's X-shooter pipeline (v1.5.0) performs well and reliably for the wavelength calibration and the associated rectification procedure, yet we find several weaknesses in the reduction cascade that are addressed with additional calibration steps, such as bad pixel interpolation, flat fielding, and slit illumination corrections. Furthermore, the instrumental PSF is analytically modeled and used to reconstruct flux losses at slit transit and for optimally extracting point sources. Regular observations of spectrophotometric standard stars allow us to detect instrumental variability, which needs to be understood if a reliable absolute flux calibration is desired. A cascade of additional custom calibration steps is presented that allows for an absolute flux calibration uncertainty of less than ten percent under virtually every observational setup provided that the signal-to-noise ratio is sufficiently high. The optimal extraction increases the signal-to-noise ratio typically by a factor of 1.5, while simultaneously correcting for resulting flux losses. The wavelength calibration is found to be accurate to an uncertainty level of approximately 0.02 Angstrom. We find that most of the X-shooter systematics can be reliably modeled and corrected for. This offers the possibility of comparing observations on different nights and with different telescope pointings and instrumental setups, thereby facilitating a robust statistical analysis of large datasets.Comment: 22 pages, 18 figures, Accepted for publication in Astronomy & Astrophysics; V2 contains a minor change in the abstract. We note that we did not test X-shooter pipeline versions 2.0 or later. V3 contains an updated referenc

Analisis Pengaruh Perilaku Masyarakat Terhadap Kualitas Air Baku dan Air Minum PDAM Tirta Handayani Gunung Kidul

PDAM Tirta Handayani merupakan perusahaan penyedia dan penyalur air pada masyarakat yangterletak di Gunung Kidul.. Kualitas air baku diketahui dengan membandingkan nilai yang ditetapkan PeraturanPemerintah Nomor 22 tahun 2021dan kualitas air minum berdasarkan nilai dari Peraturan Menteri KesehatanNo 492 tahun 2010. Hasil uji air baku untuk IPA Baron dan Bribin semua parameternya masuk kelas I yangperuntukannya sebagai air baku air minum. Hasil Uji kualitas air minum IPA Baron dan Bribin menunjukkanbahwa parameter fisik dan mikrobiologi melebihi kadar yang seharusnya yaitu nilai E.Coli dan Total Coliform0 pada daerah yang diuji nilai tertinggi mencapai 1200. Perilaku masyarakat sangat berpengaruh pada kualitasair baku dimana warga Gunung kidul sering mengubur jasad hewan dalam tanah sehingga bakteri dari hewanyang dikubur itu bisa mempengaruhi kualitas tanah sekitarnya. Air PDAM yang diterima masyarakat masihberbau amis sehingga mereka memasak airnya lagi untuk menghilangkan bau untuk dikonsumsi tiap hari