Digital Signal Processing Education: Technology and Tradition

In this paper we discuss a DSP course presented to both University students and to participants on industrial short courses. The "traditional" DSP course will typically run over one to two semesters and usually cover the fundamental mathematics of z-, Laplace and Fourier transforms, followed by the algorithm and application detail. In the course we will discuss, the use of advanced DSP software and integrated support software allow the presentation time to be greatly shortened and more focussed algorithm and application learning to be introduced. By combining the traditional lecture with the use of advanced DSP software, all harnessed by the web, we report on the objectives, syllabus, and mode of teaching

The Imprint of Cosmic Reionization on the Luminosity Function of Galaxies

The (re)ionization of hydrogen in the early universe has a profound effect on the formation of the first galaxies: by raising the gas temperature and pressure, it prevents gas from cooling into small halos, thus affecting the abundance of present-day small galaxies. Using the Galform semi-analytic model of galaxy formation, we show that two key aspects of the reionization process—when reionization takes place and the characteristic scale below which it suppresses galaxy formation—are imprinted in the luminosity function of dwarf galaxies. We focus on the luminosity function of satellites of galaxies like the Milky Way and the LMC, which is easier to measure than the luminosity function of the dwarf population as a whole. Our results show that the details of these two characteristic properties of reionization determine the shape of the luminosity distribution of satellites in a unique way, and are largely independent of the other details of the galaxy formation model. Our models generically predict a bimodality in the distribution of satellites as a function of luminosity: a population of faint satellites and population of bright satellites separated by a "valley" forged by reionization. We show that this bimodal distribution is present at high statistical significance in the combined satellite luminosity function of the Milky Way and M31. We make predictions for the expected number of satellites around LMC-mass dwarfs where the bimodality may also be measurable in future observational programs. Our preferred model predicts a total of 26 ± 10 (68% confidence) satellites brighter than M V = 0 in LMC-mass systems

Pengaruh Pemberian Asam Humat (Berasal dari Batubara Muda) melalui Daun dan Pupuk P terhadap Pertumbuhan dan Produksi Tanaman Tomat (Lycopersicum Esculentum Mill)

Tomat merupakan komoditas sayur penting yang perlu mendapat perhatian dalam penambahan produksinya, untuk menambah keterbutuhan salah satunya adalah dengan penambahan unsur hara dengan cara penambahan asam humat dan pupuk P. Asam humat merupakan senyawa organik yang mengalami proses humifikasi. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian asam humat dan pupuk P serta interaksinya terhadap pertumbuhan dan produksi tanaman tomat. Penelitian ini dilakukan di rumah kaca dan laboratorium Ilmu Tanah Fakultas Pertanian Universitas Lampung dengan menggunakan Rancangan Acak Kelompok dengan pola faktorial (2 X 5) dengan 3 ulangan. Faktor pertama pemberian pupuk P (P) yaitu p 0 = tanpa pupuk SP-36, p 1 = dengan pupuk SP-36 12 g/polybag. Faktor kedua aplikasi asam humat (H), yaitu: h 0 = 0; h 1 = 50 ; h 2 = 100 ; h 3 = 150 ; h 4 = 200 mg L -1 . Data yang diperoleh diuji dengan uji F dan dilanjutkan dengan uji ortogonal kontas.Hasil penelitian menunjukkan bahwa pertumbuhan dan produksi tanaman tomat dipengaruhi oleh pemberian asam humat dan pupuk P. Pada semua variabel pengamatan pemberian asam humat baik tanpa maupun diberi pupuk P nyata meningkatkan tinggi tanaman, jumlah daun, bobot tomat per butir, dan bobot buah per tanaman meningkat secara linier, sedangkan pada indeks kehijauan daun tidak menunjukkan perbedaan yang nyata. Interaksi antara keduanya nyata meningkatkan tinggi tanaman, jumlah daun, bobot tomat per butir, dan bobot buah per tanaman meningkat secara linier, sedangkan pada indeks kehijuan daun tidak menunjukkan perbedaan yang nyata. Penggunaan asam humat konsentrasi 150-200 mg L -1 akan efektif bila diberikan bersamaan dengan pupuk P

The XXL Survey VII: A supercluster of galaxies at z=0.43

The XXL Survey is the largest homogeneous and contiguous survey carried out with XMM-Newton. Covering an area of 50 square degrees distributed over two fields, it primarily investigates the large-scale structures of the Universe using the distribution of galaxy clusters and active galactic nuclei as tracers of the matter distribution. Given its depth and sky coverage, XXL is particularly suited to systematically unveiling the clustering of X-ray clusters and to identifying superstructures in a homogeneous X-ray sample down to the typical mass scale of a local massive cluster. A friends-of-friends algorithm in three-dimensional physical space was run to identify large-scale structures. In this paper we report the discovery of the highest redshift supercluster of galaxies found in the XXL Survey. We describe the X-ray properties of the clusters members of the structure and the optical follow-up. The newly discovered supercluster is composed of six clusters of galaxies at a median redshift z around 0.43 and distributed across approximately 30 by 15 arc minutes (10 by 5 Mpc on sky) on the sky. This structure is very compact with all the clusters residing in one XMM pointing; for this reason this is the first supercluster discovered with the XXL Survey. Spectroscopic follow-up with WHT (William Herschel Telescope) and NTT (New Technology Telescope) confirmed a median redshift of z = 0.43. An estimate of the X-ray mass and luminosity of this supercluster and of its total gas mass put XLSSC-e at the average mass range of superclusters; its appearance, with two members of equal size, is quite unusual with respect to other superclusters and provides a unique view of the formation process of a massive structure.Comment: A&A, accepted; special XXL issu

PENGARUH PENDIDIKAN KESEHATAN TERHADAP PENGETAHUAN DAN SIKAP REMAJA TENTANG PEMERIKSAAN PAYUDARA SENDIRI PADA SISWI SMK ANALIS KIMIA

Breast cancer is a breast disorder that is most feared by women. One reason for this disease can not be cured if found at an advanced stage. In fact, if detected early, this disease can actually be treated until healed. One way to detect breast cancer early is by self-awareness. Most women do not do breast self-examination due to lack of knowledge so women who do breast self-examination are still low. This study aims to determine the effect of health education on the knowledge and attitudes of adolescents about breast self-examination on Chemical Analyst Vocational School students.               This type of research used in this research is quantitative research with experimental design (quasi-experimental or quasi-experimental) with one group pre-test and post-test designs. The determination of the sample is done by purposive sampling technique with a sample size of 80 respondents. The relationship test was performed using the Wilcoxon Signed Rank Test with the significance level α <0.05.               The results of this study indicate that there are differences before and after health education is given a level of knowledge where the value of p = 0,000 is obtained, and the attitudes of adolescents obtained the value of p = 0,000.               The conclusion of this study is that health education influences the knowledge and attitudes of adolescents about breast self-examination on Chemical Analyst Vocational School students. Therefore it is very important to be able to detect early symptoms of breast cancer. It is recommended that schools always hold a health outreach to women and work closely with health workers, especially about breast self-examination

Adropin and apelin fluctuations throughout a season in professional soccer players : are they related with performance?

Myokines are likely to be involved in the whole-body metabolic adaptive changes that occur in response to regular exercise. We aimed to investigate the association of the two myokines (adropin and apelin) with physical performance in professional soccer players. To this purpose, we analyzed the fluctuations of circulating levels of both adropin and apelin in professional soccer players during a season and evaluated the possible association of these myokines with the performance level. Creatine kinase (CK) and lactate dehydrogenase (LDH) activity as well as iron, transferrin and high-sensitivity C-Reactive protein (hsCRP), ferritin, soluble transferrin receptor (sTfR), free testosterone/cortisol ratio (FTCR), total iron binding capacity (TIBC) were also determined. Fifteen male professional soccer players from an Italian Serie A team were included in this study. Regarding the results of the biochemical analyses, the patterns of changes in the biomarkers of fatigue and inflammation, i.e., HsCRP, CK and LDH reflected the effects of the training throughout the season. No significant changes were observed in adropin, while apelin exhibited variations that seem not to be related with performance. In addition, both adropin and apelin did not represent valuable strategy to assist in the performance assessment of professional soccer players