Pengaruh Keterampilan Mengajar Guru Terhadap Hasil Belajar Siswa SMA Se-kota Malang Yang Di Kontrol Dengan Variasi Sumber Belajar

Penelitian ini bertujuan untuk menguji pengaruh keterampilan mengajar guru terhadap hasil belajar siswa SMA Negeri se-Kota Malang yang di kontrol dengan variasi sumber belajar. Penelitian ini menggunakan pendekatan kuantitatif. Populasi dalam penelitian adalah seluruh guru ekonomi Sekolah Menengah Atas Negeri se-kota Malang. Proses penarikan sampel menggunakan teknik simpel random sampling. Proses pengumpulan data menggunakan kuesioner, observasi dan dokumentasi. Uji Lanjutan untuk analisis data menggunakan analisis varian dua jalur dengan interaksi dan dilakukan uji lanjutan uji beda t-test.Temuan penelitian menunjukkan bahwa (1) terdapat perbedaan yang signifikan antara hasil belajar siswa yang diajarkan oleh guru dengan keterampilan mengajar tinggi dengan hasil belajar siswa yang diajarkan guru berketerampilan mengajar rendah, (2) terdapat perbedaan yang signifikan antara hasil belajar siswa yang diajarkan oleh guru dengan sumber belajar bervariasi dengan hasil belajar siswa yang diajarkan oleh guru yang menggunakan sumber belajar tidak bervariasi, (3) tidak terdapat perbedaan yang signifikan antara hasil belajar siswa yang diajarkan oleh guru dengan keterampilan mengajar tinggi menggunakan sumber belajar bervariasi dibedakan dengan hasil belajar siswa yang diajarkan oleh guru dengan keterampilan mengajar rendah menggunakan sumber belajar bervariasi, (4) terdapat perbedaan yang signifikan antara hasil belajar siswa yang diajarkan oleh guru dengan keterampilan mengajar tinggi menggunakan sumber belajar tidak bervariasi jika dibedakan dengan hasil belajar siswa yang diajarkan guru dengan keterampilan mengajar rendah menggunakan sumber belajar tidak bervariasi, (5) tidak terdapat perbedaan yang signifikan antara hasil belajar siswa yang diajarkan oleh guru yang menggunakan sumber belajar bervariasi dengan keterampilan mengajar tinggi jika dibedakan dengan hasil belajar siswa dari guru yang menggunakan sumber belajar tidak bervariasi berketerampilan mengajar tinggi, (6) terdapat perbedaan yang signifikan antara hasil belajar siswa yang diajarkan oleh guru yang menggunakan sumber belajar bervariasi dengan keterampilan mengajar rendah jika dibedakan dengan hasil belajar siswa dari guru yang menggunakan sumber belajar tidak bervariasi berketerampilan mengajar rendah, dan (7) keterampilan megajar guru berinteraksi dengan variasi sumber belajar dan secara bersama-sama berpengaruh signifikan terhadap hasil belajar siswa

Measures of galaxy dust and gas mass with Herschel photometry and prospects for ALMA

(Abridged) Combining the deepest Herschel extragalactic surveys (PEP, GOODS-H, HerMES), and Monte Carlo mock catalogs, we explore the robustness of dust mass estimates based on modeling of broad band spectral energy distributions (SEDs) with two popular approaches: Draine & Li (2007, DL07) and a modified black body (MBB). As long as the observed SED extends to at least 160-200 micron in the rest frame, M(dust) can be recovered with a >3 sigma significance and without the occurrence of systematics. An average offset of a factor ~1.5 exists between DL07- and MBB-based dust masses, based on consistent dust properties. At the depth of the deepest Herschel surveys (in the GOODS-S field) it is possible to retrieve dust masses with a S/N>=3 for galaxies on the main sequence of star formation (MS) down to M(stars)~1e10 [M(sun)] up to z~1. At higher redshift (z<=2) the same result is achieved only for objects at the tip of the MS or lying above it. Molecular gas masses, obtained converting M(dust) through the metallicity-dependent gas-to-dust ratio delta(GDR), are consistent with those based on the scaling of depletion time, and on CO spectroscopy. Focusing on CO-detected galaxies at z>1, the delta(GDR) dependence on metallicity is consistent with the local relation. We combine far-IR Herschel data and sub-mm ALMA expected fluxes to study the advantages of a full SED coverage.Comment: Accepted for publication in Astronomy and Astrophysics. Some figures have degraded quality for filesize reason

Simultaneous Multiwavelength Observations of Magnetic Activity in Ultracool Dwarfs. IV. The Active, Young Binary NLTT 33370 AB (=2MASS J13142039+1320011)

We present multi-epoch simultaneous radio, optical, H{\alpha}, UV, and X-ray observations of the active, young, low-mass binary NLTT 33370 AB (blended spectral type M7e). This system is remarkable for its extreme levels of magnetic activity: it is the most radio-luminous ultracool dwarf (UCD) known, and here we show that it is also one of the most X-ray luminous UCDs known. We detect the system in all bands and find a complex phenomenology of both flaring and periodic variability. Analysis of the optical light curve reveals the simultaneous presence of two periodicities, 3.7859 $\pm$ 0.0001 and 3.7130 $\pm$ 0.0002 hr. While these differ by only ~2%, studies of differential rotation in the UCD regime suggest that it cannot be responsible for the two signals. The system's radio emission consists of at least three components: rapid 100% polarized flares, bright emission modulating periodically in phase with the optical emission, and an additional periodic component that appears only in the 2013 observational campaign. We interpret the last of these as a gyrosynchrotron feature associated with large-scale magnetic fields and a cool, equatorial plasma torus. However, the persistent rapid flares at all rotational phases imply that small-scale magnetic loops are also present and reconnect nearly continuously. We present an SED of the blended system spanning more than 9 orders of magnitude in wavelength. The significant magnetism present in NLTT 33370 AB will affect its fundamental parameters, with the components' radii and temperatures potentially altered by ~+20% and ~-10%, respectively. Finally, we suggest spatially resolved observations that could clarify many aspects of this system's nature.Comment: emulateapj, 22 pages, 15 figures, ApJ in press; v2: fixes low-impact error in Figure 15; v3: now in-pres

The PEP Survey: Infrared Properties of Radio-Selected AGN

By exploiting the VLA-COSMOS and the Herschel-PEP surveys, we investigate the Far Infrared (FIR) properties of radio-selected AGN. To this purpose, from VLA-COSMOS we considered the 1537, F[1.4 GHz]>0.06 mJy sources with a reliable redshift estimate, and sub-divided them into star-forming galaxies and AGN solely on the basis of their radio luminosity. The AGN sample is complete with respect to radio selection at all z<~3.5. 832 radio sources have a counterpart in the PEP catalogue. 175 are AGN. Their redshift distribution closely resembles that of the total radio-selected AGN population, and exhibits two marked peaks at z~0.9 and z~2.5. We find that the probability for a radio-selected AGN to be detected at FIR wavelengths is both a function of radio power and redshift, whereby powerful sources are more likely to be FIR emitters at earlier epochs. This is due to two distinct effects: 1) at all radio luminosities, FIR activity monotonically increases with look-back time and 2) radio activity of AGN origin is increasingly less effective at inhibiting FIR emission. Radio-selected AGN with FIR emission are preferentially located in galaxies which are smaller than those hosting FIR-inactive sources. Furthermore, at all z<~2, there seems to be a preferential (stellar) mass scale M ~[10^{10}-10^{11}] Msun which maximizes the chances for FIR emission. We find such FIR (and MIR) emission to be due to processes indistinguishable from those which power star-forming galaxies. It follows that radio emission in at least 35% of the entire AGN population is the sum of two contributions: AGN accretion and star-forming processes within the host galaxy.Comment: 13 pages, 14 figures, to appear in MNRA

Dos especies nuevas de Bracon F. y primera cita para la Argentina de Bracon lucileae Marsh (Hymenoptera, Braconidae), parasitoides de Tuta absoluta (Meyrick) (Lepidoptera, Gelechiidae)

Three Argentine species of Bracon F. (Hymenoptera, Braconidae) parasitize larvae of the "tomato moth", Tuta absoluta (Lepidoptera, Gelechiidae). Two new species, B. lulensis and B. tutus, are described and B. lucileae Marsh is recorded from Argentina for the first time. A key to the Argentine species of Bracon, descriptions, and figures are given.La siguiente es una contribución al conocimiento de los parasitoides argentinos del genero Bracon que atacan larvas de la "polilla del tom ate" Tuta absoluta (Meyrick). Se describen dos especies nuevas, B. lulensis y B. tutus y se cita por primera vez para Argentina ala especie B. lucileae Marsh. Se presenta una clave para las especies argentinas de Bracon, e ilustraciones de las especies tratadas

Quantum Brascamp-Lieb dualities

Brascamp–Lieb inequalities are entropy inequalities which have a dual formulation as generalized Young inequalities. In this work, we introduce a fully quantum version of this duality, relating quantum relative entropy inequalities to matrix exponential inequalities of Young type. We demonstrate this novel duality by means of examples from quantum information theory—including entropic uncertainty relations, strong data-processing inequalities, super-additivity inequalities, and many more. As an application we find novel uncertainty relations for Gaussian quantum operations that can be interpreted as quantum duals of the well-known family of ‘geometric’ Brascamp–Lieb inequalities

Dynamic regulation of RAS and RAS signaling

RAS proteins regulate most aspects of cellular physiology. They are mutated in 30% of human cancers and 4% of developmental disorders termed Rasopathies. They cycle between active GTP-bound and inactive GDP-bound states. When active, they can interact with a wide range of effectors that control fundamental biochemical and biological processes. Emerging evidence suggests that RAS proteins are not simple on/off switches but sophisticated information processing devices that compute cell fate decisions by integrating external and internal cues. A critical component of this compute function is the dynamic regulation of RAS activation and downstream signaling that allows RAS to produce a rich and nuanced spectrum of biological outputs. We discuss recent findings how the dynamics of RAS and its downstream signaling is regulated. Starting from the structural and biochemical properties of wild-type and mutant RAS proteins and their activation cycle, we examine higher molecular assemblies, effector interactions and downstream signaling outputs, all under the aspect of dynamic regulation. We also consider how computational and mathematical modeling approaches contribute to analyze and understand the pleiotropic functions of RAS in health and disease

The Effect of Family Economic Education Towards Lifestyle Mediated by Financial Literacy

The objectives of the study were to describe the planning, implementation, observation and reflection, to evaluate and identify the constraints and solutions at each cycle and also to find out the learning outcomes achieved with scientific approach through the discovery learning model for 2nd grade students at SMP 2 Kudus. It was a descriptive qualitative study. The research result showed that the students' activity was enough on the first cycle and good on the second cycle. The average mean score of the written test on the first first cycles B- and A- on the second cycle. If it was seen from the minimum completeness criterion (KKM), there were 19 students with the percentage of acquisition was 55% on the 1st cycle and there were 32 students with the percentage of acquisition was 93% on the 2nd cycle. The observation results showed that scientific approach gave improvement of students' activities on the first cycle and the second cycle. The results obtained from the use of scientific approach through the discovery learning model to improve the activity was good, but it needs to be observed continuously on students' attitudes, skills and knowledge in school life.Penelitian ini dilakukan untuk melihat gaya hidup yang dimiliki oleh mahasiswa apakah dipengaruhi oleh pendidikan yang telah diterima dikeluarga dan financial literacy mereka. Serta pengaruh financial literacy sebagai mediasi untuk pendidikan ekonomi dikeluarga terhadap gaya hidup. Sampel dipilih berjumlah 334 dari populasi 2040 mahasiswa Universitas Indraprasta PGRI Jakarta. Teknik analisis data menggunakan path analysis.Deskripsi data diperoleh bahwa 60,78% mahasiswa pada kategori sedang untuk pendidikan ekonomi dikeluarga, 47% mahasiswa pada kategori tinggi untuk financial literacy dan 58% mahasiswa memiliki gaya hidup tinggi. Penelitian menyimpulkan bahwa (1) pendidikan ekonomi mempengaruhi gaya hidup sebesar 6,4%, (2) financial literacy mempengaruhi sebesar 3,7% terhadap gaya hidup dan (3) pengaruh pendidikan ekonomi dikeluarga melalui financial literacy terhadap gaya hidup sebesar 1,9%. Dapat disimpulkan bahwa financial literacy tidak meningkatkan pengaruh pendidikan ekonomi dikeluarga terhadap gaya hidup. Hasil penelitian akan digunakan sebagai salah satu acuan dalam penerapan perkuliahan kewirausahaan