Sustainability indicators

Imagine a situation where, after debating for years on what makes you happy, you finally decide that it is about time you start put these ideas into practice and effectively make yourself happy(ier). If you are really determined, you will be keen to stop convincing yourself that you are happy if you are not: you will want to check whether you are really making progress towards achieving your goals. You will have identified different components of your happiness and will assess some of them, progressing cautiously, step by step. You will also be aware of the links between these components, links that determine your overall state of happiness. In the situation described above, now replace the term 'happiness' by that of 'sustainability' - like concepts such as justice, truth, or happiness indeed, it is a desirable objective, albeit difficult to capture in a concise, shared, definition

A new type of temperature driven reorientation transition in magnetic thin films

We present a new type of temperature driven spin reorientation transition (SRT) in thin films. It can occur when the lattice and the shape anisotropy favor different easy directions of the magnetization. Due to different temperature dependencies of the two contributions the effective anisotropy may change its sign and thus the direction of the magnetization as a function of temperature may change. Contrary to the well-known reorientation transition caused by competing surface and bulk anisotropy contributions the reorientation that we discuss is also found in film systems with a uniform lattice anisotropy. The results of our theoretical model study may have experimental relevance for film systems with positive lattice anisotropy, as e.g. thin iron films grown on copper.Comment: 7 pages, 4 figures, accepted for publication in EPJ

One-step generation of high-quality squeezed and EPR states in cavity QED

We show how to generate bilinear (quadratic) Hamiltonians in cavity quantum electrodynamics (QED) through the interaction of a single driven three-level atom with two (one) cavity modes. With this scheme it is possible to generate one-mode mesoscopic squeezed superpositions, two-mode entanglements, and two-mode squeezed vacuum states (such the original EPR state), without the need for Ramsey zones and external parametric amplification. The degree of squeezing achieved is up to 99% with currently feasible experimental parameters and the errors due to dissipative mechanisms become practically negligible

On relativistic approaches to the pion self-energy in nuclear matter

We argue that, in contrast to the non-relativistic approach, a relativistic evaluation of the nucleon--hole and delta-isobar--nucleon hole contributions to the pion self-energy incorporates the s-wave scattering, which requires a more accurate evaluation. Therefore relativistic approach containing only these diagrams does not describe appropriately the pion self-energy in isospin symmetric nuclear matter. We conclude that, a correct relativistic approach to the pion self-energy should involve a more sophisticated calculation in order to satisfy the known experimental results on the near-threshold behaviour of the pion-nucleon (forward) scattering amplitude.Comment: 7 pages,1 figur

Non-equilibrated post freeze out distributions

We discuss freeze out on the hypersurface with time-like normal vector, trying to answer how realistic is to assume thermal post freeze out distributions for measured hadrons. Using simple kinetic models for gradual freeze out we are able to generate thermal post FO distribution, but only in highly simplified situation. In a more advanced model, taking into account rescattering and re-thermalization, the post FO distribution gets more complicated. The resulting particle distributions are in qualitative agreement with the experimentally measured pion spectra. Our study also shows that the obtained post FO distribution functions, although analytically very different from the Juttner distribution, do look pretty much like thermal distributions in some range of parameters.Comment: 14 pages, 2 figures, EPJ style, submitted to EPJ

Exclusive Semileptonic Rare Decays B→K(∗)l+l−B \to K^{(*)} l^+ l^- in a SUSY SO(10) GUT

In the SUSY SO(10) GUT context, we study the exclusive processes $B \to K^{(*)} l^+l^-(l=\mu,\tau)$. Using the Wilson coefficients of relevant operators including the new operators $Q_{1,2}^{(\prime)}$ which are induced by neutral Higgs boson (NHB) penguins, we evaluate some possible observables associated with these processes like, the invariant mass spectrum (IMS), lepton pair forward backward asymmetry (FBA), lepton polarization asymmetries etc. In this model the contributions from Wilson coefficients $C_{Q_{1,2}}^\prime$, among new contributions, are dominant. Our results show that the NHB effects are sensitive to the FBA, $dL/d\hat{s}$, and $dT/d\hat{s}$ of $B \to K^{(*)} \tau^+ \tau^-$ decay, which are expected to be measured in B factories, and the average of the normal polarization $dN/d\hat{s}$ can reach several percent for $B \to K \mu^+ \mu^-$ and it is 0.05 or so for $B\to K \tau^+\tau^-$, which could be measured in the future super B factories and provide a useful information to probe new physics and discriminate different models.Comment: 16 pages,7 figure

PEMBELAJARAN MEMBANDINGKAN TEKS PROSEDUR KOMPLEKS DENGAN TEKS EKSPOSISI MENGGUNAKAN MODEL INKUIRI PADA SISWA KELAS X SMA PASUNDAN 3 BANDUNG 2016 /2017

vi ABSTRAK Me mbaca adalah suatu proses yang dilakukan serta dipergunakan oleh pembaca untuk memp e roleh pesan, yang hendak disampaikan oleh penulis melalui media kata - kata atau bahasa tu lis. Salah satu m ode l pembelajaran yang dapat meningkatkan kreati fitas siswa dalam me mbandingkan teks prosedur kompleks de ngan teks eksposisi , yaitu de - ngan m ode l inkuiri salah satu alat kegiatan pembelajaran yang mendorong siswa untuk belajar aktif yang menekankan pada proses berpikir secara kritis dan analitis . Rumusan masa lah yang penulis ajukan (1) m ampukah penulis melaks a nakan pembelajaran membandingkan teks prosedur kompleks dengan teks eksposisi dengan menggunakan model Inkuiri pada siswa kelas X SMA Pasundan 3 Ban dung? ; (2) m ampukah siswa kelas X SMA Pasundan 3 Bandung melakukan pembelajaran mem - bandingkan teks prosedur kompleks dengan teks eksposisi dengan menggunakan m odel Inkuiri ? ; (3) e fektifkah mode l Inkuiri diterapkan dalam pembelajaran membandingkan teks prosedur kompleks dengan teks eks posisi kompleks pada siswa kelas X SMA Pasundan 3 Bandung ? Penenelitian ini bertu juan untuk mengetahui kemampuan penulis, kemampuan siswa dan ketepat an model inkuiri dalam pem belajaran me mbandingkan teks prosedur kompleks dengan teks eksposisi menggunakan m ode l inkuiri pada siswa kelas X SM A Pasundan 3 Ba ndung . Hipotesis yang penulis rumuskan yaitu: (1) p enulis mampu melaksanakan pem - belajaran membandingkan teks prosedur kompleks dengan teks eksposisi menggunakan model Inkuiri pada siswa kelas X SMA Pasundan 3 Bandung ; (2) s iswa kelas X SMA Pasundan 3 Bandung mampu mengikuti pembelajaran membandingkan teks prosedur kompleks dengan teks eksposisi dalam bentuk tulisan berdasarkan struktur kedua teks ; (3) m odel Inkuiri efektif digunakan dalam pembelajaran membandingkan teks prosedur kompleks dengan teks eksposisi pada siswa kelas X SMA Pasundan 3 Bandung. M etode penelitian yang digunakan penulis dalam penelitian ini adalah metode penelitian one group pretest - posttest design, dengan teknik penelitian telaah pustaka, observasi, uji coba, dan tes. Adapun hasil penelitiannya sebagai berikut. 1. Penulis mampu merencanakan dan melaksanakan pembelajaran me mbanding kan teks prosedur kompleks dengan teks eksposisi menggunakan m ode l inkuiri pada siswa kelas X IPS 2 SM A Pasundan 3 Bandung. Hal ini terbukti dengan hasil penilaian perencanaan dan pelaksanakan pembelajaran sebesar 3, 8 6. Kemampuan penulis termasuk ke dalam kategori sangat baik (A). 2. Siswa kelas X IPS 2 SMA Pasundan 3 B andung mampu me mbandingkan teks prosedur kompleks dengan teks eksposisi menggunakan m ode l inkuiri . Hal ini terbukti dari nilai rata - rata pretes yaitu 1, 53 , sedangkan nilai rata - rata postes 3,22 . Jadi selisih nilai rata - rat a pre tes dan post es yaitu 1,69 . 3. M ode l inkuiri efektif digunakan dalam me mbandingkan teks prosedur kom pleks pada siswa kelas X IPS 2 SM A Pasundan 3 Bandung. Hal ini terbukti dari hasil perhitungan taraf signifikan perbedaan dua mean antara pretes dengan nilai postes , diketahui t hitung 20,87 > t tabel 2,0 9 . Dengan demikian penulis menyimpulkan pembelajaran membandingkan teks prosedur kompleks dengan teks eksposisi menggunakan model inkuiri menunjukan ke - berhasilan. Kata kunci: Pembelajaran, membandingkan, teks prosedur kompleks, teks eks posisi, inkuiri