PE NGGUNAAN MODEL DISCOVERY LEARNING UNTUK MENINGKATKAN DISIPLIN DAN HASIL BELAJAR SISWA DALAM PEMBELAJARAN PKN POKOK BAHASAN PERATURAN PERUNDANG - UNDANGAN (Penelitian Tindakan Kelas di Kelas V SDN Cibeunying 1 Kecamatan Majalaya Kabupaten Bandung Tahun Ajaran 2015/2016)

Penelitian ini bertujuan untuk meningkatkan disiplin dan hasil belajar siswa melalui model pembelajaran Discovery learning dalam pembelajaran PKn pokok bahasan Peraturan Perundang - undangan . Penelitian tindakan kelas ini dilaksanakan di kelas V SDN Cibeunying 1 Kecamata Majalaya Kabupaten Bandung yang tidak menggunakan model pembelajaran yang variatif sehingga siswa menjadi pasif dan hasil belajarnya masih banyak yang belum mencapai KKM mata p elajaran PKn yaitu 60. Sehingga perlu adanya inovasi dalam proses pembelajaran, salah satunya dengan penggunaan model Discovery Learning . Penelitian ini menggunakan metode penelitian tindakan kelas (PTK) dengan menggunakan sistem siklus yang terdiri dari p erencanaan, pelaksanaan, observasi, dan refleksi. Penelitian ini dilaksanakan dalam 2 siklus. Teknik evaluasi yang digunakan pada penelitian ini adalah teknik tes dan non tes. Teknik tes digunakan untuk mengetahui hasil belajar siswa, dan teknik non tes di gunakan untuk mengetahui disiplin dan aktivitas belajar siswa. Hasil penelitian menunjukkan bahwa penggunaan model pembelajaran Discovery learning dapat meningkatkan disiplin dan hasil belajar siswa. Hal tersebut dapat dilihat dari nilai rata - rata peningka tan sikap disiplin dan kemampuan siswa dalam mengerjakan soal pretes dan postes dari pra siklus, siklus I sampai siklus II, yaitu pada siklus I disiplin siswa yang memperoleh kriteria tercapai sebesar 3 5% sedangkan hasil belajar siswa sebesar 91 % memenuhi KKM. Kemudian pada siklus II diperoleh hasil disiplin siswa meningkat sebesar 7 5% dan hasil belajar siswa meningkat sebesar 96 % yang memenuhi KKM. Kesimpulan yang diperoleh dari penelitian ini adalah penggunaan model Discovery Learning dapat meningkatkan disiplin dan hasil belajar siswa dalam pembelajaran PKn pokok bah asan Peraturan Perundang - undangan di kelas V SDN cibeunying 1 Kecamatan Majalaya Kabupaten Bandung . Dengan demikian model Discovery learning dapat dijadikan sebagai salah satu model pembelaja ran untuk diterapkan pada pembelajaran PKn . Kata Kunci: discovery Learning , Disiplin , Hasil Belaja

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

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Effect of topology on the transport properties of two interacting dots

The transport properties of a system of two interacting dots, one of them directly connected to the leads constituting a side-coupled configuration (SCD), are studied in the weak and strong tunnel-coupling limits. The conductance behavior of the SCD structure has new and richer physics than the better studied system of two dots aligned with the leads (ACD). In the weak coupling regime and in the case of one electron per dot, the ACD configuration gives rise to two mostly independent Kondo states. In the SCD topology, the inserted dot is in a Kondo state while the side-connected one presents Coulomb blockade properties. Moreover, the dot spins change their behavior, from an antiferromagnetic coupling to a ferromagnetic correlation, as a consequence of the interaction with the conduction electrons. The system is governed by the Kondo effect related to the dot that is embedded into the leads. The role of the side-connected dot is to introduce, when at resonance, a new path for the electrons to go through giving rise to the interferences responsible for the suppression of the conductance. These results depend on the values of the intra-dot Coulomb interactions. In the case where the many-body interaction is restricted to the side-connected dot, its Kondo correlation is responsible for the scattering of the conduction electrons giving rise to the conductance suppression

Scalable Ion Trap Quantum Computing without Moving Ions

A hybrid quantum computing scheme is studied where the hybrid qubit is made of an ion trap qubit serving as the information storage and a solid-state charge qubit serving as the quantum processor, connected by a superconducting cavity. In this paper, we extend our previous work [1] and study the decoherence, coupling and scalability of the hybrid system. We present our calculations of the decoherence of the coupled ion - charge system due to the charge fluctuations in the solid-state system and the dissipation of the superconducting cavity under laser radiation. A gate scheme that exploits rapid state flips of the charge qubit to reduce decoherence by the charge noise is designed. We also study a superconducting switch that is inserted between the cavity and the charge qubit and provides tunable coupling between the qubits. The scalability of the hybrid scheme is discussed together with several potential experimental obstacles in realizing this scheme

Attīstības un inovācijas izpēte Latvijā: tēžu krājums

Sagatavots Valsts pētījumu programmas “Inovācija un ilgtspējīga attīstība: Latvijas pēckrīzes procesi globālā kontekstā (SUSTINNO)” ietvaros

Probing dense and hot matter with low-mass dileptons and photons

Results on low-mass dileptons, covering the very broad energy range from the BEVALAC up to SPS are reviewed. The emphasis is on the open questions raised by the intriguing results obtained so far and the prospects for addressing them in the near future with the second generation of experiments, in particular HADES, NA60 and PHENIX.Comment: 6 pages, 8 figures, Proceedings of Hard Probes 2004 Conference, Ericeira, November 4-10, 2004. Caption of Figure 2 corrected. To be published in Eur. Phys. J. C. The orginal version is available at www.springerlink.co

Attīstības un inovācijas izpēte Latvijā: tēžu krājums

Sagatavots Valsts pētījumu programmas “Inovācija un ilgtspējīga attīstība: Latvijas pēckrīzes procesi globālā kontekstā (SUSTINNO)” ietvaros

Hund's coupling and the metal-insulator transition in the two-band Hubbard model

The Mott-Hubbard metal-insulator transition is investigated in a two-band Hubbard model within dynamical mean-field theory. To this end, we use a suitable extension of Wilson's numerical renormalization group for the solution of the effective two-band single-impurity Anderson model. This method is non-perturbative and, in particular, allows to take into account the full exchange part of the Hund's rule coupling between the two orbitals. We discuss in detail the influence of the various Coulomb interactions on thermodynamic and dynamic properties, for both the impurity and the lattice model. The exchange part of the Hund's rule coupling turns out to play an important role for the physics of the two-band Hubbard model and for the nature of the Mott-transition