PENGARUH METODE JIGSAW DISERTAI MEDIA LKS DAN POWER POINTPADA PEMBELAJARAN KIMIA DITINJAU DARI KREATIVITAS TERHADAP PRESTASI BELAJAR SISWA PADA MATERI POKOK HIDROKARBON KELAS X SEMESTER GENAP DI SMA NEGERI 1 PONOROGO T.A. 2011/2012

Tujuan penelitian ini untuk mengetahui pengaruh pembelajaran dengan metode Jigsaw disertai LKS dan power point terhadap prestasi belajar, prestasi belajar ditinjau dari kreativitas, dan interaksi antara media pembelajaran dengan kreativitas terhadap prestasi belajar di kelas X semester genap SMAN I Ponorogo. Materi yang diambil adalah hidrokarbon. Rancangan penelitian menggunakan “Desain Faktorial 2 x 2 “. Sampel penelitian yaitu kelas X.2 dan X.3 SMA N 1 Ponorogo tahun pelajaran 2011/2012 yang diambil dengan teknik cluster random sampling. Analisis data keadaan awal siswa dalam penelitian ini menggunakan uji normalitas dengan metode Liliefors, uji homogenitas dengan metode Bartlet (Uji Chi Kuadrat), dan uji keseimbangan dengan uji t dua pihak . Uji hipotesis menggunakan uji analisis variansi (anava) dua jalan dengan sel tak sama. Hasil penelitian ini adalah prestasi belajar siswa pada pembelajaran kimia melalui metode jigsaw disertai LKS dan power point memberikan pengaruh yang sama terhadap prestasi belajar kognitif maupun afektif, dimana F hitung 3,002 (kognitif) dan 2,382 (afektif) < F tabel (4,004), kreativitas tidak mempengaruhi prestasi belajar kognitif, di mana F hitung < F tabel yaitu 0,049 < 4,004, sedangkan prestasi belajar afektif siswa yang memiliki kreativitas tinggi lebih tinggi daripada siswa dengan kreativitas rendah, di mana F hitung > F tabel yaitu 5,368 > 4,004, dan tidak ada interaksi antara pembelajaran kimia melalui metode jigsaw disertai LKS dan power point dengan kreativitas terhadap prestasi belajar, F hitung (1,243) < F tabel (4,004), sedangkan pada aspek afektif, nilai F hitung (0,204) < Ftabel (4,004). Kata kunci: Jigsaw, kreativitas, LKS, power point, prestasi belajar , hidrokarbo

PENGARUH METODE JIGSAW DISERTAI MEDIA LKS DAN POWER POINT PADA PEMBELAJARAN KIMIA DITINJAU DARI KREATIVITAS TERHADAP PRESTASI BELAJAR SISWA PADA MATERI POKOK HIDROKARBON KELAS X SEMESTER GENAP DI SMA NEGERI 1 PONOROGO T.A. 2011/2012

Tujuan penelitian ini untuk mengetahui pengaruhpembelajaran dengan metode Jigsaw disertai LKS dan power point terhadap prestasi belajar, prestasi belajar ditinjau dari kreativitas, dan interaksi antara media pembelajaran dengan kreativitas terhadap prestasi belajar di kelas X semester genap SMAN I Ponorogo. Materi yang diambil adalah hidrokarbon. Rancangan penelitian menggunakan “Desain Faktorial 2 x 2 “. Sampel penelitian yaitu kelas X.2 dan X.3 SMA N 1 Ponorogo tahun pelajaran 2011/2012 yang diambil dengan teknik cluster random sampling. Analisis data keadaan awal siswa dalam penelitian ini menggunakan uji normalitas dengan metode Liliefors, uji homogenitas dengan metode Bartlet (Uji Chi Kuadrat), dan uji keseimbangan dengan uji t dua pihak. Uji hipotesis menggunakan uji analisis variansi (anava) dua jalan dengan sel tak sama. Hasil penelitian ini adalahprestasi belajar siswa pada pembelajaran kimia melalui metode jigsaw disertai LKS dan power point memberikan pengaruh yang sama terhadap prestasi belajar kognitif maupun afektif, dimana Fhitung 3,002 (kognitif) dan 2,382 (afektif) &lt; Ftabel (4,004), kreativitas tidak mempengaruhi prestasi belajar kognitif, di mana Fhitung&lt; Ftabel yaitu 0,049 &lt; 4,004, sedangkan prestasi belajar afektif siswa yang memiliki kreativitas tinggi lebih tinggi daripada siswa dengan kreativitas rendah, di mana Fhitung&gt; Ftabel yaitu 5,368 &gt; 4,004, dan tidak ada interaksi antara pembelajaran kimia melalui metode jigsaw disertai LKS dan power point dengan kreativitas terhadap prestasi belajar, Fhitung (1,243) &lt; Ftabel (4,004), sedangkan pada aspek afektif, nilai Fhitung (0,204) &lt; Ftabel (4,004).Kata kunci: Jigsaw, kreativitas,LKS, power point, prestasi belajar ,hidrokarbo

PENGARUH METODE JIGSAW DISERTAI MEDIA LKS DAN POWER POINT PADA PEMBELAJARAN KIMIA DITINJAU DARI KREATIVITAS TERHADAP PRESTASI BELAJAR SISWA PADA MATERI POKOK HIDROKARBON KELAS X SEMESTER GENAP DI SMA NEGERI 1 PONOROGO T.A. 2011/2012

Tujuan penelitian ini untuk mengetahui pengaruhpembelajaran dengan metode Jigsaw disertai LKS dan power point terhadap prestasi belajar, prestasi belajar ditinjau dari kreativitas, dan interaksi antara media pembelajaran dengan kreativitas terhadap prestasi belajar di kelas X semester genap SMAN I Ponorogo. Materi yang diambil adalah hidrokarbon. Rancangan penelitian menggunakan “Desain Faktorial 2 x 2 “. Sampel penelitian yaitu kelas X.2 dan X.3 SMA N 1 Ponorogo tahun pelajaran 2011/2012 yang diambil dengan teknik cluster random sampling. Analisis data keadaan awal siswa dalam penelitian ini menggunakan uji normalitas dengan metode Liliefors, uji homogenitas dengan metode Bartlet (Uji Chi Kuadrat), dan uji keseimbangan dengan uji t dua pihak. Uji hipotesis menggunakan uji analisis variansi (anava) dua jalan dengan sel tak sama. Hasil penelitian ini adalahprestasi belajar siswa pada pembelajaran kimia melalui metode jigsaw disertai LKS dan power point memberikan pengaruh yang sama terhadap prestasi belajar kognitif maupun afektif, dimana Fhitung 3,002 (kognitif) dan 2,382 (afektif) &lt; Ftabel (4,004), kreativitas tidak mempengaruhi prestasi belajar kognitif, di mana Fhitung&lt; Ftabel yaitu 0,049 &lt; 4,004, sedangkan prestasi belajar afektif siswa yang memiliki kreativitas tinggi lebih tinggi daripada siswa dengan kreativitas rendah, di mana Fhitung&gt; Ftabel yaitu 5,368 &gt; 4,004, dan tidak ada interaksi antara pembelajaran kimia melalui metode jigsaw disertai LKS dan power point dengan kreativitas terhadap prestasi belajar, Fhitung (1,243) &lt; Ftabel (4,004), sedangkan pada aspek afektif, nilai Fhitung (0,204) &lt; Ftabel (4,004).Kata kunci: Jigsaw, kreativitas,LKS, power point, prestasi belajar ,hidrokarbo

Single-particle nonlocality and entanglement with the vacuum

We propose a single-particle experiment that is equivalent to the conventional two-particle experiment used to demonstrate a violation of Bell's inequalities. Hence, we argue that quantum mechanical nonlocality can be demonstrated by single-particle states. The validity of such a claim has been discussed in the literature, but without reaching a clear consensus. We show that the disagreement can be traced to what part of the total state of the experiment one assigns to the (macroscopic) measurement apparatus. However, with a conventional and legitimate interpretation of the measurement process one is led to the conclusion that even a single particle can show nonlocal properties.Comment: 6 pages, 5 figure

The Fueling and Evolution of AGN: Internal and External Triggers

In this chapter, I review the fueling and evolution of active galactic nuclei (AGN) under the influence of internal and external triggers, namely intrinsic properties of host galaxies (morphological or Hubble type, color, presence of bars and other non-axisymmetric features, etc) and external factors such as environment and interactions. The most daunting challenge in fueling AGN is arguably the angular momentum problem as even matter located at a radius of a few hundred pc must lose more than 99.99 % of its specific angular momentum before it is fit for consumption by a BH. I review mass accretion rates, angular momentum requirements, the effectiveness of different fueling mechanisms, and the growth and mass density of black BHs at different epochs. I discuss connections between the nuclear and larger-scale properties of AGN, both locally and at intermediate redshifts, outlining some recent results from the GEMS and GOODS HST surveys.Comment: Invited Review Chapter to appear in LNP Volume on "AGN Physics on All Scales", Chapter 6, in press. 40 pages, 12 figures. Typo in Eq 5 correcte

Influence of GaAs Substrate Orientation on InAs Quantum Dots: Surface Morphology, Critical Thickness, and Optical Properties

InAs/GaAs heterostructures have been simultaneously grown by molecular beam epitaxy on GaAs (100), GaAs (100) with a 2° misorientation angle towards [01−1], and GaAs (n11)B (n = 9, 7, 5) substrates. While the substrate misorientation angle increased from 0° to 15.8°, a clear evolution from quantum dots to quantum well was evident by the surface morphology, the photoluminescence, and the time-resolved photoluminescence, respectively. This evolution revealed an increased critical thickness and a delayed formation of InAs quantum dots as the surface orientation departed from GaAs (100), which was explained by the thermal-equilibrium model due to the less efficient of strain relaxation on misoriented substrate surfaces

Energy crisis in Brazil: Impact of hydropower reservoir level on the river flow

Water management strategies can have considerable impacts on the regional climate and hydrology. It is usually the case that the construction and operation of hydropower reduce the river flow downstream due to the increase in evaporation. However, this paper shows that in humid regions, such as in Brazil, the hydropower storage reservoirs contribute to increase the flow of the river. This observation has been tested with historical reservoir levels and river flow data from several dams in Brazil. It was found that the operation of reservoirs in Brazil has a considerable impact on its river flows. The higher the storage level at the beginning of the humid period, the higher the river flow during the wet period. The paper proposes strategies to allow the reservoirs to fill up and to maintain the reservoirs filled in the future, with the intention of increasing hydropower generation and reducing the intermittency of other renewable energy sources

Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at sqrt(s) = 7 TeV

Results are presented from a search for a W' boson using a dataset corresponding to 5.0 inverse femtobarns of integrated luminosity collected during 2011 by the CMS experiment at the LHC in pp collisions at sqrt(s)=7 TeV. The W' boson is modeled as a heavy W boson, but different scenarios for the couplings to fermions are considered, involving both left-handed and right-handed chiral projections of the fermions, as well as an arbitrary mixture of the two. The search is performed in the decay channel W' to t b, leading to a final state signature with a single lepton (e, mu), missing transverse energy, and jets, at least one of which is tagged as a b-jet. A W' boson that couples to fermions with the same coupling constant as the W, but to the right-handed rather than left-handed chiral projections, is excluded for masses below 1.85 TeV at the 95% confidence level. For the first time using LHC data, constraints on the W' gauge coupling for a set of left- and right-handed coupling combinations have been placed. These results represent a significant improvement over previously published limits.Comment: Submitted to Physics Letters B. Replaced with version publishe

Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV

A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 inverse femtobarns. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence level is between 1.4 and 2.4 times the standard model cross section in the mass range between 110 and 150 GeV. The analysis of the data excludes, at 95% confidence level, the standard model Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The largest excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 124 GeV with a local significance of 3.1 sigma. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-150 GeV is estimated to be 1.8 sigma. More data are required to ascertain the origin of this excess.Comment: Submitted to Physics Letters