Enhancement Of Mathematical Reasoning Ability At Senior High School By The Application Of Learning With Open Ended Approach

The objective of this research is to investigate the differences of students’ enhancement of mathematical reasoning ability as the result of the application of learning with open ended approach and conventional learning. The population in this research was the entire students in high schools and Aliyah in Bandung. The sample is students on grade X. Two classes are randomly selected from each school, one class as an experiment class (open-ended approach) and another class as a control class (conventional learning). The instruments used include mathematical prior knowledge test, mathematical reasoning test, and guidelines for observation. The results of data analysis show that if it is viewed as a whole, students’ enhancement of mathematical reasoning who had treated with instruction using open-ended approach was better than students who had treated with regular instruction. There is interaction between learning approach and school levels towards students’ enhancement of mathematical reasoning. There is no interaction between learning approach and the initial of mathematical ability towards students’ enhancement of mathematical reasoning. Keywords: Open Ended Approach, Conventional, and Mathematical Reasonin

Asymptotic analysis of a Neumann problem in a domain with cusp. Application to the collision problem of rigid bodies in a perfect fluid

We study a two dimensional collision problem for a rigid solid immersed in a cavity filled with a perfect fluid. We are led to investigate the asymptotic behavior of the Dirichlet energy associated to the solution of a Laplace Neumann problem as the distance $\varepsilon>0$ between the solid and the cavity's bottom tends to zero. Denoting by $\alpha>0$ the tangency exponent at the contact point, we prove that the solid always reaches the cavity in finite time, but with a non zero velocity for $\alpha <2$ (real shock case), and with null velocity for $\alpha \geqslant 2$ (smooth landing case). Our proof is based on a suitable change of variables sending to infinity the cusp singularity at the contact. More precisely, for every $\varepsilon\geqslant 0$, we transform the Laplace Neumann problem into a generalized Neumann problem set on a domain containing a horizontal strip $]0,\ell_\varepsilon[\times ]0,1[$, where $\ell_\varepsilon\to +\infty$

OGY Control of Haken Like Systems on Different Poincare Sections

The Chua system, the Lorenz system, the Chen system and The L\"u system are chaotic systems that their state space equations is very similar to Haken system which is a nonlinear model of a optical slow-fast system. These Haken-Like Sys-tems have very similar properties. All have two slow but unstable eigenvalues and one fastest but stable eigenvalue. This lets that an approximation of slow manifold be equivalent with unstable manifold of the system. In other hand, control of discreet model of the system on a defined manifold (Poincare map) is main essence of some important control methods of chaotic systems for example OGY method. Here, by using different methods of defining slow manifold of the H-L systems the efficiency of the OGY control for stabilizing problem investigated.Comment: 4 page

UPAYA MENINGKATKAN GERAK DASAR LEMPAR TANGKAP MELALUI FRISBEE GAMES : PTK pada Siswa Kelas V SD Negeri Kartika Sejahtera 01 Kabupaten Bogor

Permasalahan penelitian ini adalah lemahnya pola gerak dasar lempar tangkap dalam pembelajaran pendidikan jasmani di sekolah dasar. Tujuan dari penelitian ini untuk mengungkapkan apakah penerapan pembelajaran frisbee games dapat meningkatkan pola gerak dasar lempar tangkap pada siswa sekolah dasar. Metode penelitian yang digunakan dalam penelitian ini adalah metode penelitian tindakan kelas (Classroom Action Research). Penelitian dilaksanakan pada siswa kelas V B di SDN Kartika Sejahtera 01 Kabupaten Bogor. Desain penelitian atau langkah-langkah penelitian yang dilakukan dalam penelitian tindakan kelas yaitu perencanaan atau planning, tindakan atau acting, pengamatan atau observing, dan refleksi atau reflecting. Instrumen yang digunakan dalam penelitian ini adalah lembar observasi, GPAI (Game Performance Assessment Instrument), catatan lapangan, dokumentasi, dan evaluasi. Pemecahan masalah dalam penelitian ini adalah implementasi pembelajaran frisbee games dapat meningkatkan pola gerak dasar lempar tangkap pada siswa sekolah dasar. Berdasarkan hasil penelitian yang dilaksanakan memperoleh hasil dari proses pembelajaran siswa pada pra observasi 50,31% dan siklus 1 tindakan 1 adalah 56,79%, siklus 1 tindakan 2 adalah 59,41%, siklus 2 tindakan 1 adalah 67,59%, dan siklus 2 tindakan 2 adalah 75,15%. Berdasarkan hasil pengolahan dan analisis data, kesimpulan dari hasil penelitian ini adalah penerapan frisbee games dapat meningkatkan dan memperbaiki pola gerak dasar lempar tangkap pada siswa sekolah dasar. Saran yang diberikan untuk meningkatkan hasil yang lebih optimal, dilakukan dengan siklus berikutnya.----------The problem of this research is the weakness of the basic motion pattern of throwing in the learning of physical education in elementary school. The purpose of this study to reveal whether the application of learning frisbee games can improve the basic motion patterns of catching the elementary school students. The research method used in this research is classroom action research method (Classroom Action Research). The research was conducted on the students of grade V at SDN Kartika Sejahtera 01 Bogor Regency. Design research or research steps undertaken in classroom action research that is planning, acting, observing, and reflecting. The instruments used in this research are observation sheets, GPAI (Game Performance Assessment Instrument), field notes, documentation, and evaluation. The problem solving in this research is the implementation of frisbee games learning can improve the basic motion pattern of throwing catch at elementary school students. Based on the results of the research, the results obtained from the learning process students on pre observation 50.31% and 1st cycle of action 1 is 56.79%, cycle 1 action 2 is 59.41%, cycle 2 action 1 is 67.59%, and Cycle 2 action 2 is 75.15%. Based on the results of processing and data analysis, the conclusion of the results of this study is the application of frisbee games can improve and improve the basic motion patterns of catching lobar in elementary school students. Suggestions given to improve more optimal results, done with the next cycle

PENGARUH OWNERSHIP RETENTION, UNDERWRITER REPUTATION DAN FIRM SIZE TERHADAP PENGUNGKAPAN INTELLECTUAL CAPITAL PERUSAHAAN YANG MELAKUKAN IPO DI BURSA EFEK INDONESIA TAHUN 2010 – 2012 SKRIPSI

Tujuan penelitian ini adalah untuk mengetahui : 1) Pengaruh ownership retention pemegang saham lama terhadap pengungkapan intellectual capital pada perusahaan yang melakukan IPO, 2) Pengaruh reputasi underwriter terhadap pengungkapan intellectual capital pada perusahaan yang melakukan IPO, 3) Pengaruh ukuran perusahaan (firm size) terhadap pengungkapan intellectual capital pada perusahaan yang melakukan IPO . Metode pengambilan sampel dalam penelitian ini adalah metode purposive sampling. Populasi dalam penelitian ini adalah perusahaan yang melakukan IPO di Bursa Efek Indonesia tahun 2010-2012 yang berjumlah 71 perusahaan dengan sampel penelitian sebanyak 46 perusahaan. Alat analisis statistik yang digunakan untuk menguji hipotesis penelitian ini adalah analisis regresi linier berganda dengan bantuan SPSS 20.0. Hasil pengujian hipotesis menunjukkan bahwa ownership retention berpengaruh negatif terhadap pengungkapan intellectual capital, underwriter reputation berpengaruh positif terhadap pengungkapan intellectual capital, dan firm size berpengaruh positif terhadap pengungkapan intellectual capital. The purpose of this research is to know : 1) Influence of ownership retention to intellectual capital disclosure company which IPO, 2) Influence of underwriter reputation to intellectual capital disclosure company which IPO 3) Influence of firm size to intellectual capital disclosure company which IPO. Sample was selected using purposive sampling method. Population in this research is company which IPO in Indonesia Stock Exchage from 2010 to 2012 as many 71 company with the number of sample is 46 company. The analysis tool to test the hypothesis is multiple liniar regression analysis by using SPSS 20.0.The result of hypothesis test showed ownership retention have negative influence to intellectual capital disclosure, underwriter reputation have positive influence to intellectual capital disclosure and firm size have positive influence to intellectual capital disclosure

Reconstructing initial data using observers : error analysis of the semi-discrete and fully discrete approximations

A new iterative algorithm for solving initial data inverse problems from partial observations has been recently proposed in Ramdani, Tucsnak and Weiss [15]. Based on the concept of observers (also called Luenberger observers), this algorithm covers a large class of abstract evolution PDE's. In this paper, we are concerned with the convergence analysis of this algorithm. More precisely, we provide a complete numerical analysis for semi-discrete (in space) and fully discrete approximations derived using finite elements in space and finite differences in time. The analysis is carried out for abstract Schr\"odinger and wave conservative systems with bounded observation (locally distributed).Comment: 38 pages, 1 figure

PEMANFAATAN MOTION GRAPHIC UNTUK MENINGKATKAN KEMAMPUAN SISWA DALAM BERPIKIR TINGKAT TINGGI

Pentingnya penggunaan media pembelajaran berbentuk digital didalam kegiatan pembelajaran merupakan salah satu pilihan yang dapat digunakan guru didalam pembelajaran. Media pembelajaran digital akan sangat memudahkan dalam segi ruang, fleksibilatas dan efisien dibandingkan media pembelajaran berbentuk fisik. Penelitian ini bertujuan untuk menguji apakah media motion graphic dapat meningkatkan berpikir tingkat tinggi siswa dalam mata pelajaran IPS kelas VII di SMP Labs School UPI Bandung ? tujuan khusus pada penelitian ini untuk menguji apakah media motion graphic dapat meningkatkan hasil belajar ranah kognitif aspek menganalisis (C4), mengevaluasi (C5), dan mencipta (C6) pada mata pelajaran IPS. Berdasarkan hasil wawancara yang dilakukan peneliti kepada guru IPS Labs School UPI, bahwa pada saat ini banyak guru memerlukan media pembelajaran berbentuk digital karena dari segi efisien yang sangat mudah di bawa kemana saja dan fleksibel yang tidak banyak memakan ruang didalam kelas merupakan pilihan untuk digunakan didalam proses pembelajaran. Dapat ditarik dari hasil wawancara tersebut permasalahan yang dimiliki sekolah karena kekurangan kelas untuk dijadikan sebuah laboratorium IPS untuk media pembelajaran berbentuk fisik sehingga memerlukan media digital, dan kompetensi guru dalam pembuatan media digital yang kurang mengakibatkan sulitnya pengembangan media pembelajaran di kelas. Selain itu tuntutan pada persaingan global ini, mengharuskan setiap individu memiliki kompetensi agar dapat bersaing dengan individu didalam negeri maupun luar negeri karena kesejahteraan manusia tumbuh dari pengetahua, keterampilan dan cara pandangnya. Pendekatan kuantitatif digunakan dalam penelitian ini dengan metode kuasi eksperimen desain times series.Instrumen pada penelitian dengan instrumen tes uraian dan kuesioner. Hasil pada penelitian menunjukan peningkatan hasil belajar berpikir tingkat tinggi siswa aspek menganalisis (C4), mengevaluasi (C5), mencipta (C6) pada mata pelajaran IPS kelas VII di SMP Labs School UPI Bandung.;--- The importance of the use of digital media of learning in the learning activities is one option that can be used by teachers in learning. Digital learning media will be very easy in terms of space, flexibility and efficiency better than learning media convensional. This research aimed to test whether the media motion graphic can increase students' ability in higher-order thinking in social studies on VII grade Lab School UPI Bandung ? he specific objective of this research is to test whether the media motion graphic can boost the cognitive aspects of learning outcomes analyzed (C4), evaluating (C5), and creates (C6) in social studies. Based on interviews with Dena Y. Sendi (teachers of social studies at Labschool UPI), nowadays many teachers need a media in digital form because in terms of efficient which is very easy to carry anywhere and flexible that does not consume a lot of space in the classroom is an option for use in the learning process. Requirement in this global competition, that every individual has the competence to compete with individuals all around the world, well-being grows out of knowledge, skills and their perspective. A quantitative approach used in this study with a quasi-experimental design methods times series. This research using test instruments description and questionnaire. Results of the research showed improvement of learning outcomes of students to think critically analyze aspects (C4), evaluating (C5), creates (C6) in social studies in VII grade Labs School UPI Bandung