6,398 research outputs found
EMPIRICAL POWER COMPARISON OF NON-NESTED TESTS FOR THE EVM: SOME MONTE CARLO EVIDENCE
Recently, Bodla and Bhatti (2007) revisited Davidson and MacKinnon’s (2002) well-known J test and noted that thought the test is simple to compute but lack small sample exact test computation properties. This paper is one of the attempts to compute a new version of the J test and compare its power performance with the various existing tests to see the relative strength of our test to be called as an approximately most powerful test. The main objective of this paper is to study Monte Carlo evidence on finite sample performance of the now modified non-nested tests of mismeasured regression models in EVM, Errors in Variables Models, setting to see if the power performance of the new test.Nonnested models, power & size of a test, Monte Carlo Simulation
Current Results from the RRFID Kinematic Survey: Apparent Speeds from the First Five Years of Data
We present current results from our ongoing project to study the parsec-scale
relativistic jet kinematics of sources in the U.S. Naval Observatory's Radio
Reference Frame Image Database (RRFID). The RRFID consists of snapshot
observations using the VLBA plus up to 9 additional antennas at 8 and 2 GHz.
The Image Database currently contains about 3000 images of 450 sources from
1994 to 2004, with some sources having images at 20 epochs or more. We have now
completed analysis of the 8 GHz images for all sources observed at 3 or more
epochs from 1994 to 1998. The completed analysis comprises 966 images of 87
sources, or an average of 11 epochs per source. Apparent jet speeds have been
measured for these sources, and the resulting speed distribution has been
compared with results obtained by other large VLBI surveys. The measured
apparent speed distribution agrees with those found by the 2 cm survey and
Caltech-Jodrell Bank (CJ) survey; however, when a source-by-source comparison
is done with the 2 cm survey results, significant disagreement is found in the
apparent speed measurements for a number of sources. This disagreement can be
traced in most cases to either an insufficient time baseline for the current
RRFID results, or to apparent component mis-identification in the 2 cm survey
results caused by insufficient time sampling. These results emphasize the need
for long time baselines and dense time sampling for multi-epoch monitoring of
relativistic jets.Comment: 4 pages, To be published in the Proceedings of the 7th European VLBI
Network Symposiu
Analisis Sungai Tiung Dalam Rangka Pengendalian Banjir
Banjir di DAS Tiung terjadi akibat meluapnya Sungai Tiung karena penampang sungai mengalami pendangkalan dan penyempitan. Penyebabnya berkaitan erat dengan kegiatan pendulangan intan yang tidak terkendali, mengakibatkan tanah menjadi gersang dimana resisten terhadap erosi, sehingga mengalirkan endapan ke alur sungai. Oleh karena itu diperlukan studi untuk menentukan besar debit banjir rencana dalam periode 25 tahun, sekaligus meninjau profil muka air sungai terhadap kondisi eksisting, yang akhirnya dapat dijadikan acuan dalam USAha pengendalian banjir.Tujuan dari penelitian adalah untuk menganalisis sungai tiung dalam rangka pengendalian banjir, dalam menganalisis Sungai Tiung ini, diperlukan beberapa analisis seperti analisis hidrologi yang mencakup analisis curah hujan maksimum dengan metode Probabilitas Frekuensi (Log Normal,Gumbel dan Log Pearson Tipe III) dan analisis debit banjir rancangan dengan metode empiris seperti metode Rasional praktis,Hasper, Der Weduwen, dan Hidrograf Satuan Sintetis Nakayasu.Pada analisis hidrolika , dalam penentuan elevasi muka air dan dimensi saluran normalisasi untuk debit periode 25 tahun digunakan program bantu Hec-Ras 3.0. Sedangkan analisis stabilitas lereng didukung dengan program bantu Xstable yang mengacu pada Modified Bishop Method.Hasil analisis hidrologi memperlihatkan besar banjir periode 25 tahun menunjukkan harga debit sebesar 54,826 m3/d dan berdasarkan hasil analisis hidraulika, besarnya dimensi saluran normalisasi untuk periode tersebut adalah 9 m (lebar dasar) dan 3,6 m (tinggi saluran) dengan talud 1: 1,5. Jarak air yang melimpas di kiri dan kanan tepi alur sungai diprediksi sebesar 8,12 m untuk periode ulang 50 tahun. Nilai keamanan terhadap keruntuhan lereng (SF) diperoleh 2,33 untuk bagian hulu dan 1,903 untuk bagian hilir dengan menggunakan program Xstable
Pengaruh Motivasi Terhadap Minat Mahasiswa Untuk Mengikuti Pendidikan Profesi
Penelitian ini bertujuan untuk menganalisis pengaruh dimensi motivasi terhadap mahasiswa untuk mengikuti Pendidikan Profesi Akuntan. Populasi penelitian adalah seluruh mahasiswa akuntansi di Kota Semarang. Sampel penelitian berjumlah 388 yang berasal dari empat perguruan tinggi, yaitu UNNES, UNDIP, UNIKA dan UDINUS. Variabel independen dalam penelitian ini yaitu motivasi yang terdiri atas motivasi kualitas, motivasi karir, motivasi ekonomi, dan motivasi sosial. Sedangkan variabel dependennya adalah minat mengikuti PPA. Pengumpulan data dilakukan dengan kuesioner, dan data dianalisis dengan menggunakan metode analisis regresi berganda. Hasil penelitian menunjukkan bahwa motivasi berpengaruh terhadap minat mahasiswa untuk mengikuti PPA sebesar 23,2%. Berdasarkan temuan tersebut, disarankan kepada lembaga penyelenggara PPA untuk selalu mengembangkan kurikulum PPA
Coherently controlled entanglement generation in a binary Bose-Einstein condensate
Considering a two-component Bose-Einstein condensate in a double-well
potential, a method to generate a Bell state consisting of two spatially
separated condensates is suggested. For repulsive interactions, the required
tunnelling control is achieved numerically by varying the amplitude of a
sinusoidal potential difference between the wells. Both numerical and
analytical calculations reveal the emergence of a highly entangled mesoscopic
state.Comment: 6 pages, 6 figures, epl2.cl
Fungsi Kawasan dan Strategi Pengelolaan Hutan Lindung Wosi Rendani Kabupaten Manokwari
The results of the research showed that the forest of Wosi Rendani protection has slope 21.9% (score 60), soil type podsolic/ ultisol (Score 60) and 12.86 rain intensity (score 10), altitude 210 m asl, with a total score of 130 as a buffer zone. Perceptions of respondents unanimously positive 64.17% and 75% attitude towards local community-based management. This is due to the location of protected areas that are near human settlements and local immigrant who feared if the protected forest next to landslides and people lack of clean water. Inside the forest, there is an object HLWR areas and attractions such as waterfalls, caves, springs, pools that can be used as the establishment of protected forest. Protected forest of Rendani Wosi area has considerable potential to support regional management efforts such as the potential for flora and fauna, water, waterfalls and springs and caves as well as the support of the community around the area, but the legality of the area there has been no major obstacles in the management of this protected fores
Persepsi Siswa Terhadap Pelayanan Sirkulasi Di Perpustakaan SMA Negeri 4 Kota Ternate
The library has a very important meaning to the intellectual life of the nation in accordance with paragraph 4 of the opening of the constitution of 1945. The presence of libraries in each educational unit in the formal education is a necessity to function as a source of information on teaching and learning activities. Whether or not a library, is closely related to how the circulation of services provided to users. Services circulation is one of the first library services directly related to library users.Library SMAN 4 of Ternate in the business, to support their parent institutions in achieving the goal of providing various kinds of services kapada educators and students including circulation services. Circulation services include a variety of activities, namely lending and pegembalian collection, determining fines, the maintenance of a library membership and billing collection is past time limit borrowing.From the research results obtained by the students of SMAN 4 Ternate only occasionally emnggunakan circulation services, and assume that the system has good circulation. 26.6% were satisfied with the service circulation, 33.3% feel quite complete library collection, 40% still having trouble finding the collections, and 46% said the service was very helpful in finding the circulation of library collections.Expected circulation services can better help the students to find a collection that is needed in the library so that the means of retrieval should be considered
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