62 research outputs found
Manajemen Penanggulangan Kemacetan Transportasi Publik di Dinas Perhubungan Kota Manado
Basically, the development of large cities in developing countries face the problem of the dichotomy of development physically, economically and socially. The high rate of urbanization is characterized by high population growth rate to bring the various implications and issues on urban space resources will increase dramatically. Congestion is a universal problem caused by population growth, technological developments and other, this problem must be a demand for the government and is a crucial issue in any city in the world, in Indonesia especially specifically in the city of Manado, this study is to analyze the alleviation of congestion of public transport in the Department of Transportation the city of Manado, this study used qualitative research methods. From the research results can be seen that the reduction of congestion at the Department of Transportation in Manado is sufficient maximu
Magnetic properties of HO2 thin films
We report on the magnetic and transport studies of hafnium oxide thin films
grown by pulsed-laser deposition on sapphire substrates under different oxygen
pressures, ranging from 10-7 to 10-1 mbar. Some physical properties of these
thin films appear to depend on the oxygen pressure during growth: the film
grown at low oxygen pressure (P ~= 10-7 mbar) has a metallic aspect and is
conducting, with a positive Hall signal, while those grown under higher oxygen
pressures (7 x 10-5 <= P <= 0.4 mbar) are insulating. However, no intrinsic
ferromagnetic signal could be attributed to the HfO2 films, irrespective of the
oxygen pressure during the deposition.Comment: 1
Rancang Bangun Aplikasi Perkiraan Penjualan pada CV Mula Jaya Nofina Menggunakan Analisa Forecasting
CV Mula Jaya Nofina merupakan CV yang menyuplai barang kebutuhan Perusahaan-Perusahaan besar. Barang yang disediakan oleh CV Mula Jaya Nofina tidak terfokus pada satu jenis barang saja, melainkan meliputi seluruh jenis barang. Ada beberapa jenis barang yang pembeliannya terdeteksi dilakukan secara rutin setiap bulannya. Nilai penjualan barang tersebut tentunya mengalami kenaikan dan penurunan, baik yang signifikan maupun tidak. Dengan adanya data penjualan di tempo hari, maka pegawai dapat melakukan forecasting nominal penjualan berikutnya. Tujuan utama dibuatnya aplikasi ini adalah untuk membantu pegawai dalam melakukan forecasting, menggunakan Analisa Runtut Waktu (Time Series Analysis). Sedangkan metode yang digunakan adalah Metode Rata-rata Bergerak Sederhana (Simple Moving Average Method). Variabel yang dijadikan patokan hanya satu parameter untuk perhitungannya, sehingga dapat disebut Single Moving Average Method. Hasil dari aplikasi ini berupa informasi mengenai jumlah penjualan yang mungkin terjadi pada periode akan datang sehingga pegawai dapat mempersiapkan jumlah suatu barang sesuai dengan hasil forecasting tersebut. Namun hasil perhitungan pada aplikasi ini menghasilkan nilai kesalahan yang cukup besar, melebihi standar deviasinya. Sehingga dapat disimpulkan bahwa forecasting menggunakan Metode Single Moving Average ini kurang tepat apabila diterapkan pada pola data yang bersifat siklis
Local tetragonal distortion in La_{0.7}Sr_{0.3}MnO_3 strained thin films probed by x-ray absorption spectroscopy
We report on an angular resolved X-ray Absorption Spectroscopy study of
thin films epitaxially grown by pulsed laser
deposition on slightly mismatched substrates which induce tensile or
compressive strains. XANES spectra give evidence of tetragonal distortion
within the octahedra, with opposite directions for tensile and
compressive strains. Quantitative analysis has been done and a model of
tetragonal distortion reflecting the strain has been established. EXAFS data
collected in plane for tensile substrate confirm the change in the
average bond distance and the increase of length matching with the
enlargement of the cell parameter. From these results we conclude that there is
no significant change in the angle. Our observations conflict with
the scenarios which this angle is the main driving parameter in the sensitivity
of manganite films properties to external strains and suggest that the
distortion within the octahedra plays a key role in the modification of the
transport and magnetic properties.Comment: 8 pages, 6 figure
Effect of disorder on the magnetic and transport properties of La_{1-x}Sr_{x}MnO_{3}
We study a simplified model of the electronic structure of compounds of the
type of LaSrMnO. The model represents each Mn ion by a
spin S=1/2, on which an electron can be added to produce Mn. We include
two strong intratomic interactions in the Hamiltonian: exchange (% ) and
Coulomb (). Finally, to represent the effect of Sr substitution by La in a
simple way, we include a distribution of diagonal energies at the Mn sites.
Then we use Green function techniques to calculate a mobility edge and the
average density of states. We find that according to the amount of disorder and
to the concentration of electrons in the system, the Fermi level can cross the
mobility edge to produce a metal to insulator transition as the magnetization
decreases (increase of temperature). If the disorder is large, the system
remains insulating for all concentrations. Concentrations near zero or one
favor the insulating state while intermediate values of concentration favor the
metallic state.Comment: 11 pages, 4 figures available upon request, accepted for publication
in Solid State Communication
New national and regional Annex I Habitat records: from #60 to #82
New Italian data on the distribution of the Annex I Habitats are reported in this contribution. Specifically, 8 new occurrences in Natura 2000 sites are presented and 49 new cells are added in the EEA 10 km × 10 km reference grid. The new data refer to the Italian administrative regions of Campania, Calabria, Marche, Piedmont, Sardinia, Sicily, Tuscany and Umbria. Relevés and figures are provided as Supplementary material respectively 1 and 2. Copyright Antonio Morabito et al
Highly specific memory b cells generation after the 2nd dose of bnt162b2 vaccine compensate for the decline of serum antibodies and absence of mucosal iga
Specific memory B cells and antibodies are a reliable read-out of vaccine efficacy. We analysed these biomarkers after one and two doses of BNT162b2 vaccine. The second dose significantly increases the level of highly specific memory B cells and antibodies. Two months after the second dose, specific antibody levels decline, but highly specific memory B cells continue to increase, thus predicting a sustained protection from COVID-19. We show that although mucosal IgA is not induced by the vaccination, memory B cells migrate in response to inflammation and secrete IgA at mucosal sites. We show that the first vaccine dose may lead to an insufficient number of highly specific memory B cells and low concentration of serum antibodies, thus leaving vaccinees without the immune robustness needed to ensure viral elimination and herd immunity. We also clarify that the reduction of serum antibodies does not diminish the force and duration of the immune protection induced by vaccination. The vaccine does not induce sterilizing immunity. Infection after vaccination may be caused by the lack of local preventive immunity because of the absence of mucosal IgA
Specific heat and magnetic order in LaMnO_{3+\delta}
Magnetic and specific-heat measurements are performed in three different
samples of LaMnO_{3+\delta}, with \delta=0.11, 0.15 and 0.26, presenting
important disorder effects, such as carrier localization, due to high amounts
of La and Mn vacancies. For the samples with \delta =0.11 and 0.15, magnetic
measurements show signatures of a two-step transition: as the temperature is
lowered, the system enters a ferromagnetic phase followed by a disorder-induced
cluster-glass state. Spin-wave-like contributions and an unexpected large
linear term are observed in the specific heat as a function of temperature. In
the sample with the highest vacancy content, \delta=0.26, the disorder is
sufficient to suppress even short-range ferromagnetic order and yield a
spin-glass-like state.Comment: RevTeX 2-col, 8 pages, 5 ps figures included, submitted to PR
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