178,075 research outputs found
Predicting ride comfort with reclined seats
No full textReclined seats in transport suggest luxury and comfort, but a review of the literature revealed little study of how backrest inclination influences the discomfort caused by vibration of a seat or a backrest. This thesis seeks to advance understanding of the influence of backrest inclination on vibration discomfort and provides a model for evaluating vibration discomfort and metrics for optimising seats with different backrest inclinations.Vibration discomfort depends on the direction and location of vibration input to the body. Subjects used magnitude estimation to judge vibration magnitudes from thresholds of perception up to 2 ms-2 r.m.s. at the 11 preferred 1/3-octave centre frequencies from 2.5 to 25 Hz. The first two experiments determined absolute thresholds and discomfort with x-axis backrest vibration (Experiment 1) and z-axis backrest vibration (Experiment 2) with four backrest inclinations (0°, 30°, 60°, and 90° from vertical). The third experiment investigated discomfort with vertical seat pan vibration and five backrest conditions (no backrest and backrest inclined to 0°, 30°, 60°, and 90°). With x-axis vibration of the back, inclining the backrest had similar effects on thresholds and equivalent comfort contours. Thresholds increased at frequencies from 4 to 8 Hz with increasing inclination of the backrest. With inclined backrests, 40% greater magnitudes of vibration were required from 4 to 8 Hz, to cause discomfort equivalent to that with the upright backrest. Frequency weighting Wc in current standards predicted discomfort and perception of x-axis vibration of the upright backrest (0°) but weighting Wb was more appropriate for inclined backrests. Frequency weighting Wd was appropriate for both discomfort and perception of z-axis vibration of the back at all backrest inclinations. With vertical seat acceleration, the frequency of greatest sensitivity decreased with increasing vibration magnitude. Compared to an upright backrest, around the main resonance of the body the vibration magnitudes required to cause similar discomfort were 100% greater with 60° and 90° backrest inclinations and 50% greater with a 30° backrest inclination.The fourth experiment investigated whole-body vertical vibration on a rigid seat with no backrest and with four backrest inclinations. With an inclined backrest, discomfort caused by high frequency vibration increased at the head or neck but discomfort at the head or neck caused by low frequencies (5 and 6.3 Hz) reduced. With inclined backrests, the procedures in current standards overestimate overall discomfort at frequencies around 5 and 6.3 Hz but underestimate discomfort caused by frequencies greater than about 8 Hz.The final experiment investigated a model for predicting vibration discomfort with three compliant reclined seats. At each frequency, the measured seat dynamic discomfort, MSDD (the ratio of the vibration acceleration required to cause similar discomfort with a compliant seat and a rigid reference seat), was compared with seat effective amplitude transmissibility, SEAT value (the ratio of overall ride values with a compliant seat and a rigid reference seat using the weightings in current standards). The compliant seats increased vibration discomfort at frequencies around the 4-Hz resonance but reduced vibration discomfort at frequencies greater than about 6.3 Hz. The SEAT values provided appropriate indications of how the foam increased vibration discomfort at some frequencies but decreased vibration discomfort at other frequencies. Differences between the SEAT values and the measured seat dynamic discomfort are consistent with the need for different frequency weightings when the body is supported by an inclined backrest.An empirical model was evolved from the experiments for predicting vibration discomfort with reclined seats. It is concluded that reclining a backrest will tend to be detrimental at frequencies greater than about 10 Hz with greater discomfort in the head or neck induced by vibration of the backrest. At frequencies around 5 and 6.3 Hz, reclining a backrest can reduce discomfort
Türk resim ve özgün bask sanat nda Basri Erdem
No full textBu ara t rman n konusunu; Türk Resim ve Özgün Bask resim Sanat nda
Basri Erdem olu turmaktad r. Bu amaçla Türk Resim Sanat ve Türkiye de
Bask resim Sanat n n tarihi aktar lm , Basri Erdem in biyografisi, akademisyen
olarak rolü, sanat , sahip oldu u koleksiyonlar, müzecilik yönü anlat lm t r.
Sanatç n n seçilen eserleri plastik de erler ve içerik aç lar ndan analiz edilmi tir.
Bu ara t rma Nitel ara t rma yöntemlerine göre yap lm t r. Çal man n
do as na uygun olarak Kültür Analizi alt deseni tercih edilmi tir. Veriler Doküman
Analizi ve Görü me yöntemi ile elde edilmi tir. Sanatç n n kendisi, çal ma
arkada lar , sanatç lar ile birebir ve yüz yüze yar yap land r lm görü meler
yap lm t r. Sanatç ya ait eserlerin analizi Akademik ve Disiplinleraras Yeni Sanat
Ele tirisi Kuram na göre yap lm , sanat tarihçi Prof. Dr. Tayfun Akkaya n n uzman
görü üne ba vurulmu tur. Toplanan di er veriler Betimsel Analiz ve çerik Analiz
yöntemlerine göre de erlendirilmi tir.
Bu ara t rma, Türk Resim ve Özgün Bask resim Sanat nda büyük önem arz
eden Basri Erdem hakk nda en kapsaml çal ma olmas bak m ndan önemlidir
Factors Contributing CO2 Emissions: A Linear, Nonlinear, and Panel ARDL Model
No full textThe empirical analysis of the study is conducted by using annual data during the time of 1974-2018 in the context of Bangladesh. Data relating to per capita CO2 emissions, real GDP per capita, energy consumption, financial development, foreign direct investment, trade openness, urbanization, agriculture, and industry have been collected from secondary sources: the World Development Indicators (WDI) online database . The study also applies yearly data of particular South Asian nations explicitly Bangladesh, Pakistan, India, Nepal, and Sri Lanka for the duration of 1978-2018
Pengaruh Kualitas Pelayanan terhadap Kepuasan Nasabah PT. Bank Syariah Indonesia (BSI) KK Hasan Basri Banjarmasin
Get PDFPersaingan yang tajam dan ketat yang mendominasi saat ini membauat
orientasi perbankan difokuskan pada upaya memenuhi keinginan dan kebutuhan
nasabah agar dapat menguasai pangsa pasar. Penjelasan pegawai BSI KK Hasan
Basri kepada nasabah berbelit-belit menjadi nasabah tersebut bingung dan
pegawai Bank Syariah Indonesia KK Hasan Basri kurang peduli kepada nasabah.
Metode penelitian ini kuantitatif merupakan salah satu jenis penelitian
yang spesifikasinya adalah sistematis, terencana dan terstruktur dengan jelas sejak
awal hingga pembuatan desain penelitiannya. Jenis penelitian ini adalah penelitian
empiris dengan tujuan untuk memperoleh gambaran dan memperoleh data
responden pada Bank BSI KK Hasan Basri. Data yang digunakan dalam
penelitian ini adalah data primer. Data primer diperoleh langsung dari nasabah
Bank BSI KK Hasan Basri dengan menggunakan kuesioner.
Hasil penelitian menunjukkan bahwa terjadinya pengaruh pada variabel
kualitas pelayanan terhadap kepuasan nasabah PT. Bank Syariah Indonesia (BSI)
KK Hasan Basri Banjarmasin dikatakan berpengaruh positif. Karena pada hasil uji
Koefisien Determinasi bahwa koefisien korelasi (R2
) sebesar 0,809. Nilai R
2
sebesar 0,809 yang berarti 80,9%, menunjukkan bahwa kualitas pelayanan yang
dirasakan mempunyai pengaruh yang kuat terhadap kepuasan nasabah PT. Bank
Syariah Indonesia (BSI) KK Hasan Basri Banjarmasi
Surprisingly Weak Magnetism on Young Accreting Brown Dwarfs
No full textWe have measured the surface magnetic flux on four accreting young brown dwarfs and one nonaccreting young very low mass (VLM) star utilizing high-resolution spectra of absorption lines of the FeH molecule. A magnetic field of 1-2 kG had been proposed for one of the brown dwarfs, Two Micron All Sky Survey (2MASS) J1207334-393254, because of its similarities to higher mass T Tauri stars as manifested in accretion and the presence of a jet. We do not find clear evidence for a kilogauss field in any of our young brown dwarfs but do find a 2 kG field on the young VLM star. Our 3 sigma upper limit for the magnetic flux in 2MASS J1207334-393254 just reaches 1 kG. We estimate the magnetic field required for accretion in young brown dwarfs given the observed rotations, and find that fields of only a few hundred gauss are sufficient for magnetospheric accretion. This predicted value is less than our observed upper limit. We conclude that magnetic fields in young brown dwarfs are a factor of 5 or more lower than in young stars of about one solar mass, and in older stars with spectral types similar to our young brown dwarfs. It is interesting that, during the first few million years, the fields scale down with mass in line with what is needed for magnetospheric accretion, yet no such scaling is observed at later ages within the same effective temperature range. This scaling is opposite to the trend in rotation, with shorter rotation periods for very young accreting brown dwarfs compared with accreting solar-mass objects (and very low Rossby numbers in all cases). We speculate that in young objects a deeper intrinsic connection may exist between magnetospheric accretion and magnetic field strength, or that magnetic field generation in brown dwarfs may be less efficient than in stars. Neither of these currently has an easy physical explanation
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Faktor-faktor yang mempengaruhi daya saing usaha tahu H. Basri di Kecamatan Batang Toru
Get PDFDaya saing merupakan kemampuan suatu komoditi untuk memasuki pasar dan kemampuan untuk dapat bertahan didalam pasar tersebut, dalam artian jika suatu produk mempunyai daya saing maka produk tersebut yang akan diminati konsumen. Berdasarkan observasi yang dilakukan peneliti di Usaha tahu H. Basri didapati beberapa masalah diantaranya harga yang masih sama dan belum juga memberikan diskon bagi pembeli yang membeli cukup banyak produk, lokasi cukup strategis namun karena banyaknya usaha tahu membuat para konsumen memilih untuk membeli tahu yang dekat menurut pembeli, kualitas produk, kualitas pelayanan yang dimana apabila ada pembeli yang datang maka yang melayanai pembeli adalah pemilik usahanya langsung tanpa adanya campur tangan karyawan sehingga terkadang pembeli harus menunggu pemilik usaha untuk melayani pembeli. Penelitian ini merupakan penelitian kuantitatif, data yang digunakan dalam penelitian ini merupakan data primer dengan membagikan kuesioner. Sampel yang digunakan sebanyak 52 responden sedangkan tektik pengambilan sampel mnggunakan probability sampling. Analisis data yang digunakan adalah uji vadilitas, uji reliabilitas, uji linearitas, uji normalitas, uji multikolinearitas, uji heteroskedastisitas, uji regresilinear berganda, uji koefisien determinasi (R^2), uji parsial (uji t), uji simultan (uji F). Berdasarkan hasil yang dilakukan peneliti menggunakan SPSS versi 23 menunjukkan bahwa terdapat pengaruh harga terhadap daya saing usaha tahu H. Basri di Kecamatan Batang Toru, terdapat pengaruh lokasi terhadap usaha tahu H. Basri di Kecamatan Batang Toru, terdapat pengaruh kualitas pelayanan terhadap usaha tahu H. Basri di Kecamatan Batang Toru, tidak terdapat pengaruh kualitas produki terhadap usaha tahu H. Basri di Kecamatan Batang Toru
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
Get PDFBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
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