1,720,988 research outputs found
ARIMA models for bus travel time prediction
Full text linkLink to publisher's homepage at http://www.myiem.org.my/In this paper, the time series model, Autoregressive Integrated Moving Average (ARIMA) is used to predict bus travel time. ARIMA model is simpler used for predicting bus travel time based on travel time series data (historic data) compared to regression method as the factors affecting bus travel time are not available in detail such as delay at link, bus stop, intersection, etc. Bus travel time prediction is an important aspect to bus operator in providing timetable for bus operation management and user information. The study aims at finding appropriate time series model for predicting bus travel time by evaluating the minimum of mean absolute relative error (MARE) and mean absolute percentage prediction error (MAPPE). In this case, data set was collected from the bus service operated on a divided 4-lane 2-way highway in Ipoh-Lumut corridor, Perak, Malaysia. The estimated parameters, appropriate model, and measures of model performance evaluation are presented. The analysis of both Ipoh to Lumut and Lumut to Ipoh directions is separately performed. The results show that the predicted travel times by using the moving average, MA(2) and MA(1) model, clearly fit with the observed values for both directions, respectively. These appropriate models are indicated by the minimum MARE and MAPPE values among the tentative models. It is concluded that MA(2) and MA(1) models are able to be appropriately applied in this case, and those models can be used for bus travel time prediction which helping in the timetable design or setup
Rancang Bangun Mesin Pembuatan Mie dengan Sistem Pneumatik
No full textRINGKASAN Suwardo, Mukhamad. 2018. RancangBangunMesinPembuat Mie denganSistemPotongPneumatik. Tugas Akhir, Program Studi Diploma III TeknikMesin. JurusanPendidikanVokasi, FakultasTeknik, UniversitasNegeri Malang. Pembimbing: Drs Imam Sudjono M.T. Kata Kunci: mesin mie, perancanganmesin, pembuatanmesin, pneumatik Perkembanganteknologi di zaman sekarangini semakinmajudenganbanyaknya teknologi alternatif baru yang ditemukan. Proses memanfaatkanteknologisangatmenunjangkeefektifansuatuperkerjaan,misalnyadalam prosespembuatanmie zaman dulualat yang digunakanhanyaalatkonvensional yang berbentukgilinganmanual, sementara zaman sekarang sudah menggunakan mesin. Mie adalahmakanan yang terbuatdaricampurantepungterigu, tepungtapioka, telur, air danbahancampuranlainnyaadajuga yang menambahkanbahanlainyasebagai rasa atauwarnadalammietersebut.Denganseiringperkembanganteknologi dan banyaknya konsumen yang semakin padat makadariitumesinpembuatmie yang lebihefektifharusdiciptakan agar proses produksilebihcepatmakadiperlukanmesinpembuatmiedengansistempotongpneumatik, mesininimelakukanpemotongansecaraotomatisdanmemilikipemindahhasilpotongmenggunakan conveyor. Rancangbangunmesininidilakukandengantahapanyaituperencanaangambarmesindanpenjelasankomponen. Analisisteknikmeliputidaya motor, torsi kapaitassertakontruksimesinnya. Prinsipkerjamesininiberbedadenganmesinpembuatmielainnya, perbedaan padasistempotong menggunakanpneumatikdan conveyor untukmemudahkandalamproduksimie, dalammesinpembuatmieinitelahditentukan proses perhitungandandiperolehhasilkapsitasmesin 24 kg/jam, denganspesifikasi motor mesin 0,75 HP, putaran motor 1400 rpm, panjangmesin 975 mm, lebarmesin 32 mm dantinggimesin 605 mm. Pada proses pembuatanmesinmieini, pemilihanbahanuntukkomponenmesinadalahhalpertama yang dilakukan. Seperti pada komponen rol pemipih dan pembentuk mie terbuat dari bahanstainlesssteel, untuk bahan conveyor setelah dibentuk mie terbuat dari kulit sintesis,ketiga komponen tersebut bersentuhan langsung dari adonan mie sampai terbentuknya mie yang di potong-potong.Karena itumesin ini harus terjagakehigienisannya dan ketikadikosumsi terjaminkebersihan dan kesehatan konsumenya.Perawatan yang dilakukan dalam mesin dibagi 3 meliputi: perawatan harian, perawatan mingguan, serta bulanan. Dalammesininibiaya yang dikeluarmesinmiedengansistempotongpneumatikinidenganrincian total biayapembelianbakuadalahRp 7.334.000.-, keuntungan 20% sebesarRp 1.466.800,- ,sertabiayappn 10% adalahRp 733.400,- sehingga total dalam proses pembuatanmesinmiedengansistempototngpneumatikiniadalahRp 9.534.200,
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
LATAR, ALUR, PENOKOHAN, TEMA, AMANAT, DAN SITUASI SOSIAL BUDAYA NOVEL GADIS KRETEK KARYA RATIH KUMALA
Full text linkThe research aimed to describe and explain the setting, plot, characterization, theme, message of Gadis Kretek. Besides, it also tried to search the social-cultural value contained within the novel. This research is descriptive-qualitative in nature. The findings are as follows: (1) The spatial setting is Jakarta, Cirebon, Kudus, Muntilan, Temanggung; while, the temporal setting is some time from pre-independence of Indonesia up to 1970s; then, the social setting is Javanese society of low class, middle, and upper class. (2) The plot is chronologically regressive, quantitatively double, and qualitatively loose. (3) The analysis on characterization using analytic and dramatic techniques showed that the main characters of the novel are Soeraja , Idroes Moeria, Soedjagad, Roemasia, Dasiyah (Jeng Yah), Pak Trisno, Lebas, and Tegar. (4) The mayor theme of the literary work is the flashback of cigarette industry, the family secret, and the revelation of Djagad Raja cigarette; meanwhile, the minor theme is (a) No matter how tightly a secret is kept, one day it will be revealed and (b) The victory and success of such an effort needs hard work and perseverance. (5) The message of Gadis Kretek is that the author would like to confirm the readers that honesty, hard work, openness, and education are the priority to struggle in life in order to gain success and peace. (6) The social-cultural value which is contained in the novel is related to the social-culture of the low to middle class of Javanese society
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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