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Perbaikan Sungai Waridin
No full textBanjir adalah sebuah keadaan dimana daerah yang biasanya tidak tergenang oleh air seperti pemukiman, daerah industri, dan fasilitas umum lainnya menjadi tergenang. Keadaan seperti ini sangat merugikan baik secara moril maupun material seperti terhambatnya jalur transportasi yang berimbas pada laju roda perekonomian suatu daerah.
Permasalahan banjir yang terjadi di Kendal antara lain disebabkan karena meluapnya salah satu sungai yaitu Sungai Waridin. Sungai Waridin memiliki panjang sekitar 26,3 km yang mengalir dari pertemuan Sungai Aji dan Sungai
Loningan hingga Jembatan Semarang-Kendal. Kondisi Sungai Waridin yang mengalami penyempitan alur serta pendangkalan menyebabkan berkurangnya kapasitas penampang sungai untuk mengalirkan debit banjir. Sungai Waridin tidak dapat lagi menampung debit banjir khususnya yang terjadi pada musim penghujan sehingga mengenangi wilayah di sekitar Sungai Waridin. Selain itu, banjir juga disebabkan karena tanggul sungai yang dibuka untuk jalan akses sehingga air dari
sungai dapat dengan mudah meluap. Dari studi dan perhitungan yang telah dilakukan menggunakan bantuan software HEC-RAS untuk mengetahui dampak dari debit banjir rencana terhadap
penampang sungai tersebut untuk mengetahui perlu tidaknya perbaikan penampang sungai. Permasalahan banjir di Sungai Waridin diatasi dengan berbagai cara, yaitu dengan perbaikan penampang, perencanaan tanggul, peninggian tanggul eksisting, perbaikan dinding penahan tanah dan perkuatan lereng atau tebing yang rawan terhadap longsor
Analisis Laju Sedimentasi Di Perairan Muara Sungai Waridin Kabupaten Kendal
Get PDFMuara Sungai Waridin berada di Desa Wonorejo, Kabupaten Kendal. Sungai Waridin yang bermuara di Laut Jawa pada awalnya dibangun untuk menanggulangi banjir. Namun, kapasitas aliran berkurang karena sungai tersebut dipenuhi sedimen khususnya di daerah muara. Proses sedimentasi yang terjadi akan menimbulkan pendangkalan yang dapat menghambat aliran sungai ke laut dan menyebabkan banjir. Penelitian ini bertujuan untuk mengetahui besarnya nilai laju sedimentasi di muara Sungai Waridin. Penelitian dilaksanakan dalam dua tahap, yaitu penelitian lapangan pada tanggal 12 – 24 Mei 2016 dan analisa laboratorium pada bulan Juni hingga Juli 2016. Data primer pada penelitian ini meliputi sampel sedimen di sediment trap, arus, debit sungai, dan sedimen suspensi. Data sekunder pada penelitian ini berupa pasang surut BMKG Semarang, peta Rupa Bumi Indonesia (RBI), Peta Bathimetri, dan google earth image 2016. Metode penelitian yang digunakan adalah metode deskriptif dan penentuan pengambilan sampel dengan metode purposive sampling. Hasil penelitian menunjukan nilai rata-rata laju sedimentasi di setiap stasiun berkisar antara 0,446 kg//hari – 0,655 kg//hari. Total nilai laju sedimentasi dari setiap stasiun pada pengambilan pertama 4,529 kg//hari, pengambilan kedua 4,452 kg//hari, pengambilan ketiga 4,423 kg//hari, dan pengambilan keempat 4,420 kg//hari. Jenis sedimen di perairan muara Sungai Waridin yaitu pasir (sand), pasir lanauan (silty sand), dan lanau pasiran (sandy silt). Tipe pasang surut di perairan muara Sungai Waridin pada bulan Mei 2016 adalah tipe pasang surut campuran (dominan tunggal)
Analisis Hook Rate dan Komposisi Hasil Tangkapan Pada Kapal Tuna Long line “Hisatoshi Maru” yang Beroperasi di Perairan Jepang
Get PDFWARIDIN (NPM : 3118500016) Analysis of Hook Rate and Composition of Catches on the Tuna Long line Vessel "Hisatoshi Maru" Operating in Japanese Waters. (Supervisors: Kusnandar and Sri Mulyani).
WARIDIN (NPM : 3118500016) Analisis Hook Rate dan Komposisi Hasil Tangkapan Pada Kapal Tuna Long line “Hisatoshi Maru” yang Beroperasi di Perairan Jepang. (Dosen Pembimbing : KUSNANDAR dan SRI MULYANI).
Tuna Long line is a fishing tool that is widely used by fishermen in Japan, especially for catching tuna and marlin. This fishing gear is well developed in Japan because it is an efficient and effective fuel for catching tuna and the like which are spread throughout Japan. The aim of this research is to determine the distribution of hook rates and the composition of catches in long line tuna based on season and to determine the composition of catches.
The research was carried out from August 2021 to May 2022 using the Hisatoshi Maru ship operating in Japanese waters. The material used in this research is the long line tuna fishing unit "Hisatoshi Maru". The method used in this research is a case study and a qualitative approach using observation, interview and documentation techniques as data collection techniques.
The hook rate distribution was 1,997 fish and the by-catch was 72 fish with 1,500 hooks. The main catch that was mostly caught was 1,424 albacore fish (69%) and 54 (2%) Meka fish as by-catch. The hook rate for the main catch is 1.33% and the hook rate for the by-catch is 0.048%. The hook rate results vary with values between 0.303% to 3.904% and are highest on the 9th trip which coincides with winter.
The composition of the main catch was dominated by albacore with 1,424 individuals (69%) and bigeye tuna with 435 individuals (21%), while the by-catch was mecha with 54 individuals (2%) and blue marlin with 13 individuals (1%).
The material used is an analysis of hook rate and catch composition on the long line tuna vessel "Hisatoshi Maru" operating in Japanese waters.
Keywords: Catch Results, Tuna Long Line, Hook Rat
Evaluasi Stabilitas Lereng Dengan Metode Limit Equilibrium pada Sungai Waridin
Get PDFRivers play an important role in improving the welfare and quality of life of the Indonesian people. In addition, rivers can also cause flooding. The Waridin River is one of the rivers in the Kendal regency area. Flooding is an event where inundation occurs in a flat area around the river due to the overflow of water that the river cannot accommodate. To overcome the flood problem, the addition of parapets and the normalization of the river were carried out. For this reason, it is necessary to analyze the slope stability of the Waridin river from the excisiting conditions, design and construction conditions by paying attention to 3 (three) modeling conditions. The method used in this analysis is the Limit Equilibrium method, which utilizes software, specifically Geostudio, through the SLOPE/W menu. The analysis was carried out on existing conditions, planning, and construction. This analysis was carried out under normal conditions, earthquakes, and rapids. The results of the existing analysis were obtained that in the condition of the combination of earthquakes, the slope stability was below the safe factor, namely 1.02 < 1.2. sendang in other conditions tends to be safe. In the planning analysis by combining normalization and the addition of parapets with a 3-meter mini pile foundation, the results of all analysis conditions exceeded the value of the safety factor. Because at the time of construction a landslide occurred, a back analysis was carried out where the results of the back analysis were added reinforcement to the foot of the river slope with a mini pile of 4 meters with a distance of 1 meter each associated with the frame beams. The analysis results obtained show that it is safe for all implementation conditions.Sungai memegang peranan penting dalam rangka peningkatan kesejahteraan dan kualitas hidup masyarakat Indonesia. Selain itu sungai juga dapat mengakibatkan banjir. Sungai waridin merupakan salah satu sungai yang ada di wilayah kabupaten Kendal. Banjir merupakan peristiwa terjadi genangan pada daerah datar sekitar sungai akibat meluapnya air yang tidak mampu ditampung oleh sungai. Untuk mengatasi permasalahan banjir dilakukan penambahan parapet serta normalisasi sungai. Untuk itu diperlukan analisis stabilitas lereng dari sungai Waridin tersebut ditinjau dari kondisi eksisting, kondisi desain serta konstruksi dengan memperhatikan 3 (tiga) kondisi pemodelan. Metode yang digunakan dalam analisis ini adalah dengan metode Limit Equilibrium dengan menggunakan bantuan perangkat lunak yaitu Geostudio menggunakan menu SLOPE/W. Analisis dilakukan pada kondisi eksisting, perencanaan, serta pada konstruksi. Analisis ini dilakukan pada keadaan normal, gempa, serta rapidrawdown. Hasil dari analisis eksisting didapatkan hasil pada kondisi kombinasi gempa kestabilan lereng berada di bawah faktor aman yaitu 1.02 < 1.2 pada kondisi lain cenderung aman. Pada analisis perencanaan dengan kombinasi normalisasi serta penambahan parapet dengan fondasi mini pile 3 meter didapatkan hasil semua kondisi analisis melebihi nilai faktor keamanan. Dikarenakan pada saat konstruksi terjadi longsor maka dilakukan back analisis dimana hasil dari back analisis tersebut dilakukan penambahan perkuatan pada bagian kaki lereng sungai dengan mini pile 4 meter dengan jarak masing –masing 1 meter yang dikaitkan dengan balok frame. Hasil analisis yang didapat menunjukan aman untuk semua kondisi pelaksanaan
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
Variations on the Author
Get PDF“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
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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