1,720,960 research outputs found
ESTIMASI HASIL TANGKAPAN MAKSIMUM SUMBER DAYA UDANG DI LAUT ARAFURA DENGAN MODEL PRODUKSI SURPLUS
No full textKegiatan perikanan udang di Laut Arafura sudah berjalan sejak tahun 60-an, sehingga upaya pengkajian dalam rangka memperoleh manfaat yang berkelanjutan perlu terus dilakukan. Berdasarkan pada data hasil tangkapan' dan 'upaya' periode 1991-2002, diperoleh dua jenis indeks kelimpahan stok (CPUE).</jats:p
IMPLIKASI IUU FISHING DALAM PENGELOLAAN SUMBER DAYA IKAN DI INDONESIA
Full text linkPada tatanan dunia, regional, dan nasional, dewasa ini isu kegiatan yang berkaitan dengan IUU fishing adalah merupakan ancaman utama terhadap sediaan ikan. Telah banyak inisiatif international yang didukung oleh organisasi internasional seperti FAO telah menyiapkan International Plan of Action dari IUU Fishing. Walaupun jumlah negara yang mencoba mengembangkan National Plan of Action dari IUU Fishing terus bertambah, tetapi dalam beberapa hal, kegiatan IUU Fishing merupakan hal yang banyak terjadi dan merupakan ancaman nyata terhadap perikanan lokal. Adalah benar bahwa perhatian dunia terhadap IUU Fishing terus meningkat sebagai akibat yang nyata penurunan sediaan ikan dunia secara drastis. Perkiraan kasar secara keseluruhan menunjukkan bahwa paling tidak 30% dari hasil tangkapan perikanan dunia diperoleh dari kegiatan IUU Fishing. Ini memperlihatkan bahwa masalah IUU Fishing tersebut meningkat dengan kuat, terutama bila dilihat dari percepatan penurunan ketersediaan sumber daya perikanan. Tulisan ini menyajikan hal-hal yang berkaitan dengan pengkajian sediaan dan pengelolaan perikanan seperti juga halnya kegiatan IUU Fishing yang terjadi di Indonesia. Dampak IUU Fishing terhadap hasil pengkajiaan sediaan pada akhirnya digunakan sebagai informasi dasar untuk pengelolaan perikanan juga dibahas. Rekomandasi disampaikan dalam kaitannya untuk mengurangi kegiatan IUU Fishing dan meningkatkan pengkajian sediaan ikan dan pengelolaan perikanan.At global, regional, and national levels, issues associated with IUU fishing activities currently constitute a major world-wide threat to fisheries stocks. There have already been many international initiatives supported by international organizations such as the FAO which have been engaged in the International Plan of Action on IUU fishing. Although an increasing number of countries are trying to develop national plan of actions on IUU fishing, in many parts, IUU fishing practices are still common place and constitute a real threat to local fishers. Indeed, there is increasing global concern about IUU fishing practices due to the fact that global fish stocks are declining drastically. Approximate estimations suggest that overall at least 30% of world-wide fisheries catch is obtained from IUU fishing activities. This shows that the problem is increasingly severe, especially in view of the accelerating overall decline in available fisheries resources. This paper presents briefly regarding stock assessment and fisheries management as well as IUU fishing activities that undertake in Indonesian waters. The impact of IUU fishing to the result of stock assessment, that finally used as basic information for fisheries management is also discuss. Recommendation ismade in relation to eliminate IUU fishing activities and improvement of stock assessment and fisheries management
KETERKAITAN FAKTOR OSEANOGRAFI DENGAN SUMBER DAYA IKAN PELAGIS
No full textBerlandaskan anggapan bahwa sumber daya ikan pelagis kecil menempati wilayah perairan yang luas, mencakup perairan Laut Flores, sehingga peningkatan produksi ikan masih layak dilaksanakan. Berbasis pada data survai akustik dan oseanografi yang dikumpulkan pada bulan November 1999, penelitian ini bertujuan merangkum berbagai informasi mengenai dinamika spasial agregasi ikan dan hubungannya dengan karakteristik perairan yang diperlukan dalam pengembangan penangkapan.</jats:p
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
PERKEMBANGAN DAN PENGELOLAAN PERIKANAN LEMURU, Sardinella lemuru Bleeker 1853 Dl SELAT BALI
No full textPerikanan lemuru di Selat Bali berkembang sejak tahun 1974, di mana pada tahun itu terdapat 10 unit pukat cincin. Keberhasilan alat tangkap ini menyebabkan jumlahnya terus bertambah dengan pesat, sehingga perlu diambil langkah-langkah untuk membatasi perkembangannya lebih jauh. Pada tahun 1977 jumlah pukatcincin yang beroperasi sebanyak 100 unit.</jats:p
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
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