Judul: Contribution of Fisheries Sector and Maritime Tourism to the Income of Fishers Glagah Beach Yogyakarta
Abstrak: The existence of Karangwuni Fish Auction (TPI) is expected to be able to accommodate the catches of fishers as long as the Tanjung Adikarto port has not been completed. However until now, fishers still land fish at Glagah Fish Auction (TPI) and are reluctant to move because the construction of a breakwater in Tanjung Adikarto port has not yet been completed. These activities affect the income of fishers. One of the management steps can be started by knowing the information on the characteristics of fishers's perceptions and calculating the contribution of fishers's income in Glagah Beach. This study aims to identify fishers's perceptions, economic conditions, and the contribution of capture fisheries and marine tourism to fishers's income. This study used the case study method, with the unit of a case being the activities of fishers at Glagah Beach which were analyzed descriptively quantitatively. The results showed that the respondent's assessment of the cognitive aspect was high with a total score of 142 and the affective aspect was moderate with a total score of 113. The criteria for acceptance of fishing business were 1,66 and marine tourism was 1,83, both including profit. The relative contribution value of capture fisheries is more dominant, which is 98,02% while marine tourism is 1,98% of fishers's income every year. Tourism management is not optimal and the construction of a new airport has not yet been completed, making marine tourism unable to compete with the contribution of capture fisheries.
Keyword: Income contribution, fishers, fisheries, marine tourism

Judul: Analysis of Fishers Enthusiasm in Utilization of Tanjung Adhikarta Fishing Port, Kulon Progo Regency.
Abstrak: Pelabuhan Perikanan Tanjung Adhikarta (PPTA) di Kabupaten Kulon Progo, Pesisir Daerah Istimewa Yogyakarta (DIY) diproyeksikan menjadi pusat pertumbuhan ekonomi dimana terdapat layanan usaha perikanan tangkap. Namun belum dimanfaatkan secara optimal oleh nelayan dan masyarakat setempat. Penelitian ini bertujuan untuk mengidentifikasi faktor pendorong, penghambat dan animo nelayan dalam melakukan kegiatan perikanan tangkap dengan PPTA sebagai basis. Subjek penelitian ini meliputi nelayan, pegawai pelabuhan dan stakeholder’s lainnya. Secara keseluruhan, ada empat faktor pendorong nelayan dan masyarakat dalam melakukan kegiatan perikanan tangkap, yaitu harga ikan yang relatif stabil, kemudahan masyaakat mendapatkan pelayanan, tidak ada praktek KKN dan tempat pelelangan ikan (TPI) yang beroperasi normal. Empat faktor penghambat nelayan dan masyarakat melakukan kegiatan perikanan tangkap di PPTA adalah pasar ikan yang tidak beroperasi maksimal, suplai bahan baku ikan yang minim, alat peralatan perbengkelan kapal tidak lengkap dan area perbengkelan yang ada tidak dimanfaatkan. Selain itu, kualitas pelayanan pelabuhan menurut para nelayan masih berada di bawah harapan, dengan 4 faktor pelayanan yang harus ditingkatkan, yakni terkait penyediaan bahan baku, stabilitas harga, pemanfaatan bengkel, dan sarana prasarana peralatan bengkel kapal. Nelayan juga merekomendasikan agar keberadaan TPI tetap dipertahankan. Faktor-faktor lainnya dianggap kurang penting namun seyogianya tetap menjadi diwaspadai karena sewaktu-waktu bisa menjadi permasalahan yang tidak terduga., Tanjung Adhikarta Fishing Port (TAFP) in Kulon Progo Regency, a coastal region of Yogyakarta (DIY), is projected to be an economic growth centre where services capture fishery and other business types are located. However, if local fishers and communities have not optimally utilized this facility, it is classified as one wasted development output. This study aims to identify the fishers and local community's driving factors, obstacles, and enthusiasm for using the port. The subjects of this study include fish, port employees, and other stakeholders. On the one hand, four driving factors encourage fishermen to carry out fisheries activities at the port: stable fish prices, ease in services, absence of corruption, collusion and nepotism, and operational fish auction hall. On the other hand, there are four obstacles: the poor operation of the fish market, minimal supply of fish, incomplete equipment in the ship workshop, and an unutilized workshop area. Fishers consider the quality of port services is still below their expectations, and improvement is needed for the supply of fish, fish price stability, utilization of workshops, and infrastructure for ship workshop equipment. Fishers recommend that the existing fish auction is maintained. Other factors are considered less important but be cautious about anticipating an unexpected problem in the future.
Keyword: fishermen's interest, capture fisheries activities, Kulonprogo, TAFP

Judul: Perbandingan Algoritma Message Digest 5 (MD5) Dan Secure Hash Algorithm 1 (Shai) Untuk Autentikasi Pesan
Abstrak: Seiring dcngan meningkatnya penggunaan internet sebagai media pertukaran pcsan. metodc pcngamanan pcsan menjadi sangat penting. Nilai suatu pesan yang ingin dijaga keutuhan atnu intcgritasnya menycbabkan pesan tcrscbut hanya baleh dimodifikasi olch pihak yang bcrhak. Namun pada rcalitanya, pesan tersebut akan mendapat ancaman dari scorang penyusup. Bentuk ancaman terjadi apabiJa pcnyusup dcngan suatu cara. dapat mengubah isi pesan terscbut untuk bcrbagai kepcntingan. Apabila isi pesan telah bcrubah dad bentuk aslinya, maka pesan terscbut dikatakan sudah tidak aulcnlik (asli) Iagi. Snatn metodc yang efektif untuk mcnguji kcautentikan suatll pesan digllnakan tcknik kriptografi. Pada kal)'a ilmiah ini akan dibahas algoritma Message Digest 5 (MDS) dan Secure !-lash Algorithm (SHAI) untuk autentikasi pesan.
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