Judul: The Effectiveness of Instagram and Website as  Promotional Media for Community-Based Ecotourism in Gunung Ciremai  National Park
Abstrak: Ekowisata berbasis masyarakat (EBM) sebagai tren baru pariwisata memiliki dua tantangan dalam pengomunikasiannya, yaitu masyarakat belum terinformasikan dan program pengomunikasian belum baik. Taman Nasional Gunung Ciremai (TNGC) sebagai kawasan ekowisata berbasis masyarakat tidak hanya mempromosikan kawasannya secara konvensional, tetapi juga melalui Instagram dan website. Sehingga, tujuan dari penelitian ini yaitu menganalisis efektivitas Instagram dan website sebagai media promosi TNGC. Metode yang digunakan adalah metode kuantitatif didukung dengan data kualitatif. Responden merupakan khalayak Instagram dan website TNGC yang diperoleh melalui accidental sampling. Berdasarkan penelitian, website merupakan media yang paling efektif untuk melakukan promosi dibanding Instagram. Faktor yang berhubungan efektivitas Instagram pada indikator perhatian adalah kelengkapan, kejelasan, dan daya tarik pesan. Sementara itu pada indikator ketertarikan berhubungan dengan kejelasan pesan, indikator keinginan berhubungan dengan kelengkapan, daya tarik, dan frekuensi pesan, indikator tindakan berhubungan dengan kejelasan dan frekuensi pesan. Sementara itu kelengkapan pesan, kejelasan pesan, desain website, dan frekuensi pesan website berhubungan dengan efektivitas website., Community-based ecotourism (CBE) as a new trend of tourism has two challenges in communicating, namely the community has not been informed and the communication program has not been good. Mount Ciremai National Park (TNGC) as an CBE area does not only promote its area conventionally, but also through Instagram and websites. Thus, the purpose of this study is to analyze the effectiveness of Instagram and the website as a promotional medium for TNGC. The method used is a quantitative method supported by qualitative data. Respondents are the audience of Instagram and the TNGC website obtained through accidental sampling. Based on research, the website is the most effective media for promotion compared to Instagram. Factors of the messages related to the effectiveness of Instagram on attention indicators are completeness, clarity, and attractiveness. Meanwhile, the interest indicator relates to clarity, the desire indicator relates to the completeness, attractiveness, and frequency, the action indicator relates to the clarity and frequency. Meanwhile, completeness, clarity, website design, and website frequency are related to website effectiveness.
Keyword: community-based ecotourism, instagram, promotion media, website

Judul: The Effectiveness of Social Media @Kebunraya_Id as Ecotourism Marketing Communication Media Bogor Botanical Garden
Abstrak: Seiring berkembangnya teknologi dan internet di Indonesia memunculkan media-media baru dalam media promosi salah satunya adalah media sosial. Media promosi digunakan pada berbagai bidang usaha salah satunya pada bidang pariwisata khususnya ekowisata yang merupakan wisata alam berbasis pendidikan dan berkelanjutan, sehingga diperlukannya media promosi yang efektif. Tujuan dari penelitian ini adalah untuk menganalisis efektivitas media sosial @kebunraya_id sebagai media komunikasi pemasaran ekowisata di Kebun Raya Bogor. Metode yang digunakan adalah analisis data primer dan sekunder dengan pendekatan kuantitatif yang didukung oleh data kualitatif. Teknik pengambilan sampel yang digunakan adalah teknik accidental sampling dengan jumlah responden sebanyak 50 orang yang merupakan pengunjung Kebun Raya Bogor. Hasil penelitian menunjukan media sosial @kebunraya_id tergolong cukup efektif sebagai media komunikasi pemasaran dengan rataan skor yang cukup tinggi yaitu 2,97 dalam skala 1-4. Faktor-faktor yang berhubungan dengan efektivitas media sosial @kebunraya_id, yaitu karakteristik media sosial berhubungan nyata dengan action dan share, serta keterdedahan media sosial yang berhubungan nyata dengan attention, interest, search, dan share., Along with the development of technology and the internet in Indonesia, new media have emerged in promotional media, one of which is social media. Promotional media is used in various business fields, one of which is in the field of tourism, especially ecotourism which is an education-based and sustainable nature tourism, so that effective promotional media is needed. The purpose of this study was to analyze the effectiveness of social media @kebunraya_id as an ecotourism marketing communication media at the Bogor Botanical Garden. The method used is primary and secondary data analysis with a quantitative approach supported by qualitative data. The sampling technique used is accidental sampling technique with a total of 50 respondents who are visitors to the Bogor Botanical Garden. The results showed that social media @kebunraya_id is quite effective as a marketing communication medium with a fairly high average score of 2.97 on a scale of 1-4. Factors related to the effectiveness of social media @kebunraya_id, namely social media characteristics are significantly related to action and share, as well as social media discoverability which is significantly related to attention, interest, search, and share.
Keyword: ecoturism, marketing communication, social media effectiveness

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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