Judul: Efektivitas Kampanye Komunikasi #VaksinHarusLengkap dalam Mendukung Program Vaksinasi Covid-19.
Abstrak: Berbagai langkah preventif dilakukan untuk mengatasi penyebaran virus Covid-19, salah satunya dengan program vaksinasi Covid-19. Akan tetapi, masih terdapat masyarakat yang ragu dan kurang percaya untuk menerima vaksin Covid19. Oleh karenanya, pemerintah membentuk Komite Penanganan Covid-19 dan Pemulihan Ekonomi Nasional (KPCPEN). Melalui media Instagram @lawancovid_id, KPCPEN melakukan berbagai kampanye salah satunya kampanye #VaksinHarusLengkap. Tujuan penelitian ini adalah untuk menganalisis efektivitas kampanye #VaksinHarusLengkap dalam mendorong masyarakat untuk dapat mengikuti program vaskinasi Covid-19 dengan dosis lengkap. Penelitian menggunakan metode survey dengan instrumen kuisoner melalui platform Google-Form yang disebarkan kepada 70 responden sebagai pengikut akun @lawancovid19_id. Hasil penelitian menunjukkan bahwa efektivitas kampanye berada pada kategori tinggi untuk aspek tingkat pengetahuan dan berada pada kategori sedang untuk aspek tingkat sikap dan perilaku. Hubungan nyata ditemukan antara karakteristik individu pada variable usia dan tingkat pendidikan dengan efektivitas kampanye komunikasi pada aspek sikap. Selain itu, terdapat hubungan nyata lainnya yang ditemukan antara strategi pesan kampanye dengan efektivitas kampanye komunikasi., Various preventive steps have been taken to overcome the spread of the Covid-19 virus, one of which is the Covid-19 vaccination program. However, some people are doubtful in receiving the Covid-19 vaccine. Therefore, the government formed the Committee for Handling Covid-19 and National Economic Recovery (KPCPEN). Through the media Instagram @lawancovid_id, KPCPEN conducts various campaigns, one of which was the #VaksinHarusLengkap campaign. This study aimed to analyze the effectiveness of the #VaksinHarusLengkap campaign in encouraging people to take part in the full dose of the Covid-19 vaccination. The research used a survey method with a questionnaire instrument via the Google-Form, distributed to 70 respondents of the @lawancovid19_id’s followers. This research shows that the effectiveness of communication campaigns has the highest rate for changes of knowledge, and a moderate rate for changes of attitudes and bebehaviorsSignificant relationships were found between individual characteristics on indicators of age and level of education with the effectiveness of communication campaigns on the attitude aspect. In addition, there is another real relationship between message strategies and the effectiveness of communication campaigns.
Keyword: effectiveness, campaign, message strategy, vaccine

Judul: Efektivitas Strategi Komunikasi Eksternal Humas  Pemerintah Kecamatan dalam Diseminasi Informasi Vaksinasi Covid-19
Abstrak: Program vaksinasi Covid-19 tidak sepenuhnya dapat diterima oleh masyarakat. Berbagai upaya telah dilakukan, salah satunya diseminasi informasi vaksinasi Covid 19 dengan menerapkan strategi media komunikasi eksternal berupa penyebaran poster dan siaran keliling oleh humas pemerintah Kecamatan Ciomas. Namun, masih terdapat masyarakat yang belum mengalami penerimaan informasi vaksinasi Covid 19. Oleh karena itu, tujuan dari penelitian ini untuk melihat sejauh mana efektivitas strategi komunikasi eksternal humas pemerintah Kecamatan Ciomas dalam melakukan diseminasi informasi vaksinasi Covid-19. Metode yang digunakan adalah metode penelitian survei, kombinasi pengumpulan data kuantitatif dan data kualitatif. Responden merupakan masyarakat Kecamatan Ciomas yang pernah melihat dan mendengar informasi vaksinasi Covid-19, serta responden diperoleh dari multistage random sampling. Berdasarkan penelitian, ditemukan hubungan antara jenis pekerjaan dan tingkat pendidikan dengan tingkat penerimaan diseminasi informasi pada kedua media. Selain itu, ditemukan hubungan antara efektivitas strategi komunikasi (kognitif, afektif, dan konatif) dengan tingkat penerimaan informasi responden pada media., The Covid-19 vaccination program is not fully accepted by the public. Various efforts have been made, one of which is the dissemination of information on the Covid-19 vaccination by implementing an external communication media strategy in the form of distributing posters and mobile broadcasts by the public relations of the Ciomas District government. However, there are still people who have not received information on Covid-19 vaccinations. Therefore, the purpose of this study was to see the effectiveness of the external public relations strategy of the Ciomas District government in disseminating information on Covid-19 vaccinations. The method used is a survey research method, a combination of quantitative and qualitative data collection. Respondents are residents of Ciomas District who have seen and heard information on Covid-19 vaccination, and respondents were obtained from multistage random sampling. Based on the research, found a relationship between the type of work and education level with the level of acceptance of information dissemination in both media. In addition, found a relationship between the effectiveness of communication strategies (cognitive, affective, and conative) with the level of acceptance of respondents' information on the media.
Keyword: external communication, government public relations, information dissemination

Judul: Tree berdiameter lima adalah graceful
Abstrak: This manuscript presents some proofs that every tree of diameter five is graceful. A graceful tree is a graph which has a graceful labelling. This labelling assigns absolute difference of connected vertices, such that the resulting edge labels are mutually distinct. There are three theorems to be considered. First theorem proves that every tree of diameter four is graceful. Second theorem proves that every tree of diameter five is graceful or nearly graceful. The third theorem improves the second theorem and shows that every tree of diameter five is nearly graceful, which can be transformed into graceful using some certain patterns.
Keyword: Graf, Pelabelan graceful, Bogor Agricultural University, Institut Pertanian Bogor, IPB