Judul: The Economic Impact of the Covid-19 Pandemic on the  Kinantan Wildlife and Cultural Park Bukittinggi and its Recovery Strategy
Abstrak: Taman Margasatwa dan Budaya Kinantan (TMSBK) merupakan salah satu objek wisata unggulan di Kota Bukittinggi yang aktivitas ekonominya terdampak akibat pandemi Covid-19. Penelitian ini bertujuan untuk menganalisis perubahan jumlah kunjungan wisatawan pada setiap periode pembatasan mobilitas akibat pandemi Covid-19 di TMSBK, memperkirakan nilai kerugian finansial akibat pandemi Covid-19 terhadap pelaku usaha di sekitar objek wisata TMSBK, dan menganalisis strategi pemulihan ekonomi pasca pandemi Covid-19 terhadap pelaku usaha di sekitar objek wisata TMSBK. Penelitian ini menggunakan data primer dan data sekunder dengan mengkombinasikan tiga metode yaitu content analysis, analisis pendapatan, dan analisis Strength, Weakness, Opportunities, Threats (SWOT). Hasil penelitian menunjukkan bahwa perubahan jumlah kunjungan setiap periode pembatasan mobilitas di TMSBK mengalami penurunan sebesar 47% dari satu tahun sebelum dan saat adanya pandemi Covid-19. Kerugian finansial objek wisata TMSBK sebesar 55% per tahun, sedangkan hotel 59% per tahun. Strategi utama yaitu memperluas promosi melalui sosial media, rebranding, dan renovasi., Kinantan Wildlife and Cultural Park (TMSBK) is one of the prime tourist destinations in Bukittinggi city whose economic activity has been affected by the Covid-19 pandemic. This study aims to analyze the changes in the number of TMSBK tourists’ visits in each period of mobility restrictions due to the Covid-19 pandemic, to estimate the value of financial losses caused by the Covid-19 pandemic to business located around TMSBK, and to analyze the economic recovery strategies after the Covid-19 pandemic for business located around TMSBK. This study used primary data and secondary data by combining three methods, namely content analysis, income analysis, and Strenghts, Weaknesses, Opportunities, Threats (SWOT) analysis. The results show that changes in the number of visits for each period of mobility restrictions in TMSBK decreased by 47% from one year before and during the Covid-19 pandemic. The financial loss of TMSBK is 55% per year, while hotels are 59% per year. The main recovery strategies are expanding promotions through social media, rebranding, and renovation.
Keyword: covid-19, hotel, income, tourism, tourists

Judul: Estimasi Kerugian Ekonomi Akibat Covid-19 Terhadap Kunjungan Wisatawan Di Kota Bogor
Abstrak: Tahun 2020 tepat di bulan Maret terjadi penurunan kunjungan wisatawan ke Kota Bogor karena pandemi Covid-19 dan dampak dari kebijakan PSBB (Pembatasan Sosial Berskala Besar). Situasi ketidakpastian di sektor pariwisata yang muncul akibat Covid-19 harus segera diselesaikan melalui mitigasi dan alokasi risiko. Dampak Pandemi Covid-19 juga memukul pelaku usaha di sektor pariwisata. Penelitian ini bertujuan untuk: (1) Mengestimasi penurunan kunjungan wisatawan di Kota Bogor akibat adanya Covid-19 (2) Mengestimasi besar kerugian ekonomi pariwisata akibat adanya Covid-19 di Kota Bogor (3) Mengidentifikasi risiko terhadap pariwisata akibat Covid-19 di Kota Bogor (4) Mengidentifikasi langkah dan strategi yang dilakukan dalam pemulihan pariwisata di Kota Bogor. Metode yang digunakan yaitu pendapatan yang hilang, penilaian risiko, dan analisis deskriptif. Hasil dari penelitian ini menunjukkan pandemi Covid-19 telah menyebabkan penurunan penerimaan sektor pariwisata pada objek wisata, restoran dan hotel. Risiko dengan kelas risiko tinggi adalah kategori risiko permintaan dan kelas risiko menengah pada kebijakan pemerintah dengan semua sub kategori. Langkah yang diambil untuk pemulihan pariwisata adalah meyakinkan bahwasanya pelaku usaha industri pariwisata dan pemerintah sudah mengaplikasikan standar keamanan serta kesehatan yang memadai., In March 2020 there was a decline in tourist visits to Bogor City due to the Covid-19 pandemic and the impact of the PSBB (Large-Scale Social Restrictions) policy. The situation of uncertainty in the tourism sector that has arisen due to Covid-19 must be solved immediately by means of mitigation and risk allocation. The impact of the Covid-19 pandemic has also hit businesses in the tourism sector. This study aims to: (1) Estimate the decline in tourist visitor in Bogor City due to Covid-19 (2) Estimate the economic loss of tourism sector due to Covid-19 in Bogor City (3) Identify risks to tourism due to Covid-19 in Bogor City (4) Identify management steps and strategies in efforts to recovery tourism in Bogor City. This research uses the loss of earnings method, risk assessment, and descriptive analysis. The results of this study showed the Covid-19 pandemic has caused a decline in revenue in the tourism sector at tourism objects, restaurants and hotels. The risk with high risk class is the demand risk category and the medium risk class on government policies with all sub categories. The effort should be tourism recovery are to provide assurance that the government and tourism industry have implemented health and safety standards.
Keyword: descriptive analysis, loss of earnings, risk assessment

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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