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: Analysis of Economic Impact and Tourism Carrying Capacity due to Covid-19 at  Taman Mini Indonesia Indah
Abstrak: Daerah Khusus Ibukota (DKI) Jakarta merupakan provinsi yang menerapkan kebijakan Pembatasan Sosial Berskala Besar (PSBB). Kebijakan PSBB menyebabkan terjadinya penutupan seluruh aktivitas wisata selama dua bulan dan perubahan pendapatan di Dunia Air Tawar dan Museum Serangga Taman Mini Indonesia Indah (TMII). Setelah dibuka kembali, kawasan wisata ini menerapkan protokol kesehatan sesuai panduan Cleanliness, Health, Safety and Enviromental Sustainability (CHSE). Tujuan dari penelitian ini adalah: (1) Mengestimasi dampak ekonomi sebelum dan sesudah Covid-19 di Dunia Air Tawar dan Museum Serangga, (2) Menghitung kapasitas daya dukung kawasan sebelum dan sesudah penerapan protokol kesehatan sesuai prinsip CHSE di Dunia Air Tawar dan Museum Serangga, (3) Menyusun strategi pengelolaan kawasan wisata Dunia Air Tawar dan Museum Serangga yang sesuai dengan panduan CHSE. Metode pada penelitian ini adalah analisis deskriptif, Loss of Earnings, dan Analitycal Hierarchy Process (AHP). Hasil penelitian menunjukkan bahwa pandemi Covid-19 menyebabkan menurunnya pendapatan dari pengelola wisata Dunia Air Tawar dan Museum Serangga, unit usaha dan tenaga kerja. Daya dukung kawasan wisata ini berada pada under carrying capacity dengan daya dukung kawasan sebelum Covid-19 sebesar 2.051 orang/hari dan 1.148 orang/hari setelah Covid-19. Alternatif strategi pengelolaan yang akan dilakukan adalah pengembangan Prosedur Operasional Baku (POB) kebersihan, kesehatan, keselamatan dan kelestarian lingkungan kawasan wisata., Jakarta is the provinces that implements the large-scale social restrictions (PSBB) policy. PSBB policy caused the closure of all tourist activities for two months thus impact to the income at Dunia Air Tawar and Insect Museum TMII. After reopening, this tourist area implemented health protocols according to the Cleanliness, Health, Safety and Enviromental Sustainability (CHSE) guidelines. The aims of this research are: (1) to estimate the economic impacts of Dunia Air Tawar and Insect Mueseum before and after Covid-19, (2) to calculate the carrying capacity of of Dunia Air Tawar and Insect Mueseum’s area before and after the implementation of the CHSE and health protocols, (3) to formulate the management strategy for Dunia Air Tawar and Insect Museum with the CHSE guidelines. The results of this research show that Covid-19 has caused a decrease of income in Dunia Air Tawar and Insect Museum, business units and labors. Dunia Air Tawar and Insect Museum are under carrying capacity, where the carrying capacity of this area before Covid-19 was 2.051 people/day and 1.148 people/day after Covid-19. The alternative management strategy chosen is the development of Standard Operational Procedure (SOP) for cleanliness, health, safety and environmental sustainability of tourist areas.
Keyword: Dunia Air Tawar, educational tourism area, Insect Museum, social distancing

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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