Judul: The Influence of BTS as a Brand Ambassador on Brand Image and Purchase Intention of Comsumers Tokopedia in Indonesia
Abstrak: Mewabahnya virus corona menyebabkan terjadinya perubahan yang cukup signifikan, salah satunya kegiatan belanja. Mengawali tahun 2021, Tokopedia menggandeng boysgroup Korea, Bangtan Sonyeondan (BTS) sebagai brand ambassadornya. Tokopedia merupakan perusahaan e-commerce yang terus melakukan pengembangan strategi marketing untuk mendongkrak loyalitas dan minat beli konsumennya. Tujuan dilakukan penelitian ini ialah untuk mengidentifikasi karakteristik konsumen pengguna platform Tokopedia, menganalisis pengaruh brand ambassador terhadap brand image, menganalisis pengaruh brand ambassador terhadap minat beli konsumen, serta menganalisis pengaruh brand image terhadap minat beli konsumen. Metode analisis data yang digunakan adalah analisis deskriptif dan analisis SEM-PLS. Hasil penelitian menunjukkan bahwa terdapat pengaruh antara variabel brand ambassador terhadap brand image serta variabel brand image terhadap minat beli konsumen, sedangkan antara variabel brand ambassador terhadap minat beli konsumen tidak memiliki pengaruh., The outbreak of the corona virus has caused significant changes, one of which is shopping activities. Starting 2021, Tokopedia collaborates with the Korean boy group, BTS as its brand ambassador. Tokopedia is an e-commerce company that continues to develop marketing strategies to boost consumer loyalty and buying interest. The purpose of this research is to identify consumer characteristics of users of the Tokopedia platform, analyze the influence of brand ambassadors on brand image, analyze the influence of brand ambassadors on consumer purchase intention, and analyze the influence of brand image on consumer purchase intention. The data analysis method used is descriptive analysis and SEM-PLS analysis. The results showed that there was an influence between brand ambassador variables on brand image and brand image variables on consumer purchase intention, while between brand ambassador variables on consumer purchase intention had no effect.
Keyword: Brand ambassador, Brand image, BTS, Purchase intention, Tokopedia

Judul: Pengaruh Brand Ambassador Terhadap Brand Image Tokopedia (Studi pada Mahasiswa Fakultas Ekonomi dan Manajemen IPB).
Abstrak: Tokopedia.com merupakan perusahaan marketplace Indonesia yang menjual berbagai macam kebutuhan sehari-hari dengan berbagai merek. Tokopedia mengandalkan brand ambassador sebagai penyampai informasi produknya. Tokopedia menggandeng Isyana Sarasvati sebagai brand ambassador untuk mempertahankan eksistensinya dan meningkatkan penjualannya di dunia bisnis online. Tujuan penelitian ini menganalisis pengaruh brand ambassador terhadap brand image Tokopedia secara parsial maupun secara bersama-sama, atribut brand ambassador meliputi daya tarik dan kredibilitas. Pengambilan contoh non probablity sampling dengan metode purposive sampling pada 97 Mahasiswa Fakultas Ekonomi dan Manajemen Institut Pertanian Bogor. Metode analisis yang digunakan adalah analisis deskriptif dan regresi linear berganda yang dilengkapi dilengkapi dengan uji F dan uji t. Hasil penelitian menunjukan atribut brand ambassador berpengaruh nyata terhadap brand image Tokopedia, dengan nilai koefisien determinasi 39.8%, dan sisanya (60.2%) dijelaskan oleh faktor-faktor yang lain yang tidak diteliti.
Keyword: brand ambassador, brand image, daya tarik, kredibilitas, tokopedia

Judul: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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