Judul: Analisis Kualitas Platform E-marketplace Terhadap Loyalitas Pelanggan (Studi Kasus: Pengguna Shopee).
Abstrak: Kehadiran pelaku e-marketplace membawa pengalaman baru dalam hal berbelanja. Pelanggan berperan dalam menentukan tingkat keberhasilan sebuah emarketplace yang dipasarkan. Tujuan dari penelitian ini adalah mengidentifikasi karakteristik dari pengguna Shopee dan menganalisis dimensi dari e-service quality, kepercayaan dan kepuasan pelanggan yang paling dominan berpengaruh pada loyalitas pelanggan. Data primer dari penelitian ini adalah dengan menyebarkan kuesioner secara online melalui Google Form dengan didukung oleh data sekunder yaitu diantaranya buku, jurnal serta website. Penelitian ini diolah dengan metode model persamaan struktural (Structural Equation Modelling) melalui pendekatan Partial Least Square (PLS). Hasil penelitian menyatakan bahwa dimensi reliabilitas dengan indikator fitur-fitur yang mudah digunakan dan inovatif pada variabel EService Quality berpengaruh signifikan terhadap Loyalitas Pelanggan.
Keyword: e-marketplace, e-service quality, loyalitas pelanggan, kepercayaan, kepuasan pelanggan.

Judul: Shopee E-commerce Customer Loyalty Model on Erigo
Abstrak: Fashion products are one of the favorite products that consumers look for when shopping online. Erigo, as a brand that sells its effects on the online marketplace Shopee has several problems, especially those related to consumer loyalty and satisfaction resulting from a shopping experience that needs to meet expectations. Based on a pre-survey conducted on 30 consumers who had purchased Erigo products, 50% of consumers were declared disloyal, 30% of consumers were stated to be dissatisfied, 47% of consumers were declared to have lost trust, and 43% of consumers were reported not to be committed to Erigo's company. This research aims to see the relationship between satisfaction, trust, and commitment to loyalty based on consumer experience Erigo. This research was conducted from March – June 2022 on respondents who bought Erigo products at the Shopee marketplace using a voluntary sampling technique. The total number of respondents in this study amounted to 347 people. The independent variable in this study is customer experience, while the dependent variable is customer satisfaction, customer trust, customer commitment, and customer loyalty. Primary research data obtained from questionnaires were processed using the SEM-PLS method in the Smart-PLS application. Based on the results of the SEM-PLS bootstrapping, several aspects of customer experience have a significant effect on customer satisfaction, including competence, helpfulness, personalization, and value for time. On the other hand, there are several aspects of the customer experience that do not have a significant effect on Erigo's customer satisfaction in the marketplace, including aspects of accessibility, customer recognition, problem-solving, and promise fulfillment. Based on the research results, several consumer experiences influence customer satisfaction, such as products that are easily accessible and purchased using payment methods that suit preferences, good Erigo product designs, detailed information on the products being sold, along with the terms and conditions of the promos they provide. Erigo also has standardization of the products they sell at Shopee. In terms of product delivery, Erigo is able to provide consumers with products according to their orders. On the other hand, there are still some unfavorable consumer experiences, such as difficulty finding product references and accessing customer service assistance. Based on the research results, customer trust and commitment statistically significantly affect customer loyalty. Meanwhile, customer satisfaction does not affect consumer loyalty. This can be influenced by several factors, for example, low consumer loyalty to e-commerce platforms, fashion products with many competing and substitute products, and the lack of emotional value a brand provides
Keyword: Experience, Loyalty, Marketplace, Satisfaction, SEM-PLS

Judul: Study of Tupaia javanica Hepatocytes Culture as In Vitro Replication Media of Nonhuman Primate HBV
Abstrak: Virus hepatitis B (VHB) adalah virus DNA yang menginfeksi organ hati sebagai target utama. Infeksi ini menyebabkan hepatitis yang dapat bersifat kronis dan berlanjut menjadi sirosis, kanker hati bahkan kematian. Pengembangan model in vivo dan in vitro berkaitan dengan hepatitis B menjadi perhatian khusus bagi para peneliti. Kultur hepatosit banyak digunakan untuk mempelajari berbagai ha] terkait hepatitis B baik dari aspek virus, penyakit, pencegahan, dan pengobatan. Pengembangan hepatosit asal hewan kecil sepe1ii Tupaia sp. untuk model in vitro merupakan salah satu altematif dalam penyediaan kultur hepatosit. Tujuan penelitian ini adalah mengembangkan kultur primer dan lestari hepatosit T. javanica yang mampu mendukung replikasi VHB orangutan (OuHBV) dan VHB owa jawa (GiHBV), dan dapat menjawab kebutuhan akan model in vitro kultur hepatosit. Isolasi hepatosit T. javanica dilakukan dengan prosedur sebagai berikut: organ hati yang telah dicacah dalam cawan petri dengan larutan perfusi, diinkubasi pada 37 °C. Suspensi disentrifugasi 300-500 g sehingga didapatkan pelet sel hati. Pelet yang sudah dicuci kemudian diresuspensi dengan Hepatocyte Basal Media untuk menumbuhkan hepatosit dan selanjutnya hepatosit akan ditransformasi menggunakan perangkat Lenti-SV 40. Sodium taurocholate cotransporting polypeptide (NTCP) yang diindikasikan sebagai reseptor hepatosit untuk melekatnya VHB, nampak pada hepatosit baik pada kultur primer maupun kultur yang ditransformasi. Reseptor hepatosit spesifik ini terlihat sebagai pendaran hijau dengan uji imunofluoresensi. Kultur hepatosit primer T. javanica berhasil dikembangkan selama 14 hari untuk mencapai kepadatan 80%, dan inokulasi GiHBV dan OuHBV ke dalam kultur pada hari ke-15 menunjukkan adanya replikasi virus hingga hari ke-8 (berdasarkan hasil PCR). Kuantifikasi virus dengan real-time PCR memperlihatkan replikasi tertinggi pada hari kedua setelah inokulasi. Penjajaran sebagian protein permukaan setelah virus dinokulasikan memperlihatkan kesamaan asam amino dengan virus wild type sebesar 99.29% dan 95.71 % pada GiHBV dan OuHBV., Hepatitis B virus (HBV) is a DNA virus which infects liver as primary target organ. This i11fection causes hepatitis which could become chronic and progress to cirrhosis, liver cancer and even death. Development of in vitro and in vivo model related to hepatitis B is a concern for researchers. Hepatocyte cultures widely used to study a variety of aspects of hepatitis B such as the virus, disease, prevention and treatment. Development qf hepatocyte from small animal e.g. Tupaia sp. for the in vitro model is an alternative of hepatocyte cultures. The purpose of the study is to develop primary and immortal T. javanica hepatocytes cultures capable to replicate orangutan HBV (OuHBV) and javan gibbon HBV (GiHBV), and to answer the need for in vitro model ofhepatocytes. Isolation of hepatocytes from T. javanica was done as followed: mincedliver were transported into petri dish containing perfusion buffer solution to be incubated at 37 °C. The suspension was centrifuged at 300-500 g to obtain liver cell pellets. The washed-pellet was resuspended in Hepatocyte Basal Media to let specific hepatocytes grow and later be transformed by Lenti-SV40 kit. Sodium taurocholate cotransporting polypeptide (NTCP) has been ident(fied as hepatocyte receptor for HBV attachment, and was seen on hepatocytes from both primary and transformed cultures. This hepatocytes specific receptor was shown as green luminenscent by immunofluorescence assay. Primary T. javanica hepatocytes cultures was successfully maintained for
Keyword: Tupaia javanica, in vitro model, hepatocytes culture, hepatitis B virus, Liver cancer, Picornaviridae, Hepadanaviridae, Flaviviridae, Caliciviridae