Judul: Efektivitas Media Sosial Instagram sebagai Media Promosi Batik Solo “Inasinul”
Abstrak: Instagram as a social media is used by Batik “Inasinul” to promote their product. The purpose of this study was to analyze the effectiveness of promotional products Batik "Inasinul" via instagram. Another aim is to analyze the factors related promotional effectiveness batik "Inasinul". This study uses a survey supported by quantitative data and qualitative form of an online questionnaire in the form of interviews with business owners as an informant. The results showed that social media instagram effective in stimulating attention, increase knowledge of the respondent will be marketed products, and changing attitudes of respondents from the stage of attention to the stage of interest . In addition, factors associated with the effectiveness of the promotion through the stages of attention, interest, desire, and action that promotional activities conducted via instagram and psychological factors consumers Batik "Inasinul"
Keyword: Bogor Agricultural University, effectiveness, promotion, social media, instagram

Judul: Effectiveness Instagram as a Promotional Media for Jenthik Indonesia MSMEs
Abstrak: Seiring dengan perubahan zaman banyak sekali hal yang dapat diadaptasi, salah satunya yaitu teknologi. Media sosial merupakan hasil dari perkembangan teknologi, beberapa jenis media sosial diantaranya Instagram, TikTok, WhatsApp, dan lain sebagainya. Jenthik Indonesia menggunakan media sosial untuk melakukan promosi terhadap usahanya, sehingga dapat memperluas jangkauan serta menarik konsumen. Adapun tujuan dari penelitian ini adalah untuk menganalisis efektivitas Instagram sebagai media promosi, menelaah hubungan karakteristik konsumen dan hubungan karakteristik konten pada usaha Jenthik Indonesia. Metode yang digunakan dalam penelitian ini adalah pendekatan kuantitatif melalui survei. Responden yang digunakan berjumlah 63 responden. Penelitian ini juga menggunakan pendekatan kualitatif melalui wawancara mendalam dengan informan yaitu CEO dan CMO Jenthik Indonesia. Hasil penelitian menunjukkan bahwa Instagram efektif sebagai media promosi, karakteristik konsumen tidak memiliki hubungan yang signifikan pada efektivitas media promosi, dan karakteristik konten Instagram memiliki hubungan yang nyata dengan efektivitas media promosi., As time changes, many things can be adapted, one of themis technology. Social media is one of technological developments, there are various kinds of social media including Instagram, TikTok, WhatsApp, et cetera. Jenthik Indonesiauses social media to promotional purposes its business, so it can expandtheir reach and attract consumers. This research aims to analyze the effectiveness of Instagram as a promotional media, examine the relationship between consumer and content characteristics in Jenthik Indonesia businesses. The method usedinthis research is a quantitative approach through surveys. The number of respondents used was 63 respondents. This research also uses a qualitativeapproach through in-depth interviewed with CEO and CMO of Jenthik Indonesia. The results of the research show that Instagram is effective as a promotional media, consumer characteristics do not have a significant relationship totheeffectiveness of promotional media, and Instagram content characteristics haveareal relationship with the effectiveness of promotional media.
Keyword: media sosial, efektivitas Instagram, media promosi

Judul: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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