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Gaining a deeper understanding of the meaning of the carelessness parameter in the 4PL IRT model and strategies for estimating it Pardede, Timbul; Santoso, Agus; Diki, Diki; Retnawati, Heri; Rafi, Ibnu; Apino, Ezi; Rosyada, Munaya Nikma
REID (Research and Evaluation in Education) Vol. 9 No. 1 (2023)
Publisher : Graduate School of Universitas Negeri Yogyakarta & Himpunan Evaluasi Pendidikan Indonesia (HEPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/reid.v9i1.63230

Abstract

Three popular models are used to describe the characteristics of the test items and estimate the ability of examinees under the dichotomous IRT model, namely the one-, two-, and three-parameter logistic models. The three-item parameters are discriminating power, difficulty, and pseudo-guessing. In the development of the dichotomous IRT model, carelessness or upper asymptote parameter was proposed, which forms a four-parameter logistic (4PL) model to accommodate a condition where a high-ability examinee gives an incorrect response to a test item when he/she should be able to respond to the test item correctly. However, the carelessness parameter and the 4PL model have not been widely accepted and used due to several factors, and people's understanding of that parameter and strategies for estimating it is still inadequate. Therefore, this study aims to shed light on ideas underlying the 4PL model, the meaning of the carelessness parameter, and strategies used to estimate that parameter based on the extant literature. The focus of this study was then extended to demonstrating practical examples of estimating item and person parameters using the 4PL model using empirical data on responses of 1,000 students from the Indonesia Open University (Universitas Terbuka) on 21 of 30 multiple-choice items on the Business English test, a paper-and-pencil test. We mainly analyzed empirical data using the "˜mirt' package in RStudio. We present the analysis results coherently so that IRT users would have a sufficient understanding of the 4PL model and the carelessness parameter, and they can estimate item and person parameters under the 4PL model.
Analisis Motivasi Kerja dan Kinerja Karyawan Divisi Marketing pada PT. BPRS Fajar Sejahtera Bali Diki, Diki; Kusjuniati, Kusjuniati; Iswahyuni, Iswahyuni
Maisyatuna Vol. 4 No. 1 (2023): Januari: Jurnal Maisyatuna
Publisher : STAI Denpasar Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53958/mt.v4i1.86

Abstract

Motivation in a company is very important to be able to move all the power and limits of human capabilities and other facilities. The right motivation will be able to advance and develop the company. The problem of motivation in a company is the responsibility of management to create, organize and implement it, so management must be able to create motivation that is able to foster people's motives so that they want to act according to the company's wishes. The objectives of this study are: 1). Knowing the work motivation of employees of the marketing division at PT. BPRS Fajar Sejahtera Bali. 2) Knowing the performance of the employees of the marketing division at PT. BPRS Fajar Sejahtera Bali. This research method is descriptive qualitative. Data collection techniques, namely observation, interviews and documentation. The informants in this study were the Head of Marketing Division and eight marketing staff at PT. BPRS Fajar Sejahtera Bali, the procedure for determining informants by means of purposive sampling. Marketing division at PT. BPRS Fajar Sejahtera Bali has the following motivations: There is a work environment that has a positive influence on employees, there is protection and security provided by the company in the form of BPJS Health and Employment, and the company provides a form of recognition or respect for employees who excel and have company leaders who are competent in their fields, 2) Marketing division at PT. BPRS Fajar Sejahtera Bali has the following motivations: There is a work environment that has a positive influence on employees, there is protection and security provided by the company in the form of BPJS Health and Employment, and the company provides a form of recognition or respect for employees who excel and have company leaders who are competent in their fields, 2) Employee performance of the marketing division of PT. BPRS Fajar Sejahtera Bali still has not reached the company standards presented, employees are still not optimal in carrying out their duties and responsibilities.
Jejak Emas Hitam di Balikpapan: Mengedukasi Ilmu Dasar Migas untuk Siswa SMAN 7 Balikpapan Nugraha, Moh Rifai; Asmara, Lingga; N.S.T, Ademark; Marvin, Naldy; Diki, Diki; Prasetya, Kiftian Hady
Solusi dan Inovasi Pengabdian Kepada Masyarakat Vol. 1 No. 3: Februari 2026
Publisher : PT. SOLUTIVA PUSTAKA RAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.66602/solutiva.v1i3.22

Abstract

Pengenalan ilmu dasar mengenai minyak dan gas merupakan langkah awal dalam meningkatkan literasi energi di kalangan generasi muda, khususnya di daerah yang memiliki keterkaitan erat dengan industri migas seperti Balikpapan. Penelitian ini bertujuan untuk meningkatkan pemahaman siswa terhadap sektor migas melalui kegiatan edukatif berupa pemaparan materi dan presentasi interaktif di SMAN 7 Balikpapan. Tujuan dari penelitian ini adalah untuk mengetahui sejauh mana kegiatan edukasi berbasis presentasi dapat membentuk kesadaran dan pemahaman siswa tentang peran strategis sektor migas dalam pembangunan nasional serta dampaknya terhadap lingkungan dan masyarakat. Metode yang digunakan adalah pendekatan deskriptif dengan observasi langsung terhadap antusiasme, partisipasi, serta umpan balik lisan dari siswa selama dan setelah kegiatan berlangsung. Hasil kegiatan menunjukkan bahwa presentasi materi migas yang dikemas secara komunikatif dan kontekstual mampu meningkatkan minat siswa terhadap isu-isu energi serta menumbuhkan sikap kritis dan peduli terhadap pemanfaatan sumber daya alam secara berkelanjutan. Edukasi semacam ini diharapkan dapat menjadi jembatan antara industri migas dan masyarakat melalui dunia pendidikan.