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All Journal Jurnal Ekonomi Modernisasi Syntax Literate: Jurnal Ilmiah Indonesia JABE (Journal of Applied Business and Economic) Iqtishoduna: Jurnal Ekonomi Islam Maker: Jurnal Manajemen Jurnal Manajemen Jurnal Ilmiah Manajemen Kesatuan Didaktik : Jurnal Ilmiah PGSD STKIP Subang Journal of Management and Bussines (JOMB) Journal Economic and Strategy (JES) Jurnal Bisnis Mahasiswa Jurnal Pengabdian Masyarakat Bestari (JPMB) Journal of Agriculture (JoA) International Journal of Advanced Multidisciplinary International Journal of Business and Applied Economics (IJBAE) Journal of Artificial Intelligence and Digital Business Indonesian Journal of Advanced Social Works (DARMA) Jurnal Pengabdian Pada Masyarakat METHABDI Jurnal Penelitian Pendidikan Indonesia Jurnal Social Society Jurnal Ilmiah Accusi Manajemen : Jurnal Ekonomi International Journal of Business and Quality Research International Journal of Economics, Business and Innovation Research Management Dynamics: International Journal of Management and Digital Sciences Jurnal Ilmiah METHONOMI Jurnal Ilmu Manajemen METHONOMIX
Siti Normi
Universitas Methodist Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Antaseden Kinerja Pegawai PT. Angkasa Pura II Bandara Silangit Siti Normi Sinurat; Kristanty M N Nadapdap; Thomas Sumarsan Goh; Saur Melianna; Markus Doddy Simanjuntak
Manajemen: Jurnal Ekonomi USI Vol 6 No 3 (2024): Manajemen : Jurnal Ekonomi Vol 6 No 3 November 2024
Publisher : Fakultas Ekonomi Universitas Simalungun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/zcxz2v25

Abstract

Human Resources (HR) are an important asset for every organization, including PT. Angkasa Pura II Silangit Airport, North Sumatra Province. Effective HR management through good leadership and proper training is essential to achieve organizational goals. This study aims to analyze the effect of leadership style and job training on employee performance at PT. Angkasa Pura II Silangit Airport, North Sumatra Province. Data were obtained through a questionnaire filled out by 64 respondents in July 2024, with a response rate of 100%. The results showed that timely job training and participatory leadership styles had a positive and significant impact on employee performance. Ticket sales data showed fluctuations from year to year, which was consistent with the lack of training and leadership style. A study of respondents showed that employee performance can be improved through the opportunity provided by leadership to convey input and complaints. Training that is relevant to operational needs and technological developments has been shown to improve employee competence and productivity. The conclusion of this study is that structured job training and good leadership style significantly improve employee performance at PT. Angkasa Pura II Silangit Airport, North Sumatra Province. Recommendations from this study include the importance of effective communication between management and employees and the development of ongoing training programs to maintain employee competence and motivation. It is hoped that the implementation of these strategies will optimize the overall performance of the organization
The Effect Of Work From Home, Work Discipline And Incentive Giving On Employee Performance At Pt. Astra Internasional, Tbk–Isuzu Medan Kristanty M N Nadapdap; Siti Normi Sinurat; Sondang N B Marbun; Junika Napitupulu; Marsella Peranginangin
Manajemen: Jurnal Ekonomi USI Vol 6 No 3 (2024): Manajemen : Jurnal Ekonomi Vol 6 No 3 November 2024
Publisher : Fakultas Ekonomi Universitas Simalungun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/ek8hwp02

Abstract

This study aims to determine the effect of work from home, work discipline and incentives on employee performance at PT. Astra Internasional, Tbk - Isuzu Medan. This type of research uses quantitative research. The number of samples in this study was 37 respondents. Based on the results of the t hypothesis test, it can be concluded that work from home has a positive and significant effect on employee performance, with a tcount value of 2.769> ttable 2.036 and a sig value of 0.009 <0.05, work discipline has a positive and significant effect on employee performance, with a tcount value of 2.205> ttable 2.036 and a sig value of 0.035 < 0.05, and incentives have a positive and significant effect on employee performance, with a tcount value of 2.428> ttable 2.036 and a sig value of 0.021 <0.05. Based on the results of the F hypothesis test, it can be concluded that simultaneously work from home, work discipline and incentive provision have a positive and significant effect on employee performance, with the Fcount value> Ftable, which is 13,369> 2.89 and the significance value F < significance value (0.000 <0.05). Based on the results of the R2 test, it can be concluded that the R2 value is 0.549 (54.9%) which means that the variation in employee performance values ​​is determined by the role of variations in work from home values, work discipline and incentive provision
THE INFLUENCE OF COMMUNICATION, INDIVIDUAL CHARACTERISTICS AND RESPONSIBILITIES ON THE PERFORMANCE OF EMPLOYEES OF THE REGIONAL PLANNING, RESEARCH AND DEVELOPMENT AGENCY OF THE CITY OF PEMATANG SIANTAR Siti Normi; Kristanty M N Nadapdap; Saur Melianna; Markus Doddy Simanjuntak; Angelina Sianipar
Manajemen: Jurnal Ekonomi USI Vol 7 No 1 (2025): Manajemen : Jurnal Ekonomi
Publisher : Fakultas Ekonomi Universitas Simalungun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/fta85g85

Abstract

The purpose of this study is to determine and analyze the influence of communication, individual characteristics and responsibilities on the performance of employees of Bappeda Kota Daerah Kota Pematang Siantar. The type of data is quantitative data with a saturated sample of 42 respondents. Communication has a positive and partially significant effect on the performance of Bappeda Kota Pematang Siantar employees. Individual characteristics partially have a positive and significant effect on the performance of Bappeda Kota Pematang Siantar employees. Partial responsibility has a positive and significant effect on the performance of Bappeda employees in Pematang Siantar City. This study concluded that communication, individual characteristics, responsibilities simultaneously have a positive and significant effect on the performance of employees of the Regional Planning, Research and Development Agency of Pematang Siantar City
Pengaruh Employee Engagement, Inklusivitas Organisasi, Dan Kolaborasi Terhadap Loyalitas Pegawai Pada Badan Kepegawaian dan Pengembangan Sumber Daya Manusia (BKPSDM) Kota Medan Barus, Yossi Br; Normi, Siti; Panjaitan, Maludin
JOURNAL ECONOMICS AND STRATEGY Vol 6 No 1 (2025): Januari - Juni 2025
Publisher : Fakultas Ekonomi Dan Bisnis Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to test and analyse the effect of employee engagement, organisational inclusiveness, and collaboration on employee loyalty at the Medan City Human Resources Staffing and Development Agency. The research method used in this research is quantitative descriptive research method. The sample in this study were all employees of the Civil Service Agency and Human Resources Development of Medan City, totalling 67 employees because of the small sample size, the authors used the saturated sampling technique. Based on the results of the t hypothesis test, it can be concluded that employee engagement has a positive and significant effect on employee loyalty, organisational inclusiveness has a positive and significant effect on employee loyalty, collaboration has a positive and significant effect on employee loyalty. Based on the results of the F hypothesis test, it can be concluded that employee engagement, organisational inclusiveness, and collaboration simultaneously have a positive and significant effect on employee loyalty. Based on the results of the coefficient of determination analysis, the Adjusted R Square is 0.685, which means that the employee loyalty variable can be explained by the employee engagement, organisational inclusiveness, and collaboration variables in this study by 68.5%, while the remaining 31.5% is other variables or factors.
Pelatihan Kiat-Kiat Menambah Pendapatan Rumah Tangga Gultom, Robinhot; Sinaga, Anton A. P.; Sihite, Mislan; Silalahi, Sahat P. Remus; Normi, Siti; Melianna, Saur; Rajagukguk, Tiur; Marbun, Sondang Ni Bulan; Siregar, Selamat; Panggabean, Toman; Saragih, Rintan; Sitohang, Rommel
Jurnal Pengabdian Pada Masyarakat METHABDI Vol 4 No 1 (2024): Jurnal Pengabdian Pada Masyarakat METHABDI
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methabdi.Vol4No1.pp85-88

Abstract

Lingkungan VIII, Babura Village, Medan Baru District consists of six sub-districts in Medan Baru District. Lingkungan VIII is one of the wards in Babura Village out of 13 wards in this subdistrict. The Community Service Team (PKM) provides enlightenment to mothers in order to increase their income. In general, mothers in the neighborhood live at home and therefore the PKM Team provides a way to increase their income. The aim of this PKM is to train mothers to do business or entrepreneurship and motivate mothers to become entrepreneurs. Mothers are expected to have creative ideas by being able to process various preparations using cheap basic ingredients, such as bananas, cassava and the modern cake business. The results of this processing are used as an idea to be used as an opportunity for entrepreneurship to increase household income.
Pengaruh Kepemimpinan Etikal, Komitmen Organisasi, Organizational Citizenship Behaviour Dan Kepuasan Kerja Terhadap Kinerja Pegawai Pada Perusahaan Daerah Air Minum Tirtana di Provinsi Sumatera Utara Cabang Tuasan Medan Gurusinga, Apandi Agape; Normi, Siti; Siregar, Selamat
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.934

Abstract

Penelitian ini untuk menguji dan menganalisis Pengaruh Kepemimpinan Etikal, Komitmen Organisasi, Organizational Citizenship  Behaviour (Ocb) Dan Kepuasan Kerja  Terhadap Kinerja Pegawai Pada Perusahaan Daerah Air Minum Tirtanadi Provinsi Sumatera Utara Cabang Tuasan Medan Terhadap Kinerja Pegawai pada Perusahaan Air Minum Tirtanadi Provinsi Sumatera Utara Cabang Tuasan Medan. Penetapan sampel dengan sampel jenuh dengan jumlah 90 orang pegawai. Analisis data regresi linier berganda. Hasil secara parsial, ikepemimpinan ietikal iberpengaruh itidak isignifikan iterhadap ikinerja ipegawai, ikomitmen iorganisasi i iberpengaruh isignifikan iterhadap ikinerja ipegawai, iorganizational icitizenship ibehaviour iberpengaruh itidak isignifikan iterhadap ikinerja ipegawai dan ikepuasan ikerja iberpengaruh isignifikan iterhadap ikinerja ipegawai, Secara simultan, ikepemimpinan ietikal, ikomitmen iorganisasi, iOrganizational iCitizenship iBehaviour i idan ikepuasan ikerja imemiliki ipengaruh iyang isignifikan iterhadap ivariabel ikinerja ipegawai.. Nilai Adjusted iR2 isebesar i0,606iberarti i60,6% ivariabel ikinerja ipegawai i(Y) iPerusahaan iDaerah iAir iMinum i(PDAM) iTirtanadi iProvinsi iSumatera iUtara iCabang iTuasan idapat idijelaskan ivariabel ikepemimpinan ietikal i(X1), ikomitmen iorganisasi i(X2), iOrganizational iCitizenship iBehaviour i(X3) idan ikepuasan ikerja i(X4). iSedangkan isisanya isebesar i39,04% idapat idijelaskan ioleh ivariabel-variabel ilain iyang itidak iditeliti idalam ipenelitian iini.
Pengaruh Persepsi Harga, Diferensisiasi Produk, Dan Citra Merek Terhadap Keputusan Pembelian Produk Skincare Wardah Dikalangan Mahasiswa Fakultas Ekonomi Methodist Indonesia Bukit, Hizkia Bremana; Sinurat, Siti Normi; Siregar, Selamat
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.937

Abstract

Penelitian ini bertujuan untuk mengetahui dan menganalisis pengaruh persepsi harga, diferensiasi produk, dan citra merek terhadap keputusan pembelian produk skincare Wardah di kalangan mahasiswa Fakultas Ekonomi Universitas Methodist Indonesia. Jenis penelitian yang digunakan dalam penelitian ini adalah metode kuantitatif. Penelitian Kuantitatif adalah jenis penelitian yang sistematis, tersturktur sehingga penelitian ini memiliki kecenderungan untuk menggunakan teknik analisis angka -angka yang dapat dihitung maupun diukur. Sampel dalam penelitian ini sebanyak 90 responden. Berdasarkan hasil uji hipotesis t dapat disimpulkan persepsi harga secara parsial berpengaruh positif dan signifikan terhadap keputusan pembelian, difrensiasi produk secara parsial berpengaruh positif dan signifikan terhadap keputusan pembelian, citra merek secara parsial berpengaruh positif dan signifikan terhadap keputusan pembelian. Berdasarkan hasil uji hipotesis F dapat disimpulkan persepsi harga, difrensiasi produk, dan citra merek secara bersama-sama atau simultan berpengaruh signifikan terhadap keputusan pembelian. Berdasarkan hasil analisis koefisien determinasi diketahui nilai koefisien determinasi (adjusted R-square) adalah 0,604. maka dapat disimpulkan  persepsi harga, difrensiasi produk, dan citra merek dapat mempengaruhi keputusan pembelian sebesar 60,4% sisanya sebesar 29,6% dijelaskan oleh variabel atau faktor lainnya.
Pengaruh Kompetensi, Kerjasama Tim, dan Pelatihan Kerja Terhadap Prestasi Kerja Karyawan Pada Perusahaan Umum Daerah Pasar Medan Petisah Sipahutar, Bangkit Johannes Yabes; Sinurat, Siti Normi; Panjaitan, Maludin
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.1135

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh kompetensi, kerjasama tim, dan pelatihan kerja terhadap prestasi kerja karyawan pada Perusahaan Umum Daerah Pasar Medan Petisah. Metode analisis data yang digunakan dalam penelitian ini adalah analisis data deskriptif kuantatif. Berdasarkan hasil perhitungan sampel dengan rumus slovin, maka jumlah sampel penelitian yang dibulatkan menjadi 80 responden. Metode analisis data yang digunakan adalah analisis regresi linier berganda. Berdasarkan hasil uji hipotesis t dapat disimpulkan kompetensi berpengaruh signifikan terhadap prestasi kerja karyawan, kerjasama tim berpengaruh signifikan terhadap prestasi kerja karyawan, pelatihan kerja berpengaruh signifikan terhadap prestasi kerja karyawan. Berdasarkan hasil uji hipotesis F dapat disimpulkan kompetensi, kerjasama tim, dan pelatihan kerja secara simultan berpengaruh signifikan terhadap prestasi kerja karyawan. Berdasarkan hasil analisis koefisien determinasi diperoleh nilai Adjusted R square sebesar 0,814 (81,4%). Maka dapat disimpulkan sebesar 81,4% prestasi kerja karyawan dipengaruhi oleh kompetensi, kerjasama tim, dan pelatihan kerja, sisanya 100%-81,4% = 18,6% dijelaskan oleh faktor lain yang tidak diteliti dalam penelitian ini.
Pengaruh Pelatihan, Budaya Inovasi, Dan Motivasi Terhadap Produktivitas Karyawan Pada PT Bahma Putra Mandiri Kecamatan Merek Kabupaten Karo Tarigan, Briprona; Sinurat, Siti Normi; Panjaitan, Maludin
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.760

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh antara pelatihan, budaya inovasi dan motivasi dalam meningkatkan produktivitas karyawan pada PT. Bahma Putra Mandiri Kecamatan Merek. Jenis data yang digunakan dalam penlitian ini dilakukan dengan menggunakan metode deskriptif kuantitatif. Sampel dalam penelitian ini adalah karyawan PT. Bahma Putra Mandiri Kecamatan Merek Kabupaten Karo yaitu sebanyak 63 karyawan. Metode analisis data yang digunakan adalah analisis regresi linier berganda. Berdasarkan hasil uji hipotesis t dapat disimpulkan bahwa pelatihan secara parsial berpengaruh positif dan signifikan terhadap produktivitas karyawan, budaya inovasi secara parsial berpengaruh positif dan signifikan terhadap produktivitas karyawan, motivasi secara parsial berpengaruh positif dan signifikan terhadap produktivitas karyawan.  Berdasarkan hasil uji hipotesis F dapat disimpulkan secara simultan pelatihan, budaya inovasi, dan motivasi berpengaruh signifikan terhadap produktivitas karyawan. Berdasarkan hasil analisis koefisien determinasi diperoleh nilai Adjusted R Square sebesar 0,649 yang berarti bahwa sebesar 64,9%% variabel produktivitas karyawan dapat dijelaskan oleh pelatihan, budaya inovasi, dan motivasi sisanya 100%-64,9% = 35,1% dijelaskan oleh variabel atau faktor lain yang tidak disebutkan dalam penelitian ini.
Pengaruh Social Media Khususnya Instagram, Influencer Marketing, Dan Digital Marketing Untuk Meningkatkan Brand Awareness Sirait, Eli Seba; Sinurat, Siti Normi; Saragih, Henri
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.796

Abstract

Penelitian ini bertujuan untuk mengetahui dan menganalisis pengaruh social media khususnya instagram, influencer marketing, digital marketing terhadap brand awarness pada Jims Honey Medan. Jenis penelitian yang digunakan dalam penelitian ini adalah pnelitian kuantitatif. Penelitian kuantitatif merupakan metode penelitian yang berkaitan dengan angka yang dianalisis menggunakan statistik. Sampel dalam penelitian ini sebanyak 96 responden. Teknik pengumpulan data dalam penelitian ini adalah kuesioner (angket) melalui google form yang diisi oleh konsumen Jims Honey Medan. Berdasarkan uji hipotesis parsial (Uji t) maka dapat disimpulkan social media marketing khususnya instagram secara parsial berpengaruh positif dan signifikan terhadap brand awareness, influencer marketing secara parsial berpengaruh positif dan signifikan terhadap brand awareness, digital marketing secara parsial berpengaruh positif dan signifikan terhadap brand awareness. Berdasarkan uji hipotesis simultan (Uji F) maka dapat disimpulkan social media marketing khususnya instagram, influencer marketing, dan digital marketing secara simultan berpengaruh positif dan signifikan terhadap brand awareness. Hasil dari nilai Adjusted R Square sebesar 0,544 yang berarti bahwa sebesar 54,4%% variabel brand awareness dapat dipengaruhi oleh variabel social media marketing khususnya instagram, influencer marketing, dan digital marketing.
Co-Authors Agnes Imelda Manurung Aldri Frinaldi Angelina Sianipar Anton A. P. Sinaga Aritonang, Isabella Landini Arthur Simanjuntak Barus, Yossi Br Betania Yosiavina Boyke W. H. Lumban Tobing Br. Saragih, Rintan Bukit, Hizkia Bremana Butar-Butar, Hotlan Donny Ivan Samuel Simatupang Donny Simatupang Duma Rahel Situmorang, Duma Rahel Efbertias Sitorus Elperida Juniarni Sinurat Endy Juli Anto Ezekiel B. Sitorus Fachrial, Peppy Farida Sagala Fauzi Jaya Sakti, Reza Fauzi, Tengku M. Ginting, Elby Randa Br Ginting, Mitha C Ginting, Mitha Christina Gurusinga, Apandi Agape Helena Tatcher Pakpahan Henri Saragih Henri Saragih, Henri Himpun Panggabean Hutabarat, Jansen Hutapea, Kenal P. Irawan P, Hengki Jamaluddin Jansen Hutabarat Jeudi A. T. P. Sianturi Jhoni Maslan Jon H. Purba Jon Henri Purba Jones Simatupang Junika Napitupulu Junika Napitupulu Kristanty M N Nadapdap Kristanty M N Nadapdap Kristanty M N Nadapdap Kristanty Natalia Marina Nadapdap, Kristanty Natalia Marina M Doddy Simanjuntak Maludin Panjaitan Maludin Panjaitan Mangasa Panjaitan Mangasa Panjaitan Mangasa Panjaitan, Mangasa Marbun, Sondang N. B. Marbun, Sondang Ni Bulan Markus Doddy Simanjuntak Markus Doddy Simanjuntak Marsella Peranginangin Melanthon Rumapea Mendarissan Aritonang Minar Siregar Mislan Sihite, Mislan Mohd Noh, Mohd Shahid Bin Mufria J. Purba Nababan, Manaor Bismar Posman Nadapdap, Kristanty M N Nadapdap, Kristanty M. N. Nadapdap, Kristanty M.N Nadeak, Heri Panataria, Lince Romauli Panggabean, Toman Panggabean, Toman E. Panjaitan, Monica Penelope Panjaitan, Rike Yolanda Pardede, Marissa Isabella Purba, Michael Jonly Purba, Rizky Febrian Pangihutan Putri Yuni Siallagan Rapika Natalia Tambunan Rasmulia Sembiring Rasmulia Sembiring Rena Nainggolan Rijois I. E. Saragih Rini Sinaga Rintan Saragih Rintan Saragih, Rintan Rio J. Tambunan Rio Junjung Tambunan Robinhot Gultom Romel Sitohang Rommel Sitohang Sagala, Lamria Sahat P. Remus Silalahi Sahat Parulian Remus Silalahi SARAGIH, MEYLIN KRISTINA Saragih, Rintan Br. Saur Meliana Saur Melianna Sipayung, Saur Melianna Selamat Siregar Selamat Siregar Selsa Juita Nababan Septi Kristina Silalahi Septony B. Siahaan Siahaan, Jekson Martiar Sianipar, Reika Juwita Sianturi, Intan Novita Sari Sigalingging, Bahtera Sihite, Duma Sihombing, Parsaoran Silalahi, Sahat P. Remus Silalahi, Santa Lusia Silalahi, Veraci Simanjuntak, Faido M.P. Simanjuntak, Pantas Simatupang, Ade Kezia Simatupang, Aditia Erick Cantona Sinaga, Grace Juliana Sipahutar, Bangkit Johannes Yabes Sirait, Eli Seba Sirait, Jeni Trisnawati Sirait, Kilian Siregar, Jeremia Sitohang, Rommel Sitohang, Ryan Antonius Sitorus, Ragnar Oktavianus Sondang N B Marbun Sondang Ni Bulan Marbun Sondang Nibulan Marbun Sumarsan, Thomas Surbakti, Andre Agasi Tamado Sagala Tamado Simon Sagala Tambunan, Nia Mendawati Tarigan, Briprona Tarigan, Nikholas Thomas Sumarsan Goh Tiur Rajagukguk Tiur Rajagukguk, Tiur Toman Panggabean Vera Triyanti Veraci Silalahi Widya Octavia Ginting Winarto Winarto Winarto Winarto Winarto Yohana Shinta Theresia Yosephine Sembiring