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All Journal Jurnal Pendidikan Jasmani Indonesia Medikora: Jurnal Ilmiah Kesehatan Olahraga Media Statistika Jurnal Ilmu Dasar Diponegoro Journal of Accounting Jurnal Inovasi Pendidikan Kimia Jurnal Keolahragaan GRADIEN Jurnal Tata Kota dan Daerah SEMIRATA 2015 Psikis : Jurnal Psikologi Islami Psikohumaniora: Jurnal Penelitian Psikologi Indonesian Journal of Chemical Science Indonesian Journal of Applied Statistics BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) Motiva: Jurnal Psikologi Teorema: Teori dan Riset Matematika Jurnal SPORTIF : Jurnal Penelitian Pembelajaran Al-Hikmah: Jurnal Agama dan Ilmu Pengetahuan AN-NAFS : Jurnal Fakultas Psikologi Performance PROGRESIF: Jurnal Hukum Jurnal Public Policy JURNAL PUSTAKA KOMUNIKASI Jurnal Sporta Saintika Alayasastra: Jurnal Ilmiah Kesusastraan Cendekia : Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Bumi Raflesia JOSSAE (Journal of Sport Science and Education) Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Jorpres (Jurnal Olahraga Prestasi) Inferensi International Journal of Research in Community Services UNES Journal of Swara Justisia JAGO TOLIS : Jurnal Agrokompleks Tolis Journal of Islamic and Contemporary Psychology Cakrawala: Jurnal Pendidikan Journal of Pragmatics and Discourse Research Jurnal Dunia Pendidikan Indonesian Journal of Information Technology and Computing (IMAGING) Jurnal Pengabdian Journal of Global Strategic Studies Reformasi Hukum Jurnal Ilmu Kehutanan Tanjungpura Journal of Coaching Research Divinitas Jurnal Filsafat dan Teologi Kontekstual The Manager Reveiew Tematik Jurnal Ekonomi dan Pembangunan Indonesia Journal of Statistics and Data Science Jurnal Jurisprudence
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Estimation of Stunting and Wasting in Sumatra 2022 with Nadaraya-Watson Kernel and Penalized Spline Oktarina, Cinta Rizki; Nugroho, Sigit; Sriliana, Idhia; Novianti, Pepi; Sunandi, Etis; Pahlepi, Reza
Inferensi Vol 8, No 3 (2025)
Publisher : Department of Statistics ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27213862.v8i3.23330

Abstract

This study aims to estimate the prevalence of Stunting and Wasting in Sumatra in 2022 using nonparametric regression methods, specifically the Nadaraya-Watson Kernel and Penalized Spline regression models. Both models were applied to assess the relationship between these two correlated response variables and various predictor variables, such as low birth weight, sanitary facilities, poor population, and exclusive breastfeeding. The results showed that the Nadaraya-Watson Kernel regression, particularly using the Gaussian kernel, provided the best fit with minimal prediction error, as indicated by its low Generalized Cross-Validation (GCV) value of 0.024 and high R-squared values (0.9992 for Stunting and 0.9995 for Wasting). In contrast, the Epanechnikov kernel and Biweight kernel produced higher GCV values (0.110 and 0.356, respectively), indicating less optimal performance. For the Penalized Spline model, optimal parameters were determined with a smoothing parameter λ of 5 and 3 knots, which balanced model flexibility and smoothness. This research underscores the potential of nonparametric regression techniques in capturing complex relationships in health data and provides insights for improving interventions aimed at addressing child malnutrition in Indonesia.
Tingkat kebugaran dan hubungan antara detak jantung, air tubuh, gejala dehidrasi pada remaja selama pandemi Sumaryanti; Mulyawan, Rizki; Prasetyo, Yudik; Arjuna, Fatkurahman; Nugroho, Sigit
Jurnal SPORTIF : Jurnal Penelitian Pembelajaran Vol 7 No 3 (2021): Jurnal SPORTIF: Jurnal Penelitian Pembelajaran
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2168.083 KB) | DOI: 10.29407/js_unpgri.v7i3.16586

Abstract

This study was conducted to find out the body response occurred immediately after bleep test after undergoing a pandemic period of more than one year. This research is an analytic observational study with a cross-sectional approach, using the purposive sampling technique. The research subjects were 43 students, 14 women and 29 men with the criteria (1) sports students who were physically active three times a week during the last 1-2 months; (2) no injury or (3) illness in the last 3-7 days. The instruments used are polar heart rate monitor h-10 (measure heart rate), Omron HBF 375 Karada Scan (assess the percentage of water in the body), and urine color scale (dehydration predictor). Data analysis through homogenity test, Kolmogorov-Smirnov normality test, and Pearson Correlation test. The findings of this research were female (30.2 ± 2.63) and male (36.8 ± 5.31) VO2Max concluded as fair category. There was no significant relationship between heart rate with body water (0.071 > 0.05) and urine color (0.557 > 0.05), even body water and urine colour (0.10 > 0.05). The pandemic period is proven to make fitness levels stand in a fair category. Heart rate, body water percentage, and dehydration do not have a significant relationship with each other.
Impact of healthy lifestyle on physical fitness among school-aged children: A comparative study between Indonesia and Pakistan Sulistiyono, Sulistiyono; Prastyawan, Rifky Riyandi; Arjuna, Fatkurahman; Nugroho, Sigit; Salman, Muhammad
MEDIKORA Vol. 24 No. 2 (2025): Oktober
Publisher : Faculty of Sports Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/medikora.v24i2.83722

Abstract

Children's general well-being is greatly influenced by physical fitness and leading a healthy lifestyle, although there are differences depending on the sociocultural context. The objective is to examine how healthy lifestyle choices affect school-age children's levels of physical fitness in Pakistan and Indonesia. The study provides valuable insights for educators, health practitioners, and policymakers to design strategies that promote healthier behaviours among children in diverse cultural settings. Methods: Researchers conducted cross-sectional research comparing 375 junior high school pupils from Pakistan (n = 182) and Indonesia (n = 193). The Multistage Fitness Test (MFT) was used to measure physical fitness levels, and a healthy living questionnaire was used to collect data. To assess the differences between the two groups, statistical analyses were conducted using independent sample t-tests, homogeneity tests, and normality tests. Result: The homogeneity and normality tests confirmed that the data were suitable for parametric analysis. The two groups' levels of physical fitness (t = 3.431, p = 0.000) and healthy lifestyle (t = 4.059, p = 0.000) differed significantly, according to the independent sample t-test. Compared to their Pakistani counterparts, Indonesian students demonstrated greater levels of physical fitness and a healthier lifestyle. These results suggest that students' fitness levels and lifestyle choices may be influenced by sociocultural, environmental, and educational conditions.Conclusion: Compared to Pakistani students, Indonesian students demonstrate greater levels of physical fitness and healthier lifestyle choices, underscoring the need for focused interventions to enhance the well-being of children in both nations. These findings can help schools, community organisations, and public health authorities develop targeted programs to foster healthy habits and improve youth fitness across different sociocultural contexts. Future studies ought to investigate the root reasons for these disparities and create policies that encourage students in various sociocultural contexts to lead healthier lives. Keywords: Children of School age, Indonesia, Pakistan, Healthy Lifestyle, Physical Fitness.
Hubungan Antara Kecanduan Smartphone Dengan Psychological Well-being Pada Remaja Jumrianti, Feni; Nugroho, Sigit; Arief, Yanwar
Journal of Islamic and Contemporary Psychology Vol. 2 No. 1 (2022): Journal of Islamic and Contemporary Psychology (JICOP)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jicop.v2i1.10263

Abstract

Smartphone addiction is a habit or behavior that cannot be controlled when hold or use a smartphone. That behavior changes the human personality that interfere with their daily habits and activities. The purpose of this study was to determine the relationship between smartphone addiction and psychological well-being in adolescents. This study uses Quantitative Method with 349 adolescents, aged 10-22 years old (according to the Regulation of the Minister of Health of the Republic of Indonesia number 25 of 2014 and John Santrock 2003) with smartphones usage habit. By using Non Probability sampling technique, namely Convenience Sampling, using the SAS-SV (Smartphone Addiction Scale Short Version) scale and the Ryff Psychological well-being scale has distributed via google form. The results of this study obtaine a correlation coefficient value (r) = -0.255 and a significance value of 0.000 (ρ<0.05). This result shows the relationship between smartphone addiction and psychological well-being in adolescents.
Aplikasi Super Edge-Magic Total Labeling Graph 4-Cycle Book pada Pembentukan Bahasa Sandi Luthfiyah, Aisyah Enggel; Hersiana, Sivi; Juniarti, Aisa; Pratiwi, Mutiara; Swita, Baki; Mursalim, Rahmat; Nugroho, Sigit; Simanihuruk, Mudin
Teorema: Teori dan Riset Matematika Vol 11, No 1 (2026): Maret
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/teorema.v11i1.21717

Abstract

Penentuan super edge-magic total labeling dari graphs   adalah open problem untuk . Oleh karena itu super edge-magic total labeling dari graphs  dapat digunakan untuk mengenkripsi (encrytion) dan mendekripsi (decryption) bahasa rahasia dalam kriptografi sehingga kerahasiaan informasi sulit dibongkar para hacker. Jadi permasalahan penelitian ini adalah apakah graphs  memiliki super edge-magic total labeling untuk semua  Jadi tujuan penelitian ini adalah mencari super edge-magic total labeling untuk semua  Hasil artikel ini menunjukkan  bahwa graphs  memiliki super edge-magic total labeling untuk  Hasil ini dibuktikan dengan metode modus ponens atau modus tollens. Super edge-magic total labeling  graphs  digunakan untuk mengkonstruksi bahasa sandi dengan menggunakan algoritma Rivest Shamir Adleman (RSA) yang diimplementasikan dalam pemograman Python.
Estimation of Stunting and Wasting Prevalence in Southern Part of Sumatra Using Nadaraya-Watson Kernel and Penalized Spline Oktarina, Cinta Rizki; Nugroho, Sigit; Sriliana, Idhia
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 10, No 2 (2026): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v10i2.36177

Abstract

This study aims to estimate the prevalence of stunting and wasting in the southern region of Sumatra using a bivariate nonparametric regression framework based on the Nadaraya-Watson Kernel and Penalized Spline estimators with Penalized Weighted Least Squares (PWLS). The analysis utilizes data from the 2023 Indonesian Toddler Nutrition Survey, comprising 60 regencies and cities across five provinces, namely Bengkulu, South Sumatra, Lampung, Jambi, and Bangka Belitung. By jointly modeling stunting and wasting as correlated response variables, this study seeks not only to compare methodological performance, but also to provide empirical insights into the nonlinear patterns underlying child nutritional outcomes influenced by maternal-child health and socioeconomic conditions. Model performance was evaluated using the Mean Squared Error (MSE), Root Mean Squared Error (RMSE), and the coefficient of determination (R²). The empirical results indicate that the Nadaraya-Watson Kernel estimator outperforms the Penalized Spline approach, yielding a substantially lower prediction error (MSE = 0.0008), high goodness-of-fit values (R² of 99.98% for stunting and 99.95% for wasting), and relatively small RMSE values of 0.038 and 0.017, respectively. These findings suggest that the kernel-based estimator provides stable and accurate predictions within the data structure considered, particularly in capturing complex nonlinear relationships between predictors and nutritional outcomes. Furthermore, the results reveal that the effects of health-related and socioeconomic factors vary across different prevalence levels, underscoring the importance of nonparametric methods in accommodating heterogeneous and nonlinear response patterns. In line with previous evidence emphasizing integrated, multisectoral approaches to child nutrition improvement, the findings highlight the relevance of combining health interventions with broader social protection strategies. Nevertheless, the interpretation of results is subject to methodological caution, given the limited sample size and the aggregated nature of the data. Overall, this study demonstrates the potential of bivariate nonparametric regression as a complementary analytical tool for health data analysis and evidence-based policy formulation related to stunting and wasting reduction.
The Politics of Mobilizing Pro-Democracy Citizens in the Empty-Box Voting Movement in the 2024 Pangkalpinang Local Election Hidayat, Novendra; Nugroho, Sigit; Herza, Herza
Journal Public Policy Vol 12, No 2 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jpp.v12i2.13431

Abstract

This article analyzes the politics of mobilizing support for the empty-box option in the 2024 Pangkalpinang local election, positioning it as a form of citizens’ electoral resistance to the narrowing of competition under single-candidate dominance. Using a descriptive qualitative approach through in-depth interviews, participant observation, and documentary analysis the study maps: (1) patterns of mobilization and volunteer networks, (2) movement resources (socio-cultural capital) and their negotiation with elite political capital, and (3) policy implications arising from regulatory gaps after an empty-box victory. The findings show that mobilization was organic and grew through cross-class community nodes (e.g., BOTAK, PKK, and Baju KOKO), supported by cultural framing, network-based communication (WhatsApp/social media), and solidarity practices that substituted for conventional political logistics. At the same time, the empty-box victory unfolded within local power relations in which political capital and kinship politics shaped the opportunity structure and narrowed formal channels of competition. The article offers recommendations to strengthen the governance of single-candidate local elections: clarifying the status and rights of the empty box in electoral regulation, strengthening internal party democracy, and developing mechanisms to prevent nomination cartelization so that electoral competition remains meaningful.
Peran Humas Pemerintah LLDikti Wilayah III dalam Menjaga Citra Lembaga di Era Digital Nugroho, Sigit
Jurnal Pustaka Komunikasi Vol 9, No 1 (2026): Accredited by Kemendikbud Dikti SK No. 79/E/KPT/2023
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32509/pustakom.v9i1.6540

Abstract

This study aims to analyze the public relations strategies implemented by LLDikti Region III in maintaining institutional image in the digital era. The rapid flow of information and the increasing demand for public transparency require government public relations to adapt their communication strategies in the digital environment. This research applies the P.E.N.C.I.L.S framework (Publication, Event, News, Community Involvement, Identity Media, Lobbying, and Social Responsibility) as an analytical approach to examine the implementation of public relations activities within the institution. The study employs a qualitative descriptive method within a post-positivist paradigm. Data were collected through in-depth interviews, observation, and document analysis involving key informants from the public relations division of LLDikti Region III. The results show that the integrated implementation of the P.E.N.C.I.L.S elements strengthens institutional credibility, improves stakeholder engagement, and supports the sustainability of institutional reputation in the digital public sphere. The study concludes that adaptive public relations strategies based on integrated communication management are essential in maintaining the positive image of public institutions in the digital era.
Penalized Spline Semiparametric Regression for Bivariate Response in Modeling Macro Poverty Indicators Oktarina, Cinta Rizki; Sriliana, Idhia; Nugroho, Sigit
Indonesian Journal of Applied Statistics Vol 8, No 1 (2025)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijas.v8i1.94370

Abstract

Semiparametric spline regression has become an increasingly popular method for modeling data due to its flexibility and objectivity, especially as a parameter estimation method. Spline functions are highly effective in semiparametric regression because they offer unique statistical interpretations by segmenting each predictor variable in relation to the response variable. Bivariate semiparametric regression can be applied to data where observations tend to have disparities between regions, making it suitable for poverty data, particularly the poverty depth index and the poverty severity index. The objective of this research is to analyze the models of the poverty depth index and poverty severity index, as well as to perform segmentation and interpretation of these models. This study utilized observations from 60 districts/cities in the southern part of Sumatra. Several predictor variables were considered, including the percentage of households with a floor area of ≤19 m², labor force participation rate, and life expectancy as parametric components, while the nonparametric components included the average length of schooling and the percentage of households with tap water sources. The estimation methods used were penalized least squares and penalized weighted least squares, involving a full search algorithm for selecting the number and location of knots. The results of the study indicated that the penalized weighted least squares method was the best estimator, with an MSE value of 0.3122 and two knots for each predictor, yielding GCV values of 4.3604 and 4.0794.Keywords: semiparametric regression; bivariate response; poverty; knot; penalized weighted least square
Co-Authors Abda Abda Abiyyu Amajida Achmad Binadja Achmad Djunaedi Adesi, Putri Adi Indrayanto Adriani, Desi Agi Ginanjar Agung Juliarto Agung Tri Prasetya Agwil, Winalia Ahmad Nasrulloh Alvionita, Renny Alwansyah, Muhammad Arib Andri Yanto Ari Agung Nugroho, Ari Agung Arief, Yanwar Arief, Yanwar Aristya, Irma Sendy Arono Arono Asmawati, Puji Azhar Abdul Rahman, Azhar Abdul Bahri, Syuhada Bayubuana, Muhammad Gabdika Bayubuana Betarina , Nurmalia Buyung Keraman Cerika Rismayanthi Cinta Rizki Oktarina Ciptadi, Zaniar Dwi Prihatin Crisdianto, Riki Danny Eka Wahyu Saputra Dewantara, Julian Doni Pranata Duwi Kurnianto Pambudi Dyah Pangesti, Riwi Dyah Setyo Rini Edmizal, Eval Eka Swasta Budayati Eka Wahyudi, Andi Sultan Brilin Susandi Eken, Özgür Fachri Faisal Fadhlia, Tengku Nila Fadli Ihsan Fairuzindah, Athaya Fakhrurozi, Zaza Afnindar Fakhrurozi5, Zaza Afnindar Fatkurahman Arjuna Feriza, Firman Firdaus Firdaus Firmansyah, Didi Fransiska, Welly Gumilar, Andri Tresna Haidar, Muhammad Daffa Hardiansyah Hardiansyah Haryanti, Wenny Herawati, Icha Herlin Fransiska Hermalia, Hermalia Hersiana, Sivi Herza, Herza Hidayat, Bahril Hidayat, Novendra Hikmah, Faidatul Idhia Sriliana Iskandar, Doddy Aditya Istislami, Yosuja Jomecho, Tommy Jose Rizal Jose Rizal Judin Purwanto, Judin Juliati, Kurnia Jumrianti, Feni Juniarti, Aisa Karuna, Elisabeth Evelin Kurniawan, Fuji Kurniawan, Yohan Lestari, Reza Lestari, Wina Ayu Leybina, Anna V Listyani, Nilla Lubis, Layla Takhfa Luthfiyah, Aisyah Enggel Mahira, Rina Manihuruk, FransFile Margono, Belinda Arunarwati Mariati, Dian Sri Marwan Maulana, Rifqi Adrian Mohammad Chozin, Mohammad Mudin Simanihuruk Muhammad Salman Muliadi, Rahmad Mulyawan, Rizki Murgolo, Michael Mursalim, Rahmat Mutiara Pratiwi, Mutiara MUTMAINAH Nanang Wahyudin Napitupulu, Lisfarika Nasution, Silvia Fauziah Naury, Chairullah Neni Lismareni, Neni Novi Susanti Nur Afandi Nur Fitriyana Nurul Hidayati Okka Adittio Putra Oktarina, Cinta Rizky Panganiban, Teejay D. Pantjarani, Ari Pepi Novianti Perdana, Satya Pongsiri, Tatpicha Praningrum Pratiwi, Stevy Cahya Pusparani, Annisa Marchelyn Putriasari, Novi Qorifah, Nasha Nuryati Rachmah Laksmi Ambardini Rahayu, Sundari Putri Ramya Rachmawati Razak, Ateerah Abdul Resi Vusvitasari Reza Pahlepi, Reza Rezha Arzhan Hidayat Rifky Riyandi Prastyawan Riky Dwihandaka Rina Yuniana Rohani, Tri Rohmatiah, Ahadiati Salsabilla, Intan Sari, Meyritha Trifina Sarumpaet, Mey Yanti Sebastian, Leonard Seger Handoyo Shahadan, MD Azman Sihombing, Esther Damayanti Singh, Laishram Thambal Sitohang, Yosep O Slamet Widodo Solly Aryza Sri Wahyuni SRI WARDANI Stojanović, Stefan Sujadmi, Sujadmi Sulistiyono Sulistiyono Sumarjo, Sumarjo Sumaryanti Sumaryanti Sumaryanti Sumaryanto Sumaryanto, Sumaryanto Sunandi, Etis Sunaryo Sunaryo Suparyono, Sita Wardhani Suryadi Suryadi Susi Wijuniamurti Swita, Baki Syahada, Sri Syahrul Akbar Talib, Kamal bin Tri Hadi Karyono Umi Kalsum Vira Dila, Sondang Wali, Carles Nyoman Wang, Ziyu Wati, Dewi Rohma Wawan Sundawan Suherman Wenni Anggita, Wenni Widiantoro, Didik Widiyatno Widodo, Fanani Haryo Widodo Widodo, Haryo Wijuniamurti, Susi Wiwin Hendriani Yanuar Rachman Sadewa Yassin, Abdulnassir Yoga Pratama Yudik Prasetyo YULIANA RAHMAWATI, YULIANA