bluuebunny/crossref_metadata_2025 huggingface dataset:
Tournament incentives, credit default swaps trading, and corporate policies: The interplay of managerial and creditor incentives
Authors: Du Lijing , Huang Jian
Published: August 2024

This paper investigates how the interaction between managerial and creditor incentives affects corporate risk and policies. Using a sample of 16,513 firm-year observations from 2001 to 2014, we find that credit default swaps (CDS) trading leads to higher stock return volatility and leverage, yet lower cash flow volatility and capital expenditure. Meanwhile, tournament incentive is associated with higher firm risk and more aggressive corporate policies. Further, we find that the interaction between tournament incentives and CDS trading alleviates the overall effect of intra-firm tournament incentives and CDS trading on firm risk and corporate policies. Altogether, our results suggest that risk-averse managers balance risk-taking incentives and creditor incentives when making corporate decisions and, hence are less sensitive to tournament incentives due to their concerns about exacting empty creditors problems in CDS-referenced firms. This study contributes to the literature by providing initial insights into the interaction effects between managerial and creditor incentives.
Using Artificial Intelligence in ESG Assurance
Authors: Li Nichole , Kim Meehyun , Dai Jun , Vasarhelyi Miklos A.
Published: August 2024

As environmental, social, and governance (ESG) reporting has become a mainstream channel for companies to communicate their commitment to sustainability issues, the need for reliable and transparent ESG reports is increasing. However, research on ESG assurance is still in its early stages. ESG assurance poses more challenges than traditional financial auditing due to the diverse subjects and types of information in ESG reports. This paper proposes using artificial intelligence (AI) technologies and exogenous data as solutions. It discusses how AI can enhance the efficiency and effectiveness of ESG assurance by assessing vast and extensive data. This paper also explores AI’s application throughout the general ESG assurance process and contributes to the discussion on providing high-quality ESG assurance services. Additionally, it provides practical implications for auditors, regulators, and stakeholders.
O PACTO FEDERATIVO E A REFORMA TRIBUTÁRIA
Authors: Cavalcante Ailton Ferreira , Oliveira Valdivino José de
Published: August 2024

Este resumo analisa o impacto da EC 132/2023 no Pacto Federativo, especificamente sobre a retirada da competência dos Estados e Municípios de legislarem sobre ICMS e ISS. O foco é verificar se a remoção dessa competência, garantida pela CF/88, pode reduzir o bem-estar social devido à possível alocação ineficiente de recursos. O trabalho busca contribuir para a racionalidade e eficácia do sistema tributário brasileiro, discutindo o pacto federativo, carga tributária e responsabilidades dos atores envolvidos, considerando a extensão territorial, diversidade e diferenças regionais do Brasil. A metodologia inclui pesquisa documental, bibliográfica, telematizada, além de raciocínio dedutivo e qualitativo. Conclui-se que é necessário preservar a autonomia dos estados e municípios para evitar a quebra do Pacto Federativo e a inviabilização das gestões locais.
Job Stress from Nurses’ Working Conditions in Sabah Women and Child Hospital
Authors: Duasin Clarice , Baddiri Baidi , Mamat Rohani , Musa Mazlinda , Satu Caroline , Saat Siti Fatimah
Published: August 2024

Both excessive and insufficient workloads can cause stress among employees. It has been established that as tasks take longer to complete, employee happiness tends to decrease, which can significantly impact their overall health and mental well-being. The primary objective of this study is to examine the relationship between age and working conditions concerning job stress among registered nurses in a government hospital in Sabah. The quantitative survey approach was employed, involving 60 registered nurses with a minimum of 3 years of experience. Purposive sampling was utilized to ensure a sample that would provide comprehensive insights and discoveries into the factors influencing job stress among nurses in this specific setting. The analysis indicated that there was no statistically significant relationship between age, working conditions as demographics, and job stress (p = 0.499). The average stress level reported by respondents was 15.7 ± 2.32379 on a scale where higher scores indicate greater stress. This finding suggests that the observed demographic characteristics, including age and specific working conditions, did not correlate with higher or lower levels of job stress among the nurses surveyed. Based on the survey results, it can be concluded that age and the specific working conditions studied do not appear to significantly influence the experience of job stress among registered nurses at the government hospital in Sabah. This implies that other factors not explored in this study may have a more pronounced impact on job stress levels within this population. Future research could explore additional variables or consider different methodologies to further understand the complexities of job stress among healthcare professionals.
Improving Functional Status of Older Adults Through Health Literacy Media: A Systematic Review
Authors: Tandilangi Trisnawati Paulus , Rekawati Etty , Eriska Winda
Published: August 2024

Older age can be followed by an aging process that shows a decrease in physical function due to various degenerative problems that reduce immunity caused the older adults vulnerable to infectious diseases.  Health literacy can improve the physical function of the older adults in using self management agents, social support, access to health services and increasing the quality of life of  older adults. The aim of this paper is to obtain the existence evidence of health literacy impact in improving older adults health status and functional or physical well-being living in community-setting and clinical setting. This paper used some databases Proquest database, PubMed, Sage Journal, Scopus, Ebscohost, Science Direct, anf Taylor & Francis. There are 11 articles published between 2014 - 2024 were reviewed using the PRISMA method. This review found that there are different types of health literacy media (print and digital) and there are combination of health literacy with physical activity interventions to deliver health information to older people. Standardized health literacy media in readability, and easy to use such as video/web/electronic, game-based, digital, and mobile-based and health literacy interventions combined with planned physical activities can increase knowledge, self-efficacy, cognitive function, quality of life, and reducing frailty score, fall risk, depression score.
The Effect of Wudhu Spiritual Therapy in Controlling Emotions in Patients at Risk of Violent Behavior
Authors: Biahimo Nur Uyuun I , Firmawati  , Syukur Sabirin , Mawikere Irma Novriyani
Published: August 2024

In the Limboto Health Centre working area, the behavioral changes of patients at risk of violent behavior were found to be that these patients had never received spiritual ablution therapy and were only given medication as prescribed or recommended. Mental disorders affect 970 million people worldwide. This study aims to determine whether ablution spiritual healing helps patients at risk of violent behavior in the Limboto Health Centre working area to control their emotions. Pre exploratory examination plan with one collection pretest-posttest configuration approach, the population of patients in danger of violent behavior in the working area of Limboto Community Group Welfare Centre, number of tests 15 people with complete examination procedures, information collected using the perception of signs and side effects sheet of patients in danger of violent behavior and tried using matched t-test measured parametric test. Results showed that before being given medication for otherworldly bathing treatment, all patients gave indications and side effects that generally appear in patients in danger of violent behavior. Still, after intercession, patients have the option to get mediation. control their feelings after being given bathing treatment given the consequences caused by paying attention to the symptoms and side effects. The p.value obtained from the paired t-test was 0.001 which is smaller than the value of 0.05. It was established in the Limboto Health Centre working area that the spiritual therapy of ablution helps patients at risk of violent behavior to control their emotions. Therefore, the health center is expected to support medical treatment to achieve more effective results in addition to using medical therapy which includes the administration of drugs
EFFECT OF CYLINDER HEAD GASKET ADDITION AND VARYING OCTANE NUMBER GASOLINE TO INTERNAL COMBUSTION ENGINE PERFORMANCE
Authors: Rahmat Bahtiar , Wijaya Mohammad Burhan Rubai , Bahtiar Fahmy Zuhda , Wirawan Yuris Bahadur , Muttaqin Katiko Imamul
Published: August 2024

The aim of this research was to investigate the different impacts of compression pressure on power and torque outputs using gasoline RON 92, RON 95, and RON 100. The study involved experiments using a single-cylinder motorcycle engine with a capacity of 125 cm. The selection of this type of engine is based on the popularity of vehicles in Indonesia that use a single-cylinder engine with a capacity of 125 cm. To modify the compression pressure, variations in the number of gaskets were applied to the cylinder head, with quantities of 1 and 3 gaskets. Dynamometer tests were conducted to measure the engine's performance differences. Throughout the testing, the settings for the main jet, pilot jet, and the number of idle screw rotations on the carburetor remain constant. The findings indicate that the engine with the highest compression pressure of 11.8 Kg/cm, using RON 100 gasoline, produces the highest power output at 7.9 kW, with the highest torque at 10 Nm.
EFFECT OF ZIGZAG AND LINE PRINTING PATTERN ON TENSILE STRENGTH AND SURFACE ROUGHNESS OF FUSED DEPOSITION MODELING PRODUCT
Authors: Sari Ayu Perwita , Rhohman Fatkur , Winata Ayis Nuredi , Herlanto Frendy Edo , Lubis Abdul Munir Hidayat Syah , Anggono Agus Dwi
Published: August 2024

This research aims to test the results of 3D printing using Polylactic acid (PLA) filament on surface roughness and tensile strength. Experiments were carried out by adjusting the differences in printing fill density for the pattern used. Filling density uses variations of 60%, 80%, and 100%. The tensile test is used to measure the tensile mechanical properties of polymers (σ). The roughness test is obtained to determine the average surface roughness (Ra), root mean square roughness (Rq), and ten-point height (Rz). The test specimen uses the ASTM D638 type 4 standard model and size. The nozzle diameter is 0.4 mm, the temperature is 220 °C, and the heat bed temperature is 60 °C. The mechanical properties test results of the printing pattern showed that the zigzag pattern had the highest yield strength, maximum load, and elongation values, namely 0.97 N/mm2, 52.99 N, and 9.43%. Meanwhile, in the line pattern, the highest yield strength, maximum load, and elongation values were 1.51 N/mm2, 62.72 N, and 3.54% and the highest yield of the two patterns was in the highest printing pattern, namely 100%. It was concluded that the larger the printing pattern, the wider the filament will be, as a, result the level of surface roughness will also be higher.
CHARACTERIZATION OF CENTRIFUGAL CASTING METHOD FOR PULLEY MANUFACTURING USING VARIABLE ROTATIONAL SPEED
Authors: Wisnujati Andika , Shomad Muhammad Abdus
Published: August 2024

Due to advancements in the industrial sector, aluminum is progressively gaining popularity as a material of choice in the field of engineering. A pulley is a component that functions as a link or transfers power or engine rotation to the load via the V-belt belt. This study aims to determine the characterization of aluminum material made by the centrifugal casting method from used brake shoes with rotational speed variables of 0 RPM, 100 RPM, and 200 RPM. The characterization of the casting results in this study was analyzed using the Brinell hardness test and the Charpy impact test. The results of the Brinell hardness test showed that aluminum castings for making pulleys with an additional 100 RPM die rotation speed had a Brinell hardness value of 53.22 BHN. The results of the impact test with the Charpy method showed that specimens with a mold rotation speed of 100 RPM had an impact value of 0.0135 kg.m/mm2. The results of this study concluded that variations in rotational speed of 100 RPM in the casting of pulleys made of used aluminum using the centrifugal casting method can produce products that have good toughness.
CLAMPING DIES DESIGN TO MINIMIZE AUTOMOTIVE COMPONENT DIES SETUP TIME AT PT GANDING TOOLSINDO
Authors: Purbaningrum Sanurya Putri , Lianny Indah Kurnia Mahasih , Solih Edwin Sahrial , Arohman Abdul Wahid , Satiman Bayu
Published: August 2024

PT Ganding Toolsindo was faced with the problem of high automotive component die setup times. The main cause of the high setup time is the process of tightening and releasing the bolts which is done manually. The aim of this research is to design a tool for clamping dies which functions to help speed up the bolt installation process, so that the setup time for automotive component dies is reduced. The method used in this research is field observation followed by the die clamping design process. Design planning begins by drawing the object using CAD software based on the results of load calculations and determining the dimensions of the dies themselves and the press machine as well as selecting the dies material. Furthermore, proof was carried out that this die clamping design could reduce dies setup time using movement analysis with a pre-determined time study Measurement Time Method (MTM) method, where the results showed a time saving of 92.4%.
IMPACT OF CHEMICAL REACTION ON MHD BOUNDARY LAYER FLOW OF NANOFLUIDS OVER A NONLINEAR STRETCHING SHEET WITH THERMAL RADIATION HAAR WAVELET COLLOCATION METHOD
Authors: N MAHESH KUMAR , Awati Vishwanath B , Goravar Akash
Published: August 2024

In this paper, we investigate the effects of chemical reaction and thermal radiation on MHD boundary layer fluid flow of nanofluid moving over a nonlinearly stretching sheet through semi-numerical approach. The nanofluid physical model of the problem comprises with effects of thermophoresis, radiation and chemical reaction parameters. The mathematical model scrutinizes mass, momentum, heat transfer and concentration equations are reduced to couple nonlinear ordinary differential equations over infinite domain using proper similarity variables. Haar wavelet collocation method is used to solve the resulting equations. The obtained results are compared with available numerical findings and are comparable which confirms and verifies the wavelet method. The effects of various non-dimensional parameters on the rate of heat and mass transfer are depicted through tables and graphs. It predicts that, the local Sherwood number increases with increase in the parameters of Brownian motion and thermophoresis. For both temperature and volume fraction profiles decreases due to an increase in the Schmidt number.
construcción de una imagen religiosa en la España del siglo XVII
Authors: Pereira Wagner Monteiro
Published: August 2024

Este artículo pretende analizar los mecanismos poéticos utilizados por Lope de Vega en su poesía lírica, especialmente en las Rimas Sacras (1614). El poeta español se ubica dentro de un contexto artístico en el que la imagen religiosa se manifiesta a partir de diferentes matices. Así, tanto el arte pictórica, como los textos publicados en el contexto del Siglo de Oro español, expresa un intento de comprensión de la subjetividad humana, y de su consecuente sensación de solitud, a partir de una relación dialéctica con la religiosidad que se consolidaba en el siglo XVII. Por lo tanto, este texto propone un diálogo entre la poesía de Lope y el modo cómo el autor revela el ethos en el que se ubica en un juego entre forma y contenido. Esto es, verificaremos cómo Lope proyecta en su texto lo religioso y la imagen que sobreviene en su producción poética, a partir de trabajos como los de Carreño (2002; 2013) y de Sánchez Jiménez (2018).
APLIKASI ARBUSCULAR MYCORRHIZAE DAN JENIS PUPUK BERBEDA PADA KONDISI CEKAMAN KEKERINGAN TERHADAP MORFOLOGI DAN EFISIENSI PENGGUNAAN AIR PADA RUMPUT PAKCHONG
Authors: Susanti Wulan , Liman Liman , Muhtarudin Muhtarudin , Erwanto Erwanto
Published: August 2024

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian level mikoriza dan jenis pupuk yang berbeda pada kondisi cekaman kekeringan serta interaksi antara keduanya terhadap morfologi dan efisiensi penggunaan air rumput pakchong.  Penelitian ini dilaksanakan pada November 2022-Januari 2023, dilakukan di Rumah kaca Laboratorium Lapang Terpadu, Fakultas Pertanian, Universitas Lampung.  Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial yang terdiri atas faktor mikoriza dan faktor pupuk.  Faktor mikoriza terdiri dari 4 taraf perlakuan yaitu M0 (tanpa mikoriza), M1 (mikoriza 20 gram), M2 (mikoriza 40 gram), M3 (mikoriza 60 gram) dan faktor pupuk terdiri dari 3 taraf perlakuan yaitu P1 (pupuk kambing), P2 (pupuk NPK), P3 (pupuk NPK + pupuk kambing).  Data yang diperoleh dianalisis menggunakan Sidik Ragam (Analysis of Variance) dan dilanjutkan dengan uji Beda Nyata Terkecil (BNT). Hasil penelitian pemberian mikoriza dan jenis pupuk tidak memberikan pengaruh nyata (P>0,05) terhadap morfologi tinggi tanaman, jumlah daun, rasio daun batang, luas permukaan daun dan efisiensi penggunaan air rumput pakchong serta tidak ada pengaruh antara kedua perlakuan.  Pemberian mikoriza dan jenis pupuk berpengaruh nyata (P<0,05) terhadap bobot akar rumput pakchong, akan tetapi tidak ada interaksi antara kedua perlakuan. Hasil uji Beda Nyata Terkecil (BNT) pada bobot segar akar rumput pakchong menunjukkan bahwa perlakuan mikoriza M0 tidak berbeda nyata dengan perlakuan M1 dan M3, perlakuan mikoriza M2 tidak berbeda nyata dengan perlakuan M1 dan M3, dan perlakuan M0 berbeda nyata dengan perlakuan M2. Hasil uji BNT bobot segar akar rumput pakchong pada perlakuan pupuk menujukkan bahwa perlakuan P1 berbeda nyata dengan perlakuan P2 dan P3.
PENGARUH BERBAGAI JENIS AMELIORAN TERHADAP PRODUKTIVITAS RUMPUT PAKCHONG PADA TANAH ULTISOL
Authors: Sari Andini Novita , Liman Liman , Muhtarudin Muhtarudin , Erwanto Erwanto
Published: August 2024

Penelitian ini bertujuan untuk mengetahui pengaruh berbagai jenis Amelioran terhadap produktivitas (jumlah anakan, bahan segar, tinggi tanaman, serta rasio daun dan batang) dan mengetahui jenis Amelioran yang terbaik untuk meningkatkan produktivitas rumput pakchong pada tanah Ultisol. Penelitian ini dilaksanakan pada November 2023 sampai Januari 2024 yang berlokasi Laboratorium Lapangan Terpadu, Fakultas Pertanian, Universitas Lampung dan Laboratorium Nutrisi dan Pakan Ternak, Jurusan Peternakan, Fakultas Pertanian, Universitas Lampung. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan yaitu: P0: tanpa perlakuan (kontrol); P1: pupuk kompos (25 ton/ha); P2: pupuk kompos (25 ton/ha) + dolomit (4 ton/ha); P3: pupuk kompos (25 ton/ha) + dolomit (4 ton/ha) + zeolit (10 ton/ha); P4: pupuk kompos (25 ton/ha) + dolomit (4 ton/ha) + zeolit (10 ton/ha) + biochar (10 ton/ha). Setiap unit perlakuan berupa lahan petak dengan ukuran 1,5 x 1 m. Setiap unit percobaan diulang sebanyak 4 kali, sehingga terdapat 20 unit percobaan. Data yang diperoleh akan dianalisis menggunakan Analysis of variance (ANOVA). Apabila terdapat pengaruh antar perlakuan, maka analisis dilanjutkan menggunakan Uji Beda Nyata Terkecil (BNT). Hasil penelitian menunjukkan bahwa pemberian berbagai jenis Amelioran tidak berpengaruh nyata (P>0,05) terhadap jumlah anakan, bobot segar, tinggi tanaman serta rasio daun dan batang pada tanah Ultisol.
PENGEMBANGAN BAHAN AJAR MENULIS BIPA TINGKAT MADYA TINGGI BERBASIS KONTEKS LINGKUNGAN PELAJAR
Authors: Amalia Rina Rizki
Published: August 2024

This development research aims to produce an intermediate high level BIPA writing teaching material product based on the context of the learner's environment that has gone through a validation test. This research adapts Thiagarajan's 4D development model and is limited to the revision stage based on the assessment of expert validators and practitioners. Based on the validation results, an average percentage of 81.25% was obtained in the content feasibility aspect, an average percentage of 83.3% was obtained in the presentation feasibility aspect, an average percentage of 75% was obtained in the language feasibility aspect, and an average percentage of 81.06% was obtained in the display feasibility aspect. From the overall total validation results with an average percentage of 80.15%, it can be concluded that the teaching materials for writing intermediate high level BIPA based on the context of the learner's environment can be said to be feasible to use.
EXAMINING GREEN INNOVATION PRACTICE ON CORPORATE’S SUSTAINABLE GROWTH IN NON-FINANCIAL SECTOR: THE MEDIATING EFFECT OF ENVIRONMENTAL MANAGEMENT ACCOUNTING
Authors: Atmariani Annisa Aulia Rahma , Agustia Dian , Permatasari Yani , Lusandi Gatra Kautsar
Published: August 2024

This research explores the role of Environmental Management Accounting (EMA) as a mediator in the relationship between green innovation and sustainable growth. This research utilized the STATA 14 program to test hypotheses using the path analysis test and the Sobel test. The analysis was conducted on 2,716 observations from 539 non-financial corporates listed on the Indonesia Stock Exchange (IDX) between 2013 and 2020. The path analysis findings indicate that (1) green innovation positively influences EMA; (2) green innovation positively affects sustainable growth; (3) EMA does not have a significant impact on sustainable growth; and (4) EMA does not operate as a mediator between green innovation and sustainable growth. Additionally, the present research conducted a rigorous robustness test, which yielded results that aligned with those obtained from the path analysis test. Incorporating environmentally focused innovation into company plans provides substantial benefits for achieving sustainable growth, including cost reduction, improved competitive advantage, compliance with regulations, and exploring new market opportunities.
Pengaruh Model Project Based Learning dalam Meningkatkan Hasil Belajar Siswa pada Kelas XII Mata Pelajaran Estimasi Biaya di SMK Negeri 1 Padang
Authors: Zuwida Nidal , Haynunah Lhatyva
Published: August 2024

Masalah yang diangkat adalah Kurangnya kesesuaian model pembelajaran yang telah diterapkan untuk KD 3.10 estimasi biaya sehingga rendahnya kemampuan siswa dalam memahami materi estimasi biaya menyebabkan hasil belajar siswa yang belum maksimal karena 50% dari jumlah siswa dapat nilai dibawah KKM. Tujuan dari penelitian ini untuk melihat pengaruh PJBL pada kd 3.10. Metode eksperimen semu (quasi experimental research) merupakan model penelitian yang digunakan. Instrumen dipenelitian ini yaitu soal pre test dan post test yang divalidasi oleh para ahli dan di uji pada kelas uji coba sebelum di berikan pada subjek penelitian. Berdasarkan validasi menggunakan rumus Aiken dan uji reliabilitas dari 3 orang ahli menghasilkan bahwa soal yang digunakan layak digunakan pada penelitian dengan keterangana mencapai kriteria untuk setiap aspek yang diajukan pada setiap butir soal sehingga dinyatakan valid. Berdasarkan hasil uji efektivitas dengan uji independent sample t-test memperoleh hasil, dengan t hitung = 4,370 > t tabel = 2,052 dan signifikansi = 0,000 < 0,05, maka HO ditolak dan Ha diterima yang berarti efektivitas penggunaan model pembelajaran PJBL lebih tinggi dibandingkan pembelajaran konvensional. Dapat disimpilkan model pembelajaran PJBL menghasilkana capaian berupa peningkatan hasil belajaran siswa pada mata pelajaran estimasi biaya kelas XII SMK Negeri 1 Padang.
Pengaruh Siklus Basah Kering terhadap Perilaku Mekanik Tanah Lempung Stabilisasi Biosementasi dengan Bakteri Bacillus Subtilis
Authors: Indriani Andi Marini , Utomo Gunaedy , Syahputra M Ryan
Published: August 2024

Tanah lempung mempunyai daya dukung sangat kecil sehingga banyak menjadi masalah pada pekerjaan di bidang Teknik Sipil terutama pada negara dengan 2 musim seperti Indonesia. Siklus basah kering akibat perubahan musim ini tentu akan menyebabkan perubahan pada daya dukung tanah. Pada musin panas biasanya daya dukung cukup tinggi tetapi dimusim hujan daya dukung akan sangat rendah.  Perkembangan metode stabilisasi tanah semakin baik dengan munculnya beberapa ide inovatif salah satunya dengan metode stabilisasi menggunakan mikroorganisme yang dikenal dengan istilah biosementasi. Tetapi metode ini harus terus dikaji terutama pengaruh siklus basah kering terhadap perubahan nilai CBRsoaked tanah lempung. Salah stu jenis mikroorganisme yang mampu menghasilkan CaCO3  yang dapat meningkatkan daya dukung tanah adalah bakteri Bacillus Subtilis. Penelitian yang dilakukan dengan menerapkan metode curing yang berbeda dimana tanah diperam selama 14 hari dengan metode soaked yaitu dikeringkan selama 10 hari dan direndam selama 4 hari, Metode 1 Siklus A dengan cara di rendam selama 6 hari kemudian dikeringkan selama 8 hari dan metode 1 siklus B  di keringkan selama 6 hari lalu dilakukan perendaman selama 6 hari dan dikeringkan selama 2 hari baru di uji untuk mengetahui perubahan sifat mekanis tanah California Bearing Ratio (CBR) dengan variasi campuran bakteri umur kultur 1 hari sebanyak 3%, 4.5%  dan 6%. Hasil pengujian menunjukkan metode Soaked lebih baik dibandingkan metode 1 Siklus A dan B. Terjadi peningkatan nilai CBR dibandingkan dengan tanah asli dimana dengan metode Soaked meningkat hingga 5 kali lipat, metode 1 Siklus A sebersar 89% sedangkan metode 1 Siklus B hanya meningkat 15%.
Potensi Likuifaksi Berdasarkan Nilai N-SPT di Bandara Rokot Kepulauan Mentawai
Authors: Asema Fuji
Published: August 2024

Likuifaksi adalah fenomena dimana tanah yang semula padat mengalami perubahan menjadi cair akibat peningkatan tekanan air pori pada saat getaran gempa bumi. Kepulauan Mentawai merupakan daerah yang sering terjadi gempa bumi dan tsunami. Kepulauan ini memiliki satu bandar udara merupakan pintu gerbang utama untuk mengunjungi Kepulauan Mentawai, yang terkenal dengan keindahan alamnya seperti pantai, ombak, dan kekayaan bawah lautnya. Oleh karena itu penting dilakukan analisis potensi likuifaksi pada bandara rokot mentawai. Analisis ini dilakukan dengan menggunakan data hasil uji N-SPT pada terminal penumpang dan bangunan operasi bandara Rokot Mentawai. Hasil analisis diperoleh bahwa potensi likuifaksi terjadi pada kedalaman <16m dengan nilai Safety Factor (SF) ≤1,0. Jika dihubungkan dengan evaluasi penurunan tanah selama terjadi gempa, maka dapat diketahui bahwa tanah yang mengalami likuifaksi pada titik BH01 dan BH02 memiliki nilai kerpatan relatif (Dr) antara 0 – 65% dengan kerapatan sangat lepas hingga sedang. Hal ini berarti bahwa tanah cenderung rentan terhadap likuifaksi karena selama gempa bumi berlangsung, rongga pori tanah akan terisi oleh air, tekanan air pori menjadi meningkat yang menyebabkan tanah menjadi jenuh dan berpotensi mengalami likuifaksi.Diharapkan hasil analisis potensi likuifaksi ini dapat memberikan kontribusi yang signifikan serta bisa menjadi pedoman dalam menghadapi potensi risiko likuifaksi terutama pada daerah yang rawan terhadap gempa bumi dan likuifaksi.
Penilaian Risiko Proyek Infrastruktur Kereta Api Cepat Jakarta – Bandung
Authors: Ashadi Reza Ferial , Citra Zel , Sari Intan Purnama
Published: August 2024

Masa depan adalah hal yang tidak pasti tapi risiko adalah suatu keniscayaan yang pasti terdapat dalam setiap proyek. Oleh karena itu perlu dilakukan suatu pengelolaan risiko untuk meminimalisisr dampak negatif yang mungkin terjadi yang menimbulkan kerugian dalam proyek tersebut. Seni mengelola risiko adalah tujuan dari manajemen risiko yang dapat digunakan untuk menilai suatu risiko, sehingga dapat mengidentifikasi, menganalisis, serta mengevaluasi risiko yang dapat terjadi pada suatu proyek konstruksi, seperti pada proyek infrastruktur. Proyek Kereta Api Cepat Jakarta Bandung adalah suatu mega proyek infrastruktur yang pengerjaannya dilakukan secara bersama oleh Indonesia dan China ditenggarai mempunyai risiko yang sangat tinggi sehingga diperlukan suatu pengelolaan risiko yang tepat untuk meminimalisisr dampak negatifnya. Dalam penelitian ini diambil studi kasus proyek tersebut pada Seksi II yaitu dari Karawang-Purwakarta. Metode yang digunakan adalah HIRADC yang dikombinasikan dengan metode Severity Index untuk analisis risikonya. Penelitian ini dibatasi hanya dari sudut pandang kontraktor. Dari hasil penelitian didapatkan 30 jenis risiko yang bisa diklasifikasi kedalam 9 kategori pada tahap konstruksi. Dari 30 jenis risiko tersebut, berdasarkan hasil analisis terdapat 3 jenis risiko tinggi yaitu keterlambatan pembayaran oleh pemilik proyek, kesulitan akses menuju lokasi proyek, dan  ketidakpastian kondisi di lapangan.
Desain Frame Waterway pada Drainase terhadap Penanganan Banjir di Kota Padang
Authors: Nifen Silta Yulan , Fajri Ichsanul
Published: August 2024

Saat hujan pada daerah perkotaan, kondisi genangan air bahkan banjir sering terjadi di jalan-jalan kota. Ini terjadi di ruas jalan di Kota Padang, antara lain Jalan Khatib Sulaiman dan Jalan Kh. Ahmad Dahlan yang terkena banjir. Banyak penyebab yang berkontribusi terhadap banjir, termasuk kondisi cuaca hujan yang cenderung ekstrem, perubahan tutupan lahan membuat semakin tingginya kondisi kedap air pada luasan kawasan, dan saluran yang tidak mencukupi, serta desain Frame Waterway tidak sesuai. Tujuan studi ini adalah untuk menetapkan desain saluran Frame Waterway yang paling efektif. Penelitian ini memanfaatkan data primer dan data sekunder. Untuk data primer yang digunakan perangkat lunak Google Earth dan meter; untuk data sekunder, statistik curah hujan tahunan dari 2012 hingga 2021 dikumpulkan dari PSDA Sumbar. Setelah pengumpulan data, dilakukan pengolahan data yang meliputi pengolahan data hidrologi dengan analisis frekuensi, analisis debit banjir rencana dengan pendekatan Rasional, dan perhitungan kapasitas kerb inlet dan street inlet (Frame Waterway). Berdasarkan hasil analisis dan simulasi, maka direncanakan bentuk dimensi Street Inlet pada sisi kiri dan kanan jalan setiap 12 meter, menghasilkan dimensi 37x31cm dengan ukuran grid 3x21cm sebanyak 4 lubang.
Analisis Sisa Material Proyek Pembangunan Perumahan XYZ di Kabupaten Darmasraya
Authors: Arman Utami Dewi , Leilany Lili , Sari Afrilda , Trinanda Asri Yuda , Desfita Mediana
Published: August 2024

Penelitian ini bertujuan mengidentifikasi jenis material konstruksi yang menyebabkan terjadinya pemborosan dan menghitung volume dan biaya sisa material serta mengidentifikasi faktor-faktor yang mempengaruhi sisa material konstruksi pada Proyek Pembangunan Perumahan XYZ di kabupaten Darmasraya. Berdasarkan hasil pengolahan data, diperoleh biaya sisa material sebesar 0,68 % atau Rp. 15.288.050,00 dari total biaya rencana material sebesar Rp.2.250.172.054,00 artinya pemborosan material relatif sangat sedikit dan faktor-faktor penyebab sisa material pada studi kasus adalah kondisi material yang rusak akibat pengangkutan kelokasi proyek dengan bobot 0,091; kesalahan perencanaan kuantitas material dengan nilai bobot 0,088; pengukuran dilapangan tidak akurat sehingga terjadi kelebihan volume dengan nilai bobot 0,085; kesalahan pekerjaan/pemasangan yang dilakukan oleh pekerja dengan nilai bobot 0,082 ; informasi gambar tidak detail dengan nilai bobot 0,079. Upaya-upaya yang sebaiknya dilakukan oleh kontraktor dalam mengurangi sisa material adalah memonitor pengangkutan material di lokasi, melakukan analisis kembali kebutuhan material, menyediakan pekerja yang lebih berpengalaman dan memiliki skill serta sebaiknya agar kontraktor melakukan survey awal di lokasi kerja sebelum melakukan perhitungan ulang untuk kuantitas pekerjaan.
Evaluasi Mutu Material Pekerjaan Struktur Atas Proyek Tower X Berdasarkan SNI 2847 2019 dan SNI 2052 2017
Authors: Yusmar Fajri , Damara Rivaldo , Sandra Nevy
Published: August 2024

Beberapa aturan terkait dengan kualitas material beton yang masih sering diabaikan adalah jumlah benda uji minimal yang harus diambil, bagaimana menentukan nilai dari kuat tekan suatu hasil benda uji, serta bagaimana mengevaluasi untuk kriteria penerimaan benda uji yang harus dipenuhi dan dilaporkan. Sedangkan untuk material baja tulangan, hal yang semestinya turut diperiksa, selain mengenai uji tarik yang melitupi batas kuat luluh, dan kuat tarik, adalah batas regangan. Proyek pembangunan X yang terletak di Kota Depok merupakan salah satu proyek konstruksi yang direncanakan terdiri dari 24 lantai hunian, dan 1 lantai basement di bawahnya. Tidak maksimalnya beberapa hasil pekerjaan bila diikuti dengan rendahnya kualitas material akan berdampak buruk terhadap performa struktur dalam memikul beban. Penelitian ini bertujuan untuk melakukan evaluasi terhadap kriteria penerimaan kualitas untuk material beton dan baja tulangan. Hasil evaluasi dan analisis terhadap hasil pengujian material menunjukan bahwa material tersebut telah memenuhi spesifikasi teknis dan persyaratan yang ada di dalam SNI 2847:2019 dan SNI 2052:2017.
Kajian Faktor-Faktor yang Mempengaruhi Keterlambatan pada Proyek Konstruksi Gedung Bertingkat
Authors: Alam Muhammad Miftakhul , Putra I Nyoman Dita Pahang
Published: August 2024

Pada setiap proyek konstruksi  memiliki jangka pengerjaan tertentu, dengan resources dan peralatan tertentu. Suatu proyek dikatakan berhasil jika waktu, biaya dan mutu sudah sesuai dengan kontrak. Sebagian besar dari proyek konstruksi mengalami keterlambatan. Keterlambatan sering terjadi pada proyek yang di sebabkan oleh berbagai faktor, diantaranya faktor material atau bahan, faktor tenaga kerja, faktor peralatan, faktor material, faktor lingkungan dan lain sebagainya. Untuk mengetahui faktor dan sub faktor yang mempengaruhi keterlambatan proyek merupakan tujuan dari penelitian ini. Penelitian ini di lakukan dengan cara menyebarkan kuisioner kepada kontraktor dan atau konsultan proyek tertentu, data yang diperoleh dilakukan uji validitas untuk Memastikan bahwa data tersebut valid dan dilakukan uji reliabilitas yang bertujuan untuk memastikan bahwa variabel yang digunakan tersebut reliabel, kemudian data yang sudah valid dan reliabel diolah menggunakan piranti lunak dengan metode analisis deskriptif. Setelah dilakukan analisis didapatkan faktor tenaga kerja dengan nilai mean 3,5 adalah faktor yang memiliki pengaruh paling besar terhadap keterlambatan proyek, sedangkan sub faktor yang paling berpengaruh terhadap keterlambatan proyek adalah sub faktor owner lambat dalam membuat keputusan dengan nilai mean sebesar 3,71.
Constraint Factors for Implementation of Green Construction Concept in Building Development Project in West Sumatra Province
Authors: Arman Utami Dewi , Sari Afrilda , Leilany Lili
Published: August 2024

The construction development in West Sumatra province has not applied much green construction concept. This study aims to identify obstacles in implementing green construction in building construction projects and recommend appropriate solutions for local contractors in overcoming obstacles in their implementation. This research is quantitative descriptive research through the use of questionnaire surveys to selected respondents. The results of data analysis with the parameter ranking weighting method, significant obstacle factors were obtained, including; The implementation of green construction needs longer duration; Lack of ideal guidelines and operational standards regarding the implementation of green construction;  The increase of project costs in purchase and management of construction materials; Unreadiness in recruiting professionals and project risks in the project closing out due to specific contract forms. Based on the results, it is expected that the government establishes operational guidelines for the implementation of green construction, prepares an adapted budget and schedule for green construction, professional training and appropriate risk mitigation plan related to green construction contracts.
The Influence of Props-Based Learning Media Against Improved Construction Learning Outcomes and Building Utilities at SMK Negeri 4 Pariaman
Authors: Rani Rani , Zuwida Nidal
Published: August 2024

The This research was conducted based on the background of the unavailability of supporting learning media in Building Construction and Utility subjects, especially in the material of applying procedures for making detailed foundations, sloofs, columns and beams. This research aims to produce products that are valid, practical and effective and have an impact on improving learning outcomes in Building Construction and Utilities. This research uses the R&D research method using the 4D development model which consists of four stages, namely define, design, develop and disseminate. The instruments used in this research were learning media validation questionnaires for media and material experts, learning media practicality questionnaires for students, as well as learning media effectiveness test questions for students. The media validation results for detailed foundation, sloof, column and beam media show that the learning media can be categorized as very valid with a level of validity by media 1 of 85.45%, media expert 2 of 85.45%, expert media 3 of 87.27 %, material expert 1 was 85.71% with a very valid category; The practicality of the detailed media for foundations, sloofs, columns and beams based on student assessment was 89.87% in the very practical category; Furthermore, the effectiveness assessment was carried out by testing the N-Gain Score with a value of 36.6% in the quite effective category as well as testing the T-test. Students received a value of tcount > ttable or 5.812 > 1.741, which means that Ha was accepted and Ho was rejected. According to the results of the overall assessment of teaching aids media, the resulting learning media products were stated to be very valid, practical, and quite effective for use in supporting the learning process, as well as having a significant effect on improving learning outcomes in Construction and Building Utilities.
Risk Analysis and Management of Road Infrastructure Using A Single Year Funding System in The Mentawai Islands
Authors: Utami Fadhillah Rizky , Hidayat Benny , Ophyandri Taufika
Published: August 2024

Roads are the basic infrastructure that humans need most to be able to move from one place to another to meet their daily needs. According to the Central Statistics Agency, the Mentawai Islands area, the percentage of stable roads available in the Mentawai Islands is only around 10%, so that for Road infrastructure development in the Mentawai Islands is the main target for the local government. The funding system provided is mostly a single year funding system. Single year funding is defined as project activities where the work implementation period corresponds to or is equal to one budget year. The development of road infrastructure with a single year funding system in the Mentawai Islands will certainly not be without the name project risk. The aim of this research is to create risk management in road construction with a single year funding system in the Mentawai Islands. The interview method was conducted to informants. There are 15 risks identified for the Mentawai Islands Regency. The highest potential loss obtained from the contractor is the delay in the tender and the risk aggregate from the contractor is IDR. 40,300,000,000,- . The highest potential loss obtained from the owner is a natural disaster and the aggregate risk from the owner is Rp. 26,880,000,000,-. The highest potential loss that can be obtained from the contractor is the delay in the tender and the aggregate risk from the contractor is Rp. 40,300,000,000,- . The highest potential loss that can be obtained from the owner is a natural disaster and the aggregate risk from the owner is Rp. 26,880,000,000,-. The highest potential loss that can be obtained from the contractor is the delay in the tender and the aggregate risk from the contractor is Rp. 40,300,000,000,- . The highest potential loss that can be obtained from the owner is a natural disaster and the aggregate risk from the owner is Rp. 26,880,000,000,-.
The Influence of Ground Water Level Conditions on the Stability of Road Slopes with Retaining Walls
Authors: Priadi Eka , Murad Murad
Published: August 2024

This research was carried out using the P laxis 8.0 finite element method and manual calculations as well as by evaluating the safety factor value. Slope stability analysis using the P laxis program aims to determine the safe value of the slope before and after reinforcement using a cantilever - type retaining wall. Based on the analysis of the P laxis program before the installation of the cantilever retaining wall, in general the condition of the retaining wall on Jalan Ahmad Yani Gg. Batu Mas, Singkawang City experienced a landslide due to the condition of the soil which was classified as having low soil mechanical properties. Slopes with designed cantilever wall reinforcement are considered safer because they have the smallest displacement and settlement values, and meet all slope stability requirements, ie, shear stability is 1.251 > 1.5 (Safe), stability against overturning is 2.415 > 2 (Safe) , and bearing capacity is 0.555 < 0.583. The cantilever retaining wall structure uses D16-100 principal reinforcement and D10-100 shrinkage reinforcement, the base plate uses D16-150 principal reinforcement and D10-100 shrinkage reinforcement.
Development of a QR Code-based Woodworking Practice Jobsheet
Authors: Ramadhan Raihan Ahlam , Prima Fani Keprila
Published: August 2024

This research was motivated by the need for the development of jobsheets to support the learning process in the Wood Working Practices course at the Department of Civil Engineering, Faculty of Engineering, Padang State University. The purpose of this research is to produce a QR code-based jobsheet that is valid and practical to use as a learning support medium in the Wood Working Practices course. The research method used is Research and Development (R&D) with the DDD-E development model, which consists of Decide, Design, Develop, and Evaluate stages. The instrument used in this research is a questionnaire to test the validity and practicality of the product. The research subjects consisted of three lecturers or experts of the Wood Working Practices course who acted as assessors in the product validity level test, and 16 students of the Building Engineering Education study program who took the Wood Working Practices course in the July–December 2023 semester who played a role in the product practicality level test stage. The results of the validation test of the QR Code-assisted Wood Working Practice job sheet showed a high level of validity, with a rating of 94% for Media Expert 1, 92% for Media Expert 2, and 99% for Media Expert 3. As for the student usability test of the QR Code-assisted Wood Work Practice jobsheet, a score of 93% was achieved in the highly usable category. Based on the results of this study, it can be concluded that the QR Code-assisted Wood Work Practice jobsheet can be said to be valid and practical for use in the learning process of the Wood Work Practice course at the Department of Civil Engineering, Faculty of Engineering, Padang State University.
Tsunami Vertical Evacuation Building Analysis (Shelter) Based on Number and Location: Case Study of Koto Tangah District- Padang City
Authors: Ashar Faisal , Hadiguna Rika Ampuh , Faisal Muhammad
Published: August 2024

Koto Tangah Sub-district is a sub-district where part of its area is located on the coast, making it prone to tsunami disasters. Despite the fact that the large number of exposures in the tsunami red zone predicted to happen in this District, there are only three tsunami shelters in the red zone of Koto Tangah District. The purpose of this study was to determine the distribution of official shelters in Koto Tangah District, the distribution of planned shelters, and the coverage of shelter service areas. The research method used is a quantitative descriptive method. In this study, what is discussed is the number and location of shelters, as well as the location of the planned tsunami shelters. Also, this present study sought to finding out the coverage area that can be served by the shelter with the help of GIS applications.  The results of the data analysis are as follows: (1) There are nine villages (kel.) that are in the tsunami red zone of the Koto Tangah District and are not served by official shelters, namely: Kel. Padang Sarai, Kel. Batipuh Panjang, Kel. Lubuk Buaya, Kel. Pasia Nan Tigo, Kel. Batang Kabung Ganting, Kel. Koto Pulai, Kel. Koto Panjang Ikua Koto, Ex. Dadok Stumping Black, and parts of Ex. Parupuk Tabing. (2) The analyzed planned shelters and horizontal points examined that all of the Koto Tangah red zone areas can be served by shelters, and the planned shelters can be reached in the span of 34.5 minutes with a distance of 1554.57 m, meaning that people who are in the tsunami red zone can evacuate safely before the tsunami hits the city.  (3) local government needs to add another 6 planned shelters in Kel. Padang Sarai, Kel. Lubuk Buaya, Kel. Pasie Nan Tigo, Kel. Batang Kabung Ganting, and Kel. Parupuk Tabing, with each shelter's planned height of 8.5 meters.
Identification of the Application Green Construction Concept using the Assessment Green Construction Model (MAGC)
Authors: Rahmat Rahmat , Zola Prima , Rifwan Fitra
Published: August 2024

Environmental damage is a topic of global discussion, so there is a need to reduce the impact of this environmental damage in various sectors, including the construction sector. In the construction industry, one of the efforts is the need to implement green construction. Green construction is one part of sustainable development that is expected to be able to participate in maintaining environmental sustainability and harmony in its implementation. Until now, the application of the green construction method in sumatra has been considered to be relatively immature. This research aims to identify the application of the green construction concept using the green construction assessment model. This research is quantitative research. The data are collected through questionnaires. The assessment instrument uses the green construction assessment model (MAGC) which is combined with the analytical hierarchy process process (AHP) method for calculating aspect weights and green construction factors. This research uses six aspects, 16 factors, and 55 green assessment indicators. construction that is obtained through the green construction assessment model. Based on the results of the analysis and data processing through the Ms.Excel software, we obtained an aspect weighting result of 0.134 and a factor weight of 0.209. This value is used as a calculation for the green construction assessment model, which is obtained by a green construction value (NGC) of i3.15 which does not yet meet the ideal NGC value of 10.10.