bluuebunny/crossref_metadata_2025 huggingface dataset:
THE INFLUENCE OF TIKTOK PROMOTIONAL MEDIA, INSTAGRAM PROMOTIONAL MEDIA, AND FACEBOOK PROMOTIONAL MEDIA ON PURCHASE DECISIONS MIXUE ICE CREAM & TEA
Authors: Rizky Amelia Rahma Safitri  , Rini Rahayu Kurniati  , Khoiriyah Trianti
Published: August 2024

The research carried out aims to understand Do Tiktok Promotional Media, Instagram Promotional Media, and Facebook Promotional Media influence consumer purchasing decisions for Mixue Ice Cream & Tea? This type of research is quantitative using methods Non-Probability Sampling and the sample is Purposive e Sampling . Sampling was carried out using the Cochran formula, because the population size is relatively large and cannot be known with certainty so the number collected was 100 respondents . Testing data that can be tested on IBM SPSS version 25 . The results of the research state that the independent variables Tiktok Media Promotion (X1), Instagram Media Promotion (X2), Facebook Media Promotion (X3) are influenced by Purchase Decisions (Y). The results of the F test state that F calculated > F table (18.613 > 2.698) and the value is significant ( . 0.00 . < 0.05 . ). The value of the Coefficient of Determination states that the TikTok Promotion Media, Instagram Promotion Media and Facebook Promotion Media variables influence the Purchase Decision variable by 34.8% simultaneously . The final number (100% - 34.8% = 65.2%) contained other factors that influenced the research carried out .
The Role of Social Media In The Dissemination Of Information To Consumers
Authors: Putri Mega Bellatus Sodier Suparman , Rini Rahayu Kurniati  , Ratna Nikin Hardati
Published: August 2024

The purpose of this research is to find out how social media functions in disseminating information about Ketan Duren Ala Nana Malang City to customers. Qualitative research method was used in this research. This research uses observation, semi-structured interviews, and audio and visual documentation as data collection methods. The location of this research is Villa Gunung Buring Jalan Band Palmerah No. 1A, Cemorokandang, Kedungkandang District, Malang City, East Java. In this research process, qualitative methodology was used for data collection. While source triangulation, time triangulation, and technique triangulation were used to verify the truth of the data. The research findings show that Ketan Duren Ala Nana Malang City has implemented information dissemination through social media quite well, but is assisted by resellers in Java. To disseminate information to consumers so as to get significant consumers.
ANALYSIS OF TRAFFIC ACCIDENTS IN THE WEST SURABAYA REGION (CASE STUDY: KALIANAK ROAD TO ROMOKALISARI HIGHWAY)
Authors: Eka Safitri  , Hadi Putra Kurnia , Chandra Agusdini Theresia Maria
Published: August 2024

The high volume of heavy vehicle traffic on Kalianak Street, Greges, Tambak Langon, Tambak Osowilangun and Romokalisari causes the roads to become increasingly congested, which causes frequent traffic accidents. Accident data used for 2017, 2018, 2019, 2020, 2021 and 2022 to determine accident-prone areas using the z-score method, the number of accidents for each level of victim severity using the Accident Rate method and to determine the amount of loss caused by accidents using the Gross method Output (Human Capital). The results of the analysis show that the highest number of accidents was in 2017 - 2016 for the classification of deaths, serious injuries and minor injuries on Romokalisari Street with an accident rate of 0.246 people per 1 million vehicle kilometers per year, the classification of seriously injured victims was 0.092 people per 1 million vehicle kilometers per year in Kalianak and minor injury victims of 0.406 people per 1 million vehicle kilometers per year on Romokalisari Street. The accident-prone area (Blacksite) with the largest value is the Tambak Osowilangun Z-Score for 6 years of 1.45 and the last year of 1.14. Total costs for accident victims based on the Gross Output (Human Capital) method for each year; 2017 amounting to IDR 12,529,506.23, in 2015 IDR 11,439,656,822, in 2019 IDR. 13,324,550,588, 2020 Rp. 11,010,983,853, in 2021 Rp. 19,071,950,542 and in 2022 Rp. 26,214,460,693.
Keywords: Traffic Accident; Amount of Casualty Costs Accident; Z-Score; Kalianak Road; Tambak Langon – Osowilangun; Romokalisari Highway.
Analisis Pengerollan dengan Sistem Hidrolik pada Mesin Roll Bending Portable
Authors: Vandu Ramadhan Cheraldy , Margianto  , Nur Robbi
Published: August 2024

Mesin bending portable dengan sistem hidrolik adalah alat yang digunakan untuk proses pembentukan plat dengan menekan benda kerja hingga mengalami perubahan bentuk yang menimbulkan tekukan logam pada sekitar daerah garis netral. Pada analisis pengerolan mesin bending dilakukan analisis pemilihan material yang pas guna memenuhi kemampuan mesin yang digunakan untuk pengerolan plat besi. Variable material yang dipakai pada analisis ialah : plat besi ST37 dengan ketebalan 3mm, 5mm, dan 8mm serta dengan panjang 560mm dan lebar 50mm. Hasil dari analisis pengerolan pada mesin roll bending portable, pengerolan plat ST37 diperlukan gaya tekan 2014,66 N/mm2 dengan ketebalan 3mm, 9374,9 N/mm2 dengan ketebalan 5mm dan 8mm 38399,94 N/mm2 dengan ketebalan 8mm. Tekanan hidrolik yang diperlukan didapatkan plat besi ketebalan 3mm dengan nilai 7401,36N, 5mm dengan nilai 12335N dan 8mm dengan dengan nilai 19737,54N
PENGARUH PELAPISAN SERAT KARBON PADA ALUMUNKUM 6061 TERHADAP SIFAT MEKANIK
Authors: Muhammad Rafli  , Priyagung Hartono  , Mochammad Basjir
Published: August 2024

Pengetahuan tentang teknologi akan terus berkambang dengan sendirinya melalui pemikiranpemikiran individu, kemajuan IPTEK yang sangat berkembang cepat membuka sebuah pemikiran dan gagasan dalam membentuk bahan  bahkan menodifikasi, yang pada umumnya kerangka atau chasis pada kendaraan menggunakan baja yang mana baja sangat berat jika dibangdingkan dengan alumunium tetapi pergantian sebuah material akan menyebabkan kurangnya keamanan dan kenyamanan karena alumunium dikenal dengan Tingkat kekuatannya sangat rendah jika dibandingkan dengan logam berat. Maka dilakukan penambahan serat karbon pada permukaan alumunum 6061 dengan ketebalan serat karbon 4 mm, 8 mm, dan 10 mm, pada arah serat 45o dan 90o dengan melakukan pengujian impack dan pengujian bending untuk melihat kekuatan material jika diberikan pembebanan.
 adhesi serat dan matriks seratnya sendiri. Sedang dengan arah 90o mengalami harga impack yang rendah diakibatkan arah 90o mengalami pembebanan sejajar sehingga serat kurang dalam menahan beban dengan baik melalui kohesi serat, kohesi matriks. Dan serat-serat tidak dapat membagi beban kejut dan distribusi energi yang merata. dengan adanya arah serat 45o dan 90o sedikit mempengaruhi beban maksimum pada alumunium 6061 dengan lapisan anyaman serat karbon yang mana nilai rata-rata pada arah 45o 90,7 dan 90o 80,8. Tetapi dengan adanya pengurangan ketebalan alumunium 6061 mengurangi nilai kekuatan bending pada spesimen karena kurangnya momen inersia, specimen pelapisan terlihat juga mengalami lepas disebabkan oleh kurangnya pelekatan anyaman serat karbon dengan alumunium 6061. Proses pelekatan dipengaruhi oleh kekerasan pada spesimen sehingga semakin kasar struktur material, maka koefisien gesekan tinggi.
 
Kata Kunci : Alumunium 6061; Serat Karbon; Uji Impack; Uji Bending.
Pengaruh Metode Pengeringan terhadap Kadar Flavonoid Simplisia Daun Cermai (Phyllanthus acidus L. Skeels)
Authors: Nisa Mujiatun , Jannah Raodatul , Qodri Udrika Lailatul , Sari Dewi Ratih Tirto
Published: August 2024

Tanaman cermai merupakan salah satu herba dalam famili Euphorbiaceae yang diketahui mengandung beragam senyawa bioaktif. Salah satu jenis senyawa bioaktif cermai yaitu flavonoid, yang banyak ditemukan pada daunnya. Pengolahan simplisia daun cermai menjadi penting untuk diperhatikan guna menjaga kandungan senyawa aktifnya. Penelitian ini bertujuan untuk menganalisis pengaruh kadar air dan flavonoid simplisia daun cermai dengan metode pengeringan sinar matahari, kering-angin dan pengeringan dengan oven suhu 40°C. Kadar air simplisia daun cermai dengan metode pengeringan oven menunjukkan kadar air paling rendah, yakni 7,87%. Sebaliknya, pengeringan dengan oven meningkatkan kadar flavonoid dengan kadar 3,32 mg QE/ g. pengeringan dengan teknik kering angin menunjukkan kadar flavonoid paling rendah yakni 2,04 mg QE/ g  dengan kadar air paling tinggi yakni 9,96%. Penelitian ini disimpulkan bahwa pengeringan daun cermai yang optimal yaitu dengan pengeringan oven bersuhu 40°C dengan kadar flavonoid yang tinggi dan kadar air yang masih memenuhi standar simplisia.
Exploring barriers to physical activity participation among female nursing students adhering to specific social-cultural norms in Indonesia: A qualitative study
Authors: Koa Apryadno Jose Al Freadman , Chou Cheng-Chen , Lindayani Linlin , Wang Chi-Jane
Published: August 2024

Background: The prevalence of insufficient physical activity is common among nursing students and impacts their academic performance. Research on obstacles to physical activity (PA) among religious women, notably Muslims, is limited.
Objectives: This study aimed to explore barriers to PA among Indonesian Muslim female nursing students and gather suggestions for overcoming those barriers.
Methods: This study used a qualitative descriptive design. Two focus groups were conducted with 12 Muslim female nursing students in Makassar, Indonesia. Interviews were audio-recorded and transcribed verbatim. The data were collected from May and July 2019. Inductive thematic analysis was used to identify core themes and sub-themes.
Results: Thematic analysis identified barriers to PA across four main themes: intrapersonal, interpersonal, institutional, and social-cultural related to religious context. Each theme included two to three sub-themes, totaling nine categories of PA participation barriers. Intrapersonal barriers consisted of low motivation, emotional states, and a sedentary lifestyle. Interpersonal challenges included a lack of family or friend support and family obligations. Institutional barriers involved academic workload prioritization, school environment inaccessibility, and absence of athletic curriculum policy. Socio-cultural barriers posed by religious expectations included gender-related concerns and modest dressing. Drawing from their perspectives as Muslim female nursing students, study participants proposed six strategies to address these barriers. Proposed solutions include promoting PA through Apps, forming female team-up clubs, providing designated exercise spaces, and implementing mandatory athletic courses for nursing students at the institutional level. Additionally, offering female instructors and private exercise rooms could reduce the barriersfrom a socio-cultural perspective caused by religious expectations.
Conclusions: The study found that Muslim female nursing students with dual roles face increased barriers to PA participation, driven by intrapersonal and interpersonal levels, nursing learning load, and religious norms. Schools could build environments to meet the religious expectations within Indonesian society to promote PA for Muslim female nursing students. For example, the practical strategies include offering private rooms or female instructors when they physically exercise in school.
The linguistic and construct validity of the Malay version of the Coping Self-Efficacy Scale (CSES-My): Evidence from a sample of Malaysian parents of children with leukemia or lymphoma
Authors: Tan Chai-Eng , Tan Kit-Aun , Lau Sie Chong Doris , Teh Kok Hoi , Sidik Sherina Mohd
Published: August 2024

Background: Parents of children with hematological cancers such as leukemia and lymphoma need to cope with stress related to their child’s diagnosis. The Coping Self-Efficacy Scale is a widely used and validated tool to measure an individual’s confidence in dealing with stressful situations. Appropriate translation and validation are needed to produce a localized language version suitable for Malaysian contexts.
Objective: The study aimed to examine the linguistic and construct validity of the Malay version of the Coping Self-Efficacy Scale (CSES-My) among parents of children with hematological cancer.
Methods: The CSES-My was created through a sequential series of steps, starting with the translation of the original English version, followed by cultural adaptation, and then cognitive interviewing. The 26-item CSES-My was self-administered in a sample of parents of children with leukemia and lymphoma from October 2021 until February 2022. They were recruited via online or face-to-face methods. Exploratory factor analysis was performed to examine the construct validity of the CSES-My.
Results: A total of 165 complete responses were analyzed. The scale has two factors, including Personal Coping and Social Coping, accounting for 58.3% of the variance. Personal Coping (19 items, Cronbach’s alpha = 0.958) represented the respondents’ self-efficacy for independently executing coping strategies, whether through solving problems or changing the way they think about the situation. Social Coping (6 items, Cronbach’s alpha = 0.867) represented their confidence in executing coping strategies, which involved using social resources such as seeking external support, distraction, and avoiding loneliness.
Conclusions: The CSES-My had reliable and valid psychometric properties, providing evidence for its utility in evaluating coping self-efficacy among parents of children with leukemia or lymphoma in Malaysia. The CSES-My is a valuable tool for nurses and other healthcare professionals investigating coping self-efficacy in Malay-speaking populations, and it may also aid in the development of future coping interventions.
Nursing students’ perceptions of the qualities of clinical instructors in a public university in Jordan: A qualitative study
Authors: Shudifat Raed , Algunmeeyn Abdullah , Mahasneh Deema , Al-Oran Haytham , Alduraidi Hamza , Shosha Ghada Abu
Published: August 2024

Background: Nursing clinical education is a key to developing nursing students’ knowledge, skills, and competencies. Few studies have attempted to explore students’ perceptions regarding the qualities of effective clinical instructors.
Objective: The current study aims to explore nursing students’ perceptions of effective clinical instructors’ qualities in Jordan. 
Methods: A qualitative exploratory approach was used to deepen our understanding of nursing students’ perceptions of effective clinical instructors’ qualities. A total of 21 nursing students were involved, and data were collected from June to August 2023. Data were analyzed using the thematic analysis approach.
Results: The thematic analysis revealed two main themes. The first theme was professional qualities, comprising four subthemes: professional knowledge and experience, acting as a role model, performing as a caring one, and assembling effective communication. The second theme was building a good rapport. The findings demonstrated that clinical instructor qualities impacted how students perceived their teaching effectiveness, and they identified professional knowledge and competence as crucial qualities of an effective clinical instructor. It was acknowledged that caring behaviors and effective communication skills were essential behavioral attributes for clinical instructors. 
Conclusion: Nursing students have valued particular characteristics of effective clinical instructors. These characteristics were knowledge, caring, relationships, role models, and communication. Further research is needed to validate the study’s findings.
LIMIT FUNCTION MISCONCEPTION IN MATHEMATICS EDUCATION STUDENTS
Authors: Indriani Sri , Ahsan Muhammad , Aras Andi , Buhaerah
Published: August 2024

The purpose of this study was to identify and analyze the types of misconceptions that occur among students of the Mathematics Tadris Study Program at IAIN Parepare who do not understand the limit of functions material. This research uses a qualitative approach with a case study type, which means processing data through the use of narration or words, is descriptive in nature, avoids the use of numbers, and focuses research on one topic. The research subjects were 18 semester II students who took the essay test. Qualitative data were analyzed using data reduction methods, data presentation, and drawing conclusions. The results of the study show several types of misconceptions experienced by students: types of classificational misconceptions, including errors in stating the nature and appropriate rules for solving problems; types of correlational misconceptions, including errors in representing the problems; and types of theoretical misconceptions, including errors in understanding the concept of limit functions. Factors causing this misconception include the students themselves, namely the inability to understand the concept of limit function; and the cause of the lecturer is the lack of emphasis given to the material. The book doesn't have a complete explanation. Friends in the class environment that do not support are influenced by context. Wrong learning methods and using language that is difficult to understand.
DEVELOPING DISCOVERY LEARNING-BASED STUDENT WORKSHEET ON THE EQUATION OF A STRAIGHT LINE MATERIAL
Authors: Saputri Yessi Indha , Rahmi Depriwana , Kurniati Annisah , Yuniati Suci
Published: August 2024

This research aimed at developing and producing valid, practical, and effective Discovery learning-based student worksheets on Equation of a Straight Line material. Research and Development with the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. This research was administered at State Junior High School 18 Pekanbaru. The subjects of this research were validators who were lecturers, teachers, and students at State Junior High School 18 Pekanbaru. The object was a Discovery learning-based student worksheet on Equation of a Straight Line material. The data were qualitative and quantitative. The instruments used were a questionnaire sheet and posttest questions. The research findings showed that the Discovery learning-based student worksheet developed was in a very valid category with a percentage of 86.37%. It was very practical for the small group, with a percentage of 84.4%, and it was very practical for the limited group, with a percentage of 85.3%. Based on the posttest result, the score of tobserved was higher than ttable, 4.007>1.667, with dk=24 and 5% or 0.05 significant level. So, Ha was accepted, and H0 was rejected. It meant there was a difference in learning achievement between experimental and control groups. The effectiveness of student worksheet use on Equation of a Straight Line material could be identified from the dengan menunjukkan posttest mean scores of experimental (83.54) and control (75.2) groups.
IMPLEMENTATION OF THE PBL MODEL TO IMPROVE THE MATHEMATICAL PROBLEM-SOLVING ABILITY OF CLASS XII MIPA HIGH SCHOOL STUDENTS
Authors: Sukma Nilam , Heleni Susda , Roza Yenita
Published: August 2024

This research aims to improve the learning process and mathematical problem-solving abilities (KPMM) of class XII MIPA students at SMA Negeri 1 Langgam by applying the Problem-Based Learning (PBL) model. This research is collaborative classroom action research, where researchers and mathematics teachers collaborate to implement the action. Researchers carry out actions while mathematics teachers act as observers during the learning process. This research took two cycles and used various learning tools and data collection instruments. The tools used include syllabus, Learning Implementation Plan (RPP), Student Worksheets (LKPD), teacher activity sheets, student activity sheets, and KPMM tests as data collection instruments. Analysis of activity sheets shows that there has been an improvement in the learning process, with learning becoming more in line with the implementation plan and students appearing more active. In addition, KPMM data analysis shows a significant increase from cycle I to cycle II, with the percentage of students who meet the KPMM criteria increasing from 69.39% in the first cycle to 83.80% in the second cycle. These findings conclude that applying the PBL model effectively improves the learning experience and KPMM results of students at SMA Negeri 1 Langgam in the 2023/2024 academic year.
PENGARUH RESILIENT SAFETY CULTURE DAN JOB CRAFTING TERHADAP SERVICE PERFORMANCE YANG DIMEDIASI OLEH WORK ENGAGEMENT
Authors: Sofuah Siti , Fauziah Firly , Emilisa Netania
Published: August 2024

Penelitian ini bertujuan untuk menganalisis pengaruh dari Resilient Safety Culture, Job Crafting terhadap Service Performance melalui Work Engagement sebagai variabel mediasi pada karyawan Bank BUMN di Jakarta Barat. Penelitian menggunakan metode kuantitatif dengan jumlah responden sebanyak 200 karyawan dengan menggunakan metode purposive sampling. Pengujian hipotesis dilakukan dengan metode structural equation model (SEM) dengan bantuan software AMOS. Hasil menunjukan bahwa Resilient Safety Culture terdapat pengaruh positif terhadap Work Engagement. Selanjutnya Job Crafting berpengaruh Positif terhadap Work Engagement. Terakhir Work Engagement berpengaruh positif terhadap Service Performance 
 
Kata kunci : Job Crafting, Resilient Safety Culture, Service Performance, Work Engagement.
HUBUNGAN KEMAMPUAN BERPIKIR KRITIS PADA MAHASISWA MELALUI PENGGUNAAN MEDIA SOSIAL DALAM PENDIDIKAN
Authors: Imamudin Imamudin , Fahmi Rizal , Saepudin Saepudin , Setiawardani Wawan
Published: August 2024

Pada era digital ini, perkembangan ilmu pengetahuan dan teknologi bukan hanya membawa perubahan dan kemudahan dalam tata cara kehidupan manusia, tetapi juga membawa perubahan pada pola pikir masyarakat saat ini. Penelitian ini dilakukan bertujuan untuk mencari tahu hubungan kemampuan berpikir kritis pada mahasiswa melalui penggunaan media sosial dalam pendidikan. Berdasarkan penelitian-penelitian yang ada, sayangnya banyak anak muda terkhususnya mahasiswa masih menganggap remeh kebutuhan akan kemampuan pola pikir kritis. Metodologi dalam penelitian ini menggunakan studi kepustakaan atau studi literature. Sayangnya banyak anak muda terkhususnya mahasiswa masih menganggap remeh kebutuhan akan kemampuan pola pikir kritis. Hasil penelitian memastikan bahwa kemampuan berpikir kritis pada mahasiswa melalui penggunaan media sosial dalam pendidikan ini memiliki hubungan yang erat serta diperlukan pula support system yang bisa memberikan dorongan dan motivasi untuk mengejar keinginan dan memiliki kemampuan yang diinginkan.
Bir Kömür Madeninin Yeraltı ve Yerüstü İşletmelerinde Yaralanmayla Sonuçlanan İş Kazalarının Analizi
Authors: Erol İlknur
Published: August 2024

Maden işletmelerinde meydana gelen kazalar, çok ciddi yaralanmalara, maddi kayıplara ve ölümlere neden olmaktadır. Bu çalışmada maden işletmelerinde meydana gelen kazaların nedenleri ortaya konulmuş; bir kömür madeninin yeraltı ve yerüstü işletmelerinde 2011-2021 yılları arasında meydana gelen ve yaralanmayla sonuçlanan kazalar işletme, işyeri, sanat grupları ve yaralanan uzuv bazında analiz edilmiştir. Yaralanmalı iş kazalarının daha çok yeraltı işletmelerinde, pano-ayak üretim işyerlerinde, kömür üretiminden sorumlu olan pano-ayak üretim işçilerinde meydana geldiği tespit edilmiştir. Ayrıca pano-ayak üretim işçilerinde el, parmak ve ayak parmak yaralanmalarının yüksek olduğu belirlenmiştir. Yerüstü işletmelerinde ise mekanizasyon ve pres işçilerinde en fazla yaralanmaların olduğu görülmüştür. Bu sanat grubunda da el-parmak ve ayak parmak uzuvlarında yaralanmaların yoğun olduğu tespit edilmiştir. İş kazalarının önlenebilmesi için alınması gereken tedbirler belirtilmiş; özellikle belirli işyerlerinde ve sanat gruplarında çalışanlar için uygun kişisel koruyucu donanım seçimi ve kullanımının denetimi hususunda çeşitli önerilerde bulunulmuştur.
Acil Durum Planları ve Acil Durum Yönetimi Konulu Lisansüstü Tezlerin Bibliyometrik Analizi
Authors: Öztürk Başak , Yurtlu Feyza Betül , Güven Emel , Eren Tamer
Published: August 2024

Afetlerin insanlar ve çevre üzerindeki etkileri artarak devam etmekte ve bu durum, afetlerle mücadele konusundaki çalışmaların önemini her geçen gün daha da artırmaktadır. Bu nedenle, afet yönetimi ve afet planlarıyla ilgili yapılan lisansüstü düzeydeki araştırmaların bibliyometrik analizi oldukça değerli bir kaynaktır. Bu araştırma, 1993-2024 yılları arasında Yükseköğretim Kurumu Ulusal Tez Merkezi (YÖKTEZ) arşivinde yayınlanmış lisansüstü tezler incelenmiştir. Yapılan analizler, bilimsel çalışmaların çoğunlukla yüksek lisans düzeyinde olduğunu ortaya koymaktadır. Ayrıca, 2019 yılının en yoğun araştırma dönemi olduğu ve nicel çalışmaların nitel çalışmalardan daha yaygın olduğu belirlenmiştir. Anket yönteminin en çok tercih edilen yöntem olduğu görülmüştür. Tezlerin konularının incelenmesi sonucunda, en fazla çalışılan konunun "kamu yönetimi ve deprem mühendisliği" olduğu tespit edilmiştir. İnşaat Mühendisliği en fazla tercih edilen ana bilim dalı olurken, İstanbul Teknik Üniversitesi en çok çalışma yapan üniversite olarak belirlenmiştir. Tezlerin sınıflandırmasında, tez türü, tez yılı, üniversite, üniversite türü, enstitü, ana bilim dalı, konu, yöntemler ve anahtar kelimeler olmak üzere toplam 9 kriter dikkate alınmıştır. Bu analizler, afetlerle mücadele alanındaki araştırmaların önceliklerini ve trendlerini belirlemek adına önemli bir yol gösterici olarak değerlendirilebilir.
An efficient multi-fidelity simulation approach for performance prediction of adaptive cycle engines
Authors: Zou Wangzhi , Song Zhaoyun , Wang Baotong , Wen Mengyang , Zheng Xinqian
Published: August 2024

Adaptive cycle engine (ACE) with multi-stream, modulated bypass ratio, and high-thrust/high-efficiency mode provides the capability of multiple mission adaptation for the next-generation aviation propulsion system. The low-fidelity zero-dimensional (0D) performance simulation method is commonly adopted in conventional engines such as turbofan and turbojet. However, it is hard to accommodate well to ACE with complex variable geometry schemes and strong interaction between components. This paper presents an efficient multi-fidelity simulation approach, often referred to as component zooming, for predicting the performance of ACE with the three-stream configuration. The one-dimensional (1D) mean-line models of the adaptive fan and low-pressure turbine (LPT) are integrated into the 0D ACE model by the iteratively-coupled method. The performance predicted by the multi-fidelity ACE models with different component zooming strategies is compared. The maximum deviations of thrust, specific fuel consumption, turbine inlet temperature, and bypass ratio between the 0D/1D Adaptive Fan/1D LPT coupled model and 0D ACE model are −10.8%, −4.4%, −5.4% (−75 K), and 1.6%, respectively, which are considerable and non-negligible for the application in the design stage of ACE. The computing time of all the multi-fidelity models is less than 2 minutes. The effects of the key aerodynamic parameters of the adaptive fan and LPT on the engine performance are also evaluated. The proposed approach provides a generic and efficient solution for multi-fidelity ACE performance prediction with acceptable computing resource requirements and time cost, which is applicable in the engine conceptual and preliminary design stage.
Peran Kepala Sekolah dalam Menumbuhkan Kepedulian Lingkungan di Sekolah (Studi Kasus di SMP Negeri 5 Jombang)
Authors: Supriyadi  , Suwandi
Published: August 2024

Caring for the environment can create good conditions for schools to become a comfortable place of learning and awareness of the school community, so that in the future these school members can take responsibility for efforts to save the environment for Indonesia. The focus of this research and development includes: 1) The role of school principals in fostering awareness in SMPN 5 Jombang, 2) Knowing the characteristics of environmental care in SMPN 5 Jombang, 3) Knowing the constraints and solutions for environmental care in SMPN 5 Jombang. The research uses descriptive qualitative research with a phenomenological approach. Data collection techniques using observation, interviews, and documentation. For data analysis techniques using: data reduction, data display, data verification. To check the validity of the data by: (1) credibility: a. extension of participation, b. perseverance of observation, c. triangulation, d. Negative Case Analysis, e. Using reference material, f. using member check, (2) transferability, (3) dependability, (4) confirmability. The results showed that: (1) Principal leadership is very important because it is a driving force for school resources, especially teachers and school employees, (2) characteristics in the form of environmental care activities that can make the character of students who care about the environment, (3) obstacles and solutions in growing environmental care, namely: In schools there are students who have not complied with adiwiyata school regulations, new students who are not familiar with environmental culture due to differences in family background, narrow land, and the solution is that school residents must work together same to remind teachers especially to students, policing through environmental regulations in the form of prohibitions and penalties
Penerapan Metode Muhadatsah untuk Meningkatkan Maharah Kalam Siswa di Lembaga Kursus Bahasa Arab (LKBA) “OCEAN” Pare Kediri
Authors: Ike Nur Isnaini Ayu , Niswah MZ. Isniyatun
Published: August 2024

Abstract— This study aims to find out how the application of the Muhadatsah method in improving students' Maharah Kalam. This research is a descriptive research that uses a qualitative approach with research subjects students at the OCEAN Pare Kediri Arabic Language Course Institute. Data collection was carried out by observation, interviews and documentation. The research results show 1). The application of the Muhadatsah Method at the OCEAN Pare Arabic Course Institute starts with the selection of teachers. Teachers must take a minimum of a 1 month course at LKBA OCEAN so they can apply muhadatsah teaching techniques starting from delivering mufrodats, talking to students using the mufrodats that are delivered, providing evaluation materials ranging from rote memorization to oral exams to students. The book used is a self-written book made by the institution namely Ustadz Thoyyib and Ustadz Wahid. As for the process of implementing learning, the teacher must have a learning plan that includes material. The muhadatsah method used by teachers at OCEAN Arabic language course institutions includes giving mufradat, memorizing, practicing Arabic, ta'aruf, presentations, debates, singing, and asking questions. 2). The first application of the muhadtasah method for students at the OCEAN Arabic Course institution is to develop the mufrodats that have been given. Second, processing words with the rules of nahwu and shorof which suit the dlomir and the other person. Third, communicate in Arabic in accordance with Arabic language courses spontaneously. And the fourth, actively speaking both inside and outside the bi'ah lughowiyah area. 3). Supporting factors in learning Arabic for students at the OCEAN Arabic Language Institute are the active Arabic language environment that is applied starting from the leaders, teachers, institutional staff and students. Adequate facilities both from buildings and learning equipment. Students have a high learning enthusiasm. The inhibiting factors were the different language backgrounds before entering LKBA OCEAN, some were already proficient and some were not proficient, and some students' memorization was weak.
Keyword: Application, Muhadatsah, Maharah Kalam
Performance Analysis of the Brimob Training Unit (Satlat Brimob) Using a SWOT Approach
Authors: Iskandar Iskandar , Ahmad Slamet
Published: August 2024

This research aims to analyze organizational performance measurements at the Brimob Training Unit (Satlat Brimob) using the SWOT method. The study employs a descriptive analysis with a qualitative approach. The findings reveal several strategies derived from the SWOT analysis. The Strengths-Opportunities strategy involves deploying trained resources to address security needs, collaborating with agencies for suitable and renewable equipment and weapons procurement, and conducting HR training with nationally and internationally accredited agencies. The Weaknesses-Opportunities strategy includes coordinating with the Indonesian National Police (INP) Headquarters to fulfill personnel requirements according to the Personnel and Equipment Composition List (DSPP) and seeking additional budget allocations and supporting facilities. The Strengths-Threats strategy focuses on positioning trained human resources in security areas to counter disturbances from radical groups and evolving crime modes, as well as utilizing adequate equipment to prevent security threats and detect sophisticated criminal activities. The Weaknesses-Threats strategy involves assigning the best personnel to maintain security against radical groups and implementing supporting facilities with information systems to detect crime routes. The research highlights the importance of strategic resource allocation, inter-agency collaboration, and continuous improvement in training and equipment to enhance the Brimob Training Unit's organizational performance and address security challenges effectively. These findings provide valuable insights for improving the operational efficiency and effectiveness of the Brimob Training Unit in maintaining public safety and security.
UJI GOODNESS OF FIT DENGAN STATISTIK PULKSTENIS - ROBINSON DALAM MODEL REGRESI LOGISTIK ORDINAL
Authors: Niken  , Somayasa Wayan , Budiman Herdi , Ruslan  , Adi Wibawa Gusti Ngurah
Published: August 2024

Tujuan dari penelitian ini adalah: 1) Penerapan uji goodnessof fit pada model regresi logistik ordinal kecelakaan lalu lintas, dan 2) Mengetahui Faktor yang mempengaruhi tingkat keparahan Kecelakaan Lalu Lintas di Kota Kendari. Pengujian goodness of fit dengan menggunakan statistik pulkstenis - robinson, mengelompokkan pengamatan menggunakan pola kovariat yang diperoleh dari kovariat kategorik. Setiap pola kovariat kemudian dibagi menjadi dua berdasarkan median skor ordinal. Statistik uji chi – square diperoleh dengan menggunakan tabel observasi dan frekuensi yang diperkirakan, yaitu di mana  disebut frekuensi yang diamati dari sel  dan  adalah frekuensi yang diharapkan ketika hipotesis nol benar dan semua frekuensi yang diharapkan  lebih besar dari ,  dari  didekati dengan distribusi chi-square derajat kebebasan , yaitu . Uji pulsteknis robinson memiliki kekuatan uji yang lebih baik pada pada sampel yang berukuran besar. Misalkan kita mendapatkan  grup.  empiris dari  untuk , menujukan kurva yang saling berdekatan. Sedangkan  empiris dari  untuk menunjukkan kurva menyimpang secara nyata. Dalam penelitian ini, pengujian goodnessof fit dengan statistik pulkstenis-robinson akan digunakan dalam model regresi logistik ordinal. Data yang digunakan adalah data sekunder yang diperoleh dari POLRESTA Kendari mengenai kecelakaan lalu lintas tahun 2021. Setelah dilakukan analisis, statistik hitung pulkstenis – robinson yang diperoleh adalah sebesar 10.9099 pada taraf nyata 5%, =11.070, dalam hal ini , sehingga gagal tolak  yang berarti bahwa model telah sesuai. Dari hasil uji signifikan, pada taraf nyata 5%, faktor – faktor yang berpengaruh signifikan terhadap tingkat keparahan kecelakaan lalu lintas di kota kendari adalah jenis kelamin korban, dengan statistik uji wald sebesar 3.053>(1.960).
Re-placing Race in the Public Space
Authors: Pelillo Giulia
Published: August 2024

In this article I engage with the un- and re-making of monuments in the context of the globalization and mediatization of Black Lives Matter and anti-racist activism. I analyze in particular two examples that display transcultural negotiations of antiracism against the background of different colonial histories:

The induction of Josephine Baker to the French Pantheon in November 2021, which opens the space of a key monument of French heritage to a black woman for the first time.
The defacing of the statue of the Italian journalist and prominent intellectual Indro Montanelli in Milan in June 2020.

The analysis emphasizes, on the one hand, the fluidity characterizing the transnational circulation of language, media and spatial practices. On the other, it points to multiple asymmetries deriving from the globalization and the transculturalization of communication. In order to take both aspects into account, I use a border perspective, and expand the category of ‘monument’ to include processes of un- and re-making heritages. In particular, I de-border the concept of language and crisscross the borders between discursive spaces and material spaces of representation.
The article contributes to diversify postcolonial theory by showing that labels such as ‘European’ (post)coloniality or ‘global’ anti-racism are far too reductive with respect to the diversity of colonial histories and postcolonial realities. Accordingly, it pleads for putting transculturality at the core of decolonial struggles within and outside academia.
Vantagens e desvantagens da utilização de Leitos Construídos para os processos de fitorremediação com foco na Educação Ambiental e tratamento de esgotos
Authors: Kziozek Luana , Lorscheider Carla Andreia
Published: August 2024

O termo “wetlands” (zonas úmidas) refere-se a locais naturais alagados periódica ou permanentemente, que apresentam diversos serviços ambientais. Apresentam-se como alternativa os leitos construídos, desenvolvidos com intuito de acelerar, melhorar e direcionar processos de biorremediação. Sendo assim, objetiva-se observar as aplicações dos leitos construídos com fitorremediação e as vantagens e desvantagens de sua utilização na educação ambiental e tratamento de esgoto. Para isso, foi realizada uma revisão bibliográfica, com busca através do Google Acadêmico, utilizando as palavras-chave: "wetlands" "fitorremediação" "desvantagens" e "wetlands" "fitorremediação" "vantagens". Foram obtidos no total 131 trabalhos. Estes passaram por uma avaliação de qualidade, sendo assim analisados nesta revisão dois estudos de caso e quatro revisões bibliográficas que corresponderam aos filtros de seleção: serem artigos e apresentarem o sistema de leito construído com fitorremediação. Observou-se que os leitos construídos são utilizados na remediação de efluentes de esgoto domiciliar e industrial, tendo como objetivo principal a reciclagem de efluentes. Nota-se que as macrófitas são importantes componentes desses sistemas por seu papel fitorremediador, que promove a remoção de nutrientes excessivos do efluente passíveis de causar distúrbios ecológicos, como eutrofização, se não equilibrados. Das vantagens do sistema podem ser citadas seu uso para a educação ambiental em escolas de ensino regular, redução de nutrientes excedentes como nitrogênio e fósforo, baixo custo, fácil manutenção e fornecimento de área verde. Dentre as desvantagens do sistema podem ser citadas a impossibilidade de padronização do sistema quanto às porcentagens de remoção de nutrientes excedentes, a produção rápida de biomassa e a suscetibilidade do sistema às alterações climáticas e de toxicidade. Assim, os sistemas de Wetlands construídos são importantes na redução excesso de nutrientes presentes em efluentes de esgoto, entretanto se faz necessário um aprofundamento sobre a eficiência desses sistemas em diferentes condições de clima e relevo e do comportamento dos fitorremediadores utilizados nessas condições.
Innovations in the management of epistaxis secondary to hereditary hemorrhagic telangiectasia: our evolution to injection sclerotherapy as the treatment of choice
Authors: Kumar Nitish , Lança Gomes Pedro , Marino Michael J. , Miglani Amar , Lal Devyani
Published: August 2024

Introduction

We compared the efficacy of intralesional sclerotherapy using 3% sodium tetradecyl sulfate with non-sclerotherapy-based treatments for Hereditary Hemorrhagic Telangiectasia-associated epistaxis management.

Methodology

This is a retrospective study of patients who underwent surgical intervention for HHT-associated epistaxis management from 01/2010–02/2024. Patients undergoing sclerotherapy with intralesional 3% sodium tetradecyl sulfate were included in the sclerotherapy group and others undergoing conventional non-sclerotherapy-based procedures in the non-sclerotherapy group. Outcomes like breakthrough epistaxis, emergency visits, intra-op blood loss, blood transfusions, and procedure complications in the 3-month perioperative period were compared.

Results

Twenty-three patients who underwent 74 intranasal procedures were identified. In the sclerotherapy group, 17 patients underwent 47 procedures. In the non-sclerotherapy group, 10 patients underwent 27 procedures. Till the 3rd post-treatment month, fewer breakthrough epistaxis episodes were observed after sclerotherapy procedures (13/47) vs. non-sclerotherapy procedures (14/27); (p = 0.037). Intraoperative blood loss was significantly lower during sclerotherapy (median: 10 ml) vs. non-sclerotherapy procedures (median: 50 ml); p < 0.001. The time interval between successive procedures was not significantly different in the sclerotherapy (median 6.5 months) vs. the non-sclerotherapy group (median 3.5 months); p = 0.13. Nasal crusting was the most common complication in the sclerotherapy group (36.9%). Two patients in each group had new onset septal perforation, none of the patients had vision loss or cerebrovascular accident. One emergency department visit was reported in the sclerotherapy group vs. 7 (in 3 patients) in the non-sclerotherapy group.

Conclusions

Compared to non-sclerotherapy treatments, intralesional sclerotherapy for epistaxis in HHT is more effective in decreasing breakthrough epistaxis, and has lower intraoperative blood loss.
Effects of different sensory integration tasks on the biomechanical characteristics of the lower limb during walking in patients with patellofemoral pain
Authors: Ting Fan , Zeyi Zhang
Published: August 2024

Purpose

This study aimed to analyze the biomechanical characteristics of the lower limb in patients with patellofemoral pain (PFP) while walking under different sensory integration tasks and elucidate the relationship between these biomechanical characteristics and patellofemoral joint stress (PFJS). Our study’s findings may provide insights which could help to establish new approaches to treat and prevent PFP.

Method

Overall, 28 male university students presenting with PFP were enrolled in this study. The kinematic and kinetic data of the participants during walking were collected. The effects of different sensory integration tasks including baseline (BL), Tactile integration task (TIT), listening integration task (LIT), visual integration task (VIT) on the biomechanical characteristics of the lower limb were examined using a One-way repeated measures ANOVA. The relationship between the aforementioned biomechanical characteristics and PFJS was investigated using Pearson correlation analysis.

Results

The increased hip flexion angle (P = 0.016), increased knee extension moment (P = 0.047), decreased step length (P < 0.001), decreased knee flexion angle (P = 0.010), and decreased cadence (P < 0.001) exhibited by patients with PFP while performing a VIT were associated with increased patellofemoral joint stress. The reduced cadence (P < 0.050) achieved by patients with PFP when performing LIT were associated with increased patellofemoral joint stress.

Conclusion

VIT significantly influenced lower limb movement patterns during walking in patients with PFP. Specifically, the increased hip flexion angle, increased knee extension moment, decreased knee flexion angle, and decreased cadence resulting from this task may have increased PFJS and may have contributed to the recurrence of PFP. Similarly, patients with PFP often demonstrate a reduction in cadence when exposed to TIT and LIT. This may be the main trigger for increased PFJS under TIT and LIT.
Developing and testing a community based, online vs. face-to-face peer led intervention to improve mental well-being in Cambodian adults with physical disabilities
Authors: Best Paul , Maddock Alan , Ean Nil , Montgomery Lorna , Armour Cherie , Mulholland Ciaran , Blair Carolyn
Published: August 2024

Background

Despite growing international attention, there remains an urgent need to develop mental health services within low and middle income countries. The Khmer Rouge period in Cambodia saw the destruction of all health services infrastructure in the 1970s. Consequently, Cambodia has struggled to rebuild both its economy and healthcare system, with the number of qualified mental health clinicians remaining disproportionately low. Resultantly, there is a pressing need to develop low-cost community based alternatives of mental healthcare.

Methods

Using a mixed methods design, researchers developed an 8-week peer-led intervention, known as a Friendship Group, for adults with physical disabilities using both face-to-face and online delivery methods. The Wilcoxon Signed-Rank test was used to assess changes in pre-post survey scores and qualitative data was collected in form of five focus groups post intervention.

Results

41 participants were allocated across four Friendship groups – two were online and two face-to-face. Attrition rate was 22% post-intervention (n = 32). ITT analyses showed a statistically significant decrease in psychological distress scores [Z = −3.808, p < .001] from pre [Mdn = 20, IQR = 16.5–25.5] to post [Mdn = 16, IQR = 14–18.5] intervention. A Wilcoxon signed-ranks test also showed a statistically significant decrease in PTSD scores [Z = −2.239, p < .025] from pre [Mdn = 4, IQR = 3–5] to post [Mdn = 3, IQR = 2.75–4] intervention. There was also a statistically significant decrease in worry scores [Z = −3.904, p < .001] from pre [Mdn = 5, IQR = 3.5–6.5] to post [Mdn = 3, IQR = 3–4] intervention. There were no significant group differences between the face to face and online groups. A number of interconnected themes emerged from focus group data (n = 5), these included the mental health benefits of Friendship Groups as conceptualised through knowledge acquisition, skill development and peer support.

Conclusions

The Friendship group intervention delivered in both online and face-to-face formats appears feasible and acceptable within the Cambodian context. Initial data revealed positive findings in terms of reduction in psychological distress, worry and PTSD symptoms as well increased feeling as calm.
Research on the energy transmission mode of a three-port DC–DC converter based on ultra-thin silicon steel
Authors: Hou Lei , Zhao Ming , Wang Yixiao , Qu Feng , Shao Dan , Yang Xin , Liu Yang , Yang Zhaoning
Published: August 2024

With the introduction of China’s “Carbon Peaking Action Plan Before 2030,” the transformation of the power industry has released huge opportunities and potential. The DC distribution network can well-coordinate the contradiction between distributed power and grid access, fully develop the benefits of distributed energy, and become a new direction for the development of the power industry. However, the current traditional DC–DC converters have problems such as single-topology structure and low power density, which can only complete one-way transmission of energy; hence, the distributed energy cannot be fully utilized. Addressing the problem of distributed energy transfer, this paper is based on a three-port DC–DC converter for a low-voltage DC distribution network to realize energy transfer between the DC distribution network, distributed energy, and low-voltage load. First, the energy transfer modes of the three-port DC–DC converter are introduced. Combined with the converter topology and energy transfer mode, a simplified equivalent model of the converter is established. The voltage gain characteristics and frequency characteristics of this converter are studied. Furthermore, the effects of the excitation inductance to primary resonance inductance ratio parameter k and quality factor Q on the voltage gain characteristics of the converter are discussed. On this basis, the resonant cavity design of the converter is based on the optimal selection of parameters k and Q so that the converter can meet the voltage gain requirements in both forward and reverse operations. The simulation results under different loads verify the reasonableness of the resonant cavity component selection.