bluuebunny/crossref_metadata_2025 huggingface dataset:
Prevalence of pest nematodes associated with soybean (Glycine max) in Wisconsin from 1998 to 2021
Authors: MacGuidwin A. E. , Smith D. L. , Conley S. P. , Saikai K. A.
Published: March 2024

The prevalence of Heterodera glycines and other cyst and vermiform genera was determined from 8,009 soil samples over two decades. Prevalence of cyst nematodes for farms increased from 16% in 1998 to 1999, reaching a peak of 40%, with marked differences among Wisconsin’s nine agricultural districts in how much the odds of a positive test increased. Estimates at the sample scale also increased over time but peaked at 29%. Assay of all nematodes beginning in 2012 showed Pratylenchus, Helicotylenchus, and Xiphinema to be more prevalent in Wisconsin soybean fields than cyst nematodes. Prevalence estimates for Pratylenchus and Helicotylenchus for soybean and rotation crops ranged from 76 to 89% and 58 to 83%, respectively. Species identification of Pratylenchus from a subset of the samples revealed six species. The majority of cyst-positive samples were infested with Pratylenchus, and count data showed that the number of cyst eggs and juveniles per 100 cm3 soil was 60% lower in samples positive for Pratylenchus. The influence was reciprocal, as Pratylenchus population densities were 41% lower in samples positive for cyst nematodes, suggesting a competitive interaction. The Wisconsin soybean nematode testing program provides a useful model for estimating nematode prevalence using citizen-based surveys.
Isolation and Identificationof Octadecane-3-on Compound From Ethyl Acetate Fraction of Momordica balsamina L. Leaves
Authors: Pongoh* Emma Julien , Rumampuk Rymond Jusuf , Paat Vlagia Indira , Rumengan Stefan Marco , Soputan Julieta
Published: March 2024

Momordica balsamina L. is a wild plant that generally grows in moist soil and gets a lot of sunlight. The leaves and fruit are reported to have various medicinal and nutritional properties.  This study aimed to isolate and identify the compounds contained in the ethyl acetate fraction in Momordica balsamina L The isolation stage was carried out by the maceration method and the separation and purification of the compounds using gravity column chromatography methods to obtain isolate fraction F1.6.2 with a sample weight of 2.4 mg. Identification of compounds using proton nuclear magnetic resonance (1H-NMR) and carbon nuclear magnetic resonance (13C-NMR) spectroscopy techniques. The proposed identified compound is octadecan-3-one or 3-octadecanone with the molecular formula C18H36O
The Effect of Using Quizizz Application in Learning with Science Education for Sustainable Development Approach on Students' Critical Thinking Ability
Authors: Ramadhan* Nurul Huda , Fadly Wirawan
Published: March 2024

In TIMSS 2019, Indonesia is ranked 56 out of 58 countries, so teachers need to know the criteria for interactive media, learning media that must be used by teachers so that they are happy and acceptable to students. Quizizz is one of the interactive media chosen by teachers as a medium for learning because it is based on games and technology. The purpose of this study was to determine the effect of using Quizizz media on students' critical thinking skills in science subjects This research method uses a quantitative approach, because the data presented is in the form of numbers with a weak-experimental research design. The number of samples in this study was 64 students, who were divided into experimental groups and control groups. The instruments given are test sheets and satisfaction questionnaire sheets. Based on the results of research that has been carried out pretest on the control class and experimental class obtained  an effect convention value  of 0.19 which can be said there is no significant difference between the control class and the experimental class and after being given postest treatment obtained by the control class and experimental class  the effect convention value This can be said to be a significant difference between the control class and the experimental class. So it can be concluded that there is a positive influence on the use of Quizizz on science learning with the SESD approach on students' critical thinking skills
Perbedaan Motivasi Kerja Generasi X dan Y di Kantor Pusat PTPN I Langsa
Authors: Khatib Muhammad Al Jabbir , Riamanda Irin , Mirza Mirza , Khatijatusshalihah Khatijatusshalihah
Published: March 2024

Penelitian ini bertujuan untuk menguji perbedaan motivasi kerja generasi X dan generasi Y di Kantor Pusat PTPN I Langsa. Penelitian ini merupakan jenis penelitian komparatif (independent sample t-test) yang diteliti pada 97 sampel karyawan Kantor Pusat PTPN I Langsa. Sampel penelitian dipilih menggunakan metode simple random sampling. Data penelitian dikumpulkan menggunakan skala multidimensional work motivation scale yang disusun oleh Gagne dan Deci. Hasil penelitian menyatakan bahwa hipotesis ditolak, dengan nilai sig 0,657 0,05, yang artinya tidak terdapat perbedaan motivasi kerja generasi X dan generasi Y. Berdasarkan hasil juga diketahui bahwa baik generasi X dan generasi Y memiliki motivasi kerja dengan kategori rendah. Selain itu, hasil penelitian menemukan bahwa generasi X tidak termotivasi terhadap aspek intrinsic motivation dan generasi Y mempunyai nilai kategori sedang cukup tinggi terhadap aspek introjected regulation. Hal ini menggambarkan generasi X tidak bekerja untuk dirinya sendiri serta merasa pekerjaan tidak menarik serta memperoleh kepuasan kepada dirinya. Di sisi lain generasi Y merasa biasa saja apabila berhasil menyelesaikan pekerjaannya serta tidak merasa bersalah apabila gagal menyelesaikan pekerjaan tersebut. Penting bagi perusahaan dan peneliti selanjutnya untuk menggali faktor yang mempengaruhi motivasi kerja karyawan (khususnya Gen X dan gen Y) yang bekerja dengan situasi dan tuntutan kerja yang jauh dari perkotaan. Further study was required to determine how Generation X and Generation Y differ in their motivation for their jobs at the PTPN I Langsa Head Office. Employers at the PTPN I Langsa Head Office include a sample of 97 people who was the subject of this comparative study (independent sample t-test). The research sample was chosen using a straightforward random sampling method. Research data was collected using the multidimensional work motivation scale compiled by Gagne and Deci. The hypothesis of this study was rejected: the value of sig (p) is 0.657 0.05, indicating that there was no significant difference in work motivation between Generation X and Generation Y. Based on the results, it was also known that both generation X and generation Y have low category work motivation. Apart from that, the research results found that generation This illustrates that generation On the other hand, generation Y feels normal if they successfully complete their work and do not feel guilty if they fail to complete the work. It is important for companies and future researchers to explore the factors that influence the work motivation of employees (especially Gen X and Gen Y) who work in work situations and demands that are far from urban areas.
Faktor-Faktor Demografi dalam Keyakinan Konspiratif di Indonesia
Authors: Rikardi Audi Ahmad
Published: March 2024

Keyakinan konspiratif memiliki dampak tertentu baik untuk individu maupun kelompok. Di negara Barat dan Timur, narasi konspiratif muncul dan individu dengan jumlah yang relatif tidak sedikit meyakini narasi konspiratif. Penelitian sebelumnya mengenai keyakinan konspiratif cukup banyak dilakukan di negara Barat, tetapi penelitian di Indonesia masih perlu ditingkatkan jumlahnya sehingga kajian yang lebih banyak menjadi penting. Penelitian ini bertujuan mengetahui peran dari faktor-faktor demografi (usia, jenis kelamin, dan tingkat pendidikan) terhadap keyakinan konspirasi. Penelitian ini melibatkan 385 partisipan (Musia=21,57 tahun). Analisis data untuk menguji hipotesis menggunakan regresi linier berganda. Temuan dalam penelitian ini menghasilkan bahwa (1) faktor demografi secara simultan menjadi prediktor yang signifikan bagi keyakinan konspirasi di Indonesia (R²=4%, p0,05); (2) usia berperan menjelaskan keyakinan konspiratif secara signifikan (B=6.86, SE=3.77, t=3.79, p0,001); (3) jenis kelamin tidak berperan menjelaskan keyakinan konspiratif secara signifikan (B=-0.98, SE=1.63, t=-0.6, p=0,546); (4) tingkat pendidikan tidak berperan dalam menjelaskan keyakinan konspiratif secara signifikan (B=-0,03 ,SE=0,03, t=-1,05, p=0,295). Conspiracy beliefs have specific impacts on both individuals and groups. In Western and Eastern countries, conspiratorial narratives emerge, and numerous individuals believe in conspiracy narratives. Prior research to understand conspiracy beliefs has been conducted in Western countries, but research in Indonesia is still emerging. Thus, more studies are required to understand conspiracy beliefs in the Indonesian context. This study aims to determine the role of demographic factors (age, gender, and education level) on conspiracy beliefs. This study involved 385 participants (age = 21.57 years). Data analysis used multiple linear regression. The findings showed that (1) demographic factors are simultaneously significant predictors of conspiracy beliefs in Indonesia (R²=4%, p0.05); (2) age significantly predicts conspiracy beliefs (B=6.86, SE=3.77, t=3. 79, p0.001); (3) gender does not significantly predicts conspiracy beliefs (B=-0.98, SE=1.63, t=-0.6, p=0.546); (4) education level does not significantly predicts conspiracy beliefs (B=-0.03, SE=0.03, t=-1.05, p=0.295).
Workplace Spirituality to Reduce Burnout in Members of The Regional Police Mobile Brigade
Authors: Humaira Yana , Aprilia Eka Dian
Published: March 2024

Burnout merupakan kondisi yang dirasakan individu yang ditandai dengan kelelahan emosional, depersonalisasi, dan ketidakefektifan dalam bekerja sebagai respon terhadap stres pekerjaan. Workplace spirituality berkaitan dengan konstruk yang menunjukkan peningkatan kualitas kinerja, penemuan makna terhadap pekerjaan dengan membangun hubungan yang erat dengan rekan kerja.  Burnout merupakan kondisi yang diduga dapat tertangani dengan pemenuhan terhadap adanya workplace spirituality. Tujuan dari penelitian ini untuk melihat hubungan antara workplace spirituality dengan burnout pada anggota Brigade Mobil (Brimob) dengan menggunakan pendekatan kuantitatif dengan desain korelasi. Sebanyak 258 anggota Brimob terlibat sebagai sampel penelitian ini yang dipilih dengan menggunakan cluster random sampling. Adapun pengumpulan data penelitian dengan menggunakan dua instrumen, yaitu workplace spirituality dan Maslach Burnout Inventory. Hasil analisa Spearman menunjukkan terdapat hubungan negatif antara workplace spirituality dengan burnout pada anggota Brigade Mobil (Brimob). Burnout is a condition felt by individuals characterised by emotional exhaustion, depersonalisation, and ineffectiveness at work in response to job stress. Workplace spirituality relates to constructs that demonstrate improved quality of performance, finding meaning to work by building close relationships with colleagues. Burnout is a condition that is thought to be manageable with the fulfilment of workplace spirituality. The purpose of this study was to examine the relationship between workplace spirituality and burnout among members of the Mobile Brigade (Brimob) using a quantitative approach with a correlational design. A total of 258 Brimob members, selected using random cluster sampling, were included as samples in this study. The research data were collected using two instruments: workplace spirituality and the Maslach Burnout Inventory. The results of the Spearman analysis showed a negative relationship between workplace spirituality and burnout among members of the Mobile Brigade (Brimob).
Perbedaan Hardiness Mahasiswa Perantau Ditinjau Dari Jenis Kelamin
Authors: Arisandi Evi , Nisa Haiyun
Published: March 2024

Menempuh pendidikan tinggi merupakan impian dan keinginan setiap individu, sehingga individu akan berjuang untuk melanjutkan studi pada bidang yang diinginkan walaupun harus merantau ke daerah lain. Mahasiswa yang merantau ke daerah lain akan mengalami banyak tantangan dan hambatan dalam proses studinya, sehingga diperlukan ketangguhan atau hardiness. Hardiness merupakan salah satu faktor kepribadian yang turut berperan terhadap respon individu dalam menghadapi peristiwa yang berpotensi menimbulkan stres. Penelitian ini bertujuan untuk mengetahui perbedaan hardiness pada mahasiswa perantau ditinjau dari jenis kelamin. Teknik pengambilan sampel yang digunakan adalah quota sampling dengan jumlah 160 mahasiswa perantau yang terdiri dari 80 laki- laki dan 80 perempuan. Instrumen penelitian yang digunakan adalah adaptasi Hardiness Scale yang disusun oleh Bartone (1991). Uji hipotesis yang telah dilakukan menunjukkan hasil (p = 0,46, p 0.05). Berdasarkan hasil tersebut dapat disimpulkan bahwa terdapat perbedaan hardiness antara mahasiswa perantau laki-laki dan perempuan. Higher education is the dreams and desires of each individual, so that individuals will strive for further study on the desired field though should be migrated to other areas. Students who wander into other areas will experience many challenges and obstacles in the process of their studies, so that the necessary toughness or hardiness. Hardiness is one of the factors contributing towards the personality of the individual response in the face of a potentially stressful event. This research aimed to know the difference in hardiness on student nomads in terms of gender. Sampling technique used was quota sampling with a total of 160 students of the nomads that consists of 80 men and 80 women. Research instrument used is the adaptation of the Hardiness Scale compiled by Bartone (1991). Test the hypothesis has been done show results (p = 0.46, p 0.05). Based on these results it can be concluded that there is a difference in hardiness among nomads of both men and women.men and women.
Hubungan Antara Self Esteem dengan Compulsive Buying Pada Remaja
Authors: Rayyani Ida , Mirza Mirza
Published: March 2024

Perkembangan fashion yang silih berganti mendorong remaja melakukan pembelian berulang, ini karena remaja tidak ingin dianggap ketinggalan zaman oleh teman sebayanya, sehingga menjadikan remaja berbelanja pakaian dengan berulang-ulang atau berlebihan. Kegiatan berbelanja tersebut merupakan compulsive buying. Remaja melakukan compulsive buying untuk meningkatkan self esteem pada dirinya dan penerimaan di lingkungannya. Penelitian ini bertujuan melihat hubungan antara self esteem dengan compulsive buying pada remaja. Terdapat 60 subjek pada penelitian ini dengan menggunakan teknik pengambilan sampel yaitu incidental sampling dan snowball sampling. State Self-Esteem Scale dan Edward Compulsive Buying Scale digunakan sebagai alat pengumpulan data. Analisis data menggunakan teknik korelasi Pearson yang menunjukkan nilai koefisien korelasi (r) -0,382 dengan nilai signifikansi (p) = 0,003 (p 0.05) sehingga dapat diartikan bahwa terdapat hubungan yang negatif antara self esteem dengan compulsive buying pada remaja. Hal ini menunjukkan semakin tinggi self esteem maka semakin rendah compulsive buying pada remaja. Successive fashion developments encourage adolescents to make repeat purchases, this cause adolescents to not want to be considered out of date by peers and making adolescents shop for clothes repetitively or excessively. These shopping activities are called compulsive buying. Adolescents do compulsive buying to increase self-esteem in themself and environmental acceptance. This study aims to determine the relationship between self-esteem with compulsive buying in adolescents. 60 subjects were used as the sample of the study that was selected using snowball sampling. The measuring instruments used were the State Self-Esteem Scale and Edward Compulsive Buying Scale. The results of the analysis with Pearson correlation technique showed correlation coefficient (r) -0,382 with significance value (p) = 0,003 (p 0.05) so that it can be interpreted that there is a negative relationship between self-esteem with compulsive buying in adolescent. This shows that higher self-esteem will lead to lower compulsive buying in adolescents.
Hubungan Pola Asuh Orang Tua dengan Perilaku Agresif Pada Remaja di Kota Banda Aceh
Authors: Nasution Dinda Dwi Putri , M. Tatar Farhati
Published: March 2024

Perilaku agresif merupakan suatu perilaku atau kecenderungan perilaku yang niatnya menyakiti orang lain baik secara fisik maupun secara psikologis, dalam hal ini pola asuh orang tua menjadi salah satu faktor yang mempengaruhi perilaku agresif pada remaja. Penelitian ini bertujuan untuk melihat hubungan pola asuh orang tua dengan perilaku agresif pada remaja di Kota Banda Aceh. Penelitian ini menggunakan metode pendekatan kuantitatif dengan teknik pengambilan sampel cluster-random sampling yang berjumlah 339 siswa. Instrumen penelitian yang digunakan adalah adaptasi Parental Authority Questonnaire (PAQ) oleh Buri (1991) dan instrumen adaptasi Aggression Questionnaire (AQ) oleh Buss dan Perry (1992). Analisis data menggunakan teknik analisa data Spearman Correlation yang menunjukkan koefisien korelasi pola asuh demokratis ayah dengan perilaku agresif sebesar r = -0,207 dengan (p 0,05), koefisien korelasi pola asuh demokratis ibu sebesar r = -155 dengan (p 0,05), koefisien korelasi pola asuh otoriter ayah sebesar r = 0,225 dengan (p 0,05), koefisien korelasi pola asuh otoriter ibu sebesar r = 0,253 dengan (p 0,05), koefisien korelasi pola asuh permisif ayah sebesar r = 0,206 dengan (p 0,05) dan koefisien korelasi pola asuh permisif ibu sebesar r = 0, 194 dengan (p 0,05). Hal ini menunjukkan bahwa terdapat hubungan yang signifikan antara pola asuh orang tua dengan perilaku agresif pada remaja di Kota Banda Aceh. Aggressive behavior is a behavior or behavioral tendency of his intention to hurt other people both physically and psychologically, in this parenting parents became one of the factors that influence aggressive behavior adolescents. This research aims to look at the relationship of parenting parents with aggressive behavior in teenagers in the city of Banda Aceh. This research uses a quantitative approach method with cluster sampling techniques-random sampling of 339 students. Research instrument used is an adaptation of the Parental Authority Questonnaire (PAQ) by Buri (1991) and an instrument of Aggression Questionnaire adaptation (AQ) by Buss and Perry (1992). Data analysis data analysis techniques using the Spearman Correlation coefficient which shows the correlation of democratic parenting dad with the aggressive behavior of r =-0.207 with (p 0.05), the coefficient of correlation of democratic parenting mom of r =-155 (p 0.05), the coefficient of correlation of authoritarian parenting father of r = 0.225 with (p 0.05), the coefficient of correlation of authoritarian parenting mom of r = 0.253 with (p 0.05), the coefficient of correlation of permissive parenting father of r = 0.206 with (p 0.05) and correlation coefficients permissive parenting mom of r = 0, with 194 (p 0.05). This shows that there is a significant relationship between parenting parents with aggressive behavior in teenagers in the city of Banda Aceh.
Dinamika Pengambilan Keputusan Etis pada Oditur di Pengadilan Militer Banda Aceh
Authors: Tanjung Zakiatul Hasanah , Sari Kartika
Published: March 2024

Konflik antara hukum dan nilai-nilai etika yang terjadi terkadang dianggap hanyalah masalah pribadi individu, terutama jika konflik tersebut bersinggungan dengan nilai-nilai etika yang dianut individu tersebut dan standar kode etik tidak menjelaskan dengan baik keadaan tersebut. Pada saat konflik tersebut muncul, individu harus terlibat dalam proses pengambilan keputusan yang etis (ethical decision making) untuk mengevaluasi alternatif dari pemecahan masalah yang mungkin dipilih dan menentukan pilihan yang terbaik. Penelitian ini bertujuan untuk mengetahui bagaimana dinamika pengambilan keputusan etis pada Oditur di Pengadilan Militer Banda Aceh. Penelitian ini menggunakan metode kualitatif dengan pendekatan studi kasus. Prosedur pengambilan responden menggunakan teknik purposive sampling dengan jumlah responden dua orang. Data penelitian dikumpulkan melalui wawancara dan observasi. Hasil penelitian menunjukkan bahwa pengambilan keputusan yang dilakukan oleh kedua responden dalam mengambil keputusan untuk menuntut lamanya hukuman yang akan diberikan kepada terdakwa telah melalui enam langkah-langkah yang sama yaitu mengidentifikasi masalah, mempertimbangkan makna dari keadaan dan peraturan, mengindentifikasi dan menggunakan sumber-sumber etika dan hukum, mempertimbangkan keyakinan dan nilai-nilai pribadi, mengembangkan solusi yang dapat menyelesaikan masalah dan menetapkan serta memilih waktu bertindak. Penelitian ini juga menemukan adanya dilema dan konflik batin didalam pengambilan keputusan serta faktor emosi dan asal suku yang sama memengaruhi pengambilan dalam menuntut. Conflict between the law and ethical values that occur is sometimes considered just a personal problem of individuals, especially if the conflict intersects with the ethical values embraced by the individual and ethical standards did not explain well the situation. When conflict arises, the individual must engage in an ethical decision making process to evaluate alternatives of solving problems that may have and determine the best option. This study aims to determine the dynamics of decision-making at the Military Court Prosecutor in Banda Aceh. This study used a qualitative method with case study approach. Making procedures of respondents using purposive sampling with the number of two respondents. Data were collected through interviews and observations. The results showed that the decision made by the two respondents in the decision to prosecute the length of the punishment that will be given to the accused have been through the same six steps that identify the problem, consider the significance of the context and setting, identify and use ethical and legal resources, consider personal beliefs and values, develop possible solutions to the problem, choose and implement a course of action and assess the outcome. The study also found their dilemmas and inner conflicts in decision-making as well as emotional factors and the same ethnic origin in a decision affecting prosecution
Tingkat Kecemasan Berbicara Di Depan Umum Pada Mahasiswa
Authors: Nurhasanah Dini , Mukhyi Talitha Fatiyah , Wirda Raudhatul , Nadhira Munifa , Tsabitah Ghina , Salsabila Andra , Amna Zaujatul
Published: March 2024

Kecemasan bebicara di depan umum merupakan masalah psikologis yang sering dialami mahasiswa pada tahun pertama karena merupakan masa peralihan dari lingkungan sekolah ke perguruan tinggi. Hal ini menjadi tantangan tersendiri yang dihadapi baik mahasiswa laki-laki maupun perempuan saat dihadapkan pada tugas untuk berbicara di depan umum. Penelitian ini bertujuan untuk mengetahui perbedaan kecemasan berbicara di depan umum pada mahasiswa laki-lai dan perempuan. Sebanyak 120 mahasiswa baru yang terdiri dari 60 mahasiswa laki-laki dan 60 mahasiswa perempuan terlibat sebagai sampel penelitian ini yang dipilih menggunakan non-probability dengan teknik convinience sampling. Intrumen Personal Report Public Speaking Anxiety Scale (PRPSA) menjadi alat pengumpulan data penelitian yang bersifat unidimensi dengan jumlah item sebanyak 34 (α = 0.84). Hasil analisis penelitian menunjukkan bahwa terdapat perbedaan tingkat kecemasan berbicara di depan umum pada mahasiswa laki-laki dan perempuan di Banda Aceh. Data menunjukkan secara signifikan mahasiswa perempuan memiliki tingkat kecemasan yang lebih tinggi dibandingkan dengan mahasisiswa laki-laki. Di sisi lain, hasil penelitian juga menunjukkan bahwa tingkat kecemasan berbicara di depan umum juga lebih tinggi pada mahasiswa dengan rentang usia remaja dibandingkan dengan usia dewasa awal. Public speaking anxiety is a psychological problem that students often experience in their first year because it is a transition period from school to college. This is a challenge faced by both male and female students when faced with the task of speaking in public. This study aims to determine the differences in public speaking anxiety in male and female students. A total of 120 new students consisting of 60 male students and 60 female students were involved as samples for this research who were selected using non-probability with convenience sampling techniques. The Personal Report Public Speaking Anxiety Scale (PRPSA) instrument is a unidimensional research data collection tool with a total of 34 items (α = 0.84). The results of the research analysis show that there are differences in the level of public speaking anxiety among male and female students in Banda Aceh. Data shows that female students have significantly higher levels of anxiety compared to male students. On the other hand, the research results also show that the level of public speaking anxiety is also higher among students in the teenage age range compared to early adulthood.
Kesepian Dan Cyberloafing Pada Tenaga Perpustakaan Universitas Di Banda Aceh
Authors: Sabrina Nazhira , Rachmatan Risana
Published: March 2024

Cyberloafing merupakan segala bentuk perilaku karyawan yang menggunakan akses internet instansi untuk tujuan pribadi saat jam kantor. Terdapat banyak faktor yang mempengaruhi hadirnya cyberloafing. Kesepian adalah salah satu faktor internal individu yang dapat menyebabkan munculnya perilaku tersebut. Penelitian ini bertujuan untuk mengetahui hubungan antara kesepian dengan cyberloafing pada tenaga perpustakaan di Universitas. Penelitian ini menggunakan pendekatan kuantitatif dengan metode nonprobability sampling melalui teknik Purposive Sampling dengan total keseluruhan sampel adalah 113 tenaga perpustakaan. Pengumpulan data dalam penelitian ini menggunakan alat ukur skala Cyberloafing untuk mengukur perilaku cyberloafing dan Loneliness at Work Scale untuk mengukur kesepian. Data pada penelitian ini tidak terdistribusi secara normal sehingga analisis data dalam penelitian ini menggunakan analisis korelasi Spearman Brown Formula dengan nilai (r=0,420 dan p=0,000) yang menunjukkan adanya hubungan positif antara kesepian dengan cyberloafing pada tenaga perpustakaan di Universitas. Hal ini berarti semakin tinggi kesepian maka semakin cenderung pula cyberloafing pada tenaga perpustakaan di Universitas. Cyberloafing is any behavior of employees who use their company's internet access for personal purposes during work time. There are many factors that influence the presence of cyberloafing. Loneliness is one of the individual internal factors that can cause the emergence of cyberloafing. This study aimed to determine the relationship between loneliness and cyberloafing among library staff at the University. This research uses a quantitative approach with a nonprobability sampling method through a purposive sampling technique with a total sample of 113 library personnel. Data collection in this study uses a Cyberloafing scale to measure cyberloafing behavior and a Loneliness at Work Scale to measure loneliness. The data in this study were not normally distributed so the data analysis used Spearman-Brown Formula correlation analysis with values (r = 0.420 and p = 0,000) which showed a positive relationship between loneliness and cyberloafing on library staff in the University. This means that the higher the loneliness, the more likely cyberloafing on library staff at the University.
Adsorbation of Carbon Monoxide Gas With Activated Carbon From Rubber Fruit Shells
Authors: Sasmita Aryo , Edward Edward , Syahbana Rudea Faddhisrah
Published: March 2024

Carbon Monoxide (CO) emitted by motorized vehicles can have a negative impact on human health. One way to absorb CO gas is with adsorption technology using activated carbon. Activated carbon has the potential to be used as an adsorbent. This research aims to study the efficiency of CO gas absorption in motorbike emissions using activated carbon from rubber fruit shells. Activated carbon was prepared by carbonization process at 500oC for 1 hour using 10% H3PO4 activator and sieving with a sieve size of 200 mesh. The operating conditions of the adsorption process that were varied were the length of the adsorbent, namely 3; 4; and 5 cm. The activated carbon product is then tested using proximate analysis. The results of proximate analysis show that activated carbon meets SNI 06-3730-1995 with a water content value of 7.6%; ash content 8.7%; volatile matter 8.2%; and fixed carbon 75.5%. The research results showed that the highest removal of CO gas emissions on motorbikes occurred at a contact time of 1 minute of 80.809% with a media thickness of 5 cm. The best adsorption capacity value occurred at a contact time of 1 minute, with an activated carbon media length of 3 cm, namely 158.635 mg/g.
Effectivity Of Multi Tray Aerator As Pretreatment Process For Reverse Osmosis Membrane To Utilized As Raw Water At Sungai Itik Village
Authors: Septiansyah Edo , Purnaini Rizki , Danial Mochammad Meddy
Published: March 2024

The community in Sungai Itik Village and its vicinity use river water for their daily needs, such as irrigation for agriculture, fish ponds, washing, bathing, and more. The quality of the river water has an iron (Fe) content of 2,64 mg/L, Total Dissolved Oxygen (TDS) of 347 mg/L, Dissolved Oxygen (DO) of 4,7 mg/L, a temperature of 29°C, and a pH of 5,4. The iron (Fe) content exceeds the standards set by PerMenKes No. 32 of 2017, requiring treatment using a multiple-tray aerator. This study aimed to determine the effective distance and number of trays in treating Sungai Itik's raw water, understand the coefficient of gas transfer (KLa) in the aeration process, and find the optimum aeration time. This study employed a multiple-tray aerator consisting of 5 trays with variations in the tray distances at 30 cm, 40 cm, 50 cm, and 60 cm. Three repetitions were performed for each treatment, both without gravel and with gravel. The results of this study showed that the best reduction in Fe content was achieved by the treatment with gravel at a tray distance of 60 cm using 5 trays, resulting in a 6,64% reduction in Fe from an average value of 1,51 mg/L to 1,41 mg/L. The average pH value was 6,19, and the TDS was 890 mg/L. The highest oxygen transfer rate (KLa) was obtained at a tray distance of 60 cm with gravel, averaging 0,2857/minute, and the optimum aeration time was 10 minutes.
IoT Platform for Monitoring Systems Water pH in the Freshwater Fish Cultivation Process
Authors: Kurnia Deni , Riyadi Slamet , Dewi Deshinta Arrova , Suprianto Adolf Asih , Rahmadani Olivia
Published: March 2024

This study describes the implementation of the Internet of Things using the MQTT protocol and mosquitto as a broker combined with a 2x16 LCD for a pH monitoring system in a freshwater fish farming system at BPBIAT Purwakarta, West Java, Indonesia. To obtain accurate data, the calibration process is carried out in several stages, including using buffer 6.8 and distilled water. The calibration results on the 6.8 buffered liquid sample mean that the data obtained are appropriate, while the aquades obtained a value of 7.73, this is due to the storage factor of the distilled water so that it can change the pH value. The final result of the research shows that the data that appears online on the Node-Red dashboard is the same as that which appears locally on the 2x16 LCD. This means the MQTT protocol is working fine. The data displayed on the Node-Red UI is sent periodically every 30 minutes. The consideration is that, during the experiments, the pH value of the water did not change significantly beyond the range of 6.5-8.5. This data illustrates that the pH quality of the water for freshwater fish farming at BPBIAT is ideal for use.
Utilization of Sengon Wood Ash for Soil Stabilization and Its Impact on Unsoaked CBR Value
Authors: Fathonah Woelandari , Mina Enden , Kusuma Rama Indera , Ramdani Fahreza
Published: March 2024

Soil is one of the critical factors influencing construction robustness. The land situated in Cibingbin Village, Cibaliung District, Pandeglang Regency, falls under the category of soil with low bearing capacity. Therefore, the soil in this area requires stabilization to enhance its load-bearing capacity. The field's CBR value, determined through DCP testing, was found to be 2.67%. The target CBR value for subgrade suitability is 6%, indicating the necessity for soil stabilization at this location. This study aims to assess the physical characteristics of the native soil and its CBR value after stabilization using sengon wood ash. Various percentages of sengon wood ash, namely 4%, 6%, 8%, 10%, and 12%, were utilized with curing periods of 0 and 3 days. Soil classification was performed using the USCS method, and the CBR test conducted was the unsoaked CBR test. The results revealed that the addition of 4% sengon wood ash, with a 3-day curing period, yielded an optimum CBR value of 7%. Sengon wood waste ash proved effective in increasing the CBR value. Furthermore, the use of sengon wood ash did not significantly reduce the plasticity index (PI) value. After stabilization with sengon wood ash, the PI value remained at 35.685%, categorizing it as highly plastic. Additional research is recommended to address the limitations of sengon wood ash and achieve a significant reduction in the PI value to meet the subgrade criteria
The Influence of Job Stress and Psychosocial Factors on Employee Performance through Leadership Quality
Authors: Afifah Zumrotin Nur , Kurniasih Dewi , Rachman Farizi
Published: March 2024

The development of Indonesia's industry is currently changing from commodity-based to manufacture-based. The manufacturing industry cannot be separated from the role of the packaging industry. So it is necessary to have Human Resources with good performance to be able to help achieve the goals and vision and mission of the company. Employee performance comes from two factors, namely individual factors and organizational environmental factors. The purpose of this study was to determine the effect of work stress and psychosocial factors consisting of job demands and work organization on employee performance in packaging companies through leadership quality. The method used is PLS-SEM with a sample of 75 people. The results showed that work stress had a significant effect on employee performance (p-value = 0.000), job demands and work organization had no significant effect on employee performance (p-value = 0.501 on job demands and p-value = 0.658 on work organization) , leadership quality has no significant effect on employee performance (p-value = 0.685), work stress has no significant effect on employee performance through leadership quality (p-value = 0.740), and job demands and work organization have no significant effect on employee performance through quality leadership (p-value=0.877 on job demands and p-value=0.725 on work organization). While the r-square value which shows the influence of work stress variables, job demands, work organization, and leadership quality on employee performance is 63.7%.
Implementation of Reliability Centered Maintenance (RCM) with Fuzzy Logic in Eliminating Off-Hangar Maintenance on Narrow Body Aircraft
Authors: Juniawan Singgih , Jaqin Choesnul , Prabowo Herry Agung , Roysen Uti , Alam Fachrul , Daruki Daruki
Published: March 2024

Aircraft maintenance in remote locations is a prevalent challenge for local airlines in Indonesia, leading to diminished productivity and efficiency in the maintenance division. This issue is substantiated by a significant incidence rate of 36% annually, as reported by a national airline. The current solution needed is the improvement of the Maintenance System to eliminate off-hangar maintenance for Narrow Body aircraft in the national aviation service industry. This study aims to identify the causal factors of aircraft requiring maintenance when located outside the primary maintenance facilities and to reduce these occurrences. The Reliability Centered Maintenance (RCM) method is employed to determine the most effective maintenance approach based on system and equipment reliability, and the fuzzy logic method in FMEA is utilized to address ambiguity and uncertainty in risk assessment. Primary data were obtained from Focus Group Discussions (FGD) with experts working in the airline industry. Secondary data were collected from all aircraft experiencing breakdowns outside the main hangar. The findings reveal that the primary factor for maintenance outside the main facilities is the current maintenance policy of Finding Failure (FF), which leads to unpredictable maintenance activities, resulting in damage outside the main facility areas (Batam, Cengkareng, and Surabaya). Incidents of maintenance outside the main facilities can be eliminated by shifting the policy to Time Directed (TD), enabling the company to reduce costs from an initial IDR 342,681,011,118.60 to IDR 70,370,514,198.60, achieving a cost saving of 79.47%.
Design of A Portable Solid-Fuel Rocket Stove
Authors: Aljufri Aljufri , Putra Reza , Rahman Abdul , Mardian Rikki
Published: March 2024

The depletion of fossil fuels is a hot topic of discussion these days. This is due to the increasing use of fossil fuels in human life. In terms of the increase in fuel and gas prices, we realise that the energy consumption that is increasing from year to year is not balanced with the availability of energy sources, which affects households that use fuel in the cooking process. So a design was carried out to make an ergonomic solid fuel stove with the aim of not using fuel anymore in the cooking process, in this design, the stove is designed to be more flexible and get a portable biomass rocket stove design by considering social aspects, performance, local resources, economy, environmentally friendly. Biomass fuels are solids, liquids or gases produced from organic matter.. Biomass fuels used in solid fuel stoves such as firewood, charcoal, briquettes and pellets. Each biomass fuel has different properties and characteristics. The designed portable rocket stove consists of several main parts namely combustion chamber, chimney, air duct, pan spot and cassing, using stainless steel material. The test results include combustion chamber and water temperature during the process, thermal efficiency, combustion rate and specific fuel consumption under cold start and hot start conditions. After hot start, it is found that the use of a chimney on a portable stove designed using coconut shell fuel is more effective than without a chimney. Shorter boiling time of 1 minute, greater combustion rate of 0.13 grams/minute, higher thermal efficiency of 2% and lower specific fuel consumption of 9.11 grams/litre of water when the stove uses a chimney.
Design of a Passenger Ship Launch Using an Air Bag System
Authors: Abdullah Kharis , Sarena Sryang T.
Published: March 2024

Ship launching is one of the stages of ship production before the ship is handed over to the owner, which marks the beginning of the ship's life. With the development of technology at this time, various launching methods have been developed, one of which is the launching method using an air bag system. Launching using air bags has many advantages compared to conventional launching methods that have been used so far. Pre-launch calculations are performed to avoid risks during the launch. Launching using air bags begins with calculating the weight plan of the ship launch and the preparation of the air bag layout. Using CB/T 3837:1998 Technological Requirements for Ship Upgrading or Launching Relying on Air Bags, Shipbuilding Industry Standard, and ISO 14409:2011 ships and marine technology-ship launching air bags, the number of air bag requirements and layout can be determined to support the ship launching process. The passenger ship, with an length overall of 62.80 metres, is planned to have a launch weight of 1058.881 tons. By using the QG6 high-bearing capacity air bag model with 6 layers of cord fabric with a diametre of one metre and a contact length between the air bag and the ship's body of ten metres, a total of 11 air bags are required in a linear arrangement to support the launch of a passenger ship. The distance between air bags is 2.07 metres to 5.736 metres, the longer the distance between air bags, the greater the load supported by each air bag.
Prediction of Onset Temperature in Standing Wave Thermoacoustic Engine with Mesh Screen Stack
Authors: Murti Prastowo , Astuti Wijayanti Dwi , Setiawan Ikhsan , Irsyadi Fakih , Hudati Imroatul
Published: March 2024

A thermoacoustic engine is a engine that converts thermal energy into acoustic energy, which can be used to generate electricity or cooling. This engine is attractive because it consists only of a stack, heat exchangers, and a resonator. The stack serves as the primary component for the energy conversion process and consists of porous materials like an array of stainless steel mesh screens. To generate the acoustic energy, a minimum temperature difference is necessary between the two sides of the stack, called the onset temperature difference. However, the calculation for prediction of onset temperature on the stack made of mesh screen has not been addressed. Therefore, the objective of this paper is to propose a method that can be used to estimate the onset temperature difference in standing wave thermoacoustic engine with stacks made of mesh screen arrays. The onset temperature difference is predicted numerically using linear stability theory and matrix transfer methods. Experimental verification is carried out by using standing wave thermoacoustic engine from pervious study. The results showed that the lowest onset temperature difference (TH - TC = 140ºC) is obtained when rh = 0.497 mm. Furthermore, the numerical and experimental onset temperature difference comparisons show a qualitative agreement, allowing the onset temperature prediction method to be used in designing standing wave thermoacoustic engines with stacks made of mesh screens.
The Effect Of Pitch Ratio On Screw Turbine Performance With Tip Fin
Authors: Adiwidodo Satworo , Ahmad Masrur Maulana
Published: March 2024

A water turbine is an energy conversion machine that converts water head into shaft movement. In screw-type turbines, performance is influenced by several parameters including outer diameter, inner diameter, rotor length, head angle, number of blades, and pitch distance. This research uses a screw turbine type with a tip fin. The research aims to determine the performance of screw turbines with tip fins on mechanical power and efficiency. The research independent variables consist of pitch ratio and flow rate. The pitch ratio variations used are 1.2; 1.4 and 1.6 while the variations in flow rate used are 3 l/s, 3.5 l/s, and 4 l/s. The method used in this research is experimental. This study's data analysis employed the two-way Anova method with an alpha (α) of 5%. Anova's results show that the P-value of the interaction of the two independent variables, pitch ratio and water discharge, is <0.05, meaning that the independent variables have a significant influence on the performance of the screw turbine. The highest turbine performance results were at a pitch ratio of 1.4 at a water flow rate of 4 l/s resulting in an efficiency value of 34.91% and a mechanical power value of 6.82 watts at a rotational speed of 125 RPM. The lowest turbine performance results at a pitch ratio of 1.2 with a flow rate of 3 l/s resulting in an efficiency of 22.64% and a mechanical power of 3.32 watts at a rotational speed of 56 RPM.
Analysis of Proposed Waste Management Strategies at XYZ Islamic Boarding School Using SWOT and Promethee
Authors: Wesha Defi Milenia Putri , Rimantho Dino
Published: March 2024

As a country with a population of 261,115,456 people, Indonesia produces 65 million tons of waste per year. This large amount of waste is not matched by good waste management. Improving waste management must be done from the source, one of which is the XYZ boarding school.  Thus, this study aims to determine the waste management strategy to improve waste management at the XYZ Islamic Boarding School. The determination of the process was carried out using the SWOT and Promethee methods. Based on the SWOT analysis results, alternative waste management strategies that can be implemented at the XYZ Islamic Boarding School are known. Furthermore, these alternatives are analyzed again to determine which options will be prioritized using the Promethee method. The results show that XYZ Islamic Boarding School can implement the SO strategy with a value of 4,830, and the priority strategies are conducting waste management training by trainers or teachers to employees of the boarding school, building waste management facilities in the boarding school area, and building good cooperation with waste management institutions.
The Influence of Work Posture and Work Environment on Sick Building Syndrome in Port Service Company Employees
Authors: Kinanti Juwitaning Sekar , Kurniasih Dewi , Rachmat Aulia Nadia
Published: March 2024

Sick Building Syndrome is a combination of health problems that a human feels only when doing activities inside a building. This situation is due to various factors, such as ergonomic factors and a work environment that is not in accordance with applicable regulations. The office building of the Port Service Company has poor building conditions, such as a poor ventilation system, some work facilities that are not ergonomic, and the physical environment of lighting and work climate that is not up to standard. This study was conducted to determine the general description of the incidence of SBS in the office building of the Port Services Company and to determine the effect of work posture and work environment on SBS complaints. The statistical method used in this study is binary logistic regression test. The results of statistical testing showed that work posture (p-value=0.018) and lighting (p-value=0.027) had an effect on sick building syndrome.
Risk factors of delayed presentation to the emergency department among stroke patients: a systematic review
Authors: Almadhi Khalid , Al-Neimat Khalil , Alshaeri Hanan , Almotairi Shrooq , Alsharari Awad , Amid Alkhaldi , Alanizi Shatha , Alrasheed Muath , Alhamal Zainab
Published: March 2024

Acute stroke care pathways are complex and influenced by various factors at different stages. This systematic review aims to provide a comprehensive analysis of existing literature, exploring factors influencing acute stroke pathways and elucidating their interrelations. A systematic search of PubMed, Embase, and Cochrane Library was conducted, identifying 29 reviews published in English. Inclusion criteria focused on studies related to acute stroke pathways, considering factors at pre-hospital and in-hospital stages. Quality assessment and data extraction were performed, categorizing factors into patient, space, organizational/logistical, and training. Associations between factors were analyzed, both between and within categories. The review identified diverse factors influencing acute stroke pathways. Patient factors, such as stroke knowledge and bystander presence, were consistently cited. Space-related factors included the impact of distance on delays. Organizational/logistical aspects, including pre-notification and CT scan availability, played crucial roles. Training factors, especially stroke recognition, significantly influenced pre-hospital stages. Associations were observed both between and within categories, revealing intricate dynamics. The study concludes that acute stroke delays are multifactorial, involving patient, space, organizational/logistical, and training aspects. The findings emphasize the need for a systemic approach, considering the dynamic interplay of these factors. Multi-factorial interventions, as demonstrated in some studies, show promise in addressing barriers across the stroke pathway. Understanding contextual influences is crucial for effective acute stroke care planning. Further research should explore less-studied factors, contributing to a more nuanced understanding of acute stroke care complexities.