bluuebunny/crossref_metadata_2025 huggingface dataset:
KARAKTERISTIS DAN LAJU PEMBAKARAN BRIKET ARANG TEMPURUNG KELAPA DENGAN PENAMBAHAN AROMATERAPI AKAR WANGI (Vetiveria zizanoides) DAN GAHARU (Aquilaria malaccensis)
Authors: Mahdie Muhammad Faisal , Rahmadi Adi , Indrayatie Eko Rini , Sari Noor Mirad , Arsya Hanifa
Published: April 2023

Limbah dari buah kelapa adalah tempurung kelapa yang umumnya digunakan sebagai bahan bakar sehari – hari. Serbuk akar wangi dan limbah serbuk kayu gaharu mengandung resin yang selama ini belum dimanfaatkan secara maksimal menjadi solusi dalam penyediaan bahan aromaterapi karena mengandung aroma yang menenangkan dan menghilangkan stress. Tujuan dari penelitian adalah (1) Menganalisis Uji Karakteristik briket arang aromaterapi tempurung kelapa dengan penambahan serbuk akar wangi dan serbuk kayu gaharu yang meliputi kerapatan, uji kadar air, kadar abu, kadar zat terbang, kadar karbon terikat, nilai kalor dan laju pembakaran (2) Mengetahui perlakuan terbaik dari briket arang aromaterapi tempurung kelapa dengan penambahan serbuk akar wangi dan limbah serbuk kayu gaharu.  Pengujian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 6 perlakuan dan 3 kali ulangan, jadi jumlah seluruh sampel sebanyak 18 buah. Kadar air tertinggi sebesar 8,55% terdapat pada perlakuan E dan terendah terdapat pada perlakuan C yaitu 4,05%, kadar abu briket aromaterapi bervariasi yaitu nilai terendah  6,19% pada perlakuan E dan tertinggi 11,46% pada perlakuan A. Nilai rata-rata zat terbang tertinggi 60,29% terdapat pada perlakuan E dan kadar zat terbang terendah 42,83% terdapat pada perlakuan F. Kadar karbon terikat tertinggi terdapat pada perlakuan F yaitu 43,66% dan rata-rata terendah terdapat pada perlakuan E yaitu 24,97%. Nilai kalor bervariasi antara 4885,21 kal/gr - 5516,24 kal/gr, kadar karbon terendah terdapat pada perlakuan E dan perlakuan F memiliki nilai kalor tertinggi. Rata-rata kerapatan briket arang aromaterapi tertinggi sebesar 0,8546 gr/cm3 terdapat pada perlakuan F dan perlakuan E memiliki rata-rata kerapatan terendah yaitu 0,5740 gr/cm3 . Laju pembakaran terendah terdapat pada perlakuan D yaitu 0,39 gr/menit dan tertinggi terdapat pada perlakuan E yaitu 0,63 gr/menit. Kadar air terbaik terdapat pada perlakuan C yaitu 4,05% (SNI < 8%), kadar abu terbaik terdapat pada perlakuan E yaitu 6,19% (SNI < 8%), semua perlakuan untuk zat terbang belum memenuhi standar (SNI < 15%), pengujian karbon terikat dan kerapatan tidak mensyaratkan standar SNI,  nilai karbon terbaik pada perlakuan F yaitu 5516,24 kal/gr (SNI > 5000 kal/gr).
KERAGAMAN JENIS SATWA BURUNG PADA VEGETASI MANGROVE DI DESA TAAR KECAMATAN DULLAH SELATAN KOTA TUAL
Authors: Audryvca Sapulette Sophia Sylvana , Pattinasarany Cornelis Katje , Soselisa Fanny
Published: April 2023

Desa Taar terletak di kecamatan Dullah Selatan Kota Tual, yang memiliki daya tarik akan kawasan mangrove yang cukup luas sehingga merupakan habitat yang baik bagi beberapa jenis burung. Desa Taar memiliki beberapa jenis burung yang ditemukan antara lain: Cikukua seram  (Philemon moluccensis), Gajahan Timur (Numenius madagascariensis), Kowak Malam Merah (Nycticorax caledonicus), Nuri Maluku (Eos bornea), Pergam Tarut (Ducula concina) dan beberapa jenis lainnya. Penelitian ini bertujuan untuk mengetahui keragaman jenis satwa burung pada vegetasi mangrove dan untuk mengetahui pengaruh kerapatan vegetasi mangrove terhadap keragaman jenis satwa burung di desa Taar. Metode pengamatan satwa burung yang digunakan adalah metode Line Transek dan pengamatan vegetasi dilakukan berdasarkan metode Analisis Garis Berpetak pada jalur – jalur pengamatan yang sudah ditentukan. Keragaman satwa burung yang ditemukan di desa Taar pada jalur 1 sampai dengan jalur 10 sebanyak 14 jenis. Pada jalur 1 nilai H’ = 2,02 dengan jumlah jenis 9 satwa burung; jalur 2 H’ = 2,31 jumlah jenis 11 satwa burung; jalur 3 H’ = 2,07 jumlah jenis 10 satwa burung; jalur 4 H’ = 1,83 jumlah jenis 8 satwa burung; jalur 5 H’ = 2,13 jumlah jenis 10 satwa burung; jalur 6 H’ = 2,14 jumlah jenis 11 satwa burung; jalur 7 H’ = 2,20 jumlah jenis 12 satwa burung; jalur 8 H’ = 2,27 jumlah jenis 11 satwa burung; jalur 9 H’ = 2,36 jumlah jenis 12 satwa burung; jalur 10 H’ = 2,25 jumlah jenis 10 satwa burung. hasil analisa regresi menunjukkan tidak ada pengaruh nyata antara variabel kerapatan terhadap keragaman jenis satwa burung.
PERBANDINGAN PENGUKURAN KERAPATAN KANOPI DARI HEMISPHERICAL PHOTOGRAPHY DAN UAV UNTUK PEMETAAN MENGGUNAKAN CITRA SENTINEL-2
Authors: Fariz Trida Ridho , Ihsan Haikal Muhammad , Lutfiananda Fathia , Sartohadi Junun , Darmajati Yoga , Syahputra Andi
Published: April 2023

Tujuan dari penelitian ini adalah melakukan pemetaan kerapatan kanopi vegetasi tegak di Sub DAS Bompon, dimana penggunaan lahan vegetasinya berupa kebun campuran dan hutan rakyat sehingga vegetasi tegak pada wilayah ini adalah sangat heterogen. Penelitian ini menggunakan beberapa indeks vegetasi dari citra satelit Sentinel-2 juga membandingkan metode pengukuran kerapatan kanopi dari hemispherical photography (pemotretan keatas) dan UAV (pemotretan kebawah). Tahapan penelitian meliputi pra-pengolahan citra Sentinel-2 dan membangun transformasi indeks vegetasi yaitu RVI, NDVI, SAVI, ARVI dan EVI. Dilanjutkan dengan pengumpulan data kerapatan kanopi, analisis regresi linier dan membangun peta kerapatan kanopi dari persamaan regresi linier antara indeks vegetasi dengan nilai kerapatan kanopi. Hasil penelitian menunjukkan bahwa NDVI merupaka indeks vegetasi terbaik untuk pemetaan kerapatan kanopi di Sub DAS Bompon. Hal ini dikarenakan indeks tersebut memiliki korelasi terbaik dan RMSE terendah setelah dijadikan peta kerapatan kanopi dari data UAV.
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS ANDROID MATERI POLA BILANGAN TINGKAT SMP KELAS VIII
Authors: Yahya Helmi , Fajriah Noor , Mawaddah Siti
Published: April 2023

Media pembelajaran mempunyai peran untuk menyampaikan informasi kepada siswa agar dapat merangsang pikiran siswa dalam memahami materi. Namun, masih terdapat siswa yang kurang dalam memahami materi. Salah satu materi matematika yang kurang dipahami oleh siswa adalah pola bilangan. Salah satu upaya yang dapat digunakan untuk mengatasi masalah tersebut adalah dengan menggunakan media pembelajaran berbasis android. Tujuan dari penelitian pengembangan ini adalah mendeskripsikan proses dan hasil dari media pembelajaran berbasis android pada materi pola bilangan tingkat SMP kelas VIII yang valid. Model pengembangan pada penelitian ini adalah model pengembangan ADDIE (Analysis, Design, Development, Implementation, dan Evaluation) yang dilakukan hanya sampai pada tahap Development. Instrumen dalam penelitian yang digunakan berupa lembar validasi. Hasil penelitian pengembangan menunjukkan bahwa media pembelajaran yang divalidasi oleh validator ahli mendapatkan skor rata-rata keseluruhan aspek 3,16 yang termasuk pada kriteria valid. Berdasarkan kriteria kevalidan, maka media pembelajaran berbasis android materi pola bilangan ini memenuhi kriteria valid.
PENGEMBANGAN E-LKPD MENGGUNAKAN LIVEWORKSHEETS PADA MATERI ARITMETIKA SOSIAL DENGAN KONTEKS LINGKUNGAN LAHAN BASAH UNTUK SISWA KELAS VII
Authors: Rahman Syahri , Zulkarnain Iskandar , Kamaliyah Kamaliyah
Published: April 2023

Pandemi Covid-19 membuat proses pembelajaran yang diterapkan di Indonesia sekarang berbeda dari tahun-tahun sebelumnya, di mana pembelajaran sebelumnya dilakukan secara langsung di sekolah berubah menjadi pembelajaran jarak jauh dari rumah dengan pengawasan dari orang tua. Tentunya hal tersebut mengharuskan pendidik memiliki alternatif dalam proses pembelajaran salah satunya dengan memanfaatkan E-LKPD. Tujuan penelitian ini adalah mengembangkan E-LKPD menggunakan liveworksheets pada materi aritmetika sosial dengan konteks lingkungan lahan basah untuk siswa kelas VII. E-LKPD yang dikembangkan terkait makanan, flora, fauna, barang, alat transportasi, dan tempat wisata di Kalimantan Selatan. Metode yang dipakai adalah metode penelitian pengembangan (Research and Development) dengan model pengembangan 4-D dengan kriteria valid dan praktis. Tahapan yang dilakukan dalam penelitian ini adalah tahap define, design, dan develop. Instrumen yang digunakan pada penelitian ini adalah lembar validasi dan lembar praktikalitas. Untuk mengetahui terpenuhi atau tidak kriteria valid dan praktis E-LKPD, dilakukan validasi dan uji coba. Validasi dilakukan oleh dua orang ahli dengan skor validasi 3,595, sedangkan hasil angket respon guru dan peserta didik masing-masing sebesar 100% dan 84,30%. Hal ini menunjukan E-LKPD masuk kriteria valid dan praktis.
Energy consumption analysis of DSR reactive routing protocol on mobile ad-hoc network
Authors: Nurfitriana Tyas , Amri Ginting Jafaruddin Gusti , Nugroho Kukuh
Published: April 2023

Mobile ad-hoc network is a connection between mobile devices that uses wireless media. Mobile devices on the network hereinafter referred to a nodes. This network does not have an administrative center so each node on the network in addition to functioning as a sender and receiver of data information also functions as a router that will look for route information from the sender to the receiver. The topology of an ad-hoc network is always changing because the nodes move dynamically. The topology changes resulted in the repetition of route information searches. The process of finding route information requires a routing protocol. The routing protocol-enabled nodes must maintain the energy usage in the route-finding mechanism. Choosing the right routing protocol can be a solution to make energy use by nodes more efficient, especially in ad-hoc networks. In this study, a routing protocol in the reactive category is used, namely DSR (Dynamic Source Routing). This study aims to determine the performance of energy consumption, remaining energy, and PDR with scenarios of increasing node movement speed and network area. Based on the research results, it is known that the DSR routing protocol can handle changes in the speed of node movement and network area related to energy consumption and remaining energy. This is evidenced by the results of research showing that with faster node movements and wider areas, less energy is required. Meanwhile, regarding the success of packet delivery, the DSR routing protocol cannot handle changes in the speed of node movement and network area. This is evidenced by the results of the packet delivery ratio measurement which shows that with faster node movements and wider areas, many packets are not successfully received.
The combination of color-texture features and machine learning for detecting Dayak beads
Authors: Septiarini Anindita , Hamdani Hamdani , Winarno Edy
Published: April 2023

Dayak is one of the tribes in East Kalimantan, Indonesia, which has a lot of cultural wealth. Beads craft is one of the Dayak traditional cultures made using various materials with distinctive motifs. The Dayak beads have many different motifs and color combinations. Hence not everyone can distinguish between the bead motif of Dayak and non-Dayak easily. This study aims to develop a bead detection method to differentiate between the bead types of Dayak and non-Dayak. The main processes required include preprocessing, feature extraction, and classification. The features were extracted based on color and texture. Experiments were carried out using several machine learning approaches. The highest results were achieved using the combination of color and texture features with the implementation of K-Nearest Neighbor (KNN) methods as indicated by the parameters precision, recall, and accuracy achieved of 92%, 92%, and 92.2% using Cross-Validation with a K-Fold value of 10.
Analysis of Lampung Provincial Social Service website using PIECES framework
Authors: Hasibuan Muhammad Said , Ferianto Andry
Published: April 2023

The official website of the Social Office Lampung Provincial contains news content, routine activities, and information on public services. The website has been changed from an internal point of view but does not yet know how satisfaction is based on user perceptions. As a result, users no longer want to visit the Social Office website, which is one of the problems, so it is necessary to build a measurement model for the classification of website user problems using the Framework Pieces. Previously, the reliability and validity test of the questionnaire was taken from 338 samples of respondents, then entered the data analysis stage by assessing user characteristics based on the Likert scale and class intervals. Framework Pieces succeed to classify the problems of 338 samples in the range of good and poor. For the Performance domain with a score of 3,62 (Good), the Informations or Data domain with a score of 2,57 (Poor), Economics domain with a score of 3,35 (Moderate), Control or Security domain with a score of 3,61 (Good), Efficiency domain with a score of 3,36 (Moderate), finally for Service domain with a score of 2,60 (Poor).
Performance comparison of cache replacement algorithms onvarious internet traffic
Authors: Zulfa Mulki Indana , Fadli Ari , Permanasari Adhistya Erna , Ahmed Waleed Ali
Published: April 2023

Internet users tend to skip and look for alternative websites if they have slow response times. For cloud network managers, implementing a caching strategy on the edge network can help lighten the workload of databases and application servers. The caching strategy is carried out by storing frequently accessed data objects in cache memory. Through this strategy, the speed of access to the same data becomes faster. Cache replacement is the main mechanism of the caching strategy. There are seven cache replacement algorithms with good performance that can be used, namely LRU, LFU, LFUDA, GDS, GDSF, SIZE, and FIFO. The algorithm is developed uniquely according to the internet traffic patterns encountered. Therefore, a particular cache replacement algorithm cannot be superior to other algorithms. This paper presents a performance comparison simulation of the seven cache replacement algorithms on various internet traffic extracted from the public IRcache dataset. The results of this study indicate that the hit ratio performance is strongly influenced by cache size, cacheable and unique requests. The smaller the unique request that occurs, the greater the hit ratio performance obtained. The LRU algorithm shows an excellent hit ratio performance to perform cache replacement work under normal internet conditions. However, when the access impulse phenomenon occurs, the GDSF algorithm is superior in obtaining hit ratios with limited cache memory capacity. The simulation results show that GDSF reaches a 50.75% hit ratio while LRU is only 49.17% when access anomalies occur.
The effect of power spectral density on the electroencephalography of autistic children based on the welch periodogram method
Authors: Melinda Melinda , Enriko I Ketut Agung , Furqan Muhammad , Irhamsyah Muhammad , Yunidar Yunidar , Basir Nurlida
Published: April 2023

Autism spectrum disorder (ASD) is a serious mental disorder affecting social behavior. Some children also face intellectual delay. In people with ASD, the signals detected have abnormalities compared to normal people. This can be a reference in diagnosing the disorder with electroencephalography (EEG). This study will analyze the effect of Power spectral density (PSD) on the EEG of autistic children and also compare it with the PSD value on the EEG of normal children using the Welch Periodogram method approach. In the preprocessing stage, the Independent Component Analysis (ICA) method will be applied to remove artifacts, and a Finite Impulse Response (FIR) filter to reduce noise in the EEG signal. The study results indicate differences in the PSD values ​​obtained in the autistic and normal EEG signals. The PSD value obtained in the autistic EEG signal is higher than the normal EEG signal in all frequency sub-bands. From the study results, the highest PSD value obtained by the autistic EEG signal is in the delta sub-band, which is 54.06 dB/Hz, while the normal EEG signal is only 33.14 dB/Hz at the same frequency sub-band. And in the Alpha and Beta sub-bands, the normal EEG signal increases the PSD value, while in the autistic EEG signal, the PSD value decreases in the Alpha and Beta sub-bands. In addition, FIR and ICA methods can also reduce noise and artifacts contained in autistic and normal EEG signals.
The A(H5N1) Avian Influenza Virus at the Domestic Animal-Wildlife-Human Interface: Issues of Concern
Authors: Di Guardo Giovanni
Published: April 2023

A brief overview of the past and present trajectories made by the A(H5N1) avian influenza virus among domestic birds, avian and mammalian wildlife species and humans is presented here, thereby taking into special account the 2.3.4.4b clade of the virus recently emerged in several geographic areas of the globe.
Functional Donoho-Stark-Elad-Bruckstein-Ricaud-Torresani Uncertainty Principle
Authors: Krishna K. Mahesh
Published: April 2023

Let $(\{f_j\}_{j=1}^n, \{\tau_j\}_{j=1}^n)$ and $(\{g_k\}_{k=1}^m, \{\omega_k\}_{k=1}^m)$ be p-Schauder frames for a finite dimensional Banach space $\mathcal{X}$. Then for every $x \in \mathcal{X}\setminus\{0\}$, we show that \begin{align}\label{UE} \|\theta_f x\|_0^\frac{1}{p}\|\theta_g x\|_0^\frac{1}{q} \geq \frac{1}{\displaystyle\max_{1\leq j\leq n, 1\leq k\leq m}|f_j(\omega_k)|}\quad \text{and} \quad \|\theta_g x\|_0^\frac{1}{p}\|\theta_f x\|_0^\frac{1}{q}\geq \frac{1}{\displaystyle\max_{1\leq j\leq n, 1\leq k\leq m}|g_k(\tau_j)|}. \end{align} where \begin{align*} \theta_f: \mathcal{X} \ni x \mapsto (f_j(x) )_{j=1}^n \in \ell^p([n]); \quad \theta_g: \mathcal{X} \ni x \mapsto (g_k(x) )_{k=1}^m \in \ell^p([m]) \end{align*} and $q$ is the conjugate index of $p$. We call Inequality (\ref{UE}) as \textbf{Functional Donoho-Stark-Elad-Bruckstein-Ricaud-Torr\'{e}sani Uncertainty Principle}. Inequality (\ref{UE}) improves Ricaud-Torr\'{e}sani uncertainty principle \textit{[IEEE Trans. Inform. Theory, 2013]}. In particular, it improves Elad-Bruckstein uncertainty principle \textit{[IEEE Trans. Inform. Theory, 2002]} and Donoho-Stark uncertainty principle \textit{[SIAM J. Appl. Math., 1989]}.
Exosome Load Increases Systemically and Mediates Pro-tumoral M2 Macrophage Polarization in Lymphoma
Authors: Syeda Saima , Rawat Kavita , Shrivastava Anju
Published: April 2023

Macrophages are the key effector cells of innate immunity which show two polarized states: M1, classically activated and M2, alternatively activated. Tumor-associated macrophages (TAMs) which usually show M2 polarization, are immunosuppressive cells that enhance tumor metastasis and invasion. Also, enrichment of TAMs is known to be closely associated with poor prognosis of cancer patients. Therefore, TAMs are considered to be promising targets for immunotherapy. Importantly, tumor-derived exosomes emerged as a crucial player in immune regulation which can remodel the tumor microenvironment towards immunosuppressive state. Of note, few studies have shown that exosomes could induce polarization of macrophages towards M2 type in tumor condition, while others showed activation of M1 or mixed phenotype. Considering the role of TAMs in cancer, there is an urgent need to decipher the exosome-mediated cross-talk between tumor cells and macrophages.For this, we used murine model of Dalton’s lymphoma (DL), wherein, firstly, we evaluated increased exosome burden by assessing exosome level in serum as well as in various tissues of tumor-bearing host. Next, proteomic profiling of lymphoma-derived exosomes was done which revealed the presence of immunomodulatory proteins. Of note, these proteins were known to alter the macrophage polarization. In order to assess the effect of these exosomes on macrophages, we performed in vitro study using RAW264.7 cells. In vitro study revealed that frequent uptake of exosomes mediated a morphological change in macrophages which reduced their phagocytic activity. In parallel, exosomes increased reactive oxygen species (ROS) level and inhibited LPS-induced nitric oxide (NO) level in macrophages. Also, exosomes upregulated the expression of arginase-1 (an M2 marker) in macrophages but decreased the LPS-induced nitric oxide synthase 2 (NOS2) (an M1 marker) expression. Moreover, we observed a pro-tumoral cytokine profile in macrophages incubated with exosomes. Our study suggests that exosome load increases in lymphoma-bearing hosts systemically. Importantly, lymphoma-derived exosomes mediate the activation of macrophages towards pro-tumoral M2 type. Our results give an insight into the exosome-mediated tumor and immune cell cross-talk which could serve as an important prospect for targeting in cancer immunotherapy.
Pengaruh Iklim Organisasi, Motivasi Kerja dan Keadilan Organisasi Terhadap Organizational Citizenship Behaviour Pada Karyawan Perusahaan Umum di Jakarta dan Banten
Authors: Yulfiantie Hartono Syahla , Parimita Widya , Wahyu Handaru Agung
Published: April 2023

The purpose of the study was to find out whether the organization's climate, work motivation, and organizational fairness had an effect on organizational citizenship behavior. This study took a sample of 111 employees of Perum Bulog Kanwil DKI Jakarta and Banten. This study used descriptive and multiple linear regression analysis. The results of this study indicate that organizational climate has a positive and significant effect on organizational citizenship behavior, work motivation has a positive and significant effect on organizational citizenship behavior and organizational justice has a positive and significant impact organizational citizenship behavior. Simultaneously organizational climate, work motivation and organizational justice has an impact on organizational citizenship behavior.

 

Tujuan penelitian ini adalah untuk mengetahui apakah iklim organisasi, motivasi kerja dan keadilan organisasi berpengaruh terhadap organizational citizenship behaviour. Penelitian ini mengambil sampel sebanyak 111 karyawan Perum Bulog Kanwil DKI Jakarta dan Banten Penelitian ini menggunakan analisis deskriptif dan analisis regresi berganda. Hasil penelitian ini menunjukan bahwa iklim organisasi memiliki pengaruh positif dan signifikan terhadap organizational citizenship behavior, motivasi kerja memiliki pengaruh positif dan signifikan terhadap organizational citizenship behavior, dan keadilan organisasi memiliki pengaruh positif dan signifikan terhadap organizational citizenship behavior. Secara simultan, iklim organisasi, motivasi kerja, dan keadilan organisasi berpengaruh secara signifikan terhadap organizational citizenship behavior.
Faktor-Faktor Ketertarikan Berkunjung ke Daerah Wisata di Yogyakarta
Authors: Siti Ayu Fauziah Ayu , Usep Suhud  , Febrilia Ika
Published: April 2023

Tujuan dari penelitian ini adalah untuk menganalisis pengaruh factor-faktor apa saja yang berpengaruh terhadap ketertarikan berkunjung ke objek wisata di Yogyakarta. Objek penelitian menggunakan metode survey data statistik yang dimana merupakan tipikal penelitian kuantitatif, dengan instrument berupa kuesioner. Jumlah responden penelitian ini adalah 200 responden yang telah berkunjung ke Kota Yogyakarta. Analisa data dalam penelitian ini menggunakan SPSS versi 25 dan SEM dengan program AMOS versi 24. Hasil penelitian ini menunjukkan bahwa hipotesis pertama menyatakan bahwa variable citra Destinasi berpengaruh positif dan signifikan terhadap Kertertarikan Berkunjung, hipotesis kedua menyatakan bahwa variable Daya Tarik Budaya berpengaruh positif dan signifikan terhadap Ketertarikan Berkunjung hipotesis, ketiga menyatakan bahwa variable Promosi Media Sosial berpengaruh positif dan signifikan terhadap Ketertarikan Berkunjung, hipotesis keempat menyatakan bahwa variable Kualitas Layanan berpengaruh positif dan signifikan terhadap Ketertarikan Berkunjung dan hipotesis kelima variable Aksesibilitas berpengaruh positif dan signifikan terhadap Ketertarikan Berkunjung.
Pengaruh Perceived Value dan Promotion terhadap Revisit Intention dengan Kepuasan sebagai Intervening
Authors: Anggraeni Rina , Rizan Mohamad , Basrah Saidani
Published: April 2023

This study aims to determine the effect of perceived value and promotion on revisit intention with satisfaction as an intervention. Data was obtained by using a survey method with purposive sampling on a liktert scale to 220 respondents on visitors of Dunia Fantasi. The data analysis method used in this research is Structural Equation Modeling (SEM) using LISREL software version 8.8. The results show that there is a significant positive effect of perceived value on satisfaction, there is a significant positive effect of promotion on satisfaction, there is a significant positive effect of perceived value on revisit intention, there is a significant positive effect of promotion on revisit intention, there is a significant positive effect of satisfaction on revisit intention, there is a significant positive effect of satisfaction on revisit intention. There is a significant effect of perceived value on revisit intention through satisfaction, and there is a significant effect of promotion on revisit intention through satisfaction.

 

Penelitian ini bertujuan untuk mengetahui pengaruh perceived value dan promotion terhadap revisit intention dengan satisfaction sebagai intervening. Data diperoleh dengan menggunakan metode survei dengan purposive sampling secara skala liktert kepada 220 responden pengujung Dunia Fantasi. Metode analisis data yang digunakan dalam penelitian ini adalah Structural Equation Modeling (SEM) menggunakan Software LISREL versi 8.8. Hasil penelitian menunjukkan bahwa ada pengaruh positif signifikan perceived value terhadap satisfaction, terdapat pengaruh positif signifikan promotion terhadap satisfaction, terdapat pengaruh positif signifikan perceived value terhadap revisit intention, terdapat pengaruh positif signifikan promotion terhadap revisit intention, terdapat pengaruh positif signifikan satisfaction terhadap revisit intention, terdapat pengaruh signifikan perceived value terhadap revisit intention melalui satisfaction, dan terdapat pengaruh signifikan promotion terhadap revisit intention melalui satisfaction.
Excess Injury Mortality in Washington State During the 2021 Heat Wave
Authors: Casey Joan A. , Parks Robbie M. , Bruckner Tim A. , Gemmill Alison , Catalano Ralph
Published: April 2023

Objectives. To determine whether the 2021 Pacific Northwest heat wave resulted in excess injury (both unintentional and intentional) deaths.

Methods. With US death certificate data from December 29, 2013, to July 31, 2021, we generated weekly counts of injury deaths in Washington State and the rest of the country. We used time-series methods to identify excess injury deaths that may have occurred during and following the anomalously warm temperature period based on those expected from history and from simultaneous deaths in the remainder of the United States.

Results. Beginning the week including June 25, 2021 (heat wave initiation), 3 weeks exceeded the expected count of injury deaths in Washington State, with an estimated total of 159 excess injury deaths (95% detection interval = 122, 195) during the 3-week period.

Conclusions. The 2021 Pacific Northwest heat wave was associated with an increase in injury deaths.

Public Health Implications.

Under global warming scenarios, heat waves of this magnitude will become much more common. Adaptation and planning efforts are needed to protect residents of the historically temperate Pacific Northwest for a range of health outcomes. (Am J Public Health. 2023;113(6):657–660. https://doi.org/10.2105/AJPH.2023.307269 )
Hybrid Learning of ESP in Agriculture Field: Students’ Perceptions and Learning Experiences
Authors: Adi Sugeng Susilo
Published: April 2023

This research has the objective of describing the learning perceptions and experiences of students of the Agro Eco Technology Study Program while attending the English for Specific Purposes (ESP) course that is organized with the mode of hybrid learning. The students who became the subject of this research were those who study at the Kediri campus of Universitas Brawijaya. They are freshmen who had previously for two years experienced full online learning while studying in senior high school. This research used a mixed method, meaning applying both quantitative and qualitative approaches. Data are in the form of survey results and of interview results with several related parties, observations, and other relevant documents. Research results indicated that student perceptions regarding ESP learning were that it is able to improve the English language competence of students. Students found that the learning environment of ESP with hybrid learning was interesting, encouraging, enjoyable, accommodating of active participation, and not at all awkward. In addition, the opportunity given by the lecturer to students to show their work orally by uploading videos to a YouTube channel with the ‘everybody is a YouTuber’ program became a point that is perceived as able to encourage the students. They have positive responses about statements on the issues of attitude, of ease, of aspects of benefits, and of English language skills. The Internet connection that is sometimes unstable only became a minor hindrance.
Reconstruction of the Legality Principle: The Essence of the Pancasila Spirit in Criminal Law Reform
Authors: Mallarangan Kartini
Published: April 2023

The principle of legality is the main joint in criminal law. This is because the principle of legality relates to the rights and obligations of the community that have the potential to be subject to criminal law. This study aims to explore the values ​​of Pancasila in the renewal of the national criminal law through the reconstruction of the legality principle in the Draft Criminal Code. This research is normative legal research by prioritizing the concept and legislation approach. The results of the study confirm that the renewal of the national criminal law through the Draft Criminal Code is an important matter, especially by reconstructing the legality principle from formal legality to material legality. Reconstruction of the principle of legality is needed because the principle of legality is the heart of criminal law. This means the reconstruction of the criminal law specifically as well as the reconstruction of the principle of legality. Efforts to reconstruct the principle of legality should be guided by the values ​​of Pancasila as the ideals of Indonesian law. The reconstruction of the legality principle from formal to material, guided by the legal ideals of Pancasila is expected to be relevant to the needs and legal reality of the Indonesian people. This is so that Indonesian criminal law in the future has Indonesian ideals that it is in accordance with the nation's characteristics, personality, and legal ideals, namely Pancasila.
Neglected Elderly: Lacking Welfare Policies in Indonesian Local Governments
Authors: Akbar Said Fitra , Phahlevy Rifqi Ridlo
Published: April 2023

This study aimed to examine the social welfare policies for elderly citizens in local government in Indonesia, with a particular focus on the existence of regional regulations that address the needs of this vulnerable population. A normative method was employed, utilizing a statutory approach and deductive analysis of legal materials. The results of the study indicate that not all regions in Indonesia have local regulations that specifically address the welfare of the elderly. This finding highlights the need for increased attention and action from local governments in order to ensure the well-being and protection of elderly citizens.

Highlights:

The study focused on social welfare policies for the elderly in local government in Indonesia.

The research revealed that not all regions in Indonesia have local regulations that specifically address the welfare of the elderly.

This highlights the need for increased attention and action from local governments to ensure the well-being and protection of elderly citizens.
Las importaciones y las ventas de proyectos de construcción de almacenes en el Perú durante la pandemia COVID -19
Authors:   , Villars Molero Carsy , Seminario Luna Kevin Gilberto
Published: April 2023

La pandemia 2020 ocasionó una recesión que se tradujo en una contracción en las importaciones. En este sentido, se planteó como objetivo el determinar la relación que existe entre las importaciones y las ventas de la empresa Pavimaq S.A.C. durante la pandemia 2020; así como el analizar la relación entre las dimensiones de las importaciones: mercancía, proveedores y recursos humanos y las ventas. La metodología aplicada es cuantitativa de tipo correlación. Los resultados afirman la existencia de una correlación entre las importaciones y las ventas (sig. =.000; rho= .526); como también entre la dimensión mercancía (sig. = .021; rho= .429), proveedores (sig. = .012; rho= .478) y recursos humanos (sig. = .002; rho = .512).
Factores asociados al Síndrome de Burnout en estudiantes de Estomatología de una Universidad de Lima- Perú
Authors:   , Placencia Mejia Elvira Almendra
Published: April 2023

El Síndrome de Burnout (SB) es un síndrome ocupacional multifactorial compuesto que consta de tres dimensiones basadas en elevados niveles de agotamiento emocional, cinismo y efectividad académica. Se estima que el SB no solo perjudica a los profesionales de la salud, sino también involucraría al sector académico, ya que el proceso de formación universitaria podría ser una vivencia de aprendizaje, que va acompañada del estrés. Objetivo: El objetivo de este trabajo de investigación será determinar los factores asociados al Síndrome de Burnout en estudiantes de estomatología. Materiales y métodos: Estudio observacional, analítico y transversal, cuya muestra fue de 258 alumnos de pregrado de la carrera de estomatología. El instrumento de evaluación fue un cuestionario validado de 20 preguntas, en la cual incluían preguntas sobre datos de los alumnos y sobre las preguntas respecto al Síndrome de burnout. Resultados: El 10%(n=26) presentan el Síndrome de Burnout mientas que el 90%(232) no presenta. Los factores no estuvieron asociados al Síndrome de Burnout. Conclusiones: No hay una asociación entre los factores asociados y el Síndrome de Burnout en los alumnos de Estomatología.
Standardization of Complex Well Planning and Operations Through Organizational and Digital Transformations
Authors: Corona Mauricio , Franco Nata , Alvidrez Jesus
Published: April 2023

Complex well operations environment typically requires customized or unique solution for each well or challenge. The absence of standardized practices and constant "reinventing the wheel" leads to a lack of consistency and performance. A focus on standardization of well planning and operations has helped to eliminate areas of unnecessarily individual solutions. Digital and organizational transformations enabled consistency in well design, risk assessment and practices, as well a relentless focus on best-in-class execution.

The lack of collaboration between the business lines complicated the interfaces required between teams and resulted in variations between rigs, based often on personal preferences and individual lessons learned rather than technical or operational justifications. The complexity imbedded into field, complex well planning and operations created additional challenges in achieving excellent execution results and made it difficult to have predictable performance. The authors proposed a new way to manage this process across the organization to reduce variability.

A central well engineering design team was created, and it is core for the creation of standard drilling and completion programs, procedures and standards practices. The learning loop process is in place to ensure lessons learned and improved practices are updated in the standard procedures. The drilling team started their digital transformation by adopting to the new digital well planning solution for designing new wells, enhancing the engineering work, improving the overall planning processes, and generating drilling programs. Leveraging the built-in key functionalities enabled the drilling team to optimize their planning workflow and produce coherent drilling programs while improving planning efficiency. Throughout the deployment, the digital well planning solution promoted the collaboration between multi-disciplinary teams, allowing team members to work together in one virtual workspace where all relevant data is accessible to all engineers.

Standardization is a critical success factor to ensure the future competitiveness of any operator in challenging environment. Implementation of standardization drives towards expected outcomes and reduces the number of and occurrence of unplanned events. Technical and operational assurance is streamlined, utilization of junior engineering staff improves, and reduction in recycle time are additional benefits of standardization. This project details how a standard well engineering and design team and digital technologies were incorporated into the integrated well construction department to create a common framework for standard planning and operations, and how that helped on project's outperformance.
Mapping Circular Economy in Oil and Gas Facility
Authors: Al Rashid Mubarak
Published: April 2023

Oil and Gas remain critical components of the world's energy supply mix and there is an increasing need for minimizing the environmental impact associated with hydrocarbons. To address the trilemma of sustainability issues, including resources depletion, waste accumulation and ecosystem degradation, Abqaiq Plants, where over 5% of global oil production is processed, has established and embedded a systematic Circular Economy program for identifying business opportunities to reduce environmental impacts and GHG while improving economic and environmental sustainability.

The aim of the circular economy is therefore to make the most of the material resources available to us by applying three basic principles: reduce, reuse and recycle. In this way, the life span of products is extended, waste is used and a more sustainable transition model is established over time. The idea of circular economy ascends from imitating nature, where everything has value and everything is used, where waste becomes a new resource. By implementing circular economy, the balance between progress and sustainability is maintained.
Re-Injection of Produced Water: The Effect of Oil Micro-Emulsion Suspensions
Authors: Al Moajil Abdullah , Almubarak Tariq , Alotaibi Fares , Alhamad Luai
Published: April 2023

Re-injecting produced water is highly sought after to maintain reservoir pressure, preserve fresh water, and reduce water disposal costs. Produced water is often of low quality in terms of high total dissolved solids (TDS), inconsistent geochemical composition, bacteria content, and varying suspended solids and oil content. These factors pose a major formation damage risk if water re-injection into reservoirs is considered. The risks can be due to incompatibility with rocks (fines migration, permeability reduction, wettability alteration), the fluids (inorganic scale formation, emulsions), or the metal (Corrosion). Several water treatment processes exist to tailor such water into an acceptable injected fluid. The objective of this paper to provide an example analyzing produced water quality requirements and providing recommendations.

Oil in water content in produced water was measured using Ultra-violet (UV) spectroscopy. Coreflood testing was conducted to assess damage in carbonate core plugs due to suspended oil and solids at 140°F. Environmental scanning electron microscope (ESEM) showed precipitation because of injecting produced water into carbonate core plugs.

Re-injection of treated produced water can potentially cause reservoir damage due to combined effects of suspended oil, solids, and precipitation or scaling. The degree of reservoir damage is a function of oil/solids content, solid particle size, and scaling/precipitation potential. Oil/solid content and particle size in produced water should be reduced to lowest values that are economically feasible to achieve (e.g., total suspended solids (TSS) < 2 mg/L and total suspended oil (TSO) < 30-50 ppm. Well injection performance could be maintained through periodic flow back for routine clean-up, scheduled reservoir stimulations, and implementation of mentoring program at the water treatment plant and the wellhead to maintain water quality at a set threshold limit.
Debottlenecking to Increase Gas Production with the Right Approach
Authors: Muthiah Ponnusamy Saravanavel , Moinuddin Mohamed , The Lucio
Published: April 2023

As a result of the present market conditions, there is an increased demand for gas. However, because of the limited production facilities available to meet the increasing demand, existing plants must be debottlenecked to handle greater gas capacities or new plants must be constructed.

Constructing new plants requires longer lead times with significant capital expenditure (capex) investments. However, debottlenecking existing plants is a feasible option with a lower capex. Debottlenecking presents opportunities for quick deployments with marginal increases in production.

This paper explains the methodology and approach used to debottleneck a gas processing plant to produce a 20% greater throughput than that provided by the original design. The methodology and approach included the deployment of a novel tray type in the gas sweetening unit (GSU) contactor and engineering checks throughout the facility for validation.

A debottlenecking study was performed to increase the flow rate with minimal plant modifications within a minimum stoppage time. The challenges were to ensure the novel tray type would fit the designed hardware to improve the process, that all the studies were conducted in due time, and all plant modifications could be performed efficiently.

This paper describes the success story and best practices regarding the plant capacity increase, the performance of a plant study to accommodate the debottlenecking, and the maintenance of safety standards.
Transform Lamination into Geomechanic Stress Using Lwd Dual Images in Oil Based Mud Environment
Authors: Albasheer Noor , Akinyose Olusegun , Santoso Gagok , Mohiuddin Mohammed
Published: April 2023

Laminations in carbonate rocks lead to variations in geomechanical properties parallel and perpendicular to the bedding plane. Accounting for the presence of these geological features results in accurate estimation of the rock geomechanical properties and optimize the hydraulic fracturing designs. The current study aims to identify the lamination along a horizontal section in a carbonate reservoir, using dual imaging Logging-While-Drilling (LWD) technology, and discusses the impact of such laminations in geomechanics stress modeling and hydraulic fracture planning.

Ultrasonic and apparent resistivity images from recorded mode data were used to interpret geological features such as fractures, faults, cross-beddings, and secondary porosity intervals. Quad combo measurements, including gamma ray, propagation resistivity, density, neutron, shear and compressional sonic measurements were also used for the evaluation. Processed high-quality caliper logs (180 sectors) were used to validate stress interpretation related to the geomechanics. The vertical synthetic log property modeling was generated and derived properties like Uniaxial Compressive Strength (UCS) and stresses were computed in True Stratigraphic Thickness (TST) scale. These clearly showed the variation of properties in individual layers. Hydraulic fractures propagating vertically at any point in the horizontal wellbore will experience these variations in properties. This analysis evidently shows layers acting as stress barriers and can be used to further enhance hydraulic fracture planning.
Exploring the perceptions community pharmacists have towards the COVID-19 vaccine using a qualitative approach
Authors: Teeluck Shruti , Petrus Ruwayda , Moodley Rajatheran , Bangalee Varsha
Published: April 2023

Background
Since the severe acute respiratory syndrome coronavirus (SARS-CoV-2) in China emerged, millions have been affected. Due to the spread of the virus, and the increasing number of cases and deaths, the crisis has been declared a global pandemic. There have been several suitable vaccines and South Africa (SA) commenced its rollout in February 2021. The pharmacists have played a vital role through the Coronavirus Disease 2019 (COVID-19) pandemic as they are the first point of care for many. It is equally necessary to explore their perceptions towards the vaccine and vaccine rollout. In this study, the Theory of Planned Behaviour is utilized to explore pharmacists’ behaviour based on their perceptions towards the COVID-19 vaccine and the rollout.
Method
This study used a qualitative approach to gain depth on the topic and purposive sampling was used. Thereafter, more participants were recruited via a snowballing technique. All participants were community pharmacists in Durban, SA which was a COVID-19 hotspot. A letter of invitation containing an informed consent form was filled in by every participant. Semi-structured interviews were carried out and was audio recorded. Thereafter, the audio recordings of each interview were transcribed verbatim. Relevant quotes were isolated from the interview and were grouped into themes and sub-themes using Braun and Clark’s six-step data analysis.
Results
The four main themes were: Perceptions on the COVID-19 vaccine; Views on the vaccine rollout strategy; Pharmacist as an educator on the COVID-19 vaccine; Vaccine provision at the pharmacy. Each heading was broken down into sub-themes which were: vaccines are a social responsibility, pharmacists’ vaccine concerns, pharmacists’ views on the rollout strategy, pharmacists’ priority in vaccination, pharmacists’ self-reflection as an educator on COVID-19 vaccines, education topics, pharmacists’ sources of information for counselling, assuming the responsibility of becoming a vaccination centre, responsibilities of a pharmacist in a vaccine centre, planning and implementation to provide vaccines, challenges expected/currently experienced.
Conclusion
The pharmacist had a positive outlook on the COVID-19 vaccine and support the rollout. Furthermore, they play a necessary role in the vaccine rollout by educating patients and providing the vaccine at their pharmacies.
High Prevalence of Erectile Dysfunction in Men With Hyperthyroidism: a meta-analysis
Authors: Liu Xiaowen , Wang Yanling , Ma Li , Wang Danhui , peng Zhihong , Mao Zenghui
Published: April 2023

Objective: The purpose of the study was to evaluate the association between hyperthyroidism and risk of erectile dysfunction (ED).
Methods: Pubmed, Embase, Cochrane, and Web of Science databases were searched for all studies evaluating men with hyperthyroidism who had erectile dysfunction, and the Newcastle-Ottawa Quality Rating Scale to evaluate the quality of studies for meta-analysis, and Stata 16.0, RevMan 5.3 software was used for Meta-analysis.
Results: A total of 4 papers with 25519 study subjects were included, of which the number of patients suffering from hyperthyroidism was 6429 and the number of controls was 19090. The overall prevalence of ED in patients with comorbid hyperthyroidism was 31.1% (95% CI 0.06-0.56). The incidence of ED in patients with combined uncomplicated hyperthyroidism was 21.9% (95% CI 0.05-0.38). The ED increased significantly in the group with hyperthyroidism in four studies (OR: 1.73; 95% CI [1.46-2.04]; p < .00001).
Conclusion: Our findings demonstrates that patients with hyperthyroidism had more incidence of ED. These data can inform discussion between physicians and patients with hyperthyroidism regarding the choice of therapy for ED.