bluuebunny/crossref_metadata_2025 huggingface dataset:
A- and D-optimal designs in real life data using imperialist comparative algorithm
Authors: Bodunwa O. K. , Adewole A. I.
Published: March 2023

In this paper, we used Imperialist Competitive Algorithm (ICA) to get A-and D-optimal de­signs for two models; one with nonlinear and the other linear model were found for two life data. It was noted that the number of iterations for D-optimal design for both models was smaller than that of A-optimal design. This implies that getting a D-optimal design is preferable and saves time and energy compared to A-optimal since they are addressing the same issues related to the variance-covariance function. The Efficiency Lower Bound and the Sensitivity function embedded in ICA which support the general equivalent theorem in getting optimal design were also found in this study. Another advantage of using ICA algorithm is that it does not require the design space or the region of uncertainty to be discretized which means that the search for the support points of the optimal design is not restricted to the grid point. This was also confirmed here that the optimal design for A and D- designs were not restricted to the grid points.
Involvement of rural households along enterprise value chain of the indigenous black-soap from ash-derived alkali
Authors: Alabi D. L. , Makinde D. F.
Published: March 2023

The study assessed the involvement of rural households along the indigenous black-soap enterprise value chain in Oyo State, Nigeria. It specifically described selected socio-economic characteristics of the respondents; examined their reasons for involvement in the enterprise; identified their involvement in various activities at every stage along the enterprise value chain and determined their involvement levels. 210 respondents were selected for the study using a multistage sampling procedure. Both quantitative and qualitative data were collected using an interview schedule and FGD respectively. Appropriate descriptive statistical tools were used to summarize the data while ANOVA was used to test the hypothesis. Results showed that the mean initial business capital was ₦12,817.63 while the mean monthly income was ₦21,953.03. Respondents were involved in the black-soap enterprise because it serves as a means of livelihood for the households (mean = 2.91) and is profitable (mean = 2.80). Involvement was high in the production stage, low in the value addition stage and moderate in the marketing stage. At p ≤ 0.01, a significant difference exists in the overall involvement level along the value chain across the study area (F = 8.99**). The study concluded that respondents’ overall involvement along the black-soap enterprise value chain was moderate.
Purifying surface waters contaminated with natural organic matters and bacteria using Ag/PDA-coated PES membranes
Authors: Wai Kok Poh , Koo Chai Hoon , Pang Yean Ling , Chong Woon Chan , Lau Woei Jye
Published: March 2023

Polymeric membrane is susceptible to fouling particularly when it is used to treat surface water contaminated by natural organic matters and bacteria. Surface modification may address the issue by imparting antifouling and antibacterial properties to the membrane. In this study, a neat polyethersulfone (PES) membrane (denoted as membrane P1) was prepared by phase inversion method followed by polydopamine (PDA) coating to improve its membrane hydrophilicity. Thereafter, the physicochemical properties of the PDA-coated PES membrane (denoted as membrane P3) were further improved by in situ reduction of silver (Ag) onto its surface to impart antibacterial properties (denoted as membrane P4). All membranes were instrumentally characterized while their filtration performance against humic acid (HA) and antibacterial properties were evaluated. Results showed that membrane P1 removed 77.81% of HA and achieved a fouling recovery rate (FRR) of 65.72%. Upon Ag immobilization, the HA rejection of membrane P4 was further improved to 95.14% with FRR recorded at 92.17%. This membrane also demonstrated good stability and excellent antibacterial properties over other fabricated membranes (P1, P2 and P3) in this study. Moreover, it exhibited a lower total flux decline and higher contaminant removal performance over membrane P1 in treating surface water samples.
Synthesis of Ti/SnO2-Sb electrode modified by nitrogen and sulfur co-doped graphene for optimization the electrooxidation of neutral red and methyl orange dyes
Authors: DOUMBI Romuald TEGUIA , NOUMI Guy Bertrand , DOMGA
Published: March 2023

The degradation of methyl orange (MO) and neutral red (NR) was studied by the direct electrooxidation using nitrogen and sulfur co-doped graphene (NSG) supported antimony doped tin oxide (SnO2-Sb). Sol-gel and microwave technics were used to prepare the material (Ti/SnO2-Sb-NSG). Raman, XRD, FTIR and TGA/DSC analyses help to confirm the coating of titanium substrate with the SnO2-Sb-NSG film. Linear sweet voltammetry results show that Ti/SnO2-Sb-NSG material possesses high oxygen overvoltage. Three independent variables including electrolysis time, current density and dye concentration on the performance of the anodic oxidation system was modeled using the Box-Behnken Design. The optimum conditions for MO and NR degradation were for current density 18 mA/cm² and 58 mA/cm², electrolysis time 6 h and 6 h and dye concentration 29 mg/L and 82 mg/L, respectively. However, based on these optimums, MO was degraded at 98.71 % while NR was just degraded at 82.7%. Based on the intermediate compounds, the degradation mechanism of MO at the Ti/SnO2-Sb-NSG anode was proposed. Ti/SnO2-Sb-NSG electrode showed a higher efficient electrocatalytic performance for NR and MO degradation than that of Ti/Sb-SnO2 or Ti/Sb-SnO2-NG electrodes. Furthermore, the lifetime of Ti/SnO2-Sb-NSG was about 31.6 h while Ti/SnO2-Sb electrode was 9.0 h.
Effect of landfill in-situ aeration with novel air amplifier: A case study
Authors: Song Sang-Hoon , Kim Ran-Hui , Kim Sang-Min , Lee Nam-Hoon , Park Jin-Kyu
Published: March 2023

Landfill aeration may cause economic problems due to the amount of power consumed by blowers. Thus, this study proposes the use of an air amplifier to reduce the power consumption of air injection into landfills. The developed air amplifier is an aerodynamic device that induces a large amount of airflow using a small quantity of compressed air caused by the Coanda effect. Field experiment results demonstrated that the use of the air amplifier reduced power consumption by at least 90% and showed an air amplification effect of approximately 3.5 times compared with existing in-situ aeration systems. After aeration, the methane (CH4) reduction efficiency was 90.3%. The CH4/CO2 ratio was 0.12 (0.06–0.25) on average, and the CH4/CO2 ratio decreased as the oxygen concentration increased. Thus, the air amplifier is a low-cost solution for landfill aeration systems. In addition, aeration using existing leachate collection and drainage pipes was found to be more economical than air injection using air injection wells. However, despite the air injection, approximately 20% of organic carbon was decomposed anaerobically. The CH4/CO2 ratio range of 0.56–0.90 was presented as a criterion for categorizing a landfill as semi-aerobic.
ẢNH HƯỞNG CỦA ĐIỀU KIỆN NUÔI CẤY ĐẾN KHẢ NĂNG ỨC CHẾ Bacillus cereus CỦA Bacillus subtilis NN12 VÀ Bacillus licheniformis KN12
Authors: NGUYỄN NGỌC ẨN  , ĐINH THỊ NGỌC NGÂN  , TRỊNH TIỀN KIM NGÂN  , NGUYỄN PHÚC THẠNH  , LÊ THỊ VY HIỀN  , VÕ THỊ CẨM GIANG  , NGUYỄN THỊ DIỆU HẠNH  , PHẠM TẤN VIỆT*
Published: March 2023

Việc lạm dụng các thuốc kháng vi sinh vật có bản chất tự nhiên lẫn hóa học đã và đang là nguyên nhân tạo nên các chủng vi sinh vật kháng thuốc. Thêm vào đó, tình trạng cạn kiệt nguồn kháng sinh mới là một trong những mối lo ngại hàng đầu của thế giới. Do đó, đề tài nghiên cứu này đã được tiến hành với mục đích bước đầu khai thác nguồn hợp chất kháng vi sinh vật tiềm năng từ các loài Bacillus. Khả năng ức chế các vi khuẩn gây bệnh, ảnh hưởng của điều kiện nuôi cấy đến khả năng sản xuất các hợp chất kháng vi sinh vật từ hai chủng Bacillus subtilis NN12 và Bacillus licheniformis KN12 đã được khảo sát. Thử nghiệm đối kháng invitro cho thấy chủng B. subtilis NN12 và B. licheniformis KN12 có khả năng ức chế mạnh đối với chủng vi khuẩn B. cereus. Ngoài ra, kết quả khảo sát ảnh hưởng của điều kiện nuôi cấy đến sự sinh tổng hợp các hợp chất kháng khuẩn B. cereus của 2 chủng nghiên cứu đã cho thấy môi trường chứa 1,0% glucose, 0,5% peptone hoặc cao nấm men, pH 6,0, tốc độ lắc 150 vòng/phút trong 18 giờ, ở 33°C là điều kiện thích hợp đối với B. subtilis NN12 và môi trường bổ sung 1,0% glucose hoặc tinh bột, 0,5% ure, pH 5,0, tốc độ lắc 150 vòng/phút trong 18 giờ ở 37°C-45°C là điều kiện thích hợp đối với B. licheniformis KN12. Hoạt tính đối kháng của dịch nuôi cấy B. subtilis NN12 nhạy cảm với nhiệt độ và proteinase K, trong khi dịch nuôi cấy B. licheniformis KN12 thì thể hiện sự bền nhiệt và bền với proteinase K. Các kết quả đạt được sẽ là tiền đề cho các nghiên cứu hợp chất kháng vi sinh vật gây bệnh trong tương lai gần, góp phần vào các phương pháp hỗ trợ điều trị bệnh nhiễm trùng, các ngành nông nghiệp và công nghiệp thực phẩm.
EL NIÑO VÀ LƯỢNG BỐC THOÁT HƠI THAM CHIẾU Ở MIỀN NAM NƯỚC TA
Authors: LƯƠNG VĂN VIỆT
Published: March 2023

Nghiên cứu này thực hiện việc khảo sát hệ số tương quan giữa nhiệt độ nước biển bề mặt (SST) quanh khu vực giám sát El Niño với lượng bốc thoát hơi tham chiếu (ETo) tại các trạm ở phía nam nước ta nhằm tìm kiếm một nhân tố mới cho cảnh báo ETo. Số liệu đưa vào khảo sát là các yếu tố khí tượng của 40 trạm quan trắc có liên quan đến bốc thoát hơi tại các tỉnh phía nam, SST của các vùng giám sát El Niño và trường SST tái phân tích của NCEP/NCAR từ năm 1978 đến năm 2018. Các phương pháp sử dụng trong nghiên cứu là phân tích tương quan theo không gian và phân tích thành phần chính. Kết quả nghiên cứu cho thấy SST ở khu vực Niño 3.4 có quan hệ tốt nhất với ETo miền nam nước ta. Ngoài ra nghiên cứu này đã xác định được ba vùng trên khu vực nhiệt đới Thái Bình Dương mà các thành phần chính của nó có quan hệ tốt nhất với ETo. Thành phần chính thứ 3 của SST tại vùng bao quanh khu vực Niño 3.4 có quan hệ khá tốt với ETo ở miền nam nước ta. Sử dụng thành phần này để xây dựng một chỉ số mới nhằm giám sát hoạt động của El Niño và La Niña, kết quả cho thấy chỉ số mới này có thể sử dụng cho cảnh báo ETo nước ta. So với chỉ số Niño đại dương thì chỉ số này có ưu điểm hơn trong cảnh báo ETo trong khoảng thời gian từ tháng 10 đến tháng 2. Ngoài ra, kết quả nghiên cứu còn cho thấy có thể kết hợp giữa chỉ số này và chỉ số Niño đại dương trong cảnh báo bốc thoát hơi cho miền nam nước ta.
Genome assembly of the deep-sea coral Lophelia pertusa
Authors: Herrera Santiago , Cordes Erik E.
Published: March 2023

Like their shallow-water counterparts, cold-water corals create reefs that support highly diverse communities, and these structures are subject to numerous anthropogenic threats. Here, we present the genome assembly of Lophelia pertusa from the southeastern coast of the USA, the first one for a deep-sea scleractinian coral species. We generated PacBio continuous long reads data for an initial assembly and proximity ligation data for scaffolding. The assembly was annotated using evidence from transcripts, proteins, and ab initio gene model predictions. This assembly is comparable to high-quality reference genomes from shallow-water scleractinian corals. The assembly comprises 2,858 scaffolds (N50 1.6 Mbp) and has a size of 556.9 Mbp. Approximately 57% of the genome comprises repetitive elements and 34% of coding DNA. We predicted 41,089 genes, including 91.1% of complete metazoan orthologs. This assembly will facilitate investigations into the ecology of this species and the evolution of deep-sea corals.
Association of pain and clinical factors on disability and quality of life in systemic sclerosis: A cross-sectional study from Turkish League Against Rheumatism Network
Authors: Çevik Remzi , Em Serda , Nas Kemal , Toprak Murat , Cengiz Gizem , Çalış Mustafa , Sezer İlhan , Ünal Enginar Ayşe , Bora Karslı Pınar , Sağ Sinem , Sargın Betül , Alkan Melikoğlu Meltem , Aydın Yıldıray , Tuncay Duruöz Mehmet , Hande Gezer Halise , Ecesoy Hilal
Published: March 2023

Objectives: In this study, we aimed to evaluate the factors associated with disability and quality of life (QoL) in Turkish patients with systemic sclerosis (SSc).

Patients and methods: Between January 2018 and January 2019, a total of 256 SSc patients (20 males, 236 females; mean age: 50.9±12.4 years; range, 19 to 87 years) who were diagnosed with SSc were included in the study. Disability and health-related QoL (HRQoL) were evaluated by the Health Assessment Questionnaire (HAQ), scleroderma HAQ (SHAQ), Duruöz Hand Index (DHI), and Short Form-36 (SF-36). Linear regression analysis methods were used to describe factors associated with disability and QoL of the patients.

Results: All disability scores were higher and HRQoL scores were lower in diffuse cutaneous SSc patients compared limited cutaneous SSc, and differentiations were significant (p=0.001 and p=0.007). In multiple regression, pain (VAS) was the strongest predictor for high disability and low QoL scores (p<0.001) as HAQ (β=0.397, 0.386, 0.452), SHAQ (β=0.397, 0.448, 0.372), DHI (β=0.446, 0.536, 0.389), PCS (β=-0.417,-0.499, -0.408) and MCS (β=-0.478, -0.441, -0.370) in combined, lcSSc and dcSSc patients respectively. The factors associated with high disability and low QoL scores were forced vital capacity for HAQ (β=-0.172, p=0.002) and SF-36 PCS (β=0.187, p=0.001); disease duration for HAQ (β=0.208, p<0.001), DHI (β=0.147, p=0.006), and SF-36 PCS (β=-0.134, p=0.014); 6-minute walk test for HAQ (β=-0.161, p=0.005) and SF-36 PCS (β=0.153, p=0.009); and modified Rodnan skin score for SHAQ (β=0.250, p<0.001) and DHI (β=0.233, p<0.001) in SSc patients. Diffusing capacity of the lungs for carbon monoxide for HAQ (β=-0.189, p=0.010) and SHAQ (β=-0.247, p=0.002); erythrocyte sedimentation rate for DHI (β=0.322, p<0.001); age for SF-36 PCS (β=-0.221, p=0.003) and body mass index for SF-36 PCS (β=-0.200, p=0.008) and MCS (β=-0.175, p=0.034) were the other variables associated with high disability or low QoL scores in SSc subsets.

Conclusion: Clinicians should consider the management of the pain and its sources as a key to improve better functional state and quality of daily life in SSc.
Patients with inflammatory myopathies overlapping with systemic sclerosis: A Brazilian-Japanese bicentric study
Authors: Gonçalves Júnior Jucier , Mugii Naoki , Tiharu Inaoka Pleiades , Miossi Renata , De Souza Fernando Henrique Carlos , De Oliveira João Calvino Soares , Someya Fujiko , Hamaguchi Yasuhito , Matsushita Takashi , Degrava Sampaio-Barros Percival , Katsuyuki Shinjo Samuel
Published: March 2023

Objectives: This study aims to describe and compare the demographic, clinical, and laboratory characteristics and follow-up of representative samples of patients with myopathies and systemic sclerosis overlap syndromes (Myo-SSc) from two tertiary centers.

Patients and methods: This is a cross-sectional and retrospective study conducted between January 2000 and December 2020. Fourty-five patients were analyzed with Myo-SSc (6 males, 39 females; mean age: 50.2±15.4 years; range, 45 to 65 years) from two tertiary centers (n=30 from Brazil and n=15 from Japan).

Results: The median follow-up was 98 (range, 37 to 168) months. Muscle impairment started simultaneously with the diagnosis of systemic sclerosis in 57.8% (26/45) of cases. Muscle involvement occurred before the onset of systemic sclerosis in 35.5% (16/45) of cases, and after in 6.7% (3/45). Polymyositis was observed in 55.6% (25/45) of cases, followed by dermatomyositis in 24.4% (11/45) and antisynthetase syndrome in 20.0% (9/45). Concerning systemic sclerosis, the diffuse and limited forms occurred in 64.4% (29/45) and 35.6% (16/45) of the cases, respectively. Comparing the subgroups, Myo or SSc onset was earlier in Brazilian patients, and they had a higher frequency of dysphagia (20/45, [66.7%]) and digital ulcers (27/45, [90%]), whereas Japanese patients had higher modified Rodnan skin scores (15 [9 to 23]) and prevalence of positive anti-centromere antibodies (4/15 [23.7%]). The current disease status and mortality were similar in both groups.

Conclusion: In the present study, Myo-SSc affected middle-aged women, and its manifestation spectrum varied according to geographic distribution.
Phenomenon of free painting: Comparison of the artistic images of the modernism era and children's painting
Authors: Zhytnik Тetiana , Prokofieva Olesia , Kanarova Olga , Nikirenkova Anastasiia
Published: March 2023

The relevance of the study is due to the significant changes in the content of education, in particular, art education; the need for a thorough study of modern methods of teaching and upbringing a child, analysis of the modern children’s needs, taking into account the psycho- physiological features of their development and periodization of the children's painting development. The aim of the article is to analyze the artistic images of modernism era artists and artistic images created by preschool children in the process of painting, to identify the common features, find out the analogies, describe manifestations and characteristics. Objectives: to analyze and characterize the phenomenon of free painting; compare the artistic images created by the modernism era artists and preschool children; consider the means of expression used by both groups of recipients, compare them, identify the common things, draw an analogy. The following research methods are used: comparison, which is the basis of such logical method as an analogy; comparison as a comparative-historical method that reveals the general and special features of the phenomena, different stages of development of the same phenomenon or different coexisting phenomena; analysis which helps to identify and compare levels of the development of the phenomenon under study, explore changes, identify trends. The method of formalization is also used, as it clarifies the content of thought by specifying its logical form.
Cursos en línea: Desarrollo de contenido propio o uso de terceros
Authors: Bañuelos Márquez Ana Ma.
Published: March 2023

El desarrollo de un curso en línea requiere de una planeación didáctica que conlleva la elección de las estrategias de enseñanza, las actividades de aprendizaje y de evaluación, así como la elaboración o selección de los materiales didácticos que soportarán los contenidos académicos. Una manera de realizar esto último es a través de la producción de contenido “ad hoc”, o bien, empleando algún material en existencia. El objetivo del artículo es proponer una serie de consideraciones tanto para el desarrollo de contenido propio, como para el uso de algo hecho por otra persona o institución educativa.
Peculiarities of the use of distance learning information technologies in higher education institutions of Ukraine
Authors: Сherkasov Volodymyr , Maslov Valerii , Telep Oksana , Oseredchuk Olha , Hasniuk Veronika
Published: March 2023

The article considers the process of informatization as one of the main directions in the development of higher education. Distance learning technologies that can be used in the traditional educational process to improve the quality of education are analyzed. The main attention is paid to the local (internal university) computer network. A description of the information resources of such a learning system is given.

Problem: based on the analysis in the science of research, own research results, the research problem was formulated, determined by the following contradictions: the growing need between high-quality training of specialists and the lack of analysis of problems and prospects for the development of distance learning in Ukraine.
Layout Design Based on Capacity Planning at Mika MSMEs Using BOL Approach and BLOCPLAN Algorithm
Authors: Maharani Tantya Dega Wahyu , Damajanti Dida Diah , Astuti Murni Dwi
Published: March 2023

Based on historical data in 2020, Mika MSMEs could not meet the demand for gamis cloth production. It is proven that there is a capacity shortage that occurs in the third process, namely the sewing process as much, as 0.5%. The RCCP method with the BOL methodology was used to perform the capacity calculation, and the results suggested the necessity for an alternate addition of three workers to the sewing process. With an alternative usage fee of IDR 7,700,000/month and a profit of IDR 262,300,000/month. PAM tools help analyze the problem that there is transportation waste, with the largest percentage of 39.68% in Mika MSMEs. Layout improvements were made using the BLOCPLAN algorithm by considering the largest R-Score value. The proposed layout design provides for a displacement of 2080 meters/day, a transfer time of 1934 seconds/day, and the use of one production floor.

Berdasarkan data historis pada tahun 2020, UMKM Mika tidak dapat memenuhi permintaan produksi baju gamis. Hal ini dibuktikan bahwa adanya kekurangan kapasitas yang terjadi pada proses ketiga yaitu proses sewing sebanyak 0.5%. Dilakukan perhitungan kapasitas menggunakan metode RCCP dengan pendekatan BOL, dan diperoleh usulan berupa perlunya alternative penambahan tiga tenaga kerja pada proses sewing. Dengan biaya penggunaan alternatif Rp7,700,000/bulan dan keuntungan sebesar Rp262,300,000/bulan. Tools PAM membantu melakukan analisis permasalahan bahwa terdapat pemborosan transportasi dengan persentase terbesar 39.68% di UMKM Mika. Dilakukan perbaikan tata letak menggunakan algoritma BLOCPLAN dengan memperhatikan nilai R-Score terbesar. Didapatkan usulan perancangan tata letak berupa perpindahan sebanyak 2080 meter/hari, waktu transportasi sebanyak 1934 detik/hari, dan dengan penggunaan satu lantai produksi.
Comparative Study of Numerical and Experimental Analysis of Micro Hydro Power Plant in Nagari Koto Hilalang Solok Regency
Authors: Anisa Khairuni Delfi , K Arwizet , Lapisa Remon , Mulianti Mulianti
Published: March 2023

Indonesia has the potential to produce large amounts of electrical energy by utilizing sustainable energy, especially water energy. There are still many areas that are far from urban areas that do not have electricity, especially remote areas. One of them is Nagari Koto Hilalang, Solok Regency, which has built a Micro Hydro Power Plant (PLTMH). The purpose of this research was to determine the capacity and potential of PLTMH in Nagari through simulation. This research uses the Computational Fluid Dynamics (CFD) simulation method with the Ansys Fluent 2021 R2 Student Version software. The magnitude velocity simulation values for the inlet velocity 12.44 m/s, 13.28 m/s, and 13.65 m/s produce different maximum values for the runner. The resulting torque has a value of 110.5 Nm. The exact output power generated by the Ansys simulation has a value of 10.78 kW. The efficiency of the turbine with a power of 10.78 kW obtained from the simulation results is 66%.

Indonesia memiliki potensi untuk menghasilkan energi listrik yang besar dengan memanfaatkan energi yang berkelanjutan terutama energi air. Masih banyak daerah yang jauh dari perkotaan belum teraliri oleh listrik terutama daerah terpencil. Salah satunya Nagari Koto Hilalang, Kabupaten Solok yang sudah dibangun Pembangkit Listrik Tenaga Mikro Hidro (PLTMH). Tujuan dari penelitian ini adalah untuk mengetahui kapasitas dan potensi PLTMH yang ada di nagari tersebut melalui simulasi. Penelitian ini menggunakan metode simulasi Computational Fluid Dynamics (CFD) dengan software Ansys Fluent 2021 R2 Student Version. Nilai simulasi kecepatan magnitude untuk velocity inlet 12,44 m/s, 13,28 m/s dan 13,65 m/s menghasilkan nilai maksimum yang berbeda pada runner. Torsi yang dihasilkan memiliki nilai 110,5 Nm. Daya luaran yang tepat yang dihasilkan oleh simulasi Ansys memiliki nilai 10,78 kW. Efisiensi pada turbin dengan daya 10,78 kW yang didapat dari hasil simulasi yaitu 66%.
Analysis of Mental Workload in The Production Department PT. XYZ Using NASA-TLX Method
Authors: Haq Fajri Arinal , Wahyudin Wahyudin , Pratiwi Fatmawati
Published: March 2023

PT. XYZ is a Machining, Fabrication, Automation, Manufacturing (Precision Part, JIG & Fixture) company, Engineering (Design Mechanic, pneumatic, system, Hydraulic System) and maintenance services. Production operators, with limited resources, often carry out large, complex, time-consuming jobs with high demands on quality and accuracy. These conditions make operators often do work that demands more attention in a long period of time, often even working overtime so that work can be completed on the target time. It is feared that what this operator is experiencing will exceed the limits of their workload, especially the amount of mental workload. To analyze this PT. XYZ uses the NASA-TLX (National Aeronautics and Space Administration Task Load Index) method on workers from the production department. The results showed that the mental workload felt by ten workers was included in the high classification with an average WWL value of 76.33.

PT. XYZ merupakan perusahaan Machining, Fabrication, Automation, Manufacturing (Precision Part, JIG & Fixture), Engineering (Design Mechanic, pneumatic, system, Hydraulic System) serta jasa maintenance. Operator produksinya, dengan sumber daya yang terbatas, sering melakukan pekerjaan dalam jumlah yang besar, kompleks, waktu yang singkat, serta tuntutan kualitas dan ketelitian yang tinggi. Kondisi tersebut membuat operator sering melakukan pekerjaan yang menuntut perhatian lebih dalam periode waktu yang lama, bahkan sering lembur agar pekerjaan dapat selesai pada terget waktunya. Apa yang dialami operator ini dikhawatirkan akan melebihi batas beban kerjanya, terkhusus besarnya beban kerja mental. Untuk menganalisa hal tersebut PT. XYZ menggunakan metode NASA-TLX (National Aeronautics and Space Administration Task Load Index) pada pekerja dari departemen produksi. Hasil penelitian menunjukkan bahwa beban kerja  mental yang dirasakan oleh sepuluh pekerja masuk dalam klasifikasi tinggi dengan nilai WWL rata-rata adalah 76,33.
Effect Of Additional Probiotic In Cattle Feed On Cattle's Consumption And Growth Rate
Authors: Lingga Rahmad , Puji Astuti Rufti , Ilham Bahtera Novyandra , Adibrata Sudirman , Nurjannah Nurjannah , Ahsaniyah Shinta , Fatansyah Firzan , Irawati Irawati
Published: March 2023

This study aimed to determine the level of feed consumption, weight gain of cattle, and to calculate the population of lactic acid bacteria (LAB) and pathogenic bacteria Escherichia coli and Salmonella in cattle feces in order to determine the effect of giving probiotics on the digestive system of cattle. The research object used was 10 bali cattle with a weight of about 90-120 kg. The data in this study were analyzed by experimental design using analysis of variance to determine the effect of giving probiotics to cattle feed on cattle weight gain. The treatment in question includes G0 with treatment in the form of feeding with a composition of 60% forage, 15% palm cake, 25% cassava, and 100 ml molasses. Meanwhile, G1 was treated with the same feed as G0, but added with 100 ml of probiotic Probio_FM. Based on the results of the study, it is known that probiotics given to cattle feed showed no significant effect on the level of feed consumption and body weight of cattle where cattle with non-probiotic feed had a higher average consumption level than cattle on probiotic feed. Furthermore, this causeed the average weight gain of non-probiotic cattle to be higher than that of probiotic cattle. In addition, it was known that the population of Lactic Acid Bacteria in the feces of probiotic cattle showed a higher number of LAB colonies compared to non-probiotic cattle with numeric values of 3.6x108, 3.3x109, and 2.7x1010. This proved that giving probiotics to bali cattle with a concentration of 100 ml / 100 kg of feed was able to increase the concentration of lactic acid bacteria in the digestive system.
Analysis Of The Influence Of Compensation, Leadership Style And Professional Competency On Employee Turnover Intention Level With Organizational Commitment As A Moderation Variable In Rsu.Royal Prima Medan
Authors: Tarigan Samuel , Ria Ginting Rasinta , Romy Elly , Purba Kuras
Published: March 2023

This study aims to partially analyze the effect of compensation, leadership style and professional competence on the level of turnover intention of employees of RSU Royal Prima Medan, knowing the effect of compensation, leadership style and professional competence on the level of turnover intention of employees of RSU Royal Prima Medan. This research is a quantitative descriptive study with a questionnaire instrument conducted with a population of 87 permanent employees, the determination of the sample using a saturated sample so that the research sample is as much as. 87 people. The data analysis technique used is Path Analysis and is supported by Sobel Test calculations. The results of the research analysis show that based on the regression equation model 1 compensation, leadership style, professional competence have a positive and significant influence on employee turnover intention at Royal Prima Hospital Medan. Based on the regression equation model 2, compensation, leadership style, professional competence have a significant effect on turnover intention. Based on the regression equation model 1 and 2 that organizational commitment is able to intervene in the influence of compensation, leadership style and professional competence on the level of employee turnover intention of the Royal Prima General Hospital Medan.
Soil Characterization In Ex-Manganese Mining Land In North-Central Timor District, East Nusa Tenggara
Authors: Tobing Wilda Lumban Tobing , Magdalena Kolo Maria , Bria Deseriana , Putra Purba Mahardika , Maria Paulo Soares Efieno
Published: March 2023

Manganese (Mn) mining in North Central Timor results in open land conditions that can change soil qualities. The aim of this study was to determine physical characteristics and chemical properties of the soil in the ex-manganese mining areas. The study was performed from June – September 2021. Soil characterization was carried out at selected locations where manganese mining was carried out both traditionally and using technology. The soil characteristics measured were texture, water content, bulk density, mass density, porosity, organic matter content, pH, cation exchange capacity (CEC), organic C, total nitrogen (N), total phosphorus (P), total potassium (K), and total Mn. The results showed that the physical characteristics of the soil on ex-Mn mining land from 5 villages in TTU, NTT are dominated by sand texture which results in low water content (3.39 - 9.46 %), soil porosity (14.96 - 59.31 %), and high bulk density (1.18 - 1.49 g cm-3). Characteristics of soil chemical properties showed low pH (< 7), organic matter (0.06 – 0.81%), organic C (0.03 – 0.22 %), total N contents (0.05 – 0.22%), and high total P (14.77 – 61.44 me 100 g-), K (66.66 – 71.18 me 100 g-), and Mn (18.802 – 24.055 ppm) contents. Land must be reclaimed Reclamation can be done by land management, top soil conservation, planting pioneer crops or cover crops.
The Effect Of Product Quality, Price, And Innovation On Marketing Performance Moderated Consumer Purchasing Power In UMKM Of Boba Drinks In Deli Serdang
Authors: Tirtayasa Satria
Published: March 2023

The purpose of this study was to see the effect of product quality, price, and innovation on marketing performance moderated by the purchasing power of consumers in UMKM of Boba Drinks in Deli Serdang. This study uses an associative research approach. The population of this study is all the users of  UMKM in the beverage sector (especially beverage Boba) in the District of Deli Serdang. The population in this research does not know certain, and the sample in this study takes 100 UMKM Boba Drinks based on the Lemeshow formula. Sample of 100 UMKM boba drinks. in the District of Deli Serdang distributed in districts located in urban areas, district Kec. Tanjung Morawa, District.Percut Sei Tuan, District .Sunggal, District. Lubuk Pakam, District. Labuhan Deli. Each city took 20 UMKM  as a sample.

Hypothesis test in this research using regression hierarchy. Based on the results of research product quality affects the marketing performance of UMKm Boba Drinks in Deli Serdang regency. Price affects the marketing performance of B UMKM Boba Drinks in Deli Serdang regency. Innovation affects the marketing performance of UMKM Boba  Drinks in Deli Serdang regency. Purchasing ability can moderate the influence of product quality on the marketing performance of UMKM Boba Drinks in Deli Serdang regency. Purchasing ability can moderate the influence of prices on the marketing performance of UMKM Boba Drinks in Deli Serdang regency. Purchasing ability can moderate the influence of innovation on the marketing performance of  UMKM Boba Drinks in Deli Serdang regency.
The Effect Of Job Pressure, Organizational Commitment And Job Satisfaction On Employee Performance With Motivation As A Moderating Variable In Rsu Royal Prima Medan
Authors: Tarigan Earnasta , Pakpahan Efendy , Romy Elly , Suranta Karo Sekali Abednego
Published: March 2023

This study aims to partially analyze the effect of job pressure, organizational commitment and job satisfaction on the performance of medical employees and non-medical employees at RSU Royal Prima Medan, analyze the moderating motivation to strengthen the effect of job pressure on the performance of medical and non-medical employees, analyze the moderating motivation to strengthen the influence organizational commitment to the performance of medical employees and non-medical employees, analyzing the moderating motivation to strengthen the effect of job satisfaction on the performance of medical employees and non-medical employees of RSU Royal Prima Medan. This study uses a quantitative description of the instrument questionnaire, the population is 692 medical and non-medical people, the sampling technique of probability sampling is calculated using the Slovin formula so that the number of samples is 87 people. The data analysis technique used the instrument quality test, the use of classical assumptions, moderated linear regression, t test (partial) and F test (simultaneous), the coefficient of determination test.
Halal Tourism Model Based On Local Wisdom In Bukit Lawang As One Of The Branding Efforts Towards Excellent Primadona North Sumatra
Authors: Harianja Pantun
Published: March 2023

The purpose of this research is to find a model of amenity formulation, word of mounth and halal knowledge on halal tourism brand image and tourist satisfaction. The method of analysis in the first year in this study used the approach SEM (Structural Equation Modeling) in building the concept of attractiveness, accessibility and tourism awareness in increasing tourist loyalty through out-of-school education. While in the second year, namely the application of a youth-based out-of-school education model in creating a Tangkahan brand image to be excellent in North Sumatra. The results of the study show that 1) Direct amenity has a positive influence and significant to the brand image in Bukit Lawang. 2) Directly the word of Mount has a positive and insignificant effect on the brand image of Bukit Lawang. 3) Halal knowledge has a positive influence and significant effect on tourist satisfaction in Bukit Lawang. 4) A mentality directly has a positive influence and significant effect on tourist satisfaction in Bukit Lawang. 5) Directly the word of Mount has a positive and insignificant effect on tourist satisfaction in Bukit Lawang. 6) Halal knowledge directly has a positive and positive effect significant effect on tourist satisfaction in Bukit Lawang. 7) Indirectly brand image has a significant role in mediating amenity to tourist satisfaction in Bukit Lawang. 8) Indirectly brand image has a significant role in mediating the word of mounth on tourist satisfaction in Bukit Lawang. 9) Indirectly brand image has a significant role in mediating halal knowledge on tourist satisfaction in Bukit Lawang.
Characteristics Of Kalimantan Community Empowerment To Prevent The Transmission Of Covid-19 In The City Of South Ternate
Authors: A Hi Djafar Monisa
Published: March 2023

Corona virus is a zoonosis (transmitted between animals and humans). Based on scientific evidence, COVID-19 can be transmitted from human to human through coughing/sneezing droplets (droplets). 19 including those treating COVID-19 patients. The purpose of the results of the study was to find out the people of Kalumata to prevent the transmission of covid. The type of research used in this study is quantitative with a Cross Sectional Study design which is one of the observational studies to determine the characteristics of the Kalumata community empowerment to prevent the transmission of COVID-19. Where the research is a Cross Sectional Study, researchers look for characteristics between the independent variable (covid 19 empowerment) and the dependent variable (prevention of transmission) by taking instantaneous measurements. Characteristics of the empowerment of the Kalumata community in preventing the transmission of COVID-19 in the city of South Ternate. The population in this study was the entire number of people who received treatment for COVID-19 patients who carried out examinations at the Kalumata Health Center, South Ternate City, as many as 95 positive COVID-19 patients. The results of the analysis showed that the level of knowledge (62.2%). Compared to the attitude variable (81.8%), compared to the social media variable (94.7%) people know about it compared to Covid sufferers (84.2%). Compared with not suffering that is (15,8%). The conclusion is that it can be suggested because the covid 19 disease is a health problem that occurs without our knowledge, therefore to prevent the transmission of covid 19 to us, it is necessary to have early prevention by preventing various causative factors that trigger triggers that can be controlled, such as public knowledge there is still not enough information about covid 19 so that it can spread to other people.
Analysis of Service Quality at Beauty Salon in Surabaya Using the ServQual Method
Authors: Tjandra Suhatati , Suhartono Andri , Kelvin  , Sharon
Published: March 2023

This research was conducted to analyze and determine service quality and supporting attributes and to find gaps or discrepancies between consumer expectations and perceptions to improve service quality and provide solutions to existing problems. Analysis of service quality is carried out using the Servqual Method (Service Quality), a method used to measure service quality. This Servqual method measures how well a service provided by a company/service is expected to be received. This Servqual method includes 5 Gaps with five attribute dimensions: Tangibles, Responsiveness, Assurance, Reliability, and Empathy. The data needed to analyze is by distributing questionnaires to customers and management.

The results of distributing questionnaires to 27 respondents and the results of the analysis show that there is a gap between consumer expectations and the perceptions received. The most significant gap is in Gap 5 with the PS2 attribute -1.073, with repair solutions ensuring consumers are comfortable by inviting them to choose a comfortable seat. Gap 1 is on the TS1 attribute -0.215, so a solution is provided to ensure the cleanliness of the salon equipment used. Gap 2 is on the PS3 attribute -0.67 and is given a solution namely, staff must rearrange management service standards and ensure staff responds well to customers. Gap 3 on AS4 attributes -0.73 with improvement solutions, namely rearranging good service standards so that the advertisements promoted are appropriate, gap 4 there are two attributes that are not managed to fulfill, namely TS5 and TS6 so that suggestions for improvements were given to install automatic air fresheners in every corner of the room and look for the best internet network provider and increase internet network speed.
Growth, Intellectual Capital, Financial Performance And Firm Value : Evidence From Indonesia Automotive Firms
Authors: Johanda Putri Indah Ayu , Budiyanto Budiyanto , Triyonowati Triyonowati , Ilham Ilham
Published: March 2023

This study analyzes and explains empirical evidence of the effect of growth and Intellectual Capital respectively on financial performance and firm value, as well as the role of Financial Performance in mediating the influence of company growth and Intellectual Capital respectively on firm value. The benefits of this research are expected to be a reference that enriches the literature of Management Science, especially related to signaling theory and Resource Based Theory. In addition, this research is expected to provide benefits for automotive company managers in developing strategies that can improve financial performance and firm value, investors in automotive companies in making the right decisions in investing in automotive companies and the government in formulating policies related to automotive companies so that more investors invest in automotive companies. To test the hypothesis used Partial Least Square (PLS) analysis. The results of the hypothesis test show that: (1) the company's growth has a positive and insignificant effect on financial performance, (2) Intellectual Capital has a positive and significant effect on financial performance, (3) company growth has a positive and insignificant effect on firm value, (4) Intellectual Capital has a positive and insignificant effect on firm value, (5) financial performance has a positive and significant effect on firm value, (6) financial performance does not mediate the company's growth to the company's value and (7) financial performance mediates Intellectual Capital to the value of the company
Risk Management Implementation Strategy And Bank Health Level Assessment In The Framework Of Increasing The Performance of PT. BPR Jatim
Authors: Tjahjono Tjahjono , Budiyanto Budiyanto , Khuzaini Khuzaini
Published: March 2023

BPR JATIM is one of the pilots BPR in the East Java operational area that has good risk management, and has just won the 2nd Best Indonesian Enterprises Risk Management Category: Local Government with assets of over IDR 1 trillion from Economic Review Magazine. This makes PT. BPR JATIM is recognized as one of the best BPRs with good risk management implementation. Therefore, this research was conducted to analyze the quality of risk management implemented by PT. BPR JATIM and to determine the health level of PT. BPR JATIM. Qualitative research with a case study approach is used in this research. Instrumental provisions of Regulation Number 13/POJK.03/2015 and SE OJK No.1/SEOJK.03/2019 concerning Implementation of Risk Management, as well as SK DIR BI No.30/12/KEP/DIR/1997, are used to analyze the implementation of management risks and the bank's ability to improve and maintain its soundness from a financial perspective. The results of this study indicate that PT. It turns out that BPR JATIM has implemented good risk management including credit risk, operational risk, compliance risk, liquidity risk, reputation risk and strategic risk, where all risks have been managed properly. The results of this study also found a link between risk management at PT. BPR JATIM with its financial analysis, where good risk management has also shown a good level of bank soundness as well.
How To Improve Business Performance Of Msmes In The Covid-19 Pandemic Through Knowledge Sharing
Authors: Wijaya Andy , Sisca
Published: March 2023

Micro, Small and Medium Enterprises (MSMEs) are economic drivers in both developed and developing countries, including Indonesia. In an effort to improve the performance of MSMEs, it is necessary to pay attention to the application of knowledge sharing within these MSMEs. The purpose of this study was to analyze the relationship between the application of the knowledge sharing model and the improvement in the performance of MSMEs especially during the Covid-19 Pandemic. The research subjects taken in this study were MSME actors in the food and beverage sector at Pematangsiantar City, totaling 374 MSMEs. The analysis technique used in this study was Structural Equation Modeling (SEM) using the Smart PLS program. The results of this study indicated that the performance of MSMEs increases when the application of knowledge sharing went well, this couldbe seen from the test results which showed that tacit knowledge sharing had a positive and significant effect on marketing performance and explicit knowledge sharing has a positive and significant effect on financial performance. However, it was different from the effect of explicit knowledge sharing on marketing performance which showed a negative and significant influence.
Analysis Leverage to Anticipate The Risk of Financial The National Life Insurance Company
Authors: Nyoman Winata I
Published: March 2023

This study aims to (1) analyze the condition of the application of financial leverage and operational leverage of PT. Asuransi Jiwa XYZ; (2) analyze the impact of the condition of applying financial leverage and operational leverage on the company's financial risk. This research method uses a quantitative descriptive method with a case study approach at PT Asuransi Jiwa XYZ. The type of research data used is secondary data, namely quantitative data in the form of financial report data for 2018-2020 obtained from the company's website. Data analysis techniques are performed by calculating financial leverage ratios and operational leverage, then interpretation is carried out. Then an analysis of the impact of the condition of the company's leverage on its financial risk is carried out. The results achieved are that in general financial leverage and operational leverage indicate poor performance. Meanwhile, the impact of financial leverage and operational leverage on the company's financial risk also indicates poor performance, this is possibly due to the impact of the Covid-19 pandemic which has hit the country and even the whole world. However, data from the previous two years had shown indications of a significant decline in the company's financial performance.
Mapping The Cultural Landscape of Tumori Village, West Gunungsitoli
Authors: Shindi Indira Sri , D. Machmoed Bachtiar , J. Hia Natalia , Supriyadi Supriyadi
Published: March 2023

Tumöri Village is one of nine villages located in West Gunungsitoli District, West Gunungsitoli City, North Sumatra Province. Tumöri Village has various potentials that have not been explored and developed optimally. The natural and cultural resources in the village of Tumöri are hills and forest gardens covering an area of more than 5 hectares, the Mola river flow, beautiful natural scenery, and the presence of 10 traditional Nias houses, along with various other potential cultural arts. For this reason, research is needed to see the potential for natural and cultural tourism, a reference for tourism development in an area like Tourism Villages. Tourism Village includes aspects of developing tourism destinations based on local village wisdom, business development, and tourism industry based on community economy, tourism marketing development, and tourism institutions.