bluuebunny/crossref_metadata_2025 huggingface dataset:
Use of Machine Learning for Continuous Improvement and Handling Multi-Dimensional Data in Service Sector
Authors: Lohit V. Sriram , Mujahid Mohammed Mutahar , Sai Galipally Kushal
Published: November 2022

Machine learning is known as a significant pattern of AI that gives an effective allowance to the software applications to become precise at forecasting outcomes without explicitly programmed in doing that. In addition, machine learning is important as this gives service sectors a suitable view of trends in “business operational patterns” and consumer behaviors. Service sectors are mainly known as the healthcare sectors, tourism sectors, and transportation sectors. In several developed countries, AI is maximizing labor productivity by more than 30% in the coming 15 years. The requirement of showing the usage of machine learning and the way it handles the multi-dimensional data have also been shown in this entire work. Machine learning shows some ways through that it helps in providing improvement to all the service sectors such as enhancing consumer analytics, giving rapid and effective assistance, providing effective personalization, identifying the fraud cases and also enhancing customer experiences. Though, in this research work it has been highlighted that, in terms of implementing ML in service sectors, service sectors are facing several challenges. Moreover, in terms of showing the effectiveness of ML two algorithms with flowcharts have been shown in this work. On the other hand, in this research work, a secondary data collection method has been utilized and a qualitative data analysis method has also been used in this research work. In addition, secondary data resources have been assembled from books, scholarly articles, journals, and newspapers. Index Terms : Machine learning, secondary data resources, AI, Service sectors.
A User Portrait of Express Software Based on Full Life Cycle Data
Authors:   Modern postal College, Nanjing University of Posts and Telecommunications, Nanjing, China., Zhao Xuejian , Zhao Ke ,   Modern postal College, Nanjing University of Posts and Telecommunications, Nanjing, China., Qiang Yimin ,   Modern postal College, Nanjing University of Posts and Telecommunications, Nanjing, China.
Published: November 2022

With the rapid development of traditional express industry, it is of great significance to study the portrait of express users. The express industry can realize the industrial transformation and upgrading by means of the express customer portrait. However, the research on the user portrait of express delivery is still scarce, at present. In this paper, a user portrait model based on life cycle data is proposed, which comprehensively describes the behavior preferences of users through multi-dimensional feature vectors. The model takes into account the basic attributes, preference attributes and feedback attributes of users, and uses the idea of classification before clustering to realize the segmentation of express users. In the classification stage, this paper fuses the K-means and the Support vector machine algorithm, adds the preference coefficient, and designs a new objective function to complete the user classification. In the process of clustering, we follow the idea of density-based peak clustering, combine the characteristic attributes of the multidimensional data of express users, add the characteristic coefficient, modify the index calculation formula in the model, and complete the clustering of express users. The simulation data show that the user portrait model proposed in this paper can achieve better segmentation of courier users, with better accuracy and timeliness.
Adaptive hybrid modeling method based on CV-Hypercube
Authors:   College of Sciences, Huazhong Agricultural University, Wuhan , China, Xiao Meimei , Xie Xuelin ,   College of Sciences, Huazhong Agricultural University, Wuhan , China, Shen Jingfang ,   College of Sciences, Huazhong Agricultural University, Wuhan , China, Li Yaohui ,   College of Sciences, Huazhong Agricultural University, Wuhan , China
Published: November 2022

As common surrogate models, Kriging and RBF models have been widely used in various fields. Although the Kriging model and the RBF model have their own advantages, when the problems are complex and diverse, a single Kriging or RBF model usually cannot meet the requirements of global approximation. Luckily, the Kriging and the RBF model have good complementarity in performance. In view of this, an adaptive hybrid modeling method (AHM-CVH) based on cross-validation hypercube of Kriging and RBF is proposed in this paper. The CVH adaptive sampling strategy first generates a hypercube centered on the sample point with the largest cross-validation error, then candidate points are randomly sampled in the hypercube, and finally get a new sample point which is farthest from the center and surrounding samples. Eight benchmark functions ranging from 2 to 6 dimensions and an engineering example are validated, and the results show that the AHM-CVH method is superior to the single Kriging or RBF models in performance, and has the characteristics of high accuracy and strong stability.
Applying Spatial Techniques in Understanding Evolution and Accessibility of Cultural Facilities based on Multi-Source Data: A Case Study in Xiamen, China
Authors:   School of Journalism and Communication, Xiamen University, Xiamen, China., Liang Limin , Wu Yue ,   School of Mathematical Sciences, Queen Mary University of London, UK., Chu Jian ,   School of Arts and Media, Suqian University, Suqian, China.
Published: November 2022

Cultural facility is a kind of public facilities that can improve residents’ education, ensure local cultural inheritance, and promote cultural exchanges. Well-planned construction of cultural facilities can promote sustainable development and avoid wasting resources. Xiamen, a coastal city with uneven development, is focused on this study. The time-space evolution of cultural facilities in Xiamen is studied by collecting total number of 34461 POI data, 229071 street data. With help of multi-source data and ArcGIS software, cultural facilities’ distribution and accessibility are visualized and analysed as the standard deviation ellipse, kernel density analysis diagram and accessibility classification diagram. The results show that the construction of cultural facilities in Xiamen is mainly concentrated on the island and other coastal areas. The growth rate of construction was declined by 48.1% over the period. The unequal distribution of cultural facilities has increased over the past eight years. The accessibility of cultural facilities increased in 2016 and worsened in 2022. This is due to the government's emphasis on tourists and lack of attention to residents who lives in industrial areas. To improve equity of residents, strengthen on the construction of cultural facilities in Xiamen industrial zone is required.
ANTIBACTERIAL ACTIVITY OF SILVER NANOPARTICLES SYNTHESIZED USING ELEUSINE INDICA (L.) GAERTN. LEAF EXTRACT ON THE BACTERIA ISOLATED FROM THE VASE SOLUTION
Authors: Le Thi Anh Tu
Published: November 2022

Green synthesis of silver nanoparticles (SNPs) using Eleusine indica (L.) Gaertn. leaf extract as a reducing agent is reported. SNPs were characterized with UV-Vis spectroscopy and transmission electron microscopy (TEM). The SNPs were rod like and spherical in shape with sizes from 3 to 33 nm and an average size of 16.73 nm. Seven bacterial strains were isolated from the vase water, including Bacillus cereus CA1, Alcaligenes faecalis CA2, Micrococcus luteus CA3, Pantoe agglomerans CA4, Pseudomonas aeruginosa CA5, Pseudomonas aeruginosa CA6, and Pantoe agglomerans CA7. Identifications were made according to Bergey’s Manual of Systematic Bacteriology and Bergey’s Manual of Determinative Bacteriology. The SNPs inhibited the growth of bacteria and exhibited significant antimicrobial activity against different isolated bacteria strains. SEM images showed that the SNPs damaged the cell membranes of bacteria, released plasmic contents, and altered the morphology of the cells. The impact of SNPs on gram-negative bacteria was more severe than on gram-positive bacteria. This study revealed that biosynthesized SNPs from Eleusine indica (L.) Gaertn. leaf extract are potential agents in combating bacterial contamination.
The Aluminum Abundance of HD 209459 from Far Ultraviolet and Optical Spectra
Authors: Monier Richard
Published: November 2022

The abundance of aluminum in the atmosphere of HD 209459 is measured by synthesizing selected optical and ultraviolet lines having high quality atomic data. The Al iii resonance lines at 1854.12 and 1862.79 Å are reproduced by an aluminum underabundance of about 0.3 times the solar aluminum abundance. The Al ii line at 4663.06 Å is properly fit by a solar aluminum abundance. This difference needs confirmation by the modeling of more lines in both spectral regions.
Role of MicroRNAs in the Development of Chronic Liver Disease in Hepatitis Virus-Infected Egyptian Population
Authors: Hassan Marwa , El-Ahwany Eman , Elzallat Mohamed , Rahim Ali Abdel , Abu-Taleb Hoda , Abdelrahman Yosry , Hassanein Moataz
Published: November 2022

Background:  The identification of miRNAs that play a role in the regulation of the viral life cycle and its related liver illness opens the door to the development of diagnostic biomarkers that can categorize patients at higher risk for developing end-stage liver disease. This study was designed to investigate the role of miRNAs in the development of viral hepatitis-induced chronic liver disease (CLD) in the Egyptian population, as well as their potential as possible diagnostic biomarkers for chronic hepatitis virus infection.
Methodology: The study involved 100 CLD patients; 55 cases of hepatitis C virus (HCV) and 45 cases of non-viral hepatitis, in addition to 40 healthy controls. The expression of five miRNAs (miR‐30, miR‐122, miR‐296, miR‐351, and miR‐431) was assessed using real-time PCR.
Results: Serum levels of miR‐30, miR‐122, miR‐296, miR‐351, and miR‐431 were significantly higher in all patients than the control group (p<0.01). Also, they were significantly greater in viral hepatitis cases compared to the non-viral hepatitis group (p<0.01). The sensitivities and specificities of miR-122a, miR‐30, miR‐296, miR‐351, and miR‐431 were (85.71%, 83.33%), (82.35%, 83.33%), (85.71%, 69.44%), (88.64%, 75.76%), and (87.80%, 65.79%), respectively.
Conclusions: miR‐30, miR‐122, miR‐296, miR‐351, and miR‐431 play key roles in the development of CLD as a consequence of viral infection. So, they have the potential to be targeted for the early detection of chronic hepatitis virus infection and allow for exploring a new frontier in the discovery of innovative therapeutics to combat chronic viral infection and its serious life-threatening complications including liver cancer.
Protection against SARS-CoV-2 BA.4 and BA.5 subvariants via vaccination and natural infection: A modeling study
Authors: Okada Yuta , Kayano Taishi , Anzai Asami , Zhang Tong , Nishiura Hiroshi
Published: November 2022

With continuing emergence of new SARS-CoV-2 variants, understanding the proportion of the population protected against infection is crucial for public health risk assessment and decision-making and so that the general public can take preventive measures. We aimed to estimate the protection against symptomatic illness caused by SARS-CoV-2 Omicron variants BA.4 and BA.5 elicited by vaccination against and natural infection with other SARS-CoV-2 Omicron subvariants. We used a logistic model to define the protection rate against symptomatic infection caused by BA.1 and BA.2 as a function of neutralizing antibody titer values. Applying the quantified relationships to BA.4 and BA.5 using two different methods, the estimated protection rate against BA.4 and BA.5 was 11.3% (95% confidence interval [CI]: 0.01–25.4) (method 1) and 12.9% (95% CI: 8.8–18.0) (method 2) at 6 months after a second dose of BNT162b2 vaccine, 44.3% (95% CI: 20.0–59.3) (method 1) and 47.3% (95% CI: 34.1–60.6) (method 2) at 2 weeks after a third BNT162b2 dose, and 52.3% (95% CI: 25.1–69.2) (method 1) and 54.9% (95% CI: 37.6–71.4) (method 2) during the convalescent phase after infection with BA.1 and BA.2, respectively. Our study indicates that the protection rate against BA.4 and BA.5 are significantly lower compared with those against previous variants and may lead to substantial morbidity, and overall estimates were consistent with empirical reports. Our simple yet practical models enable prompt assessment of public health impacts posed by new SARS-CoV-2 variants using small sample-size neutralization titer data to support public health decisions in urgent situations.
Fabricación de agregados ligeros a partir de pizarras esponjadas
Authors: Mocine D.
Published: November 2022

No disponible
The control of efflorescence in colored concreto products
Authors: Moore C.W.
Published: November 2022

No disponible
La flotación y la industria del cemento. II - Proceso de separación de minerales utilizado por la Lone Star's New Argentina Plant
Authors: Soria Santamaria F.
Published: November 2022

No disponible
La mécanistation des exploitations d'argile
Authors: Vié G.
Published: November 2022

No disponible
Peroxisomal Fitness: A Potential Protective Mechanism of Fenofibrate against High Fat Diet-Induced Non-Alcoholic Fatty Liver Disease in Mice
Authors: Jiang Songling , Uddin Md Jamal , Yu Xiaoying , Piao Lingjuan , Dorotea Debra , Oh Goo Taeg , Ha Hunjoo
Published: November 2022

Background: Non-alcoholic fatty liver disease (NAFLD) has been increasing in association with the epidemic of obesity and diabetes. Peroxisomes are single membrane-enclosed organelles that play a role in the metabolism of lipid and reactive oxygen species. The present study examined the role of peroxisomes in high-fat diet (HFD)-induced NAFLD using fenofibrate, a peroxisome proliferator-activated receptor α (PPARα) agonist.Methods: Eight-week-old male C57BL/6J mice were fed either a normal diet or HFD for 12 weeks, and fenofibrate (50 mg/kg/day) was orally administered along with the initiation of HFD.Results: HFD-induced liver injury as measured by increased alanine aminotransferase, inflammation, oxidative stress, and lipid accumulation was effectively prevented by fenofibrate. Fenofibrate significantly increased the expression of peroxisomal genes and proteins involved in peroxisomal biogenesis and function. HFD-induced attenuation of peroxisomal fatty acid oxidation was also significantly restored by fenofibrate, demonstrating the functional significance of peroxisomal fatty acid oxidation. In Ppara deficient mice, fenofibrate failed to maintain peroxisomal biogenesis and function in HFD-induced liver injury.Conclusion: The present data highlight the importance of PPARα-mediated peroxisomal fitness in the protective effect of fenofibrate against NAFLD.
Screening for Prediabetes and Diabetes in Korean Nonpregnant Adults: A Position Statement of the Korean Diabetes Association, 2022
Authors: Lee Kyung Ae , Kim Dae Jung , Han Kyungdo , Chon Suk , Moon Min Kyong ,   on Behalf of the Committee of Clinical Practice Guideline of Korean Diabetes Association
Published: November 2022

Diabetes screening serves to identify individuals at high-risk for diabetes who have not yet developed symptoms and to diagnose diabetes at an early stage. Globally, the prevalence of diabetes is rapidly increasing. Furthermore, obesity and/or abdominal obesity, which are major risk factors for type 2 diabetes mellitus (T2DM), are progressively increasing, particularly among young adults. Many patients with T2DM are asymptomatic and can accompany various complications at the time of diagnosis, as well as chronic complications develop as the duration of diabetes increases. Thus, proper screening and early diagnosis are essential for diabetes care. Based on reports on the changing epidemiology of diabetes and obesity in Korea, as well as growing evidence from new national cohort studies on diabetes screening, the Korean Diabetes Association has updated its clinical practice recommendations regarding T2DM screening. Diabetes screening is now recommended in adults aged ≥35 years regardless of the presence of risk factors, and in all adults (aged ≥19) with any of the risk factors. Abdominal obesity based on waist circumference (men ≥90 cm, women ≥85 cm) was added to the list of risk factors.
Clinical overview of venous thromboembolism
Authors: Schellack Gustav , Modau Tumelo , Schellack Natalie
Published: November 2022

Venous thromboembolism (VTE) encompasses two vascular conditions that are of significant importance, namely deep vein thrombosis (DVT) and pulmonary embolism (PE). DVT is also the most common cause of PE. Medical and surgical patients, and individuals who are at increased risk of developing VTE through a variety of factors, require adequate thromboprophylaxis. Primary and secondary prevention, as well as the definitive treatment of VTE, are accomplished through the use of a variety of anticoagulant drugs. This article attempts to provide an overview of VTE, and its prevention and treatment.
Fabrication of cartilage tissue substitutes from cells with induced pluripotency
Authors: Eremeev AV , Pikina AS , Ruchko ES , Sidorov VS , Ragozin AO
Published: November 2022

One of the approaches to cartilage tissue restoration problem relies on cellular technologies that use iPSCs, induced pluripotency stem cells that are an unlimited source of cellular material for tissue engineering with significant differentiation potential. However, there are no standardized protocols for chondrogenic differentiation of iPSCs. This study aimed to make cartilage tissue samples using 3D spheroid cultures and following four chondrogenic differentiation protocols, then compare characteristics of the cartilage samples made under different protocols and isolate the most effective way of differentiation. The iPSCs were differentiated chondrogenically, the four protocols were "long", "short", "combined" and with conditioned medium from a primary culture of autologous chondrocytes; the combinations of TGFβ1, BMP2, Chir 99021, and PK factors varied. Microwell plates were used to make spheroids. Immunocytochemical staining, real-time PCR and histological staining enabled assessment of the synthesis and expression profiles. High rates of synthesis and expression of chondrogenic markers Sox9, aggrecan, type II collagen were observed in spheroids experimented with under the "long", "combined" protocols and the conditioned medium protocol. The "combined" differentiation protocol made chondrogenesis most effective, and conditioned medium was highly efficient in inducing and supporting chondrogenic differentiation.
Exploring the relationship between L2 writing self-efficacy and language proficiency level
Authors: DEMİRKOL Tuba , DEMİRÖZ Hakan
Published: November 2022

This study aims to explore if EFL learners’ self-efficacy perceptions of their L2 writing performance vary by proficiency level. As the research design, the quantitative method was employed and a questionnaire measuring EFL learners’ L2 writing self-efficacy on a Likert scale was used as the data collection instrument. The participants were EFL students (n=47) enrolled in the preparatory program of an English-medium instruction state university in Türkiye. Data analysis showed that there was a positive correlation between the participants’ proficiency level and their perceptions of L2 writing self-efficacy. The findings indicate that EFL students develop a more positive attitude towards L2 writing as they progress in language mastery and the preparatory programs appear to be feeding into the appearance of this positive perception. Nevertheless, some points among which idea production represents the biggest concern continue to be an issue deserving much attention across the levels. This finding suggests that L2 writing training should be enhanced with strategies as well as activities that can assist students in producing ideas on given topics.
Impact of Self-Help Group – Sanjeevini in Empowerment of Women in Rural Area of Bajpe, Mangalore Taluk - A Case Study
Authors: M. K. Nikhitha , Neermarga Prabhakar
Published: November 2022

Purpose: In the context of women’s development, the purpose of this study is to define, challenge, and overcome barriers in a woman’s life so that she can better design her life. This paper paints through a picture of SHG’s achievements in empowering women. Women are the participants and decision makers in democratic, economic, and social realms of life are achieved by Self Help Group (SHG) members. This article also discusses some of the steps that should be followed to ensure that SHG is implemented effectively.
Design/Methodology/Approach: The study is based on the primary and secondary data collected through fieldwork and referring to publications, websites and other related sources. The materials are gathered from publications of NABARD and other governmental agencies which have advocated for women’s empowerment. Action is also taken to refer to the various reports and services done by various government and private agencies. The primary data is collected from field visits by meeting various people involved in SHG and also meeting Panchayath officials.
Findings: The study helps us to know that savings habits have improved among the members of SHG. According to the study, SHG’s microfinance intervention raised the level of income and assets of rural women, while poverty reduced.
Originality/Value: This study has social and economic implications since it shows the importance of SHGs in women’s growth in terms of productive involvement and financial contribution to the family.
Paper Type: Case Study
South American 2020 regional smoke plume: intercomparison with previous years, impact on solar radiation, and the role of Pantanal biomass burning season
Authors: Rosário Nilton Évora do , Sena Elisa Thomé , Yamasoe Marcia Akemi
Published: November 2022

Abstract. The 2020 biomass burning season in Brazil was marked by an atypical amount of fire across the Pantanal biome, which led to high levels of smoke within the biome and downwind areas. The present study analyzes fire counts and smoke over Pantanal in 2020, comparing this particular year's data with those from the previous 17 years (2003–2019). Taking as reference the most-polluted years in this period, the regional smoke plume and its impact on surface solar radiation were also evaluated. In 2020, the regional smoke plume core covered an area of ∼ 2.6×106 km2 at the peak of the burning season, an area well above that of the previous 6 years but smaller than areas observed in a more remote past, as in 2007 and 2010 (> 5.0×106 km2). The smoke loading was lower (mean aerosol optical depth, AOD, of 550 nm; ∼ 0.7) than that of 2007 and 2010 (mean AOD 550 nm; ∼ 1.0). The plume radiation absorption efficiency, when compared with the previous year's plumes, did not present significant differences. Regarding the Pantanal burning season, it revealed some atypical features. Fire counts were up to 3.0 times higher than for the years from 2003 to 2019. Smoke loading over Pantanal, which is typically a fraction of that over Amazonia, was higher in 2020 than that over Amazonia, an indication that local smoke surpassed the smoke advection from upwind regions. The observed intraseasonal variability in smoke over Pantanal revealed to be largely driven by the nature of the burned areas in the biome. From September on, there was a significant increase in fire count in conservation and indigenous areas, where higher biomass density is present, which would explain the larger smoke plumes over Pantanal, even during October when the fire count was reduced. In October, the biome was covered by a thick smoke layer, which resulted in a mean deficit of surface solar radiation up to 200 W m−2. Despite the Pantanal biomes' massive burning in 2020, the regional smoke plume was not far from its climatological features. Nevertheless, the Pantanal 2020 burning season represents the worst combination of a climate extreme applied to a fire-prone environment, coupled with inadequately enforced environmental regulations, from which there is much to be learned.
Updated merged SAGE - CCI- OMPS+ dataset for evaluation of ozone trends in the stratosphere
Authors: Sofieva Viktoria F. , Szelag Monika , Tamminen Johanna , Arosio Carlo , Rozanov Alexei , Weber Mark , Degenstein Doug , Bourassa Adam , Zawada Daniel , Kiefer Michael , Laeng Alexandra , Walker Kaley A. , Sheese Patrick , Hubert Daan , van Roozendael Michel , Retscher Christian , Damadeo Robert , Lumpe Jerry D.
Published: November 2022

Abstract. In this paper, we present the updated SAGE-CCI-OMPS+ climate data record of monthly zonal mean ozone profiles. This dataset covers the stratosphere and combines measurements by 9 limb and occultation satellite instruments – SAGE II, OSIRIS, MIPAS, SCIAMACHY, GOMOS, ACE-FTS, OMPS-LP, POAM III and SAGE III/ISS. Compared to the original version of the SAGE-CCI-OMPS dataset (Sofieva et al., 2017), the update includes new versions of MIPAS, ACE-FTS, and OSIRIS datasets, and introduces data from additional sensors (POAM III, SAGE III/ISS) and retrieval processors (OMPS-LP). In the paper, we show detailed intercomparisons of ozone profiles from different instruments and data versions, with a focus on the detection of possible drifts in the datasets. The SAGE-CCI-OMPS+ dataset has a better coverage of polar regions and of the upper troposphere and the lower stratosphere (UTLS) than the SAGE-CCI-OMPS dataset. We also studied the influence of including new datasets on ozone trends, which are estimated using multiple linear regression. The changes in the merged dataset do not change the overall morphology of post-1997 ozone trends: statistically significant trends are observed in the upper stratosphere. The largest changes in ozone trends are observed in polar regions, especially in the Southern Hemisphere. The updated SAGE-CCI-OMPS+ dataset contains profiles of deseasonalized anomalies and ozone concentrations from 1984 to 2021, in 10° latitude bins from 90° S to 90° N, and in the altitude range from 10 km to 50 km. The dataset is in open access at https://climate.esa.int/en/projects/ozone/data/ and at ftp://cci_web@ftp-ae.oma.be/esacci (ESA Climate Office, last access: 10 August 2022).
Relationship of seasonal variations in drip water δ13CDIC, δ18O and trace elements with surface and physical cave conditions of La Vallina Cave, NW Spain
Authors: Kost Oliver , González-Lemos Saul , Rodriguez-Rodriguez Laura , Sliwinski Jakub , Endres Laura , Haghipour Negar , Stoll Heather
Published: November 2022

Abstract. Cave monitoring studies clarify the climatic, surface vegetation, and karst processes affecting the cave system and lay the foundation to interpreting geochemical stalagmite records. Here we report monitoring of cave air, bedrock chemistry, and drip water δ13CDIC, δ18O and δD as well as 16 trace elements covering a full annual cycle spanning 16 months between November 2019 and March 2021 in La Vallina cave in the Northwest Iberian Peninsula. While decreased rainfall and increased evapotranspiration in summer months lead to a strong reduction in drip rates, there is little seasonal variation of δ18O and δD in a given drip, likely reflecting discrete moderately- to well-mixed karst water reservoirs. Small differences in δ18O and δD between drip sites are attributed to variable evaporation intensity and/or transit times. The dissolved inorganic carbon composition of drip water (δ13CDIC) is likely driven by seasonal changes in temperature controlling biological processes (vegetation and microbial soil activity) resulting in minimum δ13CDIC in summer and autumn months. Increased bedrock dissolution due to higher soil pCO2 in summer and autumn results in increased trace element concentrations of congruently dissolved elements. Cave air measurements indicate seasonal ventilation (winter) and stagnation (summer) of cave air. The opposite effects of reduced cave air pCO2, seasonally variable biological activity and increased drip rate limit the extent of seasonal variation of degassing and prior calcite precipitation (PCP) supported by trace elements (Sr/Ca-index). Estimated stalagmite growth rates using monitoring data suggest calcite precipitation is restricted to certain seasons (summer and winter) at certain locations within the cave, which has important implications on proxy interpretation of stalagmite records.
Tingkat Pertumbuhan dan Kelangsungan Hidup Benih Ikan Gabus ( Chana striata Blkr ) dengan Frekuensi Pemberian Pakan Buatan
Authors: Syahruddin Syahruddin
Published: November 2022

Penelitian ini bertujuan untuk mengetahui pengaruh tingkat pertumbuhan dan kelangsungan hidup ikan gabus dengan frekuensi pemberian pakan buatan.  Penelitan ini dilaksanakan di Hatchery air tawar Politeknik Pertanian Negeri Pangkep.  Hewan uji yang digunakan dalam penelitian ini adalah benih ikan gabus.  Peubah yang diamati adalah pertumbuhan dan tingkat kelangsungan hidup.  Rancangan Percobaan yang digunakan adalah rancangan acak lengkap (RAL) yang terdiri dari 3perlakuan 3 ulangan. Data dianalisis dengan menggunakan analisis ragam dan uji tukey digunakan untuk mengetahui perbedaan antar perlakuan. Hasil penelitian menunjukkan bahwa Perlakuan frekuensi pemberian pakan tidak memberikan pengaruh yang nyata terhadap sintasan benih, pertumbuhan panjang dan bobot tubuh  benih ikan gabus, Pemberian pakan dengan frekwensi 3 kali sehari menghasilkan sintasan yang tinggi, sementara pertumbuhan panjang spesifik pada pemberian pakan dengan frekuensi 4 kali dan pertumbuhan panjang mutlak pada pemberian pakan dengan frekuensi 5 kali. Pertumbuhan berat spesifik pada pemberian pakan dengan frekwensi 4 kali dan bobot tubuh mutlak pada pemberian pakan dengan frekwensi 4 kali.   Parameter kualitas air yang didapatkan selama penelitian tetap mendukung sintasan,  pertumbuhan panjang dan pertumbuhan berat  benih ikan gabus.
Kondisi Tutupan Karang Perairan Kepulauan Tanakeke Kabupaten Takalar
Authors: Wulandari Sri , Nursyahran Nursyahran , Hidayani Mesalina Tri , Nurwina Nurwina
Published: November 2022

Terumbu karang mempunyai nilai dan arti yang sangat penting dari segi sosial, ekonomi maupun budaya, pemantauan tutupan terumbu karang penting dilakukan untuk mengetahui tingkat kesehatan ekosistem karang tujuan pengelolaan. Tanakeke merupakan salah satu gugusan kepulauan sebagian besar perairannya dikelilingi oleh ekosistem terumbu karang yang dimanfaatkan oleh nelayan sebagai area Fishing Ground  untuk menangkap ikan dan sebagai alur pelayaran transportasi kapal. Namun beberapa penelitian yang telah terpublikasikan sebelumnya lebih fokus pada komunitas ikan di sekitar terumbu karang. Penelitian ini bertujuan untuk mengetahui kondisi tutupan karang dengan menggunakan Metode Point Intercept Transect (PIT), metode ini merupakan salah satu metode yang dikembangkan untuk memantau kondisi karang hidup dengan cara menghitung persen tutupan substrat dasar secara acak. Penelitian ini dilakukan pada Bulan Oktober 2021. Hasil penelitian menunjukkan bahwa ekosistem terumbu karang yang berada di Perairan Kepulauan Tanakeke khususnya di sebelah timur-timur laut, di sebelah barat laut, dan di sebelah timur laut Kecamatan Kepulauan tergolong karang rusak, karang baik, dan karang sedang. Pada stasiun 1, tutupan karang jenis Acropora sebesar 18% dan tutupan karang jenis Non-Acropora sebesar 22%.  Pada stasiun 2, tutupan karang jenis Acropora sebesar 70% dan tutupan karang jenis Non-Acropora sebesar 18%.  Sedangkan pada stasiun 3, tutupan karang jenis Acropora sebesar 28% dan tutupan karang jenis Non-Acropora sebesar 48%.
Pengaruh Profitabilitas dan Leverage pada Pajak Penghasilan Badan di Perusahaan Manufaktur 2020
Authors: Handayani Nur Fitri , Kholis Nur
Published: November 2022

Pajak berperan sebagai sumber pendapatan terbesar negara. pajak penghasilan badan merupakan penyumbang terbesar terlebih dari sektor manufaktur. profitabilitas tak lepas dari pph badan. mengingat pph badan dihitung berdasarkan omzet perusahaan, dan beban pajak berfungsi sebagai pengurang laba bersih. leverage juga memiliki hubungan erat dengan pajak, dengan timbulnya beban bunga yang juga menjadi faktor pengurang pajak. maka diasumsikan adanya leverage dapat meningkatkan profitabilitas dan menekan pph badan. penelitian ini bertujuan membuktikan pengaruh tersebut. Dengan menggunakan perusahaan manufaktur terdaftar di BEI selama 2020 sebagai populasi. penelitian ini memilih 103 laporan keuangan dengan teknik purposif sampel. Dengan menggunakan analisis regresi linear berganda, diperoleh hasil net profit margin, return on assets, debt to assets ratio dan debt to equity ratio berpengaruh secara parsial terhadap pph badan.
Pengaruh Profitabilitas, Leverage, Good Corporate Governance, dan Ukuran Perusahaan terhadap Nilai Perusahaan
Authors: Nugraha Andra Galang , Maulid Taufik , Falah Syaikhul , Pangayouw Bill J.C
Published: November 2022

Penelitian ini dilakukan untuk menguji pengaruh Profitabilitas, leverage, good corporate governance dan ukuran perusahaan terhadap nilai perusahaan Pada Perusahaan yang Terdaftar Pada Bursa Efek Indonesia (BEI) Yang Memiliki Skor Corporate Governance Preception Index (CGPI) Selama Periode 2015 hingga 2017.Teknik pengambilan sampel yang digunakan adalah pusposive sampling dan jumlah sampel yang digunakan sebanyak 10 perusahaan. Data diperoleh dari publikasi Bursa Efek Indonesia (BEI) 2015 - 2017. Teknik analisis yang digunakan adalah analisis regresi berganda.Hasil penelitian ini menunjukan bahwa secara simultan profitabilitas, leverage, good corporate governance dan ukuran perusahaan berpengaruh terhadap nilai perusahaan. Secara parsial profitabilitas, leverage dan good corporate governance tidak berpengaruh terhadap nilai perusahaan, sedangkan ukuran perusahaan berpengaruh terhadap nilai perusahaan
Analisis Rasio Keuangan pada Perusahaan Manufaktur yang Terdaftar di Bursa Efek Indonesia Sebelum dan Semasa Covid-19
Authors: Numberi Karlin Novyandi , Siahay Adolf Z. D. , Allo Layuk Paulus Kombo , Matani Cornelia Desiani
Published: November 2022

Kasus covid-19 pertama kali di Indonesia diumumkan pada 2 Maret 2020. Penelitian ini bertujuan untuk mengetahui apakah terjadi perbedaan yang signifikan pada rasio keuangan karena adanya pandemi covid-19 (studi kasus pada perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia tahun 2019 dan tahun 2020). Data diolah dengan paired sample t-tes, dengan menggunakan SPSS versi 16.0. Dari hasil pengolah data, menunjukkan Tidak Terdapat Perbedaan Signifikan Rasio Keuangan Berupa Rasio Likuiditas Perusahaan Manufaktur Yang Terdaftar Di BEI Sebelum dan Semasa Covid-19, Tidak Terdapat Perbedaan Signifikan Rasio Keuangan Berupa Rasio Profitabilitas Perusahaan Manufaktur Yang Terdaftar Di BEI Sebelum dan Semasa Covid-19, Tidak Terdapat Perbedaan Signifikan Rasio Keuangan Berupa Rasio Solvabilitas Perusahaan Manufaktur Yang Terdaftar Di BEI Sebelum dan Semasa Covid-19.
La dimensión experiencial y emocional en el conocimiento actualizado del patrimonio tras los Giros Cultural y Afectivo. Su transferencia a la caracterización tangible de la arquitectura
Authors: Loren-Méndez Mar , Rodríguez-Segura Adrián , Galán-Conde José M.
Published: November 2022

El conocimiento del entorno a través de la integración del componente experiencial-emocional con el racional ha sido abordado desde el pasado siglo por disciplinas diversas. Avalada desde la neurociencia, dicha integración es de relevancia en la concepción actualizada del patrimonio: desde la valoración experta y ‘científica’ del objeto, pasando por la experiencia subjetiva del lugar táctil y tradicional, hasta la reciente incorporación de lo emocional en la interacción de la comunidad.
Centrándonos en la arquitectura, y aunque su particularidad de estar físicamente en nuestro espacio y tiempo ha provocado que dicho componente haya sido abordado por disciplinas dedicadas al entorno, su marco ideológico nunca se ha revisitado en clave patrimonial. Este artículo tiene como objetivo mostrar su abordaje desde las disciplinas dedicadas al entorno, estableciendo un diálogo con la incursión de lo experiencial, emocional y afectivo en la valoración patrimonial: el Giro Cultural de los sesenta y el más reciente Giro Afectivo contextualizan su alcance en las Convenciones y Cartas UNESCO, revisitando las metodologías desarrolladas por ambos Giros desde una mirada patrimonial. La prevalencia en su identificación actual con el patrimonio intangible, desemboca finalmente en la necesidad de su incorporación a la caracterización del patrimonio tangible y su reto metodológico.
Hubungan Kehamilan Kembar dan Polihidramnion dengan Kejadian lilitan Tali Pusat di RSUD H.Abdul Manap Kota Jambi
Authors: Haryanti Dwi , Inayah Wulan
Published: November 2022

Menurut WHO (World Health Organization) pada tahun 2018 Angka Kematian bayi

(AKB) di dunia yaitu 289 per 100.000 persalinan dengan lilitan tali pusat. Lilitan tali

pusat dikarenakan beberapa faktor salah satunya yaitu kehamilan kembar dan

polihidramnion. Penelitian ini bertujuan untuk mengetahui hubungan kehamilan kembar

dan polihidramnion dengan kejadian lilitan tali pusat.Penelitian ini merupakan rancangan

case control dengan pendekatan retrospektif. Populasi pada peneltian ini adalah semua

ibu bersalin dengan lilitan tali pusat sebanyak 32 responden dan populasi kontrol yaitu

ibu bersalin yang tidak mengalai lilitan tali pusat sebanyak 32 responden dengan teknik

total sampling. Instrumen yang digunakan adalah lembar ceklist. Teknik analisis data

yang digunakan dalam penelitian ini adalah analisis univariat dan bivariat menggunakan

uji Chi-Square.Hasil penelitian menunjukkan bahwa terdapat hubungan antara kehamilan

kembar (p=0,016 & OR=12,13) dan polihidramnion (p=0,000 & OR=7,667) dengan

kejadian lilitan tali pusat di RSUD H.Abdul Manap Kota Jambi Tahun 2022
Faktor-faktor yang berhubungan dengan kejadian rupture perineum pada persalinan normal
Authors: Mariana Silvia , Wati Eka Fajar
Published: November 2022

Terdapat 2,7 juta kasus rupture perineum di dunia pada ibu bersalin, dimana

angka ini diperkirakan akan mencapai 6,3 juta pada tahun 2050 (Kurniawan, 2020).

Menurut Kemenkes (2018), rupture perineum merupakan penyebab kedua tersering

dari perdarahan pasca persalinan setelah atonia uteri. Rupture perineum merupakan

perlukaan jalan lahir yang terjadi pada saat kelahiran bayi baik menggunakan alat

maupun tidak menggunakan alat. Akibat langsung dari rupture perineum adalah dapat

terjadi perdarahan. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang

berhubungan dengan kejadian rupture perineum pada persalinan normal di PMB

Azimah A.Md.Keb Kota Jambi. Metode penelitian yang digunakan adalah survei

analitik dengan pendekatan retrospektif. Populasi pada penelitian ini adalah ibu

bersalin normal pada bulan Januari sampai Desember tahun 2021 di PMB Azimah

A.Md.Keb yang berjumlah 142 orang. Teknik pengambilan sampel dengan teknik total

sampling 142 orang. Analisa data menggunakan uji Pearson Chi-Square. Hasil

penelitian diperoleh nilai p=0,063 (p > 0,05) untuk umur ibu, p=0,000 (p < 0,05) untuk

paritas, dan p=0,332 (p > 0,05) untuk berat bayi lahir. Kesimpulan penelitian ini adalah

ada hubungan antara paritas dengan kejadian rupture perineum pada persalinan normal

di PMB Azimah A.Md.Keb Kota Jambi dan tidak ada hubungan antara umur ibu dan

berat bayi lahir dengan kejadian rupture perineum pada persalinan normal di PMB

Azimah A.Md.Keb Kota Jambi.
Hubungan Pengetahuan dan Perilaku Menyikat Gigi dengan Status OHI-S Pada Murid Kelas IV SDN 07/IX Kabupaten Muaro Jambi
Authors: Linda Linda , Aida Aida , Sukarsih Sukarsih , Nurutami Nurutami
Published: November 2022

Berdasarkan Laporan Riset Kesehatan Dasar (Riskesdas) Provinsi Jambi tahun 20131 menunjukkan sebagian besar penduduk umur ≥10 tahun ke atas mempunyai kebiasaan menyikat gigi setiap hari 95,7%, pada waktu mandi pagi 95,8%, dan mandi sore 88,6% dan hanya sedikit yang melakukan sesuai anjuran pada saat setelah makan pagi 4,5% dan sebelum tidur malam 17,8%. Perilaku benar dalam menyikat gigi berkaitan dengan faktor gender, ekonomi dan daerah tempat tinggal, sebagian  besar penduduk Indonesia  (76,6%) menyikat gigi pada saat mandi pagi maupun mandi sore. Menyikat gigi dengan benar adalah setelah pagi dan sebelum tidur malam, untuk masyarakat Indonesia hanya di temukan 2,3%. Tujuan penelitian yaitu untuk mengetahui hubungan pengetahuan dan perilaku menyikat gigi dengan status OHI-S pada murid kelas IV SDN 07/IX Kabupaten Muaro Jambi.

Desain penelitian : Jenis penelitian menggunakan metode survey analitik dengan rancangan crosssectional. Subjek penelitian sebanyak 32 orang dan berusia 9-11 tahun. Pengumpulan data dengan menggunakan kuesioner meliputi variabel bebas yaitu pengetahuan, perilaku menyikat gigi dan kartu status pemeriksaan meliputi variabel terikat yaitu OHI-S. Data dianalisis dengan uji statistic chi-squere test dan regresi logistik bergambar.

Hasil penelitian bahwa Tidak ada hubungan yang bermakna antara pengetahuan menyikat gigi dengan kebersihan gigi dan mulut pada murid kelas IV SDN 07/IX Kabupaten Muaro Jambi (p Value = 3,670) dan Tidak ada hubungan yang bermakna antara perilaku menyikat gigi dengan kebersihan gigi dan mulut pada murid kelas IV SDN 07/IX Kabupaten Muaro Jambi (p Value = 2,652)
Bending waves in quasiperiodic beams and plates
Authors: Damme Bart Van
Published: November 2022

Flexural waves in slender structures, beams or plates, take an important place in engineering applications since they are easily excited and play a dominant role for noise generation. The reduction of flexural motion is an old problem, be it for building materials, automotive applications, or precision instruments. The vast majority of metamaterial studies in the vibroacoustic domain is aiming at vibration reduction of one- and two-dimensional structures. Their models are very often based on the periodicity assumption, giving physical insights with minimal calculation power. However, nature shows us that materials without translational symmetry in their structure can give rise to exotic wave scattering behaviour, very similar to Bragg scattering but with different rotational symmetries leading to 5- and 10-fold diffraction patterns. At the same time, Penrose showed mathematically that planes can be filled with combinations of a limited number of polyhedra in a fully aperiodic way. Despite the absence of any translational periodicity, these structures are uniquely defined and have recognizable local rotational symmetries. They are therefore called quasicrystals.
We present two examples of bending waves in quasicrystalline structures, both numerical and experimental. The first case shows unexpected low-frequency band gaps in beams with two periodic arrays of slits. The scattering of bending waves due to the aperiodic changes in bending stiffness results in interaction between the two periodic Bragg band gaps. The second example shows the formation of band gaps and localized modes in a quasicrystal plate dressed with scatterers in a Penrose pattern. Band gaps occur at lower frequencies than in a periodic array of scatterers with the same density, but is therefore less efficient. In both cases the structures showcase areas with low and high vibrational amplitudes, a fact that might be exploited to lead high energy concentrations away from critical points.
Promoting Students’ Math Learning Performance and Engagement: A Help-seeking Mech+C3:C18anism-based Mobile Gaming Approach
Authors: Kai-Hsiang Yang Kai-Hsiang Yang , Kai-Hsiang Yang Hui-Chun Chu , Chin-Chung Hsieh Chin-Chung Hsieh , Chin-Chung Hsieh Fan-Ray Kuo
Published: November 2022

Mobile game-based learning systems are generally expected to be interactive, connectable, and recordable. Researchers have indicated that it is important to promote interaction between peers during mobile learning activities in class. In this study, an interactive mobile math game with a help-seeking mechanism is proposed to improve elementary school students’ learning achievements, learning motivation and social interactions. To evaluate the effectiveness of the proposed approach, an experiment was conducted in an elementary school mathematics course. A total of 59 third graders from two classes participated in the experiment. One class with 30 students was assigned to the experimental group learning with the interactive mobile math game with the help-seeking mechanism, while the other class with 29 students was assigned to the control group learning with the conventional mobile gaming approach. Based on the empirical results, it was found that the proposed approach effectively promoted the students’ learning achievement and learning motivation. A follow-up analysis of the experimental results further showed that the proposed approach benefited the students with low mathematics self-efficacy more than those with high self-efficacy, indicating the potential of the approach for helping students with low self-efficacy improve their mathematics ability.

 
Outage Performance of Multi-relay System with Energy Harvesting and Storage
Authors: Huifang Pan Huifang Pan , Huifang Pan Qi Zhu
Published: November 2022

This paper analyzes the performance of a two-hop half-duplex multi-relay system based on energy harvesting. The relay has energy harvesting and storage functions, and adopts an adaptive AF/DF transmission strategy and PS protocol. Based on three relay selection schemes, namely Energy Optimal Selection (EOS), Channel Gain Optimal Selection (GOS), and Energy and Channel Gain Optimal Selection (EGOS), the outage performance is compared. First, the finite state Markov chain (FSMC) is used to model the energy arrival and use status of each relay, and the energy transfer steady-state matrix is obtained. Then we use the Gauss Chebyshev formula to derive the analytical expression of the communication outage probability (COP). Finally, an optimization model for minimizing the COP for three relay selection schemes is constructed. The EOS and GOS schemes optimize power allocation for energy harvesting and information transmission, and the EGOS scheme jointly optimizes power allocation and energy thresholds. We use a one-dimensional search algorithm based on the golden section and a two-dimensional search algorithm based on iteration to solve these optimization problems. The simulation results show that the EGOS is the best among the three relay selection schemes.

 
An Improvement of an IP Fast Reroute Method Using Multiple Routing Tables
Authors: Yuya Tarutani Yuya Tarutani , Yuya Tarutani Masashi Ishigai , Masashi Ishigai Naoto Numata , Naoto Numata Yukinobu Fukushima , Yukinobu Fukushima Tokumi Yokohira
Published: November 2022

The demand for high Internet availability has increased. As a routing method to recover fast from a single network component (link or node) failure, a method using multiple routing tables has been proposed. In the method, when a component failure occurs, packets which are supposed to pass through the component in the failure free state are rerouted using a backup routing table (backup table: BT) which does not use the component. Thus, it is important to decrease the increased routing cost, and because the method uses multiple BTs, it is also important to decrease the numbers of entries in BTs. In this paper, we propose a new routing method to decrease the increased routing cost. In the conventional method, there are many components that do not fail but are not used for packet forwarding in a BT. In our proposed method, we use such components as much as possible to decrease the increased routing cost. About the decreasing of the numbers of entries in BTs, we simulate packet forwarding for every node-pair and find unnecessary entries which are not used in packet forwarding in any node-pair. Numerical examples show that our proposed method is superior to the conventional method.

 