bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Brand Trust terhadap EWOM Refferal Melalui Purchase Decision (Pada Industri Salon Kecantikan di Kota Medan)
Authors: Fadhilah Annisa Nur , H.M Hermansyur  , Handoko Bagus
Published: September 2024

ABSTRACT
This study aims to determine the effect of brand trust on eWOM referrals through purchasing decisions. The population in this study were 100 respondents from Safa Salon Hair Style and Body Spa in Medan City. The analytical technique used is path analysis. The results showed that brand trust had a positive and significant effect on eWOM referrals mediated by purchasing decisions.
Keywords: Brand Trust, Purchase Decision, and Ewom referral
ABSTRAK
            Penelitian ini bertujuan untuk mengetahui pengaruh brand trust terhadap ewom refferal melalui purchase decision. Populasi dalam penelitian ini adalah 100 responden dari Safa Salon Hair Style and Body Spa di Kota Medan. Teknik analisis yang digunakan adalah analisis path. Hasil penelitian menunjukkan bahwa brand trust berpengaruh positif dan signifikan terhadap ewom refferal yang dimediasi oleh purchase decision.
Kata Kunci: Brand Trust, Purchase Decision, Ewom referral
PENDAHULUAN
Perkembangan ekonomi, teknologi, budaya, dan gaya hidup di era globalisasi yang semakin pesat seiring berjalannya waktu menimbulkan persaingan dalam berbagai bidang, terlebih dalam perekonomian yang tumbuh dengan sangat pesat. Tuntutan untuk bisa memberikan penampilan terbaik membuat masyarakat semakin peduli dengan masalah ini terutama bagi kaum wanita. Secara lahiriah, wanita selalu ingin tampil cantik. Beragam cara yang akan dilakukan untuk tetap tampil cantik salah satunya dengan melakukan perawatan kecantikan.  Kebutuhan wanita terhadap fasilitas kecantikan sekarang ini terus meningkat, karena wanita sudah menyadari begitu pentingnya kesehatan tubuh dan merawatnya agar terlihat cantik dan sehat. Banyak tempat yang menawarkan perawatan kecantikan, mulai dari salon-salon kecil hingga klinik-klinik kecantikan mewah.  Semuanya memiliki kelebihan dan kekurangan masing-masing. Konsumen juga menjadi semakin selektif dalam memilih tempat perawatan kecantikan mana yang paling sesuai dengan kebutuhan mereka. Hal inilah yang membuat bisnis ini menjadi semakin kompetitif (Apriliani dan Edwar, 2015).
Analisa Faktor Yang Mempengaruhi Organizational Citizenship Behavior Karyawan PT.Bank Sumut Kantor Pusat Medan
Authors: Anshah Amri , Tahura Tengku Lyza , Hafas Hafriz Rifki
Published: September 2024

Abstract: This study aims to analyze the significant influence of organizational climate, employee engagement, work palcement and organizational commitment on the organizational citizenship behavior of PT. Central Sumatera Bank Medan. The total population in this study amounted to 531 employee and use 84 employee as a sample. The analysis technique used is multiple regression analysis. The results showed that organizational climate, work placement and organizational commitment had a significant effect on organizational citizenship behavior and  employee engagement had a not significant effect on organizational citizenship behavior at PT. Central Sumatera Bank Medan. As simultan effect the organizational climate, employee engagement, work placement and organizational commitment had a significant effect on organizational citizenship behavior at PT. Central Sumatera Bank.
 
Abstraksi: Penelitian ini bertujuan untuk menganalisis pengaruh signifikan iklim organisasi, keterlibatan pegawai, penempatan kerja, komitmen organisasi terhadap Organizational Citizenship Behavior pada PT. Bank Sumut Kantor Pusat Medan. Jumlah populasi dalam penelitian ini adalah berjumlah 531 pegawai dan sampel yang diambil sebanyak 84 pegawai PT.Bank Sumut Kantor Pusat. Teknik analisis yang digunakan adalah analisis regresi linear berganda. Hasil penelitian menunjukkan bahwa budaya iklim organisasi, penempatan kerja dan komitmen organisasi berpengaruh signifikan terhadap OCB sedangkan keterlibatan pegawai tidak berpengaruh signifikan terhadap OCB pada PT. Bank Sumut Kantor Pusat Medan. Secara simultan iklim organisasi, keterlibatan pegawai, penempatan kerja dan komitmen organisasi berpengaruh signifikan terhadap OCB pada PT. Bank Sumut Kantor Pusat Medan.
Pengaruh Religiusitas, Sosialisasi Perpajakan dan Kualitas Pelayanan Pajak Terhadap Kepatuhan WP Dengan Kesadaran WP Sebagai Variabel Intervening
Authors: Pulungan Dedy Zakaria , Arifin Syamsul Bahri
Published: September 2024

Kepatuhan wajib pajak menjadi hal yang sangat penting dalam pembangunan ekonomi negara yang memberikan pengaruh terhadap kesejahteraan masyarakat, sehingga perlu adanya motivasi dan dorongan dari fiskus yang dapat meningkatkan kepatuhan wajib pajak. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi kepatuhan wajib pajak. Populasi yang digunakan pada penelitian ini adalah seluruh wajib pajak orang pribadi yang terdaftar wajib SPT di KPP Pratama Medan Timur sebanyak 51.191, dengan metode slovin. Hasil penelitian ini menunjukkan bahwa Religiusitas, dan Sosialisasi perpajakan tidak berpengaruh signifikan terhadap Kesadaran Wajib Pajak, sedangkan Kualitas Pelayanan Pajak berpengaruh signifikan terhadap Kesadaran Wajib Pajak. Religiusitas tidak berpengaruh signifikan terhadap Kepatuhan Wajib Pajak, sedangkan Sosialisasi Perpajakan, Kualitas Pelayanan Pajak, dan Kesadaran Wajib Pajak berpengaruh signifikan terhadap Kepatuhan Wajib Pajak. Kesadaran Wajib Pajak tidak dapat memediasi pengaruh Religiusitas, Sosialisasi Perpajakan dan Kualitas Pelayanan pajak terhadap Kepatuhan Wajib Pajak pada KPP Pratama Medan Timur.
Peran Keunggulan Bersaing dalam Memediasi Orientasi Pasar dan Orientasi Kewirausahaan Pada Kinerja UKM Di Masa Pandemi Covid-19
Authors: Anggraini Putri
Published: September 2024

ABSTRACT
 
This study aims to examine the effect of market orientation on competitive advantage, to examine the effect of entrepreneurial orientation on competitive advantage, to examine the effect of market orientation on the performance of SMEs, to examine the effect of entrepreneurial orientation on the performance of SMEs, to examine the effect of competitive advantage on the performance of SMEs, to examine the effect of competitive advantage mediating market orientation on the performance of SMEs and to examine the effect of competitive advantage mediating entrepreneurial orientation on the performance of SMEs. The total population in this study amounted to 100 and all of them were used as samples in this study. The analysis technique used is path analysis. The results showed that market orientation had a positive and significant effect on competitive advantage, entrepreneurial orientation had no effect on competitive advantage, market orientation had a positive and significant effect on SME performance, entrepreneurial orientation had a positive and significant effect on SME performance, competitive advantage had no effect on SME performance, competitive advantage competitive advantage does not mediate the effect of market orientation on the performance of SMEs and competitive advantage does not mediate the effect of entrepreneurial orientation on the performance of SMEs.
 
Keywords:   Market Orientation, Entrepreneurship Orientation, SME Performance, Competitive Advantage
 
ABSTRAK
 
Penelitian ini bertujuan untuk menguji pengaruh orientasi pasar terhadap keunggulan bersaing, untuk menguji pengaruh orientasi kewirausahaan terhadap keunggulan bersaing, untuk menguji pengaruh orientasi pasar terhadap kinerja UKM, untuk mengujipengaruh orientasi kewirausahaan terhadap kinerja UKM, untuk menguji pengaruh keunggulan bersaing terhadap kinerja UKM, untuk menguji pengaruh keunggulan bersaing memediasi orientasi pasar terhadap kinerja UKM dan untuk menguji pengaruh keunggulan bersaing memediasi orientasi kewirausahaan terhadap kinerja UKM. Jumlah populasi dalam penelitian ini adalah berjumlah 100 dan semuanya dijadikan sampel dalam penelitian ini. Teknik analisis yang digunakan adalah path analysis. Hasil penelitian menunjukkan bahwa orientasi pasar berpengaruh positif dan signifikan terhadap keunggulan bersaing, orientasi kewirausahaan tidak berpengaruh terhadap keunggulan bersaing, opasar berpengaruh positif dan signifikan terhadap kinerja UKM, orientasi kewirausahaan berpengaruh positif dan signifikan terhadap kinerja UKM, keunggulan bersaing tidak berpengaruh terhadap kinerja UKM, keunggulan bersaing tidak memediasi pengaruh orientasi pasar terhadap kinerja UKM dan keunggulan bersaing tidak memediasi pengaruh orientasi kewirausahaan terhadap kinerja UKM.
Pengaruh Beban Kerja Dan Kompensasi Terhadap Kepuasan Kerja Pada PT. Indako Trading Coy
Authors: Taruna Areka
Published: September 2024

Penelitian ini bertujuan untuk mengetahui pengaruh beban kerja terhadap kepuasan kerja, untuk mengetahui kompensasi terhadap kepuasan kerja dan untuk mengetahui pengaruh beban kerja dan kompensasi terhadap kepuasan kerja. Jumlah populasi dalam penelitian ini adalah 114 responden dan dengan menggunakan teknik penarikan sampel jenuh. Teknik analisis yang digunakan adalah regresi linier berganda. Hasil penelitian menunjukkan bahwa beban kerja berpengaruh positif dan signifikan terhadap kepuasan kerja pada PT. Indako Trading Coy Medan. Kompensasi berpengaruh positif dan tidak signifikan terhadap kepuasan kerja pada PT. Indako Trading Coy Medan. Beban kerja dan kompensasi berpengaruh positif dan signifikan terhadap kepuasan kerja pada PT. Indako Trading Coy Medan.
 
Kata kunci: Beban Kerja, Kompensasi, Kepuasan Kerja
Pengaruh Market Orientation, Inovasi, Learning Orientation Terhadap Keunggulan Bersaing Industri Roti di Medan
Authors: Nabilah Tia
Published: September 2024

Penelitian ini bertujuan untuk mengetahui pengaruh market orientation, inovasi, learning orientation terhadap keunggulan bersaing pada industri roti di Medan. Desain penelitian ini analisis regresi linear berganda digunakan sebagai alat analisis untuk mengetahui bagaimana pengaruh antara variabel independent terhadap variabel dependen. Dalam penelitian ini menggunakan jenis penelitian asosiatif dengan pendekatan kuantitatif. Populasi dan sampel yang digunakan dalam penelitian ini, yaitu 100 pelaku usaha industry roti di kota Medan. Hasil pada penelitian ini menunjukkan bahwa variabel market orientation, inovasi dan learning orientation berpengaruh secara signifikan terhadap keunggulan bersaing.
 
Kata kunci: Market Orientation, Inovasi, Learning Orientation, Keunggulan Bersaing.
Pengaruh DER, CR dan PBV Terhadap Harga Saham Dengan Kebijakan Dividen Sebagai Variabel Intervening Pada Perusahaan Manufaktur Sektor Industri Barang Konsumsi Tahun 2016 – 2020
Authors: ZUSLAINI ULFI
Published: September 2024

This study aims to determine the effect of Debt to Equity Ratio (DER), Current Ratio (CR), and Price to Book Value (PBV) on stock prices with dividend policy as an intervening variable listed on the Indonesia Stock Exchange (IDX). This research is a causal associative study and the type of data used is quantitative data. The population of this study is manufacturing companies in the consumer goods industry sector for the 2016-2020 period, which amounted to 68 companies. The sample in this study totaled 21 companies. The data used is secondary data in the form of annual reports and company financial statements that have been audited on the Indonesia Stock Exchange during the 2016-2020 period. Data that is ready to be processed will be carried out statistical testing using the SmartPLS program.
The results of this study show that the Debt to Equity ratio (DER) has a positive and insignificant effect on dividend yield, Current Ratio (CR) has a positive and insignificant effect on dividend yield, Price to Book Value (PBV) has a positive and insignificant effect on dividend yield, Debt to Equity ratio (DER) has a negative and significant effect on stock price,  Debt to Equity ratio (DER) has a negative and significant effect on stock prices, Price to Book Value (PBV) has a positive and insignificant effect on stock prices, dividend yield has a negative and insignificant effect on stock prices, and dividend yield are unable to mediate the effect of Debt to Equity ratio (DER), Current Ratio (CR), and Price to Book Value (PBV) on stock prices.
Pengaruh Promosi Dan Kualitas Produk Terhadap Keputusan Pembelian Smartphone Samsung Di PT Accentuates Samsung Center Medan
Authors: Lala Latipah Tarigan
Published: September 2024

ABSTRAK

Penelitian ini bertujuan untuk mengetahui pengaruhnya Promosi dan  kualitas produk terhadap keputusan pembelian Smarthphone Samsung, jenis penelitian ini menggunakan metode penelitian kuantitatif dengan sumber data primer dan sekunder. Jumlah sampel penelitian ini yaitu 125 responden yang ditentukan dengan menggunakan Rumus slovi dan teknik accidental samplingyaitu penentuan sampel berdasarkan kebutulan, yaitu siapa saja yang secara kebetulan bertemu  dengan  penelitian dapat digunkan sebagai sampel. Penelitian ini menggunakan SPSS 25 sebagai alat mengolah data. Hasil penelitian ini menunjukan bahwa Terdapat pengaruh yang signifikan antara promosi terhadap keputusan pembelian pada smartphone Samsung dan Tidak terdapat pengaruh yang signifikan antara kualitas produk terhadap keputusan pembelianpada smartphoneSamsung sementara secara semultan Terdapat pengaruh yang signifikan antara promosi dan kualitas produkterhadap keputusan pembelianpada smartphone Samsung
Kata Kunci : Promosi, kualitas produk dan Keputusan Pembelian
Pengaruh harga dan kualitas produk terhadap loyalitas konsumen pada PT MNC Life Assurance Cabang Medan
Authors: Zamili Srilla Norima
Published: September 2024

Penelitian ini bertujuan untuk mengetahui pengaruh Harga dan Kualitas Produk Terhadap Loyalitas Konsumen pada PT. MNC Life Assurance Cabang Medan. Pada penelitian ini menggunakan jenis penelitian kuantitatif, kemudian pada penelitian ini menggunakan teknik pengumpulan data yaitu menggunakan data kuisioner, wawancara dan juga dengan cara melakukan observasi. Jumlah sampel di dalam penelitian ini berjumlah 70 responden. Teknik analisis data yang digunakan dalah dengan statistik deskriptif, uji regresi linear berganda, uji hipotesis dan juga menggunakan uji koefisen determinasi. Dari hasil penelitian ini di dapat hasil yang di mana variabel harga berpengaruh dan signifikan terhadap loyalitas konsumen. Kemudian pada variabel kualitas produk mempunyai pengaruh dan signifikan terhadap loyalitas konsumen. Secara simultan variabel harga dan variabel kualitas produk berpengaruh secra bersama-sama terhadap loyalitas konsumen pada PT. MNC Life Assurance Cabang Medan.
 
Kata kunci: Harga, Kualitas Produk dan Loyalitas Konsumen
Pengaruh Pemahaman Pencatatan Akutansi dan Kesiapan Modal Terhadap Efesiensi Pendapatan UMKM (Studi Kasus Pedagang Makanan dan Minuman Yang Terdaftar Di UMKM Kota Medan)
Authors: Larasati  , Anggraini Siregar Ratih
Published: September 2024

Penelitian ini bertujuan untuk mengetahui pengaruh pencatatan akutansi dan kesiapan modal terhadap efesiensi pendapatan UMKM makanan dan minuman yang terdaftar pada Dinas UMKM Kota Medan. Teknik penumpulan data yang digunakan dalam penelitian menggunakan kuisioner. Kemudian teknik analisis data yang digunakan dalam penelitian ini adalah uji statistik, uji asumsi klasik, uji regresi linear berganda, uji hipotesis dan uji koefisien determinasi. Penelitian ini menggunakan data primer yang bersumber dari hasil penyebaran kuisioner dan wawancara yang dilakukan peneliti kepada pedagang bakso dan data sekunder yang digunakan bersumber dari Dinas UMKM Kota Medan. Hasil analisis menunjukan bahwa pemahaman pencatatan akuntansi dan kesiapan modal secara bersama-sama berpengaruh positif terhadap efesiensi pendapatan.
Pengaruh Lingkungan Kerja dan Kompetensi Individu Terhadap Produktivitas Kerja Pada PT. Bank Sumut Kantor Pusat Medan
Authors: Sari Harahap Putri
Published: September 2024

ABSTRAK

           Perusahaan dituntut untuk bisa bersaing dengan perusahaan lainnya. Salah satu fokus utama dalam meningkatkan produktivitas perusahaan adalah lingkungan kerja karena merupakan satu komponen penting dalam jalannya suatu perusahaan. Penelitian ini adalah kuantitatif menggunakan metode statstik deskriptif dan menggunakan teknik pengambilan rumus slovin.Data yang digunakan dalam penelitian ini adalah data primer dengan jumlah sampel sebanyak 78 orang responden yaitu karyawan di PT.Bank Sumut Kantor Pusat Medan.Sedangkan teknik analisis yang digunakan adalah regresi linier berganda. Berdasakan hasil penelitian secara simultan menunjukan bahwa variabel Lingkungan kerja, Kompetensi individu berpengaruh signifikan dan positif terhadap Produktivitas kerja.      
 
Kata Kunci : Lingkungan Kerja, Kompetensi Individu, Produktivitas kerja
Pengaruh Beban Kerja Terhadap Semangat Kerja Dengan Kompetensi Sebagai Variabel Intervening Pada PT Perkebunan Nusantara III (Persero) Tanah Raja
Authors: Br Sembiring Imelda
Published: September 2024

Penelitian ini bertujuan untuk menganalisis bagaimana pengaruh semangat kerja,pengaruh kompetensi,pengaruh kompetensi terhadap semangat kerja dan pengaruh beban kerja terhadap semangat kerja melalui kompetensi sebagai variabel intervening. Jumlah populasi dalam penelitian ini adalah berjumlah 200 orang, dan dengan menggunakan teknik penarikan sampel slovin diperoleh sampel sebesar 133 orang. Analisa data dalam penelitian ini menggunakan metode uji validitas, uji reliabilitas, Path analysis, Regresi linier berganda, uji asumsi klasik, uji model (F), uji parsial (T), dan uji koefisien determinasi. Hasil penelitian ini menunjukkan bahwa beban kerja tidak berpengaruh terhadap kompetensi. Beban kerja berengaruh terhadap semangat kerja, Kompetensi berpengaruh  terhadap semangat kerja,  Beban kerja berpengaruh terhadap semangat kerja dengan kompetensi sebagai variabel intervening pada PT Perkebunan Nusantara III Tanah Raja
 
Kata kunci : Beban kerja, Semangat Kerja, Kompetensi
Academic Resilience and Self-Concept as Correlates of School Satisfaction among Form Two Students in the North East Region of Botswana.
Authors: Dokobe Galeipone , Wawire Chrispus Koinange , Olendo Rosemary Akinyi
Published: September 2024

There is paucity of studies on academic resilience, academic self-concept and school satisfaction in the North East Region, Botswana. Available studies globally revealed inconsistent findings on school satisfaction over the years. The research goal was to examine the correlation between academic resilience, academic self-concept and school satisfaction. The study was anchored on Flach`s Theory of Resilience and the Self Determination Theory. It targeted 3514 form two students in the 18 public Junior Secondary Schools in the North East Region, Botswana. Proportionate stratified and simple random sampling were used to select 450 respondents across 9 junior secondary schools to fill self-report measures. Academic Resilience Scale (ARS-6), Academic Self-Concept Questionnaire and the School Satisfaction Subscale from the Multidimensional Student Life Satisfaction Scale were used. Data was analysed using Pearson product moment correlation coefficient. The results revealed a significant, positive, albeit weak relationship between, academic resilience (r (444) = 20 p < 0.01) and academic self-concept (r (444) = .26, p < .01) with school satisfaction. Further moderation analyses reveal that the relationships between academic resilience, academic self-concept and school satisfaction were weaker for females compared to males. The findings have implications for teachers, counselors and parents to integrate and infuse academic resilience and academic self-concept in different subjects and school activities so as to evoke student`s satisfaction with school.
Excellence Practices in Scrum Paradigm in Software Development
Authors: Pashchenko Denis
Published: September 2024

This article presents a comprehensive approach to improving Scrum methodology in practical software development. This article is intended for software engineering scientists and expert practitioners who develop their software products in the Scrum paradigm. The proposed best practices align with contemporary trends in the IT domain, including the complete digitalization and virtualization of production processes, the shift to fully remote software development, the integration of artificial intelligence technologies, and cost-saving models in team organization. The changes in software production processes discussed in this article are based on research conducted between 2020 and 2023. Those research encompasses the experiences of leading Russian, European, and international IT companies, and highlights the significant shift in IT business organization towards new standards of Scrum team efficiency. These standards include the data-driven formalization of production models, automation through AI tools, and visible cost optimization in engineer's teams, aligning closely with the demands of modern IT businesses. The article outlines a set of management actions designed to adapt to these evolving trends in the IT domain. These actions range from the formalization of sprint goals and processes in Scrum to sophisticated management of technical debt and the cost-effective organization of developer teams. As a main contribution in the article there are presented most valuable Scrum paradigm excellence elements: implementing measurable and specific sprint goals in SMART-format, cost-saving practices, management of sprint parameters, usage of AI tools in software engineering.   Presented in article recommendations might help in practical implementation of those process changes, based on industry practice and reduce any corresponding risks on software development projects.
 
Received: 18 June 2024 | Revised: 12 August 2024 | Accepted: 5 September 2024 
 
Conflicts of Interest
The author declares that he has no conflicts of interest to this work.
 
Data Availability Statement
Data sharing is not applicable to this article as no new data were created or analyzed in this study.
 
Author Contribution Statement
Denis Pashchenko: Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Data curation, Writing - original draft, Visualization, Supervision, Project administration
Empresas sustentáveis sob qual perspectiva?
Authors: Milani Filho Marco Antonio
Published: September 2024

Neste trabalho objetivou-se verificar se a divulgação de informações classificadas como indicativas de sustentabilidade espelha, de fato, a capacidade de sobrevivência das organizações. Esta proposta investiga a situação paradoxal em que empresas reconhecidas publicamente como “sustentáveis” apresentam graves dificuldades para se sustentarem. Para ilustrar essa situação, estudou-se o caso da empresa Americanas S.A., a qual entrou com o maior valor de dívida em processo de recuperação judicial em 2023 e seus relatórios de sustentabilidade de anos anteriores à solicitação formal de proteção jurídica não indicavam qualquer alerta nesse sentido. Foram analisados os indicadores de sustentabilidade pautados pelas normas GRI e, também, os alinhados com os padrões ESG. Ambos apontavam, em 2021, uma condição operacional favorável da Americanas S.A., escamoteando os riscos de insolvência existentes. Fomentam-se estudos futuros sobre a efetividade dos indicadores de sustentabilidade e a respectiva capacidade da organização de sobreviver ao longo do tempo.
Effects of Gradient Bias on Amorphous Carbon Film for Bipolar Plates
Authors: Tian Feng , Huang Zhiquan , Wang Jianming , Tao Xiao , Tian Wubian , Chen Jian
Published: September 2024

Amorphous carbon (a-C) films were deposited at constant and gradient substrate bias using magnetron sputtering. The influence of applied substrate bias on the microstructure, chemical bonding, corrosion resistance, and electrical conductivity of a-C films was investigated. The a-C film obtained at a gradient substrate bias of 120 V to 60 V (V120-60) shows smooth surface morphology, dense multilayer, and fine columnar structures, similar to the samples prepared at a constant bias of 120 V (V120). AFM results indicate that V120-60 has the lowest surface roughness (Ra = 1.79 nm). The current density of V120-60 is 0.664 × 10−6 A/cm2 at the applied 0.6 VSCE after potentiodynamic polarization testing, which is almost half that of V60 (1.13 × 10−6 A/cm2). The initial interfacial contact resistance of V120-60 is 12.22 mΩ·cm2, which is about half of that of V120 (21.80 mΩ·cm2) and close to that of V60 (10.54 mΩ·cm2). It is found that the proper balance between the corrosion resistance and interfacial conductivity was achieved in V120-60 due to the increasing sp2-C/sp3-C ratio from substrate to surface. Therefore, the present strategy with decreasing gradient substrate bias is expected to be a practical improvement process for modifying the properties of a-C films on bipolar plates. This research enhances the performance and lifespan of energy storage and conversion devices, such as fuel cells and supercapacitors.
Clinical and Evolutionary Characteristics of HepatoblastomasTreated at the Tunis Children’s Hospital
Authors: Dr ElhemJbebli Dr ElhemJbebli , Hssine Dr Farah , Ben Ahmed Dr Sarra , Amdouni Dr Rim , Fedhila Pr Faten , Rhayem Pr Samar , Khemiri Pr Monia
Published: September 2024

Epidemiological data on hepatoblastoma, the most common malignant liver tumor in pediatrics, are lacking in Tunisia. The objective of this study was to examine the clinical, therapeutic, and evolutionary characteristics of hepatoblastoma in children and to identify factors that influence prognosis. This was a retrospective analysis of all pediatric patients under the age of 18 who were treated for hepatoblastoma at the pediatric oncology unit of the Tunis Children’s Hospital over a period of 18 years. A total of 18 patients were included in the study. The median age was 22 months [1 month – 7 years]. The primary presenting symptoms were abdominal bloating and general signs (altered general condition, weight loss and anorexia). Mixed histology was the most prevalent type. Twelve patients were classified in the high-risk group, and six in the standard-risk group. The patients were treated in accordance with the SIOPEL3 protocol. A total of 16 patients underwent surgical treatment. A mean follow-up of 6 years [1 – 14 years] yielded an overall and event-free survival at 5 years of 67% and 55%, respectively. The factors influencing survival were diagnostic delay (p = 0.048), alpha-fetoprotein level (p < 0.001), venous extension (p = 0.018), histological type (p = 0.004), risk group (p = 0.048), and tumor operability (p < 0.001). In the multivariate analysis, socioeconomic status (SES) was found to be independently influenced by alpha-fetoprotein level (p=0.045 and OR: 46.2) and venous extension (p=0.035 and OR: 0.08). Our management strategy is in accordance with the most recent recommendations. The prognosis of patients classified inthe high-risk group remains poor in the absence of liver transplantation.
EPIDEMIOLOGY, CLINIC AND EVOLUTION IN PATIENTS WITH ENDOMETRIOSIS
Authors:   Hospital Universitario “Dr. Ángel Larralde”. Valencia. Estado Carabobo., Molina Rodríguez Ricardo
Published: September 2024

Objective: To study the relationship that exists between some predisposing factors to develop endometriosis and the most frequent symptoms manifested by patients. Methods: Longitudinal, retrospective and descriptive observational study, through the review of 455 records taken from 560 patients who attended the endometriosis consultation and made a definitive diagnosis at the “Dr. Ángel Larralde” and private consultation, in Venezuela, Carabobo state, in the period from January 2006 to May 2023. Results: The diagnosis was made in 47.1% of the patients aged between 26 and 35 years. Menarche occurred between 8 and 12 years of age (69%). 63% did not have pregnancies. Primary dysmenorrhea was more frequent in 63.07%. Pelvic pain and dyspareunia in 48%, digestive symptoms in 21%. The most frequent location was in the ovary (78.7%). Conclusion: Endometriosis, a benign, estrogen-dependent inflammatory disease, is characterized by the presence of ectopic endometrial glands and stroma, usually accompanied by fibrosis. It manifests itself in the reproductive period, its main symptom is pain. It is located most frequently in the pelvis and from this in the ovaries, intestine, bladder, liver, lungs, brain, abdominal wall and perineum. There is no treatment to cure it, but there is treatment for the symptoms and slowing its progress. Its diagnosis due to its multifactorial development and clinical manifestations is often made late. Keywords: endometriosis, pelvic pain, endometrioma, fertility, dysmenorrheal
TUÂN THỦ ĐIỀU TRỊ VÀ CÁC YẾU TỐ LIÊN QUAN Ở NGƯỜI BỆNH ĐÁI THÁO ĐƯỜNG TUÝP 2 ĐIỀU TRỊ NGOẠI TRÚ TẠI BỆNH VIỆN TRƯNG VƯƠNG THÀNH PHỐ HỒ CHÍ MINH NĂM 2022
Authors: Lê Anh Ngọc , Võ Trần Trọng Bình , Lê Thị Thanh Huyền , Võ Ý Lan , Nguyễn Thị Minh Trang
Published: September 2024

Mục đích của nghiên cứu là xác định tỉ lệ tuân thủ điều trị và các yếu tố liên quan ở bệnh nhân ngoại trú mắc bệnh tiểu đường type 2. Nghiên cứu cắt ngang được thực hiện từ tháng 5 đến tháng 6 năm 2022. Có 208 bệnh nhân tham gia nghiên cứu, tỉ lệ tuân thủ là 68.3% cho việc sử dụng thuốc, 44.7% cho hoạt động thể chất, 38% cho dinh dưỡng, và 16.3% cho việc kiểm soát đường huyết. Trong thời kỳ đại dịch COVID-19, ghi nhận 84.1% người có tuân thủ điều trị bị ảnh hưởng tiêu cực. Các yếu tố liên quan đến việc tuân thủ điều trị là tình trạng việc làm, nhóm tuổi, nơi ở, trình độ học vấn, tình trạng kinh tế và thời gian phát hiện và điều trị bệnh. Vì tỉ lệ tuân thủ điều trị vẫn còn thấp, cần phải phát triển các biện pháp tư vấn và hỗ trợ cho bệnh nhân mắc bệnh tiểu đường type 2 nhằm tăng cường việc tuân thủ điều trị.
THỰC TRẠNG VÀ NHU CẦU ĐÀO TẠO LIÊN TỤC VỀ CẤP CỨU CƠ BẢN CỦA BÁC SĨ TẠI CÁC KHOA LÂM SÀNG BỆNH VIỆN ĐA KHOA HÀ ĐÔNG, HÀ NỘI
Authors: Lê Việt Dũng , Nguyễn Hữu Thắng , Lê Thị Kim Chung , Lê Hương Quỳnh
Published: September 2024

Mục tiêu: Mô tả thực trạng và xác định nhu cầu đào tạo liên tục về cấp cứu cơ bản của bác sĩ tại các khoa lâm sàng Bệnh viện đa khoa Hà Đông, Hà Nội năm 2022 – 2023. Đối tượng và phương pháp nghiên cứu: Nghiên cứu cắt ngang, được thực hiện trên 203 bác sĩ thuộc các khoa lâm sàng tại Bệnh viện đa khoa Hà Đông từ tháng 05/2023 đến tháng 04/2024. Kết quả và kết luận: 15,7% bác sĩ lâm sàng được tham gia đào tạo liên tục về cấp cứu cơ bản 84,4% trong số đó là được đào tạo ≥ 48 tiết. 100% các lớp đào tạo liên tục kết hợp giữa lý thuyết và thực hành được tổ chức tập trung. Tất cả các khoá đào tạo đều phù hợp với nhu cầu và áp dụng vào công việc ở mức đồng ý và rất đồng ý.
TÌNH TRẠNG DINH DƯỠNG CỦA NGƯỜI BỆNH ĐIỀU TRỊ TẠI KHOA NỘI BỆNH VIỆN ĐA KHOA ĐỐNG ĐA NĂM 2018
Authors: Nguyễn Thị Thủy , Khúc Hồng Anh
Published: September 2024

Mục tiêu: Đánh giá tình trạng dinh dưỡng và tìm hiểu một số yếu tố liên quan đến tình trạng dinh dưỡng của người bệnh điều trị tại khoa Nội bệnh viện Đa khoa Đống Đa năm 2018. Đối tượng và phương pháp nghiên cứu: Người bệnh điều trị tại khoa Nội bệnh viện Đa khoa Đống Đa, cỡ mẫu là 394. Kết quả: Tỷ lệ người bệnh có nguy cơ mắc SDD là 57,1% và không có nguy cơ SDD là 42,9%. Người bệnh mắc bệnh đường tiêu hóa có nguy cơ SDD cao hơn nhóm người bệnh được chẩn đoán mắc bệnh hệ tuần hoàn, hô hấp và tiết niệu. Kết luận: Người bệnh là nữ, >65 tuổi, trình độ học vấn dưới THPT, và albumin giảm có nguy cơ SDD cao hơn những đối tượng nghiên cứu là nam giới, nhóm tuổi ≤ 65, có trình độ học vấn từ THPT trở lên và mức albumin bình thường.
TÌNH HÌNH SỬ DỤNG CÁC CHẾ PHẨM MÁU TẠI BỆNH VIỆN NGUYỄN TRI PHƯƠNG GIAI ĐOẠN 2021-2023
Authors: Lê Thị Thanh Nhàn , Nguyễn Ngọc Tâm , Lê Thị Trúc Đào , Nguyễn Minh Hà
Published: September 2024

Mục tiêu: Khảo sát thực trạng sử dụng chế phẩm máu tại bệnh viện Nguyễn Tri Phương và tình hình cung cấp chế phẩm máu từ các đơn vị cung ứng đối với bệnh viện trong giai đoạn 2021-2023. Đối tượng và phương pháp nghiên cứu: Thiết kế mô tả cắt ngang trên toàn bộ các chế phẩm máu được sử dụng tại bệnh viện Nguyễn Tri Phương từ 01/2021 đến hết 12/2023. Số liệu được thu thập từ sổ cấp phát máu của Khoa Xét nghiệm, được trình bày theo phương pháp thống kê mô tả. Kết quả: Từ năm 2021 đến 2023, tổng số lượng chế phẩm máu đã sử dụng là 26 315 đơn vị, trong đó chủ yếu là khối hồng cầu (67,6%), huyết tương tươi đông lạnh (26,8%), khối tiểu cầu gạn tách (5,2%) và tủa lạnh (0,5%). Các khoa sử dụng chế phẩm máu nhiều nhất là khoa Nội (40,7%), khoa Hồi sức tích cực (22,6%), khoa Ngoại (21,2%), khoa Cấp cứu (8,4%). Nhóm máu O được sử dụng nhiều nhất (44,5%), đến nhóm máu B, A và AB với tỉ lệ tương ứng là 29,3%, 21,3% và 4,8%. Khả năng cung cấp các chế phẩm máu từ đơn vị cung ứng đáp ứng từ 95,6% trở lên. Kết luận: Từ năm 2021-2023, số lượng chế phẩm máu được sử dụng ngày càng tăng, sự khác biệt về tỉ lệ sử dụng chế phẩm máu phản ánh sự khác nhau trong nhu cầu và đặc thù điều trị cho bệnh nhân ở các khoa lâm sàng, khả năng cung cấp các chế phẩm máu từ đơn vị cung ứng đáp ứng rất tốt với nhu cầu của bệnh viện.
KIẾN THỨC, THỰC HÀNH CHĂM SÓC THIẾT YẾU BÀ MẸ VÀ TRẺ SƠ SINH TRONG VÀ NGAY SAU SINH CỦA CÁN BỘ Y TẾ TẠI 2 HUYỆN YÊN ĐỊNH, NGỌC LẶC TỈNH THANH HÓA NĂM 2023 VÀ MỘT SỐ YẾU TỐ LIÊN QUAN
Authors: Lương Ngọc Trương , Vũ Thị Trang , Ngô Toàn Anh
Published: September 2024

Nghiên cứu mô tả cắt ngang (107 cán bộ y tế) sử dụng bộ câu hỏi phỏng vấn cán bộ y tế và bảng kiểm chăm sóc thiết yếu bà mẹ và trẻ sơ sinh trong và ngay sau đẻ với trường hợp sinh thường để đánh giá kiến thức và kỹ năng thực hành của cán bộ y tế. Kết quả cho thấy kiến thức của cán bộ y tế về chăm sóc thiết yếu ngay và sau khi sinh khá tốt, đều đạt trên 78,5% và ở các mức độ khác nhau cho từng nội dung. Thực hành chăm sóc thiết yếu ngay và sau khi sinh khá tốt, tuy nhiên vẫn thấp hơn kiến thức. Một số thực hành chăm sóc thiết yếu ngay và sau khi sinh trong giai đoạn chuẩn bị trước sinh thấp hơn 75% và ở các mức độ khác nhau cho các nội dung. Những cán bộ y tế có trình độ chuyên môn từ bậc đại học trở lên, đã được đào tạo về chăm sóc thiết yếu ngay sau sinh và những cán bộ y tế công tác tại Trung tâm Y tế huyện có kiến thức và thực hành chăm sóc thiết yếu ngay sau sinh cao hơn những cán bộ y tế khác. Cần thiết tiến hành giám sát hỗ trợ từ tuyến trên để nâng cao hơn nữa thực hành chăm sóc thiết yếu ngay sau sinh ở huyện Ngọc Lặc và Yên Định, tập trung vào những cán bộ y tế có trình độ chuyên môn từ dưới bậc đại học, chưa được đào tạo về chăm sóc thiết yếu ngay sau sinh và những cán bộ y tế công tác tại Trạm y tế xã.
KẾT QUẢ CỦA HOÁ TRỊ TÂN HỖ TRỢ VỚI PHÁC ĐỒ DOCETAXEL, CISPLATIN, VÀ S-1 THEO SAU BẰNG PHẪU THUẬT TRONG ĐIỀU TRỊ UNG THƯ DẠ DÀY DI CĂN HẠCH BULKY
Authors: Trần Quang Đạt , Nguyễn Viết Hải , Đặng Quang Thông , Đoàn Thuỳ Nguyên , Nguyễn Năm Thắng , Nguyễn Thị Kim Xuân , Võ Duy Long
Published: September 2024

Đặt vấn đề: Ung thư dạ dày (UTDD) di căn hạch Bulky được coi là giai đoạn không cắt được và tiên lượng sống còn ngắn. Hoá trị tân hỗ trợ theo sau bằng cắt dạ dày có thể cải thiện kết quả sống còn. Nghiên cứu này phân tích hiệu quả của hoá trị tân hỗ trợ với phác đồ DCS, theo sau bằng phẫu thuật cắt dạ dày, nạo hạch triệt để cho UTDD di căn hạch bulky. Phương pháp nghiên cứu: 26 bệnh nhân (BN) UTDD di căn hạch Bulky được hoá trị, trong đó 18 BN được phẫu thuật cắt dạ dày triệt để từ 01/2018 đến 6/2022 tại Khoa Ngoại Tiêu hóa, Bệnh viện Đại học Y Dược TPHCM. Các dữ liệu lâm sàng bao gồm đặc điểm bệnh, tỉ lệ đáp ứng, độc tính, kết quả phẫu thuật và kết quả sống còn được thu thập và phân tích. Kết quả: Tỉ lệ đáp ứng sau hoá trị tân hỗ trợ là 22/26 BN (84.6%). Độc tính của hoá trị đa số ở mức độ nhẹ, độ 3-4  bao gồm giảm bạch cầu hạt (3.8%), thiếu máu (7.7%) và giảm tiểu cầu (3.8%). Trong đó, 18 BN được phẫu thuật cắt dạ dày, 17/18 (94.4%) đạt được R0. Không có biến chứng nặng ở tất cả các BN được phẫu thuât. Thời gian sống còn chung 3-năm là 54.8% và sống còn không bệnh 3-năm là 40.9%. Kết luận: Hoá trị tân hỗ trợ với phác đồ DCS theo sau bằng phẫu thuật cắt dạ dày triệt để cho độc tính của hoá trị thấp, tỉ lệ đáp ứng lâm sàng cao, phẫu thuật an toàn và cho tỉ lệ sống còn khả quan.
Study of Feminism in Ihan Sunrise's Rihon Short Story Book
Authors: Kasmi Hendra , Mahmud Teuku , Harfiandi Harfiandi , Simatupang Yusrawati JR , Nasution Wahidah , Kustina Rika
Published: September 2024

This research focuses on the influence of feminism in the stories contained in the book collection of short stories by Ihan Sunrise. This study aims to describe the forms of discrimination against Acehnese women and gender equality in Ihan Sunrise’s works throught a collection of short stories by Rihon. The research method used is a qualititative descriptive method with a literature study approach. Based on data analysis, the results of this study show that the works in the collection  of Rihon short stories contain elements of feminism. Discrimination of women in Aceh that occurred for years in social strata. The different treatment of women from men in community  life has given birth of the Acehnese women’s feminist movement.
Our Service Academies Must Discard Race-Based Admissions
Authors: Purdy R. Lawrence
Published: September 2024

The recent Supreme Court ruling in SFFA v. Harvard struck down the use of race in college admissions but did not address the propriety of such in the U.S. military service academies. Despite the obvious need for a unified military that recruits and trains the best, Constitutional lawyer Lawrence Purdy ponders the continuing support for race-based hiring and promotion among the military’s top brass.
POLÍTICAS PÚBLICAS PARA A EDUCAÇÃO ESPECIAL: A IMPORTÂNCIA DA INCLUSÃO ESCOLAR PARA CRIANÇAS COM AUTISMO
Authors: Bahia Iara Balbina Oliveira , Silva Elias Alves da
Published: September 2024

Este escrito tem como objetivo analisar as políticas públicas brasileiras direcionadas para a educação especial, com foco na inclusão escolar de crianças com Transtorno do Espectro Autista (TEA). A inclusão educacional, amparada pela legislação nacional, visa defender que independentemente de suas necessidades especiais, todas as crianças têm direito a uma educação de qualidade e oportunidades iguais de desenvolvimento. É sabido que a inclusão escolar de crianças com TEA não restringe apenas o acesso ao ambiente escolar, mas também envolve o suporte especializado, adaptação curricular, além do preparo dos docentes para lidar com as especificidades do transtorno do espectro autista. A metodologia adotada neste estudo é qualitativa, sendo fundamentada em uma revisão bibliográfica e documental. Foram analisados artigos científicos, teses, monografias, assim como documentos oficiais, legislações e diretrizes educacionais do governo brasileiro. Essas bases de dados foram coletadas através do Google acadêmico e Scielo. Os resultados indicam que mesmo com o avanço significativo das políticas públicas brasileiras para garantir a inclusão escolar de crianças com autismo, os desafios ainda existem.  Entre eles, ressalta-se a necessidade de uma formação continuada e especializada para docentes, disponibilidade de recursos pedagógicos que atendam às necessidades desses educandos, além de adaptação adequada do currículo escolar. Deste modo, conclui-se que para a inclusão escolar de crianças com autismo seja realmente satisfatória, é primordial um compromisso contínuo com o desenvolvimento e efetivação de políticas públicas que promovam a integração, plena inclusão e valorização dessas crianças no âmbito escolar.
Observations of the vertical distributions of summertime atmospheric pollutants in Nam Co: OH production and source analysis
Authors: Xing Chengzhi , Liu Cheng , Ye Chunxiang , Xue Jingkai , Wu Hongyu , Ji Xiangguang , Ou Jinping , Hu Qihou
Published: September 2024

Abstract. The Tibetan Plateau (TP) plays a key role in the regional environment and global climate change; however, the lack of vertical observations of atmospheric species, such as HONO and O3, hinders a deeper understanding of the atmospheric chemistry and atmospheric oxidation capacity (AOC) on the TP. In this study, we conducted multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements at Nam Co, the central TP, to observe the vertical profiles of aerosol, water vapor (H2O), NO2, HONO and O3 from May to July 2019. In addition to NO2 mainly exhibiting a Gaussian shape with the maximum value appearing at 300=-400 m, the other four species all showed an exponential shape and decreased with the increase in height. The maximum values of monthly averaged aerosol (0.17 km−1) and O3 (66.71 ppb) occurred in May, H2O (3.68 × 1017 molec. cm−3) and HONO (0.13 ppb) appeared in July, and NO2 (0.39 ppb) occurred in June at the 200–400 m layer. H2O, HONO and O3 all exhibited a multi-peak pattern, and aerosol appeared to have a bi-peak pattern for its averaged diurnal variations. The averaged vertical profiles of OH production rates from O3 and HONO all exhibited an exponential shape decreasing with the increase in height, with maximum values of 2.61 and 0.49 ppb h−1 at the bottom layer, respectively. The total OH production rate contributed by HONO and O3 on the TP was obviously larger than that in low-altitude areas. In addition, source analysis was conducted for HONO and O3 at different height layers. The heterogeneous reaction of NO2 on wet surfaces was a significant source of HONO. The maximum values of HONO/NO2 appeared when H2O concentrations were approximately 1.0 × 1017 molec. cm−3 and aerosol concentrations were larger than 0.15 km−1 below 1.0 km. The maximum values were usually accompanied by H2O concentrations of 1.0–2.0 × 1017 molec. cm−3 and aerosol concentrations greater than 0.02 km−1 at 1.0–2.0 km. O3 was potentially sourced from the South Asian subcontinent and Himalayas through long-range transport. Our results contribute to the new understanding of vertical distribution of atmospheric components and explain the strong AOC on the TP.
Mapping the CO2 total column retrieval performance from shortwave infrared measurements: synthetic impacts of the spectral resolution, signal-to-noise ratio, and spectral band selection
Authors: Dogniaux Matthieu , Crevoisier Cyril
Published: September 2024

Abstract. Satellites have been providing spaceborne observations of the total column of CO2 (denoted XCO2) for over two decades now, and, with the need for independent verification of Paris Agreement objectives, many new satellite concepts are currently planned or being studied to complement or extend the instruments that already exist. Depending on whether they are targeting natural and/or anthropogenic fluxes of CO2, the designs of these future concepts vary greatly. The characteristics of their shortwave infrared (SWIR) observations notably explore several orders of magnitude in spectral resolution (from λ/Δλ ∼ 400 for Carbon Mapper to λ/Δλ ∼ 25 000 for MicroCarb) and include different selections of spectral bands (from one to four bands, among which there are the CO2-sensitive 1.6 µm and/or 2.05 µm bands). The very nature of the spaceborne measurements is also explored: for instance, the NanoCarb imaging concept proposes to measure CO2-sensitive truncated interferograms, instead of infrared spectra like other concepts, in order to significantly reduce the instrument size. This study synthetically explores the impact of three different design parameters on the XCO2 retrieval performance obtained through optimal estimation: (1) the spectral resolution, (2) the signal-to-noise ratio (SNR) and (3) the spectral band selection. Similar performance assessments are completed for the exactly defined OCO-2, MicroCarb, Copernicus CO2 Monitoring (CO2M) and NanoCarb concepts. We show that improving the SNR is more efficient than improving the spectral resolution to increase XCO2 precision when perturbing these parameters across 2 orders of magnitude, and we find that a low SNR and/or a low spectral resolution yield XCO2 with vertical sensitivities that give more weight to atmospheric layers close to the surface. The exploration of various spectral band combinations illustrates, especially for lower spectral resolutions, how including an O2-sensitive band helps to increase the optical path length information and how the 2.05 µm CO2-sensitive band contains more geophysical information than the 1.6 µm band. With very different characteristics, MicroCarb shows a CO2 information content that is only slightly higher than that of CO2M, which translates into XCO2 random errors that are lower by a factor ranging from 1.1 to 1.9, depending on the observational situation. The performance of NanoCarb for a single pixel of its imager is comparable to those of concepts that measure spectra at low SNR and low spectral resolution, but, as this novel concept would observe a given target several times during a single overpass, its performance improves when combining all the observations. Overall, the broad range of results obtained through this synthetic XCO2 performance mapping hint at the future intercomparison challenges that the wide variety of upcoming CO2-observing concepts will pose.
Effects of surface water interactions with karst groundwater on microbial biomass, metabolism, and production
Authors: Barry-Sosa Adrian , Flint Madison K. , Ellena Justin C. , Martin Jonathan B. , Christner Brent C.
Published: September 2024

Abstract. Unearthing the effects of surface water and groundwater interactions on subsurface biogeochemical reactions is crucial for developing a more mechanistic understanding of carbon and energy flow in aquifer ecosystems. To examine physiological characteristics across groundwater microbial communities that experience varying degrees of interaction with surface waters, we investigated 10 springs and a river sink and rise system in north central Florida that discharge from and/or mix with the karstic upper Floridan aquifer (UFA). Groundwater with longer residence times in the aquifer had lower concentrations of dissolved oxygen, dissolved and particulate organic carbon, and microbial biomass, as well as the lowest rates of respiration (0.102 to 0.189 mgO2L-1d-1) and heterotrophic production (198 to 576 µgCL-1d-1). Despite these features, oligotrophic UFA groundwater (< 0.5 mg C L−1) contained bioavailable organic matter that supported doubling times (14 to 62 h) and cell-specific production rates (0.0485 to 0.261 pmol C per cell per hour) comparable to those observed for surface waters (17 to 20 h; 0.105 to 0.124 pmol C per cell per hour). The relatively high specific rates of dissimilatory and assimilatory metabolism indicate a subsurface source of labile carbon to the groundwater (e.g., secondary production and/or chemoautotrophy). Our results link variations in UFA hydrobiogeochemistry to the physiology of its groundwater communities, providing a basis to develop new hypotheses related to microbial carbon cycling, trophic hierarchy, and processes generating bioavailable organic matter in karstic aquifer ecosystems.
Can we reliably reconstruct the mid-Pliocene Warm Period with sparse data and uncertain models?
Authors: Annan James D. , Hargreaves Julia C. , Mauritsen Thorsten , McClymont Erin , Ho Sze Ling
Published: September 2024

Abstract. We present a reconstruction of the surface climate of the mid-Pliocene Warm Period (mPWP), specifically Marine Isotope Stage (MIS) KM5c or 3.205 Ma. We combine the ensemble of climate model simulations, which contributed to the Pliocene Model Intercomparison Project (PlioMIP), with compilations of proxy data analyses of sea surface temperature (SST). The different data sets we considered are all sparse with high uncertainty, and the best estimate of annual global mean surface air temperature (SAT) anomaly varies from 2.1 up to 4.8 °C depending on the data source. We argue that the latest PlioVAR analysis of alkenone data is likely more reliable than other data sets we consider, and using this data set yields an SAT anomaly of 3.9±1.1 °C, with a value of 2.8±0.9 °C for SST (all uncertainties are quoted at 1 standard deviation). However, depending on the application, it may be advisable to consider the broader range arising from the various data sets to account for structural uncertainty. The regional-scale information in the reconstruction may not be reliable as it is largely based on the patterns simulated by the models.