bluuebunny/crossref_metadata_2025_split huggingface dataset:
Association of social isolation with health status among community-dwelling Chinese older adults living with homecare services: a cross-sectional survey in Hong Kong
Authors: Wong Eliza Lai-Yi , Qiu Hong , Cheung Annie Wai-Ling , Leung Hera Hiu-Wah , Chen Frank Youhua , Yeoh Eng-Kiong 
Published: June 2023

BackgroundDefined as having few social relationships or infrequent social contact with family, friends, and the community, social isolation is a public health crisis. We aimed to evaluate the prevalence of social isolation and explore the association between social isolation and health status among community-dwelling Chinese Older Adults living with homecare services.MethodsThis is a cross-sectional survey with a structured questionnaire conducted among older adults aged ≥60 in the Central Kowloon District of Hong Kong during 2017–2018. Social isolation was assessed by the Lubben Social Network Scale-6 and a score less than 12 was defined as socially isolated. Six aspects of health status including fall risk, cognitive function, depression, activities of daily living (ADL), instrumental activities of daily living (IADL), and functional mobility were measured by standardized instruments. Multi-criteria decision analysis (MCDA) was applied to estimate an index to represent the overall health status of the respondents. Multivariate logistic/linear regression models were applied to examine the associations between social isolation and health status after adjusting the sociodemographic characteristics.ResultsAmong the 1,616 participants included in this analysis, the mean age was 80.9 years, 66.3% were female and 41.4% were identified as socially isolated. Compared with the non-isolated group, the socially isolated group had higher proportions of males, divorced or unmarried, ever smoking and drinking, living alone, and living in public housing without religion. After adjusting for confounders, the odds ratios (OR) comparing the socially isolated vs. non-isolated groups were 2.52 (95%CI: 1.79, 3.56) for high fall risk, 1.51 (1.17, 1.94) for cognitive impairment, and 1.78 (1.31, 2.43) for depression. The socially isolated group increased the odds of abnormal ADL, IADL, and functional mobility by 105–150%, and decreased the overall health score by 5.30 (3.42, 7.18).ConclusionWe demonstrated the association of social isolation with poorer physical function and mental health and overall health status among the community-dwelling Chinese older adults living with homecare services. These findings provided new knowledge about the association of social isolation with both physical and mental function for daily living even for those receiving an integrated homecare service in the community. It implies that an unmet healthcare need existed when comparing the service scope of the current homecare services in the community. It also highlighted the need for targeted prevention and intervention initiatives among community-dwelling old adults to alleviate social isolation for better health and good functioning in the community.
A pilot study of occupational exposure to ultrafine particles during 3D printing in research laboratories
Authors: Felici Giorgio , Lachowicz Joanna Izabela , Milia Simone , Cannizzaro Emanuele , Cirrincione Luigi , Congiu Terenzio , Jaremko Mariusz , Campagna Marcello , Lecca Luigi Isaia 
Published: June 2023

Introduction3D printing is increasingly present in research environments, and could pose health risks to users due to air pollution and particulate emissions. We evaluated the nanoparticulate emissions of two different 3D printers, utilizing either fused filament fabrication with polylactic acid, or stereolithography (SLA) with light curing resin.MethodsNanoparticulate emissions were evaluated in two different research environments, both by environmental measurements in the laboratory and by personal sampling.ResultsThe SLA printer had higher nanoparticulate emissions, with an average concentration of 4,091 parts/cm3, versus 2,203 particles/cm3 for the fused filament fabrication printer. The collected particulate matter had variable morphology and elemental composition with a preponderance of carbon, sulfur and oxygen, the main byproducts.DiscussionOur study implies that when considering the health risks of particulate emissions from 3D printing in research laboratories, attention should be given to the materials used and the type of 3D printer.
Association between social support and mutual-support needs among the rural adults in China: a cross-sectional study
Authors: Tang Xi , Li Ling , Yao Keru , Luo Qin , Zhao Lu , Li Lu , Wang Zhihan , Fang Yijie , Huang Li , Yin Xinhong 
Published: June 2023

BackgroundIn rural China, there is now a huge gap between the supply and demand for old-age care. To close the gap, developing rural mutual old-age services is extremely important. The purpose of this study is to clarify the relationship among social support, mutual support need, and mutual support willingness.MethodsWe conducted an online questionnaire survey using a Chinese Internet research company; 2,102 valid responses were received. The measures comprised the Social Support Rating Scale, the Mutual Support Willingness Questionnaire, and the Mutual Support Needs Scale. We calculated Pearson correlations to explore the association of social support with mutual-support need and mutual-support-need willingness. Multivariate analyses were also conducted using these factors as dependent variables.ResultsThe total score for the mutual support need for the adults in rural areas was 58.0 ± 12.1 and 36.96 ± 6.40 for social support, approximately 86.8% of the participants were willing to participate in mutual support. Furthermore, mutual support needs were positively correlated with subjective support (p &lt; 0.01) and support utilization (p &lt; 0.01), but negatively correlated with willingness to support each other (p &lt; 0.05). The need for mutual support was also associated with age, sex, education level, dissatisfaction with the current economic situation, health status, and so on.ConclusionIt is necessary for government and health care providers to assess the different needs of rural older people and encourage individuals and organizations to provide mutual support for older people, especially to enhance emotional care for older people and improve their use of support. This is of great significance for developing mutual support services in rural China.
Commonly reported negative experiences on social media are associated with poor mental health and well-being among adolescents: results from the “LifeOnSoMe”-study
Authors: Skogen Jens Christoffer , Andersen Amanda Iselin Olesen , Finserås Turi Reiten , Ranganath Priya , Brunborg Geir Scott , Hjetland Gunnhild Johnsen 
Published: June 2023

IntroductionCyberbullying has been extensively studied and is associated with adverse mental health outcomes in adolescents. However, adolescents may also experience a range of other negative experiences, such as name-calling, threats, exclusion, and unwanted attention or contact from others. Few studies have investigated how adolescents’ mental health is affected by these relatively common and less severe types of negative experiences on social media (SOME). To assess the association between mental health outcomes and two aspects of negative experiences on SOME; unwanted attention and negative acts and exclusion.MethodsThis study is based on a survey conducted in 2020/21 consisting of 3,253 Norwegian adolescents (56% female, Mage = 17 years). Eight statements about negative experiences on SOME were asked and combined into two composite measures: “Unwanted attention from others” and “Negative acts and exclusion.” Dependent variables in regression models were symptoms of anxiety, symptoms of depression, and mental well-being. Covariates in all models included age, gender, subjective socioeconomic status, and amount of SOME-use.ResultsBoth “negative acts and exclusion” and “unwanted attention from others” on SOME were consistently positively associated with self-reported symptoms of depression and anxiety, and negatively associated with mental well-being in both crude and adjusted analysis.DiscussionThe results are indicative of an important relationship between experiencing negative events on SOME, even presumably less severe events, and worse mental health and well-being. Future research should extricate the potential causal relationship between negative experiences on SOME and mental health, as well as exploring potential precipitating and intermediating factors.
Assessment of the influence of using green tea waste and fish waste as soil amendments for biosolarization on the growth of lettuce (Lactuca sativa L. var. ramosa Hort.)
Authors: Zou Yunfan , Qiu Bixia , Lin Fanqi , Wu Wanfei , Guo Runlin , Xing Jiani , Zhao Zihui , Shpigelman Avi , Achmon Yigal 
Published: June 2023

IntroductionSafe and efficient treatment of organic waste is crucial to developing a sustainable food system around the world. Soil biosolarization (SBS) is a soil treatment technique that can use organic solid wastes to treat the soil in a way that is alternative to the use of chemical fumigants to improve soil fertility in agriculture.MethodsIn this study, two types of organic food wastes, green tea waste (GTW) and fish waste (FW), were evaluated for the feasibility of being applied as soil amendments within simulations of high-temperature cycle SBS. The evaluation was conducted by execution of three groups of measurements: gas and organic volatile emission profile, residual soil phytotoxicity and weed suppression, and cultivar growth (Lactuca sativa L. var. ramosa Hort.).Results and DiscussionGreen tea waste contributed to elevated levels of soil respiration and the evolution of signature volatile organic compounds during the simulated SBS. In the soil amended with green tea waste and then undergoing SBS the phyto compatibility was restored after residual phytotoxicity dissipation and a complete weed suppression was achieved. By using an application rate of 2.5% (w/w, mass fraction of green tea waste in total soil-waste mixture) green tea waste cultivar growth comparable to that of the non-treated soil (NTS) group was attained, with a more efficient nitrogen utilization and higher residual soil nitrogen content enabling the improvement of the continuous cropping system. FW at 1% (w/w, mass fraction of FW in total soil-waste mixture) promoted cultivar growth despite the significant reduction of the nitrogen (p value=0.02) and phosphorus (p value=0.03) contents in the cultivar leaves. A significant increase of the sodium content together with an increase of iron and chromium, which exceeded the permissible limit, were observed. These results provide new information about amendment selection for the SBS process.
Full-endoscopic removal of third ventricular colloid cysts: technique, results, and limitations
Authors: Unal Tugrul Cem , Sencer Altay , Dolas Ilyas , Gulsever Cafer Ikbal , Sahin Duran , Dolen Duygu , Ozata Musa Samet , Ozturk Metehan , Aras Yavuz , Aydoseli Aydin 
Published: June 2023

IntroductionColloid cysts (CCs) are rare benign lesions that usually arise from the roof of the third ventricle. They may present with obstructive hydrocephalus and cause sudden death. Treatment options include ventriculoperitoneal shunting, cyst aspiration, and cyst resection microscopically or endoscopically. This study aims to report and discuss the full-endoscopic technique for removing colloid cysts.Materials and methodsA 25°-angled neuroendoscope with an internal working channel diameter of 3.1 mm and a length of 122 mm is used. The authors described the technique of resecting a colloid cyst by a full-endoscopic procedure and evaluated the surgical, clinical, and radiological results.ResultsTwenty-one consecutive patients underwent an operation with a transfrontal full-endoscopic approach. The swiveling technique (grasping the cyst wall and rotational movements) was used for CC resection. Of these patients, 11 were female, and ten were male (mean age, 41 years). The most frequent initial symptom was a headache. The mean cyst diameter was 13.9 mm. Thirteen patients had hydrocephalus at admission, and one needed shunting after cyst resection. Seventeen patients (81%) underwent total resection; 3 (14%), subtotal resection; and 1 (5%), partial resection. There was no mortality; one patient had permanent hemiplegia, and one had meningitis. The mean follow-up period was 14 months.ConclusionEven though microscopic resection of cysts has been widely used as a gold standard, successful endoscopic removal has been described recently with lower complication rates. Applying angled endoscopy with different techniques is essential for total resection. Our study is the first case series to show the outcomes of the swiveling technique with low recurrence and complication rates.
Integrated oxidative stress score for predicting prognosis in stage III gastric cancer undergoing surgery
Authors: Liu Yu-hang , Meng Rui , Zhu Bing , Zhan Qi-qi , Yang Xin , Ding Guan-yi , Jia Chun-liang , Liu Qian-yu , Xu Wei-guo 
Published: June 2023

Objective: This study aimed to develop a novel scoring system, named the integrated oxidative stress score (IOSS), based on oxidative stress indices to predict the prognosis in stage III gastric cancer.Methods: Retrospective analysis of stage III gastric cancer patients who were operated on between January 2014 and December 2016 were enrolled into this research. IOSS is a comprehensive index based on an achievable oxidative stress index, comprising albumin, blood urea nitrogen, and direct bilirubin. The patients were divided according to receiver operating characteristic curve into two groups of low IOSS (IOSS ≤ 2.00) and high IOSS (IOSS &gt; 2.00). The grouping variable was performed by Chi-square test or Fisher’s precision probability test. The continuous variables were evaluated by t-test. The disease free survival (DFS) and overall survival (OS) were performed by Kaplan-Meier and Log-Rank tests. Univariate Cox proportional hazards regression models and stepwise multivariate Cox proportional hazards regression analysis were determined to appraise the potential prognostic factors for DFS and OS. A nomogram of the potential prognostic factors by the multivariate analysis for DFS and OS was established with R software. In order to assess the accuracy of the nomogram in forecasting prognosis, the calibration curve and decision curve analysis were produced, contrasting the observed outcomes with the predicted outcomes.Results: The IOSS was significantly correlated with the DFS and OS, and was a potential prognostic factor in patients with stage III gastric cancer. Patients with low IOSS had longer survival (DFS: χ2 = 6.632, p = 0.010; OS: χ2 = 6.519, p = 0.011), and higher survival rates. According to the univariate and multivariate analyses, the IOSS was a potential prognostic factor. The nomograms were conducted on the potential prognostic factors to improve the correctness of survival prediction and evaluate the prognosis in stage III gastric cancer patients. The calibration curve indicated a good agreement in 1-, 3-, 5-year lifetime rates. The decision curve analysis indicated that the nomogram’s predictive clinical utility for clinical decision was better than IOSS.Conclusion: IOSS is a nonspecific tumor predictor based on available oxidative stress index, and low IOSS is found to be a vigorous factor of better prognosis in stage III gastric cancer.
Hubungan Posisi Duduk Terhadap Kejadian Nyeri Punggung Bawah (Low Back Pain) Pada Penjahit Di Kelurahan Solor Kota Kupang Tahun 2017
Authors: Ikun Elisabeth Sri Intan , Nurina Rr. Listyawati , Kareri Dyah Gita Rambu 
Published: June 2023

Latar belakang : Low back pain merupakan suatu keluhan yang dapat menurunkan produktivitas kerja manusia. Low back pain jarang fatal namun nyeri yang dirasakan dapat membuat penderita mengalami penurunan kemampuan melakukan aktivitas sehari-hari, problema kesehatan kerja, dan banyak kehilangan jam kerja pada usia produktif maupun usia lanjut. Salah satu faktor risiko low back pain adalah faktor pekerjaan meliputi beban kerja, lama kerja dan sikap kerja.
Tujuan : Menganalisis hubungan posisi duduk terhadap kejadian nyeri punggung bawah (low back pain) pada penjahit di Kelurahan Solor Kota Kupang tahun 2017
Metode : Penelitian ini merupakan penelitian analitikal observasional dengan rancangan cross sectional yang dilakukan pada penjahit di KelurahanSolor Kota Kupang dengan cara pengisian kuesioner dan wawancara langsung. Teknik pengambilan sampel menggunakan total sampling dengan jumlah responden 34 orang yang memenuhi kriteria inklusi dan eksklusi. Data dianalisis menggunakan uji chi square.
Hasil : Dari penelitian ini didapatkan hasil dari 34 responden yang melakukan posisi duduk yang benar sebanyak 13 orang (38.2%) diantaranya terdapat responden dengan positif LBP sebanyak 4 orang (11.8%) dan negatif LBP sebanyak 9 orang (26.5%). Responden yang melakukan posisi duduk yang salah sebanyak 21 orang (61.8%) diantaranya terdapat responden dengan positif LBP sebanyak 16 orang (47.1%) dan negatif LBP sebanyak 5 orang (14.7%). Hasil uji statistik menggunakan uji chi-square, diperoleh nilai p=0.009 (p<0.05)
Kesimpulan : Terdapat hubungan yang bermakna antara posisi duduk terhadap kejadian nyeri punggung bawah (low back pain) pada penjahit di Kelurahan Solor Kota Kupang tahun 2017 dengan nilai p=0.009 (p<0.05)
Hubungan Pembelajaran Daring dengan Tingkat Stres Akademik Saat Pandemi COVID-19 pada Mahasiswa Fakultas Kedokteran.
Authors: Saudale Sarah Grace Neljti Wilhelmina Emmanuela , Folamauk Conrad Liab Hendricson , Trisno Idawati , Handoyo Nicholas Edwin 
Published: June 2023

Latar Belakang : Dengan terjadinya pandemi COVID-19 secara masif dan cepat pemerintah memutuskan untuk melakukan kebijakan berupa lockdown dan social distancing. Masyarakat diwajibkan mengikuti kegiatan Work from Home dan Study from Home. Perubahan metode pembelajaran menjadi pembelajaran daring menyebabkan adanya kendala dan hambatan yang dapat menimbulkan stres akademik pada mahasiswa. Tuntutan dan kesulitan dapat membuat mahasiswa mengalami penurunan prestasi akademik, penurunan konsentrasi belajar, kegagalan pendidikan, dan perkembangan psikologis terganggu.
Tujuan : Mengetahui hubungan pembelajaran daring dengan tingkat stres akademik saat pandemi COVID-19 pada mahasiswa Fakultas Kedokteran Universitas Nusa Cendana.
Metode : Metode penelitian yang digunakan adalah analitik kuantitatif dengan rancangan cross sectional yang dilakukan pada mahasiswa preklinik Fakultas Kedokteran Universitas Nusa Cendana dengan cara pengisian kuesioner. Teknik pengambilan sampel menggunakan stratified random sampling dengan jumlah responden 157 orang dari angkatan 2018, 2019 dan 2020 yang telah memenuhi kriteria inklusi dan eksklusi. Penelitian dianalisis secara univariat dan bivariat menggunakan uji koefisien Contigency. Hasil dan Pembahasan : Dari penelitian ini ditemukan bahwa dari 157 responden, terdapat 52,9% responden mengalami stres akademik, dan 47,1% responden tidak mengalami stres akademik Selain itu didapatkan hasil bahwa terdapat 51,6% responden mengalami pembelajaran daring yang sangat baik, dan 48,4% responden mengalami pembelajaran daring yang baik. Hasil uji bivariat menggunakaan uji koefisien Contigeny pada penelitian ini diperoleh hasil p=0,000 (p<0,05) yang menunjukkan adanya hubungan antara pembelajaran darig dengan tingkat stress akademik saat pandemi COVID-19 pada mahasiswa fakultas kedokteran.
Kesimpulan : Semakin baik berlangsungnya pembelajaran daring maka semakin menurunnya tingkat stres akademik.
Two coupled resonant-tunneling-diode oscillators with an air-bridged transmission line for high-power coherent terahertz radiation
Authors: Han Feifan , Shimura Takumi , Tanaka Hiroki , Suzuki Safumi 
Published: June 2023

Abstract
We developed a two-coupled resonant-tunneling-diode (RTD) terahertz (THz) oscillator with a high output power to fill the THz gap. We arranged two RTD mesas in a low-loss air-bridged transmission line for strong mutual coupling and generation of a unique operation mode and integrated a planar ring-slot antenna for efficient THz radiation while satisfying the impedance matching condition. The device structure was fabricated using a multilayer resist process and a carefully controlled wet etching process. The fabricated device exhibited coherent operation and a high output power of approximately 0.24 mW at a high frequency of 925 GHz.
Fast Kernel-based Signal Subspace Estimates for Line Spectral Estimation
Authors: Kiser Shawn L. , Margerit Pierre , Rébillat Marc , Guskov Mikhail , Ranc Nicolas 
Published: June 2023

<p>This paper introduces the problem formulation of kernel-based subspace estimates for line spectral estimation. Subspace methods suffer from cubic time complexity: specifically, the original ESPRIT algorithm relies on obtaining the signal's singular vectors by SVD/EVD. We show that the original ESPRIT algorithm does not need the signal's singular vectors to exploit rotational invariance, but a set of vectors that span the signal model's Vandermonde matrix are sufficient. To exploit this, we introduce two FFT-based ESPRIT algorithms which have lower time complexities than the original ESPRIT algorithm. These fast algorithms rely on the usage of the DFT kernel, i.e.~a Fourier transform on the row space of the data (Hankel) matrix. The preferred method, named FFT-ESPRIT, achieves quasi-linear time complexity due to a fast Hankel matrix-Kernel matrix product algorithm and extensive usage of the FFT. The kernel-based subspace estimates are approximate in nature, and yet perturbation bounds reveal a noise regime in which FFT-ESPRIT exceeds ESPRIT's performance. We demonstrate the behavior of the algorithm across different SNR and super-resolution regimes and show that the estimated signal subspace is statistically efficient. Numerical simulations show that FFT-ESPRIT is more robust than the ESPRIT algorithm at the very low SNRs, and has a nearly identical performance as ESPRIT at higher SNRs. </p>
A Statistical Analysis Model of Wind Power Generation Forecasting for the Western Region of India
Authors: Mahata Sulagna , Harsh Piyush , Shekher Vineet , Rai Pankaj 
Published: June 2023

<p>Wind energy has witnessed an upswing, with the improvement in current technology and cost-effective electricity production but due to uncertain wind behaviour and weather trends, it is essential to forecast wind energy. The paper presents the Autoregressive Integrated Moving Average model, a statistical analysis model, to forecast future power generation values, for the Kutch region of Gujarat, India. The historical wind power generation data and weather parameters have been taken into consideration for the predictive analysis of future trends in power generation. Wind power generation is dependent on various weather factors like wind speed, wind direction, temperature, humidity, air density, etc. The historical data obtained from Central Electricity Authority (CEA), India, and weather data collected from regional weather stations have been made into use for the forecast. A summary of the results is shown using the performance metrics for model evaluation, indicating that the model can forecast wind power generation with higher accuracy. </p>