bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Image-Based Approach to Detecting Structural Similarity Among Mixed Integer Programs
Authors: Steever Zachary , Murray Chase , Yuan Junsong , Karwan Mark , Lübbecke Marco 
Published: March 2022

Operations researchers have long drawn insight from the structure of constraint coefficient matrices (CCMs) for mixed integer programs (MIPs). We propose a new question: Can pictorial representations of CCM structure be used to identify similar MIP models and instances? In this paper, CCM structure is visualized using digital images, and computer vision techniques are used to detect latent structural features therein. The resulting feature vectors are used to measure similarity between images and, consequently, MIPs. An introductory analysis examines a subset of the instances from strIPlib and MIPLIB 2017, two online repositories for MIP instances. Results indicate that structure-based comparisons may allow for relationships to be identified between MIPs from disparate application areas. Additionally, image-based comparisons reveal that ostensibly similar variations of an MIP model may yield instances with markedly different mathematical structures.Summary of Contribution: This paper presents a methodology for comparing mixed integer programs (MIPs) from any research domain based on the structure of the constraint coefficient matrices for one or more instances of a model. Specifically, computer vision and deep learning techniques are used to extract structural features and measure the similarity between these images. This process is agnostic to application area and instead focuses solely on mathematical structure. As a result, this methodology offers a fundamentally new way for operations researchers to view MIP similarity and highlights similarities between research problems that may have previously been viewed as unrelated.
Taxi Drivers’ Response to Cancellations and No-Shows: New Evidence for Reference-Dependent Preferences
Authors: Duong Hai Long , Chu Junhong , Yao Dai 
Published: March 2022

We study how daily labor supply responds to unanticipated earnings shocks among Singapore’s taxi drivers using a novel identification strategy that uses idiosyncratic variation in booking cancellations and passenger no-shows (CNS) that drivers repeatedly receive. Our results provide new and more compelling evidence in support of the income-targeting model of labor supply. Not only are the average responses on the extensive margin consistent with the income-targeting model, but the responses on the intensive margin and the heterogeneous responses at different income levels and across driver characteristics are as well. We find that drivers work longer and earn more per hour following CNS, and the effects are robust after controlling for rich fixed effects, market supply and demand conditions, and drivers’ sunk cost of time. The CNS effects on ending a shift exhibit a U-shaped pattern, are strongest when cumulative income is close to the average shift income, and become insignificant when the income level is too low or too high. The effects are most pronounced in the first hour of CNS and fade away quickly afterward. Drivers achieve higher productivity by reducing break time, taking more jobs, driving faster, driving to places with more earning opportunities, and having more time with passengers on board. Drivers choose the response strategies that are complementary to their abilities and circumstances such as schedule flexibility and potential for productivity improvement: those with flexible working schedules tend to prolong their shifts, whereas those with flexible earnings rates tend to increase their subsequent productivity. Our novel identification strategy strengthens the empirical literature on daily labor supply, and our findings of heterogeneity effects offer new insights on income-targeting behaviors. This paper was accepted by Matthew Shum, marketing. Funding: This work was supported by a Singapore Ministry of Education Social Science Research Thematic Grant [GrantMOE2016-SSRTG-059]. Supplemental Material: Data and the online appendices are available at https://doi.org/10.1287/mnsc.2022.4349 .
Immediacy Provision and Matchmaking
Authors: An Yu , Zheng Zeyu 
Published: March 2022

Dealers can choose between two intermediation methods: providing immediacy to customers using their own inventory and making matches between customers’ order flows. We show that dealers have an incentive to prioritize inventory turnover for immediacy provision rather than making matches between customers. Compared with a counterfactual scenario without this incentive, dealers in equilibrium provide immediacy to more customers in order to extract extra rents. Compared with the counterfactual, this incentive decreases equilibrium price for immediacy but increases the bid–ask spread. The incentive to prioritize immediacy provision lowers welfare for assets with high substitutability but raises welfare for assets with low substitutability. Our analysis has potential policy implications for the Volcker rule, which can be viewed as the counterfactual. This paper was accepted by Agostino Capponi, finance. Supplemental Material: The online appendix is available at https://doi.org/10.1287/mnsc.2022.4355 .
The Supply and Effectiveness of Investor Relations in Insider- vs. Outsider-Oriented Markets
Authors: Bazhutov Dmitry , Betzer André , Brochet Francois , Doumet Markus , Limbach Peter 
Published: March 2022

Using annual survey-based investor relations (IR) data for a panel of European companies, we document that the supply and effectiveness of IR varies with country- and firm-level demand. Relative to their industry peers, firms from insider-oriented countries have larger IR staff, which predicts better IR rankings. Better IR is associated with greater visibility, information assimilation, and valuation, with visibility and assimilation being significantly greater for firms from insider-oriented countries. Within such countries, firms with greater outsider orientation have higher capital market benefits. Furthermore, using Markets in Financial Instruments Directive II as a shock to analyst coverage, we find an incrementally larger association between IR and visibility in insider-oriented countries after 2017. Overall, the evidence suggests that the supply of IR in insider-oriented markets has reached a high level, acting as a viable mechanism to improve firms’ information environment. However, within those countries, IR demand still varies significantly, with outsider-oriented firms showing greater IR effectiveness. This paper was accepted by Brian Bushee, accounting. Supplemental Material: The data files and online appendix are available at https://doi.org/10.1287/mnsc.2022.4368 .
Guide to Hormone replacement therapy (HRT)
Authors: Holloway Debby 
Published: March 2022

The menopause can affect all women, and the way it impacts them will be individual and unique. Some women will have minimal symptoms and will not require any medical treatment; others may require lifestyle changes and support. However, some will have significant symptoms that would impact on their quality of life, daily functioning and work. These women will require help in the form of lifestyle adjustment, prescribed alternatives, complementary therapies or hormone replacement therapy (HRT) – or a combination of all of the above. This Guide will provide an overview of HRT, the symptoms women experience and how these can be managed with HRT.
Experiences and concerns of health workers throughout the first year of the COVID-19 pandemic in the UK: A longitudinal qualitative interview study
Authors: Borek Aleksandra J. , Pilbeam Caitlin , Mableson Hayley , Wanat Marta , Atkinson Paul , Sheard Sally , Martindale Anne-Marie , Solomon Tom , Butler Christopher C. , Gobat Nina , Tonkin-Crine Sarah 
Published: March 2022

Objective
To identify the experiences and concerns of health workers (HWs), and how they changed, throughout the first year of the COVID-19 pandemic in the UK.

Methods
Longitudinal, qualitative study with HWs involved in patient management or delivery of care related to COVID-19 in general practice, emergency departments and hospitals. Participants were identified through snowballing. Semi-structured telephone or video interviews were conducted between February 2020 and February 2021, audio-recorded, summarised, and transcribed. Data were analysed longitudinally using framework and thematic analysis.

Results
We conducted 105 interviews with 14 participants and identified three phases corresponding with shifts in HWs’ experiences and concerns. (1) Emergency and mobilisation phase (late winter-spring 2020), with significant rapid shifts in responsibilities, required skills, and training, and challenges in patient care. (2) Consolidation and preparation phase (summer-autumn 2020), involving gradual return to usual care and responsibilities, sense of professional development and improvement in care, and focus on learning and preparing for future. (3) Exhaustion and survival phase (autumn 2020-winter 2021), entailing return of changes in responsibilities, focus on balancing COVID-19 and non-COVID care (until becoming overwhelmed with COVID-19 cases), and concerns about longer-term impacts of unceasing pressure on health services. Participants’ perceptions of COVID-19 risk and patient/public attitudes changed throughout the year, and tiredness and weariness turned into exhaustion.

Conclusions
Results showed a long-term impact of the COVID-19 pandemic on UK HWs’ experiences and concerns related to changes in their roles, provision of care, and personal wellbeing. Despite mobilisation in the emergency phase, and trying to learn from this, HWs’ experiences seemed to be similar or worse in the second wave partly due to many COVID-19 cases. The findings highlight the importance of supporting HWs and strengthening system-level resilience (e.g., with resources, processes) to enable them to respond to current and future demands and emergencies.
Extended post-partum modern contraceptive utilization and associated factors among women in Arba Minch town, Southern Ethiopia
Authors: Mesfin Yesgat Yibeltal , Gultie Ketema Tekilemariam , Abebe Dessalegn Samuel , Wallelign Bayabil Abraham , Argaw Enyew Muche , Habte Dagnaw Eyaya 
Published: March 2022

Introduction
Post-partum family planning is a novel strategy to reduce maternal and neonatal mortality by preventing unwanted pregnancy and unsafe abortion. However, little was done on community-based design to assess modern contraceptive use during an extended postpartum period in southern Ethiopia. Therefore, this study aimed to assess modern contraceptive use during extended postpartum period and factors associated among women who gave birth in the previous twelve months in southern Ethiopia.

Methods
A community-based cross-sectional study was conducted among 416 women in Arba Minch town. A systematic random sampling technique was employed to select the enrolled women. Data were collected using a structured and pretested questionnaire. The data were entered into Epi-Data version 4.6 then exported to statically package of social science (SPSS) version 25 for data analysis.

Result
Among enrolled postpartum women, 64.7% were used modern contraceptives for the last 12 months. Women were more likely to use a modern contraceptive during the extended period of postpartum if they resumed sexual intercourse (AOR:7.4 [4.08, 13.23]), received post-partum family planning counseling (AOR: 3.2 [1.95, 5.28]), and if they resumed menses (AOR: 5.3 [3.12, 9.15]) than the counterpart. Being young age women (AOR: 3.2 [1.05, 9.82]) compared to age above 35 years and married (AOR:3.2 [1.17–10.28]) compared to currently unmarried were significantly associated factors for modern contraceptive use during the extended period of postpartum.

Conclusion
The level of modern contraceptive utilization during the extended postpartum period was satisfactory. Therefore, in light of this finding, there is a need to improve the strengthening and scale-up antenatal and postnatal counseling of contraceptive use during the extended postpartum period, advice on preceding the return of menses, and give better attention for older age and unmarried women education on family planning.
Depression risk associated with the use of 5α-reductase inhibitors versus α-blockers: A retrospective cohort study in South Korea
Authors: Yeon Bora , Suh Ah Young , Choi Eunmi , Kim Bonggi , Noh Eunsun , Chung Soo Youn , Han Soon Young 
Published: March 2022

Background
One of the most prescribed treatments for benign prostatic hyperplasia (BPH) is 5α-reductase inhibitors (5ARI). Europe experienced recent safety issues involving 5ARI and depression symptoms, with similar findings being seen in Western countries. The South Korea has updated the drug label in accordance with European recommendations, but the relevant evidence was insufficient. This study compared the use of 5ARI versus α-blocker (AB) as a treatment for BPH and related risks of depression to provide evidence based on the Korean population.

Methods
This was a retrospective cohort study using South Korea’s Health Insurance Review & Assessment Service claim data from 2011 to 2017. New patients diagnosed in men with BPH and taking medications that contained either 5ARI or AB between July 1, 2013, and June 30, 2015, were included (n = 1,461 5ARI; n = 18,650 AB). The primary outcome was depression defined per the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD-10: F32-34, F38, F412, F432). Logistic regression was used to implement 1:1 propensity score (PS) matching of patients taking 5ARI to those taking AB to adjust for confounding. Cox proportional hazard models were used to compare the risk of depression associated with 5ARI versus AB.

Results
Balance in baseline characteristics between the treatment groups were achieved within PS matched pairs (1,461 pairs). Compared to the AB medication group, the 5ARI group had lower depression (HR: 0.69, 95% CI: [0.51–0.92]). However, we could not find a clinically relevant, statistical difference after PS matching (HR: 0.91, 95% CI: [0.61–1.36]).

Conclusions
The risk of depression associated with 5ARI was not meaningfully different from AB in Korea, which suggests that medical officials should provide the most appropriate medication for BPH patients by considering both treatment benefits and depression risk.
The volume of brisk walking is the key determinant of BMD improvement in premenopausal women
Authors: Lan Yong-Sheng , Feng Yu-Juan 
Published: March 2022

Summary
Osteoporosis is an increasing health problem in postmenopausal women. Our findings indicated that long-term brisk walking with a volume greater than 16 per week is effective for improving BMD in premenopausal women.

Purpose
To examine the effects of brisk walking on bone mineral density (BMD) in premenopausal women, and further determine the effective frequency, intensity, time and volume (frequency x duration) of brisk walking for training strategy prescription.

Methods
222 healthy premenopausal women were recruited for BMD measurement. According to the survey of their physical activity level, 84 subjects (age: 46±1.8) whose physical activity index ≥40 were categorized into the brisk walking group, and 138 subjects (age: 47±2.2) whose physical activity index <40 were assigned to the sedentary group. The BMD of these two groups were statistically compared with an independent t test. Next, 35 subjects from the original sedentary group were recruited for BMD measurement after 2-year moderate brisk walking. According to the volume of physical activity per week, they were divided into the control group (n = 10, aged 49±0.9), volume 8 group (n = 4, aged 48±1.2), volume 12 group (n = 7, aged 49±1.4), volume 16 group (n = 8, aged 49±1.3), and volume 20 group (n = 6, aged 49±1.5). ANOVA was used to analyze BMD before and after brisk walking among the five groups.

Results
The BMD in the brisk walking group (1.00±0.008 g/cm2) was significantly higher than that in the sedentary group (0.89±0.008 g/cm2) (P<0.001). Stepwise regression analysis revealed that the volume of brisk walking was significantly correlated with BMD (P<0.001). In particular, brisk walking with a volume greater than 16 (a score of duration up to 4 and a score of frequency up to 4 or 5) per week is effective for improving BMD in premenopausal women (P = 0.03, P = 0.002, respectively).

Conclusions
Long-term brisk walking is an efficient way to improve BMD. Taking brisk walks for 30 minutes per day 3 or more times per week (volume>16) is recommended to prevent bone loss in premenopausal women.
Level and correlates of empathy and altruism during the Covid-19 pandemic. Evidence from a representative survey in Germany
Authors: Hajek André , König Hans-Helmut 
Published: March 2022

Aim
Our purpose was to clarify the level and correlates of empathy and altruism in the German population during the Covid-19 pandemic.

Methods
A nationally representative survey (n = 3,075) was conducted in August/September 2021. To measure empathy, a short scale based on the Interpersonality Reactivity Index (IRI; German version: Saarbrucken personality questionnaire, SPF) was used (SPF-K). Based on the International Personality Item Pool (IPIP; IPIP-5F30F-R1), the subscale altruism was used to quantify altruism.

Results
The average altruism score was 3.3 (SD: 0.7), ranging from 1 to 5. Moreover, the average empathy score was 13.1 (SD: 2.8), ranging from 4 to 20. The level of empathy significantly differed between the subgroups. For example, high levels of empathy were identified among women (average: 13.7, SD: 2.7), individuals with children (average: 13.5, SD: 2.8), and individuals with migration background (average: 13.6, SD: 2.8). Effect sizes were mostly small. Similar differences (in terms of effect size) were identified between these groups regarding altruism. Additionally, regressions showed that higher levels of both empathy and altruism were associated with being female, younger age, having children, sports activities and having at least one chronic disease. Moreover, vaccination against Covid-19 was only associated with higher altruism, but not with higher empathy.

Conclusion
Our study emphasized the moderately high level of empathy and altruism in Germany during times of the pandemic. Identifying the correlates of these factors may help to address individuals with very low levels of these factors.
Kegiatan Pelestarian dan Promosi Candi Kimpulan di Area Perpustakaan Universitas Islam Indonesia
Authors: Hidayatullah Fauzan , Nashihuddin Wahid , Putra Kadek Aryana Dwi 
Published: March 2022

Candi Kimpulan merupakan candi peninggalan kerajaan hindu yang berlokasi di area Perpustakaan UII. Keberadaan Candi Kimpulan sampai saat ini dalam kondisi baik dan semakin dikenal oleh masyarakat luas. Kajian ini bertujuan untuk mengetahui keg iatan pelestarian dan promosi Candi Kimpulan yang berada di area Perpustakaan UII. Data kajian ini menggunakan data kualitatif – deskriptif, yang bersumber dari kegiatan observasi, wawancara, dan dokumentasi. Hasil kajian menunjukkan bahwa kegiatan pelestarian Candi Kimpulan dilakukan oleh BPCB DIY dengan cara evakuasi, restorasi, dan konservasi. Sedangkan Perpustakaan UII (pustakawan) membantu tugas edukator museum dalam mempromosikan wisata budaya Candi Kimpulan ke masyarakat. Kegiatan promosi dilakukan dengan tatap muka, penyebaran brosur, dan website Perpustakaan UII.
Strategi Menciptakan Perpustakaan Kekinian Sebagai Upaya Menjaga Eksistensi di Era Revolusi Industri 4.
Authors: Ganggi Roro Isyawati Permata 
Published: March 2022

Perpustakaan merupakan tempat terpercaya untuk mencari informasi yang kredibel, namun di sisi lain beberapa pihak merasa bahwa perpustakaan merupakan tempat yang kuno dan kurang menarik. Sehingga perlu disusun suatu strategi untuk menciptakan perpustakaan kekinian sebagai upaya menjaga eksistensi di era revolusi industri 4.0. Metode yang digunakan dalam penulisan artikel ini adalah metode literature review. Literature review dipilih karena artikel ini merupakan artikel konseptual. Hasil yang didapatkan dalam artikel ini adalah perpustakaan dapat melakukan dua strategi dalam menciptakan perpustakaan kekinian, yaitu: dari aspek perpustakaan sebagai organisasi dan dari pustakawan sebagai pengelola perpustakaan. Dari sisi perpustakaan dapat dilakukan dengan: (1) menyediakan working space; (2) desain yang Instagramable; (3) dukungan hot spot cepat; (4) pemanfaatan AI, VR dan AR; (5) pemanfaatan sosial media. Sedangkan dari aspek pustakawan, maka pustakawan dapat bertransformasi sehingga dapat memainkan beberapa peran, yaitu: (1) cybrarian; (2) content creator; (3) social media specialist; (4) information consultant; (5) infographics maker; (6) subject specialist.
Library Anxiety pada Mahasiswa Tingkat Akhir: Studi Kualitatif di UPT Perpustakaan Politeknik Negeri Semarang
Authors: Ravena Rika , Dewi Athanasia Octaviani Puspita 
Published: March 2022

Penelitian ini membahas library anxiety pada mahasiswa tingkat akhir di UPT Perpustakaan Politeknik Negeri Semarang. Penelitian ini bertujuan untuk mengetahui dan mendeskripsikan bagaimana library anxiety yang terjadi pada mahasiswa tingkat akhir di UPT Perpustakaan Politeknik Negeri Semarang. Metode penelitian yang digunakan adalah metode kualitatif dengan pendekatan studi kasus, agar penelitian dapat mengkaji pengalaman informan secara lebih mendalam. Data penelitian diperoleh melalui metode observasi, wawancara, dan studi dokumen dengan mengkaji enam faktor library anxiety milik Multidimensional Library Anxiety Scale (MLAS) yang dikembangkan oleh Van Kampen, kemudian dianalisis menggunakan metode analisis data model alir Miles dan Hubberman. Hasil penelitian menunjukkan bahwa library anxiety pada masing-masing mahasiswa tingkat akhir memiliki pengalaman yang berbeda-beda. Terdapat dua faktor yang paling banyak dialami oleh informan, yaitu berkaitan dengan pentingnya pemahaman tentang tata cara penggunaan perpustakaan dan kenyamanan yang dirasakan dalam menggunakan teknologi. Sementara itu, penelitian menghasilkan faktor yang paling berpengaruh terhadap library anxiety pada mahasiswa tingkat akhir, khususnya di UPT Perpustakaan Politeknik Negeri Semarang, diantaranya meliputi: banyaknya fasilitas dan layanan yang tersedia, pentingnya kegiatan pendidikan pemakai, intensitas kunjungan, hambatan dengan staf, dan kurangnya informasi terkait sumber online yang tersedia di perpustakaan.
Microstructure-dependent photoelectrocatalytic activity of heterogeneous ZnO–ZnS nanosheets
Authors: Liang Yuan-Chang , Huang Chia-Hung 
Published: March 2022

Abstract
ZnS crystallite-loaded ZnO sheet composites were successfully synthesized through vulcanization of hydrothermally derived porous ZnO sheet templates. The sulfur precursor (Na2S: 0.05–0.25 M) concentration affects the ZnS loading content and surface morphology of the ZnO–ZnS composites. A higher sulfur precursor concentration increased the ZnS loading content and decreased the porosity of the ZnO–ZnS composites. The ZnO–ZnS sheet composites with the atomic composition ratio of ZnO larger than that of the decorated ZnS exhibited an enhanced photoactivity. By contrast, the overloading of ZnS crystallites on the ZnO template decreased photoactivity. The ZnO–ZnS sheet composite with a S/O atomic ratio of 0.61 exhibits the highest photoactivity among various samples. The enhanced charge separation efficiency because of the formation of ZnO/ZnS heterojunctions and porous structure allowed the synthesis of the ZnO–ZnS composite via hydrothermal vulcanization with 0.05 M Na2S, and shows the higher photoelectrochemical (PEC) degradation ability towards Rhodamine B solution among various samples. The scavenger tests and the proposed PEC-degradation mechanism demonstrate that superoxide radicals are the main active species for the degradation of the RhB solution. The experimental results herein show that the porous ZnO–ZnS sheet composite with a suitable phase ratio is promising for photoelectrocatalyst applications.