bluuebunny/crossref_metadata_2025_split huggingface dataset:
Constant Regret Resolving Heuristics for Price-Based Revenue Management
Authors: Wang Yining , Wang He 
Published: January 2022

Title: Constant Regret Resolving Heuristics for Price-Based Revenue Management Network revenue management (NRM) and its corresponding pricing question is one of the most fundamental problems in operations management. To alleviate the curse of dimensionality and the prohibitive cost of computing an exact solution using dynamic programming, computationally efficient resolving algorithms are proposed. The state-of-the-art analysis of the resolving heuristic establishes a logarithmic additive regret for price-based NRM problems. In “Constant Regret Resolving Heuristics for Price-Based Revenue Management,” Y. Wang and H. Wang from the University of Florida and Georgia Institute of Technology, respectively, significantly advance the state-of-the-art analysis by showing a constant regret for resolving heuristics. Their theoretical advance is made possible by a novel, direct analysis of the exact DP solution.
Cement-in-cement revision of the femur in infected hip arthroplasty in 89 patients across two centres
Authors: Fishley William G. , Selvaratnam Veenesh , Whitehouse Sarah L. , Kassam Al-Amin M. , Petheram Timothy G. ,   *On behalf of the Northumbria Revision Arthroplasty Group, and the Exeter Hip Group
Published: January 2022

Aims Femoral cement-in-cement revision is a well described technique to reduce morbidity and complications in hip revision surgery. Traditional techniques for septic revision of hip arthroplasty necessitate removal of all bone cement from the femur. In our two centres, we have been using a cement-in-cement technique, leaving the distal femoral bone cement in selected patients for septic hip revision surgery, both for single and the first of two-stage revision procedures. A prerequisite for adoption of this technique is that the surgeon considers the cement mantle to be intimately fixed to bone without an intervening membrane between cement and host bone. We aim to report our experience for this technique. Methods We have analyzed patients undergoing this cement-in-cement technique for femoral revision in infection, and present a consecutive series of 89 patients. Follow-up was undertaken at a mean of 56.5 months (24.0 to 134.7) for the surviving cases. Results Seven patients (7.9%) required further revision for infection. Ten patients died of causes unrelated to their infection before their two-year review (mean 5.9 months; 0.9 to 18.6). One patient was lost to follow-up at five months after surgery, and two patients died of causes unrelated to their hip shortly after their two-year review was due without attending. Of the remaining patients, 69 remained infection-free at final review. Radiological review confirms the mechanical success of the procedure as previously described in aseptic revision, and postoperative Oxford Hip Scores suggest satisfactory functional outcomes. Conclusion In conclusion, we found that retaining a well-fixed femoral cement mantle in the presence of infection and undertaking a cement-in-cement revision was successful in 82 of the patients (92.1%) in our series of 89, both in terms of eradication of infection and component fixation. These results are comparable to other more invasive techniques and offer significant potential benefits to the patient. Cite this article: Bone Joint J 2022;104-B(2):212–220.
Assessment of deep vein thrombosis using routine pre- and postoperative duplex Doppler ultrasound in patients with pelvic trauma
Authors: Cerbasi Simone , Bernasconi Alessio , Balato Giovanni , Dimitri Federica , Zingaretti Oriana , Orabona Gianclaudio , Pascarella Raffaele , Mariconda Massimo 
Published: January 2022

Aims The aims of this study were to assess the pre- and postoperative incidence of deep vein thrombosis (DVT) using routine duplex Doppler ultrasound (DUS), to assess the incidence of pulmonary embolism (PE) using CT angiography, and to identify the factors that predict postoperative DVT in patients with a pelvic and/or acetabular fracture. Methods All patients treated surgically for a pelvic and/or acetabular fracture between October 2016 and January 2020 were enrolled into this prospective single-centre study. The demographic, medical, and surgical details of the patients were recorded. DVT screening of the lower limbs was routinely performed using DUS before and at six to ten days after surgery. CT angiography was used in patients who were suspected of having PE. Age-adjusted univariate and stepwise multiple logistic regression analysis were used to determine the association between explanatory variables and postoperative DVT. Results A total of 191 patients were included. A DVT was found preoperatively in 12 patients (6.3%), of which six were proximal. A postoperative DVT was found in 42 patients (22%), of which 27 were proximal. Eight patients (4.2%) had a PE, which was secondary to a DVT in three. None of the 12 patients in whom a vena cava filter was implanted prophylactically had a PE. Multivariate logistic regression analysis indicated that the association with the need for spinal surgery (odds ratio (OR) 19.78 (95% confidence interval (CI) 1.12 to 348.08); p = 0.041), intramedullary nailing of a long bone fracture (OR 4.44 (95% CI 1.05 to 18.86); p = 0.043), an operating time > two hours (OR 3.28 (95% CI 1.09 to 9.88); p = 0.035), and additional trauma surgery (OR 3.1 (95% CI 1.03 to 9.45); p = 0.045) were statistically the most relevant independent predictors of a postoperative DVT. Conclusion The acknowledgement of the risk factors for the development of a DVT and their weight is crucial to set a threshold for the index of suspicion for this diagnosis by medical staff. We suggest the routine use of the DUS screening for DVT in patients with a pelvic and/or acetabular fracture before and six to ten days after surgery. Cite this article: Bone Joint J 2022;104-B(2):283–289.
Fibular strut allograft or bone cement for reconstruction after curettage of a giant cell tumour of the proximal femur
Authors: Jamshidi Khodamorad , Bagherifard Abolfazl , Mohaghegh Mahmoud Reza , Mirzaei Alireza 
Published: January 2022

Aims Giant cell tumours (GCTs) of the proximal femur are rare, and there is no consensus about the best method of filling the defect left by curettage. In this study, we compared the outcome of using a fibular strut allograft and bone cement to reconstruct the bone defect after extended curettage of a GCT of the proximal femur. Methods In a retrospective study, we reviewed 26 patients with a GCT of the proximal femur in whom the bone defect had been filled with either a fibular strut allograft (n = 12) or bone cement (n = 14). Their demographic details and oncological and nononcological complications were retrieved from their medical records. Limb function was assessed using the Musculoskeletal Tumor Society (MSTS) score. Results Mean follow-up was 116 months (SD 59.2; 48 to 240) for the fibular strut allograft group and 113 months (SD 43.7; 60 to 192) for the bone cement group (p = 0.391). The rate of recurrence was not significantly different between the two groups (25% vs 21.4%). The rate of nononcological complications was 16.7% in the strut allograft group and 42.8% in the bone cement group. Degenerative joint disease was the most frequent nononcological complication in the cement group. The mean MSTS score of the patients was 92.4% (SD 11.5%; 73.3% to 100.0%) in the fibular strut allograft group and 74.2% (SD 10.5%; 66.7% to 96.7%) in the bone cement group (p < 0.001). Conclusion Given the similar rate of recurrence and a lower rate of nononcological complications, fibular strut grafting could be recommended as a method of reconstructing the bone defect left by curettage of a GCT of the proximal femur. Cite this article: Bone Joint J 2022;104-B(2):297–301.
Calculation of Stokes vector of laser backscattering from typical geometric rough surfaces at a long distance
Authors: Shen Shiyang , Zhang Xinyuan , Liu Yifan , Fang Jiajie , Xu Shilong , Hu Yihua 
Published: January 2022

The polarization bidirectional reflectance distribution function is key to establishing the relationships between incident and backscattering Stokes vectors. For analytical calculation of Stokes vectors of backscattering light from rough surfaces of objectives at long distances, we treat complicated objectives as a combination of several typical geometric surfaces. The analytical calculation forms of Mueller matrices of typical geometric rough surfaces at different sizes and geometric parameters are presented using a microfacet model, and thus, the backscattering Stokes vectors are determined. Experimental results of four types of geometric forms show good agreement with theoretical simulation, except when the incident angle is larger than about 60° at a wavelength of 532 nm. Further studies should be focused on improving the microfacet model for fitting the experimental results at large incident angles, and effects of multiple reflections between different geometric surfaces cannot be neglected when the combination of typical geometric surfaces is considered.
Variable ring-shaped lithography for the fabrication of meso- and microscale binary optical elements
Authors: Knoblich Maria , Kraus Matthias , Stumpf Daniela , Werner Lukas , Hillmer Hartmut , Brunner Robert 
Published: January 2022

This paper presents concept, optical design, and the implementation of a novel, to the best of our knowledge, lithographic exposure tool for the fabrication of rotationally symmetric meso- and microscale optical structures using a variable ring-shaped light distribution. Compared to the conventional lithographic technique of direct writing in Cartesian coordinates, which is intrinsically suboptimal for the fabrication of rotationally symmetric optical structures, this approach allows for fast exposure and avoids disturbing stitching effects. The diameter of the exposure ring varies between 1.6 and 6.5 mm, and the ring width measures

∼

75

µ

m

full width at half-maximum for all diameters. The basic capabilities of the exposure tool are demonstrated by the fabrication of exemplary meso- and microscale structures such as diffractive axicon elements, phase rings, Fresnel zone plates and zone plate arrays.
High anti-interference dual-parameter sensor using EIT-like effect photonic crystal cavity coupled system
Authors: Nie Tongyu , Han Zhe , Gou Zixing , Wang Chao , Tian Huiping 
Published: January 2022

We propose a sensor with high anti-interference ability using a
photonic crystal cavity coupled system for simultaneous sensing of the
refractive index (RI) and temperature (T) based on an
electromagnetically induced transparency-like effect. A transparent
window is achieved in the transmission spectrum through destructive
interference between the air mode resonance and dielectric mode
resonance in two one-dimensional photonic crystal structures. The
T-sensitive material (SU-8) is used in the coupled system, promoting
sensitivity and anti-interference ability. The ability of the system
to simultaneously detect a small range of RI and T is demonstrated
using three-dimensional finite-difference time-domain simulations and
the fitting process. The RI sensitivities for the air and dielectric
modes were 215 nm/refractive index unit (RIU) and 0 nm/RIU,
respectively. The T sensitivities for the air and dielectric modes
were 19 pm/K and

−

83

p
m

/

K

, respectively. The sensor resists
external interference, enabling it to resist the error caused by
readings. The footprint of the sensor is

29

×

1.8

µ

m

2

(

l
e
n
g
t
h

×

w
i
d
t
h

), contributing to future optical
on-chip integration sensor design.
Strong coupling between colloidal quantum dots and a microcavity with hybrid structure at room temperature
Authors: Zhen Zhen , Jin Si-Yue , Jie Ren , Liang Hai-Yao , Xu Xing-Sheng 
Published: January 2022

The interaction between light and matter has always been the focus of quantum science, and the realization of truly strong coupling between an exciton and the optical cavity is a basis of quantum information systems. As a special semiconductor material, colloidal quantum dots have fascinating optical properties. In this study, the photoluminescence spectra of colloidal quantum dots are measured at different collection angles in microcavities based on hybrid refractive-index waveguides. The photon bound states in the continuum are found in the low–high–low refractive-index hybrid waveguides in the appropriate waveguide width region, where the photoluminescence spectra of colloidal quantum dots split into two or more peaks. The upper polaritons and lower polaritons avoid resonance crossings in the systems. The Rabi splitting energy of 96.0 meV can be obtained. The observed phenomenon of vacuum Rabi splitting at room temperature is attributed to the strong coupling between quantum dots and the bound states in the continuum.
Screen use and internet addiction among parents of young children: A nationwide Canadian cross-sectional survey
Authors: Dennis Cindy-Lee , Carsley Sarah , Brennenstuhl Sarah , Brown Hilary K. , Marini Flavia , Bell Rhonda C. , Miller Ainsley , Ravindran Saranyah , D’Paiva Valerie , Dol Justine , Birken Catherine S. 
Published: January 2022

Objectives
To establish the factorial structure and internal consistency of the Internet Addiction Test (IAT) in parents, the level and correlates of problematic internet use, and patterns and types of screen use.

Study design
Data were collected through an online questionnaire about preconception health among Canadian women and men with ≥1 child. The questionnaire included the IAT and questions about time spent on screens by device type, use of screens during meals and in the bedroom, and perceptions of overuse. Factor analysis was completed to determine the factorial structure of the IAT, with multivariable linear regression used to determine correlates of the IAT.

Results
The sample included 1,156 respondents (mean age: 34.3 years; 83.1% female). The IAT had two factors: “impairment in time management” and “impairment in socio-emotional functioning” of which respondents had more impairment in time management than socio-emotional functioning. Based on the original IAT, 19.4% of respondents would be classified as having a mild internet use problem with 3.0% having a moderate or severe issue. In the multivariable model, perceived stress (b = .28, SE = .05, p < .001) and depressive symptoms (b = .24, SE = .10, p = .017) were associated with higher IAT scores. Handheld mobile devices were the most common type of screen used (mean = 3 hours/day) followed by watching television (mean = 2 hours/day).

Conclusion
Parents spent a significant portion of their time each day using screens, particularly handheld mobile devices. The disruption caused by mobile devices may hinder opportunities for positive parent-child interactions, demonstrating the need for resources to support parents ever-growing use of technologies.
Psychosocial, cultural, and academic challenges to Saudi Arabian students in Australia
Authors: Jameel Tahir , Baig Mukhtiar , Tariq Saba , Gazzaz Zohair Jamil , Butt Nadeem Shafique , Althagafi Nouf Khaleel , Hazazi Eman Yahya , Alsayed Razan Saleh 
Published: January 2022

Objectives
This study investigated the perceptions of Saudi Arabian medical disciplines students undergoing training in various institutes of Australia regarding psychosocial, cultural, and academic challenges.

Methods
This cross-sectional study was from March 15 to June 15, 2019. Data were collected by an online questionnaire. It consisted of questions regarding demographic, psychosocial, cultural, and academic challenges. Two hundred nineteen students studying in Australia responded to our questionnaire.

Results
Of the total 219 students, 13(6.0%) were undergraduate, 167(76%) were postgraduate, and 39(18%) were Ph.D. students. For most students (171[79.2%]), Australia was the country of choice for studying. Most of them were satisfied with their academic performance and adjustment to the Australian way of living. Most of the students (180[82.2%]) showed satisfaction over the availability of fair chances of their religious practices in Australia. Few of them faced difficulties coping with the Australian climate (25[11.4%]), homesickness (59[26.9%]), and food and dietary sources (44[20.1%]). Students were overall satisfied with the student advisory system (156[71.2%]), university assessments (147[67.2%]), and available research facilities (170[77.6%]). Among participants, 77 (35.1%), 119(54.3%), and 23(10.5%) students indicated that they wished to stay in Australia only until completion of their studies, temporarily and permanently, respectively.

Conclusions
Our findings showed that Saudi students in Australia had strong psychosocial well-being, cultural integration, and academic success. Most of them were satisfied and adjusted well to Australian culture.
Islands of Heritage: Conservation and Transformation in Yemen, Nathalie Peutz (2018)
Authors: Orkaby Asher 
Published: January 2022

Review of: Islands of Heritage: Conservation and Transformation in Yemen, Nathalie Peutz (2018)
Stanford, CA: Stanford University Press, 369 pp., 8 b&w illus.,
ISBN: 9781503607149 (cloth), $90
ISBN: 9781503607149 (paperback), $30
ESCREVIVÊNCIAS DAS JUVENTUDES NEGRAS E LGBTQI+
Authors: Martins Francisco André , Sousa Cirlene , Souza Liliane 
Published: January 2022

Este artigo apresenta debates e reflexões sobre o ser e o fazer docente vivenciados por um grupo de professores e professoras na execução do projeto de extensão universitária denominado “Escritas Juvenis”. As cartas foram utilizadas na formação de professores mineiros e professoras mineiras através de oficinas que tinham como objetivos sensibilizar e formar docentes conscientes dos problemas, conflitos e obstáculos enfrentados na realidade escolar pelas juventudes brasileiras. Duas vinculações teóricas se destacam: o conceito de Escrevivências da escritora e literata brasileira Conceição Evaristo e o conceito de Educação Decolonial do escritor e educador brasileiro Paulo Freire e do filósofo argentino Enrique Dussel, entre outros. Nas considerações finais, destaca-se a urgência de se compreender a pluralidade das experiências e diversidades discentes e docentes presentes na educação básica. E, fundamentalmente, desenvolver ações extensionistas que sejam capazes de educar a comunidade escolar para a complexidade da tríade escola, formação docente e processos de desumanização e invisiblização de estudantes negros, negras e LGBTQI+.
Studi Perubahan Garis Pantai di Perairan Muara Sungai Kaliboyo, Batang
Authors: Zadia Novi Henis , Hariyadi Hariyadi , Atmodjo Warsito , Yusuf Muh , Rifai Azis 
Published: January 2022

Perairan Muara Sungai Kaliboyo kawasan yang dinamis dan cepat mengalami perubahan garis pantai dan terbentuk spit di mulut sungai. Sedimen di daerah tersebut sering menutup muara sungai, sehingga mengganggu alur layar nelayan. Tujuan dari penelitian ini adalah untuk mengetahui indikasi perubahan garis pantai serta hubungan antara perubahan garis pantai dengan arus sejajar pantai di lokasi penelitian. Metode penelitian menggunakan metode deskriptif, untuk pengambilan sampel menggunakan metode purposive sampling, metode SMB untuk peramalan gelombang dan perhitungan menggunakan rumus empiris untuk validasi pasang surut, arus sejajar pantai dan parameter akresi-erosi. Hasil penelitian menunjukkan Perairan Muara Sungai Kaliboyo mengalami akresi, hal ini dapat diketahui dari nilai parameter akresi-erosi di tiga penampang. Penampang 1 dengan nilai Go sebesar 0,62, penampang 2 dengan nilai Go sebesar 0,39 dan penampang 3 dengan nilai Go sebesar 0,56. Nilai Go di atas 0,111 menunjukkan adanya akresi. Gelombang datang dari arah Timur Laut menuju Barat Daya menimbulkan gelombang pecah dengan tinggi 0,28 meter pada kedalaman 0,90 meter sehingga membentuk sudut gelombang pecah (αb) sebesar 9,51°. Gelombang pecah tersebut menimbulkan arus sejajar pantai dari Timur ke Barat dengan kecepatan 0,42 m/dt yang mengangkut sedimen sejajar pantai, sehingga membentuk spit di muara sungai dari arah Timur memanjang ke Barat. Kaliboyo River Estuary is a dynamic and rapidly changing area of the coastline and spits are formed at the river mouth. Sediment in this area often closes river mouths, disrupting the flow of fishermen's screens and clogging up river flow which sometimes causes floods around the river mouth. The purpose of this study is to find out indications of shoreline changes and the relationship between shoreline changes with longshore currents at the study site. The research method uses descriptive method, for sampling using purposive sampling method, SMB method for wave forecasting and calculations using empirical formulas. The research method uses descriptive method, for sampling using purposive sampling method, SMB method for wave forecasting and calculations using empirical formulas for tide validation, longshore currents and erosion-accretion parameters. The results showed that Kaliboyo River Estuary had accretion, this can be seen from the value of the erosion-accretion parameter in three cross sections. The first cross section with a Go value of 0,62, second cross section with a Go value of 0,39 and third cross section with a Go value of 0,56. Go values above 0,111 indicate accretion. Waves coming from the Northeast to the Southwest cause a breaking wave with a height of 0,28 meters at 0,90 meters depth to form an angle of breaking wave (αb) of 9.51°. The breaking wave caused a longshore current from East to West with a speed of 0,42 m /sec which transported sediment along the coast, thus forming a spit at the river mouth from the east extending to the west.
Transpor Sedimen di Perairan Muara Sungai Bodri, Kecamatan Patebon, Kabupaten Kendal
Authors: Andayani Dayinta , Suryoputro Agus Anugroho Dwi , Atmodjo Warsito , Satriadi Alfi , Subardjo Petrus 
Published: January 2022

Pantai akan terus berubah bentuknya menyesuaikan kondisi keseimbangan dinamiknya, proses tersebut dapat mengakibatkan akresi ataupun abrasi. Bentuk morfologi pantai yang terus berubah juga terjadi di perairan muara sungai Bodri. Hal ini tidak lepas dari pengaruh gelombang, arus sejajar pantai dan pergerakan sedimen. Perubahan tersebut akan berpengaruh terhadap aktivitas penduduk terutama nelayan yang kesulitan keluar masuk muara sungai Bodri. Tujuan penelitian ini adalah untuk mengetahui transpor sedimen yang disebabkan oleh arus sejajar pantai di perairan muara sungai Bodri selama 10 tahun (2009-2019) pada saat musim Timur. Penelitian ini menggunakan data morfologi, pasang surut, angin, gelombang, arus sejajar pantai, sampel sedimen gosong, dan material padatan tersuspensi. Metode penelitian yang digunakan adalah metode pendekatan studi kasus dan untuk pentuan titik sampling menggunakan metode purposive sampling serta dianalisis secara kuantitatif. Hasil penelitian dibagi menjadi 3 daerah yaitu daerah Timur muara, depan muara dan Barat muara. Besar arus sejajar pantai di daerah Timur muara yaitu 1,020 m/s, pada daerah depan muara terjadi arus sejajar pantai sebesar 1,243 m/s dan pada daerah Barat muara terjadi arus sejajar pantai sebesar 0,856 m/s. Transpor sedimen terjadi pada bagian Timur muara dengan arah dari Tenggara ke arah Utara sebesar 979.954,903 m3/tahun, kemudian di depan muara sungai arah berbelok ke Barat sebesar 1.131.864,393 m3/tahun, selanjutnya di Barat muara sungai berbelok dari arah Utara ke arah Barat Daya sebesar 432.014,433 m3/tahun. Hasil data konsentrasi sedimen tersuspensi menunjukkan bahwa daerah Timur memiliki nilai konsentrasi paling besar kemudian daerah Barat memiliki nilai konsentrasi terendah. Penelitian ini diharapkan dapat bermanfaat dalam perencanaan pencegahan abrasi dan akresi di perairan muara sungai Bodri.