bluuebunny/crossref_metadata_2025 huggingface dataset:
THE FIRST 200 CERAMIC-ON-CERAMIC HIP RESURFACING IMPLANTS AT MINIMUM TWO-YEAR FOLLOW-UP
Authors: Walter W. , Lin D. , Weinrauch P. , de Smet K. , Beaule P. , Young D. , Xu J. , Manktelow A.
Published: August 2024

Hip resurfacing arthroplasty (HRA) is a bone conserving alternative to total hip arthroplasty. We present the early 2-year clinical and radiographic follow-up of a novel ceramic-on-ceramic (CoC) HRA in an international multi-centric cohort.

Patients undergoing HRA between September 2018 and January 2021 were prospectively included. Patient-reported outcome measures (PROMS) in the form of the Forgotten Joint Score (FJS), HOOS Jr, WOMAC, Oxford Hip Score (OHS) and UCLA Activity Score were collected preoperatively and at 1- and 2-years post-operation. Serial radiographs were assessed for migration, component alignment, evidence of osteolysis/loosening and heterotopic ossification formation.

200 patients were identified to have reached 2-year follow-up. Of these, 185 completed PROMS follow-up at 2 years. There was significant improvement in HOOS (p< 0.001) and OHS (p< 0.001) and FJS (p< 0.001) between the pre-operative and 2-year outcomes. Patients reported improved pain (p<0.001), function (p<0.001) and reduced stiffness (p<0.001) as measured by the WOMAC score. Patients had improved activity scores on the UCLA Active Score (P<0.001) with 53% reporting return to impact activity at 2 years. There was no osteolysis and the mean acetabular cup inclination angle was 41deg and the femoral component shaft angle was 137deg. No fractures were reported over but there was one sciatic nerve palsy with partial recovery. Two patients were revised; one at 3 months for pain due to a misdiagnosed back problem and another at 33 months for loosening of the acetabular component with delamination of the titanium ingrowth surface.

CoC resurfacing at 2-years post-operation demonstrate promising results with satisfactory PROMS.
DOES REVISION ACCURATELY CORRECT LEG LENGTH DISCREPANCY AFTER TOTAL HIP ARTHROPLASTY? FUNCTIONAL OUTCOMES AND COMPLICATION RATES IN 57 PATIENTS
Authors: Hormi-Menard M. , Wegrzyn J. , Girard J. , Faure P-A. , Duhamel A. , Erivan R. , Migaud H.
Published: August 2024

The results of total hip arthroplasty (THA) revisions to correct leg length discrepancy (LLD) are not clear, with only two former limited series (< 25 patients). Therefore, we conducted a retrospective study of THA revisions for LLD to determine: 1) the change in LLD, 2) the function outcomes and whether obtaining equal leg lengths influenced function, 3) the complication and survival rates.

This multicenter study included 57 patients: 42 THA revisions for limb shortening and 15 revisions for limb lengthening. LLD was measured on conventional radiographs and EOS. The Oxford-12 and FJS outcome scores were collected and the number of patients achieving the Oxford-12 MCID.

The revisions were carried out a mean of 2.8 years after the index THA. The median LLD decreased from 7.5 mm (IQR: [5;12]) to 1 mm (IQR: [0.5;2.5]) at follow-up (p=0.0002). Overall, 55 of 57 patients (96%) had < 5 mm LLD at follow-up and 12 patients (21%) had equal leg lengths. The complication rate was 25%: 12 mechanical complications (8 periprosthetic femoral fractures, 2 stem loosening and 1 cup loosening, 1 dislocation) and 1 periprosthetic infection. The patient satisfaction was high with a median FJS of 79.2/100 and 77% of patients reached the Oxford-12 MCID. Lengthening procedures had significantly worst function than shortening (38% vs 91% of patients achieving the Oxford-12 MCID (p=0.0004)). Survivorship was 85% (95% CI: 77.9 – 92.5) at 2 years and 77% (95% CI: 66.3 – 87.1) at 4.6 years when using re-revision for any reason as the endpoint.

When LLD after THA does not respond to conservative management, revision THA should be considered. Although revision THA for LLD improved medium-term functional outcomes with a high patient satisfaction rate, especially for shortening procedures, the complication rate was high, particularly related to periprosthetic femoral fracture.
IMPLANT MOVEMENT ANALYSIS: A CT-BASED TECHNIQUE TO DIAGNOSE EARLY LOOSENING IN TOTAL HIP ARTHROPLASTY
Authors: Malchau H.
Published: August 2024

The painful hip without obvious clinical or radiographic signs of complications is a well-known scenario for surgeons. The clinical tools we have access to currently lack a dynamic test for detecting early signs of motion between implant and bone.

A new software, Sectra IMA, has a potential to facilitate diagnosis of early implant loosening by analysis of paired CT exams. In clinical practise the two scans are acquired by endpoint of a possible motion, “a provocation CT”, for example maximal external and internal rotation in a CT hip examination. 20 years of research by Olivecrona and Weidenhielm is the scientific background for the technique. Early results are presented by Sandberg et al 2022.

To further validate and create clinical evidence more extensive clinical studies is needed. A proposal for a multicentric, global clinical study will be presented for further discussion.

A new technique for diagnosis of acetabular cup loosening using computed tomography: preliminary experience in 10 patients. Henrik Olivecrona, Lotta Olivecrona, Lars Weidenhielm, Marilyn E Noz, Jocelyn Kardos, Gerald Q Maguire Jr, Michael P Zeleznik, Peter Aspelin. Acta Orthop. 2008 Jun;79(3):346-53. doi: 10.1080/17453670710015247.

Inducible displacement CT increases the diagnostic accuracy of aseptic loosening in primary total hip arthroplasty. Sandberg O, Carlsson S, Harbom E, Cappelen V, Tholén S, Olivecrona H, Wretenberg P. Acta Orthop. 2022 Oct 31;93:831-836. doi: 10.2340/17453674.2022.5240.PMID: 36314542
DOES THE ADDITION OF CT IMPROVE THE ACCURACY OF DETERMINATION OF IMPLANT FIXATION STATUS FOR PERIPROSTHETIC FRACTURES OF THE PROXIMAL FEMUR?
Authors: Courington R. , Ferreira R. , Shaath M. K. , Green C. , Langford J. , Haidukewych G.
Published: August 2024

When treating periprosthetic femur fractures (PPFFs) around total hip arthroplasty (THA)], determining implant fixation status preoperatively is important, since this guides treatment regarding ORIF versus revision. The purpose of this study was to determine the accuracy of preoperative implant fixation status determination utilizing plain films and CT scans.

Twenty-four patients who underwent surgery for Vancouver B type PPFF were included in the study. Two joint surgeons and two traumatologists reviewed plain films alone and made a judgment on fixation status. They then reviewed CT scans and fixation status was reassessed. Concordance and discordance were recorded. Interobserver reliability was assessed using Kendall's W and intraobserver reliability was assessed using Cohen's Kappa. Ultimately, the “correct” response was determined by intraoperative findings, as we routinely test the component intraoperatively.

Fifteen implants were found to be well-fixed (63%) and 9 were loose. Plain radiographs alone predicted correct fixation status in 53% of cases. When adding the CT data, the correct prediction only improved to 55%. Interestingly, concordance between plain radiographs and CT was noted in 82%. In concordant cases, the fixation status was found to be correct in 55% of cases. Of the 18% of cases with discordance, plain films were correct in 43% of cases, and the CT was correct in 57%. Interobserver reliability demonstrated poor agreement on plain films and moderate agreement on CT. Intraobserver reliability demonstrated moderate agreement on both plain films and CT.

The ability to determine fixation status for proximal PPFFs around uncemented femoral components remains challenging. The addition of routine CT scanning did not significantly improve accuracy. We recommend careful intraoperative testing of femoral component fixation with surgical dislocation if necessary, and the surgeon should be prepared to revise or fix the fracture based on those findings.
FEMORAL NECK FRACTURE IN PATIENTS OLDER THAN 65 YEARS: COMPARISON OF RESULTS OF CANNULATED SCREW FIXATION VERSUS HEMIARTHROPLASTY
Authors: Cordero-Ampuero J.
Published: August 2024

Debate continues about the best treatment for patients over 65 years with non-displaced subcapital hip fractures: internal fixation (IF) or hemiarthroplasty (HA). Surgical aggression, mortality, complications and recovery of walking ability after 1year have been compared between both treatments.

Match-paired comparison of 2 retrospective cohorts. 220 patients with IF vs 220 receiving a cemented bipolar HA. Matching by age (82.6±7.16 years (65–99)), sex (74.5% women), year of intervention (2013–2021) and ASA scale (24.2% ASA II, 55.8% III, 20.0% IV).

Age (p=0.172), sex (p=0.912), year of intervention (p=0.638) and ASA scale (p=0.726) showed no differences.

Surgical aggression smaller in IF: Surgical time (p< 0,00001), haemoglobin/haematocrit loss (p <0,00001), need for transfusion (p<0,00008), in-hospital stay (p<0,00001).

Mortality: higher in-hospital for hemiarthroplasties (12 deaths (5.5%) vs 1 (0.5%) (p=0.004) (RR=12, 1.5–91.5)). But no significant differences in 1-month (13 hemiarthroplasties, 6%, vs 9 osteosynthesis, 4.1%) and 1-year mortality (33 hemiarthroplasties, 15%, vs 35, 16%).

Medical complications: no differences in urinary/respiratory infections, heart failure, ictus, myocardial infarction, digestive bleeding, pressure sores or pulmonary embolus (p=0.055).

Surgical complications: no significant differences. HA: 6 intraoperative (2,7%) and 5 postoperative periprosthetic fractures (2,3%), 5 infections (2,3%), 10 dislocations (4,5%), 3 neurovascular injuries. IF: 10 acute fixation failures (4,5%), 2 infections (0,9%), 9 non-unions (4,1%), 16 ischemic necrosis (7,3%).

Functional results: no significant differences; 12 patients in each group (5,5%) never walked again (p=1), 110 HA (50%) and 100 IF (45.5%) suffered worsening of previous walking ability (p=0.575), 98 HA (44%) and 108 IF patients (49%) returned to pre-fracture walking ability (p=0.339).

Fixation with cannulated screws may be a better option for non-displaced femoral neck fractures because recovery of walking ability and complications are similar, while surgical aggression and in-hospital mortality are lower.
SURGICAL APPROACH IMPACTS PATIENT-REPORTED SYMPTOMS FOLLOWING ARTHROPLASTY FOR FEMORAL NECK FRACTURE
Authors: Schemitsch E. , Nowak L. , Shehata M. , Sprague S. , Bzovsky S. , Bhandari M.
Published: August 2024

We aimed to examine outcomes between displaced femoral neck fracture (FNF) patients managed with total hip arthroplasty (THA) or hemi-arthroplasty (HA) via the anterolateral vs. posterior approach.

We used data from the HEALTH trial (1,441 patients aged ≥50 with displaced FNFs randomized to THA vs. HA). We calculated each patient's propensity to undergo arthroplasty via the posterior approach, and matched them to 1 control (anterolateral approach) based on age (±5 years), and propensity score. We used Chi-Square/Fisher-Exact tests to compare dichotomous outcomes, and repeated measures ANOVA to examine differences in patient-reported outcomes (via the WOMAC subscores) from baseline to one-year postoperative. We used logistic regression to identify independent predictors of reoperation for instability in the posterior group.

We identified 1,306 patients for this sub-analysis, 876 (67.1%) who received arthroplasty via an anterolateral approach, and 430 (32.9%) a posterior approach. The unadjusted rate of reoperation was significantly higher in the posterior group (10.7% vs. 7.1%).

Following propensity score matching, we retained 790 patients (395 per group), with no between-group differences in patient, fracture, or implant characteristics. The matched cohort had a higher rate of comorbidities, and were less likely to be employed vs. the unmatched cohort. The rate of treatment for dislocation remained higher in the posterior group (6.1% vs. 2.0%) following matching.

Repeated measures ANOVA revealed significantly better WOMAC pain, stiffness, function, and total scores in the posterior group. Between-group differences at 12-months were: pain - 0.59 (0.03–1.15); stiffness - 0.62 (0.35–0.87); function - 2.99 (0.12–5.86); total - 3.90 (0.24–7.56). We identified THA (vs. HA, odds ratio 2.05 [1.05–4.01]) as the only independent predictor of treatment for dislocation in the posterior group.

Our analyses revealed that compromised patients with displaced FNFs who undergo arthroplasty via the posterior approach may report better symptoms at one-year vs. the anterolateral approach, despite a higher odds of reoperation for instability.
SAFETY AND EFFICACY OF OUTPATIENT TOTAL HIP ARTHROPLASTY IN OBESE PATIENTS
Authors: Gauthier P. , Garceau S. , Parisien A. , Beaulé P. E.
Published: August 2024

The purpose of our study is to examine the outcome of patients undergoing outpatient total hip arthroplasty with a BMI >35.

Case-control matching on age, gender (46% female;54%male), and ASA (mean 2.8) with 51 outpatients BMI≥35 kg/m2 (mean of 40 (35–55)), mean age of 61 (38–78) matched to 51 outpatients BMI<35 kg/m2 (mean of 27 (17–34)) mean age 61 (33–78). Subsequently 47 inpatients BMI≥35 kg/m2 (mean of 40 (35–55)) mean age 62 (34–77) were matched outpatients BMI≥35 kg/m2. For each cohort, adverse events, readmission in 90 days, reoperations were recorded.

Rate of adverse events was significantly higher in BMI ≥35: 15.69% verus 1.96% (p=0.039) with 5 reoperations in the BMI≥35 cohort vs 0 in the BMI<35 kg/m2 (p= 0.063). Readmissions did not differ between groups (p=0.125). No significant difference for all studied outcomes between the outpatient and inpatients cohorts with BMI≥35 kg/m2. The most complications requiring surgery/medical intervention (3B) were in the inpatient cohort of patients >35. The prevalence of Diabetes and Obstructive Sleep apnea was 21.6% and 29.4% for BMI>35 compared to 9.8% and 11.8%, for BMI <35, respectively.

Severely obese patients have an overall higher rate of adverse events and reoperations however it should not be used a sole variable for deciding if the patient should be admitted or not.
Addressing sagittal plane imbalance in primary total knee arthroplasty
Authors: van de Graaf Victor A. , Shen Tony S. , Wood Jil A. , Chen Darren B. , MacDessi Samuel J.
Published: August 2024

Aims

Sagittal plane imbalance (SPI), or asymmetry between extension and flexion gaps, is an important issue in total knee arthroplasty (TKA). The purpose of this study was to compare SPI between kinematic alignment (KA), mechanical alignment (MA), and functional alignment (FA) strategies.

Methods

In 137 robotic-assisted TKAs, extension and flexion stressed gap laxities and bone resections were measured. The primary outcome was the proportion and magnitude of medial and lateral SPI (gap differential > 2.0 mm) for KA, MA, and FA. Secondary outcomes were the proportion of knees with severe (> 4.0 mm) SPI, and resection thicknesses for each technique, with KA as reference.

Results

FA showed significantly lower rates of medial and lateral SPI (2.9% and 2.2%) compared to KA (45.3%; p < 0.001, and 25.5%; p < 0.001) and compared to MA (52.6%; p < 0.001 and 29.9%; p < 0.001). There was no difference in medial and lateral SPI between KA and MA (p = 0.228 and p = 0.417, respectively). FA showed significantly lower rates of severe medial and lateral SPI (0 and 0%) compared to KA (8.0%; p < 0.001 and 7.3%; p = 0.001) and compared to MA (10.2%; p < 0.001 and 4.4%; p = 0.013). There was no difference in severe medial and lateral SPI between KA and MA (p = 0.527 and p = 0.307, respectively). MA resulted in thinner resections than KA in medial extension (mean difference (MD) 1.4 mm, SD 1.9; p < 0.001), medial flexion (MD 1.5 mm, SD 1.8; p < 0.001), and lateral extension (MD 1.1 mm, SD 1.9; p < 0.001). FA resulted in thinner resections than KA in medial extension (MD 1.6 mm, SD 1.4; p < 0.001) and lateral extension (MD 2.0 mm, SD 1.6; p < 0.001), but in thicker medial flexion resections (MD 0.8 mm, SD 1.4; p < 0.001).

Conclusion

Mechanical and kinematic alignment (measured resection techniques) result in high rates of SPI. Pre-resection angular and translational adjustments with functional alignment, with typically smaller distal than posterior femoral resection, address this issue.

Cite this article: Bone Jt Open 2024;5(8):681–687.
Impact of climate change on maternal health outcomes: An evidence gap map review
Authors: Meherali Salima , Nisa Saba , Aynalem Yared Asmare , Kennedy Megan , Salami Bukola , Adjorlolo Samuel , Ali Parveen , Silva Kênia Lara , Aziato Lydia , Richter Solina , Lassi Zohra S.
Published: August 2024

Climate change poses unique challenges to maternal well-being and increases complications during pregnancy and childbirth globally. This evidence gap map (EGM) aims to identify gaps in existing knowledge and areas where further research related to climate change and its impact on maternal health is required. The following databases were searched individually from inception to present: Medline, EMBASE, and Global Health via OVID; Cumulative Index to Nursing and Allied Health Literature (CINAHL) via EBSCOhost; Scopus; and organizational websites. In this EGM, we integrated 133 studies published in English, including qualitative, quantitative, reviews and grey literature that examined the impact of climate change on maternal health (women aged 15–45). We used Covidence to screen studies and Evidence for Policy and Practice Information (Eppi reviewer)/Eppi Mapper software to generate the EGM. Data extraction and qualitative appraisal of the studies was done using critical appraisal tools. The study protocol was registered in International Platform of Registered Systematic Review and Meta-analysis Protocols (INPLASY) # INPLASY202370085. Out of 133 included studies, forty seven studies were of high quality, seventy nine moderate equality and seven low quality. This EGM found notable gaps in the literature regarding the distribution of research across regions. We found significant research in North America (51) and Asia (40 studies). However, Africa and the Caribbean had fewer studies, highlighting potential disparities in research attention and resources. Moreover, while the impact of extreme heat emerged as a prominent factor impacting maternal well-being, there is a need for further investigation into other climate-related factors such as drought. Additionally, while preterm stillbirth and maternal mortality have gained attention, there is an overlook of malnutrition and food insecurity indicators that require attention in future research. The EGM identifies existing research gaps in climate change and maternal health. It emphasizes the need for global collaboration and targeted interventions to address disparities and inform climate-responsive policies.
The long-term effects of perceived instructional leadership on teachers’ psychological well-being during COVID-19
Authors: Chen Xiu-Mei , Liao Xiao Ling , Chen I-Hua , Gamble Jeffrey H. , Jiang Xing-Yong , Li Xu-Dong , Bo Cun-Xu
Published: August 2024

The COVID-19 outbreak led to widespread school closures and the shift to remote teaching, potentially resulting in lasting negative impacts on teachers’ psychological well-being due to increased workloads and a perceived lack of administrative support. Despite the significance of these challenges, few studies have delved into the long-term effects of perceived instructional leadership on teachers’ psychological health. To bridge this research gap, we utilized longitudinal data from 927 primary and secondary school teachers surveyed in two phases: Time 1 in mid-November 2021 and Time 2 in early January 2022. Using hierarchical linear modeling (HLM), our findings revealed that perceptions of instructional leadership, especially the "perceived school neglect of teaching autonomy" at Time 1 were positively correlated with burnout levels at Time 2. Additionally, burnout at Time 2 was positively associated with psychological distress and acted as a mediator between the "perceived school neglect of teaching autonomy" and psychological distress. In light of these findings, we recommend that schools prioritize teachers’ teaching autonomy and take proactive measures to mitigate burnout and psychological distress, aiming for the sustainable well-being of both teachers and students in the post-pandemic era.
Vertical implantable collamer lens as a novel method to increase rotational stability
Authors: Lee Yongwoo , Han Sang Beom , Auffarth Gerd U. , Son Hyeck-Soo , Khoramnia Ramin , Choi Chul Young , Moon Kun , An Sang Il , Lee Je Myung , Lee Jong Ho
Published: August 2024

Purpose

We investigated the vertical implantation of a toric implantable collamer lens (ICL) and compared the rotational stability with that of horizontal implantation.

Methods

This matched comparative study retrospectively reviewed and analyzed data from patients who underwent ICL implantation from 2003–2022 by 1:1 matching vertical and horizontal (V and H toric groups, respectively) implantation patients according to preoperative astigmatism, spherical equivalent, sulcus-to-sulcus, anterior chamber depth, and ICL size. Visual acuity, manifest refraction, vaulting, and rotation were measured 3 months postoperatively.

Results

We included 646 eyes (323 each in the V and H toric groups). No statistically significant difference was observed between groups in postoperative visual acuity, refractive error, and astigmatism. Vaulting was lower in the V toric group. (P < 0.001). The mean lens rotation in the V toric group was less than that in the H toric group (1.11 ± 2.84° versus 3.02 ± 10.34°, P = 0.001). The proportion of eyes in the V and H toric groups showing ≥10° of rotation was 2.5% (8 eyes) and 6.5% (21 eyes), respectively (P = 0.014). Despite repositioning from rotation, three (0.9%) and eight (2.5%) eyes required removal owing to lens re-rotation in the V and H toric groups, respectively.

Conclusion

Toric ICL vertical implantation showed good rotational stability, and appropriate visual acuity correction results with relatively low vaulting. This procedure therefore presents an effective novel method that could replace horizontal toric ICL implantation.
Determination of Rhodamine 6G with direct immersion single-drop microextraction combined with an optical probe
Authors: Skok Arina , Vishnikin Andriy , Bazel Yaroslav , Toth Ján
Published: August 2024

The combination of an optical probe and single-drop direct immersion microextraction (DI-SDME-OP) was used for the preconcentration and subsequent spectrophotometric determination of rhodamine 6G (Rh6G). The developed method is based on the formation of an ionic associate between Rh6G and picric acid at pH 3.0 and its extraction with amyl acetate. A microdrop of the organic phase was stably placed in the hole of an optical probe immersed in the sample solution. The absorbance of the extraction phase was monitored at 534 nm. The proposed method combines in a single step several stages of the analytical procedure, such as pre-concentration, phase separation, transfer of the extraction phase to the instrument and online measurement. The sensitivity of the proposed approach is not inferior to existing microextraction methods involving the combination of liquid-phase or solid-phase extraction with spectrophotometry or HPLC with a UV-Vis detector. The evaluation of the greenness of the developed method carried out by the AGREE method (0.58 points) showed that it outperforms other similar existing techniques using this parameter. The calibration plot for the determination of Rh6G by the DI-SDME-OP method was linear over the range of 10–500 nM with a correlation coefficient of 0.9956. The limit of detection was 3.4 nM. The accuracy and applicability of the method were evaluated by the determination of Rh6G in natural waters and lipstick.
A review of residential water conservation policies and attempts to measure their effectiveness
Authors: Maas Alexander , Puri Roshan , Goemans Christopher
Published: August 2024

With escalating global water scarcity and increasing pressures on freshwater resources, demand-side management has emerged as a crucial tool for sustainable water resource management. This paper reviews residential, demand-side water management strategies, focusing primarily on price mechanisms. We trace the evolution of price structures and attempts to estimate consumer responses under these structures, highlighting the methodological and practical difficulties with estimating elasticity under non-linear billing structures. We also include a tertiary review of previous research into non-pecuniary strategies, such as restrictions, and information/education campaigns. This review serves as a primer for policymakers, water managers, and researchers seeking to design and evaluate demand-side management in residential water use.
Innovation Tourism Information System to Support Post-Covid-19 Health Protocols and Halal Tour in The Special Area of Yogyakarta
Authors: Tejakusuma Trio Yonathan , Wirabhuana Arya , Berakon Izra
Published: August 2024

Yogyakarta is one of the regions in Indonesia whose tourism sector has been affected by the Covid-19 pandemic. All tourism actors, especially onAlmost none of the MSME and informal sectors can escape the economic downturn due to the Covid-19 pandemic. They lost their income because tourist visits dropped by almost 100 percent. This is very worrying because it is known that Yogyakarta is one of the cities which is a tourist destination in Indonesia. The reopening of tourism objects after Covid-19 has become a momentum and turning point in promoting and developing the potential for halal tourism in DIY. The establishment of DIY as one of the National Priority Halal Destinations by the Ministry of Tourism in 2018 prompted the DIY government to encourage tourism actors such as restaurants and hotels to take part in halal certification from the Indonesian Ulema Council to ensure and increase consumer confidence in the halal tourism services provided.In general, the problems that are the object of discussion and are resolved within the scope of this research include identifying indicators that must be considered in developing tourism in DIY so that it complies with the Covid-19 Health protocol and the concept of Halal Tourism. In addition, it will also determine the characteristics of the Tourism Information System needed by Stakeholders in order to be able to support the implementation of the Covid-19 Health Protocol in the "New Normal" era and the implementation of Halal Tourism as a promising option. And finally in this research will also provide a proposal for a prototype / Information System Innovation that can be used and replicated by stakeholders in the Tourism sector, especially in DI
 
Keyword : ProtocolHealth, Covid-19 Pandemic, Halal Tourism, Tourism Information System
Sentiment Analysis of PeduliLindungi User Using Naïve Bayes Classifier Algorithm and Support Vector Machine
Authors: Rahmatullah Rizki , Elquthb Jundi Nourfateha , Al-Qurani Fanya Nindha , Khasanah Annisa Uswatun
Published: August 2024

The Indonesian government is attempting to track the spread of the virus by creating an application named “PeduliLindungi” to deal with the coronavirus's exponential increase in cases across the country. Because it has a feature to disclose the user's location immediately, it is envisaged that this program can reduce the transmission of viruses in monitoring. Indonesians have used the PeduliLindungi, and there are user reviews of both positive and negative experiences. Therefore, to enhance these services, an assessment is required. The text mining method can extract information from users' reviews to collect this data. This method's application additionally uses the Naive Bayes Classifier and Support Vector Machine algorithms, which analyze word associations and do a classification evaluation of the data's accuracy. Based on the two methods' calculations, the NBC algorithm's average classification accuracy was 83.81%, and the SVM algorithm was 93.84%. Following that, discoveries on words that frequently exist or are used by people are obtained through word associations in the sentiment analysis of positive or negative reviews.
»Vrummmummmmm FVISH!«
Authors: Mauch Addrich
Published: August 2024

Soundscapes are a key aspect in video games. Addrich Mauch presents a new set of methods for ethnomusicological field research and game sound analysis in game spaces. He aims to explore how gameworlds are created, manipulated, and experienced through sound and music. Fictional worlds in video games can be seen as worlds within worlds, mirroring what is outside and therefore be called heterotopias – real sites that are in relation to all other cultural, social, and physical sites of our society. Interaction is an essential aspect in describing those gameworlds; visual and auditory channels work together in supporting the gameplay as the primary feature of communication in video games. Mauch’s proposed theory provides deeper insights of the coded constant conversation between player and computer, demonstrated on the fieldwork studies and analysis of »Horizon Zero Dawn« (Guerilla Games 2017), »Star Wars Jedi: Fallen Order« (Respawn Entertainment 2019) and »Assassin’s Creed Valhalla« (Ubisoft 2020).
Idempotent vector spaces and their linear transformations
Authors: Johnston William , Wahl Rebecca G.
Published: August 2024

This article extends topics about linear algebra and operator theoretic linear transformations on complex vector spaces to those on bicomplex spaces. For example, Definition 3 for the first time defines algebraically idempotent vector spaces, which generalizes the standard definition of a vector space and which includes bicomplex vector spaces as a special case, along with its dimension and its basis in terms of a corresponding vectorial idempotent representation. The article also shows how an

n
×
n

n\times n

bicomplex matrix’s idempotent representation leads to a bicomplex Jordan form and a description of its bicomplex invariant subspace lattice diagram. Similarly, in a new way, the article rigorously defines “bicomplex Banach and Hilbert” spaces, and then it expands, for the first time, the theory of compact operators on complex Banach spaces to those on bicomplex Banach spaces. In these ways, the article indicates that the idempotent representation extends complex linear algebra and operator theory in a surprisingly generalized and straightforward way to vector space results with bicomplex and multicomplex scalars.
Choose life, not vapes: empowering teens to make healthier choices – a cross sectional study
Authors: Nangia Tanu , Gupta Bhuvandeep , Singhania Rashika , Sharma Dipanshi , Srivastava Madhulika , Langpoklakpam Carrolene
Published: August 2024

Objectives

The tobacco epidemic is more than just a health concern. It is a socioeconomic one with far-reaching effects. Smoking being the most common mode of tobacco use worldwide, has an impact on human life and well-being. Hence, this study aimed to seek the knowledge and awareness of adolescents about e-cigarettes and spread awareness about the harmful effects of vapig so as to reduce the ongoing rise in cigarette consumption among these individuals.

Methods

A questionnaire-based cross-sectional survey was conducted among 100 teenage children of urban schools in Delhi NCR of age group 14–17 years which collected information on teenage vaping practices, views about vaping, and their accessibility to vaping items. The data were analyzed using the Statistical Program for Social Sciences – SPSS version 25 through frequency and percent, graphs, Bar chart and Chi-squared test.

Results

A total 100 participants took part in the survey out of which of 59 were males and 41 were females. A significant proportion of the participants (94 %) possessed knowledge of e-cigarettes, and 14 % had actually used them at some point. Most of the participants were aware of the disposable variety of e-cigarettes and most of them thought that e-cigarettes were less addictive.

Conclusions

A significant portion of educated young adults who have never vaped are susceptible to using e-cigarettes in the future. It is also discovered that e-cigarettes are still available and being promoted in spite of the restrictions. In addition to good health education for minors, more stringent enforcement of current rules and monitoring could help prevent larger uptake in the future.
Effects of Cable Sheath on Deformation Coordination between the Sensing Fiber and Sand
Authors: Luo Qi , Zhang Dan , Yimit Hasanjan , Su Jingwen , Wang Haoyu , Liao Haiyang
Published: August 2024

Distributed fiber optic sensing has been used for monitoring land subsidence, and accurate measurement of soil deformation relies on the coordination between the optical fiber and soil, also known as the deformation coordination between the optical fiber and soil (DCf–s). To investigate this issue, three types of optical cables with different sheath structures were embedded in triaxial specimens made of standard sand. The fiber strain was measured by optical frequency domain reflectometry. The axial deformation of the specimen was measured by a linear variable displacement transducer sensor. Each specimen was subjected to 12 loading and unloading cycles under varying axial stresses, confining pressures, and dry or wet conditions during the triaxial tests. Results shows that the Φ3 mm loose-tube optical cable has poor DCf–s with the strain not exceeding 15 με. Under a confining pressure of 200 kPa, 400 kPa, and 500 kPa, the DCf–s coefficients between the Φ3 mm tight-buffered optical cable and wet sand during loading are 0.266, 0.366, and 0.496, respectively. The DCf–s coefficients of the Φ5 mm tight-buffered optical cable under identical conditions are 0.186, 0.226, and 0.249. Overall, the Φ3 mm tight-buffered optical cable exhibits superior DCf–s compared with both the Φ5 mm tight-buffered optical cable and Φ3 mm loose-tube optical cable, indicating that the sheath structure is a crucial factor in determining the DCf–s. In addition, the DCf–s is also influenced by several other factors, including the number of loading–unloading cycles and the confining pressure in the soil.
A conjugação teoria/prática na sala de aula comunicativa de ILE
Authors: Machado Miliante de Melo Tatiana
Published: August 2024

A tensão teoria/prática permeia os mais diversos setores de nossa sociedade. Observa-se que, no processo de formação dos professores, a teoria aparece muitas vezes dissociada da prática (cf. Telles e Osório, 1998), não dando margem à reflexão ou a questionamentos acerca da relação que existe entre essas duas realidades. Em meio a esse dilema, permanece a questão: seria possível, portanto, unir estes dois campos? Apresento neste trabalho a discussão teórica que serve de base para analisar minha atuação enquanto professora de Inglês como Língua Estrangeira (ILE) através de uma prática de pesquisaação (cf. Thiollent, 1996). Analiso como concilio as teorias de ensino/aprendizagem _ mais ou menos conscientes – que têm regido minha prática docente e quais reflexos de minhas escolhas teóricas e práticas no processo de construção do conhecimento em ILE de meus próprios alunos. Aponto a pesquisa-ação como ferramenta de melhoria do processo de formação de professores.
Not a Deficit, Just Different: Prepulse Inhibition Disruptions in Autism Depend on Startle Stimulus Intensities
Authors: Doornaert Ella Elizabeth , Mohamad Alaa El-Cheikh , Johal Gurwinder , Allman Brian Leonard , Möhrle Dorit , Schmid Susanne
Published: August 2024

Sensory processing disruptions are a core symptom of autism spectrum disorder (ASD) and other neurological disorders. The acoustic startle response and prepulse inhibition (PPI) are common metrics used to assess disruptions in sensory processing and sensorimotor gating in clinical studies and animal models. However, often there are inconsistent findings on ASD-related PPI deficits across different studies. Here, we used a novel method for assessing changes in startle and PPI in rodents, using theCntnap2knock-out (KO) rat model for neurodevelopmental disorder/ASD that has consistently shown PPI disruptions in past studies. We discovered that not only sex and prepulse intensity but also the intensity of the startle stimulus profoundly impacts whether PPI deficits are evident in theCntnap2KO rat or not. We show that rats do not universally exhibit a PPI deficit; instead, impaired PPI is contingent on specific testing conditions. Notably, at lower startle stimulus intensities,Cntnap2KO rats not only demonstrated intact PPI but also exhibited evidence of enhanced PPI compared with their wild-type counterparts. This finding emphasizes the importance of considering specific testing conditions when evaluating startle and PPI in the context of ASD and other neuropsychiatric conditions and might explain some of the inconsistencies between different studies.
Influence of copper on zinc oxide films and solar cell performance
Authors:   Department of physics, College of Education For Pure Science (Ibn Al-Haitham), University of Baghdad, Baghdad, Iraq, Al-Maiyaly B. K. H. , Ali S. M. ,   Department of physics, College of Education For Pure Science (Ibn Al-Haitham), University of Baghdad, Baghdad, Iraq, Hussein B. H. ,   Department of physics, College of Education For Pure Science (Ibn Al-Haitham), University of Baghdad, Baghdad, Iraq, Hassun H. K. ,   Department of physics, College of Education For Pure Science (Ibn Al-Haitham), University of Baghdad, Baghdad, Iraq
Published: August 2024

Copper doped Zinc oxide and (n-ZnO / p-Si and n-ZnO: Cu / p-Si) thin films thru thickness (400±20) nm were deposited by thermal evaporation technique onto two substrates. The influence of different Cu percentages (1%,3% and 5%) on ZnO thin film besides hetero junction (ZnO / Si) characteristics were investigated, with X-ray diffractions examination supports ZnO films were poly crystal then hexagonal structural per crystallite size increase from (22.34 to 28.09) nm with increasing Cu ratio. The optical properties display exceptional optically absorptive for 5% Cu dopant with reduced for optically gaps since 3.1 toward 2.7 eV. Hall Effect measurements presented with all films prepared pure and doped have n-types conductive, with a maximum carriers concentrate of 3.9×1016 (cm-3 ) besides lower resistivity of 59.6 (Ω.cm) for films doped with 5% (Cu). The current- voltage (I-V) characteristics of heterojunction below illumination by incident power density (100 mW/cm2 ) showed that heterojunction (n-ZnO: 5%Cu / p-Si) has maximum efficiency (η =3.074 %).
A first-principles investigation of Ba2CaTeO6 and Ba2CaWO6 compounds for thermoelectric and optoelectronic applications
Authors:   Spin-Optoelectronics and Ferro-Thermoelectric (SOFT) Materials and Devices Laboratory, Department of Physics, University of Agriculture, Faisalabad 38040, Pakistan, Ishfaq M. , Aziz A. ,   Spin-Optoelectronics and Ferro-Thermoelectric (SOFT) Materials and Devices Laboratory, Department of Physics, University of Agriculture, Faisalabad 38040, Pakistan, Aldaghfag S. A. ,   Department of Physics, College of Sciences, Princess Nourah bint Abdulrahman University, P. O. Box 84428, Riyadh 11671, Saudi Arabia, Noreen S. ,   Department of Chemistry, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan, Zahid M. ,   Department of Chemistry, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan, Yaseen M. ,   Spin-Optoelectronics and Ferro-Thermoelectric (SOFT) Materials and Devices Laboratory, Department of Physics, University of Agriculture, Faisalabad 38040, Pakistan
Published: August 2024

Herein, structural, optoelectronic, and thermoelectric characteristics of Ba2CaTeO6 and Ba2CaWO6 oxides double perovskite have been evaluated by first-principles calculations. Enthalpy of formation and tolerance factor are computed to ensure the respective structural and thermodynamical stability. Ba2CaTeO6 and Ba2CaWO6 have mBJ computed bandgaps of 5.87 eV and 4.20 eV, respectively. Furthermore, the optical parameters like dielectric constants (ԑ1(ω) & ԑ2(ω)) and other related parameters are computed. The thermoelectric (TE) parameters were examined using the BoltzTraP package. The ZT values of Ba2Ca(Te/W)O6 at 450 K are 0.76/0.79, respectively. The outcomes of the Ba2CaTeO6 and Ba2CaWO6 double perovskite show that these materials are potential contenders for UVbased optical and various TE gadgets.
Incorporation of B and La oxides into bioactive glass: in vitro studies for bone regeneration applications
Authors:   Department of Biomedical Engineering, Faculty of Engineering, Karabük University, Turkey, Badraddin R. , Koç E. ,   Department of Biomedical Engineering, Faculty of Engineering, Karabük University, Turkey, Saud A. N. ,   Department of Biomedical Engineering, Faculty of Engineering, Karabük University, Turkey
Published: August 2024

Bone tissue engineering seeks to regenerate damaged tissues using biocompatible scaffolds that mimic bone minerals. This study focuses on scaffolds based 45S5 bioactive glass (45% SiO2, 24.5% Na2O, 6% P2O5, 24.5% CaO) doped with boron and lanthanum oxides. These scaffolds, produced via conventional melting, form a hydroxyapatite layer, promoting strong bone integration. Result of DTA, XRD, FTIR, SEM, and EDS, showed doping led to crystalline phase identification, silicate network confirmation, and detection of calcium phosphorus deposits. Doping also increased pH, degradation kinetics, and antibacterial activity. These findings suggest that boron and lanthanum-doped 45S5 scaffolds have potential in bone regeneration applications.
Study of structural, mechanical, thermal, and electronic structure properties of A2SnCl6 (A = Cs, Rb) perovskites for energy generation applications
Authors:   Physics Department, College of Science, Umm Al-Qura University, P.O. Box 715, Makkah 24382, Saudi Arabia, Alsalmi O. , Rashid M. ,   Department of Physics, Jashore University of Science and Technology, Jashore 7408, Bangladesh
Published: August 2024

The structural, mechanical, thermal, and electronic structure properties of lead-free vacancy-ordered perovskites A2SnCl6 (A = Cs, Rb) were investigated by first-principles calculations under pressure in the DFT framework. DFT is used to study the effect of pressure (0–40 GPa) on these properties of A2SnCl6 (A = Cs, Rb) perovskites. The mechanical parameters show that these two perovskites in nature are mechanically stable, anisotropic, and ductile. It is shown that, as pressure increases, the electronic band gap of Cs2SnCl6 and Rb2SnCl6 increases from 3.495 eV to 4.958 eV and 3.446 eV to 4.722 eV, respectively. Electronic structure calculations show that Sn s orbitals and halogen Cl p orbitals mainly form the conduction band through combination, while the valence band consists only of halogen Cl p orbitals. The mechanical and electronic properties analysis proposes that these two perovskites are potential candidates for optoelectronic applications that work under changing pressure and altitude.
Retention and loss of plant terms between Proto Oceanic and Micronesian
Authors: Blumenfeld Lev
Published: August 2024

What plants did speakers of Proto-Micronesian know about, and what do they tell us about the settlement history of Micronesia? In this paper the Micronesian reflexes of Proto-Oceanic plant terms are surveyed. The data points to a settlement scenario that starts with high islands, and excludes an “island-hopping” scenario via closest low islands.
Comparison of Extremely Randomized Survival Trees and Random Survival Forests: A Simulation Study
Authors: Zaenal Mohamad Solehudin , Fitrianto Anwar , Wijayanto Hari
Published: August 2024

Abstract.
Purpose: This simulation study investigates the Extremely Randomized Survival Trees (EST) model, a machine learning technique expected to handle survival analysis, particularly in large survival datasets, effectively. The study compares the performance of the EST model with that of the Random Survival Forest (RSF) model, focusing on the C-index value to determine which model performs better.
Methods: The analysis begins with the generation of 540 simulated datasets, created by combining three levels of sample sizes, two levels of censoring proportions, three types of hazard functions, and 30 repetitions for each scenario. The simulation data were split into 80% training and 20% testing data. The training data were used to build the EST and RSF models, while the test data were used to evaluate their performance. The model with the highest C-index value was deemed the best performer, as a higher C-index indicates superior model performance.
Result: The results indicate that the sample size, type of hazard function, and the method used influence that model performance. The EST model significantly outperformed the RSF model when the sample size was large, though no significant difference was observed when the sample size was small or medium. Additionally, the EST model consistently demonstrated faster computation times across all simulation scenarios.
Novelty: This study provides a pioneering exploration into applying decision tree algorithms, specifically EST and RSF, in survival analysis. While these methods have been extensively studied in regression and classification contexts, their application in survival analysis remains relatively unexplored.
Kai kurie metodinio vadovavimo Lietuvos TSR bibliotekoms sistemos vystymo klausimai TSKP XXII suvažiavimo nutarimų šviesoje
Authors: Sinkevičius K.
Published: August 2024

Выполняя постановление ЦК КПСС «О состоянии и мерах улучшения библиотечного дела в стране» (сентябрь 1959 г.), за последние годы в области библиотечного строительства были достигнуты значительные результаты. Число читателей в одних только государственных массовых библиотеках выросло с 546400 в 1958 году до 1035500 в 1961 году. Одновременно углублялось содержание работы библиотек, воспитывались кадры и сплачивался актив, повышался авторитет библиотекаря как пропагандиста книги и знаний. Задача доведения книги до каждой семьи была выполнена в сельской местности в мае 1961 года в целом по республике.В деле развития работы библиотек республики большую роль сыграли методические центры. В результатах работы библиотек – доля труда методистов.Решения ХХII съезда КПСС и новая Программа партии поставили перед библиотеками новые грандиозные задачи. Библиотеки призваны добиваться того, чтобы книга прочно вошла в жизнь каждого советского человека и помогала ему работать, сознательно строить жизнь по-коммунистически.Новые задачи поставлены и перед системой методического руководства. Методические центры призваны добиваться того, чтобы не было ни одной отстающей или средней библиотеки, чтобы все библиотеки, независимо от их профиля и ведомственной подчиненности, ощущали непрерывное методическое воздействие, цель которого – поднять уровень пропаганды книги, повысить квалификации библиотекарей, распространить опыт передовиков и мобилизовать всех работать по их примеру.Для развития методической помощи библиотекам необходимо укреплять и усовершенствовать систему методического руководства в республике. По примеру организаuии методической работы в крупных городах других республик нужно создать методические центры – Центральные городские библиотеки в Вильнюсе и Каунасе. Необходимо также создать методичеcкий центр сети школьных библиотек республики в виде Центральной научно-педагогической библиотеки. В связи с ростом роли самостоятельной работы школьника над книгой и ответственности за руководство детским чтением, а также в связи с расширением сети школ-интернатов роль школьных библиотек непрерывно возрастает, эти библиотеки требуют более интенсивного и дифференцированного методического руководства.Перед методистами республики стоят задачи также развивать работу методических центров, координировать их действия, распределить между собой те сети ведомственных библиотек, которые не имеют своих центров методического руководства.От четкого распределения методических сил и согласованности их действий, от расширения и усовершенствования системы методического руководства в большой мере зависит успех поднятия работы всех библиотек республики на новый уровень, необходимый в период строительства коммунизма.