bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Leadership Style on the Performance of Educators and Educational Staff at the Faculty of FTIK, IAIN Bukittinggi
Authors: Sulaiman Sulaiman , Aniswita Aniswita , Gistituati Nurhizrah , Rusdinal Rusdinal
Published: March 2022

The purpose of this study was to examine the effect of leadership style on the performance of educators and education staff at the Faculty of Tarbiyah and Teacher Training (FTIK) IAIN Bukittinggi. The population in this study were all educators and education staff at the FTIK IAIN Bukittinggi, totaling 75 people and 37 people randomly selected. Data were collected using questionnaires, leadership style questionnaires, and performance points. The data collected was processed using regression analysis. Researchers use the help of SPSS software. The results showed that the regression model formed was Y = 180,638+0.398 X with a 23.3% influence contribution. Based on the results of hypothesis testing, a significance value of 0.003 < 0.05 was obtained. Based on the teaching and academic staff of FTIK IAIN Bukittinggi in the excellent category. The ability of educators and education staff of FTIK IAIN Bukittinggi in achieving work results at the stipulated time is one indicator of the success of the FTIK IAIN Bukittinggi leadership in leading. A leader is also essential to provide encouragement or work motivation to employees or their subordinates to perform as proactive and successful employees.
How Private Higher Education Institutions in Indonesia Changed Their Marketing Mix amidst the COVID-19 Pandemic
Authors: Pradipta Andamar
Published: March 2022

The COVID-19 pandemic has significantly affected industries to amass consumers, with the education industry not being an exception. For-profit higher education institutions (HEIs) in Indonesia were forced to rethink their marketing strategies amidst COVID-19 restrictions and a changing economy. Five private HEIs from four different cities in Indonesia have been the subjects of this study, focusing on how parents' demands and the pandemic drove changes in these HEIs' 7P marketing mix. In-depth interviews were conducted with representatives of these HEIs' marketing teams. It was found that three of the seven Ps in the HEIs, as mentioned above,' marketing mix, were changed (price, promotion, and process). It was concluded that Indonesian HEIs bear a distinct producer-consumer relationship that hinders patrons from making demands as freely as they would with other types of services. Future research should then look into this newly-discovered producer-consumer dynamic in other levels of education.
EFL Students’ Perceptions Of Online Learning During The Covid- 19 Pandemic: A Case Study
Authors: Rakaj Dorine
Published: March 2022

The COVID-19 pandemic has drastically changed many things, including education. This study aimed to examine students' perceptions of online learning during the COVID-19 pandemic. The study employed a quantitative approach. Data collection was done by distributing an online questionnaire to 100 selected undergraduate students majoring in English Language and Literature at the University of Prizren, Kosovo. The study's findings indicated that students had negative perceptions of online classes during the COVID- 19 pandemic. Lack of quality, lack of proper interaction and concentration, lack of computer skills were the major problems experienced by undergraduate students at the University of Prizren. Based on the research results, it can be concluded that the respondents of this study were not willing to accept their courses via online mode.
Rasch Model Analysis: Teacher Commitment Indicators by Experts Judgment
Authors: Asakir Ibnu , Hidayati Dian
Published: March 2022

Teacher commitment is the key to success in educational institutions. The school needs to measure the teacher's commitment to improving the quality of the school. The purpose of this study was to model expert judgment in the reliabilities and validity tests of Teacher commitment instruments using the Rasch model. The study involving 12 experts was conducted using a survey by assessing 18 items. Experts (respondents) are asked to evaluate the consistency of each item to represent one part of the Teacher commitment instrument. Expert judgment results using Rasch model analysis show that the average value of the logit scale is higher than logit 0.0. It is understood that more answering experts agree across a variety of items. The value Cronbach alpha, measuring reliability, i.e., the interaction between the person and the item as a whole, is seen as a value of 0.99, which means excellent. Person reliability value is estimated at 0.89, and item reliability is estimated at 0.60, indicating that the consistency of respondents' answers is good. However, the quality of items in the infrastructure is poor. It shows 17 items recommended being used as instruments to measureTeacher commitment, while 11 items are advised to be repaired.
The Use of Authentic Materials in Teaching English at Vocational High School
Authors: Handayani Hikmah Lusian , Dewi Dian Novita
Published: March 2022

The selection of appropriate teaching materials can be very important to make the student easier in learning English, especially in vocational high school. Teaching English at vocational school is also related to contextual teaching which must be related to the use of materials that are closer to the real world where the learners interact. Therefore, authentic materials become one of the materials that can be used in the teaching-learning process because it is made contextually or is related to real-life material. Additionally, the integration of local content-based materials also provides many benefits for the students in learning English. The goal of this study is to find out teachers’ perceptions on the implementation of authentic materials in English classrooms in vocational high schools. The participants were five English teachers from five vocational high schools located in Pacet, Mojokerto, East Java, Indonesia. The data of this research were gathered using a semi-structured interview. The data analysis technique included data reduction, data display, and drawing conclusions. The result reports that all teachers in vocational high schools in Pacet have positive perceptions of the use of authentic materials in teaching English. It also can be concluded that all the teachers are implemented authentic materials as well as integrate local content in their teaching.
Upaya Pengawas Dalam Meningkatkan Kemampuan Profesional Guru Melalui Supervisi Klinis Pada SMA Negeri Di Manado
Authors: Saneba Viginia , Rawis Joulanda A.M , Wullur Mozes Markus , Rotty Viktory N. J
Published: March 2022

Belum optimalnya fungsi supervisi klinis di SMA Negeri 10 Manado mendorong peneliti untuk mengklarifikasi masalah agar mendapatkan gambaran yang jelas tentang pelaksanaan supervisi klinis instruktur. Pendekatan dalam penelitian ini adalah kualitatif naturalistik (Bogdan dan Biklen, 1982). Kegiatan supervisi klinis oleh supervisor membantu guru memecahkan masalah pembelajaran yang berdampak positif terhadap kinerja guru. Hasil menunjukkan bahwa upaya pengawas mata pelajaran untuk meningkatkan keterampilan profesional guru SMA Negeri 10 Manado untuk guru mata pelajaran sangat baik. Hal ini terlihat dari rencana/program pengawasan yang dikembangkan dan pembinaan yang diberikan kepada dosen di bidang kualifikasi masing-masing, tanpa hasil yang signifikan, namun dosen pembimbing yang diteliti memberikan pengawasan klinis. belum cukup dilaksanakan sesuai tahapan supervisi klinis, namun supervisi klinis supervisor subjek penelitian berpengaruh kecil terhadap sivitas akademika SMA Negeri 10 Manado. Topik penelitian keterampilan profesional guru SMA negeri belum diteliti secara menyeluruh, yang memenuhi kriteria pendidik dan tenaga kependidikan.
English Speaking Lecturers’ Performances of Communication Strategies and Their Efforts to Improve Students’ Communicative Competence
Authors: Noviyenty Leffi , Morganna Ruly , Fakhruddin Fakhruddin
Published: March 2022

Regardless of varied lingua-cultural ideologies enriching the theories of communicative competence (CC), the four CC dimensions (e.g., linguistics, sociolinguistics, discourse, and communication strategies (CSs)) still become the main cores of English speaking (ES) classrooms. Of the four dimensions, CSs seem to be the most technical which deserve to be persistently studied. Hence, this study aimed to probe into ES lecturers’ performances of CSs, their efforts to improve students’ CC, and the impacts of their efforts on students’ learning according to students’ perspectives. Two ES lecturers and 10 students at a university in Indonesia were purposively selected to be the participants. They were observed and interviewed according to the study’s purposes. This study uncovered various CSs performed by ES lecturers according to several contexts, such as to understand spoken texts, to understand spoken recorded texts, and to overcome temporary communication difficulties. Various ES lecturers’ efforts were also revealed according to their functions to improve each dimension of CC. Most students perceived the lecturers’ efforts positively due to the impacts on their motivation, self-efficacy, collaborative skills, and metacognition. However, few students echoed negative perceptions about a lecturer’s native-speakerism-endorsed effort due to lingua-cultural issues. Implication, limitation, and recommendation are discussed.
A Review on Synthesis, Characterization and Applications of Cadmium Ferrite and its Doped Variants
Authors: Bagade Arun Vijay , Nagwade Pratik Arvind , Nagawade Arvind Vinayak , Thopate Shankar Ramchandra , Pund Sangita Nanasaheb
Published: March 2022

Ferrites have gained a lot of attention because of their diverse uses in domains including photocatalytic degradations, gas sensors, electronic devices, organic transformation catalysts, adsorption, and so on. This review focuses on cadmium ferrites and their numerous doped versions' production methodologies, characterization, and applications. The structural, electric, magnetic, and dielectric properties of cadmium ferrites are primarily influenced by the synthesis procedures and circumstances used during preparation. As a result, the main goal of this study was to provide the most often used synthesis processes, such as hydrothermal, co-precipitation, solvothermal, microwave-assisted, micro-emulsion, and solid state, as well as their benefits and drawbacks. Furthermore, the review focuses on the numerous characterization approaches used to investigate features such as optical, structural, magnetic, electric, and dielectric properties of cadmium ferrites. This analysis was further expanded to include applications in some of the most well-studied domains, such as photocatalysis and gas sensing.
Isolation, Characterization, and Anti-Cancer Activity of Kaempferol-6-methoxy7-O-glucosidefrom Lantana Camara Flowers
Authors: R.Benjamin R.Benjamin , A.Akilan A.Akilan , S.Senguttuvan S.Senguttuvan
Published: March 2022

Traditionally, many indigenous plants are identified for their impending supply of medicinal compounds which are used in traditional medicine. Herein, the in-vitro anti-cancer property of Kaempferol-6-methoxy7-O-glucoside was once isolated from Lantana camara flowers. This compound was once characterised through 13C, 1H NMR, FT-IR and UV spectroscopy. Lantana camara flowers have been found the very best anti-cancer activity due to absolute best flavonoids content. This medicinal plant has potential flavonoids composition which should supply scientific evidences for the usage of in the remedy of most cancers.
Structural Attributes of Organic Compounds for UV-Spectrophotometric Determination of Dissociation Constant – A Systematic Review
Authors: Thangavel Neelaveni , Al Bratty Mohammad , Hassan Al Hazmi Hassan Al Hazmi , Asim Najmi Asim Najmi , Sivadasan Durgaramani
Published: March 2022

UV-spectrophotometric determination of dissociation constant (pKa) is used routinely in various research fields. This review highlights the structural attributes of organic compounds that exhibit distinct pH-sensitive UV-absorbance for ionized and unionized species qualifying for pKa measurement. Organic compounds must possess a double bond, the chromophore adjacent to the ionizing functional group. Compounds bearing up to five sigma bonds between the chromophore and ionizing group are eligible for UV-spectrophotometric determination of pKa. This review serves as a quick guide for knowledge about structural requirements expediting pKa determination by UV-spectrophotometry. Besides, the study also identified the gap in research on pKa in drug discovery and food chemistry, revealing the necessity of determining pKa at the early stages of drug and food research to enhance the success rate in their development.
Anthracene and 1,8-napthalimide aminothiazole hybrids: Synthesis, Antimicrobial activity and Molecular Docking Studies
Authors: Rambabu Palabindela Rambabu Palabindela , Myadaravenia Prabhakar , Rajashekar Korra Rajashekar Korra , Himabindu Mekala Himabindu Mekala , Mamatha Kasula Mamatha Kasula , DEVENDAR BANOTHU DEVENDAR BANOTHU
Published: March 2022

With our efforts to develop potent antimicrobial agents, a series of anthracene and 1,8-napthalimide aminothiazole analogues were synthesized and characterized by using fundamental spectral analysis. All of the synthesized hybrids were screened for their anti-microbial activities against the bacterial strains E. coli, B. subtillis, and S. aureus, and the fungal strains A. niger and C. albicans. Among the compounds investigated, compounds 4c, 4d, and 6c exhibited the most potent antimicrobial activity. Fluconazole and Norfloxacin were used as standard drugs for antifungal and antibacterial activity. The molecular docking investigation revealed that the compounds 4c, 4d and 6c displayed the lowest binding energy values within the promoter regions of the PDB ID (1JIJ, 4WMZ). The in vitro antimicrobial activity results are well corroborated with the molecular docking results.
Thermodynamic and Acoustical study of 1-(4-Fluorophenyl)-3-(napthalen-1-yl)-2-propen-1-one
Authors: Sowmya Balthikumeru Padmayya
Published: March 2022

The various concentrations (ranging from 0.01M to 0.1 M) of synthesized 1-(4-fluorophenyl)-3-(napthalen-1-yl)-2-propen-1-one1 (4FNP) solutions in DMF were prepared. Density (ρ), viscosity (η) and ultrasonic velocity (U) measurements of pure solvent and solutions were carried out at 288.15 K, 293.15 K, 298.15 K and 303.15 K. The observed values of ρ, η and U were found at 298.15K in the range of 944.50-954.25 kg.m-3, 0.8440 x10-3-1.4195 x10-3 Nm-2s and 1454-1513 ms-1 respectively. The values of η and U decreased with increase of temperature, reveals the weakening of intermolecular forces between the molecules at higher temparature. Calculated thermodynamic parameters such as free volume, Gibbs free energy and internal pressures were interpreted in terms solute-solvent interaction. Increase of Gibbs free energy with increase of concentration clearly indicates the strong interaction between solvent and solute molecules. Decrease of free volume with increase in mole fraction gives evidence of strong intermolecular interaction in solution. Positive excess values of internal pressure represent the presence of dispersive forces between molecules.
In-Vitro Anti-Inflammatory Studies of Flavonoids from Hibiscus Rosa-Sinensis Linn
Authors: K. HEMA K. HEMA , Ganana Rani S. Vasthi , Kumar G. Praveen
Published: March 2022

Flavonoids are a phytochemical substance found in a variety of plants, fruits, vegetables, and leaves that contain significant pharmacological activities such as anti-cancer, antioxidant, anti-inflammatory, anti-viral, and be beneficial in treating several disorders. The aim of the present study is the anti-inflammatory activity of the ethyl acetate fraction obtained from the fresh flowers of Hibiscus rosa-Sinensis Linn. double yellow flowers with red color at the center was evaluated by in vitro hypotonicity induced RBC membrane stabilization of red blood cells. The effect of inflammation condition was studied on erythrocytes exposed to the hypotonic solution. The ethyl acetate fraction was found to show membrane stabilizing activity, optimum at 100µg.
The effect of sarcopenia on outcomes following orthopaedic surgery
Authors: Brzeszczynski Filip , Brzeszczynska Joanna , Duckworth Andrew D. , Murray Iain R. , Simpson A. Hamish R. W. , Hamilton David F.
Published: March 2022

Aims

Sarcopenia is characterized by a generalized progressive loss of skeletal muscle mass, strength, and physical performance. This systematic review primarily evaluated the effects of sarcopenia on postoperative functional recovery and mortality in patients undergoing orthopaedic surgery, and secondarily assessed the methods used to diagnose and define sarcopenia in the orthopaedic literature.

Methods

A systematic search was conducted in MEDLINE, EMBASE, and Google Scholar databases according to the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. Studies involving sarcopenic patients who underwent defined orthopaedic surgery and recorded postoperative outcomes were included. The quality of the criteria by which a diagnosis of sarcopenia was made was evaluated. The quality of the publication was assessed using Newcastle-Ottawa Scale.

Results

A total of 365 studies were identified and screened, 26 full-texts were reviewed, and 19 studies were included in the review. A total of 3,009 patients were included, of whom 2,146 (71%) were female and 863 (29%) were male. The mean age of the patients was 75.1 years (SD 7.1). Five studies included patients who underwent spinal surgery, 13 included hip or knee surgery, and one involved patients who underwent fixation of a distal radial fixation. The mean follow-up was 1.9 years (SD 1.9; 5 days to 5.6 years). There was wide heterogeneity in the measurement tools which were used and the parameters for the diagnosis of sarcopenia in the studies. Sarcopenia was associated with at least one deleterious effect on surgical outcomes in all 19 studies. The postoperative rate of mortality was reported in 11 studies (57.9%) and sarcopenia was associated with poorer survival in 73% (8/11) of these. The outcome was most commonly assessed using the Barthel Index (4/19), and sarcopenic patients recorded lower scores in 75% (3/4) of these. Sarcopenia was defined using the gold-standard three parameters (muscle strength, muscle quantity or quality, and muscle function) in four studies (21%), using two parameters in another four (21%) and one in the remaining 11 (58%). The methodological quality of the studies was moderate to high.

Conclusion

There is much heterogeneity in the reporting of the parameters which are used for the diagnosis of sarcopenia, and evaluating the outcome of orthopaedic surgery in sarcopenic patients. However, what data exist suggest that sarcopenia impairs recovery and increases postoperative mortality, especially in patients undergoing emergency surgery. Further research is required to develop processes that allow the accurate diagnosis of sarcopenia in orthopaedics, which may facilitate targeted pre- and postoperative interventions that would improve outcomes. Cite this article: Bone Joint J 2022;104-B(3):321–330.
A change is as good as a rest
Authors: Keogh Kenneth
Published: March 2022

Our Editor reflects on his time with the Bulletin as he bids us farewell.
Optimism bias or an inconvenient truth?
Authors: Mortensen Neil
Published: March 2022

Our President reflects on our response to COVID-19 and looks forward to the future of surgical training.
Illumination uniformity correction by using dynamic gray filters in a lithography system
Authors: Gong Shuang , Yang Baoxi , Huang Huijie
Published: March 2022

Illumination-integrated nonuniformity (IINU) is a key factor in determining resolution and critical dimension uniformity, which are important performance parameters in advanced lithography systems. To further reduce the IINU, a uniformity correction technology was adopted. In this paper, a low-cost and simple-structure approach for uniformity correction with higher flexibility and better correction capability is proposed. The method is composed of two dynamic gray filters with a specific transmittance distribution, which can form different correction curves by controlling the displacement of the gray filters. The frequency limitation of the defocus uniformity correction system is analyzed. A uniformity correction system design method based on the particle swarm optimization algorithm is introduced. Based on the proposed method, a dynamic gray filter uniformity correction system is applied to an illumination optical system. The experimental results show that the value of the corrected IINU reaches less than 0.7%, which satisfies the IINU requirements of advanced lithography systems. This verifies the higher flexibility and better correction capability of the proposed method.
Liquid crystal microlens array with positive and negative focal lengths
based on a patterned electrode
Authors: Xu Miao , Xue Yingying , Li Senhao , Zhang Lyudi , Lu Hongbo
Published: March 2022

A liquid crystal microlens array (LCMLA) with positive and negative focal lengths based
on a ring-array patterned electrodes is demonstrated. By carefully
designing patterned electrodes with a circular electrode array area
and outer ring electrode region area, the switching of the positive
and negative lens effect can be easily achieved in a single cell. A
positive lens effect appeared when the voltage was applied to the
outer ring electrode region and the top substrate. The focal length
changed from infinity to 1 mm as the voltage varied from 0 to

3

V

r
m
s

. A negative lens effect occurred when
the voltage was applied to the circular electrode array and the top
substrate. The focal length varied from infinity to

−

1

m
m

when the voltage changed from 0 to

2

V

r
m
s

. The imaging properties of the LCMLA
at different voltages are evaluated. Our LCMLA, with simple structure,
low driving voltage, and good stability, has potential applications in
optical communication, imaging processing, and displays.
On the impact of launch power optimization and transceiver noise on the performance of ultra-wideband transmission systems [Invited]
Authors: Buglia H. , Sillekens E. , Vasylchenkova A. , Bayvel P. , Galdino L.
Published: March 2022

Ultra-wideband transmission is a promising, cost-effective solution to meet the increasing demand for data traffic in optical fiber systems. However, system performance and quality of transmission (QoT) are limited by fiber nonlinearity, in particular, interchannel stimulated Raman scattering (ISRS), leading to a power transfer from short to long wavelengths. As the result, per-channel launch power optimization is required to maximize the system throughput. In this paper, we investigate how the transceiver noise and launch power optimization impact the total throughput and the per-channel QoT for transmission bandwidths of up to 20 THz, using the S-, C-, and L-bands. To measure the gains through the optimum launch power profile, a spectrally uniform launch power is used as a baseline. Through experimental analysis and theoretical modeling, the main limitations constraining the achieved data throughput of 178 Tb/s over a continuous bandwidth of 16.83 THz and 40 km were investigated. The impact of the launch power optimization and the transceiver constrained signal-to-noise ratio (SNR) are analyzed and compared, and the approaches to overcome data throughput limitations are considered. An extensive theoretical investigation for different system configurations is described, demonstrating the trade-off between ISRS impact and transceiver noise. The former degrades the QoT and increases the gains in performance obtained by optimizing the launch power, while the latter reduces these gains and the SNR variation across the bandwidth, with a major impact over short distances.
Method to measure thermal impedance for all-active lasers using the athermalisation condition
Authors: Mickus Dovydas , Murphy Caolan , Mckenna Robert , Donegan John F.
Published: March 2022

Thermal impedance is an important material property which can be used in the design, optimisation and operation of semiconductor lasers. In this study, a new method is proposed for measurement of thermal impedance for all-active semiconductor lasers, using the athermalisation condition. This method is capable of measuring thermal impedance of several device sections at the same time for simple devices, while being capable of measuring the thermal impedance of the device as a whole for more complex structures. Three DBR devices of the same material properties were evaluated and the average impedance length product (Z
th
L) was determined to be 29.3±2.1
o
C μm/mW and 39.33±2.8
o
C μm/mW for the gain and grating sections respectively. Additionally, thermal impedance length product of the entire widely tunable Vernier device based on the same material was also determined to be 31.3±0.5
o
C μm/mW.
Four-wave mixing in 1.3  μm epitaxial quantum dot lasers directly grown on silicon
Authors: Duan Jianan , Dong Bozhang , Chow Weng W. , Huang Heming , Ding Shihao , Liu Songtao , Norman Justin C. , Bowers John E. , Grillot Frédéric
Published: March 2022

This work compares the four-wave mixing (FWM) effect in epitaxial quantum dot (QD) lasers grown on silicon with quantum well (QW) lasers. A comparison of theory and experiment results shows that the measured FWM coefficient is in good agreement with theoretical predictions. The gain in signal power is higher for p-doped QD lasers than for undoped lasers, despite the same FWM coefficient. Owing to the near-zero linewidth enhancement factor, QD lasers exhibit FWM coefficients and conversion efficiency that are more than one order of magnitude higher than those of QW lasers. Thus, this leads to self-mode locking in QD lasers. These findings are useful for developing on-chip sources for photonic integrated circuits on silicon.
Loss to follow-up in a population-wide brief contact intervention to prevent suicide attempts - The VigilanS program, France
Authors: Fossi Larissa Djembi , Debien Christophe , Demarty Anne-Laure , Vaiva Guillaume , Messiah Antoine
Published: March 2022

Background

Brief Contact Interventions (BCIs) after a suicide attempt (SA) are an important element of prevention against SA and suicide. VigilanS generalizes to a whole French region a BCI combining resource cards, telephone calls and sending postcards, according to a predefined algorithm. However, a major obstacle to such real-life intervention is the loss of contact during follow-up. Here, we analyze the occurrence of loss of follow-up (LFU) and compare characteristics of patients LFU with follow-up completers.

Methods

The study concerned patients included in VigilanS over the period from 1st January 2015 to 31 December 2018, with an end of follow-up on 1st July 2019. We performed a series of descriptive analysis and logistic regressions. The outcome was the loss to follow-up, relative to the 6th month call marking the end of the follow-up; the predictive variables were the characteristics of the patient at entry and during follow-up. Age and sex were considered as adjustment variables.

Results

11879 inclusions occurred during the study period, corresponding to 10666 different patients. The mean age was 40.6 ± 15 years. More than a third were non-first suicide attempters (46.6%) and the most frequent means of suicide was by voluntary drug intoxication (83.2%). 8335 patients were LFU. After simple and multiple regression, a significant relationship with loss to follow-up was identified among non-first suicide attempters, alcohol consumers, patients having no companion on arrival at the emergency room, patients who didn’t make or receive any calls. An increased stay in hospital after a SA was a protective factor against loss of follow-up.

Conclusion

A majority of patients were lost to follow-up by the expected surveillance time of 6 months. Characteristics of lost patients will help focusing efforts to improve retention in the VigilanS program and might give insights for BCI implemented elsewhere.
Relationship between alveolar-bone morphology at the mandibular incisors and their inclination in adults with low-angle, skeletal class III malocclusion—A retrospective CBCT study
Authors: Lu Cai-Lian , Li Bo-Wen , Yang Mi , Wang Xiao-Qin
Published: March 2022

Objective

To quantitatively study the effect of the labial inclination of the mandibular central incisors on the surrounding cortical and cancellous-bone morphology among patients with low-angle, skeletal class III malocclusion, by using cone-beam computed-tomography (CBCT) imaging.

Materials and methods

The CBCT images of 60 patients with low-angle, skeletal class III malocclusion were divided into lingual-inclination, upright, and labial-inclination groups. The height of the alveolar bone and the thickness and area of the cortical, cancellous, and total alveolar bone were measured separately on each side of the mandibular central incisors.

Results

The thickness of the labial cortical bone from 6 mm below the cementoenamel junction (CEJ) to the root apex; the thickness of the labial cancellous bone at the root apex; the total thickness of the alveolar bone at the root apex; the area of labial cortical bone; the total area of labial alveolar bone; and the height of the labial alveolar bone were highest in the labial-inclination group (all P<0.05). All these variables were positively correlated with the labial inclination of the mandibular central incisors (all P<0.05). There were no statistical differences between the groups for any of the measurements on the lingual side of the teeth (P>0.05).

Conclusion

The morphology of the alveolar bone on the labial but not the lingual side of the mandibular central incisors was statistically significantly correlated with the labial inclination of those teeth in patients with low-angle, skeletal class III malocclusion.
Hailing black holes: Rhetorical realism in the age of hyperobjects
Authors: Zager Brian
Published: March 2022

This article addresses the challenge philosophical realism poses to the field of rhetoric by exploring the possibility of symbolic communion with nonhuman entities. As a matter of framing, I invoke Timothy Morton’s concept of the hyperobject to better understand the complexities
of communicating with and about sublime nonhuman objects such as black holes. I then delineate how the stylistic modality of the weird best exploits the chasm between autonomous thingness and human (re)presentation that is a primary source of consternation for rhetorical realism. Finally,
I draw from Kathe Koja’s (1991) novel The Cipher to reconsider a bizarre rhetoric of black holes which displays the omnipresent tension of accessible-alterity characteristic of the struggle to rhetorically breach the nonhuman world.
Celebrity manufacture theory: Revisiting the theorization of celebrity culture
Authors: Matusitz Jonathan , Simi Demi
Published: March 2022

Celebrity Manufacture Theory postulates that both the emergence of celebrities and our fascination with them are shaped by the media. Another premise of the theory is that a person’s fame does not necessarily correlate with the talent or achievements of that person. Rather, it
often depends on the way the media manufacture that person as a celebrity. Today’s celebrity culture extols a particular type of fame ‐ one created and sustained by media production. Hence, there is a painstaking method of personification and commodification at work. The pursuit
for authenticity is not the objective of Celebrity Manufacture Theory. For this reason, the theory is an example of a ‘manipulation theory’. It describes how media industries manipulate audiences through mass-mediated celebrity production. To best understand Celebrity Manufacture
Theory, four major tenets are thoroughly described in this article: (1) media mirage, (2) democratization of spotlight, (3) commodity and (4) cultural mutation.
Public programmes in eco-somatics
Authors: Bettmann Robert
Published: March 2022

Dance and somatic educators have an important role to play addressing estrangement from the natural world. In this article, author Robert Bettmann considers how an experiential education model may apply to design of public eco-somatic programmes, and how such programmes may empower practitioners within broader efforts to reconnect humanity to the natural world. Many eco-somatic programmes focus on transmission of information from a teacher directly to a student in a natural context, and an experiential education curriculum model may encourage design of more self-guided approaches appropriate for larger groups. The author reviews theories at the intersection of dance, somatics, and the environment, including the theory of Somatic Ecology, and the example of the Anacostia Swim Club.
User-Friendly-Guides Series
Authors: Lee Haeeun , Maracine Iulia
Published: March 2022

User-Friendly-Guides Series (hereinafter UFGs, 2019–present) is a series of on/offline movement-based workshops that were developed by Ludic Collective. This practice specifically focuses on exploring various perceptual, sensorial and bodily strategies to position oneself in relation to other living organisms. Our wish is to propose an uncanny realm, where morphological differences and perceptual gaps overlay with shared evolutionary histories between us and the other organisms. We hope the UFGs will encourage the participants to de-centre their perspectives when encountering other-than-human beings or interacting with their environment in everyday life. For this issue of JDSP, we are sharing three audio-visual works (‘Planthuman’, ‘Embodying the watery beginnings of animals’ and ‘The arms of an octopus’), as well as a series of audio-only versions of somatic workshops. The viewers/participants are free to engage with our work in any way that feels relevant to them.
Nature as witness: Authentic Movement and the local animate earth
Authors: Gilmour Lindsay
Published: March 2022

For a year, I walk every morning and most evenings witnessing the land evolve and change with the lengthening and shortening of days. As a long-time student of the Discipline of Authentic Movement, I pay close attention to how I witness the land and non-human animals, and how witnessing changes my experience of place. I question: how is it different if I take in the whole of nature or focus on the singular wet body of a slug? What can I learn from tracking the experience in my own body as I witness the slow turning of a flower towards the sun or the swift bounding of a humming bird? And if I am witnessing the land and non-human animals, are not they witnessing me? Inspired by David Abram’s work and phenomenology’s concepts of ‘intersubjectivity’ and the ‘life world’, this article explores the reciprocal relationship between myself and the land through the Discipline of Authentic Movement.
Reflections on Stony Creek Collective
Authors: Crisp Rosalind , Roberts Lisa
Published: March 2022

A photo essay reflecting on Stony Creek Collective – a multi-art form project in response to the destruction of the South-East Australian foothill forests. In 2019, Australia was in an extinction crisis. In the summer of 2019/2020, 85 per cent of Australia’s south-east forests burnt. Billions more plants, animals, birds, insects, lizards perished. Clear fell logging, removing all living things from the forest, resumed six months later. My flat surfaces all laid down in the cool dirt. I dance, she photographs. How to live with this ruin?
Stages of Tectonic Blackness
Authors: Tokunow Miles , Letcher Lazarus , Breeze Nikesha , Ashkin Sarah , Delany Brittany
Published: March 2022

Stages of Tectonic Blackness is a many-staged performance project and video piece tarrying with the paralleled processes of dehumanization and extraction, emergence and rebellion, as sustained by Black bodies and rock bodies. In our cultural moment so racked with urgency, Stages of Tectonic Blackness invites those engaging in the work to move slowly in order to feel more deeply into this time. As a durational practice of Black queer resistance, this work prioritizes Black experience, Black time, Black bodies and our racialized relationship to the earth.
Dance, theatre and artivism on a planet in transformation
Authors: Gambogi Tiago
Published: March 2022

In this article, Tiago Gambogi analyses his artistic trajectory looking at the range of his creative works and disciplines, unveiling the concepts and strategies used in his artivist practice.
Performative Video Tutorials: An eco-somatic approach to geopolitics
Authors: Hirtz Mira
Published: March 2022

This contribution presents six Performative Video Tutorials, which were created in response to Bruno Latour’s ideas about the terrestrial. The video tutorials combine the DIY character of tutorials with geopolitical and philosophical reflections through the use of somatic practices. Notions such as grounding, folding and dwelling are being taken from the theoretical work of Latour and tested as scores for somatic work. The viewers are hereby invited to shift their attention through bodily and sensorial experiments, and to witness possible effects on their ways of thinking.
This urban wild field in Hackney Marshes
Authors: Loussouarn Claire
Published: March 2022

In the heart of the capital, Hackney Marshes is an oasis of country fields, which have been spared from development as a common land. The field behind the Lee Valley Ice Centre is a shelter for so-called weeds, dandelion, nettle, mugwort, plantain, cleavers, cow parsley, yarrow and many others. This is where we found our habitat. Claire rooted her movement practice in this spot in 2017 and saw it grow and blossom when she started to collaborate with Dominique in 2018. Each month of the year and throughout the seasons they meet. Claire moves. Dominique resonates. The accompanying film is a first glimpse into the accumulated (and still being filmed) material, which is currently being shaped into a four screen installation.
Suomenlinna | Gropius: Two Contemplations on Body, Movement and Intermateriality, Paula Kramer (2021)
Authors: Kneale Hilary
Published: March 2022

Review of: Suomenlinna | Gropius: Two Contemplations on Body, Movement and Intermateriality, Paula Kramer (2021)

Axminster: Triarchy Press, 168 pp.,

ISBN 978-1-91374-324-6, p/bk, £17.50
Octree-Generated Virtual Mesh for Improved Contact Resolution in CFD-Dem Coupling
Authors: Studeník Ondřej , Kotouč Šourek Martin , Isoz Martin
Published: March 2022

The present work is focused on improving the efficiency of a computational fluid dynamics (CFD) – discrete element method (DEM) solver allowing for computations with non-spherical solids. In general, the combination of CFD and DEM allows for simulations of freely moving solid particles within a computational domain containing fluid. The standard approach of CFD-DEM solvers is to approximate solid bodies by spheres, the geometry of which can be fully defined via its radius and center position. Consequently, the standard DEM contact models are based on an overlap depth between particles, which can be easily evaluated for a sphere-sphere contact. However, for a contact between two non-spherical particles, the overlap depth cannot be used and has to be replaced by the more general overlap volume. The precision of the overlap volume computation is (i) crucial for the correct evaluation of contact forces, and (ii) directly dependent on the computational mesh resolution. Still, the contact volume evaluation in DEM for arbitrarily shaped bodies is usually by at least one order of magnitude more demanding on the mesh resolution than the CFD. In order to improve the computational efficiency of our CFD-DEM solver, we introduce the concept of an OCTREEbased virtual mesh, in which the DEM spatial discretization is adaptively refined while the CFD mesh remains unchanged.
Maximum Modulus Estimates for the Linear Steady Stokes Equations in Domains of Rn(n ? 2)
Authors: Varnhorn W.
Published: March 2022

A maximum modulus estimate for the Stokes system in bounded and unbounded domains of Rn(n 2) is established via methods of hydrodynamical potential theory. Using a suitable potential ansatz in form of hydrodynamical layer potentials the method is based on the unique solvability of the resulting boundary integral equations' system of Fredholm type. In addition, in case of bounded domains, a projection onto the normal eld on the boundary is required.
The Impact of Digital Navigation on Travel Behaviour
Authors: Metz David
Published: March 2022

Digital navigation – the combined use of satellite positioning, digital mapping and route guidance – is in wide use for road travel yet its impact is little understood. Evidence is emerging of significant changes in use of the road network, including diversion of local trips to take advantage of new capacity on strategic roads, and increased use of minor roads. These have problematic implications for investment decisions and for the management of the network. However, the ability of digital navigation to predict estimated time of arrival under expected traffic conditions is a welcome means of mitigating journey time uncertainty, which is one of the undesirable consequences of road traffic congestion. There is very little available information about the impact of digital navigation on travel behaviour, a situation that needs to be remedied to enhance the efficiency of road network operation.
Listening Twice to Bernhard Gander's "Peter Parker"
Authors: Petri-Preis Axel
Published: March 2022

In this article, Axel Petri-Preis illustrates the format »2xHören« (»Listening Twice«) by means of the composition »Peter Parker« by Bernhard Gander, which is inspired by the movements of Spider-Man. Listening to the piece twice - the first time before, the second time after a conversation between pianist Joonas Ahonen, composer Bernhard Gander and Axel Petri-Preis as moderator, enables the audience to hear the piece with new ears the second time.
Auditives Erzählen
Authors: Schenker Ina
Published: March 2022

Hörspielserien erzählen Geschichten und zugleich von ihren Produktions- und Rezeptionskontexten. Ina Schenker setzt mit einer transnationalen und transmedialen Perspektive exemplarische radio dramas aus Ozeanien und Subsahara-Afrika in Bezug zur deutschsprachigen auditiven Medienkultur. Philologische Rahmungen werden agil, was nicht nur dem inhaltlichen Bezug zu Diskursen rund um Leben und Wissen geschuldet ist, sondern auch den Ausdrucksformen der Hörspielserien selbst. Auditives Erzählen ist vielschichtig: es regt an und auf, gibt Motivation und unterhält, weckt Emotionen und Geschichten - ist politisch und partizipativ.
Desde incentivar la demanda a regular la oferta: Políticas chilenas de admisión en formación docente
Authors: Montero Ariel , Fernández M. Beatriz
Published: March 2022

La discusión académica sobre políticas de admisión en formación docente se centra en sus efectos sobre matrícula y desempeño docente posterior. Este estudio, en cambio, examina los fundamentos y mecanismos presentes en estas políticas en los últimos 20 años en Chile, a través del análisis de contenido cualitativo de documentos. Los resultados identifican los fundamentos, problemas y soluciones promovidas en tres periodos. Las conclusiones reconocen como elementos de continuidad el cuestionamiento a la calidad de la formación docente y la promoción de la admisión de estudiantes con alto desempeño académico. También identifican el tránsito desde mecanismos de incentivo a la demanda a mecanismos para regular la oferta de programas de pedagogía, y desde una perspectiva de equidad como “movilidad por competencia” a una “movilidad patrocinada” (Guinier, 2003). El estudio discute el riesgo de estas políticas de reducir la diversidad del cuerpo docente en contextos desiguales, y recomienda diversificar los criterios de admisión, incorporando aspectos no académicos, potenciando vías inclusivas de admisión y políticas que apoyen las diferentes trayectorias académicas de los estudiantes. Estas recomendaciones son relevantes para contextos en que se están diseñando o implementado políticas de admisión para mejorar el perfil académico de ingreso de estudiantes de pedagogía.
Circular Economy: “Rising Star” and Challenges
Authors: Rubik Frieder , Schmidt Sabrina , Wiesemann Eva
Published: March 2022

Introduction for the special issue
Circularity and repair policy in the European Union
Authors: Dalhammar Carl , López Dávila Mariana , Milios Leonidas , Luth Richter Jessika
Published: March 2022

Prolonging the lifetime of products through repair is a key strategy of a circular economy. But several barriers impede the repair of consumer products. How can repair policies at different levels address these barriers?
Verteilungswirkungen einer CO2-Bepreisung in Gegenwart und Zukunft
Authors: Held Benjamin
Published: March 2022

Die Bepreisung von THG-Emissionen stellt ein wichtiges Instrument der Klimaschutzpolitik dar. Oft wird gegen eine solche Bepreisung das Argument einer mangelnden sozialen Verträglichkeit ins Feld geführt. Derzeit könnte dies aufgrund der im Durchschnitt mit dem Einkommen ansteigenden THG-Emissionen durch die Einführung eines Ökobonus weitgehend entkräftet werden. Doch wie sieht dies in Zukunft aus?
Does online advertising stimulate overconsumption?
Authors: Frick Vivian , Gossen Maike , Kettner Sara Elisa
Published: March 2022

Alongside its many potentials for sustainable consumption, digitalization also bears considerable risks. Online marketing strategies may increase consumption levels. New results of an experimental study provide multifaceted insights for future research and marketing practice.
Hubungan Riwayat Asma dan Riwayat Komorbiditas dengan Kejadian Pneuomonia pada Balita (Studi di Wilayah Kerja Puskesmas Bandaharjo Kota Semarang)
Authors: Widya Widya , Widjanarko Bagoes , Kartini Apoina , Sutiningsih Dwi , Suhartono Suhartono
Published: March 2022

Background: The incidence of pneumonia in children under five in the working area of the Bandaharjo Community Health Center in 2017 was 443 cases, 2018 was 328 cases, 2019 was 485 cases and in 2020 to June was 231 cases. A history of asthma and a history of comorbidities (anemia and diarrhea) is thought to be one of the determining factors that can cause children under five to develop pneumonia. The purpose of this study was to analyze the history of asthma and comorbid history associated with the incidence of pneumonia in children under five in the Bandaharjo Community Health Center, Semarang City.Methods: This observational study used a case control design used in this study, with a sample of 80, namely 40 case samples and 40 control samples. The study population was all toddlers who seek treatment and live in the working area of Puskesmas Bandaharjo. The sample of cases in this study were toddlers who had pneumonia in January-June 2020, while the control sample was toddlers who did not have pneumonia 1 in January-June 2020. Data collection was through interviews. Data analysis used chi-square test and multiple logistic regression.Results: There was a relationship between history of asthma (p; 0.01; OR 19.5; 95% CI 6.23-61.15), history of comorbidities (p; 0.01; OR 22.91; 95% CI 5, 97-87,83) with the incidence of pneumonia in children under five.Conclusion: History of asthma and history of comorbidity have a strong relationship with the incidence of pneumonia in children under five in the working area of the Bandaharjo Community Health Center, Semarang City.