Preferred Position Research Articles

Social adaptation features of Chinese students to online learning in a university

The article presents the results of a search sociological study conducted in September-October 2023 on the problem of impact of online learning practices on the social adaptation of foreign students in a Russian university. The empirical objects were Chinese citizens studying at Lomonosov Moscow State University and currently located on the territory of Russia. In the research, the online questionnaire method provided answers to questions about the attitude of Chinese students to organisation of the educational process, to the practices of their interaction and communication in small study groups. It has been empirically proven that the attitude of Chinese students to any form of education depends on how much the issue of overcoming the language barrier and building intercultural communication has been resolved in a particular educational practice. At the same time, a positive attitude towards online learning is associated by Chinese students with the opportunity to study without having to stay in the territory of the Russian Federation, and a negative one is associated with communication problems, in particular, with the lack of direct communication with a teacher or supervisor. It was revealed that the most psychologically comfortable leaning forms for Chinese students are online classes. There is significant evidence of this category of students’ preference for a separate position, being inside their foreign cultural group and social circle. A more general project on the study of social well-being of students with special educational needs, has been specifically identified as a promising direction for the development of the research topic.

Characteristics of the chloroplast genome of Camellia insularis

In this study, the chloroplast genome of Camellia insularis Orel & Curry was sequenced using high-throughput sequencing technology. The results showed that the chloroplast genome of C. insularis was 156 882 bp in length with a typical tetrad structure, encoding 132 genes, including 88 protein-coding genes, 36 tRNA genes, and 8 rRNA genes. Codon preference analysis revealed that the highest number of codons coded for leucine, with a high A/U preference in the third codon position. Additionally, 67 simple sequence repeats (SSR) loci were identified, with a preference for A and T bases. The inverted repeat (IR) boundary regions of the chloroplast genome of C. insularis were relatively conserved, except for a few variable regions. Phylogenetic analysis indicated that C. insularis was most closely related to C. fascicularis. Yellow camellia is a valuable material for genetic engineering breeding. This study provides fundamental genetic information on chloroplast engineering and offers valuable resources for conducting in-depth research on the evolution, species identification, and genomic breeding of yellow Camellia.

Comparison of Comfort and Patient Preference of Common and a Novel Position for Ultrasound-Guided Carpal Tunnel Injections.

This study compared levels of discomfort among three positions for ultrasound-guided carpal tunnel injections (USCTI) to potentially facilitate and improve the procedure's tolerability in treating carpal tunnel syndrome (CTS). Ambulatory Veterans referred for electromyography (EMG) evaluation of CTS were eligible for the study; a total of 30 participants were evaluated. Participants were asked to hold three different positions: 1) Hypersupination, 2) Airplane, and 3) total supported abduction (TSA). Participants rated their pain level, ease of performing/holding each position, exacerbation of underlying symptoms, and position preference. Results were analyzed with two-way repeated measures ANOVA. Hypersupination was determined to be the least preferred and most painful position to hold, demonstrating a statistically significant increase in the Numeric Rating Scale score for pain during the procedure compared with Airplane and TSA, which were not significantly different from one another. Pre-procedure neck, shoulder, elbow, and wrist pain were not significantly associated with intra-procedure pain. When performing USCTI, patient comfort can be optimized by avoiding Hypersupination. Utilizing the Airplane or TSA positions may provide similar access for ulnar approach injections while inducing lower levels of discomfort. Clinical space, resources, patient mobility, and laterality of procedures may further guide one's selection among the positions.

Satisfaction of Paediatric Oncology Patients, Survivors, and Nurses with the Position of Their Totally Implantable Venous Access Port (SPACE-Study)

BackgroundTo compare paediatric oncologic vascular access ports located on the anterior thoracic wall to ports on the lower lateral thoracic wall, in terms of perceived port-related hindrance and scar-quality. MethodsA cross-sectional survey study including paediatric oncology patients (≥8-<19 yrs), caregivers (in patients <8 yrs), survivors (>22 yrs with only anterior ports) and nurses of the Princess Máxima Center, the Netherlands, was performed. The survey consisted of questions regarding satisfaction, hindrance during daily life, and port position preference. For survivors, scar-quality was assessed using the validated Patient and Observer Scar Assessment Scale (POSAS 2.0); a high score (i.e., a displeasing scar) was defined as a score higher than the third quartile of the median for that question. ResultsIn total, 147 participants were included; 83 patients/caregivers, 31 survivors, and 33 nurses. Overall, 81 % was satisfied with the position of their port. Satisfaction, hindrance and complications did not differ between anterior and lower lateral ports. For the anterior position, minimal pressure on the port during daily life was a mentioned reason to prefer this position. For the lower lateral position, less visibility of the scar and easiest access were mentioned. Of all survivors with an anterior port scar, one in five had a displeasing scar and all scars observed were widened. Female patients preferred a lower lateral port, and scar-quality was better for left-sided port scars. ConclusionThe port position should be chosen together with patients/caregivers based on the (dis-)advantages of each position, as identified by this study. Level of EvidenceII.

Mainly Visual Aspects of Emotional Laterality in Cognitively Developed and Highly Social Mammals-A Systematic Review.

Several studies have shown that emotions are asymmetrically represented in the human brain and have proposed three main models (the 'right hemisphere hypothesis', the 'approach-withdrawal hypothesis' and the 'valence hypothesis') that give different accounts of this emotional laterality. Furthermore, in recent years, many investigations have suggested that a similar emotional laterality may also exist in different animal taxa. However, results of a previous systematic review of emotional laterality in non-human primates have shown that some of these studies might be criticized from the methodological point of view and support only in part the hypothesis of a continuum in emotional laterality across vertebrates. The aim of the present review therefore consisted in trying to expand this survey to other cognitively developed and highly social mammals, focusing attention on mainly visual aspects of emotional laterality, in studies conducted on the animal categories of horses, elephants, dolphins and whales. The 35 studies included in the review took into account three aspects of mainly visual emotional laterality, namely: (a) visual asymmetries for positive/familiar vs. negative/novel stimuli; (b) lateral position preference in mother-offspring or other affiliative interactions; (c) lateral position preference in antagonistic interactions. In agreement with data obtained from human studies that have evaluated comprehension or expression of emotions at the facial or vocal level, these results suggest that a general but graded right-hemisphere prevalence in the processing of emotions can be found at the visual level in cognitively developed non-primate social mammals. Some methodological problems and some implications of these results for human psychopathology are briefly discussed.

Lumbar spinal stenosis and surgical decompression affect sleep quality and position in patients. A prospective cross-sectional cohort study

IntroductionIt is reasonable to assume that lumbar spinal stenosis (LSS) affects the cauda nerve roots also at night. Research questionDoes microsurgical decompression influence sleep quality and position? Materials and methodsA study nurse interviewed 140 patients scheduled for LSS decompression using the Pittsburgh Sleep Quality Index (PSQI), Spinal Stenosis Measure (SSM), Numeric Rating Scale (NRS) for back and leg pain, Douleur Neuropathique (DN4), and Charlson Comorbidity Index. Epidemiologic and MRI data were collected along with self-reported rankings of preferred sleep positions (prone, supine, side, and fetal). Follow-up interviews were conducted by telephone six and 18 months after discharge. Statistical analysis was performed using SSPS 24, with significance set at p < 0.05. Results132 patients (55% female, mean age 73 years) were evaluated. Preoperatively, 45 (34.1%) patients were classified as good sleepers (GS: PSQI ≤5, range 1–21 (worst)) and 87 (65.9%) as poor sleepers (PS: PSQI ≥6). Decompression surgery reversed the relationship between PS (31.8%) and GS (68.2%, recovered/improved). Protective fetal sleeping position was the most common (≥70%) before and after surgery for both PS and GS. Risk factors for PS included female sex (p = 0.03), obesity (p = 0.03), high NRS back pain score (p = 0.008), and high SSM symptom score (p = 0.004). MRI imaging did not differ between PS and GS. Discussion and conclusionLSS had a negative effect on sleep quality, whereas surgical decompression had a positive effect. The protective fetal sleeping position was the preferred position both before and after surgery.

A novel prediction model of the freckle defects for single-crystal superalloy blades

The freckle is a typical surface defect formed during the directional solidification of SC (single crystal) components of Ni-based superalloys. It generally appears as a long and narrow trail of equiaxed grains aligned roughly parallel to the direction of gravity, which breaks the integrity. Once appears, the freckle can never be avoided by further treatment. With the turbine blade requirements increasing, the state-of-the-art methods include adding more refractory elements into Ni-based SC superalloys, and the design of blades with a more complex geometric shape make the freckle defects grow easier at the special surface zones. This leads to a significant challenge in controlling grain defect formation in SC blades and vanes for freckles. The current consensus to freckle formation is described as the Rayleigh-Taylor instability (RTI) flow that occurred in the interdendritic zone. During solidification, the compositional segregation (CS) occurred as soon as the solid interface forwarding led to the density changes between the interdendritic melting phases and the residual liquids. For nickel-based superalloys, the enrichment of low-density solutes like Al, and Ti at the interdendritic zone will make the liquid lighter. However, the widely used Ra model can’t correctly match the freckle tendency of the components with complex shapes (called geometrical effects of freckles), especially for blades. Recent reports indicate that the freckles occur at the preferred positions in the casting. In this work, a novel model is designed to quantitatively discuss the geometrical effects on freckle formation and to combine existing Ra number models with solidification models to enable freckle predictions at a smaller scale. The proceeding of this work can make the design of complex blades easier.

DNA polymerase ε and δ variants drive mutagenesis in polypurine tracts in human tumors

Alterations in the exonuclease domain of DNA polymerase ε cause ultramutated cancers. These cancers accumulate AGA>ATA transversions; however, their genomic features beyond the trinucleotide motifs are obscure. We analyze the extended DNA context of ultramutation using whole-exome sequencing data from 524 endometrial and 395 colorectal tumors. We find that G>T transversions in POLE-mutant tumors predominantly affect sequences containing at least six consecutive purines, with a striking preference for certain positions within polypurine tracts. Using this signature, we develop a machine-learning classifier to identify tumors with hitherto unknown POLE drivers and validate two drivers, POLE-E978G and POLE-S461L, by functional assays in yeast. Unlike other pathogenic variants, the E978G substitution affects the polymerase domain of Pol ε. We further show that tumors with POLD1 drivers share the extended signature of POLE ultramutation. These findings expand the understanding of ultramutation mechanisms and highlight peculiar mutagenic properties of polypurine tracts in the human genome.

Deciphering the mechanism of γ-cyclodextrin's hydrophobic cavity hydration: an integrated experimental and theoretical study.

Cyclodextrins (CDs) are host systems with inherent capability for inclusion complex formation with various molecular entities, mostly hydrophobic substances. Host CDs are highly accommodative to water molecules as well and usually contain water in the native state. There is still an ongoing discussion on both the total number of water molecules and their preferred binding position inside the cavities of the CDs. To understand the hydration/dehydration properties of γ-CD (the largest of the three most abundant native CDs), the main experimental methods applied in this study were differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). By coupling these techniques with density functional theory (DFT) calculations we try to shed some light on the mechanism of the γ-CD hydration and to address some unanswered questions: (i) what are the preferable locations for water molecules in the macrocyclic cavity ("hot spots"); (ii) what are the major factors contributing to the stability of the water cluster in the CD interior; (iii) what type of interactions (i.e., water-water and/or water-CD walls) contribute to the stability of the water assemble; (iv) how does the mechanism of the γ-CD hydration compare with those of its α-CD and β-CD counterparts.

Advantages of combining Lunar Laser Ranging and Differential Lunar Laser Ranging

Context. Differential Lunar Laser Ranging (DLLR), which is planned to be conducted at Table Mountain Observatory (TMO) of Jet Propulsion Laboratory (JPL) in the future, is a novel technique for tracking to the Moon. This technique has the potential to determine the orientation, rotation, and interior of the Moon much more accurately if the expected high accuracy of about 30 μm can be achieved. Aims. We focus on the benefit for the related parameters when only DLLR data with a short time span are available in the beginning. Methods. A short DLLR time series is not enough to provide an accurate lunar orbit, which has a negative effect on parameter estimation. Fortunately, Lunar Laser Ranging (LLR) has been collecting data for a very long time span, which can be used to compensate this DLLR disadvantage. The combination of LLR data (over more than 50 yr) and simulated DLLR data over a relatively short time span (e.g., 5 or 10 yr) is used in different cases which include changing reflector baselines and extending data time span, along with adding more stations and “new” reflectors. Results. The results show that the estimated accuracies of the parameters related to the lunar orientation, rotation, and interior can be improved by about 5–100 times by simply adding 5-yr DLLR data in the combination. With LLR, further enhancing the parameter determination can be achieved by choosing appropriate reflector baselines. By investigating different scenarios of reflector baselines based on the present five reflectors on the Moon, we find that two crossing baselines with larger lengths offer the greatest advantage. A longer data time span is more helpful, rather than having more stations involved in the measurement within a shorter time span, assuming the amount of data in these two cases is the same. Furthermore, we evaluated the preferred position of an assumed new reflector.

Conformational states of NADH in water–alcohol solutions studied by molecular dynamics simulations

Redox reactions in living cells involving a coenzyme nicotinamide-adenine-dinucleotide (NAD) are stereospecific and depend on NAD conformation states and on the structure of enzyme binding sites. Therefore, information on NAD conformation states in various environments is important for understanding of the mechanisms of redox reactions. In this paper the structural dynamics of reduced nicotinamide-adenine-dinucleotide (NADH) in water–methanol and water–ethanol solutions was investigated by means of molecular dynamics simulations. The trajectory analysis revealed three stable conformation groups characterized by the distance RNA−AD between adenine and nicotinamide centers of mass: folded (RNA−AD< 5.5 Å), intermediate (5.5 Å <RNA−AD< 12 Å) and unfolded (RNA−AD> 12 Å). It was shown that conformation equilibrium shifted from the folded conformation group at low alcohol concentrations towards the intermediate conformation group at high alcohol concentrations, while the fractional concentration of unfolded conformation group remained almost constant. The nicotinamide and adenine rings were found to be almost parallel in folded conformations and perpendicular in intermediate conformations, while no preferable positions of the rings were found in unfolded conformations. The results obtained were used for the analysis of experimentally determined rotational diffusion times τrexp in NADH in water–methanol and water–ethanol mixtures. Comparison between the calculated and experimental τr values using the generalized Stokes–Einstein–Debye equation allowed for determination of the wettability coefficient C and effective molecular volume Vm as a function of alcohol concentration. The coefficient C was found to be always less than unity and have a minimum at 40% of alcohol which was more pronounced for ethanol than for methanol mixtures. This dependence was attributed to the influence of solution viscosity that has a maximum at 40% of alcohol. The effective molecular volume Vm was found to be practically constant at alcohol concentrations below 60% and rise dramatically at higher alcohol concentrations. This dependence was attributed to the solvation of NADH at high alcohol concentrations.

Don’t put a ring on it: Gender stereotypes in citizens’ preferences for executive positions

Scholarly investigations have greatly advanced our understanding of gender stereotypes as they pertain to leadership roles. However, an examination of citizens’ evaluations of the personal and political characteristics of ministers using an experimental design is still lacking. In this article, we aim to determine whether individuals exhibit discrimination against women occupying the position of finance minister (FM), which presents an opportunity to assess the impact of stereotypes within one of the most ‘masculine’ cabinet portfolios. We implement a conjoint analysis in Spain to isolate the influence of appointees’ attributes on their selection. The results suggest that women are preferred for this post. In contrast to established knowledge derived from legislative studies, being single benefits female ministers more than it does their male counterparts in obtaining the position of FM, as agentic attributes can hold more value in these positions.

Context, welfare sensitivity, and positional preferences among fisherfolks in a developing country

It is well established in the empirical literature that people care about relative status or positionality. Hence, any policy that makes someone better off imposes a negative externality on their peers. However, the effectiveness of public policy aimed at mitigating positional externality hinges on the drivers of relative concerns, which are individual and context-specific, requiring empirical analysis. This study investigates positional concerns of individuals in artisanal fishing communities in a developing country where the men go on fishing expeditions and the women process and sell the catch, and the specific role of welfare sensitivity in moderating relative concerns. The contexts are formulated as management policies relating to the specific gender roles in fishing. We found that compared to the women, the men were more positional, on average, and relative concerns are context-dependent for both genders. Next, the men had lower welfare sensitivity than the women. For both groups and in a specific context, being welfare-sensitive over a narrow (broader) income range correlates with a relatively higher (lower) degree of positionality.

The influence of ground potential and electric field based on relative position in three layers soil

The development of high-voltage direct current (HVDC) engineering worldwide has led to an increase in concern over ground potential and electric field pollution, making it crucial to choose a site for direct current (DC) grounding electrode carefully. Soil-layered structure and distance to grounding electrode are the two most crucial factors to consider. While the soil-layered structure throughout the wide area is most likely consistent, it is the distance that proves to be most effective method for improving the reasonable distribution of ground potential and electric field. Although the previous study found that the ground potential and electric field values are greater when the distance to the grounding electrode is shorter, this cannot be applied to a real project. By proposing the analysis approach of equivalent interfacial charge accumulating, we can extract the concept of relative position from the mono-distance ago and conduct a more comprehensive study of their distribution characteristics, surpassing the previous conclusion. According to the research findings, the ideal distribution can be accomplished by shifting the relative position, and as a result, a specific mathematic formula for determining the best relative position has been obtained. Moreover, it should be noted that soil-resistivity and soil-thickness have an impact on computational complexity. The study results were compared and verified using the CDEGS software for a practical HVDC project in China. In the real-world application of the WEICHENG grounding electrode project, we selected the site of the grounding electrode using the approach of relative position with the MOPSO method. The findings suggest that the preferred position for the grounding electrode is between 13 km and 24 km.

Left ventricular anterolateral site is the preferable left ventricular lead position for an upgrade to biventricular pacing

Abstract Background Cardiac resynchronization therapy (CRT) is a well-established treatment for symptomatic heart failure with electrical dyssynchrony. The LV lead position in patients with left bundle branch block is usually recommended at the LV posterolateral to the lateral site, which is the latest electrical activation site. In contrast, the preferable LV lead position in patients who plan to upgrade from conventional RV apical pacing to CRT remains unclear. Purpose This study aimed to identify the preferable LV lead position for upgrading to CRT from conventional RV apical pacing. Methods An electrophysiological study was performed on patients who underwent ablation for atrial fibrillation. The electrode catheters were positioned at the RV apex, LV anterolateral, and LV posterolateral sites via the coronary sinus branches. During RV apical pacing, the activation time from the RV apex to the LV anterolateral and posterolateral sites was measured, and the activation time ratio to QRS duration was calculated. Biventricular pacing from both the RV apex and LV anterolateral or LV posterolateral sites was performed, and the difference in QRS duration and LV dP/dt compared to only the RV apical pacing state was measured. Results We enrolled 37 patients who exhibited anterolateral and posterolateral LV coronary sinus branches. During RV apical pacing, the average activation time ratio to QRS duration was higher at the LV anterolateral site than at the LV posterolateral site (0.89±0.07 vs. 0.71±0.11, P &amp;lt;0.001). The shortening ratio of QRS duration during biventricular pacing compared to baseline RV apical pacing was greater at LV anterolateral site than at the LV posterolateral site (45.7±18.0% vs. 32.0±17.6%, P &amp;lt;0.001). The improvement ratio of LV dP/dt during biventricular pacing was also better from the LV anterolateral site than from the LV posterolateral site (12.7±8.9% vs. 3.7±8.2%, P &amp;lt;0.001). Conclusion LV lead position in patients who plan to upgrade to CRT from conventional RV apical pacing is preferably at the LV anterolateral site.

Placing the maxilla in the most aesthetic sagittal position: validation of several reference lines in relation to the forehead shape

The ideal sagittal position of the maxilla is highly subjective in orthognathic surgical treatment planning. There is no consensus on an analysis to predict the ideal sagittal position of the maxilla. The objective of this study was to determine the preferred maxillary position in relation to the forehead shape, in the Southern Chinese population. The maxilla position of eight patients was simulated based on Steiner’s analysis (SA), glabella vertical (GV), Andrews’ Element II (AE2), and the Barcelona reference (BR). The simulations were then used in an electronic survey, where respondents ranked the images for each patient from to 1–4 (most to least attractive). A total of 128 responses were collected from dental professionals and laypersons. The most preferred to the least preferred simulation was as follows (mean rank scores for the male and female patients in parenthesis): BR (males 2.06; females 1.98), GV (males 2.11; females 2.21), SA (males 2.59; females 2.40), and AE2 (males 3.24; females 3.41). There was no significant difference in the results according to the sex, age group, or profession of the respondents. The Barcelona reference and glabella vertical are useful in predicting the ideal maxillary position in patients with a flat forehead, and the Barcelona reference is the most preferred in patients with a rounded forehead.

Semiconducting Bilayer Borophene with High Carrier Mobility.

Borophene has attracted much interest due to its rich configurations and novel properties such as Dirac fermions and superconductivity. The recently emerged bilayer borophene mitigates the oxidation problem when exposed to air, yet most studies ignore the influence of charge transfer induced by metal substrates on structural stability. Here we identified 31 monolayer borophene polymorphs that are stabilized on Au(111), Ag(111), or Cu(111) substrates through first-principle calculations. Interestingly, two novel semiconducting bilayer borophene polymorphs with band gaps of 0.37 and 0.42 eV were screened by integrating these monolayers. The formation of interlayer bonding contributed by the delocalized electrons is responsible for the semiconductivity. The predicted highest electron mobility reaches 2.01 × 104 cm2V-1 s-1, implying the possibility as a semiconductor device with a low power consumption. Moreover, light was also systemically thrown on the factors that may affect the electronic properties of bilayer borophenes and the positional preference of interlayer bonds.

Development of one translator’s style: A corpus-based investigation of Allan Barr’s style of translating Yu Hua’s works

This paper examines the evolution of translator Allan Barr's style and methodology. Regarded as the primary English translator of Yu Hua's works for fifteen years, Barr's corpus is examined in order to catalogue the development of his translation style. This corpus consists of Yu Hua’s Huanghun li de Nanhai and Siyue Sanri Shijian and their translations Boy in the Twilight: Stories of Hidden China (2003) and The April 3rd Incident: Stories (2018). The mixed-methods approach was applied to analyze Barr's idiosyncrasies in translating Direct Speech (DS) presentations at different stages of his career using the revised S-type model. A quantitative analysis identified a translator’s changing preferences in translating DS. The subsequent qualitative analysis addressed the translation strategies of (Free) Direct Speech and Barr's preferred position of report clauses at different points in time. The results suggest that Barr's translation styles were more influenced by his assumptions and attitude towards the implicit target readers and then dominated his stylistic choices, leading him to be more loyal to the source text and the author in his later translation and more inclined to present the literary world of the source text with less interference and interpretation by the translator. The implications proposed that the development of the translator’s style may be due to the promotion of the author’s familiarity with the literary field of the target language, the influence of the norms of the source language in which the translator is immersed in translation practice, and his increasing knowledge of style.

Sleep quality and comfort in fully automated vehicles: A comparison of two seat configurations

As autonomous driving technology advances, the possibility of using vehicles as sleeping environments becomes increasingly relevant. To investigate the feasibility of this concept, a sleep study was conducted with twelve participants who were given a 4-h opportunity window to sleep in both reclined and flat seat configurations. The evaluation involved both objective measures, including polysomnographic (PSG) data analysis, and subjective measures through questionnaires, assessing sleep quality and comfort. While the sleep quantity results were comparable between the two sleeping positions, the reclined position showed a slight advantage in sleep quantity (TST and WASO). Interestingly, a trend highlighting a possible difference was found between the seat positions regarding non-rapid eye movement stage 3 (NREM 3). NREM 3 tended to be in a higher proportion of total sleep time in the flat seat position. Sleep onset latency (SOL) also showed a trend of a shorter latency by participants in the flat position. Additionally, most participants reported a preference for the flat position over the reclined position. These findings suggest that a flat seat configuration could offer a more comfortable and restful sleep environment for passengers in autonomous vehicles.

Towards the Application of Hearables for Near-Fall Detection

Abstract Introduction: Falls and gait disorders often result in hospitalization and immobilization. Near-falls may be one of the earliest signs of increased fall risk. In the literature, several sensor positions are used for fall detection, but few studies include the head as a sensor position. Hearables and hearing aids are increasingly equipped with inertial measurement units (IMUs) and are therefore of particular interest for measuring the risk of falling in everyday life. Methods: Therefore, we investigate the suitability of the ear as a sensor position for near-fall detection in comparison to the standard sensor positions. The motion data of one study participant (female, 63 years) was exemplary analyzed. The participant walked at her individually preferred gait speed on a perturbation treadmill while nine different perturbations (anterior-posterior, medio-lateral and pitch) were applied with a time interval of 20-30 seconds. We used seven IMUs during the measurement at the positions ear, sternum, lumbar, wrist (left/right), foot (left/right). Results: The absolute acceleration signals at the seven different positions show the periodicity of the normal gait before the perturbation. During and after the perturbation changes in the motion pattern can be seen, whereby the response to the perturbation occurs with a slight time lag. The Pearson correlations show that the sensor positions sternum, lumbar and ear correlate well with each other and thus show similar signal characteristics in the reaction to this perturbation. Conclusion: This provides evidence that the ear sensor position is at least comparable to the preferred sensor positions in the literature on the torso. However, these results were obtained under laboratory conditions. Further research is needed to investigate the sensor position at the ear in everyday life.