Intention Gap Research Articles

Sustainable Food: Reasons for the Attitude Behavioral Intention Gap among Consumers in Sustainable Consumption

Sustainable consumption is a popular trend today. The formal introduction of the term "sustainable consumption" began at the 1994 Oslo Symposium. Sustainable consumption basically refers to the use of natural, environmentally friendly, and recyclable green resources to serve society, protect the environment, improve quality of life, without affecting the lives and needs of future generations, while meeting the basic needs of humanity. The Chinese government is also actively promoting and deploying research and deployment on sustainable consumption. However, the research and practice process of sustainable consumption in China is not synchronized with developed countries. Compared to developed countries that started deploying and implementing the concept of sustainable consumption earlier, China's economic development stage is slightly behind developed countries, so the policy deployment and implementation of sustainable consumption in China was relatively late. The efforts towards sustainable development will benefit all of us. In the context of the development of sustainable consumption, the sustainability of food is a new industrial model of particular concern today. Sustainable food is cultivated and developed in ecological organic agriculture, and its continuous innovation and development help provide market opportunities for traditional agricultural farmers. The sustainability of food is committed to creating a resilient food system, achieving ecological species diversity and harmonious coexistence between humans and nature.

How Did Medieval Ecclesiastical Criminal Law Impact the Ideology of Contemporary European Criminal Law

This paper explores the correlation between medieval ecclesiastical criminal law and contemporary European criminal law, as well as how the former has influenced the ideology of the latter. This work initially presents the contextual background and rationale for the chosen topic, subsequently provides a comprehensive overview of existing research in this field, and subsequently advances three hypotheses in the main body of the paper: the transition from customary law to written law, the perpetuation of original sin theory, and the establishment of theoretical principles within criminal law. These hypotheses are then systematically examined to derive conclusive findings. Based on my research, it can conclude that all three hypotheses hold true. This investigation contributes to bridging an intentional gap overlooked by theoretical constructions and approaching an authentic understanding of history.

Map retrieval intention recognition based on relevance feedback and geographic semantic guidance: For better understanding user retrieval demands

Effective retrieval is essential for finding resources in demand handily amidst extensive data records in data warehouse. Mainstream map retrieval methods suffer from intention gap problem and are incapable to describe sophisticated user demands precisely due to the limits of low- and middle-level text or visual feature matching, resulting in unsatisfactory retrieval results. Such limitations are more marked when map retrieval demands were characterized with joint constraints of geographic concepts. To address this issue, we propose a map retrieval intention recognition method to perceive user demands with relevance feedback samples and geographic semantics guidance. Specifically, we construct a hierarchical intention expression model to describe retrieval goals and their multi-dimensional attribute constrains; incorporate geographic ontologies to provide semantic guidance and facilitate recognition; utilize the frequent itemset mining (FIM) algorithm Apriori to generate intention candidates from relevance feedback samples, and search for the optimal intention set by adopting the minimum description length (MDL) principle. The experiments verify the effectiveness of Apriori algorithm and MDL principle on intention recognition. The proposed method outperforms the FIM algorithm Gene Ontology (RuleGO) and the Decision Tree algorithm with Hierarchical Features (DTHF) with higher recognition accuracy and noise tolerance. Furthermore, through our sample augmentation strategy, the method yields promising recognition accuracy even when the feedback sample size is as low as ten, substantially reducing the feedback burden in human-computer interactions. We envision that the application of our method in spatial data infrastructures (SDIs), such as geoportals and catalogue services, could enhance the quality of service and user experience in geospatial data discovery.

Poisson Effect‐Assisted Replication Lithography for Rapid Fabrication of Three‐Dimensional Microstructures

Demands for micro‐ and nano‐fabrication techniques have been increasing over recent decades due to their foundational importance in fields such as electronics, sensors, displays, biotechnologies, and energy technologies. Still, the rapid and efficient fabrication of complex 3D microstructures has long been a challenge due to the inherent limitations of conventional imprint lithography and the slow fabrication speed of maskless lithography systems using femtosecond lasers. This study introduces a novel lithographic replication method for the rapid replication of intricate 3D microstructures with closed‐loops by leveraging the Poisson effect‐driven lateral deformation of soft molds. Specifically, the suggested technique employs an elastomeric soft mold, engraved with negative cavity parts of the target structure separated by intentional gaps. Lateral deformation of the material allows the separated cavities to assemble for replication of target microstructure and defectless release from the soft mold. In addition to the experimental demonstrations of the proposed method using well‐known materials like polydimethysliloxane (PDMS) for the soft mold and UV‐curable polyurethane acrylate (PUA) for replication, essential considerations such as material selection and master mold design are discussed. The presented method not only broadens the capabilities of imprint lithographic techniques but also holds promise for the large scale, continuous fabrication of complex 3D microstructures.

Immigration status and adolescents’ voting intention in European countries: The importance of immigrant integration policy context

This article investigates whether policy efforts to integrate immigrants into society can have interpretive effects and motivate adolescents of immigrant origin in European countries to engage in the host country’s political system. We find that countries with more inclusive integration policies tend to have smaller gaps in voting intention between adolescents of immigrant origin and those not of immigrant origin, holding constant an array of individual and family politically relevant resources. Specifically, differences across countries in the inclusiveness of education policies appear to be a strong predictor of the magnitude of voting intention gaps between first-generation and native adolescents. In the case of second-generation vs. native gaps in voting intention, the inclusiveness of citizenship acquisition policies emerges as a key predictor. In these times of strong polarization and anti-immigration discourse across Europe, our findings are particularly relevant for policymakers and researchers in their efforts to address what might be done to help promote the long-term political integration of immigrants and their descendants.

Polyethylene glycol has immunoprotective effects on sciatic allografts, but behavioral recovery and graft tolerance require neurorrhaphy and axonal fusion.

JOURNAL/nrgr/04.03/01300535-202504000-00033/figure1/v/2024-07-06T104127Z/r/image-tiff Behavioral recovery using (viable) peripheral nerve allografts to repair ablation-type (segmental-loss) peripheral nerve injuries is delayed or poor due to slow and inaccurate axonal regeneration. Furthermore, such peripheral nerve allografts undergo immunological rejection by the host immune system. In contrast, peripheral nerve injuries repaired by polyethylene glycol fusion of peripheral nerve allografts exhibit excellent behavioral recovery within weeks, reduced immune responses, and many axons do not undergo Wallerian degeneration. The relative contribution of neurorrhaphy and polyethylene glycol-fusion of axons versus the effects of polyethylene glycol per se was unknown prior to this study. We hypothesized that polyethylene glycol might have some immune-protective effects, but polyethylene glycol-fusion was necessary to prevent Wallerian degeneration and functional/behavioral recovery. We examined how polyethylene glycol solutions per se affect functional and behavioral recovery and peripheral nerve allograft morphological and immunological responses in the absence of polyethylene glycol-induced axonal fusion. Ablation-type sciatic nerve injuries in outbred Sprague-Dawley rats were repaired according to a modified protocol using the same solutions as polyethylene glycol-fused peripheral nerve allografts, but peripheral nerve allografts were loose-sutured (loose-sutured polyethylene glycol) with an intentional gap of 1-2 mm to prevent fusion by polyethylene glycol of peripheral nerve allograft axons with host axons. Similar to negative control peripheral nerve allografts not treated by polyethylene glycol and in contrast to polyethylene glycol-fused peripheral nerve allografts, animals with loose-sutured polyethylene glycol peripheral nerve allografts exhibited Wallerian degeneration for all axons and myelin degeneration by 7 days postoperatively and did not recover sciatic-mediated behavioral functions by 42 days postoperatively. Other morphological signs of rejection, such as collapsed Schwann cell basal lamina tubes, were absent in polyethylene glycol-fused peripheral nerve allografts but commonly observed in negative control and loose-sutured polyethylene glycol peripheral nerve allografts at 21 days postoperatively. Loose-sutured polyethylene glycol peripheral nerve allografts had more pro-inflammatory and less anti-inflammatory macrophages than negative control peripheral nerve allografts. While T cell counts were similarly high in loose-sutured-polyethylene glycol and negative control peripheral nerve allografts, loose-sutured polyethylene glycol peripheral nerve allografts expressed some cytokines/chemokines important for T cell activation at much lower levels at 14 days postoperatively. MHCI expression was elevated in loose-sutured polyethylene glycol peripheral nerve allografts, but MHCII expression was modestly lower compared to negative control at 21 days postoperatively. We conclude that, while polyethylene glycol per se reduces some immune responses of peripheral nerve allografts, successful polyethylene glycol-fusion repair of some axons is necessary to prevent Wallerian degeneration of those axons and immune rejection of peripheral nerve allografts, and produce recovery of sensory/motor functions and voluntary behaviors. Translation of polyethylene glycol-fusion technologies would produce a paradigm shift from the current clinical practice of waiting days to months to repair ablation peripheral nerve injuries.

Forcefully engaging rods into tulips with gap discrepancy leading to pedicle screw loosening—a biomechanical analysis using long porcine spine segments

BACKGROUND CONTEXTLong-segment pedicle screw instrumentation is widely used to treat complex spinal disorders. Rods are routinely precontoured to maximize assistance on the correcting side of the deformity, but there often exists a residual gap discrepancy between the precontoured rods and screw tulips. No previous research has investigated the diminished pullout strength of the most proximal or distal pedicle screw resulting from a mismatched rod in long-segment pedicle screw instrumentation. PURPOSEThe present study aimed to investigate the decreased pullout force of pedicle screws affected by the gap discrepancy when forcefully engaging a mismatched rod into a tulip in a normal-density porcine spine. STUDY DESIGNThe pedicle screw fixation strength under axial pullout force was compared among three different gap discrepancies between rods and tulips using long porcine spine segments. METHODSTwelve porcine lumbar vertebrae (L3–L6) were implanted with pedicle screws and rods. Screws on one side had no gap between the tulip and rod (0-mm group), while the most proximal screw on the other side had an intentional gap of 3 mm (3-mm group) or 6 mm (6-mm group). Three hours after forcefully engaging the rod into the tulips at room temperature, the set screws in all specimens were loosened, and each specimen was dissected into individual vertebrae for subsequent pullout testing. RESULTSThe control group exhibited significantly greater pullout strength (1987.68 ± 126.80 N) than the groups from different rod-tulip configurations (p<.05), with significantly greater strength in the 3-mm group (945.62 ± 97.43 N) than the 6-mm group (655.30 ± 194.49 N) (p<.05). Only 47.6% and 33.0% of the pullout strength was retained in the 3-mm and 6-mm groups, respectively, compared to the control group. CONCLUSIONSGap discrepancies between rods and tulips can significantly reduce pedicle screw pullout strength, with a correlation between decreased strength and increased gaps. Surgeons should avoid forcefully engaging mismatched rods and consider well-fitted contoured rods in spinal surgery to minimize the risk of screw loosening. CLINICAL SIGNIFICANCEThe gap discrepancy between rod and tulip significantly affected pullout strength, with greater gaps leading to reduced strength. Forcefully engaging mismatched rods into tulips in degenerative spinal surgery should be avoided to minimize the risk of early screw pullout.

Deconstructing the Language Poetry in Some Selected Poems of Charles Bernstein From a Derridaian Perspective

This paper investigates the language poetry and its practice in some poems of the American poet Charles Bernstein. The study will examine several poems for Bernstein, like "April" and "March" from Stigma, "Locks without Doors" from Dark City, "Slowed Reason" from Rough Trades, "Lift off", and "The next Available Place". It argues that the Derridaian perspective plays a prominent role in the way Bernstein visualizes meaning in his poetry. According to Jacques Derrida (1993), the divergence of indicative communication by making intentional gaps between expression and indication creates the signification to difference, deviation, and departure. The gaps for Derrida are gaps of space which become gaps of time and those of time become gaps of space, adding that the gaps of difference are in themselves gaps as difference. The gap itself works for the auto production and the auto-determination of meaning which will keep on travelling.&#x0D; The study will analyse the language of Bernstein in the above mentioned poems to prove that meaning emerges through interpretation and that even authors do not control the text interpretation, and that texts, like language itself, have no outside referents or transcendental signified.

Gaps between Supply and Utilization of Social Work Evidence in Mainland of China

Purpose: The comparison research involving two studies aimed to explore the gap between social work evidence production and utilization in Mainland of China. Methods: Study 1 was a scoping review to screen qualified publications in the Web of Science Core Collection. Study 2 conducted correlation analysis and an analysis of variance using the data from the China Social Work Longitudinal Study 2019. Results: In Study 1, 745 publications from 35 main social work journals represented the overall improving volume and quality of evidence in Mainland of China. Study 2 showed a low intention to use evidence among the Chinese Mainland social work practitioners, which could be influenced by working region, years of work, educational level, work position, professional level, awareness of evidence-based practice (EBP), and willingness to learn EBP. Conclusions: An education gap, an intention gap, a regional development gap, and a time lag were identified between social work evidence supply and utilization in Mainland of China. Well-established education and training, as well as practice-research networks may be the solutions to bridge these gaps.

PO-03-065 PULSED FIELD ABLATION IS MORE EFFECTIVE THAN RADIOFREQUENCY ABLATION FOR THE RETREATMENT OF CHRONIC ABLATION SUBSTRATE

There are known limitations of radiofrequency ablation (RFA) in extending and homogenizing prior ablation. The effect of pulsed field ablation (PFA) following prior RFA is not known. To evaluate the differential ability of PFA versus RFA to penetrate chronic RFA lesions. A two step in-vivo study was designed to simulate a retreatment scenario. Step I : Six Yorkshire swine underwent intentional ineffective RFA using IntellaNav StablePoint catheter in three sites: I.1) Right atrium: intercaval line with multiple intentional gaps, I.2) Left atrium: right superior and inferior common pulmonic veins with intentional gaps, and I.3) Left ventricle: discrete lesions. Step II: Following a survival period of ≈5 weeks animals were remapped. Chronic RFA was identified via voltage mapping. Next, animals were retreated as following: II.1) Right atrium: PFA over prior intercaval line using a focal PFA catheter (FARAPOINT), II.2) pulmonic vein isolation using a single shot PFA catheter (FARAWAVE), and II.3) Left ventricle: animals were randomized into two arms, PFA or RFA. In each arm, two types of sub-chronic lesions were performed: PFA and RFA on chronic RFA scar or PFA and RFA on healthy myocardium. PFA was applied with 4 applications of 2.0kV. RFA was applied with 30W, 60s or a local impedance drop >50Ω. After 2-5 day survival, atrial electrical block was assessed via electroanatomical mapping. All lesions were measured sub-gross for the extent of the chronic and sub-chronic zones. Right and left atria: Retreatment with focal PFA resulted in complete intercaval block (width: 16-28mm) and isolation of all targeted pulmonic veins, expanding and homogenizing the disparate chronic RFA lesions. Left ventricle: the mean depth for chronic RFA was 4.8±1.4mm. When RFA was performed on healthy substrate, the mean depth of the sub-chronic zone was 7.6±1.3mm, compared to 3.9±1.6mm when RFA was applied on chronic RFA scar (p<0.01). In contrast, the mean depth for sub-chronic PFA on healthy substrate was 7.0±1.6mm, similar to the sub-chronic PFA zone on chronic RFA (7.1±1.3mm; p=0.94) demonstrating that PFA has the ability to penetrate chronic RFA scar. PFA may be advantageous for ablation following prior RFA, producing lesions that, unlike RFA retreatment, are not significantly impeded by the presence of scar from the prior RFA.

Viewing advertisements in social networks: the attitude-intention inconsistency revisited

PurposeThis study provides a framework to explain the attitude–intention gap in viewing advertisements in social networks. Going beyond the literal and evaluative inconsistency issues in measuring factors with theory of planned behavior (TPB), the authors propose and test a theoretical framework with possible moderators to the relationship between the attitude and behavioral intention.Design/methodology/approachTwo surveys were conducted to test the theoretical framework, one with students and the other with working people in Hanoi, Vietnam. After testing measure reliabilities and validities, hypotheses were tested with regressions using SPSS.FindingsIn general, the attitude was still found to have a positive relationship with the behavioral intention. However, the attitude–intention gap still exists as trust in social network was found to moderate the relationship between the attitude and intention with the working people sample while trust in brands advertised facilitate the relationship with the student sample. Interestingly, involvement was not found to moderate the relationship.Practical implicationsSeveral practical implications can be recommended. In general, the marketing strategy for managers is still to develop positive attitude by consumers toward viewing advertisements. However, personalization strategy should be taken with care in advertisement in social network. Providing consumers with perceived privacy control may help enhance the advertisement effectiveness. Finally, building trusts, on or off the social network, should be optimized to increase the users' intention to view advertisements in social network.Originality/valueThis research offers a new explanation for the attitude–intention inconsistency in general and for viewing advertisements in social networks in particular. Going beyond the measurement issues, the research suggests looking at the process under that the attitude can be formed and activated to impact on the intention. Moreover, mixed findings from two comparable samples provide nuanced insights for different groups of consumers.Peer reviewThe peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-10-2021-0563.

The predictive value of tissue response viewer for lesion transmurality in a porcine model

BackgroundThe tissue response viewer (TRV) is a multiparametric index that incorporates time, power, tissue pressure, impedance, and wall thickness data during radiofrequency catheter ablation (RFCA) and is used to predict the transmurality of lesions. This study aimed to evaluate the feasibility and accuracy of the TRV in a porcine model. MethodsTwelve pigs underwent preablation high-density voltage and activation mapping of two atria, and both were repeated after linear RFCA. Intentional gaps were kept in the left atrium (LA) and were touched up in the right atrium (RA). Standard and high powers were, respectively, performed in the LA ablation. Six pigs were immediately sacrificed for pathological examination after the mapping and ablation procedure (acute study). Another six pigs were kept for 4 weeks before remapping and pathological examination (chronic study). ResultsAll animals completed the planned procedure. The TRV function showed a sensitivity of 97.1% and a specificity of 76.9% in the acute study, and a sensitivity of 95.9% and a specificity of 72.5% in the chronic study to predict the transmural lesion. All positive and negative predictive values were over 80%. In addition, the TRV achieved higher sensitivity (92.3% vs. 85.0%) and specificity (88.2% vs. 78.9%) to predict the transmural lesion in LA ablation with high power compared with standard ablation. ConclusionsThis study presents the histopathological validation of TRV to predict transmural lesions. The use of TRV may guide a more individual ablation and a more precise touch-up of gaps for atrial arrhythmias.

Atrial Endocardial Unipolar Voltage Mapping for Detection of Viable Intramural Myocardium: A Proof-of-Concept Study

Endocardial bipolar voltage amplitude is largely derived from endocardial and subendocardial wall layers. This may result in situations of low bipolar voltage amplitude despite the presence of mid-myocardial including epicardial (ie, intramural-epicardial) viable myocardium. This study examined the utility of endocardial unipolar voltage mapping for detection of viable intramural-epicardial atrial myocardium. In 15 swine, an atrial intercaval ablation line with an intentional gap was created. Animals survived for 6 to 8 weeks before electroanatomical mapping followed by sacrifice. Gaps were determined by the presence of electrical conduction and classified based on the histopathologiclly layer(s) of viable myocardium into the following: (1) transmural, (2) endocardial, and (3) intramural-epicardial. Voltage data from healthy, scar, and gap points were exported into excel. The sensitivity and specificity of bipolar and unipolar voltage amplitude to detect intramural-epicardial gaps were compared using receiver operating characteristic analysis. In 9 of 15 (60%) swine, a focal ablation gap was detected in the intercaval line, while in the remainder 6 of 15 (40%), the line was complete without gaps. Gaps were classified into transmural (n=3), endocardial (n=3), or intramural-epicardial (n=3). Intramural-epicardial gaps were characterized by very low bipolar voltage amplitude that was similar to areas with transmural scar (P=0.91). In comparison, unipolar voltage amplitude in intramural-epicardial gaps was significantly higher compared to transmural scar (P<0.001). Unipolar voltage amplitude had higher sensitivity (93% versus 14%, respectively) and similar specificity (95% versus 98%, respectively) to bipolar voltage for detection of intramural-epicardial gaps. Atrial unipolar voltage mapping may be a useful technique for identifying viable intramural-epicardial myocardium in patients with endocardial scar.

Can environmental responsibility bridge the intention-behavior gap? Conditional process model based on valence theory and the theory of planned behavior

Proper disposal of recyclables is an important way to realize sustainable development. As such, the packaging used to ship parcels has become a research hotspot in recent years. However, there is an absence of research on perceived behavior control as the antecedent variable. There is a need to explore how to more effectively transform behavioral intentions into actual behavior. Based on valence theory and the theory of planned behavior, and using a conditional process model, this study found that perceived behavioral risk and perceived behavioral interest can significantly impact recycling behavior through behavioral intentions to recycle. After boundary conditions are added, “high environmental responsibility” can further bridge the gap between intention and behavior. Perceived behavioral risk is conditionally mediated by environmental responsibility. As a negative antecedent variable, recycling behavior is negatively moderated by “low environmental responsibility”. Compared with perceived behavioral interest, “high environmental responsibility” confers a stronger bridging advantage in the path when perceived behavioral risk is an independent variable. Therefore, the perceived behavioral risk is of relative importance. In addition, as a high-demand behavior, interpersonal facilitation behavior has a greater intention gap than habitual adjustment behavior. This study not only analyzes the two sides of perceived behavior control but also provides theoretical and practical insights from a cognitive perspective to bridge the intention gap.

Understanding the determinants of consumers' reverse exchange intention as an approach to e-waste recycling: a developing country perspective

PurposeEnd-of-life electronic products exchange (EEPE) program could be an effective approach to e-waste recycling that requires consumers' participation. Thus, it is highly recommended to study factors stirring consumer behavior with regard to EEPE programs, which is largely under-explored in the existing literature. Hence, grounding on the Theory of Planned Behavior (TPB) and Attitude-Behavior-Context (A-B-C) model, this study attempts to understand the determinants of consumers' EEPE intention by adding contextual and non-cognitive factors to the proposed research model.Design/methodology/approachEmploying a purposive sampling technique, respondents were drawn from university students and general consumers of electronic products in a developing country. Factor analysis, structural equation modeling (SEM) and SPSS PROCESS were used to analyze the collected data.FindingsEmpirical results confirm that subjective norm has the strongest positive impact on EEPE intention. Following this, attitude toward EEPE and perceived behavioral control play positive mediating roles in determining EEPE intention. Moreover, government initiatives moderate the unsolicited “attitude–intention gap”.Practical implicationsDrawing on this study's outcomes, the study urges to form comprehensive awareness-building campaigns, rules and regulations regarding proper e-waste management, promote “exchange offer” programs and educational programs to encourage EEPE.Originality/valueThis study makes two fresh contributions to the extant literature. First, by coupling the TPB and A-B-C theory, this study showed that both attitude (i.e. attitude toward EEPE) and context (i.e. government initiatives) are essential in eliciting individual-level post-consumption pro-environmental behavior (PEB) (i.e. EEPE). Second, government initiatives elucidate the attitude–intention gap in the reverse logistics context, especially in developing countries.

Cross-Modal Manifold Propagation for Image Recommendation

The growing complex user intention gap and information overload are obstacles for users to access the desired content. User interactions and the involved content indicate rich evidence of users’ interests. It is required to investigate interaction characters over user interest and information distribution, and this alleviates information overload for personalized recommendation. Therefore, this work explores user interests with interactions and visual information from users’ historical records for image recommendation. This paper introduces cross-modal manifold propagation (CMP) for personalized image recommendation. CMP investigates the trend of user preferences by propagating users’ historical records along with users’ interest distribution, which produces personalized interest-aware image candidates according to user interests. CMP simultaneously leverages visual distribution to spread users’ visual records relying on the dense semantic visual manifold. Visual manifold propagation estimates detailed semantic-level user-image correlations for ranking candidate images in recommendations. In the proposed CMP, both user interest manifold and images’ visual manifold compensate each other in propagating users’ records to predict users’ interaction. Experimental results illustrate the effectiveness of collaborative user-image propagation of CMP for personalized image recommendation. Performance improved by more than 20% compared to that of existing baselines.

Perceptual deterrents of the green consumer

PurposeThe purpose of this study is to better understand consumers’ overall perceptions of “being green” in an attempt to address the green attitude–behavior gap.Design/methodology/approachThis study features a qualitative study that uses a projective technique to tap into consumers’ underlying perceptions of those who purchase green products. A follow-up, quantitative study tests the mediation effects of perceived judgment and self-congruity perceptions on the green attitude–behavior gap.FindingsThe key finding of the first study suggests that consumers tend to “judge” others based on their degree of greenness. The second study confirmed both perceptions of judgment and self-congruity mediate the relationship between green attitudes and behaviors.Originality/valueThis study explores the elusive green attitude–intention gap with both a qualitative and quantitative approach. Perceived consumer judgment emerges as a new variable to consider in better understanding green consumer behaviors.

B-PO03-087 ATRIAL UNIPOLAR VOLTAGE MAPPING FOR DETECTION OF INTRAMURAL ABLATION GAPS

Endocardial bipolar voltage is primarily influenced by superficial muscle layers. Thus, endocardial scar with surviving intramural/epicardial layers may exhibit low bipolar voltage. Alternatively, intramural/epicardial scar with preserved endocardium may exhibit normal voltage. To examine the value of unipolar voltage for assessing atrial tissue. In a chronic swine model of transcaval ablation line with intentional gap (7.9-14.8mm), the RA was mapped after a survival period of 6 weeks using a multielectrode catheter (Pentaray, Biosense Webster). Unipolar and bipolar voltage maps were compared with histopathology. In 10 swine, the transcaval ablation line was transmural in 4 and non-transmural in 6. Four gaps exhibited endocardial scar with preserved mid-myocardial and epicardial layers; 1 gap showed preserved endocardium with mid-myocardial scar, and 1 gap showed a fully preserved atrial wall. Bipolar voltage (using a 0.50mV cutoff) performed well for detecting all endocardial gaps (0.64mV, IQR: 0.36-1.52, PPV=100%) but failed to detect intramural gaps (0.28mV, IQR:0.13-0.52, p=0.004; PPV=0%;). Lowering the bipolar voltage cutoff to 0.2mV did not significantly improve its sensitivity to detect intramural gaps (PPV=25%). In contrast, unipolar voltage was higher in sites of intramural gaps (1.37mV, IQR:1.12-1.93) compared to regions of transmural scar (0.74mV, IQR:0.58-0.94, p<0.001; PPV=100%) without false positive gap detection (NPV=100%); Figure. Unipolar voltage mapping may be useful for detecting intramural surviving muscle. The clinical utility and specific cutoff values require further investigation.

Propagation Vectors Facilitate Differentiation Between Conduction Block, Slow Conduction, and Wavefront Collision.

[Figure: see text].

Exploring the determinants of students' academic performance at university level: The mediating role of internet usage continuance intention.

This study investigates the impact of integrating essential factors on academic performance in university students’ context. The proposed model examines the influence of continuance intention, satisfaction, information value, and Internet addiction on academic performance. Additionally, it investigates the mediating role of continuance intention on the relationship of satisfaction and information value on academic performance among university students. A survey questionnaire method was adopted to collect data from university students in Jordan. Data was collected from 476 voluntary participants, and the analysis was conducted using SPSS and AMOS. The analysis results show that continuance intention, satisfaction, information value have a significant positive influence on academic performance. Besides, the results show that satisfaction and information value positively and significantly influence continuance intention. While continuance intention full mediation the relationship between satisfaction and academic performance, it partial mediation the relationship between information value and academic performance. This study is the first to examine the integrating of continuance intention, satisfaction, information value, and Internet addiction on students’ academic performance. Furthermore, this study is also distinguished from other studies by investigating the mediating role of continuance intention gap.