Pub Date : 2023-07-25DOI: 10.14716/ijtech.v14i5.5907
N. Z. Zahari, P. M. Tuah, Nur Hazwani Che Zulkifli, F. Cleophas
{"title":"Composting of Oil Palm Empty Fruit Bunches by Microbial Inoculant","authors":"N. Z. Zahari, P. M. Tuah, Nur Hazwani Che Zulkifli, F. Cleophas","doi":"10.14716/ijtech.v14i5.5907","DOIUrl":"https://doi.org/10.14716/ijtech.v14i5.5907","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"57 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79681826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-25DOI: 10.14716/ijtech.v14i5.5970
D. Suescún-Díaz, G. Ule-Duque, J. A. Chala-Casanova
{"title":"Nuclear Reactivity Calculation with Reduction of Fluctuations","authors":"D. Suescún-Díaz, G. Ule-Duque, J. A. Chala-Casanova","doi":"10.14716/ijtech.v14i5.5970","DOIUrl":"https://doi.org/10.14716/ijtech.v14i5.5970","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"42 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90385764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.5234
Astri Maria Kurniawati, N. Sutisna, H. Zakaria, Y. Nagao, T. Mengko, H. Ochi
. This paper presents a high throughput and low latency wireless with efficient bandwidth transmission, particularly for Medical Internet of Things (MIoT) applications. The proposed method is obtained by employing shorter OFDM (Orthogonal Frequency Divison Multiplexing) symbol duration which corresponds to shorter packet transmission. This can be realized by reducing subcarrier spacing and allowing to use of a smaller number of sample data in the time domain while maintaining sampling rate frequency. Furthermore, the proposed scheme can transmit more data frames twice within the original time slot duration, hence, it can enhance the throughput without expanding the bandwidth utilization. The evaluation results of 20 MHz and 40 MHz bandwidth cases show throughput improvement by around 2.3 and 2.6 times compared to the conventional ones. In addition, the proposed scheme also provides low latency transmission by reducing the transmission time by around 50%. The corresponding hardware implementation is also provided with low-complexity hardware resources. Hence, the proposed system can be used for IoT systems with main considerations on low latency, high throughput, bandwidth efficiency, and low power consumption.
{"title":"High Throughput and Low Latency Wireless Communication System using Bandwidth-Efficient Transmission for Medical Internet of Thing","authors":"Astri Maria Kurniawati, N. Sutisna, H. Zakaria, Y. Nagao, T. Mengko, H. Ochi","doi":"10.14716/ijtech.v14i4.5234","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5234","url":null,"abstract":". This paper presents a high throughput and low latency wireless with efficient bandwidth transmission, particularly for Medical Internet of Things (MIoT) applications. The proposed method is obtained by employing shorter OFDM (Orthogonal Frequency Divison Multiplexing) symbol duration which corresponds to shorter packet transmission. This can be realized by reducing subcarrier spacing and allowing to use of a smaller number of sample data in the time domain while maintaining sampling rate frequency. Furthermore, the proposed scheme can transmit more data frames twice within the original time slot duration, hence, it can enhance the throughput without expanding the bandwidth utilization. The evaluation results of 20 MHz and 40 MHz bandwidth cases show throughput improvement by around 2.3 and 2.6 times compared to the conventional ones. In addition, the proposed scheme also provides low latency transmission by reducing the transmission time by around 50%. The corresponding hardware implementation is also provided with low-complexity hardware resources. Hence, the proposed system can be used for IoT systems with main considerations on low latency, high throughput, bandwidth efficiency, and low power consumption.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"52 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72510704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.5240
Y. Yulianto, A. P. A. Mustari
. Reactor safety is one of the essential parts of reactor research, especially to appropriately respond when melts down occurred during a severe accident. In this study, the relocation process of Al, Fe, and Pb was simulated by using the Moving Particle Semi-Implicit method to study the relocation mechanism of the liquids when they experienced an interaction between liquids at high temperatures. It is obtained that, to reach the stratified condition, Pb-Al needs 0.63 seconds, Al-Fe and Al-Pb need 1.14 seconds, and Fe-Al needs more than three seconds. Overall, the results indicate that the difference in viscosity and density between two liquids influences the time to reach the stratified condition. The greater the density difference between two liquids, the faster the stratification process.
{"title":"Numerical Study on Relocation Process of Al, Fe, and Pb by Using the Moving Particle Semi-Implicit Method During Severe Accident of Reactor","authors":"Y. Yulianto, A. P. A. Mustari","doi":"10.14716/ijtech.v14i4.5240","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5240","url":null,"abstract":". Reactor safety is one of the essential parts of reactor research, especially to appropriately respond when melts down occurred during a severe accident. In this study, the relocation process of Al, Fe, and Pb was simulated by using the Moving Particle Semi-Implicit method to study the relocation mechanism of the liquids when they experienced an interaction between liquids at high temperatures. It is obtained that, to reach the stratified condition, Pb-Al needs 0.63 seconds, Al-Fe and Al-Pb need 1.14 seconds, and Fe-Al needs more than three seconds. Overall, the results indicate that the difference in viscosity and density between two liquids influences the time to reach the stratified condition. The greater the density difference between two liquids, the faster the stratification process.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"73 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78791467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.5785
M. Thi, Nguyen Le Thai, T. Bui, S. Ho
. We created a green phosphor Ca 14-x Eu x Mg 2 [SiO 4 ] 8 or CMS:Eu 2+ to be utilized in WLED devices. The phosphor offers a wide spectrum achieving the highest value of 505 nm when excited at 400 nm, as a result of a shift between the excited state of 4 f 6 5 d and the ground state of 4 f 7 in an ion of Eu 2+ . The interactivity of dipole-dipole appeared to be a primary power shift for the electrical multipolar nature of the phosphor. We acquired a critical distance measured at 12.9 Å as well as 14.9 Å via a critical Eu 2+ concentration as well as the Dexter hypothesis on power shift. Via an encapsulant, we combined CMS:Eu 2+ as well as a phosphor in red with a LED device having a λ max value of 395 nm and managed to acquire white illumination having a CRI value measured at 91 at a 20-milliampere forward bias current. In addition, we also examined the layout as well as the light features in CMS:Eu 2+ .
． 我们创造了一种绿色荧光粉Ca 14-x Eu x Mg 2 [sio4] 8或CMS:Eu 2+，用于WLED器件。由于在eu2 +离子中激发态4f65d和基态4f7之间的转换，该荧光粉在400nm激发时提供了宽光谱，达到了505 nm的最高值。偶极子-偶极子的相互作用似乎是荧光粉电多极性质的主要功率转移。通过临界Eu 2+浓度以及关于功率转移的Dexter假设，我们获得了在12.9 Å和14.9 Å测量的临界距离。通过封装剂，我们将CMS: eu2 +和红色荧光粉与λ最大值为395 nm的LED器件结合在一起，并在20毫安的正向偏置电流下获得了CRI值为91的白色照明。此外，我们还研究了CMS:Eu 2+的布局和光特性。
{"title":"The Light Features and Bredigite Layout for Orthosilicate Phosphor in WLED Devices","authors":"M. Thi, Nguyen Le Thai, T. Bui, S. Ho","doi":"10.14716/ijtech.v14i4.5785","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5785","url":null,"abstract":". We created a green phosphor Ca 14-x Eu x Mg 2 [SiO 4 ] 8 or CMS:Eu 2+ to be utilized in WLED devices. The phosphor offers a wide spectrum achieving the highest value of 505 nm when excited at 400 nm, as a result of a shift between the excited state of 4 f 6 5 d and the ground state of 4 f 7 in an ion of Eu 2+ . The interactivity of dipole-dipole appeared to be a primary power shift for the electrical multipolar nature of the phosphor. We acquired a critical distance measured at 12.9 Å as well as 14.9 Å via a critical Eu 2+ concentration as well as the Dexter hypothesis on power shift. Via an encapsulant, we combined CMS:Eu 2+ as well as a phosphor in red with a LED device having a λ max value of 395 nm and managed to acquire white illumination having a CRI value measured at 91 at a 20-milliampere forward bias current. In addition, we also examined the layout as well as the light features in CMS:Eu 2+ .","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"3 2 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86555790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.6146
E. O. Ningrum, I. Khoiroh, Hanifah Inas Nastiti, Ryan Anindya Affan, A. D. Karisma, Elly Agustiani, A. Surono, H. Suroto, S. Suprapto, Lulu Sekar Taji, Sinung Widiyanto
. In the presented work, the formation of anodic oxide film on Ti-6Al-4V ELI (Extra Low Interstitial) alloy in 0.02 M trisodium phosphate (Na 3 PO 4 ) electrolyte solution using various voltages were investigated. The color produced by the anodizing, the intensity of TiO2 content, the thickness of the oxide layer, and the corrosion rate were examined. It was obtained that the color appearance of Ti-6Al-4V ELI could be changed easily by altering the applied voltages. The higher the voltage applied in the anodizing process, the thicker the titanium oxide layer formed. The corrosion resistance analysis in a Simulated Body Fluid revealed that the non-anodized specimen showed a higher corrosion rate compared to the anodized specimen. The increase of oxide layer thickness leads to a significant decrease in corrosion rate and consequently increases the corrosion resistance. In addition, the anodized sample achieved the highest corrosion resistance at 15 V.
{"title":"Surface Coating Effect on Corrosion Resistance of Titanium Alloy Bone Implants by Anodizing Method","authors":"E. O. Ningrum, I. Khoiroh, Hanifah Inas Nastiti, Ryan Anindya Affan, A. D. Karisma, Elly Agustiani, A. Surono, H. Suroto, S. Suprapto, Lulu Sekar Taji, Sinung Widiyanto","doi":"10.14716/ijtech.v14i4.6146","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.6146","url":null,"abstract":". In the presented work, the formation of anodic oxide film on Ti-6Al-4V ELI (Extra Low Interstitial) alloy in 0.02 M trisodium phosphate (Na 3 PO 4 ) electrolyte solution using various voltages were investigated. The color produced by the anodizing, the intensity of TiO2 content, the thickness of the oxide layer, and the corrosion rate were examined. It was obtained that the color appearance of Ti-6Al-4V ELI could be changed easily by altering the applied voltages. The higher the voltage applied in the anodizing process, the thicker the titanium oxide layer formed. The corrosion resistance analysis in a Simulated Body Fluid revealed that the non-anodized specimen showed a higher corrosion rate compared to the anodized specimen. The increase of oxide layer thickness leads to a significant decrease in corrosion rate and consequently increases the corrosion resistance. In addition, the anodized sample achieved the highest corrosion resistance at 15 V.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"48 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88808078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.5677
Mah'd Taleb, Y. Pheniqi
. Innovation performance is seen as the backbone of firm ’s sustained competitive advantages. Scholars of the dynamic capability view suggest that Intellectual Capital (IC), such as human, structural, and relational capital, are the main driving force of a firm’s Innovation P erformance (IP). The purpose of this study is to investigate the importance of developing firms’ intellectual capital and their role in leveling up innovation performance. In doing so, this paper conducts an examination by moderating the variable of Innovation Ambidexterity (IA), namely explorative and exploitative activities. By applying a quantitative and cross-sectional design, the study deploys data feedback from managers and executives of manufacturing SMEs across the Moroccan national territory collected from 286 surveys. The results show that IC has a positive and significant impact on IP, while IA has a positive and significant effect on both IP and IC. The study also finds that IA failed to moderate the relationship between IC and IP. This study contributes to advancing the capability theory by adding the importance of developing and reconfiguring firm ’ s human, structural, and relational capital as the main driving force of innovation performance.
{"title":"Does Innovation Ambidexterity Moderate the Relationship between Intellectual Capital and Innovation Performance? Evidence from Morocco \u0000","authors":"Mah'd Taleb, Y. Pheniqi","doi":"10.14716/ijtech.v14i4.5677","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5677","url":null,"abstract":". Innovation performance is seen as the backbone of firm ’s sustained competitive advantages. Scholars of the dynamic capability view suggest that Intellectual Capital (IC), such as human, structural, and relational capital, are the main driving force of a firm’s Innovation P erformance (IP). The purpose of this study is to investigate the importance of developing firms’ intellectual capital and their role in leveling up innovation performance. In doing so, this paper conducts an examination by moderating the variable of Innovation Ambidexterity (IA), namely explorative and exploitative activities. By applying a quantitative and cross-sectional design, the study deploys data feedback from managers and executives of manufacturing SMEs across the Moroccan national territory collected from 286 surveys. The results show that IC has a positive and significant impact on IP, while IA has a positive and significant effect on both IP and IC. The study also finds that IA failed to moderate the relationship between IC and IP. This study contributes to advancing the capability theory by adding the importance of developing and reconfiguring firm ’ s human, structural, and relational capital as the main driving force of innovation performance.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"33 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84435610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.5407
M. Albugami, Asma Zaheer
. With the increasing cases of COVID-19 and unexpected lockdowns, technology acceptance, especially internet-based online shopping becomes an important issue in today's business world. Since Information technology is pervasive and has enormous potential, therefore this study identifies antecedents of online shopping adoption by utilizing Unified theory and use of technology model and electronic service quality to observe the influence of these two variables on buyers' intention to adopt internet shopping. The data was collected from the customers using products of the Fast-moving Consumer goods (FMCG) industry. The data collection period was one month beginning in April 2021. The data was analysed using mainly two approaches confirmatory factor analysis and structural equation modelling using Lisrel 8.80. The findings of this study revealed that the integrated UTAUT model is highly significant and influences the buyer's intention to adopt internet shopping for their daily needs.
{"title":"Measuring E-Commerce Service Quality for the Adoption of Online Shopping during COVID-19: Applying Unified Theory and Use of Technology Model (UTAUT) Model Approach","authors":"M. Albugami, Asma Zaheer","doi":"10.14716/ijtech.v14i4.5407","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5407","url":null,"abstract":". With the increasing cases of COVID-19 and unexpected lockdowns, technology acceptance, especially internet-based online shopping becomes an important issue in today's business world. Since Information technology is pervasive and has enormous potential, therefore this study identifies antecedents of online shopping adoption by utilizing Unified theory and use of technology model and electronic service quality to observe the influence of these two variables on buyers' intention to adopt internet shopping. The data was collected from the customers using products of the Fast-moving Consumer goods (FMCG) industry. The data collection period was one month beginning in April 2021. The data was analysed using mainly two approaches confirmatory factor analysis and structural equation modelling using Lisrel 8.80. The findings of this study revealed that the integrated UTAUT model is highly significant and influences the buyer's intention to adopt internet shopping for their daily needs.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"37 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77676615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.14716/ijtech.v14i4.5678
B. G. Irianto, Anita Miftahul Maghfiroh, M. Sofie, A. Kholiq
. Factors causing premature infant mortality include the lack of simple care and inadequate equipment such as a baby incubator. Premature babies are very susceptible to heart disorders, including congenital heart defects. Congenital heart defects can cause a fetus to be born prematurely. The current research related to this matter was further conducted, aiming to develop a baby incubator with an overshoot reduction system specifically for babies with heart defects that can be monitored remotely using an IoT system. In this study, the AHT 10 sensor was used for room temperature sensing in the baby incubator. Temperature control was achieved using a closed-loop PID system. In this case, the monitoring of the baby's heart rate employed leads II to tap the heart's electrical signal. Data transmission consisted of temperature readings, ECG signals, and heart rate. The microdata was processed into digital data, which were then sent via the Raspberry Pi, then sent via the internet to access the cloud firebase. After that, the firebase data were downloaded from an Android system. The performance results showed that in the temperature test, the error value was below 5%, and the PID control made can reduce the overshoot temperature by no more than 5%. In addition, it was also determined that the steady-state error value was 2%. T-Test statistical test on the ECG signal further obtained a p-value > 0.05. Furthermore, the data transmission test using IoT did not find data loss when sending the data, and the minimum speed required for data transmission was 5 kbps. This research further implied that the user or the patient's family could easily monitor the baby's development anywhere and anytime.
{"title":"Baby Incubator with Overshoot Reduction System using PID Control Equipped with Heart Rate Monitoring Based on Internet of Things","authors":"B. G. Irianto, Anita Miftahul Maghfiroh, M. Sofie, A. Kholiq","doi":"10.14716/ijtech.v14i4.5678","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5678","url":null,"abstract":". Factors causing premature infant mortality include the lack of simple care and inadequate equipment such as a baby incubator. Premature babies are very susceptible to heart disorders, including congenital heart defects. Congenital heart defects can cause a fetus to be born prematurely. The current research related to this matter was further conducted, aiming to develop a baby incubator with an overshoot reduction system specifically for babies with heart defects that can be monitored remotely using an IoT system. In this study, the AHT 10 sensor was used for room temperature sensing in the baby incubator. Temperature control was achieved using a closed-loop PID system. In this case, the monitoring of the baby's heart rate employed leads II to tap the heart's electrical signal. Data transmission consisted of temperature readings, ECG signals, and heart rate. The microdata was processed into digital data, which were then sent via the Raspberry Pi, then sent via the internet to access the cloud firebase. After that, the firebase data were downloaded from an Android system. The performance results showed that in the temperature test, the error value was below 5%, and the PID control made can reduce the overshoot temperature by no more than 5%. In addition, it was also determined that the steady-state error value was 2%. T-Test statistical test on the ECG signal further obtained a p-value > 0.05. Furthermore, the data transmission test using IoT did not find data loss when sending the data, and the minimum speed required for data transmission was 5 kbps. This research further implied that the user or the patient's family could easily monitor the baby's development anywhere and anytime.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"38 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85217458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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