检索结果-内蒙古大学图书馆

Review on cesium doping in perovskite active layer and transport layer towards high-efficiency and stability

AIP Conference Proceedings 2024年第1期3213卷

作者： William Harrison Winnetouw Akhmad Herman Yuwono Nofrijon Sofyan Donanta Dhaneswara Widodo Wahyu Purwanto Departement of Metallurgical and Materials Engineering Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia Interdisciplinary Engineering Education and Research Unit Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia Departement of Chemical Engineering Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia Energy System Engineering Study Program Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia

Perovskite material is considered as one of next-generation solar cells that will have good potential to replace the current silicon-based solar cells. However, several disadvantages still limit the application of this materials due to the unstable phase, crystal defects during fabrication, toxic, and susceptible to cell degradation upon humidity and ultraviolet exposure. Several methods and engineering works have been made to overcome those disadvantages including doping, a technique which induces element(s) or compound(s) that could obtain better performance. One of the promising elements is cesium (Cs) that can be doped as a cation, compound or additive which would alter the interface between the electron-selective layer and the strain of perovskite structure. By having this element, the improved higher efficiency and operation stability can be significantly expected. This review article summarizes the efforts have been carried out by researchers working on Cesium doping on the perovskite solar cell towards high efficiency and operational stability. In has been found up to present that the best Cesium cation doping was able to bring up the improvement of efficiency up to 23,71%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The effect of koh activator concentration upon the characteristics of biomass-derived water hyacinth process on lithium-ion capacitor 16th

The effect of koh activator concentration upon the character...

引用

16th International Conference on Quality in Research, QiR 2019

作者： Luthfi, Muhammad Paduraksa, Jagad Verdianto, Ariono Pambudi, Yoyok Dwi Setyo Priyono, Bambang Syahrial, Anne Zulfia Lee, Joong Kee Hudaya, Chairul Department of Electrical Engineering Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Energy System Engineering Study Program Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Department of Metallurgy and Materials Engineering Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Center for Nuclear Reactor Technology and Safety BATAN Puspiptek Area SerpongTangerang Selatan15310 Indonesia Hwarang-ro 14-gil 5 Seongbuk-gu Seoul02792 Korea Republic of

来源：评论

学校读者我要写书评

暂无评论

Intrusion Detection using Deep Neural Network Algorithm on the Internet of Things

Intrusion Detection using Deep Neural Network Algorithm on t...

引用

IEEE International Conference on Communication, Networks and Satellite (ComNetSat)

作者： Syariful Ikhwan Adi Wibowo Budi Warsito Doctoral Program of Information System School of Postgraduate Studies Diponegoro University Semarang Indonesia D3 Telecommunication Engineering Institut Teknologi Telkom Purwokerto Banyumas Indonesia Computer Science Informatics Department of Science and Mathematics Faculty Diponegoro University Semarang Indonesia Statistics Department of Science and Mathematics Faculty Diponegoro University Semarang Indonesia

ISBN: (数字)9781665460309

ISBN: (纸本)9781665460316

The increasing use of IoT devices on future networks is very helpful for humans in their lives. However, the increase in devices connected to IoT networks also increases the potential for attacks against those networks. Vulnerabilities in Internet of Things (IoT) networks can be exposed at any time. Artificial intelligence can be used to protect the IoT network by being able to detect attacks on the network so that they can be prevented. In this study, network detection was carried out using the Deep Neural Network (DNN) algorithm. The test was carried out using the UNSW Bot-IoT dataset with a comparison of training data of 75% of the overall data. The results obtained show the ability of the algorithm to detect attacks on average with 99.999% accuracy. The validation loss and training loss look very small. In this study, there is a validation loss that still occurs in overfitting, but the difference is very small.

关键词： Deep learning Training Satellites Neural networks Intrusion detection Training data Feature extraction

来源：评论

学校读者我要写书评

暂无评论

Evolution of Electronic and Magnetic Properties in Topological Semimetal SmSbxTe2-x

arXiv

引用

arXiv 2022年

作者： Pandey, Krishna Basnet, Rabindra Wang, Jian Da, Bo Hu, Jin Materials Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas FayettevilleAR72701 United States Department of Physics University of Arkansas FayettevilleAR72701 United States Department of Chemistry Wichita State University WichitaKS67260 United States Research and Services Division of Materials Data and Integrated System National Institute for Materials Science 1-1 Namiki Ibaraki Tsukuba305-0044 Japan

The ZrSiS-type materials have attracted intensive attention due to the existence of various topological fermions. The magnetic version of the ZrSiS-type materials, LnSbTe (Ln = lanthanides), is an ideal candidate to explore novel exotic states due to the interaction between magnetism and topology. In this work, we report the experimental study on structural, magnetic, thermodynamic, and electronic properties for SmSbxTe2-xwith various Sb content. The revealed evolutions of these properties with tuning the compositions would provide useful insights for the fundamental topological physics and the future applications. © 2022, CC BY.

关键词： Electronic properties

来源：评论

学校读者我要写书评

暂无评论

Experimental determination and modelling of a PV module with evaporative cooling for hybrid power generation and distilled water production

引用

AIP Conference Proceedings 2024年第1期3236卷

作者： Titiasak Chea Thoranis Deethayat Tanongkiat Kiatsiriroat Attakorn Asanakham Energy Engineering Program Faculty of Engineering and Graduate School Chiang Mai University 239 Huay Kaew Road Muang District Chiang Mai Thailand 50200 Thermal System Research Laboratory Department of Mechanical Engineering Faculty of Engineering Chiang Mai University 239 Huay Kaew Road Muang District Chiang Mai Thailand 50200

This research developed a model from experimental data for predicting electrical performance and rate of distilled water production using a photovoltaic (PV) module with evaporative cooling. The model required information of solar radiation incident upon the module, the ambient temperature, the module’s surface area, the mass flow rate and temperature of water entering the cooling pad as well as the nominal operating cell temperature (NOCT). Experiments were performed with a module having an area of 1.94 m2, attached with 5-mm thick cellulose-polypropylene at the rear surface. Moreover, water feed into the pad was controlled at a temperature of 26-28 ℃ and a fixed flow rate of 0.25 L/min to assure that the pad was fully wetted. The solar heat absorbed by the module could be used to generate water vapor from the pad, which was then condensed on a frame underneath. The experimental data showed that the NOCT was reduced to 43 ℃ from 48 ℃ for an unmodified unit. With evaporation and condensation of water vapor, the PV module could generate more electrical energy, and the unit could also produce distilled water at a mass rate that depended linearly on the difference between the PV module and ambient temperatures. The simulation indicated a strong correlation with the actual test results on both clear sky and cloudy days. Additionally, monthly and yearly performances were simulated in three cities, Chiang Mai with its tropical savanna climate, Sihanouk Ville with a tropical climate, and Ouargla with a tropical desert climate. In relation to solar radiation levels, the highest net annual electrical energy was observed in Ouargla, followed by Sihanouk Ville and Chiang Mai, 806.12, 691.59 and 676.20 kWh, respectively. Annual yields of distilled water were 523.44, 460.48, and 372.52 L/y for Sihanouk Ville, Chiang Mai and Ouargla, respectively.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Organizational indicators on startup software for implementing secure software development lifecycle (SSDL): A systematic literature review

引用

AIP Conference Proceedings 2023年第1期2683卷

作者： Doddy Ferdiansyah Rizal Isnanto Jatmiko E. Suseno Program of Information System Doctoral Diponegoro University Semarang Indonesia Departement of Informatics Engineering Pasundan University Bandung Indonesia Departement of Computer Engineering Diponegoro University Semarang Indonesia Departement of Physics Diponegoro University Semarang Indonesia

The development of companies called startups is a company that has a lot to do with the world of technology and information; even in Indonesia, it has become a new trend, including the rise of startups engaged in software development. Many software startups have started to emerge by developing innovative software products to increase economic value to increase job opportunities. However, not a few software products that have been produced have failed. One of the causes of product failure is organizational factors, where the organisation’s culture is still a very complex problem for software startups. The role of top-level management in software startups also affects the organization in supporting the success of the products produced. In this study, we conduct a review of the literature in the organizational area in implementing information security governance, focusing on its application to secure software development. Information security governance is part of an organisation’s overall governance where it protects the organisation’s existence. Thereby, the focus of this review is to explain governance associated with organizations with a standardized approach to information security governance and investigate the variables that influence top-level management structures on secure software development.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Emulating Neuromorphic and In-Memory Computing Utilizing Defect engineering in 2D-Layered WSeOx and WSe2 Thin Films by Plasma-Assisted Selenization Process

引用

Advanced Functional Materials 2023年第38期33卷

作者： Chaudhary, Mayur Yang, Tzu-Yi Chen, Chieh-Ting Lai, Po-Chien Hsu, Yu-Chieh Peng, Yu-Ren Kumar, Ashish Lee, Chih-Hao Chueh, Yu-Lun Department of Materials Science and Engineering National Tsing-Hua University Hsinchu30013 Taiwan International Intercollegiate Ph.D. Program National Tsing Hua University Hsinchu30013 Taiwan College of Semiconductor Research National Tsing-Hua University Hsinchu30013 Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan Department of Physics National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Engineering and System Science National Tsing Hua University Hsinchu30013 Taiwan

The neuromorphic and in-memory computing using memristors are promising for the building of the next generation computing systems. However, the diffusion dynamics of metal ions/atoms inside the switching medium impose variability in conducting filament (CF) formation, thus limiting their use in von-Neumann architecture. The precise modulation on the diffusion of metal ions/atoms and their reduction/oxidation probability holds promise to overcome the speed, size, and energy issues of present-day computers. Here, this study shows that the diffusion of metal ions can be modulated by defects inside the switching medium and confines metal filaments in a precise 1D channel. This filament confinement by the defect engineering leads to an anomalous switching mechanism with two interchangeable modes: unipolar threshold and bipolar modes. The variation between two modes can be modulated by controlling defects in the structures, leading to a uniform switching with low SET/RESET voltage variations of 17.3% and −17.6%, respectively. Moreover, the convolutional neural network is implemented to emulate synaptic plasticity and image recognition to achieve recognition accuracy of 87% due to a highly linear weight update, demonstrating its potential for in-memory computing. © 2023 Wiley-VCH GmbH.

关键词： Image recognition

来源：评论

学校读者我要写书评

暂无评论

Emergence of microplastics in the aquatic ecosystem and their potential effects on health risks: The insights into Vietnam

引用

Journal of Environmental Management 2023年 344卷 118499页

作者： Nguyen, Minh-Ky Lin, Chitsan Nguyen, Hoang-Lam Le, Van-Re KL, Priya Singh, Jagpreet Chang, Soon W. Um, Myoung-Jin Nguyen, D. Duc Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Faculty of Environment and Natural Resources Nong Lam University Ho Chi Minh City700000 Viet Nam Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Civil Engineering McGill University Montreal Canada Ho Chi Minh City700000 Viet Nam Department of Civil Engineering TKM College of Engineering Kollam691005 India Department of Chemistry University Centre for Research & Development Chandigarh University Punjab Mohali140413 India Department of Civil & Energy System Engineering Kyonggi University Suwon Korea Republic of Faculty of Environmental and Food Engineering Nguyen Tat Thanh University 300A Nguyen Tat Thanh District 4 Ho Chi Minh City755414 Viet Nam

The increase of microplastic contamination in Vietnam is a growing concern due to various domestic, agricultural, and industrial activities. The use of plastic mulch and sludge application in agricultural farmland, textile production, daily consumer items, cleaning agents, and health/personal care products contribute significantly to the increasing microplastic pollution in the aquatic ecosystem. The concentration of microplastics reported in surface water ranged from 0.35 to 519,000 items m−3, with fibers and fragments being the most prevalent shapes. Notably, the high concentration of microplastics was observed in lakes, canals, and megacities such as Ha Noi and Ho Chi Minh City, which poses potential health risks to the local community via drinking-water supply and food chains. As an emerging pollutant, MPs are the transport vectors for contaminants in environmental matrices that act as a carrier of hazardous pollutants, release toxic compounds, and evenly aggregate/accumulate in biota. Recent studies have reported the presence of microplastics in various marine organisms, including fish and shellfish, highlighting the risk of ingestion of these particles by humans and wildlife. Thus, it is imperative to monitor microplastic contamination in the ecosystem to provide helpful information for the government and local communities. Efforts should be taken to reduce microplastic pollution at the source to minimize potential effects on ecological and health safety. This review paper emphasizes the urgent need for further research on microplastic pollution in Vietnam and highlights potential solutions to mitigate this emerging environmental threat. Keyworks: single-use plastics;microplastics;ecosystems;plastic waste;health risk;ecological and health safety;pollution mitigation. © 2023 Elsevier Ltd

关键词： Microplastic

来源：评论

学校读者我要写书评

暂无评论

Effects of chain-chain interaction on the configuration of short-chain alkanethiol self-assembled monolayers on a metal surface

引用

Journal of Chemical Physics 2024年第21期160卷 214711-214711页

作者： Liao, Chia-Li Faizanuddin, Syed Mohammed Haruyama, Jun Liao, Wei-Ssu Wen, Yu-Chieh Department of Chemistry National Taiwan University Taipei 10617 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Department of Engineering and System Science National Tsing Hua University Hsinchu 300044 Taiwan Solid State Chemistry Laboratory Cluster for Pioneering Research RIKEN Wako 351-0198 Japan Center for Emerging Material and Advanced Devices National Taiwan University Taipei 10617 Taiwan

Surface-specific sum frequency generation vibrational spectroscopy is applied to study the molecular configuration of short-chain n-alkanethiol self-assembled monolayers (SAMs with n = 2-6) on the Au surface. For monolayers with n ≥ 3, the alkanethiols are upright-oriented, with the CH₃ tilt angle varying between ∼33° and ∼46° in clear even-odd dependency. The ethanethiol monolayer (n = 2) is, however, found to exhibit a distinct lying-down configuration with a larger methyl tilt angle (67°-79°) and a smaller CH₂ tilt angle (56°-68°). Such a unique configurational transition from n = 2 to n ≥ 3 discloses the steric effect owing to chain-chain interaction among neighboring molecules. Through density functional theory calculations, the transition is further confirmed to be energetically favorable for thiols on a defective reconstructed Au(111) surface but not on the pristine one. Our study highlights the roles of the chain-chain interaction and the substrate surface atomic structure when organizing SAMs, offering a strategic pathway for exploiting their applications. © 2024 Author(s).

关键词：

来源：评论

学校读者我要写书评

暂无评论

Direct insulator to relativistic quantum Hall transition in graphene

引用

Physical Review B 2023年第20期108卷 205304-205304页

作者： Ching-Chen Yeh Pin-Chi Liao Dinesh K. Patel Wei-Chen Lin Siang-Chi Wang Albert F. Rigosi Randolph E. Elmquist Chi-Te Liang Department of Physics National Taiwan University Taipei 106 Taiwan Physical Measurement Laboratory National Institute of Standards and Technology (NIST) Gaithersburg Maryland 20899 USA Physikalisch-Technische Bundesanstalt (PTB) Bundesallee 100 Braunschweig 38116 Germany Taiwan International Graduate Program Academia Sinica Taipei 115 Taiwan Department of Engineering and System Science National Tsing Hua University Hsinchu 300 Taiwan Center for Quantum Science and Engineering National Taiwan University Taipei 106 Taiwan Taiwan Consortium of Emergent Crystalline Materials (TCECM) Taipei 106 Taiwan

We present evidence of the direct insulator-quantum Hall transition in monolayer epitaxial graphene, a genuine two-dimensional (2D) system. We studied the transition from an insulating state to a quantum Hall state at a high Landau level filling factor ν=6>3 and the plateau-plateau transition from ν=6 to ν=2. Using scaling theory, the critical exponent κ was determined to be 0.41±0.02 for the direct insulator-quantum Hall transition. This closely aligns with κ=0.42±0.02 from the ν=6 to ν=2 quantum Hall plateau-plateau transition. These findings suggest that the two transitions may belong to the same universality class. While similar transitions have been explored in conventional two-dimensional charge systems, our study provides valuable insights into a truly 2D system, deepening our understanding of these transitions.

关键词： Electrical properties Fermions Landau levels Graphene Hall bar Resistivity measurements

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：