International Journal of Technology Management最新文献_第5页

Ergonomics Considerations in Air Traffic Conflict Detection and Resolution 空中交通冲突检测与解决的人机工程学考虑

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-06-28 DOI: 10.14716/ijtech.v14i4.5908

F. Trapsilawati, Fan Li, Liu Yisi

引用次数: 1

Assessing the Product–Service Systems Supply Chain Capabilities: Construct and Instrument Development 评估产品服务系统供应链能力:构建和工具开发

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-06-28 DOI: 10.14716/ijtech.v14i4.5581

Dian Retno Sari Dewi, Y. Hermanto, S. Pittayachawan, Elizabeth Tait

{"title":"Assessing the Product–Service Systems Supply Chain Capabilities: Construct and Instrument Development","authors":"Dian Retno Sari Dewi, Y. Hermanto, S. Pittayachawan, Elizabeth Tait","doi":"10.14716/ijtech.v14i4.5581","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5581","url":null,"abstract":". Product – service systems (PSS) has become a major subject of concern for many industries because of their benefits and the possibilities to reduce negative environmental impacts and address environmental sustainability concerns. Despite the benefits of PSS, little empirical research has been conducted to investigate the PSS supply chain (SC) capabilities constructs. This study offers original contributions to the valid and reliable construct and instrument development to measure the PSS SC capabilities. A systematic approach was employed to develop and validate an instrument for evaluating the PSS SC capabilities. This comprises specifying domains of constructs, generating a sample of items, conducting interrater agreement analysis, testing non-response bias, and assessing the instrument using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). The validity of the proposed model was tested using structural equation modeling based on a large-scale online survey from 447 participants working for motorcycle service partners. The result shows seven distinctive PSS SC capabilities constructs, namely knowledge assessment, partner development, co-evolving, reflexive control, re-conceptualization, innovative service delivery, and sustainable product – service capability. The development of the instrument contributes a validated tool for companies to measure their PSS SC capabilities.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82875103","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}

引用次数: 0

A Simple Technique for the Corrosion Inhibition of Underwater Cannonball from a Shipwreck 沉船水下炮弹的一种简单缓蚀技术

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-06-28 DOI: 10.14716/ijtech.v14i4.4240

R. Riyanto, M. Jazuli, I. Sahroni, M. M. Musawwa, Nahar Cahyandaru, E. Wahyuni

{"title":"A Simple Technique for the Corrosion Inhibition of Underwater Cannonball from a Shipwreck","authors":"R. Riyanto, M. Jazuli, I. Sahroni, M. M. Musawwa, Nahar Cahyandaru, E. Wahyuni","doi":"10.14716/ijtech.v14i4.4240","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.4240","url":null,"abstract":". This study aims to conserve the underwater cannonball before storing it in a museum. Removing the protective crust of iron artifacts without the correct and proper method can cause rapid corrosion. To prevent damage, artifacts must be conserved in the right solution. Conservation was conducted in four stages during this research project. The first stage is the identification of weathering, and the second stage is the analysis and characterization of the corroded surface using a microscope, XRD (X-ray diffraction), XRF (X-ray fluorescence), and SEM (scanning electron microscopy). The third stage is the passivation/deactivation process, achieved using sodium hydroxide, soapy water and kaffir lime water. The fourth stage is stabilizing/coating the iron cannonball underwater heritage materials as soon as possible using microcrystalline wax to prevent further corrosion. This stage should solve the conservation problems associated with the object so that the object can last for a long time. Dry and wet-activated corrosion was characterized by applying XRD to the obtained mineral akageneite. The akageneite minerals were actively corroded and contained high concentrations of Cl atoms revealing dry and wet activated corrosion of 66.60% and 64.96%, respectively. After being conserved with several steps and NaOH, soapy water and kaffir lime water, inactive corrosion was observed. Based on the results of the analysis performed with XRF, the cannonball does not contain Cl, and the Fe content is 98.99%. The conservation method used in this research is excellent and appropriate for conserving cultural heritage materials, including underwater iron cannonballs.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80521969","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}

引用次数: 0

Enhancement of Phycocyanin Extraction from Dry Spirulina platensis Powder by Freezing-Thawing Pre-treatment 冻融预处理强化干螺旋藻粉中藻蓝蛋白的提取

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-06-28 DOI: 10.14716/ijtech.v14i4.5169

E. Sulistiawati, R. Rochmadi, M. Hidayat, A. Budiman

{"title":"Enhancement of Phycocyanin Extraction from Dry Spirulina platensis Powder by Freezing-Thawing Pre-treatment","authors":"E. Sulistiawati, R. Rochmadi, M. Hidayat, A. Budiman","doi":"10.14716/ijtech.v14i4.5169","DOIUrl":"https://doi.org/10.14716/ijtech.v14i4.5169","url":null,"abstract":". Phycocyanin (PC) is a bioactive compound that can function as an antioxidant, anti-inflammatory, immunomodulatory, and anti-cancer agent. It can act as a potential material in preventing COVID-19 and curing those suffering from it. Spirulina platensis (SP) is one of the microalgae rich in proteins and PC. This study aimed to determine the optimum PC extraction from SP, using distilled water as solvent through freezing-thawing pre-treatment. The variables set in the investigation were water content in SP before freezing (24.7-84.9 % wet basis), soaking time (0.25, 1, 2, and 6 hours), raw materials’ storage period (1 -13 months), freezing time (1-141 days), and the (solvent/biomass) ratio (20-440 mL/g). Spirulina platensis powder was soaked, frozen, thawed, and extracted in batch operation. The residue was extracted with the same solvent. The PC concentration in the filtrate was determined by measuring its absorbance using a spectrophotometer at wavelengths 615 and 652 nm. The experiment gave the optimum yield at a water content of 81.9% (wet basis), soaking time of 6 hours, freezing time of 1 day, and a solvent-to-biomass ratio of 100 mL/g. The optimum storage period of the raw material was one month. The phycocyanin IC 50 value of 1.485 mg/L.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85459622","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}

引用次数: 2

An Analysis of End-of-Life Vehicle Management in Indonesia from the Perspectives of Regulation and Social Opinion 从法规和社会舆论的角度分析印尼的报废车辆管理

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-05-09 DOI: 10.14716/ijtech.v14i3.5639

Charli Sitinjak, R. Ismail, R. Fajar, E. Bantu, L. Shalahuddin, Siti Yubaidah, W. F. Simanullang, V. Šimić

{"title":"An Analysis of End-of-Life Vehicle Management in Indonesia from the Perspectives of Regulation and Social Opinion","authors":"Charli Sitinjak, R. Ismail, R. Fajar, E. Bantu, L. Shalahuddin, Siti Yubaidah, W. F. Simanullang, V. Šimić","doi":"10.14716/ijtech.v14i3.5639","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5639","url":null,"abstract":". The huge automotive industry in Indonesia has had a major impact on the environment and health caused by ELV. An ELV is a vehicle that has reached the end of life due to age or cannot be reused because of accidents and high repair costs. The absence of procedures and laws in Indonesia related to the driving of this vehicle resulted in the dismantling of ELV, and its management was carried out on an original and unstructured basis. As a result, emissions of gases and toxic substances are released into the environment. To reduce this problem, implementing ELV management must be done. Implementing this ELV policy requires the cooperation of all stakeholders (government, automotive industry, and the community). Therefore, this study aims to understand the laws related to ELV and its implementation in neighboring countries and explore public perceptions of ELV management in Indonesia. The study was divided into two phases. The first phase reviewed literature related to ELV laws, and the second was surveyed with questionnaires. The results obtained from this research show that public awareness and acceptance of the application of ELV are still very low. In addition, the regulations that have been applied to check the feasibility of vehicles are proven unable to cut down the number of old vehicles.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80528498","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}

引用次数: 1

Effect of Pressure on Salt Water Spray as Alternative Methods of Desalination Using Droplet Evaporation-Air Entrainment 液滴蒸发-空气夹带海水淡化替代方法——压力对盐水喷雾的影响

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-05-09 DOI: 10.14716/ijtech.v14i3.5153

Muhamad Agil Fadhel Kurnianto, R. Irwansyah, Leonardo Fabianto, Arya Armadani, Warjito Warjito

{"title":"Effect of Pressure on Salt Water Spray as Alternative Methods of Desalination Using Droplet Evaporation-Air Entrainment","authors":"Muhamad Agil Fadhel Kurnianto, R. Irwansyah, Leonardo Fabianto, Arya Armadani, Warjito Warjito","doi":"10.14716/ijtech.v14i3.5153","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5153","url":null,"abstract":". It is necessary to utilize desalination technology to clear the water available, including seawater, to meet the increasing need for clean water due to population growth. Several desalination methods, such as thermal methods, membranes, freezing g, and ion exchange, continue to be developed but have not overcome some deficiencies. Therefore, new alternative desalination methods with droplet atomization, which utilizes the air entrainment phenomena, are being developed. Research on non-dimensional fluid atomization is the basis for designing this method. The study used brine pumped through a nozzle with a small diameter to become mist or vapor. This study carried out variations of research parameters on the configuration of the experimental apparatus in the form of pressure, the diameter of the nozzle, and the number of nozzles. Quantitative data from experimental results obtained from measurement instruments and qualitative data in videos obtained using a camera are to be processed into quantitative data using image processing. The results showed that pressure affects the characteristics of a full cone-shaped water spray. It was found that the best spray system configuration with two nozzles with a diameter of 0.5 mm in a pressure of 9 bar.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80970894","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}

引用次数: 0

Thermal and Hydrodynamic Performance Analysis of a Shell and Tube Heat Exchanger Using the AHP Multicriteria Method 用AHP多准则法分析管壳式换热器的热力和流体动力性能

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-05-09 DOI: 10.14716/ijtech.v14i3.6000

Karol Yuliete Ravelo-Mendivelso, M. Villate-Fonseca, J. D. Hernández-Vásquez, Orlando Miguel Miranda-Samper, Pedro Jessid Pacheco-Torres, Manuel J. Campuzano

{"title":"Thermal and Hydrodynamic Performance Analysis of a Shell and Tube Heat Exchanger Using the AHP Multicriteria Method","authors":"Karol Yuliete Ravelo-Mendivelso, M. Villate-Fonseca, J. D. Hernández-Vásquez, Orlando Miguel Miranda-Samper, Pedro Jessid Pacheco-Torres, Manuel J. Campuzano","doi":"10.14716/ijtech.v14i3.6000","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.6000","url":null,"abstract":". The goal of this work is to identify the best alternatives that allow for improving the thermal efficiency of a shell and tube heat exchanger in real operating conditions. The main motivation for carrying out the research is based on the need identified, together with the oil, natural gas, and alternative energy industry, to analyze and learn about the main criteria that directly impact the thermal efficiency of a heat exchanger. The applied methodology was based on the AHP (Analytic Hierarchy Process) multicriteria method. Three relevant criteria were identified: Thermodynamic, Hydrodynamic, and Economic. Additionally, a complete analysis of 9 sub-criteria (i.e. energy and exergetic analysis of the process, analysis of the thermodynamic properties of the fluids; pressure drop, volumetric flow of hot and cold fluids; energy costs, maintenance, operation and geometry of the heat exchanger) allowed us to conclude that the best strategy to increase the thermal efficiency of a heat exchanger in real operating conditions consists of using innovative online cleaning prototypes that use abrasive spheres. This will allow the heat exchanger to be cleaned simultaneously with its operation, reducing downtime and maintenance times/costs.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89810478","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}

引用次数: 0

A Novel Lanthanum-based Solid Oxide Fuel Cell Electrolyte Composite with Enhanced Thermochemical Stability toward Perovskite Cathode 具有增强钙钛矿阴极热化学稳定性的新型镧基固体氧化物燃料电池电解质复合材料

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-05-09 DOI: 10.14716/ijtech.v14i3.5189

A. Noviyanti, Yoga Trianzar Malik, U. Pratomo, D. G. Syarif

引用次数: 0

Short-Term Wind Energy Resource Prediction Using Weather Research Forecasting Model for a Location in Indonesia 利用天气研究预报模型对印度尼西亚某地的短期风能资源进行预测

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-05-09 DOI: 10.14716/ijtech.v14i3.5803

D. G. Cendrawati, N. Hesty, B. Pranoto, A. Aminuddin, A. Kuncoro, A. Fudholi

引用次数: 1

Analysis of Bittern Recovery Facility Using Mixed-Integer Nonlinear Programming: Centralized, Decentralized, and Hybrid Scenarios 基于混合整数非线性规划的卤水回收设施分析:集中、分散和混合方案

IF 2.8 4区管理学

International Journal of Technology Management Pub Date : 2023-05-09 DOI: 10.14716/ijtech.v14i3.5437

E. Widodo, Furqon Sandiva Utomo Putra, D. Hartanto, N. Arvitrida, A. Bagastyo, I. Warmadewanthi, T. Soehartanto

引用次数: 0