textile industry

纺织工业
  • 文章类型: Journal Article
    通过利用从物联网(IoT)和企业资源计划(ERP)系统中的传感器获得的信息,可以提高纺织制造部门的织物质量预测,这些传感器与嵌入在纺织机械中的传感器相连。工业4.0概念的集成有助于利用物联网传感器数据,which,反过来,导致提高生产率和减少纺织制造过程中的交货时间。这项研究解决了纺织制造业中与织物质量有关的不平衡数据问题。它包括对七种开源自动机器学习(AutoML)技术的评估,即FLAML(快速轻量级AutoML),AutoViML(自动构建变体可解释ML模型),EvalML(评估机器学习),AutoGluon,H2OAutoML,PyCaret,和TPOT(基于树的管道优化工具)。通过采用在计算效率和预测准确性之间找到折衷的创新方法,为某些情况选择最合适的解决方案。结果表明,对于预定的目标函数,EvalML成为表现最好的AutoML模型,在平均绝对误差(MAE)方面尤其出色。另一方面,即使推理周期较长,AutoGluon在平均绝对百分比误差(MAPE)、均方根误差(RMSE),和r平方。此外,这项研究探讨了每个AutoML模型提供的特征重要性排名,阐明显著影响预测结果的属性。值得注意的是,发现sin/cos编码在表征具有大量唯一值的分类变量方面特别有效。本研究包括有关AutoML在纺织工业中应用的有用信息,并提供了采用工业4.0技术来增强织物质量预测的路线图。该研究强调了在预测准确性和计算效率之间取得平衡的重要性,强调特征重要性对模型可解释性的重要性,并为该领域的未来调查奠定基础。
    The enhancement of fabric quality prediction in the textile manufacturing sector is achieved by utilizing information derived from sensors within the Internet of Things (IoT) and Enterprise Resource Planning (ERP) systems linked to sensors embedded in textile machinery. The integration of Industry 4.0 concepts is instrumental in harnessing IoT sensor data, which, in turn, leads to improvements in productivity and reduced lead times in textile manufacturing processes. This study addresses the issue of imbalanced data pertaining to fabric quality within the textile manufacturing industry. It encompasses an evaluation of seven open-source automated machine learning (AutoML) technologies, namely FLAML (Fast Lightweight AutoML), AutoViML (Automatically Build Variant Interpretable ML models), EvalML (Evaluation Machine Learning), AutoGluon, H2OAutoML, PyCaret, and TPOT (Tree-based Pipeline Optimization Tool). The most suitable solutions are chosen for certain circumstances by employing an innovative approach that finds a compromise among computational efficiency and forecast accuracy. The results reveal that EvalML emerges as the top-performing AutoML model for a predetermined objective function, particularly excelling in terms of mean absolute error (MAE). On the other hand, even with longer inference periods, AutoGluon performs better than other methods in measures like mean absolute percentage error (MAPE), root mean squared error (RMSE), and r-squared. Additionally, the study explores the feature importance rankings provided by each AutoML model, shedding light on the attributes that significantly influence predictive outcomes. Notably, sin/cos encoding is found to be particularly effective in characterizing categorical variables with a large number of unique values. This study includes useful information about the application of AutoML in the textile industry and provides a roadmap for employing Industry 4.0 technologies to enhance fabric quality prediction. The research highlights the importance of striking a balance between predictive accuracy and computational efficiency, emphasizes the significance of feature importance for model interpretability, and lays the groundwork for future investigations in this field.
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  • 文章类型: Journal Article
    纺织服装行业高质量发展的关键在于增强技术创新,优化技术创新效率。本研究基于2013-2022年中国纺织服装行业60家A股上市公司的数据,采用三阶段DEA模型和Malmquist指数模型,从静态和动态两个角度测度技术创新效率的变化。此外,运用Tobit模型分析了管理和财务因素对技术创新效率的影响及其作用机制。结果表明:(1)与制造业及其子行业相比,2013-2022年间,纺织服装上市公司技术创新效率整体较低,且呈下降趋势;(2)这些上市公司的平均全要素生产率提高了1.7%,表现出“W”形波动,随着技术的进步,纯粹的技术效率,和规模效率均表现出微弱的改善;(3)管理和财务因素显著影响技术创新效率。具体来说,员工素质,盈利能力,和运营能力与技术创新效率正相关,具有长期有效性,虽然年龄坚定,管理费用,股权集中度,发展能力,和债务偿还能力与技术创新效率负相关;(4)不同类型的企业在管理因素的显著性,而同一个人是否同时担任两个管理职位会显著影响财务因素。
    The key to high-quality development in the textile and apparel industry lies in enhancing technological innovation and optimizing the efficiency of technological innovation. Based on data from 60 A-share listed companies in the textile and apparel sector in China from 2013 to 2022, this study employs a three-stage DEA model and the Malmquist index model to measure changes in technological innovation efficiency from static and dynamic perspectives. Additionally, it uses a Tobit model to analyze the impact and mechanisms of management and financial factors on technological innovation efficiency. The results indicate that: (1) Compared to the manufacturing industry and its sub-sectors, the overall technological innovation efficiency of listed textile and apparel companies was relatively low and showed a declining trend between 2013 and 2022; (2) Over the decade, the average total factor productivity of these listed companies increased by 1.7%, exhibiting a \"W\" shaped fluctuation, with technological progress, pure technical efficiency, and scale efficiency all showing weak improvement; (3) Management and financial factors significantly influence technological innovation efficiency. Specifically, employee quality, profitability, and operational capability are positively correlated with technological innovation efficiency and have long-term effectiveness, while firm age, management costs, equity concentration, development ability, and debt repayment capacity are negatively correlated with technological innovation efficiency; (4) Different types of enterprises show differences in the significance of management factors, while whether the same person holds both managerial positions significantly affects financial factors.
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  • 文章类型: Journal Article
    在工业部门,植物残料在纺织染色用生物着色剂的生产中受到关注。当前的研究工作集中在研究使用甜菜叶作为天然染料来源以染色棉织物的可能性。使用不同的提取方法来分离甜菜残留材料中存在的生物着色剂,并且使用5%的KOH甲醇溶液获得最有利的着色剂产率。为了获得最佳的染色结果,棉织物在60°C的温度下进行染色45分钟,使用浓度为6g/100mL的盐溶液和50mL的提取的染料溶液。使用傅立叶变换红外光谱分析对染料进行表征,证实了在叶提取物中存在槲皮素。为了创造一系列的颜色变化,在本质上是化学的媒染剂,比如单宁酸,硫酸铁,重铬酸钾,还有硫酸铜,以及基于生物的媒染剂,比如洋葱皮,石榴皮,指甲花,金色淋浴树皮,还有姜黄,被和谐地雇用。相比之下,生物媒染剂的利用导致较深的色调,表现出增强的颜色强度和优异的色牢度性能,洗涤值为4-5,4用于湿摩擦,4-5用于干摩擦,和4-5的光。这项研究的结果在生态友好的废物管理方面具有重要价值,并通过利用废弃的残留材料作为着色剂的天然来源,为工业部门的进步做出了贡献。
    In the industrial sector, vegetable residual materials have received attention in the production of bio-colorant for textile dyeing. The current research endeavor is centered on investigating the possibility of using sugar beet leaves as a natural source of dye for the purpose of dyeing cotton fabrics. Different extraction methods were utilized to isolate the bio-colorant present in sugar beet residual material, and the most favorable colorant yield was obtained using a 5% methanolic KOH solution. For optimal dyeing results, the cotton fabric performed dyeing for a duration of 45 min at a temperature of 60 °C, using a salt solution concentration of 6 g/100 mL and 50 mL of the extracted dye solution. Characterization of dye using Fourier transform infrared spectroscopy analysis confirmed the presence of quercetin in the leaf extract. For the creation of a range of color variations, mordants that were chemical in nature, such as tannic acid, iron sulfate, potassium dichromate, and copper sulfate, as well as mordants that were bio-based, such as onion peel, pomegranate peel, henna, golden shower bark, and turmeric, were employed in harmony. In comparison, the utilization of bio-mordants resulted in darker shades that exhibited enhanced color intensity and superior color fastness properties with the value of 4-5 for wash, 4 for wet rubbing, 4-5 for dry rubbing, and 4-5 for light. The findings of this study hold significant value in terms of ecofriendly waste management and contribute to advancements in the industrial sector by utilizing waste residual materials as a natural source of colorants.
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  • 文章类型: Journal Article
    一些主要用于纺织工业的合成染料与内分泌干扰有关,导致不孕,在其他疾病中。尚不清楚绝经前染料中职业接触Vat纺织染料是否会改变激素水平。
    我们旨在确定职业性接触还原染料对卵泡期和黄体期女性纺织染料生殖激素的可能影响,同时将其与年龄类别和暴露持续时间相关。
    在\"Itoku\",Abeokuta,尼日利亚,在约80名女性参与者中,年龄和性别匹配者为55名非暴露(对照)女性参与者.使用半结构化问卷,社会人口统计学,获得参与者的职业细节和LMP.在卵泡期和黄体期收集血清样品,并使用酶免疫分析法测定雌性激素。采用Mann-WhitneyU和Z-统计量进行比较。P值<0.05被认为是显著的。
    在卵泡期,结果表明,暴露者的平均FSH排名较低(≤20岁),而雌二醇排名较高(p<0.05)(31-40岁)。黄体期(年龄31-40岁)的孕酮和雌二醇的平均等级在暴露者中较高(p<0.05),而雌二醇(年龄≥41岁)排名较低(p<0.05)。催乳素与暴露时间呈显着的负相关。
    在Abeokuta中,女性染料中的Vat染料的职业暴露与一些性激素破坏有关,这似乎与年龄和暴露时间有关。
    UNASSIGNED: Some synthetic dyes used mainly in textile industries have been associated with endocrine disruption, resulting in infertility, among other disorders. It is unknown if occupational exposure to Vat textile dyes among premenopausal dyers alters hormonal levels.
    UNASSIGNED: We aimed at determining the probable effects of occupational exposure to Vat dyes on reproductive hormones of female textile dyers in the follicular and luteal phases while relating this to age categories and duration of exposure.
    UNASSIGNED: Thirty-three premenopausal Vat textile dyers at \"Itoku\", Abeokuta, Nigeria, among a population of about 80 female dyers were age and sex-matched with 55 non-exposed (control) female participants. Using semi-structured questionnaires, socio-demographic, occupational details and the LMP of participants were obtained. Serum samples were collected in follicular and luteal phases and assayed for female sex hormones using Enzyme Immunoassay. Mann-Whitney U and Z- statistic were used for comparison of the two groups. P-value < 0.05 was considered to be significant.
    UNASSIGNED: In the follicular phase, the result showed a lower mean FSH ranking (in age category ≤20 years) and higher (p<0.05) Estradiol ranking (in age category 31-40 years) in the exposed than the unexposed. Mean ranks of Progesterone and Estradiol in the luteal phase (age category 31-40 years) were higher (p<0.05) in the exposed, while Estradiol (age category ≥41years) ranked lower (p<0.05). Prolactin demonstrated a significant inverse relationship with the duration of exposure.
    UNASSIGNED: Occupational exposure to Vat dye among female dyers in Abeokuta is associated with some sex hormone disruption which appears to be age and duration of exposure-related.
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  • 文章类型: Journal Article
    纺织工业的发展对自然环境有负面影响。棉花种植,染色织物,washing,和整理需要大量的水和能源,并使用许多化学品。纺织工业产生的最危险的污染物之一是染料。其中大多数具有复杂的化学结构和对环境的不利影响。尤其是偶氮染料,其被细菌分解可能导致致癌芳香胺的形成,引起了很多关注。利用微生物的代谢潜力来生物降解染料似乎是将其从污染环境中消除的有希望的解决方案。基因组学等组学科学的发展,转录组学,蛋白质组学,代谢组学允许对细胞中发生的过程进行全面的研究。尤其是多组学,它结合了来自不同生物分子水平的数据,提供对整个生物降解过程的综合理解。多亏了这个,有可能阐明染料生物降解机制的分子基础,并开发染料污染环境的有效生物修复方法。
    The development of the textile industry has negative effects on the natural environment. Cotton cultivation, dyeing fabrics, washing, and finishing require a lot of water and energy and use many chemicals. One of the most dangerous pollutants generated by the textile industry is dyes. Most of them are characterized by a complex chemical structure and an unfavorable impact on the environment. Especially azo dyes, whose decomposition by bacteria may lead to the formation of carcinogenic aromatic amines and raise a lot of concern. Using the metabolic potential of microorganisms that biodegrade dyes seems to be a promising solution for their elimination from contaminated environments. The development of omics sciences such as genomics, transcriptomics, proteomics, and metabolomics has allowed for a comprehensive approach to the processes occurring in cells. Especially multi-omics, which combines data from different biomolecular levels, providing an integrative understanding of the whole biodegradation process. Thanks to this, it is possible to elucidate the molecular basis of the mechanisms of dye biodegradation and to develop effective methods of bioremediation of dye-contaminated environments.
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  • 文章类型: Journal Article
    有效地减轻和管理由纺织工业的染料和废水的不当处置引起的环境污染非常重要。本研究评估了黄链霉菌3MGH对三种不同的偶氮染料的脱色和降解效果,即反应橙122(RO122),直接蓝15(DB15),和直接黑38(DB38)。各种分析技术,如傅里叶变换红外(FTIR)光谱,高效液相色谱法(HPLC),使用气相色谱-质谱(GC-MS)分析染料的降解副产物。S.albidofavus3MGH表现出强大的脱色能力RO122,DB15和DB38,达到60.74%,61.38%,在浓度为0.3g/L的情况下,5天内脱色53.43%,分别。发现这些偶氮染料最大脱色的最佳条件是35°C的温度,pH值为6,蔗糖作为碳源,和牛肉提取物作为氮源。此外,脱色工艺优化后,用S.albidofavus3MGH治疗导致94.4%的显着减少,86.3%,分别占RO122、DB15和DB38总有机碳的68.2%。经过治疗,我们发现了漆酶的特定活性,降解机制的介导酶之一,为5.96U/mg。与对照样品相比,降解代谢物的FT-IR光谱分析显示出峰的特定变化和位移。GC-MS分析显示代谢物如苯的存在,联苯,和萘衍生物。总的来说,这项研究证明了S.albidofavus3MGH对不同偶氮染料的有效脱色和降解的潜力。这些发现通过各种分析技术得到了验证,阐明了该菌株采用的生物降解机制。
    Efficiently mitigating and managing environmental pollution caused by the improper disposal of dyes and effluents from the textile industry is of great importance. This study evaluated the effectiveness of Streptomyces albidoflavus 3MGH in decolorizing and degrading three different azo dyes, namely Reactive Orange 122 (RO 122), Direct Blue 15 (DB 15), and Direct Black 38 (DB 38). Various analytical techniques, such as Fourier Transform Infrared (FTIR) spectroscopy, High-Performance Liquid Chromatography (HPLC), and Gas Chromatography-Mass Spectrometry (GC-MS) were used to analyze the degraded byproducts of the dyes. S. albidoflavus 3MGH demonstrated a strong capability to decolorize RO 122, DB 15, and DB 38, achieving up to 60.74%, 61.38%, and 53.43% decolorization within 5 days at a concentration of 0.3 g/L, respectively. The optimal conditions for the maximum decolorization of these azo dyes were found to be a temperature of 35 °C, a pH of 6, sucrose as a carbon source, and beef extract as a nitrogen source. Additionally, after optimization of the decolorization process, treatment with S. albidoflavus 3MGH resulted in significant reductions of 94.4%, 86.3%, and 68.2% in the total organic carbon of RO 122, DB 15, and DB 38, respectively. After the treatment process, we found the specific activity of the laccase enzyme, one of the mediating enzymes of the degradation mechanism, to be 5.96 U/mg. FT-IR spectroscopy analysis of the degraded metabolites showed specific changes and shifts in peaks compared to the control samples. GC-MS analysis revealed the presence of metabolites such as benzene, biphenyl, and naphthalene derivatives. Overall, this study demonstrated the potential of S. albidoflavus 3MGH for the effective decolorization and degradation of different azo dyes. The findings were validated through various analytical techniques, shedding light on the biodegradation mechanism employed by this strain.
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  • 文章类型: Journal Article
    该研究探讨了三层纺织服装供应链中不确定需求下的战略定价和质量改进决策。根据面料制造商(FM)是否在质量上进行投资,以及服装制造商(GM)或服装零售商(GR)是否愿意分担成本,构建了五个博弈模型来考察不同成员成本分担对最优决策和利润的影响。通过进行理论和数值分析,我们发现:(1)GM或GR的成本分担对质量改进起着积极的作用,至于谁的成本分担根据成本分担的比例在提高质量方面表现更好,质量改进是最高的,两个成员同时分担成本。(2)当两个成员同时分担成本时,FM获得最高的利润,然而,谁的成本分摊对调频公司更有利可图,也与成本分摊比例有关;简而言之,FM总是从成本分摊中受益,无论一个成员这样做还是两个成员这样做。(3)当只有GR(GM)分担成本时,GM(GR)获得最高利润,结果表明,如果一个成员分担了成本,参与费用分摊的其他成员是否可以根据其比例使前者受益。具体来说,当GM(GR)选择分担成本且比例相对较低时,GR(GM)加入成本分摊对前者有利;否则,是有害的。
    The study explores the strategic pricing and quality improvement decisions under uncertain demand in a three-layer textile and garment supply chain. According to whether the fabric manufacturer (FM) invests in quality or not and whether the garment manufacturer (GM) or garment retailer (GR) is willing to share the costs or not, five game models are constructed to investigate the impact of different members\' cost sharing on the optimal decisions and profits. By conducting a theoretical and numerical analysis, we find that: (1) The GM\'s or GR\'s cost sharing plays a positive effect on the quality improvement, as for whose cost sharing performs better in improving the quality depending on the proportion of cost sharing, and the quality improvement is highest with both members share the costs simultaneously. (2) The FM receives the highest profit when both members share the costs simultaneously, however, whose cost sharing is more profitable for the FM is also related to the proportion of cost sharing; in short, the FM always benefits from the cost sharing, no matter one member does this or two members do this. (3) The GM (GR) gains the highest profit when only the GR (GM) shares the costs, and the results indicate that if one member has shared the costs, whether the other member engaging in cost sharing could benefit the former depending on their proportions. Specifically, when the GM (GR) chooses to share the costs and the proportion is relatively low, the GR(GM) joining in cost sharing is beneficial to the former; otherwise, is harmful.
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  • 文章类型: Journal Article
    烷基酚乙氧基化物包括许多人为化学物质,如壬基酚(NP),辛基苯酚(OP)和壬基苯酚乙氧基化物(NPEOs)。这项研究的目的是评估4-NP检测的频率和幅度,加拿大与纺织相关的市政污水处理厂(MWWTPs)下游沉积物中的OP和NPEO,以确定监管措施是否对接收环境产生了有益影响。在魁北克省(加拿大)的四个地方获得了表面沉积物,并分析了壬基酚,壬基苯酚单乙氧基化物(NP1EO),2015年至2018年壬基苯酚二乙氧基化物(NP2EO)和辛基苯酚。化合物的单独浓度从未检测到419ng/g变化。在分析的四种化合物中,NP的检测频率最高,检出率为75%,而在任何样品中均未检测到OPs。由于加拿大的监管行动已经大大减少了纺织工厂和制成品中NP/NPEO的使用,对于这项研究,沉积物中这些化合物的潜在来源可能来自MWWTPs的排污口,但与纺织厂无关,以及这些化合物在农药产品中作为制剂的用途。最后,来自欧洲卫生科学委员会的加拿大沉积物质量指南毒性当量方法(TEQ)为1400ng/g或淡水沉积物中NP的1310ng/g指南没有超标,环境和新兴风险。我们假设,由于沉积物在水柱中的再悬浮,沉积物中这些化合物的显着浓度可能是地表水中4NP的相关且连续的来源。
    Alkylphenol ethoxylates comprise of many anthropogenic chemicals such as nonylphenol (NP), octylphenol (OP) and nonylphenol ethoxylates (NPEOs). The objectives of this study were to assess the frequency and magnitude of detections of 4-NP, OP and NPEOs in Canadian sediment downstream of textile associated municipal wastewater treatment plants (MWWTPs) to determine if regulatory actions have had a beneficial impact on the receiving environment. Surficial sediments were obtained in four locations in the province of Québec (Canada) and were analyzed for nonylphenol, nonylphenol monoethoxylates (NP1EO), nonylphenol diethoxylates (NP2EO) and octylphenol from 2015 to 2018. Individual concentrations of the compounds varied from non detect to 419 ng/g. Of the four compounds analyzed, NP was detected the most frequently with a 75% detection rate while OPs were not detected in any of the samples. Since the Canadian regulatory actions have drastically reduced NP/NPEOs usage in textile mill factories and manufactured products, the potential source of these compounds in sediment for this study could stem from the outfall from the MWWTPs but not related to textile mills as well as from the usage of these compounds as formulants in pesticide products. Lastly, there were no exceedances to the Canadian Sediment Quality guideline toxic equivalency approach (TEQ) of 1400 ng/g or the 1310 ng/g guideline for NP in freshwater sediment from the European Scientific Committee on Health, Environmental and Emerging Risks. We hypothesize that the significant concentrations of these compounds in sediment may be a relevant and continuous source of 4NP in surface waters due to resuspension of sediment in the water column.
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  • 文章类型: Journal Article
    漆酶是在其结构中具有铜的放热酶,并且通过提供酚类化合物和芳香胺的氧化和分解木质素而在生物降解中具有重要作用。这项研究的目的是通过对从纺织厂处理污泥中分离出的Proteusmirabilis进行优化研究,以最小的成本和能量达到最大的漆酶活性。为了提高分离株的漆酶活性,通过研究碳(葡萄糖,果糖,醋酸钠,羧甲基纤维素,木糖)和氮源(硝酸钾,酵母提取物,来自大豆的蛋白胨,细菌蛋白胨),孵化时间,pH值,温度和硫酸铜(II)浓度,然后根据获得的结果。响应面法(RSM)对六个不同的变量进行了三个水平。根据从RSM获得的数据,在pH7.77,温度30.03oC时达到最大漆酶活性,0.5g/LCuSO4、0.5g/L果糖和0.082g/L酵母浸膏条件。毕竟,漆酶活性增加2.7倍。因此,通过优化研究可以提高奇异假单胞菌的漆酶活性。作为文献研究的结果获得的信息是,在实验室和工业规模中生产的漆酶是昂贵的并且它们的量是低的。这项研究对于以更少的成本和能量从奇异假单胞菌获得更多的漆酶活性是重要的。
    Laccase is an exothermic enzyme with copper in its structure and has an important role in biodegradation by providing oxidation of phenolic compounds and aromatic amines and decomposing lignin. The aim of this study is to reach maximum laccase enzyme activity with minimum cost and energy through optimization studies of Proteusmirabilis isolated from treatment sludge of a textile factory. In order to increase the laccase enzyme activities of the isolates, medium and culture conditions were optimized with the study of carbon (Glucose, Fructose, Sodium Acetate, Carboxymethylcellulose, Xylose) and nitrogen sources (Potassium nitrate, Yeast Extract, Peptone From Soybean, Bacteriological Peptone), incubation time, pH, temperature and Copper(II) sulfate concentration then according to the results obtained. Response Surface Method (RSM) was performed on six different variables with three level. According to the data obtained from the RSM, the maximum laccase enzyme activity is reached at pH 7.77, temperature 30.03oC, 0.5 g/L CuSO4, 0.5 g/L fructose and 0.082 g/L yeast extract conditions. After all, the laccase activity increased 2.7 times. As a result, laccase activity of P. mirabilis can be increased by optimization studies. The information obtained as a result of the literature studies is that the laccase enzymes produced in laboratory and industrial scale are costly and their amounts are low. This study is important in terms of obtaining more laccase activity from P.mirabilis with less cost and energy.
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  • 文章类型: Case Reports
    本文从企业在发展中经济中运作的角度出发,建立了外包协作模型。该模型认为,居住在发达国家的最终产品的生产者,和发展中国家制造工厂的经营者相互合作。最终产品生产商为发展中国家的中间产品生产提供总部服务。制造工厂的运营商也在国内经济中提供服务。这种安排导致发达国家和发展中国家公司之间的外国外包合作(FOC)。制造工厂的经营者在成本约束下实现收益最大化。一阶条件表明,熟练劳动力工资的增加,国内投入的价格,和生产成本决定了FOC。另一方面,外国总部服务需求和价格的增加增加了FOC。基于从费萨拉巴德市(巴基斯坦)的217家服装(纺织和服装)公司收集的数据进行的实证分析显示,工资与劳动生产率比率的增加会降低FOC。劳动力技能和国外总部服务的提高催生了FOC,而范围经济的增加增强了FOC。此外,生产成本和FOC之间存在倒U型关系,这表明在初始阶段,公司的生产成本随着FOC水平的增加而增加,但在临界点之后不久,随着FOC的进一步增加,公司的成本开始下降。
    This paper develops an outsourcing collaboration model from a firm\'s perspective operating in a developing economy. The model considers that producers of the final goods residing in a developed country, and operators of manufacturing plants in a developing country collaborate with each other. The final goods producer supplies headquarter services for the production of intermediate goods in the developing country. The operators of manufacturing plants also supply their services in the domestic economy. This arrangement leads to foreign outsourcing collaborations (FOC) between firms of developed country and developing country. The operators of manufacturing plant maximize revenue subject to the cost constraint. The first order conditions suggests that an increase in wages of skilled labor, price of domestic inputs, and cost of production deter FOC. On the other hand, an increase in demand for and price of foreign headquarter services increases the FOC. Empirical analysis based on data collected from 217 clothing (textile and apparel) firms in the city of Faisalabad (Pakistan) reveals that an increase in wage to labor-productivity ratio reduces FOC. An improvement in skilled of the labor and foreign headquarter services give rise to FOC, whereas an increase in economies-of-scope enhances FOC. Additionally, an inverted U-shaped relationship is found between the cost of production and FOC, which shows that at the initial stage, the firm\'s cost of production increases with an increase in the level of FOC, but soon after the tipping point, the firm\'s cost starts decreasing with a further increase in FOC.
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