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1 – 10 of 58Patrick H. Mooney, Keiko Tanaka and Gabriele Ciciurkaite
This chapter seeks to address questions related to the convergence among alternative agrifood movements as well as the convergence between alternative and conventional practices…
Abstract
This chapter seeks to address questions related to the convergence among alternative agrifood movements as well as the convergence between alternative and conventional practices with a focus on local movements. We reconstruct the common conflation of the alternative/conventional binary into a multidimensional measure that recognizes the complex interactions of economic, political, social, and cultural elements in the construction of convention, alterity, and opposition. We also consider several forms of possible convergence: multi-organizational, multi-sectoral (among elements of the agrifood system), multidimensional (among political, economic, cultural, and social practices), and multilevel or scale (hierarchy of spatially embedded governance units). These matters are empirically examined by focusing on the rapidly growing Food Policy Council (FPC) movement in North America. We address the question of this movement’s diffusion, consider its variable linkages between state and civil society, and examine the substantive practices and framings in which the movement has been engaged. While we find that most FPC practices are probably vulnerable to conventionalization, the movement’s most valuable function may be its modular form. That form functions as an incubator of multi-organizational and multi-sectoral experimental practices in a multiplicity of local environments. Further, ties between FPCs provide a networking mechanism for transmitting information about the successes and failures of those experiments among hundreds of locales and regions. Finally, the discourse among the FPC leadership amplifies values favoring the democratization of food, and articulates beliefs in the right to food as well as notions of food citizenship and sovereignty.
Lijuan Zheng, Chengyong Wang, Xin Zhang, Yuexian Song, Lunqiang Zhang and Kefeng Wang
The purpose of this study is to present the entry drilling process of flexible printed circuit board (FPCs) and its influence on hole quality, especially hole location accuracy…
Abstract
Purpose
The purpose of this study is to present the entry drilling process of flexible printed circuit board (FPCs) and its influence on hole quality, especially hole location accuracy. Compared with the traditional PCB drilling process, the technology of drilling FPCs is facing more problems, such as hole location accuracy, smear on the hole wall surface, burned hole wall surface, etc. Moreover, the materials of FPCs are quite different from the rigid printed circuit boards (RPCs). FPCs no longer contain glass fiber cloths to reinforce resin, resulting in flexibility. Micro-hole quality is the most important issue in FPC drilling. Suggestions were given to obtain higher hole qualities and higher FPC reliability.
Design/methodology/approach
The entry drilling process of FPC with different kind of entry boards was observed by a high-speed camera. The hole qualities of FPC micro-drilling, especially hole location accuracy and hole entrance quality, were measured. The relationship between entry boards and hole quality was analyzed.
Findings
Significant sliding occurred when drilling FPC with using no-entry board or pure aluminum plate entry board. On the contrary, no significant sliding occurred when using LC-110 or resin-coated aluminum foil (MVC) entry boards. The type, thickness and use-pattern of entry boards influenced hole location accuracy of FPCs seriously. In addition, entry board also influenced the micro-hole entrance quality and micro-hole diameter. The entrance quality of drilling FPC with LC-110 entry board was the best. The diameter variation of drilling FPC with MVC entry board was the smallest. The hole location accuracy decreased as the thickness of entry board increased. Thus, the best use-pattern of entry board was putting a LC-110 under MVC entry board, resulting in best entrance quality and hole location accuracy.
Originality/value
The technology and manufacturing of FPCs in China are obviously behind. Research of FPCs micro-drilling and research data are lacking so far. Thus, it is most necessary to improve the technology level of FPCs micro-drilling in China. Researches on hole quality, especially hole location accuracy of FPCs drilling, were performed in this paper. Suggestions were given to obtain higher hole quality of FPCs.
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Several important factors are often neglected or forgotten by engineers and designers with respect to designing for cost‐effective manufacture of the different types of flexible…
Abstract
Several important factors are often neglected or forgotten by engineers and designers with respect to designing for cost‐effective manufacture of the different types of flexible printed circuits (FPCs). This paper discusses the various design features which influence the cost of FPC production, offers layout guidelines and considers the items affecting flexibility. Designing manufacturable products can lead to benefits such as reduced lead times, lower material costs, higher quality and increased yields.
Eugenia Czernyszewicz and Małgorzata Zdzisława Wiśniewska
The authors aimed to identify the opinions of young adult consumers regarding food processing companies’ (FPCs) credibility in terms of food safety (FS).
Abstract
Purpose
The authors aimed to identify the opinions of young adult consumers regarding food processing companies’ (FPCs) credibility in terms of food safety (FS).
Design/methodology/approach
The authors surveyed Generation Z (GenZ) consumers. The authors assessed the reliability of the research questionnaire using Cronbach’s alpha statistics. The authors used descriptive statistics and one-way ANOVA analysis of variance in the data analysis to determine intergroup variability. The authors performed statistical analyses using IBM SPSS Statistics. 27.
Findings
The most valued determinants for consumers were competence and skills, and the most valued family members’ opinions on FS, followed by experts’ opinions. FS concerns are more associated with FPCs than with farmers. The ethics of conduct and moral responsibility play an important role in assessing the FPCs’ credibility.
Research limitations/implications
The questionnaire did not focus on specific food industries, such as fruit and vegetables, fish, meat, dairy, etc. In the future, a similar survey on producers’ credibility should consider the issue of FS risks associated with the specifics of a particular industry.
Originality/value
The authors proposed a set of factors that may determine young adult consumers’ perception of the FPCs’ credibility, which they may use for research within other consumer groups.
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Amarnath Tripathi, Nisha Bharti, Sucheta Sardar and Sushant Malik
This paper examines the impact of the Covid-19 induced lockdown on selected vegetables to confirm if the vegetable supply chain was disrupted during that period. It attempts to…
Abstract
Purpose
This paper examines the impact of the Covid-19 induced lockdown on selected vegetables to confirm if the vegetable supply chain was disrupted during that period. It attempts to see if direct marketing via FPOs/FPCs helped Indian farmers to cope with adverse situations aroused in vegetable marketing.
Design/methodology/approach
This study opted for mixed methods research. First, a granular data set comprising daily observation on wholesale price and the market arrival of vegetables were analysed. Descriptive statistics and Kalmogorov-Smirnov test were used to understand the severity of disruptions in the vegetable supply chain in India during the lockdown. Then, qualitative information from different stakeholders engaged in the vegetable marketing was collected through a phone survey and assessed using content analysis to comprehend how FPOs have helped farmer’s during this crisis.
Findings
This paper confirms disruptions in the vegetable supply chain. Quantities of chosen vegetables arriving in the mandis were significantly lower than in the previous year for all phases of lockdown. Consequently, prices were much higher than in 2019–2020 for both the lockdown and subsequent phases unlock. Results further suggest that those farmers who are already in networks of FPOs/FPCs are able to get benefited. It was also observed that direct marketing through institutional supports is being more explored in the regions where FPOs/FPCs already exist.
Research limitations/implications
Since it is an exploratory study involving a small sample, the research results may lack generalisability.
Originality/value
This study provides scope for direct marketing through FPOs/FPCs in improving the food supply chain.
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Pan Feng and Junhui Qian
The purpose of this paper is to analyze and forecast the Chinese term structure of interest rates using functional principal component analysis (FPCA).
Abstract
Purpose
The purpose of this paper is to analyze and forecast the Chinese term structure of interest rates using functional principal component analysis (FPCA).
Design/methodology/approach
The authors propose an FPCA-K model using FPCA. The forecasting of the yield curve is based on modeling functional principal component (FPC) scores as standard scalar time series models. The authors evaluate the out-of-sample forecast performance using the root mean square and mean absolute errors.
Findings
Monthly yield data from January 2002 to December 2016 are used in this paper. The authors find that in the full sample, the first two FPCs account for 98.68 percent of the total variation in the yield curve. The authors then construct an FPCA-K model using the leading principal components. The authors find that the FPCA-K model compares favorably with the functional signal plus noise model, the dynamic Nelson-Siegel models and the random walk model in the out-of-sample forecasting.
Practical implications
The authors propose a functional approach to analyzing and forecasting the yield curve, which effectively utilizes the smoothness assumption and conveniently addresses the missing-data issue.
Originality/value
To the best knowledge, the authors are the first to use FPCA in the modeling and forecasting of yield curves.
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Yu‐Chang Pai and Shou‐kuo Sogo Hsu
The purpose of this paper is to present the problem of high‐speed data transmission on flexible printed circuits (FPC) and the common method for transmission signal designs on…
Abstract
Purpose
The purpose of this paper is to present the problem of high‐speed data transmission on flexible printed circuits (FPC) and the common method for transmission signal designs on those FPCs. A new and novel approach using a “voided return path” of the coplanar transmission model is described and the ease of building them in mass production is described.
Design/methodology/approach
Microstrip transmission structures with a “mesh” return were studied and illustrated with emphasis on the problems encountered when the signal changes direction. A new solution using the “voided” return layer of the coplanar transmission model was proposed, simulated, built and tested.
Findings
The use of this novel coplanar structure to solve the problem of gigabit data transmission, with minimum noise and electromagnetic interference on flexible circuits can be achieved at low cost and with the flexibility to have multiple impedances and application for “Dynamic Flex”.
Research limitations/implications
The “voided” coplanar structure has been used successfully. Further, developments are underway to employ a “modified” broadsided‐coupled differential structure that simulated a “twisted pair”.
Originality/value
The paper describes various high‐speed transmission structures on FPC used in computers and servers, combined with high volume mass‐production techniques. It presents the best cost scenario for optimal PCB design flexibility and applications.
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S. Kiyota, T. Koizumi and S. Kobayashi
This paper presents a new roll‐to‐roll (R‐R) production system modified for fine line patterning of flexible printed circuits (FPCs) using the subtractive method. The R‐R system…
Abstract
This paper presents a new roll‐to‐roll (R‐R) production system modified for fine line patterning of flexible printed circuits (FPCs) using the subtractive method. The R‐R system is especially suited to production of FPCs because the material used—copper‐clad laminate (CCU—can be handled as it is rolled. Consideration has been given to methods and materials in designing the machines. They are now operating successfully and are used in single‐sided flexible circuit manufacture. A liquid photosensitive etch resist and a collimated light source are recommended for the system and several factors necessary for achieving R‐R working conditions are discussed. Judging from the experimental results of these systems, using narrower width materials with chemical surface preparation is an effective technique for improving the yield rate. The selection of a liquid photoresist is not so common in the case of rigid printed circuit boards because of the difficulty of the coating process. On the other hand, in the case of flexible PCBs, it is successful not only in terms of resolution characteristics but also of productivity under several different types of coating conditions. It should be noted that use of the conventional subtractive method in the printed circuit field is still advantageous as some semiconductor technologies are applicable.
Lijuan Zheng, Chengyong Wang, Xin Zhang, Xin Huang, Yuexian Song, Kefeng Wang and Lunqiang Zhang
Micro-holes are drilled and plated in flexible printed circuit boards (FPCs) for connecting circuits from different layers. More holes, with diameters smaller than 0.3 mm, are…
Abstract
Purpose
Micro-holes are drilled and plated in flexible printed circuit boards (FPCs) for connecting circuits from different layers. More holes, with diameters smaller than 0.3 mm, are required to be drilled in smaller areas with flexible circuits’ miniaturization. The micro-hole quality of micro-drilling is one of the biggest issues of the flexible circuit manufacturers’ production. However, it is not easy to control the quality of micro-holes. The purpose of this study was to conduct research on the tool wear characteristics of FPC drilling process and its influence on micro-hole quality to improve the micro-hole quality of FPC.
Design/methodology/approach
The tool-wear characteristics of micro-drills after FPC drilling were observed. The influence of spindle speed, feed rate, number of drilled holes and entry board materials on tool-wear was analyzed. The hole qualities of FPC micro-drilling were measured and observed. The relationship between tool-wear and hole quality was analyzed.
Findings
The result showed that the tool-wear characteristics of FPC micro-drilling was similar to the tool-wear characteristics of rigid printed circuit board (RPC) micro-drilling. Abrasive wear occurred on both the main cutting edges and the chisel edges of micro-drills, even though there was no glass fiber reinforcing the cloth inside FPC. Resin adhesion was observed on the chisel edge. The influence of feed and number of drilled holes on tool-wear was significant. Tool-wear significantly influences the hole quality of FPC. Tool-wear will largely decrease the hole position accuracy of FPC micro-holes. Tool-wear will increase the thickness of PI nail heads and the height of exit burrs. Fracture was the main difference between tool wear of FPC and RPC micro-drilling. Resin adhesion of RPC was much more severe than FPC micro-drilling. Increasing the spindle speed properly may improve tool life and hole quality.
Originality/value
The technology and manufacturing of FPC has been little investigated. Research on micro-drilling FPC and research data is lacking so far. The micro-hole quality directly affects the reliability of FPC. Thus, improving the micro-hole quality of FPC is very important.
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Shashi Kant, J.C. Nautiyal and R.A. Berry
A single dimensional measure of economic welfare in terms of per capita income has neglected the contribution of the non‐timber benefits of forests; hence forests have not…
Abstract
A single dimensional measure of economic welfare in terms of per capita income has neglected the contribution of the non‐timber benefits of forests; hence forests have not received their due weight in literature on the development process. Advocates a multi‐dimensional measure of economic welfare. Presents, at the global level, an overview of the contribution of non‐timber forest products and at the micro level a case study from India. Highlights a more complete evaluation of the contribution of forests, and focuses on the economic contribution of forest resources to household income, income distribution, and spread of income over the year.
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