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This study aims to improve the natural dyeing recipe with better light fastness using ascorbic acid (vitamin C) with pulverised plant dyes.

Silk fabrics pre-mordanted with alum (aluminium ammonium sulphate) were dyed using six types of plant dyes available in Sarawak, Malaysia, namely, Engkerabai leaves (Psychotria viridiflora), Ketapang leaves (Terminalia catappa), mangrove bark (Ceriops tagal), Sepang wood (Caesalpinia sappan), mangosteen husk (Garcinia mangostana) and onion skin (Allium cepa). Then, the dyed samples were immersed in vitamin C. The dyed and vitamin C-treated silk samples were exposed to direct sunlight for 40 h to test whether vitamin C had any effect on the light fastness of the dyed samples.

It was found that the fabric samples using vitamin C for after-treatment, particularly Engkerabai, Ketapang, mangrove and mangosteen, exhibited better light fastness. The colours of the four samples changed and looked darker when compared to the non-treated fabric samples. However, it was observed that vitamin C had a reverse effect on Sepang wood and onion skin. The acidic aqueous solution of vitamin C discharged the dyed samples instead.

In conclusion, depending on the plant types, vitamin C can be used to improve the light fastness of natural dyes or as a reducing agent for natural dyes.

This paper highlights an on-going study that produces soluble-powdered natural dye extracts from Sebangki barks (Neesia spp., Bomb.; Tristaniopsis spp., Myrt.), Engkerabai Paya leaves (Psychotria viridiflora Zoll. ex. Miq.) and Engkudu roots (Morinda citrifolia L.). These three natural colourants are typically used by the native Iban community in Sarawak to dye silk threads for Pua Kumbu weaving. The two primary objectives of this study are to convert natural dye extracts into soluble powder using solvent extraction and to formulate textile dyeing recipes with good colourfastness and lightfastness using powdered natural dyes extracts. The successful experiments show that distilled water and ethanol can be used as solvents to extract natural dyes from Neesia spp., Bomb.; Tristaniopsis spp., Myrt. barks, Morinda citrifolia L. roots, Psychotria viridiflora Zoll. ex. Miq. leaves. In addition, it is proven that the method of freeze drying is capable of converting liquid dye extracts into soluble powder.

To examine the effect of negotiation training and conflict management styles on the relations between third‐party actors involved in international peacekeeping situations, we analyze data from a sample of Dutch military peacekeepers on missions between 1995 and 1999 (N = 850). We predict and find, contrary to the traditional “contact hypothesis” (Allport, 1954), that peacekeepers' contact with Non‐Governmental Organization (NGO) workers was positively associated with conflict between them, and this increased if the peacekeeper possessed an avoiding conflict management style. When sufficiently trained in negotiations, peacekeepers who had intensive contact with NGO personnel and possessed a dominating conflict management style were less likely to become personally involved in conflicts with NGO workers. Implications for conflict management and training are discussed.

The purpose of this study is to investigate the possibility of dyeing polyester (PET) fabric with natural dye extracted from annatto seeds using high temperature dyeing method.

PET fabric was dyed with annatto extract by varying dyeing parameters (temperature, time, pH and dye concentration) to determine the optimum dyeing conditions. The influences of KAl(SO₄)₂, FeSO₄, gallnut mordants or a commercial UV absorber on colour yield and fastness properties were further studied.

Optimum results were obtained when the fabric was dyed at 130°C for 30 min in a dyebath containing 15 per cent (owf) annatto dye at pH 6. The dyed fabric had an orange shade and exhibited good to excellent wash, crock, perspiration fastness and fair light fastness. Further dyeing with mordants or UV absorber mostly resulted in lower colour yield and similar fastness properties.

Although the light fastness was slightly improved to moderate level for the sample with UV absorber, a noticeable colour staining on cotton portion of multi-fibre fabric occurred when subjected to standard washing test. Compared to C.I. Disperse Orange 73, the annatto dye exhibited comparable colour fastness but had inferior light fastness when dyed at approximately the same colour strength.

Natural colourants from annatto seeds can be used to dye PET fabric at high temperature without mordants, yielding deep orange shade and satisfactory fastness properties. This study provides a promising application to reduce the environmental impact of synthetic dyes.

Supplier selection is a complex and strategic activity needed in every organization, involving many stakeholders and different attributes as price, delivery performance, and product quality. Globalization, in the last decades, increased the competitiveness between vendors, enhancing the use of decision models to support the best choice based on optimizations and bidding variations due to specific needs. This chapter presents three models of multi-dimensional auctions to improve an international humanitarian NGO process procurement efficiency by reducing procurement costs and the decision-making process time. These models have the advantage to be easily implementable in typically complex environments where there is a large number of categories, suppliers, and other features.

The first proposed model uses combinatorial auctions and is suited for procurement, where suppliers can benefit from cost complementarity. The second one uses volume discount auctions and is suited for volumetric purchases, where discounts for large quantities are common. The third one is a multi-attribute model, which computes the best possible solution considering several criteria and can be used in case of complex purchases that involve various categories and trade-offs and are subject to spot prices.

Several design considerations for this type of auctions are reviewed, as well as the mathematical formulation to determine the best alternative (i.e., winner) that can be solved using simple tools like Microsoft Excel. The models are optimized by a mixed-integer programming, and the multi-attribute one is developed using multi-criteria decision analysis (MCDA). All three models developed in this research showed superior results compared to the baseline, being between 9% and 20% more efficient than a regular supplier selection (singly choosing the lowest price) and improving the bidding compliance.

This paper explores environmental accountability and downward accountability role of nongovernmental organisations (henceforth NGOs) under Extended Producer Responsibility (EPR) in the food and beverage industry of Nigeria. The paper relies on empirical data gathered from qualitative interviews of three stakeholders – accountants, Corporate Social Responsibility Officers (CSROs), CEOs and NGO CSROs. It employed theoretical conceptualisation of environmental accountability and NGO's downward accountability. Analysis shows that despite the existence of attributes of environmental accountability such as sense of responsibility on the part of corporations and citizens' rights to demand for and enforce accountability, passivity of citizens' right caused by vulnerability prevails. The finding also shows that downward accountability roles of NGOs in the industry have been framed as that of enhancing activities in the value chain. Part of this is RecyclePay project that funds education for the poor. Thus NGOs' downward (environmental) accountability in Nigeria has potential to promote environmental well-being, beneficiary's economic empowerment and education for the poor, thereby simultaneously addressing vulnerability. It shows that vulnerability may induce a different conceptualisation of environmental accountability than that of a normal democratic setting where the citizens are deemed to have right to demand and enforce (environmental) accountability. This paper contributes to our understanding of (environmental) accountability and downward accountability role of NGOs within an emerging market context.

The purpose of this study is twofold: first, to examine the role of non-governmental organizations (NGOs) in increasing customer environmental awareness (CEA) to decrease the municipal solid waste (MSW), and secondly, to examine the effect of government policies in the amount of air pollution caused by transfer stations (TSs).

This study proposes a mixed-integer nonlinear programming model. For solving this multi-objective problem, the authors use epsilon constraint method, which presented eight Pareto solutions. For selecting the best solution, the analytic hierarchy process approach is used. The presented model is applied on a real case study, and the results are discussed and sensitivity analysis is implemented on the parameters of the concern.

This study confirms the assumption that by allocating budget to NGOs for increasing CEA, the produced waste will be decreased.

In the present study, the authors only investigate air pollution caused by TS. Future studies can investigate other types of pollution. Furthermore, uncertainty in the amount of produced waste can be variable making the problem closer to the real environment. In this case, robust optimization may have better results.

Based on the results of sensitivity analysis, some implications obtain that can highlight by managers in the decision-making process. The operational costs of TS have a critical aspect in founding TS, so using new technology and high-tech machines for operational processes of TSs, can result in decreasing the running cost of TSs. Also, the determination of TS capacity is a remarkable issue in optimization, which should be paid special attention to this for the design of TSs in the planning phase of the system. Moreover, collaborating with NGOs has a good effect on increasing CEA that results in a decrease of MSW.

The role of NGOs and government simultaneity has been considered in a green supply chain. Moreover, the authors considered TS between source and disposal that reduce the time of transferring waste. Therefore, this study can be beneficial for the MSW management system, which faces the problems in the lack of capacity and transportation problems and environmental issues by proposing solutions in three studies including economic, environmental and social aspects.

Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.

The purpose of this study was to explore the phenomenon of leadership development as experienced by non-government organization (NGO) executive leaders in international agricultural development. Data were collected from twelve executive NGO leaders through in-depth interviews to understand the textural and structural essences of the participants’ lived experiences of leadership development. Findings indicated the integral role of mentoring in leadership development prior to obtaining an executive leadership role and supported the conceptual model inclusive of mentoring as a mediating factor of efficacious leadership development. The study provided implications and future research recommendations for executive leaders in international agricultural development, as well as for leadership educators and practitioners.

In the past two decades, the growth in the number and severity of disasters causes a rapid increase in the presence of NGOs for more effective response and efficient management of disasters. The NGOs must spend part of their resources on attracting funds to fulfill their humanitarian goals. However, limited number of donors and received contributions leads to a competition among NGOs for fundraising. Therefore, managing the relationship between these organizations and donors is very important. This paper aims to examine the competitive and coopetitive behavior of NGOs to model the interaction.

To achieve this purpose, by using game theory, two mathematical programing models are presented to examine the two inter-organizational interactions among NGOs.

The results show that if the NGOs work together, all the organizations, donors and affected people will benefit, and the accrued disaster will be managed more efficiently.

The expressed benefits of coopetition of NGOs can be an incentive for them to work together to manage disasters effectively.

To the best of authors’ knowledge, no research has considered the impact of the coopetition of NGOs in achieving their social mission successfully. Therefore, this paper can be seen as a valuable resource in this field.