Execution Phase Research Articles

Adjusted TextRank for keyword extraction in petrochemical project correspondence documents

A large petrochemical construction project is typically executed by multiple parties, all bound by contract agreement. During the execution phase, issues and problems may arise because the work details are not clearly specified in the contractual agreement. These issues are formally communicated and documented through written correspondence letters. By identifying important keywords within these formal letters, a comprehensive narrative of the project, including its associated issues, can be identified and analyzed. In this research, we introduce an adjusted TextRank algorithm that integrates external features from the Indonesian FastText language model and term frequency-inverse document frequency (TF-IDF) scores to identify important keywords within a dataset of correspondence letters of petrochemical projects. This enhancement involves refining phrase detection, semantic relationship estimation between words, and part-of-speech (POS) identification for words or phrases. Our results show that the proposed adjustments result in improved evaluation scores compared to the baseline standard TextRank and standard TF-IDF, respectively by 24.1% and 25% in terms of F-1 scores.

Resilient multi-objective mission planning for UAV formation: A unified framework integrating task pre- and re-assignment

Combat effectiveness of unmanned aerial vehicle (UAV) formations can be severely affected by the mission execution reliability. During the practical execution phase, there are inevitable risks where UAVs being destroyed or targets failed to be executed. To improve the mission reliability, a resilient mission planning framework integrates task pre- and re-assignment modules is developed in this paper. In the task pre-assignment phase, to guarantee the mission reliability, probability constraints regarding the minimum mission success rate are imposed to establish a multi-objective optimization model. And an improved genetic algorithm with the multi-population mechanism and specifically designed evolutionary operators is used for efficient solution. As in the task-reassignment phase, possible trigger events are first analyzed. A real-time contract net protocol-based algorithm is then proposed to address the corresponding emergency scenario. And the dual objective used in the former phase is adapted into a single objective to keep a consistent combat intention. Three cases of different scales demonstrate that the two modules cooperate well with each other. On the one hand, the pre-assignment module can generate high-reliability mission schedules as an elaborate mathematical model is introduced. On the other hand, the re-assignment module can efficiently respond to various emergencies and adjust the original schedule within a millisecond. The corresponding animation is accessible at bilibili.com/video/BV12t421w7EE for better illustration.

Combining BIM and Strategic Management for Efficient Planning and Execution of Construction Projects

Construction projects are faced with a range of challenges. These can be addressed significantly by combining Building Information Modeling (BIM) and strategic management (SM) right from planning to execution phases of construction projects. This study argues that these two problem-solving mechanisms can be leveraged in combination for the attainment of efficient planning and execution of construction projects. It draws evidence from secondary data, sourced from the internet and subjected to systematic review and thematic and content analyses. The descriptive analysis done proves BIM and SM to be indeed capable of ensuring efficient planning and execution of construction projects, when duly deployed and the constraints to their application tackled sufficiently. The study concludes that the combination of BIM and SM produces more results and guarantees efficient planning and execution of construction projects much more than when either of them is used alone. Organizations and institutions are charged to resort to combining these strategies as well as others in finding solutions to problems such as those confronting construction projects.

Implementation and performance evaluation of an integrated specimen referral system in Burkina Faso using the national courier services (2020-2022).

In 2017, the Ministry of Health and Public Hygiene (MoH) of Burkina Faso designed and piloted a specimen transport system using the national courier services (La Poste BF) in 4 districts. Based on satisfactory performance indicators, the MoH set a vision aimed at scaling up this system to strengthen disease detection and surveillance of epidemic prone diseases across the country. This work describes the implementation process, performances, and lessons learned. This work describes the implementation process, performances, and lessons learned. Under the leadership of the Directorate of Population Health Protection within the MoH, a stepwise approach was used to bring together multiple partners across sectors to develop the first needed documents including a guide, an implementation plan, Standard Operating Procedures, and data collection tools. Then, the execution phase included equipment purchase, trainings, and consensus on a financing mechanism. Key indicators were defined to allow performance monitoring. The integrated biological specimen referral system (SITEB) was officially launched in January 2020 to transport human biological specimens of priority diseases including COVID-19 from district level to reference laboratories nationwide. As of December 31, 2022, La Poste BF transported 168,856 packages containing 206,314 specimens from all 13 regions. 99.66% of packages were delivered in <24 h as required, and 99.68% of specimens were in good condition at reception. COVID-19 specimens represented respectively 18% and 63% of samples transported in 2020 and 2021. The political will combined with the experience gained during the pilot phase and the commitment and support from all stakeholders laid to the foundation of the effective implementation of this system. Collaboration between two government entities (MoH and Minister of Transport, Urban Mobility, and Road Safety) to benefit public health has led to reasonable pricing for sustainability. Although all documents integrate the "One Health" approach, the system ensures the transport of only human samples for now. Despite security constraints, Burkina Faso has successfully set up a system using the national postal service to ensure the routine transport of specimens for all diseases under laboratory surveillance including laboratory tests for HIV and TB from the district level to reference laboratories nationwide. This system has also proved to be useful and efficient in managing public health emergency.

Streptococcus mitis enhances metal-induced apoptosis in reconstructed human gingiva but not skin

BackgroundCommensal bacteria colonizing oral mucosa and skin play an essential role in maintaining host-microbiome homeostasis. It is unknown whether cytotoxicity resulting from metal ions leaching from medical devices may be influenced by commensal microbes. ObjectiveDetermine whether the extent of apoptosis triggered by nickel or titanium ions is influenced by Streptococcus mitis and whether apoptosis occurs via the intrinsic or extrinsic apoptosis pathway. MethodsReconstructed Human Gingiva (RHG) and Skin (RHS) were topically exposed to titanium or nickel salts in the presence or absence of S. mitis. Cytotoxicity and apoptosis were assessed by histology, immunohistochemistry, TUNEL assay, and Western Blot. ResultsS. mitis alone resulted in negligible cytotoxicity. After metal exposure, localized apoptosis was observed in the epithelium and fibroblasts within the lamina propria hydrogel of both RHG and RHS. S. mitis enhanced metal-mediated apoptosis in gingiva but not in skin. Apoptosis was mediated via the extrinsic pathway caspase 8. Activation of the execution phase of apoptosis occurred via caspases 3 and 7, and PARP-1. ConclusionOur study supports the finding that metals have irritant, cytotoxic properties resulting in apoptosis when leaching into skin or gingiva. Particularly for gingiva, commensal microbes exaggerate this detrimental effect.

Impact of Leg Strength on the Force Produced During a Cross-Punch in Highly Trained Amateur Boxers.

Satkunskiene, D, Bruzas, V, Mantas, M, Snieckus, A, and Kamandulis, S. Impact of leg strength on the force produced during a cross-punch in highly trained amateur boxers leg strength impact on cross-punch force. J Strength Cond Res XX(X): 000-000, 2024-The purpose of this study was to determine the impact of leg strength on force generation during the execution of a cross-punch by highly trained amateur boxers. This study involved 12 male, amateur boxers with a body mass range of 64.5-112.2 kg and a mean of 89.2 ± 17.0 kg. This study used an isokinetic dynamometer to measure the peak torque of the knee extensor and flexor muscles at 60°/s. The force plate was used to collect three-dimensional ground reaction forces (GRF), moments (GRM), and the center of pressure (COP) during a maximal cross-punch. The Kiktest-100 system was used to determine the force of the punch, while the Hykso punch tracker accelerometer measured the maximum fist velocity. This study revealed a positive correlation between knee extensor strength and GRFz, GRFy, and COPy during punch performance. In addition, the GRMz gradient and GRMz impulse during the execution phase have a significant positive effect on cross-punch force. In conclusion, the force of a straight punch in highly trained, amateur boxers is related to a greater angular velocity about the vertical axis during body rotation.

Prediction of Accident Risk Levels in Traffic Accidents Using Deep Learning and Radial Basis Function Neural Networks Applied to a Dataset with Information on Driving Events

A complex AI system must be worked offline because the training and execution phases are processed separately. This process often requires different computer resources due to the high model requirements. A limitation of this approach is the convoluted training process that needs to be repeated to obtain models with new data continuously incorporated into the knowledge base. Although the environment may be not static, it is crucial to dynamically train models by integrating new information during execution. In this article, artificial neural networks (ANNs) are developed to predict risk levels in traffic accidents with relatively simpler configurations than a deep learning (DL) model, which is more computationally intensive. The objective is to demonstrate that efficient, fast, and comparable results can be obtained using simple architectures such as that offered by the Radial Basis Function neural network (RBFNN). This work led to the generation of a driving dataset, which was subsequently validated for testing ANN models. The driving dataset simulated the dynamic approach by adding new data to the training on-the-fly, given the constant changes in the drivers’ data, vehicle information, environmental conditions, and traffic accidents. This study compares the processing time and performance of a Convolutional Neural Network (CNN), Random Forest (RF), Radial Basis Function (RBF), and Multilayer Perceptron (MLP), using evaluation metrics of accuracy, Specificity, and Sensitivity-recall to recommend an appropriate, simple, and fast ANN architecture that can be implemented in a secure alert traffic system that uses encrypted data.

Hybrid ventilation in a nearly zero-energy building as a function of users’ habits for better indoor air quality and thermal comfort in a warm climate

ABSTRACT During the design stage of a detached house located in warm climate, passive strategies were integrated and a high-energy efficiency qualification was achieved in accordance with the Spanish Building Technical Code (CTE). During the execution phase, an elevated level of control was carried out to guarantee airtightness and thermal insulation quality according to the specifications of the project. A hybrid ventilation system was designed and installed as it was allowed under Spanish regulations for residential buildings, but as a legislative exception. The mechanical part of the hybrid ventilation system was deactivated by the owner due to his cultural perception that effective ventilation can only be achieved by opening windows. Consequently, with the operable aerators closed, ventilation relied solely on traditional Mediterranean airing habits, impacting both the indoor air change rate and subsequently, indoor air quality and thermal comfort. This research aims to assess whether satisfactory levels of thermal comfort and indoor air quality can be attained solely through these airing habits, thus questioning the necessity of active strategies to meet the indoor air change rate requirements. Thermal comfort and indoor air quality are evaluated based on indoor environmental data correlated with users’ declared ventilation habits.

Leveraging the teamwork model for effective integration of interactive materials on mobile devices in visual media communication, innovation, and impact on society

The issue of waste in printed materials can be effectively addressed by leveraging technology, especially mobile devices, in language learning initiatives. This research focuses on integrating interactive materials through the TEAMWORK model, with the ELENE project serving as a case study. The overarching goal is to assess how the TEAMWORK model can streamline planning and execution in mobile-assisted language learning endeavours. By evaluating effectiveness, identifying challenges and best practices, and offering practical recommendations, this study aims to improve language education outcomes through technology integration while reducing the environmental impact associated with traditional printed materials. The research methodology involves a thorough examination of integrating interactive materials on mobile devices using the TEAMWORK model, with a specific focus on the ELENE project. It commences with a comprehensive literature review and progresses to qualitative data collection through interviews and observations. The TEAMWORK model serves as a guiding framework for planning and execution, with data gathered through surveys and usage analytics. Analysis techniques are employed to evaluate the model’s impact on project outcomes and to derive practical recommendations for stakeholders, all aimed at enhancing language education practices and technology integration. The research results highlight the effectiveness of integrating interactive materials on mobile devices using the TEAMWORK model, as evidenced by the ELENE project. Qualitative analysis revealed that the structured approach provided by the TEAMWORK model significantly improved planning and execution phases, leading to better project outcomes and increased learner engagement. Quantitative data further corroborated these findings, demonstrating measurable enhancements in language proficiency and user satisfaction. Challenges such as technical constraints and resource limitations were effectively managed through proactive risk mitigation strategies outlined by the model. Overall, the results underscore the value of the TEAMWORK model in optimizing mobile-assisted language learning initiatives and offer valuable insights for stakeholders involved in similar endeavours. The integration of interactive materials on mobile devices, guided by the TEAMWORK model within the ELENE project, has significantly improved language learning outcomes. Through structured planning and execution, the TEAMWORK model effectively enhanced project outcomes and increased learner engagement. Practical implications include actionable recommendations for stakeholders involved in similar projects, offering insights for maximizing the effectiveness of technology integration in language education.

A proposed quality control process for front-end planning to minimize risk of field change orders in underground electrical construction

Controlling capital costs and cost overruns due to construction field change orders (FCOs) is essential for the electric power industry to provide affordable energy services. Conversion from overhead to underground systems due to security and climate change factors will increase the risk of FCOs due to site conditions. The failure in collaboration by front-end planning (FEP) teams can increase risk of FCOs due to missing scopes, errors in design, lack of existing field condition evaluation, constraints on the project schedule, or unexpected field conditions, among other causes. This study involved development of a quality control process that enables members of the FEP team to vote their confidence levels about risk control of FCOs before proceeding to final design. The proposed process utilized Analytical Hierarchy Process (AHP) methodologies to distribute the weights of stakeholder votes based on responsibilities for each category of FCOs to obtain an integrated metric of FEP team confidence. Data from an operational electric power utility was used to provide a case scenario approach and to illustrate the method. Three actual projects were analyzed to assess how well the process would have worked for them. The novelty of the proposed model is to enhance the effectiveness of collaborative working relationships across teams during the FEP process and to provide a quality control metric to capture risk of FCOs in the early phase to minimize cost overruns in the project execution phase.

WOMEN’S ENGAGEMENT IN SOIL AND WATER CONSERVATION: A RESEARCH PERSPECTIVE

The sustenance of life on earth relies heavily on essential natural resources such as soil and water, integral components of the environment. The conservation and management of these natural resources should be essential for survival of humankind. Women emerge as pivotal contributors to this conservation effort due to their traditional engagement with daily activities intimately connected to natural resources, fostering a reduction in waste and excessive consumption. Despite their significant role, governmental attention towards encouraging women’s involvement in natural resource conservation remains disproportionately minimal. In response to this gap, the study investigates the extent of women’s participation in soil and water conservation in Banaskantha district of Gujarat. A sample of 180 women respondents was randomly chosen for the study, and the quantitative data was carried out through the use of an interview schedule. The research indicates a moderate level of women’s engagement in soil and water conservation practices. Notably, women demonstrate the highest participation during the execution phase of soil conservation, while their involvement in planning and decision-making stages remains largely invisible. Similarly, in water conservation, women’s participation was notably lower not only during the planning phase but also in the execution phase. The study concludes by emphasizing the urgency for policy planners, government bodies, and other institutions to actively promote and encourage women’s participation in policy-making and planning processes. This can be achieved through targeted efforts such as additional exposure, awareness campaigns, and training programs. By enhancing the role of women in these critical aspects, society can harness their valuable insights and contributions towards ensuring the productive and efficient use of natural resources for the benefit of current and future generations.

Contextual expectations shape the motor coding of movement kinematics during the prediction of observed actions: A TMS study

Contextual information may shape motor resonance and support intention understanding during observation of incomplete, ambiguous actions. It is unclear, however, whether this effect is contingent upon kinematics ambiguity or contextual information is continuously integrated with kinematics to predict the overarching action intention. Moreover, a differentiation between the motor mapping of the intention suggested by context or kinematics has not been clearly demonstrated. In a first action execution phase, 29 participants were asked to perform reaching-to-grasp movements towards big or small food objects with the intention to eat or to move; electromyography from the First Dorsal Interosseous (FDI) and Abductor Digiti Minimi (ADM) was recorded. Depending on object size, the intentions to eat or to move were differently implemented by a whole-hand or a precision grip kinematics, thus qualifying an action-muscle dissociation. Then, in a following action prediction task, the same participants were asked to observe an actor performing the same actions and to predict his/her intention while motor resonance was assessed for the same muscles. Of note, videos were interrupted at early or late action phases, and actions were embedded in contexts pointing toward an eating or a moving intention, congruently or incongruently with kinematics. We found greater involvement of the FDI or ADM in the execution of precision or whole-hand grips, respectively. Crucially, this pattern of activation was mirrored during observation of the same actions in congruent contexts, but it was cancelled out or reversed in the incongruent ones, either when videos were interrupted at either early or long phases of action deployment. Our results extend previous evidence by showing that contextual information shapes motor resonance not only under conditions of perceptual uncertainty but also when more informative kinematics is available.

The Role of Data Science in Enhancing Project Management Practices: A Case Study in the Pharmaceutical Industry

Data science is altering the way in which we manage projects, starting from the planning stage through both execution and tracking phases. In this paper, an examination is made into the productivity and efficiency gains in project management due to the use of data science. It uses previous studies, practical samples and latest advancements to show how decisions based on data can influence the results of a project. Besides, there are two instances looked at concerning pharmaceutical projects. It concentrates on such important aspects of project realization as planning, resource allocation, risk management, requirement analysis, among others.

Empowering Educational Autonomy to Implement Kurikulum Merdeka in Madrasah

This study investigated the pivotal role of education management in the implementation of the Kurikulum Merdeka (KM) within Madrasah institutions. Grounded in Terry's management functions theory, the research discerns both the facilitating factors and obstacles encountered during the curriculum implementation. Employing qualitative methodologies, including interviews with madrasah heads, teachers, and students, alongside curriculum document analysis, the study unfolds crucial insights. The findings underscore the indispensable nature of effective education management across the phases of planning, execution, and evaluation of the KM Supportive elements encompass stakeholder engagement, provision of adequate facilities, and the adoption of flexible learning methodologies. Conversely, significant challenges emerge, such as the imperative for enhanced comprehension of KM and the necessity for gradual readiness in its implementation. This research extends its contribution by delineating actionable strategies to surmount these obstacles, thereby furnishing guidance for madrasahs and other educational institutions in navigating KM implementation. These insights hold promise for enhancing the efficacy of curriculum deployment at the madrasah level, while also paving the way for further exploration within the Indonesian educational landscape.

Innovating Library Services: Co-Creation, Experimentation, and Enhanced Business Value Tool for Technological Advancements

ABSTRACT This article provides entrepreneurs with information about library services and investigates the function of an Enhanced Business Value Calculator in identifying patrons who may be interested in participating in co-creation-driven experimental technology adoptions in libraries. By identifying the most productive users, the librarian could invite them to participate in the co-creation process, which results in more collaborative and knowledge-based technology experimentations. Patrons (high-performing users and their peers) actively participate in the design, execution, and post-experimentation phases of the experimentation process continuously through co-creation. Ongoing participation increases patron engagement, transforming patrons into library evangelists who support cooperative trials that result in novel services. The article culminates in a case study that shows how the public libraries in collaboration with the university library strategically experimented with ChatGPT to see if it might be used for its systematic literature review services for the entrepreneurs.

Self-Regulated Learning in Students Who Pass the SNBT Using E-Learning as a Learning Media

This study explores the effectiveness of self-regulated learning (SRL) in students who pass the SNBT using e-learning as a learning medium. SRL is a process in which students independently manage and maintain their cognitive, emotional, and motivational aspects to achieve predetermined learning goals. Passing the SNBT is an achievement that requires students' learning independence. This research utilized a qualitative method with 4 students who passed the SNBT using e-learning as respondents, selected through convenience sampling. Data were collected through semi-structured interviews, transcribed, and analyzed using thematic analysis. The results of the study indicate that students who used e-learning in SNBT preparation successfully passed the selection and entered the best state universities due to their ability to self-regulate through three phases of SRL: planning, execution, and reflection. E-learning helped students set learning goals, choose appropriate learning strategies, and manage time effectively. During the execution phase, students were active in the learning process and adjusted methods as needed. In the reflection phase, students evaluated learning outcomes and made improvements based on feedback. Students who applied SRL demonstrated high learning independence and motivation. These findings emphasize the importance of integrating technology in education to enhance students' effectiveness and academic success.

Strategic interventions for bridging the design-reality gap in property conferment rights: a case study of India’s ambitious initiative

PurposeThis research aims to assess how well the e-governance initiative aligns with its design expectations and on-ground realities for property management to redevelop Delhi, the mega-city of India. Additionally, the study proposes strategic interventions to address any gaps identified, aiming to improve the project’s effectiveness and success.Design/methodology/approachThe research employs a singular exploratory case study methodology to scrutinise the e-governance initiative undertaken by the Government of India to confer property rights. Specifically, the study utilises a qualitative research approach known as design-reality gap (DRG) analysis. The study draws from primary and secondary sources using a mixed-methods data collection strategy. Primary data are gathered through a purposeful and snowball sampling method involving direct engagement with respondents, whilst secondary data are sourced from the project portal.FindingsThe investigation reveals a substantial disparity between the planning and execution phases of e-governance projects. This incongruity predominantly manifests in the domains of process, staffing and skills, as well as objectives and values. The study further finds that strategic collaboration amongst stakeholders and the sustainability of decisions are the most critical factors in ensuring the success of e-governance initiatives and bridging the DRG of e-governance projects.Research limitations/implicationsThis research highlights the complex challenges faced by e-governance projects in technical, human and organisational aspects. The successful implementation and sustainability of these projects require effective strategies to overcome challenges, which management should proactively identify and act on. To improve services, beneficiaries should be encouraged to provide feedback and suggestions, as they play a crucial role in service enhancement. A dynamic feedback loop would be established by creating a two-way interaction between beneficiaries and service providers, leading to iterative service improvement. It is important to note that the study’s findings are more illustrative than conclusive due to the moderate sample size, reflecting its limitations.Originality/valueThe research contributes to the scholarly discourse on e-governance and policy implementation by comprehensively examining the alignment between conceptual design and real-world execution. It also introduces a normalised scale for the DRG framework, mapping its dimensions to deduce specific outcomes. This innovative approach enhances the research’s originality and value, offering insights applicable in both academic and practical domains.

Validação transcultural da ImpRes-Tool-BR: uma ferramenta para desenvolvimento de projetos e pesquisas de implementação

ABSTRACT This study aims to present the results of the translation, cross-cultural validation and preliminary evaluation of a tool, originally developed in the United Kingdom, to guide Brazilian researchers in the elaboration of projects and rigorous and high-quality implementation research: ImpRes-BR. Following currently established good practices for cross-cultural validation of instruments and scales, the tool, together with its user guide, was translated and back-translated, subjected to a pilot test with 20 health professionals and evaluated by a panel of 10 specialists who assigned the values used for the calculations of the Content Validity Index at the item level (CVI-I) and scale (CVI-E). In this process, in addition to conceptual validity indices greater than 90%, an IVC-I of at least 0.90 was observed in all domains of the tool and its guide, and an IVC-E of 0.98. Having established the validity of the tool and its guide, it was applied in 14 research projects in the planning or execution phase and was recognized as a powerful instrument for self-analysis of the teams in the qualification of their projects and strengthening them in relation to the principles of the Implementation Science.

Intermunicipal cooperation in public procurement

ABSTRACT This study evaluates the impact of intermunicipal cooperation on public procurement (PP) performance, based on the Italian experience. We use both a fixed-effects regression model and alternative matching estimators to analyse a sample of 50,905 Italian public works contracts awarded by municipalities and municipal unions (MUs) between 2012 and 2020. Our results indicate that while local centralisation does not necessarily lead to significant cost savings in the procurement phase, MUs outperform individual municipalities in the execution phase, especially in terms of reducing delivery delays. We conclude that while MUs do not necessarily lead to strong economies of scale, they do improve efficiency during contract execution. This highlights the alternative benefits of PP centralisation beyond cost savings.

Polystyrene nanoplastics as an ecotoxicological hazard: cellular and transcriptomic evidences on marine and freshwater in vitro teleost models

The contamination of marine and freshwater environments by nanoplastics is considered a global threat for aquatic biota. Taking into account the most recent concentration range estimates reported globally and recognizing a knowledge gap in polystyrene nanoplastics (PS-NPs) ecotoxicology, the present work investigated the harmful effects of 20 nm and 80 nm PS-NPs, at increasing biological complexity, on the rainbow trout Oncorhynchus mykiss RTG-2 and gilthead seabream Sparus aurata SAF-1 cell lines. Twenty nm PS-NPs exerted a greater cytotoxicity than 80 nm ones and SAF-1 were approximately 4-fold more vulnerable to PS-NPs than RTG-2. The engagement of PS-NPs with plasma membranes was accompanied by discernible uptake patterns and morphological alterations along with a nuclear translocation already within a 30-min exposure. Cells were structurally damaged only by the 20 nm PS-NPs in a time-dependent manner as indicated by distinctive features of the execution phase of the apoptotic cell death mechanism such as cell shrinkage, plasma membrane blebbing, translocation of phosphatidylserine to the outer leaflet of the cell membrane and DNA fragmentation. At last, functional analyses unveiled marked transcriptional impairment at both sublethal and lethal doses of 20 nm PS-NPs, with the latter impacting the “Steroid biosynthesis”, “TGF-beta signaling pathway”, “ECM-receptor interaction”, “Focal adhesion”, “Regulation of actin cytoskeleton” and “Protein processing in endoplasmic reticulum” pathways. Overall, a distinct ecotoxicological hazard of PS-NPs at environmentally relevant concentrations was thoroughly characterized on two piscine cell lines. The effects were demonstrated to depend on size, exposure time and model, emphasizing the need for a comparative evaluation of endpoints between freshwater and marine ecosystems.