scholarly journals Estructura de la Comunidad de Peces de la Laguna Mecoacán, Tabasco

2020 ◽  
Vol 2 (1) ◽  
pp. 1-18
Author(s):  
R. Hernández-Ojendi ◽  
L.A. Ayala-Pérez ◽  
A. Esquivel-Herrera ◽  
B.I. Vega-Rodríguez
Keyword(s):  
Dominant Species ◽  
Fish Community ◽  
Environmental Variability ◽  
Average Weight ◽  
Relative Importance ◽  
Economic Role ◽  
Importance Index ◽  
Abundance And Diversity ◽  
Ecological Dominance ◽  
Key Indicators

The fish community of the Mecoacan lagoon plays a main ecological and economic role in the coastal zone of the Gulf of Mexico since they are key indicators of the health of aquatic ecosystems, maintain a flow and ex-change of energy with other systems and offer various ecosystem services. Because of the scarcity of studies on the structure of the fish community, the objective of this study was to describe and analyze the abundance and diversity of ichthyofauna to determine the ecological interactions of fish with environmental variability. Three sampling campaigns were conducted (January, May and September 2018), in 10 sampling sites. In each site, the environmental variables and ichthyological collections were carried out with a trawl net. The abundance was calculated as density (ind/m2), biomass (g/m2), and average weight (g/ind). The different components of diversity were determined by Shannon y Weaver (H’n), Margalef (DMg) and Pielou (J ‘) index. The dominant species were identified through the Relative Importance Index. A total of 853 fish were collected grouped into 12 orders, 17 families, and 27 species with a total combined weight of 10.9 kg. The range of variation of density was 0.12-0.26 ind/m2, of biomass 1.17-3.4 g/m2 and average weight 9.21-15.42 g/ind. The highest abundance stands out in January and sites 2, 3 and 4. On a temporal scale, greater diversity and equity were observed in the rainy season, and on a spatial scale, site 9 stood out for presenting greater diversity and species richness. 10 species with ecological dominance were identified being Cathorops aguadulce, Diapterus rhombeus, and Opsanus beta those with the highest values for the relative importance index. The cluster analysis associated two groups of species and through an analysis of canonical correspondence the abundance of two groups of fish was correlated with the temperature and dissolved oxygen. Keywords: abundance, diversity, ichthyofauna, dominant species.

scholarly journals Diversity and seasonal changes in the ichthyofauna of rocky tidal pools from Praia Vermelha and São Roque, Santa Catarina

2004 ◽  
Vol 47 (2) ◽  
pp. 291-299 ◽  
Author(s):  
João P. Barreiros ◽  
Áthila Bertoncini ◽  
Leonardo Machado ◽  
Maurício Hostim-Silva ◽  
Ricardo Serrão Santos
Keyword(s):  
Seasonal Changes ◽  
Dominant Species ◽  
Fish Community ◽  
Santa Catarina ◽  
Tidal Pool ◽  
Abundance And Diversity ◽  
Tidal Pools

A survey of the tidal pool fish community was carried out between April 1998 and May 1999, at the beaches of Praia Vermelha (PV) and São Roque (SR), Santa Catarina, Brazil. The pool of PV was bigger and closer to the subtidal. Specimens were collected monthly at low tide, using quinaldine. In PV we collected 1287 fish belonging to 19 species and in SR 553 fish were caught corresponding to 11 species. In both pools, dominant species were Bathygobius soporator (Gobiidae), Abudefduf saxatilis (Pomacentridae), Parablennius pilicornis (Blenniidae), Gobiesox barbatulus (Gobiesocidae), Labrisomus nuchipinnis (Labrisomidae) and Epinephelus marginatus (Serranidae). Summer months had higher abundance and diversity values, and correspond to a recruitment season for both A. saxatilis and E. marginatus.

Causes of Delay in Budget Hotel Construction Projects

2014 ◽  
Vol 5 (3) ◽  
pp. 49-63 ◽  
Author(s):  
Milind T. Phadtare
Keyword(s):  
Construction Projects ◽  
Business Group ◽  
Relative Importance ◽  
Joint Effort ◽  
Indian Context ◽  
Importance Index ◽  
Project Participants ◽  
Causes Of Delays ◽  
Industry Training

Delay in construction projects is a universal phenomenon. However, the topic is not adequately studied in the Indian context. This paper attempts to identify the causes of delays in construction of budget hotels in India and suggest remedies to avoid some delays. A business group constructing budget hotels across the country is approached for this study. Forty causes of delay have been identified and Relative Importance Index was calculated. The contribution of each category of causes of delay to overall delay in the projects was computed. Remedies such as, joint effort of the participants of the industry, training, coordination between project participants and project timing and scheduling are suggested and validated.

A benchmarking approach to the progress of green materials and systems’ use in the UAE construction industry

2016 ◽  
Vol 13 (4) ◽  
pp. 315-327 ◽  
Author(s):  
Aly Elgayar ◽  
Salwa Mamoun Beheiry ◽  
Alaa Jabbar ◽  
Hamad Al Ansari
Keyword(s):  
Construction Industry ◽  
United Arab Emirates ◽  
Design Methodology ◽  
Construction Materials ◽  
Relative Importance ◽  
Content Type ◽  
The Past ◽  
Green Materials ◽  
Importance Index ◽  
Regulatory Guidelines

Purpose Over the past decade, the United Arab Emirates (UAE) introduced several green regulatory guidelines, federal decrees, and a considerable number of environmentally friendly initiatives. Hence, the purpose of this paper is to investigate the top green materials and systems used currently in the UAE construction industry as per the new laws dictate as well as see if professionals are switching over to incorporate more green materials, systems, and/or designs. Design/methodology/approach The work involved reviewing internationally popular green materials and systems for construction, developing a questionnaire based on the literature review, surveying professionals in the seven UAE emirates, and ranking the findings based on the relative importance index. Findings Findings found the top used green materials and system in the UAE’s construction industry. As well as identified that there is a communication gap between the design and implementation phases that is possibly hindering the use of more green materials and systems. Originality/value This study sets a baseline to measure the UAE’s progress over the coming years in terms of integrating more green construction materials, systems, methodologies, and trends.

scholarly journals Insights of project managers into the problems in project management

2016 ◽  
Vol 16 (1) ◽  
pp. 90-103 ◽  
Author(s):  
Peter Vincent Livesey
Keyword(s):  
Project Management ◽  
Delphi Study ◽  
Soft Skills ◽  
Project Managers ◽  
Delphi Panel ◽  
Relative Importance ◽  
Team Management ◽  
Management Skills ◽  
Hard Skills ◽  
Importance Index

A Delphi study using project managers who had managed projects in excess of $500 million was used to confirm the significance and frequency of problems resulting from the nature of projects. Using the results obtained from the Delphi study a ranking of the problems experienced in these projects was obtained by calculating a Relative Importance Index. Additionally, the Delphi panel members were asked their views concerning the need for traditional project management skills (hard skills) and team management skills (soft skills) as project size increased from below $50 million to over $500 million. A substantial increase in the need for both skills was indicated with the increase in the need for soft skills being the most significant.

scholarly journals Feeding habits of Cocobolo Andinoacara pulcher in the cienaga Grande de Lorica, Colombia

2016 ◽  
pp. 5189-5197
Author(s):  
Charles W Olaya-Nieto ◽  
Liquey Camargo-Herrera ◽  
Vanessa Díaz-Sajonero ◽  
Fredys F Segura-Guevara
Keyword(s):  
River Basin ◽  
Stomach Content ◽  
Feeding Habits ◽  
Frequency Of Occurrence ◽  
Relative Importance ◽  
Food Groups ◽  
Total Length ◽  
Length Relationship ◽  
Importance Index ◽  
Gut Length

ABSTRACTObjective. The feeding habits of Cocobolo (Andinoacara pulcher) in the cienaga Grande de Lorica, Sinu river basin, were studied. Materials and methods. The stomach content was analyzed using the Proportion of empty stomachs, Grade of digestion, Frequency of occurrence, numerical Frequency, Gravimetry, relative importance Index (RII) and the gut length-total length relationship. Results. 39.8% of stomachs were empty, 47.1% of preys were fresh and five food groups were identified. Vegetable remains was the most frequent group (63.8%) and the prey with greatest composition in weight (33.5%), while Rest of fishes was the most abundant group (34.7%). It was observed that in low and rising waters, fishes was the most consumed prey, while that in high and falling waters the most consumed prey was vegetable remains. Vegetable remains, detritus and fishes were food groups of secondary relative importance, while Insects and Others were circumstantial or incidental groups. Conclusions. The results achieved indicate that Cocobolo is a fish with omnivores feeding habits with a preference for fishes and vegetable remains. RESUMEN Objetivo. Se estudiaron los hábitos alimentarios de Cocobolo (Andinoacara pulcher) en la ciénaga Grande de Lorica, cuenca del río Sinú, Colombia. Materiales y Métodos. El contenido estomacal se evaluó con el Coeficiente de vacuidad, Grado de llenado, Grado de digestión, Frecuencia de ocurrencia, Frecuencia numérica, Gravimetría, Índice de importancia relativa y la relación longitud intestinal- longitud total. Resultados. El 39.8% de los estómagos se encontró vacío, el 47.1% de las presas en estado fresco y se identificaron cinco grupos alimentarios. Material vegetal fue el grupo más frecuente (63.8%) y con mayor composición por peso (33.5%), mientras que Restos de peces fue el más abundante (34.7%). Se observó que en aguas bajas y en aguas ascendentes, peces fue la presa más consumida, mientras que en aguas altas y aguas descendentes, fue material vegetal. Material vegetal, detritos y restos de peces fueron grupos alimentarios de importancia relativa secundaria, mientras que insectos y otros fueron circunstanciales o incidentales. Conclusiones. Los resultados alcanzados indican que Cocobolo es un pez de hábitos alimentarios omnívoros con preferencia por peces y material vegetal.

scholarly journals Faktor Penglibatan Pelajar dalam Aktiviti Bukan Akademik anjuran Universiti

2020 ◽  
Vol 5 (11) ◽  
pp. 85-94
Author(s):  
Nazriah Rasul ◽  
Rafiza Mohamed ◽  
Siti Nurhuda Abd. Wahid ◽  
Yusmady Md. Junus ◽  
Rosmiza Awang Noh
Keyword(s):  
Relative Importance ◽  
Kuala Lumpur ◽  
Importance Index

Aktiviti-aktiviti yang dianjurkan di universiti tidak kira akademik atau bukan akademik haruslah boleh membentuk pelajar yang seimbang bukan sahaja dari aspek jasmani dan emosi, malah dari aspek rohani dan intelek juga. Walau bagaimanapun, trend terkini pelajar adalah kurang melibatkan diri dalam aktiviti-aktiviti anjuran universiti Oleh itu kajian ini bertujuan untuk mengenal pasti faktor penglibatan pelajar dalam aktiviti bukan akademik anjuran universiti dan mengenal pasti langkah-langkah yang boleh diambil supaya lebih ramai pelajar melibatkan diri dalam aktiviti bukan akademik anjuran universiti. Ia dijalankan terhadap 888 orang responden daripada 5,534 pelajar diploma di Universiti Teknologi Malaysia Kuala Lumpur (UTMKL). Berdasarkan kepada keputusan analisa menggunakan kaedah Relative Importance Index (RII), faktor pengaruh rakan telah dikenal pasti sebagai faktor yang paling mempengaruhi penglibatan pelajar terhadap aktiviti bukan akademik anjuran universiti iaitu dengan nilai RII sebanyak 0.79. Manakala faktor yang paling kurang mempengaruhi pelajar menyertai aktiviti bukan akademik anjuran universiti ialah faktor personaliti pelajar dengan nilai RII sebanyak 0.59. Maklum balas daripada pelajar berkenaan dengan langkah-langkah yang boleh diambil supaya lebih ramai pelajar melibatkan diri dalam aktiviti bukan akademik anjuran universiti dianalisis menggunakan kaedah Analisa Bertema. Maklum balas pelajar telah dikelaskan kepada 6 tema iaitu penambahan aktiviti yang aktif dan menarik, penambahan infrastruktur oleh universiti, menambah baik saluran komunikasi pelaksanaan aktiviti, merancang pelaksanaan aktiviti, sokongan universiti dalam bentuk kewangan dan memberikan galakan dan motivasi. Hasil daripada kajian ini boleh diguna pakai dalam membuat perancangan aktiviti akademik di universiti bagi menarik lebih ramai pelajar melibatkan diri. Kajian seperti ini harus dijalankan pada masa akan datang. Perincian mengikut jenis aktiviti bukan akademik dan perbandingan mengikut jantina terhadap faktor-faktor yang mempengaruhi penglibatan pelajar terhadap aktiviti bukan akademik dapat membantu dalam menjelaskan dan memperincikan lagi penglibatan para pelajar dengan lebih menyeluruh.

scholarly journals Seasonal variation on diet of juvenile Elops saurus Linnaeus, 1766 (Ladyfish) in the Parnaiba River Delta

2020 ◽  
Vol 32 ◽  
Author(s):  
Tatiane Araujo Santos ◽  
Thamires Souza Gonçalves ◽  
Patricia Silva do Nascimento ◽  
Cézar Augusto Freire Fernandes ◽  
Francisca Edna de Andrade Cunha
Keyword(s):  
High Frequency ◽  
Rainy Season ◽  
Stomach Contents ◽  
Dry Season ◽  
River Delta ◽  
Frequency Of Occurrence ◽  
Relative Importance ◽  
Dry Period ◽  
Food Items ◽  
Importance Index

Abstract: Aim Identify seasonal variations in the diet of juvenile living in the estuary of the Parnaíba River Delta. Methods Food items were identified through analysis of stomach contents, and later submitted to analysis by regular methods for Frequency of Occurrence (FO), Frequency Numerical (FN), Gravimetric Frequency (FW) and Relative Importance Index (IRI). Results Juvenile diet of Elops saurus that inhabit the lagoons in the Parnaíba delta was composed in order decreasing of importance by Osteichthyes (Teleostei), Insecta and Crustacea in addition to Polychaeta and Nematoda. It was also observed a high frequency of occurrence of fragments of plastics in the diet. In the rainy season, 17 items were recorded in the diet, whereas in the dry season only 7 items were present. Relative Importance Index showed high presence of the Teleostei fish (69.93%) on diet of E. saurus during the rainy season, whereas during the dry period the insects of the families Corixidae (43.25%) and Dysticidae (39.16%). Conclusions With the study it was possible to identify that juvenile are piscivorous in the rainy season when there is a higher availability of prey in the environment and insectivores in the dry season when it reduces the supply of food, indicating feeding flexibility to environmental alterations.

Fire risk of apparel manufacturing buildings in Sri Lanka

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
R.M.D.I.M. Rathnayake ◽  
P. Sridarran ◽  
M.D.T.E. Abeynayake
Keyword(s):  
Sri Lanka ◽  
Fire Safety ◽  
Design Methodology ◽  
Safety Management ◽  
Fire Risk ◽  
Relative Importance ◽  
Apparel Manufacturing ◽  
Content Type ◽  
Importance Index ◽  
Indirect Impacts

Purpose The total essence of apparel manufacturing buildings (AMBs) is highly influenced by fire incidents which are caused direct or indirect impacts to the present building structure or even in old age. Hence, the purpose of this paper is to evaluate the fire risk of AMBs in Sri Lanka. Design/methodology/approach A literature review was conducted to explore the local and international fire incidents in AMBs and identify 24 factors that contribute to fire risk of AMBs. A questionnaire survey with professionals who have the knowledge and experience related to past fire incidents and 18 interviews with professionals of fire safety management were carried out. Content analysis was involved to evaluate interviewees’ opinions and relative importance index was involved to rank identified factors that contribute to the fire risk of AMBs. Findings The results revealed that due to the business nature of AMBs hold a high risk for fire incidents. The study discovered 83.4% of high fire risk prevailing in AMBs in Sri Lanka. Faulty wiring, welding work with electrical sparks and accumulation of waste fabric, paper and other garbage recognized as the top three factors that contribute to the fire risk of AMBs in Sri Lanka. Finally, the strategies proposed to eliminate identified all 41 factors that contribute to the fire risk of AMBs in Sri Lanka. Originality/value The paper helps to guide facility owners regarding the fire safety of AMBs in Sri Lanka.

BIOLOGICAL INVASIONS: THE EUROPEAN SMELT OSMERUS EPERLANUS (L.) AND THE MICROSPORIDIAN GLUGEA HERTWIGI WEISSENBERG, 1911

2021 ◽  
Vol 14 (4) ◽  
pp. 2-14
Author(s):  
L. V. Anikieva ◽  
E. P. Ieshko ◽  
O. P. Sterligova ◽  
Yu. S. Reshetnikov
Keyword(s):  
Dominant Species ◽  
Fish Community ◽  
Second Phase ◽  
Invasion History ◽  
Coregonus Albula ◽  
The Third ◽  
Third Phase ◽  
Population Outbreak ◽  
Osmerus Eperlanus ◽  
Latent Phase

The paper presents the phenomenology of the smelt Osmerus eperlanus and the microsporidian Glugea hertwigi invasion into a new habitat - Lake Syamozero (Karelia), where neither of the species occurred before. The invasion history falls into 4 phases. The first, latent phase started with a spontaneous invasion of the lake by smelt and lasted until the first fish showed up in catches (1968-1970). The second phase (1971 to 1980) was the invader number outbreak. The smelt became the dominant species in the fish community, while the native plankton-feeder, the vendace Coregonus albula, became an endangered species. The third phase (1980 to 1991) was the population outbreak of the microsporidian Glugea hertwigi, and development of an epizootic. The fourth phase (since 1991 until present) is the decreasing of the number of the invasive species - the smelt and the microsporidian Glugea hertwigi and the recovery of the native vendace population.

scholarly journals A Framework for the Improvement of Frugal Design Practices

Designs ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 37
Author(s):  
Ravindra Singh ◽  
Sumedha Seniaray ◽  
Prateek Saxena
Keyword(s):  
Cost Reduction ◽  
Distribution Analysis ◽  
Relative Importance ◽  
Design Practice ◽  
Cumulative Frequency Distribution ◽  
Frugal Innovation ◽  
Importance Index ◽  
The Cost ◽  
Discriminatory Effect

Current frugal design practice is focused on the cost reduction of the product. Despite advancements in the domain of frugal Innovation, it is not systematized to develop products for all sets of users, including marginalized society. Many design researchers and engineers now dedicate time and knowledge to producing practical solutions to enhance the quality of life of the marginal community. The approach currently being adopted restricts the development of products intended for all segments of the users. In this paper, cumulative frequency distribution analysis and the Relative Importance Index is used to identify the essential attributes, which contribute to delivering actual frugal products in terms of functionality, usability, performance, affordability, accessibility, aesthetics, and robustness. The framework is beneficial to eradicate the discriminatory effect of being labeled as “Jugaad” users.

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