Wyniki wyszukiwania - BazTech

1

Comparative analysis of study results on e-commerce customer preferences in last-mile delivery in Poland

Witkowski Jarosław, Skowrońska Agnieszka, Cheba Katarzyna, Baraniecka Anna

Gospodarka Materiałowa i Logistyka

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2024

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nr 1

15--27

EN

The main aim of the paper is a comparative analysis of the research results presented in four research projects on e-customer preferences in last-mile delivery conducted recently on the Polish e-commerce market as: Gemius Poland, PostNord and Łukasiewicz Research Network – Institute of Logistics and Warehousing Network, and own research financed by Polish National Science Center under the title "Sustainable last-mile logistics and e-commerce returns. Perspective of various stakeholder groups". E-customers in Poland are mainly guided by price, safety and delivery service standards; trust in the supplier is also important. Interestingly, in the context of the development of pro-ecological trends, it is still of minor importance for Polish e-customers whether the delivery is environmentally-friendly, including whether it is possible to return the goods in an "environment-friendly" manner. A comparative analysis of research projects regarding e-customer preferences allows to identify similarities and differences in the scope of research results, identify a cognitive gap, and define directions and recommendations for further e-customer market research. The results obtained may also contribute to the formulation of recommendations for e-commerce and logistics companies regarding e-customer preferences for last-mile delivery to increase customer satisfaction, improve efficiency, and create competitiveness.

PL

Głównym celem artykułu jest analiza porównawcza wyników badań dotyczących rynku e-commerce przedstawionych w czterech projektach badawczych zrealizowanych przez takie instytucje, jak: Gemius Polska, PostNord oraz Sieć Badawcza Łukasiewicz – Instytut Logistyki i Magazynowania oraz badań własnych autorów finansowanych przez Narodowe Centrum Nauki w ramach projektu „Zrównoważona logistyka ostatniej mili a zwroty w e-commerce. Perspektywa różnych grup interesariuszy”. E-klienci w Polsce kierują się głównie ceną, bezpieczeństwem i standardami obsługi dostawy, ważne jest także zaufanie do dostawcy. Co ciekawe, w kontekście rozwoju trendów proekologicznych dla polskich e-klientów wciąż niewielkie znaczenie ma to, czy dostawa jest przyjazna środowisku oraz czy istnieje możliwość zwrotu towaru w „ekologiczny” sposób. Analiza porównawcza projektów badawczych dotyczących preferencji e-klientów pozwala wskazać podobieństwa i różnice w zakresie wyników badań, zidentyfikować lukę poznawczą oraz określić kierunki i rekomendacje dla dalszych badań rynku e-klientów. Uzyskane wyniki mogą również przyczynić się do sformułowania rekomendacji dla firm e-commerce oraz logistycznych, dotyczących preferencji e-klientów w zakresie dostaw ostatniej mili w celu zwiększenia satysfakcji klientów, poprawy efektywności i budowania konkurencyjności.

2

Urban garden as a water reservoir in an urban area – a literature review

Setiawan Wawan, Gawryszewska Beata

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2023

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Vol. 32, No. 3

221--237

EN

The aim of the presented work was to show that contemporary researchers recognize the potential of urban gardening in improving urban retention, and that the contemporary scientific literature mentions specific problems-indicators of retention that can be useful for developing guidelines for authorities and gardeners on the management and development of urban gardens, such as allotments and community gardens, considering their role as a retention tool. In this study, a meta-analysis of peer-reviewed scientific articles from popular scientific databases such as Web of Sciences, Science Direct, Springer and MDPI was performed, which was, besides literature analysis, the main method of research. Definitions of urban garden retention indicators were developed, which are: rainwater/stormwater infrastructure (collecting rainwater water – special infrastructure); watering systems (system for providing water strait to plants); planting type (garden plants: flowers, vegetables, fruits, herbs on beds – no turf: lawn or turf with dicotyledonous plants). The most frequent groups of indicators in the articles were also identified. The study also analyzed the distribution of surveyed articles between continents, noting the overrepresentation of articles from North America and the absence of articles from South America.

3

Airborne Bacteria from Wastewater Treatment and Their Antibiotic Resistance: A Meta-Analysis

Banchón Carlos, Vivas Teresa, Aveiga Ana, Díaz Linda

Journal of Ecological Engineering

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2021

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Vol. 22, nr 10

205--214

EN

The treatment of domestic and industrial wastewater is a source for a large number of airborne microorganisms, which can be released at the environment during mechanical aeration. A meta-analysis of up to 14 industrial and municipal treatment plants was performed to determine the bacterial count in bioaerosols, as well as antibiotic resistance, at different stages of the wastewater treatment (pretreatment, primary, secondary and tertiary treatment), in comparison with bacterial counts of the ambient air surrounding the treatment plants. The highest contamination of the air with microorganisms was observed in the raw sewage inlet and at the biological reactor. In most analyzes, the air in the wastewater treatment plant was characterized by a higher content of microorganisms than at the control point. Bioaerosols from water treatment might be an important source of antibiotic resistance genes, which can be transported considerable distances and can represent a potential risk to humans. Therefore, employees should recognize the health risks associated with the absence of personal protective equipment, such as masks or respirators.

4

Systematic review and meta-analysis of surgical suture strength according to the type, structure and geometry of suture materials

Andryszczyk Marek, Topoliński Tomasz

Acta of Bioengineering and Biomechanics

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2021

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Vol. 23, no. 4

191--200

EN

Purpose: As a rule, wound healing is a natural and spontaneous process. However, in acute or surgical wounds, the wound edges need to be approximated and held together by artificial means. Surgery within the abdominal cavity or elsewhere almost always involves cutting through the skin, after which a medical procedure is conducted, followed by wound closure. The suture provides temporary mechanical support during the natural healing process of the affected tissues. Not only does it stimulate the primary wound healing, but also provides mechanical protection against wound dehiscence. Methods: This analysis is intended to juxtapose the basic factors that contribute to a change in suture strength and the possible failure of surgical sutures, which may affect the wound healing process and increase the risk of postoperative complications. Results: The preliminary search criteria used in the databases included keywords such as: “strength of suture materials”, “strength of surgical sutures”, “surgical knot strength”. Five key articles were ultimately selected from a pool of 336 articles first identified based on these search criteria. Next, a meta-analysis of the literature data was performed, taking into account factors such as the type of suture materials used, biological conditions and model conditions used in research, having a significant impact on the mechanical properties of surgical sutures. Conclusions: This comparison revealed considerable variations in the suture strength between different sutures of the same size, it also demonstrated that the decrease in suture strength strongly depends on the finished suture and the thread type.

5

Skull stripping using traditional and soft-computing approaches for magnetic resonance images : a semi-systematic meta-analysis

Humera Azam, Humera Tariq

Machine Graphics and Vision

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2020

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Vol. 29, No. 1/4

33--53

EN

MRI scanner captures the skull along with the brain and the skull needs to be removed for enhanced reliability and validity of medical diagnostic practices. Skull Stripping from Brain MR Images is significantly a core area in medical applications. It is a complicated task to segment an image for skull stripping manually. It is not only time consuming but expensive as well. An automated skull stripping method with good efficiency and effectiveness is required. Currently, a number of skull stripping methods are used in practice. In this review paper, many soft-computing segmentation techniques have been discussed. The purpose of this research study is to review the existing literature to compare the existing traditional and modern methods used for skull stripping from Brain MR images along with their merits and demerits. The semi-systematic review of existing literature has been carried out using the meta-synthesis approach. Broadly, analyses are bifurcated into traditional and modern, i.e. soft-computing methods proposed, experimented with, or applied in practice for effective skull stripping. Popular databases with desired data of Brain MR Images have also been identified, categorized and discussed. Moreover, CPU and GPU based computer systems and their specifications used by different researchers for skull stripping have also been discussed. In the end, the research gap has been identified along with the proposed lead for future research work.

6

Trust or doubt : accuracy of determining factors for supply chain performance

Pakurár Miklós, Benedek S. A., Popp József, Magda Róbert, Oláh Judit

Polish Journal of Management Studies

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2019

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Vol. 19, No. 1

283--297

EN

The aim of the research is to determine the accuracy of defining factors for supply chain performance. The most used factors in the literature are: sharing information, responding to challenges, cooperation among members, relationships, and trust. The method of the study is meta-analysis. Our results suggest that the effect of the examined factors on the performance is not complete, and the inclusion of other factors in later studies is indispensable because the results obtained indicate the presence of unknown influencing factors. The effect of the examined factors in the whole population is likely to be positive, but weak or moderate.

PL

Celem badań jest określenie dokładności definiowania czynników dla wydajności łańcucha dostaw. Najczęściej używane czynniki w literaturze to: dzielenie się informacjami, reagowanie na zapytania, współpraca między członkami, relacje i zaufanie. Metodą badania jest metaanaliza. Rezultaty studium sugerują, że wpływ badanych czynników na wydajność nie jest kompletny, a włączenie innych czynników do późniejszych badań jest niezbędne, ponieważ uzyskane wyniki wskazują na obecność nieznanych czynników wpływających. Wpływ badanych czynników na całą populację będzie prawdopodobnie pozytywny, ale słaby lub umiarkowany.

7

Does lean practices implementation impact on company performance? A meta-analytical research

Gonçalves Telma I. G., Sousa Paulo S. A., Moreira Maria R. A.

Management and Production Engineering Review

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2019

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Vol. 10, No. 4

11--24

EN

Studies linking the use of lean practices to company performance have been increasing as markets are becoming more competitive and companies are eager for reducing waste and therefore implementing the Lean Management (LM) philosophy to improve performance. However, results from these studies have found various and diﬀerent impacts and some light is needed. Extant literature was reviewed and, to achieve the research objective, a metaanalysis of correlations was carried out. The obtained results suggest a positive relationship between some lean practices and performance measures. Furthermore, the presence of moderators inﬂuencing the relationship between lean practices and performance outcomes is highlighted in our results. To our best knowledge, this is the ﬁrst research that proposes a comparison of results from primary studies on Lean implementation, by analysing the linear relationship between lean practices and enterprise performance. It ﬁlls this gap and therefore represents an important contribution.

8

Efficiency of Software Testing Techniques: A Controlled Experiment Replication and Network Meta-analysis

Gómez O. S., Cortés-Verdín K., Pardo C. J.

e-Informatica Software Engineering Journal

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2017

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Vol. 11, nr 1

77--102

EN

Background. Common approaches to software verification include static testing techniques, such as code reading, and dynamic testing techniques, such as black-box and white-box testing. Objective. With the aim of gaining a better understanding of software testing techniques, a controlled experiment replication and the synthesis of previous experiments which examine the efficiency of code reading, black-box and white-box testing techniques were conducted. Method. The replication reported here is composed of four experiments in which instrumented programs were used. Participants randomly applied one of the techniques to one of the instrumented programs. The outcomes were synthesized with seven experiments using the method of network meta-analysis (NMA). Results. No significant differences in the efficiency of the techniques were observed. However, it was discovered the instrumented programs had a significant effect on the efficiency. The NMA results suggest that the black-box and white-box techniques behave alike; and the efficiency of code reading seems to be sensitive to other factors. Conclusion. Taking into account these findings, the Authors suggest that prior to carrying out software verification activities, software engineers should have a clear understanding of the software product to be verified; they can apply either black-box or white-box testing techniques as they yield similar defect detection rates.

9

Query Rewriting Based on Meta-Granular Aggregation

Wiśniewski P., Stencel K.

Fundamenta Informaticae

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2014

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Vol. 135, nr 4

537--551

EN

Analytic database queries are exceptionally time consuming. Decision support systems employ various execution techniques in order to accelerate such queries and reduce their resource consumption. Probably the most important of them consists in materialization of partial results. However, any introduction of derived objects into the database schema increases the cost of software development, since programmers must take care of their usage and synchronization. In this article we consider using partial aggregations materialized in additional tables. The idea is based on the concept of metagranules that represent the information on grouping and used aggregations. Metagranules have a natural partial order that guides the optimisation process. We present solutions to two problems. Firstly, we assume that a set of stored metagranules is given and we optimize a query. We present a novel query rewriting method to make analytic queries use the information stored in metagranules. We also describe our proof-of-concept implementation of this method and perform an extensive experimental evaluation using databases of the size up to 0:5 TiB and 6 billions rows. Secondly, we assume that a database workload is given and we want to select the optimal set of metagranules to materialize. Although each metagranule accelerates some queries, it also imposes a significant overhead on updates. Therefore, we propose a cost model that includes both benefits for queries and penalties for updates. We experiment with the complete search in the space of sets of metagranules to find the optimum. Finally, we empirically verify identified optimal sets against database instances up to 0:5 TiB with billions of rows and hundreds millions of aggregated rows.

10

Value of forest recreation. Meta-analyses of the European valuation studies

Giergiczny M., Valasiuk S., Salvo M., Signorello G.

Ekonomia i Środowisko

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2014

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nr 4

76--83

PL

Celem badania było oszacowanie zmiennych wpływających na korzyści rekreacyjne generowane przez ekosystemy leśne Europy. W tym celu zgromadzono badania rekreacyjne przeprowadzone w krajach europejskich w latach 1970-2012. Zgromadzona baza danych zawiera zarówno badania preferencji ujawnionych, jak i preferencji deklarowanych. Łącznie zgromadzono 53 badania, z ośmiu krajów, które zawierają 252 indywidualnych oszacowań. Badania zostały przeprowadzone na terenie 73 różnych kompleksów leśnych na łącznej próbie ponad 40 000 osób. Dokonano tak zwanej metaanalizy, w której zmienną zależną jest gotowość do płacenia (WTP) lub nadwyżka konsumenta na osobę (CS). W badaniu podjęto próbę wyjaśnienia zmienności w WTP (CS) za pomocą zmiennych metodologicznych charakteryzujących badanie oraz charakterystyk badanych obiektów – w tym przypadku charakterystyk odwiedzanych lasów. Przeprowadzona analiza wskazuje, że ceteris paribus lasy, położone na terenie parków narodowych, dostarczają wyższych korzyści rekreacyjnych, a badania przeprowadzone w późniejszym latach związane są z wyższym poziomem nadwyżki konsumenta. Wynik ten może wskazywać, że preferencje konsumentów zmieniają się w czasie i ludzie osiągają coraz to wyższe (w ujęciu realnym) korzyści rekreacyjne z tytułu wizyt w lesie.

11

Possibilities of usage meta-analysis method in economic research area

Gondek A.

Management

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2013

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Vol. 17, no. 2

117--126

EN

The article presents the method of meta-analysis showing its essence, main elements, steps of carrying out research, as well as showing the advantages and disadvantages. In the support to available scientific bases of the source body of the literature, the author checked the economic studies, in which meta-analysis was used and divided them into twelve subject groups. Two group were the most numerous, they were: (1) macro-economics in such subject as development and growth economics, sustainable development, national accounts, public budgeting and finance and (2) management, especially about productivity, quality of human capital, organizational attitude, and widely understood competitiveness.

PL

Artykuł prezentuje metodę metaanalizy pokazując jej istotę, główne elementy, etapy prowadzenia badania, a także ukazując wady i zalety. W oparciu do dostępne w bazach naukowych źródła literaturowe dokonano przeglądu badań ekonomicznych, w których wykorzystano metaanalizę. Badania te przyporządkowano do dwunastu grup tematycznych. Dwie grupy były najbardziej liczne, były nimi: (1) badania makroekonomiczne w takich obszarach jak wzrost i rozwój ekonomiczny zagadnień z obszaru efektywności pracy, jakości kapitału ludzkiego, postaw wobec organizacji, a także szeroko rozumianej konkurencyjności.

12

Meta-analysis of dendrochronological dating of mass movements

Tumajer J., Treml V.

Geochronometria

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2013

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Vol. 40, no. 1

59-76

EN

Absolute dating of mass movements is crucial for disentangling possible release factors and determining the frequency of events. Here, we present an overview of a recent approach to den-drochronological dating of rockfalls, flows, landslides and avalanches. The results, based on 69 case-studies, show that methodological approaches to sampling and material processing differ considerably for different types of mass movements. Landslides are usually detected through abrupt growth chang-es and changes in stem eccentricity, whereas high-energy events as avalanches and flows are mostly identified by the formation of traumatic resin ducts, reaction wood, growth injuries and eccentricity changes. Cross-dating of dead wood is applicable as well. The dating of most mass movements except landslides is common, even with sub-annual resolution. In comparison to other methods of absolute dating, the main benefit of dendrochronology still lies in the high temporal resolution of the results. If living material is accessible, on-going research progress makes absolute dating of most mass-wasting events possible with sub-annual precision.

13

How to merge environmental information using meta-analysis

Zawadzki J.

Systemy Wspomagania w Inżynierii Produkcji

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2012

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z. 1 (1)

279--287

PL

Artykuł opisuje jak integruje się informację pochodzącą z różnych badań środowiskowych. Dla takich metod, które są specjalnie przeznaczone do łączenia rezultatów badań pochodzących z różnych źródeł ukuto w literaturze termin „meta-analiza”. Meta-analiza jest dużą rodziną stosunkowo zawansowanych i ciągle rozwijanych metod, które przekraczają znacznie możliwości klasycznych metod integracji danych np. opartych na analizie korelacji lub regresji. Zagadnienie to jest bardzo ważne w praktyce badań środowiskowych, kiedy dostępnych jest wiele szczegółowych rezultatów niezależnych badań, np. pochodzących od różnych zespołów naukowych, wykonywanych w różnym czasie, w wyniku różnych kampanii pomiarowych, na próbach o różnej liczebności itd., które należy właściwie uogólnić w celu uzyskania pewnych i precyzyjnych wniosków.

14

Echinoids as substrates for encrustation : review and quantitative analysis

Borszcz T.

Annales Societatis Geologorum Poloniae

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2012

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Vol. 82, No. 2

139-–149

EN

The existing literature, including records of both fossil and extant echinoid encrustation, is quantitatively analysed and reviewed. This shows that echinoid encrustation (number of encrusted echinoid taphocoenoses) has increased nearly continuously and dramatically to the present day, as confirmed by linear regression values of more than 85 per cent. It also demonstrates that current levels of echinoid fouling stabilised by the Miocene, while there has been a more or less continuous record of echinoid encrustation since the Late Cretaceous. Several increases have been identified since echinoid encrustation first noted occurrence from the Late Carboniferous. This trend is explained as the probable result of corresponding increases in productivity (richness, biomass, energetics, ecospace utilisation) and resources in the marine environment, including epibionts and their hosts. This conclusion matches other indicators, including the number and thickness of shell beds, bioerosion and predation intensity or biodiversity. The trajectory might have been altered to some degree by biases (e.g. selective recording, sampling effort, outcrop area, rock volume) in the same way as palaeobiodiversity estimates. Two recognised long-term gaps in echinoid encrustation (Upper Ordovician–Lower Carboniferous and Permian–Lower Cretaceous) are explained in part as bias and as biological and taphonomic signals. These gaps are caused mostly by the rapid disarticulation of Palaeozoic-type echinoids, the methodology applied here, and a lack of interest in the encrustation of Jurassic echinoids. Conversely, three short-term gaps in the Cenozoic are interpreted exclusively as bias. If correct, the present study demonstrates quantitatively the step-wise increase of productivity through time. It also suggests potential focus on further study, including the collection of new data from the field and pre-existing collections, as best for other encrustation proxies (e.g., percent of coverage by epibionts, ratio of encrusted to nonencrusted shells, taxa richness or numerical abundance of sclerobionts) in cases of large-scale analyses.

15

Meta-analysis of the effects of soil warming on soil respiration in forest ecosystems

Sun J., Peng C., Onge B., Berninger F., McCaughey H., Lei X.

Polish Journal of Ecology

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2011

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Vol. 59, nr 4

709-715

EN

No consensus has emerged on the sensitivity of soil respiration to increasing temperatures under global warming due partly to the lack of data and unclear feedbacks. Our objective was to investigate the general trends of warming effects on soil respiration. This study used meta-analysis as a means to synthesize data from eight sites with a total of 140 measurements taken from published studies. The results presented here suggest that average soil respiration in forest ecosystems was increased approximately by 22.5% with escalating soil temperatures while soil moisture was decreased by 16.5%. The decline in soil moisture seemed to be offset by the positive effects of increasing temperatures on soil respiration. Therefore, global warming will tend to increase the release of carbon normally stored within forest soils into the atmosphere due to increased respiration.

16

Life History Strategies Of Fish : Patterns In Growth And Lifespan Of Rudd Scardinius Erythrophthalmus (L.) In Europe

Tarkan A., Lappalainen J., Nurminen L., Horppila J.

Polish Journal of Ecology

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2010

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Vol. 58, nr 1

191-196

EN

Variation in life history strategies of rudd Scardinius erythrophthalmus (L.) in Europe was evaluated based on published sources. The growth and lifespan were analysed as the main variables in life strategies of any fish. The results revealed that total length (TL) at age 1 year was correlated with latitude and faster growth during the first growing season leads to a shorter lifespan in Europe. Variation in length at age 1 year was more pronounced in southern (40-46[degress]N: mean TL = 84.6 mm, SD = 27.2, n = 9) than in northern populations (49-61[degress]N: mean TL = 46.4 mm, SD = 4.2, n = 10). Thus, rudd can show different life history strategies in southern populations whereas in northern populations these options are few.

17

Job satisfaction, organizational commitment and job performance - partial meta - analysis

Gondek A., Mazur K.

Management

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2010

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Vol. 14, no 1

143-157

EN

The paper presents a partial meta-analysis. The examined variables were: job satisfaction, organizational commitment and job performance. The analysis was conducted on the basis of 54 research. The correlations between job satisfaction and organizational commitment and between organizational commitment and job performance were confirmed. The correlation between job satisfaction and job performance was not confirmed.

PL

Przeprowadzono częściową metaanalizę w zakresie zależności pomiędzy satysfakcją z pracy, zaangażowaniem organizacyjnym oraz wydajnością pracy. Badania oparto na 54 wynikach badań. Potwierdzono korelacje pomiędzy satysfakcją z pracy oraz zaangażowaniem organizacyjnym i pomiędzy zaangażowaniem organizacyjnym oraz wydajnością pracy. Nie potwierdzono korelacji pomiędzy satysfakcją z pracą a wydajnością z pracy.

18

Meta-analysis applied in estimating diagnostic accuracy from multiple conflicting reports

Klimek K.

Journal of Applied Computer Science

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2002

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Vol. 10, nr 2

67-76

EN

Reports of diagnostic accuracy often differ. Meta-analysis is a method of summarizing discrepant data on the accuracy of diagnostic tests. It uses logistic transformation and linear regression to produce a summary receiver operating characteristic curve (SROC).

19

International Comparison of Occupational Safety and Health Research - A Review Based on Published Articles

Brueggmann M., Roetting M., Luczak H.

International Journal of Occupational Safety and Ergonomics

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2001

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Vol. 7, No. 4

387--401

EN

A comparison of international literature in occupational safety and health (OSH) research over the years from 1980 to 1998 was conducted. The comparison is based on the different languages of the over 35,000 articles, which were collected from different databases. The distribution of languages in the analyzed data has to be considered carefully with respect to the original purpose of the data collection and the specific role of the international publication language, English. The comparison shows that in several aspects OSH research does not differ in different publication languages. In some methodological aspects, and in specific objects of research, differences between articles published in different languages can be found.