initial study
Recently Published Documents





Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 663
Byungmo Kim ◽  
Jaewon Oh ◽  
Cheonhong Min

The key to coping with global warming is reconstructing energy governance from carbon-based to sustainable resources. Offshore energy sources, such as offshore wind turbines, are promising alternatives. However, the abnormal climate is a potential threat to the safety of offshore structures because construction guidelines cannot embrace climate outliers. A cosine similarity-based maintenance strategy may be a possible solution for managing and mitigating these risks. However, a study reporting its application to an actual field structure has not yet been reported. Thus, as an initial study, this study investigated whether the technique is applicable or whether it has limitations in the real field using an actual example, the Gageocho Ocean Research Station. Consequently, it was found that damage can only be detected correctly if the damage states are very similar to the comparison target database. Therefore, the high accuracy of natural frequencies, including environmental effects, should be ensured. Specifically, damage scenarios must be carefully designed, and an alternative is to devise more efficient techniques that can compensate for the present procedure.

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Peter Anzollitto ◽  
Danielle Cooper

PurposeAlthough research regarding socialization processes recognizes the importance of organizational identification for newcomer adjustment outcomes, it has less frequently considered the impact of newcomer identification with targets external to the organization. This study aims to investigate whether relational identification with identities external to the organization can be beneficial for socialization outcomes, a relationship the authors describe through the conservation of resources theory. At a time when newcomers are expending resources and may not have a support system inside the organization, important identities may foster success through building a resource base of support available to the newcomer.Design/methodology/approachTwo studies were conducted with newcomers, both groups responded to multi-wave surveys. The authors conducted an initial study with undergraduate students (n = 45) in their first semester of college and a second study with working individuals employed full time in their first year in a new organization (n = 148).FindingsRelational identification with identities external to the organization is positively related to job engagement through the dual mediation of social support and psychological well-being. The results indicate that these external resources encourage well-being and free newcomers to invest in becoming physically, emotionally and cognitively engaged with their new jobs.Practical implicationsThe results suggest that organizations may wish to take care in helping newcomers maintain strong relational identities outside the organization while becoming connected with their new organization.Originality/valueThe findings suggest that external relational identities are a neglected and important element influencing the socialization process.

Faisal Estu Yulianto ◽  
Noor Endah Mochtar ◽  
M. Ma'ruf Amin

Peat is a type of soil with high organic content, very low bearing capacity, and high uneven settlement. Some methods to improve soil have been applied to peat in order to make it strong enough for civilization-building foundation situated on it. Peat stabilization is a method that is continuously developed considering that the cost it needs is lower and this approach is more environmentally friendly compared to other methods. The admixture of lime (CaCO3) and Rice husk ash, a new ecofriendly stabilizer material, has been applied to peat soil and showed a good result. However, in studies conducted previously, the effect of water infiltration from surrounding areas of soil was stabilized was not involved as variable influencing the change of parameter. Based on that, this laboratory study was carried out to model the real condition in the field when the stabilization is performed and to identify the physical and engineering changes of peat soil in the 10th, 20th, and 30th days of stabilization in its border and middle parts, with the percentage of material stabilizer 5%, 10%, 15% and 20% of the unit weight of the initial condition of peat. The result of laboratory test shows that the addition of admixture of lime (CaCO3) and rice husk ash can improve the physical and engineering properties of peat soil are stabilized. Water infiltration occurred on peat soil is stabilized has not affected the physical and engineering properties of the soil. It can be seen from the physical and engineering properties of the border and central parts of peat soil is stabilized that still have a similar value. It is assumed to be caused by CaSiO3 gel formed still needs a longer duration to become stable gel. However, in this initial study it was known that the more stabilizers added, made the better the parameters of the stabilized peat soil.

2022 ◽  
Vol 1048 ◽  
pp. 524-530
Thanh Tran ◽  
Lam Van Giang ◽  
Ho Huu Loc ◽  
Le Thi Anh Hong ◽  
Van Doan Thi ◽  

Chemical fertilizers currently poison arable agriculture, so organic fertilizers are now a new trend for soil improvement. This study investigates the appropriate ratio of fertilizer use and materials mixed with sewage sludge in the anaerobic co-digestion treatment method, which will best support agriculture. In the study, bio-organic fertilizer was composted of the co-digestion anaerobic with sewage sludge and agricultural wastes such as rice husk, rice husk charcoal, water hyacinth, cassava peel, and then tested on rice. The specific criteria of fertilizers such as total organic (TOC), total nitrogen (TN), and effective phosphorus (P2O5) and plant growth parameters such as germination rate (%), tillering rate, total weight (g) were evaluated. Initial results show the untreated sludge can be impacted negatively on plant development. The concentration of nutrients in the co-digestion composts was meet the requirements of the Ministry of Agriculture’s standards of organic fertilizer. These bio-fertilizers will play an important role in soil productivity and sustainability. Hence, the widespread use of organic fertilizers from waste to partially replace chemical fertilizers will open up opportunities to reduce farming costs for farmers and develop agriculture sustainably.

2022 ◽  
Benjamin Allen ◽  
Lewis Cameron ◽  
Thomas R. Wainwright ◽  
Daniel J. Poole

2021 ◽  
Vol 17 (1) ◽  
pp. 21-32
Titi Surti Nastiti

Kerajaan-kerajaan masa Jawa Kuno dikenal sebagai negara agraris. Meskipun demikian tidak menjadikan kerajaan-kerajaan tersebut hanya bergerak di bidang pertanian saja, tetapi juga di bidang kemaritiman. Informasi yang menjelaskan kehidupan dan aktivitas kemaritiman pada masa Jawa Kuno didapatkan dari data arkeologis dan tekstual berupa prasasti, berita asing, dan naskah. Data tekstual yang dipakai sebagai sumber, umumnya dibagi ke dalam sumber primer dan sekunder. Sumber primer dianggap sebagai data yang lebih akurat dibandingkan dengan sumber sekunder, karena merupakan dokumen penting dan ditulis pada masanya. Data tekstual yang dianggap sebagai sumber primer adalah prasasti dan berita asing (tambo Dinasti Cina dan berita dari orang Eropa terutama Portugis), sedangkan yang dianggap sumber sekunder adalah naskah terutama karya sastra. Tujuan dari penulisan ini adalah mengungkapkan berbagai hal terkait aktivitas kemaritiman pada masa Jawa Kuno, terutama yang digambarkan dalam karya-karya sastra. Ternyata dalam karya sastra dari masa Kaḍiri-Majapahit banyak menuliskan tentang hal-hal yang berhubungan dengan kemaritiman, baik jenis perahu, perahu karam, bajak laut, maupun aktivitas masyarakat pesisir. Metode yang dipakai dalam penelitian ini adalah deskriptif analisis dengan pendekatan kualitatif. Hasil dari kajian ini memperlihatkan bahwa karya-karya sastra meskipun dianggap sebagai data sekunder, namun dari tulisan karya sastra terdapat kebenaran data yang tidak didapatkan dalam data primer. The kingdoms of the Old Javanese period were known as agrarian. However, this does not make these kingdoms only engaged in agriculture but also the maritime sector. Much information that contains maritime culture and activities during the Old Javanese period was acquired from various archaeological and textual data such as ancient inscriptions, foreign records, and texts. Textual data used as sources segmented into primary and secondary sources. Primary sources are considered more accurate than secondary sources because the primary sources record many events written at that time. Textual data that are considered primary sources are ancient inscriptions and foreign evidence such as the Chinese Dynasty tambo and European records, mostly Portuguese. Meanwhile, secondary sources such as ancient manuscripts, mainly ancient literary texts. This study aims to reveal various affairs related to maritime activities in the Old Javanese period, especially those expressed and portrayed in ancient literature. By the initial study, ancient literature from the Kaḍiri-Majapahit period contains many things related to maritime culture, both types of watercraft, shipwrecks, pirates, and the activities of the people who lived in the seacoast environment. The method used in this study is descriptive analysis with a qualitative approach. This study shows not much description of the maritime culture in Old Javanese inscriptions as the primary sources. However, it figures prominently in literary texts that contained many interesting facts. Historical information about maritime affairs in the Old Javanese period can be interpreted in more detail with supplementary information from literary texts as secondary sources.

2021 ◽  
Jane Hawkey ◽  
Kelly L Wyres ◽  
Louise M Judd ◽  
Taylor Harshegyi ◽  
Luke Blakeway ◽  

Background Resistance to third-generation cephalosporins, often mediated by extended–spectrum beta–lactamases (ESBLs), is a considerable issue in hospital-associated infections as few drugs remain for treatment. ESBL genes are often located on large plasmids that transfer horizontally between strains and species of Enterobacteriaceae and frequently confer resistance to additional drug classes. While plasmid transmission is recognised to occur in the hospital setting, the frequency and impact of plasmid transmission on infection burden, compared to ESBL+ strain transmission, is not well understood. Methods We sequenced the genomes of clinical and carriage isolates of Klebsiella pneumoniae species complex from a year long hospital surveillance study to investigate ESBL burden and plasmid transmission in an Australian hospital. Long term persistence of a key transmitted ESBL+ plasmid was investigated via sequencing of ceftriaxone resistant isolates during four years of follow–up, beginning three years after the initial study. Results We found 25 distinct ESBL plasmids. One (Plasmid A, carrying blaCTX–M–15 in an IncF backbone similar to pKPN–307) was transmitted at least four times into different Klebsiella species/lineages and was responsible for half of all ESBL episodes during the initial one-year study period. Three of the Plasmid A–positive strains persisted locally 3–6 years later, and Plasmid A was detected in two additional strain backgrounds. Overall Plasmid A accounted for 21% of ESBL+ infections in the follow–up period. Conclusions Whilst ESBL plasmid transmission events were rare in this setting, they had a significant and sustained impact on the burden of ceftriaxone resistant and multidrug resistant infections.

Peter Christian Endler

Introduction: Repeatability of experiments is an important criterion of modern research and a major challenge for homeopathic basic research. There is a lack of a recent overview about basic research studies in high homeopathic potencies that have been subjected to laboratory-internal, multicenter or independent repetition trials. Methods: We considered biochemical, immunological, botanical, cell biological and zoological studies on high potencies, i.e. beyond a dilution of 10-23. Main sources of information were reviews, personal contact with members of the homeopathic basic research community, and the MEDLINE and HOMBREX databases. Studies were extracted from the publications and grouped into models. Studies were further sorted according to repetition type (laboratory-internal, multicenter, or independent) and results achieved. Results: A total of 107 studies have been found. From these, 30 were initial studies. In the attempt to reproduce one of these initial studies, 53 follow up studies yielded comparable effects (35 laboratory-internal, 8 multicenter, 10 independent repetitions), eight studies showed a consistent, yet different result from the initial study (2 laboratory-internal, 2 multicenter, 4 independent repetitions), and 16 studies yielded zero effects (5 laboratory-internal, 2 multicenter, 9 independent repetitions). When all repetitive studies are considered, 69% reported effects comparable to that of the initial study, 10% different effects, and 21% zero effects. Independently performed repetition studies reported 44% comparable effects, 17% different effects, and 39% zero effects. Conclusions: We identified 24 experimental models in basic research on high homeopathic potencies, which were repeatedly investigated. 22 models were reproduced with comparable results, 6 models with different results, and repetition showed no results for 15 models. Independent reproductions with either comparable or different results were found for seven models. We encourage further repetition trials of published studies, in order to learn more about the model systems used and in order to test their repeatability

Sign in / Sign up

Export Citation Format

Share Document