Search results for "TJ"
showing 10 items of 841 documents
Ambidextrous Leadership, Social Entrepreneurial Orientation, and Operational Performance
2019
In the knowledge era, new forms of organizing and managing firms emerge to adapt to new situations. One such new form of organizational management is ambidextrous leadership. Ambidextrous leadership combines opening leader behaviors, such as promoting creativity, and closing leader behaviors, such as accomplishing objectives and adhering to norms. Thus, the aim is to demonstrate that a social orientation is not at odds with measures of operational performance other than profitability. The purpose of this study is to examine how ambidextrous leadership is linked to social entrepreneurial orientation and how this in turn affects operational performance. This is done through a rigorous review …
When is Green Really Green? A Latvian Case Study on Updating of Food Supply Green Public Procurement
2020
Abstract Green public procurement (GPP) is an important tool and is used to reduce adverse environmental impacts caused by food production. To have a more detailed look at the application of GPP in Latvia, the authors screened 97 public tenders for supply of food products, documenting the choice of the green criteria. Only 15 % of the screened tender documents corresponded to the national GPP requirements. Only 4 % of the tender documents gave higher priority exclusively for organic products compared to products within national quality schemes or integrated pest management agriculture. The authors compared these findings with the opinions of environmental experts, GPP guidelines by the Euro…
Economic and Financial Comparison between Organic and Conventional Farming in Sicilian Lemon Orchards
2015
Sicily has a long tradition in citrus fruit cultivations that with vineyard and olive tree represent the main Mediterranean tree crops. In this paper we have evaluated the economic and financial sustainability of lemon production, both in organic farming and in conventional farming
Practice-based learning and innovation in nursing homes
2020
Purpose This paper aims to investigate the conditions under which learning and innovation occur within nursing homes by focusing on how the dynamics of the distribution and transformation of ideas and knowledge may be viewed as a prerequisite for innovation in both formal, planned learning situations and informal, everyday practices. Design/methodology/approach Data was produced via fieldwork, which included participant observations, conversations and research interviews with staff and managers at a Norwegian nursing home. The paper is inspired by situated learning theories and communities of practice, as the social context emerges as the site where learning and innovation are cultivated. …
A Systematic Review of Air Quality Sensors, Guidelines, and Measurement Studies for Indoor Air Quality Management
2020
The existence of indoor air pollutants—such as ozone, carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen dioxide, particulate matter, and total volatile organic compounds—is evidently a critical issue for human health. Over the past decade, various international agencies have continually refined and updated the quantitative air quality guidelines and standards in order to meet the requirements for indoor air quality management. This paper first provides a systematic review of the existing air quality guidelines and standards implemented by different agencies, which include the Ambient Air Quality Standards (NAAQS); the World Health Organization (WHO); the Occupational Safety and Heal…
Cieto poliuretānu putu iegūšana kriogēnai siltumizolācijai no ilgtspējīgiem polioliem
2020
Darbā tika pētīta atjaunojamo resursu piemērotība poliuretānu materiālu sintēzē, daļēji aizstājot no naftas pārstrādes produktiem iegūtos poliolus ar polioliem, kas iegūti no tallu eļļas un pārstrādāta polietilēntereftalāta (PET). Polikondensācijas reakcijā starp izocianātiem un polioliem tika iegūti cieto poliuretānu putu materiāli, kuriem tālāk tika noteiktas fizikāli-mehāniskās īpašības, piemēram, šķietamais blīvums, siltumvadītspēja, slēgto poru saturs materiālā, adhēzija pret alumīnija virsmu un stiprība spiedē gan istabas temperatūrā, gan šķidrajā slāpeklī. Iegūtie rezultāti tika salīdzināti ar cieto poliuretānu putu paraugiem, kuri tika sintezēti no komerciāli pieejamajiem polioliem,…
Pacilās vai vagās stādīto priedes (Pinus sylvestris) un egles (Picea abies) stādu agrīnā attīstība āreņos un citi meža atjaunošanas sekmīgumu ietekmē…
2017
Augsnes sagatavošana ir plaši izmantota prakse parastās egles (Picea abies) un parastās priedes (Pinus sylvestris) audžu atjaunošanā. Visplašāk izmantotās augsnes sagatavošanas metodes ir vagu un pacilu izveide, šīs metodes uzlabo stādu augšanu un palielina izdzīvojušo stādu skaitu salīdzinājumā ar neapstrādātu augsni. Neskatoties uz šo augsnes sagatavošanas veidu plašo pielietojumu mežu atjaunošanā Latvijā, līdz šim nebija veikti pētījumi, kas salīdzinātu vagu un pacilu sekmību āreņu tipa mežos. Pētījums tika veikts 2016. gadā, periodā no jūlija beigām līdz augusta beigām. Apsekotās audzes bija atjaunotas pirms viena līdz trīs gadiem. Mērķis bija noskaidrot, kurš no apstrādes veidiem snieg…
Responsive and Minimalist App Based on Explainable AI to Assess Palliative Care Needs during Bedside Consultations on Older Patients
2021
[EN] Palliative care is an alternative to standard care for gravely ill patients that has demonstrated many clinical benefits in cost-effective interventions. It is expected to grow in demand soon, so it is necessary to detect those patients who may benefit from these programs using a personalised objective criterion at the correct time. Our goal was to develop a responsive and minimalist web application embedding a 1-year mortality explainable predictive model to assess palliative care at bedside consultation. A 1-year mortality predictive model has been trained. We ranked the input variables and evaluated models with an increasing number of variables. We selected the model with the seven …
Upper Pleistocene biostratigraphy and traces of glaciotectonics at the Satiki site, western Latvia
2007
Structural, lithological, palynological and plant macroremain investigations of test-boring cores and gravel pit walls at the Satiki site suggest that gyttja and sandy gyttja units of basin sediments were deposited during the Felicianova (Eemian) Interglacial. A pollen diagram reflects the characteristic forest succession of the Eemian Interglacial: Betula, Pinus, Ulmus, Corylus, Quercus, Fraxinus, Tilia, Carpinus, Picea and Pinus. Forests of broadleaved trees and thermophilous plants dominated in the surroundings of the lake during the interglacial climatic optimum. The basin sediments contain a large number of warmth-demanding water plants such as Salvinia natans and Trapa sp. Paleobotani…
Effects of a Travel Behaviour Change Program on Sustainable Travel
2018
The main objective of the present study is to analyse the effect of a Travel Behaviour Change Program (TBCP) based on health improvement actions, in relation to a potential for an increase in walking and cycling, with reference to particular groups of people defined according to sociodemographics. A TBCP consisting of three persuasion actions based on health improvements was planned and executed in Valencia (Spain). A two-wave panel survey was used to study the effects of taking part in the TBCP. The panel survey collected data related to activity-travel scheduling process before and after the execution of the TBCP. To study the influence of participating in the TBCP, respondents were separ…