Copper-catalyzed dehydrogenative borylation of terminal alkynes with pinacolborane.

LCuOTf complexes [L = cyclic (alkyl)(amino)carbenes (CAACs) or N-heterocyclic carbenes (NHCs)] selectively promote the dehydrogenative borylation of C(sp)-H bonds at room temperature. It is shown that σ,π-bis(copper) acetylide and copper hydride complexes are the key catalytic species

ADAPTING THROUGH ORGANIZATIONAL CHANGE IN CAPITAL PROJECTS ORGANIZATIONS

Organizational change can be defined as an alteration of a core aspect of an organization’s operation, structure, or culture. Previous research on organizational change mainly has focused on different types of technical changes, such as alternative project delivery methods and strategies to adopt the design-build approach successfully. Also, previous studies have focused on the project level changes instead of organizational level responses. Here I show using a proposed change model and performing thematic, and analysis, that there exist common responses, and challenges across different types of capital projects organizations studied. The results show that responses to change will differ as a function of the type of change, and the organization’s capabilities and resources. Furthermore, when performing organizational changes, the impact on “people” within the organization should be closely studied and monitored, while taking into account other challenges that might impact the organization. For drivers of change, the main themes were related to Market shift. Clients/owners’ needs, and Sustainability. On the other hand, the organizational responses’ main themes were related to Restructuring, Communication, Partnerships, Training, Recruitment, Internal capabilities, organizational design, and supportive leadership. While for challenges, the main themes were mainly related to Resistance to change, the nature of the industry, and retaining the workforce. One of the major challenges faced during the research was motivating the organizations to participate. Various organizations showed interest and then decided not to join, while others that participated had to review their responses multiple times, and were concerned about revealing their “Trade secrets”. Future work should build on this effort and consider the responses and analyze them as a function of types of change, Moreover, future research should consider asking the interviewees to “weight” the responses to avoid wrong conclusions due to the low number of in-text mentions. This research will help capital project organizations to be aware of the main areas of concern during the journey of change and help them to learn from previous experiences from other organizations

Design and Development of the Architecture and Framework of a Knowledge-Based Expert System for Environmental Impact Assessment

The development of the architecture and framework of a knowledge-based expert system (ES) named "JESEIA" for environmental impact assessment (EIA) was developed using the C Language Integrated Production System (CLIPS) that incorporates relevant expert knowledge on EIA and integrates a computational tool to support the preparation of an EIA study. The research was based on the conceptualization and development of the architecture and framework of a knowledge-based expert system that demonstrates the feasibility of integrating the following aspects: Expert knowledge-based system approach, Object-oriented techniques and rules structuring as knowledge modeling paradigm, database management system as a repository connection between domain knowledge sources and the expert system kernel, and finally EIA as a significant knowledge domain and incremental approach as a development model. This work describes the functional framework of combining shared knowledge from various experts as knowledge sources through the implementation of a blackboard system approach that organizes the solution elements and determines which information has the highest certainty to contribute to the inference solution. The rules, in the rule base, were developed according to the environmental component classification characteristics with attributes in an object-oriented technique. The developed system considers the robustness, expandability and modularity throughout its development process. The raw knowledge and database were kept in a supportive data base developed in the system for further reference or updating through the developed expert system as a built-in functionality as well as through a connection to an external data base environment through an open database connectivity mechanism

(Phosphanyl)phosphaketenes as building blocks for novel phosphorus heterocycles.

Although BH3 simply coordinates the endocyclic P of (phospholidino)phosphaketene 1Dipp , the bulkier B(C6F5)3 gives rise to a zwitterionic diphosphirenium, which is a novel type of 2π-electron aromatic system as shown by the calculated NICS values. While the reaction of 1Dipp with Na[PCO(dioxane) x ] is unselective, the same reaction with the sterically bulky (phospholidino)phosphaketene 1Ar** [Ar** = 2,6-bis[di(4-tert-butylphenyl)methyl]-4-methylphenyl selectively affords a sodium bridged dimer containing a hitherto unknown λ3,λ5,λ3-triphosphete core. The latter formally results from "P-" addition to a 1,3-P/C-dipole. Similarly, adamantyl isonitrile adds to 1Dipp giving a 4-membered phosphacycle. In contrast to 1, the phosphaketene derived from the electrophilic diazaphospholidine-4,5-dione is unstable and reacts with a second molecule of Na[PCO(dioxane) x ] to afford a 1,3,4-oxadiphospholonide derivative

Using Fuzzy Cognitive Maps to Reduce False Alerts in SOM based Intrusion Detection Sensors

Most of the intrusion detection sensors suffer from the high rate offake alerts that the sensor produce

2-D angle of arrival estimation using a one-dimensional antenna array

In this paper, a two-dimensional (2-D) angle of arrival (AOA) estimator is presented for vertically polarised waves in which a one-dimensional (1-D) antenna array is used. Many 2-D AOA estimators were previously developed to estimate elevation and azimuth angles. These estimators require a 2-D antenna array setup such as the L-shaped or parallel antenna 1-D arrays. In this paper a 2-D AOA estimator is presented which requires only a 1-D antenna array. This presented method is named Estimation of 2-D Angle of arrival using Reduced antenna array dimension (EAR). The EAR estimator utilises the antenna radiation pattern factor to reduce the required antenna array dimensionality. Thus, 2-D AOA estimation is possible using antenna arrays of reduced size and with a minimum of two elements only, which is very beneficial in applications with size and space limitations. Simulation results are presented to show the performance of the presented method

Assessing Mothers’ Perception of Maternal Health Services in Rural Areas of Yatta, Hebron: A Pilot Study from Palestine

Access to high-quality care during pregnancy and childbirth is a challenge for women living in Al-Masafer of Yatta and Bedouin areas, considered C areas under Israeli administrative & security supremacy. Realizing clients\u27 perception and satisfaction with the quality of maternal healthcare services will enable maternal health decision-makers & providers to assess the impact of their services on the clients\u27 demands and perceptions. This study aims to measure women\u27s perception of maternal health services provided in Al- Masafer of Yatta and Bedouin areas. A cross-sectional descriptive quantitative study of 59 women, selected purposefully from Al-Masafer of Yatta and the Bedouin areas, was conducted in September 2021. The mean age of the respondents was 28 years, with a range of 23- 34 years old. After investigating their Perception of Maternal Health Services in Al-Masafer of Yatta, the mean of their answers was as the following: provided services: 2.87 was moderate, the professional treatment: 2.80 was moderate, degree of obstacles facing women in access to reproductive health services: 3.50 was moderate, and health promotion provided to women: 1.92 was low, while the total overall mean 3.01 was moderate. Despite the obstacles faced by women to reach maternal health centers, the overall level of health care provided at maternal health centers was modest in both Al-Masafer of Yatta and the Bedouin areas

Parasitoid learning and intraguild predation and their effects on the biological control of aphids

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