4 research outputs found
Análisis comparativo del uso de las tecnologías de la información y comunicación (TIC), en la gestión empresarial de los hoteles ubicados en la ciudad de Estelí, Nicaragua entre los años 2008 y 2016
Get PDFLa presente investigación está dirigida al análisis de las Tecnologías de Información y Comunicación (TIC) en la gestión hotelera de los hoteles de la ciudad de Estelí, utilizando como referente un estudio realizado en 2008 y comparando resultados con el año 2016, es un estudio de tipo cuantitativo, se aplicaron 19 encuestas a gerentes, administradores de los hoteles y entrevistas para complementar los análisis estadísticos. Como resultado se encontró que hay cambios significativos en la implementación de nuevas tecnologías como: la incorporación de nuevos equipos tecnológicos (hardware), e incremento de programas (software) específicos para hoteles. El 30% de los encuestados afirmó que la principal limitante es la falta de capacitación y el 28% indica que los altos costos para incorporar las TIC, encontrando diferencia en las dificultades entre los dos años. La hipótesis planteada se acepta en un 84% las TIC han provocado cambios en la gestión empresarial y el uso de tecnología está dirigido al marketing de los hoteles a través del internet. Se proponen seis líneas estratégicas para la mejora del uso de las TIC
Activation of 7‑Silanorbornadienes by N‑Heterocyclic Carbenes: A Selective Way to N‑Heterocyclic-Carbene-Stabilized Silylenes
No full textThe synthesis of
hydridosilylenes Ter(H)Si: <b>3a</b> (Ter:
2,6-bis(2,4,6-trimethylphenyl)phenyl) and Ter*(H)Si: <b>3b</b> (Ter*: 2,6-bis(2,4,6-tri<i>iso-</i>propylphenyl)phenyl)
stabilized by the N-heterocyclic carbene (NHC) ImMe<sub>4</sub> is
reported. The synthesis of stabilized hydridosilylenes <b>3</b> was accomplished by a previously unknown NHC-induced fragmentation
of silanorbornadiene derivatives. Structural studies of the stabilized
silylenes <b>3</b> and of its Fe(CO)<sub>4</sub> complex <b>12</b> accompanied by a theoretical analysis of their bonding
situation indicate that stabilized silylenes such as <b>3</b> can be regarded as neutral silyl anion equivalents. A computational
investigation of the reaction course indicate a virtual one-step reaction
between the NHC and the silanorbornadiene. A theoretical assessment
of the scope and limitations of this reaction suggests that it is
general and can be used also for the synthesis of other carbene analogues
such as germylenes and phosphinidenes
Activation of 7‑Silanorbornadienes by N‑Heterocyclic Carbenes: A Selective Way to N‑Heterocyclic-Carbene-Stabilized Silylenes
No full textThe synthesis of
hydridosilylenes Ter(H)Si: <b>3a</b> (Ter:
2,6-bis(2,4,6-trimethylphenyl)phenyl) and Ter*(H)Si: <b>3b</b> (Ter*: 2,6-bis(2,4,6-tri<i>iso-</i>propylphenyl)phenyl)
stabilized by the N-heterocyclic carbene (NHC) ImMe<sub>4</sub> is
reported. The synthesis of stabilized hydridosilylenes <b>3</b> was accomplished by a previously unknown NHC-induced fragmentation
of silanorbornadiene derivatives. Structural studies of the stabilized
silylenes <b>3</b> and of its Fe(CO)<sub>4</sub> complex <b>12</b> accompanied by a theoretical analysis of their bonding
situation indicate that stabilized silylenes such as <b>3</b> can be regarded as neutral silyl anion equivalents. A computational
investigation of the reaction course indicate a virtual one-step reaction
between the NHC and the silanorbornadiene. A theoretical assessment
of the scope and limitations of this reaction suggests that it is
general and can be used also for the synthesis of other carbene analogues
such as germylenes and phosphinidenes
Activation of 7‑Silanorbornadienes by N‑Heterocyclic Carbenes: A Selective Way to N‑Heterocyclic-Carbene-Stabilized Silylenes
No full textThe synthesis of
hydridosilylenes Ter(H)Si: <b>3a</b> (Ter:
2,6-bis(2,4,6-trimethylphenyl)phenyl) and Ter*(H)Si: <b>3b</b> (Ter*: 2,6-bis(2,4,6-tri<i>iso-</i>propylphenyl)phenyl)
stabilized by the N-heterocyclic carbene (NHC) ImMe<sub>4</sub> is
reported. The synthesis of stabilized hydridosilylenes <b>3</b> was accomplished by a previously unknown NHC-induced fragmentation
of silanorbornadiene derivatives. Structural studies of the stabilized
silylenes <b>3</b> and of its Fe(CO)<sub>4</sub> complex <b>12</b> accompanied by a theoretical analysis of their bonding
situation indicate that stabilized silylenes such as <b>3</b> can be regarded as neutral silyl anion equivalents. A computational
investigation of the reaction course indicate a virtual one-step reaction
between the NHC and the silanorbornadiene. A theoretical assessment
of the scope and limitations of this reaction suggests that it is
general and can be used also for the synthesis of other carbene analogues
such as germylenes and phosphinidenes
